Verastem, Inc. (VSTM) is a publicly traded company in the Unknown sector. Across all available filings, 38 corporate insiders have executed 387 transactions totaling $26.9M, demonstrating a bullish sentiment with $13.7M in net insider flow. The most recent transaction on Feb 4, 2026 involved a sale of 970 shares valued at $6.5K.
No significant insider buying has been recorded for VSTM in the recent period.
No significant insider selling has been recorded for VSTM in the recent period.
Based on recent SEC filings, insider sentiment for VSTM is bullish with an Insider Alignment Score of 76/100 and a net flow of $13.7M. Insiders are accumulating shares, which historically signals confidence in the company's future performance.
Insider trading at Verastem, Inc. (VSTM) refers to stock transactions made by corporate insiders—executives, directors, and beneficial owners holding more than 10% of the company's shares. These individuals have access to material non-public information and are required by law to report their trades to the SEC within two business days. Currently, 38 insiders are actively trading VSTM stock, having executed 387 transactions in the past 90 days. The most active insider is Christoph H. Westphal (Executive), who has made 77 transactions totaling $15.2M.
Get notified when executives and directors at VSTM file new Form 4 transactions
Date | Insider | Title | Type | Shares | Price | Value | Flags |
|---|---|---|---|---|---|---|---|
| Feb 4, 2026 | Paterson Dan | Executive | Sale | 970 | $6.69 | $6.5K | |
| Jan 21, 2026 | Paterson Dan | Executive | Award | 213,785 | $N/A | $0 | |
| Jan 21, 2026 | Calkins Daniel | Chief Financial Officer | Award | 16,665 | $N/A | $0 | C-Suite |
| Jan 12, 2026 | Calkins Daniel | Chief Financial Officer | Sale | 5,039 | $7.16 | $36.1K | C-Suite |
| Jan 12, 2026 | Paterson Dan | Executive | Sale | 10,321 | $7.16 | $73.9K | |
| Dec 24, 2025 | Calkins Daniel | Executive | Sale | 80 | $7.86 | $629 | |
| Dec 16, 2025 | E. Gagnon Robert | Executive | Sale | 283 | $9.14 | $2.6K | |
| Dec 16, 2025 | Paterson Dan | Executive | Sale | 393 | $9.14 | $3.6K | |
| Dec 16, 2025 | M. Stuglik Brian | Executive | Sale | 592 | $9.14 | $5.4K | |
| Dec 11, 2025 | Paterson Dan | Executive | Sale | 2,000 | $10.00 | $20.0K | |
| Dec 10, 2025 | Paterson Dan | Executive | Sale | 2,000 | $10.07 | $20.1K | |
| Dec 9, 2025 | Paterson Dan | Executive | Sale | 2,000 | $10.25 | $20.5K | |
| Dec 8, 2025 | Paterson Dan | Executive | Sale | 2,000 | $10.50 | $21.0K | |
| Dec 5, 2025 | Paterson Dan | Executive | Sale | 2,000 | $10.61 | $21.2K | |
| Dec 4, 2025 | Paterson Dan | Executive | Sale | 2,000 | $10.00 | $20.0K |
| TYPE | COUNT | VALUE | % |
|---|---|---|---|
Purchase(P) | 104 | $20.3M | 42.6% |
Award(A) | 44 | $18.0M | 37.8% |
Sale(S) | 128 | $6.6M | 13.8% |
Payment(F) | 32 | $2.6M | 5.5% |
Small Acquisition(L) | 44 | $88.2K | 0.2% |
Exercise(M) | 1 | $20.4K | 0.0% |
Conversion(C) | 24 | $0 | 0.0% |
Gift(G) | 8 | $0 | 0.0% |
Other(J) | 2 | $0 | 0.0% |
Insiders at Verastem, Inc. are accumulating shares at an accelerated pace. With 38 insiders making 387 transactions totaling $20.3M in purchases versus $6.6M in sales, the net buying activity of $13.7M signals strong executive confidence. Christoph H. Westphal (Executive) leads the buying activity with $15.2M in transactions across all time.