Shai Weiss is Director & 10% at Gevo, Inc. (GEVO). They have made 1 open-market trade across 1 company since 2011, most recently 2026-06-25.
CIK 0001478381
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.
1 open-market purchase totalling $2.8M since 2011, never a sale. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| GEVO | BUY | 2011-02-14 | 2011-02-16 | $15.00 | $2.8M | -34.7% | +6.1% | +6.1% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.