Robert Gardner Harrison sold $4,680 of SERA
Chief Information Officer at SERA PROGNOSTICS, INC.. 2,000 shares at an average of $2.34, traded Feb 24, 2026, filed Feb 24, 2026.
Score components
- +15RoleOfficer
- 0Trade size$5k at market
- 0Share of holdings soldSold 2.4% of holdings
- +15Cluster7 insiders selling within 14 days
- -2010b5-1 planPre-scheduled under a 10b5-1 plan
What happened after comparable sells
Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.
Price around the trade, and since
From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™
Rows in this filing
Every transaction in Form 4 0001193125-26-067712, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Feb 24, 2026 | SOpen-market sale Class A Common Stock10b5-1 | -2,000 | $2.34 | $4,680 | 80,788 | Feb 24, 2026 |
Related signals
Other insiders at SERA PROGNOSTICS, INC. and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 30Weak | SERA PROGNOSTICS, INC. | Dyaarl Lee Anderson Jr. Chief Commercial Officer | $3,600 1,800 shares | -2% | |
| 30Weak | SERA PROGNOSTICS, INC. | Tiffany Eul Davis Inglis Chief Medical Officer | $972 486 shares | -1% | |
| 30Weak | SERA PROGNOSTICS, INC. | Benjamin Jackson General Counsel | $4,380 2,190 shares | -1% | |
| 40Moderate | SERA PROGNOSTICS, INC. | Zhenya Lindgardt Chief Executive Officer | $14k 7,022 shares | -1% | |
| 46Moderate | SERA PROGNOSTICS, INC. | Zhenya Lindgardt Chief Executive Officer | $40k 20,139 shares | -2% | |
| 37Weak | SERA PROGNOSTICS, INC. | Austin Aerts Chief Financial Officer | $14k 7,088 shares | -3% | |
| 30Weak | SERA PROGNOSTICS, INC. | John J. Boniface Chief Scientific Officer | $3,095 1,517 shares | -1% | |
| 30Weak | SERA PROGNOSTICS, INC. | Robert Gardner Harrison Chief Information Officer | $1,461 716 shares | -1% | |
| 30Weak | SERA PROGNOSTICS, INC. | Benjamin Jackson General Counsel | $2,095 1,027 shares | -1% | |
| 30Weak | SERA PROGNOSTICS, INC. | Paul Kearney Chief Data Officer | $2,848 1,396 shares | -1% |
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.