John J. Boniface serves as Executive at SERA PROGNOSTICS, INC., where they oversee executive responsibilities. Since joining the company, John J. Boniface has executed 51 insider transactions totaling $1.5M, demonstrating a bearish approach to their equity position. Their most recent transaction on Dec 10, 2025 involved selling 1,332 shares valued at $4.4K.
John J. Boniface currently holds 150,397 shares of SERA PROGNOSTICS, INC. (SERA), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, John J. Boniface has been a net seller of SERA stock. They have purchased $0 and sold $1.5M worth of shares.
John J. Boniface's most recent insider trade was on Dec 10, 2025, when they sold 1,332 shares at $3.31 per share.
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| $2.62 |
| Discretionary |
| Sep 11, 2025 | SERA | $4.4K | Sale | 1,395 | $3.13 | Discretionary |
| Aug 8, 2025 | SERA | $18.0K | Sale | 7,094 | $2.54 | Discretionary |
| Aug 7, 2024 | SERA | $37.3K | Sale | 5,022 | $7.42 | Discretionary |
| May 8, 2024 | SERA | $47.0K | Sale | 4,902 | $9.59 | Discretionary |
| Mar 28, 2024 | SERA | $22.3K | Option Exercise | 24,474 | $0.91 | Planned |
| Mar 28, 2024 | SERA | $221.2K | Sale | 24,474 | $9.04 | Planned |
| Mar 27, 2024 | SERA | $470.5K | Sale | 48,909 | $9.62 | Planned |
| Mar 27, 2024 | SERA | $44.5K | Option Exercise | 48,909 | $0.91 | Planned |
| Mar 27, 2024 | SERA | $36.1K | Sale | 3,753 | $9.62 | Planned |
| Mar 26, 2024 | SERA | $204.7K | Sale | 21,438 | $9.55 | Discretionary |
| Mar 25, 2024 | SERA | $201.7K | Sale | 22,163 | $9.10 | Discretionary |
| Mar 6, 2024 | SERA | $15.0K | Sale | 1,664 | $9.02 | Discretionary |
| Feb 6, 2024 | SERA | $45.5K | Sale | 5,665 | $8.03 | Discretionary |
| Dec 7, 2023 | SERA | $24.0K | Sale | 5,000 | $4.80 | Discretionary |
| Nov 6, 2023 | SERA | $0 | Award | 125,000 | $N/A | Discretionary |
| Mar 6, 2023 | SERA | $0 | Award | 22,100 | $N/A | Discretionary |
| Sep 8, 2022 | SERA | $616 | Option Exercise | 844 | $0.73 | Discretionary |
| Jul 27, 2022 | SERA | $2.2K | Sale | 1,000 | $2.22 | Discretionary |
| Jul 27, 2022 | SERA | $730 | Option Exercise | 1,000 | $0.73 | Discretionary |
| Jul 26, 2022 | SERA | $5.9K | Sale | 2,725 | $2.15 | Discretionary |
| Jul 19, 2022 | SERA | $5.1K | Sale | 2,725 | $1.86 | Discretionary |
| Jul 12, 2022 | SERA | $5.0K | Sale | 2,725 | $1.84 | Discretionary |
| Jul 5, 2022 | SERA | $4.4K | Sale | 2,725 | $1.63 | Discretionary |
| Jun 29, 2022 | SERA | $730 | Option Exercise | 1,000 | $0.73 | Discretionary |
| Jun 29, 2022 | SERA | $1.7K | Sale | 1,000 | $1.72 | Discretionary |
| Jun 28, 2022 | SERA | $5.2K | Sale | 2,725 | $1.89 | Discretionary |
| Jun 21, 2022 | SERA | $3.6K | Sale | 2,725 | $1.31 | Discretionary |
| Jun 14, 2022 | SERA | $3.3K | Sale | 2,725 | $1.21 | Discretionary |