Portman Ridge Finance Corp false 0001372807 0001372807 2025-05-08 2025-05-08

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 (Date of earliest event reported): May 8, 2025

Portman Ridge Finance Corporation

(Exact name of registrant as specified in its charter)

Delaware |  | 814-00735 |  | 20-5951150
(State or other jurisdiction of incorporation) |  | (Commission File Number) |  | (IRS Employer Identification No.)

650 Madison Avenue, 3rd Floor New York, New York |  | 10022
(Address of principal executive offices) |  | (Zip Code)

(Registrant’s telephone number, including area code): (212) 891-2880

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 (see General Instructions 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 Exchange Act:

Title of each class |  | Trading Symbol(s) |  | Name of each exchange on which registered
Common Stock, par value $0.01 per share |  | PTMN |  | The NASDAQ Global Select Market

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 2.02 | Results of Operations and Financial Condition.

On May 8, 2025, Portman Ridge Finance Corporation (the “Company”) issued a press release announcing its financial results for the fiscal quarter ended March 31, 2025. A copy of the press release is being furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference. Additionally, on May 9, 2025, the Company made available on its website, http://www.portmanridge.com/home, a supplemental investor presentation with respect to the earnings release. A copy of the investor presentation is being furnished as Exhibit 99.2 to this Current Report on Form 8-K and is incorporated herein by reference.

The information disclosed under this Item 2.02, including Exhibits 99.1 and 99.2 hereto, is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, and shall not be deemed incorporated by reference into any filing made under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such filing.

Item 9.01. | Financial Statements and Exhibits.

(d) Exhibits:

Exhibit Number |  | Description
99.1 |  | Press Release, dated May 8, 2025
99.2 |  | Investor Presentation, dated May 9, 2025
104 |  | Cover Page Interactive Data File (embedded within the Inline XBRL Document)

SIGNATURES

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.

PORTMAN RIDGE FINANCE CORPORATION
By: |  | /s/ Brandon Satoren
Name: |  | Brandon Satoren
Title: |  | Chief Financial Officer

Date: May 9, 2025