| Insider | Role | Shares | Value | Buys | Sells |
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| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
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| Insider | Role | Shares | Value | Buys | Sells |
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| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
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Chief Information Officer
1 company
Harrison Robert Gardner is a Chief Information Officer at SERA. Recent filings cover 0 purchases and 30 sales. Those positions are worth an estimated $156K at current prices.
Our model assigns Harrison Robert Gardner a strong insider score of 75/100, based on 29 past trades. Over a 12-month horizon, 90.0% of those trades were profitable, with an average 12-month return of +30.9%.
Harrison Robert Gardner's largest disclosed position is in SERA as Chief Information Officer, worth about $156K. The recent filings there lean toward selling, a net 107,558 shares.
| Date | Ticker | Role | Type | Shares | Price | Value | Chg% | 3M | 12M | SEC |
|---|---|---|---|---|---|---|---|---|---|---|
| Mar 11, 2026 | SERA Sera Prognostics, Inc. | Chief Information Officer | Sell | 716 | $2.04 | $1,460.64 | -0.9% | +10.4% | - | |
| Mar 9, 2026 | SERA Sera Prognostics, Inc. | Chief Information Officer | Sell | 3,360 | $1.96 | $6,585.60 | -4.2% | +8.8% | - | |
| Feb 24, 2026 | SERA Sera Prognostics, Inc. | Chief Information Officer | Sell10b5-1 | 2,000 | $2.34 | $4,680.00 | -2.4% | -5.3% | - | |
| Jan 27, 2026 | SERA Sera Prognostics, Inc. | Chief Information Officer | Sell10b5-1 | 2,000 | $2.97 | $5,940.00 | -2.4% | -33.3% | - | |
| Dec 30, 2025 | SERA Sera Prognostics, Inc. | Chief Information Officer | Sell10b5-1 | 2,000 | $3.00 | $6,000.00 | -2.3% | -33.8% | - | |
| Dec 10, 2025 | SERA Sera Prognostics, Inc. | Chief Information Officer | Sell | 616 | $3.31 | $2,038.96 | -0.7% | -46.8% | - | |
| Dec 2, 2025 | SERA Sera Prognostics, Inc. | Chief Information Officer | Sell10b5-1 | 2,000 | $2.93 | $5,860.00 | -2.2% | -23.1% | - | |
| Nov 10, 2025 | SERA Sera Prognostics, Inc. | Chief Information Officer | Sell | 6,528 | $2.62 | $17,103.36 | -6.8% | +5.1% | - | |
| Nov 4, 2025 | SERA Sera Prognostics, Inc. | Chief Information Officer | Sell10b5-1 | 2,000 | $3.07 | $6,140.00 | -2.0% | -7.9% | - | |
| Oct 7, 2025 | SERA Sera Prognostics, Inc. | Chief Information Officer | Sell10b5-1 | 2,000 | $3.18 | $6,360.00 | -2.0% | -5.8% | -36.3% |