William D. Turner serves as Executive at Sierra Oncology, Inc., where they oversee executive responsibilities. Since joining the company, William D. Turner has executed 21 insider transactions totaling $2.3M, demonstrating a bearish approach to their equity position. Their most recent transaction on Feb 23, 2026 involved selling 2,187 shares valued at $91.8K.
William D. Turner currently holds 45,313 shares of Sierra Oncology, Inc. (SRRA), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, William D. Turner has been a net seller of SRRA stock. They have purchased $0 and sold $2.3M worth of shares.
William D. Turner's most recent insider trade was on Feb 23, 2026, when they sold 2,187 shares at $41.98 per share.
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| $N/A |
| Discretionary |
| Feb 4, 2026 | VERA | $0 | Award | 25,000 | $N/A | Discretionary |
| Dec 15, 2025 | VERA | $500.8K | Sale | 10,000 | $50.08 | Discretionary |
| Dec 15, 2025 | VERA | $155.3K | Option Exercise | 10,000 | $15.53 | Discretionary |
| Dec 8, 2025 | VERA | $155.3K | Option Exercise | 10,000 | $15.53 | Discretionary |
| Dec 8, 2025 | VERA | $453.1K | Sale | 10,000 | $45.31 | Discretionary |
| Dec 3, 2025 | VERA | $155.3K | Option Exercise | 10,000 | $15.53 | Discretionary |
| Dec 3, 2025 | VERA | $400.0K | Sale | 10,000 | $40.00 | Discretionary |
| Apr 6, 2022 | SRRA | $76.5K | Option Exercise | 6,347 | $12.05 | Discretionary |
| Apr 6, 2022 | SRRA | $236.4K | Sale | 6,347 | $37.25 | Discretionary |
| Apr 5, 2022 | SRRA | $3.7K | Sale | 100 | $37.09 | Discretionary |
| Apr 5, 2022 | SRRA | $1.2K | Option Exercise | 100 | $12.05 | Discretionary |
| Mar 18, 2022 | SRRA | $3.7K | Sale | 100 | $37.05 | Discretionary |
| Mar 18, 2022 | SRRA | $1.2K | Option Exercise | 100 | $12.05 | Discretionary |
| Mar 17, 2022 | SRRA | $41.6K | Option Exercise | 3,453 | $12.05 | Discretionary |
| Mar 17, 2022 | SRRA | $128.0K | Sale | 3,453 | $37.06 | Discretionary |
| Feb 7, 2022 | SRRA | $323.2K | Sale | 10,000 | $32.32 | Discretionary |
| Feb 7, 2022 | SRRA | $120.5K | Option Exercise | 10,000 | $12.05 | Discretionary |
| Jan 26, 2022 | SRRA | $60.3K | Option Exercise | 5,000 | $12.05 | Discretionary |
| Jan 26, 2022 | SRRA | $135.3K | Sale | 5,000 | $27.05 | Discretionary |