Jackson Benjamin, General Counsel at SERA Prognostics, Inc. ($SERA), sold shares on the open market eight times over the past year, totaling $67,667. His most recent sale occurred on March 11, 2026. These SERA insider sales rank 10,053rd among 11,678 individual insiders in our database, where the average sale value hits $8.6 million across about 6.4 transactions. Benjamin made no open market purchases in this period.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 12, 2026 | SERA PROGNOSTICS, INC. | $SERA | Jackson Benjamin | General Counsel | A | Class A Common Stock | 44215 | $0.00 | 158,935.0000 | 49,525,108 | 38.54% | 0.09% |
| March 12, 2026 | SERA PROGNOSTICS, INC. | $SERA | Jackson Benjamin | General Counsel | A | Stock Option (right to buy) | 68550 | $0.00 | 68,550.0000 | 49,525,108 | 9999.99% | 0.14% |
| March 11, 2026 | SERA PROGNOSTICS, INC. | $SERA | Jackson Benjamin | General Counsel | S | Class A Common Stock | 1027 | $2.04 | 114,720.0000 | 49,525,108 | 0.89% | 0.00% |
| March 9, 2026 | SERA PROGNOSTICS, INC. | $SERA | Jackson Benjamin | General Counsel | S | Class A Common Stock | 3119 | $1.96 | 115,747.0000 | 49,525,108 | 2.62% | 0.01% |
| Dec. 10, 2025 | SERA PROGNOSTICS, INC. | $SERA | Jackson Benjamin | General Counsel | S | Class A Common Stock | 892 | $3.31 | 118,866.0000 | 49,525,108 | 0.74% | 0.00% |
| Nov. 10, 2025 | SERA PROGNOSTICS, INC. | $SERA | Jackson Benjamin | General Counsel | S | Class A Common Stock | 7059 | $2.62 | 119,758.0000 | 49,525,108 | 5.57% | 0.01% |
| Sept. 11, 2025 | SERA PROGNOSTICS, INC. | $SERA | Jackson Benjamin | General Counsel | S | Class A Common Stock | 934 | $3.13 | 126,817.0000 | 33,156,936 | 0.73% | 0.00% |
| Aug. 8, 2025 | SERA PROGNOSTICS, INC. | $SERA | Jackson Benjamin | General Counsel | S | Class A Common Stock | 6447 | $2.54 | 127,751.0000 | 33,156,936 | 4.80% | 0.02% |
| June 10, 2025 | SERA PROGNOSTICS, INC. | $SERA | Jackson Benjamin | General Counsel | S | Class A Common Stock | 965 | $1.48 | 134,198.0000 | 33,156,936 | 0.71% | 0.00% |
| May 30, 2025 | SERA PROGNOSTICS, INC. | $SERA | Jackson Benjamin | General Counsel | A | Class A Common Stock | 3703 | $1.33 | 135,163.0000 | 33,156,936 | 2.82% | 0.01% |
| May 8, 2025 | SERA PROGNOSTICS, INC. | $SERA | Jackson Benjamin | General Counsel | S | Class A Common Stock | 7084 | $2.44 | 131,460.0000 | 33,156,936 | 5.11% | 0.02% |
| March 5, 2025 | SERA PROGNOSTICS, INC. | $SERA | Jackson Benjamin | General Counsel | A | Stock Option (right to buy) | 49420 | $0.00 | 49,420.0000 | 33,156,936 | 9999.99% | 0.15% |
| March 6, 2025 | SERA PROGNOSTICS, INC. | $SERA | Jackson Benjamin | General Counsel | S | Class A Common Stock | 2285 | $4.16 | 138,544.0000 | 33,156,936 | 1.62% | 0.01% |
| March 5, 2025 | SERA PROGNOSTICS, INC. | $SERA | Jackson Benjamin | General Counsel | A | Class A Common Stock | 34590 | $0.00 | 140,829.0000 | 33,156,936 | 32.56% | 0.10% |
| Feb. 13, 2025 | SERA PROGNOSTICS, INC. | $SERA | Jackson Benjamin | General Counsel | S | Class A Common Stock | 5915 | $4.58 | 106,239.0000 | 33,156,936 | 5.27% | 0.02% |
| Jan. 13, 2025 | SERA PROGNOSTICS, INC. | $SERA | Jackson Benjamin | General Counsel | S | Class A Common Stock | 7912 | $6.38 | 120,561.0000 | 33,156,936 | 6.16% | 0.02% |
| Jan. 10, 2025 | SERA PROGNOSTICS, INC. | $SERA | Jackson Benjamin | General Counsel | S | Class A Common Stock | 12041 | $7.36 | 129,704.0000 | 33,156,936 | 8.49% | 0.04% |
| Jan. 14, 2025 | SERA PROGNOSTICS, INC. | $SERA | Jackson Benjamin | General Counsel | S | Class A Common Stock | 8407 | $6.20 | 112,154.0000 | 33,156,936 | 6.97% | 0.03% |
| Jan. 10, 2025 | SERA PROGNOSTICS, INC. | $SERA | Jackson Benjamin | General Counsel | S | Class A Common Stock | 1231 | $8.05 | 128,473.0000 | 33,156,936 | 0.95% | 0.00% |
| Nov. 11, 2024 | SERA PROGNOSTICS, INC. | $SERA | Jackson Benjamin | General Counsel | S | Class A Common Stock | 4727 | $7.32 | 135,528.0000 | 33,522,726 | 3.37% | 0.01% |
| Aug. 7, 2024 | SERA PROGNOSTICS, INC. | $SERA | Jackson Benjamin | General Counsel | S | Class A Common Stock | 5022 | $7.42 | 140,255.0000 | 31,200,652 | 3.46% | 0.02% |
| May 8, 2024 | SERA PROGNOSTICS, INC. | $SERA | Jackson Benjamin | General Counsel | S | Class A Common Stock | 4902 | $9.59 | 145,277.0000 | 31,200,652 | 3.26% | 0.02% |
| March 6, 2024 | SERA PROGNOSTICS, INC. | $SERA | Jackson Benjamin | General Counsel | S | Class A Common Stock | 1856 | $9.02 | 150,179.0000 | 31,200,652 | 1.22% | 0.01% |
| Feb. 6, 2024 | SERA PROGNOSTICS, INC. | $SERA | Jackson Benjamin | General Counsel | S | Class A Common Stock | 5665 | $8.03 | 152,035.0000 | 31,200,652 | 3.59% | 0.02% |
| Dec. 7, 2023 | SERA PROGNOSTICS, INC. | $SERA | Jackson Benjamin | General Counsel | S | Class A Common Stock | 10000 | $5.22 | 157,700.0000 | 0 | 5.96% | 0.00% |
| Nov. 6, 2023 | SERA PROGNOSTICS, INC. | $SERA | Jackson Benjamin | General Counsel | A | Class A Common Stock | 125000 | $0.00 | 162,700.0000 | 0 | 331.57% | 0.00% |
| March 6, 2023 | SERA PROGNOSTICS, INC. | $SERA | Jackson Benjamin | General Counsel | A | Stock Option (right to buy) | 39100 | $0.00 | 39,100.0000 | 0 | 9999.99% | 0.00% |
| March 6, 2023 | SERA PROGNOSTICS, INC. | $SERA | Jackson Benjamin | General Counsel | A | Class A Common Stock | 24700 | $0.00 | 32,700.0000 | 0 | 308.75% | 0.00% |