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):

 June 26, 2026 (June 23, 2026)

SURO CAPITAL CORP.

(Exact name of registrant as specified in its charter)

640 Fifth Avenue

12^th Floor

New York, NY 10019

(Address of principal executive offices and zip code)

Registrant’s telephone number, including area code: (650) 235-4769

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 (17 CFR §230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR §240.12b-2).

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. ☐

Articles of Amendment

On June 23, 2026, SuRo Capital Corp. (the “Company”) filed Articles of Amendment (the “Articles of Amendment”) to its Articles of Amendment and Restatement, as amended (the “Charter”), with the Maryland State Department of Assessments and Taxation. The Articles of Amendment will become effective on July 1, 2026, at which time the Company will change its name to “Neostellar Capital Corp.” (the “Name Change”). In accordance with the Maryland General Corporation Law (the “MGCL”) and the Charter, the Company’s board of directors (the “Board of Directors”) approved the Name Change and the Articles of Amendment. Stockholder approval was not required.

Trading Symbol

In connection with the Name Change, beginning on or about July 1, 2026, the trading symbols for the Company’s common stock (the “Common Stock”) and the Company’s 6.00% Notes due 2026 (the “2026 Notes”) on the Nasdaq Global Select Market will change from “SSSS” to “NSLR” and from “SSSSL” to “NSLRL,” respectively.

Third Amended and Restated Bylaws

Effective July 1, 2026, the Company will amend and restate its Second Amended and Restated Bylaws to reflect the Name Change (the “Third Amended and Restated Bylaws”). In accordance with the MGCL and the Company’s Second Amended and Restated Bylaws, the Board of Directors approved the Third Amended and Restated Bylaws. Other than changes to reflect the Name Change, the Third Amended and Restated Bylaws do not amend any provision of the Company’s Second Amended and Restated Bylaws. Stockholder approval was not required.

The foregoing descriptions of the Articles of Amendment and the Third Amended and Restated Bylaws do not purport to be complete and are qualified in their entirety by reference to the full text of the Articles of Amendment and the Third Amended and Restated Bylaws, which are attached hereto as Exhibit 3.1 and Exhibit 3.2, respectively, and are incorporated herein by reference.

SIGNATURE

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

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