Verastem
VSTM · NASDAQ
$9.34+$0.72 (+8.35%)TodayMarket closed ·
Prev close $8.62
Who owns VSTM
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 56.2% of VSTM’s shares.
- Armistice Capital LLC8.0%
- BlackRock Institutional Trust Company, N.A.7.7%
- RTW Investments L.P.7.6%
- Deep Track Capital LP6.5%
- Next 6 largest institutions26.4%
- All other shareholders43.8%
| Holder | Shares | % of shares |
|---|---|---|
| Armistice Capital LLC | 7.02M | 7.99% |
| BlackRock Institutional Trust Company, N.A. | 6.79M | 7.73% |
| RTW Investments L.P. | 6.64M | 7.55% |
| Deep Track Capital LP | 5.74M | 6.53% |
| State Street Investment Management (US) | 5.13M | 5.84% |
| Rosalind Advisors, Inc. | 3.99M | 4.54% |
| Vanguard Capital Management, LLC | 3.85M | 4.38% |
| Nantahala Capital Management, LLC | 3.58M | 4.08% |
| Stonepine Capital Management, LLC | 3.35M | 3.81% |
| Vanguard Portfolio Management, LLC | 3.27M | 3.72% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| State Street SPDR S&P Biotech ETF | 3.58M | 4.07% |
| Vanguard Total Stock Market Index Fund | 2.81M | 3.20% |
| iShares Russell 2000 ETF | 2.06M | 2.34% |
| Vanguard Explorer Fund | 1.40M | 1.59% |
| Vanguard Extended Market Index Fund | 962.56K | 1.10% |
Insider trades
Form 4 filings by officers, directors and large holders
Over the last 6 months, insiders sold $490.50K (8 trades) of VSTM on the open market, with no buys.
| Insider | Type | Shares | Value |
|---|---|---|---|
| Paterson Dan | Sale | 44.12K | $352.97K |
| Calkins Daniel | Sale | 2.57K | $20.53K |
| Paterson Dan | Award | 106.89K | — |
| Calkins Daniel | Award | 8.33K | — |
| Calkins Daniel | Sale | 55 | $423 |
| Paterson Dan | Sale | 1.30K | $7.56K |
| Paterson Dan | Sale | 20.87K | $87.24K |
| Calkins Daniel | Sale | 57 | $235 |
| Calkins Daniel | Sale | 4.03K | $16.85K |
| BAILEY MICHAEL P | Award | 108.00K | — |
Short interest
Settled Sep 30, 2026
- Shares short
- 14.96M
- Days to cover
- 6.97
- % of shares outstanding
- 17.03%
- Average daily volume
- 2.15M
- Change since last report
- −17.0%
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