Sixth Street Specialty Lending, Inc. (TSLX) Insider Trading & SEC Filings
Last SEC filing
Sixth Street Specialty Lending, Inc. (TSLX) has filed 2 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-05-29. Insiders disclosed 1 open-market purchases totaling $142K. 3 Form 8-K material event filings were reported by TSLX in the last 90 days. InsiderAlpha tracks every TSLX SEC filing - Form 4, Form 144, and 8-K - in real time, including Rule 10b5-1 plan detection.
About Sixth Street Specialty Lending, Inc. (TSLX)
Sixth Street Specialty Lending, Inc. trades under the ticker TSLX. InsiderAlpha tracks 11 primary SEC Form 4 filings from 8 reporting insiders for TSLX since 2024, sourced directly from SEC EDGAR.
| SEC CIK | 0001508655 |
|---|
90-Day SEC Filing Activity
| Insider purchases (90d) | 1 ($142K) |
|---|---|
| Form 4 filings (90d) | 2 |
| Form 8-K filings (90d) | 3 |
| Latest Form 4 filing | 2026-05-29 |
Recent TSLX Insider Transactions (Form 4)
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Robert J. Stanley | CEO | J - Other acquisition / disposition | 20.0K | - | - | SEC | |
| Ross Anthony Bruck | Vice President | P - Open-market purchase | 8.0K | $17.76 | $142K | SEC | |
| Alan Waxman | Vice President | P - Open-market purchase | 45.0K | $18.47 | $831K | SEC | |
| Alan Waxman | Vice President | P - Open-market purchase | 200.0K | $18.18 | $3.64M | SEC | |
| P. Emery Covington | Insider | P - Open-market purchase | 7.5K | $18.35 | $138K | SEC | |
| Alan Waxman | Vice President | P - Open-market purchase | 200.0K | $18.42 | $3.68M | SEC | |
| Alan Waxman | Vice President | P - Open-market purchase | 100.0K | $18.46 | $1.85M | SEC | |
| David Stiepleman | Vice President | P - Open-market purchase | 20.2K | $17.65 | $357K | SEC | |
| Joshua Peck | Vice President | P - Open-market purchase | 2.8K | $17.59 | $50K | SEC | |
| Steven Pluss | Vice President | P - Open-market purchase | 15.0K | $17.72 | $266K | SEC | |
| Michael Graf | Insider | P - Open-market purchase | 1.0K | $18.26 | $18K | SEC | |
| Robert J. Stanley | Co-CEO | P - Open-market purchase | 10.0K | $20.85 | $208K | SEC | |
| Michael Graf | Insider | P - Open-market purchase | 1.0K | $20.53 | $21K | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for Sixth Street Specialty Lending, Inc. (TSLX). Updated in real time as new filings are submitted to the SEC.
Most-Active TSLX Insiders - Last 90 Days
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| Robert J. Stanley | 1 | - |
| Ross Anthony Bruck | 1 | $142K |
Recent TSLX Form 8-K Material Events
- - Item 5.07 [SEC]
- - Item 5.07 [SEC]
- - Item 1.01, 2.03, 8.01, 9.01 [SEC]
- - Item 2.02, 7.01, 9.01 [SEC]
- - Item 5.02, 7.01, 8.01, 9.01 · Leadership · neutral [SEC]
Joshua Easterly, Chairman of the Board of Sixth Street Specialty Lending, Inc., announced he will not seek re-election at the May 2026 Annual Meeting and will retire from Sixth Street Partners as of June 30, 2026. Easterly will also step down as Co-Chief Investment Officer, with
Recent Insider Filings
- - Robert J. Stanley (CEO)
- - Ross Anthony Bruck (Vice President)
- - Alan Waxman (Vice President)
- - P. Emery Covington (Insider)
- - Alan Waxman (Vice President)
Form 4 Transaction Code Reference
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in TSLX insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
TSLX Insider Trading - FAQ
- What is the latest insider trade for TSLX?
- Sixth Street Specialty Lending, Inc. (TSLX) had 2 insider filings in the last 90 days, with the most recent on 2026-05-29. InsiderAlpha tracks every Form 4, Form 144, and 8-K filing in real time.
- How many insiders are buying TSLX stock?
- 1 insider purchase of TSLX was filed in the last 90 days, totaling $142K.
- How many insiders are selling TSLX stock?
- 0 insider sales of TSLX were filed in the last 90 days.
- Where can I see TSLX SEC filings (Form 4, 10-K, 10-Q, 8-K)?
- This page tracks TSLX Form 4 insider transactions, Form 144 sale notices, and 8-K material event disclosures in one timeline. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
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Learn More
- What is SEC Form 4?
- How to read insider buying signals
- Rule 10b5-1 trading plans explained
- The cluster buying signal
Open the live TSLX dashboard on InsiderAlpha for real-time alerts, charting, and full historical filing search.