Insider · CIK 0001401786
Aaron Tachibana
Files at PSNL (Personalis, Inc.). First filing Nov 20, 2024, latest Sep 22, 2026.
Aaron Tachibana files SEC Form 4 as CFO and COO at PSNL (Personalis, Inc.). Since Nov 20, 2024, Aaron Tachibana has reported 0 open-market buys worth $0 and 11 open-market sells worth $2.9M, the latest filed on Sep 22, 2026.
A track record needs three past buys with six months of prices behind them; Aaron Tachibana has 0, so none is measured yet.
The newest scored trade: sold $48k of PSNL on Sep 18, 2026, filed Sep 22, 2026, scored 44 (moderate). In the last 12 months: 0 buys worth $0 and 7 sells worth $2.9M.
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
PSNL: Personalis, 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 |
|---|---|---|---|---|---|
| 44Moderate | Personalis, Inc. | $48k 2,931 shares | -1% | +225% from low-11% from high | |
| 3Weak | Personalis, Inc. | $70k 4,982 shares | -2% | +212% from low0% from high | |
| 20Weak | Personalis, Inc. | $675k 51,251 shares | -20% | +196% from low0% from high | |
| 18Weak | Personalis, Inc. | $480k 40,000 shares | -17% | +175% from low0% from high | |
| 17Weak | Personalis, Inc. | $449k 38,799 shares | -16% | +159% from low0% from high | |
| 0Weak | Personalis, Inc. | $14k 1,201 shares | -1% | +275% from low0% from high | |
| 22Weak | Personalis, Inc. | $1.1M 103,668 shares | -39% | +274% from low0% from high | |
| 30Weak | Personalis, Inc. | $4,211 641 shares | -0% | +105% from low-18% from high | |
| 37Weak | Personalis, Inc. | $6,390 1,291 shares | -1% | +65% from low-25% from high | |
| 42Moderate | Personalis, Inc. | $26k 6,865 shares | -4% | - | |
| 37Weak | Personalis, Inc. | $4,954 1,307 shares | -1% | - |
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 |
|---|---|---|---|---|---|
| Jun 29, 2026 | PSNL PERSONALIS INC | 4,982 0.00% of outstanding | $65k | Jun 29, 2026 | $1.6M |
| Jun 26, 2026 | PSNL Personalis, Inc. | 51,251 0.05% of outstanding | $645k | Jun 26, 2026 | $930k |
| Jun 4, 2026 | PSNL Personalis, Inc. | 40,000 0.04% of outstanding | $431k | Jun 4, 2026 | $449k |
| May 29, 2026 | PSNL PERSONALIS INC | 38,799 0.04% of outstanding | $426k | May 29, 2026 | none |
| Jan 22, 2026 | PSNL PERSONALIS INC | 40,000 0.04% of outstanding | $386k | Jan 22, 2026 | $1.1M |
| Nov 25, 2025 | PSNL PERSONALIS INC | 103,668 0.12% of outstanding | $1.0M | Nov 25, 2025 | none |
Transactions
Every row this insider has filed, 28 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Sep 18, 2026 | PSNL Personalis, Inc. | SOpen-market sale Common Stock | -2,931 | $16.22 | $48k | 195,902 | 21 d ago |
| Jun 29, 2026 | PSNL Personalis, Inc. | MOption exercise Common Stock10b5-1 | +4,982 | $5.32 | $27k | 203,815 | Jun 29, 2026 |
| Jun 29, 2026 | PSNL Personalis, Inc. | SOpen-market sale Common Stock10b5-1 | -4,982 | $14.00 | $70k | 198,833 | Jun 29, 2026 |
| Jun 29, 2026 | PSNL Personalis, Inc. | MOption exercise Stock Option (right to buy)derivative10b5-1 | -4,982 | $0.00 | $0 | 2,489 | Jun 29, 2026 |
| Jun 26, 2026 | PSNL Personalis, Inc. | MOption exercise Common Stock10b5-1 | +28,832 | $9.16 | $264k | 227,665 | Jun 26, 2026 |
| Jun 26, 2026 | PSNL Personalis, Inc. | MOption exercise Common Stock10b5-1 | +22,419 | $5.32 | $119k | 250,084 | Jun 26, 2026 |
| Jun 26, 2026 | PSNL Personalis, Inc. | SOpen-market sale Common Stock10b5-1 | -51,251 | $13.18 | $675k | 198,833 | Jun 26, 2026 |
| Jun 26, 2026 | PSNL Personalis, Inc. | MOption exercise Stock Option (right to buy)derivative10b5-1 | -28,832 | $0.00 | $0 | 0 | Jun 26, 2026 |
| Jun 26, 2026 | PSNL Personalis, Inc. | MOption exercise Stock Option (right to buy)derivative10b5-1 | -22,419 | $0.00 | $0 | 7,471 | Jun 26, 2026 |
| Jun 4, 2026 | PSNL Personalis, Inc. | MOption exercise Common Stock10b5-1 | +40,000 | $9.16 | $366k | 238,833 | Jun 5, 2026 |
| Jun 4, 2026 | PSNL Personalis, Inc. | SOpen-market sale Common Stock10b5-1 | -40,000 | $12.01 | $480k | 198,833 | Jun 5, 2026 |
| Jun 4, 2026 | PSNL Personalis, Inc. | MOption exercise Stock Option (right to buy)derivative10b5-1 | -40,000 | $0.00 | $0 | 28,832 | Jun 5, 2026 |
| May 29, 2026 | PSNL Personalis, Inc. | MOption exercise Common Stock10b5-1 | +38,799 | $9.16 | $355k | 237,632 | May 29, 2026 |
| May 29, 2026 | PSNL Personalis, Inc. | SOpen-market sale Common Stock10b5-1 | -38,799 | $11.58 | $449k | 198,833 | May 29, 2026 |
| May 29, 2026 | PSNL Personalis, Inc. | MOption exercise Stock Option (right to buy)derivative10b5-1 | -38,799 | $0.00 | $0 | 68,832 | May 29, 2026 |
| Mar 15, 2026 | PSNL Personalis, Inc. | AGrant or award Common Stock | +34,375 | $0.00 | $0 | 198,833 | Mar 17, 2026 |
| Mar 15, 2026 | PSNL Personalis, Inc. | AGrant or award Stock Option (right to buy)derivative | +206,250 | $0.00 | $0 | 206,250 | Mar 17, 2026 |
| Feb 23, 2026 | PSNL Personalis, Inc. | AGrant or award Stock Option (right to buy)derivative | +15,000 | $0.00 | $0 | 15,000 | Feb 25, 2026 |
| Jan 22, 2026 | PSNL Personalis, Inc. | MOption exercise Common Stock10b5-1 | +1,201 | $9.16 | $11k | 165,659 | Jan 23, 2026 |
| Jan 22, 2026 | PSNL Personalis, Inc. | SOpen-market sale Common Stock10b5-1 | -1,201 | $11.50 | $14k | 164,458 | Jan 23, 2026 |
| Jan 22, 2026 | PSNL Personalis, Inc. | MOption exercise Stock Option (right to buy)derivative10b5-1 | -1,201 | $0.00 | $0 | 107,631 | Jan 23, 2026 |
| Nov 25, 2025 | PSNL Personalis, Inc. | MOption exercise Common Stock10b5-1 | +103,668 | $9.16 | $950k | 268,126 | Nov 28, 2025 |
| Nov 25, 2025 | PSNL Personalis, Inc. | SOpen-market sale Common Stock10b5-1 | -103,668 | $10.78 | $1.1M | 164,458 | Nov 28, 2025 |
| Nov 25, 2025 | PSNL Personalis, Inc. | MOption exercise Stock Option (right to buy)derivative10b5-1 | -103,668 | $0.00 | $0 | 108,832 | Nov 28, 2025 |
| Jul 28, 2025 | PSNL Personalis, Inc. | SOpen-market sale Common Stock | -641 | $6.57 | $4,211 | 164,458 | Jul 30, 2025 |
| May 16, 2025 | PSNL Personalis, Inc. | SOpen-market sale Common Stock | -1,291 | $4.95 | $6,390 | 165,099 | May 20, 2025 |
| Dec 16, 2024 | PSNL Personalis, Inc. | SOpen-market sale Common Stock | -6,865 | $3.82 | $26k | 167,098 | Dec 18, 2024 |
| Nov 18, 2024 | PSNL Personalis, Inc. | SOpen-market sale Common Stock | -1,307 | $3.79 | $4,954 | 173,963 | Nov 20, 2024 |
Questions about Aaron Tachibana
Answered from the filings on this page, as of the latest one.
Is Aaron Tachibana buying or selling?
In the last 12 months Aaron Tachibana reported 0 open-market buys worth $0 and 7 open-market sells worth $2.9M on SEC Form 4; the latest was sold $48k of PSNL on Sep 18, 2026. Grants, option exercises and tax withholding are not counted.
How did Aaron Tachibana's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Aaron Tachibana has 0.
Where does Aaron Tachibana file Form 4?
Aaron Tachibana has filed Form 4 at PSNL (Personalis, Inc.) as CFO AND COO. 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.