Sixth Street Specialty Lending (TSLX) stock: insider trades, news & valuation
Strong buyingShare price and insider trades
Sixth Street Specialty Lending insider trading at a glance (Oct 9, 2026): in the past 12 months, 8 insiders bought $11.2M and 0 sold $0 of TSLX stock on the open market, including a cluster buy that began Feb 26, 2026.
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TSLX insider buying and selling by quarter
Open-market purchases (green, above the line) and sales (red, below), by trade date.
| Quarter | Bought | Purchases | Sold | Sales |
|---|---|---|---|---|
| Q4 2026 | — | 0 | — | 0 |
| Q3 2026 | — | 0 | — | 0 |
| Q2 2026 | $142K | 1 | — | 0 |
| Q1 2026 | $10.8M | 9 | — | 0 |
| Q4 2025 | $208K | 1 | — | 0 |
Valuation, profit and volume
Summary
Over the past 12 months, 8 Sixth Street Specialty Lending, Inc. insiders reported open-market purchases totaling $11.2M, while 0 insiders reported sales totaling $0. The most recent cluster buy began on Feb 26, 2026, when 6 insiders bought a combined $10.8M. Among insiders with enough purchase history to measure, Alan Waxman (President) has the highest Insider Score at 29.
Insider transactions
Open-market purchases and sales.
| Filed | Insider | Type | Shares | Price | Value | Since | Score |
|---|---|---|---|---|---|---|---|
| May 13SEC | Ross Anthony BruckPresident | Buy | 8,00018,250 held (+78%) | $17.76 | $142K | -2.3% | — |
| Mar 11SEC | Alan WaxmanPresident | Buy | 200,000500,000 held (+67%) | $18.18 | $3.6M | -4.6% | 29 |
| Mar 11SEC | Alan WaxmanPresident | Buy | 45,000545,000 held (+9%) | $18.47 | $831K | -6.1% | 29 |
| Mar 10SEC | P Emery CovingtonDirector | Buy | 7,50015,000 held (+100%) | $18.35 | $138K | -5.4% | — |
| Mar 9SEC | Alan WaxmanPresident | Buy | 200,000300,000 held (+200%) | $18.42 | $3.7M | -5.8% | 29 |
| Mar 9SEC | Alan WaxmanPresident | Buy | 100,000new position | $18.46 | $1.8M | -6.0% | 29 |
| Mar 4SEC | David StieplemanPresident | Buy | 20,20025,735 held (+365%) | $17.65 | $357K | -1.7% | — |
| Mar 3SEC | Steven PlussPresident | Buy | 15,00051,500 held (+41%) | $17.72 | $266K | -2.1% | — |
| Mar 3SEC | Joshua PeckPresident | Buy | 2,8403,140 held (+947%) | $17.59 | $50K | -1.4% | — |
| Mar 2SEC | Michael GrafSee Remarks | Buy | 1,0007,205 held (+16%) | $18.26 | $18K | -5.0% | — |
| Nov 20SEC | Robert J. StanleyCEO | Buy | 10,00024,907 held (+67%) | $20.85 | $208K | -16.8% | — |
Insiders at Sixth Street Specialty Lending, Inc.
| Insider | Bought | Sold | Last filing | Score |
|---|---|---|---|---|
| Alan WaxmanPresident | $10.0M | — | Mar 11, 2026 | 29 |
| David StieplemanPresident | $357K | — | Mar 4, 2026 | — |
| Steven PlussPresident | $266K | — | Mar 3, 2026 | — |
| Robert J. StanleyCEO | $208K | — | Nov 20, 2025 | — |
| Ross Anthony BruckPresident | $142K | — | May 13, 2026 | — |
| P Emery CovingtonDirector | $138K | — | Mar 10, 2026 | — |
| Joshua PeckPresident | $50K | — | Mar 3, 2026 | — |
| Michael GrafSee Remarks | $18K | — | Mar 2, 2026 | — |
TSLX stock: common questions
Are Sixth Street Specialty Lending, Inc. insiders buying TSLX stock?
In the past 12 months, 8 insiders reported open-market purchases of TSLX worth $11.2M. The latest was President Ross Anthony Bruck bought $142K of TSLX at $17.76 — first open-market purchase in our records; raises the stake by 78%.
Are Sixth Street Specialty Lending, Inc. insiders selling TSLX stock?
0 insiders reported sales worth $0 over the same period.
Where does this data come from?
Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.
What is TSLX's 52-week range?
Over the past year TSLX has traded between $15.83 and $20.92. It last closed at $17.35 on Oct 9, 2026.