PSNL · Insider Trading
Personalis, Inc. Common Stock
Every open-market purchase and sale reported by PSNL officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-22 | Christopher M Hall | Chief Executive Officer | Sell | −7,459 | −$120.98K |
| 2026-09-22 | Richard Chen | President and CMO | Sell | −3,998 | −$64.85K |
| 2026-09-22 | Aaron Tachibana | CFO AND COO | Sell | −2,931 | −$47.54K |
| 2026-09-22 | Stephen Michael Moore | SVP and Chief Legal Officer | Sell | −2,068 | −$33.54K |
| 2026-07-15 | Richard Chen | President and CMO | MIXED | — | −$1.27M |
| 2026-07-09 | Christopher M Hall | Chief Executive Officer | MIXED | — | −$1.35M |
| 2026-06-29 | Aaron Tachibana | CFO AND COO | MIXED | — | −$43.24K |
| 2026-06-26 | Christopher M Hall | Chief Executive Officer | MIXED | — | −$1.15M |
| 2026-06-26 | Aaron Tachibana | CFO AND COO | MIXED | — | −$292.12K |
| 2026-06-11 | Karin Eastham | Director | A | +6,250 | — |
| 2026-06-05 | Aaron Tachibana | CFO AND COO | MIXED | — | −$114.00K |
| 2026-05-29 | Christopher M Hall | Chief Executive Officer | MIXED | — | −$941.00K |
| 2026-05-29 | Aaron Tachibana | CFO AND COO | MIXED | — | −$93.89K |
| 2026-05-14 | Lonnie Shoff | Director | A | +6,250 | — |
| 2026-05-14 | A Blaine Bowman | Director | A | +6,250 | — |
| 2026-05-14 | Woodrow A Myers Jr | Director | A | +6,250 | — |
| 2026-05-14 | Olivia Kyusuk Bloom | Director | A | +6,250 | — |
| 2026-05-14 | Karin Eastham | Director | A | +6,250 | — |
| 2026-05-14 | Kenneth J Widder | Director | A | +6,250 | — |
| 2026-03-17 | Stephen Michael Moore | SVP and Chief Legal Officer | A | +28,125 | — |
| 2026-03-17 | Christopher M Hall | Chief Executive Officer | A | +87,500 | — |
| 2026-03-17 | Aaron Tachibana | CFO AND COO | A | +34,375 | — |
| 2026-03-17 | Richard Chen | President and CMO | A | +46,875 | — |
| 2026-02-25 | Aaron Tachibana | CFO AND COO | A | +15,000 deriv. | — |
| 2026-02-25 | Stephen Michael Moore | SVP and Chief Legal Officer | A | +8,333 deriv. | — |
| 2026-02-25 | Richard Chen | CHIEF MEDICAL OFFICER AND EVP | A | +15,000 deriv. | — |
| 2026-02-25 | Christopher M Hall | PRESIDENT AND CEO | A | +33,333 deriv. | — |
| 2026-02-13 | Tempus AI, Inc. | 10%+ Owner | Buy | +320,267 | +$2.74M |
| 2026-01-23 | Aaron Tachibana | CFO AND COO | MIXED | — | −$2.81K |
| 2025-11-28 | Aaron Tachibana | CFO AND COO | MIXED | — | −$167.94K |
| 2025-11-05 | Christopher M Hall | PRESIDENT AND CEO | Sell | −29,612 | −$266.21K |
| 2025-07-30 | Aaron Tachibana | CFO AND COO | Sell | −641 | −$4.21K |
| 2025-07-30 | Richard Chen | CHIEF MEDICAL OFFICER AND EVP | Sell | −452 | −$2.97K |
| 2025-05-20 | Olivia Kyusuk Bloom | Director | A | +50,000 deriv. | — |
| 2025-05-20 | Aaron Tachibana | CFO AND COO | Sell | −1,291 | −$6.39K |
| 2025-05-20 | Woodrow A Myers Jr | Director | A | +50,000 deriv. | — |
| 2025-05-20 | Lonnie Shoff | Director | A | +50,000 deriv. | — |
| 2025-05-20 | A Blaine Bowman | Director | A | +50,000 deriv. | — |
| 2025-05-20 | Kenneth J Widder | Director | A | +50,000 deriv. | — |
| 2025-05-20 | Stephen Michael Moore | SVP and Chief Legal Officer | Sell | −1,675 | −$8.29K |
| 2025-05-20 | Richard Chen | CHIEF MEDICAL OFFICER AND EVP | Sell | −910 | −$4.50K |
| 2025-05-20 | Karin Eastham | Director | A | +50,000 deriv. | — |
| 2025-03-18 | Aaron Tachibana | CFO AND COO | A | +250,000 deriv. | — |
| 2025-03-18 | Richard Chen | CHIEF MEDICAL OFFICER AND EVP | A | +250,000 deriv. | — |
| 2025-03-18 | Christopher M Hall | PRESIDENT AND CEO | A | +680,000 deriv. | — |
| 2025-03-18 | Stephen Michael Moore | SVP and Chief Legal Officer | A | +225,000 deriv. | — |
| 2025-01-30 | Aaron Tachibana | CFO AND COO | Sell | −708 | −$4.10K |
| 2025-01-30 | Richard Chen | CHIEF MEDICAL OFFICER AND EVP | Sell | −519 | −$3.01K |
| 2024-12-18 | Aaron Tachibana | CFO AND COO | Sell | −6,865 | −$26.22K |
| 2024-12-18 | Stephen Michael Moore | SVP and Chief Legal Officer | Sell | −1,513 | −$5.78K |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| Tempus AI, Inc. | 10%+ Owner | 12,843,022 | $204.20M |
| Christopher M Hall | Chief Executive Officer | 228,527 | $3.63M |
| Aaron Tachibana | CFO AND COO | 195,902 | $3.11M |
| Richard Chen | President and CMO | 169,882 | $2.70M |
| Stephen Michael Moore | SVP and Chief Legal Officer | 90,257 | $1.44M |
| Lonnie Shoff | Director | 37,190 | $591.32K |
| Woodrow A Myers Jr | Director | 32,366 | $514.62K |
| Olivia Kyusuk Bloom | Director | 27,265 | $433.51K |
| A Blaine Bowman | Director | 19,756 | $314.12K |
| Karin Eastham | Director | 19,756 | $314.12K |
| Kenneth J Widder | Director | 6,250 | $99.38K |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the PSNL quote page; the site-wide leaderboard is on the insider transactions hub.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.