
ANNUAL REPORT PURSUANT TO SECTION13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF1934For the fiscal year ended December 31, 2025ORTRANSITION REPORT PURSUANT TO SECTION13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF1934For the transition period from_____ to_____Commission File No.814-00663__________________________________________________________________________ ARES CAPITAL CORPORATION (Exact name of registrant as specified in its charter) Maryland (State or other jurisdiction ofincorporation or organization) 245 Park Avenue, 44th Floor, New York, New York 10167(Address of principal executive offices) (Zip Code)(212)750-7300(Registrant’s telephone number, including area code) Securities registered pursuant to Section12(b) of the Act: Securities registered pursuant to Section12(g) of the Act: None Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule405 of the Securities Act.YesNo Indicate by check mark if the registrant is not required to file reports pursuant to Section13 or Section15(d) of the Act.YesNo Indicate by check mark whether the registrant (1)has filed all reports required to be filed by Section13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12months (or forsuch shorter period that the registrant was required to file such reports), and (2)has been subject to such filing requirements for the past 90days:YesNo Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule405 of RegulationS-T (Section §232.405 ofthis chapter) during the preceding 12months (or for such shorter period that the registrant was required to submit such files).YesNo Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See thedefinitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growth company” in Rule12b-2 of the Exchange Act: Large accelerated filerAcceleratedfilerNon-acceleratedfilerSmallerreportingcompanyEmerging Growth Company If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period complying with any new or revised financial accounting standardsprovided 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 of its internal control over financial reporting underSection 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report. YesNo If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect the correction of an errorto previously issued financial statements. Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of the registrant’s executiveofficers 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 Rule12b-2 of the Exchange Act).YesNo The aggregate market value of the voting stock held by non-affiliates of the registrant on June30, 2025, based on the closing price on that date of $21.96 on The NASDAQ Global SelectMarket, was approximately $15,415,428,367. As of January29, 2026, there were 718,022,845 shares of the registrant’s common stock outstanding. Portions of the registrant’s Proxy Statement for its 2026 Annual Meeting of Stockholders to be filed not later than 120days after the end of the fiscal year covered by this Annual Report onForm10-K are incorporated by reference into PartIII of this Form10-K. ARES CAPITAL CORPORATION TABLE OF CONTENTS Part I.Item 1. BusinessItem 1A. Risk FactorsItem 1B. Unresolved Staff CommentsItem 1C. CybersecurityItem 2. PropertiesItem 3. Legal ProceedingsItem 4. Mine Safety DisclosuresPart II. Item 5. Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity SecuritiesItem 6. [Reserved]Item 7. Management’s Discussion and Analysis of Financial Condition and Results of OperationsItem 7A. Quantitative and Qualitative Disclosures about Market RiskItem 8. Financial Statements and Supplementary DataItem 9. Changes in and Disagreements with Accountants on Accounting and Financial DisclosureItem 9A. Controls and ProceduresItem 9B. Other InformationItem 9C. Disclosure Regarding Foreign Jurisdictions that Prevent InspectionsPart III.Item 10. Directors, Executive Officers and Corporate GovernanceItem 11. Executive CompensationItem 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder M