Ralph Snyderman is Director at CareDx, Inc. (CDNA). They have made 6 open-market trades across 3 companies since 2006, most recently 2025-05-28.
CIK 0001178031
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.
0 open-market purchases, against 6 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| CDNA | SELL | 2021-05-27 | 2021-06-10 | $80.20 | $1.5M | -2.2% | -8.5% | -22.9% |
| CDNA | SELL | 2021-01-15 | 2021-01-19 | $88.88 | $1.1M | -18.1% | -11.5% | -21.9% |
| IRTC | SELL | 2020-05-12 | 2020-05-13 | $134.55 | $34K | -1.5% | -12.3% | +43.4% |
| IRTC | SELL | 2020-03-04 | 2020-03-05 | $98.85 | $129K | -32.0% | -21.1% | +31.0% |
| TRGT | SELL · 10b5-1 | 2010-02-16 | 2010-02-18 | $19.92 | $299K | N/A | N/A | N/A |
| PG | SELL | 2007-02-07 | 2007-02-08 | $64.43 | $260K | -3.2% | +0.0% | +0.0% |
| PG | SELL | 2006-02-13 | 2006-02-15 | $59.59 | $240K | -3.2% | +0.0% | +0.0% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.