Oaktree Specialty Lending Corp 2024年度报告

þANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934For the fiscal year endedSeptember30, 2025 OR oTRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934For the transition period from _____ to _____ COMMISSION FILE NUMBER:1-33901Oaktree Specialty Lending Corporation (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER) Delaware(State or jurisdiction ofincorporation or organization) REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE:(213)830-6300 SECURITIES REGISTERED PURSUANT TO SECTION12(b) OF THE ACT: Name of Each Exchangeon Which RegisteredThe Nasdaq Stock Market LLC Title of Each ClassTrading Symbol(s)Common Stock, par value $0.01 per shareOCSL SECURITIES REGISTERED PURSUANT TO SECTION 12(g) OF THE ACT: None Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule405 of the SecuritiesAct.YesþNo¨ Indicate by check mark if the registrant is not required to file reports pursuant to Section13 or Section15(d) of theAct.Yes¨Noþ Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the SecuritiesExchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2)has been subject to such filing requirements for the past 90 days.YesþNo¨ Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuantto Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant wasrequired to submit such files).YesþNo¨ Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reportingcompany, or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company" and"emerging growth company" in Rule 12b-2 of the Exchange Act. Large accelerated filerþAcceleratedfiler¨Non-accelerated filer¨Smaller reporting company☐ Emerging growth company☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complyingwith any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.¨ Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness ofits internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered publicaccounting firm that prepared or issued its audit report.þ If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrantincluded in the filing reflect the correction of an error to previously issued financial statements.¨ Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-basedcompensation received by any of the registrant’s executive officers during the relevant recovery period pursuant to §240.10D-1(b).¨ Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act)Yes¨Noþ The aggregate market value of the registrant’s common stock held by non-affiliates of the registrant as of March 31, 2025 was$1,231.0million. For the purposes of calculating the aggregate market value of common stock held by non-affiliates, the registrant hasexcluded shares held by its current directors and officers. The registrant had88,085,523shares of common stock outstanding as of November14, 2025. DOCUMENTS INCORPORATED BY REFERENCE Portions of the registrant’s definitive Proxy Statement relating to the registrant’s 2026 Annual Meeting of Stockholders, to be filed withthe Securities and Exchange Commission, or the SEC, within 120 days following the end of the Company’s fiscal year, are incorporated byreference in Part III of this Annual Report on Form 10-K as indicated herein. OAKTREE SPECIALTY LENDING CORPORATIONFORM 10-K FOR THE YEAR ENDED SEPTEMBER 30, 2025 TABLE OF CONTENTS PARTI Item1.BusinessItem1A.Risk FactorsItem1B.Unresolved Staff CommentsItem1C.CybersecurityItem2.PropertiesItem3.Legal ProceedingsItem4.Mine Safety DisclosuresPARTIIItem5.Market for Registrant's Common Equity, Related Stockholder Matters and Issuer Purchases of Equity SecuritiesItem6.[Reserved]Item7.Management’s Discussion and Analysis of Financial Condition and Results of OperationsItem7A.Quantitative and Qualitative Disclosures about Market RiskItem8.Financial Statements and Supplementary DataItem9.Changes in the Disagreements with Accountants on Accounting and Financial DisclosureItem9A.Controls and ProceduresItem9B.Other InformationItem9C.Disclosure Regarding Foreign Jurisdictions that