The following table details the insider trading activities
(stock purchases, stock sales, and stock option exercises) of Harrison Robert Gardner since 2023.
This trader's CIK number is 1421563.
At the time of last reporting, Harrison Robert Gardner was the Chief Information Officer of Sera Prognostics, Inc.. (stock ticker symbol SERA).
Also see all insider trading activities at Sera Prognostics, Inc..
| Insider Buying | Insider Sales | Option Exercises | |||||
|---|---|---|---|---|---|---|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
| 2025 | SERA | 0 | $0 | 50,629 | $234,109 | 0 | $0 |
| 2024 | SERA | 0 | $0 | 22,454 | $183,647 | 0 | $0 |
| 2023 | SERA | 0 | $0 | 5,000 | $16,150 | 0 | $0 |
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|---|---|---|---|---|
| 2025-08-20 | SERA | Sale | 6,000 | 2.22 | 13,320 |
| 2025-08-08 | SERA | Sale | 5,962 | 2.54 | 15,143 |
| 2025-06-10 | SERA | Sale | 667 | 1.48 | 987 |
| 2025-05-08 | SERA | Sale | 6,551 | 2.44 | 15,984 |
| 2025-03-07 | SERA | Sale | 3,874 | 4.16 | 16,115 |
| 2025-03-06 | SERA | Sale | 3,251 | 4.16 | 13,524 |
| 2025-02-12 | SERA | Sale | 7,297 | 4.58 | 33,420 |
| 2025-02-11 | SERA | Sale | 554 | 3.97 | 2,199 |
| 2025-01-10 | SERA | Sale | 14,209 | 7.66 | 108,769 |
| 2025-01-13 | SERA | Sale | 2,264 | 6.47 | 14,648 |
| 2024-11-11 | SERA | Sale | 4,727 | 7.32 | 34,601 |
| 2024-08-07 | SERA | Sale | 5,022 | 7.42 | 37,263 |
| 2024-05-08 | SERA | Sale | 4,902 | 9.59 | 47,010 |
| 2024-03-06 | SERA | Sale | 2,138 | 9.02 | 19,284 |
| 2024-02-06 | SERA | Sale | 5,665 | 8.03 | 45,489 |
| 2023-06-05 | SERA | Sale | 5,000 | 3.23 | 16,150 |
Insider trading activities including stock purchases, stock sales, and option exercises listed in the above table cannot be completely guaranteed as to their accuracy. For more information regarding the trades made by Harrison Robert Gardner (Chief Information Officer of Sera Prognostics, Inc. at the time of this reporting) see the Securities and Exchange Commission (SEC) website.