Andrew R Allen insider trades: Gritstone bio (GRTS) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Andrew reports to the SEC






and 2 more companies
Open-market buys and sales
5 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| May 16, 2024 | GRTS | ↓ Sell | 24,263 | $0.75 | $18K | Direct | May 17, 2024 (1d) |
| Dec 10, 2018 | SRRA | ↑ Buy | 66,000 | $1.64 | $108K | Direct | Dec 11, 2018 (1d) |
| Jan 16, 2015 | CLVS | ↓ Sell10b5-1 | 80,000 | $65.64 | $5.3M | Direct | Jan 20, 2015 (4d) |
| Jun 5, 2013 | CLVS | ↓ Sell | 22,594 | $68.54 | $1.5M | By wife | Jun 7, 2013 (2d) |
| Nov 21, 2011 | CLVS | ↑ Buy | 3,846 | $13.00 | $50K | Direct | Nov 21, 2011 (0d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
About Andrew R Allen's insider trades
Andrew R Allen is President and CEO at Gritstone bio (GRTS). Since Nov 21, 2011, Andrew has reported 2 open-market purchases worth $158K and 3 sales worth $6.8M on SEC Form 4. There have been no open-market trades in the last 12 months.
1 sale (77% of the value sold) was made under a Rule 10b5-1 trading plan, which is set up months in advance and runs on a schedule, so it says little about how the insider sees the stock today.
Their filings also include grants and awards (37 filings), option exercises (5 filings), shares withheld for taxes (4 filings), shares returned to the company (3 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every GRTS insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.