Mona Ashiya serves as Executive at Sierra Oncology, Inc., where they oversee executive responsibilities. Since joining the company, Mona Ashiya has executed 28 insider transactions totaling $43.6M, demonstrating a bearish approach to their equity position. Their most recent transaction on Aug 25, 2025 involved purchasing 5,255,106 shares valued at $4.6M.
Mona Ashiya currently holds 5,255,106 shares of Sierra Oncology, Inc. (SRRA), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Mona Ashiya has been a net seller of SRRA stock. They have purchased $11.0M and sold $32.6M worth of shares.
Mona Ashiya's most recent insider trade was on Aug 25, 2025, when they purchased 5,255,106 shares at $0.87 per share.
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| $0.87 |
| Discretionary |
| Jun 17, 2024 | IRON | $395.5K | Purchase | 10,986 | $36.00 | Discretionary |
| Jun 17, 2024 | IRON | $1.0M | Purchase | 28,404 | $36.00 | Discretionary |
| Jun 17, 2024 | IRON | $1.6M | Purchase | 43,944 | $36.00 | Discretionary |
| Dec 18, 2023 | IRON | $102.1K | Sale | 1,724 | $59.24 | Discretionary |
| Dec 18, 2023 | IRON | $65.5K | Option Exercise | 1,724 | $38.00 | Discretionary |
| Dec 14, 2023 | IRON | $5.8K | Sale | 100 | $57.73 | Discretionary |
| Dec 14, 2023 | IRON | $5.8K | Sale | 100 | $57.73 | Discretionary |
| Dec 14, 2023 | IRON | $13.0M | Sale | 228,500 | $56.75 | Discretionary |
| Dec 14, 2023 | IRON | $3.2M | Sale | 57,100 | $56.75 | Discretionary |
| Dec 14, 2023 | IRON | $8.4M | Sale | 147,600 | $56.75 | Discretionary |
| Dec 13, 2023 | IRON | $3.3M | Sale | 56,200 | $58.56 | Discretionary |
| Dec 13, 2023 | IRON | $2.1M | Sale | 36,400 | $58.56 | Discretionary |
| Dec 13, 2023 | IRON | $825.7K | Sale | 14,100 | $58.56 | Discretionary |
| Dec 12, 2023 | IRON | $559.5K | Sale | 9,300 | $60.16 | Discretionary |
| Dec 12, 2023 | IRON | $866.3K | Sale | 14,400 | $60.16 | Discretionary |
| Dec 12, 2023 | IRON | $216.6K | Sale | 3,600 | $60.16 | Discretionary |
| Feb 15, 2023 | IRON | $852.1K | Purchase | 37,049 | $23.00 | Discretionary |
| Feb 15, 2023 | IRON | $329.6K | Purchase | 14,329 | $23.00 | Discretionary |
| Feb 15, 2023 | IRON | $1.3M | Purchase | 57,318 | $23.00 | Discretionary |
| Jul 1, 2022 | SRRA | $12.5M | Disposition | 226,704 | $55.00 | Discretionary |
| Jul 1, 2022 | SRRA | $83.1M | Disposition | 1,511,362 | $55.00 | Discretionary |
| Jul 1, 2022 | SRRA | $12.5M | Disposition | 226,704 | $55.00 | Discretionary |
| Jan 26, 2022 | SRRA | $4.9M | Exercise | 374,962 | $13.20 | Discretionary |
| Jan 26, 2022 | SRRA | $742.4K | Exercise | 56,244 | $13.20 | Discretionary |
| Jan 26, 2022 | SRRA | $742.4K | Exercise | 56,244 | $13.20 | Discretionary |
| Jan 29, 2020 | SRRA | $0 | Conversion | 1,477,320 | $N/A | Discretionary |