Hans-Peter Gerber is CSO at SUTRO BIOPHARMA, INC. (STRO). They have made 1 open-market trade across 1 company since 2025, most recently 2026-09-18.
CIK 0001992979
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 $14K since 2025, never a sale. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| STRO | 12,367 | $123K |
Shares reported on the most recent Form 4, priced at the 2026-09-22 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| STRO | BUY | 2025-10-15 | 2025-10-16 | $0.80 | $14K | +20.1% | -7.6% | +37.6% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.