{"url_path":"/sec/cik-0002082559/10-q/2026/cover-page","section_key":"cover-page","section_title":"Cover Page","topic":"sec","document":{"doc_type":"10-Q","doc_date":"2026-05-15","source_url":"https://www.sec.gov/Archives/edgar/data/2082559/0002082559-26-000051-index.html","accession_number":"0002082559-26-000051","cik":"0002082559","ticker":null,"issuer_name":"Golub Capital Private Income Fund I","edgar_url":"https://www.sec.gov/Archives/edgar/data/2082559/0002082559-26-000051-index.html","primary_entity_key":"0002082559","primary_entity_name":"Golub Capital Private Income Fund I"},"word_count":2027,"has_tables":true,"body_markdown":"gpifi-20260331\nfalse2026Q20002082559September 3011xbrli:sharesiso4217:USDiso4217:USDxbrli:sharesxbrli:puregpifi:investorgpifi:componentiso4217:CADiso4217:EURiso4217:GBPgpifi:promissoryNote00020825592025-10-012026-03-3100020825592026-05-1500020825592026-03-3100020825592026-01-012026-03-3100020825592025-12-302026-03-310002082559us-gaap:CommonStockMember2025-12-290002082559us-gaap:AdditionalPaidInCapitalMember2025-12-290002082559us-gaap:RetainedEarningsMember2025-12-2900020825592025-12-290002082559us-gaap:CommonStockMember2025-12-302026-03-310002082559us-gaap:AdditionalPaidInCapitalMember2025-12-302026-03-310002082559us-gaap:RetainedEarningsMember2025-12-302026-03-310002082559us-gaap:CommonStockMember2026-03-310002082559us-gaap:AdditionalPaidInCapitalMember2026-03-310002082559us-gaap:RetainedEarningsMember2026-03-310002082559us-gaap:CommonStockMember2025-12-310002082559us-gaap:AdditionalPaidInCapitalMember2025-12-310002082559us-gaap:RetainedEarningsMember2025-12-3100020825592025-12-310002082559us-gaap:CommonStockMember2026-01-012026-03-310002082559us-gaap:AdditionalPaidInCapitalMember2026-01-012026-03-310002082559us-gaap:RetainedEarningsMember2026-01-012026-03-310002082559us-gaap:RevolvingCreditFacilityMembergpifi:BANACreditFacilityMemberus-gaap:LineOfCreditMember2026-03-310002082559Signia Aerospace, LLC | Senior secured 12026-03-310002082559Signia Aerospace, LLC | Senior secured 22026-03-310002082559SMX Technologies | Senior secured2026-03-310002082559us-gaap:DebtSecuritiesMembergpifi:AerospaceDefenseSectorMember2026-03-310002082559us-gaap:DebtSecuritiesMembergpifi:AutoComponentsSectorMember2026-03-310002082559CAP-KSI Holdings, LLC | One stop 12026-03-310002082559CAP-KSI Holdings, LLC | One stop 22026-03-310002082559Denali Midco 2, LLC | One stop 12026-03-310002082559Denali Midco 2, LLC | One stop 22026-03-310002082559Denali Midco 2, LLC | One stop 32026-03-310002082559Denali Midco 2, LLC | Second lien2026-03-310002082559National Express Wash Parent Holdco, LLC | One stop 12026-03-310002082559National Express Wash Parent Holdco, LLC | One stop 22026-03-310002082559National Express Wash Parent Holdco, LLC | One stop 32026-03-310002082559Paint Intermediate III, LLC | Senior secured2026-03-310002082559us-gaap:DebtSecuritiesMembergpifi:AutomobilesSectorMember2026-03-310002082559Financial Information Technologies, LLC | One stop 12026-03-310002082559Financial Information Technologies, LLC | One stop 22026-03-310002082559us-gaap:DebtSecuritiesMembergpifi:BeveragesSectorMember2026-03-310002082559BECO Holding Company, Inc. | One stop 12026-03-310002082559BECO Holding Company, Inc. | One stop 22026-03-310002082559BECO Holding Company, Inc. | One stop 32026-03-310002082559BECO Holding Company, Inc. | One stop 42026-03-310002082559us-gaap:DebtSecuritiesMembergpifi:BuildingProductsSectorMember2026-03-310002082559us-gaap:DebtSecuritiesMembergpifi:CapitalMarketsSectorMember2026-03-310002082559us-gaap:DebtSecuritiesMemberus-gaap:ChemicalsSectorMember2026-03-310002082559BradyPLUS Holdings | Senior secured2026-03-310002082559CI (Quercus) Intermediate Holdings, LLC | One stop 12026-03-310002082559CI (Quercus) Intermediate Holdings, LLC | One stop 22026-03-310002082559CI (Quercus) Intermediate Holdings, LLC | One stop 32026-03-310002082559Dispatch Acquisition Holdings, LLC | One stop 12026-03-310002082559Dispatch Acquisition Holdings, LLC | One stop 22026-03-310002082559Gateway Services, Inc. | One stop 12026-03-310002082559Gateway Services, Inc. | One stop 22026-03-310002082559Gateway Services, Inc. | One stop 32026-03-310002082559Gateway Services, Inc. | One stop 42026-03-310002082559Gateway Services, Inc. | One stop 52026-03-310002082559Gateway Services, Inc. | One stop 62026-03-310002082559Gateway Services, Inc. | One stop 72026-03-310002082559Gateway Services, Inc. | One stop 82026-03-310002082559Kleinfelder Intermediate, LLC | One stop2026-03-310002082559OMNIA Partners, LLC | Senior secured2026-03-310002082559PT Intermediate Holdings III, LLC | One stop 12026-03-310002082559PT Intermediate Holdings III, LLC | One stop 22026-03-310002082559Radwell Parent, LLC | One stop 12026-03-310002082559Radwell Parent, LLC | One stop 22026-03-310002082559Radwell Parent, LLC | One stop 32026-03-310002082559Radwell Parent, LLC | One stop 42026-03-310002082559Radwell Parent, LLC | One stop 52026-03-310002082559us-gaap:DebtSecuritiesMembergpifi:CommercialServicesSuppliesSectorMember2026-03-310002082559Chariot Buyer, LLC | Senior secured2026-03-310002082559EagleView Technology Corporation | Senior secured2026-03-310002082559us-gaap:DebtSecuritiesMembergpifi:ConstructionEngineeringSectorMember2026-03-310002082559us-gaap:DebtSecuritiesMembergpifi:ConstructionMaterialsSectorMember2026-03-310002082559us-gaap:DebtSecuritiesMembergpifi:ConsumerFinanceSectorMember2026-03-310002082559AOT Packaging Products Acquisitionco, LLC | Senior secured2026-03-310002082559Berlin Packaging, LLC | Senior secured2026-03-310002082559Chase Intermediate | One stop 12026-03-310002082559Chase Intermediate | One stop 22026-03-310002082559Chase Intermediate | One stop 32026-03-310002082559Packaging Coordinators Midco, Inc. | One stop 12026-03-310002082559Packaging Coordinators Midco, Inc. | One stop 22026-03-310002082559Packaging Coordinators Midco, Inc. | One stop 32026-03-310002082559Packaging Coordinators Midco, Inc. | One stop 42026-03-310002082559Packaging Coordinators Midco, Inc. | One stop 52026-03-310002082559Packaging Coordinators Midco, Inc. | One stop 62026-03-310002082559Packaging Coordinators Midco, Inc. | One stop 72026-03-310002082559Technimark, LLC | Senior secured2026-03-310002082559WP Deluxe Merger Sub | Senior secured2026-03-310002082559us-gaap:DebtSecuritiesMemberus-gaap:ContainerAndPackagingSectorMember2026-03-310002082559PADI Holdco, Inc. | One stop 12026-03-310002082559PADI Holdco, Inc. | One stop 22026-03-310002082559PADI Holdco, Inc. | One stop 32026-03-310002082559PADI Holdco, Inc. | One stop 42026-03-310002082559Project Alpha Intermediate Holdings, Inc. | Senior secured2026-03-310002082559us-gaap:DebtSecuritiesMembergpifi:DiversifiedConsumerServicesSectorMember2026-03-310002082559BCPE Pequod Buyer | Senior secured2026-03-310002082559Finastra | Senior secured2026-03-310002082559First Eagle Investment Management | Senior secured 12026-03-310002082559First Eagle Investment Management | Senior secured 22026-03-310002082559Focus Financial Partners, LLC | Senior secured2026-03-310002082559GTCR Everest Borrower, LLC | Senior secured2026-03-310002082559Orion Advisor Solutions | Senior secured2026-03-310002082559OSTTRA Group, Ltd. | Senior secured2026-03-310002082559Zebra Buyer LLC | Senior secured2026-03-310002082559us-gaap:DebtSecuritiesMembergpifi:DiversifiedFinancialServicesSectorMember2026-03-310002082559Pioneer AcquisitionCo, LLC | Senior secured2026-03-310002082559Resilience Parent, LLC | Senior secured2026-03-310002082559us-gaap:DebtSecuritiesMembergpifi:ElectricUtilitiesSectorMember2026-03-310002082559Eagle Parent Corp. | Senior secured2026-03-310002082559PDI TA Holdings, Inc. | One stop 12026-03-310002082559PDI TA Holdings, Inc. | One stop 22026-03-310002082559us-gaap:DebtSecuritiesMembergpifi:FoodStaplesRetailingSectorMember2026-03-310002082559Aspire Bakeries Holdings, LLC | Senior secured2026-03-310002082559MIC GLEN LLC | Senior secured2026-03-310002082559PFI Lower MidCo, LLC | Senior secured2026-03-310002082559us-gaap:DebtSecuritiesMembergpifi:FoodProductsSectorMember2026-03-310002082559CCSL Holdings, LLC | One stop 12026-03-310002082559CCSL Holdings, LLC | One stop 22026-03-310002082559CCSL Holdings, LLC | One stop 32026-03-310002082559CCSL Holdings, LLC | One stop 42026-03-310002082559Centegix Intermediate II, LLC | One stop 12026-03-310002082559Centegix Intermediate II, LLC | One stop 22026-03-310002082559CMI Parent Inc. | One stop 12026-03-310002082559CMI Parent Inc. | One stop 22026-03-310002082559CMI Parent Inc. | One stop 32026-03-310002082559Confluent Medical Technologies, Inc. | Senior secured2026-03-310002082559NSM Top Holdings Corp. | Senior secured2026-03-310002082559Precision Medicine Group, LLC | Senior secured2026-03-310002082559Resonetics, LLC | Senior secured2026-03-310002082559us-gaap:DebtSecuritiesMembergpifi:HealthcareEquipmentSuppliesSectorMember2026-03-310002082559Acuity Eyecare Holdings, LLC | One stop2026-03-310002082559AVG Intermediate Holdings & AVG Subsidiary Holdings LLC | One stop2026-03-310002082559Datix Bidco Limited and RL Datix Holdings, Inc. | One stop 12026-03-310002082559Datix Bidco Limited and RL Datix Holdings, Inc. | One stop 22026-03-310002082559Datix Bidco Limited and RL Datix Holdings, Inc. | One stop 32026-03-310002082559Datix Bidco Limited and RL Datix Holdings, Inc. | One stop 42026-03-310002082559Hanger, Inc. | Senior secured 12026-03-310002082559Hanger, Inc. | Senior secured 22026-03-310002082559Mamba Purchaser, Inc. | Senior secured2026-03-310002082559PPV Intermediate Holdings, LLC | One stop 12026-03-310002082559PPV Intermediate Holdings, LLC | One stop 22026-03-310002082559PPV Intermediate Holdings, LLC | One stop 32026-03-310002082559PPV Intermediate Holdings, LLC | One stop 42026-03-310002082559Premise Health Holding Corp. | One stop2026-03-310002082559Signature MD, Inc. | One stop 12026-03-310002082559Signature MD, Inc. | One stop 22026-03-310002082559Signature MD, Inc. | One stop 32026-03-310002082559us-gaap:DebtSecuritiesMembergpifi:HealthcareProvidersServicesSectorMember2026-03-310002082559GHX Ultimate Parent Corporation | One stop 12026-03-310002082559GHX Ultimate Parent Corporation | One stop 22026-03-310002082559Imprivata, Inc. | Senior secured2026-03-310002082559Mediware Information Systems, Inc. | Senior secured2026-03-310002082559Netsmart Technologies, Inc. | One stop 12026-03-310002082559Netsmart Technologies, Inc. | One stop 22026-03-310002082559Netsmart Technologies, Inc. | One stop 32026-03-310002082559us-gaap:DebtSecuritiesMembergpifi:HealthcareTechnologySectorMember2026-03-310002082559BJH Holdings III Corp. | One stop 12026-03-310002082559BJH Holdings III Corp. | One stop 22026-03-310002082559Fertitta Entertainment, LLC | Senior secured2026-03-310002082559QSR Acquisition Co. | One stop 12026-03-310002082559QSR Acquisition Co. | One stop 22026-03-310002082559QSR Acquisition Co. | One stop 32026-03-310002082559Saguaro Buyer, LLC | One stop 12026-03-310002082559Saguaro Buyer, LLC | One stop 22026-03-310002082559Saguaro Buyer, LLC | One stop 32026-03-310002082559SDC Holdco, LLC | One stop2026-03-310002082559Tacala LLC | Senior secured2026-03-310002082559us-gaap:DebtSecuritiesMembergpifi:HotelsRestaurantsLeisureSectorMember2026-03-310002082559us-gaap:DebtSecuritiesMembergpifi:HouseholdDurablesSectorMember2026-03-310002082559Anova Buyer, Inc. | One stop 12026-03-310002082559Anova Buyer, Inc. | One stop 22026-03-310002082559Anova Buyer, Inc. | One stop 32026-03-310002082559us-gaap:DebtSecuritiesMembergpifi:IndustrialConglomeratesSectorMember2026-03-310002082559Acrisure, LLC | Senior secured2026-03-310002082559Alera Group, Inc. | Senior secured2026-03-310002082559Captive Resources Midco, LLC | One stop 12026-03-310002082559Captive Resources Midco, LLC | One stop 22026-03-310002082559Disco Parent | Senior secured2026-03-310002082559Galway Borrower LLC | One stop 12026-03-310002082559Galway Borrower LLC | One stop 22026-03-310002082559Galway Borrower LLC | One stop 32026-03-310002082559Galway Borrower LLC | One stop 42026-03-310002082559Galway Borrower LLC | One stop 52026-03-310002082559J.S. Held Holdings, LLC | One stop 12026-03-310002082559J.S. Held Holdings, LLC | One stop 22026-03-310002082559J.S. Held Holdings, LLC | One stop 32026-03-310002082559OneDigital Borrower LLC | Senior secured2026-03-310002082559Pareto Health Intermediate Holdings, Inc. | One stop 12026-03-310002082559Pareto Health Intermediate Holdings, Inc. | One stop 22026-03-310002082559Pareto Health Intermediate Holdings, Inc. | One stop 32026-03-310002082559People Corporation | One stop 12026-03-310002082559People Corporation | One stop 22026-03-310002082559People Corporation | One stop 32026-03-310002082559People Corporation | One stop 42026-03-310002082559us-gaap:DebtSecuritiesMemberus-gaap:InsuranceSectorMember2026-03-310002082559Delinea Inc. | One stop 12026-03-310002082559Delinea Inc. | One stop 22026-03-310002082559KnowBe4 | Senior secured2026-03-310002082559ReliaQuest Holdings, LLC | One stop 12026-03-310002082559ReliaQuest Holdings, LLC | One stop 22026-03-310002082559ReliaQuest Holdings, LLC | One stop 32026-03-310002082559UKG Inc. | Senior secured2026-03-310002082559us-gaap:DebtSecuritiesMembergpifi:ITServicesSectorMember2026-03-310002082559us-gaap:DebtSecuritiesMembergpifi:LeisureProductsSectorMember2026-03-310002082559PAS Parent Inc. | One stop 12026-03-310002082559PAS Parent Inc. | One stop 22026-03-310002082559PAS Parent Inc. | One stop 32026-03-310002082559us-gaap:DebtSecuritiesMembergpifi:LifeSciencesToolsServicesSectorMember2026-03-310002082559us-gaap:DebtSecuritiesMembergpifi:MachinerySectorMember2026-03-310002082559Project Nike Purchaser, LLC | One stop 12026-03-310002082559Project Nike Purchaser, LLC | One stop 22026-03-310002082559us-gaap:DebtSecuritiesMembergpifi:MarineSectorMember2026-03-310002082559us-gaap:DebtSecuritiesMembergpifi:MediaSectorMember2026-03-310002082559us-gaap:DebtSecuritiesMembergpifi:PersonalProductsSectorMember2026-03-310002082559Avalara, Inc. | Senior secured2026-03-310002082559Citrin Cooperman Advisors LLC | Senior secured2026-03-310002082559Dawn Bidco, LLC | Senior secured2026-03-310002082559Denali Intermediate Holdings, Inc. | One stop 12026-03-310002082559Denali Intermediate Holdings, Inc. | One stop 22026-03-310002082559Geosyntec Consultants, Inc. | Senior secured2026-03-310002082559Grant Thornton Advisors, LLC | Senior secured2026-03-310002082559Outcomes Group Holdings, Inc. | Senior secured2026-03-310002082559Teaching Company, The | Senior secured 12026-03-310002082559Teaching Company, The | Senior secured 22026-03-310002082559us-gaap:DebtSecuritiesMembergpifi:ProfessionalServicesSectorMember2026-03-310002082559Inhabit IQ Inc. | One stop 12026-03-310002082559Inhabit IQ Inc. | One stop 22026-03-310002082559Inhabit IQ Inc. | One stop 32026-03-310002082559MRI Software, LLC | One stop 12026-03-310002082559MRI Software, LLC | One stop 22026-03-310002082559MRI Software, LLC | One stop 32026-03-310002082559us-gaap:DebtSecuritiesMembergpifi:RealEstateManagementDevelopmentSectorMember2026-03-310002082559Kenan Advantage Group, Inc. | Senior secured2026-03-310002082559VRS Buyer, Inc. | Senior secured 12026-03-310002082559VRS Buyer, Inc. | Senior secured 22026-03-310002082559us-gaap:DebtSecuritiesMembergpifi:RoadRailSectorMember2026-03-310002082559Appfire Technologies, LLC | One stop 12026-03-310002082559Appfire Technologies, LLC | One stop 22026-03-310002082559Bayshore Intermediate #2, L.P. | One stop 12026-03-310002082559Bayshore Intermediate #2, L.P. | One stop 22026-03-310002082559Bottomline Technologies, Inc. | One stop2026-03-310002082559ConnectWise, LLC | Senior secured2026-03-310002082559Cyberswift | Senior secured2026-03-310002082559Diligent Corporation | One stop 12026-03-310002082559Diligent Corporation | One stop 22026-03-310002082559Diligent Corporation | One stop 32026-03-310002082559Diligent Corporation | One stop 42026-03-310002082559ECI Macola/Max Holding, LLC | Senior secured2026-03-310002082559Epicor Software Corporation | Senior secured2026-03-310002082559GS Acquisitionco, Inc. | One stop 12026-03-310002082559GS Acquisitionco, Inc. | One stop 22026-03-310002082559GS Acquisitionco, Inc. | One stop 32026-03-310002082559Hyland Software, Inc. | One stop 12026-03-310002082559Hyland Software, Inc. | One stop 22026-03-310002082559Instructure Holdings, Inc. | Senior secured2026-03-310002082559iSolved, Inc. | Senior secured2026-03-310002082559Javelin Buyer, Inc. | Senior secured2026-03-310002082559Jawbreaker Parent, Inc. | One stop 12026-03-310002082559Jawbreaker Parent, Inc. | One stop 22026-03-310002082559Jawbreaker Parent, Inc. | One stop 32026-03-310002082559Jawbreaker Parent, Inc. | One stop 42026-03-310002082559Modena Buyer, LLC | Senior secured2026-03-310002082559Obelix Parent, Inc. | One stop 12026-03-310002082559Obelix Parent, Inc. | One stop 22026-03-310002082559Pineapple German Bidco GMBH | One stop 12026-03-310002082559Pineapple German Bidco GMBH | One stop 22026-03-310002082559Pineapple German Bidco GMBH | One stop 32026-03-310002082559Pineapple German Bidco GMBH | One stop 42026-03-310002082559PING Identity Holding Corp. | Senior secured2026-03-310002082559Proofpoint, Inc. | Senior secured2026-03-310002082559Relativity Intermediate Holdco, LLC | Senior secured2026-03-310002082559Riskonnect Parent, LLC | One stop 12026-03-310002082559Riskonnect Parent, LLC | One stop 22026-03-310002082559Sapphire Bidco Oy | One stop2026-03-310002082559Striim, Inc. | One stop2026-03-310002082559Togetherwork Holdings, LLC | One stop 12026-03-310002082559Togetherwork Holdings, LLC | One stop 22026-03-310002082559Togetherwork Holdings, LLC | One stop 32026-03-310002082559Trintech, Inc. | One stop 12026-03-310002082559Trintech, Inc. | One stop 22026-03-310002082559Trintech, Inc. | One stop 32026-03-310002082559Viper Bidco, Inc. | One stop 12026-03-310002082559Viper Bidco, Inc. | One stop 22026-03-310002082559Viper Bidco, Inc. | One stop 32026-03-310002082559Viper Bidco, Inc. | One stop 42026-03-310002082559us-gaap:DebtSecuritiesMembergpifi:SoftwareSectorMember2026-03-310002082559Ashco, LLC | Senior secured2026-03-310002082559Med Parentco, LP | Senior secured2026-03-310002082559us-gaap:DebtSecuritiesMembergpifi:SpecialtyRetailSectorMember2026-03-310002082559us-gaap:DebtSecuritiesMembergpifi:TransportationInfrastructureSectorMember2026-03-310002082559S.J. Electro Systems, LLC | Senior secured 12026-03-310002082559S.J. Electro Systems, LLC | Senior secured 22026-03-310002082559S.J. Electro Systems, LLC | Senior secured 32026-03-310002082559us-gaap:DebtSecuritiesMembergpifi:WaterUtilitiesSectorMember2026-03-310002082559us-gaap:DebtSecuritiesMember2026-03-310002082559us-gaap:EquitySecuritiesMembergpifi:AutomobilesSectorMember2026-03-310002082559BECO Holding Company, Inc. | Preferred stock2026-03-310002082559BECO Holding Company, Inc. | LP interest2026-03-310002082559us-gaap:EquitySecuritiesMembergpifi:BuildingProductsSectorMember2026-03-310002082559CI (Quercus) Intermediate Holdings, LLC | LP interest2026-03-310002082559PT Intermediate Holdings III, LLC | LLC interest2026-03-310002082559us-gaap:EquitySecuritiesMembergpifi:CommercialServicesSuppliesSectorMember2026-03-310002082559us-gaap:EquitySecuritiesMemberus-gaap:ContainerAndPackagingSectorMember2026-03-310002082559us-gaap:EquitySecuritiesMembergpifi:DiversifiedConsumerServicesSectorMember2026-03-310002082559us-gaap:EquitySecuritiesMembergpifi:FoodStaplesRetailingSectorMember2026-03-310002082559CCSL Holdings, LLC | LP interest2026-03-310002082559Centegix Intermediate II, LLC | LLC interest2026-03-310002082559us-gaap:EquitySecuritiesMembergpifi:HealthcareEquipmentSuppliesSectorMember2026-03-310002082559us-gaap:EquitySecuritiesMembergpifi:HealthcareProvidersServicesSectorMember2026-03-310002082559us-gaap:EquitySecuritiesMembergpifi:HotelsRestaurantsLeisureSectorMember2026-03-310002082559us-gaap:EquitySecuritiesMembergpifi:IndustrialConglomeratesSectorMember2026-03-310002082559PAS Parent Inc. | LP interest 12026-03-310002082559PAS Parent Inc. | LP interest 22026-03-310002082559us-gaap:EquitySecuritiesMembergpifi:LifeSciencesToolsServicesSectorMember2026-03-310002082559us-gaap:EquitySecuritiesMembergpifi:RealEstateManagementDevelopmentSectorMember2026-03-310002082559Bayshore Intermediate #2, L.P. | LP interest2026-03-310002082559Claroty, Ltd. | Preferred stock2026-03-310002082559Diligent Corporation | Preferred stock 12026-03-310002082559Diligent Corporation | Preferred stock 22026-03-310002082559GS Acquisitionco, Inc. | Preferred stock 12026-03-310002082559GS Acquisitionco, Inc. | LP interest2026-03-310002082559GS Acquisitionco, Inc. | Preferred stock 22026-03-310002082559GS Acquisitionco, Inc. | Preferred stock 32026-03-310002082559Riskonnect Parent, LLC | LP interest2026-03-310002082559Riskonnect Parent, LLC | Preferred stock 12026-03-310002082559Riskonnect Parent, LLC | Preferred stock 22026-03-310002082559Riskonnect Parent, LLC | Preferred stock 32026-03-310002082559Striim, Inc. | Warrant2026-03-310002082559Togetherwork Holdings, LLC | LP interest2026-03-310002082559us-gaap:EquitySecuritiesMembergpifi:SoftwareSectorMember2026-03-310002082559us-gaap:EquitySecuritiesMember2026-03-310002082559Morgan Stanley Institutional Liquidity Funds - Treasury Portfolio Institutional Share Class (CUSIP 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OF CONTENTS](#i3071db2937c547b9a495052d2f502269_13)\n\n______________________________________________________________________________________________________\n\nUNITED STATES\n\nSECURITIES AND EXCHANGE COMMISSION\n\nWASHINGTON, DC 20549\n\n______________________________________________________________________________________________________ \n\nFORM 10-Q\n\nþ                 QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF\n\nTHE SECURITIES EXCHANGE ACT OF 1934\n\nFor the Quarterly Period Ended March 31, 2026\n\nOR\n\no         TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF\n\nTHE SECURITIES EXCHANGE ACT OF 1934\n\nFor the transition period from _____ to _____\n\nCommission File Number 814-01946\n\nGolub Capital Private Income Fund I\n\n(Exact name of registrant as specified in its charter)\n\nDelaware39-3589451\n\n(State or other jurisdiction of incorporation or organization)  (I.R.S. Employer Identification No.)\n\n200 Park Avenue, 25th Floor\n\nNew York, NY 10166\n\n(Address of principal executive offices)\n\n(212) 750-6060\n\n(Registrant's telephone number, including area code)\n\nSecurities registered pursuant to Section 12(b) of the Securities Exchange Act of 1934:\n\nTitle of each classTrading SymbolName of each exchange on which registered\n\nNoneNoneNone\n\nIndicate 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 þ   No o\n\nIndicate 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 during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).   Yes ☑ No   o\n\nIndicate 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 definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act.\n\n☐\nLarge accelerated filer\n☐\nAccelerated filer\n\n☑\nNon-accelerated filer\n☐\nSmaller reporting company\n\n☑Emerging growth company\n\nIf 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\n\nIndicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes  o  No þ\n\nAs of May 15, 2026, the Registrant had 8,333,851 common shares of beneficial interest, $0.01 par value, outstanding. Common shares of beneficial interest outstanding exclude May 1, 2026 subscriptions since the offering price is not yet finalized at this time.\n\n1\n\n[TABLE OF CONTENTS](#i3071db2937c547b9a495052d2f502269_13)\n\nPart I. Financial Information"}