Chairman Easterly to retire as Sixth Street (TSLX) reshapes leadership roles

Rhea-AI Filing Summary

Sixth Street Specialty Lending, Inc. announced that Chairman of the Board Joshua Easterly will not seek re-election at the 2026 Annual Meeting of Shareholders, scheduled for May 21, 2026. He will continue to serve as Chairman and director until his current term expires at that meeting.

Easterly has decided to retire from Sixth Street Partners, LLC effective June 30, 2026, and the Board plans to appoint a successor Chairman on or about the Annual Meeting date. The company states his decision is not due to any disagreement over operations, policies, or practices.

At the company’s investment adviser, Sixth Street Specialty Lending Advisers, LLC, Robert “Bo” Stanley has been named Co-Chief Investment Officer, while Easterly will step down as Co-Chief Investment Officer as of June 30, 2026. The firm emphasizes continuity, noting that investment decisions continue to be made by its Investment Review Committee and highlighting the leadership of Stanley, Co-Head of Direct Lending Michael Griffin, and Co-Founding Partner, CEO, and Co-Chief Investment Officer Alan Waxman. An internal letter from Stanley to the direct lending team is furnished as an exhibit.

Insights

Credit and BDC governance analyst

Key founder-chairman retires with structured succession and stated continuity.

Sixth Street Specialty Lending, Inc. reports that long-serving Chairman and Co-Chief Investment Officer Joshua Easterly will retire from Sixth Street on June 30, 2026 and not stand for re-election at the May 21, 2026 Annual Meeting. He remains Chairman until the meeting, and the Board plans to appoint a successor around that date, indicating an orderly governance transition.

On the advisory side, Robert “Bo” Stanley is named Co-Chief Investment Officer of Sixth Street Specialty Lending Advisers, LLC, while Easterly steps down from that role on June 30, 2026. The company highlights that its investment team continues to be led by Stanley, Co-Head of Direct Lending Michael Griffin, and Co-Founding Partner, CEO, and Co-Chief Investment Officer Alan Waxman, with investment decisions made by an Investment Review Committee.

The filing explicitly notes that Easterly’s choice not to seek re-election is not due to any disagreement over operations, policies, or practices, and includes an internal letter emphasizing that the firm’s mission is unchanged. Overall, this points to a planned leadership handoff rather than an abrupt change, though investors may watch future filings for any strategic or performance shifts under the refreshed leadership group.

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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): February 19, 2026

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 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

On February 19, 2026, Joshua Easterly, the Chairman of the Board of Directors (the “Board”) of Sixth Street Specialty Lending, Inc. (“we,” “us,” “our,” or the “Company”), notified the Company of his decision to not seek re-election to the Board at the Company’s upcoming 2026 Annual Meeting of Shareholders, which is scheduled to be held on May 21, 2026 (the “Annual Meeting”).

Mr. Easterly has decided to retire from Sixth Street Partners, LLC (“Sixth Street”), as of June 30, 2026.

Mr. Easterly will continue to serve as Chairman of the Board and as a director of the Company until the Annual Meeting, at which time his current term will expire. Mr. Easterly’s decision to not seek re-election is not the result of any disagreement with the Company on any matter relating to the Company’s operations, policies, or practices.

The Board intends to appoint a successor Chairman of the Board on or about the date of the Annual Meeting.

Item 7.01. Regulation FD Disclosure.

A copy of Chief Executive Officer Robert “Bo” Stanley’s internal letter to the Sixth Street Direct Lending team, dated February 23, 2026 is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference.

The information in Item 7.01 of this Current Report on Form 8-K, including Exhibit 99.1 furnished herewith, is being furnished and shall not be deemed “filed” for any purpose of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of such Section. The information in this Current Report on Form 8-K shall not be deemed to be incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.

Item 8.01 Other Events.

Sixth Street Specialty Lending Advisers, LLC, a Delaware limited liability company (the “Adviser”), is our investment adviser. Robert “Bo” Stanley has been named Co-Chief Investment Officer of the Adviser and Joshua Easterly will step down as Co-Chief Investment Officer as of June 30, 2026. Our investment team continues to be led by Mr. Stanley, Co-Head of Direct Lending Michael Griffin, and our Adviser’s Co-Founding Partner, Chief Executive Officer, and Co-Chief Investment Officer Alan Waxman, all of whom have substantial experience in credit origination, underwriting and asset management. Our investment decisions continue to be made by our Investment Review Committee, which includes senior personnel of our Adviser and Sixth Street.

Item 9.01 - Financial Statements and Exhibits.

(d) Exhibits:

Exhibit Number		Description
99.1		Letter of Robert (“Bo”) Stanley, dated February 23, 2026.
104		Cover Page Interactive Data File (embedded within the Inline XBRL document).

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: February 23, 2026				By:		/s/ Ian Simmonds
				Name:		Ian Simmonds
				Title:		Chief Financial Officer

Exhibit 99.1 – Internal Letter to Sixth Street Direct Lending Team

Team,

As we announced this morning, after sixteen years at Sixth Street, Josh has made the personal decision to retire from the firm.

This is a bittersweet moment. We want to thank Josh for the tremendous contributions he’s made to our business, and for his tireless hustle and deep commitment to always creating the best possible outcomes for our investors.

On a personal level, Mike Griffin, Mike Fishman, Craig Hamrah, and I have been working together with Josh since we started our direct lending business. Josh, Fish, and I even go back to our time at Wells Fargo – more than twenty years. Josh has been a great colleague and teammate, and I look forward to our ongoing friendship.

As we’ve all been discussing together, our mission is unchanged. We’re built for this market and for the opportunity in front of us, and on behalf of Griff, Fish, Craig, Ian Simmonds, myself, and our leadership team as a whole, we could not be more confident in the capabilities of this team and the strength of our platform.

Bo

FAQ

What leadership change did Sixth Street Specialty Lending (TSLX) announce?

Sixth Street Specialty Lending announced that Chairman Joshua Easterly will not seek re-election at the 2026 Annual Meeting on May 21, 2026. He will retire from Sixth Street on June 30, 2026, and the Board plans to appoint a successor Chairman around the meeting date.

Is Joshua Easterly leaving TSLX because of a disagreement with the company?

The company states that Joshua Easterly’s decision not to seek re-election is not due to any disagreement over operations, policies, or practices. The change is described as a personal decision to retire from Sixth Street, with an orderly transition plan for board leadership.

How is TSLX’s investment leadership structured after Easterly’s retirement?

Robert “Bo” Stanley has been named Co-Chief Investment Officer of Sixth Street Specialty Lending Advisers, LLC, while Easterly steps down as Co-Chief Investment Officer on June 30, 2026. The investment team continues under Stanley, Co-Head of Direct Lending Michael Griffin, and Co-Founder, CEO, and Co-Chief Investment Officer Alan Waxman.

Who makes investment decisions for Sixth Street Specialty Lending (TSLX)?

Investment decisions are made by the company’s Investment Review Committee, which includes senior personnel of its adviser and Sixth Street. The filing emphasizes continuity in this committee’s role and the leadership of Robert “Bo” Stanley, Michael Griffin, and Alan Waxman in overseeing credit origination and asset management.

What is included in Exhibit 99.1 of this TSLX 8-K filing?

Exhibit 99.1 contains an internal letter from CEO Robert “Bo” Stanley to the Sixth Street Direct Lending team dated February 23, 2026. The letter thanks Joshua Easterly for his contributions and underscores that the firm’s mission and confidence in its team and platform remain unchanged.

When does Joshua Easterly’s term on the TSLX Board end?

Joshua Easterly will continue to serve as Chairman and director until the 2026 Annual Meeting of Shareholders, scheduled for May 21, 2026. His current term expires at that meeting, after which he will not stand for re-election, consistent with his planned retirement from Sixth Street.

Filing Exhibits & Attachments

4 documents

Press Releases

• EX-99.1 EX-99.1 2.0 KB

Other Documents

• EX-101 XBRL TAXONOMY EXTENSION SCHEMA 2.8 KB
• EX-101 XBRL TAXONOMY EXTENSION LABEL LINKBASE 17.6 KB
• EX-101 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE 11.0 KB