FS KKR Capital Corp

GENERAL

This proxy statement is furnished in connection with the solicitation of proxies by the board of directors (the “Board” or “Board of Directors”) of FS KKR Capital Corp., a Maryland corporation (the “Company”), for use at the 2026 Annual Meeting of Stockholders of the Company to be held at 11:00 a.m., Eastern Time, on June 18, 2026, at 3025 JFK Boulevard, OFC 500, Philadelphia, Pennsylvania 19104, and any adjournments or postponements thereof (the “Annual Meeting”). This proxy statement and the accompanying materials are being mailed on or about April 30, 2026 to stockholders of record described below and are available atwww.proxyvote.com.

All properly executed proxies representing shares of common stock, par value $0.001 per share, of the Company (the “Shares”) received prior to the Annual Meeting will be voted in accordance with the instructions marked thereon. If no specification is made, the Shares will be voted FOR:

(i) the election of the following individuals as Class A Directors, each of whom has been nominated for election for a three-year term expiring at the 2029 annual meeting of stockholders: (a) Michael J. Hagan, (b) Jeffrey K. Harrow, (c) James H. Kropp and (d) Elizabeth J. Sandler; (the “Director Election Proposal”);

(ii) the proposal to allow the Company in future offerings to sell its Shares below net asset value per Share in order to provide flexibility for future sales (the “Share Issuance Proposal”); and

(iii) the proposal to authorize the Company, with the approval of the Board, to issue warrants, options or rights to subscribe for, convert to, or purchase Shares in one or more offerings (the “1940 Act Section 61(a)(4) Issuance Proposal”).

Any stockholder who has given a proxy has the right to revoke it at any time prior to its exercise. Any stockholder who executes a proxy may revoke it with respect to any proposal by attending the Annual Meeting and voting his or her Shares in person, or by submitting a letter of revocation or a later-dated proxy to the Company at the above address prior to the date of the Annual Meeting.