George Bickerstaff insider trades: CareDx (CDNA) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where George reports to the SEC
and 2 more companies
Open-market buys and sales
12 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Mar 10, 2025 | CDNA | ↓ Sell | 20,000 | $18.36 | $367K | Direct | Mar 12, 2025 (2d) |
| Feb 28, 2022 | CDNA | ↓ Sell | 25,000 | $39.11 | $978K | Direct | Mar 1, 2022 (1d) |
| May 24, 2021 | INVA | ↑ Buy | 20,000 | $13.21 | $264K | Direct | May 25, 2021 (1d) |
| May 21, 2021 | CDNA | ↓ Sell | 10,000 | $75.34 | $753K | Direct | May 21, 2021 (0d) |
| May 12, 2021 | CDNA | ↓ Sell | 10,000 | $63.07 | $631K | Direct | May 13, 2021 (1d) |
| Dec 14, 2020 | CDNA | ↓ Sell | 10,000 | $71.76 | $718K | Direct | Dec 14, 2020 (0d) |
| May 13, 2020 | CDNA | ↓ Sell | 10,000 | $27.65 | $276K | Direct | May 13, 2020 (0d) |
| Feb 27, 2019 | INVA | ↑ Buy | 15,000 | $15.90 | $239K | Direct | Feb 28, 2019 (1d) |
| Feb 21, 2019 | INVA | ↑ Buy | 10,000 | $14.90 | $149K | Direct | Feb 22, 2019 (1d) |
| Aug 9, 2018 | AXON | ↑ Buy | 25,000 | $2.07 | $52K | Direct | Aug 13, 2018 (4d) |
| Feb 27, 2018 | AXON | ↑ Buy | 25,000 | $1.50 | $37K | Direct | Mar 1, 2018 (2d) |
| Mar 12, 2007 | VION | ↑ Buy | 50,000 | $1.76 | $88K | Direct | Mar 14, 2007 (2d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other CDNA insiders
Open-market trades in the last 12 months
About George Bickerstaff's insider trades
George Bickerstaff is an insider at CareDx (CDNA). Since Mar 12, 2007, George has reported 6 open-market purchases worth $829K and 6 sales worth $3.7M on SEC Form 4. There have been no open-market trades in the last 12 months.
Their filings also include grants and awards (68 filings), option exercises (8 filings), other transactions (2 filings), shares returned to the company (2 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 CDNA insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.