0001321741 3-31 2026 Q2 FALSE GLADSTONE INVESTMENT CORPORATION\DE xbrli:shares iso4217:USD iso4217:USD xbrli:shares xbrli:pure gain:segment gain:portfolioCompany gain:state gain:industry gain:note 0001321741 2025-04-01 2025-09-30 0001321741 us-gaap:CommonStockMember 2025-04-01 2025-09-30 0001321741 gain:A500NotesDue2026Member 2025-04-01 2025-09-30 0001321741 gain:A4875NotesDue2028Member 2025-04-01 2025-09-30 0001321741 gain:A800NotesDue2028Member 2025-04-01 2025-09-30 0001321741 gain:A7.875NotesDue2030Member 2025-04-01 2025-09-30 0001321741 2025-11-03 0001321741 us-gaap:InvestmentUnaffiliatedIssuerMember 2025-09-30 0001321741 us-gaap:InvestmentUnaffiliatedIssuerMember 2025-03-31 0001321741 us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember 2025-09-30 0001321741 us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember 2025-03-31 0001321741 us-gaap:InvestmentAffiliatedIssuerControlledMember 2025-09-30 0001321741 us-gaap:InvestmentAffiliatedIssuerControlledMember 2025-03-31 0001321741 2025-09-30 0001321741 2025-03-31 0001321741 gain:TheAdministratorMember us-gaap:RelatedPartyMember 2025-09-30 0001321741 gain:TheAdministratorMember us-gaap:RelatedPartyMember 2025-03-31 0001321741 gain:TheAdviserMember us-gaap:RelatedPartyMember 2025-09-30 0001321741 gain:TheAdviserMember us-gaap:RelatedPartyMember 2025-03-31 0001321741 us-gaap:InvestmentUnaffiliatedIssuerMember 2025-07-01 2025-09-30 0001321741 us-gaap:InvestmentUnaffiliatedIssuerMember 2024-07-01 2024-09-30 0001321741 us-gaap:InvestmentUnaffiliatedIssuerMember 2025-04-01 2025-09-30 0001321741 us-gaap:InvestmentUnaffiliatedIssuerMember 2024-04-01 2024-09-30 0001321741 us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember 2025-07-01 2025-09-30 0001321741 us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember 2024-07-01 2024-09-30 0001321741 us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember 2025-04-01 2025-09-30 0001321741 us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember 2024-04-01 2024-09-30 0001321741 us-gaap:CashAndCashEquivalentsMember 2025-07-01 2025-09-30 0001321741 us-gaap:CashAndCashEquivalentsMember 2024-07-01 2024-09-30 0001321741 us-gaap:CashAndCashEquivalentsMember 2025-04-01 2025-09-30 0001321741 us-gaap:CashAndCashEquivalentsMember 2024-04-01 2024-09-30 0001321741 2025-07-01 2025-09-30 0001321741 2024-07-01 2024-09-30 0001321741 2024-04-01 2024-09-30 0001321741 us-gaap:InvestmentAffiliatedIssuerControlledMember 2025-07-01 2025-09-30 0001321741 us-gaap:InvestmentAffiliatedIssuerControlledMember 2024-07-01 2024-09-30 0001321741 us-gaap:InvestmentAffiliatedIssuerControlledMember 2025-04-01 2025-09-30 0001321741 us-gaap:InvestmentAffiliatedIssuerControlledMember 2024-04-01 2024-09-30 0001321741 us-gaap:OtherInvestmentCompaniesMember 2025-07-01 2025-09-30 0001321741 us-gaap:OtherInvestmentCompaniesMember 2024-07-01 2024-09-30 0001321741 us-gaap:OtherInvestmentCompaniesMember 2025-04-01 2025-09-30 0001321741 us-gaap:OtherInvestmentCompaniesMember 2024-04-01 2024-09-30 0001321741 2024-03-31 0001321741 2025-04-01 2025-06-30 0001321741 2024-04-01 2024-06-30 0001321741 2025-06-30 0001321741 2024-06-30 0001321741 2024-09-30 0001321741 gain:InvestmentUnaffiliatedAndAffiliatedIssuerExcludingOtherMember 2025-04-01 2025-09-30 0001321741 gain:InvestmentUnaffiliatedAndAffiliatedIssuerExcludingOtherMember 2024-04-01 2024-09-30 0001321741 gain:TheAdministratorMember 2025-04-01 2025-09-30 0001321741 gain:TheAdministratorMember 2024-04-01 2024-09-30 0001321741 gain:TheAdviserMember 2025-04-01 2025-09-30 0001321741 gain:TheAdviserMember 2024-04-01 2024-09-30 0001321741 gain:J.R.HobbsMember 2025-08-31 0001321741 gain:J.R.HobbsMember 2025-09-01 2025-09-30 0001321741 us-gaap:InvestmentUnaffiliatedIssuerMember gain:DebtSecuritiesSecuredFirstLienDebtMember 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:AerospaceAndDefenseMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-09-30 0001321741 Detroit Defense, Inc. – Term Debt 2025-09-30 0001321741 Global GRAB Technologies, Inc.– Line of Credit 2025-09-30 0001321741 Global GRAB Technologies, Inc. –Term Debt 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:BuildingsAndRealEstateMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-09-30 0001321741 Dema/Mai Holdings, Inc – Term Debt 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:ChemicalsPlasticsAndRubberMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-09-30 0001321741 Smart Chemical Solutions, LLC – Term Debt 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:DiversifiedConglomerateManufacturingMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-09-30 0001321741 Phoenix Door Systems, Inc – Line of Credit 2025-09-30 0001321741 Phoenix Door Systems, Inc – Line of Credit 2025-04-01 2025-09-30 0001321741 Phoenix Door Systems, Inc. – Term Debt 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:DiversifiedConglomerateServicesMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-09-30 0001321741 Horizon Facilities Services, Inc. – Term Debt 2025-09-30 0001321741 Mason West, LLC – Term Debt 2025-09-30 0001321741 Sun State Nursery and Landscaping, LLC – Line of Credit 2025-09-30 0001321741 Sun State Nursery and Landscaping, LLC – Term Debt 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:HealthcareEducationAndChildcareMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-09-30 0001321741 Educators Resource, Inc. – Term Debt 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:HomeAndOfficeFurnishingsHousewaresAndDurableConsumerProductsMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-09-30 0001321741 Brunswick Bowling Products, Inc. – Term Debt 1 2025-09-30 0001321741 Brunswick Bowling Products, Inc. – Term Debt 2 2025-09-30 0001321741 Ginsey Home Solutions, Inc. – Term Debt 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:LeisureAmusementMotionPicturesAndEntertainmentMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-09-30 0001321741 Schylling, Inc. – Term Debt 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:OilAndGas1Member us-gaap:InvestmentUnaffiliatedIssuerMember 2025-09-30 0001321741 The E3 Company, LLC – Term Debt 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:PrintingAndPublishingMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-09-30 0001321741 Home Concepts Acquisition, Inc. - Line of Credit 2025-09-30 0001321741 Home Concepts Acquisition, Inc. – Line of Credit Two 2025-09-30 0001321741 Home Concepts Acquisition, Inc. - Term Debt 2025-09-30 0001321741 us-gaap:InvestmentUnaffiliatedIssuerMember gain:DebtSecuritiesSecuredSecondLienDebtMember 2025-09-30 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember gain:AerospaceAndDefenseMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-09-30 0001321741 Galaxy Technologies Holdings, Inc. – Term Debt 1 2025-09-30 0001321741 Galaxy Technologies Holdings, Inc. – Term Debt 2 2025-09-30 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember gain:CargoTransportMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-09-30 0001321741 Diligent Delivery Systems – Term Debt 2025-09-30 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember gain:MachineryNonAgricultureNonConstructionAndNonElectronicMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-09-30 0001321741 SFEG Holdings, Inc. – Term Debt 1 2025-09-30 0001321741 us-gaap:InvestmentUnaffiliatedIssuerMember gain:PreferredEquityMember 2025-09-30 0001321741 gain:PreferredEquityMember gain:AerospaceAndDefenseMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-09-30 0001321741 Detroit Defense, Inc. - Preferred Stock 2025-09-30 0001321741 Global GRAB Technologies, Inc. – Preferred Stock 2025-09-30 0001321741 gain:PreferredEquityMember gain:BuildingsAndRealEstateMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-09-30 0001321741 Dema/Mai Holdings, Inc - Preferred Stock 2025-09-30 0001321741 gain:PreferredEquityMember gain:ChemicalsPlasticsAndRubberMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-09-30 0001321741 Smart Chemical Solutions, LLC - Preferred Stock 2025-09-30 0001321741 gain:PreferredEquityMember gain:DiversifiedConglomerateServicesMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-09-30 0001321741 Horizon Facilities Services, Inc. – Preferred Stock 2025-09-30 0001321741 Mason West, LLC – Preferred Stock 2025-09-30 0001321741 Sun State Nursery and Landscaping, LLC – Preferred Stock 2025-09-30 0001321741 gain:PreferredEquityMember gain:HealthcareEducationAndChildcareMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-09-30 0001321741 Educators Resource, Inc. – Preferred Stock 2025-09-30 0001321741 gain:PreferredEquityMember gain:HomeAndOfficeFurnishingsHousewaresAndDurableConsumerProductsMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-09-30 0001321741 Brunswick Bowling Products, Inc. – Preferred Stock 2025-09-30 0001321741 Ginsey Home Solutions, Inc. – Preferred Stock 2025-09-30 0001321741 gain:PreferredEquityMember gain:LeisureAmusementMotionPicturesAndEntertainmentMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-09-30 0001321741 Schylling, Inc. – Preferred Stock 2025-09-30 0001321741 gain:PreferredEquityMember gain:OilAndGas1Member us-gaap:InvestmentUnaffiliatedIssuerMember 2025-09-30 0001321741 The E3 Company, LLC – Preferred Stock 2025-09-30 0001321741 gain:PreferredEquityMember gain:PrintingAndPublishingMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-09-30 0001321741 Home Concepts Acquisition, Inc.- Preferred Stock 2025-09-30 0001321741 us-gaap:InvestmentUnaffiliatedIssuerMember gain:CommonEquityEquivalentsMember 2025-09-30 0001321741 gain:CommonEquityEquivalentsMember gain:AerospaceAndDefenseMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-09-30 0001321741 Galaxy Technologies Holdings, Inc. – Common Stock 2025-09-30 0001321741 gain:CommonEquityEquivalentsMember gain:CargoTransportMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-09-30 0001321741 Diligent Delivery Systems – Common Stock Warrants 2025-09-30 0001321741 gain:CommonEquityEquivalentsMember gain:DiversifiedConglomerateManufacturingMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-09-30 0001321741 Phoenix Door Systems, Inc. – Common Stock 2025-09-30 0001321741 gain:CommonEquityEquivalentsMember gain:HomeAndOfficeFurnishingsHousewaresAndDurableConsumerProductsMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-09-30 0001321741 Ginsey Home Solutions, Inc. – Common Stock 2025-09-30 0001321741 gain:CommonEquityEquivalentsMember gain:MachineryNonAgricultureNonConstructionAndNonElectronicMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-09-30 0001321741 SFEG Holdings, Inc. – Common Stock 2025-09-30 0001321741 us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember gain:DebtSecuritiesSecuredFirstLienDebtMember 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:DiversifiedConglomerateServicesMember us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember 2025-09-30 0001321741 ImageWorks Display and Marketing Group, Inc. – Term Debt 2025-09-30 0001321741 J.R. Hobbs Co. - Atlanta, LLC – Term Debt 2 2025-09-30 0001321741 The Maids International, LLC – Term Debt 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:ElectronicsMember us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember 2025-09-30 0001321741 Nielsen-Kellerman Acquisition Corp. - Term Debt 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:HomeAndOfficeFurnishingsHousewaresAndDurableConsumerProductsMember us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember 2025-09-30 0001321741 Old World Christmas, Inc. – Term Debt 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:LeisureAmusementMotionPicturesAndEntertainmentMember us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember 2025-09-30 0001321741 Pyrotek Special Effects, Inc. - Term Debt 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:MiningSteelIronAndNonPreciousMetalsTotalMember us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember 2025-09-30 0001321741 UPB Acquisition, Inc. – Term Debt 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:TelecommunicationsMember us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember 2025-09-30 0001321741 B+T Group Acquisition, Inc. – Line of Credit 1 2025-09-30 0001321741 B+T Group Acquisition, Inc. – Line of Credit 2 2025-09-30 0001321741 B+T Group Acquisition, Inc. – Term Debt 1 2025-09-30 0001321741 us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember gain:PreferredEquityMember 2025-09-30 0001321741 gain:PreferredEquityMember gain:ChemicalsPlasticsAndRubberMember us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember 2025-09-30 0001321741 PSI Molded Plastics, Inc. – Preferred Stock 2025-09-30 0001321741 gain:PreferredEquityMember gain:DiversifiedConglomerateServicesMember us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember 2025-09-30 0001321741 ImageWorks Display and Marketing Group, Inc. – Preferred Stock 2025-09-30 0001321741 J.R. Hobbs Co. – Atlanta, LLC – Preferred Stock 2025-09-30 0001321741 The Maids International, LLC – Preferred Stock 2025-09-30 0001321741 gain:PreferredEquityMember gain:ElectronicsMember us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember 2025-09-30 0001321741 Nielsen-Kellerman Acquisition Corp. – Preferred Stock 2025-09-30 0001321741 gain:PreferredEquityMember gain:HomeAndOfficeFurnishingsHousewaresAndDurableConsumerProductsMember us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember 2025-09-30 0001321741 Old World Christmas, Inc. – Preferred Stock 2025-09-30 0001321741 gain:PreferredEquityMember gain:LeisureAmusementMotionPicturesAndEntertainmentMember us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember 2025-09-30 0001321741 Pyrotek Special Effects, Inc.. – Preferred Stock 2025-09-30 0001321741 gain:PreferredEquityMember gain:MiningSteelIronAndNonPreciousMetalsTotalMember us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember 2025-09-30 0001321741 UPB Acquisition, Inc. – Preferred Stock 2025-09-30 0001321741 gain:PreferredEquityMember gain:TelecommunicationsMember us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember 2025-09-30 0001321741 B+T Group Acquisition, Inc.– Preferred Stock 2025-09-30 0001321741 us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember gain:CommonEquityEquivalentsMember 2025-09-30 0001321741 gain:CommonEquityEquivalentsMember gain:FinanceMember us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember 2025-09-30 0001321741 Gladstone Alternative Income Fund. – Common Equity 2025-09-30 0001321741 gain:CommonEquityEquivalentsMember gain:TelecommunicationsMember us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember 2025-09-30 0001321741 B+T Group Acquisition, Inc. – Common Stock Warrants 2025-09-30 0001321741 us-gaap:InvestmentAffiliatedIssuerControlledMember gain:DebtSecuritiesSecuredFirstLienDebtMember 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:DiversifiedConglomerateManufacturingMember us-gaap:InvestmentAffiliatedIssuerControlledMember 2025-09-30 0001321741 Edge Adhesives Holdings, Inc - Term Debt 2025-09-30 0001321741 gain:PreferredEquityMember gain:DiversifiedConglomerateManufacturingMember us-gaap:InvestmentAffiliatedIssuerControlledMember 2025-09-30 0001321741 Edge Adhesives Holdings, Inc. - Preferred Stock 2025-09-30 0001321741 us-gaap:InvestmentAffiliatedIssuerControlledMember gain:PreferredEquityMember 2025-09-30 0001321741 Dreyfus Treasury Obligations Cash Management Fund 2025-09-30 0001321741 us-gaap:CollateralPledgedMember 2025-09-30 0001321741 gain:PyrotekSpecialEffectsInc.AndGladstoneAlternativeIncomeFundMember 2025-09-30 0001321741 us-gaap:InvestmentUnaffiliatedIssuerMember gain:DebtSecuritiesSecuredFirstLienDebtMember 2025-03-31 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:AerospaceAndDefenseMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-03-31 0001321741 Ricardo Defense, Inc. – Term Debt 2025-03-31 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:BuildingsAndRealEstateMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-03-31 0001321741 Dema/Mai Holdings, Inc. – Term Debt 2025-03-31 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:DiversifiedConglomerateManufacturingMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-03-31 0001321741 Phoenix Door Systems, Inc – Line of Credit 2025-03-31 0001321741 Phoenix Door Systems, Inc – Line of Credit 2025-04-01 2025-06-30 0001321741 Phoenix Door Systems, Inc. – Term Debt 2025-03-31 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:DiversifiedConglomerateServicesMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-03-31 0001321741 Horizon Facilities Services, Inc. – Term Debt 2025-03-31 0001321741 Mason West, LLC – Term Debt 2025-03-31 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:HealthcareEducationAndChildcareMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-03-31 0001321741 Educators Resource, Inc. – Term Debt 2025-03-31 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:HomeAndOfficeFurnishingsHousewaresAndDurableConsumerProductsMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-03-31 0001321741 Brunswick Bowling Products, Inc. – Term Debt 1 2025-03-31 0001321741 Brunswick Bowling Products, Inc. – Term Debt 2 2025-03-31 0001321741 Ginsey Home Solutions, Inc. – Term Debt 2025-03-31 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:LeisureAmusementMotionPicturesAndEntertainmentMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-03-31 0001321741 Schylling, Inc. – Term Debt 2025-03-31 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:OilAndGas1Member us-gaap:InvestmentUnaffiliatedIssuerMember 2025-03-31 0001321741 The E3 Company, LLC – Term Debt 2025-03-31 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:PrintingAndPublishingMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-03-31 0001321741 Home Concepts Acquisition, Inc. – Line of Credit 2025-03-31 0001321741 Home Concepts Acquisition, Inc. – Line of Credit Two 2025-03-31 0001321741 Home Concepts Acquisition, Inc. – Term Debt 2025-03-31 0001321741 us-gaap:InvestmentUnaffiliatedIssuerMember gain:DebtSecuritiesSecuredSecondLienDebtMember 2025-03-31 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember gain:AerospaceAndDefenseMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-03-31 0001321741 Galaxy Technologies Holdings, Inc. – Term Debt 1 2025-03-31 0001321741 Galaxy Technologies Holdings, Inc. – Term Debt 2 2025-03-31 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember gain:CargoTransportMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-03-31 0001321741 Diligent Delivery Systems – Term Debt 2025-03-31 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember gain:MachineryNonAgricultureNonConstructionAndNonElectronicMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-03-31 0001321741 SFEG Holdings, Inc. – Term Debt 2025-03-31 0001321741 us-gaap:InvestmentUnaffiliatedIssuerMember gain:PreferredEquityMember 2025-03-31 0001321741 gain:PreferredEquityMember gain:AerospaceAndDefenseMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-03-31 0001321741 Ricardo Defense, Inc. - Preferred Stock 2025-03-31 0001321741 gain:PreferredEquityMember gain:BuildingsAndRealEstateMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-03-31 0001321741 Dema/Mai Holdings, Inc. – Preferred Stock 2025-03-31 0001321741 gain:PreferredEquityMember gain:DiversifiedConglomerateServicesMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-03-31 0001321741 Horizon Facilities Services, Inc. – Preferred Stock 2025-03-31 0001321741 Mason West, LLC – Preferred Stock 2025-03-31 0001321741 gain:PreferredEquityMember gain:HealthcareEducationAndChildcareMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-03-31 0001321741 Educators Resource, Inc. – Preferred Stock 2025-03-31 0001321741 gain:PreferredEquityMember gain:HomeAndOfficeFurnishingsHousewaresAndDurableConsumerProductsMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-03-31 0001321741 Brunswick Bowling Products, Inc. – Preferred Stock 2025-03-31 0001321741 Ginsey Home Solutions, Inc. – Preferred Stock 2025-03-31 0001321741 gain:PreferredEquityMember gain:LeisureAmusementMotionPicturesAndEntertainmentMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-03-31 0001321741 Schylling, Inc. – Preferred Stock 2025-03-31 0001321741 gain:PreferredEquityMember gain:OilAndGas1Member us-gaap:InvestmentUnaffiliatedIssuerMember 2025-03-31 0001321741 The E3 Company, LLC – Preferred Stock 2025-03-31 0001321741 gain:PreferredEquityMember gain:PrintingAndPublishingMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-03-31 0001321741 Home Concepts Acquisition, Inc. – Preferred Stock 2025-03-31 0001321741 us-gaap:InvestmentUnaffiliatedIssuerMember gain:CommonEquityEquivalentsMember 2025-03-31 0001321741 gain:CommonEquityEquivalentsMember gain:AerospaceAndDefenseMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-03-31 0001321741 Galaxy Technologies Holdings, Inc. – Common Stock 2025-03-31 0001321741 gain:CommonEquityEquivalentsMember gain:CargoTransportMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-03-31 0001321741 Diligent Delivery Systems – Common Stock Warrants 2025-03-31 0001321741 gain:CommonEquityEquivalentsMember gain:DiversifiedConglomerateManufacturingMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-03-31 0001321741 Phoenix Door Systems, Inc. – Common Stock 2025-03-31 0001321741 gain:CommonEquityEquivalentsMember gain:HomeAndOfficeFurnishingsHousewaresAndDurableConsumerProductsMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-03-31 0001321741 Ginsey Home Solutions, Inc. – Common Stock 2025-03-31 0001321741 gain:CommonEquityEquivalentsMember gain:MachineryNonAgricultureNonConstructionAndNonElectronicMember us-gaap:InvestmentUnaffiliatedIssuerMember 2025-03-31 0001321741 SFEG Holdings, Inc. – Common Stock 2025-03-31 0001321741 us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember gain:DebtSecuritiesSecuredFirstLienDebtMember 2025-03-31 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:DiversifiedConglomerateServicesMember us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember 2025-03-31 0001321741 ImageWorks Display and Marketing Group, Inc. – Term Debt 2025-03-31 0001321741 J.R. Hobbs Co. - Atlanta, LLC - Line of Credit 2025-03-31 0001321741 J.R. Hobbs Co. - Atlanta, LLC - Term Debt 1 2025-03-31 0001321741 J.R. Hobbs Co. - Atlanta, LLC - Term Debt 2 2025-03-31 0001321741 J.R. Hobbs Co. - Atlanta, LLC - Term Debt 3 2025-03-31 0001321741 The Maids International, LLC – Term Debt 2025-03-31 0001321741 Nielsen-Kellerman Acquisition Corp. Line of Credit 2025-03-31 0001321741 Nielsen-Kellerman Acquisition Corp. TL - Term Debt 2025-03-31 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:ElectronicsMember us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember 2025-03-31 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:HomeAndOfficeFurnishingsHousewaresAndDurableConsumerProductsMember us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember 2025-03-31 0001321741 Old World Christmas, Inc. – Term Loan 2025-03-31 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:LeisureAmusementMotionPicturesAndEntertainmentMember us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember 2025-03-31 0001321741 Pyrotek Special Effects, Inc. - Line of Credit 2025-03-31 0001321741 Pyrotek Special Effects, Inc. - Term Debt 2025-03-31 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:MiningSteelIronAndNonPreciousMetalsTotalMember us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember 2025-03-31 0001321741 UPB Acquisition, Inc. - Term Debt 2025-03-31 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:TelecommunicationsMember us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember 2025-03-31 0001321741 B+T Group Acquisition, Inc. – Line of Credit 1 2025-03-31 0001321741 B+T Group Acquisition, Inc. – Line of Credit 2 2025-03-31 0001321741 B+T Group Acquisition, Inc. – Term Debt 2025-03-31 0001321741 us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember gain:DebtSecuritiesSecuredSecondLienDebtMember 2025-03-31 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember gain:ChemicalsPlasticsAndRubberMember us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember 2025-03-31 0001321741 PSI Molded Plastics, Inc. – Term Debt 2025-03-31 0001321741 us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember gain:PreferredEquityMember 2025-03-31 0001321741 gain:PreferredEquityMember gain:ChemicalsPlasticsAndRubberMember us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember 2025-03-31 0001321741 PSI Molded Plastics, Inc. – Preferred Stock 2025-03-31 0001321741 gain:PreferredEquityMember gain:DiversifiedConglomerateServicesMember us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember 2025-03-31 0001321741 ImageWorks Display and Marketing Group, Inc. – Preferred Stock 2025-03-31 0001321741 J.R. Hobbs Co. – Atlanta, LLC – Preferred Stock 2025-03-31 0001321741 The Maids International, LLC – Preferred Stock 2025-03-31 0001321741 gain:PreferredEquityMember gain:ElectronicsMember us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember 2025-03-31 0001321741 Nielsen-Kellerman Acquisition Corp. – Preferred Stock 2025-03-31 0001321741 gain:PreferredEquityMember gain:HomeAndOfficeFurnishingsHousewaresAndDurableConsumerProductsMember us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember 2025-03-31 0001321741 Old World Christmas, Inc. – Preferred Stock 2025-03-31 0001321741 gain:PreferredEquityMember gain:LeisureAmusementMotionPicturesAndEntertainmentMember us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember 2025-03-31 0001321741 Pyrotek Special Effects, Inc.. – Preferred Stock 2025-03-31 0001321741 gain:PreferredEquityMember gain:MiningSteelIronAndNonPreciousMetalsTotalMember us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember 2025-03-31 0001321741 UPB Acquisition, Inc. – Preferred Stock 2025-03-31 0001321741 gain:PreferredEquityMember gain:TelecommunicationsMember us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember 2025-03-31 0001321741 B+T Group Acquisition, Inc. – Preferred Stock 2025-03-31 0001321741 us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember gain:CommonEquityEquivalentsMember 2025-03-31 0001321741 gain:CommonEquityEquivalentsMember gain:FinanceMember us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember 2025-03-31 0001321741 Gladstone Alternative Income Fund – Common Equity 2025-03-31 0001321741 gain:CommonEquityEquivalentsMember gain:TelecommunicationsMember us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember 2025-03-31 0001321741 B+T Group Acquisition, Inc. – Common Stock Warrants 2025-03-31 0001321741 us-gaap:InvestmentAffiliatedIssuerControlledMember gain:DebtSecuritiesSecuredFirstLienDebtMember 2025-03-31 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:DiversifiedConglomerateManufacturingMember us-gaap:InvestmentAffiliatedIssuerControlledMember 2025-03-31 0001321741 Edge Adhesives Holdings, Inc. – Term Debt 2025-03-31 0001321741 us-gaap:InvestmentAffiliatedIssuerControlledMember gain:PreferredEquityMember 2025-03-31 0001321741 gain:PreferredEquityMember gain:DiversifiedConglomerateManufacturingMember us-gaap:InvestmentAffiliatedIssuerControlledMember 2025-03-31 0001321741 Edge Adhesives Holdings, Inc. – Preferred Stock 2025-03-31 0001321741 Dreyfus Treasury Obligations Cash Management Fund 2025-03-31 0001321741 us-gaap:CollateralPledgedMember 2025-03-31 0001321741 gain:PyrotekSpecialEffectsInc.AndGladstoneAlternativeIncomeFundMember 2025-03-31 0001321741 gain:BTGroupAcquisitionInc.BTDiligentDeliverySystemsDiligentAndEdgeAdhesivesHoldingsInc.EdgeMember 2025-09-30 0001321741 gain:BTDiligentEdgeAndJ.R.HobbsCo.AtlantaLLCJ.R.HobbsMember 2025-03-31 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember us-gaap:FairValueInputsLevel1Member 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember us-gaap:FairValueInputsLevel2Member 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember us-gaap:FairValueInputsLevel3Member 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember 2025-09-30 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember us-gaap:FairValueInputsLevel1Member 2025-09-30 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember us-gaap:FairValueInputsLevel2Member 2025-09-30 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember us-gaap:FairValueInputsLevel3Member 2025-09-30 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember 2025-09-30 0001321741 gain:PreferredEquityMember us-gaap:FairValueInputsLevel1Member 2025-09-30 0001321741 gain:PreferredEquityMember us-gaap:FairValueInputsLevel2Member 2025-09-30 0001321741 gain:PreferredEquityMember us-gaap:FairValueInputsLevel3Member 2025-09-30 0001321741 gain:PreferredEquityMember 2025-09-30 0001321741 gain:CommonEquityEquivalentsMember us-gaap:FairValueInputsLevel1Member 2025-09-30 0001321741 gain:CommonEquityEquivalentsMember us-gaap:FairValueInputsLevel2Member 2025-09-30 0001321741 gain:CommonEquityEquivalentsMember us-gaap:FairValueInputsLevel3Member 2025-09-30 0001321741 gain:CommonEquityEquivalentsMember 2025-09-30 0001321741 us-gaap:FairValueInputsLevel1Member 2025-09-30 0001321741 us-gaap:FairValueInputsLevel2Member 2025-09-30 0001321741 us-gaap:FairValueInputsLevel3Member 2025-09-30 0001321741 us-gaap:FairValueInputsLevel12And3Member 2025-09-30 0001321741 us-gaap:FairValueMeasuredAtNetAssetValuePerShareMember 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember us-gaap:FairValueInputsLevel1Member 2025-03-31 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember us-gaap:FairValueInputsLevel2Member 2025-03-31 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember us-gaap:FairValueInputsLevel3Member 2025-03-31 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember 2025-03-31 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember us-gaap:FairValueInputsLevel1Member 2025-03-31 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember us-gaap:FairValueInputsLevel2Member 2025-03-31 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember us-gaap:FairValueInputsLevel3Member 2025-03-31 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember 2025-03-31 0001321741 gain:PreferredEquityMember us-gaap:FairValueInputsLevel1Member 2025-03-31 0001321741 gain:PreferredEquityMember us-gaap:FairValueInputsLevel2Member 2025-03-31 0001321741 gain:PreferredEquityMember us-gaap:FairValueInputsLevel3Member 2025-03-31 0001321741 gain:PreferredEquityMember 2025-03-31 0001321741 gain:CommonEquityEquivalentsMember us-gaap:FairValueInputsLevel1Member 2025-03-31 0001321741 gain:CommonEquityEquivalentsMember us-gaap:FairValueInputsLevel2Member 2025-03-31 0001321741 gain:CommonEquityEquivalentsMember us-gaap:FairValueInputsLevel3Member 2025-03-31 0001321741 gain:CommonEquityEquivalentsMember 2025-03-31 0001321741 us-gaap:FairValueInputsLevel1Member 2025-03-31 0001321741 us-gaap:FairValueInputsLevel2Member 2025-03-31 0001321741 us-gaap:FairValueInputsLevel3Member 2025-03-31 0001321741 us-gaap:FairValueInputsLevel12And3Member 2025-03-31 0001321741 us-gaap:FairValueMeasuredAtNetAssetValuePerShareMember 2025-03-31 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:InvestmentUnaffiliatedIssuerMember 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:InvestmentUnaffiliatedIssuerMember 2025-03-31 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:InvestmentUnaffiliatedIssuerMember 2025-09-30 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:InvestmentUnaffiliatedIssuerMember 2025-03-31 0001321741 gain:PreferredEquityMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:InvestmentUnaffiliatedIssuerMember 2025-09-30 0001321741 gain:PreferredEquityMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:InvestmentUnaffiliatedIssuerMember 2025-03-31 0001321741 gain:CommonEquityEquivalentsMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:InvestmentUnaffiliatedIssuerMember 2025-09-30 0001321741 gain:CommonEquityEquivalentsMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:InvestmentUnaffiliatedIssuerMember 2025-03-31 0001321741 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:InvestmentUnaffiliatedIssuerMember 2025-09-30 0001321741 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:InvestmentUnaffiliatedIssuerMember 2025-03-31 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember 2025-03-31 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember 2025-09-30 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember 2025-03-31 0001321741 gain:PreferredEquityMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember 2025-09-30 0001321741 gain:PreferredEquityMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember 2025-03-31 0001321741 gain:CommonEquityEquivalentsMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember 2025-09-30 0001321741 gain:CommonEquityEquivalentsMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember 2025-03-31 0001321741 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember 2025-09-30 0001321741 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember 2025-03-31 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:InvestmentAffiliatedIssuerControlledMember 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:InvestmentAffiliatedIssuerControlledMember 2025-03-31 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:InvestmentAffiliatedIssuerControlledMember 2025-09-30 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:InvestmentAffiliatedIssuerControlledMember 2025-03-31 0001321741 gain:PreferredEquityMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:InvestmentAffiliatedIssuerControlledMember 2025-09-30 0001321741 gain:PreferredEquityMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:InvestmentAffiliatedIssuerControlledMember 2025-03-31 0001321741 gain:CommonEquityEquivalentsMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:InvestmentAffiliatedIssuerControlledMember 2025-09-30 0001321741 gain:CommonEquityEquivalentsMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:InvestmentAffiliatedIssuerControlledMember 2025-03-31 0001321741 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:InvestmentAffiliatedIssuerControlledMember 2025-09-30 0001321741 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member us-gaap:InvestmentAffiliatedIssuerControlledMember 2025-03-31 0001321741 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member 2025-09-30 0001321741 us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member 2025-03-31 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember 2025-03-31 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember us-gaap:MeasurementInputEbitdaMultipleMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MinimumMember 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember us-gaap:MeasurementInputEbitdaMultipleMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MaximumMember 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember us-gaap:MeasurementInputEbitdaMultipleMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:WeightedAverageMember 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember us-gaap:MeasurementInputEbitdaMultipleMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MinimumMember 2025-03-31 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember us-gaap:MeasurementInputEbitdaMultipleMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MaximumMember 2025-03-31 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember us-gaap:MeasurementInputEbitdaMultipleMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:WeightedAverageMember 2025-03-31 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:MeasurementInputEBITDAMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MinimumMember 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:MeasurementInputEBITDAMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MaximumMember 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:MeasurementInputEBITDAMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:WeightedAverageMember 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:MeasurementInputEBITDAMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MinimumMember 2025-03-31 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:MeasurementInputEBITDAMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MaximumMember 2025-03-31 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:MeasurementInputEBITDAMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:WeightedAverageMember 2025-03-31 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember us-gaap:MeasurementInputRevenueMultipleMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MinimumMember 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember us-gaap:MeasurementInputRevenueMultipleMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MaximumMember 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember us-gaap:MeasurementInputRevenueMultipleMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:WeightedAverageMember 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember us-gaap:MeasurementInputRevenueMultipleMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MinimumMember 2025-03-31 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember us-gaap:MeasurementInputRevenueMultipleMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MaximumMember 2025-03-31 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember us-gaap:MeasurementInputRevenueMultipleMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:WeightedAverageMember 2025-03-31 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:MeasurementInputRevenueMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MinimumMember 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:MeasurementInputRevenueMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MaximumMember 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:MeasurementInputRevenueMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:WeightedAverageMember 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:MeasurementInputRevenueMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MinimumMember 2025-03-31 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:MeasurementInputRevenueMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MaximumMember 2025-03-31 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:MeasurementInputRevenueMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:WeightedAverageMember 2025-03-31 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember 2025-09-30 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember 2025-03-31 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember us-gaap:MeasurementInputEbitdaMultipleMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MinimumMember 2025-09-30 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember us-gaap:MeasurementInputEbitdaMultipleMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MaximumMember 2025-09-30 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember us-gaap:MeasurementInputEbitdaMultipleMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:WeightedAverageMember 2025-09-30 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember us-gaap:MeasurementInputEbitdaMultipleMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MinimumMember 2025-03-31 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember us-gaap:MeasurementInputEbitdaMultipleMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MaximumMember 2025-03-31 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember us-gaap:MeasurementInputEbitdaMultipleMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:WeightedAverageMember 2025-03-31 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember gain:MeasurementInputEBITDAMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MinimumMember 2025-09-30 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember gain:MeasurementInputEBITDAMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MaximumMember 2025-09-30 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember gain:MeasurementInputEBITDAMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:WeightedAverageMember 2025-09-30 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember gain:MeasurementInputEBITDAMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MinimumMember 2025-03-31 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember gain:MeasurementInputEBITDAMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MaximumMember 2025-03-31 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember gain:MeasurementInputEBITDAMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:WeightedAverageMember 2025-03-31 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember us-gaap:FairValueInputsLevel3Member gain:YieldAnalysisMember 2025-09-30 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember us-gaap:FairValueInputsLevel3Member gain:YieldAnalysisMember 2025-03-31 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember us-gaap:MeasurementInputDiscountRateMember us-gaap:FairValueInputsLevel3Member gain:YieldAnalysisMember srt:MinimumMember 2025-03-31 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember us-gaap:MeasurementInputDiscountRateMember us-gaap:FairValueInputsLevel3Member gain:YieldAnalysisMember srt:MaximumMember 2025-03-31 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember us-gaap:MeasurementInputDiscountRateMember us-gaap:FairValueInputsLevel3Member gain:YieldAnalysisMember srt:WeightedAverageMember 2025-03-31 0001321741 gain:PreferredEquityMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember 2025-09-30 0001321741 gain:PreferredEquityMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember 2025-03-31 0001321741 gain:PreferredEquityMember us-gaap:MeasurementInputEbitdaMultipleMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MinimumMember 2025-09-30 0001321741 gain:PreferredEquityMember us-gaap:MeasurementInputEbitdaMultipleMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MaximumMember 2025-09-30 0001321741 gain:PreferredEquityMember us-gaap:MeasurementInputEbitdaMultipleMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:WeightedAverageMember 2025-09-30 0001321741 gain:PreferredEquityMember us-gaap:MeasurementInputEbitdaMultipleMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MinimumMember 2025-03-31 0001321741 gain:PreferredEquityMember us-gaap:MeasurementInputEbitdaMultipleMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MaximumMember 2025-03-31 0001321741 gain:PreferredEquityMember us-gaap:MeasurementInputEbitdaMultipleMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:WeightedAverageMember 2025-03-31 0001321741 gain:PreferredEquityMember gain:MeasurementInputEBITDAMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MinimumMember 2025-09-30 0001321741 gain:PreferredEquityMember gain:MeasurementInputEBITDAMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MaximumMember 2025-09-30 0001321741 gain:PreferredEquityMember gain:MeasurementInputEBITDAMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:WeightedAverageMember 2025-09-30 0001321741 gain:PreferredEquityMember gain:MeasurementInputEBITDAMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MinimumMember 2025-03-31 0001321741 gain:PreferredEquityMember gain:MeasurementInputEBITDAMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MaximumMember 2025-03-31 0001321741 gain:PreferredEquityMember gain:MeasurementInputEBITDAMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:WeightedAverageMember 2025-03-31 0001321741 gain:PreferredEquityMember us-gaap:MeasurementInputRevenueMultipleMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MinimumMember 2025-09-30 0001321741 gain:PreferredEquityMember us-gaap:MeasurementInputRevenueMultipleMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MaximumMember 2025-09-30 0001321741 gain:PreferredEquityMember us-gaap:MeasurementInputRevenueMultipleMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:WeightedAverageMember 2025-09-30 0001321741 gain:PreferredEquityMember us-gaap:MeasurementInputRevenueMultipleMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MinimumMember 2025-03-31 0001321741 gain:PreferredEquityMember us-gaap:MeasurementInputRevenueMultipleMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MaximumMember 2025-03-31 0001321741 gain:PreferredEquityMember us-gaap:MeasurementInputRevenueMultipleMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:WeightedAverageMember 2025-03-31 0001321741 gain:PreferredEquityMember gain:MeasurementInputRevenueMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MinimumMember 2025-09-30 0001321741 gain:PreferredEquityMember gain:MeasurementInputRevenueMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MaximumMember 2025-09-30 0001321741 gain:PreferredEquityMember gain:MeasurementInputRevenueMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:WeightedAverageMember 2025-09-30 0001321741 gain:PreferredEquityMember gain:MeasurementInputRevenueMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MinimumMember 2025-03-31 0001321741 gain:PreferredEquityMember gain:MeasurementInputRevenueMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MaximumMember 2025-03-31 0001321741 gain:PreferredEquityMember gain:MeasurementInputRevenueMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:WeightedAverageMember 2025-03-31 0001321741 gain:CommonEquityEquivalentsMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember 2025-09-30 0001321741 gain:CommonEquityEquivalentsMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember 2025-03-31 0001321741 gain:CommonEquityEquivalentsMember us-gaap:MeasurementInputEbitdaMultipleMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MinimumMember 2025-09-30 0001321741 gain:CommonEquityEquivalentsMember us-gaap:MeasurementInputEbitdaMultipleMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MaximumMember 2025-09-30 0001321741 gain:CommonEquityEquivalentsMember us-gaap:MeasurementInputEbitdaMultipleMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:WeightedAverageMember 2025-09-30 0001321741 gain:CommonEquityEquivalentsMember us-gaap:MeasurementInputEbitdaMultipleMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MinimumMember 2025-03-31 0001321741 gain:CommonEquityEquivalentsMember us-gaap:MeasurementInputEbitdaMultipleMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MaximumMember 2025-03-31 0001321741 gain:CommonEquityEquivalentsMember us-gaap:MeasurementInputEbitdaMultipleMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:WeightedAverageMember 2025-03-31 0001321741 gain:CommonEquityEquivalentsMember gain:MeasurementInputEBITDAMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MinimumMember 2025-09-30 0001321741 gain:CommonEquityEquivalentsMember gain:MeasurementInputEBITDAMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MaximumMember 2025-09-30 0001321741 gain:CommonEquityEquivalentsMember gain:MeasurementInputEBITDAMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:WeightedAverageMember 2025-09-30 0001321741 gain:CommonEquityEquivalentsMember gain:MeasurementInputEBITDAMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MinimumMember 2025-03-31 0001321741 gain:CommonEquityEquivalentsMember gain:MeasurementInputEBITDAMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:MaximumMember 2025-03-31 0001321741 gain:CommonEquityEquivalentsMember gain:MeasurementInputEBITDAMember us-gaap:FairValueInputsLevel3Member gain:TotalEnterpriseValueMember srt:WeightedAverageMember 2025-03-31 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember 2025-06-30 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember 2025-06-30 0001321741 gain:PreferredEquityMember 2025-06-30 0001321741 gain:CommonEquityEquivalentsMember 2025-06-30 0001321741 us-gaap:InvestmentsMember 2025-06-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:DebtAndEquitySecuritiesRealizedGainLossMember 2025-07-01 2025-09-30 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember gain:DebtAndEquitySecuritiesRealizedGainLossMember 2025-07-01 2025-09-30 0001321741 gain:PreferredEquityMember gain:DebtAndEquitySecuritiesRealizedGainLossMember 2025-07-01 2025-09-30 0001321741 gain:CommonEquityEquivalentsMember gain:DebtAndEquitySecuritiesRealizedGainLossMember 2025-07-01 2025-09-30 0001321741 us-gaap:InvestmentsMember gain:DebtAndEquitySecuritiesRealizedGainLossMember 2025-07-01 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:DebtAndEquitySecuritiesUnrealizedGainLossMember 2025-07-01 2025-09-30 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember gain:DebtAndEquitySecuritiesUnrealizedGainLossMember 2025-07-01 2025-09-30 0001321741 gain:PreferredEquityMember gain:DebtAndEquitySecuritiesUnrealizedGainLossMember 2025-07-01 2025-09-30 0001321741 gain:CommonEquityEquivalentsMember gain:DebtAndEquitySecuritiesUnrealizedGainLossMember 2025-07-01 2025-09-30 0001321741 us-gaap:InvestmentsMember gain:DebtAndEquitySecuritiesUnrealizedGainLossMember 2025-07-01 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember 2025-07-01 2025-09-30 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember 2025-07-01 2025-09-30 0001321741 gain:PreferredEquityMember 2025-07-01 2025-09-30 0001321741 gain:CommonEquityEquivalentsMember 2025-07-01 2025-09-30 0001321741 us-gaap:InvestmentsMember 2025-07-01 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember 2025-09-30 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember 2025-09-30 0001321741 gain:PreferredEquityMember 2025-09-30 0001321741 gain:CommonEquityEquivalentsMember 2025-09-30 0001321741 us-gaap:InvestmentsMember 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember 2025-03-31 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember 2025-03-31 0001321741 gain:PreferredEquityMember 2025-03-31 0001321741 gain:CommonEquityEquivalentsMember 2025-03-31 0001321741 us-gaap:InvestmentsMember 2025-03-31 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:DebtAndEquitySecuritiesRealizedGainLossMember 2025-04-01 2025-09-30 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember gain:DebtAndEquitySecuritiesRealizedGainLossMember 2025-04-01 2025-09-30 0001321741 gain:PreferredEquityMember gain:DebtAndEquitySecuritiesRealizedGainLossMember 2025-04-01 2025-09-30 0001321741 gain:CommonEquityEquivalentsMember gain:DebtAndEquitySecuritiesRealizedGainLossMember 2025-04-01 2025-09-30 0001321741 us-gaap:InvestmentsMember gain:DebtAndEquitySecuritiesRealizedGainLossMember 2025-04-01 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:DebtAndEquitySecuritiesUnrealizedGainLossMember 2025-04-01 2025-09-30 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember gain:DebtAndEquitySecuritiesUnrealizedGainLossMember 2025-04-01 2025-09-30 0001321741 gain:PreferredEquityMember gain:DebtAndEquitySecuritiesUnrealizedGainLossMember 2025-04-01 2025-09-30 0001321741 gain:CommonEquityEquivalentsMember gain:DebtAndEquitySecuritiesUnrealizedGainLossMember 2025-04-01 2025-09-30 0001321741 us-gaap:InvestmentsMember gain:DebtAndEquitySecuritiesUnrealizedGainLossMember 2025-04-01 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember 2025-04-01 2025-09-30 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember 2025-04-01 2025-09-30 0001321741 gain:PreferredEquityMember 2025-04-01 2025-09-30 0001321741 gain:CommonEquityEquivalentsMember 2025-04-01 2025-09-30 0001321741 us-gaap:InvestmentsMember 2025-04-01 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember 2024-06-30 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember 2024-06-30 0001321741 gain:PreferredEquityMember 2024-06-30 0001321741 gain:CommonEquityEquivalentsMember 2024-06-30 0001321741 us-gaap:InvestmentsMember 2024-06-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:DebtAndEquitySecuritiesRealizedGainLossMember 2024-07-01 2024-09-30 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember gain:DebtAndEquitySecuritiesRealizedGainLossMember 2024-07-01 2024-09-30 0001321741 gain:PreferredEquityMember gain:DebtAndEquitySecuritiesRealizedGainLossMember 2024-07-01 2024-09-30 0001321741 gain:CommonEquityEquivalentsMember gain:DebtAndEquitySecuritiesRealizedGainLossMember 2024-07-01 2024-09-30 0001321741 us-gaap:InvestmentsMember gain:DebtAndEquitySecuritiesRealizedGainLossMember 2024-07-01 2024-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:DebtAndEquitySecuritiesUnrealizedGainLossMember 2024-07-01 2024-09-30 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember gain:DebtAndEquitySecuritiesUnrealizedGainLossMember 2024-07-01 2024-09-30 0001321741 gain:PreferredEquityMember gain:DebtAndEquitySecuritiesUnrealizedGainLossMember 2024-07-01 2024-09-30 0001321741 gain:CommonEquityEquivalentsMember gain:DebtAndEquitySecuritiesUnrealizedGainLossMember 2024-07-01 2024-09-30 0001321741 us-gaap:InvestmentsMember gain:DebtAndEquitySecuritiesUnrealizedGainLossMember 2024-07-01 2024-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember 2024-07-01 2024-09-30 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember 2024-07-01 2024-09-30 0001321741 gain:PreferredEquityMember 2024-07-01 2024-09-30 0001321741 gain:CommonEquityEquivalentsMember 2024-07-01 2024-09-30 0001321741 us-gaap:InvestmentsMember 2024-07-01 2024-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember 2024-09-30 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember 2024-09-30 0001321741 gain:PreferredEquityMember 2024-09-30 0001321741 gain:CommonEquityEquivalentsMember 2024-09-30 0001321741 us-gaap:InvestmentsMember 2024-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember 2024-03-31 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember 2024-03-31 0001321741 gain:PreferredEquityMember 2024-03-31 0001321741 gain:CommonEquityEquivalentsMember 2024-03-31 0001321741 us-gaap:InvestmentsMember 2024-03-31 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:DebtAndEquitySecuritiesRealizedGainLossMember 2024-04-01 2024-09-30 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember gain:DebtAndEquitySecuritiesRealizedGainLossMember 2024-04-01 2024-09-30 0001321741 gain:PreferredEquityMember gain:DebtAndEquitySecuritiesRealizedGainLossMember 2024-04-01 2024-09-30 0001321741 gain:CommonEquityEquivalentsMember gain:DebtAndEquitySecuritiesRealizedGainLossMember 2024-04-01 2024-09-30 0001321741 us-gaap:InvestmentsMember gain:DebtAndEquitySecuritiesRealizedGainLossMember 2024-04-01 2024-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:DebtAndEquitySecuritiesUnrealizedGainLossMember 2024-04-01 2024-09-30 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember gain:DebtAndEquitySecuritiesUnrealizedGainLossMember 2024-04-01 2024-09-30 0001321741 gain:PreferredEquityMember gain:DebtAndEquitySecuritiesUnrealizedGainLossMember 2024-04-01 2024-09-30 0001321741 gain:CommonEquityEquivalentsMember gain:DebtAndEquitySecuritiesUnrealizedGainLossMember 2024-04-01 2024-09-30 0001321741 us-gaap:InvestmentsMember gain:DebtAndEquitySecuritiesUnrealizedGainLossMember 2024-04-01 2024-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember 2024-04-01 2024-09-30 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember 2024-04-01 2024-09-30 0001321741 gain:PreferredEquityMember 2024-04-01 2024-09-30 0001321741 gain:CommonEquityEquivalentsMember 2024-04-01 2024-09-30 0001321741 us-gaap:InvestmentsMember 2024-04-01 2024-09-30 0001321741 gain:PSIMoldedPlasticsInc.Member gain:DebtSecuritiesSecuredSecondLienDebtMember 2025-09-30 0001321741 gain:SmartChemicalSolutionsLLCSmartChemicalMember 2025-05-01 2025-05-31 0001321741 gain:SmartChemicalSolutionsLLCSmartChemicalMember gain:DebtSecuritiesSecuredFirstLienDebtMember 2025-05-01 2025-05-31 0001321741 gain:SmartChemicalSolutionsLLCSmartChemicalMember gain:PreferredEquityMember 2025-05-01 2025-05-31 0001321741 gain:SunStateNurseryAndLandscapingLLCSunStateMember 2025-05-01 2025-05-31 0001321741 gain:SunStateNurseryAndLandscapingLLCSunStateMember gain:DebtSecuritiesSecuredFirstLienDebtMember 2025-05-01 2025-05-31 0001321741 gain:SunStateNurseryAndLandscapingLLCSunStateMember gain:PreferredEquityMember 2025-05-01 2025-05-31 0001321741 gain:PSIMoldedPlasticsInc.Member 2025-06-30 0001321741 gain:GlobalGRABTechnologiesInc.GlobalGRABMember 2025-07-01 2025-07-31 0001321741 gain:GlobalGRABTechnologiesInc.GlobalGRABMember gain:DebtSecuritiesSecuredFirstLienDebtMember 2025-07-01 2025-07-31 0001321741 gain:GlobalGRABTechnologiesInc.GlobalGRABMember gain:PreferredEquityMember 2025-07-01 2025-07-31 0001321741 gain:FiveLargestPortfolioInvestmentsMember us-gaap:CustomerConcentrationRiskMember gain:InvestmentPortfolioBenchmarkMember 2025-09-30 0001321741 gain:FiveLargestPortfolioInvestmentsMember us-gaap:CustomerConcentrationRiskMember gain:InvestmentPortfolioBenchmarkMember 2025-04-01 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:InvestmentTypeConcentrationRiskMember gain:InvestmentOwnedAtCostMember 2025-04-01 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:InvestmentTypeConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2025-04-01 2025-09-30 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember 2025-03-31 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:InvestmentTypeConcentrationRiskMember gain:InvestmentOwnedAtCostMember 2024-04-01 2025-03-31 0001321741 gain:DebtSecuritiesSecuredFirstLienDebtMember gain:InvestmentTypeConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2024-04-01 2025-03-31 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember 2025-09-30 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember gain:InvestmentTypeConcentrationRiskMember gain:InvestmentOwnedAtCostMember 2025-04-01 2025-09-30 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember gain:InvestmentTypeConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2025-04-01 2025-09-30 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember 2025-03-31 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember gain:InvestmentTypeConcentrationRiskMember gain:InvestmentOwnedAtCostMember 2024-04-01 2025-03-31 0001321741 gain:DebtSecuritiesSecuredSecondLienDebtMember gain:InvestmentTypeConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2024-04-01 2025-03-31 0001321741 us-gaap:DebtSecuritiesMember 2025-09-30 0001321741 us-gaap:DebtSecuritiesMember gain:InvestmentTypeConcentrationRiskMember gain:InvestmentOwnedAtCostMember 2025-04-01 2025-09-30 0001321741 us-gaap:DebtSecuritiesMember gain:InvestmentTypeConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2025-04-01 2025-09-30 0001321741 us-gaap:DebtSecuritiesMember 2025-03-31 0001321741 us-gaap:DebtSecuritiesMember gain:InvestmentTypeConcentrationRiskMember gain:InvestmentOwnedAtCostMember 2024-04-01 2025-03-31 0001321741 us-gaap:DebtSecuritiesMember gain:InvestmentTypeConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2024-04-01 2025-03-31 0001321741 gain:PreferredEquityMember 2025-09-30 0001321741 gain:PreferredEquityMember gain:InvestmentTypeConcentrationRiskMember gain:InvestmentOwnedAtCostMember 2025-04-01 2025-09-30 0001321741 gain:PreferredEquityMember gain:InvestmentTypeConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2025-04-01 2025-09-30 0001321741 gain:PreferredEquityMember 2025-03-31 0001321741 gain:PreferredEquityMember gain:InvestmentTypeConcentrationRiskMember gain:InvestmentOwnedAtCostMember 2024-04-01 2025-03-31 0001321741 gain:PreferredEquityMember gain:InvestmentTypeConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2024-04-01 2025-03-31 0001321741 gain:CommonEquityEquivalentsMember 2025-09-30 0001321741 gain:CommonEquityEquivalentsMember gain:InvestmentTypeConcentrationRiskMember gain:InvestmentOwnedAtCostMember 2025-04-01 2025-09-30 0001321741 gain:CommonEquityEquivalentsMember gain:InvestmentTypeConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2025-04-01 2025-09-30 0001321741 gain:CommonEquityEquivalentsMember 2025-03-31 0001321741 gain:CommonEquityEquivalentsMember gain:InvestmentTypeConcentrationRiskMember gain:InvestmentOwnedAtCostMember 2024-04-01 2025-03-31 0001321741 gain:CommonEquityEquivalentsMember gain:InvestmentTypeConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2024-04-01 2025-03-31 0001321741 us-gaap:EquitySecuritiesMember 2025-09-30 0001321741 us-gaap:EquitySecuritiesMember gain:InvestmentTypeConcentrationRiskMember gain:InvestmentOwnedAtCostMember 2025-04-01 2025-09-30 0001321741 us-gaap:EquitySecuritiesMember gain:InvestmentTypeConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2025-04-01 2025-09-30 0001321741 us-gaap:EquitySecuritiesMember 2025-03-31 0001321741 us-gaap:EquitySecuritiesMember gain:InvestmentTypeConcentrationRiskMember gain:InvestmentOwnedAtCostMember 2024-04-01 2025-03-31 0001321741 us-gaap:EquitySecuritiesMember gain:InvestmentTypeConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2024-04-01 2025-03-31 0001321741 gain:InvestmentTypeConcentrationRiskMember gain:InvestmentOwnedAtCostMember 2025-04-01 2025-09-30 0001321741 gain:InvestmentTypeConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2025-04-01 2025-09-30 0001321741 gain:InvestmentTypeConcentrationRiskMember gain:InvestmentOwnedAtCostMember 2024-04-01 2025-03-31 0001321741 gain:InvestmentTypeConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2024-04-01 2025-03-31 0001321741 gain:DiversifiedConglomerateServicesMember 2025-09-30 0001321741 gain:DiversifiedConglomerateServicesMember gain:IndustryConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2025-04-01 2025-09-30 0001321741 gain:DiversifiedConglomerateServicesMember 2025-03-31 0001321741 gain:DiversifiedConglomerateServicesMember gain:IndustryConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2024-04-01 2025-03-31 0001321741 gain:AerospaceAndDefenseMember 2025-09-30 0001321741 gain:AerospaceAndDefenseMember gain:IndustryConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2025-04-01 2025-09-30 0001321741 gain:AerospaceAndDefenseMember 2025-03-31 0001321741 gain:AerospaceAndDefenseMember gain:IndustryConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2024-04-01 2025-03-31 0001321741 gain:HomeAndOfficeFurnishingsHousewaresAndDurableConsumerProductsMember 2025-09-30 0001321741 gain:HomeAndOfficeFurnishingsHousewaresAndDurableConsumerProductsMember gain:IndustryConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2025-04-01 2025-09-30 0001321741 gain:HomeAndOfficeFurnishingsHousewaresAndDurableConsumerProductsMember 2025-03-31 0001321741 gain:HomeAndOfficeFurnishingsHousewaresAndDurableConsumerProductsMember gain:IndustryConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2024-04-01 2025-03-31 0001321741 gain:MachineryNonAgricultureNonConstructionAndNonElectronicMember 2025-09-30 0001321741 gain:MachineryNonAgricultureNonConstructionAndNonElectronicMember gain:IndustryConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2025-04-01 2025-09-30 0001321741 gain:MachineryNonAgricultureNonConstructionAndNonElectronicMember 2025-03-31 0001321741 gain:MachineryNonAgricultureNonConstructionAndNonElectronicMember gain:IndustryConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2024-04-01 2025-03-31 0001321741 gain:LeisureAmusementMotionPicturesAndEntertainmentMember 2025-09-30 0001321741 gain:LeisureAmusementMotionPicturesAndEntertainmentMember gain:IndustryConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2025-04-01 2025-09-30 0001321741 gain:LeisureAmusementMotionPicturesAndEntertainmentMember 2025-03-31 0001321741 gain:LeisureAmusementMotionPicturesAndEntertainmentMember gain:IndustryConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2024-04-01 2025-03-31 0001321741 gain:OilAndGas1Member 2025-09-30 0001321741 gain:OilAndGas1Member gain:IndustryConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2025-04-01 2025-09-30 0001321741 gain:OilAndGas1Member 2025-03-31 0001321741 gain:OilAndGas1Member gain:IndustryConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2024-04-01 2025-03-31 0001321741 gain:BuildingsAndRealEstateMember 2025-09-30 0001321741 gain:BuildingsAndRealEstateMember gain:IndustryConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2025-04-01 2025-09-30 0001321741 gain:BuildingsAndRealEstateMember 2025-03-31 0001321741 gain:BuildingsAndRealEstateMember gain:IndustryConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2024-04-01 2025-03-31 0001321741 gain:ElectronicsMember 2025-09-30 0001321741 gain:ElectronicsMember gain:IndustryConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2025-04-01 2025-09-30 0001321741 gain:ElectronicsMember 2025-03-31 0001321741 gain:ElectronicsMember gain:IndustryConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2024-04-01 2025-03-31 0001321741 gain:ChemicalsPlasticsAndRubberMember 2025-09-30 0001321741 gain:ChemicalsPlasticsAndRubberMember gain:IndustryConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2025-04-01 2025-09-30 0001321741 gain:ChemicalsPlasticsAndRubberMember 2025-03-31 0001321741 gain:ChemicalsPlasticsAndRubberMember gain:IndustryConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2024-04-01 2025-03-31 0001321741 gain:HealthcareEducationAndChildcareMember 2025-09-30 0001321741 gain:HealthcareEducationAndChildcareMember gain:IndustryConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2025-04-01 2025-09-30 0001321741 gain:HealthcareEducationAndChildcareMember 2025-03-31 0001321741 gain:HealthcareEducationAndChildcareMember gain:IndustryConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2024-04-01 2025-03-31 0001321741 gain:MiningSteelIronAndNonPreciousMetalsTotalMember 2025-09-30 0001321741 gain:MiningSteelIronAndNonPreciousMetalsTotalMember gain:IndustryConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2025-04-01 2025-09-30 0001321741 gain:MiningSteelIronAndNonPreciousMetalsTotalMember 2025-03-31 0001321741 gain:MiningSteelIronAndNonPreciousMetalsTotalMember gain:IndustryConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2024-04-01 2025-03-31 0001321741 gain:PrintingAndPublishingMember 2025-09-30 0001321741 gain:PrintingAndPublishingMember gain:IndustryConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2025-04-01 2025-09-30 0001321741 gain:PrintingAndPublishingMember 2025-03-31 0001321741 gain:PrintingAndPublishingMember gain:IndustryConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2024-04-01 2025-03-31 0001321741 gain:CargoTransportMember 2025-09-30 0001321741 gain:CargoTransportMember gain:IndustryConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2025-04-01 2025-09-30 0001321741 gain:CargoTransportMember 2025-03-31 0001321741 gain:CargoTransportMember gain:IndustryConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2024-04-01 2025-03-31 0001321741 gain:OtherSectorsMember 2025-09-30 0001321741 gain:OtherSectorsMember gain:IndustryConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2025-04-01 2025-09-30 0001321741 gain:OtherSectorsMember 2025-03-31 0001321741 gain:OtherSectorsMember gain:IndustryConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2024-04-01 2025-03-31 0001321741 gain:IndustryConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2025-04-01 2025-09-30 0001321741 gain:IndustryConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2024-04-01 2025-03-31 0001321741 us-gaap:SouthRegionMember 2025-09-30 0001321741 us-gaap:SouthRegionMember gain:GeographicRegionsConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2025-04-01 2025-09-30 0001321741 us-gaap:SouthRegionMember 2025-03-31 0001321741 us-gaap:SouthRegionMember gain:GeographicRegionsConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2024-04-01 2025-03-31 0001321741 us-gaap:WestRegionMember 2025-09-30 0001321741 us-gaap:WestRegionMember gain:GeographicRegionsConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2025-04-01 2025-09-30 0001321741 us-gaap:WestRegionMember 2025-03-31 0001321741 us-gaap:WestRegionMember gain:GeographicRegionsConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2024-04-01 2025-03-31 0001321741 us-gaap:MidwestRegionMember 2025-09-30 0001321741 us-gaap:MidwestRegionMember gain:GeographicRegionsConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2025-04-01 2025-09-30 0001321741 us-gaap:MidwestRegionMember 2025-03-31 0001321741 us-gaap:MidwestRegionMember gain:GeographicRegionsConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2024-04-01 2025-03-31 0001321741 us-gaap:NortheastRegionMember 2025-09-30 0001321741 us-gaap:NortheastRegionMember gain:GeographicRegionsConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2025-04-01 2025-09-30 0001321741 us-gaap:NortheastRegionMember 2025-03-31 0001321741 us-gaap:NortheastRegionMember gain:GeographicRegionsConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2024-04-01 2025-03-31 0001321741 country:CA 2025-09-30 0001321741 country:CA gain:GeographicRegionsConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2025-04-01 2025-09-30 0001321741 country:CA 2025-03-31 0001321741 country:CA gain:GeographicRegionsConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2024-04-01 2025-03-31 0001321741 gain:GeographicRegionsConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2025-04-01 2025-09-30 0001321741 gain:GeographicRegionsConcentrationRiskMember gain:InvestmentOwnedAtFairValueMember 2024-04-01 2025-03-31 0001321741 gain:TheAdviserMember us-gaap:RelatedPartyMember srt:ChiefExecutiveOfficerMember 2025-09-30 0001321741 srt:AffiliatedEntityMember srt:MinimumMember gain:AdvisoryAgreementMember 2025-04-01 2025-09-30 0001321741 gain:AdvisoryAgreementMember srt:AffiliatedEntityMember 2025-04-01 2025-09-30 0001321741 gain:AdvisoryAgreementMember srt:AffiliatedEntityMember 2025-09-30 0001321741 2024-04-01 2025-03-31 0001321741 gain:TheAdministratorMember us-gaap:RelatedPartyMember srt:ChiefExecutiveOfficerMember 2025-09-30 0001321741 gain:GladstoneSecuritiesLLCMember us-gaap:RelatedPartyMember srt:ChiefExecutiveOfficerMember 2025-09-30 0001321741 us-gaap:RelatedPartyMember 2025-07-01 2025-09-30 0001321741 us-gaap:RelatedPartyMember 2025-04-01 2025-09-30 0001321741 us-gaap:RelatedPartyMember 2024-04-01 2024-09-30 0001321741 us-gaap:RelatedPartyMember 2024-07-01 2024-09-30 0001321741 gain:BaseManagementFeeAndLoanServicingFeeDueToAdviserMember us-gaap:RelatedPartyMember 2025-09-30 0001321741 gain:BaseManagementFeeAndLoanServicingFeeDueToAdviserMember us-gaap:RelatedPartyMember 2025-03-31 0001321741 gain:IncentiveFeeDueToAdviserMember us-gaap:RelatedPartyMember 2025-09-30 0001321741 gain:IncentiveFeeDueToAdviserMember us-gaap:RelatedPartyMember 2025-03-31 0001321741 gain:OtherDueToAdviserMember us-gaap:RelatedPartyMember 2025-09-30 0001321741 gain:OtherDueToAdviserMember us-gaap:RelatedPartyMember 2025-03-31 0001321741 us-gaap:RelatedPartyMember 2025-09-30 0001321741 us-gaap:RelatedPartyMember 2025-03-31 0001321741 us-gaap:RevolvingCreditFacilityMember gain:RevolvingLineOfCreditMember us-gaap:LineOfCreditMember 2025-09-30 0001321741 us-gaap:RevolvingCreditFacilityMember gain:RevolvingLineOfCreditMember us-gaap:LineOfCreditMember 2025-04-01 2025-09-30 0001321741 us-gaap:RevolvingCreditFacilityMember gain:SecuredOvernightFinancingRateSOFRAdjustmentMember gain:RevolvingLineOfCreditMember us-gaap:LineOfCreditMember 2025-04-01 2025-09-30 0001321741 us-gaap:RevolvingCreditFacilityMember gain:SecuredOvernightFinancingRateSOFRTrancheOneMember gain:RevolvingLineOfCreditMember us-gaap:LineOfCreditMember 2025-04-01 2025-09-30 0001321741 us-gaap:RevolvingCreditFacilityMember gain:SecuredOvernightFinancingRateSOFRTrancheTwoMember gain:RevolvingLineOfCreditMember us-gaap:LineOfCreditMember 2025-04-01 2025-09-30 0001321741 us-gaap:RevolvingCreditFacilityMember gain:SecuredOvernightFinancingRateSOFRThereafterMember gain:RevolvingLineOfCreditMember us-gaap:LineOfCreditMember 2025-04-01 2025-09-30 0001321741 us-gaap:RevolvingCreditFacilityMember gain:LessThanOrEqualTo50OfCommitmentMember gain:RevolvingLineOfCreditMember us-gaap:LineOfCreditMember 2025-04-01 2025-09-30 0001321741 us-gaap:RevolvingCreditFacilityMember gain:GreaterThan50ButLessThanOrEqualTo65OfCommitmentMember gain:RevolvingLineOfCreditMember us-gaap:LineOfCreditMember 2025-04-01 2025-09-30 0001321741 us-gaap:RevolvingCreditFacilityMember gain:GreaterThan65OfCommitmentMember gain:RevolvingLineOfCreditMember us-gaap:LineOfCreditMember 2025-04-01 2025-09-30 0001321741 us-gaap:RevolvingCreditFacilityMember gain:RevolvingLineOfCreditMember us-gaap:LineOfCreditMember 2025-03-31 0001321741 us-gaap:RevolvingCreditFacilityMember gain:RevolvingLineOfCreditMember us-gaap:LineOfCreditMember 2025-07-01 2025-09-30 0001321741 us-gaap:RevolvingCreditFacilityMember gain:RevolvingLineOfCreditMember us-gaap:LineOfCreditMember 2024-07-01 2024-09-30 0001321741 us-gaap:RevolvingCreditFacilityMember gain:RevolvingLineOfCreditMember us-gaap:LineOfCreditMember 2024-04-01 2024-09-30 0001321741 us-gaap:RevolvingCreditFacilityMember gain:RevolvingLineOfCreditMember srt:MinimumMember us-gaap:LineOfCreditMember 2025-09-30 0001321741 us-gaap:RevolvingCreditFacilityMember us-gaap:LineOfCreditMember 2025-04-01 2025-09-30 0001321741 us-gaap:RevolvingCreditFacilityMember gain:RevolvingLineOfCreditMember us-gaap:LineOfCreditMember 2024-04-01 2025-03-31 0001321741 us-gaap:RevolvingCreditFacilityMember us-gaap:LineOfCreditMember 2024-04-01 2025-03-31 0001321741 us-gaap:LongTermDebtMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member 2025-06-30 0001321741 us-gaap:LongTermDebtMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member 2025-07-01 2025-09-30 0001321741 us-gaap:LongTermDebtMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member 2025-09-30 0001321741 us-gaap:LongTermDebtMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member 2025-03-31 0001321741 us-gaap:LongTermDebtMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member 2025-04-01 2025-09-30 0001321741 us-gaap:LongTermDebtMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member 2024-06-30 0001321741 us-gaap:LongTermDebtMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member 2024-07-01 2024-09-30 0001321741 us-gaap:LongTermDebtMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member 2024-09-30 0001321741 us-gaap:LongTermDebtMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member 2024-03-31 0001321741 us-gaap:LongTermDebtMember us-gaap:FairValueMeasurementsRecurringMember us-gaap:FairValueInputsLevel3Member 2024-04-01 2024-09-30 0001321741 gain:A500NotesDue2026Member us-gaap:NotesPayableOtherPayablesMember 2021-03-31 0001321741 gain:A500NotesDue2026Member us-gaap:NotesPayableOtherPayablesMember 2021-03-01 2021-03-31 0001321741 gain:A4875NotesDue2028Member us-gaap:NotesPayableOtherPayablesMember 2021-08-31 0001321741 gain:A4875NotesDue2028Member us-gaap:NotesPayableOtherPayablesMember 2021-08-01 2021-08-31 0001321741 gain:A800NotesDue2028Member us-gaap:NotesPayableOtherPayablesMember 2023-05-31 0001321741 gain:A800NotesDue2028Member us-gaap:NotesPayableOtherPayablesMember 2023-05-01 2023-05-31 0001321741 gain:A7.875NotesDue2030Member us-gaap:NotesPayableOtherPayablesMember 2024-12-31 0001321741 gain:A7.875NotesDue2030Member us-gaap:NotesPayableOtherPayablesMember 2024-12-01 2024-12-31 0001321741 gain:A500NotesDue2026Member us-gaap:NotesPayableOtherPayablesMember 2025-09-30 0001321741 gain:A4875NotesDue2028Member us-gaap:NotesPayableOtherPayablesMember 2025-09-30 0001321741 gain:A800NotesDue2028Member us-gaap:NotesPayableOtherPayablesMember 2025-09-30 0001321741 gain:A7.875NotesDue2030Member us-gaap:NotesPayableOtherPayablesMember 2025-09-30 0001321741 us-gaap:NotesPayableOtherPayablesMember 2025-09-30 0001321741 gain:A500NotesDue2026Member us-gaap:NotesPayableOtherPayablesMember 2025-03-31 0001321741 gain:A4875NotesDue2028Member us-gaap:NotesPayableOtherPayablesMember 2025-03-31 0001321741 gain:A800NotesDue2028Member us-gaap:NotesPayableOtherPayablesMember 2025-03-31 0001321741 gain:A7.875NotesDue2030Member us-gaap:NotesPayableOtherPayablesMember 2025-03-31 0001321741 us-gaap:NotesPayableOtherPayablesMember 2025-03-31 0001321741 gain:RegistrationStatementOnFormN2FileNo.333277452Member 2024-02-28 0001321741 gain:RegistrationStatementOnFormN2FileNo.333277452Member 2025-09-30 0001321741 gain:CommonStockATMProgram2024Member 2024-05-31 0001321741 gain:CommonStockATMProgram2024Member 2025-09-30 0001321741 gain:CommonStockATMProgram2022Member 2022-08-31 0001321741 gain:CommonStockATMProgram2022Member 2024-04-01 2024-09-30 0001321741 gain:CommonStockATMProgramMember 2025-07-01 2025-09-30 0001321741 gain:CommonStockATMProgramMember 2025-04-01 2025-09-30 0001321741 2024-12-31 0001321741 gain:O2025M1DividendsMember 2025-04-01 2025-09-30 0001321741 gain:O2025M2DividendsMember 2025-04-01 2025-09-30 0001321741 gain:O2025M3DividendsMember 2025-04-01 2025-09-30 0001321741 gain:O2025M4DividendsMember 2025-04-01 2025-09-30 0001321741 gain:O2025M5DividendsMember 2025-04-01 2025-09-30 0001321741 gain:O2025M6DividendsMember 2025-04-01 2025-09-30 0001321741 gain:O2024M1DividendsMember 2024-04-01 2024-09-30 0001321741 gain:O2024M2DividendsMember 2024-04-01 2024-09-30 0001321741 gain:O2024M3DividendsMember 2024-04-01 2024-09-30 0001321741 gain:O2024M4DividendsMember 2024-04-01 2024-09-30 0001321741 gain:O2024M5DividendsMember 2024-04-01 2024-09-30 0001321741 gain:O2024M6DividendsMember 2024-04-01 2024-09-30 0001321741 us-gaap:UnusedLinesOfCreditMember 2025-09-30 0001321741 us-gaap:UnusedLinesOfCreditMember 2025-03-31 0001321741 gain:O2025M1DividendsMember us-gaap:SubsequentEventMember 2025-10-01 2025-10-31 0001321741 gain:O2025M2DividendsMember us-gaap:SubsequentEventMember 2025-10-01 2025-10-31 0001321741 gain:O2025M3DividendsMember us-gaap:SubsequentEventMember 2025-10-01 2025-10-31 0001321741 us-gaap:SubsequentEventMember 2025-10-01 2025-10-31 0001321741 gain:CommonStockATMProgramMember us-gaap:SubsequentEventMember 2025-10-01 2025-11-04 0001321741 gain:RevolvingLineOfCreditMember 2025-04-01 2025-09-30 0001321741 gain:A500NotesDue2026Member 2025-04-01 2025-09-30 0001321741 gain:A4875NotesDue2028Member 2025-04-01 2025-09-30 0001321741 gain:A800NotesDue2028Member 2025-04-01 2025-09-30 0001321741 gain:A7.875NotesDue2030Member 2025-04-01 2025-09-30
Table of Contents

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
FORM 10-Q
(Mark One)

x | QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended September 30, 2025
OR

o | TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from to
Commission file number: 814-00704
GLADSTONE INVESTMENT CORPORATION
(Exact name of registrant as specified in its charter)

Delaware |  | 83-0423116
(State or other jurisdiction of incorporation or organization) |  | (I.R.S. Employer Identification No.)
1521 WESTBRANCH DRIVE, SUITE 100 |  | 22102
MCLEAN, VA |  | (Zip Code)
(Address of principal executive offices) |  |

(703) 287-5800
(Registrant’s telephone number, including area code)
Not Applicable
(Former name, former address and former fiscal year,
if changed since last report)
Securities registered pursuant to Section 12(b) of the Act:

Title of Each Class |  | Trading Symbol(s) |  | Name of Each Exchange on Which Registered
Common Stock, $0.001 par value per share |  | GAIN |  | The Nasdaq Stock Market LLC
5.00% Notes due 2026 |  | GAINN |  | The Nasdaq Stock Market LLC
4.875% Notes due 2028 |  | GAINZ |  | The Nasdaq Stock Market LLC
8.00% Notes due 2028 |  | GAINL |  | The Nasdaq Stock Market LLC
7.875% Notes due 2030 |  | GAINI |  | The Nasdaq Stock Market LLC

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes x No o
Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes x No o
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer | o | Accelerated filer | o
Non-accelerated filer | x | Smaller reporting company | o
Emerging growth company | o |  |

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes o No x
The number of shares of the issuer’s Common Stock, $0.001 par value per share, outstanding as of November 3, 2025 was 39,646,451.

Table of Contents
GLADSTONE INVESTMENT CORPORATION
TABLE OF CONTENTS

PART I. | FINANCIAL INFORMATION: |
Item 1. | Financial Statements (Unaudited) |
| Consolidated Statements of Assets and Liabilities as of September 30, 2025 and March 31, 2025 | 2
| Consolidated Statements of Operations for the three and six months ended September 30, 2025 and 2024 | 3
| Consolidated Statements of Changes in Net Assets for the three and six months ended September 30, 2025 and 2024 | 4
| Consolidated Statements of Cash Flows for the six months ended September 30, 2025 and 2024 | 5
| Consolidated Schedules of Investments as of September 30, 2025 and March 31, 2025 | 6
| Notes to Consolidated Financial Statements | 16
Item 2. | Management’s Discussion and Analysis of Financial Condition and Results of Operations |
| Overview | 45
| Results of Operations | 48
| Liquidity and Capital Resources | 58
Item 3. | Quantitative and Qualitative Disclosures About Market Risk | 66
Item 4. | Controls and Procedures | 66
PART II. | OTHER INFORMATION: |
Item 1. | Legal Proceedings | 67
Item 1A. | Risk Factors | 67
Item 2. | Unregistered Sales of Equity Securities and Use of Proceeds | 67
Item 3. | Defaults Upon Senior Securities | 67
Item 4. | Mine Safety Disclosures | 67
Item 5. | Other Information | 67
Item 6. | Exhibits | 68
SIGNATURE | 69

Table of Contents
PART I - FINANCIAL INFORMATION
ITEM 1. FINANCIAL STATEMENTS
GLADSTONE INVESTMENT CORPORATION
CONSOLIDATED STATEMENTS OF ASSETS AND LIABILITIES
(DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
(UNAUDITED)

| September 30, 2025 |  | March 31, 2025
ASSETS |  |  |
Investments at fair value |  |  |
Non-Control/Non-Affiliate investments (Cost of $693,893 and $562,371, respectively) | $ | 812,538 |  |  | $ | 648,589 |
Affiliate investments (Cost of $325,898 and $359,286, respectively) | 317,551 |  |  | 330,388 |
Control investments (Cost of $17,409 and $17,409, respectively) | 770 |  |  | 343 |
Cash | 210 |  |  | 12,944 |
Cash equivalents | 1,217 |  |  | 1,354 |
Restricted cash | 810 |  |  | 856 |
Interest receivable | 6,123 |  |  | 5,582 |
Due from administrative agent | 2,382 |  |  | 2,891 |
Deferred financing costs, net | 1,030 |  |  | 1,471 |
Other assets, net | 1,808 |  |  | 1,986 |
TOTAL ASSETS | $ | 1,144,439 |  |  | $ | 1,006,404 |
LIABILITIES |  |  |
Borrowings: |  |  |
Line of credit at fair value (Cost of $97,700 and $0, respectively) | $ | 98,053 |  |  | $ | — |
Notes payable, net | 456,978 |  |  | 455,709 |
Total borrowings | 555,031 |  |  | 455,709 |
Accounts payable and accrued expenses | 883 |  |  | 1,291 |
Interest payable | 5,267 |  |  | 4,879 |
Fees due to Adviser(A) | 46,062 |  |  | 43,817 |
Fee due to Administrator(A) | 527 |  |  | 767 |
Other liabilities | 826 |  |  | 857 |
TOTAL LIABILITIES | $ | 608,596 |  |  | $ | 507,320 |
Commitments and contingencies(B) |  |  |
NET ASSETS | $ | 535,843 |  |  | $ | 499,084 |
ANALYSIS OF NET ASSETS |  |  |
Common stock, $0.001 par value per share, 100,000,000 shares authorized, 39,591,037 and 36,837,381 shares issued and outstanding, respectively | $ | 40 |  |  | $ | 37 |
Capital in excess of par value | 483,554 |  |  | 445,512 |
Cumulative net unrealized appreciation of investments | 93,659 |  |  | 40,254 |
Cumulative net unrealized appreciation of other | (353) |  |  | — |
Overdistributed net investment income | (20,095) |  |  | (5,325) |
Accumulated net realized (loss) gain in excess of distributions | (20,962) |  |  | 18,606 |
Total distributable earnings | 52,249 |  |  | 53,535 |
TOTAL NET ASSETS | $ | 535,843 |  |  | $ | 499,084 |
NET ASSET VALUE PER SHARE | $ | 13.53 |  |  | $ | 13.55 |

(A)Refer to Note 4 — Related Party Transactions in the accompanying Notes to Consolidated Financial Statements for additional information.
(B)Refer to Note 9 — Commitments and Contingencies in the accompanying Notes to Consolidated Financial Statements for additional information.
THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONSOLIDATED FINANCIAL STATEMENTS.
2

Table of Contents
GLADSTONE INVESTMENT CORPORATION
CONSOLIDATED STATEMENTS OF OPERATIONS
(DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
(UNAUDITED)

| Three Months Ended September 30, |  | Six Months Ended September 30,
| 2025 |  | 2024 |  | 2025 |  | 2024
INVESTMENT INCOME |  |  |  |  |  |  |
Interest income |  |  |  |  |  |  |
Non-Control/Non-Affiliate investments | $ | 16,076 |  |  | $ | 15,105 |  |  | $ | 31,339 |  |  | $ | 29,647 |
Affiliate investments | 6,501 |  |  | 5,834 |  |  | 12,688 |  |  | 11,874 |
Cash and cash equivalents | 92 |  |  | 57 |  |  | 290 |  |  | 100 |
Total interest income | 22,669 |  |  | 20,996 |  |  | 44,317 |  |  | 41,621 |
Dividend income |  |  |  |  |  |  |
Non-Control/Non-Affiliate investments | — |  |  | 1,419 |  |  | 1,063 |  |  | 1,419 |
Affiliate investments | 2,610 |  |  | — |  |  | 2,689 |  |  | — |
Total dividend income | 2,610 |  |  | 1,419 |  |  | 3,752 |  |  | 1,419 |
Success fee income |  |  |  |  |  |  |
Non-Control/Non-Affiliate investments | — |  |  | — |  |  | 447 |  |  | 1,553 |
Affiliate investments | — |  |  | 150 |  |  | 307 |  |  | 150 |
Total success fee income | — |  |  | 150 |  |  | 754 |  |  | 1,703 |
Total investment income | $ | 25,279 |  |  | $ | 22,565 |  |  | $ | 48,823 |  |  | $ | 44,743 |
EXPENSES |  |  |  |  |  |  |
Base management fee(A) | $ | 5,457 |  |  | $ | 4,447 |  |  | $ | 10,537 |  |  | $ | 9,065 |
Loan servicing fee(A) | 2,932 |  |  | 2,194 |  |  | 5,604 |  |  | 4,416 |
Incentive fee(A) | 5,207 |  |  | 2,232 |  |  | 4,998 |  |  | (1,556) |
Administration fee(A) | 520 |  |  | 567 |  |  | 953 |  |  | 1,073 |
Interest expense on borrowings | 9,631 |  |  | 6,399 |  |  | 18,130 |  |  | 12,879 |
Amortization of deferred financing costs and discounts | 910 |  |  | 629 |  |  | 1,820 |  |  | 1,260 |
Professional fees | 518 |  |  | 481 |  |  | 1,020 |  |  | 811 |
Other general and administrative expenses | 395 |  |  | 1,188 |  |  | 1,035 |  |  | 2,802 |
Expenses before credits from Adviser | 25,570 |  |  | 18,137 |  |  | 44,097 |  |  | 30,750 |
Credits to base management fee – loan servicing fee(A) | (2,932) |  |  | (2,194) |  |  | (5,604) |  |  | (4,416) |
Credits to fees from Adviser - other(A) | (1,638) |  |  | (669) |  |  | (3,037) |  |  | (1,296) |
Total expenses, net of credits to fees | 21,000 |  |  | 15,274 |  |  | 35,456 |  |  | 25,038 |
NET INVESTMENT INCOME | $ | 4,279 |  |  | $ | 7,291 |  |  | $ | 13,367 |  |  | $ | 19,705 |
REALIZED AND UNREALIZED GAIN (LOSS) |  |  |  |  |  |  |
Net realized gain (loss): |  |  |  |  |  |  |
Non-Control/Non-Affiliate investments | $ | — |  |  | $ | 19 |  |  | $ | — |  |  | $ | 21 |
Affiliate investments | (29,938) |  |  | 42,284 |  |  | (29,938) |  |  | 42,284 |
Total net realized gain (loss) | (29,938) |  |  | 42,303 |  |  | (29,938) |  |  | 42,305 |
Net unrealized appreciation (depreciation): |  |  |  |  |  |  |
Non-Control/Non-Affiliate investments | 34,581 |  |  | 464 |  |  | 32,427 |  |  | (11,970) |
Affiliate investments | 19,469 |  |  | (33,684) |  |  | 20,551 |  |  | (38,749) |
Control investments | 402 |  |  | (892) |  |  | 427 |  |  | (2,335) |
Other | (84) |  |  | — |  |  | (353) |  |  | — |
Total net unrealized appreciation (depreciation) | 54,368 |  |  | (34,112) |  |  | 53,052 |  |  | (53,054) |
Net realized and unrealized gain (loss) | 24,430 |  |  | 8,191 |  |  | 23,114 |  |  | (10,749) |
NET INCREASE IN NET ASSETS RESULTING FROM OPERATIONS | $ | 28,709 |  |  | $ | 15,482 |  |  | $ | 36,481 |  |  | $ | 8,956 |
BASIC AND DILUTED PER COMMON SHARE: |  |  |  |  |  |  |
Net investment income | $ | 0.11 |  |  | $ | 0.20 |  |  | $ | 0.35 |  |  | $ | 0.54 |
Net increase in net assets resulting from operations | $ | 0.75 |  |  | $ | 0.42 |  |  | $ | 0.97 |  |  | $ | 0.24 |
WEIGHTED-AVERAGE SHARES OF COMMON STOCK OUTSTANDING: |  |  |  |  |  |  |
Basic and diluted | 38,445,643 |  |  | 36,688,667 |  |  | 37,681,491 |  |  | 36,688,667 |

(A)Refer to Note 4 — Related Party Transactions in the accompanying Notes to Consolidated Financial Statements for additional information.
THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONSOLIDATED FINANCIAL STATEMENTS.
3

Table of Contents
GLADSTONE INVESTMENT CORPORATION
CONSOLIDATED STATEMENTS OF CHANGES IN NET ASSETS
(IN THOUSANDS)
(UNAUDITED)

| 2025 |  | 2024
NET ASSETS, MARCH 31 | $ | 499,084 |  |  | $ | 492,711 |
OPERATIONS |  |  |
Net investment income | 9,088 |  |  | 12,414 |
Net realized gain on investments | — |  |  | 2 |
Net unrealized depreciation of investments | (1,047) |  |  | (18,942) |
Net unrealized appreciation of other | (269) |  |  | — |
Net increase (decrease) in net assets from operations | 7,772 |  |  | (6,526) |
DISTRIBUTIONS(A) |  |  |
Distributions to common stockholders from net investment income ($0.27 and $0.24 per share, respectively) | (10,125) |  |  | (8,805) |
Distributions to common stockholders from net realized gains ($0.51 and $0.00 per share, respectively) | (18,663) |  |  | — |
Net decrease in net assets from distributions | (28,788) |  |  | (8,805) |
CAPITAL ACTIVITY |  |  |
Issuance of common stock | 7,331 |  |  | — |
Discounts, commissions, and offering costs for issuance of common stock | (95) |  |  | — |
Net increase in net assets from capital activity | 7,236 |  |  | — |
NET DECREASE IN NET ASSETS | (13,780) |  |  | (15,331) |
NET ASSETS, JUNE 30 | $ | 485,304 |  |  | $ | 477,380 |
OPERATIONS |  |  |
Net investment income | $ | 4,279 |  |  | $ | 7,291 |
Net realized (loss) gain on investments | (29,938) |  |  | 42,303 |
Net unrealized appreciation (depreciation) of investments | 54,452 |  |  | (34,112) |
Net unrealized appreciation of other | (84) |  |  | — |
Net increase in net assets from operations | 28,709 |  |  | 15,482 |
DISTRIBUTIONS(A) |  |  |
Distributions to common stockholders from net investment income ($0.24 and $0.24 per share, respectively) | (9,289) |  |  | (8,805) |
Distributions to common stockholders from net realized gains ($0.00 and $0.70 per share, respectively)(B) | — |  |  | (25,682) |
Net decrease in net assets from distributions | (9,289) |  |  | (34,487) |
CAPITAL ACTIVITY |  |  |
Issuance of common stock | 31,562 |  |  | — |
Discounts, commissions, and offering costs for issuance of common stock | (443) |  |  | — |
Net increase in net assets from capital activity | 31,119 |  |  | — |
NET INCREASE (DECREASE) IN NET ASSETS | 50,539 |  |  | (19,005) |
NET ASSETS, SEPTEMBER 30 | $ | 535,843 |  |  | $ | 458,375 |

(A)Refer to Note 8 — Distributions to Common Stockholders in the accompanying Notes to Consolidated Financial Statements for additional information.
(B)Includes $0.70 per common share of distributions declared and unpaid as of September 30, 2024, as such distribution was a supplemental distribution declared on September 17, 2024 with a record date of October 4, 2024 and a pay date of October 15, 2024.
THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONSOLIDATED FINANCIAL STATEMENTS.
4

Table of Contents
GLADSTONE INVESTMENT CORPORATION
CONSOLIDATED STATEMENTS OF CASH FLOWS
(IN THOUSANDS)
(UNAUDITED)

| Six Months Ended September 30,
| 2025 |  | 2024
CASH FLOWS FROM OPERATING ACTIVITIES |  |  |
Net increase in net assets resulting from operations | $ | 36,481 |  |  | $ | 8,956 |
Adjustments to reconcile net increase (decrease) in net assets resulting from operations to net cash (used in) provided by operating activities: |  |  |
Purchase of investments | (133,878) |  |  | (20,098) |
Principal repayments of investments | 5,806 |  |  | 28,000 |
Net proceeds from the sale and recapitalization of investments | — |  |  | 48,546 |
Net realized loss (gain) on investments | 29,938 |  |  | (42,305) |
Net unrealized (appreciation) depreciation of investments | (53,405) |  |  | 53,054 |
Net unrealized appreciation of other | 353 |  |  | — |
Amortization of deferred financing costs and discounts | 1,820 |  |  | 1,260 |
Bad debt expense, net of recoveries | (247) |  |  | 1,045 |
Changes in assets and liabilities: |  |  |
Increase in interest receivable | (605) |  |  | (109) |
Decrease in due from administrative agent | 509 |  |  | 871 |
Decrease (increase) in other assets, net | 477 |  |  | (290) |
(Decrease) increase in accounts payable and accrued expenses | (408) |  |  | 1,040 |
Increase (decrease) in interest payable | 388 |  |  | (224) |
Increase (decrease) in fees due to Adviser(A) | 2,203 |  |  | (3,991) |
Decrease in fee due to Administrator(A) | (240) |  |  | (161) |
Decrease in other liabilities | (31) |  |  | (110) |
Net cash (used in) provided by operating activities | (110,839) |  |  | 75,484 |
CASH FLOWS FROM FINANCING ACTIVITIES |  |  |
Proceeds from issuance of common stock | 38,893 |  |  | — |
Discounts, commissions, and offering costs for issuance of common stock | (458) |  |  | — |
Proceeds from line of credit | 153,300 |  |  | 47,800 |
Repayments on line of credit | (55,600) |  |  | (105,900) |
Deferred financing and offering costs | (136) |  |  | (320) |
Distributions paid to common stockholders | (38,077) |  |  | (17,610) |
Net cash provided by (used in) financing activities | 97,922 |  |  | (76,030) |
NET DECREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH | (12,917) |  |  | (546) |
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, BEGINNING OF PERIOD | 15,154 |  |  | 3,220 |
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, END OF PERIOD | $ | 2,237 |  |  | $ | 2,674 |
CASH PAID FOR INTEREST | $ | 16,822 |  |  | $ | 12,442 |
NON-CASH FINANCING ACTIVITY: |  |  |
Distributions payable | $ | — |  |  | $ | 25,682 |

(A)Refer to Note 4 — Related Party Transactions in the accompanying Notes to Consolidated Financial Statements for additional information.
Supplemental disclosures of non-cash operating activities:
•In September 2025, we restructured our existing first lien term loans and line of credit to J.R. Hobbs Co. – Atlanta, LLC with an aggregate total cost basis of $49.9 million into a new $20.0 million first lien term loan, which resulted in a realized loss of $29.9 million.
THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONSOLIDATED FINANCIAL STATEMENTS.
5

Table of Contents
GLADSTONE INVESTMENT CORPORATION
CONSOLIDATED SCHEDULE OF INVESTMENTS
SEPTEMBER 30, 2025
(DOLLAR AMOUNTS IN THOUSANDS)
(UNAUDITED)

Company and Investment(A)(B)(D)(E) |  | Principal/Shares/ Units(F)(H) |  | Cost |  | Fair Value
NON-CONTROL/NON-AFFILIATE INVESTMENTS(L) – 151.7% |  |  |  |  |  |
Secured First Lien Debt – 73.5% |  |  |  |  |  |
Aerospace and Defense – 20.5% |  |  |  |  |  |
Detroit Defense, Inc.(K) – Term Debt (SOFR+9.0%, 13.1% Cash, Due 12/2029)(J)(Q) |  | $ | 61,305 |  |  | $ | 61,305 |  |  | $ | 61,305 |
Global GRAB Technologies, Inc.– Line of Credit, $5,000 available (SOFR+5.0%, 10.0% Cash, Due 7/2026)(J) |  | 2,000 |  |  | 2,000 |  |  | 2,000 |
Global GRAB Technologies, Inc. –Term Debt (SOFR+9.0%, 13.5% Cash, Due 7/2030)(J) |  | 46,500 |  |  | 46,500 |  |  | 46,500 |
|  |  |  | 109,805 |  |  | 109,805 |
Buildings and Real Estate – 7.1% |  |  |  |  |  |
Dema/Mai Holdings, Inc. – Term Debt (SOFR+11.0%, 15.1% Cash, Due 7/2027)(J) |  | 38,250 |  |  | 38,250 |  |  | 38,250 |
Chemicals, Plastics, and Rubber - 6.7% |  |  |  |  |  |
Smart Chemical Solutions, LLC(K) – Term Debt (SOFR+9.0%, 13.5% Cash, Due 5/2030)(J) |  | 35,660 |  |  | 35,660 |  |  | 35,660 |
Diversified/Conglomerate Manufacturing – 0.7% |  |  |  |  |  |
Phoenix Door Systems, Inc. – Line of Credit, $0 available (SOFR+1.4%, 5.5% Cash (0.3% Unused Fee), Due 9/2026)(J) |  | 2,950 |  |  | 2,950 |  |  | 2,950 |
Phoenix Door Systems, Inc. – Term Debt (SOFR+3.4%, 7.5% Cash, Due 9/2026)(J) |  | 3,200 |  |  | 3,200 |  |  | 574 |
|  |  |  | 6,150 |  |  | 3,524 |
Diversified/Conglomerate Services – 12.4% |  |  |  |  |  |
Horizon Facilities Services, Inc. – Term Debt (SOFR+0.5%, 6.0% Cash, Due 6/2028)(J) |  | 57,700 |  |  | 57,700 |  |  | 31,711 |
Mason West, LLC – Term Debt (SOFR+10.0%, 14.1% Cash, Due 7/2027)(J) |  | 25,250 |  |  | 25,250 |  |  | 25,250 |
Sun State Nursery and Landscaping, LLC – Line of Credit, $1,760 available (SOFR+5.0%, 10.0% Cash, Due 5/2027)(J) |  | 240 |  |  | 240 |  |  | 240 |
Sun State Nursery and Landscaping, LLC – Term Debt (SOFR+9.0%, 13.5% Cash, Due 5/2030)(J) |  | 9,520 |  |  | 9,520 |  |  | 9,520 |
|  |  |  | 92,710 |  |  | 66,721 |
Healthcare, Education, and Childcare – 5.6% |  |  |  |  |  |
Educators Resource, Inc. – Term Debt (SOFR+10.5%, 14.6% Cash, Due 2/2030)(J) |  | 30,000 |  |  | 30,000 |  |  | 30,000 |
Home and Office Furnishings, Housewares, and Durable Consumer Products – 6.9% |  |  |  |  |  |
Brunswick Bowling Products, Inc. – Term Debt (SOFR+10.0%, 14.1% Cash, Due 3/2029)(J) |  | 17,700 |  |  | 17,700 |  |  | 17,700 |
Brunswick Bowling Products, Inc. – Term Debt (SOFR+10.0%, 14.1% Cash, Due 3/2029)(J) |  | 6,850 |  |  | 6,850 |  |  | 6,850 |
Ginsey Home Solutions, Inc. – Term Debt (SOFR+10.0%, 14.1% Cash, Due 11/2028)(J) |  | 12,200 |  |  | 12,200 |  |  | 12,200 |
|  |  |  | 36,750 |  |  | 36,750 |
Leisure, Amusement, Motion Pictures, and Entertainment – 5.2% |  |  |  |  |  |
Schylling, Inc. – Term Debt (SOFR+11.0%, 15.1% Cash, Due 9/2027)(J) |  | 27,981 |  |  | 27,981 |  |  | 27,981 |
Oil and Gas – 6.3% |  |  |  |  |  |
The E3 Company, LLC – Term Debt (SOFR+9.0%, 13.5% Cash, Due 9/2028)(J) |  | 33,750 |  |  | 33,750 |  |  | 33,750 |
Printing and Publishing – 2.1% |  |  |  |  |  |
Home Concepts Acquisition, Inc. – Line of Credit, $0 available (SOFR+6.0%, 10.1% Cash, Due 11/2025)(J) |  | 2,000 |  |  | 2,000 |  |  | 2,000 |
Home Concepts Acquisition, Inc. – Line of Credit, $400 available (SOFR+6.0%, 10.1% Cash, Due 11/2025)(J) |  | — |  |  | — |  |  | — |
Home Concepts Acquisition, Inc. – Term Debt (SOFR+9.0%, 13.1% Cash, Due 5/2028)(J) |  | 12,000 |  |  | 12,000 |  |  | 9,325 |
|  |  |  | 14,000 |  |  | 11,325 |
Total Secured First Lien Debt |  |  |  | $ | 425,056 |  |  | $ | 393,766 |

THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONSOLIDATED FINANCIAL STATEMENTS.
6

Table of Contents
GLADSTONE INVESTMENT CORPORATION
CONSOLIDATED SCHEDULE OF INVESTMENTS (Continued)
SEPTEMBER 30, 2025
(DOLLAR AMOUNTS IN THOUSANDS)
(UNAUDITED)

Company and Investment(A)(B)(D)(E) |  | Principal/Shares/ Units(F)(H) |  | Cost |  | Fair Value
Secured Second Lien Debt – 16.9% |  |  |  |  |  |
Aerospace and Defense – 4.8% |  |  |  |  |  |
Galaxy Technologies Holdings, Inc. – Term Debt (SOFR+4.1%, 8.2% Cash, Due 10/2026)(J) |  | $ | 6,900 |  |  | $ | 6,900 |  |  | $ | 6,900 |
Galaxy Technologies Holdings, Inc. – Term Debt (SOFR+7.0%, 11.1% Cash, Due 10/2026)(J) |  | 18,796 |  |  | 18,796 |  |  | 18,796 |
|  |  |  | 25,696 |  |  | 25,696 |
Cargo Transport – 1.9% |  |  |  |  |  |
Diligent Delivery Systems – Term Debt (SOFR+9.0%, 13.1% Cash, Due 10/2025)(G)(J) |  | 13,000 |  |  | 13,000 |  |  | 10,293 |
Machinery (Non-Agriculture, Non-Construction, and Non-Electronic) – 10.2% |  |  |  |  |  |
SFEG Holdings, Inc. – Term Debt (SOFR+7.0%, 12.5% Cash, Due 10/2028)(J) |  | 54,644 |  |  | 54,644 |  |  | 54,644 |
Total Secured Second Lien Debt |  |  |  | $ | 93,340 |  |  | $ | 90,633 |
Preferred Equity – 47.1% |  |  |  |  |  |
Aerospace and Defense – 6.8% |  |  |  |  |  |
Detroit Defense, Inc.(K) – Preferred Stock(C)(J)(Q) |  | 17,388 |  |  | $ | 17,388 |  |  | $ | 15,592 |
Global GRAB Technologies, Inc. – Preferred Stock(C)(J) |  | 21,100 |  |  | 21,100 |  |  | 21,100 |
|  |  |  | 38,488 |  |  | 36,692 |
Buildings and Real Estate – 6.6% |  |  |  |  |  |
Dema/Mai Holdings, Inc. – Preferred Stock(C)(J) |  | 21,000 |  |  | 21,000 |  |  | 35,242 |
Chemicals, Plastics, and Rubber – 2.3% |  |  |  |  |  |
Smart Chemical Solutions, LLC(K) – Preferred Stock(C)(J) |  | 13,843 |  |  | 13,843 |  |  | 12,148 |
Diversified/Conglomerate Services – 3.4% |  |  |  |  |  |
Horizon Facilities Services, Inc. – Preferred Stock(C)(J) |  | 10,080 |  |  | — |  |  | — |
Mason West, LLC – Preferred Stock(C)(J) |  | 11,206 |  |  | 11,206 |  |  | 15,097 |
Sun State Nursery and Landscaping, LLC – Preferred Stock(C)(J) |  | 3,059 |  |  | 3,059 |  |  | 3,059 |
|  |  |  | 14,265 |  |  | 18,156 |
Healthcare, Education, and Childcare – 2.9% |  |  |  |  |  |
Educators Resource, Inc. – Preferred Stock(C)(J) |  | 8,560 |  |  | 8,560 |  |  | 15,767 |
Home and Office Furnishings, Housewares, and Durable Consumer Products – 10.4% |  |  |  |  |  |
Brunswick Bowling Products, Inc. – Preferred Stock(C)(J) |  | 6,653 |  |  | 6,653 |  |  | 48,863 |
Ginsey Home Solutions, Inc. – Preferred Stock(C)(J) |  | 19,280 |  |  | 9,583 |  |  | 6,810 |
|  |  |  | 16,236 |  |  | 55,673 |
Leisure, Amusement, Motion Pictures, and Entertainment – 5.5% |  |  |  |  |  |
Schylling, Inc. – Preferred Stock(C)(J) |  | 4,000 |  |  | 4,000 |  |  | 29,263 |
Oil and Gas – 9.2% |  |  |  |  |  |
The E3 Company, LLC – Preferred Stock(C)(J) |  | 11,233 |  |  | 11,233 |  |  | 49,304 |
Printing and Publishing – 0.0% |  |  |  |  |  |
Home Concepts Acquisition, Inc. – Preferred Stock(C)(J) |  | 3,275 |  |  | 3,275 |  |  | — |
Total Preferred Equity |  |  |  | $ | 130,900 |  |  | $ | 252,245 |
Common Equity/Equivalents – 14.2% |  |  |  |  |  |
Aerospace and Defense – 0.0% |  |  |  |  |  |
Galaxy Technologies Holdings, Inc. – Common Stock(C)(J) |  | 16,957 |  |  | $ | 11,513 |  |  | $ | — |
Cargo Transport – 0.0% |  |  |  |  |  |
Diligent Delivery Systems – Common Stock Warrants(C)(J) |  | 8 | % |  | 500 |  |  | — |

THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONSOLIDATED FINANCIAL STATEMENTS.
7

Table of Contents
GLADSTONE INVESTMENT CORPORATION
CONSOLIDATED SCHEDULE OF INVESTMENTS (Continued)
SEPTEMBER 30, 2025
(DOLLAR AMOUNTS IN THOUSANDS)
(UNAUDITED)

Company and Investment(A)(B)(D)(E) |  | Principal/Shares/ Units(F)(H) |  | Cost |  | Fair Value
Diversified/Conglomerate Manufacturing – 0.0% |  |  |  |  |  |
Phoenix Door Systems, Inc. – Common Stock(C)(J) |  | 4,221 |  |  | $ | 1,830 |  |  | $ | — |
Home and Office Furnishings, Housewares, and Durable Consumer Products – 0.0% |  |  |  |  |  |
Ginsey Home Solutions, Inc. – Common Stock(C)(J) |  | 63,747 |  |  | 8 |  |  | — |
Machinery (Non-Agriculture, Non-Construction, and Non-Electronic) – 14.2% |  |  |  |  |  |
SFEG Holdings, Inc. – Common Stock(C)(J) |  | 18,721 |  |  | 30,746 |  |  | 75,894 |
Total Common Equity/Equivalents |  |  |  | $ | 44,597 |  |  | $ | 75,894 |
Total Non-Control/Non-Affiliate Investments |  |  |  | $ | 693,893 |  |  | $ | 812,538 |
AFFILIATE INVESTMENTS(M) – 59.2% |  |  |  |  |  |
Secured First Lien Debt – 37.3% |  |  |  |  |  |
Diversified/Conglomerate Services – 13.2% |  |  |  |  |  |
ImageWorks Display and Marketing Group, Inc. – Term Debt (SOFR+11.0%, 15.1% Cash, Due 11/2028)(J) |  | $ | 22,000 |  |  | $ | 22,000 |  |  | $ | 22,000 |
J.R. Hobbs Co. - Atlanta, LLC – Term Debt (SOFR+6.0%, 10.1% Cash, Due 9/2030)(J) |  | 20,000 |  |  | 20,000 |  |  | 20,000 |
The Maids International, LLC – Term Debt (SOFR+10.5%, 14.6% Cash, Due 3/2028)(J) |  | 28,560 |  |  | 28,560 |  |  | 28,560 |
|  |  |  | 70,560 |  |  | 70,560 |
Electronics – 9.0% |  |  |  |  |  |
Nielsen-Kellerman Acquisition Corp.(K) – Term Debt (SOFR+8.5%, 13.5% Cash, Due 12/2029)(J) |  | 48,082 |  |  | 48,082 |  |  | 48,082 |
Home and Office Furnishings, Housewares, and Durable Consumer Products – 7.1% |  |  |  |  |  |
Old World Christmas, Inc. – Term Debt (SOFR+9.5%, 13.6% Cash, Due 12/2028)(J) |  | 38,000 |  |  | 38,000 |  |  | 38,000 |
Leisure, Amusement, Motion Pictures, and Entertainment – 3.8% |  |  |  |  |  |
Pyrotek Special Effects, Inc.(P) – Term Debt (SOFR+8.0%, 13.0% Cash, Due 11/2029)(J) |  | 20,120 |  |  | 20,120 |  |  | 20,120 |
Mining, Steel, Iron and Non-Precious Metals – 2.8% |  |  |  |  |  |
UPB Acquisition, Inc. – Term Debt (SOFR+10.0%, 14.1% Cash, Due 7/2028)(J) |  | 15,000 |  |  | 15,000 |  |  | 15,000 |
Telecommunications – 1.4% |  |  |  |  |  |
B+T Group Acquisition, Inc.(K) – Line of Credit, $0 available (SOFR+2.0%, 7.0% Cash, Due 12/2026)(G)(J) |  | 3,080 |  |  | 3,080 |  |  | 3,080 |
B+T Group Acquisition, Inc.(K) – Line of Credit, $0 available (SOFR+2.0%, 7.0% Cash, Due 12/2026)(G)(J) |  | 1,050 |  |  | 1,050 |  |  | 1,050 |
B+T Group Acquisition, Inc.(K) – Term Debt (SOFR+2.0%, 7.0% Cash, Due 12/2026)(G)(J) |  | 14,000 |  |  | 14,000 |  |  | 3,551 |
|  |  |  | 18,130 |  |  | 7,681 |
Total Secured First Lien Debt |  |  |  | $ | 209,892 |  |  | $ | 199,443 |
Preferred Equity – 21.0% |  |  |  |  |  |
Chemicals, Plastics, and Rubber – 0.6% |  |  |  |  |  |
PSI Molded Plastics, Inc. – Preferred Stock(C)(J) |  | 428,773 |  |  | $ | 46,746 |  |  | $ | 3,374 |
Diversified/Conglomerate Services – 6.2% |  |  |  |  |  |
ImageWorks Display and Marketing Group, Inc. – Preferred Stock(C)(J) |  | 67,490 |  |  | 6,749 |  |  | 17,825 |
J.R. Hobbs Co. – Atlanta, LLC – Preferred Stock(C)(J) |  | 10,920 |  |  | 10,920 |  |  | 12,362 |
The Maids International, LLC – Preferred Stock(C)(J) |  | 6,640 |  |  | 6,640 |  |  | 3,394 |
|  |  |  | 24,309 |  |  | 33,581 |
Electronics – 4.4% |  |  |  |  |  |
Nielsen-Kellerman Acquisition Corp.(K) – Preferred Stock(C)(J) |  | 22,169 |  |  | 22,169 |  |  | 23,793 |

THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONSOLIDATED FINANCIAL STATEMENTS.
8

Table of Contents
GLADSTONE INVESTMENT CORPORATION
CONSOLIDATED SCHEDULE OF INVESTMENTS (Continued)
SEPTEMBER 30, 2025
(DOLLAR AMOUNTS IN THOUSANDS)
(UNAUDITED)

Company and Investment(A)(B)(D)(E) |  | Principal/Shares/ Units(F)(H) |  | Cost |  | Fair Value
Home and Office Furnishings, Housewares, and Durable Consumer Products – 4.2% |  |  |  |  |  |
Old World Christmas, Inc. – Preferred Stock(C)(J) |  | 6,180 |  |  | $ | — |  |  | $ | 22,243 |
Leisure, Amusement, Motion Pictures, and Entertainment – 1.3% |  |  |  |  |  |
Pyrotek Special Effects, Inc.(P) – Preferred Stock(C)(J) |  | 7,060 |  |  | 7,060 |  |  | 6,738 |
Mining, Steel, Iron and Non-Precious Metals – 4.3% |  |  |  |  |  |
UPB Acquisition, Inc. – Preferred Stock(C)(J) |  | 6,000 |  |  | 6,000 |  |  | 23,304 |
Telecommunications – 0.0% |  |  |  |  |  |
B+T Group Acquisition, Inc.(K) – Preferred Stock(C)(J) |  | 14,304 |  |  | 4,722 |  |  | — |
Total Preferred Equity |  |  |  | $ | 111,006 |  |  | $ | 113,033 |
Common Equity/Equivalents – 0.9% |  |  |  |  |  |
Finance – 0.9% |  |  |  |  |  |
Gladstone Alternative Income Fund – Common Equity(C)(O) |  | 500,000 |  |  | $ | 5,000 |  |  | $ | 5,075 |
Telecommunications – 0.0% |  |  |  |  |  |
B+T Group Acquisition, Inc.(K) – Common Stock Warrants(C)(J) |  | 3.5 | % |  | — |  |  | — |
Total Common Equity/Equivalents |  |  |  | $ | 5,000 |  |  | $ | 5,075 |
Total Affiliate Investments |  |  |  | $ | 325,898 |  |  | $ | 317,551 |
CONTROL INVESTMENTS(N) – 0.1% |  |  |  |  |  |
Secured First Lien Debt – 0.1% |  |  |  |  |  |
Diversified/Conglomerate Manufacturing – 0.1% |  |  |  |  |  |
Edge Adhesives Holdings, Inc.(K) – Term Debt (SOFR+5.5%, 9.6% Cash, Due 8/2026)(G)(J) |  | 9,210 |  |  | $ | 9,210 |  |  | $ | 770 |
Total Secured First Lien Debt |  |  |  | $ | 9,210 |  |  | $ | 770 |
Preferred Equity – 0.0% |  |  |  |  |  |
Diversified/Conglomerate Manufacturing – 0.0% |  |  |  |  |  |
Edge Adhesives Holdings, Inc.(K) – Preferred Stock(C)(J) |  | 8,199 |  |  | $ | 8,199 |  |  | $ | — |
Total Preferred Equity |  |  |  | $ | 8,199 |  |  | $ | — |
Total Control Investments |  |  |  | $ | 17,409 |  |  | $ | 770 |
TOTAL INVESTMENTS – 211.0% |  |  |  | $ | 1,037,200 |  |  | $ | 1,130,859 |
CASH EQUIVALENTS - 0.2% |  |  |  |  |  |
Dreyfus Treasury Obligations Cash Management Fund (3.77% market yield)(R) |  | 1,217 |  |  | $ | 1,217 |  |  | $ | 1,217 |
Total Cash Equivalents |  |  |  | $ | 1,217 |  |  | $ | 1,217 |
TOTAL INVESTMENTS AND CASH EQUIVALENTS - 211.2% |  |  |  | $ | 1,038,417 |  |  | $ | 1,132,076 |

(A)Certain of the securities listed are issued by affiliate(s) of the indicated portfolio company. The majority of the securities listed, totaling $1.0 billion at fair value, are pledged as collateral to our revolving line of credit, as described further in Note 5—Borrowings in the accompanying Notes to Consolidated Financial Statements. Additionally, under Section 55 of the Investment Company Act of 1940, as amended (the "1940 Act"), we may not acquire any non-qualifying assets unless, at the time such acquisition is made, qualifying assets represent at least 70% of our total assets. As of September 30, 2025, our investments in Pyrotek Special Effects, Inc. ("Pyrotek") and Gladstone Alternative Income Fund ("Gladstone Alternative") are considered non-qualifying assets under Section 55 of the 1940 Act. Such non-qualifying assets represent 2.8% of total investments, at fair value, as of September 30, 2025.
(B)Unless indicated otherwise, all cash interest rates are indexed to 30-day Secured Overnight Financing Rate ("SOFR"), which was 4.1% as of September 30, 2025. If applicable, paid-in-kind interest rates are noted separately from the cash interest rate. Certain securities are subject to an interest rate floor. The cash interest rate is the greater of the floor or the reference rate plus a spread. Due dates represent the contractual maturity date.
THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONSOLIDATED FINANCIAL STATEMENTS.
9

Table of Contents
GLADSTONE INVESTMENT CORPORATION
CONSOLIDATED SCHEDULE OF INVESTMENTS (Continued)
SEPTEMBER 30, 2025
(DOLLAR AMOUNTS IN THOUSANDS)
(UNAUDITED)
(C)Security is non-income producing.
(D)Category percentages represent the fair value of each category and subcategory as a percentage of net assets as of September 30, 2025.
(E)Unless indicated otherwise, all of our investments are valued using Level 3 inputs within the Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") Topic 820, "Fair Value Measurements and Disclosures" ("ASC 820") fair value hierarchy. Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.
(F)Where applicable, aggregates all shares of a class of stock owned without regard to specific series owned within such class (some series of which may or may not be voting shares) or aggregates all warrants to purchase shares of a class of stock owned without regard to specific series of such class of stock such warrants allow us to purchase.
(G)Debt security is on non-accrual status.
(H)Represents the principal balance, presented in thousands, for debt investments, the cash balance, presented in thousands, for cash equivalents, and the number of shares/units held for equity investments. Warrants are represented as a percentage of ownership, as applicable.
(I)Reserved.
(J)Fair value was based on the total enterprise value of the portfolio company, which is generally allocated to the portfolio company’s securities in order of their relative priority in the capital structure. Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.
(K)One or more of our affiliated funds, Gladstone Capital Corporation and Gladstone Alternative, co-invested with us in this portfolio company pursuant to an exemptive order granted by the U.S. Securities and Exchange Commission.
(L)Non-Control/Non-Affiliate investments, as defined by the 1940 Act, are those that are neither Control nor Affiliate investments and in which we own less than 5.0% of the issued and outstanding voting securities.
(M)Affiliate investments, as defined by the 1940 Act, are those that are not Control investments and in which we own, with the power to vote, between and inclusive of 5.0% and 25.0% of the issued and outstanding voting securities.
(N)Control investments, as defined by the 1940 Act, are those where we have the power to exercise a controlling influence over the management or policies of the portfolio company, which may include owning, with the power to vote, more than 25.0% of the issued and outstanding voting securities.
(O)Fair value was based on net asset value provided by the underlying fund as a practical expedient.
(P)This portfolio company is headquartered in Ontario, Canada.
(Q)The portfolio company changed its name from Ricardo Defense, Inc. to Detroit Defense, Inc during the six months ended September 30, 2025.
(R)Valued using Level 1 inputs within the FASB ASC 820 fair value hierarchy. Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.
THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONSOLIDATED FINANCIAL STATEMENTS.
10

Table of Contents
GLADSTONE INVESTMENT CORPORATION
CONSOLIDATED SCHEDULE OF INVESTMENTS
MARCH 31, 2025
(DOLLAR AMOUNTS IN THOUSANDS)

Company and Investment(A)(B)(D)(E) |  | Principal/Shares/ Units(F)(H) |  | Cost |  | Fair Value
NON-CONTROL/NON-AFFILIATE INVESTMENTS(L) – 130.0% |  |  |  |  |  |
Secured First Lien Debt – 60.3% |  |  |  |  |  |
Aerospace and Defense – 12.3% |  |  |  |  |  |
Ricardo Defense, Inc.(K) – Term Debt (SOFR+9.0%, 13.3% Cash, Due 12/2029)(J) |  | $ | 61,305 |  |  | $ | 61,305 |  |  | $ | 61,305 |
Buildings and Real Estate – 7.7% |  |  |  |  |  |
Dema/Mai Holdings, Inc. – Term Debt (SOFR+11.0%, 15.3% Cash, Due 7/2027)(J) |  | 38,250 |  |  | 38,250 |  |  | 38,250 |
Diversified/Conglomerate Manufacturing – 1.2% |  |  |  |  |  |
Phoenix Door Systems, Inc. – Line of Credit, $0 available (SOFR+1.4%, 5.7% Cash (0.3% Unused Fee), Due 9/2026)(J) |  | 2,950 |  |  | 2,950 |  |  | 2,950 |
Phoenix Door Systems, Inc. – Term Debt (SOFR+3.4%, 7.7% Cash, Due 9/2026)(J) |  | 3,200 |  |  | 3,200 |  |  | 3,200 |
|  |  |  | 6,150 |  |  | 6,150 |
Diversified/Conglomerate Services – 11.0% |  |  |  |  |  |
Horizon Facilities Services, Inc. – Term Debt (SOFR+0.5%, 6.0% Cash, Due 6/2026)(J) |  | 57,700 |  |  | 57,700 |  |  | 29,634 |
Mason West, LLC – Term Debt (SOFR+10.0%, 14.3% Cash, Due 7/2025)(J) |  | 25,250 |  |  | 25,250 |  |  | 25,250 |
|  |  |  | 82,950 |  |  | 54,884 |
Healthcare, Education, and Childcare – 6.0% |  |  |  |  |  |
Educators Resource, Inc. – Term Debt (SOFR+10.5%, 14.8% Cash, Due 2/2030)(J) |  | 30,000 |  |  | 30,000 |  |  | 30,000 |
Home and Office Furnishings, Housewares, and Durable Consumer Products – 7.4% |  |  |  |  |  |
Brunswick Bowling Products, Inc. – Term Debt (SOFR+10.0%, 14.3% Cash, Due 3/2029)(J) |  | 17,700 |  |  | 17,700 |  |  | 17,700 |
Brunswick Bowling Products, Inc. – Term Debt (SOFR+10.0%, 14.3% Cash, Due 3/2029)(J) |  | 6,850 |  |  | 6,850 |  |  | 6,850 |
Ginsey Home Solutions, Inc. – Term Debt (SOFR+10.0%, 14.3% Cash, Due 11/2025)(J) |  | 12,200 |  |  | 12,200 |  |  | 12,200 |
|  |  |  | 36,750 |  |  | 36,750 |
Leisure, Amusement, Motion Pictures, and Entertainment – 5.6% |  |  |  |  |  |
Schylling, Inc. – Term Debt (SOFR+11.0%, 15.3% Cash, Due 9/2027)(J) |  | 27,981 |  |  | 27,981 |  |  | 27,981 |
Oil and Gas – 6.8% |  |  |  |  |  |
The E3 Company, LLC – Term Debt (SOFR+9.0%, 13.5% Cash, Due 9/2028)(J) |  | 33,750 |  |  | 33,750 |  |  | 33,750 |
Printing and Publishing – 2.3% |  |  |  |  |  |
Home Concepts Acquisition, Inc. – Line of Credit, $0 available (SOFR+6.0%, 10.3% Cash, Due 11/2025)(J) |  | 2,000 |  |  | 2,000 |  |  | 2,000 |
Home Concepts Acquisition, Inc. – Line of Credit, $0 available (SOFR+6.0%, 10.3% Cash, Due 11/2025)(J) |  | 400 |  |  | 400 |  |  | 400 |
Home Concepts Acquisition, Inc. – Term Debt (SOFR+9.0%, 13.3% Cash, Due 5/2028)(J) |  | 12,000 |  |  | 12,000 |  |  | 9,281 |
|  |  |  | 14,400 |  |  | 11,681 |
Total Secured First Lien Debt |  |  |  | $ | 331,536 |  |  | $ | 300,751 |
Secured Second Lien Debt – 18.6% |  |  |  |  |  |
Aerospace and Defense – 5.2% |  |  |  |  |  |
Galaxy Technologies Holdings, Inc. – Term Debt (SOFR+4.1%, 8.4% Cash, Due 10/2026)(J) |  | $ | 6,900 |  |  | $ | 6,900 |  |  | $ | 6,900 |
Galaxy Technologies Holdings, Inc. – Term Debt (SOFR+7.0%, 11.3% Cash, Due 10/2026)(J) |  | 18,796 |  |  | 18,796 |  |  | 18,796 |
|  |  |  | 25,696 |  |  | 25,696 |
Cargo Transport – 2.5% |  |  |  |  |  |
Diligent Delivery Systems – Term Debt (SOFR+9.0%, 13.3% Cash, Due 9/2025)(G)(I) |  | 13,000 |  |  | 13,000 |  |  | 12,624 |
Machinery (Non-Agriculture, Non-Construction, and Non-Electronic) – 10.9% |  |  |  |  |  |
SFEG Holdings, Inc. – Term Debt (SOFR+7.0%, 12.5% Cash, Due 10/2028)(J) |  | 54,644 |  |  | 54,644 |  |  | 54,644 |
Total Secured Second Lien Debt |  |  |  | $ | 93,340 |  |  | $ | 92,964 |

THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONSOLIDATED FINANCIAL STATEMENTS.
11

Table of Contents
GLADSTONE INVESTMENT CORPORATION
CONSOLIDATED SCHEDULE OF INVESTMENTS
MARCH 31, 2025
(DOLLAR AMOUNTS IN THOUSANDS)

Company and Investment(A)(B)(D)(E) |  | Principal/Shares/ Units(F)(H) |  | Cost |  | Fair Value
Preferred Equity – 40.2% |  |  |  |  |  |
Aerospace and Defense – 3.5% |  |  |  |  |  |
Ricardo Defense, Inc.(K) – Preferred Stock(C)(J) |  | 17,388 |  |  | $ | 17,388 |  |  | $ | 17,388 |
Buildings and Real Estate – 6.2% |  |  |  |  |  |
Dema/Mai Holdings, Inc. – Preferred Stock(C)(J) |  | 21,000 |  |  | 21,000 |  |  | 31,070 |
Diversified/Conglomerate Services – 2.7% |  |  |  |  |  |
Horizon Facilities Services, Inc. – Preferred Stock(C)(J) |  | 10,080 |  |  | — |  |  | — |
Mason West, LLC – Preferred Stock(C)(J) |  | 11,206 |  |  | 11,206 |  |  | 13,262 |
|  |  |  | 11,206 |  |  | 13,262 |
Healthcare, Education, and Childcare – 4.3% |  |  |  |  |  |
Educators Resource, Inc. – Preferred Stock(C)(J) |  | 8,560 |  |  | 8,560 |  |  | 21,501 |
Home and Office Furnishings, Housewares, and Durable Consumer Products – 12.2% |  |  |  |  |  |
Brunswick Bowling Products, Inc. – Preferred Stock(C)(J) |  | 6,653 |  |  | 6,653 |  |  | 51,877 |
Ginsey Home Solutions, Inc. – Preferred Stock(C)(J) |  | 19,280 |  |  | 9,583 |  |  | 9,070 |
|  |  |  | 16,236 |  |  | 60,947 |
Leisure, Amusement, Motion Pictures, and Entertainment – 4.1% |  |  |  |  |  |
Schylling, Inc. – Preferred Stock(C)(J) |  | 4,000 |  |  | 4,000 |  |  | 20,599 |
Oil and Gas – 7.2% |  |  |  |  |  |
The E3 Company, LLC – Preferred Stock(C)(J) |  | 11,233 |  |  | 11,233 |  |  | 35,839 |
Printing and Publishing – 0.0% |  |  |  |  |  |
Home Concepts Acquisition, Inc. – Preferred Stock(C)(J) |  | 3,275 |  |  | 3,275 |  |  | — |
Total Preferred Equity |  |  |  | $ | 92,898 |  |  | $ | 200,606 |
Common Equity/Equivalents – 10.9% |  |  |  |  |  |
Aerospace and Defense – 0.7% |  |  |  |  |  |
Galaxy Technologies Holdings, Inc. – Common Stock(C)(J) |  | 16,957 |  |  | $ | 11,513 |  |  | $ | 3,480 |
Cargo Transport – 0.0% |  |  |  |  |  |
Diligent Delivery Systems – Common Stock Warrants(C)(J) |  | 8 | % |  | 500 |  |  | — |
Diversified/Conglomerate Manufacturing– 0.0% |  |  |  |  |  |
Phoenix Door Systems, Inc. – Common Stock(C)(J) |  | 4,221 |  |  | 1,830 |  |  | — |
Home and Office Furnishings, Housewares, and Durable Consumer Products – 0.0% |  |  |  |  |  |
Ginsey Home Solutions, Inc. – Common Stock(C)(J) |  | 63,747 |  |  | 8 |  |  | — |
Machinery (Non-Agriculture, Non-Construction, and Non-Electronic) – 10.2% |  |  |  |  |  |
SFEG Holdings, Inc. – Common Stock(C)(J) |  | 18,721 |  |  | 30,746 |  |  | 50,788 |
Total Common Equity/Equivalents |  |  |  | $ | 44,597 |  |  | $ | 54,268 |
Total Non-Control/Non-Affiliate Investments |  |  |  | $ | 562,371 |  |  | $ | 648,589 |

THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONSOLIDATED FINANCIAL STATEMENTS.
12

Table of Contents
GLADSTONE INVESTMENT CORPORATION
CONSOLIDATED SCHEDULE OF INVESTMENTS
MARCH 31, 2025
(DOLLAR AMOUNTS IN THOUSANDS)

Company and Investment(A)(B)(D)(E) |  | Principal/Shares/ Units(F)(H) |  | Cost |  | Fair Value
AFFILIATE INVESTMENTS(M) – 66.1% |  |  |  |  |  |
Secured First Lien Debt – 42.7% |  |  |  |  |  |
Diversified/Conglomerate Services – 16.2% |  |  |  |  |  |
ImageWorks Display and Marketing Group, Inc. – Term Debt (SOFR+11.0%, 15.3% Cash, Due 11/2028)(J) |  | $ | 22,000 |  |  | $ | 22,000 |  |  | $ | 22,000 |
J.R. Hobbs Co. - Atlanta, LLC – Line of Credit, $0 available (SOFR+6.0%, 10.3% Cash, Due 6/2025)(G)(J) |  | 5,000 |  |  | 5,000 |  |  | 3,036 |
J.R. Hobbs Co. - Atlanta, LLC – Term Debt (SOFR+6.0%, 10.3% Cash, Due 6/2025) (G)(J) |  | 16,500 |  |  | 16,500 |  |  | 10,019 |
J.R. Hobbs Co. - Atlanta, LLC – Term Debt (SOFR+10.3%, 14.6% Cash, Due 6/2025) (G)(J) |  | 26,000 |  |  | 26,000 |  |  | 15,788 |
J.R. Hobbs Co. - Atlanta, LLC – Term Debt (SOFR+6.0%, 10.3% Cash, Due 6/2025) (G)(J) |  | 2,438 |  |  | 2,438 |  |  | 1,480 |
The Maids International, LLC – Term Debt (SOFR+10.5%, 14.8% Cash, Due 3/2028)(J) |  | 28,560 |  |  | 28,560 |  |  | 28,560 |
|  |  |  | 100,498 |  |  | 80,883 |
Electronics – 9.9% |  |  |  |  |  |
Nielsen-Kellerman Acquisition Corp.(K) – Line of Credit, $2,820 available (SOFR+5.0%, 10.0% Cash, Due 12/2025)(J) |  | 1,070 |  |  | 1,070 |  |  | 1,070 |
Nielsen-Kellerman Acquisition Corp.(K) – Term Debt (SOFR+8.5%,13.5% Cash, Due 12/2029)(J) |  | 48,082 |  |  | 48,082 |  |  | 48,082 |
|  |  |  | 49,152 |  |  | 49,152 |
Home and Office Furnishings, Housewares, and Durable Consumer Products – 7.6% |  |  |  |  |  |
Old World Christmas, Inc. – Term Debt (SOFR+9.5%, 13.8% Cash, Due 12/2028)(J) |  | 38,000 |  |  | 38,000 |  |  | 38,000 |
Leisure, Amusement, Motion Pictures, and Entertainment – 4.5% |  |  |  |  |  |
Pyrotek Special Effects, Inc.(P) – Line of Credit, $500 available (SOFR+5.0%, 10.0% Cash, Due 11/2026)(J) |  | 2,500 |  |  | 2,500 |  |  | 2,500 |
Pyrotek Special Effects, Inc.(P) – Term Debt (SOFR+8.0%, 13.0% Cash, Due 11/2029)(J) |  | 20,120 |  |  | 20,120 |  |  | 20,120 |
|  |  |  | 22,620 |  |  | 22,620 |
Mining, Steel, Iron and Non-Precious Metals Total – 3.0% |  |  |  |  |  |
UPB Acquisition, Inc. – Term Debt (SOFR+10.0%, 14.3% Cash, Due 7/2026)(J) |  | 15,000 |  |  | 15,000 |  |  | 15,000 |
Telecommunications – 1.5% |  |  |  |  |  |
B+T Group Acquisition, Inc.(K) – Line of Credit, $0 available (SOFR+2.0%, 7.0% Cash, Due 12/2026)(G)(J) |  | 3,080 |  |  | 3,080 |  |  | 3,080 |
B+T Group Acquisition, Inc.(K) – Line of Credit, $120 available (SOFR+2.0%, 7.0% Cash, Due 6/2025)(G)(J) |  | 930 |  |  | 930 |  |  | 930 |
B+T Group Acquisition, Inc.(K) – Term Debt (SOFR+2.0%, 7.0% Cash, Due 12/2026)(G)(J) |  | 14,000 |  |  | 14,000 |  |  | 3,575 |
|  |  |  | 18,010 |  |  | 7,585 |
Total Secured First Lien Debt |  |  |  | $ | 243,280 |  |  | $ | 213,240 |
Secured Second Lien Debt – 2.1% |  |  |  |  |  |
Chemicals, Plastics, and Rubber –2.1% |  |  |  |  |  |
PSI Molded Plastics, Inc. – Term Debt (SOFR+1.0%, 7.0% Cash, Due 1/2028)(J) |  | $ | 10,616 |  |  | $ | 10,616 |  |  | $ | 10,616 |
Total Secured Second Lien Debt |  |  |  | $ | 10,616 |  |  | $ | 10,616 |
Preferred Equity – 20.3% |  |  |  |  |  |
Chemicals, Plastics, and Rubber – 0.2% |  |  |  |  |  |
PSI Molded Plastics, Inc. – Preferred Stock(C)(J) |  | 322,598 |  |  | $ | 36,130 |  |  | $ | 996 |
Diversified/Conglomerate Services – 4.3% |  |  |  |  |  |
ImageWorks Display and Marketing Group, Inc. – Preferred Stock(C)(J) |  | 67,490 |  |  | 6,749 |  |  | 12,921 |
J.R. Hobbs Co. – Atlanta, LLC – Preferred Stock(C)(J) |  | 10,920 |  |  | 10,920 |  |  | — |
The Maids International, LLC – Preferred Stock(C)(J) |  | 6,640 |  |  | 6,640 |  |  | 8,410 |
|  |  |  | 24,309 |  |  | 21,331 |
Electronics – 4.5% |  |  |  |  |  |
Nielsen-Kellerman Acquisition Corp.(K) – Preferred Stock(C)(J) |  | 22,169 |  |  | 22,169 |  |  | 22,421 |

THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONSOLIDATED FINANCIAL STATEMENTS.
13

Table of Contents
GLADSTONE INVESTMENT CORPORATION
CONSOLIDATED SCHEDULE OF INVESTMENTS
MARCH 31, 2025
(DOLLAR AMOUNTS IN THOUSANDS)

Company and Investment(A)(B)(D)(E) |  | Principal/Shares/ Units(F)(H) |  | Cost |  | Fair Value
Home and Office Furnishings, Housewares, and Durable Consumer Products – 4.7% |  |  |  |  |  |
Old World Christmas, Inc. – Preferred Stock(C)(J) |  | 6,180 |  |  | $ | — |  |  | $ | 23,539 |
Leisure, Amusement, Motion Pictures, and Entertainment – 1.4% |  |  |  |  |  |
Pyrotek Special Effects, Inc.(P) – Preferred Stock(C)(J) |  | 7,060 |  |  | 7,060 |  |  | 7,260 |
Mining, Steel, Iron and Non-Precious Metals – 5.2% |  |  |  |  |  |
UPB Acquisition, Inc. - Preferred Stock(C)(J) |  | 6,000 |  |  | 6,000 |  |  | 26,010 |
Telecommunications – 0.0% |  |  |  |  |  |
B+T Group Acquisition, Inc.(K) – Preferred Stock(C)(J) |  | 14,304 |  |  | 4,722 |  |  | — |
Total Preferred Equity |  |  |  | $ | 100,390 |  |  | $ | 101,557 |
Common Equity/Equivalents – 1.0% |  |  |  |  |  |
Finance – 1.0% |  |  |  |  |  |
Gladstone Alternative Income Fund – Common Equity(C)(O) |  | 500,000 |  |  | $ | 5,000 |  |  | $ | 4,975 |
Telecommunications – 0.0% |  |  |  |  |  |
B+T Group Acquisition, Inc.(K) – Common Stock Warrants(C)(J) |  | 3.5 | % |  | — |  |  | — |
Total Common Equity/Equivalents |  |  |  | $ | 5,000 |  |  | $ | 4,975 |
Total Affiliate Investments |  |  |  | $ | 359,286 |  |  | $ | 330,388 |
CONTROL INVESTMENTS(N) – 0.1% |  |  |  |  |  |
Secured First Lien Debt – 0.1% |  |  |  |  |  |
Diversified/Conglomerate Manufacturing – 0.1% |  |  |  |  |  |
Edge Adhesives Holdings, Inc.(K) – Term Debt (SOFR+5.5%, 9.8% Cash, Due 8/2026)(G)(J) |  | $ | 9,210 |  |  | $ | 9,210 |  |  | $ | 343 |
Total Secured First Lien Debt |  |  |  | $ | 9,210 |  |  | $ | 343 |
Preferred Equity – 0.0% |  |  |  |  |  |
Diversified/Conglomerate Manufacturing – 0.0% |  |  |  |  |  |
Edge Adhesives Holdings, Inc.(K) – Preferred Stock(C)(J) |  | 8,199 |  |  | $ | 8,199 |  |  | $ | — |
Total Preferred Equity |  |  |  | $ | 8,199 |  |  | $ | — |
Total Control Investments |  |  |  | $ | 17,409 |  |  | $ | 343 |
TOTAL INVESTMENTS – 196.2%(Q) |  |  |  | $ | 939,066 |  |  | $ | 979,320 |
CASH EQUIVALENTS - 0.3% |  |  |  |  |  |
Dreyfus Treasury Obligations Cash Management Fund (3.97% market yield)(R) |  | 1,354 |  |  | $ | 1,354 |  |  | $ | 1,354 |
Total Cash Equivalents |  |  |  | $ | 1,354 |  |  | $ | 1,354 |
TOTAL INVESTMENTS AND CASH EQUIVALENTS - 196.5% |  |  |  | $ | 940,420 |  |  | $ | 980,674 |

THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONSOLIDATED FINANCIAL STATEMENTS.
14

Table of Contents
GLADSTONE INVESTMENT CORPORATION
CONSOLIDATED SCHEDULE OF INVESTMENTS
MARCH 31, 2025
(DOLLAR AMOUNTS IN THOUSANDS)
(A)Certain of the securities listed are issued by affiliate(s) of the indicated portfolio company. The majority of the securities listed, totaling $764.7 million at fair value, are pledged as collateral to our revolving line of credit, as described further in Note 5—Borrowings in the accompanying Notes to Consolidated Financial Statements. Additionally, under Section 55 of the 1940 Act, we may not acquire any non-qualifying assets unless, at the time such acquisition is made, qualifying assets represent at least 70% of our total assets. As of March 31, 2025, our investments in Pyrotek and Gladstone Alternative are considered non-qualifying assets under Section 55 of the 1940 Act. Such non-qualifying assets represent 3.6% of total investments, at fair value, as of March 31, 2025.
(B)Unless indicated otherwise, all cash interest rates are indexed to 30-day SOFR, which was 4.3% as of March 31, 2025. If applicable, paid-in-kind interest rates are noted separately from the cash interest rate. Certain securities are subject to an interest rate floor. The cash interest rate is the greater of the floor or reference rate plus a spread. Due dates represent the contractual maturity date.
(C)Security is non-income producing.
(D)Category percentages represent the fair value of each category and subcategory as a percentage of net assets as of March 31, 2025.
(E)Unless indicated otherwise, all of our investments are valued using Level 3 inputs within the FASB ASC 820 fair value hierarchy. Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.
(F)Where applicable, aggregates all shares of a class of stock owned without regard to specific series owned within such class (some series of which may or may not be voting shares) or aggregates all warrants to purchase shares of a class of stock owned without regard to specific series of such class of stock such warrants allow us to purchase.
(G)Debt security is on non-accrual status.
(H)Represents the principal balance, presented in thousands, for debt investments, the cash balance, presented in thousands, for cash equivalents, and the number of shares/units held for equity investments. Warrants are represented as a percentage of ownership, as applicable.
(I)Fair value was based on internal yield analysis or on estimates of value submitted by a third-party valuation firm. Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.
(J)Fair value was based on the total enterprise value of the portfolio company, which is generally allocated to the portfolio company’s securities in order of their relative priority in the capital structure. Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.
(K)One or more of our affiliated funds, Gladstone Capital Corporation and Gladstone Alternative Income Fund, co-invested with us in this portfolio company pursuant to an exemptive order granted by the U.S. Securities and Exchange Commission.
(L)Non-Control/Non-Affiliate investments, as defined by the 1940 Act, are those that are neither Control nor Affiliate investments and in which we own less than 5.0% of the issued and outstanding voting securities.
(M)Affiliate investments, as defined by the 1940 Act, are those that are not Control investments and in which we own, with the power to vote, between and inclusive of 5.0% and 25.0% of the issued and outstanding voting securities.
(N)Control investments, as defined by the 1940 Act, are those where we have the power to exercise a controlling influence over the management or policies of the portfolio company, which may include owning, with the power to vote, more than 25.0% of the issued and outstanding voting securities.
(O)Fair value was based on net asset value provided by the underlying fund as a practical expedient.
(P)This portfolio company is headquartered in Ontario, Canada.
(Q)Cumulative gross unrealized appreciation for federal income tax purposes is $183.3 million; cumulative gross unrealized depreciation for federal income tax purposes is $144.9 million. Cumulative net unrealized appreciation is $38.5 million, based on a tax cost of $940.9 million.
(R)Valued using Level 1 inputs within the FASB ASC 820 fair value hierarchy. Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.
THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONSOLIDATED FINANCIAL STATEMENTS.
15

Table of Contents
GLADSTONE INVESTMENT CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
SEPTEMBER 30, 2025
(DOLLAR AMOUNTS IN TABLES IN THOUSANDS, EXCEPT PER SHARE DATA AND AS OTHERWISE INDICATED)
(UNAUDITED)
NOTE 1. ORGANIZATION
Gladstone Investment Corporation (“Gladstone Investment”) was incorporated under the General Corporation Law of the State of Delaware on February 18, 2005, and completed an initial public offering on June 22, 2005. The terms “the Company,” “we,” “our” and “us” all refer to Gladstone Investment and its consolidated subsidiaries. We are an externally managed, closed-end, non-diversified management investment company that has elected to be treated as a business development company (“BDC”) under the Investment Company Act of 1940, as amended (the “1940 Act”), and are applying the guidance of Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Topic 946, “Financial Services-Investment Companies” (“ASC 946”). In addition, we have elected to be treated for U.S. federal income tax purposes as a regulated investment company (“RIC”) under the Internal Revenue Code of 1986, as amended (the “Code”). We were established for the purpose of investing in debt and equity securities of established private businesses in the United States (“U.S.”). Debt investments primarily take the form of two types of loans: secured first lien loans and secured second lien loans. Equity investments primarily take the form of preferred or common equity (or warrants or options to acquire the foregoing), often in connection with buyouts and other recapitalizations. Our investment objectives are to: (i) achieve and grow current income by investing in debt securities of established businesses that we believe will provide stable earnings and cash flow to pay expenses, make principal and interest payments on our outstanding indebtedness and make distributions to stockholders that grow over time, and (ii) provide our stockholders with long-term capital appreciation in the value of our assets by investing in equity securities of established businesses, generally in combination with the aforementioned debt securities, that we believe can grow over time to permit us to sell our equity investments for capital gains. We intend that our investment portfolio over time will consist of approximately 75.0% in debt investments and 25.0% in equity investments, at cost. As of September 30, 2025, our investment portfolio was comprised of 71.1% in debt investments and 28.9% in equity investments, at cost.
Gladstone Business Investment, LLC (“Business Investment”), a wholly-owned subsidiary of ours, was established on August 11, 2006 for the sole purpose of holding certain investments pledged as collateral under our line of credit. The financial statements of Business Investment are consolidated with those of Gladstone Investment.
We are externally managed by Gladstone Management Corporation (the “Adviser”), an affiliate of ours and a U.S. Securities and Exchange Commission (“SEC”) registered investment adviser, pursuant to an investment advisory and management agreement (the “Advisory Agreement”). Administrative services are provided by Gladstone Administration, LLC (the “Administrator”), an affiliate of ours and the Adviser, pursuant to an administration agreement (the “Administration Agreement”). Refer to Note 4 — Related Party Transactions for more information regarding these arrangements.
NOTE 2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Unaudited Interim Financial Statements and Basis of Presentation
We prepare our interim financial statements in accordance with accounting principles generally accepted in the U.S. (“GAAP”) for interim financial information and pursuant to the requirements for reporting on Form 10-Q and Articles 6, 10 and 12 of SEC Regulation S-X. Accordingly, we have not included in this quarterly report all of the information and notes required by GAAP for annual financial statements. The accompanying Consolidated Financial Statements include our accounts and the accounts of our wholly-owned subsidiaries. All significant intercompany balances and transactions have been eliminated in consolidation. In accordance with Article 6 of Regulation S-X, we do not consolidate portfolio company investments. Under the investment company rules and regulations pursuant to the American Institute of Certified Public Accountants Audit and Accounting Guide for Investment Companies, codified in ASC 946, we are precluded from consolidating any entity other than another investment company, except that ASC 946 provides for the consolidation of a controlled operating company that provides substantially all of its services to the investment company or its consolidated subsidiaries. In our opinion, all adjustments, consisting solely of normal recurring accruals, necessary for the fair statement of financial statements for the interim periods have been included. The results of operations for the three and six months ended September 30, 2025 are not necessarily indicative of results that ultimately may be achieved for the fiscal year
16

Table of Contents
ending March 31, 2026 or any future interim period. The interim financial statements and notes thereto should be read in conjunction with the financial statements and notes thereto included in our annual report on Form 10-K for the fiscal year ended March 31, 2025, as filed with the SEC on May 13, 2025.
Use of Estimates
Preparing financial statements requires management to make estimates and assumptions that affect the amounts reported in our accompanying Consolidated Financial Statements and these Notes to Consolidated Financial Statements. Actual results may differ from those estimates.
Reclassifications
Certain prior period amounts have been reclassified to conform to the current period presentation in the Consolidated Financial Statements and the accompanying Notes to Consolidated Financial Statements. Reclassifications did not impact net increase (decrease) in net assets resulting from operations, total assets, total liabilities or total net assets, or Consolidated Statements of Changes in Net Assets and Consolidated Statements of Cash Flows classifications.
Cash and Cash Equivalents
We consider all short-term, highly-liquid investments that are both readily convertible to cash and have a maturity of three months or less at the time of purchase to be cash equivalents. Cash and cash equivalents are carried at cost, which approximates fair value. We place our cash with financial institutions, and at times, cash held in checking accounts may exceed the Federal Deposit Insurance Corporation insured limit. We seek to mitigate this concentration of credit risk by depositing funds with major financial institutions.
The following table provides a reconciliation of cash, cash equivalents and restricted cash in the Consolidated Statements of Assets and Liabilities to the total amount shown at the end of the applicable period in the Consolidated Statements of Cash Flows:

| As of September 30, 2025 |  | As of March 31, 2025
Cash | $ | 210 |  |  | $ | 12,944 |
Cash equivalents | 1,217 |  |  | 1,354 |
Restricted cash | 810 |  |  | 856 |
Total cash, cash equivalents and restricted cash | $ | 2,237 |  |  | $ | 15,154 |

Investment Valuation Policy
Accounting Recognition
We record our investments at fair value in accordance with FASB ASC Topic 820, “Fair Value Measurements and Disclosures” (“ASC 820”) and the 1940 Act. Investment transactions are recorded on the trade date. Realized gains or losses are generally measured by the difference between the net proceeds from the repayment or sale and the cost basis of the investment, without regard to unrealized appreciation or depreciation previously recognized, and include investments charged off during the period, net of recoveries. Unrealized appreciation or depreciation primarily reflects the change in investment fair values, including the reversal of previously recorded unrealized appreciation or depreciation when gains or losses are realized.
Board Responsibility
Our board of directors (the “Board of Directors”) has approved investment valuation policies and procedures pursuant to Rule 2a-5 under the 1940 Act (the “Policy”) and designated the Adviser to serve as the Board of Directors’ valuation designee ("Valuation Designee") under the 1940 Act.
In accordance with the 1940 Act, our Board of Directors has the ultimate responsibility for reviewing the good faith fair value determination of our investments for which market quotations are not readily available based on our Policy and for overseeing the Valuation Designee. Such review and oversight includes receiving written fair value determinations and
17

Table of Contents
supporting materials provided by the Valuation Designee, in coordination with the Administrator and with the oversight by the Company's chief valuation officer (collectively, the “Valuation Team”). The Valuation Committee of our Board of Directors (comprised entirely of independent directors) meets to review the valuation determinations and supporting materials, discusses the information provided by the Valuation Team, determines whether the Valuation Team has followed the Policy, and reviews other facts and circumstances, including current valuation risks, conflicts of interest, material valuation matters, appropriateness of valuation methodologies, back-testing results, price challenges/overrides, and ongoing monitoring and oversight of pricing services. After the Valuation Committee concludes its meeting, it and the chief valuation officer, representing the Valuation Designee, present the Valuation Committee’s findings on the Valuation Designee's determinations to the entire Board of Directors so that the full Board of Directors may review the Valuation Designee's determined fair values of such investments in accordance with the Policy.
There is no single standard for determining fair value (especially for privately-held businesses), as fair value depends upon the specific facts and circumstances of each individual investment. In determining the fair value of our investments, the Valuation Team, led by the chief valuation officer, uses the Policy, and each quarter the Valuation Committee and Board of Directors review the Policy to determine if changes thereto are advisable and whether the Valuation Team has applied the Policy consistently.
Use of Third-Party Valuation Firms
The Valuation Team engages third-party valuation firms to provide independent assessments of fair value of certain of our investments.
A third-party valuation firm generally provides estimates of fair value on our debt investments. The Valuation Team generally assigns the third-party valuation firm’s estimates of fair value to our debt investments where we do not have the ability to effectuate a sale of the applicable portfolio company. The Valuation Team corroborates the third-party valuation firm’s estimates of fair value using one or more of the valuation techniques discussed below. The Valuation Team’s estimate of value on a specific debt investment may significantly differ from the third-party valuation firm’s. When this occurs, our Valuation Committee and Board of Directors review whether the Valuation Team has followed the Policy and the Valuation Committee reviews whether the Valuation Designee’s determined fair value is reasonable in light of the Policy and other relevant facts and circumstances.
We may engage other independent valuation firms to provide earnings multiple ranges, as well as other information, and evaluate such information for incorporation into the total enterprise value (“TEV”) of certain of our investments. Generally, at least once per year, we engage an independent valuation firm to value or review the valuation of each of our significant equity investments, which includes providing the information noted above. The Valuation Team evaluates such information for incorporation into our TEV, including review of all inputs provided by the independent valuation firm. The Valuation Team then presents a determination to our Valuation Committee as to the fair value. Our Valuation Committee reviews the determined fair value and whether it is reasonable in light of the Policy and other relevant facts and circumstances.
Valuation Techniques
In accordance with ASC 820, the Valuation Team uses the following techniques when valuing our investment portfolio:
•Total Enterprise Value — In determining the fair value using a TEV, the Valuation Team first calculates the TEV of the portfolio company by incorporating some or all of the following factors: the portfolio company’s ability to make payments and other specific portfolio company attributes; the earnings of the portfolio company (the trailing or projected twelve month revenue or earnings before interest, taxes, depreciation and amortization (“EBITDA”)); EBITDA multiples obtained from our indexing methodology whereby the original transaction EBITDA multiple at the time of our closing is indexed to a general subset of comparable disclosed transactions and EBITDA multiples from recent sales to third parties of similar securities in similar industries; a comparison to publicly traded securities in similar industries; and other pertinent factors. The Valuation Team generally reviews industry statistics and may use outside experts when gathering this information. Once the TEV is determined for a portfolio company, the Valuation Team generally allocates the TEV to the portfolio company’s securities based on the facts and circumstances of the securities, which typically results in the allocation of fair value to securities based on the order of their relative priority in the capital structure. Generally, the Valuation Team uses TEV to value our equity investments and, in the circumstances where we have the ability to effectuate a sale of a portfolio company, our debt investments. When there is equity value or sufficient TEV to cover the principal balance of our debt securities, the fair value of our senior secured debt generally equals or approximates cost.
18

Table of Contents
TEV is primarily calculated using EBITDA and EBITDA multiples; however, TEV may also be calculated using revenue and revenue multiples or a discounted cash flow (“DCF”) analysis whereby future expected cash flows of the portfolio company are discounted to determine a net present value using estimated risk-adjusted discount rates, which incorporate adjustments for nonperformance and liquidity risks.
•Yield Analysis — The Valuation Team generally determines the fair value of our debt investments for which we do not have the ability to effectuate a sale of the applicable portfolio company using the yield analysis, which includes a DCF calculation and assumptions that the Valuation Team believes market participants would use, including: estimated remaining life, current market yield, current leverage, and interest rate spreads. This technique develops a modified discount rate that incorporates risk premiums including, among other things, increased probability of default, increased loss upon default, and increased liquidity risk. Generally, the Valuation Team uses the yield analysis to corroborate both estimates of value provided by a third-party valuation firm and market quotes.
•Market Quotes — For our investments for which a limited market exists, we generally base fair value on readily available and reliable market quotations, which are corroborated by the Valuation Team (generally by using the yield analysis described above). In addition, the Valuation Team assesses trading activity for similar investments and evaluates variances in quotations and other market insights to determine if any available quoted prices are reliable. Typically, the Valuation Team uses the lower indicative bid price in the bid-to-ask price range obtained from the respective originating syndication agent’s trading desk on or near the valuation date. The Valuation Team may take further steps to consider additional information to validate that price in accordance with the Policy. For securities that are publicly traded, we generally base fair value on the closing market price of the securities we hold as of the reporting date. For restricted securities that are publicly traded, we generally base fair value on the closing market price of the securities we hold as of the reporting date less a discount for the restriction, which includes consideration of the nature and term to expiration of the restriction and the lack of marketability of the security.
•Investments in Funds — For equity investments in other funds for which we cannot effectuate a sale of the fund, the Valuation Team generally determines the fair value of our invested capital at the net asset value (“NAV”) provided by the fund. ASC 820 permits an entity holding investments in certain entities that either are investment companies, or have attributes similar to an investment company, and calculate NAV per share or its equivalent for which the fair value is not readily determinable, to measure the fair value of such investments on the basis of that NAV per share, or its equivalent, without adjustment.
In addition to the valuation techniques listed above, the Valuation Team may also consider other factors when determining the fair value of our investments, including: the nature and realizable value of the collateral, including external parties’ guaranties, any relevant offers or letters of intent to acquire the portfolio company, timing of expected loan repayments, and the markets in which the portfolio company operates.
Fair value measurements of our investments may involve subjective judgments and estimates and, due to the uncertainty inherent in valuing these securities, the determinations of fair value may fluctuate from period to period and may differ materially from the values that could be obtained if a ready market for these securities existed. Our NAV could be materially affected if the determinations regarding the fair value of our investments are materially different from the values that we ultimately realize upon our disposal of such securities. Additionally, changes in the market environment and other events that may occur over the life of the investment may cause the gains or losses ultimately realized on these investments to be different than the valuations currently assigned. Further, such investments are generally subject to legal and other restrictions on resale or otherwise are less liquid than publicly traded securities. If we were required to liquidate a portfolio investment in a forced or liquidation sale, we could realize significantly less than the value at which it is recorded.
Refer to Note 3 — Investments for additional information regarding fair value measurements and our application of ASC 820.
Revenue Recognition
Interest Income Recognition
Interest income, adjusted for amortization of premiums, amendment fees and acquisition costs and the accretion of discounts, is recorded on the accrual basis to the extent that such amounts are expected to be collected. Generally, when a
19

Table of Contents
loan becomes 90 days or more past due, or if our qualitative assessment indicates that the debtor is unable to service its debt or other obligations, we will place the loan on non-accrual status and cease recognizing interest income on that loan until the borrower has demonstrated the ability and intent to pay contractual amounts due. However, we remain contractually entitled to this interest. Interest payments received on non-accrual loans may be recognized as income or applied to the cost basis, depending upon management’s judgment. Generally, non-accrual loans are restored to accrual status when past-due principal and interest are paid and, in management’s judgment, are likely to remain current, or, due to a restructuring, the interest income is deemed to be collectible. As of September 30, 2025, our loans to B+T Group Acquisition, Inc. ("B+T"), Diligent Delivery Systems ("Diligent") and Edge Adhesives Holdings, Inc. ("Edge") were on non-accrual status, with an aggregate debt cost basis of $40.3 million, or 5.5% of the cost basis of all debt investments in our portfolio, and an aggregate fair value of $18.7 million, or 2.7% of the fair value of all debt investments in our portfolio. As of March 31, 2025, our loans to B+T, Diligent, Edge and J.R. Hobbs Co. – Atlanta, LLC (“J.R. Hobbs”) were on non-accrual status, with an aggregate debt cost basis of $90.2 million, or 13.1% of the cost basis of all debt investments in our portfolio, and an aggregate fair value of $50.9 million, or 8.2% of the fair value of all debt investments in our portfolio.
Paid-in-kind (“PIK”) interest, computed at the contractual rate specified in the loan agreement, is added to the principal balance of the loan and recorded as interest income. Thus, the actual collection of PIK income may be deferred until the time of debt principal repayment. As of September 30, 2025 and March 31, 2025, we did not have any loans with a PIK interest component.
Success Fee Income Recognition
We record success fees as income when earned, which often occurs upon receipt of cash. Success fees are generally contractually due upon a change of control in a portfolio company, typically resulting from an exit or sale, and are non-recurring.
Dividend Income Recognition
We accrue dividend income on preferred and common equity securities to the extent that such amounts are expected to be collected and if we have the option to collect such amounts in cash or other consideration.
Related Party Fees
We are party to the Advisory Agreement with the Adviser, which is indirectly owned by our chairman and chief executive officer. In accordance with the Advisory Agreement, we pay the Adviser fees as compensation for its services, consisting of a base management fee and an incentive fee. Additionally, we pay the Adviser a loan servicing fee as compensation for its services as servicer under the terms of the Fifth Amended and Restated Credit Agreement dated April 30, 2013, as amended from time to time (the "Credit Facility").
We are also party to the Administration Agreement with the Administrator, which is indirectly owned and controlled by our chairman and chief executive officer, whereby we pay separately for administrative services.
Refer to Note 4 — Related Party Transactions for additional information regarding these related party fees and agreements.
Segment Reporting
In November 2023, the FASB issued Accounting Standards Update 2023-07, “Segment Reporting - Improvements to Reportable Segment Disclosures” ("ASU 2023-07") to improve reportable segments disclosure requirements. ASU 2023-07 requires existing annual segment disclosures to also be disclosed on an interim basis and also requires additional disclosures around significant segment expenses and disclosures to identify the title and position of the chief operating decision maker (“CODM”). The standard is effective for fiscal years beginning after December 15, 2023, and interim periods thereafter. We adopted ASU 2023-07 as of March 31, 2025.
Our current business strategy includes one reporting segment which derives investment income from our portfolio companies. Our CODM is our Chief Executive Officer. The CODM assesses performance based on net investment income, net realized and unrealized gains (losses) and net increase (decrease) in net assets resulting from operations, which are reported on the Consolidated Statement of Operations. The expense categories included on the Consolidated Statement of Operations reflect our significant expense categories and are provided to the CODM on a regular basis.
20

Table of Contents
Recent Accounting Pronouncements
In December 2023, the FASB issued ASU 2023-09, “Income Taxes (Topic 740): Improvements to Income Tax Disclosures” which was issued to enhance the transparency and decision usefulness of income tax disclosures. The new guidance is effective for annual periods beginning after December 15, 2024. The Company evaluated the impact of the new standard on the Company’s consolidated financial statements and related disclosures and does not believe it will have a material impact on its consolidated financial statements or its disclosure.
NOTE 3. INVESTMENTS
Fair Value
In accordance with ASC 820, the fair value of our investments is determined to be the price that would be received for an investment in a current sale, which assumes an orderly transaction between willing market participants on the measurement date. This fair value definition focuses on exit price in the principal, or most advantageous, market and prioritizes, within a measurement of fair value, the use of market-based inputs over entity-specific inputs. ASC 820 also establishes the following three-level hierarchy for fair value measurements based upon the transparency of inputs to the valuation of a financial instrument as of the measurement date.
•Level 1 — inputs to the valuation methodology are quoted prices (unadjusted) for identical financial instruments in active markets;
•Level 2 — inputs to the valuation methodology include quoted prices for similar financial instruments in active or inactive markets, and inputs that are observable for the financial instrument, either directly or indirectly, for substantially the full term of the financial instrument. Level 2 inputs are those in markets for which there are few transactions, the prices are not current, little public information exists, or instances where prices vary substantially over time or among brokered market makers; and
•Level 3 — inputs to the valuation methodology are unobservable and significant to the fair value measurement. Unobservable inputs are those inputs that reflect assumptions that market participants would use when pricing the financial instrument and can include the Valuation Team’s assumptions based upon the best available information.
When a determination is made to classify our investments within Level 3 of the valuation hierarchy, such determination is based upon the significance of the unobservable factors to the overall fair value measurement. However, Level 3 financial instruments typically include, in addition to the unobservable, or Level 3, inputs, observable inputs (or components that are actively quoted and can be validated to external sources). The level in the fair value hierarchy within which the fair value measurement falls is determined based on the lowest level input that is significant to the fair value measurement.
As of September 30, 2025 and March 31, 2025, all of our investments were valued using Level 3 inputs within the ASC 820 fair value hierarchy, except for our investment in money market funds, which was valued using Level 1 inputs, and our investment in Gladstone Alternative Income Fund ("Gladstone Alternative"), which was valued using NAV as a practical expedient.
We transfer investments in and out of Level 1, 2 and 3 of the valuation hierarchy as of the beginning balance sheet date, based on changes in the use of observable and unobservable inputs utilized to perform the valuation for the period. There were no transfers in or out of Level 1, 2 and 3 during the three and six months ended September 30, 2025 and 2024, respectively.
21

Table of Contents
As of September 30, 2025 and March 31, 2025, our investments, by security type, at fair value were categorized as follows within the ASC 820 fair value hierarchy:

| Fair Value Measurements |  |
| Quoted Prices in Active Markets for Identical Assets (Level 1) |  | Significant Other Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3) |  | Fair Value
As of September 30, 2025: |  |  |  |  |  |  |
Secured first lien debt | $ | — |  |  | $ | — |  |  | $ | 593,979 |  |  | $ | 593,979 |
Secured second lien debt | — |  |  | — |  |  | 90,633 |  |  | 90,633 |
Preferred equity | — |  |  | — |  |  | 365,278 |  |  | 365,278 |
Common equity/equivalents | — |  |  | — |  |  | 75,894 |  |  | 75,894 |
Total | $ | — |  |  | $ | — |  |  | $ | 1,125,784 |  |  | $ | 1,125,784 |
Investments measured at NAV (A) | — |  |  | — |  |  | — |  |  | 5,075 |
Total Investments | $ | — |  |  | $ | — |  |  | $ | 1,125,784 |  |  | $ | 1,130,859 |
Cash equivalents | 1,217 |  |  | — |  |  | — |  |  | 1,217 |
Total Investments and Cash Equivalents as of September 30, 2025 | $ | 1,217 |  |  | $ | — |  |  | $ | 1,125,784 |  |  | $ | 1,132,076 |

| Fair Value Measurements |  |
| Quoted Prices in Active Markets for Identical Assets (Level 1) |  | Significant Other Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3) |  | Fair Value
As of March 31, 2025: |  |  |  |  |  |  |
Secured first lien debt | $ | — |  |  | $ | — |  |  | $ | 514,334 |  |  | $ | 514,334 |
Secured second lien debt | — |  |  | — |  |  | 103,580 |  |  | 103,580 |
Preferred equity | — |  |  | — |  |  | 302,163 |  |  | 302,163 |
Common equity/equivalents | — |  |  | — |  |  | 54,268 |  |  | 54,268 |
Total | $ | — |  |  | $ | — |  |  | $ | 974,345 |  |  | $ | 974,345 |
Investments measured at NAV (A) | — |  |  | — |  |  | — |  |  | 4,975 |
Total Investments | $ | — |  |  | $ | — |  |  | $ | 974,345 |  |  | $ | 979,320 |
Cash equivalents | 1,354 |  |  | — |  |  | — |  |  | 1,354 |
Total Investments and Cash Equivalents as of March 31, 2025 | $ | 1,354 |  |  | $ | — |  |  | $ | 974,345 |  |  | $ | 980,674 |

(A)Includes our investment in Gladstone Alternative as of September 30, 2025 and March 31, 2025. Investments that are measured at fair value using NAV as a practical expedient have not been categorized in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the amounts presented elsewhere in this Quarterly Report.
22

Table of Contents
The following table presents our investments, valued using Level 3 inputs within the ASC 820 fair value hierarchy, and carried at fair value as of September 30, 2025 and March 31, 2025, by caption on our accompanying Consolidated Statements of Assets and Liabilities, and by security type:

| Total Recurring Fair Value Measurements Reported in Consolidated Statements of Assets and Liabilities Valued Using Level 3 Inputs
| September 30, 2025 |  | March 31, 2025
Non-Control/Non-Affiliate Investments |  |  |
Secured first lien debt | $ | 393,766 |  |  | $ | 300,751 |
Secured second lien debt | 90,633 |  |  | 92,964 |
Preferred equity | 252,245 |  |  | 200,606 |
Common equity/equivalents | 75,894 |  |  | 54,268 |
Total Non-Control/Non-Affiliate Investments | 812,538 |  |  | 648,589 |
Affiliate Investments |  |  |
Secured first lien debt | 199,443 |  |  | 213,240 |
Secured second lien debt | — |  |  | 10,616 |
Preferred equity | 113,033 |  |  | 101,557 |
Common equity/equivalents | — |  |  | — |
Total Affiliate Investments | 312,476 |  |  | 325,413 |
Control Investments |  |  |
Secured first lien debt | 770 |  |  | 343 |
Secured second lien debt | — |  |  | — |
Preferred equity | — |  |  | — |
Common equity/equivalents | — |  |  | — |
Total Control Investments | 770 |  |  | 343 |
Total investments at fair value using Level 3 inputs | $ | 1,125,784 |  |  | $ | 974,345 |

23

Table of Contents
In accordance with ASC 820, the following table provides quantitative information about our investments valued using Level 3 fair value measurements as of September 30, 2025 and March 31, 2025. The table below is not intended to be all-inclusive, but rather provides information on the significant Level 3 inputs as they relate to our fair value measurements. The weighted-average calculations in the table below are based on the principal balances for all debt-related calculations and on the cost basis for all equity-related calculations for the particular input.

| Quantitative Information about Level 3 Fair Value Measurements
| Fair Value as of |  | Valuation Technique/ Methodology |  | Unobservable Input |  | Range / Weighted-Average as of
| September 30, 2025 |  | March 31, 2025 |  |  |  | September 30, 2025 |  | March 31, 2025
Secured first lien debt | $ | 593,979 |  |  | $ | 514,334 |  |  | TEV |  | EBITDA multiple |  | 3.5x – 8.0x / 6.2x |  | 3.7x – 7.9x / 6.0x
|  |  |  |  |  |  | EBITDA |  | $538 – $23,126 / $11,372 |  | $1,208 – $25,038 / $12,162
|  |  |  |  |  |  | Revenue multiple |  | 0.3x – 0.6x / 0.5x |  | 0.3x – 0.6x / 0.4x
|  |  |  |  |  |  | Revenue |  | $21,649 – $104,790 / $65,258 |  | $6,690 – $102,791 / $72,303
Secured second lien debt | 90,633 |  |  | 90,956 |  |  | TEV |  | EBITDA multiple |  | 5.0x – 7.3x / 6.6x |  | 6.1x – 7.2x / 6.8x
|  |  |  |  |  |  | EBITDA |  | $5,130 – $31,248 / $20,921 |  | $3,637 – $24,234 / $16,900
| — |  |  | 12,624 |  |  | Yield Analysis |  | Discount Rate |  | N/A |  | 20.7% – 20.7% / 20.7%
Preferred equity | 365,278 |  |  | 302,163 |  |  | TEV |  | EBITDA multiple |  | 3.5x – 8.0x / 6.2x |  | 3.7x – 7.9x / 6.1x
|  |  |  |  |  |  | EBITDA |  | $538 – $23,126 / $9,778 |  | $2,153 – $25,038 / $11,029
|  |  |  |  |  |  | Revenue multiple |  | 0.3x – 0.6x / 0.4x |  | 0.3x – 0.6x / 0.4x
|  |  |  |  |  |  | Revenue |  | $21,649 – $104,790 / $79,691 |  | $6,690 – $102,791 / $53,604
Common equity/ equivalents | 75,894 |  |  | 54,268 |  |  | TEV |  | EBITDA multiple |  | 5.0x – 7.3x / 6.9x |  | 5.5x – 7.2x / 6.8x
|  |  |  |  |  |  | EBITDA |  | $714 – $31,248 / $22,994 |  | $1,208 – $24,234 / $18,562
Total | $ | 1,125,784 |  |  | $ | 974,345 |  |  |  |  |  |  |  |  |

Fair value measurements can be sensitive to changes in one or more of the valuation inputs. Changes in discount rates, EBITDA or EBITDA multiples (or revenue or revenue multiples), each in isolation, may change the fair value of certain of our investments. Generally, an increase/(decrease) in market yields or discount rates or a (decrease)/increase in EBITDA or EBITDA multiples (or revenue or revenue multiples) may result in a (decrease)/increase in the fair value of certain of our investments.
24

Table of Contents
Changes in Level 3 Fair Value Measurements of Investments
The following tables provide our portfolio’s changes in fair value, broken out by security type, during the three and six months ended September 30, 2025 and 2024 for all investments for which the Adviser determines fair value using unobservable (Level 3) inputs.
Fair Value Measurements Using Significant Unobservable Inputs (Level 3)

| Secured First Lien Debt |  | Secured Second Lien Debt |  | Preferred Equity |  | Common Equity/ Equivalents |  | Total
Three Months Ended September 30, 2025: |  |  |  |  |  |  |  |  |
Fair value as of June 30, 2025 | $ | 557,057 |  |  | $ | 93,340 |  |  | $ | 325,997 |  |  | $ | 55,341 |  |  | $ | 1,031,735 |
Total gain (loss): |  |  |  |  |  |  |  |  |
Net realized gain (loss)(A) | (29,938) |  |  | — |  |  | — |  |  | — |  |  | (29,938) |
Net unrealized (depreciation) appreciation(B) | (744) |  |  | (2,707) |  |  | 18,181 |  |  | 20,553 |  |  | 35,283 |
Reversal of previously recorded depreciation upon realization(B) | 19,104 |  |  | — |  |  | — |  |  | — |  |  | 19,104 |
New investments, repayments and settlements(C): |  |  |  |  |  |  |  |  |
Issuances / originations | 49,936 |  |  | — |  |  | 21,100 |  |  | — |  |  | 71,036 |
Settlements / repayments | (1,436) |  |  | — |  |  | — |  |  | — |  |  | (1,436) |
Sales | — |  |  | — |  |  | — |  |  | — |  |  | — |
Transfers | — |  |  | — |  |  | — |  |  | — |  |  | — |
Fair value as of September 30, 2025 | $ | 593,979 |  |  | $ | 90,633 |  |  | $ | 365,278 |  |  | $ | 75,894 |  |  | $ | 1,125,784 |

| Secured First Lien Debt |  | Secured Second Lien Debt |  | Preferred Equity |  | Common Equity/ Equivalents |  | Total
Six Months Ended September 30, 2025 |  |  |  |  |  |  |  |  |
Fair value as of March 31, 2025 | $ | 514,334 |  |  | $ | 103,580 |  |  | $ | 302,163 |  |  | $ | 54,268 |  |  | $ | 974,345 |
Total gain (loss): |  |  |  |  |  |  |  |  |
Net realized gain (loss)(A) | (29,938) |  |  | — |  |  | — |  |  | — |  |  | (29,938) |
Net unrealized appreciation (depreciation)(B) | 409 |  |  | (2,331) |  |  | 14,497 |  |  | 21,626 |  |  | 34,201 |
Reversal of previously recorded depreciation upon realization(B) | 19,104 |  |  | — |  |  | — |  |  | — |  |  | 19,104 |
New investments, repayments and settlements(C): |  |  |  |  |  |  |  |  |
Issuances / originations | 95,876 |  |  | — |  |  | 38,002 |  |  | — |  |  | 133,878 |
Settlements / repayments | (5,806) |  |  | — |  |  | — |  |  | — |  |  | (5,806) |
Sales | — |  |  | — |  |  | — |  |  | — |  |  | — |
Transfers(D) | — |  |  | (10,616) |  |  | 10,616 |  |  | — |  |  | — |
Fair value as of September 30, 2025 | $ | 593,979 |  |  | $ | 90,633 |  |  | $ | 365,278 |  |  | $ | 75,894 |  |  | $ | 1,125,784 |

25

Table of Contents

| Secured First Lien Debt |  | Secured Second Lien Debt |  | Preferred Equity |  | Common Equity/ Equivalents |  | Total
Three Months Ended September 30, 2024: |  |  |  |  |  |  |  |  |
Fair value as of June 30, 2024 | $ | 463,219 |  |  | $ | 137,827 |  |  | $ | 212,591 |  |  | $ | 85,501 |  |  | $ | 899,138 |
Total gain (loss): |  |  |  |  |  |  |  |  |
Net realized gain (loss)(A) | — |  |  | — |  |  | — |  |  | 42,284 |  |  | 42,284 |
Net unrealized (depreciation) appreciation (B) | (13,239) |  |  | (1,483) |  |  | 15,937 |  |  | 2,701 |  |  | 3,916 |
Reversal of previously recorded (appreciation) depreciation upon realization(B) | — |  |  | — |  |  | — |  |  | (38,028) |  |  | (38,028) |
New investments, repayments and settlements(C): |  |  |  |  |  |  |  |  |
Issuances / originations | 19,500 |  |  | — |  |  | — |  |  | — |  |  | 19,500 |
Settlements / repayments | — |  |  | (25,000) |  |  | — |  |  | — |  |  | (25,000) |
Sales | — |  |  | — |  |  | — |  |  | (48,503) |  |  | (48,503) |
Transfers | — |  |  | — |  |  | — |  |  | — |  |  | — |
Fair value as of September 30, 2024 | $ | 469,480 |  |  | $ | 111,344 |  |  | $ | 228,528 |  |  | $ | 43,955 |  |  | $ | 853,307 |

| Secured First Lien Debt |  | Secured Second Lien Debt |  | Preferred Equity |  | Common Equity/ Equivalents |  | Total
Six Months Ended September 30, 2024: |  |  |  |  |  |  |  |  |
Fair value as of March 31, 2024 | $ | 474,856 |  |  | $ | 138,703 |  |  | $ | 213,480 |  |  | $ | 93,447 |  |  | $ | 920,486 |
Total gain (loss): |  |  |  |  |  |  |  |  |
Net realized gain (loss)(A) | — |  |  | — |  |  | — |  |  | 42,284 |  |  | 42,284 |
Net unrealized appreciation (depreciation)(B) | (22,474) |  |  | (2,359) |  |  | 15,048 |  |  | (5,245) |  |  | (15,030) |
Reversal of previously recorded (appreciation) depreciation upon realization(B) | — |  |  | — |  |  | — |  |  | (38,028) |  |  | (38,028) |
New investments, repayments and settlements(C): |  |  |  |  |  |  |  |  |
Issuances / originations | 20,098 |  |  | — |  |  | — |  |  | — |  |  | 20,098 |
Settlements / repayments | (3,000) |  |  | (25,000) |  |  | — |  |  | — |  |  | (28,000) |
Sales | — |  |  | — |  |  | — |  |  | (48,503) |  |  | (48,503) |
Transfers | — |  |  | — |  |  | — |  |  | — |  |  | — |
Fair value as of September 30, 2024 | $ | 469,480 |  |  | $ | 111,344 |  |  | $ | 228,528 |  |  | $ | 43,955 |  |  | $ | 853,307 |

(A)Included in net realized gain (loss) on investments on our accompanying Consolidated Statements of Operations for the respective three and six months ended September 30, 2025 and 2024.
(B)Included in net unrealized appreciation (depreciation) of investments on our accompanying Consolidated Statements of Operations for the respective three and six months ended September 30, 2025 and 2024.
(C)Includes increases in the cost basis of investments resulting from new portfolio investments, the amortization of discounts and other non-cash disbursements to portfolio companies, as well as decreases in the cost basis of investments resulting from principal repayments or sales, the amortization of premiums and acquisition costs, and other cost-basis adjustments.
(D)Transfers represent secured second lien debt of PSI Molded Plastics, Inc. ("PSI Molded") with a total cost basis of $10.6 million, which was converted to preferred equity in June 2025.
Investment Activity
During the six months ended September 30, 2025, the following significant transactions occurred:
•In May 2025, we invested $49.5 million in a new portfolio company, Smart Chemical Solutions, LLC ("Smart Chemical"), in the form of $35.7 million of secured first lien debt and $13.8 million of preferred equity. Smart
26

Table of Contents
Chemical, headquartered in Midland, Texas, is a provider of production chemicals for onshore oil and gas operators throughout the United States.
•In May 2025, we invested $12.8 million in a new portfolio company, Sun State Nursery and Landscaping, LLC ("Sun State"), in the form of $9.8 million of secured first lien debt and $3.1 million of preferred equity. Sun State, headquartered in Jacksonville, Florida, is a commercial landscaping installation and maintenance provider in the Jacksonville area.
•In June 2025, we restructured our investment in PSI Molded. As a result of the restructuring, we converted debt with a cost basis of $10.6 million into preferred equity.
•In July 2025, we invested $67.6 million in a new portfolio company, Global GRAB Technologies, Inc. ("Global GRAB"), in the form of $46.5 million of secured first lien debt and $21.1 million of preferred equity. Global GRAB, headquartered in Franklin, Tennessee, is a provider of turnkey perimeter security and hostile vehicle mitigation systems, serving various government and commercial organizations.
•In September 2025, we entered into a new $20.0 million secured first lien term loan with J.R. Hobbs, restructuring our previously outstanding first lien term loans and line of credit with an aggregate total cost basis of $49.9 million, which resulted in a realized loss of $29.9 million.
Investment Concentrations
As of September 30, 2025, our investment portfolio consisted of investments in 28 portfolio companies located in 20 states and Canada across 16 different industries with an aggregate fair value of approximately $1.1 billion. Our investments in SFEG Holdings, Inc., The E3 Company, LLC, Detroit Defense, Inc., Dema/Mai Holdings, Inc. and Brunswick Bowling Products, Inc. represented our five largest portfolio investments at fair value and collectively comprised $437.4 million, or 38.7%, of our total investment portfolio at fair value as of September 30, 2025.
The following table summarizes our investments by security type as of September 30, 2025 and March 31, 2025:

| September 30, 2025 |  | March 31, 2025
| Cost |  | Fair Value |  | Cost |  | Fair Value
Secured first lien debt | $ | 644,158 |  | 62.1 | % |  | $ | 593,979 |  | 52.5 | % |  | $ | 584,026 |  | 62.2 | % |  | $ | 514,334 |  | 52.5 | %
Secured second lien debt | 93,340 |  | 9.0 | % |  | 90,633 |  | 8.0 | % |  | 103,956 |  | 11.1 | % |  | 103,580 |  | 10.6 | %
Total debt | 737,498 |  | 71.1 | % |  | 684,612 |  | 60.5 | % |  | 687,982 |  | 73.3 | % |  | 617,914 |  | 63.1 | %
Preferred equity | 250,105 |  | 24.1 | % |  | 365,278 |  | 32.3 | % |  | 201,487 |  | 21.5 | % |  | 302,163 |  | 30.9 | %
Common equity/equivalents | 49,597 |  | 4.8 | % |  | 80,969 |  | 7.2 | % |  | 49,597 |  | 5.2 | % |  | 59,243 |  | 6.0 | %
Total equity/equivalents | 299,702 |  | 28.9 | % |  | 446,247 |  | 39.5 | % |  | 251,084 |  | 26.7 | % |  | 361,406 |  | 36.9 | %
Total investments | $ | 1,037,200 |  | 100.0 | % |  | $ | 1,130,859 |  | 100.0 | % |  | $ | 939,066 |  | 100.0 | % |  | $ | 979,320 |  | 100.0 | %

27

Table of Contents
Investments at fair value consisted of the following industry classifications as of September 30, 2025 and March 31, 2025:

| September 30, 2025 |  | March 31, 2025
| Fair Value |  | Percentage of Total Investments |  | Fair Value |  | Percentage of Total Investments
Diversified/Conglomerate Services | $ | 189,018 |  |  | 16.7 | % |  | $ | 170,360 |  |  | 17.4 | %
Aerospace and Defense | 172,193 |  |  | 15.2 | % |  | 107,869 |  |  | 10.9 | %
Home and Office Furnishings, Housewares, and Durable Consumer Products | 152,666 |  |  | 13.6 | % |  | 159,236 |  |  | 16.3 | %
Machinery (Non-Agriculture, Non-Construction, and Non-Electronic) | 130,538 |  |  | 11.6 | % |  | 105,432 |  |  | 10.8 | %
Leisure, Amusement, Motion Pictures, and Entertainment | 84,102 |  |  | 7.4 | % |  | 78,460 |  |  | 8.0 | %
Oil and Gas | 83,054 |  |  | 7.3 | % |  | 69,589 |  |  | 7.1 | %
Buildings and Real Estate | 73,492 |  |  | 6.5 | % |  | 69,320 |  |  | 7.1 | %
Electronics | 71,875 |  |  | 6.4 | % |  | 71,573 |  |  | 7.2 | %
Chemicals, Plastics, and Rubber | 51,182 |  |  | 4.5 | % |  | 11,612 |  |  | 1.2 | %
Healthcare, Education, and Childcare | 45,767 |  |  | 4.0 | % |  | 51,501 |  |  | 5.3 | %
Mining, Steel, Iron and Non-Precious Metals | 38,304 |  |  | 3.4 | % |  | 41,010 |  |  | 4.2 | %
Printing and Publishing | 11,325 |  |  | 1.0 | % |  | 11,681 |  |  | 1.2 | %
Cargo Transport | 10,293 |  |  | 0.9 | % |  | 12,624 |  |  | 1.3 | %
Other < 2.0% | 17,050 |  |  | 1.5 | % |  | 19,053 |  |  | 2.0 | %
Total investments | $ | 1,130,859 |  |  | 100.0 | % |  | $ | 979,320 |  |  | 100.0 | %

Investments at fair value were included in the following geographic regions of the U.S. and Canada as of September 30, 2025 and March 31, 2025:

| September 30, 2025 |  | March 31, 2025
Location | Fair Value |  | Percentage of Total Investments |  | Fair Value |  | Percentage of Total Investments
United States |  |  |  |  |  |  |
South | $ | 485,593 |  |  | 42.9 | % |  | $ | 317,294 |  |  | 32.4 | %
West | 223,709 |  |  | 19.8 | % |  | 222,062 |  |  | 22.7 | %
Midwest | 211,483 |  |  | 18.7 | % |  | 227,415 |  |  | 23.2 | %
Northeast | 183,216 |  |  | 16.2 | % |  | 182,669 |  |  | 18.7 | %
Canada | 26,858 |  |  | 2.4 | % |  | 29,880 |  |  | 3.0 | %
Total investments | $ | 1,130,859 |  |  | 100.0 | % |  | $ | 979,320 |  |  | 100.0 | %

The geographic region indicates the location of the headquarters for our portfolio companies. A portfolio company may have additional business locations in other geographic regions.
28

Table of Contents
Investment Principal Repayments
The following table summarizes the contractual principal repayment and maturity of our investment portfolio by fiscal year, assuming no voluntary prepayments, as of September 30, 2025:

|  |  | Amount
For the remaining six months ending March 31, 2026 |  | $ | 15,000 |
For the fiscal years ending March 31: |  |
| 2027 |  | 61,186 |
| 2028 |  | 120,282 |
| 2029 |  | 269,844 |
| 2030 |  | 159,506 |
| Thereafter |  | 111,680 |
| Total contractual repayments |  | $ | 737,498 |
| Investments in equity securities |  | 299,702 |
| Total cost basis of investments held as of September 30, 2025: |  | $ | 1,037,200 |

Receivables from Portfolio Companies
Receivables from portfolio companies represent non-recurring costs that we incurred on behalf of portfolio companies. Such receivables, net of any allowance for uncollectible receivables, are included in Other assets, net on our accompanying Consolidated Statements of Assets and Liabilities. We generally maintain an allowance for uncollectible receivables from portfolio companies when the receivable balance becomes 90 days or more past due or if it is determined, based upon management’s judgment, that the portfolio company is unable to pay its obligations. We write off accounts receivable when we have exhausted collection efforts and have deemed the receivables uncollectible. As of September 30, 2025 and March 31, 2025, we had gross receivables from portfolio companies of $2.4 million and $2.3 million, respectively. As of September 30, 2025 and March 31, 2025, the allowance for uncollectible receivables was $1.4 million and $1.7 million, respectively.
NOTE 4. RELATED PARTY TRANSACTIONS
Transactions with the Adviser
We pay the Adviser certain fees as compensation for its services under the Advisory Agreement, consisting of a base management fee and an incentive fee and a loan servicing fee for the Adviser’s role as servicer pursuant to our Credit Facility, all as described below. Our Board of Directors, including a majority of the directors who are not parties to the Advisory Agreement or interested persons of either party, approved the Advisory Agreement.
One of our executive officers, David Gladstone (our chairman and chief executive officer) serves as a director and executive officer of the Adviser, which, as of September 30, 2025, is 100% indirectly owned by Mr. Gladstone. David Dullum (our president) is also the executive vice president of private equity (buyouts) of the Adviser. Michael LiCalsi, our chief administrative officer, co-general counsel and co-secretary, also serves in the same roles for the Adviser. Erich Hellmold, our co-general counsel and co-secretary, serves in the same roles for the Adviser.
29

Table of Contents
The following table summarizes the base management fees, loan servicing fees, incentive fees, and associated non-contractual, unconditional, and irrevocable credits reflected in our accompanying Consolidated Statements of Operations:

| Three Months Ended September 30, |  | Six Months Ended September 30,
| 2025 |  | 2024 |  | 2025 |  | 2024
Average total assets subject to base management fee(A)(B) | $ | 1,091,400 |  |  | $ | 889,400 |  |  | $ | 1,053,700 |  |  | $ | 906,500 |
Multiplied by prorated annual base management fee of 2.0% | 0.5 | % |  | 0.5 | % |  | 1.0 | % |  | 1.0 | %
Base management fee(C) | 5,457 |  |  | 4,447 |  |  | 10,537 |  |  | 9,065 |
Credits to fees from Adviser - other(C) | (1,638) |  |  | (669) |  |  | (3,037) |  |  | (1,296) |
Net base management fee | $ | 3,819 |  |  | $ | 3,778 |  |  | $ | 7,500 |  |  | $ | 7,769 |
Loan servicing fee(C) | $ | 2,932 |  |  | $ | 2,194 |  |  | 5,604 |  |  | 4,416 |
Credits to base management fee - loan servicing fee(C) | (2,932) |  |  | (2,194) |  |  | (5,604) |  |  | (4,416) |
Net loan servicing fee | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Incentive fee – income-based | $ | 310 |  |  | $ | 594 |  |  | $ | 310 |  |  | $ | 594 |
Incentive fee – capital gains-based(D) | 4,897 |  |  | 1,638 |  |  | 4,688 |  |  | (2,150) |
Total incentive fee(C) | $ | 5,207 |  |  | $ | 2,232 |  |  | $ | 4,998 |  |  | $ | (1,556) |
Credits to fees from Adviser - other(C) | — |  |  | — |  |  | — |  |  | — |
Net total incentive fee | $ | 5,207 |  |  | $ | 2,232 |  |  | $ | 4,998 |  |  | $ | (1,556) |

(A)Average total assets subject to the base management fee is defined in the Advisory Agreement as total assets, including investments made with proceeds of borrowings, less any uninvested cash or cash equivalents resulting from borrowings, valued at the end of the applicable quarters within the respective periods and adjusted appropriately for any share issuances or repurchases during the periods.
(B)Excludes our investment in Gladstone Alternative valued at the end of the applicable quarters within the respective periods.
(C)Reflected as a line item on our accompanying Consolidated Statements of Operations.
(D)The capital gains-based incentive fees are recorded in accordance with GAAP and do not necessarily reflect amounts contractually due under the terms of the Advisory Agreement.
Base Management Fee
The base management fee is payable quarterly to the Adviser pursuant to our Advisory Agreement and is assessed at an annual rate of 2.0%, computed on the basis of the value of our average gross assets at the end of the two most recently completed quarters (inclusive of the current quarter), which are total assets, including investments made with proceeds of borrowings, less any uninvested cash or cash equivalents resulting from borrowings, valued at the end of the applicable quarters within the respective period and adjusted appropriately for any share issuances or repurchases during the period.
Additionally, pursuant to the requirements of the 1940 Act, the Adviser makes available significant managerial assistance to our portfolio companies. The Adviser may also provide other services to our portfolio companies under certain agreements and may receive fees for services other than managerial assistance. Such services may include: (i) assistance obtaining, sourcing or structuring credit facilities, long term loans or additional equity from unaffiliated third parties; (ii) negotiating important contractual financial relationships; (iii) consulting services regarding restructuring of the portfolio company and financial modeling as it relates to raising additional debt and equity capital from unaffiliated third parties; and (iv) taking a primary role in interviewing, vetting and negotiating employment contracts with candidates in connection with adding and retaining key portfolio company management team members. The Adviser non-contractually, unconditionally, and irrevocably credits 100% of any fees received for such services against the base management fee that we would otherwise be required to pay to the Adviser; however, pursuant to the terms of the Advisory Agreement, a small percentage of certain of such fees was retained by the Adviser in the form of reimbursement, at cost, for tasks completed by personnel of the Adviser, primarily related to the valuation of portfolio companies. For the three and six months ended September 30, 2025, these credits totaled $130 thousand and $239 thousand, respectively. For the three and six months ended September 30, 2024, these credits totaled $77 thousand and $152 thousand, respectively.
30

Table of Contents
Loan Servicing Fee
The Adviser also services the loans held by our wholly-owned subsidiary, Business Investment (the borrower under our Credit Facility), in return for which the Adviser receives a 2.0% annual fee based on the monthly aggregate outstanding balance of loans pledged under the Credit Facility. Since Business Investment is a consolidated subsidiary of ours, coupled with the fact that the total base management fee paid to the Adviser pursuant to the Advisory Agreement cannot exceed 2.0% of total assets (less any uninvested cash or cash equivalents resulting from borrowings) during any given calendar year, we treat payment of the loan servicing fee pursuant to the Credit Facility as a pre-payment of the base management fee under the Advisory Agreement. Accordingly, these loan servicing fees are 100% non-contractually, unconditionally, and irrevocably credited back to us by the Adviser.
Incentive Fee
The incentive fee payable to the Adviser under our Advisory Agreement consists of two parts: an income-based incentive fee and a capital gains-based incentive fee.
The income-based incentive fee rewards the Adviser if our quarterly net investment income (before giving effect to any incentive fee) exceeds 1.75% of our net assets, which we define as total assets less indebtedness and before taking into account any incentive fees payable or contractually due but not payable during the period, at the end of the immediately preceding calendar quarter, adjusted appropriately for any share issuances or repurchases during the period (the “Hurdle Rate”). The income-based incentive fee with respect to our pre-incentive fee net investment income is payable quarterly to the Adviser and is computed as follows:
•No incentive fee in any calendar quarter in which our pre-incentive fee net investment income does not exceed the Hurdle Rate;
•100.0% of our pre-incentive fee net investment income with respect to that portion of such pre-incentive fee net investment income, if any, that exceeds the Hurdle Rate but is less than 2.1875% of our net assets, adjusted appropriately for any share issuances or repurchases during the period, in any calendar quarter; and
•20.0% of the amount of our pre-incentive fee net investment income, if any, that exceeds 2.1875% of our net assets, adjusted appropriately for any share issuances or repurchases during the period, in any calendar quarter.
The second part of the incentive fee is a capital gains-based incentive fee that is determined and payable in arrears as of the end of each fiscal year (or upon termination of the Advisory Agreement, as of the termination date), and equals 20.0% of our realized capital gains, less any realized capital losses and unrealized depreciation, calculated as of the end of the preceding calendar year. The capital gains-based incentive fee payable to the Adviser is calculated based on (i) cumulative aggregate realized capital gains since our inception, less (ii) cumulative aggregate realized capital losses since our inception, less (iii) the entire portfolio’s aggregate unrealized capital depreciation, if any, as of the date of the calculation. If this number is positive at the applicable calculation date, then the capital gains-based incentive fee for such year equals 20.0% of such amount, less the aggregate amount of any capital gains-based incentive fees paid in respect of our portfolio in all prior years. For calculation purposes, cumulative aggregate realized capital gains, if any, equals the sum of the excess between the net sales price of each investment, when sold, and the original cost of such investment since our inception. Cumulative aggregate realized capital losses equals the sum of the deficit between the net sales price of each investment, when sold, and the original cost of such investment since our inception. The entire portfolio’s aggregate unrealized capital depreciation, if any, equals the sum of the deficit between the fair value of each investment security as of the applicable calculation date and the original cost of such investment security. As of September 30, 2025, no capital gains-based incentive fees were contractually due to the Adviser. For the year ended March 31, 2025, $4.9 million of capital gains-based incentive fees were contractually due and paid to the Adviser.
31

Table of Contents
In accordance with GAAP, accrual of the capital gains-based incentive fee is determined as if our investments had been liquidated at their fair values as of the end of the reporting period. Therefore, GAAP requires that the capital gains-based incentive fee accrual consider the aggregate unrealized capital appreciation in the calculation, as a capital gains-based incentive fee would be payable if such unrealized capital appreciation were realized. There can be no assurance that any such unrealized capital appreciation will be realized in the future. Accordingly, a GAAP accrual is calculated at the end of the reporting period based on (i) cumulative aggregate realized capital gains since our inception, plus (ii) the entire portfolio’s aggregate unrealized capital appreciation, if any, less (iii) cumulative aggregate realized capital losses since our inception, less (iv) the entire portfolio’s aggregate unrealized capital depreciation, if any. If such amount is positive at the end of a reporting period, a capital gains-based incentive fee equal to 20.0% of such amount, less the aggregate amount of capital gains-based incentive fees accrued in all prior years, is recorded, regardless of whether such amount is contractually due under the terms of the Advisory Agreement. If such amount is negative, then there is no accrual for such period and prior period accruals are reversed, as appropriate. During the three and six months ended September 30, 2025, we recorded an accrual of capital gains-based incentive fees of $4.9 million and $4.7 million, respectively. During the three and six months ended September 30, 2024, we recorded an accrual of capital gains-based incentive fees of $1.6 million and a reversal of capital gains-based incentive fees of $2.2 million, respectively. As of September 30, 2025 and March 31, 2025, we had accrued capital gains-based incentive fees of $44.0 million and $39.3 million, respectively.
Transactions with the Administrator
We reimburse the Administrator pursuant to the Administration Agreement for our allocable portion of the Administrator’s expenses incurred while performing services to us, which are primarily rent and salaries and benefits expenses of the Administrator’s employees, including our chief financial officer and treasurer, chief valuation officer, chief compliance officer, and co-general counsels and co-secretaries, and their respective staffs. One of our executive officers, David Gladstone (our chairman and chief executive officer) serves as a member of the board of managers and executive officer of the Administrator, which is 100% indirectly owned and controlled by Mr. Gladstone. Mr. LiCalsi, our co-general counsel and co-secretary, also serves in the same roles for the Administrator (in addition to serving as president of the Administrator). Mr. Hellmold, our co-general counsel and co-secretary, also serves in the same roles for the Administrator.
Our allocable portion of the Administrator’s expenses is generally derived by multiplying the Administrator’s total expenses by the approximate percentage of time during the current quarter the Administrator’s employees performed services for us in relation to their time spent performing services for all companies serviced by the Administrator. On July 10, 2025, our Board of Directors, including a majority of the directors who are not parties to the Administration Agreement or interested persons of either party, approved the annual renewal of the Administration Agreement through August 31, 2026. Administration fees for the three and six months ended September 30, 2025 were $0.5 million and $1.0 million, respectively. Administration fees for the three and six months ended September 30, 2024 were $0.6 million and $1.1 million, respectively.
Transactions with Gladstone Securities, LLC
Gladstone Securities, LLC (“Gladstone Securities”) is a privately held broker dealer registered with the Financial Industry Regulatory Authority and insured by the Securities Investor Protection Corporation. Gladstone Securities is an affiliate of ours, as its parent company is 100% indirectly owned and controlled by David Gladstone, our chairman and chief executive officer. Mr. Gladstone also serves on the board of managers of Gladstone Securities.
From time to time, Gladstone Securities provides services, such as investment banking and due diligence services, to certain of our portfolio companies, for which it receives a fee. Any such fees paid by portfolio companies to Gladstone Securities do not impact the fees we pay to the Adviser or the non-contractual, unconditional, and irrevocable credits against the base management fee. During the three and six months ended September 30, 2025, the fees received by Gladstone Securities from our portfolio companies totaled $0.7 million and $1.3 million, respectively. During the three and six months ended September 30, 2024, the fees received by Gladstone Securities from our portfolio companies totaled $0.2 million for each period.
Investment in Affiliated Fund
In December 2024, we invested in Gladstone Alternative, one of our affiliated funds, that is a registered, non-diversified, closed-end management investment company that operates as an interval fund. The fair value of the investment in Gladstone Alternative is excluded from the average total assets subject to base management fee for the purposes of calculating the base management fee we pay to the Adviser.
32

Table of Contents
Related Party Fees Due
Amounts due to related parties on our accompanying Consolidated Statements of Assets and Liabilities were as follows:

| As of September 30, |  | As of March 31,
| 2025 |  | 2025
Base management and loan servicing fee due to Adviser, net of credits | $ | 1,630 |  |  | $ | 2,027 |
Incentive fee due to Adviser(A) | 44,323 |  |  | 41,663 |
Other due to Adviser | 109 |  |  | 126 |
Total fees due to Adviser | 46,062 |  |  | 43,817 |
Fee due to Administrator | 527 |  |  | 767 |
Total related party fees due | $ | 46,589 |  |  | $ | 44,584 |

(A)Includes a capital gains-based incentive fee of $44.0 million and $39.3 million as of September 30, 2025 and March 31, 2025, respectively, recorded in accordance with GAAP requirements, and which was not contractually due under the terms of the Advisory Agreement. Refer to Note 4 — Related Party Transactions — Transactions with the Adviser — Incentive Fee for additional information, including capital gains-based incentive fee payments made.
Co-investment expenses as of both September 30, 2025 and March 31, 2025 were $0.1 million. These amounts are generally settled in the quarter subsequent to being incurred and have been included in Other assets, net on the accompanying Consolidated Statements of Assets and Liabilities.
NOTE 5. BORROWINGS
Revolving Line of Credit
As of September 30, 2025, our Credit Facility had a total commitment amount of $270.0 million with an "accordion" feature that permits us to increase the size of the facility to $300.0 million. The Credit Facility has a revolving period end date of October 30, 2026 and a final maturity date of October 30, 2028 (at which time all principal and interest will be due and payable if the Credit Facility is not extended by the revolving period end date).
Advances under the Credit Facility generally bear interest at 30-day Term SOFR, subject to a floor of 0.35%, with a SOFR credit spread adjustment of 10 basis points, plus a margin of 3.15% per annum until October 30, 2026, with the margin then increasing to 3.40% for the period from October 30, 2026 to October 30, 2027, and increasing further to 3.65% thereafter. The Credit Facility has an unused commitment fee on the daily unused commitment amount of 0.50% per annum if the daily unused commitment amount is less than or equal to 50% of the total commitment amount, 0.75% per annum if the daily unused commitment amount is greater than 50% but less than or equal to 65% of the total commitment amount, and 1.00% per annum if the daily unused commitment amount is greater than 65% of the total commitment amount.
33

Table of Contents
The following tables summarize noteworthy information related to our Credit Facility:

| As of September 30, 2025 |  | As of March 31, 2025
Commitment amount | $ | 270,000 |  | $ | 270,000
Borrowings outstanding at cost | $ | 97,700 |  | $ | —
Availability(A) | $ | 172,300 |  | $ | 270,000

| For the Three Months Ended September 30, |  | For the Six Months Ended September 30, |  |
| 2025 |  | 2024 |  | 2025 |  | 2024 |  |  |  |  |
Weighted-average borrowings outstanding | $ | 107,599 |  |  | $ | 60,808 |  |  | $ | 72,153 |  |  | $ | 62,766 |  |  |  |  |  |
Effective interest rate(B) | 8.9 | % |  | 11.0 | % |  | 10.2 | % |  | 10.9 | % |  |  |  |  |
Unused commitment fees incurred | $ | 328 |  |  | $ | 320 |  |  | $ | 920 |  |  | $ | 661 |  |  |  |  |  |

(A)Availability is subject to various constraints, characteristics and applicable advance rates based on collateral quality under our Credit Facility, which equated to an adjusted availability of $172.3 million and $270.0 million as of September 30, 2025 and March 31, 2025, respectively.
(B)Excludes the impact of deferred financing costs and includes unused commitment fees.
Among other things, our Credit Facility contains a performance guaranty that requires us to maintain: (i) a minimum net worth of the greater of $210.0 million or $210.0 million plus 50% of all equity and subordinated debt raised, minus 50% of any equity or subordinated debt redeemed or retired after November 16, 2016, which equated to $432.4 million as of September 30, 2025; (ii) asset coverage with respect to senior securities representing indebtedness of at least 150% (or such percentage as may be set forth in Section 18 of the 1940 Act, as modified by Section 61 of the 1940 Act); and (iii) our status as a BDC under the 1940 Act and as a RIC under the Code. As of September 30, 2025, and as defined in the performance guaranty of our Credit Facility, we had a net worth of $991.8 million, asset coverage on our senior securities representing indebtedness of 193.2%, calculated in compliance with the requirements of Sections 18 and 61 of the 1940 Act, and an active status as a BDC and RIC. As of September 30, 2025, we were in compliance with all covenants under our Credit Facility.
Fair Value
We elected to apply the fair value option of ASC Topic 825, “Financial Instruments,” to the Credit Facility, which was consistent with our application of ASC 820 to our investments. Generally, the fair value of our Credit Facility is determined using a yield analysis, which includes a DCF calculation and also takes into account the assumptions the Valuation Team believes market participants would use, including the estimated remaining life, counterparty credit risk, current market yield and interest rate spreads of similar securities as of the measurement date. As of September 30, 2025, the discount rate used to determine the fair value of our Credit Facility was 30-day Term SOFR, with a 0.35% floor, plus a margin of 2.90% per annum, plus an unused commitment fee of 0.75%. As of March 31, 2025, the discount rate used to determine the fair value of our Credit Facility was 30-day Term SOFR, with a 0.35% floor, plus a margin of 3.25% per annum, plus an unused commitment fee of 1.0%. Generally, an increase or decrease in the discount rate used in the DCF calculation may result in a corresponding decrease or increase, respectively, in the fair value of our Credit Facility. As of each of September 30, 2025 and March 31, 2025, our Credit Facility was valued using Level 3 inputs and any changes in its fair value are recorded in Net unrealized appreciation (depreciation) of other on our accompanying Consolidated Statements of Operations.
The following tables provide relevant information and disclosures about our Credit Facility as of September 30, 2025 and March 31, 2025 and for the three and six months ended September 30, 2025 and 2024, as required by ASC 820:

| Level 3 – Borrowings
| Recurring Fair Value Measurements Reported in Consolidated Statements of Assets and Liabilities Using Significant Unobservable Inputs (Level 3)
| September 30, 2025 |  | March 31, 2025
Credit Facility | $ | 98,053 |  |  | $ | — |

34

Table of Contents

Fair Value Measurements of Borrowings Using Significant Unobservable Inputs (Level 3) Reported in Consolidated Statements of Assets and Liabilities
| Credit Facility
Three Months Ended September 30, 2025: |
Fair value at June 30, 2025 | $ | 62,269 |
Borrowings | 75,800 |
Repayments | (40,100) |
Unrealized appreciation | 84 |
Fair value at September 30, 2025 | $ | 98,053 |
Six Months Ended September 30, 2025 |
Fair value at March 31, 2025 | $ | — |
Borrowings | 153,300 |
Repayments | (55,600) |
Unrealized appreciation | 353 |
Fair value at September 30, 2025 | $ | 98,053 |

Fair Value Measurements of Borrowings Using Significant Unobservable Inputs (Level 3) Reported in Consolidated Statements of Assets and Liabilities
| Credit Facility
Three Months Ended September 30, 2024: |
Fair value at June 30, 2024 | $ | 63,700 |
Borrowings | 31,500 |
Repayments | (86,300) |
Fair value at September 30, 2024 | $ | 8,900 |
Six Months Ended September 30, 2024 |
Fair value at March 31, 2024 | $ | 67,000 |
Borrowings | 47,800 |
Repayments | (105,900) |
Fair value at September 30, 2024 | $ | 8,900 |

The fair value of the collateral under our Credit Facility was $1.0 billion and $764.7 million as of September 30, 2025 and March 31, 2025, respectively.
Notes Payable
5.00% Notes due 2026
In March 2021, we completed a public offering of 5.00% Notes due 2026 with an aggregate principal amount of $127.9 million (the “5.00% 2026 Notes”), which resulted in net proceeds of approximately $123.8 million after deducting underwriting discounts, commissions and offering costs borne by us. The 5.00% 2026 Notes are traded under the ticker symbol “GAINN” on the Nasdaq Global Select Market (“Nasdaq”). The 5.00% 2026 Notes will mature on May 1, 2026 and may be redeemed in whole or in part at any time or from time to time at the Company’s option. The 5.00% 2026 Notes bear interest at a rate of 5.00% per year, which is payable quarterly in arrears.
The indenture relating to the 5.00% 2026 Notes contains certain covenants, including (i) an inability to incur additional debt or issue additional debt or preferred securities unless the Company’s asset coverage meets the threshold specified in the 1940 Act after such borrowing, (ii) an inability to declare any dividend or distribution (except a dividend payable in our stock) on a class of our capital stock or to purchase shares of our capital stock unless the Company’s asset coverage meets the threshold specified in the 1940 Act at the time of (and giving effect to) such declaration or purchase, and (iii) if, at any time, we are not subject to the reporting requirements of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), we will provide the holders of the 5.00% 2026 Notes and the trustee with audited annual consolidated financial statements and unaudited interim consolidated financial statements.
35

Table of Contents
The 5.00% 2026 Notes are recorded at the aggregate principal amount, less underwriting discounts, commissions, and offering costs, on our accompanying Consolidated Statements of Assets and Liabilities. Total underwriting discounts, commissions, and offering costs related to this offering were $4.1 million, which have been recorded as discounts to the aggregate principal amount on our accompanying Consolidated Statements of Assets and Liabilities and are being amortized over the period ending May 1, 2026, the maturity date.
4.875% Notes due 2028
In August 2021, we completed a public offering of 4.875% Notes due 2028 with an aggregate principal amount of $134.6 million (the “4.875% 2028 Notes”), which resulted in net proceeds of approximately $131.3 million after deducting underwriting discounts, commissions and offering costs borne by us. The 4.875% 2028 Notes are traded under the ticker symbol “GAINZ” on Nasdaq. The 4.875% 2028 Notes will mature on November 1, 2028 and may be redeemed in whole or in part at any time or from time to time at the Company’s option. The 4.875% 2028 Notes bear interest at a rate of 4.875% per year, which is payable quarterly in arrears.
The indenture relating to the 4.875% 2028 Notes contains certain covenants, including (i) an inability to incur additional debt or issue additional debt or preferred securities unless the Company’s asset coverage meets the threshold specified in the 1940 Act after such borrowing, (ii) an inability to declare any dividend or distribution (except a dividend payable in our stock) on a class of our capital stock or to purchase shares of our capital stock unless the Company’s asset coverage meets the threshold specified in the 1940 Act at the time of (and giving effect to) such declaration or purchase, and (iii) if, at any time, we are not subject to the reporting requirements of the Exchange Act, we will provide the holders of the 4.875% 2028 Notes and the trustee with audited annual consolidated financial statements and unaudited interim consolidated financial statements.
The 4.875% 2028 Notes are recorded at the aggregate principal amount, less underwriting discounts, commissions, and offering costs, on our accompanying Consolidated Statements of Assets and Liabilities. Total underwriting discounts, commissions, and offering costs related to this offering were $3.3 million, which have been recorded as discounts to the aggregate principal amount on our accompanying Consolidated Statements of Assets and Liabilities and are being amortized over the period ending November 1, 2028, the maturity date.
8.00% Notes due 2028
In May 2023, we completed a public offering of 8.00% Notes due 2028 with an aggregate principal amount of $74.8 million (the “8.00% 2028 Notes”), which resulted in net proceeds of approximately $72.3 million after deducting underwriting discounts, commissions and offering costs borne by us. The 8.00% 2028 Notes are traded under the ticker symbol “GAINL” on Nasdaq. The 8.00% 2028 Notes will mature on August 1, 2028 and may be redeemed in whole or in part at any time or from time to time at the Company’s option. The 8.00% 2028 Notes bear interest at a rate of 8.00% per year, which is payable quarterly in arrears.
The indenture relating to the 8.00% 2028 Notes contains certain covenants, including (i) an inability to incur additional debt or issue additional debt or preferred securities unless the Company’s asset coverage meets the threshold specified in the 1940 Act after such borrowing, (ii) an inability to declare any dividend or distribution (except a dividend payable in our stock) on a class of our capital stock or to purchase shares of our capital stock unless the Company’s asset coverage meets the threshold specified in the 1940 Act at the time of (and giving effect to) such declaration or purchase, and (iii) if, at any time, we are not subject to the reporting requirements of the Exchange Act, we will provide the holders of the 8.00% 2028 Notes and the trustee with audited annual consolidated financial statements and unaudited interim consolidated financial statements.
The 8.00% 2028 Notes are recorded at the aggregate principal amount, less underwriting discounts, commissions, and offering costs, on our accompanying Consolidated Statements of Assets and Liabilities. Total underwriting discounts, commissions, and offering costs related to this offering were $2.5 million, which have been recorded as discounts to the aggregate principal amount on our accompanying Consolidated Statements of Assets and Liabilities and are being amortized over the period ending August 1, 2028, the maturity date.
7.875% Notes due 2030
In December 2024, we completed a public offering of 7.875% Notes due 2030 with an aggregate principal amount of $126.5 million (the "7.875% 2030 Notes"), which resulted in net proceeds of approximately $122.4 million after deducting
36

Table of Contents
underwriting discounts, commissions and offering costs borne by us. The 7.875% 2030 Notes are traded under the ticker symbol “GAINI” on Nasdaq. The 7.875% 2030 Notes will mature on February 1, 2030 and may be redeemed in whole or in part at any time or from time to time at the Company’s option on or after February 1, 2027. The 7.875% 2030 Notes bear interest at a rate of 7.875% per year, payable quarterly in arrears.
The indenture relating to the 7.875% 2030 Notes contains certain covenants, including (i) an inability to incur additional debt or issue additional debt or preferred securities unless the Company’s asset coverage meets the threshold specified in the 1940 Act after such borrowing, (ii) an inability to declare any dividend or distribution (except a dividend payable in our stock) on a class of our capital stock or to purchase shares of our capital stock unless the Company’s asset coverage meets the threshold specified in the 1940 Act at the time of (and giving effect to) such declaration or purchase, and (iii) if, at any time, we are not subject to the reporting requirements of the Exchange Act, we will provide the holders of the 7.875% 2030 Notes and the trustee with audited annual consolidated financial statements and unaudited interim consolidated financial statements.
The 7.875% 2030 Notes are recorded at the aggregate principal amount, less underwriting discounts, commissions, and offering costs, on our accompanying Consolidated Statements of Assets and Liabilities. Total underwriting discounts, commissions, and offering costs related to this offering were $4.1 million, which have been recorded as discounts to the aggregate principal amount on our accompanying Consolidated Statements of Assets and Liabilities and are being amortized over the period ending February 1, 2030, the maturity date.
The following tables summarize our 5.00% 2026 Notes, 4.875% 2028 Notes, 8.00% 2028 Notes and 7.875% 2030 Notes as of September 30, 2025 and March 31, 2025:

As of September 30, 2025: |  |  |  |  |  |  |  |  |  |  |  |
Description |  | Ticker Symbol |  | Date Issued |  | Maturity Date(A) |  | Interest Rate |  | Notes Outstanding |  | Principal Amount per Note |  | Aggregate Principal Amount
5.00% 2026 Notes |  | GAINN |  | March 2, 2021 |  | May 1, 2026 |  | 5.00% |  | 5,117,500 |  | $ | 25.00 |  |  | $ | 127,938 |
4.875% 2028 Notes |  | GAINZ |  | August 18, 2021 |  | November 1, 2028 |  | 4.875% |  | 5,382,000 |  | $ | 25.00 |  |  | 134,550 |
8.00% 2028 Notes |  | GAINL |  | May 31, 2023 |  | August 1, 2028 |  | 8.00% |  | 2,990,000 |  | $ | 25.00 |  |  | 74,750 |
7.875% 2030 Notes |  | GAINI |  | December 17, 2024 |  | February 1, 2030 |  | 7.875% |  | 5,060,000 |  | $ | 25.00 |  |  | 126,500 |
Notes payable, gross(B) |  | 18,549,500 |  |  |  | 463,738 |
Less: Unamortized Discounts |  |  |  |  |  | (6,760) |
Notes payable, net(C) |  |  |  |  |  | $ | 456,978 |

As of March 31, 2025: |  |  |  |  |  |  |  |  |  |  |  |
Description |  | Ticker Symbol |  | Date Issued |  | Maturity Date(A) |  | Interest Rate |  | Notes Outstanding |  | Principal Amount per Note |  | Aggregate Principal Amount
5.00% 2026 Notes |  | GAINN |  | March 2, 2021 |  | May 1, 2026 |  | 5.00% |  | 5,117,500 |  | $ | 25.00 |  |  | $ | 127,938 |
4.875% 2028 Notes |  | GAINZ |  | August 18, 2021 |  | November 1, 2028 |  | 4.875% |  | 5,382,000 |  | $ | 25.00 |  |  | 134,550 |
8.00% 2028 Notes |  | GAINL |  | May 31, 2023 |  | August 1, 2028 |  | 8.00% |  | 2,990,000 |  | $ | 25.00 |  |  | 74,750 |
7.875% 2030 Notes |  | GAINI |  | December 17, 2024 |  | February 1, 2030 |  | 7.875% |  | 5,060,000 |  | $ | 25.00 |  |  | 126,500 |
Notes payable, gross(B) |  | 18,549,500 |  |  |  | 463,738 |
Less: Unamortized Discounts |  |  |  |  |  | (8,029) |
Notes payable, net(C) |  |  |  |  |  | $ | 455,709 |

(A)The 5.00% 2026 Notes, the 4.875% 2028 Notes and the 8.00% 2028 Notes can be redeemed at our option at any time. The 7.875% 2030 Notes can be redeemed at our option at any time on or after February 1, 2027.
(B)As of September 30, 2025 and March 31, 2025, asset coverage on our senior securities representing indebtedness, calculated pursuant to Sections 18 and 61 of the 1940 Act, was 193.2% and 204.4%, respectively.
(C)Reflected as a line item on our accompanying Consolidated Statements of Assets and Liabilities.
The fair value, based on the last reported closing prices, of the 5.00% 2026 Notes, 4.875% 2028 Notes, 8.00% 2028 Notes and 7.875% 2030 Notes as of September 30, 2025 was $128.7 million, $127.6 million, $76.7 million and $129.2 million, respectively. The fair value, based on the last reported closing prices, of the 5.00% 2026 Notes, 4.875% 2028 Notes, 8.00% 2028 Notes and 7.875% 2030 Notes as of March 31, 2025 was $127.5 million, $125.0 million, $77.5 million and $128.5
37

Table of Contents
million, respectively. We consider the closing prices of the 5.00% 2026 Notes, 4.875% 2028 Notes, 8.00% 2028 Notes and 7.875% 2030 Notes to be Level 1 inputs within the ASC 820 hierarchy.
NOTE 6. REGISTRATION STATEMENT AND COMMON EQUITY OFFERINGS
Registration Statement
On February 28, 2024, we filed a registration statement on Form N-2 (File No. 333-277452), which the SEC declared effective on April 18, 2024. The registration statement permits us to issue, through one or more transactions, up to an aggregate of $450.0 million in securities, consisting of common stock, preferred stock, subscription rights, debt securities, and warrants to purchase common stock, preferred stock, or debt securities, including through concurrent, separate offerings of such securities. As of September 30, 2025, we have the ability to issue up to an additional $282.6 million of the securities registered under the registration statement.
Common Equity Offerings
In May 2024, we entered into equity distribution agreements with Oppenheimer & Co., B. Riley Securities, Inc. and Virtu Americas LLC (collectively, the "Sales Agents"), under which we have the ability to issue and sell shares of our common stock, from time to time, through the Sales Agents, having an aggregate offering price of up to $75.0 million in what is commonly referred to as an “at-the-market” program (the “2024 Common Stock ATM Program”). In June 2025, we entered into an equity distribution agreement with M&T Securities, Inc. and entered into amendments to the agreements with Oppenheimer & Co. Inc., B. Riley Securities, Inc. and Virtu Americas LLC to add M&T Securities, Inc. as a Sales Agent for the 2024 Common Stock ATM Program. As of September 30, 2025, we had remaining capacity to sell up to an additional $34.1 million of common stock under the 2024 Common Stock ATM Program.
In August 2022, we entered into equity distribution agreements with Oppenheimer & Co. and Virtu Americas LLC (each a “2022 Sales Agent”), under which we had the ability to issue and sell shares of our common stock, from time to time, through the 2022 Sales Agents, up to an aggregate offering price of $50.0 million in what is commonly referred to as an “at-the-market” program (“2022 Common Stock ATM Program”). In August 2023, we entered into an equity distribution agreement with B. Riley Securities, Inc. and entered into amendments to the agreements with Oppenheimer & Co. Inc. and Virtu Americas LLC to add B. Riley Securities, Inc. as a 2022 Sales Agent for the 2022 Common Stock ATM Program. We did not sell any shares under the 2022 Common Stock ATM Program, which terminated in connection with our entry into the 2024 Common Stock ATM Program on May 14, 2024, during the six months ended September 30, 2024.
During the three months ended September 30, 2025, we sold 2,238,361 shares of our common stock under the 2024 Common Stock ATM Program, with a weighted-average gross price of $14.10 per share and a weighted-average net price of $13.90 per share after deducting commissions and offering costs borne by us, raising approximately $31.6 million and $31.1 million of gross and net proceeds, respectively. These sales were above our then current NAV per share.
During the six months ended September 30, 2025, we sold 2,753,656 shares of our common stock under the 2024 Common Stock ATM Program, with a weighted-average gross price of $14.12 per share and a weighted-average net price of $13.93 per share after deducting commissions and offering costs borne by us, raising approximately $38.9 million and $38.4 million of gross and net proceeds, respectively. These sales were above our then current NAV per share.
During the three and six months ended September 30, 2024, we did not sell any shares under the 2024 Common Stock ATM Program.
38

Table of Contents
NOTE 7. NET INCREASE (DECREASE) IN NET ASSETS RESULTING FROM OPERATIONS PER WEIGHTED-AVERAGE COMMON SHARE
The following table sets forth the computation of basic and diluted net increase in net assets resulting from operations per weighted-average common share for the three and six months ended September 30, 2025 and 2024:

| Three Months Ended September 30, |  | Six Months Ended September 30,
| 2025 |  | 2024 |  | 2025 |  | 2024
Numerator: net increase in net assets resulting from operations | $ | 28,709 |  |  | $ | 15,482 |  |  | $ | 36,481 |  |  | $ | 8,956 |
Denominator: basic and diluted weighted-average common shares | 38,445,643 |  |  | 36,688,667 |  |  | 37,681,491 |  |  | 36,688,667 |
Basic and diluted net increase in net assets resulting from operations per weighted-average common share | $ | 0.75 |  |  | $ | 0.42 |  |  | $ | 0.97 |  |  | $ | 0.24 |

NOTE 8. DISTRIBUTIONS TO COMMON STOCKHOLDERS
To qualify to be taxed as a RIC under Subchapter M of the Code, we must generally distribute to our stockholders, for each taxable year, at least 90% of our taxable ordinary income plus the excess of our net short-term capital gains over net long-term capital losses (“Investment Company Taxable Income”). The amount to be paid out as distributions to our stockholders is determined by our Board of Directors and is based upon management’s estimate of Investment Company Taxable Income and net long-term capital gains, as well as amounts to be distributed in accordance with Section 855(a) of the Code. Based on that estimate, our Board of Directors declares monthly distributions, and supplemental distributions, as appropriate, to stockholders each quarter and deemed distributions of long-term capital gains annually as of the end of the fiscal year, as applicable.
The U.S. federal income tax characteristics of cash distributions paid to our common stockholders generally are reported to stockholders on IRS Form 1099 after the end of each calendar year. Estimates of tax characterization made on a quarterly basis may not be representative of the actual tax characterization of cash distributions for the full year. Estimates made on a quarterly basis are updated as of each interim reporting date. If we determined the tax characterization of cash distributions paid to common stockholders during the current calendar year as of September 30, 2025, 51.3% would be from ordinary income and 48.7% would be from capital gains. The tax characterization of cash distributions paid to common stockholders during the calendar year ended December 31, 2024 was 52.9% from ordinary income and 47.1% from capital gains.
We paid the following cash distributions to our common stockholders for the six months ended September 30, 2025 and 2024:
For the Six Months Ended September 30, 2025:

Declaration Date |  | Record Date |  | Payment Date |  | Distribution per Common Share |
April 8, 2025 |  | April 21, 2025 |  | April 30, 2025 |  | $ | 0.08 |  |
April 8, 2025 |  | May 21, 2025 |  | May 30, 2025 |  | 0.08 |  |
April 8, 2025 |  | June 4, 2025 |  | June 13, 2025 |  | 0.54 |  | (A)
April 8, 2025 |  | June 20, 2025 |  | June 30, 2025 |  | 0.08 |  |
July 10, 2025 |  | July 21, 2025 |  | July 31, 2025 |  | 0.08 |  |
July 10, 2025 |  | August 20, 2025 |  | August 29, 2025 |  | 0.08 |  |
July 10, 2025 |  | September 22, 2025 |  | September 30, 2025 |  | 0.08 |  |
|  | Six Months Ended September 30, 2025 |  | $ | 1.02 |  |

39

Table of Contents
For the Six Months Ended September 30, 2024:

Declaration Date |  | Record Date |  | Payment Date |  | Distribution per Common Share |
April 9, 2024 |  | April 19, 2024 |  | April 30, 2024 |  | $ | 0.08 |  |
April 9, 2024 |  | May 17, 2024 |  | May 31, 2024 |  | 0.08 |  |
April 9, 2024 |  | June 19, 2024 |  | June 28, 2024 |  | 0.08 |  |
July 9, 2024 |  | July 22, 2024 |  | July 31, 2024 |  | 0.08 |  |
July 9, 2024 |  | August 21, 2024 |  | August 30, 2024 |  | 0.08 |  |
July 9, 2024 |  | September 20, 2024 |  | September 30, 2024 |  | 0.08 |  |
|  | Six Months Ended September 30, 2024 |  | $ | 0.48 |  |

(A)Represents a supplemental distribution to common stockholders.
Aggregate cash distributions to our common stockholders declared and paid were $38.1 million for the six months ended September 30, 2025. Aggregate cash distributions to our common stockholders declared was $43.3 million, of which $17.6 million was paid during the six months ended September 30, 2024, and $25.7 million was paid in October 2024.
For the fiscal year ended March 31, 2025, Investment Company Taxable Income exceeded distributions declared and paid, and, in accordance with Section 855(a) of the Code, we elected to treat $36.7 million of the first distributions paid subsequent to fiscal year-end, as having been paid in the prior year. In addition, for the fiscal year ended March 31, 2025, net capital gains exceeded distributions declared and paid, and, in accordance with Section 855(a) of the Code, we elected to treat $18.7 million of the first distributions paid subsequent to fiscal year-end as having been paid in the prior year.
For the three months ended September 30, 2025, we recorded $2.2 thousand of net adjustments for estimated permanent book-tax differences to reflect tax character, which increased Accumulated net realized (loss) gain in excess of distributions and decreased Overdistributed net investment income and Capital in excess of par value on our accompanying Consolidated Statements of Assets and Liabilities. For the three months ended September 30, 2024, we recorded $0.6 million of net adjustments for estimated permanent book-tax differences to reflect tax character, which decreased Capital in excess of par value and increased Overdistributed net investment income on our accompanying Consolidated Statements of Assets and Liabilities.
For the six months ended September 30, 2025, we recorded $0.3 million of net adjustments for estimated permanent book-tax differences to reflect tax character, which increased Accumulated net realized (loss) gain in excess of distributions and decreased Overdistributed net investment income and Capital in excess of par value on our accompanying Consolidated Statements of Assets and Liabilities. For the six months ended September 30, 2024, we recorded $0.8 million of net adjustments for estimated permanent book-tax differences to reflect tax character, which increased Overdistributed net investment income and decreased Accumulated net realized gain in excess of distributions and Capital in excess of par value on our accompanying Consolidated Statements of Assets and Liabilities.
We may distribute our net long-term capital gains, if any, in cash or elect to retain some or all of such gains, pay taxes at the U.S. federal corporate-level income tax rate on the amount retained, and designate the retained amount as a “deemed distribution.” If we elect to retain net long-term capital gains and deem them distributed, each U.S. common stockholder will be treated as if they received a distribution of their pro-rata share of the retained net long-term capital gain and the U.S. federal income tax paid. As a result, each U.S. common stockholder will (i) be required to report their pro rata share of the retained gain on their tax return as long-term capital gain, (ii) receive a refundable tax credit for their pro-rata share of federal income tax paid by us on the retained gain, and (iii) increase the tax basis of their shares of common stock by an amount equal to the deemed distribution less the tax credit. To use the deemed distribution approach, we must provide written notice to our common stockholders prior to the expiration of 60 days after the close of the relevant taxable year. For the year ended March 31, 2025, we did not elect to retain long-term capital gains and to treat them as deemed distributions to common stockholders.
40

Table of Contents
NOTE 9. COMMITMENTS AND CONTINGENCIES
Legal Proceedings
We are party to certain legal proceedings incidental to the normal course of our business. We are required to establish reserves for litigation matters where those matters present loss contingencies that are both probable and estimable. When loss contingencies are not both probable and estimable, we do not establish reserves. Based on current knowledge, we do not believe that loss contingencies, if any, arising from pending investigations, litigation or regulatory matters will have a material adverse effect on our financial condition, results of operation or cash flows. Additionally, based on our current knowledge, we do not believe such loss contingencies are both probable and estimable and, therefore, as of September 30, 2025 and March 31, 2025, we had no established reserves for such loss contingencies.
Escrow Holdbacks
From time to time, we enter into arrangements relating to exits of certain investments whereby specific amounts of the proceeds are held in escrow to be used to satisfy potential obligations, as stipulated in the sales agreements. We record escrow amounts in Restricted cash and cash equivalents and Other liabilities, if received in cash but subject to potential obligations or other contractual restrictions, or as escrow receivables in Other assets, net, if not yet received in cash, on our accompanying Consolidated Statements of Assets and Liabilities. We establish reserves and holdbacks against escrow amounts if we determine that it is probable and estimable that a portion of the escrow amounts will not ultimately be released or received at the end of the escrow period. Reserves and holdbacks against escrow amounts were $1.0 million as of September 30, 2025 and March 31, 2025.
Financial Commitments and Obligations
We may have line of credit commitments to certain of our portfolio companies that have not been fully drawn. Since these line of credit commitments have expiration dates and we expect many will never be fully drawn, the total line of credit commitment amounts do not necessarily represent future cash requirements. We estimate the fair value of the combined unused line of credit commitments as of September 30, 2025 and March 31, 2025 to be insignificant.
The following table summarizes the principal balances of unused line of credit as of September 30, 2025 and March 31, 2025, which are not reflected as liabilities in the accompanying Consolidated Statements of Assets and Liabilities:

| September 30, 2025 |  | March 31, 2025
Unused line of credit commitments | $ | 7,160 |  |  | $ | 3,440 |
Total | $ | 7,160 |  |  | $ | 3,440 |

41

Table of Contents
NOTE 10. FINANCIAL HIGHLIGHTS

|  |  | Six Months Ended September 30,
|  |  |  |  | 2025 |  | 2024
Per Common Share Data: |  |  |  |  |  |  |
Net asset value at beginning of period(A) |  |  |  |  | $ | 13.55 |  |  | $ | 13.43 |
Income (loss) from investment operations(B) |  |  |  |  |  |  |
Net investment income |  |  |  |  | 0.35 |  |  | 0.54 |
Net realized (loss) gain |  |  |  |  | (0.79) |  |  | 1.15 |
Net unrealized appreciation (depreciation) |  |  |  |  | 1.41 |  |  | (1.45) |
Total from investment operations |  |  |  |  | 0.97 |  |  | 0.24 |
Effect of equity capital activity(B) |  |  |  |  |  |  |
Cash distributions to common stockholders from net investment income(C) |  |  |  |  | (0.51) |  |  | (0.48) |
Cash distributions to common stockholders from net realized gains(C) |  |  |  |  | (0.51) |  |  | (0.70) |
Discounts, commissions and offering costs |  |  |  |  | (0.01) |  |  | — |
Net accretive effect of equity offering(D) |  |  |  |  | 0.07 |  |  | — |
Total from equity capital activity |  |  |  |  | (0.96) |  |  | (1.18) |
Other, net(B)(E) |  |  |  |  | (0.03) |  |  | — |
Net asset value at end of period(A) |  |  |  |  | $ | 13.53 |  |  | $ | 12.49 |
Per common share market value at beginning of period |  |  |  |  | $ | 13.36 |  |  | $ | 14.23 |
Per common share market value at end of period |  |  |  |  | $ | 13.82 |  |  | $ | 14.45 |
Total investment return(F) |  |  |  |  | 11.09 | % |  | 5.10 | %
Common stock outstanding at end of period(A) |  |  |  |  | 39,591,037 |  | 36,688,667
Weighted-average shares of common stock outstanding |  |  |  |  | 37,681,491 |  | 36,688,667
Statement of Assets and Liabilities Data: |  |  |  |  |  |  |
Net assets at end of period |  |  |  |  | $ | 535,843 |  |  | $ | 458,375 |
Average net assets(G) |  |  |  |  | $ | 502,984 |  |  | $ | 479,416 |
Senior Securities Data: |  |  |  |  |  |  |
Total borrowings, at cost |  |  |  |  | $ | 561,438 |  |  | $ | 346,138 |
Ratios/Supplemental Data: |  |  |  |  |  |  |
Ratio of net expenses to average net assets – annualized(H) |  |  |  |  | 14.10 | % |  | 10.45 | %
Ratio of net investment income to average net assets – annualized(I) |  |  |  |  | 5.32 | % |  | 8.22 | %

(A)B ased on actual shares of common stock outstanding at the beginning or end of the corresponding period, as appropriate.
(B)Based on weighted-average basic common share data for the corresponding period.
(C)The tax character of distributions is determined based on taxable income calculated in accordance with income tax regulations, which may differ from amounts determined under GAAP. For further information on the estimated character of our distributions to common stockholders, including changes in estimates, as applicable, refer to Note 8 — Distributions to Common Stockholders.
(D)During the six months ended September 30, 2025, the accretive effect is a result of issuing common stock at a price above the then current NAV per share.
(E)Represents the impact of the different share amounts (weighted-average basic common shares outstanding for the corresponding period and actual common shares outstanding at the end of the period) in the Per Common Share Data calculations and rounding impacts.
(F)Total investment return equals the change in the market value of our common stock from the beginning of the period, taking into account dividends reinvested in accordance with the terms of our dividend reinvestment plan. Total return does not take into account distributions that may be characterized as a return of capital. For further information on the estimated character of our distributions to common stockholders, including changes in estimates, as applicable, refer to Note 8 — Distributions to Common Stockholders.
(G)Calculated using the average balance of net assets at the end of each month of the reporting period.
(H)Ratio of net expenses to average net assets is computed using total expenses, net of any non-contractual, unconditional, and irrevocable credits of fees from the Adviser. Had we not received any non-contractual, unconditional, and irrevocable credits of fees from the Adviser, the ratio of expenses to average net assets - annualized would have been 17.53% and 12.83% for the six months ended September 30, 2025 and 2024, respectively.
42

Table of Contents
(I)Had we not received any non-contractual, unconditional, and irrevocable credits of fees from the Adviser, the ratio of net investment income to average net assets - annualized would have been 1.88% and 5.84% for the six months ended September 30, 2025 and 2024, respectively.
NOTE 11. UNCONSOLIDATED SIGNIFICANT SUBSIDIARIES
In accordance with the SEC’s Regulation S-X, we do not consolidate portfolio company investments. Further, in accordance with ASC 946, we are precluded from consolidating any entity other than another investment company, except that ASC 946 provides for the consolidation of a controlled operating company that provides substantially all of its services to the investment company or its consolidated subsidiaries. We did not have any unconsolidated subsidiaries that met any of the significance conditions under Rule 1-02(w)(2) of the SEC’s Regulation S-X as of or during the six months ended September 30, 2025 and 2024.
NOTE 12. SUBSEQUENT EVENTS
Distributions and Dividends
•In October 2025, our Board of Directors declared the following monthly distributions to common stockholders:

Record Date |  | Payment Date |  | Distribution per Common Share |  |
October 24, 2025 |  | October 31, 2025 |  | $ | 0.08 |  |  |
November 17, 2025 |  | November 26, 2025 |  | 0.08 |  |  |
December 22, 2025 |  | December 31, 2025 |  | 0.08 |  |  |
|  | Total for the Quarter: |  | $ | 0.24 |  |  |

ATM Activity
Subsequent to September 30, 2025, we sold 55,414 shares of our common stock under our 2024 Common Stock ATM program at a weighted-average gross price of $14.02 per share and raised approximately $0.8 million in net proceeds. All of these sales were above our then-current NAV per share.
43

Table of Contents
ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
All statements contained herein, other than historical facts, may constitute “forward-looking statements.” These statements may relate to, among other things, our future operating results, our business prospects and the prospects of our portfolio companies, actual and potential conflicts of interest with Gladstone Management Corporation (the “Adviser”), our investment adviser, and its affiliates, the use of borrowed money to finance our investments, the adequacy of our financing sources and working capital, and our ability to co-invest. In some cases, you can identify forward-looking statements by terminology such as “estimate,” “may,” “might,” “believe,” “will,” “provided,” “anticipate,” “future,” “could,” “growth,” “plan,” “project,” “intend,” “expect,” “should,” “would,” “if,” “seek,” “possible,” “potential,” “likely” or the negative or variations of such terms or comparable terminology. These forward-looking statements involve known and unknown risks, uncertainties and other factors that may cause our actual results, levels of activity, performance or achievements to be materially different from any future results, levels of activity, performance or achievements expressed or implied by such forward-looking statements. Such factors include: (1) changes in the economy and the capital markets, including stock price volatility, inflation, elevated interest rates, tariffs and trade wars and risks of recession; (2) risks associated with negotiation and consummation of pending and future transactions; (3) the loss of one or more of our executive officers, in particular David Gladstone or David D ullum; (4) changes in our investment objectives and strategy; (5) availability, terms (including the possibility of interest rate volatility) and deployment of capital; (6) changes in our industry, interest rates, exchange rates, or the general economy, including inflation; (7) our business prospects and the prospects of our portfolio companies; (8) the degree and nature of our competition; (9) changes in governmental regulation, tax rates and similar matters; (10) our ability to exit investments in a timely manner; (11) our ability to maintain our qualification as a regulated investment company (“RIC”) and as a business development company (“BDC”); and (12) those factors described in Item 1A. “Risk Factors” herein and the “Risk Factors” sections of our Annual Report on Form 10-K for the fiscal year ended March 31, 2025, filed with the U.S. Securities and Exchange Commission (“SEC”) on May 13, 2025 (the “Annual Report”). We caution readers not to place undue reliance on any such forward-looking statements, which speak only as of the date made. Actual results could differ materially from those anticipated in our forward-looking statements and future results could differ materially from our historical performance. We have based forward-looking statements on information available to us on the date of this Quarterly Report on Form 10-Q (the “Quarterly Report”). Except as required by the federal securities laws, we undertake no obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, after the date of this Quarterly Report. Although we undertake no obligation to revise or update any forward-looking statements, whether as a result of new information, future events or otherwise, you are advised to consult any additional disclosures that we may make directly to you or through reports that we have filed or in the future may file with the SEC, including subsequent annual reports on Form 10-K, quarterly reports on Form 10-Q and current reports on Form 8-K. The forward-looking statements contained in this Quarterly Report are excluded from the safe harbor protection provided by the Private Securities Litigation Reform Act of 1995 and Section 27A of the Securities Act of 1933, as amended.
In this Quarterly Report, the terms the “Company,” “we,” “us,” and “our” refer to Gladstone Investment Corporation and its wholly-owned subsidiaries unless the context otherwise indicates. Dollar amounts, except per share amounts, are in thousands, unless otherwise indicated.
The following analysis of our financial condition and results of operations should be read in conjunction with our accompanying Consolidated Financial Statements and the notes thereto contained elsewhere in this Quarterly Report and in our Annual Report. Historical financial condition and results of operations and percentage relationships among any amounts in the financial statements are not necessarily indicative of financial condition, results of operations or percentage relationships for any future periods.
44

Table of Contents
OVERVIEW
General
We were incorporated under the General Corporation Law of the State of Delaware on February 18, 2005. We operate as an externally managed, closed-end, non-diversified management investment company and have elected to be treated as a BDC under the Investment Company Act of 1940, as amended (the “1940 Act”). For U.S. federal income tax purposes, we have elected to be treated as a RIC under Subchapter M of the Internal Revenue Code of 1986, as amended (the “Code”). To continue to qualify as a RIC for U.S. federal income tax purposes and obtain favorable RIC tax treatment, we must meet certain requirements, including certain minimum distribution requirements.
We were established for the purpose of investing in debt and equity securities of established private businesses operating in the United States (“U.S.”). Our investment objectives are to: (i) achieve and grow current income by investing in debt securities of established businesses that we believe will provide stable earnings and cash flow to pay expenses, make principal and interest payments on our outstanding indebtedness, and make distributions to our stockholders that grow over time; and (ii) provide our stockholders with long-term capital appreciation in the value of our assets by investing in equity securities of established businesses, generally in combination with the aforementioned debt securities, that we believe can grow over time to permit us to sell our equity investments for capital gains. To achieve our objectives, our investment strategy is to invest in several categories of debt and equity securities, with individual investments generally totaling up to $75 million, although investment size may vary depending upon our total assets or available capital at the time of investment. We expect that our investment portfolio over time will consist of approximately 75% in debt investments and 25% in equity investments, at cost. As of September 30, 2025, our investment portfolio was comprised of 71.1% in debt investments and 28.9% in equity investments, at cost.
We focus on investing in lower middle market private businesses (which we generally define as companies with annual earnings before interest, taxes, depreciation and amortization (“EBITDA”) of $4 million to $15 million) (“Lower Middle Market”) in the U.S. that meet certain criteria, including: the sustainability of the business’ free cash flow and its ability to grow it over time, adequate assets for loan collateral, experienced management teams with a significant ownership interest in the portfolio company, reasonable capitalization of the portfolio company, including an ample equity contribution or cushion based on prevailing enterprise valuation multiples, and the potential to realize appreciation and gain liquidity in our equity position, if any. We anticipate that liquidity in our equity position will be achieved through a merger, acquisition or recapitalization of the portfolio company, a public offering of the portfolio company’s stock, or, to a lesser extent, by exercising our right to require the portfolio company to repurchase our warrants, though there can be no assurance that we will always have these rights. We invest in portfolio companies that seek funds for management buyouts and/or growth capital to finance acquisitions, recapitalize or, to a lesser extent, refinance their existing debt facilities. We seek to avoid investing in high-risk, early-stage enterprises. Our targeted portfolio companies are generally considered too small for the larger capital marketplace.
We invest by ourselves or jointly with other funds and/or management of the portfolio company, depending on the opportunity. In July 2012, the SEC granted us exemptive orders (collectively, the “Co-Investment Order”) that expanded our ability to co-invest, under certain circumstances, with certain of our affiliates, including Gladstone Capital Corporation and Gladstone Alternative Income Fund ("Gladstone Alternative") and any future BDC or registered closed-end management investment company that is advised (or sub-advised if it controls the fund) by the Adviser, or any combination of the foregoing, subject to the conditions in the Co-Investment Order. In September 2025, the SEC granted us a new Co-Investment Order that contains a more flexible requirement that allocations be “fair and equitable” to us and that the Adviser consider the interests of us in allocations and which minimizes certain board approval requirements from the prior Co-Investment Order. We believe the Co-Investment Order has enhanced and will continue to enhance our ability to further our investment objectives and strategies. If we are participating in an investment with one or more co-investors, whether or not an affiliate of ours, our investment is likely to be smaller than if we were investing alone.
We are externally managed by the Adviser, an investment adviser registered with the SEC and an affiliate of ours, pursuant to an investment advisory and management agreement (the “Advisory Agreement”). The Adviser manages our investment activities. We have also entered into an administration agreement with Gladstone Administration, LLC, an affiliate of ours and the Adviser, whereby we pay separately for administrative services.
Our shares of common stock, our 5.00% Notes due 2026 (“5.00% 2026 Notes”), our 4.875% Notes due 2028 ("4.875% 2028 Notes"), our 8.00% Notes due 2028 (“8.00% 2028 Notes”) and our 7.875% Notes due 2030 (“7.875% 2030 Notes”) are traded on the Nasdaq Global Select Market (“Nasdaq”) under the trading symbols “GAIN,” “GAINN,” “GAINZ,” “GAINL,” and “GAINI,” respectively.
45

Table of Contents
Business
Portfolio and Investment Activity
While the business environment remains competitive, we continue to see new investment opportunities consistent with our investment strategy of providing a combination of debt and equity in support of management and independent sponsor-led buyouts of Lower Middle Market companies in the U.S. During the six months ended September 30, 2025, we invested in three new portfolio companies. From our initial public offering in June 2005 through September 30, 2025, we have invested in 65 companies, excluding investments in syndicated loans, for a total of approximately $2.2 billion, before giving effect to principal repayments and divestitures.
The majority of the debt securities in our portfolio have a success fee component, which enhances the yield on our debt investments. Unlike paid-in-kind (“PIK”) income, we generally do not recognize success fees as income until payment has been received. Due to the contingent nature of success fees, there are no guarantees that we will be able to collect any or all of these success fees or know the timing of any such collections. As a result, as of September 30, 2025, we had unrecognized, contractual success fees of $59.3 million, or $1.50 per common share. Consistent with accounting principles generally accepted in the U.S. (“GAAP”), we have not recognized success fee receivables and related income in our accompanying Consolidated Financial Statements until earned.
From inception through September 30, 2025, we exited our investments in 33 portfolio companies that we acquired under our buyout strategy. In the aggregate, these sales have generated $353.4 million in net realized gains and $45.4 million in other income upon exit, for a total increase to our net assets of $398.8 million. We believe, in aggregate, these transactions were equity-oriented investment successes and exemplify our investment strategy of striving to achieve returns through current income on the debt portion of our investments and capital gains from the equity portion. The 33 liquidity events have offset any realized losses since inception, which were primarily incurred during the 2008-2009 recession in connection with the sale of performing syndicated loans at a realized loss to pay off a former lender. The successful exits, in part, enabled us to increase the monthly distribution by 100.0% from March 2011 through September 30, 2025, and allowed us to declare and pay 24 supplemental distributions to common stockholders through September 30, 2025.
Capital Raising
We have been able to meet our capital needs through extensions of and increases to the Fifth Amended and Restated Credit Agreement dated April 30, 2013, as amended from time to time (the “Credit Facility”), and by accessing the capital markets in the form of public offerings of unsecured notes, as well as common and preferred stock. We have successfully extended the Credit Facility’s revolving period multiple times, most recently to October 2026, and currently have a total commitment amount of $270.0 million (with a potential total commitment of $300.0 million through additional commitments from new or existing lenders). During the six months ended September 30, 2025, we sold 2,753,656 shares of our common stock under our "at-the-market" program (the "2024 Common Stock ATM Program") for gross proceeds of approximately $38.9 million. During the year ended March 31, 2025, we issued the 7.875% 2030 Notes for gross proceeds of $126.5 million and sold 148,714 shares of our common stock under our 2024 Common Stock ATM Program for gross proceeds of approximately $2.0 million. Refer to “Liquidity and Capital Resources — Revolving Line of Credit” for further discussion of the Credit Facility and to “Liquidity and Capital Resources — Equity — Common Stock” further discussion of our common stock.
Although we have been able to access the capital markets historically, market conditions may continue to affect the trading price of our common stock and thus our ability to finance new investments through the issuance of common equity. On September 30, 2025, the closing market price of our common stock was $13.82 per share, representing a 2.1% premium to our net asset value (“NAV”) of $13.53 per share as of September 30, 2025. When our common stock trades below NAV, our ability to issue additional equity is constrained by provisions of the 1940 Act, which generally prohibits the issuance and sale of our common stock at an issuance price below the then-current NAV per share without stockholder approval, other than through sales to our then-existing stockholders pursuant to a rights offering.
46

Table of Contents
Regulatory Compliance
Our ability to seek external debt financing, to the extent that it is available under current market conditions, is further subject to the asset coverage limitations of the 1940 Act, which require us to have asset coverage (as defined in Sections 18 and 61 of the 1940 Act) of at least 150% on each of our senior securities representing indebtedness and our senior securities that are stock.
On April 10, 2018, our Board of Directors, including a “required majority” (as such term is defined in Section 57(o) of the 1940 Act) thereof, approved the modified asset coverage requirements set forth in Section 61(a)(2) of the 1940 Act. As a result, our asset coverage requirements for senior securities changed from 200% to 150%, effective as of April 10, 2019, one year after the date of the Board of Directors’ approval.
As of September 30, 2025, our asset coverage ratio on our senior securities representing indebtedness was 193.2%.
Investment Highlights
Investment Activity
During the six months ended September 30, 2025, the following significant transactions occurred:
•In May 2025, we invested $49.5 million in a new portfolio company, Smart Chemical Solutions, LLC, ("Smart Chemical"), in the form of $35.7 million of secured first lien debt and $13.8 million of preferred equity. Smart Chemical, headquartered in Midland, Texas, is a provider of production chemicals for onshore oil and gas operators throughout the United States.
•In May 2025, we invested $12.8 million in a new portfolio company, Sun State Nursery and Landscaping, LLC, ("Sun State"), in the form of $9.8 million of secured first lien debt and $3.1 million of preferred equity. Sun State, headquartered in Jacksonville, Florida, is a commercial landscaping installation and maintenance provider in the Jacksonville area.
•In June 2025, we restructured our investment in PSI Molded Plastics, Inc. As a result of the restructuring, we converted debt with a cost basis of $10.6 million into preferred equity.
•In July 2025, we invested $67.6 million in a new portfolio company, Global GRAB Technologies, Inc. ("Global GRAB"), in the form of $46.5 million of secured first lien debt and $21.1 million of preferred equity. Global GRAB, headquartered in Franklin, Tennessee, is a provider of turnkey perimeter security and hostile vehicle mitigation systems, serving various government and commercial organizations.
•In September 2025, we entered into a new $20.0 million secured first lien term loan with J.R. Hobbs Co. – Atlanta, LLC ("J.R. Hobbs"), restructuring our previously outstanding first lien term loans and line of credit with an aggregate total cost basis of $49.9 million, which resulted in a realized loss of $29.9 million.
Distributions and Dividends
•In October 2025, our Board of Directors declared the following monthly cash distributions to common stockholders:

Record Date |  | Payment Date |  | Distribution per Common Share |
October 24, 2025 |  | October 31, 2025 |  | $ | 0.08 |  |
November 17, 2025 |  | November 26, 2025 |  | 0.08 |  |
December 22, 2025 |  | December 31, 2025 |  | 0.08 |  |
|  | Total for the Quarter: |  | $ | 0.24 |  |

47

Table of Contents
RESULTS OF OPERATIONS
Comparison of the Three Months Ended September 30, 2025 to the Three Months Ended September 30, 2024

| For the Three Months Ended September 30,
| 2025 |  | 2024 |  | Change |  | % Change
INVESTMENT INCOME |  |  |  |  |  |  |
Interest income | $ | 22,669 |  |  | $ | 20,996 |  |  | $ | 1,673 |  |  | 8.0 | %
Dividend and success fee income | 2,610 |  |  | 1,569 |  |  | 1,041 |  |  | 66.3 | %
Total investment income | 25,279 |  |  | 22,565 |  |  | 2,714 |  |  | 12.0 | %
EXPENSES |  |  |  |  |  |  |
Base management fee | 5,457 |  |  | 4,447 |  |  | 1,010 |  |  | 22.7 | %
Loan servicing fee | 2,932 |  |  | 2,194 |  |  | 738 |  |  | 33.6 | %
Incentive fee | 5,207 |  |  | 2,232 |  |  | 2,975 |  |  | 133.3 | %
Administration fee | 520 |  |  | 567 |  |  | (47) |  |  | (8.3) | %
Interest expense | 9,631 |  |  | 6,399 |  |  | 3,232 |  |  | 50.5 | %
Amortization of deferred financing costs and discounts | 910 |  |  | 629 |  |  | 281 |  |  | 44.7 | %
Other | 913 |  |  | 1,669 |  |  | (756) |  |  | (45.3) | %
Expenses before credits from Adviser | 25,570 |  |  | 18,137 |  |  | 7,433 |  |  | 41.0 | %
Credits to fees from Adviser | (4,570) |  |  | (2,863) |  |  | (1,707) |  |  | 59.6 | %
Total expenses, net of credits to fees | 21,000 |  |  | 15,274 |  |  | 5,726 |  |  | 37.5 | %
NET INVESTMENT INCOME | 4,279 |  |  | 7,291 |  |  | (3,012) |  |  | (41.3) | %
REALIZED AND UNREALIZED GAIN (LOSS) |  |  |  |  |  |  |
Net realized (loss) gain on investments | (29,938) |  |  | 42,303 |  |  | (72,241) |  |  | NM
Net unrealized appreciation (depreciation) | 54,368 |  |  | (34,112) |  |  | 88,480 |  |  | NM
Net realized and unrealized gain | 24,430 |  |  | 8,191 |  |  | 16,239 |  |  | NM
NET INCREASE IN NET ASSETS RESULTING FROM OPERATIONS | $ | 28,709 |  |  | $ | 15,482 |  |  | $ | 13,227 |  |  | 85.4 | %
WEIGHTED-AVERAGE SHARES OF COMMON STOCK OUTSTANDING |  |  |  |  |  |  |
Basic and diluted | 38,445,643 |  |  | 36,688,667 |  |  | 1,756,976 |  |  | 4.8 | %
BASIC AND DILUTED PER COMMON SHARE: |  |  |  |  |  |  |
Net investment income | $ | 0.11 |  |  | $ | 0.20 |  |  | $ | (0.09) |  |  | (45.0) | %
Net increase in net assets resulting from operations | $ | 0.75 |  |  | $ | 0.42 |  |  | $ | 0.33 |  |  | 78.6 | %

NM - Not meaningful
48

Table of Contents
Investment Income
Total investment income increased $2.7 million, or 12.0%, for the three months ended September 30, 2025, as compared to the prior year period, primarily due to an increase in interest income and dividend and success fee income.
Interest income from our investments in debt securities increased $1.7 million, or 8.0%, for the three months ended September 30, 2025, as compared to the prior year period. Generally, the level of interest income from investments is directly related to the weighted-average principal balance of our interest-bearing investment portfolio outstanding during the period, multiplied by the weighted-average yield.
The weighted-average principal balance of our interest-bearing investment portfolio during the three months ended September 30, 2025 was $668.9 million, compared to $572.8 million for the prior year period. This increase was primarily due to the origination of $222.9 million of new debt investments and $41.7 million of follow-on debt investments in existing portfolio companies, partially offset by $126.4 million of pay-offs, restructurings, or write-offs of debt investments and $3.8 million of existing loans placed on non-accrual status after June 30, 2024, and their respective impact on the weighted-average principal balance when considering the timing of new investments, pay-offs, restructurings, write-offs, and accrual status changes, as applicable. During the three months ended September 30, 2025, we collected $0.3 million in past due interest from J.R. Hobbs that was previously on non-accrual status. We had no collections of past due interest during the three months ended September 30, 2024.
The weighted-average yield on our interest-bearing investments, excluding cash and cash equivalents and receipts recorded as dividend and success fee income, was 13.4% for the three months ended September 30, 2025, compared to 14.5% for the prior year period. The weighted-average yield may vary from period to period, based on the current stated interest rate on interest-bearing investments, coupled with any collection of past due interest during the period.
As of September 30, 2025, our loans to B+T Group Acquisition, Inc. ("B+T"), Diligent Delivery Systems ("Diligent") and Edge Adhesives Holdings, Inc. ("Edge") were on non-accrual status, with an aggregate debt cost basis of $40.3 million. As of September 30, 2024, certain of our loans to B+T, Diligent, Edge and J.R. Hobbs were on non-accrual status, with an aggregate debt cost basis of $90.0 million.
As of September 30, 2025 and March 31, 2025, SFEG Holdings, Inc. ("SFEG") represented 11.5% and 10.8% of the total investment portfolio at fair value, respectively.
Dividend and success fee income for the three months ended September 30, 2025 increased $1.0 million, or 66.3%, from the prior year period. During the three months ended September 30, 2025, dividend and success fee income consisted of $2.6 million of dividend income. During the three months ended September 30, 2024, dividend and success fee income consisted of $1.4 million of dividend income and $0.2 million of success fee income.
Expenses
Total expenses, net of any non-contractual, unconditional, and irrevocable credits from the Adviser, increased $5.7 million, or 37.5%, during the three months ended September 30, 2025, as compared to the prior year period, primarily due to an increase in incentive fees, interest expense and base management fees, partially offset by an increase in fee credits from the Adviser.
In accordance with GAAP, during the three months ended September 30, 2025, we recorded a $4.9 million capital gains-based incentive fee compared to a $1.6 million capital gains-based incentive fee during the three months ended September 30, 2024. The capital gains-based incentive fee is a result of the net impact of net realized gains and net unrealized appreciation (depreciation) on investments during the respective periods.
49

Table of Contents
The base management fee, loan servicing fee, incentive fee, and their related non-contractual, unconditional, and irrevocable credits are computed quarterly, as described under “Transactions with the Adviser” in Note 4 — Related Party Transactions in the accompanying Notes to Consolidated Financial Statements and are summarized in the following table:

| Three Months Ended September 30,
| 2025 |  | 2024
Average total assets subject to base management fee(A)(B) | $ | 1,091,400 |  |  | $ | 889,400 |
Multiplied by prorated annual base management fee of 2.0% | 0.5 | % |  | 0.5 | %
Base management fee(C) | $ | 5,457 |  |  | $ | 4,447 |
Credits to fees from Adviser - other(C) | (1,638) |  |  | (669) |
Net base management fee | $ | 3,819 |  |  | $ | 3,778 |
Loan servicing fee(C) | $ | 2,932 |  |  | $ | 2,194 |
Credits to base management fee - loan servicing fee(C) | (2,932) |  |  | (2,194) |
Net loan servicing fee | $ | — |  |  | $ | — |
Incentive fee – income-based | $ | 310 |  |  | $ | 594 |
Incentive fee – capital gains-based(D) | 4,897 |  |  | 1,638 |
Total incentive fee(C) | $ | 5,207 |  |  | $ | 2,232 |
Credits to fees from Adviser - other(C) | — |  |  | — |
Net total incentive fee | $ | 5,207 |  |  | $ | 2,232 |

(A)Average total assets subject to the base management fee is defined in the Advisory Agreement as total assets, including investments made with proceeds of borrowings, less any uninvested cash or cash equivalents resulting from borrowings, valued at the end of the applicable quarters within the respective periods and adjusted appropriately for any share issuances or repurchases during the periods.
(B)Excludes our investment in Gladstone Alternative valued at the end of the applicable quarters within the respective periods.
(C)Reflected as a line item on our Consolidated Statements of Operations.
(D)The capital gains-based incentive fees are recorded in accordance with GAAP and do not necessarily reflect amounts contractually due under the terms of the Advisory Agreement.
Interest expense increased $3.2 million, or 50.5%, during the three months ended September 30, 2025, as compared to the prior year period, primarily due to the issuance of the 7.785% 2030 Notes in December 2024 and increased borrowings on our Credit Facility, partially offset by a decrease in the effective interest rate. The weighted-average balance outstanding under our Credit Facility during the three months ended September 30, 2025 was $107.6 million, compared to $60.8 million in the prior year period. The effective interest rate on our Credit Facility, excluding the impact of deferred financing costs, during the three months ended September 30, 2025 was 8.9%, as compared to 11.0% in the prior year period. The decrease in the effective interest rate on the Credit Facility was primarily a result of lower interest rates on the drawn portion of our Credit Facility, partially offset by an increase in unused commitment fees on the undrawn portion of the Credit Facility during the three months ended September 30, 2025.
Other expenses decreased $0.8 million, or 45.3%, during the three months ended September 30, 2025, as compared to the prior year period, due to a decrease in tax expense and bad debt expense.
50

Table of Contents
Realized and Unrealized Gain (Loss)
The realized gains (losses) and unrealized appreciation (depreciation) across our investments for the three months ended September 30, 2025 and 2024 were as follows:

|  | Three Months Ended September 30, 2025
Portfolio Company |  | Realized Gain (Loss) on Investments |  | Unrealized Appreciation (Depreciation) |  | Reversal of Unrealized (Appreciation) Depreciation |  | Net Gain (Loss)
SFEG Holdings, Inc. |  | $ | — |  |  | $ | 20,553 |  |  | $ | — |  |  | $ | 20,553 |
The E3 Company, LLC |  | — |  |  | 10,769 |  |  | — |  |  | 10,769 |
Schylling, Inc. |  | — |  |  | 5,683 |  |  | — |  |  | 5,683 |
Dema/Mai Holding, Inc. |  | — |  |  | 4,417 |  |  | — |  |  | 4,417 |
Brunswick Bowling Products, Inc. |  | — |  |  | 3,378 |  |  | — |  |  | 3,378 |
J.R. Hobbs Co. - Atlanta, LLC |  | (29,938) |  |  | 12,362 |  |  | 19,104 |  |  | 1,528 |
Ginsey Home Solutions, Inc. |  | — |  |  | 1,208 |  |  | — |  |  | 1,208 |
Horizon Facilities Services, Inc. |  | — |  |  | 978 |  |  | — |  |  | 978 |
Phoenix Door Systems, Inc. |  | — |  |  | (1,026) |  |  | — |  |  | (1,026) |
Pyrotek Special Effects, Inc. |  | — |  |  | (1,169) |  |  | — |  |  | (1,169) |
Home Concepts Acquisition, Inc. |  | — |  |  | (1,286) |  |  | — |  |  | (1,286) |
The Maids International, LLC |  | — |  |  | (1,288) |  |  | — |  |  | (1,288) |
Smart Chemical Solutions, LLC |  | — |  |  | (1,694) |  |  | — |  |  | (1,694) |
PSI Molded Plastics, Inc. |  | — |  |  | (2,104) |  |  | — |  |  | (2,104) |
Educators Resource, Inc. |  | — |  |  | (2,429) |  |  | — |  |  | (2,429) |
Detroit Defense, Inc. |  | — |  |  | (2,578) |  |  | — |  |  | (2,578) |
Old World Christmas, Inc. |  | — |  |  | (2,669) |  |  | — |  |  | (2,669) |
Diligent Delivery Systems |  | — |  |  | (2,707) |  |  | — |  |  | (2,707) |
UPB Acquisition, Inc. |  | — |  |  | (5,201) |  |  | — |  |  | (5,201) |
Other, net (<$1.0 million, net) |  | — |  |  | 151 |  |  | — |  |  | 151 |
Total |  | $ | (29,938) |  |  | $ | 35,348 |  |  | $ | 19,104 |  |  | $ | 24,514 |

|  | Three Months Ended September 30, 2024
Portfolio Company |  | Realized Gain (Loss) on Investments |  | Unrealized Appreciation (Depreciation) |  | Reversal of Unrealized (Appreciation) Depreciation |  | Net Gain (Loss)
Nocturne Luxury Villas, Inc. |  | $ | — |  |  | $ | 6,707 |  |  | $ | — |  |  | $ | 6,707 |
Nth Degree Investment Group, LLC |  | 42,284 |  |  | — |  |  | (38,028) |  |  | 4,256 |
ImageWorks Display and Marketing Group, Inc. |  | — |  |  | 3,269 |  |  | — |  |  | 3,269 |
Old World Christmas, Inc. |  | — |  |  | 3,203 |  |  | — |  |  | 3,203 |
Galaxy Technologies Holding, Inc. |  | — |  |  | 2,754 |  |  | — |  |  | 2,754 |
Schylling, Inc. |  | — |  |  | 2,566 |  |  | — |  |  | 2,566 |
The E3 Company, LLC |  | — |  |  | 2,561 |  |  | — |  |  | 2,561 |
The Maids International, LLC |  | — |  |  | 1,434 |  |  | — |  |  | 1,434 |
J.R. Hobbs Co. - Atlanta, LLC |  | — |  |  | 1,150 |  |  | — |  |  | 1,150 |
Phoenix Doors Systems, Inc. |  | — |  |  | 1,095 |  |  | — |  |  | 1,095 |
Edge Adhesives Holdings, Inc. |  | — |  |  | (892) |  |  | — |  |  | (892) |
UPB Acquisition, Inc. |  | — |  |  | (981) |  |  | — |  |  | (981) |
Ginsey Home Solutions, Inc. |  | — |  |  | (1,090) |  |  | — |  |  | (1,090) |
Brunswick Bowling Products, Inc. |  | — |  |  | (2,321) |  |  | — |  |  | (2,321) |
B+T Group Acquisition, Inc |  | — |  |  | (2,839) |  |  | — |  |  | (2,839) |
Horizon Facilities Service, Inc. |  | — |  |  | (11,752) |  |  | — |  |  | (11,752) |
Other, net (<$1.0 million, net) |  | 19 |  |  | (948) |  |  | — |  |  | (929) |
Total |  | $ | 42,303 |  |  | $ | 3,916 |  |  | $ | (38,028) |  |  | $ | 8,191 |

51

Table of Contents
Net Realized Gain (Loss) on Investments
During the three months ended September 30, 2025, we recorded net realized losses on investments of $29.9 million, due to the realized loss from the restructuring of J.R. Hobbs. During the three months ended September 30, 2024, we recorded net realized gains on investments of $42.3 million, due to the realized gain from the exit of Nth Degree Investment Group, LLC ("Nth Degree").
Net Unrealized Appreciation (Depreciation) of Investments
Net unrealized appreciation of investments of $54.5 million for the three months ended September 30, 2025 was primarily due to increased performance of certain of our portfolio companies and the reversal of previously recorded unrealized depreciation related to our investment in J.R. Hobbs upon its restructure. These increases were partially offset by decreased performance of certain of our portfolio companies and a decrease in transaction multiples used to estimate the fair value of certain of our portfolio companies.
Net unrealized depreciation of investments of $34.1 million for the three months ended September 30, 2024 was primarily due to the reversal of unrealized appreciation of Nth Degree upon our exit, and a decrease in the performance of certain of our portfolio companies. These decreases were partially offset by an increase in transaction multiples used to estimate the fair value of certain of our portfolio companies and increased performance of certain of our other portfolio companies.
Across our entire investment portfolio, we recorded net unrealized appreciation of $38.8 million on our equity positions and net unrealized appreciation of $15.7 million on our debt investments for the three months ended September 30, 2025. As of September 30, 2025, the fair value of our investment portfolio was more than our cost basis by $93.7 million, compared to June 30, 2025, when the fair value of our investment portfolio was more than our cost basis by $39.2 million. This resulted in net unrealized appreciation of $54.5 million for the three months ended September 30, 2025. Our entire portfolio was fair valued at 109.0% of cost as of September 30, 2025.
52

Table of Contents
Comparison of the Six Months Ended September 30, 2025 to the Six Months Ended September 30, 2024

| For the Six Months Ended September 30,
| 2025 |  | 2024 |  | Change |  | % Change
INVESTMENT INCOME |  |  |  |  |  |  |
Interest income | $ | 44,317 |  |  | $ | 41,621 |  |  | $ | 2,696 |  |  | 6.5 | %
Dividend and success fee income | 4,506 |  |  | 3,122 |  |  | 1,384 |  |  | 44.3 | %
Total investment income | 48,823 |  |  | 44,743 |  |  | 4,080 |  |  | 9.1 | %
EXPENSES |  |  |  |  |  |  |
Base management fee | 10,537 |  |  | 9,065 |  |  | 1,472 |  |  | 16.2 | %
Loan servicing fee | 5,604 |  |  | 4,416 |  |  | 1,188 |  |  | 26.9 | %
Incentive fee | 4,998 |  |  | (1,556) |  |  | 6,554 |  |  | NM
Administration fee | 953 |  |  | 1,073 |  |  | (120) |  |  | (11.2) | %
Interest expense | 18,130 |  |  | 12,879 |  |  | 5,251 |  |  | 40.8 | %
Amortization of deferred financing costs and discounts | 1,820 |  |  | 1,260 |  |  | 560 |  |  | 44.4 | %
Other | 2,055 |  |  | 3,613 |  |  | (1,558) |  |  | (43.1) | %
Expenses before credits from Adviser | 44,097 |  |  | 30,750 |  |  | 13,347 |  |  | 43.4 | %
Credits to fees from Adviser | (8,641) |  |  | (5,712) |  |  | (2,929) |  |  | 51.3 | %
Total expenses, net of credits to fees | 35,456 |  |  | 25,038 |  |  | 10,418 |  |  | 41.6 | %
NET INVESTMENT INCOME | 13,367 |  |  | 19,705 |  |  | (6,338) |  |  | (32.2) | %
REALIZED AND UNREALIZED GAIN (LOSS) |  |  |  |  |  |  |
Net realized (loss) gain on investments | (29,938) |  |  | 42,305 |  |  | (72,243) |  |  | NM
Net unrealized appreciation (depreciation) of investments | 53,052 |  |  | (53,054) |  |  | 106,106 |  |  | NM
Net realized and unrealized gain (loss) | 23,114 |  |  | (10,749) |  |  | 33,863 |  |  | NM
NET INCREASE IN NET ASSETS RESULTING FROM OPERATIONS | $ | 36,481 |  |  | $ | 8,956 |  |  | $ | 27,525 |  |  | 307.3 | %
WEIGHTED-AVERAGE SHARES OF COMMON STOCK OUTSTANDING |  |  |  |  |  |  |
Basic and diluted | 37,681,491 |  |  | 36,688,667 |  |  | 992,824 |  |  | 2.7 | %
BASIC AND DILUTED PER COMMON SHARE: |  |  |  |  |  |  |
Net investment income | $ | 0.35 |  |  | $ | 0.54 |  |  | $ | (0.19) |  |  | (35.2) | %
Net increase in net assets resulting from operations | $ | 0.97 |  |  | $ | 0.24 |  |  | $ | 0.73 |  |  | 304.2 | %

NM = Not Meaningful
53

Table of Contents
Investment Income
Total investment income increased $4.1 million, or 9.1%, for the six months ended September 30, 2025, as compared to the prior year period, primarily due to an increase in interest income and dividend and success fee income.
Interest income from our investments in debt securities increased $2.7 million, or 6.5%, for the six months ended September 30, 2025, as compared to the prior year period. Generally, the level of interest income from investments is directly related to the weighted-average principal balance of our interest-bearing investment portfolio outstanding during the period, multiplied by the weighted-average yield.
The weighted-average principal balance of our interest-bearing investment portfolio during the six months ended September 30, 2025 was $639.6 million, compared to $578.1 million for the prior year period. This increase was primarily due to the origination of $222.9 million of new debt investments and $42.2 million of follow-on debt investments in existing portfolio companies, partially offset by $129.4 million of pay-offs, restructurings, or write-offs of debt investments and $30.8 million of existing loans placed on non-accrual status after March 31, 2024, and their respective impact on the weighted-average principal balance when considering the timing of new investments, pay-offs, restructurings, write-offs, and accrual status changes, as applicable. During the six months ended September 30, 2025, we collected $1.8 million in past due interest from portfolio companies that were previously on non-accrual status, including $1.5 million from SFEG and $0.3 million from J.R. Hobbs. We had no collections of past due interest during the six months ended September 30, 2024.
The weighted-average yield on our interest-bearing investments, excluding cash and cash equivalents and receipts recorded as dividend and success fee income, was 13.7% for the six months ended September 30, 2025, compared to 14.4% for the prior year period. The weighted-average yield may vary from period to period, based on the current stated interest rate on interest-bearing investments, coupled with any collection of past due interest during the period.
As of September 30, 2025, our loans to B+T, Diligent and Edge were on non-accrual status, with an aggregate debt cost basis of $40.3 million. As of September 30, 2024, our loans to B+T, Diligent, Edge, and J.R. Hobbs were also on non-accrual status, with an aggregate debt cost basis of $90.0 million.
As of September 30, 2025 and March 31, 2025, SFEG represented 11.5% and 10.8% of the total investment portfolio at fair value, respectively.
Dividend and success fee income for the six months ended September 30, 2025 increased $1.4 million, or 44.3% from the prior year period. During the six months ended September 30, 2025, dividend and success fee income consisted of $3.7 million of dividend income and $0.8 million of success fee income. During the six months ended September 30, 2024, dividend and success fee income consisted of $1.7 million of success fee income and $1.4 million of dividend income.
Expenses
Total expenses, net of any non-contractual, unconditional, and irrevocable credits from the Adviser, increased $10.4 million, or 41.6%, during the six months ended September 30, 2025, as compared to the prior year period, primarily due to an increase in incentive fees, interest expense and base management fee, partially offset by a decrease in other expense and an increase in fee credits from the Adviser.
In accordance with GAAP, we recorded a $4.7 million capital gains-based incentive fee during the six months ended September 30, 2025, compared to a $2.2 million reversal of previously accrued capital gains-based incentive fee recorded during the six months ended September 30, 2024. The capital gains-based incentive fee was a result of the net impact of net realized gains and net unrealized appreciation (depreciation) on investments during the respective periods. The income-based incentive fee decreased by $0.3 million for the six months ended September 30, 2025, as compared to the prior year period, primarily due to an increase in net assets, which drives the hurdle rate.
54

Table of Contents
The base management fee, loan servicing fee, incentive fee, and their related non-contractual, unconditional, and irrevocable credits are computed quarterly, as described under “Transactions with the Adviser” in Note 4 — Related Party Transactions in the accompanying Notes to Consolidated Financial Statements and are summarized in the following table:

| Six Months Ended September 30,
| 2025 |  | 2024
Average total assets subject to base management fee(A) | $ | 1,053,700 |  |  | $ | 906,500 |
Multiplied by prorated annual base management fee of 2.0% | 1.0 | % |  | 1.0 | %
Base management fee(B) | $ | 10,537 |  |  | $ | 9,065 |
Credits to fees from Adviser - other(B) | (3,037) |  |  | (1,296) |
Net base management fee | $ | 7,500 |  |  | $ | 7,769 |
Loan servicing fee(B) | $ | 5,604 |  |  | $ | 4,416 |
Credits to base management fee - loan servicing fee(B) | (5,604) |  |  | (4,416) |
Net loan servicing fee | $ | — |  |  | $ | — |
Incentive fee – income-based | $ | 310 |  |  | $ | 594 |
Incentive fee – capital gains-based(C) | 4,688 |  |  | (2,150) |
Total incentive fee(B) | $ | 4,998 |  |  | $ | (1,556) |
Credits to fees from Adviser - other(B) | — |  |  | — |
Net total incentive fee | $ | 4,998 |  |  | $ | (1,556) |

(A)Average total assets subject to the base management fee is defined in the Advisory Agreement as total assets, including investments made with proceeds of borrowings, less any uninvested cash or cash equivalents resulting from borrowings, valued at the end of the applicable quarters within the respective periods and adjusted appropriately for any share issuances or repurchases during the periods.
(B)Reflected as a line item on our Consolidated Statements of Operations.
(C)The capital gains-based incentive fees are recorded in accordance with GAAP and do not necessarily reflect amounts contractually due under the terms of the Advisory Agreement.
Interest expense increased $5.3 million, or 40.8%, during the six months ended September 30, 2025, as compared to the prior year period, primarily due to interest expense related to the issuance of the 7.785% 2030 Notes in December 2024 and increased borrowings on the Credit Facility, partially offset by a decrease in the effective interest rate. The weighted-average balance outstanding on the Credit Facility during the six months ended September 30, 2025 was $72.2 million as compared to $62.8 million in the prior year period. The effective interest rate on the Credit Facility, excluding the impact of deferred financing costs, during the six months ended September 30, 2025 was 10.2%, as compared to 10.9% in the prior year period. The decrease in the effective interest rate on the Credit Facility was primarily a result of lower interest rates on the drawn portion of our Credit Facility, partially offset by an increase in unused commitment fees on the undrawn portion of the Credit Facility during the six months ended September 30, 2025.
Other expenses decreased $1.6 million, or 43.1%, during the six months ended September 30, 2025, as compared to the prior year period, due to an decrease in bad debt expense and tax expense, partially offset by an increase in professional fees.
55

Table of Contents
Realized and Unrealized Gain (Loss)
The realized gains (losses) and unrealized appreciation (depreciation) across our investments for the six months ended September 30, 2025 and 2024 were as follows:

|  | Six Months Ended September 30, 2025
Portfolio Company |  | Realized Gain (Loss) on Investments |  | Unrealized Appreciation (Depreciation) |  | Reversal of Unrealized (Appreciation) Depreciation |  | Net Gain (Loss)
SFEG Holdings, Inc. |  | $ | — |  |  | $ | 25,106 |  |  | $ | — |  |  | $ | 25,106 |
The E3 Company, LLC |  | — |  |  | 13,465 |  |  | — |  |  | 13,465 |
J.R. Hobbs Co. - Atlanta, LLC |  | (29,938) |  |  | 12,873 |  |  | 19,104 |  |  | 2,039 |
Schylling, Inc. |  | — |  |  | 8,665 |  |  | — |  |  | 8,665 |
ImageWorks Display and Marketing Group, Inc. |  | — |  |  | 4,904 |  |  | — |  |  | 4,904 |
Dema/Mai Holding, Inc. |  | — |  |  | 4,172 |  |  | — |  |  | 4,172 |
Horizon Facilities Services, Inc. |  | — |  |  | 2,078 |  |  | — |  |  | 2,078 |
Mason West, LLC |  | — |  |  | 1,834 |  |  | — |  |  | 1,834 |
Nielsen-Kellerman Acquisition Corp. |  | — |  |  | 1,371 |  |  | — |  |  | 1,371 |
Old World Christmas, Inc. |  | — |  |  | (1,296) |  |  | — |  |  | (1,296) |
Smart Chemical Solutions, LLC |  | — |  |  | (1,694) |  |  | — |  |  | (1,694) |
Detroit Defense, Inc. |  | — |  |  | (1,797) |  |  | — |  |  | (1,797) |
Ginsey Home Solutions, Inc. |  | — |  |  | (2,260) |  |  | — |  |  | (2,260) |
Diligent Delivery Systems |  | — |  |  | (2,332) |  |  | — |  |  | (2,332) |
Phoenix Door Systems, Inc. |  | — |  |  | (2,626) |  |  | — |  |  | (2,626) |
UPB Acquisition, Inc. |  | — |  |  | (2,706) |  |  | — |  |  | (2,706) |
Brunswick Bowling Products, Inc. |  | — |  |  | (3,014) |  |  | — |  |  | (3,014) |
Galaxy Technologies Holdings, Inc. |  | — |  |  | (3,480) |  |  | — |  |  | (3,480) |
The Maids International, LLC |  | — |  |  | (5,016) |  |  | — |  |  | (5,016) |
Educators Resource, Inc. |  | — |  |  | (5,734) |  |  | — |  |  | (5,734) |
PSI Molded Plastics, Inc. |  | — |  |  | (8,238) |  |  | — |  |  | (8,238) |
Other, net (<$1.0 million, net) |  | — |  |  | 26 |  |  | — |  |  | 26 |
Total |  | $ | (29,938) |  |  | $ | 34,301 |  |  | $ | 19,104 |  |  | $ | 23,467 |

56

Table of Contents

|  | Six Months Ended September 30, 2024
Portfolio Company |  | Realized Gain (Loss) |  | Unrealized Appreciation (Depreciation) |  | Reversal of Unrealized (Appreciation) Depreciation |  | Net Gain (Loss)
The E3 Company, LLC |  | $ | — |  |  | $ | 5,208 |  |  | $ | — |  |  | $ | 5,208 |
Nocturne Luxury Villas, Inc. |  | — |  |  | 4,988 |  |  | — |  |  | 4,988 |
Old World Christmas, Inc. |  | — |  |  | 4,734 |  |  | — |  |  | 4,734 |
Schylling, Inc. |  | — |  |  | 3,031 |  |  | — |  |  | 3,031 |
UPB Acquisition, Inc |  | — |  |  | 2,987 |  |  | — |  |  | 2,987 |
Galaxy Technologies Holdings, Inc. |  | — |  |  | 2,757 |  |  | — |  |  | 2,757 |
Ginsey Home Solutions, Inc. |  | — |  |  | 2,385 |  |  | — |  |  | 2,385 |
J.R. Hobbs Co. - Atlanta, LLC |  | — |  |  | 1,349 |  |  | — |  |  | 1,349 |
Dema/Mai Holdings, Inc. |  | — |  |  | 1,318 |  |  | — |  |  | 1,318 |
The Maids International, LLC |  | — |  |  | 1,251 |  |  | — |  |  | 1,251 |
Diligent Delivery Systems |  | — |  |  | (1,092) |  |  | — |  |  | (1,092) |
Home Concepts Acquisition, Inc. |  | — |  |  | (1,238) |  |  | — |  |  | (1,238) |
PSI Molded Plastics, Inc. |  | — |  |  | (1,767) |  |  | — |  |  | (1,767) |
Brunswick Bowling Products, Inc. |  | — |  |  | (2,165) |  |  | — |  |  | (2,165) |
Edge Adhesives Holdings, Inc. |  | — |  |  | (2,335) |  |  | — |  |  | (2,335) |
B+T Group Acquisition, Inc. |  | — |  |  | (2,742) |  |  | — |  |  | (2,742) |
Nth Degree Investment Group, LLC |  | 42,284 |  |  | (7,195) |  |  | (38,028) |  |  | (2,939) |
Horizon Facilities Services, Inc. |  |  |  | (8,614) |  |  |  |  | (8,614) |
Phoenix Door Systems, Inc. |  |  |  | (18,163) |  |  |  |  | (18,163) |
Other, net (<$1.0 million, net) |  | 21 |  |  | 273 |  |  | 4 |  |  | 298 |
Total |  | $ | 42,305 |  |  | $ | (15,030) |  |  | $ | (38,024) |  |  | $ | (10,749) |

Net Realized Gain (Loss)
During the six months ended September 30, 2025, we recorded net realized losses on investments of $29.9 million, due to the realized loss from the restructuring of J.R. Hobbs. During the six months ended September 30, 2024, we recorded net realized gains on investments of $42.3 million, due to the realized gain from the exit of Nth Degree.
Net Unrealized Appreciation (Depreciation) on Investments
Net unrealized appreciation of investments of $53.4 million for the six months ended September 30, 2025 was primarily due to the increased performance of certain of our portfolio companies and the reversal of previously recorded unrealized depreciation related to our investment in J.R. Hobbs upon its restructure. These increases were partially offset by decreased performance of certain of our portfolio companies and a decrease in transaction multiples used to estimate the fair value of certain of our portfolio companies.
Net unrealized depreciation of investments of $53.1 million for the six months ended September 30, 2024 was primarily due to the reversal of unrealized appreciation of Nth Degree upon our exit and decreased performance of certain of our portfolio companies. These decreases were partially offset by an increase in transaction multiples used to estimate the fair value of certain of our portfolio companies and increased performance of certain of our portfolio companies.
Across our entire investment portfolio, we recorded net unrealized appreciation of $36.2 million on our equity positions and appreciation of $17.2 million on our debt positions, for the six months ended September 30, 2025. As of September 30, 2025, the fair value of our investment portfolio was more than the cost basis by $93.7 million, as compared to March 31, 2025, when the fair value of our investment portfolio was more than the cost basis by $40.3 million, representing net unrealized appreciation of $53.4 million for the six months ended September 30, 2025. Our entire portfolio had a fair value of 109.0% of cost as of September 30, 2025.
57

Table of Contents
LIQUIDITY AND CAPITAL RESOURCES
Operating Activities
Net cash used in operating activities for the six months ended September 30, 2025 was $110.8 million compared to net cash provided by operating activities of $75.5 million for the six months ended September 30, 2024. This change was primarily due to an increase in purchases of investments and decrease in net proceeds from the sale and recapitalization of investments and principal repayments of investments.
Purchases of investments totaled $133.9 million during the six months ended September 30, 2025, compared to $20.1 million during the six months ended September 30, 2024. Aggregate net proceeds from the sale and recapitalization of investments and principal repayments of investments totaled $5.8 million during the six months ended September 30, 2025, compared to $76.5 million during the six months ended September 30, 2024.
As of September 30, 2025, we had equity investments in and/or loans to 28 portfolio companies with an aggregate cost basis of $1.0 billion. As of September 30, 2024, we had equity investments in and/or loans to 22 portfolio companies with an aggregate cost basis of $840.1 million.
The following table summarizes our total portfolio investment activity during the six months ended September 30, 2025 and 2024:

| Six Months Ended September 30,
| 2025 |  | 2024
Beginning investment portfolio, at fair value | $ | 979,320 |  |  | $ | 920,504 |
New investments | 129,922 |  |  | — |
Disbursements to existing portfolio companies | 3,956 |  |  | 20,098 |
Unscheduled principal repayments | (5,806) |  |  | (28,000) |
Net proceeds from sale and recapitalization of investments | — |  |  | (48,546) |
Net realized (loss) gain on investments | (29,938) |  |  | 42,305 |
Net unrealized appreciation (depreciation) of investments | 34,301 |  |  | (15,030) |
Reversal of net unrealized depreciation (appreciation) of investments | 19,104 |  |  | (38,024) |
Ending investment portfolio, at fair value | $ | 1,130,859 |  |  | $ | 853,307 |

The following table summarizes the contractual principal repayment and maturity of our investment portfolio by fiscal year, assuming no voluntary prepayments, as of September 30, 2025:

|  |  | Amount
For the remaining six months ending March 31, 2026 |  | $ | 15,000 |
For the fiscal years ending March 31: |  |
| 2027 |  | 61,186 |
| 2028 |  | 120,282 |
| 2029 |  | 269,844 |
| 2030 |  | 159,506 |
| Thereafter |  | 111,680 |
| Total contractual repayments |  | $ | 737,498 |
| Investments in equity securities |  | 299,702 |
| Total cost basis of investments held as of September 30, 2025: |  | $ | 1,037,200 |

58

Table of Contents
Financing Activities
Net cash provided by financing activities for the six months ended September 30, 2025 was $97.9 million, which consisted primarily of $97.7 million of net borrowings under our Credit Facility and $38.4 million of proceeds from issuance of common stock, net of expenses and shelf offering registration costs, partially offset by $38.1 million in distributions to common stockholders and $0.1 million of deferred financing and offering costs.
Net cash used in financing activities for the six months ended September 30, 2024 was $76.0 million, which consisted primarily of $58.1 million of net repayments under our Credit Facility, $17.6 million in distributions to common stockholders and $0.3 million of deferred financing and offering costs.
Distributions and Dividends to Stockholders
Common Stock Distributions
To qualify to be taxed as a RIC and thus avoid corporate level federal income tax on the income we distribute to our stockholders, we are required, among other requirements, to distribute to our stockholders on an annual basis at least 90% of our taxable ordinary income plus the excess of our net short-term capital gains over net long-term capital losses (“Investment Company Taxable Income”), determined without regard to the dividends paid deduction. Additionally, our Credit Facility generally restricts the amount of distributions to stockholders that we can pay out to be no greater than the sum of certain amounts, including our net investment income, plus net capital gains, plus amounts elected by the Company to be considered as having been paid during the prior fiscal year in accordance with Section 855(a) of the Code. In accordance with these requirements, our Board of Directors declared, and we paid, monthly cash distributions of $0.08 per common share for each of the six months from April through September 2025, and a supplemental distribution of $0.54 per common share paid in June 2025. See also “Recent Developments - Distributions and Dividends” for a discussion of cash distributions to common stockholders declared our Board of Directors in October 2025.
For the fiscal year ended March 31, 2025, Investment Company Taxable Income exceeded distributions declared and paid, and, in accordance with Section 855(a) of the Code, we elected to treat $36.7 million of the first distributions paid subsequent to fiscal year-end as having been paid in the prior year. In addition, for the fiscal year ended March 31, 2025, net capital gains exceeded distributions declared and paid, and, in accordance with Section 855(a) of the Code, we elected to treat $18.7 million of the first distributions paid subsequent to fiscal year-end as having been paid in the prior year. For the year ended March 31, 2025, we recorded $1.2 million of net adjustments for estimated permanent book-tax differences to reflect tax character, which decreased Capital in excess of par value and Overdistributed net investment income. For the six months ended September 30, 2025, we recorded $2.2 thousand of net adjustments for estimated permanent book-tax differences to reflect tax character, which increased Accumulated net realized (loss) gain in excess of distributions and increased Overdistributed net investment income and Capital in excess of par value.
Dividend Reinvestment Plan
Our common stockholders who hold their shares through our transfer agent, Computershare, Inc. (“Computershare”), have the option to participate in a dividend reinvestment plan offered by Computershare, as the plan agent. This is an “opt in” dividend reinvestment plan, meaning that common stockholders may elect to have their cash distributions automatically reinvested in additional shares of our common stock. Common stockholders who do not make such election will receive their distributions in cash. Any distributions reinvested under the plan will be taxable to a common stockholder to the same extent, and with the same character, as if the common stockholder had received the distribution in cash. The common stockholder generally will have an adjusted basis in the additional common shares purchased through the plan equal to the dollar amount that would have been received if the U.S. stockholder had received the dividend or distribution in cash. The additional common shares will have a new holding period commencing on the day following the date on which the shares are credited to the common stockholder’s account. Computershare purchases shares in the open market in connection with the obligations under the plan.
59

Table of Contents
Equity
Registration Statement
On February 28, 2024, we filed a registration statement on Form N-2 (File No. 333-277452), which the SEC declared effective on April 18, 2024. The registration statement permits us to issue, through one or more transactions, up to an aggregate of $450.0 million in securities, consisting of common stock, preferred stock, subscription rights, debt securities, and warrants to purchase common stock, preferred stock, or debt securities, including through concurrent, separate offerings of such securities. As of the date of this report, we have the ability to issue up to an additional $281.8 million of the securities registered under the registration statement.
Common Stock
In May 2024, we entered into equity distribution agreements with Oppenheimer & Co., B. Riley Securities, Inc. and Virtu Americas LLC (collectively, the “Sales Agents”), under which we have the ability to issue and sell shares of our common stock, from time to time, through the Sales Agents, having an aggregate offering price of up to $75.0 million in the 2024 Common Stock ATM Program. In June 2025, we entered into an equity distribution agreement with M&T Securities, Inc. and entered into amendments to the agreements with Oppenheimer & Co. Inc., B. Riley Securities, Inc. and Virtu Americas LLC to add M&T Securities, Inc. as a Sales Agent for the 2024 Common Stock ATM Program. As of September 30, 2025, we had remaining capacity to sell up to an additional $34.1 million of common stock under the 2024 Common Stock ATM Program.
In August 2022, we entered into equity distribution agreements with Oppenheimer & Co. and Virtu Americas LLC (each a “2022 Sales Agent”), under which we had the ability to issue and sell shares of our common stock, from time to time, through the 2022 Sales Agents, up to an aggregate offering price of $50.0 million in the 2022 Common Stock ATM Program. In August 2023, we entered into an equity distribution agreement with B. Riley Securities, Inc. and entered into amendments to the agreements with Oppenheimer & Co. Inc. and Virtu Americas LLC to add B. Riley Securities, Inc. as a 2022 Sales Agent for the 2022 Common Stock ATM Program. We did not sell any shares under the 2022 Common Stock ATM Program, which terminated in connection with our entry into the 2024 Common Stock ATM Program on May 14, 2024, during the six months ended September 30, 2024.
During the three months ended September 30, 2025, we sold 2,238,361 shares of our common stock under the 2024 Common Stock ATM Program, with a weighted-average gross price of $14.10 per share and a weighted-average net price of $13.90 per share after deducting commissions and offering costs borne by us, raising approximately $31.6 million and $31.1 million of gross and net proceeds, respectively. These sales were above our then current NAV per share.
During the six months ended September 30, 2025, we sold 2,753,656 shares of our common stock under the 2024 Common Stock ATM Program, with a weighted-average gross price of $14.12 per share and a weighted-average net price of $13.93 per share after deducting commissions and offering costs borne by us, raising approximately $38.9 million and $38.4 million of gross and net proceeds, respectively. These sales were above our then current NAV per share.
During the three and six months ended September 30, 2024, we did not sell any shares under the 2024 Common Stock ATM Program.
We anticipate issuing equity securities to obtain additional capital in the future. However, we cannot determine the timing or terms of any future equity issuances or whether we will be able to issue equity on terms favorable to us, or at all. When our common stock is trading at a price below NAV per share, the 1940 Act places regulatory constraints on our ability to obtain additional capital by issuing common stock. Generally, the 1940 Act provides that we may not issue and sell our common stock at a price below our NAV per common share, other than to our then-existing common stockholders pursuant to a rights offering, without first obtaining approval from our stockholders and our independent directors and meeting other stated requirements. As of September 30, 2025, the closing market price of our common stock was $13.82 per share, representing a 2.1% premium to our NAV per share of $13.53 as of September 30, 2025.
60

Table of Contents
Revolving Line of Credit
As of September 30, 2025, our Credit Facility had a total commitment amount of $270.0 million with an "accordion" feature that permits us to increase the size of the facility to $300.0 million. The Credit Facility has a revolving period end date of October 30, 2026 and a final maturity date of October 30, 2028 (at which time all principal and interest will be due and payable if the Credit Facility is not extended by the revolving period end date). See "Overview - Revolving Line of Credit".
As of September 30, 2025, advances under the Credit Facility generally bore interest at 30-day Term SOFR, subject to a floor of 0.35%, with a SOFR credit spread adjustment of 10 basis points, plus a margin of 3.15% per annum until October 30, 2026, with the margin then increasing to 3.40% for the period from October 30, 2026 to October 30, 2027, and increasing further to 3.65% thereafter. The Credit Facility has an unused commitment fee on the daily unused commitment amount of 0.50% per annum if the daily unused commitment amount is less than or equal to 50% of the total commitment amount, 0.75% per annum if the daily unused commitment amount is greater than 50% but less than or equal to 65% of the total commitment amount, and 1.00% per annum if the daily unused commitment amount is greater than 65% of the total commitment amount.
At September 30, 2025, we had $97.7 million of borrowings outstanding on the Credit Facility and as of the date of this report, we had $95.9 million outstanding under our Credit Facility.
Interest is payable monthly during the term of our Credit Facility. Available borrowings are subject to various constraints and applicable advance rates, which are generally based on the size, characteristics, and quality of the collateral pledged by Business Investment. Our Credit Facility also requires that any interest and principal payments on pledged loans be remitted directly by the borrower into a lockbox account with KeyBank. KeyBank is also the trustee of the account and generally remits the collected funds to us once a month.
Among other things, our Credit Facility contains covenants that require Business Investment to maintain its status as a separate legal entity, prohibit certain significant corporate transactions (such as mergers, consolidations, liquidations or dissolutions) and restrict certain material changes to our credit and collection policies without the lenders’ consent. Our Credit Facility also generally seeks to restrict distributions to stockholders to the sum of (i) our net investment income, (ii) net capital gains, and (iii) amounts deemed by the Company to be considered as having been paid during the prior fiscal year in accordance with Section 855(a) of the Code. Loans eligible to be pledged as collateral are subject to certain limitations, including, among other things, restrictions on geographic concentrations, industry concentrations, loan size, payment frequency and status, average life, portfolio company leverage, and lien property. Our Credit Facility also requires Business Investment to comply with other financial and operational covenants, which obligate Business Investment to, among other things, maintain certain financial ratios, including asset and interest coverage and a minimum number of obligors required in the borrowing base. Additionally, our Credit Facility contains a performance guaranty that requires the Company to maintain (i) a minimum net worth of the greater of $210.0 million or $210.0 million plus 50% of all equity and subordinated debt raised, minus 50% of any equity or subordinated debt redeemed or retired after November 16, 2016, which equated to $432.4 million as of September 30, 2025, (ii) asset coverage with respect to senior securities representing indebtedness of at least 150% (or such percentage as may be set forth in Section 18 of the 1940 Act, as modified by Section 61 of the 1940 Act), and (iii) our status as a BDC under the 1940 Act and as a RIC under the Code. As of September 30, 2025, and as defined in the performance guaranty of our Credit Facility, we had a net worth of $991.8 million, asset coverage on our senior securities representing indebtedness of 193.2%, calculated in compliance with the requirements of Sections 18 and 61 of the 1940 Act, and an active status as a BDC and RIC. As of September 30, 2025, we had availability, after adjustments for various constraints based on collateral quality, of $172.3 million under our Credit Facility and were in compliance with all covenants under our Credit Facility.
61

Table of Contents
Notes Payable
5.00% Notes due 2026
In March 2021, we completed a public offering of the 5.00% 2026 Notes with an aggregate principal amount of $127.9 million, which resulted in net proceeds of approximately $123.8 million after deducting underwriting discounts, commissions and offering costs borne by us. The 5.00% 2026 Notes are traded under the ticker symbol “GAINN” on Nasdaq. The 5.00% 2026 Notes will mature on May 1, 2026 and may be redeemed in whole or in part at any time or from time to time at the Company’s option. The 5.00% 2026 Notes bear interest at a rate of 5.00% per year (which equates to $6.4 million per year), payable quarterly in arrears.
The indenture relating to the 5.00% 2026 Notes contains certain covenants, including (i) an inability to incur additional debt or issue additional debt or preferred securities unless the Company’s asset coverage meets the threshold specified in the 1940 Act after such borrowing, (ii) an inability to declare any dividend or distribution (except a dividend payable in our stock) on a class of our capital stock or to purchase shares of our capital stock unless the Company’s asset coverage meets the threshold specified in the 1940 Act at the time of (and giving effect to) such declaration or purchase, and (iii) if, at any time, we are not subject to the reporting requirements of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), we will provide the holders of the 5.00% 2026 Notes and the trustee with audited annual consolidated financial statements and unaudited interim consolidated financial statements.
The 5.00% 2026 Notes are recorded at the aggregate principal amount, less underwriting discounts, commissions, and offering costs, on our accompanying Consolidated Statements of Assets and Liabilities. Total underwriting discounts, commissions, and offering costs related to this offering were $4.1 million, which have been recorded as discounts to the aggregate principal amount on our accompanying Consolidated Statements of Assets and Liabilities and are being amortized over the period ending May 1, 2026, the maturity date.
4.875% Notes due 2028
In August 2021, we completed a public offering of the 4.875% 2028 Notes with an aggregate principal amount of $134.6 million, which resulted in net proceeds of approximately $131.3 million after deducting underwriting discounts, commissions and offering costs borne by us. The 4.875% 2028 Notes are traded under the ticker symbol “GAINZ” on Nasdaq. The 4.875% 2028 Notes will mature on November 1, 2028 and may be redeemed in whole or in part at any time or from time to time at the Company’s option. The 4.875% 2028 Notes bear interest at a rate of 4.875% per year (which equates to $6.6 million per year), payable quarterly in arrears.
The indenture relating to the 4.875% 2028 Notes contains certain covenants, including (i) an inability to incur additional debt or issue additional debt or preferred securities unless the Company’s asset coverage meets the threshold specified in the 1940 Act after such borrowing, (ii) an inability to declare any dividend or distribution (except a dividend payable in our stock) on a class of our capital stock or to purchase shares of our capital stock unless the Company’s asset coverage meets the threshold specified in the 1940 Act at the time of (and giving effect to) such declaration or purchase, and (iii) if, at any time, we are not subject to the reporting requirements of the Exchange Act, we will provide the holders of the 4.875% 2028 Notes and the trustee with audited annual consolidated financial statements and unaudited interim consolidated financial statements.
The 4.875% 2028 Notes are recorded at the aggregate principal amount, less underwriting discounts, commissions, and offering costs, on our accompanying Consolidated Statements of Assets and Liabilities. Total underwriting discounts, commissions, and offering costs related to this offering were $3.3 million, which have been recorded as discounts to the aggregate principal amount on our accompanying Consolidated Statements of Assets and Liabilities and are being amortized over the period ending November 1, 2028, the maturity date.
62

Table of Contents
8.00% Notes due 2028
In May 2023, we completed a public offering of the 8.00% 2028 Notes with an aggregate principal amount of $74.8 million, which resulted in net proceeds of approximately $72.3 million after deducting underwriting discounts, commissions and offering costs borne by us. The 8.00% 2028 Notes are traded under the ticker symbol “GAINL” on Nasdaq. The 8.00% 2028 Notes will mature on August 1, 2028 and may be redeemed in whole or in part at any time or from time to time at the Company’s option. The 8.00% 2028 Notes bear interest at a rate of 8.00% per year (which equates to $6.0 million per year), payable quarterly in arrears.
The indenture relating to the 8.00% 2028 Notes contains certain covenants, including (i) an inability to incur additional debt or issue additional debt or preferred securities unless the Company’s asset coverage meets the threshold specified in the 1940 Act after such borrowing, (ii) an inability to declare any dividend or distribution (except a dividend payable in our stock) on a class of our capital stock or to purchase shares of our capital stock unless the Company’s asset coverage meets the threshold specified in the 1940 Act at the time of (and giving effect to) such declaration or purchase, and (iii) if, at any time, we are not subject to the reporting requirements of the Exchange Act, we will provide the holders of the 8.00% 2028 Notes and the trustee with audited annual consolidated financial statements and unaudited interim consolidated financial statements.
The 8.00% 2028 Notes are recorded at the aggregate principal amount, less underwriting discounts, commissions, and offering costs, on our accompanying Consolidated Statements of Assets and Liabilities. Total underwriting discounts, commissions, and offering costs related to this offering were $2.5 million, which have been recorded as discounts to the aggregate principal amount on our accompanying Consolidated Statements of Assets and Liabilities and are being amortized over the period ending August 1, 2028, the maturity date.
7.875% Notes due 2030
In December 2024, we completed a public offering of the 7.875% 2030 Notes with an aggregate principal amount of $126.5 million, which resulted in net proceeds of approximately $122.4 million after deducting underwriting discounts, commissions and offering costs borne by us. The 7.875% 2030 Notes are traded under the ticker symbol “GAINI” on Nasdaq. The 7.875% 2030 Notes will mature on February 1, 2030 and may be redeemed in whole or in part at any time or from time to time at the Company’s option on or after February 1, 2027. The 7.875% 2030 Notes bear interest at a rate of 7.875% per year (which equates to $10.0 milli on per year), payable quarterly in arrears.
The indenture relating to the 7.875% 2030 Notes contains certain covenants, including (i) an inability to incur additional debt or issue additional debt or preferred securities unless the Company’s asset coverage meets the threshold specified in the 1940 Act after such borrowing, (ii) an inability to declare any dividend or distribution (except a dividend payable in our stock) on a class of our capital stock or to purchase shares of our capital stock unless the Company’s asset coverage meets the threshold specified in the 1940 Act at the time of (and giving effect to) such declaration or purchase, and (iii) if, at any time, we are not subject to the reporting requirements of the Exchange Act, we will provide the holders of the 7.875% 2030 Notes and the trustee with audited annual consolidated financial statements and unaudited interim consolidated financial statements.
The 7.875% 2030 Notes are recorded at the aggregate principal amount, less underwriting discounts, commissions, and offering costs, on our accompanying Consolidated Statements of Assets and Liabilities. Total underwriting discounts, commissions, and offering costs related to this offering were $4.1 million, which have been recorded as discounts to the aggregate principal amount on our accompanying Consolidated Statements of Assets and Liabilities and are being amortized over the period ending February 1, 2030, the maturity date.
OFF-BALANCE SHEET ARRANGEMENTS
Unlike PIK income, we generally do not recognize success fees as income until payment has been received. Due to the contingent nature of success fees, there are no guarantees that we will be able to collect any or all of these success fees or know the timing of any such collections. As a result, as of September 30, 2025 and March 31, 2025, we had unrecognized, contractual off-balance sheet success fee receivables of $59.3 million and $52.5 million (or approximately $1.50 and $1.43 per common share), respectively, on our debt investments. Consistent with GAAP, we have not recognized success fee receivables and related income in our accompanying Consolidated Financial Statements until earned.
63

Table of Contents
CONTRACTUAL OBLIGATIONS
We have line of credit commitments to certain of our portfolio companies that have not been fully drawn. Since these line of credit commitments have expiration dates and we expect many will never be fully drawn, the total line of credit commitment amounts do not necessarily represent future cash requirements. We estimate the fair value of the combined unused line of credit commitments as of September 30, 2025 to be insignificant.
The following table shows our contractual obligations as of September 30, 2025, at cost:

|  | Payments Due by Period
Contractual Obligations(A) |  | Total |  | Less than 1 Year |  | 1-3 Years |  | 3-5 Years |  | More than 5 Years
Credit Facility(B) |  | $ | 97,700 |  |  | $ | — |  |  | $ | — |  |  | $ | 97,700 |  |  | $ | — |
Notes payable |  | 463,738 |  |  | 127,938 |  |  | 74,750 |  |  | 261,050 |  |  | — |
Interest payments on obligations(C) |  | 111,404 |  |  | 34,853 |  |  | 61,973 |  |  | 14,578 |  |  | — |
Total |  | $ | 672,842 |  |  | $ | 162,791 |  |  | $ | 136,723 |  |  | $ | 373,328 |  |  | $ | — |

(A)Excludes unused line of credit commitments to our portfolio companies in the aggregate principal amount of $7.2 million.
(B)Principal balance of borrowings outstanding under our Credit Facility, based on the maturity date following the current contractual revolving period end date.
(C)Includes interest payments due on our Credit Facility and the Notes, as applicable. The amount of interest payments calculated for purposes of this table was based upon rates and outstanding balances as of September 30, 2025.
Critical Accounting Estimates
The preparation of financial statements and related disclosures in conformity with GAAP requires management to make estimates and assumptions that affect the reported consolidated amounts of assets and liabilities, including disclosure of contingent assets and liabilities at the date of the financial statements, and revenues and expenses during the period reported. Actual results could differ materially from those estimates under different assumptions or conditions. We have identified our investment valuation policy (which has been approved by our Board of Directors) as our most critical accounting policy, which is described in Note 2 — Summary of Significant Accounting Policies in the accompanying Notes to Consolidated Financial Statements included elsewhere in this Quarterly Report. Additionally, refer to Note 3 — Investments in the accompanying Notes to Consolidated Financial Statements included elsewhere in this Quarterly Report for additional information regarding fair value measurements and our application of Financial Accounting Standards Board Accounting Standards Codification Topic 820, “Fair Value Measurements and Disclosures.” We have also identified our revenue recognition policy as a critical accounting policy, which is described in Note 2 — Summary of Significant Accounting Policies in the accompanying Notes to Consolidated Financial Statements included elsewhere in this Quarterly Report.
64

Table of Contents
Investment Valuation
Credit Monitoring and Risk Rating
The Adviser monitors a wide variety of key credit statistics that provide information regarding our portfolio companies to help us assess credit quality and portfolio performance and, in some instances, are used as inputs in our valuation techniques. Generally, we, through the Adviser, participate in periodic board meetings of our portfolio companies in which we hold board seats and also require them to provide annual audited and monthly unaudited financial statements. Using these statements or comparable information and board discussions, the Adviser calculates and evaluates certain credit statistics.
The Adviser risk rates all of our investments in debt securities. The Adviser does not risk rate equity securities. For loans that have been rated by a SEC-registered Nationally Recognized Statistical Rating Organization (“NRSRO”), the Adviser generally uses the average of two corporate level NRSRO’s risk ratings for such security. For all other debt securities, the Adviser uses a proprietary risk rating system. While the Adviser seeks to mirror the NRSRO systems, we cannot provide any assurance that the Adviser’s risk rating system will provide the same risk rating as an NRSRO for these securities. The Adviser’s risk rating system is used to estimate the probability of default on debt securities and the expected loss, if there is a default. The Adviser’s risk rating system uses a scale of 0 to >10, with >10 being the lowest probability of default. It is the Adviser’s understanding that most debt securities of Lower Middle Market companies do not exceed the grade of BBB on an NRSRO scale, so there would be no debt securities in the Lower Middle Market that would meet the definition of AAA, AA or A. Therefore, the Adviser’s scale begins with the designation >10 as the best risk rating which may be equivalent to a BBB from an NRSRO; however, no assurance can be given that a >10 on the Adviser’s scale is equal to a BBB or Baa2 on an NRSRO scale. The Adviser’s risk rating system covers both qualitative and quantitative aspects of the business and the securities we hold.
The following table reflects risk ratings for all loans in our portfolio as of September 30, 2025 and March 31, 2025:

Rating |  | September 30, 2025 |  | March 31, 2025
Highest |  | 10.0 |  | 9.0
Average |  | 7.4 |  | 7.0
Weighted-average |  | 7.9 |  | 7.7
Lowest |  | 4.0 |  | 3.0

Tax Status
We intend to continue to maintain our qualification as a RIC under Subchapter M of the Code for U.S. federal income tax purposes. As a RIC, we generally are not subject to U.S. federal income tax on the portion of our taxable income and gains distributed to our stockholders. To maintain our qualification as a RIC, we must maintain our status as a BDC and meet certain source-of-income and asset diversification requirements. In addition, to qualify to be taxed as a RIC, we must distribute to stockholders at least 90% of our Investment Company Taxable Income, determined without regard to the dividends paid deduction. Our policy generally is to make distributions to our stockholders in an amount up to 100% of Investment Company Taxable Income. We may retain some or all of our net long-term capital gains, if any, and designate them as deemed distributions, or distribute such gains to stockholders in cash. See “— Liquidity and Capital Resources — Distributions and Dividends to Stockholders.”
In an effort to limit federal excise taxes, we have to distribute to stockholders, during each calendar year, an amount close to the sum of: (1) 98% of our ordinary income for the calendar year, (2) 98.2% of our net capital gains (both long-term and short-term), if any, for the one-year period ending on October 31 of the calendar year, and (3) any income realized, but not distributed, in the preceding period (to the extent that income tax was not imposed on such amounts), less certain reductions, as applicable. Under the RIC Modernization Act, we are permitted to carryforward any capital losses that we may incur for an unlimited period, and such capital loss carryforwards will retain their character as either short-term or long-term capital losses.
Recent Accounting Pronouncements
Refer to Note 2 — Summary of Significant Accounting Policies in the accompanying Notes to Consolidated Financial Statements included elsewhere in this Quarterly Report for a description of recent accounting pronouncements.
65

Table of Contents
ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK
Market risk includes risks that arise from changes in interest rates, foreign currency exchange rates, commodity prices, equity prices and other market changes that affect market sensitive instruments. The prices of securities held by us may decline in response to certain events, including those directly involving the companies whose securities are owned by us; conditions affecting the general economy; overall market changes; local, regional or global political, social or economic instability; and interest rate fluctuations.
The primary risk we believe we are exposed to is interest rate risk. Because we borrow money to make investments, our net investment income is dependent upon the difference between the rates at which we borrow funds, such as under our Credit Facility (which is variable) and our unsecured notes (which are fixed), and the rates at which we invest those funds. As a result, there can be no assurance that a significant change in market interest rates will not have a material adverse effect on our net investment income. We use a combination of debt and equity capital to finance our investing activities. We may use interest rate risk management techniques to limit our exposure to interest rate fluctuations. Such techniques may include various interest rate hedging activities to the extent permitted by the 1940 Act.
We target to have approximately 90% of the loans in our portfolio at variable rates or variable rates with a floor mechanism, and approximately up to 10% at fixed rates. As of September 30, 2025 and March 31, 2025, all of our variable-rate loans had rates associated with the current 30-day SOFR rate, and our total debt investment portfolio consisted of the following breakdown based on the principal balance:

Rates: |  | September 30, 2025 |  | March 31, 2025
Variable rates with a floor |  | 100.0 | % |  | 100.0 | %
Fixed rates |  | — | % |  | — | %
Total |  | 100.0 | % |  | 100.0 | %

There have been no material changes in the quantitative and qualitative market risk disclosures during the six months ended September 30, 2025 from those included in our Annual Report.
ITEM 4. CONTROLS AND PROCEDURES.
a)Evaluation of Disclosure Controls and Procedures
As of September 30, 2025 (the end of the period covered by this report), we, including our chief executive officer and chief financial officer, evaluated the effectiveness and design and operation of our disclosure controls and procedures. Based on that evaluation, our management, including the chief executive officer and chief financial officer, concluded that our disclosure controls and procedures were effective at a reasonable assurance level in timely alerting management, including the chief executive officer and chief financial officer, of material information about us required to be included in periodic SEC filings. However, in evaluation of the disclosure controls and procedures, management recognized that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives, and management necessarily was required to apply its judgment in evaluating the cost-benefit relationship of possible controls and procedures.
b)Changes in Internal Control over Financial Reporting
There were no changes in internal controls for the three months ended September 30, 2025 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.
66

Table of Contents
PART II—OTHER INFORMATION
ITEM 1. LEGAL PROCEEDINGS.
From time to time, we may become involved in various investigations, claims and legal proceedings that arise in the ordinary course of our business. Furthermore, third parties may try to seek to impose liability on us in connection with the activities of our portfolio companies. While we do not expect that the resolution of these matters, if they arise, would materially affect our business, financial condition, results of operations or cash flows, resolution will be subject to various uncertainties and could result in the expenditure of significant financial and managerial resources. We are not currently subject to any material legal proceedings, nor, to our knowledge, is any material legal proceeding threatened against us.
ITEM 1A. RISK FACTORS.
Our business is subject to certain risks and events that, if they occur, could adversely affect our financial condition and results of operations and the trading price of our securities. For a discussion of these risks, please refer to the section captioned “Item 1A. Risk Factors” in Part I of our Annual Report on Form 10-K for the fiscal year ended March 31, 2025, as filed with the SEC on May 13, 2025. The risks described in our Annual Report are not the only risks we face. Additional risks and uncertainties not currently known to us or that we currently deem to be immaterial also may materially and adversely affect our business, financial condition and/or operating results.
ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS.
Not applicable.
ITEM 3. DEFAULTS UPON SENIOR SECURITIES.
Not applicable.
ITEM 4. MINE SAFETY DISCLOSURES.
Not applicable.
ITEM 5. OTHER INFORMATION.
During the three months ended September 30, 2025, none of our officers or directors adopted or terminated any contract, instruction or written plan for the purchase or sale of our securities that was intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) ("Rule 10b5-1 trading arrangement") or any “non-Rule 10b5-1 trading arrangement.”
67

ITEM 6. EXHIBITS
See the exhibit index.

Exhibit |  | Description
3.1 |  | Amended and Restated Certificate of Incorporation, incorporated by reference to Exhibit A.2 to Pre-Effective Amendment No. 1 to the Registration Statement on Form N-2 (File No. 333-123699), filed May 13, 2005.
3.2 |  | Second Amended and Restated Bylaws, incorporated by reference to Exhibit 3.1 to the Current Report on Form 8-K (File No. 814-00704), filed May 15, 2020.
4.1 |  | Specimen Stock Certificate, incorporated by reference to Exhibit d to Pre-Effective Amendment No. 3 to the Registration Statement on Form N-2 (File No. 333-123699), filed June 21, 2005.
4.2 |  | Indenture, dated as of May 22, 2020, between Gladstone Investment Corporation and UMB Bank, National Association, as trustee incorporated by reference to Exhibit 4.1 to the Current Report on Form 8-K (File No. 814-00704), filed May 22, 2020.
4.3 |  | Second Supplemental Indenture between Gladstone Investment Corporation and UMB Bank, National Association, dated as of March 2, 2021, incorporated by reference to Exhibit 4.1 to the Current Report on Form 8-K (File No. 814-00704), filed March 2, 2021.
4.4 |  | Third Supplemental Indenture between Gladstone Investment Corporation and UMB Bank, National Association, dated as of August 18, 2021, incorporated by reference to Exhibit 4.1 to the Current Report on Form 8-K (File No. 814-00704), filed August 18, 2021.
4.5 |  | Fourth Supplemental Indenture between Gladstone Investment Corporation and UMB Bank, National Association, dated as of May 31, 2023, incorporated by reference to Exhibit 4.1 to the Current Report on Form 8-K (File No. 814-00704), filed May 31, 2023.
4.6 |  | Fifth Supplemental Indenture between Gladstone Investment Corporation and UMB Bank, National Association, dated as of December 17, 2024, incorporated by reference to Exhibit 4.1 to the Current Report on Form 8-K (File No. 814-00704), filed December 17, 2024.
31.1* |  | Certification of Chief Executive Officer pursuant to section 302 of The Sarbanes-Oxley Act of 2002.
31.2* |  | Certification of Chief Financial Officer and Treasurer pursuant to section 302 of The Sarbanes-Oxley Act of 2002.
32.1** |  | Certification of Chief Executive Officer pursuant to section 906 of The Sarbanes-Oxley Act of 2002.
32.2** |  | Certification of Chief Financial Officer and Treasurer pursuant to section 906 of The Sarbanes-Oxley Act of 2002.
101.INS*** |  | XBRL Instance Document
101.SCH*** |  | XBRL Taxonomy Extension Schema Document
101.CAL*** |  | XBRL Taxonomy Extension Calculation Linkbase Document
101.LAB*** |  | XBRL Taxonomy Extension Label Linkbase Document
101.PRE*** |  | XBRL Taxonomy Extension Presentation Linkbase Document
101.DEF*** |  | XBRL Definition Linkbase
104 |  | Cover Page Interactive Data File (formatted in iXBRL and contained in Exhibit 101)

______________________

* |  | Filed herewith
** |  | Furnished herewith
*** |  | Attached as Exhibit 101 to this Quarterly Report on Form 10-Q are the following materials, formatted in Inline eXtensible Business Reporting Language (iXBRL): (i) the Consolidated Statements of Assets and Liabilities as of September 30, 2025 and March 31, 2025, (ii) the Consolidated Statements of Operations for the three and six months ended September 30, 2025 and 2024, (iii) the Consolidated Statements of Changes in Net Assets for the three and six months ended September 30, 2025 and 2024, (iv) the Consolidated Statements of Cash Flows for the six months ended September 30, 2025 and 2024, (v) the Consolidated Schedules of Investments as of September 30, 2025 and March 31, 2025, and (vi) the Notes to Consolidated Financial Statements.

All other exhibits for which provision is made in the applicable regulations of the SEC are not required under the related instruction or are inapplicable and therefore have been omitted.
68

Table of Contents
SIGNATURE
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

GLADSTONE INVESTMENT CORPORATION |
By: | /s/ Taylor Ritchie |
| Taylor Ritchie |
| Chief Financial Officer and Treasurer |
| (principal financial and accounting officer) |

Date: November 4, 2025
69