About this page
Insider trades reported on SEC Form 4: when the people who run a company buy or sell its shares with their own money.
How to read it
- Form 4
- The form a company insider (officer, director or owner of more than 10%) must file with the SEC within two business days of buying or selling the company's shares.
- Buy (P) and Sell (S)
- Open-market purchases and sales. Gifts, option exercises and automatic tax withholding are left out because they say little about what the insider thinks.
- Value
- Shares times price, as reported on the filing.
- 10b5-1
- A trade made under a plan set up in advance. Planned sales are common and usually say less than an unplanned purchase.
- Late filing
- A Form 4 filed more than two business days after the trade.
- Vs. S&P 500
- How the stock did after the trade minus how the overall market did in the same weeks.
A real example
In January 2016, when bank stocks were falling, JPMorgan Chase CEO Jamie Dimon bought 500,000 JPMorgan shares with his own money, worth about $26 million. His Form 4 made the purchase public within days, and investors read it as a strong sign of confidence.
Explain it like I'm 13
If the coach of a team bets his own allowance that his team will win, that tells you something. A Form 4 is the note a company boss must hand in whenever he buys or sells his own company's shares, so everyone can see it.
Data from public SEC filings and congressional reports. Information, not investment advice. Check every number against the filing linked on the page.
Verastem, Inc. (VSTM): Insider Trades and Fund Holdings
In the past 12 months, Verastem, Inc. insiders reported no open-market purchases and 6 sales worth $486K; 6 of the sales were reported as made under a 10b5-1 trading plan.
Timeline: news and trades
Company filings (8-K), insider trades, notices of planned sales (Form 144), Congress trades and fund moves in the past year, newest first.
- Oct 14, 2026NewsCompany reported: Quarterly or annual results; Executive or director change
- Oct 1, 2026Insider saleCEO Dan Paterson sold $352,968 under a 10b5-1 plan
- Oct 1, 2026Insider saleCFO Daniel Calkins sold $20,528 under a 10b5-1 plan
- Oct 1, 2026Planned saleDan Paterson (officer, director) filed notice to sell about $353,047 around Oct 1, 2026
- Sep 21, 2026Insider saleCFO Daniel Calkins sold $424 under a 10b5-1 plan
- Aug 3, 2026Insider saleCEO Dan Paterson sold $7,565 under a 10b5-1 plan
- Jun 22, 2026Insider saleCEO Dan Paterson sold $87,241 under a 10b5-1 plan
- Jun 22, 2026Insider saleCFO Daniel Calkins sold $17,089 under a 10b5-1 plan
Recent insider trades
Open-market purchases (code P) and sales (code S) from Form 4. Grants, option exercises and gifts are not shown. Latest filing: Oct 2, 2026.
| Filed | Insider | Type | Value |
|---|---|---|---|
| Oct 2 | Dan PatersonCEO | ▼ SELL10b5-1 | $353K |
| Oct 2 | Daniel CalkinsCFO | ▼ SELL10b5-1 | $21K |
| Sep 23 | Daniel CalkinsCFO | ▼ SELL10b5-1 | $424 |
| Aug 5 | Dan PatersonCEO | ▼ SELL10b5-1 | $8K |
| Jun 24 | Dan PatersonCEO | ▼ SELL10b5-1 | $87K |
| Jun 24 | Daniel CalkinsCFO | ▼ SELL10b5-1 | $17K |
Insiders who traded in the past year
| Insider | Role | Buys | Bought | Sells | Sold |
|---|---|---|---|---|---|
| Dan Paterson | CEO | 0 | $0 | 3 | $448K |
| Daniel Calkins | CFO | 0 | $0 | 3 | $38K |
A All 6 insider trades reported on time. How it is graded
Reading these numbers
Insiders sell for many reasons: taxes, diversification, a house. Purchases with their own money are rarer and are usually read as more informative. A Form 4 is due within two business days of the trade. How to read a Form 4 →