Zachariah Serber is CSO at Zymergen Inc. (ZY). They have made 6 open-market trades across 1 company since 2022, most recently 2022-10-19.
CIK 0001845655
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 | Shares | Value |
|---|---|---|
| ZY | 2,551,685 | $6.2M |
Shares reported on the most recent Form 4, priced at the 2022-09-07 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| ZY | SELL | 2022-09-02 | 2022-09-07 | $2.21 | $7K | +18.8% | +21.4% | N/A |
| ZY | SELL · 10b5-1 | 2022-08-11 | 2022-08-15 | $3.91 | $21K | -29.5% | -24.9% | N/A |
| ZY | SELL | 2022-08-02 | 2022-08-04 | $2.61 | $8K | +32.2% | -14.1% | N/A |
| ZY | SELL | 2022-07-05 | 2022-07-07 | $1.32 | $4K | +28.6% | +77.0% | +85.1% |
| ZY | SELL | 2022-06-02 | 2022-06-06 | $1.68 | $5K | -12.0% | -12.0% | +31.1% |
| ZY | SELL | 2022-05-02 | 2022-05-04 | $1.79 | $6K | -13.3% | -10.4% | +49.1% |
| ZY | SELL · 10b5-1 | 2022-02-25 | 2022-03-01 | $3.92 | $37K | -18.9% | -25.1% | -63.2% |
| ZY | SELL · 10b5-1 | 2022-02-22 | 2022-02-24 | $3.91 | $6K | -11.1% | -24.0% | -69.9% |
| ZY | SELL · 10b5-1 | 2022-02-14 | 2022-02-16 | $4.00 | $22K | -4.3% | -13.6% | -64.2% |
| ZY | SELL · 10b5-1 | 2022-02-07 | 2022-02-09 | $4.33 | $24K | -13.2% | -27.4% | -65.4% |
| ZY | SELL · 10b5-1 | 2022-01-31 | 2022-02-02 | $5.03 | $27K | -18.5% | -33.0% | -65.1% |
| ZY | SELL | 2022-01-24 | 2022-01-26 | $4.76 | $207K | -15.1% | -21.3% | -66.0% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.