STRS Ohio reports 6.3% stake in Sixth Street Specialty Lending (TSLX) common stock

Rhea-AI Filing Summary

State Teachers Retirement System of Ohio (STRS Ohio) reports beneficial ownership of common stock of Sixth Street Specialty Lending, Inc.

As of June 30, 2026, STRS Ohio beneficially owned 6,029,281.44 shares, representing 6.3% of the class, with sole voting and sole dispositive power over the same 6,029,281.44 shares and no shared voting or dispositive power.

Key Figures

Shares beneficially owned: 6,029,281.44 shares Percent of class owned: 6.3% Sole voting power: 6,029,281.44 shares +1 more

4 metrics

Shares beneficially owned 6,029,281.44 shares Common stock of Sixth Street Specialty Lending, Inc. beneficially owned by STRS Ohio as of June 30, 2026

Percent of class owned 6.3% Portion of Sixth Street Specialty Lending, Inc. common stock class beneficially owned by STRS Ohio

Sole voting power 6,029,281.44 shares Shares over which STRS Ohio has sole power to vote or direct the vote

Sole dispositive power 6,029,281.44 shares Shares over which STRS Ohio has sole power to dispose or direct the disposition

Key Terms

beneficially owned, Sole Voting Power, Sole Dispositive Power, Schedule 13G/A

4 terms

beneficially owned financial

"Item 4. | Ownership (a) | Amount beneficially owned: 6,029,281.44"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

Sole Voting Power financial

"5 | Sole Voting Power 6,029,281.44"

Sole voting power is the exclusive right to cast votes attached to a shareholder’s stock without needing approval from anyone else. Like holding the only remote control for a TV, it lets that holder decide corporate matters such as board members, mergers, and policy changes, making it important to investors because it concentrates control and can strongly influence a company’s strategy and the value of its shares.

Sole Dispositive Power financial

"7 | Sole Dispositive Power 6,029,281.44"

Sole dispositive power is the exclusive legal authority to decide what happens to a security — for example, whether to sell, transfer, or retain shares — without needing anyone else’s permission. Investors care because it signals who truly controls the economic outcome of an investment: like holding the only key to a safe, the holder can realize gains or losses and may trigger regulatory reporting, insider rules, or influence over corporate ownership.

Schedule 13G/A regulatory

"form_type: "SCHEDULE 13G/A""

A Schedule 13G/A is an amended public filing with the U.S. securities regulator that updates a previous Schedule 13G, disclosing when an individual or group holds a substantial (typically over 5%) stake in a company and is claiming a passive, non‑controlling intent. Investors monitor these updates because rising or falling holdings can signal changing confidence, potential future moves, or shifts in voting power — like watching a public ledger where large shareholders quietly adjust their positions.

FAQ

How many Sixth Street Specialty Lending (TSLX) shares does STRS Ohio beneficially own?

STRS Ohio beneficially owns 6,029,281.44 shares of Sixth Street Specialty Lending, Inc. common stock. This ownership is reported with sole voting and sole dispositive power over the same number of shares.

What percentage of Sixth Street Specialty Lending (TSLX) is owned by STRS Ohio?

STRS Ohio reports beneficial ownership of 6.3% of Sixth Street Specialty Lending, Inc. common stock. This percentage reflects its holdings as of June 30, 2026, based on the company’s outstanding shares.

Does STRS Ohio have sole or shared voting power over its TSLX shares?

STRS Ohio reports sole voting power over 6,029,281.44 shares of Sixth Street Specialty Lending, Inc. and no shared voting power. It also has sole dispositive power over the same number of shares.

What type of security in Sixth Street Specialty Lending (TSLX) is held by STRS Ohio?

STRS Ohio’s reported holdings are in common stock of Sixth Street Specialty Lending, Inc. The filing identifies the title of the class of securities as common stock, with the position reported on a beneficial ownership basis.

As of what date are STRS Ohio’s TSLX holdings reported in this Schedule 13G/A?

The holdings are reported as of June 30, 2026. At that date, STRS Ohio beneficially owned 6,029,281.44 shares, representing 6.3% of Sixth Street Specialty Lending, Inc.’s outstanding common stock.

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Available on EDGAR 08/14/2026 - 08:46 AM Accepted by SEC EDGAR 08/14/2026 - 08:46 AM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

Sixth Street Specialty Lending, Inc.

(Name of Issuer)

common stock

(Title of Class of Securities)

000000000

(CUSIP Number)

06/30/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 000000000

1

Names of Reporting Persons

STRS OHIO

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

OHIO

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 6,029,281.44
6	Shared Voting Power 0.00
7	Sole Dispositive Power 6,029,281.44
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

0.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

6.3 %

12

Type of Reporting Person (See Instructions)

EP

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Sixth Street Specialty Lending, Inc.
(b)	Address of issuer's principal executive offices: 2100 MCKINNEY AVENUE, SUITE 1500, 2100 MCKINNEY AVENUE, SUITE 1500, DALLAS, TEXAS, 75201.
Item 2.
(a)	Name of person filing: State Teachers Retirement System of Ohio (STRS Ohio)
(b)	Address or principal business office or, if none, residence: 275 East Broad Street Columbus, OH 43215
(c)	Citizenship: USA
(d)	Title of class of securities: common stock
(e)	CUSIP No.: 000000000
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 6,029,281.44
(b)	Percent of class: 6.3 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 6,029,281.44
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 6,029,281.44
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

STRS OHIO

Signature:	Aaron DiCenzo
Name/Title:	Deputy Executive Director, Investments
Date:	08/14/2026