Aaron Tachibana insider trades: Personalis (PSNL) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Aaron reports to the SEC
Open-market buys and sales
61 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Sep 18, 2026 | PSNL | ↓ Sell | 2,931 | $16.22 | $48K | Direct | Sep 22, 2026 (4d) |
| Jun 29, 2026 | PSNL | ↓ Sell | 4,982 | $14.00 | $70K | Direct | Jun 29, 2026 (0d) |
| Jun 26, 2026 | PSNL | ↓ Sell | 51,251 | $13.18 | $675K | Direct | Jun 26, 2026 (0d) |
| Jun 4, 2026 | PSNL | ↓ Sell | 40,000 | $12.01 | $480K | Direct | Jun 5, 2026 (1d) |
| May 29, 2026 | PSNL | ↓ Sell | 38,799 | $11.58 | $449K | Direct | May 29, 2026 (0d) |
| Jan 22, 2026 | PSNL | ↓ Sell | 1,201 | $11.50 | $14K | Direct | Jan 23, 2026 (1d) |
| Nov 25, 2025 | PSNL | ↓ Sell | 103,668 | $10.78 | $1.1M | Direct | Nov 28, 2025 (3d) |
| Jul 28, 2025 | PSNL | ↓ Sell | 641 | $6.57 | $4K | Direct | Jul 30, 2025 (2d) |
| May 16, 2025 | PSNL | ↓ Sell | 1,291 | $4.95 | $6K | Direct | May 20, 2025 (4d) |
| Jan 28, 2025 | PSNL | ↓ Sell | 708 | $5.79 | $4K | Direct | Jan 30, 2025 (2d) |
| Dec 16, 2024 | PSNL | ↓ Sell | 6,865 | $3.82 | $26K | Direct | Dec 18, 2024 (2d) |
| Nov 18, 2024 | PSNL | ↓ Sell | 1,307 | $3.79 | $5K | Direct | Nov 20, 2024 (2d) |
| Jul 30, 2024 | PSNL | ↓ Sell | 742 | $2.97 | $2K | Direct | Aug 1, 2024 (2d) |
| Jun 17, 2024 | PSNL | ↓ Sell | 7,176 | $1.29 | $9K | Direct | Jun 20, 2024 (3d) |
| May 17, 2024 | PSNL | ↓ Sell | 1,333 | $1.38 | $2K | Direct | May 21, 2024 (4d) |
| Jan 29, 2024 | PSNL | ↓ Sell | 716 | $1.37 | $981 | Direct | Jan 31, 2024 (2d) |
| Dec 15, 2023 | PSNL | ↓ Sell | 6,747 | $1.47 | $10K | Direct | Dec 19, 2023 (4d) |
| Nov 16, 2023 | PSNL | ↓ Sell | 1,344 | $1.04 | $1K | Direct | Nov 20, 2023 (4d) |
| Jul 31, 2023 | PSNL | ↓ Sell | 662 | $2.26 | $1K | Direct | Aug 2, 2023 (2d) |
| Jun 16, 2023 | PSNL | ↓ Sell | 6,904 | $2.07 | $14K | Direct | Jun 21, 2023 (5d) |
| May 17, 2023 | PSNL | ↓ Sell | 1,389 | $1.98 | $3K | Direct | May 19, 2023 (2d) |
| Mar 17, 2023 | PSNL | ↓ Sell | 3,945 | $2.83 | $11K | Direct | Mar 21, 2023 (4d) |
| Jan 31, 2023 | PSNL | ↓ Sell | 767 | $2.20 | $2K | Direct | Feb 2, 2023 (2d) |
| Dec 20, 2022 | PSNL | ↓ Sell | 3,843 | $1.92 | $7K | Direct | Dec 22, 2022 (2d) |
| Dec 15, 2022 | PSNL | ↓ Sell | 7,177 | $2.50 | $18K | Direct | Dec 19, 2022 (4d) |
| Dec 2, 2022 | PSNL | ↓ Sell | 4,360 | $2.60 | $11K | Direct | Dec 6, 2022 (4d) |
| Nov 16, 2022 | PSNL | ↓ Sell | 1,294 | $2.71 | $4K | Direct | Nov 18, 2022 (2d) |
| Sep 20, 2022 | PSNL | ↓ Sell | 3,474 | $3.48 | $12K | Direct | Sep 22, 2022 (2d) |
| Sep 2, 2022 | PSNL | ↓ Sell | 4,168 | $3.33 | $14K | Direct | Sep 8, 2022 (6d) |
| Jul 28, 2022 | PSNL | ↓ Sell | 632 | $3.91 | $2K | Direct | Aug 1, 2022 (4d) |
| Jun 17, 2022 | PSNL | ↓ Sell | 3,440 | $3.29 | $11K | Direct | Jun 21, 2022 (4d) |
| Jun 15, 2022 | PSNL | ↓ Sell | 6,818 | $3.24 | $22K | Direct | Jun 17, 2022 (2d) |
| Jun 2, 2022 | PSNL | ↓ Sell | 4,187 | $3.59 | $15K | Direct | Jun 6, 2022 (4d) |
| May 16, 2022 | PSNL | ↓ Sell | 1,286 | $4.86 | $6K | Direct | May 18, 2022 (2d) |
| Mar 2, 2022 | PSNL | ↓ Sell | 4,511 | $10.18 | $46K | Direct | Mar 4, 2022 (2d) |
| Jan 28, 2022 | PSNL | ↓ Sell | 705 | $9.93 | $7K | Direct | Feb 1, 2022 (4d) |
| Dec 17, 2021 | PSNL | ↓ Sell | 3,437 | $12.80 | $44K | Direct | Dec 20, 2021 (3d) |
| Dec 2, 2021 | PSNL | ↓ Sell | 4,184 | $12.92 | $54K | Direct | Dec 6, 2021 (4d) |
| Nov 17, 2021 | PSNL | ↓ Sell | 1,253 | $17.04 | $21K | Direct | Nov 19, 2021 (2d) |
| Sep 17, 2021 | PSNL | ↓ Sell | 3,152 | $21.25 | $67K | Direct | Sep 21, 2021 (4d) |
| Sep 2, 2021 | PSNL | ↓ Sell | 3,820 | $21.92 | $84K | Direct | Sep 7, 2021 (5d) |
| Jun 17, 2021 | PSNL | ↓ Sell | 2,421 | $22.75 | $55K | Direct | Jun 22, 2021 (5d) |
| Jun 2, 2021 | PSNL | ↓ Sell | 2,899 | $21.57 | $63K | Direct | Jun 4, 2021 (2d) |
| Mar 17, 2021 | PSNL | ↓ Sell | 2,446 | $26.73 | $65K | Direct | Mar 19, 2021 (2d) |
| Mar 2, 2021 | PSNL | ↓ Sell | 3,022 | $32.60 | $99K | Direct | Mar 4, 2021 (2d) |
| Dec 17, 2020 | PSNL | ↓ Sell | 2,391 | $36.37 | $87K | Direct | Dec 21, 2020 (4d) |
| Dec 2, 2020 | PSNL | ↓ Sell | 2,926 | $27.76 | $81K | Direct | Dec 3, 2020 (1d) |
| Sep 17, 2020 | PSNL | ↓ Sell | 2,463 | $22.74 | $56K | Direct | Sep 21, 2020 (4d) |
| Sep 2, 2020 | PSNL | ↓ Sell | 2,899 | $22.99 | $67K | Direct | Sep 4, 2020 (2d) |
| May 17, 2018 | LITE | ↓ Sell | 1,697 | $63.40 | $108K | Direct | May 17, 2018 (0d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other PSNL insiders
Open-market trades in the last 12 months
About Aaron Tachibana's insider trades
Aaron Tachibana is CFO and COO at Personalis (PSNL). Since Nov 20, 2008, Aaron has reported 1 open-market purchase worth $10K and 60 sales worth $5.3M on SEC Form 4. In the last 12 months: 7 sales ($2.9M).
1 sale (2% of the value sold) was made under a Rule 10b5-1 trading plan, which is set up months in advance and runs on a schedule, so it says little about how the insider sees the stock today.
Their filings also include grants and awards (28 filings), option exercises (27 filings), shares withheld for taxes (19 filings), shares returned to the company (5 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every PSNL insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.