Verastem Inc
Ownership
Ownership Structure
Who owns Verastem Inc (VSTM)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 77.9% of the shares are freely tradable; institutional investors hold 93.6%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| RTW INVESTMENTS, LLC | 7.27 | 6,576,306 | +0.0 | 03/31/2026 |
| BlackRock Inc | 6.85 | 6,194,925 | +30.3 | 03/31/2026 |
| Deep Track Capital, LP | 6.34 | 5,740,850 | +0.0 | 06/30/2026 |
| Armistice Capital, LLC | 5.08 | 4,592,000 | +29.9 | 03/31/2026 |
| Nantahala Capital Management, LLC | 3.96 | 3,584,820 | +675.7 | 03/31/2026 |
| State Street Corp | 3.89 | 3,516,651 | +9.2 | 03/31/2026 |
| Vanguard Capital Management, LLC | 3.67 | 3,322,770 | +0.0 | 03/31/2026 |
| Stonepine Capital Management Llc | 3.65 | 3,302,300 | +20.9 | 03/31/2026 |
| Foresite Capital Management VI LLC | 3.48 | 3,146,631 | +0.0 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| State Street® SPDR® S&P® Biotech ETF | 3.95 | 3,576,513 | -1.1 | 08/31/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Paterson Dan | President and CEO | 589,940 | 4,483,544 $ | Aug 3, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Aug 3, 2026 | Paterson Dan | President and CEO | Sell | 1,302 | 5.81 | 7,565 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: September 17, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.