Sarah Hollis Winkler is VP at GenMark Diagnostics, Inc. (GNMK). They have made 15 open-market trades across 1 company since 2019, most recently 2021-04-22.
CIK 0001776182
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 15 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| GNMK | 147,502 | $3.5M |
Shares reported on the most recent Form 4, priced at the 2021-03-01 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| GNMK | SELL | 2021-02-26 | 2021-03-01 | $17.01 | $380K | -3.3% | +25.2% | N/A |
| GNMK | SELL | 2021-02-19 | 2021-02-22 | $21.80 | $14K | -4.0% | +23.7% | N/A |
| GNMK | SELL | 2021-01-27 | 2021-01-29 | $14.06 | $11K | +22.1% | +37.9% | N/A |
| GNMK | SELL | 2021-01-25 | 2021-01-25 | $14.22 | $293K | -6.4% | +24.0% | N/A |
| GNMK | SELL | 2020-11-19 | 2020-11-20 | $13.85 | $9K | +2.6% | +10.5% | +61.2% |
| GNMK | SELL | 2020-10-27 | 2020-10-29 | $11.34 | $9K | -0.4% | +7.9% | +8.3% |
| GNMK | SELL | 2020-08-20 | 2020-08-24 | $15.41 | $10K | -17.1% | -4.2% | -6.2% |
| GNMK | SELL | 2020-07-28 | 2020-07-29 | $17.30 | $13K | -8.1% | -22.3% | -30.3% |
| GNMK | SELL | 2020-05-19 | 2020-05-20 | $10.46 | $7K | -4.7% | +30.2% | +58.9% |
| GNMK | SELL | 2020-04-29 | 2020-05-01 | $11.64 | $8K | -0.3% | -15.7% | +51.9% |
| GNMK | SELL | 2020-02-20 | 2020-02-21 | $3.80 | $13K | +14.2% | +6.0% | +144.8% |
| GNMK | SELL | 2020-01-28 | 2020-01-30 | $5.44 | $5K | -19.2% | -35.9% | +128.6% |
| GNMK | SELL | 2020-01-21 | 2020-01-23 | $4.80 | $5K | +3.9% | -25.6% | +73.1% |
| GNMK | SELL | 2019-11-12 | 2019-11-12 | $5.62 | $31K | -1.8% | -4.3% | -9.8% |
| GNMK | SELL | 2019-10-30 | 2019-11-01 | $5.88 | $19K | -5.4% | -3.7% | -3.8% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.