Insider · CIK 0001779964
Benjamin Jackson
Files at SERA (SERA PROGNOSTICS, INC.). First filing Nov 12, 2024, latest Sep 11, 2026.
Benjamin Jackson files SEC Form 4 as officer at SERA (SERA PROGNOSTICS, INC.). Since Nov 12, 2024, Benjamin Jackson has reported 0 open-market buys worth $0 and 14 open-market sells worth $349k, the latest filed on Sep 11, 2026.
A track record needs three past buys with six months of prices behind them; Benjamin Jackson has 0, so none is measured yet.
The newest scored trade: sold $4,380 of SERA on Sep 10, 2026, filed Sep 11, 2026, scored 30 (weak). In the last 12 months: 0 buys worth $0 and 6 sells worth $38k.
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
SERA: SERA PROGNOSTICS, INC.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 30Weak | SERA PROGNOSTICS, INC. | $4,380 2,190 shares | -1% | +29% from low-45% from high | |
| 30Weak | SERA PROGNOSTICS, INC. | $4,380 2,179 shares | -1% | +29% from low-53% from high | |
| 30Weak | SERA PROGNOSTICS, INC. | $2,095 1,027 shares | -1% | +30% from low-55% from high | |
| 30Weak | SERA PROGNOSTICS, INC. | $6,113 3,119 shares | -3% | +30% from low-55% from high | |
| 30Weak | SERA PROGNOSTICS, INC. | $2,953 892 shares | -1% | +128% from low-61% from high | |
| 30Weak | SERA PROGNOSTICS, INC. | $18k 7,059 shares | -6% | +71% from low-71% from high | |
| 30Weak | SERA PROGNOSTICS, INC. | $2,923 934 shares | -1% | +106% from low-65% from high | |
| 30Weak | SERA PROGNOSTICS, INC. | $16k 6,447 shares | -5% | +66% from low-72% from high | |
| 30Weak | SERA PROGNOSTICS, INC. | $1,428 965 shares | -1% | 0% from low-83% from high | |
| 30Weak | SERA PROGNOSTICS, INC. | $17k 7,084 shares | -5% | 0% from low-76% from high | |
| 30Weak | SERA PROGNOSTICS, INC. | $9,506 2,285 shares | -2% | +6% from low-53% from high | |
| 35Weak | SERA PROGNOSTICS, INC. | $27k 5,915 shares | -5% | +6% from low-51% from high | |
| 27Weak | SERA PROGNOSTICS, INC. | $201k 29,591 shares | -21% | +15% from low-21% from high | |
| 36Weak | SERA PROGNOSTICS, INC. | $35k 4,727 shares | -3% | - |
Planned sales
Form 144 notices this insider filed before selling restricted or control stock, newest first.
| Filed | Company | Shares | Value | Sale date | Past 3 months |
|---|---|---|---|---|---|
| Sep 11, 2026 | SERA Sera Prognostics, Inc. | 2,190 0.01% of outstanding | $4,380 | Sep 10, 2026 | $4,369 |
| Jun 15, 2026 | SERA Sera Prognostics, Inc. | 2,179 0.01% of outstanding | $4,369 | Jun 11, 2026 | $2,096 |
| Mar 12, 2026 | SERA Sera Prognostics, Inc. | 1,027 0.00% of outstanding | $2,096 | Mar 11, 2026 | $9,073 |
| Mar 10, 2026 | SERA Sera Prognostics, Inc. | 3,119 0.01% of outstanding | $6,123 | Mar 9, 2026 | $2,950 |
| Dec 11, 2025 | SERA Sera Prognostics, Inc. | 892 0.00% of outstanding | $2,950 | Dec 10, 2025 | $21k |
| Nov 12, 2025 | SERA Sera Prognostics, Inc. | 7,059 0.02% of outstanding | $19k | Nov 10, 2025 | $2,922 |
| Sep 12, 2025 | SERA Sera Prognostics, Inc. | 934 0.00% of outstanding | $2,922 | Sep 11, 2025 | $16k |
| Aug 11, 2025 | SERA Sera Prognostics, Inc. | 6,447 0.02% of outstanding | $16k | Aug 8, 2025 | $19k |
| Jun 11, 2025 | SERA Sera Prognostics, Inc. | 965 0.00% of outstanding | $1,433 | Jun 10, 2025 | $17k |
| May 9, 2025 | SERA Sera Prognostics, Inc. | 7,084 0.02% of outstanding | $17k | May 8, 2025 | $37k |
| Mar 7, 2025 | SERA Sera Prognostics, Inc. | 2,285 0.01% of outstanding | $9,515 | Mar 6, 2025 | $228k |
| Feb 14, 2025 | SERA Sera Prognostics, Inc. | 5,915 0.02% of outstanding | $27k | Feb 12, 2025 | $236k |
| Jan 10, 2025 | SERA SERA PROGNOSTICS INC | 45,285 0.14% of outstanding | $377k | Jan 10, 2025 | $35k |
| Nov 13, 2024 | SERA Sera Prognostics, Inc. | 4,727 0.01% of outstanding | $35k | Nov 11, 2024 | none |
Transactions
Every row this insider has filed, 23 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Sep 10, 2026 | SERA SERA PROGNOSTICS, INC. | SOpen-market sale Class A Common Stock | -2,190 | $2.00 | $4,380 | 159,566 | 32 d ago |
| Jun 11, 2026 | SERA SERA PROGNOSTICS, INC. | SOpen-market sale Class A Common Stock | -2,179 | $2.01 | $4,380 | 161,756 | Jun 15, 2026 |
| May 29, 2026 | SERA SERA PROGNOSTICS, INC. | AGrant or award Class A Common Stock | +5,000 | $1.84 | $9,200 | 163,935 | Jun 1, 2026 |
| Mar 12, 2026 | SERA SERA PROGNOSTICS, INC. | AGrant or award Class A Common Stock | +44,215 | $0.00 | $0 | 158,935 | Mar 13, 2026 |
| Mar 12, 2026 | SERA SERA PROGNOSTICS, INC. | AGrant or award Stock Option (right to buy)derivative | +68,550 | $0.00 | $0 | 68,550 | Mar 13, 2026 |
| Mar 11, 2026 | SERA SERA PROGNOSTICS, INC. | SOpen-market sale Class A Common Stock | -1,027 | $2.04 | $2,095 | 114,720 | Mar 12, 2026 |
| Mar 9, 2026 | SERA SERA PROGNOSTICS, INC. | SOpen-market sale Class A Common Stock | -3,119 | $1.96 | $6,113 | 115,747 | Mar 10, 2026 |
| Dec 10, 2025 | SERA SERA PROGNOSTICS, INC. | SOpen-market sale Class A Common Stock | -892 | $3.31 | $2,953 | 118,866 | Dec 11, 2025 |
| Nov 10, 2025 | SERA SERA PROGNOSTICS, INC. | SOpen-market sale Class A Common Stock | -7,059 | $2.62 | $18k | 119,758 | Nov 12, 2025 |
| Sep 11, 2025 | SERA SERA PROGNOSTICS, INC. | SOpen-market sale Class A Common Stock | -934 | $3.13 | $2,923 | 126,817 | Sep 12, 2025 |
| Aug 8, 2025 | SERA SERA PROGNOSTICS, INC. | SOpen-market sale Class A Common Stock | -6,447 | $2.54 | $16k | 127,751 | Aug 11, 2025 |
| Jun 10, 2025 | SERA SERA PROGNOSTICS, INC. | SOpen-market sale Class A Common Stock | -965 | $1.48 | $1,428 | 134,198 | Jun 12, 2025 |
| May 30, 2025 | SERA SERA PROGNOSTICS, INC. | AGrant or award Class A Common Stock | +3,703 | $1.33 | $4,925 | 135,163 | Jun 12, 2025 |
| May 8, 2025 | SERA SERA PROGNOSTICS, INC. | SOpen-market sale Class A Common Stock | -7,084 | $2.44 | $17k | 131,460 | May 9, 2025 |
| Mar 5, 2025 | SERA SERA PROGNOSTICS, INC. | AGrant or award Class A Common Stock | +34,590 | $0.00 | $0 | 140,829 | Mar 7, 2025 |
| Mar 6, 2025 | SERA SERA PROGNOSTICS, INC. | SOpen-market sale Class A Common Stock | -2,285 | $4.16 | $9,506 | 138,544 | Mar 7, 2025 |
| Mar 5, 2025 | SERA SERA PROGNOSTICS, INC. | AGrant or award Stock Option (right to buy)derivative | +49,420 | $0.00 | $0 | 49,420 | Mar 7, 2025 |
| Feb 13, 2025 | SERA SERA PROGNOSTICS, INC. | SOpen-market sale Class A Common Stock | -5,915 | $4.58 | $27k | 106,239 | Feb 14, 2025 |
| Jan 10, 2025 | SERA SERA PROGNOSTICS, INC. | SOpen-market sale Class A Common Stock10b5-1 | -12,041 | $7.36 | $89k | 129,704 | Jan 14, 2025 |
| Jan 10, 2025 | SERA SERA PROGNOSTICS, INC. | SOpen-market sale Class A Common Stock10b5-1 | -1,231 | $8.05 | $9,910 | 128,473 | Jan 14, 2025 |
| Jan 13, 2025 | SERA SERA PROGNOSTICS, INC. | SOpen-market sale Class A Common Stock10b5-1 | -7,912 | $6.38 | $50k | 120,561 | Jan 14, 2025 |
| Jan 14, 2025 | SERA SERA PROGNOSTICS, INC. | SOpen-market sale Class A Common Stock10b5-1 | -8,407 | $6.20 | $52k | 112,154 | Jan 14, 2025 |
| Nov 11, 2024 | SERA SERA PROGNOSTICS, INC. | SOpen-market sale Class A Common Stock | -4,727 | $7.32 | $35k | 135,528 | Nov 12, 2024 |
Questions about Benjamin Jackson
Answered from the filings on this page, as of the latest one.
Is Benjamin Jackson buying or selling?
In the last 12 months Benjamin Jackson reported 0 open-market buys worth $0 and 6 open-market sells worth $38k on SEC Form 4; the latest was sold $4,380 of SERA on Sep 10, 2026. Grants, option exercises and tax withholding are not counted.
How did Benjamin Jackson's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Benjamin Jackson has 0.
Where does Benjamin Jackson file Form 4?
Benjamin Jackson has filed Form 4 at SERA (SERA PROGNOSTICS, INC.) as General Counsel. A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
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.