VSTM
insider transactionsVerastem, Inc. — buys & sells by directors, officers and 10% owners A shareholder owning more than 10% of the company. Must report trades, but usually a weaker signal than an officer or director. (SEC Form 4).
Net shares · 90d
-806
0 buy · 806 sell
Net value · 90d
-$4.7K
$0 in · $4.7K out
Sentiment · 90d
Net selling
0% buying · 100% selling
Open-market trades · 90d
1
0 buy · 806 sell
Net buy / sell volume
Not enough data to chart yet.
Tap or hover the chart for daily net volume. Green = net buying, red = net selling.
All transactions
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Grant·A
Director
$0
36.0K sh
Own +216%
-
Grant·A
Director
$0
36.0K sh
Own +36%
-
Grant·A
Director
$0
36.0K sh
Own +216%
-
Grant·A
Director
$0
36.0K sh
Own +216%
-
Grant·A
Director
$0
36.0K sh
Own +432%
-
Grant·A
Director
$0
108.0K sh
Own New
-
Sell·S
Dan Paterson KEY
President and CEO · 10b5-1
$4.7K
806 sh · $5.82
Own -0%
| Date▾ | Insider | Type | Shares | Value |
|---|---|---|---|---|
| May 21, 2026 | Karin Anna Tollefson | Grant A | 36.0K | $0 |
| May 21, 2026 | Brian M Stuglik | Grant A | 36.0K | $0 |
| May 21, 2026 | Eric K Rowinsky | Grant A | 36.0K | $0 |
| May 21, 2026 | Michelle Robertson | Grant A | 36.0K | $0 |
| May 21, 2026 | Paul A. Bunn | Grant A | 36.0K | $0 |
| May 21, 2026 | BAILEY MICHAEL P | Grant A | 108.0K | $0 |
| May 4, 2026 | Dan Paterson KEY 10b5-1 | Sell S | 806 | $4.7K |
About VSTM insider trading
This page tracks insider transactions for Verastem, Inc. (VSTM) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.