UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the

Securities Exchange Act of 1934

Date of report (Date of earliest event reported) December 14, 2023

ARES CAPITAL CORPORATION

(Exact Name of Registrant as Specified in Charter)

Registrant’s telephone number, including area code (212) 750-7300

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

¨    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

¨    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

¨    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

¨    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Indicate by check mark whether the registrant is an emerging growth company as defined in as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

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 complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Item 1.01 Entry into a Material Definitive Agreement.

Sixth Amendment to Ares Capital BNP Funding Facility

On December 14, 2023, Ares Capital Corporation (the “Company”) and ARCC FB Funding LLC, a wholly owned subsidiary of the Company (“AFB LLC”), amended the document governing AFB LLC’s revolving funding facility (the “BNP Funding Facility”) by entering into a Sixth Amendment to the Revolving Credit and Security Agreement (the “BNP Amendment”). The BNP Amendment among other things (a) increased the commitments under the BNP Funding Facility from $790 million to $865 million and (b) modified certain concentration limitations and the eligible loan criteria. The other terms of the BNP Funding Facility remained materially unchanged.

The description above is only a summary of the material provisions of the BNP Amendment and is qualified in its entirety by reference to a copy of the BNP Amendment, which is filed as Exhibit 10.1 to this current report on Form 8-K and incorporated by reference herein.

Item 2.03 Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant.

The information set forth in Item 1.01 is incorporated by reference into this Item 2.03.

Item 9.01 Financial Statements and Exhibits.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.