10-K 1 csl-20231231.htm 10-K csl-20231231
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Lien Debt, ADPD Holdings, LLC - Consumer Services2023-12-310001544206First Lien Debt, Advanced Web Technologies Holding Company - Containers, Packaging & Glass2023-12-310001544206First Lien Debt, Advanced Web Technologies Holding Company - Containers, Packaging & Glass 22023-12-310001544206First Lien Debt, Advanced Web Technologies Holding Company - Containers, Packaging & Glass 32023-12-310001544206First Lien Debt, AI Grace AUS Bidco Pty LTD (Australia), Consumer Goods: Non-Durable2023-12-310001544206First Lien Debt, Allied Benefit Systems Intermediate LLC, Healthcare & Pharmaceuticals2023-12-310001544206First Lien Debt, Alpine Acquisition Corp II - Transportation: Cargo2023-12-310001544206First Lien Debt, American Physician Partners, LLC, Healthcare & Pharmaceuticals 12023-12-310001544206First Lien Debt, American Physician Partners, LLC, Healthcare & Pharmaceuticals 22023-12-310001544206First Lien Debt, Apex Companies Holdings, LLC, Environmental Industries2023-12-310001544206First Lien Debt, Applied Technical Services, LLC - Business Services 12023-12-310001544206First Lien Debt, Applied Technical Services, LLC - Business Services 22023-12-310001544206First Lien Debt, Appriss Health, LLC - Healthcare & Pharmaceuticals2023-12-310001544206First Lien Debt, Ascend Buyer, LLC - Containers, Packaging & Glass2023-12-310001544206First Lien Debt, Associations, Inc. - Construction & Building2023-12-310001544206First Lien Debt, Atlas AU Bidco Pty Ltd (Australia), High Tech Industries2023-12-310001544206First Lien Debt, Atlas US Finco, Inc., High Tech Industries2023-12-310001544206First Lien Debt, Aurora Lux FinCo S.Á.R.L. (Luxembourg) - Software2023-12-310001544206First Lien Debt, Avalara, Inc., Diversified Financial Services2023-12-310001544206First Lien Debt, Barnes & Noble, Inc. - Retail2023-12-310001544206First Lien Debt, Bayside OPCP, LLC, Healthcare & Pharmaceuticals 12023-12-310001544206First Lien Debt, Bayside OPCP, LLC, Healthcare & Pharmaceuticals 22023-12-310001544206First Lien Debt, Bayside OPCP, LLC, Healthcare & Pharmaceuticals 32023-12-310001544206First Lien Debt, BlueCat Networks, Inc. (Canada), High Tech Industries2023-12-310001544206First Lien Debt, BMS Holdings III Corp. - Construction & Building2023-12-310001544206First Lien Debt, Bradyifs Holdings, LLC, Wholesale2023-12-310001544206First Lien Debt, CD&R Madison Parent Ltd (United Kingdom), Business Services 12023-12-31iso4217:EUR0001544206First Lien Debt, CD&R Madison Parent Ltd (United Kingdom), Business Services 22023-12-31iso4217:GBP0001544206First Lien Debt, Celerion Buyer, Inc., Healthcare & Pharmaceuticals2023-12-310001544206First Lien Debt, Chartis Holding, LLC - Business Services2023-12-310001544206First Lien Debt, Chemical Computing Group ULC (Canada) - Software2023-12-310001544206First Lien Debt, CircusTrix Holdings, LLC - Leisure Products & Services 22023-12-310001544206First Lien Debt, Comar Holding Company, LLC - Containers, Packaging & Glass2023-12-310001544206First Lien Debt, CoreWeave Compute Acquisition Co. II, LLC, High Tech Industries2023-12-310001544206First Lien Debt, Cority Software Inc. (Canada) - Software2023-12-310001544206First Lien Debt, Cority Software Inc. (Canada) - Software 22023-12-310001544206First Lien Debt, Coupa Holdings, LLC, Software2023-12-310001544206First Lien Debt, CPI Intermediate Holdings, Inc., Telecommunications2023-12-310001544206First Lien Debt, CST Holding Company, Consumer Goods: Non-Durable2023-12-310001544206First Lien Debt, DCA Investment Holding LLC - Healthcare & Pharmaceuticals2023-12-310001544206First Lien Debt, Denali Midco 2, LLC - Consumer Services2023-12-310001544206First Lien Debt, Dermatology Associates - Healthcare & Pharmaceuticals2023-12-310001544206First Lien Debt, Dermatology Associates - Healthcare & Pharmaceuticals 22023-12-310001544206First Lien Debt, Diligent Corporation - Telecommunications2023-12-310001544206First Lien Debt, Dwyer Instruments, Inc. - Capital Equipment2023-12-310001544206First Lien Debt, Eliassen Group, LLC - Business Services2023-12-310001544206First Lien Debt, Ellkay, LLC - Healthcare & Pharmaceuticals2023-12-310001544206First Lien Debt, Emergency Communications Network, LLC - Telecommunications2023-12-310001544206First Lien Debt, EPS Nass Parent, Inc. - Utilities: Electric2023-12-310001544206First Lien Debt, EvolveIP, LLC - Telecommunications2023-12-310001544206First Lien Debt, Excel Fitness Holdings, Inc. - Leisure Products & Services2023-12-310001544206First Lien Debt, Excelitas Technologies Corp. - Capital Equipment2023-12-310001544206First Lien Debt, Excelitas Technologies Corp. - Capital Equipment 22023-12-310001544206First Lien Debt, FPG Intermediate Holdco, LLC - Consumer Services2023-12-310001544206First Lien Debt, Greenhouse Software, Inc. - Software2023-12-310001544206First Lien Debt, Guidehouse LLP - Sovereign & Public Finance2023-12-310001544206First Lien Debt, Hadrian Acquisition Limited (United Kingdom) - Diversified Financial Services2023-12-310001544206First Lien Debt, Hadrian Acquisition Limited (United Kingdom) - Diversified Financial Services 22023-12-310001544206First Lien Debt, Harbour Benefit Holdings, Inc. - Business Services2023-12-310001544206First Lien Debt, Heartland Home Services, Inc - Consumer Services2023-12-310001544206First Lien Debt, Heartland Home Services, Inc - Consumer Services 22023-12-310001544206First Lien Debt, Hercules Borrower LLC - Environmental Industries2023-12-310001544206First Lien Debt, Hoosier Intermediate, LLC, Healthcare & Pharmaceuticals2023-12-310001544206First Lien Debt, HS Spa Holdings Inc. - Consumer Services2023-12-310001544206First Lien Debt,iCIMS, Inc., Software 12023-12-310001544206First Lien Debt, Infront Luxembourg Finance S.À R.L. (Luxembourg) - Leisure Products & Services2023-12-310001544206First Lien Debt, Integrity Marketing Acquisition, LLC, Diversified Financial Services2023-12-310001544206First Lien Debt, IQN Holding Corp. - Business Services2023-12-310001544206First Lien Debt,iRobot Corporation, Consumer Goods: Durable2023-12-310001544206First Lien Debt, Jeg's Automotive, LLC - Automotive2023-12-310001544206First Lien Debt, Kaseya, Inc. - High Tech Industries2023-12-310001544206First Lien Debt, Lifelong Learner Holdings, LLC - Business Services2023-12-310001544206First Lien Debt, LinQuest Corporation - Aerospace & Defense2023-12-310001544206First Lien Debt, LVF Holdings, Inc. - Beverage & Food2023-12-310001544206First Lien Debt, Material Holdings, LLC - Business Services2023-12-310001544206First Lien Debt, Maverick Acquisition, Inc. - Aerospace & Defense2023-12-310001544206First Lien Debt, Medical Manufacturing Technologies, LLC - Healthcare & Pharmaceuticals2023-12-310001544206First Lien Debt, NEFCO Holding Comapny LLC - Construction & Building2023-12-310001544206First Lien Debt, NEFCO Holding Comapny LLC - Construction & Building 12023-12-310001544206First Lien Debt, NMI AcquisitionCo, Inc. - High Tech Industries2023-12-310001544206First Lien Debt, North Haven Fairway Buyer, LLC, Consumer Services2023-12-310001544206First Lien Debt, North Haven Stallone Buyer, LLC, Consumer Services 12023-12-310001544206First Lien Debt, North Haven Stallone Buyer, LLC, Consumer Services 22023-12-310001544206First Lien Debt, Oak Purchaser, Inc. - Business Services2023-12-310001544206First Lien Debt, Oranje Holdco, Inc., Business Services2023-12-310001544206First Lien Debt, Park County Holdings,LLC, Media: Advertising, Printing & Publishing2023-12-310001544206First Lien Debt, Performance Health Holdings, Inc. - Healthcare & Pharmaceuticals2023-12-310001544206First Lien Debt, Pestco Intermediate, LLC, Environmental Industries2023-12-310001544206First Lien Debt, PF Atlantic Holdco 2, LLC - Leisure Products & Services2023-12-310001544206First Lien Debt, PF Growth Partners, LLC - Leisure Products & Services2023-12-310001544206First Lien Debt, Project Castle, Inc., Capital Equipment2023-12-310001544206First Lien Debt, Prophix Software Inc. (Canada), Software2023-12-310001544206First Lien Debt, Prophix Software Inc. (Canada), Software 12023-12-310001544206First Lien Debt, Pushpay USA Inc., Diversified Financial Services2023-12-310001544206First Lien Debt, PXO Holdings I Corp. - Chemicals, Plastics & Rubber2023-12-310001544206First Lien Debt, QNNECT, LLC, Aerospace & Defense2023-12-310001544206First Lien Debt, Quantic Electronics, LLC - Aerospace & Defense 12023-12-310001544206First Lien Debt, Quantic Electronics, LLC - Aerospace & Defense 22023-12-310001544206First Lien Debt, Radwell Parent, LLC, Wholesale2023-12-310001544206First Lien Debt, Regency Entertainment, Inc., Media: Advertising, Printing & Publishing2023-12-310001544206First Lien Debt, RSC Acquisition, Inc. - Diversified Financial Services2023-12-310001544206First Lien Debt, Sapphire Convention, Inc. - Telecommunications2023-12-310001544206First Lien Debt, SCP Eye Care HoldCo, LLC, Healthcare & Pharmaceuticals2023-12-310001544206First Lien Debt, Smarsh Inc. - Software2023-12-310001544206First Lien Debt, SPay, Inc. - Leisure Products & Services2023-12-310001544206First Lien Debt, Speedstar Holding, LLC - Automotive2023-12-310001544206First Lien Debt, Spotless Brands, LLC, Consumer Services12023-12-310001544206First Lien Debt, Spotless Brands, LLC, Consumer Services22023-12-310001544206First Lien Debt, Summit Acquisition, Inc., Diversified Financial Services2023-12-310001544206First Lien Debt, Tank Holding Corp. - Capital Equipment2023-12-310001544206First Lien Debt, TCFI Aevex LLC - Aerospace & Defense2023-12-310001544206First Lien Debt, TIBCO Software Inc. - High Tech Industries2023-12-310001544206First Lien Debt, Trader Corporation (Canada), Automotive2023-12-31iso4217:CAD0001544206First Lien Debt, Tufin Software North America, Inc. - Software2023-12-310001544206First Lien Debt, Turbo Buyer, Inc. - Automotive2023-12-310001544206First Lien Debt, U.S. Legal Support, Inc. - Business Services2023-12-310001544206First Lien Debt, US INFRA SVCS Buyer, LLC - Environmental Industries2023-12-310001544206First Lien Debt, USALCO, LLC - Chemicals, Plastics & Rubber2023-12-310001544206First Lien Debt, USR Parent Inc. - Retail2023-12-310001544206First Lien Debt, Vensure Employee Services, Inc., Business Services2023-12-310001544206First Lien Debt, Westfall Technik, Inc. - Chemicals, Plastics & Rubber2023-12-310001544206First Lien Debt, Wineshipping.com LLC - Beverage & Food22023-12-310001544206First Lien Debt, Yellowstone Buyer Acquisition, LLC - Consumer Goods: Durable2023-12-310001544206First Lien Debt, YLG Holdings, Inc. - Consumer Services2023-12-310001544206us-gaap:InvestmentUnaffiliatedIssuerMembercsl:DebtSecuritiesFirstLienMember2023-12-310001544206csl:DebtSecuritiesSecondLienMembercsl:InvestmentTypeConcentrationRiskMemberus-gaap:InvestmentUnaffiliatedIssuerMembercsl:InvestmentsAtFairValueMember2023-01-012023-12-310001544206Second Lien, 11852604 Canada Inc. (Canada), Healthcare & Pharmaceuticals2023-12-310001544206Second Lien, AI Convoy S.A.R.L (United Kingdom), Aerospace & Defense2023-12-310001544206Second Lien, Aimbridge Acquisition Co., Inc., Hotel, Gaming & Leisure2023-12-310001544206Second Lien, AP Plastics Acquisition Holdings, LLC, Chemicals, Plastics & Rubber2023-12-310001544206Second Lien, AQA Acquisition Holdings, Inc., High Tech Industries2023-12-310001544206Second Lien, Bayside OPCP, LLC, Healthcare & Pharmaceuticals2023-12-310001544206Second Lien, Outcomes Group Holdings, Inc., Business Services2023-12-310001544206Second Lien, PAI Holdco, Inc., Automotive2023-12-310001544206Second Lien, Quartz Holding Company, Software2023-12-310001544206Second Lien, Stonegate Pub Company Bidco Limited (United Kingdom), Beverage, Food & Tobacco2023-12-310001544206Second Lien, TruGreen Limited Partnership, Consumer Services2023-12-310001544206Second Lien Debt, World 50, Inc. - Business Services2023-12-310001544206csl:DebtSecuritiesSecondLienMemberus-gaap:InvestmentUnaffiliatedIssuerMember2023-12-310001544206csl:InvestmentTypeConcentrationRiskMemberus-gaap:InvestmentUnaffiliatedIssuerMembercsl:InvestmentsAtFairValueMemberus-gaap:EquitySecuritiesMember2023-01-012023-12-310001544206Equity Investments, ANLG Holdings, LLC, Capital Equipment2023-12-310001544206Equity Investments, Appriss Health, LLC, Healthcare & Pharmaceuticals2023-12-310001544206Equity Investments, Atlas Ontario LP (Canada), Business Services2023-12-310001544206Equity Investments, Bayside HoldCo, LLC, Healthcare & Pharmaceuticals2023-12-310001544206Equity Investments, Blackbird Holdco, Inc., Capital Equipment2023-12-310001544206Equity Investments, Buckeye Parent, LLC, Automotive2023-12-310001544206Equity Investments, Chartis Holding, LLC, Business Services2023-12-310001544206Equity Investments, CIP Revolution Holdings, LLC, Media: Advertising, Printing & Publishing2023-12-310001544206Equity Investments, Cority Software Inc. (Canada), Software2023-12-310001544206Equity Investments, Derm Growth Partners III, LLC, Healthcare & Pharmaceuticals2023-12-310001544206Equity Investments, Diligent Corporation, Telecommunications2023-12-310001544206Equity Investments, ECP Parent, LLC, Healthcare & Pharmaceuticals2023-12-310001544206Equity Investments, GB Vino Parent, L.P., Beverage, Food & Tobacco2023-12-310001544206Equity Investments, Integrity Marketing Group, LLC, Banking, Finance, Insurance & Real Estate2023-12-310001544206Equity Investments, Legacy.com, Inc., High Tech Industries2023-12-310001544206Equity Investments, NearU Holdings LLC - Consumer Services2023-12-310001544206Equity Investments, NEFCO Holding Comapny LLC - Construction & Building2023-12-310001544206Equity Investments, North Haven Goldfinch Topco, LLC - Containers, Packaging & Glass2023-12-310001544206Equity Investments, Pascal Ultimate Holdings, L.P - Capital Equipment2023-12-310001544206Equity Investments, Picard Parent, Inc. - High Tech Industries2023-12-310001544206Equity Investments, Profile Holdings I, LP - Chemicals, Plastics & Rubber2023-12-310001544206Equity Investments, Sinch AB (Sweden) - High Tech Industries2023-12-310001544206Equity Investments, Summit K2 Midco, Inc., Diversified Financial Services2023-12-310001544206Equity Investments, Tailwind HMT Holdings Corp. - Energy: Oil & Gas2023-12-310001544206Equity Investments, Talon MidCo 1 Limited, Software2023-12-310001544206Equity Investments, Tank Holding Corp. - Capital Equipment2023-12-310001544206Equity Investments, Titan DI Preferred Holdings, Inc. - Energy: Oil & Gas2023-12-310001544206Equity Investments, Turbo Buyer, Inc. - Automotive2023-12-310001544206Equity Investments,U.S. Legal Support Investment Holdings, LLC - Business Services2023-12-310001544206Equity Investments, W50 Parent LLC - Business Services2023-12-310001544206Equity Investments, Zenith American Holding, Inc., Business Services2023-12-310001544206us-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:EquitySecuritiesMember2023-12-310001544206us-gaap:InvestmentUnaffiliatedIssuerMember2023-12-310001544206csl:InvestmentTypeConcentrationRiskMembercsl:InvestmentsAtFairValueMemberus-gaap:InvestmentAffiliatedIssuerNoncontrolledMembercsl:DebtSecuritiesFirstLienMember2023-01-012023-12-310001544206First Lien Debt, Direct Travel, Inc., Leisure Products & Services 12023-12-310001544206First Lien Debt, Direct Travel, Inc., Leisure Products & Services 22023-12-310001544206us-gaap:InvestmentAffiliatedIssuerNoncontrolledMembercsl:DebtSecuritiesFirstLienMember2023-12-310001544206csl:InvestmentTypeConcentrationRiskMembercsl:InvestmentsAtFairValueMemberus-gaap:InvestmentAffiliatedIssuerNoncontrolledMemberus-gaap:EquitySecuritiesMember2023-01-012023-12-310001544206Equity Investments, Direct Travel, Inc., Leisure Products & Services2023-12-310001544206us-gaap:InvestmentAffiliatedIssuerNoncontrolledMemberus-gaap:EquitySecuritiesMember2023-12-310001544206us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember2023-12-310001544206csl:InvestmentTypeConcentrationRiskMemberus-gaap:OtherThanSecuritiesInvestmentMembercsl:InvestmentsAtFairValueMemberus-gaap:InvestmentAffiliatedIssuerControlledMember2023-01-012023-12-310001544206Investment Funds, Middle Market Credit Fund II, LLC, Member's Interest, Investment Funds2023-12-310001544206Investment Funds, Middle Market Credit Fund, LLC, Subordinated Loan and Member's Interest, Investment Funds2023-12-310001544206Investment Funds, Middle Market Credit Fund, Mezzanine Loan, Investment Funds2023-12-310001544206us-gaap:OtherThanSecuritiesInvestmentMemberus-gaap:InvestmentAffiliatedIssuerControlledMember2023-12-310001544206us-gaap:InvestmentAffiliatedIssuerControlledMember2023-12-310001544206us-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember2023-12-310001544206us-gaap:InterestRateSwapMember2023-12-310001544206csl:A30DaySOFRMember2023-12-310001544206csl:A90DaySOFRMember2023-12-310001544206csl:A180DaySOFRMember2023-12-310001544206csl:DailySONIARateMember2023-12-310001544206csl:A30DayEURIBORMember2023-12-310001544206csl:A90DayEURIBORMember2023-12-310001544206csl:A30DayCDORMember2023-12-310001544206srt:MinimumMember2023-12-310001544206us-gaap:EquitySecuritiesMember2023-12-310001544206srt:MinimumMemberus-gaap:MeasurementInputCreditSpreadMember2023-12-310001544206srt:MaximumMemberus-gaap:MeasurementInputCreditSpreadMember2023-12-310001544206Middle Market Credit Fund, LLC, Subordinated Loan and Member's Interest2022-12-310001544206Middle Market Credit Fund, LLC, Subordinated Loan and Member’s Interest2023-01-012023-12-310001544206Middle Market Credit Fund, LLC, Subordinated Loan and Member’s Interest2023-12-310001544206Middle Market Credit Fund, LLC, Mezzanine Loan2022-12-310001544206Middle Market Credit Fund, LLC, Mezzanine Loan2023-01-012023-12-310001544206Middle Market Credit Fund, LLC, Mezzanine Loan2023-12-310001544206Middle Market Credit Fund II, LLC, Member's Interest2022-12-310001544206Middle Market Credit Fund II, LLC, Member’s Interest2023-01-012023-12-310001544206Middle Market Credit Fund II, LLC, Member’s Interest2023-12-310001544206csl:MiddleMarketCreditFundLLCAndMiddleMarketCreditFundIILLCMemberus-gaap:InvestmentAffiliatedIssuerControlledMember2022-12-310001544206csl:MiddleMarketCreditFundLLCAndMiddleMarketCreditFundIILLCMemberus-gaap:InvestmentAffiliatedIssuerControlledMember2023-01-012023-12-310001544206csl:MiddleMarketCreditFundLLCAndMiddleMarketCreditFundIILLCMemberus-gaap:InvestmentAffiliatedIssuerControlledMember2023-12-310001544206Direct Travel, Inc. 12022-12-310001544206Direct Travel, Inc. 12023-01-012023-12-310001544206Direct Travel, Inc. 12023-12-310001544206Direct Travel, Inc. 22022-12-310001544206Direct Travel, Inc. 22023-01-012023-12-310001544206Direct Travel, Inc. 22023-12-310001544206Direct Travel, Inc. (Equity)2022-12-310001544206Direct Travel, Inc. (Equity)2023-01-012023-12-310001544206Direct Travel, Inc. (Equity)2023-12-310001544206us-gaap:InvestmentAffiliatedIssuerNoncontrolledMembercsl:DirectTravelIncMember2022-12-310001544206us-gaap:InvestmentAffiliatedIssuerNoncontrolledMembercsl:DirectTravelIncMember2023-01-012023-12-310001544206us-gaap:InvestmentAffiliatedIssuerNoncontrolledMembercsl:DirectTravelIncMember2023-12-310001544206First and Second Lien Debt, ADPD Holdings, LLC, Delayed Draw 12023-12-310001544206First and Second Lien Debt, ADPD Holdings, LLC, Revolver2023-12-310001544206First and Second Lien Debt, Advanced Web Technologies Holding Company, Revolver2023-12-310001544206First and Second Lien Debt, Allied Benefit Systems Intermediate LLC, Delayed Draw2023-12-310001544206First and Second Lien Debt, Alpine Acquisition Corp II, Revolver2023-12-310001544206First and Second Lien Debt, Apex Companies Holdings, LLC, Delayed Draw2023-12-310001544206First and Second Lien Debt, Applied Technical Services, LLC, Revolver2023-12-310001544206First and Second Lien Debt, Appriss Health, LLC, Revolver2023-12-310001544206First and Second Lien Debt, Ascend Buyer, LLC, Revolver2023-12-310001544206First and Second Lien Debt, Associations, Inc., Revolver2023-12-310001544206First and Second Lien Debt, Atlas AU Bidco Pty Ltd (Austria), Revolver2023-12-310001544206First and Second Lien Debt, Avalara, Inc., Revolver2023-12-310001544206First and Second Lien Debt, Bayside OPCP, LLC, Revolver2023-12-310001544206First and Second Lien Debt, BlueCat Networks Inc. (Canada), Delayed Draw 12023-12-310001544206First and Second Lien Debt, Bradyifs Holdings, LLC, Revolver2023-12-310001544206First and Second Lien Debt, Bradyifs Holdings, LLC, Delayed Draw2023-12-310001544206First and Second Lien Debt, CD&R Madison Parent Ltd (United Kingdom), Delayed Draw2023-12-310001544206First and Second Lien Debt, Celerion Buyer, Inc., Revolver2023-12-310001544206First and Second Lien Debt, Celerion Buyer, Inc., Delayed Draw2023-12-310001544206First and Second Lien Debt, Chartis Holding, LLC, Revolver2023-12-310001544206First and Second Lien Debt, Chemical Computing Group ULC (Canada), Revolver2023-12-310001544206First and Second Lien Debt, CircusTrix Holdings, LLC, Delayed Draw2023-12-310001544206First and Second Lien Debt, CircusTrix Holdings, LLC, Revolver2023-12-310001544206First and Second Lien Debt, CoreWeave Compute Acquisition Co. II, LLC, Delayed Draw2023-12-310001544206First and Second Lien Debt, Cority Software Inc. (Canada), Revolver2023-12-310001544206First and Second Lien Debt, Coupa Holdings, LLC, Delayed Draw2023-12-310001544206First and Second Lien Debt, Coupa Holdings, LLC, Revolver2023-12-310001544206First and Second Lien Debt, CPI Intermediate Holdings, Inc., Delayed Draw2023-12-310001544206First and Second Lien Debt, CST Holding Company, Revolver2023-12-310001544206First and Second Lien Debt, Denali Midco 2, LLC, Delayed Draw2023-12-310001544206First and Second Lien Debt, Diligent Corporation, Revolver2023-12-310001544206First and Second Lien Debt, Direct Travel, Inc., Delayed Draw2023-12-310001544206First and Second Lien Debt, Dwyer Instruments, Inc., Revolver2023-12-310001544206First and Second Lien Debt, Eliassen Group, LLC, Delayed Draw2023-12-310001544206First and Second Lien Debt, Ellkay, LLC, Revolver2023-12-310001544206First and Second Lien Debt, EPS Nass Parent, Inc., Revolver2023-12-310001544206First and Second Lien Debt, Excel Fitness Holdings, Inc., Revolver2023-12-310001544206First and Second Lien Debt, Excelitas Technologies Corp., Delayed Draw2023-12-310001544206First and Second Lien Debt, Excelitas Technologies Corp., Revolver2023-12-310001544206First and Second Lien Debt, FPG Intermediate Holdco, LLC, Delayed Draw2023-12-310001544206First and Second Lien Debt, Greenhouse Software, Inc., Revolver 12023-12-310001544206First and Second Lien Debt, Hadrian Acquisition Limited (United Kingdom), Delayed Draw2023-12-310001544206First and Second Lien Debt, Harbour Benefit Holdings, Inc., Revolver2023-12-310001544206First and Second Lien Debt, Heartland Home Services, Inc., Revolver2023-12-310001544206First and Second Lien Debt, Hercules Borrower LLC, Revolver2023-12-310001544206First and Second Lien Debt, Hoosier Intermediate, LLC, Revolver2023-12-310001544206First and Second Lien Debt, HS Spa Holdings Inc., Revolver2023-12-310001544206First and Second Lien Debt, iCIMS, Inc., Delayed Draw2023-12-310001544206First and Second Lien Debt, iCIMS, Inc., Revolver2023-12-310001544206First and Second Lien Debt, IQN Holding Corp., Delayed Draw2023-12-310001544206First and Second Lien Debt, IQN Holding Corp., Revolver2023-12-310001544206First and Second Lien Debt, Kaseya, Inc., Delayed Draw2023-12-310001544206First and Second Lien Debt, Kaseya, Inc., Revolver2023-12-310001544206First and Second Lien Debt, Lifelong Learner Holdings, LLC, Revolver2023-12-310001544206First and Second Lien Debt, LVF Holdings, Inc., Revolver2023-12-310001544206First and Second Lien Debt, Material Holdings, LLC, Revolver2023-12-310001544206First and Second Lien Debt, Medical Manufacturing Technologies, LLC, Revolver2023-12-310001544206First and Second Lien Debt, NEFCO Holding Company LLC, Delayed Draw 12023-12-310001544206First and Second Lien Debt, NEFCO Holding Company LLC, Revolver2023-12-310001544206First and Second Lien Debt, NMI AcquisitionCo, Inc., Revolver2023-12-310001544206First and Second Lien Debt, North Haven Fairway Buyer, LLC, Revolver2023-12-310001544206First and Second Lien Debt, North Haven Stallone Buyer, LLC, Delayed Draw2023-12-310001544206First and Second Lien Debt, Oak Purchaser, Inc., Delayed Draw2023-12-310001544206First and Second Lien Debt, Oak Purchaser, Inc., Revolver2023-12-310001544206First and Second Lien Debt, Oranje Holdco, Inc., Revolver2023-12-310001544206First and Second Lien Debt, Pestco Intermediate, LLC, Delayed Draw2023-12-310001544206First and Second Lien Debt, Pestco Intermediate, LLC, Revolver2023-12-310001544206First and Second Lien Debt, PF Atlantic Holdco 2, LLC, Revolver2023-12-310001544206First and Second Lien Debt, Prophix Software Inc. (Canada), Delayed Draw2023-12-310001544206First and Second Lien Debt, Prophix Software Inc. (Canada), Revolver2023-12-310001544206First and Second Lien Debt, Pushpay USA Inc., Revolver2023-12-310001544206First and Second Lien Debt, PXO Holdings I Corp., Delayed Draw2023-12-310001544206First and Second Lien Debt, PXO Holdings I Corp., Revolver2023-12-310001544206First and Second Lien Debt, QNNECT, LLC, Delayed Draw2023-12-310001544206First and Second Lien Debt, Radwell Parent, LLC, Revolver2023-12-310001544206First and Second Lien Debt, RSC Acquisition, Inc., Revolver2023-12-310001544206First and Second Lien Debt, Sapphire Convention, Inc., Revolver2023-12-310001544206First and Second Lien Debt, SCP Eye Care HoldCo, LLC, Delayed Draw2023-12-310001544206First and Second Lien Debt, SCP Eye Care HoldCo, LLC, Revolver2023-12-310001544206First and Second Lien Debt, Smarsh Inc., Delayed Draw2023-12-310001544206First and Second Lien Debt, Smarsh Inc., Revolver2023-12-310001544206First and Second Lien Debt, Spotless Brands, LLC, Delayed Draw2023-12-310001544206First and Second Lien Debt, Spotless Brands, LLC, Revolver2023-12-310001544206First and Second Lien Debt,Summit Acquisition, Inc., Delayed Draw2023-12-310001544206First and Second Lien Debt,Summit Acquisition, Inc., Revolver2023-12-310001544206First and Second Lien Debt, Tank Holding Corp., Revolver2023-12-310001544206First and Second Lien Debt, Trader Corporation (Canada), Revolver2023-12-310001544206First and Second Lien Debt, Tufin Software North America, Inc., Delayed Draw2023-12-310001544206First and Second Lien Debt, Tufin Software North America, Inc., Revolver2023-12-310001544206First and Second Lien Debt, Turbo Buyer, Inc., Delayed Draw2023-12-310001544206First and Second Lien Debt, Turbo Buyer, Inc., Revolver2023-12-310001544206First and Second Lien Debt, U.S. Legal Support, Inc., Delayed Draw2023-12-310001544206First and Second Lien Debt, U.S. Legal Support, Inc., Revolver2023-12-310001544206First and Second Lien Debt, Vensure Employee Services, Inc., Delayed Draw2023-12-310001544206First and Second Lien Debt, Wineshipping.com LLC, Revolver2023-12-310001544206csl:DebtSecuritiesFirstLienMember2023-12-310001544206csl:DebtSecuritiesSecondLienMember2023-12-310001544206us-gaap:OtherThanSecuritiesInvestmentMember2023-12-310001544206us-gaap:DebtSecuritiesMembercsl:FloatingRateMember2023-12-310001544206csl:FixedRateMemberus-gaap:DebtSecuritiesMember2023-12-310001544206us-gaap:DebtSecuritiesMember2023-12-310001544206us-gaap:AerospaceSectorMember2023-12-310001544206us-gaap:AutomotiveSectorMember2023-12-310001544206us-gaap:FoodAndBeverageSectorMember2023-12-310001544206csl:BusinessServicesMember2023-12-310001544206csl:CapitalEquipmentMember2023-12-310001544206csl:ChemicalsPlasticsAndRubberMember2023-12-310001544206us-gaap:ConstructionSectorMember2023-12-310001544206csl:ConsumerGoodsDurableMember2023-12-310001544206csl:ConsumerGoodsNonDurableMember2023-12-310001544206csl:ConsumerServicesMember2023-12-310001544206us-gaap:ContainerAndPackagingSectorMember2023-12-310001544206csl:DiversifiedFinancialServicesMember2023-12-310001544206csl:EnergySectorOilAndGasMember2023-12-310001544206csl:EnvironmentalIndustriesMember2023-12-310001544206us-gaap:HealthcareSectorMember2023-12-310001544206us-gaap:TechnologySectorMember2023-12-310001544206csl:InvestmentFundsMember2023-12-310001544206csl:LeisureProductsServicesSectorMember2023-12-310001544206csl:MediaAdvertisingPrintingAndPublishingMember2023-12-310001544206us-gaap:RetailSectorMember2023-12-310001544206csl:SoftwareSectorMember2023-12-310001544206csl:SovereignAndPublicFinanceMember2023-12-310001544206csl:TelecommunicationsSectorMember2023-12-310001544206us-gaap:TransportationSectorMember2023-12-310001544206csl:UtilitiesSectorElectricMember2023-12-310001544206csl:WholesaleSectorMember2023-12-310001544206csl:InvestmentsAtFairValueMembercsl:IndustryConcentrationRiskMember2023-01-012023-12-310001544206country:AU2023-12-310001544206country:CA2023-12-310001544206country:LU2023-12-310001544206country:SE2023-12-310001544206country:GB2023-12-310001544206country:US2023-12-310001544206csl:InvestmentTypeConcentrationRiskMemberus-gaap:InvestmentUnaffiliatedIssuerMembercsl:InvestmentsAtFairValueMembercsl:DebtSecuritiesFirstLienMember2022-01-012022-12-310001544206First Lien Debt, ADPD Holdings, LLC, Consumer Services2022-12-310001544206First Lien, Advanced Web Technologies Holding Company, Containers, Packaging & Glass2022-12-310001544206First Lien, Airnov, Inc., Containers, Packaging & Glass2022-12-310001544206First Lien, Allied Universal Holdco LLC, Business Services2022-12-310001544206First Lien Debt, Alpine Acquisition Corp II, Transportation: Cargo2022-12-310001544206First Lien, American Physician Partners, LLC, Healthcare & Pharmaceuticals2022-12-310001544206First Lien Debt, American Physician Partners, LLC, Healthcare & Pharmaceuticals2022-12-310001544206First Lien, Analogic Corporation, Capital Equipment2022-12-310001544206First Lien, Applied Technical Services, LLC, Business Services2022-12-310001544206First Lien, Appriss Health, LLC, Healthcare & Pharmaceuticals2022-12-310001544206First Lien, Apptio, Inc., Software2022-12-310001544206First Lien, Ascend Buyer, LLC, Containers, Packaging & Glass2022-12-310001544206First Lien, Associations, Inc., Construction & Building2022-12-310001544206First Lien Debt, Atlas AU Bidco Pty Ltd (Australia), High Tech Industries2022-12-310001544206First Lien, Aurora Lux FinCo S.Á.R.L. (Luxembourg), Software2022-12-310001544206First Lien Debt, Avalara, Inc., Diversified Financial Services2022-12-310001544206First Lien, Barnes & Noble, Inc., Retail2022-12-310001544206First Lien, BlueCat Networks, Inc. (Canada), High Tech Industries2022-12-310001544206First Lien, BMS Holdings III Corp., Construction & Building2022-12-310001544206First Lien Debt, Bradyifs Holdings, LLC, Wholesale2022-12-310001544206First Lien, Bubbles Bidco S.P.A. (Italy), Consumer Goods: Non-Durable2022-12-310001544206First Lien, Bubbles Bidco S.P.A. (Italy), Consumer Goods: Non-Durable 22022-12-310001544206First Lien Debt, Celerion Buyer, Inc., Healthcare & Pharmaceuticals2022-12-310001544206First Lien Debt, Chartis Holding, LLC, Business Services2022-12-310001544206First Lien, Chemical Computing Group ULC (Canada), Software2022-12-310001544206First Lien, CircusTrix Holdings, LLC, Hotel, Gaming & Leisure2022-12-310001544206First Lien, CircusTrix Holdings, LLC, Hotel, Gaming & Leisure 22022-12-310001544206First Lien, Comar Holding Company, LLC, Containers, Packaging & Glass2022-12-310001544206First Lien, Cority Software Inc. (Canada), Software2022-12-310001544206First Lien, Cority Software Inc. (Canada), Software 22022-12-310001544206First Lien, CPI Intermediate Holdings, Inc., Telecommunications2022-12-310001544206First Lien, CST Holding Company, Consumer Goods: Non-Durable2022-12-310001544206First Lien, DCA Investment Holding, LLC, Healthcare & Pharmaceuticals2022-12-310001544206First Lien, Denali Midco 2, LLC, Consumer Services2022-12-310001544206First Lien, DermaRite Industries, LLC, Healthcare & Pharmaceuticals2022-12-310001544206First Lien, Dermatology Associates, Healthcare & Pharmaceuticals 12022-12-310001544206First Lien, Dermatology Associates, Healthcare & Pharmaceuticals 22022-12-310001544206First Lien, Diligent Corporation, Telecommunications2022-12-310001544206First Lien, Dwyer Instruments, Inc, Capital Equipment2022-12-310001544206First Lien, Eliassen Group, LLC, Business Services2022-12-310001544206First Lien, Ellkay, LLC, Healthcare & Pharmaceuticals2022-12-310001544206First Lien, Emergency Communications Network, LLC, Telecommunications2022-12-310001544206First Lien, EPS Nass Parent, Inc., Utilities: Electric2022-12-310001544206First Lien, EvolveIP, LLC, Telecommunications2022-12-310001544206First Lien, Excel Fitness Holdings, Inc., Leisure Products & Services2022-12-310001544206First Lien, Excelitas Technologies Corp., Capital Equipment 12022-12-310001544206First Lien, Excelitas Technologies Corp., Capital Equipment 22022-12-310001544206First Lien, FPG Intermediate Holdco, LLC, Consumer Services2022-12-310001544206First Lien, Greenhouse Software, Inc., Software2022-12-310001544206First Lien, Guidehouse LLP, Sovereign & Public Finance2022-12-310001544206First Lien, Hadrian Acquisition Limited (United Kingdom), Diversified Financial Services 12022-12-310001544206First Lien, Hadrian Acquisition Limited (United Kingdom), Diversified Financial Services 22022-12-310001544206First Lien, Harbour Benefit Holdings, Inc., Business Services2022-12-310001544206First Lien, Heartland Home Services, Inc., Consumer Services2022-12-310001544206First Lien, Heartland Home Services, Inc, Consumer Services2022-12-310001544206First Lien, Hercules Borrower LLC, Environmental Industries2022-12-310001544206First Lien, Higginbotham Insurance Agency, Inc., Diversified Financial Services2022-12-310001544206First Lien, Hoosier Intermediate, LLC, Healthcare & Pharmaceuticals2022-12-310001544206First Lien, HS Spa Holdings Inc., Consumer Services2022-12-310001544206First Lien, iCIMS, Inc., Software2022-12-310001544206First Lien, Infront Luxembourg Finance S.À R.L. (Luxembourg), Hotel, Gaming & Leisure2022-12-310001544206First Lien, Integrity Marketing Acquisition, LLC, Banking, Finance, Insurance & Real Estate 22022-12-310001544206First Lien, IQN Holding Corp., Business Services2022-12-310001544206First Lien, Jeg's Automotive, LLC, Automotive2022-12-310001544206First Lien, K2 Insurance Services, LLC, Banking, Finance, Insurance & Real Estate2022-12-310001544206First Lien, Kaseya, Inc., High Tech Industries2022-12-310001544206First Lien, Lifelong Learner Holdings, LLC, Business Services2022-12-310001544206First Lien, LinQuest Corporation, Aerospace & Defense2022-12-310001544206First Lien, Liqui-Box Holdings, Inc., Containers, Packaging & Glass2022-12-310001544206First Lien, LVF Holdings, Inc., Beverage & Food 2022-12-310001544206First Lien, Material Holdings, LLC, Business Services2022-12-310001544206First Lien, Maverick Acquisition, Inc., Aerospace & Defense2022-12-310001544206First Lien, Medical Manufacturing Technologies, LLC, Healthcare & Pharmaceuticals2022-12-310001544206First Lien, NEFCO Holding Company LLC, Construction & Building2022-12-310001544206First Lien, NMI AcquisitionCo, Inc., High Tech Industries2022-12-310001544206First Lien, North Haven Fairway Buyer, LLC, Consumer Services2022-12-310001544206First Lien, North Haven Stallone Buyer, LLC, Consumer Services2022-12-310001544206First Lien, Oak Purchaser, Inc., Business Services2022-12-310001544206First Lien, Performance Health Holdings, Inc, Healthcare & Pharmaceuticals2022-12-310001544206First Lien, PF Atlantic Holdco 2, LLC, Leisure Products & Services2022-12-310001544206First Lien, PF Growth Partners, LLC, Leisure Products & Services2022-12-310001544206First Lien, PPT Management Holdings, LLC, Healthcare & Pharmaceuticals2022-12-310001544206First Lien, Project Castle, Inc., Capital Equipment2022-12-310001544206First Lien, Prophix Software Inc. (Canada), Software2022-12-310001544206First Lien, PXO Holdings I Corp., Chemicals, Plastics & Rubber2022-12-310001544206First Lien, QNNECT, LLC, Aerospace & Defense2022-12-310001544206First Lien, Quantic Electronics, LLC, Aerospace & Defense2022-12-310001544206First Lien, Quantic Electronics, LLC, Aerospace & Defense 22022-12-310001544206First Lien, QW Holding Corporation, Environmental Industries2022-12-310001544206First Lien, Radwell Parent, LLC, Wholesale2022-12-310001544206First Lien, Regency Entertainment, Inc., Media: Diversified & Production2022-12-310001544206First Lien, Riveron Acquisition Holdings, Inc., Diversified Financial Services2022-12-310001544206First Lien, RSC Acquisition, Inc., Diversified Financial Services2022-12-310001544206First Lien, Sapphire Convention, Inc., Telecommunications2022-12-310001544206First Lien, SCP Eye Care HoldCo, LLC, Healthcare & Pharmaceuticals2022-12-310001544206First Lien, Smarsh Inc., Software2022-12-310001544206First Lien, SPay, Inc., Hotel, Gaming & Leisure2022-12-310001544206First Lien, Speedstar Holding, LLC, Automotive2022-12-310001544206First Lien, Spotless Brands, LLC, Consumer Services2022-12-310001544206First Lien, Tank Holding Corp., Capital Equipment2022-12-310001544206First Lien, TCFI Aevex LLC, Aerospace & Defense2022-12-310001544206First Lien, The Carlstar Group LLC, Automotive2022-12-310001544206First Lien, TIBCO Software Inc., High Tech Industries2022-12-310001544206First Lien, Trader Corporation (Canada), Automotive2022-12-310001544206First Lien, Trafigura Trading LLC, Metals & Mining2022-12-310001544206First Lien, Tufin Software North America, Inc., Software2022-12-310001544206First Lien, Turbo Buyer, Inc., Automotive2022-12-310001544206First Lien, U.S. Legal Support, Inc., Business Services2022-12-310001544206First Lien, Unifrutti Financing PLC (Cyprus), Beverage & Food 12022-12-310001544206First Lien, Unifrutti Financing PLC (Cyprus), Beverage & Food 22022-12-310001544206First Lien, US INFRA SVCS Buyer, LLC, Environmental Industries2022-12-310001544206First Lien, USALCO, LLC, Chemicals, Plastics & Rubber2022-12-310001544206First Lien, USR Parent Inc., Retail2022-12-310001544206First Lien, Westfall Technik, Inc., Chemicals, Plastics & Rubber2022-12-310001544206First Lien, Westfall Technik, Inc., Chemicals, Plastics & Rubber 22022-12-310001544206First Lien, Wineshipping.com LLC, Beverage & Food2022-12-310001544206First Lien, Yellowstone Buyer Acquisition, LLC, Consumer Goods: Durable2022-12-310001544206First Lien, YLG Holdings, Inc., Consumer Services2022-12-310001544206us-gaap:InvestmentUnaffiliatedIssuerMembercsl:DebtSecuritiesFirstLienMember2022-12-310001544206csl:DebtSecuritiesSecondLienMembercsl:InvestmentTypeConcentrationRiskMemberus-gaap:InvestmentUnaffiliatedIssuerMembercsl:InvestmentsAtFairValueMember2022-01-012022-12-310001544206Second Lien, 11852604 Canada Inc. (Canada), Healthcare & Pharmaceuticals2022-12-310001544206Second Lien, AI Convoy S.A.R.L (United Kingdom), Aerospace & Defense2022-12-310001544206Second Lien, Aimbridge Acquisition Co., Inc., Leisure Products & Services2022-12-310001544206Second Lien, AP Plastics Acquisition Holdings, LLC, Chemicals, Plastics & Rubber2022-12-310001544206Second Lien, AQA Acquisition Holdings, Inc., High Tech Industries2022-12-310001544206Second Lien, Blackbird Purchaser, Inc., Capital Equipment2022-12-310001544206Second Lien, Brave Parent Holdings, Inc., Software2022-12-310001544206Second Lien, Drilling Info Holdings, Inc., Energy: Oil & Gas2022-12-310001544206Second Lien, Jazz Acquisition, Inc., Aerospace & Defense2022-12-310001544206Second Lien, Outcomes Group Holdings, Inc., Business Services2022-12-310001544206Second Lien, PAI Holdco, Inc., Automotive2022-12-310001544206Second Lien, Peraton Corp., Aerospace & Defense2022-12-310001544206Second Lien, Quartz Holding Company, Software2022-12-310001544206Second Lien, Stonegate Pub Company Bidco Limited (United Kingdom), Beverage & Food2022-12-310001544206Second Lien, TruGreen Limited Partnership, Consumer Service2022-12-310001544206Second Lien, World 50, Inc., Business Services2022-12-310001544206csl:DebtSecuritiesSecondLienMemberus-gaap:InvestmentUnaffiliatedIssuerMember2022-12-310001544206csl:InvestmentTypeConcentrationRiskMemberus-gaap:InvestmentUnaffiliatedIssuerMembercsl:InvestmentsAtFairValueMemberus-gaap:EquitySecuritiesMember2022-01-012022-12-310001544206Equity Investments, ANLG Holdings, LLC, Capital Equipment2022-12-310001544206Equity Investments, Appriss Health, LLC, Healthcare & Pharmaceuticals2022-12-310001544206Equity Investments, Atlas Ontario LP (Canada), Business Services2022-12-310001544206Equity Investments, Avenu Holdings, LLC, Sovereign & Public Finance2022-12-310001544206Equity Investments, Blackbird Holdco, Inc, Capital Equipment2022-12-310001544206Equity Investments, Buckeye Parent, LLC, Automotive2022-12-310001544206Equity Investments, Chartis Holding, LLC, Business Services2022-12-310001544206Equity Investments, CIP Revolution Holdings, LLC, Media: Advertising, Printing & Publishing2022-12-310001544206Equity Investments, Cority Software Inc. (Canada), Software2022-12-310001544206Equity Investments, Derm Growth Partners III, LLC, Healthcare & Pharmaceuticals2022-12-310001544206Equity Investments, Diligent Corporation, Telecommunications2022-12-310001544206Equity Investments, ECP Parent, LLC, Healthcare & Pharmaceuticals2022-12-310001544206Equity Investments, GB Vino Parent, L.P., Beverage & Food2022-12-310001544206Equity Investments, Integrity Marketing Group, LLC, Diversified Financial Services2022-12-310001544206Equity Investments, K2 Insurance Services, LLC, Diversified Financial Services2022-12-310001544206Equity Investments, Legacy.com, Inc., High Tech Industries2022-12-310001544206Equity Investments, NearU Holdings LLC, Consumer Services2022-12-310001544206Equity Investments, Holding Company LLC, Construction & Building2022-12-310001544206Equity Investments, North Haven Goldfinch Topco, LLC, Containers, Packaging & Glass2022-12-310001544206Equity Investments, Pascal Ultimate Holdings, L.P, Capital Equipment2022-12-310001544206Equity Investments, Picard Parent, Inc., High Tech Industries2022-12-310001544206Equity Investments, Profile Holdings I, LP, Chemicals, Plastics & Rubber2022-12-310001544206Equity Investments, Sinch AB (Sweden), High Tech Industries2022-12-310001544206Equity Investments, Tailwind HMT Holdings Corp., Energy: Oil & Gas2022-12-310001544206Equity Investments, Talon MidCo 1 Limited, Software2022-12-310001544206Equity Investments, Tank Holding Corp., Capital Equipment2022-12-310001544206Equity Investments, Titan DI Preferred Holdings, Inc., Energy: Oil & Gas2022-12-310001544206Equity Investments, Turbo Buyer, Inc., Automotive2022-12-310001544206Equity Investments, U.S. Legal Support Investment Holdings, LLC, Business Services2022-12-310001544206Equity Investments, Unifrutti Financing PLC (Cyprus), Beverage & Food 12022-12-310001544206Equity Investments, Unifrutti Financing PLC (Cyprus), Beverage & Food 22022-12-310001544206Equity Investments, W50 Parent LLC, Business Services2022-12-310001544206Equity Investments, Zenith American Holding, Inc., Business Services2022-12-310001544206us-gaap:InvestmentUnaffiliatedIssuerMemberus-gaap:EquitySecuritiesMember2022-12-310001544206us-gaap:InvestmentUnaffiliatedIssuerMember2022-12-310001544206csl:InvestmentTypeConcentrationRiskMembercsl:InvestmentsAtFairValueMemberus-gaap:InvestmentAffiliatedIssuerNoncontrolledMembercsl:DebtSecuritiesFirstLienMember2022-01-012022-12-310001544206First Lien, Direct Travel, Inc., Leisure Products & Services 12022-12-310001544206First Lien, Direct Travel, Inc., Leisure Products & Services 22022-12-310001544206us-gaap:InvestmentAffiliatedIssuerNoncontrolledMembercsl:DebtSecuritiesFirstLienMember2022-12-310001544206csl:InvestmentTypeConcentrationRiskMembercsl:InvestmentsAtFairValueMemberus-gaap:InvestmentAffiliatedIssuerNoncontrolledMemberus-gaap:EquitySecuritiesMember2022-01-012022-12-310001544206Equity Investments, Direct Travel, Inc., Leisure Products & Services2022-12-310001544206us-gaap:InvestmentAffiliatedIssuerNoncontrolledMemberus-gaap:EquitySecuritiesMember2022-12-310001544206us-gaap:InvestmentAffiliatedIssuerNoncontrolledMember2022-12-310001544206csl:InvestmentTypeConcentrationRiskMemberus-gaap:OtherThanSecuritiesInvestmentMembercsl:InvestmentsAtFairValueMemberus-gaap:InvestmentAffiliatedIssuerControlledMember2022-01-012022-03-310001544206Investment Funds, Middle Market Credit Fund II, LLC, Member's Interest, Telecommunications2022-12-310001544206Investment Funds, Middle Market Credit Fund, LLC, Subordinated Loan and Member's Interest, Investment Funds2022-12-310001544206Investment Funds, Middle Market Credit Fund, Mezzanine Loan, Investment Funds2022-12-310001544206us-gaap:OtherThanSecuritiesInvestmentMemberus-gaap:InvestmentAffiliatedIssuerControlledMember2022-12-310001544206us-gaap:InvestmentAffiliatedIssuerControlledMember2022-12-310001544206csl:A30DayLIBORMember2022-12-310001544206csl:A90DayLIBORMember2022-12-310001544206csl:A180DayLIBORMember2022-12-310001544206csl:A30DaySOFRMember2022-12-310001544206csl:A90DaySOFRMember2022-12-310001544206us-gaap:EquitySecuritiesMember2022-12-310001544206Middle Market Credit Fund II, LLC, Member's Interest2021-12-310001544206Middle Market Credit Fund II, LLC, Member's Interest2022-01-012022-12-310001544206Middle Market Credit Fund, LLC, Subordinated Loan and Member's Interest2021-12-310001544206Middle Market Credit Fund, LLC, Subordinated Loan and Member's Interest2022-01-012022-12-310001544206Middle Market Credit Fund, Mezzanine Loan2021-12-310001544206Middle Market Credit Fund, Mezzanine Loan2022-01-012022-12-310001544206Middle Market Credit Fund, Mezzanine Loan2022-12-310001544206csl:MiddleMarketCreditFundLLCAndMiddleMarketCreditFundIILLCMemberus-gaap:InvestmentAffiliatedIssuerControlledMember2021-12-310001544206csl:MiddleMarketCreditFundLLCAndMiddleMarketCreditFundIILLCMemberus-gaap:InvestmentAffiliatedIssuerControlledMember2022-01-012022-12-310001544206SolAero Technologies Corp. (Priority Facilities)2021-12-310001544206SolAero Technologies Corp. (Priority Facilities)2022-01-012022-12-310001544206SolAero Technologies Corp. (Priority Facilities)2022-12-310001544206SolAero Technologies Corp. (A1 Term Loan)2021-12-310001544206SolAero Technologies Corp. (A1 Term Loan)2022-01-012022-12-310001544206SolAero Technologies Corp. (A1 Term Loan)2022-12-310001544206SolAero Technologies Corp. (A2 Term Loan)2021-12-310001544206SolAero Technologies Corp. (A2 Term Loan)2022-01-012022-12-310001544206SolAero Technologies Corp. (A2 Term Loan)2022-12-310001544206SolAero Technologies Corp. (Equity)2021-12-310001544206SolAero Technologies Corp. (Equity)2022-01-012022-12-310001544206SolAero Technologies Corp. (Equity)2022-12-310001544206csl:SolaeroTechnologyCorpMemberus-gaap:InvestmentAffiliatedIssuerControlledMember2021-12-310001544206csl:SolaeroTechnologyCorpMemberus-gaap:InvestmentAffiliatedIssuerControlledMember2022-01-012022-12-310001544206csl:SolaeroTechnologyCorpMemberus-gaap:InvestmentAffiliatedIssuerControlledMember2022-12-310001544206Direct Travel, Inc.2021-12-310001544206Direct Travel, Inc.2022-01-012022-12-310001544206Direct Travel, Inc. (2)2021-12-310001544206Direct Travel, Inc. (2)2022-01-012022-12-310001544206Direct Travel, Inc. (2)2022-12-310001544206Direct Travel, Inc. (Equity)2021-12-310001544206Direct Travel, Inc. (Equity)2022-01-012022-12-310001544206us-gaap:InvestmentAffiliatedIssuerNoncontrolledMembercsl:DirectTravelIncMember2021-12-310001544206us-gaap:InvestmentAffiliatedIssuerNoncontrolledMembercsl:DirectTravelIncMember2022-01-012022-12-310001544206First and Second Lien Debt, ADPD Holdings, LLC, Delayed Draw2022-12-310001544206First and Second Lien Debt, ADPD Holdings, LLC, Revolver2022-12-310001544206First and Second Lien Debt, Advanced Web Technologies Holding Company, Revolver2022-12-310001544206First and Second Lien Debt, Advanced Web Technologies Holding Company, Delayed Draw2022-12-310001544206First and Second Lien Debt, Airnov, Inc., Revolver2022-12-310001544206First and Second Lien Debt, Alpine Acquisition Corp II, Revolver2022-12-310001544206First and Second Lien Debt, American Physician Partners, LLC, Delayed Draw2022-12-310001544206First and Second Lien Debt, Analogic Corporation, Revolver2022-12-310001544206First and Second Lien Debt, Applied Technical Services, LLC, Revolver2022-12-310001544206First and Second Lien Debt, Appriss Health, LLC, Revolver2022-12-310001544206First and Second Lien Debt, Apptio, Inc., Revolver2022-12-310001544206First and Second Lien Debt, Ascend Buyer, LLC, Revolver2022-12-310001544206First and Second Lien Debt, Associations, Inc., Revolver2022-12-310001544206First and Second Lien Debt, Atlas AU Bidco Pty Ltd (Australia), Revolver2022-12-310001544206First and Second Lien Debt, Avalara, Inc., Revolver2022-12-310001544206First and Second Lien Debt, Blackbird Purchaser, Inc., Delayed Draw2022-12-310001544206First and Second Lien Debt, BlueCat Networks, Inc. (Canada), Delayed Draw2022-12-310001544206First and Second Lien Debt, BMS Holdings III Corp., Delayed Draw2022-12-310001544206First and Second Lien Debt, Bradyifs Holdings, LLC, Revolver2022-12-310001544206First and Second Lien Debt, Bradyifs Holdings, LLC, Delayed Draw2022-12-310001544206First and Second Lien Debt, Bubbles Bidco S.P.A. (Italy), Delayed Draw2022-12-310001544206First and Second Lien Debt, Bubbles Bidco S.P.A. (Italy), Revolver2022-12-310001544206First and Second Lien Debt, Celerion Buyer, Inc., Revolver2022-12-310001544206First and Second Lien Debt, Celerion Buyer, Inc., Delayed Draw2022-12-310001544206First and Second Lien Debt, Chartis Holding, LLC, Revolver2022-12-310001544206First and Second Lien Debt, Chemical Computing Group ULC (Canada), Revolver2022-12-310001544206First and Second Lien Debt, Comar Holding Company, LLC, Revolver2022-12-310001544206First and Second Lien Debt, Cority Software Inc. (Canada), Revolver2022-12-310001544206First and Second Lien Debt, CPI Intermediate Holdings, Inc., Delayed Draw2022-12-310001544206First and Second Lien Debt, CST Holding Company, Revolver2022-12-310001544206First and Second Lien Debt, DCA Investment Holding LLC, Delayed Draw2022-12-310001544206First and Second Lien Debt, Denali Midco 2, LLC, Delayed Draw2022-12-310001544206First and Second Lien Debt, Diligent Corporation, Revolver2022-12-310001544206First and Second Lien Debt, Direct Travel, Inc., Delayed Draw2022-12-310001544206First and Second Lien Debt, Dwyer Instruments, Inc., Revolver2022-12-310001544206First and Second Lien Debt, Dwyer Instruments, Inc., Delayed Draw2022-12-310001544206First and Second Lien Debt, Eliassen Group, LLC, Delayed Draw2022-12-310001544206First and Second Lien Debt, Ellkay, LLC, Revolver2022-12-310001544206First and Second Lien Debt, EPS Nass Parent, Inc., Revolver2022-12-310001544206First and Second Lien Debt, EPS Nass Parent, Inc., Delayed Draw2022-12-310001544206First and Second Lien Debt, EvolveIP, LLC, Revolver2022-12-310001544206First and Second Lien Debt, Excel Fitness Holdings, Inc., Revolver2022-12-310001544206First and Second Lien Debt, Excelitas Technologies Corp., Revolver2022-12-310001544206First and Second Lien Debt, Excelitas Technologies Corp., Delayed Draw2022-12-310001544206First and Second Lien Debt, FPG Intermediate Holdco, LLC, Delayed Draw2022-12-310001544206First and Second Lien Debt, Greenhouse Software, Inc., Revolver2022-12-310001544206First and Second Lien Debt, Hadrian Acquisition Limited (United Kingdom), Delayed Draw2022-12-310001544206First and Second Lien Debt, Harbour Benefit Holdings, Inc., Revolver2022-12-310001544206First and Second Lien Debt, Heartland Home Services, Inc., Delayed Draw2022-12-310001544206First and Second Lien Debt, Heartland Home Services, Inc., Revolver2022-12-310001544206First and Second Lien Debt, Hercules Borrower LLC, Revolver2022-12-310001544206First and Second Lien Debt, Hoosier Intermediate, LLC, Revolver2022-12-310001544206First and Second Lien Debt, HS Spa Holdings Inc., Revolver2022-12-310001544206First and Second Lien Debt, iCIMS, Inc., Revolver2022-12-310001544206First and Second Lien Debt, iCIMS, Inc., Delayed Draw2022-12-310001544206First and Second Lien Debt, IQN Holding Corp., Delayed Draw2022-12-310001544206First and Second Lien Debt, IQN Holding Corp., Revolver2022-12-310001544206First and Second Lien Debt, Jeg's Automotive, LLC, Delayed Draw2022-12-310001544206First and Second Lien Debt, K2 Insurance Services, LLC, Revolver2022-12-310001544206First and Second Lien Debt, Kaseya, Inc., Revolver2022-12-310001544206First and Second Lien Debt, Kaseya, Inc., Delayed Draw2022-12-310001544206First and Second Lien Debt, Lifelong Learner Holdings, LLC, Revolver2022-12-310001544206First and Second Lien Debt, Liqui-Box Holdings, Inc., Revolver2022-12-310001544206First and Second Lien Debt, LVF Holdings, Inc., Revolver2022-12-310001544206First and Second Lien Debt, LVF Holdings, Inc., Delayed Draw2022-12-310001544206First and Second Lien Debt, Material Holdings, LLC, Delayed Draw2022-12-310001544206First and Second Lien Debt, Material Holdings, LLC, Revolver2022-12-310001544206First and Second Lien Debt, Medical Manufacturing Technologies, LLC, Revolver2022-12-310001544206First and Second Lien Debt, Medical Manufacturing Technologies, LLC, Delayed Draw2022-12-310001544206First and Second Lien Debt, NEFCO Holding Company LLC, Delayed Draw2022-12-310001544206First and Second Lien Debt, NEFCO Holding Company LLC, Revolver2022-12-310001544206First and Second Lien Debt, NMI AcquisitionCo, Inc., Revolver2022-12-310001544206First and Second Lien Debt, North Haven Fairway Buyer, LLC, Revolver2022-12-310001544206First and Second Lien Debt, North Haven Stallone Buyer, LLC, Delayed Draw2022-12-310001544206First and Second Lien Debt, Oak Purchaser, Inc., Delayed Draw2022-12-310001544206First and Second Lien Debt, Oak Purchaser, Inc., Revolver2022-12-310001544206First and Second Lien Debt, PF Atlantic Holdco 2, LLC, Delayed Draw2022-12-310001544206First and Second Lien Debt, PF Atlantic Holdco 2, LLC, Revolver2022-12-310001544206First and Second Lien Debt, PPT Management Holdings, LLC, Revolver2022-12-310001544206First and Second Lien Debt, Prophix Software Inc. (Canada), Revolver2022-12-310001544206First and Second Lien Debt, PXO Holdings I Corp., Delayed Draw2022-12-310001544206First and Second Lien Debt, PXO Holdings I Corp., Revolver2022-12-310001544206First and Second Lien Debt, QNNECT, LLC, Delayed Draw2022-12-310001544206First and Second Lien Debt, Quantic Electronics, LLC, Revolver2022-12-310001544206First and Second Lien Debt, Quantic Electronics, LLC, Delayed Draw2022-12-310001544206First and Second Lien Debt, Radwell Parent, LLC, Revolver2022-12-310001544206First and Second Lien Debt, RSC Acquisition, Inc., Revolver2022-12-310001544206First and Second Lien Debt, RSC Acquisition, Inc., Delayed Draw2022-12-310001544206First and Second Lien Debt, Sapphire Convention, Inc., Revolver2022-12-310001544206First and Second Lien Debt, SCP Eye Care HoldCo, LLC, Revolver2022-12-310001544206First and Second Lien Debt, SCP Eye Care HoldCo, LLC, Delayed Draw2022-12-310001544206First and Second Lien Debt, Smarsh Inc., Revolver2022-12-310001544206First and Second Lien Debt, Smarsh Inc., Delayed Draw2022-12-310001544206First and Second Lien Debt, Spotless Brands, LLC, Revolver2022-12-310001544206First and Second Lien Debt, Tank Holding Corp., Revolver2022-12-310001544206First and Second Lien Debt, The Carlstar Group LLC, Revolver2022-12-310001544206First and Second Lien Debt, Trader Corporation (Canada), Revolver2022-12-310001544206First and Second Lien Debt, Trafigura Trading LLC, Revolver2022-12-310001544206First and Second Lien Debt, Tufin Software North America, Inc., Revolver2022-12-310001544206First and Second Lien Debt, Tufin Software North America, Inc., Delayed Draw2022-12-310001544206First and Second Lien Debt, Turbo Buyer, Inc., Delayed Draw2022-12-310001544206First and Second Lien Debt, Turbo Buyer, Inc., Revolver2022-12-310001544206First and Second Lien Debt, U.S. Legal Support, Inc., Delayed Draw2022-12-310001544206First and Second Lien Debt, U.S. Legal Support, Inc., Revolver2022-12-310001544206First and Second Lien Debt, Wineshipping.com LLC, Delayed Draw2022-12-310001544206First and Second Lien Debt, Wineshipping.com LLC, 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