Sixth Street Specialty Lending, Inc. (TSLX) Insider Trading
Over the last 3 months, TSLX insiders made 4 open-market buys and 0 sales, a net purchase of $5.8M (SEC Form 4). Multiple insiders bought within days of each other (cluster buying). Over the last 6 months, 211 institutions increased and 148 reduced their position (13F).
Insider Activity
Sentiment
100/100
Buys (3m)
4
Sells (3m)
0
Net (3m)
$5.8M
Insiders buyingCluster buying
Insider trades by month Buys Sells
May
Aug
Nov
Nov
Mar
May
Context3-month price -6.5%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| May 13, 2026 | Bruck Ross Anthonyofficer: Vice President | Buy | 8,000 | $17.76 |
| Mar 10, 2026 | Covington P Emerydirector | Buy | 7,500 | $18.35 |
| Mar 9, 2026 | Waxman Alanofficer: Vice President | Buy | 200,000 | $18.42 |
| Mar 9, 2026 | Waxman Alanofficer: Vice President | Buy | 100,000 | $18.46 |
| Mar 4, 2026 | Stiepleman Daviddirector, officer: Vice President | Buy | 20,200 | $17.65 |
| Mar 3, 2026 | Peck Joshuaofficer: Vice President | Buy | 2,840 | $17.59 |
| Mar 2, 2026 | Graf Michaelofficer: See Remarks | Buy | 1,000 | $18.26 |
| Nov 20, 2025 | Stanley Robert J.director, officer: Co-CEO | Buy | 10,000 | $20.85 |
| Nov 22, 2024 | Graf Michaelofficer: See Remarks | Buy | 1,000 | $20.53 |
| Aug 9, 2024 | Graf Michaelofficer: See Remarks | Buy | 500 | $20.45 |
| Aug 7, 2024 | Slotkin Judy Sdirector | Buy | 7,015 | $19.90 |
| May 22, 2024 | Covington P Emerydirector | Buy | 7,500 | $21.50 |
| Mar 15, 2023 | Doddy Hurleydirector | Buy | 2,900 | $17.51 |
| Mar 13, 2023 | Graf Michaelofficer: See Remarks (1) | Buy | 2,000 | $18.55 |
| Mar 13, 2023 | Graf Michaelofficer: See Remarks (1) | Buy | 1,500 | $17.55 |
| Aug 22, 2022 | Brett Antonofficer: Chief Compliance Officer | Buy | 500 | $19.25 |
| Aug 10, 2022 | Pluss Stevenofficer: Vice President | Buy | 10,000 | $19.04 |
| Aug 9, 2022 | Simmonds Ianofficer: Chief Financial Officer | Buy | 500 | $18.89 |
| May 26, 2022 | Gordon Jenniferofficer: Vice President | Buy | 2,500 | $19.91 |
| May 11, 2022 | Simmonds Ianofficer: Chief Financial Officer | Buy | 500 | $20.99 |
| Mar 10, 2022 | Slotkin Judy Sdirector: | Buy | 850 | $23.13 |
| Mar 9, 2022 | HIGGINBOTHAM RICHARD Adirector: | Buy | 2,000 | $22.82 |
| May 13, 2021 | HIGGINBOTHAM RICHARD Adirector | Buy | 5,000 | $21.88 |
| Mar 11, 2021 | Easterly Joshuadirector, officer: Chief Executive Officer | Buy | 8,361 | $21.55 |
| Mar 2, 2021 | Easterly Joshuadirector, officer: Chief Executive Officer | Buy | 686 | $21.34 |
| Mar 1, 2021 | Ross Johndirector | Buy | 4,000 | $21.72 |
| Feb 25, 2021 | Ross Johndirector | Buy | 1,000 | $21.38 |
| Aug 27, 2020 | Doddy Hurleydirector | Buy | 1,500 | $17.81 |
| Aug 13, 2020 | Slotkin Judy Sdirector | Buy | 7,500 | $18.46 |
| Aug 11, 2020 | Ross Johndirector | Buy | 3,299 | $18.60 |
Source: TSLX SEC Form 4 filings, latest May 13, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their TSLX positions over the last 6 months (SEC Form 13F).
Increased
211
New positions
70
Reduced
148
Sold out
59
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| CUSTOM INDEX SYSTEMS, LLC | New Position | 14.9M | Apr 29, 2026 |
| STRS OHIO | Increased | 4.3M | Apr 24, 2026 |
| SIXTH STREET PARTNERS MANAGEMENT COMPANY, L.P. | Unchanged | 2.7M | May 15, 2026 |
| SIXTH STREET PARTNERS MANAGEMENT COMPANY, L.P. | Unchanged | 2.7M | Feb 17, 2026 |
| SOUND INCOME STRATEGIES, LLC | Increased | 2.6M | Apr 27, 2026 |
| SOUND INCOME STRATEGIES, LLC | Increased | 2.5M | Jan 21, 2026 |
| PROGENY 3, INC. | Unchanged | 2.5M | Feb 17, 2026 |
| PROGENY 3, INC. | Unchanged | 2.5M | May 15, 2026 |
| MORGAN STANLEY | Increased | 2.4M | Feb 13, 2026 |
| VAN ECK ASSOCIATES CORP | Reduced | 2.3M | Feb 13, 2026 |
| BANK OF MONTREAL /CAN/ | Increased | 2.3M | Feb 12, 2026 |
| STRS OHIO | Increased | 2.2M | Feb 2, 2026 |
| OMERS ADMINISTRATION CORP | Increased | 2.0M | May 15, 2026 |
| UBS GROUP AG | Increased | 1.9M | May 5, 2026 |
| VAN ECK ASSOCIATES CORP | Reduced | 1.8M | May 15, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.