UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the

Securities Exchange Act of 1934

Date of Report: December 21, 2020

(Date of earliest event reported)

WhiteHorse Finance, Inc.

(Exact name of registrant as specified in its charter)

(305) 381-6999

(Registrant’s telephone number, including area code)

Not Applicable

(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:

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 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

On December 21, 2020, WhiteHorse Finance Credit I, LLC (“WhiteHorse Credit”), a wholly owned subsidiary of WhiteHorse Finance, Inc. (the “Company”), amended the terms of the Fourth Amended and Restated Loan Agreement, dated November 22, 2019, by and among WhiteHorse Credit, as borrower, the Company, as portfolio manager, JPMorgan Chase Bank, National Association, as administrative agent and lender, and the financial providers party thereto (as amended, the “Amended Loan Agreement”). The Amended Loan Agreement, among other things, (i) increases the minimum funding amount from $175 million to $200 million, (ii) increases the size of the facility from $250 million to $285 million and retains an accordion feature which allows for the expansion of the borrowing limit up to $350 million and (iii) provides for the implementation of certain changes relating to the transition away from the London Interbank Offered Rate in the market.

The description above is only a summary of the material terms included in the Amended Loan Agreement and is qualified in its entirety by reference to a copy of the Amended Loan Agreement, which is filed as Exhibit 10.1 to this Current Report on Form 8-K.

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

The information in Item 1.01 of this Current Report on Form 8-K is incorporated by reference into this Item 2.03.

Forward-Looking Statements

This Current Report on Form 8-K may contain “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Statements other than statements of historical facts included in this Current Report on Form 8-K may constitute forward-looking statements and are not guarantees of future performance or results and involve a number of risks and uncertainties. Actual results may differ materially from those in the forward-looking statements as a result of a number of factors, including those described from time to time in filings with the Securities and Exchange Commission. The Company undertakes no duty to update any forward-looking statement made herein. All forward-looking statements speak only as of the date of this Current Report on Form 8-K.

Item 9.01. Financial Statements and Exhibits

(d) 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.