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 20, 2025

Sixth Street Specialty Lending, Inc.

(Exact name of registrant as specified in charter)


Delaware	001-36364	27-3380000
(State or Other Jurisdiction of Incorporation)	(Commission File Number)	(I.R.S. Employer Identification No.)

2100 McKinney Avenue, Suite 1500
Dallas, TX		75201
(Address of Principal Executive Offices)		(zip code)

Registrant’s telephone number, including area code: (469) 621-3001

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:

☐	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:

Title of each class

Trading

Symbol(s)

Name of each exchange

on which registered

Common Stock, par value $0.01 per share

TSLX

The New York Stock Exchange

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 5.07 – Submission of Matters to a Vote of Security Holders

Special Meeting of Stockholders

On June 20, 2025, the Company reconvened a special meeting of stockholders. Stockholders considered one proposal as described in the Company’s proxy statement filed on April 10, 2025. The final results of the voting on the matter submitted to stockholders at the special meeting are set forth below.

Proposal 1 – Sales of Common Stock Below NAV. The stockholders approved the proposal to authorize the Company to sell or otherwise issue shares of its common stock at a price below its then-current net asset value per share in one or more offerings, in each case subject to the approval of its board of directors and subject to certain conditions as set forth in the proxy statement (including that the number of shares issued does not exceed 25% of the Company’s then-outstanding common stock immediately prior to each such offering), by the vote shown below.

The vote on the proposal, including affiliated and unaffiliated shares, was as follows:


Votes “For”	Votes “Against”	Abstentions	Broker Non-Votes
43,666,863	4,445,822	1,962,475	0

The vote on the proposal, adjusted to exclude 3,029,209 affiliated shares, was as follows:


Votes “For”	Votes “Against”	Abstentions	Broker Non-Votes
41,029,590	4,445,822	1,570,539	0

SIGNATURES

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.


	SIXTH STREET SPECIALTY LENDING, INC.
	(Registrant)

Date: June 20, 2025	By:	/s/ Ian Simmonds
	Name:	Ian Simmonds
	Title:	Chief Financial Officer

Sixth Street Specialty Lending, Inc. 8-K