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Healthcare Services2022-12-310001513363Non-control/Non-affiliate Investments Westerns Smokehouse, LLC First Lien Debt Consumer Products Variable Index Spread/ Floor(S + 6.50%) /(1.50%) Rate Cash/PIK 11.21%/ 0.00% Investment date 2/28/2020 Maturity 12/23/20242022-01-012022-12-310001513363Affiliate Investments Spectra A&D Acquisition Inc (fka FDS Avionics Corp) Aerospace & Defense Manufacturing First Lien Debt Variable Index Spread (L +5.50%) Variable Index Floor (1.00%) Rate Cash 10.23% Rate PIK 0.00% Investment date 2/12/2021 Maturity 2/11/20262022-01-012022-12-310001513363fdus:RisksRelatingToOurBusinessAndStructureMember2023-01-012023-12-3100015133632023-03-310001513363Affiliate Investments Pfanstiehl Inc Health Products Subordinated Debt Rate Cash 10.00% Rate PIK 0.00% Investment date 8/2/2022 Maturity 8/2/20272022-12-310001513363us-gaap:AccumulatedDistributionsInExcessOfNetIncomeMember2021-01-012021-12-310001513363us-gaap:CommonStockMember2021-12-310001513363Non-control/Non-affiliate Investments Micronics Filtration Holdings, Inc. (dba Micronics Engineered Filtration Group, Inc.) Component Manufacturing First Lien Debt Variable Index Spread (S +5.50%) Variable Index Floor (0.50%) Rate Cash 9.32% Rate PIK 0.00% Investment date 2/17/2022 Maturity 2/17/20272022-12-310001513363Non-control/Non-affiliate Investments Virginia Tile Company, LLC Industry Specialty Distribution Common Equity (17 units) Investment date 12/19/20142022-01-012022-12-310001513363Non-control/Non-affiliate Investments Auto CRM LLC (dba Dealer Holdings) Information Technology Services First Lien Debt Variable Index Spread (P +5.50%) Variable Index Floor (3.25%) Rate Cash 13.00% Rate PIK 0.85% Investment date 10/1/2021 Maturity 10/1/20262022-01-012022-12-310001513363fdus:SupplementalDividendMember2023-10-300001513363us-gaap:LineOfCreditMember2019-01-012019-12-310001513363fdus:InvestmentAdvisoryAgreementMember2022-12-310001513363Non-control/Non-affiliate Investments AOM Intermediate Holdco, LLC (dbaAllOver Media) Information Technology Services First Lien Debt Variable Index Spread (S +6.50%) Variable Index Floor (0.75%) Rate Cash 10.31% Rate PIK 0.00% Investment date 2/1/2022 Maturity 2/1/20272022-01-012022-12-310001513363us-gaap:WarrantMemberus-gaap:FairValueInputsLevel3Member2023-12-310001513363Non-control/Non-affiliate Investments Combined Systems, Inc. Aerospace & Defense Manufacturing First Lien Debt Variable Index Spread Rate Variable Index Spread Variable Index Spread (L +11.00%) Variable Index Floor (2.00%) Cash 18.75% Rate PIK 0.00% Investment date 12/22/2022 Maturity 2/15/20232022-12-310001513363Non-control/Non-affiliate Investments Rhino Assembly Company, LLC Specialty Distribution Second Lien Debt Rate Cash/PIK 11.50%/0.00% Investment date 8/11/2017 Maturity 2/11/20262022-01-012022-12-310001513363Non-control/Non-affiliate Investments Palmetto Moon, LLC Retail Common Equity (499 units) Investment date 11/3/20162023-01-012023-12-3100015133632022-12-310001513363fdus:DividendReinvestmentPlanMember2022-10-012022-12-310001513363Affiliate Investments Spectra A&D Acquisition, Inc. (fka FDS Avionics Corp.) Aerospace & Defense Manufacturing First Lien Debt Variable Index Spread (S + 5.75%) Variable Index Floor(1.00%) Rate Cash 11.36% Rate PIK 0.00% Investment date 2/12/2021 Maturity 2/11/20262023-12-310001513363fdus:DependenceOnInvestmentAdvisorsMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments MBS Opco, LLC (dba Marketron) Information Technology Services First Lien Debt Variable Index Spread (S +8.50%) Variable Index Floor (1.50%) Rate Cash 13.34% Rate PIK 0.00% Investment date 9/29/2022 Maturity 9/28/20262022-12-310001513363srt:MaximumMemberfdus:ValuationTechniqueEnterpriseValueMemberus-gaap:FairValueInputsLevel3Memberus-gaap:MeasurementInputRevenueMultipleMember2023-12-310001513363Non-control/Non-affiliate Investments OnePath Systems, LLC Information Technology Services First Lien Debt Variable Index Spread (S +7.50%) Variable Index Floor (1.00%) Rate Cash 12.08% Rate PIK 0.00% Investment date 9/30/2022 Maturity 9/30/20272022-01-012022-12-310001513363fdus:ValuationTechniqueEnterpriseValueMemberus-gaap:FairValueInputsLevel3Memberus-gaap:MeasurementInputRevenueMultipleMember2022-12-310001513363Non-control/Non-affiliate Investments PowerGrid Services Acquisition, LLC Utilities: Services Common Equity (5,341 units) Investment date 9/21/20212023-01-012023-12-310001513363fdus:UncertaintySurroundingPotentialLegalRegulatoryAndPolicyChangesByCurrentPresidentialAdministrationsAndCongressMember2023-01-012023-12-310001513363fdus:EquityInvestmentMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2022-12-310001513363Affiliate Investments Spectra A&D Acquisition, Inc. (fka FDS Avionics Corp.) Aerospace & Defense Manufacturing Common Equity (4,663 units) Investment date 9/16/20222023-01-012023-12-310001513363Non-control/Non-affiliate Investments Hallmark Health Care Solutions, Inc. Healthcare Services First Lien Debt Variable Index Spread (L +7.25%) Variable Index Floor (1.50%) Rate Cash 10.99% Rate PIK 0.00% Investment date 12/4/2020 Maturity 12/4/20252022-12-310001513363Non-control/Non-affiliate Investments Micronics Filtration Holdings, Inc. (dba Micronics Engineered Filtration Group, Inc.) Component Manufacturing First Lien Debt Variable Index Spread (S+5.50%) Variable Index Floor (0.50%) Rate Cash 10.84% Rate PIK 0.00% Investment date 2/17/2022 Maturity 2/17/2027 Principal Amount 9,3642023-01-012023-12-310001513363Non-control/Non-affiliate Investments Tedia Company, LLC Healthcare Products Revolving Loan ($2,400 unfunded commitment) Variable Index Spread (S +7.75%) Variable Index Floor (1.00%) Rate Cash 11.57% Rate PIK 0.00% Investment date 03/04/2022 Maturity 03/04/20272022-12-3100015133632023-04-012023-06-300001513363fdus:AffiliateInvestmentsMemberfdus:PfanstiehlIncMember2022-12-310001513363Non-control/Non-affiliate Investments Ameriwater LLC Component Manufacturing Subordinated Debt Rate Cash 7.00% Rate PIK 7.00% Investment date 7/8/2022 Maturity 1/8/20282022-01-012022-12-310001513363Non-control/Non-affiliate Investments Global Plasma Solutions, Inc. Component Manufacturing Subordinated Debt Rate Cash 0.00% Rate PIK 18.80% Investment date 3/31/2023 Maturity 3/18/20242023-12-310001513363fdus:UnitedStatesSoutheastMember2023-01-012023-12-310001513363fdus:UnitedStatesWestMember2023-12-310001513363Non-control/Non-affiliate Investments Ipro Tech, LLC Information Technology Services Preferred Equity (682,075 units) Investment date 7/28/20212022-12-310001513363Non-control/Non-affiliate Investments CIH Intermediate, LLC Business Services First Lien Debt Variable Index Spread Rate Cash 10.00% Rate PIK 1.00% Investment date 3/3/2022 Maturity 3/3/20282023-12-310001513363Non-control/Non-affiliate Investments Diversified Search LLC Business Services2022-12-310001513363Affiliate Investments Applegate Greenfiber Intermediate Inc ( fka US GreenFiber LLC) Building Products Manufacturing Common Equity (5,690 units) Investment date 12/31/20212023-12-310001513363Non-control/Non-affiliate Investments UBEO, LLC. Industry Business Services Common Equity (705,000 units) Investment date 4/3/20182022-12-310001513363Non-control/Non-affiliate Investments BurgerFi International, LLC (dba BurgerFi) Restaurants Preferred Equity (9,787 units) Investment date 11/3/20222023-12-310001513363Non-control/Non-affiliate Investments Allredi LLC (fka Macro Group International OpCo. LLC) Industrial Cleaning & Coatings Common Equity (570,636 units) Investment date 7/21/20172023-12-310001513363Non-control/Non-affiliate Investments Dataguise, Inc. Information Technology Services Common Equity (909 shares) Investment date 12/31/20202023-01-012023-12-310001513363us-gaap:ValuationTechniqueDiscountedCashFlowMemberus-gaap:FairValueInputsLevel3Membersrt:MinimumMemberus-gaap:SubordinatedDebtMemberfdus:MeasurementInputWeightedAverageCostOfCapitalMember2023-12-310001513363fdus:BoardOfDirectorsChangeInvestmentObjectiveOperatingPoliciesAndStrategiesWithoutPriorNoticeOrStockholderApprovalMember2023-01-012023-12-310001513363fdus:ValuationTechniqueEnterpriseValueMemberus-gaap:FairValueInputsLevel3Memberus-gaap:MeasurementInputRevenueMultipleMembersrt:WeightedAverageMember2022-12-310001513363fdus:TwoPointSevenNineThreePercentInterestRateMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments Road Safety Services, Inc. Second Lien Debt Industry Business Services Rate Cash/PIK 11.25%/2.00% Investment date 09/18/2018 Maturity 09/18/20252022-12-310001513363Non-control/Non-affiliate Investments PowerGrid Services Acquisition, LLC Utilities: Services2023-12-310001513363Non-control/Non-affiliate Investments American AllWaste LLC (dba WasteWater Transport Services) Environmental Industries Preferred Equity (74 units) Investment Date 12/29/20212022-12-310001513363fdus:FivePointSevenThreeFivePercentInterestRateMember2023-12-310001513363fdus:SmallBusinessAdministrationDebenturesMember2022-12-310001513363Non-control/Non-affiliate Investments Applied Data Corporation Information Technology Services Common Equity Investment date 10/1/20212022-01-012022-12-310001513363us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:SubordinatedDebtMember2023-12-310001513363fdus:FirstLienDebtMemberfdus:NonControlOrNonAffiliateInvestmentsMemberfdus:HealthcareServicesMemberfdus:HaematologicTechnologiesIncMember2023-12-310001513363fdus:ThreePointOneNineZeroPercentInterestRateMember2023-12-310001513363Non-control/Non-affiliate Investments BurgerFi International, LLC (dba BurgerFi) Restaurants Common Equity (14,201 units) Investment date 11/3/20222023-12-310001513363Non-control/Non-affiliate Investments CIH Intermediate, LLC Business Services Subordinated Debt Variable Index Spread Rate Cash 10.00% Rate PIK 1.00% Investment date 3/3/2022 Maturity 3/3/20282022-12-310001513363us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2021-12-310001513363fdus:R1HoldingsLlcDbaRoadoneIntermodalogisticsSeniorSubordinatedDebtMember2022-12-310001513363Non-control/Non-affiliate Investments 2KDirect Inc (dba iPromote) Information Technology Services First Lien Debt Variable Index Spread (L +6.75%) Variable Index Floor (0.50%) Rate Cash 11.48% Rate PIK 0.00% Investment date 6/25/2021 Maturity 6/25/20262022-12-310001513363Non-control/Non-affiliate Investments White Label Communication, LLC Industry Information Technology Services Common Equity (536 units) Investment date 10/11/20232023-12-310001513363fdus:ChangeInInterestRateAffectCostOfCapitalAndNetInvestmentIncomeMember2023-01-012023-12-310001513363us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:SubordinatedDebtMember2022-12-310001513363Non-control/Non-affiliate Investments ISI PSG Holdings, LLC (dba Incentive Solutions, Inc.) Business Services2022-12-310001513363Non-control/Non-affiliate Investments Auto CRM LLC (dba Dealer Holdings) Information Technology Services Common Equity2022-12-310001513363Non-control/Non-affiliate Investments Acendre Midco Inc Information Technology Services Common Equity (500,000 shares) Investment date 10/6/20212023-12-310001513363Non-control/Non-affiliate Investments Dealerbuilt Acquisition, LLC Information Technology Services First Lien Debt Variable Index Spread (S +5.75%) Variable Index Floor (4.00%) Rate Cash 11.15% Rate PIK 1.00% Investment date 7/21/2023 Maturity 7/21/20262023-01-012023-12-310001513363Affiliate Investments Pfanstiehl Inc Health Products Common Equity (2,550 units) Investment date 3/29/20132023-01-012023-12-310001513363us-gaap:FairValueInputsLevel2Member2023-12-310001513363Non-control/Non-affiliate Investments BurgerFi International, LLC (dba BurgerFi) Restaurants2023-12-310001513363Non-control/Non-affiliate Investments Gurobi Optimization, LLC Information Technology Services Common Equity (3 shares) Investment date 12/19/20172022-01-012022-12-310001513363fdus:UnitedStatesSoutheastMember2022-01-012022-12-310001513363Non-control/Non-affiliate Investments Road Safety Services, Inc. Common Equity (779 units) Industry Business Services Investment date 9/18/20182022-01-012022-12-310001513363fdus:FirstLienDebtMemberus-gaap:SubsequentEventMemberfdus:JanusHealthTechnologiesIncMember2024-01-030001513363us-gaap:LineOfCreditMember2018-12-310001513363Total Control Investments2022-12-310001513363fdus:FailureOfCybersecurityProtectionSystemsAndOccurrenceOfEventsMember2023-01-012023-12-310001513363fdus:ThreePointTwoZeroNinePercentInterestRateMember2022-12-310001513363us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2023-12-310001513363fdus:SecuredBorrowingsMember2021-01-012021-12-310001513363Non-control/Non-affiliate Investments Haematologic Technologies, Inc. Healthcare Services Common Equity (630 units) Investment date 10/11/20192023-12-310001513363us-gaap:LineOfCreditMember2022-01-012022-12-3100015133632023-10-012023-12-310001513363Non-control/Non-affiliate Investments Cardback Intermediate, LLC (dba Chargeback Gurus) Information Technology Services First Lien Debt Variable Index Spread Variable Index Spread (L +6.50%) Variable Index Floor (0.75%) Rate Cash 10.24% Rate PIK 0.00% Investment date 0810/2021 Maturity 8/10/20262022-01-012022-12-310001513363fdus:DebtInvestmentsSubordinatedToClaimsOfOtherCreditorsOrSubjectToLenderLiabilityClaimsMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments Ameriwater LLC Component Manufacturing First Lien Debt Variable Index Spread (S +6.25%) Variable Index Floor (1.00%) Rate Cash 9.81% Rate PIK 0.00% Investment date 7/8/2022 Maturity 7/8/20272022-12-310001513363fdus:ResignationOfInvestmentAdvisorFromAdministratorRoleUnderAdministrationAgreementMember2023-01-012023-12-3100015133632018-12-310001513363fdus:FivePointThreeFourOnePercentInterestRateOneMember2023-12-310001513363Non-control/Non-affiliate Investments K2 Merger Agreement Agent, LLC (fka K2 Industrial Services, Inc.) (n) Industrial Cleaning & Coatings Second Lien Debt Cash 0.00% Rate PIK 10.00% Investment date 1/28/2019 Maturity 1/28/20252022-12-310001513363Non-control/Non-affiliate Investments 301 Edison Holdings Inc. (dba LGG Industrial) Specialty Distribution First Lien Debt Rate Cash 11.75% Rate PIK 1.50% Investment date 11/14/2023 Maturity 11/13/20282023-12-310001513363Non-control/Non-affiliate Investments American AllWaste LLC (dba WasteWater Transport Services) Environmental Industries Preferred Equity (141 units) Investment Date 11/2/20202022-01-012022-12-310001513363Non-control/Non-affiliate Investments Barefoot Mosquito and Pest Control, LLC Consumer Services Revolving Loan ($1,500 unfunded commitment) Variable Index Spread (S + 7.00%) Variable Index Floor (2.00%) Rate Cash 12.37% Rate PIK 0.00% Investment date 12/22/2023 Maturity 12/22/20292023-12-310001513363Non-control/Non-affiliate Investments Haematologic Technologies, Inc. Healthcare Services Common Equity (630 units) Investment date 10/11/20192022-12-310001513363Non-control/Non-affiliate Investments Ipro Tech, LLC Information Technology Services First Lien Debt Variable Index Spread (S +7.00%) Variable Index Floor (1.00%) Rate Cash 11.69% Rate PIK 1.00% Investment date 6/30/2020 Maturity 7/28/20252022-01-012022-12-3100015133632023-08-012023-08-010001513363Non-control/Non-affiliate Investments Haematologic Technologies, Inc. Healthcare Services First Lien Debt Variable Index Spread (L +8.25%) Variable Index Floor (2.00%) Rate Cash 12.98% Rate PIK 0.00% Investment date 10/11/2019 Maturity 10/11/20242022-01-012022-12-310001513363Non-control/Non-affiliate Investments Suited Connector LLC Second Lien Debt Industry Information Technology Services Rate Cash/PIK 12.00%/0.00% Investment date 10/29/2021 Maturity 6/1/20282022-01-012022-12-310001513363fdus:InformationTechnologyServicesMemberfdus:FirstLienDebtMemberfdus:AppliedDataCorporationMemberfdus:NonControlOrNonAffiliateInvestmentsMember2023-12-310001513363Non-control/Non-affiliate Investments NGT Acquisition Holdings, LLC (dba Techniks Industries) Component Manufacturing Common Equity (378 units) Investment date 5/24/20172022-12-310001513363Non-control/Non-affiliate Investments Sonicwall US Holdings, Inc. Second Lien Debt Industry Information Technology Services Variable Index Spread / Floor (L + 7.50%) / (0.00%) Rate Cash/PIK 12.20%/0.00% Investment date 9/6/2022 Maturity 5/18/20262022-01-012022-12-3100015133632017-12-310001513363Non-control/Non-affiliate Investments Micronics Filtration Holdings, Inc. (dba Micronics Engineered Filtration Group, Inc.) Component Manufacturing First Lien Debt Variable Index Spread (S+5.50%) Variable Index Floor (0.50%) Rate Cash 10.84% Rate PIK 0.00% Investment date 2/17/2022 Maturity 2/17/2027 Principal Amount 9,3642023-12-310001513363Non-control/Non-affiliate Investments Applied Data Corporation Information Technology Services Common Equity Investment date 11/6/20202022-01-012022-12-310001513363Non-control/Non-affiliate Investments American AllWaste LLC (dba WasteWater Transport Services) Environmental Industries First Lien Debt Variable Index Spread (L +6.15%) Variable Index Floor (1.00%) Rate Cash 9.82% Rate PIK 0.00% Investment date 6/28/2021 Maturity 6/28/20262022-12-310001513363Non-control/Non-affiliate Investments Hub Acquisition Sub, LLC (dba Hub Pen) Promotional products Common Equity (637 units) Investment date 8/7/20232023-01-012023-12-310001513363fdus:NwsTechnologiesLlcMemberfdus:FirstLienDebtMemberfdus:UtilitiesServicesMemberfdus:NonControlOrNonAffiliateInvestmentsMember2023-12-310001513363Non-control/Non-affiliate Investments OnePath Systems, LLC Information Technology Services Common Equity (732,542 shares) Investment date 9/30/20222022-01-012022-12-310001513363us-gaap:InvestmentAffiliatedIssuerMember2023-12-310001513363Non-control/Non-affiliate Investments Ad Info Parent, Inc. (dba MediaRadar) Information Technology Services Revolving Loan ($1,442 unfunded commitment) Variable Index Spread (S+6.25%) Variable Index Floor (1.00%) Rate Cash 11.75% Rate PIK 0.00% Investment date 11/1/2023 Maturity 9/16/20292023-01-012023-12-310001513363us-gaap:MeasurementInputEbitdaMultipleMembersrt:MaximumMemberfdus:ValuationTechniqueEnterpriseValueMemberus-gaap:FairValueInputsLevel3Memberus-gaap:SubordinatedDebtMember2022-12-310001513363fdus:InvestmentsInCertainIndustrySectorsEnergySectorMayBeSubjectToSignificantPoliticalEconomicAndCapacityRisksMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments Diversified Search LLC Business Services First Lien Debt Variable Index Spread Variable Index Spread (S +6.50%) Variable Index Floor (1.00%) Cash 10.32% Rate PIK 0.00% Investment date 2/7/2019 Maturity 2/7/20252023-01-012023-12-3100015133632021-11-012021-11-010001513363Non-control/Non-affiliate Investments Hallmark Health Care Solutions, Inc. Healthcare Services2022-12-310001513363Non-control/Non-affiliate Investments Cardback Intermediate, LLC (dba Chargeback Gurus) Information Technology Services Common Equity (495 shares) Investment date 8/10/20212023-12-310001513363us-gaap:SubordinatedDebtMember2023-12-310001513363srt:MaximumMemberfdus:FirstLienDebtMemberus-gaap:SubsequentEventMemberfdus:ProfessionalFoodServiceSalesAndMarketingServiceMember2024-02-2300015133632021-08-022021-08-020001513363Non-control/Non-affiliate Investments Dealerbuilt Acquisition, LLC Information Technology Services Subordinated Debt Rate Cash 7.50% Rate PIK 7.50% Investment date 7/21/2023 Maturity 1/21/20272023-01-012023-12-310001513363us-gaap:MeasurementInputEbitdaMultipleMemberfdus:ValuationTechniqueEnterpriseValueMemberus-gaap:FairValueInputsLevel3Membersrt:MinimumMember2022-12-310001513363fdus:EquityInvestmentMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2022-01-012022-12-310001513363Non-control/Non-affiliate Investments Applied Data Corporation Information Technology Services Preferred Equity (1,184,711 units) Investment date 11/6/20202023-12-310001513363fdus:UnitedStatesNortheastMember2023-01-012023-12-310001513363fdus:DividendOneMember2022-08-012022-08-010001513363Non-control/Non-affiliate Investments AOM Intermediate Holdco, LLC (dbaAllOver Media) Information Technology Services Common Equity Investment date 2/1/20222022-12-310001513363country:CA2023-01-012023-12-310001513363Non-control/Non-affiliate Investments Cardboard Box LLC (dba Anthonys Coal Fired Pizza) Restaurants Preferred Equity (9,787 units) Investment date 11/3/20222022-01-012022-12-310001513363Non-control/Non-affiliate Investments Winona Foods, Inc. Industry Specialty Distribution First Lien Debt Variable Index Spread (L + 12.00%) Variable Index Floor (1.00%) Rate Cash 16.75% Rate PIK 0.00% Investment date 4/1/2021 Maturity 4/1/20262022-01-012022-12-310001513363fdus:DependenceOnInvestmentProfessionalsMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments PowerGrid Services Acquisition, LLC Utilities: Services Common Equity (5,341 units) Investment date 9/21/20212023-12-3100015133632021-03-310001513363us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2022-01-012022-12-3100015133632021-01-012021-12-310001513363fdus:SupplementalDividendMember2022-02-152022-02-150001513363fdus:FirstLienDebtMember2023-12-310001513363Non-control/Non-affiliate Investments LifeSpan Biosciences, Inc. Healthcare Products Common Equity (100 shares) Investment date 3/19/20212022-12-310001513363fdus:SupplementalDividendTwoMember2022-08-012022-08-010001513363fdus:AffiliateInvestmentsMemberfdus:SpectraAAndDAcquisitionIncMember2022-01-012022-12-310001513363Non-control/Non-affiliate Investments Road Safety Services, Inc. Second Lien Debt Industry Business Services Rate Cash/PIK 11.25%/2.00% Investment date 09/18/2018 Maturity 09/18/20252022-01-012022-12-310001513363Non-control/Non-affiliate Investments OnePath Systems, LLC Information Technology Services First Lien Debt Variable Index Spread (S +7.50%) Variable Index Floor (1.00%) Rate Cash 12.08% Rate PIK 0.00% Investment date 9/30/2022 Maturity 9/30/20272022-12-3100015133632021-12-310001513363Non-control/Non-affiliate Investments American AllWaste LLC (dba WasteWater Transport Services) Environmental Industries Preferred Equity (207 units) Investment Date 8/6/20192022-12-310001513363fdus:SupplementalDividendMember2022-05-022022-05-020001513363fdus:NotesMember2019-01-012019-12-310001513363Non-control/Non-affiliate Investments MDME Holding Corp. Healthcare Products First Lien Debt Variable Index Spread (S+6.25%) Variable Index Floor (1.00%) Rate Cash 11.75% Rate PIK 0.00% Investment date 8/31/2023 Maturity 8/3/20272023-01-012023-12-310001513363us-gaap:FairValueInputsLevel3Member2023-12-310001513363Non-control/Non-affiliate Investments AmeriWater LLC Component Manufacturing Subordinated Debt Cash 7.00% Rate PIK 7.00% Investment date 7/8/2022 Maturity 1/8/20282023-01-012023-12-310001513363fdus:SalesOfSubstantialAmountsOfCommonStockMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments Level Education Group, LLC (dba CE4Less) Business Services Common Equity (1,000,000 units) Investment date 4/1/20212022-12-3100015133632022-04-012022-06-300001513363Non-control/Non-affiliate Investments USG AS Holdings, LLC Industry Utilities: Services Common Equity (Units N/A) Investment date 2/21/2023 2023-01-012023-12-310001513363Non-control/Non-affiliate Investments The Kyjen Company, LLC (dba Outward Hound) Consumer Products Common Equity (855 shares) Investment date 12/8/20172023-01-012023-12-310001513363fdus:SecondLienDebtMember2023-01-012023-12-3100015133632023-01-012023-12-310001513363fdus:ThreePointTwoSixZeroPercentInterestRateMember2023-12-310001513363fdus:ConflictsWithInvestmentAdvisorRelatedToOtherArrangementsMember2023-01-012023-12-310001513363Money Market Funds Goldman Sachs Financial Square Treasury Obligation Institution2022-12-310001513363fdus:FivePointThreeSevenFivePercentNotesDueTwoThousandTwentyFourMember2019-10-232019-10-230001513363Non-control/Non-affiliate Investments Netbase Solutions, Inc. (dba Netbase Quid) Information Technology Services First Lien Debt ($3,300 unfunded commitment) Variable Index Spread (P +4.00%) Variable Index Floor (3.25%) Rate Cash 11.50% Rate PIK 0.00% Investment date 11/18/2021 Maturity 11/18/20252022-01-012022-12-310001513363Non-control/Non-affiliate Investments Diversified Search LLC Diversified Search LLC Common Equity (573 units) Investment date 2/7/20192022-12-310001513363fdus:FivePointThreeFourOnePercentInterestRateTwoMember2022-12-310001513363Non-control/Non-affiliate Investments Bad Boy Mowers JV Acquisition, LLC Consumer Products Preferred Equity (13,000 units) Investment date 11/9/20232023-12-310001513363fdus:IsiPsgHoldingsLlcMemberfdus:BusinessServicesMemberfdus:FirstLienDebtOneMemberfdus:NonControlOrNonAffiliateInvestmentsMember2022-12-310001513363fdus:SeniorSecuredRevolvingCreditFacilityMember2023-12-310001513363Non-control/Non-affiliate Investments PowerGrid Services Acquisition, LLC Utilities: Services Second Lien Debt Variable Index Spread (S+9.50%) Variable Index Floor (1.00%) Rate Cash 15.15% Rate PIK 0.00% Investment date 9/12/2021 Maturity 3/21/20292023-12-310001513363Control Investments EBL LLC (EbLens) Retail Common Equity (375 units) ($375 unfunded commitment) Investment Date 10/3/20222022-12-310001513363Non-control/Non-affiliate Investments Worldwide Express Operations, LLC Transportation services2022-12-310001513363Non-control/Non-affiliate Investments United Biologics, LLC. Industry Healthcare Services Preferred Equity (98,377 units) Investment date 4/1/20122023-12-310001513363Non-control/Non-affiliate Investments ECM Industries, LLC Component Manufacturing Common Equity Investment date 4/30/20202022-01-012022-12-310001513363fdus:ControlInvestmentsMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments APM Intermediate Holdings, LLC (dba Artistic Paver Manufacturing, Inc.) Building Products Manufacturing First Lien Debt Variable Index Spread (S +7.00%) Variable Index Floor (2.00%) Rate Cash 11.21% Rate PIK 0.00% Investment date 11/8/2022 Maturity 11/8/20272022-01-012022-12-310001513363Non-control/Non-affiliate Investments Barefoot Mosquito and Pest Control, LLC Consumer Services Preferred Equity (15,000 units) Investment date 12/22/20232023-12-310001513363Non-control/Non-affiliate Investments Applied Data Corporation Information Technology Services First Lien Debt Variable Index Spread (S + 6.25%) Variable Index Floor (1.50%) Rate Cash 11.84% Rate PIK 0.00% Investment date 11/6/2020 Maturity 11/6/20252023-12-310001513363fdus:FourPointFiveThreeThreePercentInterestRateMember2022-12-310001513363Non-control/Non-affiliate Investments Dealerbuilt Acquisition, LLC Information Technology Services Subordinated Debt Rate Cash 7.50% Rate PIK 7.50% Investment date 7/21/2023 Maturity 1/21/20272023-12-3100015133632016-12-310001513363Non-control/Non-affiliate Investments Haematologic Technologies, Inc. Healthcare Services Common Equity 89 units) Investment date 6/26/20232023-12-310001513363Control Investments US GreenFiber LLC Building Products Manufacturing Common Equity (425,508 units) Investment Date 8/30/20192022-01-012022-12-310001513363Affiliate Investments Spectra A&D Acquisition, Inc. (fka FDS Avionics Corp.) Aerospace & Defense Manufacturing Common Equity (38,493 units) Investment date 12/16/20222023-12-310001513363fdus:UnitedStatesNortheastMember2023-12-310001513363Non-control/Non-affiliate Investments GP&C Operations, LLC (dba Garlock Printing and Converting) Component Manufacturing Common Equity (515,625 units) Investment date 1/22/20212022-12-3100015133632023-05-020001513363Non-control/Non-affiliate Investments Dealerbuilt Acquisition, LLC Information Technology Services Preferred Equity (1,000 Units) Investment date 7/21/20232023-12-310001513363Non-control/Non-affiliate Investments Hallmark Health Care Solutions, Inc. Healthcare Services Common Equity (3,645,752 units) Investment date 9/18/20232023-12-310001513363us-gaap:LineOfCreditMember2015-12-3100015133632019-01-012019-12-310001513363fdus:FirstLienDebtMemberfdus:AppliedDataCorporationMemberus-gaap:SubsequentEventMember2024-01-080001513363fdus:SecondLienDebtMember2022-01-012022-12-310001513363fdus:SpecialDividendMember2023-10-302023-10-300001513363fdus:SupplementalDividendMember2021-11-010001513363Non-control/Non-affiliate Investments Rhino Assembly Company, LLC Common Equity (Class F Units) (710 units) Industry Specialty Distribution Investment date 12/10/20202022-12-310001513363Affiliate Investments Applegate Greenfiber Intermediate Inc ( fka US GreenFiber LLC) Building Products Manufacturing Subordinated Debt Rate Cash 10.00% Rate PIK 0.00% Investment date 12/31/2021 Maturity 12/31/20272022-01-012022-12-310001513363fdus:AffiliateInvestmentsMemberfdus:ApplegateGreenfiberIntermediateIncMember2023-01-012023-12-310001513363fdus:TwoThousandTwentyThreeNotesMember2021-01-012021-12-310001513363us-gaap:ValuationTechniqueDiscountedCashFlowMembersrt:MaximumMemberus-gaap:FairValueInputsLevel3Memberus-gaap:SubordinatedDebtMemberfdus:MeasurementInputWeightedAverageCostOfCapitalMember2022-12-310001513363fdus:ThreePointTwoSixSevenPercentInterestRateMember2023-01-012023-12-310001513363srt:MaximumMemberfdus:InvestmentAdvisoryAgreementMember2023-01-012023-12-310001513363fdus:FirstLienDebtMember2022-12-3100015133632021-06-300001513363Affiliate Investments Applegate Greenfiber Intermediate Inc ( fka US GreenFiber LLC) Building Products Manufacturing Common Equity (7,113 units) Investment date 12/31/20212023-01-012023-12-310001513363fdus:ValuationTechniqueEnterpriseValueMemberus-gaap:FairValueInputsLevel3Memberus-gaap:MeasurementInputRevenueMultipleMembersrt:MinimumMember2023-12-310001513363fdus:FirstLienDebtMember2023-12-310001513363Non-control/Non-affiliate Investments Cardback Intermediate, LLC (dba Chargeback Gurus) Information Technology Services Preferred Equity (495 shares) Investment date 8/10/20212023-01-012023-12-310001513363fdus:ControlInvestmentsMemberfdus:MesaLineServicesLlcMember2022-12-310001513363fdus:SmallBusinessAdministrationDebenturesMembersrt:MinimumMemberus-gaap:SubsequentEventMember2024-02-282024-02-280001513363fdus:UpgCompanyLlcMemberfdus:FirstLienDebtMemberfdus:ComponentManufacturingMemberfdus:NonControlOrNonAffiliateInvestmentsMember2022-12-310001513363us-gaap:MeasurementInputEbitdaMultipleMemberfdus:ValuationTechniqueEnterpriseValueMemberus-gaap:FairValueInputsLevel3Memberfdus:SecondLienDebtMembersrt:MinimumMember2022-12-310001513363Non-control/Non-affiliate Investments Acendre Midco Inc Information Technology Services First Lien Debt Variable Index Spread (S +7.75%) Variable Index Floor (0.50%) Rate Cash 12.30% Rate PIK 0.00% Investment date 10/6/2021 Maturity 10/6/2026 Two2022-12-310001513363fdus:AmeriwaterLlcMemberfdus:FirstLienDebtMemberfdus:ComponentManufacturingMemberfdus:NonControlOrNonAffiliateInvestmentsMember2023-12-310001513363fdus:FivePointNineEightZeroPercentInterestRateMemberfdus:SmallBusinessAdministrationDebenturesMember2023-12-310001513363Non-control/Non-affiliate Investments Dealerbuilt Acquisition, LLC Information Technology Services First Lien Debt Variable Index Spread (S +5.75%) Variable Index Floor (4.00%) Rate Cash 11.15% Rate PIK 1.00% Investment date 7/21/2023 Maturity 7/21/20262023-12-310001513363Non-control/Non-affiliate Investments Level Education Group, LLC (dba CE4Less) Business Services Common Equity (1,000,000 units) Investment date 4/1/20212023-01-012023-12-310001513363Non-control/Non-affiliate Investments Magenta Buyer LLC (dba Trellix) Information Technology Services Second Lien Debt Variable Index Spread (L +8.25%) Variable Index Floor (0.75%) Rate Cash 12.98% Rate PIK 0.00% Investment date 7/19/2022 Maturity 7/27/20292022-01-012022-12-310001513363Affiliate Investments Spectra A&D Acquisition Inc (fka FDS Avionics Corp) Aerospace & Defense Manufacturing Common Equity (12,035 units) Investment date 8/25/20212022-01-012022-12-310001513363Non-control/Non-affiliate Investments AOM Intermediate Holdco, LLC (dbaAllOver Media) Information Technology Services2022-12-310001513363fdus:AffiliateInvestmentsMemberfdus:StewardHoldingLlcMember2021-12-310001513363Non-control/Non-affiliate Investments Hub Acquisition Sub, LLC (dba Hub Pen) Promotional products Common Equity (5,837 units) Investment date 3/23/20162023-01-012023-12-310001513363us-gaap:ValuationTechniqueDiscountedCashFlowMemberus-gaap:FairValueInputsLevel3Memberfdus:FirstLienDebtMemberfdus:MeasurementInputWeightedAverageCostOfCapitalMember2023-12-310001513363Non-control/Non-affiliate Investments Suited Connector LLC Information Technology Services Second Lien Debt Rate Cash/PIK 0.00%/12.00% Investment date 10/29/2021 Maturity 6/1/20282023-01-012023-12-310001513363Non-control/Non-affiliate Investments American AllWaste LLC (dba WasteWater Transport Services) Environmental Industries First Lien Debt Variable Index Spread (S + 6.50%) Variable Index Floor (1.00%) Rate Cash 12.16% Rate PIK 0.00% Investment date 6/28/2021 Maturity 6/28/20262023-01-012023-12-310001513363fdus:TwoPointSevenNineThreePercentInterestRateMember2022-12-310001513363fdus:TediaCompanyLlcRevolvingLoanMember2023-12-310001513363Control Investments US GreenFiber LLC Building Products Manufacturing Common Equity (2,522 units) Investment Date 7/3/20142023-12-310001513363Non-control/Non-affiliate Investments GMP HVAC, LLC (dba McGee Heating & Air, LLC) Utilities: Services Revolving Loan ($1,000 unfunded commitment) Variable Index Spread (S +7.00%) Variable Index Floor (2.00%) Rate Cash 12.38% Rate PIK 0.00% Investment date 12/8/2023 Maturity 12/8/20282023-01-012023-12-310001513363Non-control/Non-affiliate Investments Micronics Filtration Holdings, Inc. (dba Micronics Engineered Filtration Group, Inc.) Component Manufacturing2022-12-310001513363Non-control/Non-affiliate Investments USG AS Holdings, LLC Industry Utilities: Services First Lien Debt Variable Index Spread (S + 8.50%) Variable Index Floor (2.50%) Rate Cash 14.04% Rate PIK 0.00% Investment date 2/21/2023 2023-12-3100015133632023-10-300001513363Non-control/Non-affiliate Investments Acendre Midco Inc Information Technology Services2023-12-310001513363fdus:January2026NotesMember2022-01-012022-12-310001513363Non-control/Non-affiliate Investments Worldwide Express Operations, LLC Transportation services Second Lien Debt Variable Index Spread (L + 7.00%) Variable Index Floor (0.75%) Rate Cash 11.73% Rate PIK 0.00% Investment date 8/2/2021 Maturity 7/26/20292022-01-012022-12-310001513363Non-control/Non-affiliate Investments Acendre Midco Inc Information Technology Services Revolving Loan ($1,000 unfunded commitment) Variable Index Spread (S +7.50%) Variable Index Floor (0.50%) Rate Cash 12.30% Rate PIK 0.00% Investment date 10/6/20212022-01-012022-12-3100015133632021-11-010001513363Non-control/Non-affiliate Investments Detechtion Holdings, LLC Information Technology Services Common Equity (500,000 units) Investment date 6/21/20232023-01-012023-12-310001513363us-gaap:MeasurementInputEbitdaMultipleMemberfdus:ValuationTechniqueEnterpriseValueMemberus-gaap:FairValueInputsLevel3Memberus-gaap:SubordinatedDebtMember2023-12-310001513363Non-control/Non-affiliate Investments ISI PSG Holdings, LLC (dba Incentive Solutions, Inc.) Business Services2023-12-310001513363Non-control/Non-affiliate Investments USG AS Holdings, LLC Industry Utilities: Services2023-12-310001513363Non-control/Non-affiliate Investments United Biologics, LLC.2022-12-310001513363fdus:WesternsSmokehouseLlcMemberfdus:NonControlOrNonAffiliateInvestmentsMemberfdus:DelayedDrawCommitmentFourMemberfdus:ConsumerProductsSectorMember2022-12-310001513363fdus:DividendReinvestmentPlanMember2023-10-012023-12-310001513363fdus:MirageTrailersLlcMemberfdus:AffiliateInvestmentsMember2021-12-310001513363Control Investments US GreenFiber LLC Building Products Manufacturing Common Equity (1,022,813 units) Investment Date 7/1/20202023-12-310001513363Non-control/Non-affiliate Investments2022-12-310001513363Non-control/Non-affiliate Investments White Label Communication, LLC Industry Information Technology Services Common Equity (536 units) Investment date 10/11/20232023-01-012023-12-310001513363Non-control/Non-affiliate Investments Bad Boy Mowers JV Acquisition, LLC Consumer Products Subordinated Debt Rate Cash 9.00% Rate PIK 4.50% Investment date 11/9/2023 Maturity 11/9/20302023-12-310001513363Non-control/Non-affiliate Investments Education Incites, LLC (dba Acceleration Academies) Business Services Second Lien Debt Cash 12.75% Rate PIK 0.00% Investment date 10/31/2022 Maturity 10/29/20272023-01-012023-12-3100015133632021-08-020001513363us-gaap:SubordinatedDebtMember2022-12-310001513363fdus:IsiPsgHoldingsLlcMemberfdus:BusinessServicesMemberfdus:FirstLienDebtOneMemberfdus:NonControlOrNonAffiliateInvestmentsMember2023-12-310001513363srt:MaximumMemberfdus:ValuationTechniqueEnterpriseValueMemberus-gaap:FairValueInputsLevel3Memberus-gaap:MeasurementInputRevenueMultipleMemberfdus:FirstLienDebtMember2022-12-310001513363fdus:November2026NotesMember2021-01-012021-12-310001513363fdus:TwentyTwentyThreeNotesMember2023-01-012023-12-310001513363Control Investments EBL LLC (EbLens) Retail Second Lien Debt Rate Cash 0.00% Rate PIK 13.00% Investment date 10/3/2022 Maturity 10/3/20252022-12-310001513363fdus:UnableToInvestSignificantPortionOfNetProceedsFromOofferingOrFromExitingIinvestmentOrOtherCapitalOnAcceptableTermMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments Worldwide Express Operations, LLC Industry Transportation services2023-12-310001513363Non-control/Non-affiliate Investments Ad Info Parent, Inc. (dba MediaRadar) Information Technology Services First Lien Debt Variable Index Spread (S+6.25%) Variable Index Floor (1.00%) Rate Cash 11.75% Rate PIK 0.00% Investment date 11/1/2023 Maturity 9/16/20292023-12-310001513363Non-control/Non-affiliate Investments Winona Foods, Inc. Industry Specialty Distribution First Lien Debt Variable Index Spread (S + 11.00%) Variable Index Floor (6.00%) Rate Cash 12.00% Rate PIK 5.00% Investment date 12/13/2023 Maturity 6/13/20272023-01-012023-12-310001513363fdus:AdministrationAgreementMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments BP Thrift Buyer, LLC (dba myUnique and Ecothrift) Retail Common Equity (1000 units) Investment date 9/13/20222022-01-012022-12-310001513363Non-control/Non-affiliate Investments BurgerFi International, LLC (dba BurgerFi) Restaurants Preferred Equity (9,787 units) Investment date 11/3/20222023-01-012023-12-310001513363us-gaap:MeasurementInputEbitdaMultipleMemberfdus:ValuationTechniqueEnterpriseValueMemberus-gaap:FairValueInputsLevel3Membersrt:MinimumMemberus-gaap:SubordinatedDebtMember2023-12-310001513363fdus:NotesMember2020-01-012020-12-310001513363Affiliate Investments Spectra A&D Acquisition Inc (fka FDS Avionics Corp) Aerospace & Defense Manufacturing Common Equity (4,633 units) Investment date 9/16/20222022-01-012022-12-310001513363Non-control/Non-affiliate Investments Level Education Group, LLC (dba CE4Less) Business Services First Lien Debt Variable Index Spread (S + 6.75%) Variable Index Floor (2.00%) Rate Cash 11.41% Rate PIK 0.00% Investment date 4/1/2021 Maturity 4/1/20262023-12-310001513363fdus:UnitedStatesWestMember2022-01-012022-12-310001513363Non-control/Non-affiliate Investments AOM Intermediate Holdco, LLC (dbaAllOver Media) Information Technology Services Common Equity (1,232 units) Investment date 2/1/20222023-01-012023-12-310001513363fdus:SpecialDividendMember2023-08-012023-08-010001513363fdus:February2024NotesMember2019-02-082019-02-080001513363Non-control/Non-affiliate Investments Pool & Electrical Products, LLC Oil & Gas Services Common Equity (18,298 units) Investment date 10/28/20202023-12-310001513363us-gaap:LineOfCreditMember2023-01-012023-12-310001513363fdus:November2024NotesMember2020-01-012020-12-310001513363fdus:SmallBusinessAdministrationDebenturesMember2019-01-012019-12-310001513363srt:MaximumMemberus-gaap:MeasurementInputEbitdaMultipleMemberfdus:ValuationTechniqueEnterpriseValueMemberus-gaap:FairValueInputsLevel3Member2023-12-310001513363Control Investments EBL LLC (EbLens) Retail Common Equity (375 units) ($375 unfunded commitment) Investment Date 10/3/20222022-01-012022-12-310001513363Non-control/Non-affiliate Investments NWS Technologies, LLC Utilities: Services2023-12-310001513363fdus:SpecialDividendMember2021-08-020001513363fdus:November2026NotesMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments Cardboard Box LLC (dba Anthonys Coal Fired Pizza) Restaurants2022-12-310001513363Non-control/Non-affiliate Investments PowerGrid Services Acquisition, LLC Utilities: Services Common Equity (5,341 units) Investment date 9/21/20212022-12-310001513363Non-control/Non-affiliate Investments Barefoot Mosquito and Pest Control, LLC Consumer Services Common Equity (3,974 units) Investment date 12/22/20232023-01-012023-12-310001513363Non-control/Non-affiliate Investments Hub Acquisition Sub, LLC (dba Hub Pen) Promotional products Preferred Equity (868 units) Investment date 10/16/20202022-01-012022-12-310001513363Affiliate Investments Spectra A&D Acquisition Inc (fka FDS Avionics Corp) Aerospace & Defense Manufacturing Common Equity (4,633 units) Investment date 9/16/20222022-12-310001513363Total Affiliate Investments2022-12-310001513363fdus:FirstLienDebtMemberfdus:NonControlOrNonAffiliateInvestmentsMemberfdus:ApmIntermediateHoldingsLlcMemberfdus:BuildingProductsManufacturingMember2023-12-310001513363fdus:GmpHvacLlcDbaMcgeeHeatingAirLlcRevolvingLoanMember2023-12-310001513363fdus:R1HoldingsLlcDbaRoadoneIntermodalogisticsCommonEquityMember2023-12-310001513363Non-control/Non-affiliate Investments Acendre Midco Inc Information Technology Services First Lien Debt Variable Index Spread (S +7.75%) Variable Index Floor (0.50%) Rate Cash 13.41% Rate PIK 0.00% Investment date 10/6/2021 Maturity 10/6/20262023-12-310001513363Total Affiliate Investments2023-12-310001513363Non-control/Non-affiliate Investments ISI PSG Holdings, LLC (dba Incentive Solutions, Inc.) Business Services Common Equity (256,964 units) Investment date 4/5/20212023-01-012023-12-310001513363fdus:AdministrationAgreementMember2023-12-310001513363fdus:January2026NotesMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments Rhino Assembly Company, LLC Specialty Distribution Second Lien Debt Rate Cash/PIK 11.50%/0.00% Investment date 8/11/2017 Maturity 2/11/20262022-12-3100015133632017-01-012017-12-310001513363Non-control/Non-affiliate Investments IBH Holdings, LLC (fka Inflexxion, Inc.) Business Services Common Equity (150,000 units) Investment date 6/20/20182022-12-310001513363fdus:RegulationsGoverningOperationsAsBdcMember2023-01-012023-12-310001513363fdus:AffiliateInvestmentsMemberfdus:SpectraAAndDAcquisitionIncMember2023-12-310001513363fdus:FivePointThreeFourOnePercentInterestRateTwoMember2023-12-310001513363Non-control/Non-affiliate Investments Acendre Midco Inc Information Technology Services Preferred Equity (77,016 shares) Investment date 9/26/20222023-01-012023-12-310001513363Non-control/Non-affiliate Investments Acendre Midco Inc Information Technology Services Revolving Loan ($250 unfunded commitment) Variable Index Spread (S +7.75%) Variable Index Floor (0.50%) Rate Cash 13.41% Rate PIK 0.00% Investment date 10/6/2021 Maturity 10/6/20262023-12-310001513363Non-control/Non-affiliate Investments Acendre Midco Inc Information Technology Services Revolving Loan ($250 unfunded commitment) Variable Index Spread (S +7.75%) Variable Index Floor (0.50%) Rate Cash 13.41% Rate PIK 0.00% Investment date 10/6/2021 Maturity 10/6/20262023-01-012023-12-310001513363Non-control/Non-affiliate Investments Dataguise, Inc. Information Technology Services2022-12-310001513363fdus:LackOfLiquidityMember2023-01-012023-12-310001513363fdus:SupplementalDividendMember2022-11-030001513363Non-control/Non-affiliate Investments Detechtion Holdings, LLC Information Technology Services Common Equity (500,000 units) Investment date 6/21/20232023-12-310001513363fdus:SupplementalDividendMember2021-11-012021-11-010001513363fdus:R1HoldingsLlcDbaRoadoneIntermodalogisticsSeniorSubordinatedDebtMember2023-12-310001513363Non-control/Non-affiliate Investments Allredi LLC (fka Marco Group International OpCo, LLC) Industrial Cleaning & Coatings Second Lien Debt Rate Cash 5.00% Rate PIK 10.00% Investment date 3/2/2020 Maturity 9/2/20262023-01-012023-12-310001513363fdus:RisksRelatingToOurCommonStockMember2023-01-012023-12-310001513363us-gaap:ValuationTechniqueDiscountedCashFlowMemberus-gaap:FairValueInputsLevel3Memberfdus:FirstLienDebtMembersrt:WeightedAverageMemberfdus:MeasurementInputWeightedAverageCostOfCapitalMember2022-12-310001513363fdus:AffiliateInvestmentsMemberfdus:PfanstiehlIncMember2022-01-012022-12-310001513363fdus:FivePointEightSevenFiveNotesDueMember2018-02-020001513363fdus:EighteenAndSixteenPortfolioCompanyInvestmentsMember2023-12-310001513363Affiliate Investments Steward Holding LLC (dba Steward Advanced Materials) Aerospace & Defense Manufacturing Common Equity (1,000,000 units) Investment Date 11/12/20152023-12-310001513363fdus:InformationTechnologyServicesMemberfdus:FirstLienDebtMemberfdus:NonControlOrNonAffiliateInvestmentsMemberfdus:CardbackIntermediateLLCMember2022-12-310001513363Non-control/Non-affiliate Investments Education Incites, LLC (dba Acceleration Academies) Business Services Second Lien Debt Cash 12.75% Rate PIK 0.00% Investment date 10/31/2022 Maturity 10/29/20272022-12-310001513363us-gaap:MeasurementInputEbitdaMultipleMemberfdus:ValuationTechniqueEnterpriseValueMemberus-gaap:FairValueInputsLevel3Memberfdus:SecondLienDebtMembersrt:WeightedAverageMember2022-12-310001513363us-gaap:FairValueInputsLevel3Memberfdus:SecondLienDebtMemberus-gaap:FairValueMeasurementsRecurringMember2023-12-310001513363Non-control/Non-affiliate Investments Sonicwall US Holdings, Inc. Information Technology Services Second Lien Debt Variable Index Spread / Floor (S + 7.50%) / (0.00%) Rate Cash/PIK 13.01%/0.00% Investment date 9/6/2022 Maturity 5/18/20262023-01-012023-12-310001513363Non-control/Non-affiliate Investments CTM Group, Inc. Business Services Subordinated Debt Rate Cash 11.50% Rate PIK 2.00% Investment date 2/28/2023 Maturity 11/30/20272023-01-012023-12-310001513363fdus:SignificantChangeInNetAssetValueMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments Acendre Midco Inc Information Technology Services Preferred Equity (77,016 shares) Investment date 9/26/20222023-12-310001513363fdus:AffiliateInvestmentsMemberfdus:MedsurantHoldingsLlcMember2022-01-012022-12-310001513363fdus:FivePointThreeFourOnePercentInterestRateMember2023-01-012023-12-310001513363fdus:TwoPointOneSevenTwoPercentInterestRateMember2022-12-310001513363fdus:EblLlcMemberfdus:ControlInvestmentsMember2022-12-310001513363fdus:NonControlOrNonAffiliateInvestmentsMember2023-01-012023-12-310001513363Affiliate Investments Medsurant Holding LLC Healthcare Services Warrant (252,588 units) Investment date 4/12/20112022-12-310001513363us-gaap:FairValueInputsLevel3Memberfdus:SecondLienDebtMemberus-gaap:FairValueMeasurementsRecurringMember2021-12-310001513363Non-control/Non-affiliate Investments 2KDirect Inc (dba iPromote) Information Technology Services Common Equity (1,000,000 units) Investment date 6/25/20212023-12-310001513363Non-control/Non-affiliate Investments Barefoot Mosquito and Pest Control, LLC Consumer Services First Lien Debt Variable Index Spread (S + 7.00%) Variable Index Floor (2.00%) Rate Cash 12.37% Rate PIK 0.00% Investment date 12/22/2023 Maturity 12/22/20292023-01-012023-12-310001513363fdus:SpecialDividendMember2021-11-012021-11-010001513363fdus:InformationTechnologyServicesMemberfdus:TwoKDirectIncMemberfdus:FirstLienDebtOneMemberfdus:NonControlOrNonAffiliateInvestmentsMember2022-12-310001513363Non-control/Non-affiliate Investments Auto CRM LLC (dba Dealer Holdings) Information Technology Services First Lien Debt Variable Index Spread (P + 5.50%) Variable Index Floor (3.25%) Rate Cash 14.00% Rate PIK 0.85% Investment date 10/1/2021 Maturity 10/1/20262023-12-310001513363fdus:FirstLienDebtMemberfdus:NonControlOrNonAffiliateInvestmentsMemberfdus:ComponentManufacturingMemberfdus:MicronicsFiltrationHoldingsIncDbaMicronicsEngineeredFiltrationGroupIncMember2023-12-310001513363fdus:TwentyTwentyThreeNotesMember2018-02-022018-02-020001513363us-gaap:MeasurementInputEbitdaMultipleMembersrt:MaximumMemberfdus:ValuationTechniqueEnterpriseValueMemberus-gaap:FairValueInputsLevel3Member2022-12-310001513363fdus:PrepaymentsOfDebtInvestmentsByPortfolioCompaniesMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments CIH Intermediate, LLC Business Services Preferred Equity (563 shares) Investment date 3/3/20222022-12-310001513363fdus:SmallBusinessAdministrationDebenturesMemberfdus:SixPointZeroTwoSixPercentInterestRateMembersrt:ScenarioForecastMember2024-03-310001513363Affiliate Investments Spectra A&D Acquisition Inc (fka FDS Avionics Corp) Aerospace & Defense Manufacturing First Lien Debt Variable Index Spread (L +5.50%) Variable Index Floor (1.00%) Rate Cash 10.23% Rate PIK 0.00% Investment date 2/12/2021 Maturity 2/11/20262022-12-310001513363fdus:ThreePointFiveZeroPercentNotesDueTwoThousandTwentySixMember2022-12-310001513363Non-control/Non-affiliate Investments Power Grid Components, Inc. Specialty Distribution Second Lien Debt Industry Rate Cash/PIK 11.00%/0.50% Investment date 4/12/2018 Maturity 12/2/20252022-01-012022-12-310001513363Affiliate Investments Medsurant Holdings LLC Healthcare Services Preferred Equity (84,997 units) Investment date 4/12/20112023-01-012023-12-310001513363us-gaap:CarryingReportedAmountFairValueDisclosureMember2022-12-310001513363Non-control/Non-affiliate Investments R1 Holdings, LLC (dba RoadOne IntermodaLogistics) Transportation services Subordinated Debt ($417 unfunded commitment) Rate Cash/PIK 8.75%/5.00% Investment date 12/30/2022 Maturity 6/30/20292022-12-310001513363fdus:FirstLienDebtMember2023-12-310001513363fdus:DiversifiedSearchLlcMemberfdus:FirstLienDebtMemberfdus:BusinessServicesMemberfdus:NonControlOrNonAffiliateInvestmentsMember2023-12-310001513363Non-control/Non-affiliate Investments Tiger Calcium Services Inc. Industry Transportation services Second Lien Debt Rate Cash 12.50% Rate PIK 0.00% Investment date 12/21/2022 Maturity 5/31/20252022-01-012022-12-310001513363Non-control/Non-affiliate Investments Comply365, LLC Aerospace & Defense Manufacturing Common Equity ( 868,922 units) Investment date 12/22/20232023-01-012023-12-310001513363Non-control/Non-affiliate Investments Ipro Tech, LLC Information Technology Services Preferred Equity (682,075 units) Investment date 7/28/20212022-01-012022-12-310001513363fdus:SupplementalDividendMember2023-02-150001513363fdus:DifficultyInPayingRequiredDistributionMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments Diversified Search LLC Business Services Common Equity (573 units) Investment date 2/7/20192023-01-012023-12-310001513363fdus:DispositionOfInvestmentsMayResultInContingentLiabilitiesMember2023-01-012023-12-310001513363fdus:UsGreenfiberLlcMemberus-gaap:CarryingReportedAmountFairValueDisclosureMember2022-12-310001513363Non-control/Non-affiliate Investments Worldwide Express Operations, LLC Transportation services Second Lien Debt Variable Index Spread (L + 7.00%) Variable Index Floor (0.75%) Rate Cash 11.73% Rate PIK 0.00% Investment date 8/2/2021 Maturity 7/26/20292022-12-310001513363Non-control/Non-affiliate Investments OnePath Systems, LLC Information Technology Services2023-12-310001513363Non-control/Non-affiliate Investments Suited Connector LLC Information Technology Services2023-12-310001513363fdus:UnitedStatesSoutheastMember2023-12-310001513363Non-control/Non-affiliate Investments NWS Technologies, LLC Utilities: Services First Lien Debt Variable Index Spread (S+8.00%) Variable Index Floor (2.50%) Rate Cash 13.39% Rate PIK 0.00% Investment date 6/20/2023 Maturity 6/16/20282023-01-012023-12-310001513363Non-control/Non-affiliate Investments Allredi LLC (fka Macro Group International OpCo. LLC) Industrial Cleaning & Coatings Common Equity (570,636 units) Investment date 7/21/20172023-01-012023-12-3100015133632022-02-152022-02-150001513363fdus:InformationTechnologyServicesMemberfdus:FirstLienDebtMemberfdus:NonControlOrNonAffiliateInvestmentsMemberfdus:AutoCrmLlcMember2022-12-3100015133632014-01-012014-12-310001513363fdus:RaymondJamesAndAssociatesIncAndRobertWBairdAndCoMemberus-gaap:CommonStockMember2023-07-012023-09-300001513363us-gaap:FairValueInputsLevel2Member2022-12-310001513363Non-control/Non-affiliate Investments Level Education Group, LLC (dba CE4Less) Business Services First Lien Debt Variable Index Spread (S + 6.75%) Variable Index Floor (2.00%) Rate Cash 11.41% Rate PIK 0.00% Investment date 4/1/2021 Maturity 4/1/20262023-01-012023-12-310001513363Non-control/Non-affiliate Investments Power Grid Components, Inc. Specialty Distribution Preferred Equity (392 shares) Investment date 4/12/20182022-01-012022-12-310001513363Non-control/Non-affiliate Investments ISI PSG Holdings, LLC (dba Incentive Solutions, Inc.) Business Services First Lien Debt Variable Index Spread (S+7.50%) Variable Index Floor (0.50%) Rate Cash 9.50% Rate PIK 0.00% Investment date 6/30/2021 Maturity 4/5/20262023-01-012023-12-310001513363fdus:SmallBusinessAdministrationDebenturesMember2023-01-012023-12-310001513363fdus:IssueOfPreferredStockAndOrDebtSecuritiesNetAssetValueAndMarketValueOfCommonStockMember2023-01-012023-12-310001513363us-gaap:AccumulatedDistributionsInExcessOfNetIncomeMember2020-12-310001513363Non-control/Non-affiliate Investments Virtex Enterprises, LP Industry Component Manufacturing Second Lien Debt Variable Index Spread (S + 9.75%) Variable Index Floor (2.50%) Rate Cash 5.46% Rate PIK 9.75% Investment date 4/13/2022 Maturity 6/30/20262023-01-012023-12-310001513363fdus:InformationTechnologyServicesMemberfdus:FirstLienDebtMemberfdus:AppliedDataCorporationMemberfdus:NonControlOrNonAffiliateInvestmentsMember2022-12-310001513363srt:MaximumMember2023-01-012023-12-310001513363fdus:SecuredBorrowingsMember2023-12-310001513363Non-control/Non-affiliate Investments Prime AE Group, Inc. Business Services First Lien Debt Variable Index Spread (S + 7.25%) Variable Index Floor (2.00%) Rate Cash 12.72% Rate PIK 0.00% Investment date 11/25/2019 Maturity 11/25/20242023-01-012023-12-310001513363Non-control/Non-affiliate Investments Ipro Tech, LLC Information Technology Services First Lien Debt Variable Index Spread (S +7.00%) Variable Index Floor (1.00%) Rate Cash 11.69% Rate PIK 1.00% Investment date 6/30/2020 Maturity 7/28/20252022-12-310001513363fdus:ValuationTechniqueEnterpriseValueMemberus-gaap:FairValueInputsLevel3Memberfdus:MeasurementInputAssetCoverageMemberfdus:FirstLienDebtMembersrt:MinimumMember2022-12-310001513363fdus:AffiliateInvestmentsMemberfdus:ApplegateGreenfiberIntermediateIncMember2022-12-310001513363Non-control/Non-affiliate Investments 2KDirect Inc (dba iPromote) Information Technology Services Common Equity (1,000,000 units) Investment date 6/25/20212022-01-012022-12-310001513363Non-control/Non-affiliate Investments GMP HVAC, LLC (dba McGee Heating & Air, LLC) Utilities: Services Preferred Equity (1,000 units) Investment date 12/8/20232023-01-012023-12-310001513363fdus:FivePointFourthreeNinePercentInterestRateMember2021-12-310001513363us-gaap:CommonStockMember2022-11-100001513363Non-control/Non-affiliate Investments Cardback Intermediate, LLC (dba Chargeback Gurus) Information Technology Services First Lien Debt Variable Index Spread (S+6.50%) Variable Index Floor (0.75%) Rate Cash 12.16% Rate PIK 0.00% Investment date 08/10/2021 Maturity 8/10/20262023-01-012023-12-310001513363fdus:ThreePointTwoZeroNinePercentInterestRateMember2023-12-310001513363fdus:MarketConditionsMember2023-01-012023-12-310001513363fdus:MayNotHaveFundsToMakeAdditionalInvestmentMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments Elements Brands, LLC Consumer Products2023-12-310001513363fdus:EquityInvestmentMember2022-12-310001513363Non-control/Non-affiliate Investments Level Education Group, LLC (dba CE4Less) Business Services2023-12-310001513363fdus:February2024NotesMember2019-02-192019-02-190001513363fdus:AffiliateInvestmentsMemberfdus:PfanstiehlIncMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments Elements Brands, LLC Consumer Products First Lien Debt Cash 12.25% Rate PIK 0.00% Investment date 12/31/2020 Maturity 6/30/20242022-12-310001513363Affiliate Investments Pfanstiehl Inc Health Products2022-12-310001513363Non-control/Non-affiliate Investments Level Education Group, LLC (dba CE4Less) Business Services First Lien Debt Variable Index Spread (L +6.75%) Variable Index Floor (0.50%) Rate Cash 10.49% Rate PIK 0.00% Investment date 4/1/2021 Maturity 4/1/20262022-12-310001513363Non-control/Non-affiliate Investments Combined Systems, Inc. Aerospace & Defense Manufacturing2022-12-310001513363Non-control/Non-affiliate Investments Virtex Enterprises, LP Industry Component Manufacturing2023-12-310001513363fdus:DividendReinvestmentPlanMember2021-01-012021-03-3100015133632023-10-302023-10-300001513363Non-control/Non-affiliate Investments 2KDirect, Inc. (dba iPromote) Information Technology Services First Lien Debt Variable Index Spread (S+7.25%) Variable Index Floor (0.50%) Rate Cash 9.05% Rate PIK 0.00% Investment date 7/30/2021 Maturity 6/25/20262023-01-012023-12-310001513363fdus:K2MergerAgreementAgentLlcMemberus-gaap:CarryingReportedAmountFairValueDisclosureMember2022-12-310001513363Non-control/Non-affiliate Investments APM Intermediate Holdings, LLC (dba Artistic Paver Manufacturing, Inc.) Building Products Manufacturing Common Equity Investment date 11/8/20222022-12-3100015133632023-12-310001513363Non-control/Non-affiliate Investments Tedia Company, LLC Healthcare Products First Lien Debt Variable Index Spread (S +7.75%) Variable Index Floor (1.00%) Rate Cash 11.57% Rate PIK 0.00% Investment date 03/04/2022 Maturity 03/04/20272022-01-012022-12-310001513363Non-control/Non-affiliate Investments BP Thrift Buyer, LLC (dba myUnique and Ecothrift) Retail First Lien Debt Variable Index Spread (S +5.75%) Variable Index Floor (1.50%) Rate Cash 8.89% Rate PIK 0.00% Investment date 5/12/2023 Maturity 9/13/20272023-12-310001513363us-gaap:LineOfCreditMember2014-01-012014-12-310001513363fdus:SecondLienDebtMember2023-12-310001513363Non-control/Non-affiliate Investments Hub Acquisition Sub, LLC (dba Hub Pen) Promotional products Common Equity (637 units) Investment date 8/7/20232023-12-310001513363Non-control/Non-affiliate Investments Barefoot Mosquito and Pest Control, LLC Consumer Services Preferred Equity (15,000 units) Investment date 12/22/20232023-01-012023-12-310001513363us-gaap:MeasurementInputEbitdaMultipleMemberfdus:ValuationTechniqueEnterpriseValueMemberus-gaap:FairValueInputsLevel3Memberus-gaap:SubordinatedDebtMember2022-12-310001513363us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:SubordinatedDebtMember2021-12-310001513363us-gaap:LineOfCreditMember2019-12-310001513363us-gaap:EquitySecuritiesMember2022-12-310001513363fdus:InformationTechnologyServicesMemberfdus:TwoKDirectIncMemberfdus:FirstLienDebtMemberfdus:NonControlOrNonAffiliateInvestmentsMember2022-12-310001513363Affiliate Investments Applegate Greenfiber Intermediate Inc ( fka US GreenFiber LLC) Building Products Manufacturing Common Equity (7,113 units) Investment date 12/31/20212022-01-012022-12-310001513363Affiliate Investments Spectra A&D Acquisition Inc (fka FDS Avionics Corp) Aerospace & Defense Manufacturing Common Equity (38,493 units) Investment date 12/16/20222022-01-012022-12-310001513363Non-control/Non-affiliate Investments Applied Data Corporation Information Technology Services Preferred Equity (1,184,711 units) Investment date 11/6/20202022-12-310001513363Non-control/Non-affiliate Investments Detechtion Holdings, LLC2023-12-310001513363fdus:FivePointEightSixOnePercentInterestRateOneMember2023-01-012023-12-310001513363fdus:InformationTechnologyServicesMemberfdus:FirstLienDebtMemberfdus:TwoKDirectIncMemberfdus:NonControlOrNonAffiliateInvestmentsMember2023-12-310001513363Non-control/Non-affiliate Investments 2KDirect Inc (dba iPromote) Information Technology Services First Lien Debt Variable Index Spread (L +6.75%) Variable Index Floor (0.50%) Rate Cash 11.48% Rate PIK 0.00% Investment date 6/25/2021 Maturity 6/25/20262022-01-012022-12-310001513363fdus:AmericanAllwasteLlcMemberfdus:FirstLienDebtMemberfdus:NonControlOrNonAffiliateInvestmentsMemberfdus:EnvironmentalIndustriesMember2022-12-310001513363Non-control/Non-affiliate Investments Tedia Company, LLC. Healthcare Products Revolving Loan ($2,400 unfunded commitment) Variable Index Spread (S + 7.75%) Variable Index Floor (1.00%) Rate Cash 13.41% Rate PIK 0.00% Investment date 3/4/2022 Maturity 3/4/20272023-12-310001513363Non-control/Non-affiliate Investments Rhino Assembly Company, LLC Specialty Distribution Preferred Equity (Units N/A) Investment date 12/10/20202022-01-012022-12-310001513363fdus:InformationTechnologyServicesMemberfdus:FirstLienDebtMemberfdus:NonControlOrNonAffiliateInvestmentsMemberfdus:CardbackIntermediateLLCMember2023-12-310001513363Affiliate Investments Medsurant Holdings LLC Healthcare Services Preferred Equity (84,997 units) Investment date 4/12/20112023-12-310001513363fdus:UnitedStatesSouthwestMember2023-01-012023-12-310001513363us-gaap:FairValueInputsLevel1Memberfdus:EquityInvestmentMember2022-12-310001513363fdus:SbaRegulationsMember2023-01-012023-12-310001513363us-gaap:FairValueInputsLevel1Memberus-gaap:MoneyMarketFundsMember2022-12-310001513363us-gaap:LineOfCreditMember2023-12-310001513363fdus:ObligatedToPayInvestmentAdvisorIncentiveCompensationMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments Ad Info Parent, Inc. (dba MediaRadar) Information Technology Services Preferred Equity (1,250,000 units) Investment date 11/1/20232023-01-012023-12-310001513363Non-control/Non-affiliate Investments Tedia Company, LLC Healthcare Products First Lien Debt Variable Index Spread (S +7.75%) Variable Index Floor (1.00%) Rate Cash 11.57% Rate PIK 0.00% Investment date 03/04/2022 Maturity 03/04/20272022-12-310001513363Non-control/Non-affiliate Investments BCM One Group Holdings, Inc. Information Technology Services Subordinated Debt Rate Cash 10.25% Rate PIK 00.00% Investment date 11/17/2021 Maturity 11/17/20282022-01-012022-12-310001513363Non-control/Non-affiliate Investments LifeSpan Biosciences, Inc. Healthcare Products Common Equity (100 shares) Investment date 3/19/20212023-12-310001513363us-gaap:FairValueInputsLevel1Memberfdus:EquityInvestmentMember2023-12-310001513363us-gaap:FairValueInputsLevel1Member2022-12-310001513363Non-control/Non-affiliate Investments Micronics Filtration Holdings, Inc. (dba Micronics Engineered Filtration Group, Inc.) Component Manufacturing Common Equity (14,400 units) Investment date 2/17/20222023-12-310001513363fdus:AffiliateInvestmentsMember2022-12-310001513363Non-control/Non-affiliate Investments Comply365, LLC Aerospace & Defense Manufacturing Common Equity Investment date 12/11/20202022-01-012022-12-3100015133632024-02-270001513363Affiliate Investments Applegate Greenfiber Intermediate Inc ( fka US GreenFiber LLC) Building Products Manufacturing Subordinated Debt Rate Cash 10.00% Rate PIK 0.00% Investment date 12/31/2021 Maturity 12/31/20272023-12-3100015133632022-06-300001513363Non-control/Non-affiliate Investments White Label Communication, LLC Industry Information Technology Services2023-12-310001513363Non-control/Non-affiliate Investments Diversified Search LLC Business Services Common Equity Investment date 2/7/20192022-12-310001513363fdus:SeniorSecuredRevolvingCreditFacilityMember2022-12-310001513363fdus:SpecialDividendMember2022-11-030001513363Non-control/Non-affiliate Investments American AllWaste LLC (dba WasteWater Transport Services) Environmental Industries Preferred Equity (141 units) Investment Date 11/2/20202023-01-012023-12-310001513363fdus:R1HoldingsLlcDbaRoadoneIntermodalogisticsFirstLienDebtMember2023-12-310001513363Non-control/Non-affiliate Investments Applied Data Corporation Information Technology Services Preferred Equity Investment date 11/6/20202022-12-310001513363Non-control/Non-affiliate Investments Zonkd, LLC Industry Component Manufacturing First Lien Debt Variable Index Spread (S + 10.00%) Variable Index Floor (1.00%) Rate Cash 16.63% Rate PIK 0.00% Investment date 3/18/2022 Maturity 3/18/20272023-01-012023-12-310001513363fdus:InformationTechnologyServicesMemberfdus:FishbowlSolutionsLlcMemberfdus:FirstLienDebtMemberfdus:NonControlOrNonAffiliateInvestmentsMember2022-12-310001513363fdus:ThreePointOneNineZeroPercentInterestRateMember2022-12-310001513363fdus:SupplementalDividendMember2023-02-152023-02-150001513363fdus:NonControlOrNonAffiliateInvestmentsMember2022-12-310001513363Affiliate Investments Medsurant Holdings LLC Healthcare Services Warrant (252,588 units) Investment date 4/12/20112023-12-310001513363fdus:StockholdersNotParticipateInShareTradeAtDiscountToNetAssetValuePerShareMayExperienceImmediateDilutionMember2023-01-012023-12-310001513363fdus:ThreePointFiveZeroPercentNotesDueTwoThousandTwentySixMember2021-10-082021-10-080001513363Non-control/Non-affiliate Investments BP Thrift Buyer, LLC (dba myUnique and Ecothrift) Retail First Lien Debt Variable Index Spread (S +5.75%) Variable Index Floor (1.50%) Rate Cash 8.89% Rate PIK 0.00% Investment date 5/12/2023 Maturity 9/13/20272023-01-012023-12-310001513363fdus:AffiliateInvestmentsMemberfdus:PfanstiehlIncMember2021-12-310001513363Non-control/Non-affiliate Investments Road Safety Services, Inc.2022-12-310001513363fdus:EquityInvestmentMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2021-12-310001513363Control Investments EBL LLC (EbLens) Retail Common Equity (75,000 units) Investment Date 7/13/20172022-01-012022-12-310001513363Non-control/Non-affiliate Investments Virtex Enterprises, LP Industry Component Manufacturing Second Lien Debt Variable Index Spread (S + 9.75%) Variable Index Floor (2.50%) Rate Cash 5.46% Rate PIK 9.75% Investment date 4/13/2022 Maturity 6/30/20262023-12-310001513363fdus:UnitedStatesNortheastMember2022-01-012022-12-310001513363fdus:GlobalClimateChangeMember2023-01-012023-12-310001513363srt:MaximumMemberfdus:FirstLienDebtMemberus-gaap:SubsequentEventMemberfdus:JanusHealthTechnologiesIncMember2024-01-030001513363Non-control/Non-affiliate Investments 2KDirect Inc (dba iPromote) Information Technology Services2022-12-310001513363Affiliate Investments Pfanstiehl Inc Health Products Common Equity (2,550 units) Investment date 3/29/20132022-12-3100015133632021-07-012021-09-300001513363Non-control/Non-affiliate Investments R1 Holdings, LLC (dba RoadOne IntermodaLogistics) Transportation services First Lien Debt ($1,596 unfunded commitment) Variable Index Spread / Floor (S + 6.25%) / (1.00%) Rate Cash/PIK 11.72%/0.00% Investment date 12/30/2022 Maturity 12/30/20282023-01-012023-12-310001513363Non-control/Non-affiliate Investments Applied Data Corporation Information Technology Services Common Equity (24 units) Investment date 11/6/20202023-12-310001513363fdus:SixPointZeroZeroZeroPercentNotesDueTwoThousandTwentyFourMember2019-02-080001513363Non-control/Non-affiliate Investments Haematologic Technologies, Inc. Healthcare Services2023-12-310001513363fdus:RaymondJamesAndAssociatesIncAndRobertWBairdAndCoMemberus-gaap:CommonStockMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments R1 Holdings, LLC (dba RoadOne IntermodaLogistics) Transportation services Common Equity (280,000 units) ($70 unfunded commitment) Investment date 12/30/20222023-12-310001513363fdus:February2024NotesMember2019-01-012019-12-310001513363Non-control/Non-affiliate Investments OnePath Systems, LLC Information Technology Services Common Equity (732,542 shares) Investment date 9/30/20222023-01-012023-12-310001513363Non-control/Non-affiliate Investments GP&C Operations, LLC (dba Garlock Printing and Converting) Component Manufacturing Common Equity (515,625 units) Investment date 1/22/20212023-01-012023-12-310001513363us-gaap:InvestmentAffiliatedIssuerControlledMember2023-12-310001513363us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberfdus:FirstLienDebtMember2023-12-310001513363Non-control/Non-affiliate Investments Virtex Enterprises, LP Industry Component Manufacturing Second Lien Debt Variable Index Spread (S + 9.75%) Variable Index Floor (1.00%) Rate Cash 14.48% Rate PIK 0.00% Investment date 4/13/2022 Maturity 10/13/20272022-12-310001513363fdus:EblLlcMemberfdus:ControlInvestmentsMember2023-12-310001513363fdus:AmeriwaterLlcMemberfdus:FirstLienDebtMemberfdus:NonControlOrNonAffiliateInvestmentsMemberfdus:ComponentManufacturingMember2022-12-310001513363Non-control/Non-affiliate Investments NGT Acquisition Holdings, LLC (dba Techniks Industries) Component Manufacturing Common Equity (378 units) Investment date 5/24/20172022-01-012022-12-310001513363Non-control/Non-affiliate Investments Hub Acquisition Sub, LLC (dba Hub Pen) Promotional products Second Lien Debt Cash 12.50% Rate PIK 1.00% Investment date 3/23/2016 Maturity 12/15/20232022-01-012022-12-310001513363Non-control/Non-affiliate Investments CIH Intermediate, LLC Business Services Preferred Equity (563 shares) Investment date 3/3/20222022-01-012022-12-310001513363Non-control/Non-affiliate Investments Prime AE Group, Inc. Business Services Preferred Equity (900,000 shares) Investment date 11/25/20192022-12-310001513363fdus:OnepathSystemsLlcMemberfdus:InformationTechnologyServicesMemberfdus:FirstLienDebtMemberfdus:NonControlOrNonAffiliateInvestmentsMember2023-12-310001513363fdus:SpecialDividendMember2023-10-300001513363fdus:November2026NotesMember2022-12-310001513363Non-control/Non-affiliate Investments Gurobi Optimization, LLC Information Technology Services Common Equity (3 shares) Investment date 12/19/20172022-12-310001513363fdus:QedTechnologiesInternationalIncMemberfdus:FirstLienDebtMemberfdus:NonControlOrNonAffiliateInvestmentsMemberfdus:ComponentManufacturingMember2023-12-310001513363Non-control/Non-affiliate Investments 301 Edison Holdings Inc. (dba LGG Industrial) Specialty Distribution First Lien Debt Rate Cash 11.75% Rate PIK 1.50% Investment date 11/14/2023 Maturity 11/13/20282023-01-012023-12-3100015133632022-09-300001513363Non-control/Non-affiliate Investments Suited Connector LLC Information Technology Services Common Equity (7,500 units) Investment date 12/01/20212022-01-012022-12-3100015133632023-06-300001513363us-gaap:AdditionalPaidInCapitalMember2023-12-310001513363us-gaap:InvestmentAffiliatedIssuerControlledMember2022-01-012022-12-310001513363fdus:InformationTechnologyServicesMemberfdus:FirstLienDebtMemberfdus:NonControlOrNonAffiliateInvestmentsMemberfdus:DealerbuiltAcquisitionLlcMember2023-12-310001513363Non-control/Non-affiliate Investments Aeronix Inc Aerospace & Defense Manufacturing First Lien Debt Variable Index Spread (L +5.88%) Variable Index Floor (0.50%) Rate Cash 10.63% Rate PIK 0.00% Investment date 6/11/2021 Maturity 6/11/20262022-12-310001513363fdus:SecuredBorrowingsMember2022-12-310001513363Non-control/Non-affiliate Investments Netbase Solutions, Inc. (dba Netbase Quid) Information Technology Services First Lien Debt Variable Index Spread (P+4.00%) Variable Index Floor (3.25%) Rate Cash 12.50% Rate PIK 0.00% Investment date 11/18/2021 Maturity 11/18/20252023-01-012023-12-310001513363fdus:EblLlcMemberus-gaap:CarryingReportedAmountFairValueDisclosureMember2022-12-310001513363Non-control/Non-affiliate Investments Acendre Midco Inc Information Technology Services Common Equity (500,000 shares) Investment date 10/6/20212022-01-012022-12-310001513363fdus:AbilityToEnterIntoAndExitInvestmentTransactionsWithAffiliatesWillBeRestrictedMember2023-01-012023-12-310001513363fdus:BedfordPrecisionPartsLLCMemberfdus:FirstLienDebtMemberfdus:NonControlOrNonAffiliateInvestmentsMemberfdus:SpecialtyDistributionMember2022-12-310001513363Control Investments US GreenFiber LLC Building Products Manufacturing Common Equity (425,508 units) Investment Date 8/30/20192023-12-310001513363fdus:FivePointEightSixOnePercentInterestRateMember2023-12-310001513363Non-control/Non-affiliate Investments Choice Technology Solutions, LLC (dba Choice Merchant Solutions, LLC) Information Technology Services First Lien Debt Variable Index Spread (S +7.25%) Variable Index Floor (1.00%) Rate Cash 12.89% Rate PIK 0.00% Investment date 4/1/2022 Maturity 4/1/20272023-01-012023-12-310001513363fdus:InformationTechnologyServicesMemberfdus:FirstLienDebtMemberfdus:IproTechLlcMemberfdus:NonControlOrNonAffiliateInvestmentsMember2022-12-310001513363fdus:AffiliateInvestmentsMemberfdus:PinnergyLtdMember2022-01-012022-12-310001513363us-gaap:LineOfCreditMember2018-01-012018-12-310001513363Non-control/Non-affiliate Investments United Biologics, LLC. Industry Healthcare Services Preferred Equity (98,377 units) Investment date 4/1/20122023-01-012023-12-310001513363Non-control/Non-affiliate Investments Tedia Company, LLC. Healthcare Products Subordinated Debt Rate Cash 7.25% Rate PIK 7.25% Investment date 3/4/2022 Maturity 9/4/20272023-01-012023-12-310001513363fdus:AffiliateInvestmentsMemberfdus:ApplegateGreenfiberIntermediateIncMember2022-01-012022-12-310001513363fdus:ChangesToUSTariffAndImportExportRegulationsMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments CIH Intermediate, LLC Business Services Common Equity (563 shares) Investment date 3/3/20222023-01-012023-12-3100015133632020-12-310001513363fdus:ControlInvestmentsMemberfdus:MesaLineServicesLlcMember2022-01-012022-12-3100015133632015-01-012015-12-310001513363us-gaap:SubordinatedDebtMember2023-01-012023-12-310001513363fdus:DividendReinvestmentPlanMember2022-04-012022-06-300001513363Non-control/Non-affiliate Investments ISI PSG Holdings, LLC (dba Incentive Solutions, Inc.) Business Services Common Equity (256,964 units) Investment date 4/5/20212023-12-310001513363fdus:DividendReinvestmentPlanMember2021-04-012021-06-3000015133632022-05-020001513363Non-control/Non-affiliate Investments GMP HVAC, LLC (dba McGee Heating & Air, LLC) Utilities: Services2023-12-310001513363Non-control/Non-affiliate Investments2023-12-310001513363Non-control/Non-affiliate Investments Auto CRM LLC (dba Dealer Holdings) Information Technology Services Subordinated Debt Rate Cash 0.00% Rate PIK 12.75% Investment date 10/1/2021 Maturity 12/31/20262022-01-012022-12-310001513363Non-control/Non-affiliate Investments Puget Collision, LLC Retail First Lien Debt Variable Index Spread (S + 8.50%) Variable Index Floor (1.00%) Rate Cash 13.84% Rate PIK 0.00% Investment date 4/28/2023 Maturity 9/12/20272023-01-012023-12-310001513363Non-control/Non-affiliate Investments BCM One Group Holdings, Inc. Information Technology Services Subordinated Debt Rate Cash 10.25% Rate PIK 00.00% Investment date 11/17/2021 Maturity 11/17/20282022-12-3100015133632011-06-012023-12-310001513363Non-control/Non-affiliate Investments LifeSpan Biosciences, Inc. Healthcare Products Subordinated Debt Rate Cash 11.50% Rate PIK 0.00% Investment date 3/19/2021 Maturity 9/19/20262023-12-310001513363Non-control/Non-affiliate Investments Pinnergy, Ltd. Oil & Gas Services Subordinated Rate Cash 9.00% Rate PIK 0.00% Investment date 6/30/2022 Maturity 6/30/20272023-12-310001513363Non-control/Non-affiliate Investments Prime AE Group, Inc. Business Services First Lien Debt Variable Index Spread / Floor (S + 6.75%) / (2.00%) Rate Cash/PIK 11.59%/0.00% Investment date 11/25/2019 Maturity 11/25/20242022-01-012022-12-310001513363Non-control/Non-affiliate Investments Power Grid Components, Inc. Specialty Distribution Common Equity (10,622 shares) Investment date 4/12/20182022-01-012022-12-310001513363Non-control/Non-affiliate Investments Allredi LLC (fka Macro Group International OpCo. LLC) Industrial Cleaning & Coatings Second Lien Debt Rate Cash 12.50% Rate PIK 2.25% Investment date 3/2/2020 Maturity 9/2/20262022-01-012022-12-310001513363us-gaap:MoneyMarketFundsMember2022-12-310001513363fdus:UnitedStatesWestMember2022-12-310001513363fdus:DividendReinvestmentPlanMember2022-01-012022-12-310001513363Non-control/Non-affiliate Investments Allredi LLC (fka Macro Group International OpCo. LLC) Industrial Cleaning & Coatings Common Equity (39,443 units) Investment date 11/24/20212023-12-310001513363Non-control/Non-affiliate Investments Worldwide Express Operations, LLC Transportation services Common Equity (752,380units) Investment date 7/26/20212022-01-012022-12-310001513363fdus:AffiliateInvestmentsMember2023-01-012023-12-310001513363fdus:SupplementalDividendMember2023-05-020001513363us-gaap:CommonStockMember2022-12-310001513363fdus:November2026NotesMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments Hub Acquisition Sub, LLC (dba Hub Pen) Promotional products Second Lien Debt Cash 12.50% Rate PIK 1.00% Investment date 3/23/2016 Maturity 12/15/20232022-12-310001513363Non-control/Non-affiliate Investments American AllWaste LLC (dba WasteWater Transport Services) Environmental Industries Preferred Equity (500 units) Investment Date 5/31/20182022-12-310001513363Non-control/Non-affiliate Investments Pool & Electrical Products, LLC Oil & Gas Services Common Equity (18,298 units) Investment date 10/28/20202023-01-012023-12-310001513363Non-control/Non-affiliate Investments Pinnergy, Ltd. Oil & Gas Services Subordinated Debt Rate Cash 9.00% Rate PIK 0.00% Investment date 6/30/2022 Maturity 6/30/20272022-01-012022-12-310001513363fdus:SmallBusinessAdministrationDebenturesMemberfdus:FivePointNineNineOnePercentInterestRateMember2023-12-310001513363us-gaap:InvestmentAffiliatedIssuerMember2022-01-012022-12-310001513363fdus:SmallBusinessAdministrationDebenturesMember2021-12-310001513363fdus:SmallBusinessAdministrationDebenturesMember2023-12-310001513363Affiliate Investments Applegate Greenfiber Intermediate Inc ( fka US GreenFiber LLC) Building Products Manufacturing Subordinated Debt Rate Cash 10.00% Rate PIK 0.00% Investment date 12/31/2021 Maturity 12/31/20272022-12-310001513363Non-control/Non-affiliate Investments Hallmark Health Care Solutions, Inc. Healthcare Services Common Equity (750,000 units) Investment date 12/4/20202022-12-310001513363fdus:FivePointEightSixOnePercentInterestRateOneMember2023-12-310001513363fdus:January2026NotesMember2021-01-012021-12-310001513363Affiliate Investments Applegate Greenfiber Intermediate Inc ( fka US GreenFiber LLC) Building Products Manufacturing Common Equity (2,012 units) Investment date 12/31/20212022-12-310001513363Non-control/Non-affiliate Investments Dataguise, Inc. Information Technology Services Common Equity Investment date 12/31/20202022-01-012022-12-310001513363fdus:ThreePointTwoSixSevenPercentInterestRateMember2022-12-3100015133632021-04-012021-06-300001513363us-gaap:InvestmentAffiliatedIssuerMember2022-12-310001513363Non-control/Non-affiliate Investments K2 Merger Agreement Agent, LLC (fka K2 Industrial Services, Inc.) (n) Industrial Cleaning & Coatings Second Lien Debt Cash 0.00% Rate PIK 10.00% Investment date 1/28/2019 Maturity 1/28/20252022-01-012022-12-310001513363us-gaap:SubordinatedDebtMember2023-12-310001513363Affiliate Investments Applegate Greenfiber Intermediate Inc ( fka US GreenFiber LLC) Building Products Manufacturing Common Equity (7,113 units) Investment date 12/31/20212022-12-310001513363fdus:AldingerCompanyMemberfdus:FirstLienDebtMemberfdus:BusinessServicesMemberfdus:NonControlOrNonAffiliateInvestmentsMember2023-12-310001513363fdus:FivePointEightSevenFiveNotesDueMember2018-02-220001513363fdus:TwoThousandTwentyFourNotesMember2021-01-012021-12-310001513363fdus:FivePointThreeFourOnePercentInterestRateThreeMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments Fishbowl Solutions, LLC Information Technology Services First Lien Debt Variable Index Spread (S +7.75%) Variable Index Floor (1.00%) Rate Cash 12.57% Rate PIK 0.00% Investment date 3/25/2022 Maturity 3/25/20272022-12-310001513363Control Investments EBL LLC (EbLens) Retail Common Equity (75,000 units) Investment Date 7/13/20172022-12-310001513363us-gaap:EstimateOfFairValueFairValueDisclosureMember2022-12-310001513363Non-control/Non-affiliate Investments APM Intermediate Holdings, LLC (dba Artistic Paver Manufacturing, Inc.) Building Products Manufacturing Common Equity (1,200 units) Investment date 11/8/20222023-01-012023-12-310001513363us-gaap:InvestmentAffiliatedIssuerMember2021-01-012021-12-310001513363Non-control/Non-affiliate Investments The Kyjen Company, LLC (dba Outward Hound) Consumer Products Common Equity (855 shares) Investment date 12/8/20172022-12-310001513363Non-control/Non-affiliate Investments AmeriWater LLC Component Manufacturing First Lien Debt Variable Index Spread (S + 6.25%) Variable Index Floor (1.00%) Rate Cash 11.60% Rate PIK 0.00% Investment date 7/8/2022 Maturity 7/8/20272023-01-012023-12-310001513363fdus:SmallBusinessAdministrationDebenturesMemberus-gaap:SubsequentEventMember2024-02-280001513363Non-control/Non-affiliate Investments Cardboard Box LLC (dba Anthonys Coal Fired Pizza) Restaurants Preferred Equity (9,787 units) Investment date 11/3/20222022-12-310001513363fdus:SixPointZeroZeroNinePercentInterestRateMemberfdus:SmallBusinessAdministrationDebenturesMember2023-12-310001513363Non-control/Non-affiliate Investments ISI PSG Holdings, LLC (dba Incentive Solutions, Inc.) Business Services Common Equity (256,964 units) Investment date 4/5/20212022-12-310001513363country:CA2022-12-310001513363fdus:SixPointZeroZeroZeroPercentNotesDueTwoThousandTwentyFourMember2021-11-022021-11-020001513363fdus:SmallBusinessAdministrationDebenturesMember2018-01-012018-12-310001513363Non-control/Non-affiliate Investments Dealerbuilt Acquisition, LLC Information Technology Services Common Equity (1,000 Units) Investment date 7/21/20232023-01-012023-12-310001513363Non-control/Non-affiliate Investments Acendre Midco Inc Information Technology Services Common Equity (500,000 shares) Investment date 10/6/20212022-12-310001513363us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberfdus:FirstLienDebtMember2023-01-012023-12-310001513363fdus:CurrentMarketConditionsMember2023-01-012023-12-310001513363fdus:SpecialDividendMember2021-11-010001513363us-gaap:MeasurementInputEbitdaMultipleMemberfdus:ValuationTechniqueEnterpriseValueMemberus-gaap:FairValueInputsLevel3Membersrt:MinimumMember2023-12-310001513363Non-control/Non-affiliate Investments Healthfuse, LLC Healthcare Services Preferred Equity (197,980 units) Investment date 11/13/20202023-12-310001513363fdus:SupplementalDividendMember2021-02-090001513363Non-control/Non-affiliate Investments Dealerbuilt Acquisition, LLC Information Technology Services Preferred Equity (1,000 Units) Investment date 7/21/20232023-01-012023-12-310001513363fdus:AerospaceAndDefenseManufacturingMemberfdus:AeronixIncMemberfdus:FirstLienDebtMemberfdus:NonControlOrNonAffiliateInvestmentsMember2022-12-310001513363Control Investments US GreenFiber LLC Building Products Manufacturing Common Equity (425,508 units) Investment Date 8/30/20192022-12-310001513363fdus:EquityInvestmentMember2023-12-310001513363fdus:ValuationTechniqueEnterpriseValueMemberus-gaap:FairValueInputsLevel3Memberus-gaap:MeasurementInputRevenueMultipleMembersrt:WeightedAverageMember2023-12-310001513363Non-control/Non-affiliate Investments IBH Holdings, LLC (fka Inflexxion, Inc.) Business Services Common Equity (150,000 units) Investment date 6/20/20182023-12-310001513363Non-control/Non-affiliate Investments Bad Boy Mowers JV Acquisition, LLC Consumer Products Subordinated Debt Rate Cash 9.00% Rate PIK 4.50% Investment date 11/9/2023 Maturity 11/9/20302023-01-012023-12-310001513363Non-control/Non-affiliate Investments Elements Brands, LLC Consumer Products Revolving Loan Cash 12.25% Rate PIK 0.00% Investment date 12/31/2020 Maturity 6/30/20242023-01-012023-12-310001513363Non-control/Non-affiliate Investments Aldinger Company Business Services First Lien Debt Variable Index Spread (S +6.50%) Variable Index Floor (2.00%) Rate Cash 11.89% Rate PIK 0.00% Investment date 6/30/2023 Maturity 6/29/20292023-01-012023-12-310001513363Non-control/Non-affiliate Investments IBH Holdings, LLC (fka Inflexxion, Inc.) Business Services Common Equity (150,000 units) Investment date 6/20/20182023-01-012023-12-310001513363Non-control/Non-affiliate Investments APM Intermediate Holdings, LLC (dba Artistic Paver Manufacturing, Inc.) Building Products Manufacturing2023-12-310001513363Non-control/Non-affiliate Investments American AllWaste LLC (dba WasteWater Transport Services) Environmental Industries Preferred Equity (207 units) Investment Date 8/6/20192022-01-012022-12-310001513363Non-control/Non-affiliate Investments Dataguise, Inc. Information Technology Services Common Equity Investment date 12/31/20202022-12-310001513363Non-control/Non-affiliate Investments Prime Quest Software US Holdings Inc. Information Technology Services Second Lien Debt Variable Index Spread (S +7.50%) Variable Index Floor (0.50%) Rate Cash 11.79% Rate PIK 0.00% Investment date 3/1/2022 Maturity 2/1/20302022-12-310001513363Non-control/Non-affiliate Investments Zonkd, LLC Industry Component Manufacturing First Lien Debt Variable Index Spread (S + 10.00%) Variable Index Floor (1.00%) Rate Cash 16.63% Rate PIK 0.00% Investment date 3/18/2022 Maturity 3/18/20272023-12-3100015133632020-01-012020-12-310001513363us-gaap:CommonStockMember2020-12-310001513363Non-control/Non-affiliate Investments Combined Systems, Inc. Aerospace & Defense Manufacturing First Lien Debt Variable Index Spread Rate Variable Index Spread Variable Index Spread (L +11.00%) Variable Index Floor (2.00%) Cash 18.75% Rate PIK 0.00% Investment date 12/22/2022 Maturity 2/15/20232022-01-012022-12-3100015133632021-02-092021-02-090001513363Non-control/Non-affiliate Investments Green Cubes Technology, LLC (dba Green Cubes) Information Technology Services First Lien Debt Variable Index Spread (L +13.00%) Variable Index Floor (0.00%) Rate Cash 17.77% Rate PIK 0.00% Investment date 12/17/2021 Maturity 12/17/20242022-12-310001513363us-gaap:LineOfCreditMember2021-01-012021-12-310001513363fdus:InvestmentAdvisoryAgreementMember2023-01-012023-12-310001513363fdus:TwoPointOneSevenTwoPercentInterestRateMember2023-12-310001513363Control Investments US GreenFiber LLC Building Products Manufacturing Common Equity (2,522 units) Investment Date 7/3/20142022-12-310001513363Non-control/Non-affiliate Investments Detechtion Holdings, LLC Information Technology Services Subordinated Debt Rate Cash 0.00% Rate PIK 14.00% Investment date 6/21/2023 Maturity 6/21/20282023-12-310001513363fdus:CombinedSystemsIncRevolvingLoanMember2022-12-3100015133632023-02-152023-02-150001513363fdus:RestaurantsMemberfdus:CommonAndPreferredEquityUnitsMemberfdus:NonControlOrNonAffiliateInvestmentsMemberfdus:CardboardBoxLlcDbaAnthonysCoalFiredPizzaMember2022-12-310001513363Affiliate Investments Steward Holding LLC (dba Steward Advanced Materials) Aerospace & Defense Manufacturing Common Equity (1,000,000 units) Investment Date 11/12/20152022-01-012022-12-310001513363Non-control/Non-affiliate Investments Haematologic Technologies, Inc. Healthcare Services Common Equity 89 units) Investment date 6/26/20232023-01-012023-12-310001513363Non-control/Non-affiliate Investments Allredi LLC(fka Macro Group International OpCo. LLC) Industrial Cleaning & Coatings Common Equity (39,443 units) Investment date 11/24/20212022-01-012022-12-310001513363fdus:FourPointSevenFivePercentNotesDueTwoThousandTwentySixMember2020-12-230001513363fdus:EblLlcEblensCommonEquityUnitsMember2022-12-310001513363Non-control/Non-affiliate Investments Auto CRM LLC (dba Dealer Holdings) Information Technology Services Subordinated Debt Rate Cash 0.00% Rate PIK 14.50% Investment date 10/1/2021 Maturity 12/31/20262023-12-310001513363us-gaap:RevolvingCreditFacilityMembersrt:MaximumMemberfdus:IngCapitalLimitedLiabilityCompanyMemberfdus:SeniorSecuredRevolvingCreditAgreementMember2019-04-242019-04-240001513363fdus:AerospaceAndDefenseManufacturingMemberfdus:FirstLienDebtMemberfdus:NonControlOrNonAffiliateInvestmentsMemberfdus:SpectraAAndDAcquisitionIncMember2022-12-310001513363Non-control/Non-affiliate Investments American AllWaste LLC (dba WasteWater Transport Services) Environmental Industries Preferred Equity (141 units) Investment Date 11/2/20202022-12-310001513363Non-control/Non-affiliate Investments R1 Holdings, LLC (dba RoadOne IntermodaLogistics) Subordinated Debt ($417 unfunded commitment) Industry Transportation services Rate Cash/PIK 8.75%/5.00% Investment date 12/30/2022 Maturity 6/30/20292022-12-310001513363fdus:PfanstiehlIncMember2022-01-012022-12-310001513363Non-control/Non-affiliate Investments Elements Brands, LLC Consumer Products First Lien Debt Cash 12.25% Rate PIK 0.00% Investment date 12/31/2020 Maturity 6/30/20242023-12-310001513363Non-control/Non-affiliate Investments Acendre Midco Inc Information Technology Services2022-12-310001513363Non-control/Non-affiliate Investments Hub Acquisition Sub, LLC (dba Hub Pen) Promotional products Preferred Equity (868 units) Investment date 10/16/20202023-12-310001513363Affiliate Investments Applegate Greenfiber Intermediate Inc ( fka US GreenFiber LLC) Building Products Manufacturing Common Equity (5,690 units) Investment date 12/31/20212022-12-310001513363Non-control/Non-affiliate Investments Westerns Smokehouse, LLC2022-12-310001513363Non-control/Non-affiliate Investments MDME Holding Corp. Healthcare Products Common Equity (4,735 units) Investment date 9/18/20232023-12-310001513363Non-control/Non-affiliate Investments Aeronix Inc Aerospace & Defense Manufacturing Common Equity (549 units) Investment Date 6/11/20212022-01-012022-12-310001513363fdus:SmallBusinessAdministrationDebenturesMember2022-01-012022-12-310001513363us-gaap:LineOfCreditMember2020-12-310001513363Non-control/Non-affiliate Investments CTM Group, Inc. Business Services Subordinated Debt Rate Cash 11.50% Rate PIK 2.00% Investment date 2/28/2023 Maturity 11/30/20272023-12-310001513363Non-control/Non-affiliate Investments Choice Technology Solutions, LLC (dba Choice Merchant Solutions, LLC) Information Technology Services First Lien Debt Variable Index Spread (S +7.25%) Variable Index Floor (1.00%) Rate Cash 12.89% Rate PIK 0.00% Investment date 4/1/2022 Maturity 4/1/20272023-12-310001513363Affiliate Investments Applegate Greenfiber Intermediate Inc ( fka US GreenFiber LLC) Building Products Manufacturing Common Equity (7,113 units) Investment date 12/31/20212023-12-310001513363Non-control/Non-affiliate Investments Ameriwater LLC Component Manufacturing Common Equity (1,000 units) Investment date 7/8/20222022-01-012022-12-310001513363Non-control/Non-affiliate Investments CIH Intermediate, LLC Business Services First Lien Debt Variable Index Spread Rate Cash 10.00% Rate PIK 1.00% Investment date 3/3/2022 Maturity 3/3/20282023-01-012023-12-310001513363fdus:ValuationTechniqueEnterpriseValueMemberus-gaap:FairValueInputsLevel3Memberfdus:MeasurementInputAssetCoverageMemberfdus:FirstLienDebtMembersrt:MinimumMember2023-12-310001513363fdus:FirstLienDebtMember2022-01-012022-12-310001513363Non-control/Non-affiliate Investments Applied Data Corporation Information Technology Services2023-12-310001513363Non-control/Non-affiliate Investments PowerGrid Services Acquisition, LLC Utilities: Services Second Lien Debt Variable Index Spread (S +9.50%) Variable Index Floor (1.00%)Cash 14.23% Rate PIK 0.00% Investment date 9/21/2021 Maturity 3/21/20292022-01-012022-12-310001513363Non-control/Non-affiliate Investments OnePath Systems, LLC Information Technology Services First Lien Debt Variable Index Spread (S+7.50%) Variable Index Floor (1.00%) Rate Cash 12.83% Rate PIK 0.00% Investment date 9/30/2022 Maturity 9/30/20272023-12-310001513363Non-control/Non-affiliate Investments Tedia Company, LLC. Healthcare Products Subordinated Debt Rate Cash 7.25% Rate PIK 7.25% Investment date 3/4/2022 Maturity 9/4/20272023-12-310001513363us-gaap:RevolvingCreditFacilityMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments Pinnergy, Ltd. Oil & Gas Services Subordinated Debt Rate Cash 9.00% Rate PIK 0.00% Investment date 6/30/2022 Maturity 6/30/20272022-12-310001513363fdus:November2024NotesMember2019-12-310001513363us-gaap:MeasurementInputEbitdaMultipleMemberfdus:ValuationTechniqueEnterpriseValueMemberus-gaap:FairValueInputsLevel3Memberus-gaap:SubordinatedDebtMembersrt:WeightedAverageMember2022-12-310001513363Non-control/Non-affiliate Investments Green Cubes Technology, LLC (dba Green Cubes) Information Technology Services First Lien Debt Variable Index Spread (S +13.00%) Variable Index Floor (0.00%) Rate Cash 18.53% Rate PIK 0.00% Investment date 12/17/2021 Maturity 12/17/20242023-01-012023-12-310001513363Non-control/Non-affiliate Investments ISI PSG Holdings, LLC (dba Incentive Solutions, Inc.) Business Services Common Equity (256,964 units) Investment date 4/5/20212022-01-012022-12-310001513363Non-control/Non-affiliate Investments R1 Holdings, LLC (dba RoadOne IntermodaLogistics) Transportation services Common Equity (280,000 units) ($70 unfunded commitment) Investment date 12/30/20222023-01-012023-12-310001513363Non-control/Non-affiliate Investments Tedia Company, LLC Healthcare Products Revolving Loan ($2,400 unfunded commitment) Variable Index Spread (S +7.75%) Variable Index Floor (1.00%) Rate Cash 11.57% Rate PIK 0.00% Investment date 03/04/2022 Maturity 03/04/20272022-01-012022-12-310001513363Non-control/Non-affiliate Investments CRS Solutions Holdings, LLC (dba CRS Texas) Business Services Common Equity Investment date 6/28/20222022-01-012022-12-310001513363Non-control/Non-affiliate Investments Zonkd, LLC Industry Component Manufacturing2023-12-310001513363Non-control/Non-affiliate Investments BP Thrift Buyer, LLC (dba myUnique and Ecothrift) Retail First Lien Debt Variable Index Spread Variable Index Spread (S +5.75%) Variable Index Floor (1.50%) Rate Cash 9.31% Rate PIK 0.00% Investment date 9/13/2022 Maturity 9/13/20272022-12-310001513363fdus:ControlInvestmentsMember2023-12-310001513363fdus:AffiliateInvestmentsMemberfdus:ApplegateGreenfiberIntermediateIncMember2021-12-310001513363fdus:ThreePointTwoFourNinePercentInterestRateMember2023-12-310001513363Non-control/Non-affiliate Investments Haematologic Technologies, Inc. Healthcare Services First Lien Debt Variable Index Spread (S +8.25%) Variable Index Floor (2.00%) Rate Cash 13.85% Rate PIK 0.00% Investment date 10/11/2019 Maturity 10/11/20242023-01-012023-12-310001513363fdus:FourPointSevenFivePercentNotesDueTwoThousandTwentySixMember2023-12-310001513363fdus:FivePointThreeFourOnePercentInterestRateTwoMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments Diversified Search LLC Business Services Common Equity (573 units) Investment date 2/7/20192023-12-310001513363us-gaap:WarrantMember2023-01-012023-12-310001513363fdus:LevelEducationGroupLlcMemberfdus:FirstLienDebtMemberfdus:BusinessServicesMemberfdus:NonControlOrNonAffiliateInvestmentsMember2023-12-310001513363Non-control/Non-affiliate Investments Choice Technology Solutions, LLC (dba Choice Merchant Solutions, LLC) Information Technology Services2022-12-310001513363Non-control/Non-affiliate Investments Wonderware Holdings, LLC (dba CORE Business Technologies) Industry Information Technology Services First Lien Debt Variable Index Spread (S + 7.00%) Variable Index Floor (1.00%) Rate Cash 12.59% Rate PIK 0.00% Investment date 2/10/2021 Maturity 2/9/20262023-12-310001513363fdus:ControlInvestmentsMember2022-01-012022-12-310001513363Non-control/Non-affiliate Investments QED Technologies International, Inc. Component Manufacturing Common Equity (140 shares) Investment date 2/28/20232023-01-012023-12-310001513363fdus:NotesMember2019-12-310001513363Non-control/Non-affiliate Investments Acendre Midco Inc Information Technology Services First Lien Debt Variable Index Spread (S +7.75%) Variable Index Floor (0.50%) Rate Cash 12.30% Rate PIK 0.00% Investment date 10/6/2021 Maturity 10/6/2026 One2022-12-310001513363fdus:ChangesInHealthcareLawsAndOtherRegulationsApplicableToPortfolioCompaniesMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments Suited Connector LLC Information Technology Services Common Equity (56,382 units) Investment date 12/1/20212023-12-310001513363fdus:UnitedStatesWestMember2023-01-012023-12-310001513363fdus:SmallBusinessAdministrationDebenturesMemberfdus:SixPointZeroEightThreePercentInterestRateMember2023-12-310001513363Non-control/Non-affiliate Investments White Label Communication, LLC Industry Information Technology Services First Lien Debt Variable Index Spread (S + 6.25%) Variable Index Floor (1.00%) Rate Cash 11.66% Rate PIK 0.00% Investment date 10/11/2023 Maturity 10/11/20292023-12-310001513363fdus:ThreePointOneNineZeroPercentInterestRateMember2023-01-012023-12-310001513363fdus:ResignationOfInvestmentAdvisorMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments American AllWaste LLC (dba WasteWater Transport Services) Environmental Industries Preferred Equity (500 units) Investment Date 5/31/20182023-12-310001513363Non-control/Non-affiliate Investments Zonkd, LLC Industry Component Manufacturing First Lien Debt Variable Index Spread (L + 10.00%) Variable Index Floor (1.00%) Rate Cash 15.76% Rate PIK 0.00% Investment date 3/18/2022 Maturity 3/18/20272022-12-310001513363Non-control/Non-affiliate Investments Diversified Search LLC Business Services First Lien Debt Variable Index Spread Variable Index Spread (S +6.50%) Variable Index Floor (1.00%) Cash 10.32% Rate PIK 0.00% Investment date 2/7/2019 Maturity 2/7/20242022-01-012022-12-310001513363fdus:AffiliateInvestmentsMemberfdus:PfanstiehlIncMember2023-12-310001513363fdus:ProvisionsOfMarylandGeneralCorporationLawMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments United Biologics, LLC. Industry Healthcare Services Preferred Equity (98,377 units) Investment date 4/1/20122022-01-012022-12-310001513363Non-control/Non-affiliate Investments Bedford Precision Parts LLC Specialty Distribution Common Equity (500,000 units) Investment date 3/12/20192022-01-012022-12-310001513363Control Investments EBL LLC (EbLens) Retail Second Lien Debt Rate Cash 0.00% Rate PIK 13.00% Investment date 10/3/2022 Maturity 10/3/20252022-01-012022-12-310001513363fdus:February2024NotesMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments Bedford Precision Parts LLC Specialty Distribution Common Equity (500,000 units) Investment date 3/12/20192023-12-310001513363Non-control/Non-affiliate Investments Palmetto Moon, LLC Retail Common Equity (499 units) Investment date 11/3/20162023-12-310001513363Control Investments US GreenFiber LLC Building Products Manufacturing2023-12-310001513363Non-control/Non-affiliate Investments Cardback Intermediate, LLC (dba Chargeback Gurus) Information Technology Services Common Equity (495 shares) Investment date 8/10/20212022-01-012022-12-310001513363us-gaap:EquitySecuritiesMember2023-12-310001513363Non-control/Non-affiliate Investments Cardback Intermediate, LLC (dba Chargeback Gurus) Information Technology Services Common Equity (495 shares) Investment date 8/10/20212022-12-310001513363srt:MaximumMemberfdus:ValuationTechniqueEnterpriseValueMemberus-gaap:FairValueInputsLevel3Memberfdus:MeasurementInputAssetCoverageMemberfdus:FirstLienDebtMember2022-12-310001513363fdus:SmallBusinessAdministrationDebenturesMember2021-01-012021-12-310001513363fdus:MinimumDistributionRequirementToMaintainStatusAsRicMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments American AllWaste LLC (dba WasteWater Transport Services) Environmental Industries Preferred Equity (74 units) Investment Date 12/29/20212022-01-012022-12-310001513363Non-control/Non-affiliate Investments Prime Quest Software US Holdings Inc. Information Technology Services Second Lien Debt Variable Index Spread (S +7.50%) Variable Index Floor (0.50%) Rate Cash 11.79% Rate PIK 0.00% Investment date 3/1/2022 Maturity 2/1/20302022-01-012022-12-310001513363Non-control/Non-affiliate Investments Rhino Assembly Company, LLC Specialty Distribution Common Equity (Class A Units) (10,915 units) Investment date 08/11/20172022-12-310001513363fdus:UsGreenfiberLlcMemberus-gaap:CarryingReportedAmountFairValueDisclosureMember2023-12-310001513363Non-control/Non-affiliate Investments United Biologics, LLC. Industry Healthcare Services Warrant (57,469 units) Investment date 3/5/20122023-12-310001513363fdus:SupplementalDividendMember2023-05-022023-05-020001513363Non-control/Non-affiliate Investments Hallmark Health Care Solutions, Inc. Healthcare Services First Lien Debt Variable Index Spread (L +7.25%) Variable Index Floor (1.50%) Rate Cash 10.99% Rate PIK 0.00% Investment date 12/4/2020 Maturity 12/4/20252022-01-012022-12-310001513363Non-control/Non-affiliate Investments ISI PSG Holdings, LLC (dba Incentive Solutions, Inc.) Business Services First Lien Debt Variable Index Spread (S+7.50%) Variable Index Floor (0.50%) Rate Cash 13.00% Rate PIK 0.00% Investment date 4/5/2021 Maturity 4/5/20262023-12-310001513363fdus:AerospaceAndDefenseManufacturingMemberfdus:FirstLienDebtMemberfdus:NonControlOrNonAffiliateInvestmentsMemberfdus:SpectraAAndDAcquisitionIncMember2023-12-310001513363Non-control/Non-affiliate Investments AOM Intermediate Holdco, LLC (dbaAllOver Media) Information Technology Services Common Equity Investment date 2/1/20222022-01-012022-12-310001513363Non-control/Non-affiliate Investments Micronics Filtration Holdings, Inc. (dba Micronics Engineered Filtration Group, Inc.) Component Manufacturing2023-12-3100015133632021-09-300001513363us-gaap:SeniorNotesMember2023-01-012023-12-310001513363srt:MaximumMemberfdus:ValuationTechniqueEnterpriseValueMemberus-gaap:FairValueInputsLevel3Memberus-gaap:MeasurementInputRevenueMultipleMember2022-12-310001513363us-gaap:FairValueInputsLevel3Memberfdus:FirstLienDebtMemberus-gaap:FairValueMeasurementsRecurringMember2022-12-310001513363fdus:DistributionsMember2023-01-012023-12-310001513363fdus:AffiliateInvestmentsMember2022-01-012022-12-310001513363fdus:NetbaseSolutionsIncDbaNetbaseQuidFirstLienDebtLastOutMember2022-12-310001513363Non-control/Non-affiliate Investments American AllWaste LLC (dba WasteWater Transport Services) Environmental Industries Preferred Equity (500 units) Investment Date 5/31/20182022-01-012022-12-310001513363Control Investments US GreenFiber LLC Building Products Manufacturing Common Equity (2,522 units) Investment Date 7/3/20142023-01-012023-12-310001513363Non-control/Non-affiliate Investments GMP HVAC, LLC (dba McGee Heating & Air, LLC) Utilities: Services Revolving Loan ($1,000 unfunded commitment) Variable Index Spread (S +7.00%) Variable Index Floor (2.00%) Rate Cash 12.38% Rate PIK 0.00% Investment date 12/8/2023 Maturity 12/8/20282023-12-310001513363fdus:DividendTwoMember2022-08-012022-08-010001513363Non-control/Non-affiliate Investments Level Education Group, LLC (dba CE4Less) Business Services Common Equity (1,000,000 units) Investment date 4/1/20212022-01-012022-12-310001513363fdus:UnitedStatesSouthwestMember2022-12-310001513363Non-control/Non-affiliate Investments Allredi LLC(fka Macro Group International OpCo. LLC) Industrial Cleaning & Coatings Common Equity (39,443 units) Investment date 11/24/20212022-12-310001513363Non-control/Non-affiliate Investments Choice Technology Solutions, LLC (dba Choice Merchant Solutions, LLC) Information Technology Services Revolving Loan ($1,000 unfunded commitment) Variable Index Spread (S +6.25%) Variable Index Floor (1.00%) Rate Cash 11.89% Rate PIK 0.00% Investment date 4/1/2022 Maturity 4/1/20272023-12-310001513363fdus:November2024NotesMember2019-10-162019-10-160001513363fdus:SubjectToSecuritiesLitigationOrShareholderActivismCauseToIncurSignificantExpenseHinderExecutionOfInvestmentStrategyAndImpactOurStockPriceMember2023-01-012023-12-3100015133632022-01-012022-03-310001513363fdus:EblLlcMemberfdus:ControlInvestmentsMember2022-01-012022-12-310001513363fdus:AffiliateInvestmentsMemberfdus:ApplegateGreenfiberIntermediateIncMember2023-12-310001513363Non-control/Non-affiliate Investments CTM Group, Inc. Business Services Common Equity (400,000 units) Investment date 2/28/20232023-12-310001513363fdus:RaymondJamesAndAssociatesIncAndRobertWBairdAndCoMemberus-gaap:CommonStockMember2023-04-012023-06-300001513363Non-control/Non-affiliate Investments Rhino Assembly Company, LLC Specialty Distribution2022-12-310001513363Non-control/Non-affiliate Investments Choice Technology Solutions, LLC (dba Choice Merchant Solutions, LLC) Information Technology Services Preferred Equity (500,000 units) Investment date 8/21/20232023-01-012023-12-310001513363fdus:EconomicRecessionsOrDownturnsMember2023-01-012023-12-310001513363fdus:SixPointZeroZeroZeroPercentNotesDueTwoThousandTwentyFourMember2019-02-192019-02-190001513363Affiliate Investments Applegate Greenfiber Intermediate Inc ( fka US GreenFiber LLC) Building Products Manufacturing Common Equity (2,012 units) Investment date 12/31/20212023-01-012023-12-310001513363Non-control/Non-affiliate Investments QED Technologies International, Inc. Component Manufacturing Common Equity (140 shares) Investment date 2/28/20232023-12-310001513363us-gaap:ValuationTechniqueDiscountedCashFlowMembersrt:MaximumMemberus-gaap:FairValueInputsLevel3Memberfdus:FirstLienDebtMemberfdus:MeasurementInputWeightedAverageCostOfCapitalMember2023-12-310001513363fdus:AffiliateInvestmentsMemberfdus:PinnergyLtdMember2021-12-310001513363Non-control/Non-affiliate Investments Combined Systems, Inc. Aerospace & Defense Manufacturing First Lien Debt Variable Index Spread Rate Variable Index Spread Variable Index Spread (L +11.00%) Variable Index Floor (2.00%) Cash 17.74% Rate PIK 0.00% Investment date 1/31/2020 Maturity 1/31/20252022-01-012022-12-310001513363us-gaap:FairValueInputsLevel3Member2023-01-012023-12-310001513363fdus:WonderwareHoldingsLlcDbaCoreBusinessTechnologiesMemberfdus:InformationTechnologyServicesMemberfdus:FirstLienDebtMemberfdus:NonControlOrNonAffiliateInvestmentsMember2022-12-310001513363Non-control/Non-affiliate Investments PowerGrid Services Acquisition, LLC Utilities: Services Common Equity (5,341 units) Investment date 9/21/20212022-01-012022-12-310001513363Non-control/Non-affiliate Investments Worldwide Express Operations, LLC Industry Transportation services Common Equity (752,380 units) Investment date 7/26/20212023-12-310001513363fdus:OnePointThreeNineEightPercentInterestRateMember2023-01-012023-12-310001513363Investments and Money Market Funds2023-12-310001513363fdus:SmallBusinessAdministrationDebenturesMember2014-01-012014-12-310001513363Non-control/Non-affiliate Investments CIH Intermediate, LLC Business Services Preferred Equity (563 shares) Investment date 3/3/20222023-12-310001513363fdus:FivePointSevenThreeFivePercentInterestRateMember2022-12-310001513363Non-control/Non-affiliate Investments Diversified Search LLC Business Services Common Equity Investment date 2/7/20192022-01-012022-12-310001513363fdus:AffiliateInvestmentsMemberfdus:StewardHoldingLlcMember2022-12-310001513363us-gaap:FairValueInputsLevel3Memberus-gaap:SubordinatedDebtMember2022-12-310001513363fdus:SupplementalDividendOneMember2022-08-012022-08-010001513363fdus:MirageTrailersLlcMemberfdus:AffiliateInvestmentsMember2022-12-310001513363Non-control/Non-affiliate Investments Worldwide Express Operations, LLC Industry Transportation services Second Lien Debt Variable Index Spread (S + 7.00%) Variable Index Floor (0.75%) Rate Cash 12.61% Rate PIK 0.00% Investment date 8/2/2021 Maturity 7/26/20292023-12-310001513363Non-control/Non-affiliate Investments CIH Intermediate, LLC Business Services Common Equity (563 shares) Investment date 3/3/20222022-01-012022-12-310001513363Non-control/Non-affiliate Investments Tedia Company, LLC. Healthcare Products Preferred Equity (1,000 units) Investment date 3/4/20222023-01-012023-12-310001513363us-gaap:SeniorNotesMember2023-12-310001513363Non-control/Non-affiliate Investments Aeronix Inc Aerospace & Defense Manufacturing2022-12-310001513363fdus:NotesMember2018-12-310001513363us-gaap:LineOfCreditMember2015-01-012015-12-310001513363fdus:TwoPointSevenNineThreePercentInterestRateMember2023-12-310001513363Non-control/Non-affiliate Investments Level Education Group, LLC (dba CE4Less) Business Services First Lien Debt Variable Index Spread (L +6.75%) Variable Index Floor (0.50%) Rate Cash 10.49% Rate PIK 0.00% Investment date 4/1/2021 Maturity 4/1/20262022-01-012022-12-310001513363Non-control/Non-affiliate Investments Winona Foods, Inc. Specialty Distribution First Lien Debt Variable Index Spread (L + 13.00%) Variable Index Floor (1.00%) Rate Cash 17.75% Rate PIK 0.00% Investment date 4/1/2021 Maturity 4/1/20262022-12-310001513363Non-control/Non-affiliate Investments Barefoot Mosquito and Pest Control, LLC Consumer Services First Lien Debt Variable Index Spread (S + 7.00%) Variable Index Floor (2.00%) Rate Cash 12.37% Rate PIK 0.00% Investment date 12/22/2023 Maturity 12/22/20292023-12-3100015133632021-02-090001513363Non-control/Non-affiliate Investments Aldinger Company Business Services Common Equity (7,883 units) Investment Date 6/30/20232023-01-012023-12-310001513363fdus:January2026NotesMember2020-12-310001513363fdus:SecondPriorityLiensOnCollateralSecuringLoansMayBeSubjectToControlBySeniorCreditorsWithFirstPriorityLienMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments Acendre Midco Inc Information Technology Services Common Equity (500,000 shares) Investment date 10/6/20212023-01-012023-12-310001513363us-gaap:FairValueInputsLevel3Memberfdus:FirstLienDebtMember2022-12-310001513363Control Investments US GreenFiber LLC Building Products Manufacturing Common Equity (1,022,813 units) Investment Date 7/1/20202023-01-012023-12-310001513363Non-control/Non-affiliate Investments Power Grid Components, Inc. Specialty Distribution Second Lien Debt Industry Rate Cash/PIK 11.00%/0.50% Investment date 4/12/2018 Maturity 12/2/20252022-12-310001513363Control Investments US GreenFiber LLC Building Products Manufacturing Second Lien Debt Rate Cash 10.00% Rate PIK 3.00% Investment date 7/3/2014 Maturity 8/30/20242023-01-012023-12-310001513363Non-control/Non-affiliate Investments MBS Opco, LLC (dba Marketron) Information Technology Services First Lien Debt Variable Index Spread (S +8.50%) Variable Index Floor (1.50%) Rate Cash 13.34% Rate PIK 0.00% Investment date 9/29/2022 Maturity 9/28/20262022-01-012022-12-310001513363us-gaap:ValuationTechniqueDiscountedCashFlowMemberus-gaap:FairValueInputsLevel3Memberfdus:FirstLienDebtMembersrt:MinimumMemberfdus:MeasurementInputWeightedAverageCostOfCapitalMember2022-12-310001513363fdus:DividendReinvestmentPlanMember2023-01-012023-03-310001513363fdus:SmallBusinessAdministrationDebenturesMember2015-01-012015-12-310001513363Non-control/Non-affiliate Investments Barefoot Mosquito and Pest Control, LLC Consumer Services2023-12-3100015133632021-10-012021-12-310001513363fdus:ValuationTechniqueEnterpriseValueMemberus-gaap:FairValueInputsLevel3Memberfdus:MeasurementInputAssetCoverageMemberfdus:FirstLienDebtMember2023-12-310001513363Non-control/Non-affiliate Investments Global Plasma Solutions, Inc. Component Manufacturing Subordinated Debt Rate Cash 0.00% Rate PIK 18.80% Investment date 3/31/2023 Maturity 3/18/20242023-01-012023-12-310001513363us-gaap:SeniorNotesMember2021-01-012021-12-310001513363Non-control/Non-affiliate Investments LifeSpan Biosciences, Inc. Healthcare Products Common Equity (100 shares) Investment date 3/19/20212023-01-012023-12-310001513363fdus:FivePointThreeSevenFivePercentNotesDueTwoThousandTwentyFourMember2019-10-230001513363Affiliate Investments Applegate Greenfiber Intermediate Inc ( fka US GreenFiber LLC) Building Products Manufacturing Common Equity (5,690 units) Investment date 12/31/20212022-01-012022-12-310001513363Non-control/Non-affiliate Investments Acendre Midco Inc Information Technology Services Warrant (150,000 shares) Investment date 10/6/20212023-12-310001513363fdus:AffiliateInvestmentsMemberfdus:FarResearchIncMember2021-12-310001513363Affiliate Investments Medsurant Holdings LLC Healthcare Services2023-12-310001513363Non-control/Non-affiliate Investments US Fertility Enterprises, LLC Industry Healthcare Services Subordinated Debt Rate Cash 0.00% Rate PIK 13.75% Investment date 5/19/2023 Maturity 6/1/20282023-01-012023-12-310001513363us-gaap:RevolvingCreditFacilityMemberfdus:IngCapitalLimitedLiabilityCompanyMemberfdus:SeniorSecuredRevolvingCreditAgreementMember2019-04-240001513363fdus:ThreePointTwoSixZeroPercentInterestRateMember2022-12-310001513363Non-control/Non-affiliate Investments Ameriwater LLC Component Manufacturing2022-12-310001513363Non-control/Non-affiliate Investments Comply365, LLC Aerospace & Defense Manufacturing Common Equity Investment date 12/11/20202022-12-310001513363Non-control/Non-affiliate Investments Auto CRM LLC (dba Dealer Holdings) Information Technology Services Subordinated Debt Rate Cash 0.00% Rate PIK 12.75% Investment date 10/1/2021 Maturity 12/31/20262022-12-310001513363fdus:ThreePointTwoFourNinePercentInterestRateMember2022-12-310001513363Non-control/Non-affiliate Investments United Biologics, LLC. Industry Healthcare Services Warrant (57,469 units) Investment date 3/5/20122023-01-012023-12-3100015133632022-05-022022-05-020001513363Non-control/Non-affiliate Investments Micronics Filtration Holdings, Inc. (dba Micronics Engineered Filtration Group, Inc.) Component Manufacturing First Lien Debt Variable Index Spread (S+5.50%) Variable Index Floor (0.50%) Rate Cash 10.84% Rate PIK 0.00% Investment date 2/17/2022 Maturity 2/17/20272023-12-310001513363Non-control/Non-affiliate Investments BP Thrift Buyer, LLC (dba myUnique and Ecothrift) Retail Common Equity (1000 units) Investment date 9/13/20222023-01-012023-12-310001513363fdus:ValuationTechniqueEnterpriseValueMemberus-gaap:FairValueInputsLevel3Memberus-gaap:MeasurementInputRevenueMultipleMemberfdus:FirstLienDebtMembersrt:WeightedAverageMember2022-12-310001513363Non-control/Non-affiliate Investments Winona Foods, Inc. Specialty Distribution First Lien Debt Variable Index Spread (L + 13.00%) Variable Index Floor (1.00%) Rate Cash 17.75% Rate PIK 0.00% Investment date 4/1/2021 Maturity 4/1/20262022-01-012022-12-310001513363Non-control/Non-affiliate Investments APM Intermediate Holdings, LLC (dba Artistic Paver Manufacturing, Inc.) Building Products Manufacturing First Lien Debt Variable Index Spread (S + 7.00%) Variable Index Floor (2.00%) Rate Cash 12.39% Rate PIK 0.00% Investment date 11/8/2022 Maturity 11/8/20272023-01-012023-12-310001513363us-gaap:ValuationTechniqueDiscountedCashFlowMemberus-gaap:FairValueInputsLevel3Memberfdus:FirstLienDebtMembersrt:MinimumMemberfdus:MeasurementInputWeightedAverageCostOfCapitalMember2023-12-310001513363Non-control/Non-affiliate Investments Zonkd, LLC Component Manufacturing2022-12-310001513363fdus:DividendReinvestmentPlanMember2022-07-012022-09-300001513363fdus:InvestmentAdvisoryAgreementMember2023-12-310001513363Non-control/Non-affiliate Investments Applied Data Corporation Information Technology Services First Lien Debt Variable Index Spread (S + 6.25%) Variable Index Floor (1.50%) Rate Cash 11.84% Rate PIK 0.00% Investment date 11/6/2020 Maturity 11/6/20252023-01-012023-12-310001513363Non-control/Non-affiliate Investments BurgerFi International, LLC (dba BurgerFi) Restaurants Common Equity (14,201 units) Investment date 11/3/20222023-01-012023-12-310001513363Non-control/Non-affiliate Investments Hallmark Health Care Solutions, Inc. Healthcare Services Common Equity (3,645,752 units) Investment date 9/18/20232023-01-012023-12-310001513363Non-control/Non-affiliate Investments BCM One Group Holdings, Inc. Information Technology Services Subordinated Debt Rate Cash 11.75% Rate PIK 0.00% Investment date 11/17/2021 Maturity 11/17/20282023-12-310001513363fdus:SmallBusinessAdministrationDebenturesMember2023-12-3100015133632015-12-310001513363us-gaap:ValuationTechniqueDiscountedCashFlowMemberus-gaap:FairValueInputsLevel3Memberfdus:SecondLienDebtMembersrt:MinimumMemberfdus:MeasurementInputWeightedAverageCostOfCapitalMember2023-12-310001513363Non-control/Non-affiliate Investments Green Cubes Technology, LLC (dba Green Cubes) Information Technology Services First Lien Debt Variable Index Spread (L +13.00%) Variable Index Floor (0.00%) Rate Cash 17.77% Rate PIK 0.00% Investment date 12/17/2021 Maturity 12/17/20242022-01-012022-12-310001513363fdus:November2026NotesMember2021-10-082021-10-080001513363Non-control/Non-affiliate Investments Auto CRM LLC (dba Dealer Holdings) Information Technology Services2023-12-310001513363fdus:ThreePointFiveZeroPercentNotesDueTwoThousandTwentySixMember2021-10-080001513363fdus:InvestmentAdvisorOrCommitteeMayPossessMaterialNonPublicInformationMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments Ad Info Parent, Inc. (dba MediaRadar) Information Technology Services Preferred Equity (1,250,000 units) Investment date 11/1/20232023-12-310001513363Non-control/Non-affiliate Investments Zonkd, LLC Industry Component Manufacturing Common Equity (4,987 units) Investment date 3/18/20222022-12-310001513363fdus:WonderwareHoldingsLlcDbaCoreBusinessTechnologiesMemberfdus:InformationTechnologyServicesMemberfdus:FirstLienDebtMemberfdus:NonControlOrNonAffiliateInvestmentsMember2023-12-310001513363fdus:FirstLienDebtMemberfdus:NonControlOrNonAffiliateInvestmentsMemberfdus:ApmIntermediateHoldingsLlcMemberfdus:BuildingProductsManufacturingMember2022-12-310001513363Non-control/Non-affiliate Investments Healthfuse, LLC Healthcare Services Preferred Equity (197,980 units) Investment date 11/13/20202023-01-012023-12-310001513363srt:MinimumMember2023-12-310001513363Non-control/Non-affiliate Investments Education Incites, LLC (dba Acceleration Academies) Business Services Second Lien Debt Cash 12.75% Rate PIK 0.00% Investment date 10/31/2022 Maturity 10/29/20272022-01-012022-12-310001513363Non-control/Non-affiliate Investments Acendre Midco Inc Information Technology Services Warrant (150,000 shares) Investment date 10/6/20212023-01-012023-12-310001513363fdus:TypicalRiskAssociatedWithOIDAndPIKInteretsIncomeMember2023-01-012023-12-310001513363fdus:November2026NotesMember2022-01-012022-12-310001513363us-gaap:WarrantMemberus-gaap:FairValueInputsLevel3Member2022-12-310001513363Control Investments US GreenFiber LLC Building Products Manufacturing Second Lien Debt Rate Cash 10.00% Rate PIK 3.00% Investment date 7/3/2014 Maturity 8/30/20242023-12-310001513363Non-control/Non-affiliate Investments Applied Data Corporation Information Technology Services Common Equity (24 units) Investment date 11/6/20202022-12-310001513363Non-control/Non-affiliate Investments BCM One Group Holdings, Inc. Information Technology Services Subordinated Debt Rate Cash 11.75% Rate PIK 0.00% Investment date 11/17/2021 Maturity 11/17/20282023-01-012023-12-310001513363fdus:DebtSecuritiesOfLeveragedCompaniesThatMayExperienceBankruptcyOrSimilarFinancialDistressMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments ECM Industries, LLC Component Manufacturing Common Equity (1,000,000 shares) Investment date 4/30/20202022-12-310001513363Affiliate Investments Pfanstiehl Inc Health Products Common Equity (2,550 units) Investment date 3/29/20132023-12-310001513363us-gaap:AdditionalPaidInCapitalMember2020-12-310001513363Non-control/Non-affiliate Investments Worldwide Express Operations, LLC Transportation services Common Equity (752,380units) Investment date 7/26/20212022-12-310001513363Control Investments US GreenFiber LLC Building Products Manufacturing2022-12-310001513363fdus:February2024NotesMember2019-12-310001513363Non-control/Non-affiliate Investments Aldinger Company Business Services First Lien Debt Variable Index Spread (S +6.50%) Variable Index Floor (2.00%) Rate Cash 11.89% Rate PIK 0.00% Investment date 6/30/2023 Maturity 6/29/20292023-12-310001513363Non-control/Non-affiliate Investments Power Grid Components, Inc. Specialty Distribution Preferred Equity (48 shares) Investment date 12/2/20192022-12-310001513363fdus:UnitedStatesMidwestMember2022-01-012022-12-310001513363fdus:UnitrancheInvestmentsMember2022-01-012022-12-310001513363us-gaap:MoneyMarketFundsMember2023-12-3100015133632023-01-012023-03-310001513363us-gaap:ValuationTechniqueDiscountedCashFlowMemberus-gaap:FairValueInputsLevel3Memberfdus:SecondLienDebtMemberfdus:MeasurementInputWeightedAverageCostOfCapitalMember2023-12-310001513363Non-control/Non-affiliate Investments Westerns Smokehouse, LLC First Lien Debt Consumer Products Variable Index Spread/ Floor(S + 6.50%) /(1.50%) Rate Cash/PIK 11.21%/ 0.00% Investment date 2/28/2020 Maturity 12/23/20242022-12-310001513363fdus:K2MergerAgreementAgentLlcMemberus-gaap:EstimateOfFairValueFairValueDisclosureMember2022-12-310001513363fdus:ThreePointTwoSevenSevenPercentInterestRateMember2022-12-310001513363fdus:SupplementalDividendMember2023-08-010001513363Non-control/Non-affiliate Investments Dataguise, Inc. Information Technology Services Common Equity (909 shares) Investment date 12/31/20202023-12-310001513363Non-control/Non-affiliate Investments Zonkd, LLC Industry Component Manufacturing Common Equity (4,987 units) Investment date 3/18/20222022-01-012022-12-310001513363Non-control/Non-affiliate Investments 2KDirect Inc (dba iPromote) Information Technology Services First Lien Debt Variable Index Spread (L +6.75%) Variable Index Floor (0.50%) Rate Cash 11.48% Rate PIK 0.00% Investment date 7/30/2021 Maturity 6/25/20262022-01-012022-12-310001513363us-gaap:FairValueInputsLevel3Memberus-gaap:SubordinatedDebtMember2023-12-310001513363fdus:SixPointZeroZeroZeroPercentNotesDueTwoThousandTwentyFourMember2019-02-190001513363us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2023-01-012023-12-310001513363fdus:ThreePointTwoFourNinePercentInterestRateMember2023-01-012023-12-310001513363fdus:ThreePointFiveZeroPercentNotesDueTwoThousandTwentySixMember2023-12-310001513363fdus:AdministrationAgreementMember2021-01-012021-12-310001513363Non-control/Non-affiliate Investments Tedia Company, LLC Healthcare Products Delayed Draw Commitment ($3,000 unfunded commitment) Variable Index Spread (S +7.75%) Variable Index Floor (1.00%) Rate Cash 11.57% Rate PIK 0.00% Investment date 03/04/2022 Maturity 03/04/20272022-01-012022-12-310001513363fdus:SupplementalDividendTwoMember2022-08-010001513363us-gaap:RevolvingCreditFacilityMemberfdus:IngCapitalLimitedLiabilityCompanyMemberfdus:SeniorSecuredRevolvingCreditAgreementMember2022-08-170001513363Affiliate Investments Medsurant Holding LLC Healthcare Services Preferred Equity (84,997 units) Investment date 4/12/20112022-12-310001513363fdus:AffiliateInvestmentMembersrt:MinimumMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments Acendre Midco Inc Information Technology Services Warrant (150,000 shares) Investment date 10/6/20212022-01-012022-12-310001513363Non-control/Non-affiliate Investments CIH Intermediate, LLC Business Services2022-12-310001513363Non-control/Non-affiliate Investments R1 Holdings, LLC (dba RoadOne IntermodaLogistics) Transportation services Subordinated Debt ($417 unfunded commitment) Rate Cash/PIK 8.75%/5.00% Investment date 12/30/2022 Maturity 6/30/20292023-12-310001513363fdus:UnitedStatesMidwestMember2023-01-012023-12-310001513363fdus:R1HoldingsLlcDbaRoadoneIntermodalogisticsFirstLienDebtMember2022-12-310001513363Non-control/Non-affiliate Investments Acendre Midco Inc Information Technology Services First Lien Debt Variable Index Spread (S +7.75%) Variable Index Floor (0.50%) Rate Cash 13.41% Rate PIK 0.00% Investment date 10/6/2021 Maturity 10/6/2026 Principal Amount 12,4062023-01-012023-12-310001513363Non-control/Non-affiliate Investments ISI PSG Holdings, LLC (dba Incentive Solutions, Inc.) Business Services First Lien Debt Variable Index Spread (L +7.50%) Variable Index Floor (0.50%) Rate Cash 11.17% Rate PIK 0.00% Investment date 6/30/2021 Maturity 4/5/20262022-01-012022-12-310001513363Non-control/Non-affiliate Investments Barefoot Mosquito and Pest Control, LLC Consumer Services Revolving Loan ($1,500 unfunded commitment) Variable Index Spread (S + 7.00%) Variable Index Floor (2.00%) Rate Cash 12.37% Rate PIK 0.00% Investment date 12/22/2023 Maturity 12/22/20292023-01-012023-12-310001513363us-gaap:AdditionalPaidInCapitalMember2021-01-012021-12-310001513363fdus:RaymondJamesAndAssociatesIncAndRobertWBairdAndCoMemberus-gaap:CommonStockMember2022-01-012022-12-310001513363Non-control/Non-affiliate Investments Hub Acquisition Sub, LLC (dba Hub Pen) Promotional products Common Equity (5,837 units) Investment date 3/23/20162023-12-310001513363fdus:SharesTradeAtDiscountToNetAssetValueMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments Puget Collision, LLC Retail First Lien Debt Variable Index Spread (S + 8.50%) Variable Index Floor (1.00%) Rate Cash 13.84% Rate PIK 0.00% Investment date 4/28/2023 Maturity 9/12/20272023-12-310001513363fdus:ChoiceTechnologySolutionsLlcDbaChoiceMerchantSolutionsLlcRevolvingLoanMember2022-12-310001513363fdus:AffiliateInvestmentsMemberfdus:MedsurantHoldingsLlcMember2023-12-310001513363us-gaap:FairValueInputsLevel3Memberfdus:SecondLienDebtMemberus-gaap:FairValueMeasurementsRecurringMember2022-12-310001513363fdus:SpecialDividendMember2023-05-022023-05-020001513363fdus:AffiliateInvestmentsMemberfdus:SpectraAAndDAcquisitionIncMember2021-12-310001513363Affiliate Investments Applegate Greenfiber Intermediate Inc ( fka US GreenFiber LLC) Building Products Manufacturing Common Equity (2,012 units) Investment date 12/31/20212023-12-310001513363Non-control/Non-affiliate Investments Applied Data Corporation Information Technology Services First Lien Debt Variable Index Spread (S +6.25%) Variable Index Floor (1.50%) Rate Cash 10.07% Rate PIK 0.00% Investment date 11/6/2020 Maturity 11/6/20252022-12-310001513363fdus:InvestmentsInPortfolioCompaniesInvolvesNumberOfSignificantRisksMember2023-01-012023-12-310001513363Affiliate Investments Applegate Greenfiber Intermediate Inc ( fka US GreenFiber LLC) Building Products Manufacturing2023-12-310001513363fdus:SecondLienDebtMember2022-12-310001513363us-gaap:FairValueInputsLevel1Member2023-12-310001513363Non-control/Non-affiliate Investments QED Technologies International, Inc. Component Manufacturing First Lien Debt (S + 6.25%) Variable Index Floor (1.50%) Rate Cash 11.14% Rate PIK 0.50% Investment date 3/1/2023 Maturity 3/1/2028 2023-12-310001513363Non-control/Non-affiliate Investments 2KDirect Inc (dba iPromote) Information Technology Services Common Equity (1,000,000 units) Investment date 6/25/20212022-12-310001513363fdus:FivePointEightSixOnePercentInterestRateTwoMember2023-01-012023-12-310001513363fdus:InvestmentInOurSecuritiesMayInvolveAboveAverageDegreeOfRiskMember2023-01-012023-12-310001513363fdus:ThreePointTwoSixZeroPercentInterestRateMember2023-01-012023-12-310001513363us-gaap:MeasurementInputEbitdaMultipleMemberfdus:ValuationTechniqueEnterpriseValueMemberus-gaap:FairValueInputsLevel3Memberus-gaap:SubordinatedDebtMembersrt:WeightedAverageMember2023-12-310001513363Non-control/Non-affiliate Investments Micronics Filtration Holdings, Inc. (dba Micronics Engineered Filtration Group, Inc.) Component Manufacturing Common Equity (14,400 units) Investment date 2/17/20222023-01-012023-12-310001513363fdus:ThreePointTwoSevenSevenPercentInterestRateMember2023-12-310001513363Non-control/Non-affiliate Investments QED Technologies International, Inc. Component Manufacturing2023-12-310001513363Non-control/Non-affiliate Investments Virginia Tile Company, LLC Industry Specialty Distribution Common Equity (17 Units) Investment date 12/19/20142023-01-012023-12-310001513363Non-control/Non-affiliate Investments AOM Intermediate Holdco, LLC (dbaAllOver Media) Information Technology Services Common Equity (1,232 units) Investment date 2/1/20222023-12-3100015133632013-12-310001513363fdus:EquityInvestmentMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2023-01-012023-12-310001513363us-gaap:ValuationTechniqueDiscountedCashFlowMembersrt:MaximumMemberus-gaap:FairValueInputsLevel3Memberfdus:SecondLienDebtMemberfdus:MeasurementInputWeightedAverageCostOfCapitalMember2022-12-310001513363Non-control/Non-affiliate Investments Elements Brands, LLC Consumer Products Revolving Loan Cash 12.25% Rate PIK 0.00% Investment date 12/31/2020 Maturity 6/30/20242022-01-012022-12-310001513363fdus:AomIntermediateHoldcoLlcMemberfdus:InformationTechnologyServicesMemberfdus:FirstLienDebtMemberfdus:NonControlOrNonAffiliateInvestmentsMember2022-12-310001513363Non-control/Non-affiliate Investments Allredi LLC (fka Macro Group International OpCo. LLC) Industrial Cleaning & Coatings Common Equity (570,636 units) Investment date 7/21/20172022-12-310001513363us-gaap:AdditionalPaidInCapitalMember2022-12-310001513363fdus:ElementsBrandsLlcRevolvingLoanMember2023-12-310001513363fdus:WesternsSmokehouseLlcDelayedDrawTermLoanMember2022-12-310001513363Non-control/Non-affiliate Investments BP Thrift Buyer, LLC (dba myUnique and Ecothrift) Retail Common Equity (1000 units) Investment date 9/13/20222022-12-310001513363Non-control/Non-affiliate Investments Ameriwater LLC Component Manufacturing First Lien Debt Variable Index Spread (S +6.25%) Variable Index Floor (1.00%) Rate Cash 9.81% Rate PIK 0.00% Investment date 7/8/2022 Maturity 7/8/20272022-01-012022-12-3100015133632023-08-010001513363Non-control/Non-affiliate Investments Winona Foods, Inc. Specialty Distribution2022-12-310001513363Non-control/Non-affiliate Investments Rhino Assembly Company, LLC Specialty Distribution Preferred Equity (Units N/A) Investment date 12/10/20202022-12-310001513363us-gaap:AccumulatedDistributionsInExcessOfNetIncomeMember2021-12-310001513363fdus:FidusInvestmentAdvisorsLlcMember2011-06-012023-12-310001513363Non-control/Non-affiliate Investments CTM Group, Inc. Business Services First Lien Debt Variable Index Spread (S +6.75%) Variable Index Floor (1.00%) Rate Cash 12.29% Rate PIK 0.00% Investment date 2/28/2023 Maturity 11/30/20262023-12-310001513363Non-control/Non-affiliate Investments Applied Data Corporation Information Technology Services Preferred Equity (1,184,711 units) Investment date 11/6/20202023-01-012023-12-310001513363fdus:November2026NotesMember2023-12-310001513363Non-control/Non-affiliate Investments Tedia Company, LLC Healthcare Products Subordinated Debt Cash 7.25% Rate PIK 7.25% Investment date 03/04/2022 Maturity 09/04/20272022-01-012022-12-310001513363fdus:ValuationTechniqueEnterpriseValueMemberus-gaap:FairValueInputsLevel3Memberfdus:MeasurementInputAssetCoverageMemberfdus:FirstLienDebtMember2022-12-310001513363Non-control/Non-affiliate Investments ECM Industries, LLC Component Manufacturing Common Equity Investment date 4/30/20202022-12-310001513363Non-control/Non-affiliate Investments APM Intermediate Holdings, LLC (dba Artistic Paver Manufacturing, Inc.) Building Products Manufacturing2022-12-3100015133632014-12-310001513363Non-control/Non-affiliate Investments United Biologics, LLC. Industry Healthcare Services Preferred Equity (98,377 units) Investment date 4/1/20122022-12-310001513363Non-control/Non-affiliate Investments Acendre Midco Inc Information Technology Services Warrant (150,000 shares) Investment date 10/6/20212022-12-310001513363Non-control/Non-affiliate Investments Tedia Company, LLC Healthcare Product Preferred Equity (Series A) (1,000 units) Investment date 03/04/20222022-12-310001513363Non-control/Non-affiliate Investments Auto CRM LLC (dba Dealer Holdings) Information Technology Services Common Equity (500 units) Investment date 10/1/20212023-12-310001513363fdus:TediaCompanyLlcRevolvingLoanMember2022-12-310001513363Affiliate Investments Applegate Greenfiber Intermediate Inc ( fka US GreenFiber LLC) Building Products Manufacturing2022-12-310001513363Non-control/Non-affiliate Investments Fishbowl Solutions, LLC Information Technology Services First Lien Debt Variable Index Spread (S +7.75%) Variable Index Floor (1.00%) Rate Cash 13.40% Rate PIK 0.00% Investment date 3/25/2022 Maturity 3/25/20272023-01-012023-12-310001513363fdus:ThreePointTwoSixSevenPercentInterestRateMember2023-12-310001513363fdus:AdministrationAgreementMember2022-12-310001513363fdus:FirstLienDebtSixMemberfdus:InformationTechnologyServicesMemberfdus:NetbaseSolutionsIncMemberfdus:NonControlOrNonAffiliateInvestmentsMember2022-12-310001513363Non-control/Non-affiliate Investments Winona Foods, Inc. Industry Specialty Distribution First Lien Debt Variable Index Spread (L + 12.00%) Variable Index Floor (1.00%) Rate Cash 16.75% Rate PIK 0.00% Investment date 4/1/2021 Maturity 4/1/20262022-12-310001513363fdus:FirstLienDebtMember2022-12-310001513363fdus:SecondLienDebtMember2023-12-310001513363fdus:AffiliateInvestmentsMemberfdus:SpectraAAndDAcquisitionIncMember2022-12-310001513363Non-control/Non-affiliate Investments CTM Group, Inc. Business Services Common Equity (400,000 units) Investment date 2/28/20232023-01-012023-12-310001513363Non-control/Non-affiliate Investments GP&C Operations, LLC (dba Garlock Printing and Converting) Component Manufacturing First Lien Debt Variable Index Spread (L +8.25%) Variable Index Floor (1.00%) Rate Cash 13.01% Rate PIK 0.00% Investment date 1/22/2021 Maturity 1/22/20262022-01-012022-12-310001513363Total Control Investments2023-12-310001513363us-gaap:FairValueInputsLevel3Member2022-12-310001513363Non-control/Non-affiliate Investments Acendre Midco Inc Information Technology Services First Lien Debt Variable Index Spread (S +7.75%) Variable Index Floor (0.50%) Rate Cash 13.41% Rate PIK 0.00% Investment date 10/6/2021 Maturity 10/6/20262023-01-012023-12-310001513363srt:MinimumMember2023-01-012023-12-310001513363fdus:NetbaseSolutionsIncDbaNetbaseQuidFirstLienDebtLastOutOneMember2022-12-310001513363Non-control/Non-affiliate Investments Ameriwater LLC Component Manufacturing Common Equity (1,000 units) Investment date 7/8/20222023-12-310001513363Non-control/Non-affiliate Investments Virtex Enterprises, LP Industry Component Manufacturing Subordinated Debt Variable Index Spread (S + 4.00%) Variable Index Floor (2.50%) Rate Cash 9.46% Rate PIK 0.00% Investment date 9/20/2023 Maturity 12/31/20252023-01-012023-12-310001513363Non-control/Non-affiliate Investments Haematologic Technologies, Inc. Healthcare Services First Lien Debt Variable Index Spread (L +8.25%) Variable Index Floor (2.00%) Rate Cash 12.98% Rate PIK 0.00% Investment date 10/11/2019 Maturity 10/11/20242022-12-310001513363Non-control/Non-affiliate Investments Road Safety Services, Inc. Common Equity (779 units) Industry Business Services Investment date 9/18/20182022-12-310001513363fdus:InformationTechnologyServicesMemberfdus:FirstLienDebtMemberfdus:NetbaseSolutionsIncMemberfdus:NonControlOrNonAffiliateInvestmentsMember2023-12-3100015133632022-02-150001513363fdus:InformationTechnologyServicesMemberfdus:FishbowlSolutionsLlcMemberfdus:FirstLienDebtMemberfdus:NonControlOrNonAffiliateInvestmentsMember2023-12-310001513363us-gaap:EstimateOfFairValueFairValueDisclosureMember2023-12-310001513363fdus:February2024NotesMember2020-01-012020-12-310001513363Non-control/Non-affiliate Investments MDME Holding Corp. Healthcare Products Preferred Equity (12,500 units) Investment date 9/18/20232023-12-310001513363Non-control/Non-affiliate Investments Suited Connector LLC Information Technology Services Second Lien Debt Rate Cash/PIK 0.00%/12.00% Investment date 10/29/2021 Maturity 6/1/20282023-12-310001513363fdus:UnrealizedDepreciationOnInvestmentPortfolioMayBeIndicationOfFutureRealizedLossesMember2023-01-012023-12-310001513363fdus:November2026NotesMember2021-12-310001513363Non-control/Non-affiliate Investments Global Plasma Solutions, Inc. Component Manufacturing Common Equity (947 shares) Investment date 9/21/20182023-01-012023-12-310001513363Non-control/Non-affiliate Investments Choice Technology Solutions, LLC (dba Choice Merchant Solutions, LLC) Information Technology Services Revolving Loan ($1,000 unfunded commitment) Variable Index Spread (S +6.25%) Variable Index Floor (1.00%) Rate Cash 11.89% Rate PIK 0.00% Investment date 4/1/2022 Maturity 4/1/20272023-01-012023-12-310001513363fdus:UnitedStatesSouthwestMember2022-01-012022-12-310001513363Non-control/Non-affiliate Investments Ameriwater LLC Component Manufacturing2023-12-310001513363Non-control/Non-affiliate Investments Worldwide Express Operations, LLC Transportation services Common Equity (795,000units) Investment date 7/21/20212022-12-310001513363Non-control/Non-affiliate Investments Power Grid Components, Inc. Specialty Distribution Common Equity (10,622 shares) Investment date 4/12/20182022-12-3100015133632024-01-012024-02-270001513363fdus:RenductionInAssetCoverageRequirementMayIncreaseRiskOfInvestingInCompanyMember2023-01-012023-12-310001513363us-gaap:SubsequentEventMember2024-02-132024-02-130001513363Affiliate Investments Pfanstiehl Inc Health Products Common Equity (2,550 units) Investment date 3/29/20132022-01-012022-12-310001513363us-gaap:WarrantMember2022-12-310001513363us-gaap:LineOfCreditMember2014-12-310001513363Non-control/Non-affiliate Investments Netbase Solutions, Inc. (dba Netbase Quid) Information Technology Services First Lien Debt ($3,300 unfunded commitment) Variable Index Spread (P +4.00%) Variable Index Floor (3.25%) Rate Cash 11.50% Rate PIK 0.00% Investment date 11/18/2021 Maturity 11/18/20252022-12-310001513363fdus:FivePointEightSixOnePercentInterestRateThreeMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments Auto CRM LLC (dba Dealer Holdings) Information Technology Services Subordinated Debt Rate Cash 0.00% Rate PIK 14.50% Investment date 10/1/2021 Maturity 12/31/20262023-01-012023-12-310001513363fdus:NonControlOrNonAffiliateInvestmentsMember2023-12-310001513363Non-control/Non-affiliate Investments Elements Brands, LLC Consumer Products Revolving Loan Cash 12.25% Rate PIK 0.00% Investment date 12/31/2020 Maturity 6/30/20242022-12-310001513363fdus:AffiliateInvestmentsMemberfdus:MedsurantHoldingsLlcMember2023-01-012023-12-3100015133632023-02-150001513363Non-control/Non-affiliate Investments Healthfuse, LLC Healthcare Services Preferred Equity Investment date 11/13/20202022-12-310001513363fdus:FivePointEightSixOnePercentInterestRateThreeMember2023-12-310001513363us-gaap:ValuationTechniqueDiscountedCashFlowMembersrt:MaximumMemberus-gaap:FairValueInputsLevel3Memberfdus:SecondLienDebtMemberfdus:MeasurementInputWeightedAverageCostOfCapitalMember2023-12-3100015133632021-05-032021-05-030001513363us-gaap:ValuationTechniqueDiscountedCashFlowMemberus-gaap:FairValueInputsLevel3Memberfdus:SecondLienDebtMemberfdus:MeasurementInputWeightedAverageCostOfCapitalMembersrt:WeightedAverageMember2023-12-310001513363Non-control/Non-affiliate Investments Aldinger Company Business Services Preferred Equity (7,883 units) Investment Date 6/30/20232023-12-310001513363fdus:SmallBusinessAdministrationDebenturesMember2020-01-012020-12-310001513363us-gaap:ValuationTechniqueDiscountedCashFlowMemberus-gaap:FairValueInputsLevel3Memberfdus:FirstLienDebtMemberfdus:MeasurementInputWeightedAverageCostOfCapitalMember2022-12-310001513363Non-control/Non-affiliate Investments Worldwide Express Operations, LLC Industry Transportation services Common Equity (795,000units) Investment date 7/21/20212023-01-012023-12-310001513363us-gaap:MeasurementInputEbitdaMultipleMemberfdus:ValuationTechniqueEnterpriseValueMemberus-gaap:FairValueInputsLevel3Member2022-12-310001513363Non-control/Non-affiliate Investments Prime AE Group, Inc. Business Services Preferred Equity (900,000 shares) Investment date 11/25/20192023-01-012023-12-310001513363us-gaap:WarrantMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2022-12-310001513363fdus:AdInfoParentIncDbaMediaradarRevolvingLoanMember2023-12-310001513363Non-control/Non-affiliate Investments Gurobi Optimization, LLC Information Technology Services Common Equity (5 shares) Investment date 12/19/20172023-12-310001513363us-gaap:SeniorNotesMember2022-01-012022-12-310001513363fdus:SignificantFluctualtionOnMarketPriceOfSecuritiesMember2023-01-012023-12-310001513363fdus:EblLlcMemberfdus:ControlInvestmentsMember2023-01-012023-12-310001513363fdus:January2026NotesMember2021-12-310001513363Non-control/Non-affiliate Investments Applied Data Corporation Information Technology Services Common Equity (24 units) Investment date 11/6/20202023-01-012023-12-310001513363fdus:FourPointSevenFivePercentNotesDueTwoThousandTwentySixMember2020-12-232020-12-230001513363Non-control/Non-affiliate Investments Hub Acquisition Sub, LLC (dba Hub Pen) Promotional products Preferred Equity (868 units) Investment date 10/16/20202022-12-310001513363fdus:EquityInvestmentMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2023-12-310001513363Non-control/Non-affiliate Investments Palmetto Moon, LLC Retail Common Equity (499 units) Investment date 11/3/20162022-12-310001513363Non-control/Non-affiliate Investments Allredi LLC (fka Macro Group International OpCo. LLC) Industrial Cleaning & Coatings Common Equity (39,443 units) Investment date 11/24/20212023-01-012023-12-310001513363fdus:FivePointFourThreeNinePercentInterestRateOneMember2023-01-012023-12-310001513363us-gaap:AccumulatedDistributionsInExcessOfNetIncomeMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments Tedia Company, LLC. Healthcare Products Preferred Equity (1,000 units) Investment date 3/4/20222023-12-310001513363Non-control/Non-affiliate Investments Applied Data Corporation Information Technology Services First Lien Debt Variable Index Spread (S +6.25%) Variable Index Floor (1.50%) Rate Cash 10.07% Rate PIK 0.00% Investment date 11/6/2020 Maturity 11/6/20252022-01-012022-12-310001513363Non-control/Non-affiliate Investments Dataguise, Inc. Information Technology Services Common Equity (909 shares) Investment date 12/31/20202022-12-310001513363Money Market Funds2022-12-310001513363Non-control/Non-affiliate Investments Dealerbuilt Acquisition, LLC Information Technology Services2023-12-310001513363Non-control/Non-affiliate Investments Ad Info Parent, Inc. (dba MediaRadar) Information Technology Services Revolving Loan ($1,442 unfunded commitment) Variable Index Spread (S+6.25%) Variable Index Floor (1.00%) Rate Cash 11.75% Rate PIK 0.00% Investment date 11/1/2023 Maturity 9/16/20292023-12-310001513363fdus:CybersecurityRisksAndCyberIncidentsMember2023-01-012023-12-310001513363us-gaap:RevolvingCreditFacilityMemberfdus:IngCapitalLimitedLiabilityCompanyMemberfdus:SeniorSecuredRevolvingCreditAgreementMember2020-06-262020-06-260001513363Non-control/Non-affiliate Investments Tedia Company, LLC. Healthcare Products Revolving Loan ($2,400 unfunded commitment) Variable Index Spread (S + 7.75%) Variable Index Floor (1.00%) Rate Cash 13.41% Rate PIK 0.00% Investment date 3/4/2022 Maturity 3/4/20272023-01-012023-12-3100015133632022-01-012022-12-310001513363us-gaap:AdditionalPaidInCapitalMember2022-01-012022-12-310001513363Non-control/Non-affiliate Investments Bad Boy Mowers JV Acquisition, LLC Consumer Products Preferred Equity (13,000 units) Investment date 11/9/20232023-01-012023-12-310001513363fdus:SmallBusinessAdministrationDebenturesMember2023-01-012023-12-310001513363fdus:AffiliateInvestmentsMemberfdus:FarResearchIncMember2022-01-012022-12-310001513363us-gaap:FairValueInputsLevel3Memberfdus:SecondLienDebtMember2023-12-310001513363us-gaap:CommonStockMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments Elements Brands, LLC Consumer Products First Lien Debt Cash 12.25% Rate PIK 0.00% Investment date 12/31/2020 Maturity 6/30/20242023-01-012023-12-310001513363fdus:ValuationTechniqueEnterpriseValueMemberus-gaap:FairValueInputsLevel3Memberfdus:MeasurementInputAssetCoverageMemberfdus:SecondLienDebtMember2022-12-310001513363fdus:FivePointEightSevenFiveNotesDueMember2018-02-022018-02-020001513363Non-control/Non-affiliate Investments USG AS Holdings, LLC Industry Utilities: Services First Lien Debt Variable Index Spread (S + 8.50%) Variable Index Floor (2.50%) Rate Cash 14.04% Rate PIK 0.00% Investment date 2/21/2023 2023-01-012023-12-310001513363fdus:AffiliateInvestmentsMemberfdus:StewardHoldingLlcMember2022-01-012022-12-310001513363fdus:FirstLienDebtMember2022-12-310001513363fdus:November2024NotesMember2019-10-232019-10-230001513363fdus:UsGreenfiberLlcMemberfdus:ControlInvestmentsMember2022-12-310001513363Non-control/Non-affiliate Investments Prime AE Group, Inc. Business Services First Lien Debt Variable Index Spread (S + 7.25%) Variable Index Floor (2.00%) Rate Cash 12.72% Rate PIK 0.00% Investment date 11/25/2019 Maturity 11/25/20242023-12-310001513363fdus:RiskRelatedToInflationMember2023-01-012023-12-310001513363fdus:ValueOfPortfolioInvestmentAndValuationProcessCreatesConflictOfInterestMember2023-01-012023-12-310001513363fdus:ThreePointTwoZeroNinePercentInterestRateMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments Fishbowl Solutions, LLC Information Technology Services First Lien Debt Variable Index Spread (S +7.75%) Variable Index Floor (1.00%) Rate Cash 12.57% Rate PIK 0.00% Investment date 3/25/2022 Maturity 3/25/20272022-01-012022-12-310001513363fdus:AllrediLlcMemberus-gaap:CarryingReportedAmountFairValueDisclosureMember2022-12-310001513363Non-control/Non-affiliate Investments Bedford Precision Parts LLC Specialty Distribution Common Equity (500,000 units) Investment date 3/12/20192022-12-310001513363fdus:PfanstiehlIncMember2022-12-310001513363Non-control/Non-affiliate Investments Dealerbuilt Acquisition, LLC Information Technology Services Common Equity (1,000 Units) Investment date 7/21/20232023-12-310001513363Non-control/Non-affiliate Investments GP&C Operations, LLC (dba Garlock Printing and Converting) Component Manufacturing Common Equity (515,625 units) Investment date 1/22/20212022-01-012022-12-310001513363fdus:FluctuationsInQuarterlyOperatingResultsMember2023-01-012023-12-310001513363fdus:CreditLossRiskMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments PowerGrid Services Acquisition, LLC2022-12-310001513363Non-control/Non-affiliate Investments Tedia Company, LLC. Healthcare Products First Lien Debt Variable Index Spread (S + 7.75%) Variable Index Floor (1.00%) Rate Cash 13.41% Rate PIK 0.00% Investment date 3/4/2022 Maturity 3/4/20272023-01-012023-12-310001513363Non-control/Non-affiliate Investments Worldwide Express Operations, LLC Transportation services Common Equity (795,000units) Investment date 7/21/20212022-01-012022-12-310001513363fdus:TerroristAttacksActsOfWarOrNaturalDisastersMember2023-01-012023-12-310001513363us-gaap:ValuationTechniqueDiscountedCashFlowMemberus-gaap:FairValueInputsLevel3Memberus-gaap:SubordinatedDebtMemberfdus:MeasurementInputWeightedAverageCostOfCapitalMembersrt:WeightedAverageMember2022-12-310001513363Non-control/Non-affiliate Investments Suited Connector LLC2022-12-310001513363fdus:FirstLienDebtMemberfdus:NonControlOrNonAffiliateInvestmentsMemberfdus:HealthcareServicesMemberfdus:HaematologicTechnologiesIncMember2022-12-310001513363Non-control/Non-affiliate Investments Allredi LLC (fka Macro Group International OpCo. LLC) Industrial Cleaning & Coatings Common Equity (570,636 units) Investment date 7/21/20172022-01-012022-12-310001513363Non-control/Non-affiliate Investments QED Technologies International, Inc. Component Manufacturing First Lien Debt (S + 6.25%) Variable Index Floor (1.50%) Rate Cash 11.14% Rate PIK 0.50% Investment date 3/1/2023 Maturity 3/1/2028 2023-01-012023-12-310001513363us-gaap:MeasurementInputEbitdaMultipleMembersrt:MaximumMemberfdus:ValuationTechniqueEnterpriseValueMemberus-gaap:FairValueInputsLevel3Memberfdus:SecondLienDebtMember2022-12-310001513363Non-control/Non-affiliate Investments Haematologic Technologies, Inc. Healthcare Services First Lien Debt Variable Index Spread (S +8.25%) Variable Index Floor (2.00%) Rate Cash 13.85% Rate PIK 0.00% Investment date 10/11/2019 Maturity 10/11/20242023-12-310001513363fdus:FivePointEightSevenFiveNotesDueMember2021-01-192021-01-190001513363Non-control/Non-affiliate Investments Micronics Filtration Holdings, Inc. (dba Micronics Engineered Filtration Group, Inc.) Component Manufacturing First Lien Debt Variable Index Spread (S+5.50%) Variable Index Floor (0.50%) Rate Cash 10.84% Rate PIK 0.00% Investment date 2/17/2022 Maturity 2/17/20272023-01-012023-12-310001513363Non-control/Non-affiliate Investments Tedia Company, LLC Healthcare Products Delayed Draw Commitment ($3,000 unfunded commitment) Variable Index Spread (S +7.75%) Variable Index Floor (1.00%) Rate Cash 11.57% Rate PIK 0.00% Investment date 03/04/2022 Maturity 03/04/20272022-12-310001513363Non-control/Non-affiliate Investments American AllWaste LLC (dba WasteWater Transport Services) Environmental Industries First Lien Debt Variable Index Spread (S + 4.00%) Variable Index Floor (1.00%) Rate Cash 9.66% Rate PIK 0.00% Investment date 6/28/2021 Maturity 6/28/20262023-01-012023-12-310001513363fdus:PfanstiehlIncMember2023-12-310001513363us-gaap:EquitySecuritiesMember2022-01-012022-12-310001513363Non-control/Non-affiliate Investments R1 Holdings, LLC (dba RoadOne IntermodaLogistics) Transportation services2023-12-310001513363fdus:RaymondJamesAndAssociatesIncAndRobertWBairdAndCoMemberus-gaap:CommonStockMember2022-10-012022-12-310001513363Non-control/Non-affiliate Investments Bad Boy Mowers JV Acquisition, LLC Consumer Products2023-12-310001513363Non-control/Non-affiliate Investments Auto CRM LLC (dba Dealer Holdings) Information Technology Services First Lien Debt Variable Index Spread (P + 5.50%) Variable Index Floor (3.25%) Rate Cash 14.00% Rate PIK 0.85% Investment date 10/1/2021 Maturity 10/1/20262023-01-012023-12-310001513363fdus:EquityInvestmentMemberus-gaap:FairValueInputsLevel3Member2022-12-310001513363us-gaap:LineOfCreditMember2022-12-310001513363fdus:DividendOneMember2022-08-010001513363Affiliate Investments Spectra A&D Acquisition, Inc. (fka FDS Avionics Corp.) Aerospace & Defense Manufacturing Common Equity (4,663 units) Investment date 9/16/20222023-12-310001513363Control Investments US GreenFiber LLC Building Products Manufacturing Second Lien Debt Rate Cash 10.00% Rate PIK 3.00% Investment date 7/3/2014 Maturity 8/30/20242022-12-310001513363Non-control/Non-affiliate Investments Micronics Filtration Holdings, Inc. (dba Micronics Engineered Filtration Group, Inc.) Component Manufacturing Common Equity (14,400 units) Investment date 2/17/20222022-01-012022-12-310001513363us-gaap:LineOfCreditMember2021-12-310001513363us-gaap:AdditionalPaidInCapitalMember2021-12-310001513363us-gaap:CommonStockMember2023-08-110001513363Non-control/Non-affiliate Investments Level Education Group, LLC (dba CE4Less) Business Services Common Equity (1,000,000 units) Investment date 4/1/20212023-12-310001513363fdus:FirstLienDebtMemberfdus:HallmarkHealthCareSolutionsIncMemberfdus:HealthcareServicesMemberfdus:NonControlOrNonAffiliateInvestmentsMember2022-12-310001513363Control Investments US GreenFiber LLC Building Products Manufacturing Common Equity (2,522 units) Investment Date 7/3/20142022-01-012022-12-310001513363Non-control/Non-affiliate Investments Wonderware Holdings, LLC (dba CORE Business Technologies) Industry Information Technology Services First Lien Debt Variable Index Spread (S + 7.00%) Variable Index Floor (1.00%) Rate Cash 12.59% Rate PIK 0.00% Investment date 2/10/2021 Maturity 2/9/20262023-01-012023-12-310001513363fdus:DividendTwoMember2022-08-010001513363Non-control/Non-affiliate Investments CIH Intermediate, LLC Business Services2023-12-310001513363Control Investments US GreenFiber LLC Building Products Manufacturing Second Lien Debt Rate Cash 10.00% Rate PIK 3.00% Investment date 7/3/2014 Maturity 8/30/20242022-01-012022-12-310001513363Non-control/Non-affiliate Investments Power Grid Components, Inc.2022-12-310001513363fdus:SupplementalDividendMember2022-11-032022-11-030001513363Non-control/Non-affiliate Investments Pinnergy, Ltd. Oil & Gas Services Subordinated Rate Cash 9.00% Rate PIK 0.00% Investment date 6/30/2022 Maturity 6/30/20272023-01-012023-12-310001513363Non-control/Non-affiliate Investments CIH Intermediate, LLC Business Services Common Equity (563 shares) Investment date 3/3/20222023-12-310001513363Non-control/Non-affiliate Investments Cardback Intermediate, LLC (dba Chargeback Gurus) Information Technology Services Common Equity (495 shares) Investment date 8/10/20212023-01-012023-12-310001513363fdus:BpThriftBuyerLlcMemberfdus:FirstLienDebtMemberfdus:RetailSectorsMemberfdus:NonControlOrNonAffiliateInvestmentsMember2023-12-310001513363fdus:SuitedConnectorLlcMemberus-gaap:EstimateOfFairValueFairValueDisclosureMember2023-12-310001513363fdus:ValuationTechniqueEnterpriseValueMemberus-gaap:FairValueInputsLevel3Memberus-gaap:MeasurementInputRevenueMultipleMembersrt:MinimumMember2022-12-310001513363Non-control/Non-affiliate Investments AmeriWater LLC Component Manufacturing First Lien Debt Variable Index Spread (S + 6.25%) Variable Index Floor (1.00%) Rate Cash 11.60% Rate PIK 0.00% Investment date 7/8/2022 Maturity 7/8/20272023-12-3100015133632022-03-310001513363fdus:ValuationTechniqueEnterpriseValueMemberus-gaap:FairValueInputsLevel3Memberus-gaap:MeasurementInputRevenueMultipleMember2023-12-310001513363Non-control/Non-affiliate Investments American AllWaste LLC (dba WasteWater Transport Services) Environmental Industries First Lien Debt Variable Index Spread (L +6.15%) Variable Index Floor (1.00%) Rate Cash 9.82% Rate PIK 0.00% Investment date 6/28/2021 Maturity 6/28/20262022-01-012022-12-310001513363Non-control/Non-affiliate Investments Diversified Search LLC Business Services First Lien Debt Variable Index Spread Variable Index Spread (S +6.50%) Variable Index Floor (1.00%) Cash 10.32% Rate PIK 0.00% Investment date 2/7/2019 Maturity 2/7/20252023-12-310001513363Non-control/Non-affiliate Investments Prime AE Group, Inc. Business Services Preferred Equity (900,000 shares) Investment date 11/25/20192023-12-310001513363fdus:OnePointThreeNineEightPercentInterestRateMember2023-12-310001513363Non-control/Non-affiliate Investments CIH Intermediate, LLC Business Services Subordinated Debt Variable Index Spread Rate Cash 10.00% Rate PIK 1.00% Investment date 3/3/2022 Maturity 3/3/20282022-01-012022-12-310001513363fdus:HilcoPlasticsHoldingsLlcMemberfdus:ControlInvestmentsMember2022-01-012022-12-310001513363Affiliate Investments Steward Holding LLC (dba Steward Advanced Materials) Aerospace & Defense Manufacturing Common Equity (1,000,000 units) Investment Date 11/12/20152022-12-310001513363Non-control/Non-affiliate Investments AmeriWater LLC Component Manufacturing Subordinated Debt Cash 7.00% Rate PIK 7.00% Investment date 7/8/2022 Maturity 1/8/20282023-12-310001513363fdus:BorrowMoneyAndInFutureIssueAdditionalSeniorSecuritiesMayIncreaseRiskOfInvestingInCompanyMember2023-01-012023-12-310001513363Money Market Funds2023-12-310001513363Non-control/Non-affiliate Investments BP Thrift Buyer, LLC (dba myUnique and Ecothrift) Retail2023-12-310001513363fdus:AtTheMarketOfferingProgramMember2011-06-012023-12-310001513363Non-control/Non-affiliate Investments Choice Technology Solutions, LLC (dba Choice Merchant Solutions, LLC) Information Technology Services First Lien Debt Variable Index Spread Variable Index Spread (S +7.25%) Variable Index Floor (1.00%) Rate Cash 11.06% Rate PIK 0.00% Investment date 4/1/2022 Maturity 4/1/20272022-12-310001513363Non-control/Non-affiliate Investments Ipro Tech, LLC Information Technology Services2022-12-310001513363Non-control/Non-affiliate Investments NWS Technologies, LLC Utilities: Services First Lien Debt Variable Index Spread (S+8.00%) Variable Index Floor (2.50%) Rate Cash 13.39% Rate PIK 0.00% Investment date 6/20/2023 Maturity 6/16/20282023-12-310001513363Non-control/Non-affiliate Investments United Biologics, LLC.2023-12-310001513363Non-control/Non-affiliate Investments Cardback Intermediate, LLC (dba Chargeback Gurus) Information Technology Services First Lien Debt Variable Index Spread Variable Index Spread (L +6.50%) Variable Index Floor (0.75%) Rate Cash 10.24% Rate PIK 0.00% Investment date 0810/2021 Maturity 8/10/20262022-12-310001513363Non-control/Non-affiliate Investments Westerns Smokehouse, LLC Delayed Draw Commitment ($2,702 unfunded commitment) Consumer Products Variable Index Spread/Floor(S + 5.00%)/(1.50%) Rate Cash /PIK 9.71%/ 0.00% Investment date 6/29/2022 Maturity 12/23/20242022-12-310001513363Non-control/Non-affiliate Investments Acendre Midco Inc Information Technology Services First Lien Debt Variable Index Spread (S +7.75%) Variable Index Floor (0.50%) Rate Cash 12.30% Rate PIK 0.00% Investment date 10/6/2021 Maturity 10/6/2026 One2022-01-012022-12-310001513363fdus:FirstLienDebtMemberfdus:NonControlOrNonAffiliateInvestmentsMemberfdus:ComponentManufacturingMemberfdus:MicronicsFiltrationHoldingsIncDbaMicronicsEngineeredFiltrationGroupIncMember2022-12-310001513363Non-control/Non-affiliate Investments White Label Communication, LLC Industry Information Technology Services First Lien Debt Variable Index Spread (S + 6.25%) Variable Index Floor (1.00%) Rate Cash 11.66% Rate PIK 0.00% Investment date 10/11/2023 Maturity 10/11/20292023-01-012023-12-310001513363srt:MaximumMemberus-gaap:MeasurementInputEbitdaMultipleMemberfdus:ValuationTechniqueEnterpriseValueMemberus-gaap:FairValueInputsLevel3Memberus-gaap:SubordinatedDebtMember2023-12-310001513363fdus:FivePointSevenThreeFivePercentInterestRateMember2022-01-012022-12-310001513363Non-control/Non-affiliate Investments Sonicwall US Holdings, Inc. Information Technology Services Second Lien Debt Variable Index Spread / Floor (S + 7.50%) / (0.00%) Rate Cash/PIK 13.01%/0.00% Investment date 9/6/2022 Maturity 5/18/20262023-12-310001513363Non-control/Non-affiliate Investments Tiger Calcium Services Inc. Transportation services Second Lien Debt Rate Cash 12.50% Rate PIK 0.00% Investment date 12/21/2022 Maturity 5/31/20252023-12-310001513363fdus:SecuredBorrowingsMember2021-12-310001513363Non-control/Non-affiliate Investments 2KDirect Inc (dba iPromote) Information Technology Services2023-12-310001513363fdus:SupplementalDividendMember2022-02-150001513363fdus:FivePointEightSixOnePercentInterestRateTwoMember2023-12-310001513363Non-control/Non-affiliate Investments Virginia Tile Company, LLC Industry Specialty Distribution Common Equity (17 units) Investment date 12/19/20142023-12-310001513363fdus:FivePointThreeFourOnePercentInterestRateThreeMember2023-12-310001513363Non-control/Non-affiliate Investments R1 Holdings, LLC (dba RoadOne IntermodaLogistics) Transportation services First Lien Debt ($2,489 unfunded commitment) Variable Index Spread / Floor (S + 6.25%) / (1.00%) Rate Cash/PIK 10.83%/0.00% Investment date 12/30/2022 Maturity 12/30/20282022-01-012022-12-310001513363Non-control/Non-affiliate Investments American AllWaste LLC (dba WasteWater Transport Services) Environmental Industries First Lien Debt Variable Index Spread (L +3.75%) Variable Index Floor (1.00%) Rate Cash 7.42% Rate PIK 0.00% Investment date 6/28/2021 Maturity 6/28/20262022-01-012022-12-310001513363Non-control/Non-affiliate Investments American AllWaste LLC (dba WasteWater Transport Services) Environmental Industries Preferred Equity (74 units) Investment Date 12/29/20212023-12-310001513363Non-control/Non-affiliate Investments Hub Acquisition Sub, LLC (dba Hub Pen) Promotional products Second Lien Debt Cash 12.50% Rate PIK 1.00% Investment date 4/25/2023 Maturity 6/30/20282023-12-310001513363fdus:FivePointThreeFourOnePercentInterestRateMember2022-12-310001513363Affiliate Investments Applegate Greenfiber Intermediate Inc ( fka US GreenFiber LLC) Building Products Manufacturing Subordinated Debt Rate Cash 10.00% Rate PIK 0.00% Investment date 12/31/2021 Maturity 12/31/20272023-01-012023-12-310001513363Non-control/Non-affiliate Investments Choice Technology Solutions, LLC (dba Choice Merchant Solutions, LLC) Information Technology Services Revolving Loan ($1,000 unfunded commitment) Variable Index Spread (S +6.25%) Variable Index Floor (1.00%) Rate Cash 10.06% Rate PIK 0.00% Investment date 4/1/2022 Maturity 4/1/20272022-12-310001513363Non-control/Non-affiliate Investments Level Education Group, LLC (dba CE4Less) Business Services2022-12-310001513363Non-control/Non-affiliate Investments Power Grid Components, Inc. Specialty Distribution Preferred Equity (48 shares) Investment date 12/2/20192022-01-012022-12-310001513363Non-control/Non-affiliate Investments R1 Holdings, LLC (dba RoadOne IntermodaLogistics) Transportation services Subordinated Debt ($417 unfunded commitment) Rate Cash/PIK 8.75%/5.00% Investment date 12/30/2022 Maturity 6/30/20292023-01-012023-12-310001513363fdus:RestaurantsMemberfdus:CommonAndPreferredEquityUnitsMemberfdus:BurgerfiInternationalLlcMemberfdus:NonControlOrNonAffiliateInvestmentsMember2023-12-310001513363Non-control/Non-affiliate Investments Aldinger Company Business Services Preferred Equity (7,883 units) Investment Date 6/30/20232023-01-012023-12-310001513363Non-control/Non-affiliate Investments Applied Data Corporation Information Technology Services Common Equity Investment date 11/6/20202022-12-310001513363fdus:SubjectToUSFederalIncomeTaxAtCorporateRatesMember2023-01-012023-12-310001513363fdus:SmallBusinessAdministrationDebenturesMember2017-01-012017-12-310001513363Non-control/Non-affiliate Investments MDME Holding Corp. Healthcare Products2023-12-310001513363Control Investments US GreenFiber LLC Building Products Manufacturing Common Equity (1,022,813 units) Investment Date 7/1/20202022-12-310001513363Non-control/Non-affiliate Investments LifeSpan Biosciences, Inc. Healthcare Products Common Equity (100 shares) Investment date 3/19/20212022-01-012022-12-310001513363Non-control/Non-affiliate Investments Choice Technology Solutions, LLC (dba Choice Merchant Solutions, LLC) Information Technology Services Preferred Equity (500,000 units) Investment date 8/21/20232023-12-310001513363fdus:GeneralInreaseInInterestRatesMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments OnePath Systems, LLC Information Technology Services Common Equity (732,542 shares) Investment date 9/30/20222022-12-310001513363Non-control/Non-affiliate Investments CRS Solutions Holdings, LLC (dba CRS Texas) Business Services Common Equity Investment date 6/28/20222022-12-310001513363Non-control/Non-affiliate Investments IBH Holdings, LLC (fka Inflexxion, Inc.) Business Services Common Equity (150,000 units) Investment date 6/20/20182022-01-012022-12-310001513363Non-control/Non-affiliate Investments Acendre Midco Inc Information Technology Services First Lien Debt Variable Index Spread (S +7.75%) Variable Index Floor (0.50%) Rate Cash 12.30% Rate PIK 0.00% Investment date 10/6/2021 Maturity 10/6/2026 Two2022-01-012022-12-310001513363Non-control/Non-affiliate Investments Healthfuse, LLC Healthcare Services Preferred Equity Investment date 11/13/20202022-01-012022-12-310001513363Non-control/Non-affiliate Investments Detechtion Holdings, LLC Information Technology Services Subordinated Debt Rate Cash 0.00% Rate PIK 14.00% Investment date 6/21/2023 Maturity 6/21/20282023-01-012023-12-310001513363Non-control/Non-affiliate Investments R1 Holdings, LLC (dba RoadOne IntermodaLogistics) Transportation services First Lien Debt ($1,596 unfunded commitment) Variable Index Spread / Floor (S + 6.25%) / (1.00%) Rate Cash/PIK 11.72%/0.00% Investment date 12/30/2022 Maturity 12/30/20282023-12-310001513363Non-control/Non-affiliate Investments USG AS Holdings, LLC Industry Utilities: Services Common Equity (Units N/A) Investment date 2/21/2023 2023-12-310001513363fdus:SupplementalDividendMember2023-10-302023-10-300001513363Non-control/Non-affiliate Investments Aeronix Inc Aerospace & Defense Manufacturing Common Equity (549 units) Investment Date 6/11/20212022-12-310001513363fdus:FivePointFourThreeNinePercentInterestRateOneMember2023-12-310001513363us-gaap:LineOfCreditMember2017-01-012017-12-310001513363Affiliate Investments Medsurant Holding LLC Healthcare Services Preferred Equity (84,997 units) Investment date 4/12/20112022-01-012022-12-310001513363us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:SubordinatedDebtMember2023-01-012023-12-310001513363fdus:R1HoldingsLlcDbaRoadoneIntermodalogisticsCommonEquityMember2022-12-310001513363fdus:SixPointZeroZeroZeroPercentNotesDueTwoThousandTwentyFourMember2021-02-162021-02-160001513363Non-control/Non-affiliate Investments Micronics Filtration Holdings, Inc. (dba Micronics Engineered Filtration Group, Inc.) Component Manufacturing Common Equity (14,400 units) Investment date 2/17/20222022-12-310001513363fdus:FirstLienDebtMemberus-gaap:SubsequentEventMemberfdus:ProfessionalFoodServiceSalesAndMarketingServiceMember2024-02-230001513363fdus:SpecialDividendMember2023-02-150001513363Non-control/Non-affiliate Investments ISI PSG Holdings, LLC (dba Incentive Solutions, Inc.) Business Services First Lien Debt Variable Index Spread (L +7.50%) Variable Index Floor (0.50%) Rate Cash 11.17% Rate PIK 0.00% Investment date 4/5/2021 Maturity 4/5/20262022-12-310001513363srt:MinimumMember2022-12-310001513363fdus:AffiliateInvestmentMembersrt:MaximumMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments Magenta Buyer LLC (dba Trellix) Information Technology Services Second Lien Debt Variable Index Spread (S+8.25%) Variable Index Floor (0.75%) Rate Cash 13.89% Rate PIK 0.00% Investment date 7/19/2022 Maturity 7/27/20292023-01-012023-12-310001513363Non-control/Non-affiliate Investments Combined Systems, Inc. Aerospace & Defense Manufacturing Revolving Loan ($162 unfunded commitment) Variable Index Spread (L +10.00%) Variable Index Floor (2.00%) Rate Cash 16.74% Rate PIK 0.00% Investment date 1/31/2020 Maturity 1/31/20252022-01-012022-12-310001513363Non-control/Non-affiliate Investments Allredi LLC (fka Macro Group International OpCo. LLC) Industrial Cleaning & Coatings2023-12-310001513363fdus:SixPointZeroZeroNinePercentInterestRateMemberfdus:SmallBusinessAdministrationDebenturesMembersrt:ScenarioForecastMember2024-03-310001513363fdus:AffiliateInvestmentsMemberfdus:StewardHoldingLlcMember2023-01-012023-12-310001513363fdus:OnePointThreeNineEightPercentInterestRateMember2022-12-310001513363us-gaap:RevolvingCreditFacilityMemberfdus:IngCapitalLimitedLiabilityCompanyMemberfdus:SeniorSecuredRevolvingCreditAgreementMember2022-08-172022-08-170001513363fdus:SupplementalDividendMember2021-05-032021-05-030001513363fdus:AffiliateInvestmentsMemberfdus:MedsurantHoldingsLlcMember2021-12-310001513363Non-control/Non-affiliate Investments LifeSpan Biosciences, Inc. Healthcare Products Subordinated Debt Rate Cash 11.50% Rate PIK 0.00% Investment date 3/19/2021 Maturity 9/19/20262022-12-310001513363Non-control/Non-affiliate Investments Ameriwater LLC Component Manufacturing Common Equity (1,000 units) Investment date 7/8/20222022-12-310001513363Non-control/Non-affiliate Investments Green Cubes Technology, LLC (dba Green Cubes) Information Technology Services First Lien Debt Variable Index Spread (S +13.00%) Variable Index Floor (0.00%) Rate Cash 18.53% Rate PIK 0.00% Investment date 12/17/2021 Maturity 12/17/20242023-12-310001513363fdus:SupplementalDividendMember2021-08-022021-08-020001513363fdus:AbilityToInvolvingDerivativesAndUnfundedCommitmentTransactionsMayBeLimitedMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments Power Grid Components, Inc. Specialty Distribution Preferred Equity (392 shares) Investment date 4/12/20182022-12-310001513363Non-control/Non-affiliate Investments Prime AE Group, Inc. Business Services First Lien Debt Variable Index Spread / Floor (S + 6.75%) / (2.00%) Rate Cash/PIK 11.59%/0.00% Investment date 11/25/2019 Maturity 11/25/20242022-12-310001513363fdus:QuarterlyDividendMemberus-gaap:SubsequentEventMember2024-02-130001513363Non-control/Non-affiliate Investments Cardboard Box LLC (dba Anthonys Coal Fired Pizza) Restaurants Common Equity (14,201 units) Investment date 11/3/20222022-01-012022-12-3100015133632023-07-012023-09-300001513363fdus:IsiPsgHoldingsLlcMemberfdus:FirstLienDebtMemberfdus:BusinessServicesMemberfdus:NonControlOrNonAffiliateInvestmentsMember2022-12-310001513363Non-control/Non-affiliate Investments Comply365, LLC Aerospace & Defense Manufacturing Common Equity ( 868,922 units) Investment date 12/22/20232023-12-310001513363srt:MaximumMemberfdus:SmallBusinessAdministrationDebenturesMemberus-gaap:SubsequentEventMember2024-02-282024-02-280001513363Non-control/Non-affiliate Investments American AllWaste LLC (dba WasteWater Transport Services) Environmental Industries Preferred Equity (500 units) Investment Date 5/31/20182023-01-012023-12-310001513363fdus:AtTheMarketOfferingProgramMemberus-gaap:CommonStockMember2011-06-012023-12-310001513363us-gaap:InvestmentAffiliatedIssuerControlledMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments Choice Technology Solutions, LLC (dba Choice Merchant Solutions, LLC) Information Technology Services First Lien Debt Variable Index Spread Variable Index Spread (S +7.25%) Variable Index Floor (1.00%) Rate Cash 11.06% Rate PIK 0.00% Investment date 4/1/2022 Maturity 4/1/20272022-01-012022-12-310001513363fdus:PortfolioCompaniesMayIncurDebtThatRanksEquallyWithOrSeniorMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments Tedia Company, LLC.2022-12-310001513363Non-control/Non-affiliate Investments R1 Holdings, LLC (dba RoadOne IntermodaLogistics)2022-12-310001513363Non-control/Non-affiliate Investments R1 Holdings, LLC (dba RoadOne IntermodaLogistics) First Lien Debt ($2,489 unfunded commitment) Industry Transportation services Variable Index Spread / Floor (S + 6.25%) / (1.00%) Rate Cash/PIK 10.83%/0.00% Investment date 12/30/2022 Maturity 12/30/20282022-12-310001513363Non-control/Non-affiliate Investments Tedia Company, LLC Healthcare Products2023-12-310001513363fdus:November2024NotesMember2019-01-012019-12-310001513363Non-control/Non-affiliate Investments Pool & Electrical Products, LLC Specialty Distribution Common Equity (15,000 units) Investment date 10/28/20202022-01-012022-12-310001513363Affiliate Investments Spectra A&D Acquisition Inc (fka FDS Avionics Corp) Aerospace & Defense Manufacturing Common Equity (12,035 units) Investment date 8/25/20212023-12-310001513363Non-control/Non-affiliate Investments United Biologics, LLC. Industry Healthcare Services Warrant (57,469 units) Investment date 3/5/20122022-01-012022-12-310001513363Non-control/Non-affiliate Investments MBS Opco, LLC (dba Marketron) Information Technology Services First Lien Debt Variable Index Spread (S+8.50%) Variable Index Floor (1.50%) Rate Cash 14.16% Rate PIK 0.00% Investment date 9/29/2022 Maturity 9/28/20262023-01-012023-12-310001513363fdus:FourPointSevenFivePercentNotesDueTwoThousandTwentySixMember2022-12-310001513363fdus:PayDividendsInOwnStockMayRequiredToPayTaxInExcessOfCashMember2023-01-012023-12-310001513363srt:MaximumMemberfdus:ValuationTechniqueEnterpriseValueMemberus-gaap:FairValueInputsLevel3Memberfdus:MeasurementInputAssetCoverageMemberfdus:FirstLienDebtMember2023-12-310001513363Non-control/Non-affiliate Investments Netbase Solutions, Inc. (dba Netbase Quid) Information Technology Services First Lien Debt Variable Index Spread (P+4.00%) Variable Index Floor (3.25%) Rate Cash 12.50% Rate PIK 0.00% Investment date 11/18/2021 Maturity 11/18/20252023-12-310001513363fdus:FivePointFourThreeNinePercentInterestRateTwoMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments Combined Systems, Inc. Aerospace & Defense Manufacturing First Lien Debt Variable Index Spread Rate Variable Index Spread Variable Index Spread (L +11.00%) Variable Index Floor (2.00%) Cash 17.74% Rate PIK 0.00% Investment date 1/31/2020 Maturity 1/31/20252022-12-310001513363fdus:DividendReinvestmentPlanMember2023-01-012023-12-310001513363country:CA2022-01-012022-12-310001513363us-gaap:MeasurementInputEbitdaMultipleMemberfdus:ValuationTechniqueEnterpriseValueMemberus-gaap:FairValueInputsLevel3Member2023-12-310001513363fdus:FivePointFourThreeNinePercentInterestRateTwoMember2022-12-310001513363fdus:ValuationTechniqueEnterpriseValueMemberus-gaap:FairValueInputsLevel3Memberfdus:MeasurementInputAssetCoverageMemberfdus:FirstLienDebtMembersrt:WeightedAverageMember2023-12-310001513363Non-control/Non-affiliate Investments LifeSpan Biosciences, Inc. Healthcare Products Subordinated Debt Rate Cash 11.50% Rate PIK 0.00% Investment date 3/19/2021 Maturity 9/19/20262022-01-012022-12-310001513363Non-control/Non-affiliate Investments Mobilewalla, Inc. Information Technology Services First Lien Debt Variable Index Spread (L +11.50%) Variable Index Floor (0.50%) Rate Cash 16.26% Rate PIK 0.00% Investment date 12/17/2021 Maturity 12/17/20242022-01-012022-12-310001513363srt:MinimumMemberfdus:November2026NotesMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments CTM Group, Inc. Business Services2023-12-310001513363fdus:FivePointThreeFourOnePercentInterestRateOneMember2022-12-310001513363us-gaap:WarrantMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2023-12-310001513363Non-control/Non-affiliate Investments American AllWaste LLC (dba WasteWater Transport Services) Environmental Industries First Lien Debt Variable Index Spread (L +3.75%) Variable Index Floor (1.00%) Rate Cash 7.42% Rate PIK 0.00% Investment date 6/28/2021 Maturity 6/28/20262022-12-310001513363Affiliate Investments Spectra A&D Acquisition, Inc. (fka FDS Avionics Corp.) Aerospace & Defense Manufacturing Common Equity (6,783 units) Investment date 07/10/20232023-01-012023-12-310001513363us-gaap:ValuationTechniqueDiscountedCashFlowMemberus-gaap:FairValueInputsLevel3Memberfdus:SecondLienDebtMembersrt:WeightedAverageMemberfdus:MeasurementInputWeightedAverageCostOfCapitalMember2022-12-310001513363Non-control/Non-affiliate Investments MDME Holding Corp. Healthcare Products Common Equity (4,735 units) Investment date 9/18/20232023-01-012023-12-310001513363fdus:DividendReinvestmentPlanMember2023-07-012023-09-300001513363Non-control/Non-affiliate Investments LifeSpan Biosciences, Inc. Healthcare Products2023-12-310001513363Non-control/Non-affiliate Investments Quest Software US Holdings Inc. Information Technology Services Second Lien Debt Variable Index Spread / Floor (S + 7.50%) / (0.50%) Rate Cash/PIK 13.03%/0.00% Investment date 3/1/2022 Maturity 2/1/20302023-01-012023-12-310001513363Non-control/Non-affiliate Investments Magenta Buyer LLC (dba Trellix) Information Technology Services Second Lien Debt Variable Index Spread (S+8.25%) Variable Index Floor (0.75%) Rate Cash 13.89% Rate PIK 0.00% Investment date 7/19/2022 Maturity 7/27/20292023-12-310001513363us-gaap:ValuationTechniqueDiscountedCashFlowMemberus-gaap:FairValueInputsLevel3Membersrt:MinimumMemberus-gaap:SubordinatedDebtMemberfdus:MeasurementInputWeightedAverageCostOfCapitalMember2022-12-310001513363Non-control/Non-affiliate Investments Global Plasma Solutions, Inc. Component Manufacturing Common Equity (947 shares) Investment date 9/21/20182023-12-310001513363fdus:EquityInvestmentMemberus-gaap:FairValueInputsLevel3Member2023-12-310001513363fdus:TediaCompanyLlcDelayedDrawTermLoanMember2022-12-310001513363fdus:SuitedConnectorLlcMemberus-gaap:CarryingReportedAmountFairValueDisclosureMember2023-12-310001513363fdus:FivePointThreeFourOnePercentInterestRateOneMember2023-01-012023-12-310001513363Affiliate Investments Spectra A&D Acquisition Inc (fka FDS Avionics Corp) Aerospace & Defense Manufacturing2023-12-310001513363fdus:AcendreMidcoIncRevolvingLoanMember2023-12-310001513363fdus:IsiPsgHoldingsLlcMemberfdus:FirstLienDebtMemberfdus:BusinessServicesMemberfdus:NonControlOrNonAffiliateInvestmentsMember2023-12-310001513363us-gaap:ValuationTechniqueDiscountedCashFlowMemberus-gaap:FairValueInputsLevel3Memberus-gaap:SubordinatedDebtMemberfdus:MeasurementInputWeightedAverageCostOfCapitalMembersrt:WeightedAverageMember2023-12-310001513363Non-control/Non-affiliate Investments Global Plasma Solutions, Inc. Component Manufacturing Common Equity (947 shares) Investment date 9/21/20182022-01-012022-12-310001513363Non-control/Non-affiliate Investments Ameriwater LLC Component Manufacturing Common Equity (1,000 units) Investment date 7/8/20222023-01-012023-12-310001513363Non-control/Non-affiliate Investments Cardback Intermediate, LLC (dba Chargeback Gurus) Information Technology Services2022-12-310001513363fdus:TwentyTwentyThreeNotesMember2018-02-222018-02-220001513363Non-control/Non-affiliate Investments Worldwide Express Operations, LLC Industry Transportation services Common Equity (752,380 units) Investment date 7/26/20212023-01-012023-12-310001513363fdus:UnitedStatesNortheastMember2022-12-310001513363Non-control/Non-affiliate Investments Hub Acquisition Sub, LLC (dba Hub Pen) Promotional products Common Equity (3,750 units) Investment date 3/23/20162022-12-310001513363Affiliate Investments Medsurant Holdings LLC Healthcare Services Warrant (252,588 units) Investment date 4/12/20112023-01-012023-12-310001513363fdus:AppliedDataCorporationMemberus-gaap:SubsequentEventMemberfdus:CommonAndPreferredEquityInvestmentsMember2024-01-082024-01-080001513363us-gaap:FairValueInputsLevel3Memberfdus:FirstLienDebtMember2023-12-310001513363Non-control/Non-affiliate Investments Hallmark Health Care Solutions, Inc. Healthcare Services Common Equity (750,000 units) Investment date 12/4/20202022-01-012022-12-310001513363Affiliate Investments Spectra A&D Acquisition Inc (fka FDS Avionics Corp) Aerospace & Defense Manufacturing2022-12-310001513363Non-control/Non-affiliate Investments Tedia Company, LLC Healthcare Products Preferred Equity (Series A) (1,000 units) Investment date 03/04/20222022-01-012022-12-310001513363Non-control/Non-affiliate Investments Tedia Company, LLC Healthcare Products Preferred Equity (Series A) (1,000 units) Investment date 03/04/20222022-12-310001513363Non-control/Non-affiliate Investments American AllWaste LLC (dba WasteWater Transport Services) Environmental Industries First Lien Debt Variable Index Spread (S + 4.00%) Variable Index Floor (1.00%) Rate Cash 9.66% Rate PIK 0.00% Investment date 6/28/2021 Maturity 6/28/20262023-12-310001513363fdus:AtTheMarketOfferingProgramMemberus-gaap:SubsequentEventMember2024-01-012024-02-280001513363fdus:CommonEquityMemberus-gaap:SubsequentEventMemberfdus:ProfessionalFoodServiceSalesAndMarketingServiceMember2024-02-230001513363us-gaap:ValuationTechniqueDiscountedCashFlowMemberus-gaap:FairValueInputsLevel3Memberfdus:SecondLienDebtMemberfdus:MeasurementInputWeightedAverageCostOfCapitalMember2022-12-3100015133632023-09-300001513363Non-control/Non-affiliate Investments Zonkd, LLC Industry Component Manufacturing Common Equity (4,987 units) Investment date 3/18/20222023-01-012023-12-310001513363Non-control/Non-affiliate Investments Zonkd, LLC Industry Component Manufacturing First Lien Debt Variable Index Spread (L + 10.00%) Variable Index Floor (1.00%) Rate Cash 15.76% Rate PIK 0.00% Investment date 3/18/2022 Maturity 3/18/20272022-01-012022-12-310001513363fdus:ValuationTechniqueEnterpriseValueMemberus-gaap:FairValueInputsLevel3Memberfdus:MeasurementInputAssetCoverageMemberfdus:FirstLienDebtMembersrt:WeightedAverageMember2022-12-310001513363fdus:FivePointFourThreeNinePercentInterestRateTwoMember2023-12-310001513363Non-control/Non-affiliate Investments 2KDirect, Inc. (dba iPromote) Information Technology Services First Lien Debt Variable Index Spread (S+7.25%) Variable Index Floor (0.50%) Rate Cash 12.80% Rate PIK 0.00% Investment date 6/25/2021 Maturity 6/25/20262023-12-310001513363Non-control/Non-affiliate Investments American AllWaste LLC (dba WasteWater Transport Services) Environmental Industries2023-12-310001513363fdus:FivePointThreeSevenFivePercentNotesDueTwoThousandTwentyFourMember2021-11-022021-11-020001513363fdus:AmericanAllwasteLlcMemberfdus:FirstLienDebtMemberfdus:NonControlOrNonAffiliateInvestmentsMemberfdus:EnvironmentalIndustriesMember2023-12-310001513363fdus:CurrentTaxLiabilityOnDistributionsElectToReinvestCommonStockMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments 301 Edison Holdings Inc. (dba LGG Industrial) Specialty Distribution2023-12-3100015133632011-06-202011-06-200001513363Affiliate Investments Spectra A&D Acquisition, Inc. (fka FDS Avionics Corp.) Aerospace & Defense Manufacturing First Lien Debt Variable Index Spread (S + 5.75%) Variable Index Floor(1.00%) Rate Cash 11.36% Rate PIK 0.00% Investment date 2/12/2021 Maturity 2/11/20262023-01-012023-12-310001513363fdus:EnvironmentalSocialAndGovernanceFactorsMember2023-01-012023-12-310001513363us-gaap:EquitySecuritiesMember2023-01-012023-12-310001513363Affiliate Investments Spectra A&D Acquisition Inc (fka FDS Avionics Corp) Aerospace & Defense Manufacturing Common Equity (12,035 units) Investment date 8/25/20212022-12-310001513363srt:MaximumMemberfdus:ValuationTechniqueEnterpriseValueMemberus-gaap:FairValueInputsLevel3Memberfdus:MeasurementInputAssetCoverageMemberfdus:SecondLienDebtMember2022-12-310001513363fdus:BankRelationshipsAndRecentStrainOnBankingSystemMember2023-01-012023-12-310001513363us-gaap:CommonStockMember2022-01-012022-12-310001513363fdus:FivePointFourthreeNinePercentInterestRateMember2022-12-310001513363fdus:NotesMember2020-12-310001513363Non-control/Non-affiliate Investments APM Intermediate Holdings, LLC (dba Artistic Paver Manufacturing, Inc. Building Products Manufacturing Common Equity (1,200 units) Investment date 11/8/20222022-12-310001513363fdus:FivePointThreeFourOnePercentInterestRateMember2023-12-310001513363Non-control/Non-affiliate Investments Choice Technology Solutions, LLC (dba Choice Merchant Solutions, LLC) Information Technology Services2023-12-310001513363us-gaap:InvestmentAffiliatedIssuerControlledMember2021-01-012021-12-310001513363us-gaap:FairValueInputsLevel3Memberfdus:SecondLienDebtMemberus-gaap:FairValueMeasurementsRecurringMember2022-01-012022-12-310001513363Non-control/Non-affiliate Investments R1 Holdings, LLC (dba RoadOne IntermodaLogistics) Transportation services Common Equity (280,000 units) ($70 unfunded commitment) Investment date 12/30/20222022-01-012022-12-310001513363Non-control/Non-affiliate Investments 301 Edison Holdings Inc. (dba LGG Industrial) Specialty Distribution Preferred Equity (519,244 units) Investment date 11/14/20232023-12-310001513363Non-control/Non-affiliate Investments ISI PSG Holdings, LLC (dba Incentive Solutions, Inc.) Business Services First Lien Debt Variable Index Spread (L +7.50%) Variable Index Floor (0.50%) Rate Cash 11.17% Rate PIK 0.00% Investment date 4/5/2021 Maturity 4/5/20262022-01-012022-12-310001513363fdus:SecuredBorrowingsMember2023-01-012023-12-310001513363us-gaap:SeniorNotesMember2022-12-310001513363Affiliate Investments Pfanstiehl Inc Health Products Subordinated Debt Rate Cash 10.00% Rate PIK 0.00% Investment date 8/2/2022 Maturity 8/2/20272022-01-012022-12-310001513363fdus:ValuationTechniqueEnterpriseValueMemberus-gaap:FairValueInputsLevel3Memberus-gaap:MeasurementInputRevenueMultipleMemberfdus:FirstLienDebtMember2022-12-310001513363Non-control/Non-affiliate Investments Ameriwater LLC Component Manufacturing Subordinated Debt Rate Cash 7.00% Rate PIK 7.00% Investment date 7/8/2022 Maturity 1/8/20282022-12-310001513363Non-control/Non-affiliate Investments Cardback Intermediate, LLC (dba Chargeback Gurus) Information Technology Services Preferred Equity (495 shares) Investment date 8/10/20212022-12-310001513363Non-control/Non-affiliate Investments Allredi LLC (fka Marco Group International OpCo, LLC) Industrial Cleaning & Coatings Second Lien Debt Rate Cash 5.00% Rate PIK 10.00% Investment date 3/2/2020 Maturity 9/2/20262023-12-310001513363Non-control/Non-affiliate Investments Hub Acquisition Sub, LLC (dba Hub Pen) Promotional products Second Lien Debt Cash 12.50% Rate PIK 1.00% Investment date 4/25/2023 Maturity 6/30/20282023-01-012023-12-310001513363Non-control/Non-affiliate Investments Hub Acquisition Sub, LLC (dba Hub Pen) Promotional products2023-12-310001513363Non-control/Non-affiliate Investments GP&C Operations, LLC (dba Garlock Printing and Converting) Component Manufacturing Common Equity (515,625 units) Investment date 1/22/20212023-12-310001513363Non-control/Non-affiliate Investments BP Thrift Buyer, LLC (dba myUnique and Ecothrift) Retail2022-12-310001513363Non-control/Non-affiliate Investments Tedia Company, LLC. Healthcare Products First Lien Debt Variable Index Spread (S + 7.75%) Variable Index Floor (1.00%) Rate Cash 13.41% Rate PIK 0.00% Investment date 3/4/2022 Maturity 3/4/20272023-12-310001513363Non-control/Non-affiliate Investments CRS Solutions Holdings, LLC (dba CRS Texas) Business Services Common Equity (574,929 units) Investment date 6/28/20222023-12-310001513363us-gaap:SeniorNotesMember2021-12-310001513363Non-control/Non-affiliate Investments Prime AE Group, Inc. Business Services2023-12-310001513363fdus:DividendReinvestmentPlanMember2021-10-012021-12-310001513363us-gaap:CarryingReportedAmountFairValueDisclosureMember2023-12-310001513363Non-control/Non-affiliate Investments LifeSpan Biosciences, Inc. Healthcare Products Subordinated Debt Rate Cash 11.50% Rate PIK 0.00% Investment date 3/19/2021 Maturity 9/19/20262023-01-012023-12-310001513363fdus:ControlInvestmentsMember2022-12-310001513363fdus:InformationTechnologyServicesMemberfdus:TwoKDirectIncMemberfdus:FirstLienDebtOneMemberfdus:NonControlOrNonAffiliateInvestmentsMember2023-12-310001513363Non-control/Non-affiliate Investments 2KDirect Inc (dba iPromote) Information Technology Services First Lien Debt Variable Index Spread (L +6.75%) Variable Index Floor (0.50%) Rate Cash 11.48% Rate PIK 0.00% Investment date 7/30/2021 Maturity 6/25/20262022-12-310001513363Non-control/Non-affiliate Investments American AllWaste LLC (dba WasteWater Transport Services) Environmental Industries Preferred Equity (74 units) Investment Date 12/29/20212023-01-012023-12-310001513363us-gaap:InvestmentAffiliatedIssuerMember2023-01-012023-12-310001513363us-gaap:RevolvingCreditFacilityMemberus-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberfdus:IngCapitalLimitedLiabilityCompanyMemberfdus:SeniorSecuredRevolvingCreditAgreementMember2022-08-170001513363Non-control/Non-affiliate Investments APM Intermediate Holdings, LLC (dba Artistic Paver Manufacturing, Inc.) Building Products Manufacturing First Lien Debt Variable Index Spread (S +7.00%) Variable Index Floor (2.00%) Rate Cash 11.21% Rate PIK 0.00% Investment date 11/8/2022 Maturity 11/8/20272022-12-310001513363fdus:FailureToManageBusinessAndFutureGrowthMaterialAdverseEffectOnBusinessFinancialConditionAndResultsOfOperationsMember2023-01-012023-12-310001513363fdus:AcendreMidcoIncRevolvingLoanMember2022-12-310001513363Non-control/Non-affiliate Investments Quest Software US Holdings Inc. Information Technology Services Second Lien Debt Variable Index Spread / Floor (S + 7.50%) / (0.50%) Rate Cash/PIK 13.03%/0.00% Investment date 3/1/2022 Maturity 2/1/20302023-12-310001513363fdus:ThreePointTwoSevenSevenPercentInterestRateMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments Tiger Calcium Services Inc. Industry Transportation services Second Lien Debt Rate Cash 12.50% Rate PIK 0.00% Investment date 12/21/2022 Maturity 5/31/20252022-12-310001513363Non-control/Non-affiliate Investments 2KDirect, Inc. (dba iPromote) Information Technology Services First Lien Debt Variable Index Spread (S+7.25%) Variable Index Floor (0.50%) Rate Cash 9.05% Rate PIK 0.00% Investment date 7/30/2021 Maturity 6/25/20262023-12-310001513363Non-control/Non-affiliate Investments PowerGrid Services Acquisition, LLC Utilities: Services Second Lien Debt Variable Index Spread (S +9.50%) Variable Index Floor (1.00%)Cash 14.23% Rate PIK 0.00% Investment date 9/21/2021 Maturity 3/21/20292022-12-310001513363Non-control/Non-affiliate Investments LifeSpan Biosciences, Inc. Healthcare Products2022-12-310001513363Non-control/Non-affiliate Investments American AllWaste LLC (dba WasteWater Transport Services) Environmental Industries First Lien Debt Variable Index Spread (S + 6.50%) Variable Index Floor (1.00%) Rate Cash 12.16% Rate PIK 0.00% Investment date 6/28/2021 Maturity 6/28/20262023-12-310001513363Non-control/Non-affiliate Investments Acendre Midco Inc Information Technology Services Preferred Equity (77,016 shares) Investment date 9/26/20222022-12-310001513363us-gaap:ValuationTechniqueDiscountedCashFlowMemberus-gaap:FairValueInputsLevel3Memberus-gaap:SubordinatedDebtMemberfdus:MeasurementInputWeightedAverageCostOfCapitalMember2022-12-310001513363fdus:AdministrationAgreementMember2022-01-012022-12-310001513363fdus:SupplementalDividendMember2021-08-020001513363Non-control/Non-affiliate Investments Cardback Intermediate, LLC (dba Chargeback Gurus) Information Technology Services Preferred Equity (495 shares) Investment date 8/10/20212023-12-310001513363Non-control/Non-affiliate Investments Rhino Assembly Company, LLC Specialty Distribution Common Equity (Class F Units) (710 units) Investment date 12/10/20202022-01-012022-12-310001513363Non-control/Non-affiliate Investments Haematologic Technologies, Inc. Healthcare Services Common Equity (630 units) Investment date 10/11/20192022-01-012022-12-310001513363Non-control/Non-affiliate Investments 2KDirect Inc (dba iPromote) Information Technology Services Common Equity (1,000,000 units) Investment date 6/25/20212023-01-012023-12-310001513363Non-control/Non-affiliate Investments Allredi LLC (fka Macro Group International OpCo. LLC) Industrial Cleaning & Coatings Common Equity (524,624 units) Investment date 8/3/20252023-12-310001513363us-gaap:RevolvingCreditFacilityMemberus-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberfdus:IngCapitalLimitedLiabilityCompanyMemberfdus:SeniorSecuredRevolvingCreditAgreementMember2020-06-260001513363Non-control/Non-affiliate Investments ISI PSG Holdings, LLC (dba Incentive Solutions, Inc.) Business Services First Lien Debt Variable Index Spread (S+7.50%) Variable Index Floor (0.50%) Rate Cash 13.00% Rate PIK 0.00% Investment date 4/5/2021 Maturity 4/5/20262023-01-012023-12-310001513363fdus:AffiliateInvestmentsMember2023-12-310001513363Non-control/Non-affiliate Investments Wonderware Holdings, LLC (dba CORE Business Technologies) Information Technology Services First Lien Debt Variable Index Spread (L + 7.25%) Variable Index Floor (1.00%) Rate Cash 11.97% Rate PIK 0.00% Investment date 2/10/2021 Maturity 2/9/20262022-01-012022-12-310001513363fdus:UnitedStatesMidwestMember2022-12-310001513363Non-control/Non-affiliate Investments BP Thrift Buyer, LLC (dba myUnique and Ecothrift) Retail First Lien Debt Variable Index Spread Variable Index Spread (S +5.75%) Variable Index Floor (1.50%) Rate Cash 9.31% Rate PIK 0.00% Investment date 9/13/2022 Maturity 9/13/20272022-01-012022-12-310001513363Non-control/Non-affiliate Investments White Label Communication, LLC Industry Information Technology Services Preferred Equity (5,000 units) Investment date 10/11/20232023-12-3100015133632019-12-310001513363Non-control/Non-affiliate Investments American AllWaste LLC (dba WasteWater Transport Services) Environmental Industries Preferred Equity (141 units) Investment Date 11/2/20202023-12-310001513363Non-control/Non-affiliate Investments Magenta Buyer LLC (dba Trellix) Information Technology Services Second Lien Debt Variable Index Spread (L +8.25%) Variable Index Floor (0.75%) Rate Cash 12.98% Rate PIK 0.00% Investment date 7/19/2022 Maturity 7/27/20292022-12-3100015133632021-01-012021-03-310001513363Non-control/Non-affiliate Investments APM Intermediate Holdings, LLC (dba Artistic Paver Manufacturing, Inc.) Building Products Manufacturing First Lien Debt Variable Index Spread (S + 7.00%) Variable Index Floor (2.00%) Rate Cash 12.39% Rate PIK 0.00% Investment date 11/8/2022 Maturity 11/8/20272023-12-310001513363fdus:SecuredBorrowingsMember2022-01-012022-12-310001513363fdus:ChangesInLawsOrRegulationsGoverningOperationsMember2023-01-012023-12-310001513363fdus:ManagementAndIncentiveFeeStructureForInvestmentAdvisorNotFullyAlignedWithStockholdersAndMayEncourageToMakeSpeculativeInvestmentMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments Suited Connector LLC Second Lien Debt Industry Information Technology Services Rate Cash/PIK 12.00%/0.00% Investment date 10/29/2021 Maturity 6/1/20282022-12-310001513363Non-control/Non-affiliate Investments Allredi LLC(fka Macro Group International OpCo. LLC) Industrial Cleaning & Coatings2022-12-310001513363Non-control/Non-affiliate Investments UBEO, LLC. Industry Business Services Common Equity (705,000 units) Investment date 4/3/20182022-01-012022-12-310001513363us-gaap:AccumulatedDistributionsInExcessOfNetIncomeMember2023-12-310001513363Non-control/Non-affiliate Investments Virtex Enterprises, LP Industry Component Manufacturing Second Lien Debt Variable Index Spread (S + 9.75%) Variable Index Floor (1.00%) Rate Cash 14.48% Rate PIK 0.00% Investment date 4/13/2022 Maturity 10/13/20272022-01-012022-12-310001513363Non-control/Non-affiliate Investments Acendre Midco Inc Information Technology Services Preferred Equity (77,016 shares) Investment date 9/26/20222022-01-012022-12-310001513363Affiliate Investments Spectra A&D Acquisition, Inc. (fka FDS Avionics Corp.) Aerospace & Defense Manufacturing Common Equity (38,493 units) Investment date 12/16/20222023-01-012023-12-310001513363fdus:AlternativeReferenceRatesReplacedLiborMember2023-01-012023-12-310001513363fdus:FirstLienDebtMemberfdus:GarlockPrintingAndConvertingOperationsLlcMemberfdus:NonControlOrNonAffiliateInvestmentsMemberfdus:ComponentManufacturingMember2022-12-310001513363us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberfdus:FirstLienDebtMember2022-01-012022-12-310001513363Non-control/Non-affiliate Investments Cardback Intermediate, LLC (dba Chargeback Gurus) Information Technology Services First Lien Debt Variable Index Spread (S+6.50%) Variable Index Floor (0.75%) Rate Cash 12.16% Rate PIK 0.00% Investment date 08/10/2021 Maturity 8/10/20262023-12-310001513363fdus:SupplementalDividendMember2022-05-020001513363fdus:InvestmentAdvisoryAgreementMember2021-01-012021-12-310001513363Non-control/Non-affiliate Investments Aldinger Company Business Services Common Equity (7,883 units) Investment Date 6/30/20232023-12-310001513363Non-control/Non-affiliate Investments Tedia Company, LLC Healthcare Products Subordinated Debt Cash 7.25% Rate PIK 7.25% Investment date 03/04/2022 Maturity 09/04/20272022-12-310001513363fdus:NewTaxLegislationMember2023-01-012023-12-310001513363us-gaap:InvestmentAffiliatedIssuerControlledMember2022-12-310001513363fdus:TwoPointThreeSevenSevenPercentInterestRateMember2023-12-310001513363us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:SubordinatedDebtMember2022-01-012022-12-310001513363Non-control/Non-affiliate Investments Choice Technology Solutions, LLC (dba Choice Merchant Solutions, LLC) Information Technology Services Revolving Loan ($1,000 unfunded commitment) Variable Index Spread (S +6.25%) Variable Index Floor (1.00%) Rate Cash 10.06% Rate PIK 0.00% Investment date 4/1/2022 Maturity 4/1/20272022-01-012022-12-310001513363us-gaap:SeniorNotesMember2023-01-012023-12-310001513363Affiliate Investments Applegate Greenfiber Intermediate Inc ( fka US GreenFiber LLC) Building Products Manufacturing Common Equity (5,690 units) Investment date 12/31/20212023-01-012023-12-310001513363Non-control/Non-affiliate Investments Bedford Precision Parts LLC Specialty Distribution Common Equity (500,000 units) Investment date 3/12/20192023-01-012023-12-310001513363fdus:FivePointEightSixOnePercentInterestRateMember2023-01-012023-12-310001513363us-gaap:AdditionalPaidInCapitalMember2023-01-012023-12-310001513363fdus:ControlInvestmentsMember2021-12-310001513363fdus:FourPointSevenFivePercentNotesDueTwoThousandTwentySixMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments Acendre Midco Inc Information Technology Services First Lien Debt Variable Index Spread (S +7.75%) Variable Index Floor (0.50%) Rate Cash 13.41% Rate PIK 0.00% Investment date 10/6/2021 Maturity 10/6/2026 Principal Amount 12,4062023-12-3100015133632022-10-012022-12-310001513363Affiliate Investments Spectra A&D Acquisition Inc (fka FDS Avionics Corp) Aerospace & Defense Manufacturing Common Equity (12,035 units) Investment date 8/25/20212023-01-012023-12-310001513363Non-control/Non-affiliate Investments NWS Technologies, LLC Utilities: Services Common Equity (1 unit) Investment date 6/20/20232023-12-310001513363fdus:SupplementalDividendMember2021-05-030001513363us-gaap:FairValueInputsLevel3Member2022-01-012022-12-310001513363fdus:RaymondJamesAndAssociatesIncAndRobertWBairdAndCoMemberus-gaap:CommonStockMember2023-10-012023-12-310001513363fdus:SmallBusinessAdministrationDebenturesMembersrt:ScenarioForecastMemberfdus:FivePointNineNineOnePercentInterestRateMember2024-03-310001513363Non-control/Non-affiliate Investments Worldwide Express Operations, LLC Industry Transportation services Second Lien Debt Variable Index Spread (S + 7.00%) Variable Index Floor (0.75%) Rate Cash 12.61% Rate PIK 0.00% Investment date 8/2/2021 Maturity 7/26/20292023-01-012023-12-310001513363us-gaap:ValuationTechniqueDiscountedCashFlowMemberus-gaap:FairValueInputsLevel3Memberus-gaap:SubordinatedDebtMemberfdus:MeasurementInputWeightedAverageCostOfCapitalMember2023-12-310001513363us-gaap:WarrantMember2022-12-310001513363Non-control/Non-affiliate Investments 301 Edison Holdings Inc. (dba LGG Industrial) Specialty Distribution Preferred Equity (519,244 units) Investment date 11/14/20232023-01-012023-12-310001513363Affiliate Investments Spectra A&D Acquisition Inc (fka FDS Avionics Corp) Aerospace & Defense Manufacturing Common Equity (38,493 units) Investment date 12/16/20222022-12-310001513363fdus:SmallBusinessAdministrationDebenturesMemberfdus:SixPointZeroTwoSixPercentInterestRateMember2023-12-310001513363Non-control/Non-affiliate Investments Prime AE Group, Inc. Business Services Preferred Equity (900,000 shares) Investment date 11/25/20192022-01-012022-12-310001513363Non-control/Non-affiliate Investments ISI PSG Holdings, LLC (dba Incentive Solutions, Inc.) Business Services First Lien Debt Variable Index Spread (L +7.50%) Variable Index Floor (0.50%) Rate Cash 11.17% Rate PIK 0.00% Investment date 6/30/2021 Maturity 4/5/20262022-12-310001513363fdus:UnitrancheInvestmentsMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments BP Thrift Buyer, LLC (dba myUnique and Ecothrift) Retail First Lien Debt Variable Index Spread (S +5.75%) Variable Index Floor (1.50%) Rate Cash 11.14% Rate PIK 0.00% Investment date 9/13/2022 Maturity 9/13/20272023-01-012023-12-310001513363Non-control/Non-affiliate Investments American AllWaste LLC (dba WasteWater Transport Services) Environmental Industries2022-12-310001513363us-gaap:ValuationTechniqueDiscountedCashFlowMemberus-gaap:FairValueInputsLevel3Memberfdus:FirstLienDebtMembersrt:WeightedAverageMemberfdus:MeasurementInputWeightedAverageCostOfCapitalMember2023-12-310001513363Non-control/Non-affiliate Investments GP&C Operations, LLC (dba Garlock Printing and Converting) Component Manufacturing2022-12-310001513363fdus:TediaCompanyLlcMemberfdus:DelayedDrawCommitmentTwoMemberfdus:HealthcareProductsMemberfdus:NonControlOrNonAffiliateInvestmentsMember2022-01-012022-12-310001513363fdus:PrimeAeGroupIncMemberfdus:FirstLienDebtMemberfdus:BusinessServicesMemberfdus:NonControlOrNonAffiliateInvestmentsMember2023-12-310001513363fdus:TwoPointThreeSevenSevenPercentInterestRateMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments GMP HVAC, LLC (dba McGee Heating & Air, LLC) Utilities: Services Preferred Equity (1,000 units) Investment date 12/8/20232023-12-310001513363Non-control/Non-affiliate Investments NWS Technologies, LLC Utilities: Services Preferred Equity (0.375 units) Investment date 6/20/20232023-01-012023-12-310001513363fdus:NonControlOrNonAffiliateInvestmentsMember2022-01-012022-12-310001513363Non-control/Non-affiliate Investments Hub Acquisition Sub, LLC (dba Hub Pen) Promotional products Common Equity (3,750 units) Investment date 3/23/20162022-01-012022-12-310001513363fdus:InvestmentAdvisoryAgreementMember2022-01-012022-12-310001513363Non-control/Non-affiliate Investments NWS Technologies, LLC Utilities: Services Common Equity (1 unit) Investment date 6/20/20232023-01-012023-12-310001513363Non-control/Non-affiliate Investments Auto CRM LLC (dba Dealer Holdings) Information Technology Services First Lien Debt Variable Index Spread (P +5.50%) Variable Index Floor (3.25%) Rate Cash 13.00% Rate PIK 0.85% Investment date 10/1/2021 Maturity 10/1/20262022-12-310001513363Non-control/Non-affiliate Investments R1 Holdings, LLC (dba RoadOne IntermodaLogistics) Transportation services Subordinated Debt ($417 unfunded commitment) Rate Cash/PIK 8.75%/5.00% Investment date 12/30/2022 Maturity 6/30/20292022-01-012022-12-310001513363fdus:EighteenAndSixteenPortfolioCompanyInvestmentsMember2022-12-310001513363Non-control/Non-affiliate Investments Sonicwall US Holdings, Inc. Second Lien Debt Industry Information Technology Services Variable Index Spread / Floor (L + 7.50%) / (0.00%) Rate Cash/PIK 12.20%/0.00% Investment date 9/6/2022 Maturity 5/18/20262022-12-310001513363fdus:DividendReinvestmentPlanMember2021-01-012021-12-310001513363fdus:ElementsBrandsLlcRevolvingLoanMember2022-12-310001513363fdus:BarefootMosquitoAndPestControlLlcRevolvingLoanMember2023-12-310001513363fdus:InvestmentAdvisorsLiabilityLimitedUnderInvestmentAdvisoryAgreementMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments PowerGrid Services Acquisition, LLC Utilities: Services Second Lien Debt Variable Index Spread (S+9.50%) Variable Index Floor (1.00%) Rate Cash 15.15% Rate PIK 0.00% Investment date 9/12/2021 Maturity 3/21/20292023-01-012023-12-310001513363Non-control/Non-affiliate Investments Hub Acquisition Sub, LLC (dba Hub Pen) Promotional products Preferred Equity (868 units) Investment date 10/16/20202023-01-012023-12-310001513363fdus:FivePointNineEightZeroPercentInterestRateMemberfdus:SmallBusinessAdministrationDebenturesMembersrt:ScenarioForecastMember2024-03-310001513363fdus:ChoiceTechnologySolutionsLlcDbaChoiceMerchantSolutionsLlcRevolvingLoanMember2023-12-310001513363Non-control/Non-affiliate Investments ISI PSG Holdings, LLC (dba Incentive Solutions, Inc.) Business Services First Lien Debt Variable Index Spread (S+7.50%) Variable Index Floor (0.50%) Rate Cash 9.50% Rate PIK 0.00% Investment date 6/30/2021 Maturity 4/5/20262023-12-310001513363fdus:AffiliateInvestmentsMemberfdus:FarResearchIncMember2022-12-310001513363fdus:FirstLienDebtMemberfdus:WesternsSmokehouseLlcMemberfdus:NonControlOrNonAffiliateInvestmentsMemberfdus:ConsumerProductsSectorMember2022-12-310001513363fdus:DiversifiedSearchLlcMemberfdus:FirstLienDebtMemberfdus:BusinessServicesMemberfdus:NonControlOrNonAffiliateInvestmentsMember2022-12-310001513363Non-control/Non-affiliate Investments Hub Acquisition Sub, LLC (dba Hub Pen) Promotional products2022-12-310001513363Non-control/Non-affiliate Investments Combined Systems, Inc. Aerospace & Defense Manufacturing Revolving Loan ($162 unfunded commitment) Variable Index Spread (L +10.00%) Variable Index Floor (2.00%) Rate Cash 16.74% Rate PIK 0.00% Investment date 1/31/2020 Maturity 1/31/20252022-12-310001513363Non-control/Non-affiliate Investments AOM Intermediate Holdco, LLC (dbaAllOver Media) Information Technology Services First Lien Debt Variable Index Spread (S +6.50%) Variable Index Floor (0.75%) Rate Cash 10.31% Rate PIK 0.00% Investment date 2/1/2022 Maturity 2/1/20272022-12-310001513363Non-control/Non-affiliate Investments OnePath Systems, LLC Information Technology Services Common Equity (732,542 shares) Investment date 9/30/20222023-12-310001513363fdus:SmallBusinessAdministrationDebenturesMember2016-01-012016-12-310001513363Non-control/Non-affiliate Investments Elements Brands, LLC Consumer Products Revolving Loan Cash 12.25% Rate PIK 0.00% Investment date 12/31/2020 Maturity 6/30/20242023-12-310001513363Non-control/Non-affiliate Investments American AllWaste LLC (dba WasteWater Transport Services) Environmental Industries Preferred Equity (207 units) Investment Date 8/6/20192023-01-012023-12-310001513363Non-control/Non-affiliate Investments Zonkd, LLC Industry Component Manufacturing Common Equity (4,987 units) Investment date 3/18/20222023-12-310001513363Affiliate Investments Applegate Greenfiber Intermediate Inc ( fka US GreenFiber LLC) Building Products Manufacturing Common Equity (2,012 units) Investment date 12/31/20212022-01-012022-12-310001513363Investments and Money Market Funds2022-12-310001513363Non-control/Non-affiliate Investments Westerns Smokehouse, LLC Delayed Draw Commitment ($2,702 unfunded commitment) Consumer Products Variable Index Spread/Floor(S + 5.00%)/(1.50%) Rate Cash /PIK 9.71%/ 0.00% Investment date 6/29/2022 Maturity 12/23/20242022-01-012022-12-310001513363Non-control/Non-affiliate Investments Applied Data Corporation Information Technology Services Preferred Equity Investment date 11/6/20202022-01-012022-12-310001513363Non-control/Non-affiliate Investments Dataguise, Inc. Information Technology Services Subordinated Debt Variable Index Cash 11.00% Rate PIK 3.00% Investment date 12/30/2022 Maturity 11/23/20272022-01-012022-12-310001513363Non-control/Non-affiliate Investments Dataguise, Inc. Information Technology Services Subordinated Debt Variable Index Cash 11.00% Rate PIK 3.00% Investment date 12/30/2022 Maturity 11/23/20272022-12-310001513363fdus:SmallBusinessAdministrationDebenturesMember2022-12-310001513363us-gaap:CommonStockMember2021-01-012021-12-310001513363Non-control/Non-affiliate Investments White Label Communication, LLC Industry Information Technology Services Preferred Equity (5,000 units) Investment date 10/11/20232023-01-012023-12-310001513363fdus:ControlManyOfPortfolioCompaniesMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments Applied Data Corporation Information Technology Services2022-12-310001513363Non-control/Non-affiliate Investments Suited Connector LLC Information Technology Services Common Equity (56,382 units) Investment date 12/1/20212023-01-012023-12-310001513363us-gaap:CarryingReportedAmountFairValueDisclosureMemberfdus:VirtexEnterprisesLpMember2023-12-310001513363fdus:SpecialDividendMember2022-11-032022-11-030001513363Non-control/Non-affiliate Investments American AllWaste LLC (dba WasteWater Transport Services) Environmental Industries Preferred Equity (207 units) Investment Date 8/6/20192023-12-310001513363fdus:FivePointFourthreeNinePercentInterestRateMember2022-01-012022-12-310001513363Non-control/Non-affiliate Investments Tiger Calcium Services Inc. Transportation services Second Lien Debt Rate Cash 12.50% Rate PIK 0.00% Investment date 12/21/2022 Maturity 5/31/20252023-01-012023-12-310001513363fdus:NonDiversifiedInvestmentCompanyMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments Prime AE Group, Inc.2022-12-310001513363Affiliate Investments Medsurant Holding LLC Healthcare Services Warrant (252,588 units) Investment date 4/12/20112022-01-012022-12-310001513363Non-control/Non-affiliate Investments BP Thrift Buyer, LLC (dba myUnique and Ecothrift) Retail Common Equity (1000 units) Investment date 9/13/20222023-12-310001513363us-gaap:WarrantMember2022-01-012022-12-310001513363fdus:AffiliateInvestmentsMemberfdus:MedsurantHoldingsLlcMember2022-12-310001513363Non-control/Non-affiliate Investments Cardboard Box LLC (dba Anthonys Coal Fired Pizza) Restaurants Common Equity (14,201 units) Investment date 11/3/20222022-12-310001513363Non-control/Non-affiliate Investments BP Thrift Buyer, LLC (dba myUnique and Ecothrift) Retail First Lien Debt Variable Index Spread (S +5.75%) Variable Index Floor (1.50%) Rate Cash 11.14% Rate PIK 0.00% Investment date 9/13/2022 Maturity 9/13/20272023-12-310001513363Non-control/Non-affiliate Investments Allredi LLC (fka Macro Group International OpCo. LLC) Industrial Cleaning & Coatings Second Lien Debt Rate Cash 12.50% Rate PIK 2.25% Investment date 3/2/2020 Maturity 9/2/20262022-12-310001513363us-gaap:ValuationTechniqueDiscountedCashFlowMembersrt:MaximumMemberus-gaap:FairValueInputsLevel3Memberfdus:FirstLienDebtMemberfdus:MeasurementInputWeightedAverageCostOfCapitalMember2022-12-310001513363Non-control/Non-affiliate Investments Virginia Tile Company, LLC Industry Specialty Distribution Common Equity (17 units) Investment date 12/19/20142022-12-310001513363fdus:NonControlOrNonAffiliateInvestmentsMember2021-01-012021-12-310001513363Non-control/Non-affiliate Investments Pool & Electrical Products, LLC Specialty Distribution Common Equity (15,000 units) Investment date 10/28/20202022-12-310001513363Non-control/Non-affiliate Investments Cardback Intermediate, LLC (dba Chargeback Gurus) Information Technology Services2023-12-310001513363fdus:AffiliateInvestmentsMemberfdus:StewardHoldingLlcMember2023-12-310001513363fdus:SpecialDividendMember2023-05-020001513363Non-control/Non-affiliate Investments Elements Brands, LLC Consumer Products First Lien Debt Cash 12.25% Rate PIK 0.00% Investment date 12/31/2020 Maturity 6/30/20242022-01-012022-12-310001513363fdus:UnitedStatesMidwestMember2023-12-310001513363Non-control/Non-affiliate Investments R1 Holdings, LLC (dba RoadOne IntermodaLogistics) Transportation services Common Equity (280,000 units) ($70 unfunded commitment) Investment date 12/30/20222022-12-310001513363Non-control/Non-affiliate Investments US Fertility Enterprises, LLC Industry Healthcare Services Subordinated Debt Rate Cash 0.00% Rate PIK 13.75% Investment date 5/19/2023 Maturity 6/1/20282023-12-310001513363fdus:SupplementalDividendMember2021-02-092021-02-090001513363Non-control/Non-affiliate Investments MDME Holding Corp. Healthcare Products First Lien Debt Variable Index Spread (S+6.25%) Variable Index Floor (1.00%) Rate Cash 11.75% Rate PIK 0.00% Investment date 8/31/2023 Maturity 8/3/20272023-12-310001513363fdus:UnitedStatesSouthwestMember2023-12-310001513363Affiliate Investments Medsurant Holding LLC Healthcare Services2022-12-310001513363us-gaap:ValuationTechniqueDiscountedCashFlowMemberus-gaap:FairValueInputsLevel3Memberfdus:SecondLienDebtMember2022-12-310001513363fdus:AffiliateInvestmentsMember2021-12-310001513363fdus:CapitalMarketsDisruptionAndEconomicUncertaintyMember2023-01-012023-12-310001513363fdus:AtTheMarketOfferingProgramMemberus-gaap:SubsequentEventMemberus-gaap:CommonStockMember2024-01-012024-02-280001513363Non-control/Non-affiliate Investments Dataguise, Inc. Information Technology Services Subordinated Debt Rate Cash 11.00% Rate PIK 2.00% Investment date 12/30/2022 Maturity 11/23/20272023-01-012023-12-310001513363Non-control/Non-affiliate Investments Haematologic Technologies, Inc. Healthcare Services Common Equity (630 units) Investment date 10/11/20192023-01-012023-12-310001513363fdus:NotesMember2018-01-012018-12-310001513363Non-control/Non-affiliate Investments Aeronix Inc Aerospace & Defense Manufacturing First Lien Debt Variable Index Spread (L +5.88%) Variable Index Floor (0.50%) Rate Cash 10.63% Rate PIK 0.00% Investment date 6/11/2021 Maturity 6/11/20262022-01-012022-12-310001513363Non-control/Non-affiliate Investments The Kyjen Company, LLC (dba Outward Hound) Consumer Products Common Equity (855 shares) Investment date 12/8/20172023-12-310001513363us-gaap:FairValueInputsLevel3Memberfdus:SecondLienDebtMemberus-gaap:FairValueMeasurementsRecurringMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments UBEO, LLC. Business Services Common Equity (705,000 units) Investment date 4/3/20182023-12-310001513363fdus:TwoPointThreeSevenSevenPercentInterestRateMember2022-12-310001513363fdus:ControlInvestmentsMemberfdus:MesaLineServicesLlcMember2021-12-310001513363fdus:InformationTechnologyServicesMemberfdus:FirstLienDebtMemberfdus:NonControlOrNonAffiliateInvestmentsMemberfdus:AutoCrmLlcMember2023-12-310001513363Non-control/Non-affiliate Investments Applied Data Corporation Information Technology Services Common Equity Investment date 10/1/20212022-12-310001513363fdus:SpecialDividendMember2021-08-022021-08-020001513363fdus:DividendReinvestmentPlanMember2022-01-012022-03-310001513363Non-control/Non-affiliate Investments Rhino Assembly Company, LLC Specialty Distribution Common Equity (Class A Units) (10,915 units) Investment date 08/11/20172022-01-012022-12-310001513363fdus:PfanstiehlIncMember2023-01-012023-12-310001513363us-gaap:MeasurementInputEbitdaMultipleMemberfdus:ValuationTechniqueEnterpriseValueMemberus-gaap:FairValueInputsLevel3Membersrt:MinimumMemberus-gaap:SubordinatedDebtMember2022-12-310001513363country:CA2023-12-310001513363Non-control/Non-affiliate Investments Elements Brands, LLC Consumer Products2022-12-310001513363Non-control/Non-affiliate Investments R1 Holdings, LLC (dba RoadOne IntermodaLogistics) Transportation services First Lien Debt ($2,489 unfunded commitment) Variable Index Spread / Floor (S + 6.25%) / (1.00%) Rate Cash/PIK 10.83%/0.00% Investment date 12/30/2022 Maturity 12/30/20282022-12-310001513363Non-control/Non-affiliate Investments Winona Foods, Inc. Industry Specialty Distribution First Lien Debt Variable Index Spread (S + 11.00%) Variable Index Floor (6.00%) Rate Cash 12.00% Rate PIK 5.00% Investment date 12/13/2023 Maturity 6/13/20272023-12-310001513363us-gaap:FairValueInputsLevel3Memberfdus:FirstLienDebtMemberus-gaap:FairValueMeasurementsRecurringMember2021-12-310001513363Non-control/Non-affiliate Investments Barefoot Mosquito and Pest Control, LLC Consumer Services Common Equity (3,974 units) Investment date 12/22/20232023-12-310001513363us-gaap:AccumulatedDistributionsInExcessOfNetIncomeMember2022-01-012022-12-310001513363fdus:MirageTrailersLlcMemberfdus:AffiliateInvestmentsMember2022-01-012022-12-310001513363Money Market Funds Goldman Sachs Financial Square Treasury Obligation Institution2023-12-310001513363Non-control/Non-affiliate Investments Allredi LLC (fka Macro Group International OpCo. LLC) Industrial Cleaning & Coatings Common Equity (524,624 units) Investment date 8/3/20252023-01-012023-12-310001513363us-gaap:SubordinatedDebtMember2022-01-012022-12-310001513363Non-control/Non-affiliate Investments Suited Connector LLC Information Technology Services Common Equity (7,500 units) Investment date 12/01/20212022-12-310001513363fdus:HighlyCompetitiveMarketForInvestmentOpportunitiesMember2023-01-012023-12-310001513363us-gaap:EstimateOfFairValueFairValueDisclosureMemberfdus:VirtexEnterprisesLpMember2023-12-310001513363us-gaap:MeasurementInputEbitdaMultipleMemberfdus:ValuationTechniqueEnterpriseValueMemberus-gaap:FairValueInputsLevel3Membersrt:WeightedAverageMember2022-12-310001513363fdus:SixPointZeroZeroZeroPercentNotesDueTwoThousandTwentyFourMember2021-02-160001513363Non-control/Non-affiliate Investments APM Intermediate Holdings, LLC (dba Artistic Paver Manufacturing, Inc.) Building Products Manufacturing Common Equity Investment date 11/8/20222022-01-012022-12-310001513363Non-control/Non-affiliate Investments 2KDirect, Inc. (dba iPromote) Information Technology Services First Lien Debt Variable Index Spread (S+7.25%) Variable Index Floor (0.50%) Rate Cash 12.80% Rate PIK 0.00% Investment date 6/25/2021 Maturity 6/25/20262023-01-012023-12-310001513363Control Investments EBL LLC (EbLens) Retail2022-12-310001513363Non-control/Non-affiliate Investments Acendre Midco Inc Information Technology Services Revolving Loan ($1,000 unfunded commitment) Variable Index Spread (S +7.50%) Variable Index Floor (0.50%) Rate Cash 12.30% Rate PIK 0.00% Investment date 10/6/20212022-12-310001513363us-gaap:ValuationTechniqueDiscountedCashFlowMemberus-gaap:FairValueInputsLevel3Memberfdus:SecondLienDebtMembersrt:MinimumMemberfdus:MeasurementInputWeightedAverageCostOfCapitalMember2022-12-310001513363us-gaap:FairValueInputsLevel3Memberfdus:SecondLienDebtMember2022-12-310001513363fdus:MayNotRealizeGainsFromEquityInvestmentMember2023-01-012023-12-3100015133632016-01-012016-12-310001513363fdus:PreferredEquityMemberus-gaap:SubsequentEventMemberfdus:JanusHealthTechnologiesIncMember2024-01-030001513363fdus:SupplementalDividendMember2023-08-012023-08-010001513363fdus:ValuationTechniqueEnterpriseValueMemberus-gaap:FairValueInputsLevel3Memberfdus:FirstLienDebtMemberus-gaap:MeasurementInputRevenueMultipleMembersrt:MinimumMember2022-12-310001513363Non-control/Non-affiliate Investments United Biologics, LLC. Industry Healthcare Services Warrant (57,469 units) Investment date 3/5/20122022-12-310001513363fdus:ValuationTechniqueEnterpriseValueMemberus-gaap:FairValueInputsLevel3Memberfdus:MeasurementInputAssetCoverageMemberfdus:SecondLienDebtMembersrt:MinimumMember2022-12-310001513363fdus:WarrantsNotesMemberfdus:MidwestTransitEquipmentIncMemberfdus:NonControlOrNonAffiliateInvestmentsMemberfdus:TransportationServicesMember2022-12-310001513363Non-control/Non-affiliate Investments Auto CRM LLC (dba Dealer Holdings) Information Technology Services Common Equity (500 units) Investment date 10/1/20212023-01-012023-12-310001513363us-gaap:ValuationTechniqueDiscountedCashFlowMemberus-gaap:FairValueInputsLevel3Memberfdus:SecondLienDebtMember2023-12-310001513363Non-control/Non-affiliate Investments Mobilewalla, Inc. Information Technology Services First Lien Debt Variable Index Spread (L +11.50%) Variable Index Floor (0.50%) Rate Cash 16.26% Rate PIK 0.00% Investment date 12/17/2021 Maturity 12/17/20242022-12-310001513363Non-control/Non-affiliate Investments Palmetto Moon, LLC Retail Common Equity (499 units) Investment date 11/3/20162022-01-012022-12-310001513363us-gaap:ValuationTechniqueDiscountedCashFlowMembersrt:MaximumMemberus-gaap:FairValueInputsLevel3Memberus-gaap:SubordinatedDebtMemberfdus:MeasurementInputWeightedAverageCostOfCapitalMember2023-12-310001513363Non-control/Non-affiliate Investments Aldinger Company Business Services2023-12-3100015133632023-05-022023-05-020001513363Non-control/Non-affiliate Investments MBS Opco, LLC (dba Marketron) Information Technology Services First Lien Debt Variable Index Spread (S+8.50%) Variable Index Floor (1.50%) Rate Cash 14.16% Rate PIK 0.00% Investment date 9/29/2022 Maturity 9/28/20262023-12-3100015133632018-01-012018-12-310001513363us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2022-12-310001513363fdus:SmallBusinessAdministrationDebenturesMemberus-gaap:SubsequentEventMember2024-02-282024-02-280001513363fdus:AffiliateInvestmentsMemberfdus:SpectraAAndDAcquisitionIncMember2023-01-012023-12-310001513363Control Investments US GreenFiber LLC Building Products Manufacturing Common Equity (425,508 units) Investment Date 8/30/20192023-01-012023-12-310001513363Non-control/Non-affiliate Investments MDME Holding Corp. Healthcare Products Preferred Equity (12,500 units) Investment date 9/18/20232023-01-012023-12-310001513363fdus:January2026NotesMember2020-01-012020-12-310001513363fdus:SbaRegulationsLimitAmountAvailableToBeBorrowedBySbicMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments Gurobi Optimization, LLC Information Technology Services Common Equity (5 shares) Investment date 12/19/20172023-01-012023-12-310001513363fdus:UnableToProtectIntellectualPropertyRightsMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments NWS Technologies, LLC Utilities: Services Preferred Equity (0.375 units) Investment date 6/20/20232023-12-310001513363fdus:SpecialDividendMember2023-02-152023-02-150001513363Non-control/Non-affiliate Investments Diversified Search LLC Business Services2023-12-310001513363us-gaap:WarrantMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2021-12-310001513363Non-control/Non-affiliate Investments CTM Group, Inc. Business Services First Lien Debt Variable Index Spread (S +6.75%) Variable Index Floor (1.00%) Rate Cash 12.29% Rate PIK 0.00% Investment date 2/28/2023 Maturity 11/30/20262023-01-012023-12-310001513363fdus:January2026NotesMember2023-12-310001513363Non-control/Non-affiliate Investments UBEO, LLC. Business Services Common Equity (705,000 units) Investment date 4/3/20182023-01-012023-12-310001513363us-gaap:LineOfCreditMember2017-12-310001513363Non-control/Non-affiliate Investments GP&C Operations, LLC (dba Garlock Printing and Converting) Component Manufacturing First Lien Debt Variable Index Spread (L +8.25%) Variable Index Floor (1.00%) Rate Cash 13.01% Rate PIK 0.00% Investment date 1/22/2021 Maturity 1/22/20262022-12-310001513363Non-control/Non-affiliate Investments Micronics Filtration Holdings, Inc. (dba Micronics Engineered Filtration Group, Inc.) Component Manufacturing First Lien Debt Variable Index Spread (S +5.50%) Variable Index Floor (0.50%) Rate Cash 9.32% Rate PIK 0.00% Investment date 2/17/2022 Maturity 2/17/20272022-01-012022-12-310001513363fdus:UsGreenfiberLlcMemberfdus:ControlInvestmentsMember2023-12-310001513363fdus:SupplementalDividendOneMember2022-08-010001513363fdus:TwoPointOneSevenTwoPercentInterestRateMember2023-01-012023-12-310001513363us-gaap:EstimateOfFairValueFairValueDisclosureMemberfdus:AllrediLlcMember2022-12-310001513363Non-control/Non-affiliate Investments Global Plasma Solutions, Inc. Component Manufacturing2023-12-310001513363us-gaap:RevolvingCreditFacilityMemberfdus:IngCapitalLimitedLiabilityCompanyMembersrt:MinimumMemberfdus:SeniorSecuredRevolvingCreditAgreementMember2019-04-242019-04-240001513363Non-control/Non-affiliate Investments OnePath Systems, LLC Information Technology Services2022-12-310001513363fdus:ThreePointFiveZeroPercentNotesDueTwoThousandTwentySixMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments CRS Solutions Holdings, LLC (dba CRS Texas) Business Services Common Equity (574,929 units) Investment date 6/28/20222023-01-012023-12-310001513363us-gaap:WarrantMember2023-12-310001513363us-gaap:RevolvingCreditFacilityMemberfdus:IngCapitalLimitedLiabilityCompanyMemberfdus:SeniorSecuredRevolvingCreditAgreementMember2020-06-260001513363fdus:SmallBusinessAdministrationDebenturesMembersrt:ScenarioForecastMemberfdus:SixPointZeroEightThreePercentInterestRateMember2024-03-310001513363fdus:SbaDebenturesMember2023-01-012023-12-310001513363Affiliate Investments Spectra A&D Acquisition, Inc. (fka FDS Avionics Corp.) Aerospace & Defense Manufacturing Common Equity (6,783 units) Investment date 07/10/20232023-12-310001513363Non-control/Non-affiliate Investments Fishbowl Solutions, LLC Information Technology Services First Lien Debt Variable Index Spread (S +7.75%) Variable Index Floor (1.00%) Rate Cash 13.40% Rate PIK 0.00% Investment date 3/25/2022 Maturity 3/25/20272023-12-310001513363us-gaap:WarrantMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments Dataguise, Inc. Information Technology Services Subordinated Debt Rate Cash 11.00% Rate PIK 2.00% Investment date 12/30/2022 Maturity 11/23/20272023-12-310001513363Non-control/Non-affiliate Investments OnePath Systems, LLC Information Technology Services First Lien Debt Variable Index Spread (S+7.50%) Variable Index Floor (1.00%) Rate Cash 12.83% Rate PIK 0.00% Investment date 9/30/2022 Maturity 9/30/20272023-01-012023-12-310001513363Affiliate Investments Steward Holding LLC (dba Steward Advanced Materials) Aerospace & Defense Manufacturing Common Equity (1,000,000 units) Investment Date 11/12/20152023-01-012023-12-310001513363Non-control/Non-affiliate Investments Virginia Tile Company, LLC Industry Specialty Distribution Common Equity (17 Units) Investment date 12/19/20142023-12-310001513363fdus:November2024NotesMember2020-12-310001513363Non-control/Non-affiliate Investments Wonderware Holdings, LLC (dba CORE Business Technologies) Information Technology Services First Lien Debt Variable Index Spread (L + 7.25%) Variable Index Floor (1.00%) Rate Cash 11.97% Rate PIK 0.00% Investment date 2/10/2021 Maturity 2/9/20262022-12-310001513363us-gaap:CommonStockMember2023-12-310001513363fdus:RaymondJamesAndAssociatesIncAndRobertWBairdAndCoMemberus-gaap:CommonStockMember2023-01-012023-03-310001513363Non-control/Non-affiliate Investments GMP HVAC, LLC (dba McGee Heating & Air, LLC) Utilities: Services First Lien Debt Variable Index Spread (S +7.00%) Variable Index Floor (2.00%) Rate Cash 12.38% Rate PIK 0.00% Investment date 12/8/2023 Maturity 12/8/20282023-12-310001513363Non-control/Non-affiliate Investments Education Incites, LLC (dba Acceleration Academies) Business Services Second Lien Debt Cash 12.75% Rate PIK 0.00% Investment date 10/31/2022 Maturity 10/29/20272023-12-310001513363Non-control/Non-affiliate Investments Cardback Intermediate, LLC (dba Chargeback Gurus) Information Technology Services Preferred Equity (495 shares) Investment date 8/10/20212022-01-012022-12-310001513363Non-control/Non-affiliate Investments APM Intermediate Holdings, LLC (dba Artistic Paver Manufacturing, Inc.) Building Products Manufacturing Common Equity (1,200 units) Investment date 11/8/20222023-12-310001513363fdus:SecondLienDebtMember2022-12-310001513363Non-control/Non-affiliate Investments Worldwide Express Operations, LLC Industry Transportation services Common Equity (795,000units) Investment date 7/21/20212023-12-310001513363fdus:GlobalEconomicPoliticalAndMarketConditionsMember2023-01-012023-12-310001513363Control Investments US GreenFiber LLC Building Products Manufacturing Common Equity (1,022,813 units) Investment Date 7/1/20202022-01-012022-12-310001513363fdus:DividendReinvestmentPlanMember2021-07-012021-09-300001513363fdus:DefaultsByPortfolioCompaniesMember2023-01-012023-12-310001513363fdus:PrimaryInvestmentsDeemedNotToBeQualifyingAssetsMember2023-01-012023-12-310001513363Non-control/Non-affiliate Investments Ad Info Parent, Inc. (dba MediaRadar) Information Technology Services First Lien Debt Variable Index Spread (S+6.25%) Variable Index Floor (1.00%) Rate Cash 11.75% Rate PIK 0.00% Investment date 11/1/2023 Maturity 9/16/20292023-01-012023-12-310001513363fdus:FivePointFourThreeNinePercentInterestRateOneMember2022-12-3100015133632021-05-030001513363fdus:January2026NotesMember2023-01-012023-12-310001513363fdus:WinonaFoodsIncMemberfdus:FirstLienDebtMemberfdus:NonControlOrNonAffiliateInvestmentsMemberfdus:SpecialtyDistributionMember2022-12-310001513363us-gaap:AccumulatedDistributionsInExcessOfNetIncomeMember2022-12-310001513363us-gaap:FairValueInputsLevel1Memberus-gaap:MoneyMarketFundsMember2023-12-310001513363fdus:January2026NotesMember2020-12-232020-12-230001513363Non-control/Non-affiliate Investments CIH Intermediate, LLC Business Services Preferred Equity (563 shares) Investment date 3/3/20222023-01-012023-12-310001513363Non-control/Non-affiliate Investments Dataguise, Inc. Information Technology Services2023-12-310001513363Non-control/Non-affiliate Investments Diversified Search LLC Business Services First Lien Debt Variable Index Spread Variable Index Spread (S +6.50%) Variable Index Floor (1.00%) Cash 10.32% Rate PIK 0.00% Investment date 2/7/2019 Maturity 2/7/20242022-12-310001513363fdus:RisksRelatingToOurInvestmentsMember2023-01-012023-12-310001513363fdus:November2024NotesMember2023-01-012023-12-310001513363us-gaap:MeasurementInputEbitdaMultipleMemberfdus:ValuationTechniqueEnterpriseValueMemberus-gaap:FairValueInputsLevel3Membersrt:WeightedAverageMember2023-12-310001513363fdus:AffiliateInvestmentsMemberfdus:PinnergyLtdMember2022-12-310001513363Non-control/Non-affiliate Investments GMP HVAC, LLC (dba McGee Heating & Air, LLC) Utilities: Services First Lien Debt Variable Index Spread (S +7.00%) Variable Index Floor (2.00%) Rate Cash 12.38% Rate PIK 0.00% Investment date 12/8/2023 Maturity 12/8/20282023-01-012023-12-310001513363us-gaap:WarrantMember2023-12-310001513363Non-control/Non-affiliate Investments Detechtion Holdings, LLC Information Technology Services First Lien Debt Variable Index Spread (S +5.75%) Variable Index Floor (2.25%) Rate Cash 11.14% Rate PIK 2.00% Investment date 6/21/2023 Maturity 6/21/20282023-12-310001513363Non-control/Non-affiliate Investments CIH Intermediate, LLC Business Services Common Equity (563 shares) Investment date 3/3/20222022-12-310001513363Non-control/Non-affiliate Investments Detechtion Holdings, LLC Information Technology Services First Lien Debt Variable Index Spread (S +5.75%) Variable Index Floor (2.25%) Rate Cash 11.14% Rate PIK 2.00% Investment date 6/21/2023 Maturity 6/21/20282023-01-012023-12-310001513363Non-control/Non-affiliate Investments Global Plasma Solutions, Inc. Component Manufacturing Common Equity (947 shares) Investment date 9/21/20182022-12-310001513363fdus:January2026NotesMember2022-12-310001513363fdus:FourPointFiveThreeThreePercentInterestRateMember2023-01-012023-12-310001513363fdus:FourPointFiveThreeThreePercentInterestRateMember2023-12-310001513363us-gaap:WarrantMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2022-01-012022-12-310001513363us-gaap:SubordinatedDebtMember2022-12-310001513363Non-control/Non-affiliate Investments Ad Info Parent, Inc. (dba MediaRadar) Information Technology Services2023-12-310001513363us-gaap:SubsequentEventMemberfdus:SupplementalDividendMember2024-02-130001513363fdus:FivePointThreeSevenFivePercentNotesDueTwoThousandTwentyFourMember2019-10-160001513363fdus:SpecialDividendMember2023-08-010001513363Non-control/Non-affiliate Investments The Kyjen Company, LLC (dba Outward Hound) Consumer Products Common Equity (855 shares) Investment date 12/8/20172022-01-012022-12-310001513363fdus:LevelEducationGroupLlcMemberfdus:FirstLienDebtMemberfdus:BusinessServicesMemberfdus:NonControlOrNonAffiliateInvestmentsMember2022-12-31fdus:Investmentxbrli:purefdus:Segmentiso4217:USDxbrli:sharesxbrli:sharesiso4217:USD