David Thompson is Director at EXACT SCIENCES CORP (EXAS). They have made 5 open-market trades across 3 companies since 2006, most recently 2018-07-26.
CIK 0001163761
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
4 open-market purchases totalling $1.0M since 2006, against 1 sale. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| EXAS | BUY | 2016-12-14 | 2016-12-14 | $13.84 | $138K | +0.7% | +37.1% | +51.5% |
| EXAS | BUY | 2016-01-11 | 2016-01-13 | $6.99 | $105K | -4.2% | -15.7% | +2.3% |
| EXAS | BUY | 2011-12-13 | 2012-04-24 | $8.16 | $163K | -25.4% | +0.2% | +0.2% |
| TWTI | SELL | 2008-07-14 | 2008-07-17 | $11.23 | $1.0M | N/A | N/A | N/A |
| STJ | BUY | 2006-04-21 | 2006-04-25 | $38.53 | $597K | -9.2% | -0.4% | -0.4% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.