John Dobak is CEO at DermTech, Inc. (DMTK). They have made 18 open-market trades across 1 company since 2020, most recently 2023-03-13.
CIK 0001787176
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 18 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| DMTK | 700,252 | $66K |
Shares reported on the most recent Form 4, priced at the 2023-03-13 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| DMTK | SELL | 2023-03-13 | 2023-03-13 | $3.26 | $5K | -12.9% | +15.5% | -14.2% |
| DMTK | SELL | 2023-03-07 | 2023-03-09 | $4.06 | $192K | -5.6% | -2.4% | -31.8% |
| DMTK | SELL | 2022-03-11 | 2022-03-15 | $14.55 | $19K | +6.4% | -2.7% | -61.5% |
| DMTK | SELL | 2022-03-07 | 2022-03-09 | $12.94 | $43K | -6.5% | -3.6% | -54.8% |
| DMTK | SELL | 2021-12-13 | 2021-12-16 | $16.71 | $33K | -2.4% | -18.4% | -19.7% |
| DMTK | SELL | 2021-12-08 | 2021-12-10 | $18.46 | $21K | +5.7% | -10.8% | -13.8% |
| DMTK | SELL | 2021-09-13 | 2021-09-15 | $36.19 | $137K | +0.4% | -9.3% | -53.8% |
| DMTK | SELL | 2021-09-08 | 2021-09-10 | $36.19 | $42K | -2.0% | -13.6% | -53.1% |
| DMTK | SELL | 2021-07-01 | 2021-07-02 | $41.00 | $890K | -10.8% | -12.3% | -15.5% |
| DMTK | SELL | 2021-06-11 | 2021-06-15 | $41.08 | $629K | +12.6% | -17.0% | -15.0% |
| DMTK | SELL | 2021-06-08 | 2021-06-10 | $43.43 | $49K | +6.5% | -10.9% | -14.6% |
| DMTK | SELL | 2021-06-01 | 2021-06-03 | $40.08 | $620K | +3.0% | -4.7% | -5.3% |
| DMTK | SELL | 2021-05-03 | 2021-05-05 | $40.96 | $2.0M | -1.5% | +10.2% | -8.9% |
| DMTK | SELL | 2021-04-27 | 2021-04-29 | $51.35 | $1.3M | -18.0% | -3.9% | -17.0% |
| DMTK | SELL | 2021-04-12 | 2021-04-14 | $46.31 | $2.3M | -6.7% | -23.8% | -20.0% |
| DMTK | SELL | 2021-03-08 | 2021-03-10 | $50.04 | $39K | +23.3% | -4.1% | -13.5% |
| DMTK | SELL | 2020-12-08 | 2020-12-10 | $11.86 | $9K | +69.3% | +175.2% | +308.0% |
| DMTK | SELL | 2020-09-10 | 2020-09-14 | $10.82 | $27K | -1.6% | +8.8% | +31.6% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.