James Ziegler is CCO & VP at GERON CORP (GERN). They have made 1 open-market trade across 1 company since 2025, most recently 2025-02-27.
CIK 0002035113
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 $160K since 2025, never a sale. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| GERN | 100,000 | $118K |
Shares reported on the most recent Form 4, priced at the 2025-03-03 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| GERN | BUY | 2025-02-27 | 2025-03-03 | $1.60 | $160K | -1.8% | -6.5% | -15.9% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.