10-Q 1 mrcc-20240331.htm 10-Q mrcc-20240331
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(Revolver), Senior Secured Loans2024-03-310001512931Brickell Bay Acquisition Corp., Senior Secured Loans2024-03-310001512931Caravel Autism Health, LLC, Senior Secured Loans 12024-03-310001512931Caravel Autism Health, LLC, Senior Secured Loans 22024-03-310001512931Caravel Autism Health, LLC (Revolver), Senior Secured Loans2024-03-310001512931Dorado Acquisition, Inc., Senior Secured Loans 12024-03-310001512931Dorado Acquisition, Inc., Senior Secured Loans 22024-03-310001512931Dorado Acquisition, Inc. (Revolver), Senior Secured Loans2024-03-310001512931Forest Buyer, LLC, Senior Secured Loans2024-03-310001512931Forest Buyer, LLC (Delayed Draw), Senior Secured Loans2024-03-310001512931Forest Buyer, LLC (Revolver), Senior Secured Loans2024-03-310001512931INH Buyer, Inc., Senior Secured Loans2024-03-310001512931KL Moon Acquisition, LLC (fka Spectrum Science Communications, LLC), Senior Secured Loans 12024-03-310001512931KL Moon Acquisition, LLC (fka Spectrum Science Communications, LLC), Senior Secured Loans 22024-03-310001512931KL Moon Acquisition, LLC (fka Spectrum Science Communications, LLC) (Delayed Draw), Senior Secured Loans2024-03-310001512931KL Moon Acquisition, LLC (fka Spectrum Science Communications, LLC) (Revolver), Senior Secured Loans2024-03-310001512931NationsBenefits, LLC, Senior Secured Loans 12024-03-310001512931NationsBenefits, LLC, Senior Secured Loans 22024-03-310001512931NationsBenefits, LLC, Senior Secured Loans 32024-03-310001512931NationsBenefits, LLC, Senior Secured Loans, Revolver2024-03-310001512931NQ PE Project Colosseum Midco Inc., Senior Secured Loans2024-03-310001512931NQ PE Project Colosseum Midco Inc., Senior Secured Loans, Delayed Draw2024-03-310001512931NQ PE Project Colosseum Midco Inc., Senior Secured Loans, Revolver2024-03-310001512931Seran BioScience, LLC, Senior Secured Loans 12024-03-310001512931Seran BioScience, LLC, Senior Secured Loans 22024-03-310001512931Seran BioScience, LLC, Senior Secured Loans 32024-03-310001512931Seran BioScience, LLC, Senior Secured Loans, Revolver2024-03-310001512931TigerConnect, Inc., Senior Secured Loans2024-03-310001512931TigerConnect, Inc., Senior Secured Loans, Delayed Draw2024-03-310001512931TigerConnect, Inc., Senior Secured Loans, Revolver2024-03-310001512931Vero Biotech Inc., Senior Secured Loans2024-03-310001512931Whistler Parent Holdings III, Inc., Senior Secured Loans 12024-03-310001512931Whistler Parent Holdings III, Inc., Senior Secured Loans 22024-03-310001512931Whistler Parent 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LLC, Senior Secured Loans2024-03-310001512931Chess.com, LLC (Revolver), Senior Secured Loans2024-03-310001512931Crownpeak Technology, Inc., Senior Secured Loans 12024-03-310001512931Crownpeak Technology, Inc., Senior Secured Loans 22024-03-310001512931Crownpeak Technology, Inc., Senior Secured Loans 32024-03-310001512931Crownpeak Technology, Inc., Senior Secured Loans 42024-03-310001512931Crownpeak Technology, Inc. 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(Revolver), Senior Secured Loans2024-03-310001512931HS4 Acquisitionco, Inc., Senior Secured Loans2024-03-310001512931HS4 Acquisitionco, Inc. (Revolver), Senior Secured Loans2024-03-310001512931iCIMS, Inc., Senior Secured Loans2024-03-310001512931Kingsley Gate Partners, LLC, Senior Secured Loans 12024-03-310001512931Kingsley Gate Partners, LLC, Senior Secured Loans 22024-03-310001512931Kingsley Gate Partners, LLC (Delayed Draw), Senior Secured Loans2024-03-310001512931Kingsley Gate Partners, LLC (Revolver), Senior Secured Loans2024-03-310001512931Prototek LLC, Senior Secured Loans2024-03-310001512931Prototek LLC (Revolver), Senior Secured Loans2024-03-310001512931Relativity ODA LLC, Senior Secured Loans2024-03-310001512931Relativity ODA LLC (Revolver), Senior Secured Loans2024-03-310001512931Security Services Acquisition Sub Corp., Senior Secured Loans 12024-03-310001512931Security Services Acquisition Sub Corp., Senior Secured Loans 22024-03-310001512931Security Services Acquisition Sub Corp., Senior Secured Loans 32024-03-310001512931Security Services Acquisition Sub Corp., Senior Secured Loans 42024-03-310001512931Security Services Acquisition Sub Corp., Senior Secured Loans 52024-03-310001512931Security Services Acquisition Sub Corp., Senior Secured Loans 62024-03-310001512931Vhagar Purchaser, LLC, Senior Secured Loans2024-03-310001512931Vhagar Purchaser, LLC (Delayed Draw), Senior Secured Loans2024-03-310001512931Vhagar Purchaser, LLC (Revolver), Senior Secured Loans2024-03-310001512931VPS Holdings, LLC, Senior Secured Loans 12024-03-310001512931VPS Holdings, LLC, Senior Secured Loans 22024-03-310001512931VPS Holdings, LLC (Revolver), Senior Secured Loans2024-03-310001512931us-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:SeniorLoansMembermrcc:BusinessServicesSectorMember2024-03-310001512931Express Wash Acquisition Company, LLC, Senior Secured Loans 12024-03-310001512931Express Wash Acquisition Company, LLC, Senior Secured Loans 22024-03-310001512931Express Wash Acquisition Company, LLC (Revolver), Senior Secured Loans2024-03-310001512931Kar Wash Holdings, LLC, Senior Secured Loans 12024-03-310001512931Kar Wash Holdings, LLC, Senior Secured Loans 22024-03-310001512931Kar Wash Holdings, LLC, Senior Secured Loans2024-03-310001512931Kar Wash Holdings, LLC (Revolver), Senior Secured Loans2024-03-310001512931mrcc:ServicesConsumerSectorMemberus-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:SeniorLoansMember2024-03-310001512931American Broadband and Telecommunications Company LLC (Delayed Draw), Senior Secured Loans2024-03-310001512931American Broadband and Telecommunications Company LLC (Revolver), Senior Secured Loans2024-03-310001512931Calabrio, Inc., Senior Secured Loans 12024-03-310001512931Calabrio, Inc., Senior Secured Loans 22024-03-310001512931Calabrio, Inc. (Revolver), Senior Secured Loans2024-03-310001512931mrcc:TelecommunicationsMemberus-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:SeniorLoansMember2024-03-310001512931Epika Fleet Services, Inc., Senior Secured Loans 12024-03-310001512931Epika Fleet Services, Inc., Senior Secured Loans 22024-03-310001512931Epika Fleet Services, Inc., Senior Secured Loans, Delayed Draw2024-03-310001512931Epika Fleet Services, Inc., Senior Secured Loans, Revolver2024-03-310001512931us-gaap:TransportationSectorMemberus-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:SeniorLoansMember2024-03-310001512931Nearly Natural, Inc., Senior Secured Loans 12024-03-310001512931Nearly Natural, Inc., Senior Secured Loans 22024-03-310001512931Nearly Natural, Inc., Senior Secured Loans 32024-03-310001512931Nearly Natural, Inc., Senior Secured Loans 42024-03-310001512931Nearly Natural, Inc. (Revolver), Senior Secured Loans2024-03-310001512931mrcc:WholesaleMemberus-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:SeniorLoansMember2024-03-310001512931us-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:SeniorLoansMember2024-03-310001512931ASG II, LLC, Unitranche Secured Loans2024-03-310001512931ASG II, LLC (Delayed Draw), Unitranche Secured Loans2024-03-310001512931Onit, Inc., Unitranche Secured Loans2024-03-310001512931us-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:UnitrancheDebtMembermrcc:BusinessServicesSectorMember2024-03-310001512931VB E1, LLC, Unitranche Secured Loans2024-03-310001512931mrcc:TelecommunicationsMemberus-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:UnitrancheDebtMember2024-03-310001512931us-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:UnitrancheDebtMember2024-03-310001512931MoneyLion, Inc., Junior Secured Loans2024-03-310001512931mrcc:Banking1Memberus-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:JuniorLoansMember2024-03-310001512931Thrasio, LLC, Junior Secured Loans 12024-03-310001512931Thrasio, LLC, Junior Secured Loans 22024-03-310001512931us-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:JuniorLoansMembermrcc:ConsumerGoodsDurableSectorMember2024-03-310001512931Florida East Coast Industries, LLC, Junior Secured Loans2024-03-310001512931Witkoff/Monroe 700 JV LLC, Junior Secured Loans 12024-03-310001512931Witkoff/Monroe 700 JV LLC, Junior Secured Loans 22024-03-310001512931Witkoff/Monroe 700 JV LLC (Delayed Draw), Junior Secured Loans2024-03-310001512931us-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:JuniorLoansMembermrcc:FireRealEstateSectorMember2024-03-310001512931Arcstor Midco, LLC, Junior Secured Loans 12024-03-310001512931Arcstor Midco, LLC, Junior Secured Loans 22024-03-310001512931Arcstor Midco, LLC, Junior Secured Loans 32024-03-310001512931mrcc:HighTechIndustriesSectorMemberus-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:JuniorLoansMember2024-03-310001512931Vice Acquisition Holdco, LLC, Junior Secured Loans 12024-03-310001512931Vice Acquisition Holdco, LLC, Junior Secured Loans 22024-03-310001512931Vice Acquisition Holdco, LLC, Junior Secured Loans 32024-03-310001512931Vice Acquisition Holdco, LLC, Junior Secured Loans 42024-03-310001512931Vice Acquisition Holdco, LLC, Junior Secured Loans 52024-03-310001512931Vice Acquisition Holdco, LLC, Junior Secured Loans 62024-03-310001512931Vice Acquisition Holdco, LLC, Junior Secured Loans 72024-03-310001512931Vice Acquisition Holdco, LLC, Junior Secured Loans 82024-03-310001512931mrcc:MediaBroadcastingSubscriptionMemberus-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:JuniorLoansMember2024-03-310001512931Forman Mills, Inc., Junior Secured Loans2024-03-310001512931us-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:JuniorLoansMemberus-gaap:RetailSectorMember2024-03-310001512931Education Corporation of America, Junior Secured Loans2024-03-310001512931mrcc:ServicesConsumerSectorMemberus-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:JuniorLoansMember2024-03-310001512931us-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:JuniorLoansMember2024-03-310001512931Born To Run, LLC, Equity Securities, Class A units2024-03-310001512931Lifted Trucks Holdings, LLC, Equity Securities, Class A units2024-03-310001512931us-gaap:AutomotiveSectorMemberus-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:EquitySecuritiesMember2024-03-310001512931MV Receivables II, LLC, Equity Securities, Common units2024-03-310001512931MV Receivables II, LLC, Equity Securities, Warrant2024-03-310001512931mrcc:Banking1Memberus-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:EquitySecuritiesMember2024-03-310001512931Valudor Products LLC, Equity Securities, Class A-1 units2024-03-310001512931us-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:EquitySecuritiesMembermrcc:ChemicalsPlasticsRubberMember2024-03-310001512931Independence Buyer, Inc., Equity Securities, Class A units2024-03-310001512931us-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:EquitySecuritiesMembermrcc:ConsumerGoodsDurableSectorMember2024-03-310001512931MEI Buyer LLC, Equity Securities, Common stock2024-03-310001512931us-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:ConstructionSectorMemberus-gaap:EquitySecuritiesMember2024-03-310001512931Quest Resource Management Group, LLC, Equity Securities, Warrant 12024-03-310001512931Quest Resource Management Group, LLC, Equity Securities, Warrant 22024-03-310001512931us-gaap:InvestmentUnaffiliatedIssuerMembermrcc:EnvironmentalIndustriesMemberus-gaap:EquitySecuritiesMember2024-03-310001512931Binah Capital Group, Inc. (fka PKS Holdings, LLC), Equity Securities, Common Stock2024-03-310001512931J2 BWA Funding LLC, Equity Securities, Profit sharing2024-03-310001512931us-gaap:InvestmentUnaffiliatedIssuerMembermrcc:FireFinanceSectorMemberus-gaap:EquitySecuritiesMember2024-03-310001512931Residential Homes for Rent LLC, Equity Securities, Series A preferred units2024-03-310001512931Residential Homes for Rent LLC, Warrants2024-03-310001512931Witkoff/Monroe 700 JV LLC, Equity Securities, Preferred units2024-03-310001512931us-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:EquitySecuritiesMembermrcc:FireRealEstateSectorMember2024-03-310001512931Bluesight, Inc., Equity Securities, Class A preferred units2024-03-310001512931Bluesight, Inc. , Equity Securities, Class B common units2024-03-310001512931Dorado Acquisition, Inc., Equity Securities, Class A-1 units2024-03-310001512931Dorado Acquisition, Inc., Equity Securities, Class A-2 units2024-03-310001512931Forest Buyer, LLC, Equity Securities, Class A units2024-03-310001512931Forest Buyer, LLC, Equity Securities, Class B units2024-03-310001512931KL Moon Acquisition, LLC (fka Spectrum Science Communications, LLC), Equity Securities2024-03-310001512931NationsBenefits, LLC, Equity Securities, Series B units2024-03-310001512931NationsBenefits, LLC, Equity Securities, Common units2024-03-310001512931NQ PE Project Colosseum Midco Inc., Equity Securities, Common units2024-03-310001512931Seran BioScience, LLC, Equity Securities, Common units2024-03-310001512931Vero Biotech Inc., Equity Securities, Warrant2024-03-310001512931us-gaap:HealthcareSectorMemberus-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:EquitySecuritiesMember2024-03-310001512931Amelia Holding II, LLC, Equity Securities, Warrant2024-03-310001512931Arcserve Cayman Opco LP (fka Arcstor Midco, LLC), Equity Securities, Class A units2024-03-310001512931Arcserve Cayman Opco LP (fka Arcstor Midco, LLC), Equity Securities, Class B units2024-03-310001512931Drawbridge Partners, LLC, Equity Securities, Class A-1 units2024-03-310001512931Planful, Inc., Equity Securities, Class A units2024-03-310001512931Planful, Inc., Equity Securities, Class B units2024-03-310001512931Recorded Future, Inc, Equity Securities Class A units2024-03-310001512931Sparq Holdings, Inc., Equity Securities, Common stock2024-03-310001512931mrcc:HighTechIndustriesSectorMemberus-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:EquitySecuritiesMember2024-03-310001512931Equine Network, LLC, Equity Securities, Class A units2024-03-310001512931mrcc:HotelsGamingLeisureMemberus-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:EquitySecuritiesMember2024-03-310001512931AdTheorent Holding Company, Inc, Equity Securities, Common stock2024-03-310001512931InMobi Pte, Ltd, Equity Securities, Warrant2024-03-310001512931Relevate Health Group, LLC , Equity Securities, Preferred units2024-03-310001512931Relevate Health Group, LLC , Equity Securities, Class B common units2024-03-310001512931Spherix Global Inc., Equity Securities, Class A units2024-03-310001512931XanEdu Publishing, Inc., Equity Securities, Class A units2024-03-310001512931us-gaap:InvestmentUnaffiliatedIssuerMembermrcc:MediaAdvertisingPrintingPublishingMemberus-gaap:EquitySecuritiesMember2024-03-310001512931Vice Acquisition Holdco, LLC (fka Vice Group Holding Inc.), Equity Securities, Class A units2024-03-310001512931mrcc:MediaBroadcastingSubscriptionMemberus-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:EquitySecuritiesMember2024-03-310001512931Attom Intermediate Holdco, LLC, Equity Securities, Class A units2024-03-310001512931Chess.com, LLC, Equity Securities, Class A units2024-03-310001512931V10 Entertainment, Inc. , Equity Securities, Common units2024-03-310001512931mrcc:MediaDiversifiedProductionMemberus-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:EquitySecuritiesMember2024-03-310001512931BLST Operating Company, LLC, Equity Securities, Class A units2024-03-310001512931us-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:RetailSectorMemberus-gaap:EquitySecuritiesMember2024-03-310001512931APCO Worldwide, Inc., Equity Securities, Class A voting common stock2024-03-310001512931us-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:EquitySecuritiesMembermrcc:BusinessServicesSectorMember2024-03-310001512931Education Corporation of America - Series G Preferred Stock2024-03-310001512931Express Wash Acquisition Company, LLC, Equity Securities, Class A common units2024-03-310001512931Express Wash Acquisition Company, LLC, Class A preferred units2024-03-310001512931Express Wash Acquisition Company, LLC, Equity Securities, Class B preferred units2024-03-310001512931Express Wash Acquisition Company, LLC, Equity Securities, Class B common units2024-03-310001512931IDIG Parent, LLC, Equity Securities, Common stock2024-03-310001512931Kar Wash Holdings, LLC 1, Equity Securities, Class A units2024-03-310001512931Kar Wash Holdings, LLC, Equity Securities, Series A Preferred Stock2024-03-310001512931mrcc:ServicesConsumerSectorMemberus-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:EquitySecuritiesMember2024-03-310001512931American Broadband and Telecommunications Company LLC, Warrants2024-03-310001512931mrcc:TelecommunicationsMemberus-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:EquitySecuritiesMember2024-03-310001512931Epika Fleet Services, Inc., Senior Preferred Stock2024-03-310001512931us-gaap:TransportationSectorMemberus-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:EquitySecuritiesMember2024-03-310001512931Nearly Natural, Inc.1, Equity Securities, Class A units2024-03-310001512931Nearly Natural, Inc. 2, Equity Securities, Class AA units2024-03-310001512931mrcc:WholesaleMemberus-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:EquitySecuritiesMember2024-03-310001512931us-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:EquitySecuritiesMember2024-03-310001512931TJ Management HoldCo LLC, Senior Secured Loans, Revolver2024-03-310001512931us-gaap:FoodAndBeverageSectorMemberus-gaap:InvestmentAffiliatedIssuerNoncontrolledMemberus-gaap:SeniorLoansMember2024-03-310001512931American Community Homes, Inc., Senior Secured Loans 12024-03-310001512931American Community Homes, Inc., Senior Secured Loans 22024-03-310001512931American Community Homes, Inc., Senior Secured Loans 32024-03-310001512931American Community Homes, Inc., Senior Secured Loans 42024-03-310001512931American Community Homes, Inc., Senior Secured Loans 52024-03-310001512931American Community Homes, Inc., Senior Secured Loans 62024-03-310001512931American Community Homes, Inc., Senior Secured Loans 72024-03-310001512931American Community Homes, Inc., Senior Secured Loans (Revolver)2024-03-310001512931HFZ Capital Group LLC, Senior Secured Loans 12024-03-310001512931HFZ Capital Group LLC, Senior Secured Loans 22024-03-310001512931MC Asset Management (Corporate), LLC, Senior Secured Loans 12024-03-310001512931MC Asset Management (Corporate), LLC, Senior Secured Loans 22024-03-310001512931Second Avenue SFR Holdings II LLC, Senior Secured Loans (Revolver) 2024-03-310001512931us-gaap:InvestmentAffiliatedIssuerNoncontrolledMemberus-gaap:SeniorLoansMembermrcc:FireRealEstateSectorMember2024-03-310001512931Mnine Holdings, Inc., Senior Secured Loans 12024-03-310001512931Mnine Holdings, Inc., Senior Secured Loans 22024-03-310001512931Mnine Holdings, Inc., Revolver, Senior Secured Loans 2024-03-310001512931us-gaap:InvestmentAffiliatedIssuerNoncontrolledMembermrcc:HighTechIndustriesSectorMemberus-gaap:SeniorLoansMember2024-03-310001512931NECB Collections, LLC, Senior Secured Loans, Revolver2024-03-310001512931mrcc:ServicesConsumerSectorMemberus-gaap:InvestmentAffiliatedIssuerNoncontrolledMemberus-gaap:SeniorLoansMember2024-03-310001512931us-gaap:InvestmentAffiliatedIssuerNoncontrolledMemberus-gaap:SeniorLoansMember2024-03-310001512931SFR Holdco, LLC, Junior Secured Loans2024-03-310001512931us-gaap:InvestmentAffiliatedIssuerNoncontrolledMemberus-gaap:JuniorLoansMembermrcc:FireRealEstateSectorMember2024-03-310001512931us-gaap:InvestmentAffiliatedIssuerNoncontrolledMemberus-gaap:JuniorLoansMember2024-03-310001512931TJ Management HoldCo LLC, Equity Securities, Common stock2024-03-310001512931us-gaap:FoodAndBeverageSectorMemberus-gaap:InvestmentAffiliatedIssuerNoncontrolledMemberus-gaap:EquitySecuritiesMember2024-03-310001512931American Community Homes, Inc., Equity Securities, Common stock2024-03-310001512931MC Asset Management (Corporate), LLC, Equity Securities2024-03-310001512931SFR Holdco, LLC, Equity Securities2024-03-310001512931us-gaap:InvestmentAffiliatedIssuerNoncontrolledMemberus-gaap:EquitySecuritiesMembermrcc:FireRealEstateSectorMember2024-03-310001512931Ascent Midco, LLC, Equity Securities, Class A units2024-03-310001512931Familia Dental Group Holdings, LLC, Equity Securities, Class A units2024-03-310001512931us-gaap:HealthcareSectorMemberus-gaap:InvestmentAffiliatedIssuerNoncontrolledMemberus-gaap:EquitySecuritiesMember2024-03-310001512931Mnine Holdings, Inc., Equity Securities, Class B units2024-03-310001512931us-gaap:InvestmentAffiliatedIssuerNoncontrolledMembermrcc:HighTechIndustriesSectorMemberus-gaap:EquitySecuritiesMember2024-03-310001512931NECB Collections, LLC, Equity Securities2024-03-310001512931mrcc:ServicesConsumerSectorMemberus-gaap:InvestmentAffiliatedIssuerNoncontrolledMemberus-gaap:EquitySecuritiesMember2024-03-310001512931us-gaap:InvestmentAffiliatedIssuerNoncontrolledMemberus-gaap:EquitySecuritiesMember2024-03-310001512931MRCC Senior Loan Fund I, LLC, Equity Securities2024-03-310001512931us-gaap:InvestmentAffiliatedIssuerControlledMemberus-gaap:EquitySecuritiesMember2024-03-310001512931mrcc:FamiliaDentalGroupHoldingsLLCMember2024-01-012024-03-310001512931mrcc:RecordedFutureIncMember2024-03-310001512931mrcc:V10EntertainmentInc.Member2024-03-310001512931mrcc:IDIGParentLLCMember2024-03-310001512931mrcc:McAssetManagementCorporateLlcCorporateMembermrcc:McAssetManagementCorporateLlcCorporateMember2021-12-310001512931mrcc:McAssetManagementCorporateLlcCorporateMembermrcc:McAssetManagementIndustrialLlcIndustrialMember2021-12-310001512931mrcc:HfzCapitalGroupLlcMember2021-12-310001512931Born To Run, LLC, Senior Secured Loans 12023-12-310001512931Born To Run, LLC, Senior Secured Loans 22023-12-310001512931Hastings Manufacturing Company, Senior Secured Loans 12023-12-310001512931Hastings Manufacturing Company, Senior Secured Loans 22023-12-310001512931Hastings Manufacturing Company, Senior Secured Loans 32023-12-310001512931Hastings Manufacturing Company (Revolver), Senior Secured Loans2023-12-310001512931Lifted Trucks Holdings, LLC, Senior Secured Loans2023-12-310001512931Lifted Trucks Holdings, LLC (Revolver), Senior Secured Loans2023-12-310001512931Panda Acquisition, LLC, Senior Secured Loans2023-12-310001512931us-gaap:AutomotiveSectorMemberus-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:SeniorLoansMember2023-12-310001512931MV Receivables II, LLC, Senior Secured Loans2023-12-310001512931StarCompliance MidCo, LLC, Senior Secured Loans 12023-12-310001512931StarCompliance MidCo, LLC, Senior Secured Loans 22023-12-310001512931StarCompliance MidCo, LLC, Senior Secured Loans 32023-12-310001512931StarCompliance MidCo, LLC (Revolver), Senior Secured Loans2023-12-310001512931mrcc:Banking1Memberus-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:SeniorLoansMember2023-12-310001512931LVF Holdings, Inc., Senior Secured Loans 12023-12-310001512931LVF Holdings, Inc., Senior Secured Loans 22023-12-310001512931LVF Holdings, Inc. (Revolver), Senior Secured Loans2023-12-310001512931us-gaap:FoodAndBeverageSectorMemberus-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:SeniorLoansMember2023-12-310001512931CGI Automated Manufacturing, LLC, Senior Secured Loans 12023-12-310001512931CGI Automated Manufacturing, LLC, Senior Secured Loans 22023-12-310001512931us-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:SeniorLoansMembermrcc:CapitalEquipmentMember2023-12-310001512931Valudor Products LLC, Senior Secured Loans 12023-12-310001512931Valudor Products LLC, Senior Secured Loans 22023-12-310001512931Valudor Products LLC, Senior Secured Loans 32023-12-310001512931Valudor Products LLC (Revolver), Senior Secured Loans2023-12-310001512931us-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:SeniorLoansMemberus-gaap:ChemicalsSectorMember2023-12-310001512931MEI Buyer LLC, Senior Secured Loans2023-12-310001512931MEI Buyer LLC (Delayed Draw), Senior Secured Loans2023-12-310001512931MEI Buyer LLC (Revolver), Senior Secured Loans2023-12-310001512931TCFIII OWL Buyer LLC, Senior Secured Loans 12023-12-310001512931TCFIII OWL Buyer LLC, Senior Secured Loans 22023-12-310001512931TCFIII OWL Buyer LLC, Senior Secured Loans 32023-12-310001512931us-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:SeniorLoansMemberus-gaap:ConstructionSectorMember2023-12-310001512931Independence Buyer, Inc., Senior Secured Loans2023-12-310001512931Independence Buyer, Inc. (Revolver), Senior Secured Loans2023-12-310001512931Recycled Plastics Industries, LLC, Senior Secured Loans2023-12-310001512931Recycled Plastics Industries, LLC (Revolver), Senior Secured Loans2023-12-310001512931us-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:SeniorLoansMembermrcc:ConsumerGoodsDurableSectorMember2023-12-310001512931The Kyjen Company, LLC, Senior Secured Loans 12023-12-310001512931The Kyjen Company, LLC, Senior Secured Loans 22023-12-310001512931The Kyjen Company, LLC (Revolver), Senior Secured Loans2023-12-310001512931Thrasio, LLC, Senior Secured Loans2023-12-310001512931mrcc:ConsumerSectorNon-DurableMemberus-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:SeniorLoansMember2023-12-310001512931Quest Resource Management Group, LLC, Senior Secured Loans 12023-12-310001512931Quest Resource Management Group, LLC, Senior Secured Loans 22023-12-310001512931Quest Resource Management Group, LLC, Senior Secured Loans 32023-12-310001512931Quest Resource Management Group, LLC, Senior Secured Loans 42023-12-310001512931us-gaap:InvestmentUnaffiliatedIssuerMembermrcc:EnvironmentalIndustriesMemberus-gaap:SeniorLoansMember2023-12-310001512931Avalara, Inc., Senior Secured Loans2023-12-310001512931Avalara, Inc. (Revolver), Senior Secured Loans2023-12-310001512931GC Champion Acquisition LLC, Senior Secured Loans 12023-12-310001512931GC Champion Acquisition LLC, Senior Secured Loans 22023-12-310001512931GC Champion Acquisition LLC, Senior Secured Loans 32023-12-310001512931J2 BWA Funding LLC (Revolver), Senior Secured Loans2023-12-310001512931Liftforward SPV II, LLC, Senior Secured Loans2023-12-310001512931W3 Monroe RE Debt LLC, Senior Secured Loans2023-12-310001512931W3 Monroe RE Debt LLC (Delayed Draw), Senior Secured Loans2023-12-310001512931us-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:SeniorLoansMembermrcc:FireFinanceSectorMember2023-12-310001512931Centaur (Palm Beach) Owner LLC and Panther National Golf Club LLC, Senior Secured Loans2023-12-310001512931Centaur (Palm Beach) Owner LLC and Panther National Golf Club LLC, Senior Secured Loans22023-12-310001512931Centaur (Palm Beach) Owner LLC and Panther National Golf Club LLC (Delayed Draw), Senior Secured Loans2023-12-310001512931Centaur (Palm Beach) Owner LLC and Panther National Golf Club LLC (Revolver), Senior Secured Loans2023-12-310001512931us-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:SeniorLoansMembermrcc:FireRealEstateSectorMember2023-12-310001512931Bluesight, Inc., Senior Secured Loans2023-12-310001512931Bluesight, Inc. (Revolver), Senior Secured Loans2023-12-310001512931Brickell Bay Acquisition Corp., Senior Secured Loans2023-12-310001512931Caravel Autism Health, LLC, Senior Secured Loans 12023-12-310001512931Caravel Autism Health, LLC, Senior Secured Loans 22023-12-310001512931Caravel Autism Health, LLC (Revolver), Senior Secured Loans2023-12-310001512931Dorado Acquisition, Inc., Senior Secured Loans 12023-12-310001512931Dorado Acquisition, Inc., Senior Secured Loans 22023-12-310001512931Dorado Acquisition, Inc. (Revolver), Senior Secured Loans2023-12-310001512931INH Buyer, Inc., Senior Secured Loans2023-12-310001512931KL Moon Acquisition, LLC (fka Spectrum Science Communications, LLC), Senior Secured Loans2023-12-310001512931KL Moon Acquisition, LLC (fka Spectrum Science Communications, LLC) (Delayed Draw), Senior Secured Loans2023-12-310001512931KL Moon Acquisition, LLC (fka Spectrum Science Communications, LLC) (Revolver), Senior Secured Loans2023-12-310001512931NationsBenefits, LLC, Senior Secured Loans 12023-12-310001512931NationsBenefits, LLC, Senior Secured Loans 22023-12-310001512931NationsBenefits, LLC, Senior Secured Loans 32023-12-310001512931NationsBenefits, LLC (Revolver), Senior Secured Loans2023-12-310001512931NQ PE Project Colosseum Midco Inc., Senior Secured Loans2023-12-310001512931NQ PE Project Colosseum Midco Inc. (Delayed Draw), Senior Secured Loans2023-12-310001512931NQ PE Project Colosseum Midco Inc. (Revolver), Senior Secured Loans2023-12-310001512931Seran BioScience, LLC, Senior Secured Loans 12023-12-310001512931Seran BioScience, LLC, Senior Secured Loans 22023-12-310001512931Seran BioScience, LLC (Delayed Draw), Senior Secured Loans2023-12-310001512931Seran BioScience, LLC (Revolver), Senior Secured Loans2023-12-310001512931TigerConnect, Inc., Senior Secured Loans2023-12-310001512931TigerConnect, Inc. (Delayed Draw), Senior Secured Loans2023-12-310001512931TigerConnect, Inc. (Revolver), Senior Secured Loans2023-12-310001512931Vero Biotech Inc., Senior Secured Loans2023-12-310001512931Whistler Parent Holdings III, Inc., Senior Secured Loans 12023-12-310001512931Whistler Parent Holdings III, Inc., Senior Secured Loans 22023-12-310001512931Whistler Parent Holdings III, Inc. (Revolver), Senior Secured Loans2023-12-310001512931us-gaap:HealthcareSectorMemberus-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:SeniorLoansMember2023-12-310001512931Amelia Holding II, LLC, Senior Secured Loans2023-12-310001512931Amelia Holding II, LLC (Delayed Draw), Senior Secured Loans2023-12-310001512931Amelia Holding II, LLC (Revolver), Senior Secured Loans2023-12-310001512931Arcstor Midco, LLC, Senior Secured Loans2023-12-310001512931Drawbridge Partners, LLC, Senior Secured Loans2023-12-310001512931Drawbridge Partners, LLC (Delayed Draw), Senior Secured Loans2023-12-310001512931Drawbridge Partners, LLC (Revolver), Senior Secured Loans2023-12-310001512931Medallia, Inc., Senior Secured Loans2023-12-310001512931Mindbody, Inc., Senior Secured Loans 12023-12-310001512931Mindbody, Inc., Senior Secured Loans 22023-12-310001512931Mindbody, Inc. (Revolver), Senior Secured Loans2023-12-310001512931Planful, Inc., Senior Secured Loans 12023-12-310001512931Planful, Inc., Senior Secured Loans 22023-12-310001512931Planful, Inc., Senior Secured Loans 32023-12-310001512931Planful, Inc., Senior Secured Loans 42023-12-310001512931Planful, Inc., Senior Secured Loans 52023-12-310001512931Planful, Inc. (Revolver), Senior Secured Loans2023-12-310001512931Sparq Holdings, Inc., Senior Secured Loans2023-12-310001512931Sparq Holdings, Inc. (Delayed Draw), Senior Secured Loans2023-12-310001512931Sparq Holdings, Inc. (Revolver), Senior Secured Loans2023-12-310001512931mrcc:HighTechIndustriesSectorMemberus-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:SeniorLoansMember2023-12-310001512931Destination Media, Inc., Senior Secured Loans2023-12-310001512931Destination Media, Inc. (Delayed Draw), Senior Secured Loans2023-12-310001512931Destination Media, Inc. (Revolver), Senior Secured Loans2023-12-310001512931North Haven USHC Acquisition, Inc., Senior Secured Loans 12023-12-310001512931North Haven USHC Acquisition, Inc., Senior Secured Loans 22023-12-310001512931North Haven USHC Acquisition, Inc., Senior Secured Loans 32023-12-310001512931North Haven USHC Acquisition, Inc., Senior Secured Loans 42023-12-310001512931North Haven USHC Acquisition, Inc. (Delayed Draw), Senior Secured Loans2023-12-310001512931North Haven USHC Acquisition, Inc. (Revolver), Senior Secured Loans2023-12-310001512931Relevate Health Group, LLC, Senior Secured Loans 12023-12-310001512931Relevate Health Group, LLC, Senior Secured Loans 22023-12-310001512931Relevate Health Group, LLC (Revolver), Senior Secured Loans2023-12-310001512931Spherix Global Inc., Senior Secured Loans2023-12-310001512931Spherix Global Inc. (Revolver), Senior Secured Loans2023-12-310001512931XanEdu Publishing, Inc., Senior Secured Loans 12023-12-310001512931XanEdu Publishing, Inc., Senior Secured Loans 22023-12-310001512931XanEdu Publishing, Inc. (Revolver), Senior Secured Loans2023-12-310001512931us-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:SeniorLoansMembermrcc:MediaAdvertisingPrintingPublishingMember2023-12-310001512931Vice Acquisition Holdco, LLC (fka Vice Group Holding Inc.), Senior Secured Loans 12023-12-310001512931Vice Acquisition Holdco, LLC (fka Vice Group Holding Inc.), Senior Secured Loans 22023-12-310001512931Vice Acquisition Holdco, LLC (fka Vice Group Holding Inc.) (Delayed Draw), Senior Secured Loans2023-12-310001512931mrcc:MediaBroadcastingSubscriptionMemberus-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:SeniorLoansMember2023-12-310001512931Attom Intermediate Holdco, LLC, Senior Secured Loans 12023-12-310001512931Attom Intermediate Holdco, LLC, Senior Secured Loans 22023-12-310001512931Attom Intermediate Holdco, LLC, Senior Secured Loans 32023-12-310001512931Attom Intermediate Holdco, LLC, Senior Secured Loans 42023-12-310001512931Attom Intermediate Holdco, LLC, Senior Secured Loans 52023-12-310001512931Attom Intermediate Holdco, LLC (Revolver), Senior Secured Loans2023-12-310001512931Bonterra, LLC, Senior Secured Loans 12023-12-310001512931Bonterra, LLC, Senior Secured Loans 22023-12-310001512931Bonterra, LLC (Revolver), Senior Secured Loans2023-12-310001512931Chess.com, LLC, Senior Secured Loans2023-12-310001512931Chess.com, LLC (Revolver), Senior Secured Loans2023-12-310001512931Crownpeak Technology, Inc., Senior Secured Loans 12023-12-310001512931Crownpeak Technology, Inc., Senior Secured Loans 22023-12-310001512931Crownpeak Technology, Inc., Senior Secured Loans 32023-12-310001512931Crownpeak Technology, Inc., Senior Secured Loans 42023-12-310001512931Crownpeak Technology, Inc. (Revolver), Senior Secured Loans2023-12-310001512931Sports Operating Holdings II, LLC, Senior Secured Loans2023-12-310001512931Sports Operating Holdings II, LLC (Delayed Draw), Senior Secured Loans2023-12-310001512931Sports Operating Holdings II, LLC (Revolver), Senior Secured Loans2023-12-310001512931V10 Entertainment, Inc., Senior Secured Loans2023-12-310001512931V10 Entertainment, Inc. (Revolver), Senior Secured Loans2023-12-310001512931mrcc:MediaDiversifiedProductionMemberus-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:SeniorLoansMember2023-12-310001512931BLST Operating Company, LLC, Senior Secured Loans2023-12-310001512931us-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:RetailSectorMemberus-gaap:SeniorLoansMember2023-12-310001512931Aras Corporation, Senior Secured Loans2023-12-310001512931Aras Corporation (Revolver), Senior Secured Loans2023-12-310001512931Burroughs, Inc., Senior Secured Loans2023-12-310001512931Burroughs, Inc. (Revolver), Senior Secured Loans2023-12-310001512931HS4 Acquisitionco, Inc., Senior Secured Loans2023-12-310001512931HS4 Acquisitionco, Inc. (Revolver), Senior Secured Loans2023-12-310001512931iCIMS, Inc., Senior Secured Loans2023-12-310001512931Kingsley Gate Partners, LLC, Senior Secured Loans 12023-12-310001512931Kingsley Gate Partners, LLC, Senior Secured Loans 22023-12-310001512931Kingsley Gate Partners, LLC (Delayed Draw), Senior Secured Loans2023-12-310001512931Kingsley Gate Partners, LLC (Revolver), Senior Secured Loans2023-12-310001512931Prototek LLC, Senior Secured Loans2023-12-310001512931Prototek LLC (Revolver), Senior Secured Loans2023-12-310001512931Relativity ODA LLC, Senior Secured Loans2023-12-310001512931Relativity ODA LLC (Revolver), Senior Secured Loans2023-12-310001512931Security Services Acquisition Sub Corp., Senior Secured Loans 12023-12-310001512931Security Services Acquisition Sub Corp., Senior Secured Loans 22023-12-310001512931Security Services Acquisition Sub Corp., Senior Secured Loans 32023-12-310001512931Security Services Acquisition Sub Corp., Senior Secured Loans 42023-12-310001512931Security Services Acquisition Sub Corp., Senior Secured Loans 52023-12-310001512931Vhagar Purchaser, LLC, Senior Secured Loans2023-12-310001512931Vhagar Purchaser, LLC (Delayed Draw), Senior Secured Loans2023-12-310001512931Vhagar Purchaser, LLC (Revolver), Senior Secured Loans2023-12-310001512931VPS Holdings, LLC, Senior Secured Loans 12023-12-310001512931VPS Holdings, LLC, Senior Secured Loans 22023-12-310001512931VPS Holdings, LLC (Revolver), Senior Secured Loans2023-12-310001512931us-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:SeniorLoansMembermrcc:BusinessServicesSectorMember2023-12-310001512931Express Wash Acquisition Company, LLC, Senior Secured Loans 12023-12-310001512931Express Wash Acquisition Company, LLC, Senior Secured Loans 22023-12-310001512931Express Wash Acquisition Company, LLC (Revolver), Senior Secured Loans2023-12-310001512931Kar Wash Holdings, LLC, Senior Secured Loans 12023-12-310001512931Kar Wash Holdings, LLC, Senior Secured Loans 22023-12-310001512931Kar Wash Holdings, LLC (Delayed Draw), Senior Secured Loans2023-12-310001512931Kar Wash Holdings, LLC (Revolver), Senior Secured Loans2023-12-310001512931mrcc:ServicesConsumerSectorMemberus-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:SeniorLoansMember2023-12-310001512931American Broadband and Telecommunications Company LLC (Delayed Draw), Senior Secured Loans2023-12-310001512931American Broadband and Telecommunications Company LLC (Revolver), Senior Secured Loans2023-12-310001512931Calabrio, Inc., Senior Secured Loans2023-12-310001512931Calabrio, Inc. (Delayed Draw), Senior Secured Loans2023-12-310001512931Calabrio, Inc. (Revolver), Senior Secured Loans2023-12-310001512931mrcc:TelecommunicationsMemberus-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:SeniorLoansMember2023-12-310001512931Nearly Natural, Inc., Senior Secured Loans 12023-12-310001512931Nearly Natural, Inc., Senior Secured Loans 22023-12-310001512931Nearly Natural, Inc., Senior Secured Loans 32023-12-310001512931Nearly Natural, Inc., Senior Secured Loans 42023-12-310001512931Nearly Natural, Inc. (Revolver), Senior Secured Loans2023-12-310001512931mrcc:WholesaleMemberus-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:SeniorLoansMember2023-12-310001512931us-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:SeniorLoansMember2023-12-310001512931Cassavant Holdings, LLC, Unitranche Secured Loans2023-12-310001512931us-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:AerospaceSectorMemberus-gaap:UnitrancheDebtMember2023-12-310001512931ASG II, LLC, Unitranche Secured Loans2023-12-310001512931ASG II, LLC (Delayed Draw), Unitranche Secured Loans2023-12-310001512931Onit, Inc., Unitranche Secured Loans2023-12-310001512931us-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:UnitrancheDebtMembermrcc:BusinessServicesSectorMember2023-12-310001512931VB E1, LLC, Unitranche Secured Loans2023-12-310001512931mrcc:TelecommunicationsMemberus-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:UnitrancheDebtMember2023-12-310001512931us-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:UnitrancheDebtMember2023-12-310001512931MoneyLion, Inc., Junior Secured Loans2023-12-310001512931mrcc:Banking1Memberus-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:JuniorLoansMember2023-12-310001512931Florida East Coast Industries, LLC, Junior Secured Loans2023-12-310001512931Witkoff/Monroe 700 JV LLC, Junior Secured Loans 12023-12-310001512931Witkoff/Monroe 700 JV LLC, Junior Secured Loans 22023-12-310001512931Witkoff/Monroe 700 JV LLC (Delayed Draw), Junior Secured Loans2023-12-310001512931us-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:JuniorLoansMembermrcc:FireRealEstateSectorMember2023-12-310001512931Arcstor Midco, LLC, Junior Secured Loans 12023-12-310001512931Arcstor Midco, LLC, Junior Secured Loans 22023-12-310001512931mrcc:HighTechIndustriesSectorMemberus-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:JuniorLoansMember2023-12-310001512931Vice Acquisition Holdco, LLC (fka Vice Group Holding Inc.), Junior Secured Loans 12023-12-310001512931Vice Acquisition Holdco, LLC (fka Vice Group Holding Inc.), Junior Secured Loans 22023-12-310001512931Vice Acquisition Holdco, LLC (fka Vice Group Holding Inc.), Junior Secured Loans 32023-12-310001512931Vice Acquisition Holdco, LLC (fka Vice Group Holding Inc.), Junior Secured Loans 42023-12-310001512931Vice Acquisition Holdco, LLC (fka Vice Group Holding Inc.), Junior Secured Loans2023-12-310001512931mrcc:MediaBroadcastingSubscriptionMemberus-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:JuniorLoansMember2023-12-310001512931Forman Mills, Inc., Junior Secured Loans2023-12-310001512931us-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:JuniorLoansMemberus-gaap:RetailSectorMember2023-12-310001512931Education Corporation of America, Junior Secured Loans2023-12-310001512931mrcc:ServicesConsumerSectorMemberus-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:JuniorLoansMember2023-12-310001512931us-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:JuniorLoansMember2023-12-310001512931Born To Run, LLC, Equity Securities, Class A units2023-12-310001512931Lifted Trucks Holdings, LLC, Equity Securities, Class A units2023-12-310001512931us-gaap:AutomotiveSectorMemberus-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:EquitySecuritiesMember2023-12-310001512931MV Receivables II, LLC, Equity Securities, Common units2023-12-310001512931MV Receivables II, LLC, Equity Securities, Warrant2023-12-310001512931mrcc:Banking1Memberus-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:EquitySecuritiesMember2023-12-310001512931Valudor Products LLC, Equity Securities, Class A-1 units2023-12-310001512931us-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:EquitySecuritiesMemberus-gaap:ChemicalsSectorMember2023-12-310001512931Independence Buyer, Inc., Equity Securities, Class A units2023-12-310001512931us-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:EquitySecuritiesMembermrcc:ConsumerGoodsDurableSectorMember2023-12-310001512931MEI Buyer LLC, Equity Securities, Common stock2023-12-310001512931us-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:ConstructionSectorMemberus-gaap:EquitySecuritiesMember2023-12-310001512931Quest Resource Management Group, LLC, Equity Securities, Warrant 12023-12-310001512931Quest Resource Management Group, LLC, Equity Securities, Warrant 22023-12-310001512931us-gaap:InvestmentUnaffiliatedIssuerMembermrcc:EnvironmentalIndustriesMemberus-gaap:EquitySecuritiesMember2023-12-310001512931J2 BWA Funding LLC, Equity Securities, Profit sharing2023-12-310001512931PKS Holdings, LLC, Equity Securities, Preferred units 12023-12-310001512931PKS Holdings, LLC, Equity Securities, Preferred units 22023-12-310001512931PKS Holdings, LLC, Equity Securities, Preferred units 32023-12-310001512931PKS Holdings, LLC, Equity Securities, Preferred units 42023-12-310001512931us-gaap:InvestmentUnaffiliatedIssuerMembermrcc:FireFinanceSectorMemberus-gaap:EquitySecuritiesMember2023-12-310001512931Witkoff/Monroe 700 JV LLC, Equity Securities, Preferred units2023-12-310001512931us-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:EquitySecuritiesMembermrcc:FireRealEstateSectorMember2023-12-310001512931Bluesight, Inc., Equity Securities, Class A preferred units2023-12-310001512931Bluesight, Inc. , Equity Securities, Class B common units2023-12-310001512931Dorado Acquisition, Inc., Equity Securities, Class A-1 units2023-12-310001512931Dorado Acquisition, Inc., Equity Securities, Class A-2 units2023-12-310001512931KL Moon Acquisition, LLC (fka Spectrum Science Communications, LLC), Equity Securities2023-12-310001512931NationsBenefits, LLC, Equity Securities, Series B units2023-12-310001512931NationsBenefits, LLC, Equity Securities, Common units2023-12-310001512931NQ PE Project Colosseum Midco Inc., Equity Securities, Common units2023-12-310001512931Seran BioScience, LLC, Equity Securities, Common units2023-12-310001512931Vero Biotech Inc., Equity Securities, Warrant2023-12-310001512931us-gaap:HealthcareSectorMemberus-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:EquitySecuritiesMember2023-12-310001512931Amelia Holding II, LLC, Equity Securities, Warrant2023-12-310001512931Drawbridge Partners, LLC, Equity Securities, Class A-1 units2023-12-310001512931Planful, Inc., Equity Securities, Class A units2023-12-310001512931Planful, Inc., Equity Securities, Class B units2023-12-310001512931Recorded Future, Inc, Equity Securities Class A units2023-12-310001512931Sparq Holdings, Inc., Equity Securities, Common stock2023-12-310001512931mrcc:HighTechIndustriesSectorMemberus-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:EquitySecuritiesMember2023-12-310001512931Equine Network, LLC, Equity Securities, Class A units2023-12-310001512931mrcc:HotelsGamingLeisureMemberus-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:EquitySecuritiesMember2023-12-310001512931AdTheorent Holding Company, Inc, Equity Securities, Common stock2023-12-310001512931InMobi Pte, Ltd, Equity Securities, Warrant2023-12-310001512931Relevate Health Group, LLC , Equity Securities, Preferred units2023-12-310001512931Relevate Health Group, LLC , Equity Securities, Class B common units2023-12-310001512931Spherix Global Inc., Equity Securities, Class A units2023-12-310001512931XanEdu Publishing, Inc., Equity Securities, Class A units2023-12-310001512931us-gaap:InvestmentUnaffiliatedIssuerMembermrcc:MediaAdvertisingPrintingPublishingMemberus-gaap:EquitySecuritiesMember2023-12-310001512931Vice Acquisition Holdco, LLC (fka Vice Group Holding Inc.), Equity Securities, Class A units2023-12-310001512931mrcc:MediaBroadcastingSubscriptionMemberus-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:EquitySecuritiesMember2023-12-310001512931Attom Intermediate Holdco, LLC, Equity Securities, Class A units2023-12-310001512931Chess.com, LLC, Equity Securities, Class A units2023-12-310001512931V10 Entertainment, Inc. , Equity Securities, Common units2023-12-310001512931mrcc:MediaDiversifiedProductionMemberus-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:EquitySecuritiesMember2023-12-310001512931BLST Operating Company, LLC, Equity Securities, Class A units2023-12-310001512931us-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:RetailSectorMemberus-gaap:EquitySecuritiesMember2023-12-310001512931APCO Worldwide, Inc., Equity Securities, Class A voting common stock2023-12-310001512931us-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:EquitySecuritiesMembermrcc:BusinessServicesSectorMember2023-12-310001512931Education Corporation of America - Series G Preferred Stock2023-12-310001512931Express Wash Acquisition Company, LLC, Equity Securities, Class A common units2023-12-310001512931Express Wash Acquisition Company, LLC, Class A preferred units2023-12-310001512931Express Wash Acquisition Company, LLC, Equity Securities, Class B preferred units2023-12-310001512931Express Wash Acquisition Company, LLC, Equity Securities, Class B common units2023-12-310001512931IDIG Parent, LLC, Equity Securities, Common stock2023-12-310001512931Kar Wash Holdings, LLC 1, Equity Securities, Class A units2023-12-310001512931Kar Wash Holdings, LLC, Equity Securities, Series A Preferred Stock2023-12-310001512931mrcc:ServicesConsumerSectorMemberus-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:EquitySecuritiesMember2023-12-310001512931American Broadband and Telecommunications Company LLC, Warrants2023-12-310001512931mrcc:TelecommunicationsMemberus-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:EquitySecuritiesMember2023-12-310001512931Nearly Natural, Inc.1, Equity Securities, Class A units2023-12-310001512931Nearly Natural, Inc. 2, Equity Securities, Class AA units2023-12-310001512931mrcc:WholesaleMemberus-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:EquitySecuritiesMember2023-12-310001512931us-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:EquitySecuritiesMember2023-12-310001512931TJ Management HoldCo LLC, Senior Secured Loans, Revolver2023-12-310001512931us-gaap:FoodAndBeverageSectorMemberus-gaap:InvestmentAffiliatedIssuerNoncontrolledMemberus-gaap:SeniorLoansMember2023-12-310001512931American Community Homes, Inc., Senior Secured Loans 12023-12-310001512931American Community Homes, Inc., Senior Secured Loans 22023-12-310001512931American Community Homes, Inc., Senior Secured Loans 32023-12-310001512931American Community Homes, Inc., Senior Secured Loans 42023-12-310001512931American Community Homes, Inc., Senior Secured Loans 52023-12-310001512931American Community Homes, Inc., Senior Secured Loans 62023-12-310001512931American Community Homes, Inc., Senior Secured Loans 72023-12-310001512931American Community Homes, Inc., Senior Secured Loans, Revolver2023-12-310001512931HFZ Capital Group LLC, Senior Secured Loans 12023-12-310001512931HFZ Capital Group LLC, Senior Secured Loans) 22023-12-310001512931MC Asset Management (Corporate), LLC, Senior Secured Loans 12023-12-310001512931MC Asset Management (Corporate), LLC, Senior Secured Loans 22023-12-310001512931Second Avenue SFR Holdings II LLC, Senior Secured Loans, Revolver2023-12-310001512931us-gaap:InvestmentAffiliatedIssuerNoncontrolledMemberus-gaap:SeniorLoansMembermrcc:FireRealEstateSectorMember2023-12-310001512931Mnine Holdings, Inc., Senior Secured Loans 12023-12-310001512931Mnine Holdings, Inc., Senior Secured Loans 22023-12-310001512931Mnine Holdings, Inc., Revolver, Senior Secured Loans 2023-12-310001512931us-gaap:InvestmentAffiliatedIssuerNoncontrolledMembermrcc:HighTechIndustriesSectorMemberus-gaap:SeniorLoansMember2023-12-310001512931NECB Collections, LLC, Senior Secured Loans, Revolver2023-12-310001512931mrcc:ServicesConsumerSectorMemberus-gaap:InvestmentAffiliatedIssuerNoncontrolledMemberus-gaap:SeniorLoansMember2023-12-310001512931us-gaap:InvestmentAffiliatedIssuerNoncontrolledMemberus-gaap:SeniorLoansMember2023-12-310001512931SFR Holdco, LLC, Junior Secured Loans2023-12-310001512931us-gaap:InvestmentAffiliatedIssuerNoncontrolledMemberus-gaap:JuniorLoansMembermrcc:FireRealEstateSectorMember2023-12-310001512931us-gaap:InvestmentAffiliatedIssuerNoncontrolledMemberus-gaap:JuniorLoansMember2023-12-310001512931TJ Management HoldCo LLC, Equity Securities, Common stock2023-12-310001512931us-gaap:FoodAndBeverageSectorMemberus-gaap:InvestmentAffiliatedIssuerNoncontrolledMemberus-gaap:EquitySecuritiesMember2023-12-310001512931American Community Homes, Inc., Equity Securities, Common stock2023-12-310001512931MC Asset Management (Corporate), LLC, Equity Securities2023-12-310001512931SFR Holdco, LLC, Equity 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Equity 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52023-12-310001512931American Community Homes, Inc.., Senior Secured Loans 52024-01-012024-03-310001512931American Community Homes, Inc.., Senior Secured Loans 52024-03-310001512931American Community Homes, Inc.., Senior Secured Loans 62023-12-310001512931American Community Homes, Inc.., Senior Secured Loans 62024-01-012024-03-310001512931American Community Homes, Inc.., Senior Secured Loans 62024-03-310001512931American Community Homes, Inc.., Senior Secured Loans 72023-12-310001512931American Community Homes, Inc.., Senior Secured Loans 72024-01-012024-03-310001512931American Community Homes, Inc.., Senior Secured Loans 72024-03-310001512931American Community Homes, Inc. (Revolver)2023-12-310001512931American Community Homes, Inc. (Revolver)2024-01-012024-03-310001512931American Community Homes, Inc. 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Community Homes, Inc., Senior Secured Loans 12023-03-310001512931American Community Homes, Inc., Senior Secured Loans 22022-12-310001512931American Community Homes, Inc., Senior Secured Loans 22023-01-012023-03-310001512931American Community Homes, Inc., Senior Secured Loans 22023-03-310001512931American Community Homes, Inc., Senior Secured Loans 32022-12-310001512931American Community Homes, Inc., Senior Secured Loans 32023-01-012023-03-310001512931American Community Homes, Inc., Senior Secured Loans 32023-03-310001512931American Community Homes, Inc., Senior Secured Loans 42022-12-310001512931American Community Homes, Inc., Senior Secured Loans 42023-01-012023-03-310001512931American Community Homes, Inc., Senior Secured Loans 42023-03-310001512931American Community Homes, Inc., Senior Secured Loans 52022-12-310001512931American Community Homes, Inc., Senior Secured Loans 52023-01-012023-03-310001512931American Community Homes, Inc., Senior Secured Loans 52023-03-310001512931American Community Homes, Inc., Senior Secured Loans 62022-12-310001512931American Community Homes, Inc., Senior Secured Loans 62023-01-012023-03-310001512931American Community Homes, Inc., Senior Secured Loans 62023-03-310001512931American Community Homes, Inc., Senior Secured Loans 72022-12-310001512931American Community Homes, Inc., Senior Secured Loans 72023-01-012023-03-310001512931American Community Homes, Inc., Senior Secured Loans 72023-03-310001512931American Community Homes, Inc. (Revolver)2022-12-310001512931American Community Homes, Inc. (Revolver)2023-01-012023-03-310001512931American Community Homes, Inc. 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(Revolver)2022-12-310001512931Mnine Holdings, Inc. (Revolver)2023-01-012023-03-310001512931Mnine Holdings, Inc. (Revolver)2023-03-310001512931Mnine Holdings, Inc. (Class B units)2023-03-310001512931Mnine Holdings, Inc. (Class B units)2022-12-310001512931Mnine Holdings, Inc. 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