William D. Turner is Chief Reg & Tech Ops Officer at Sierra Oncology, Inc. (SRRA). They have made 5 open-market trades across 2 companies since 2022, most recently 2026-02-23.
CIK 0001819688
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 5 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| VERA | 45,313 | $1.3M |
| SRRA | 6,347 | $349K |
| Total | $1.6M |
Shares reported on the most recent Form 4, priced at the 2026-02-25 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| VERA | SELL | 2026-02-23 | 2026-02-25 | $41.98 | $92K | -5.5% | -5.8% | -16.8% |
| VERA | SELL · 10b5-1 | 2025-12-15 | 2025-12-17 | $50.08 | $501K | +4.8% | -4.8% | -19.5% |
| VERA | SELL · 10b5-1 | 2025-12-08 | 2025-12-10 | $45.31 | $453K | +21.5% | +10.0% | -9.1% |
| VERA | SELL · 10b5-1 | 2025-12-03 | 2025-12-04 | $40.00 | $400K | +11.0% | +8.1% | -8.9% |
| SRRA | SELL | 2022-04-05 | 2022-04-07 | $37.25 | $477K | +46.9% | +46.7% | N/A |
| SRRA | SELL · 10b5-1 | 2022-03-18 | 2022-03-22 | $37.05 | $4K | -5.8% | +52.1% | +53.4% |
| SRRA | SELL | 2022-03-17 | 2022-03-17 | $37.06 | $256K | -7.0% | +50.4% | +51.0% |
| SRRA | SELL | 2022-02-07 | 2022-02-08 | $32.32 | $323K | -2.8% | -7.4% | +67.1% |
| SRRA | SELL | 2022-01-26 | 2022-01-28 | $27.05 | $135K | +32.2% | +18.4% | +108.9% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.