SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person* Peck Joshua (Last) (First) (Middle) C/O SIXTH STREET PARTNERS, LLC 2100 MCKINNEY AVENUE, SUITE 1500 (Street) DALLAS TX 75201 (City) (State) (Zip)	2. Date of Event Requiring Statement (Month/Day/Year) 06/30/2022	3. Issuer Name and Ticker or Trading Symbol Sixth Street Specialty Lending, Inc. [ TSLX ]
		4. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director 10% Owner X Officer (give title below) Other (specify below) Vice President	5. If Amendment, Date of Original Filed (Month/Day/Year)
			6. Individual or Joint/Group Filing (Check Applicable Line) X Form filed by One Reporting Person Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	300	D(1)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Mr. Peck is Vice President of the Issuer and an employee of an affiliate of Sixth Street Specialty Lending Advisers, LLC. Sixth Street Specialty Lending Advisers, LLC directly holds an aggregate of 2,714,226 shares of Common Stock of the Issuer. Mr. Peck disclaims beneficial ownership of the shares of Common Stock that are or may be directly held by Sixth Street Specialty Lending Advisers, LLC or any of its respective affiliates. Pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, as amended (the "Exchange Act"), this filing shall not be deemed an admission that Mr. Peck is, for purposes of Section 16 of the Exchange Act or otherwise, the beneficial owner of any securities of the Issuer directly held by Sixth Street Specialty Lending Advisers, LLC or any of its affiliates.

	/s/ Joshua Peck	07/11/2022
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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