🕵️ Personalis Inc ($PSNL)
SEC insider & ownership activity, last 12 months · CIK 1527753 · every row links its SEC filing
Over the last 12 months insiders sold $8.5M against $2.7M of open-market buying. Chris Hall sold $4.2M through a 10b5-1 trading plan in 5 lots (Nov–Jul). 1 planned sale is pending, the largest $645K (Aaron Tachibana). No red-flag 8-Ks in the window.
Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
1 buyer, $2.7M (12 lots) · 3 sellers, $8.5M (14 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Chris Hall | 0 | – | 5 | $4.2M | Jul 9, 2026 |
| Aaron Tachibana | 0 | – | 7 | $2.8M | Jun 29, 2026 |
| Tempus AI, Inc. | 12 | $2.7M | 0 | – | Dec 22, 2025 |
| Chen Richard | 0 | – | 2 | $1.5M | Jul 15, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Merck & Co., Inc. | 16.5% | 13G | Dec 23, 2024 | filing ↗ | |
| Merck Sharp & Dohme LLC | 16.5% | 13G | Dec 23, 2024 | filing ↗ | |
| Eric Lefkofsky | 12.6% | 13D | Jul 19, 2026 | filing ↗ | |
| Tempus AI, Inc. | 12.5% | 13D | Jul 19, 2026 | filing ↗ | |
| ARK Investment Management LLC | 9.6% | 13G | Feb 14, 2025 | filing ↗ | |
| ARK Investment Management LLC | 8.1% | 13G | May 14, 2025 | filing ↗ | |
| Catherine D. Wood | 8.1% | 13G | May 14, 2025 | filing ↗ | |
| Ameriprise Financial, Inc. | 7.1% | 13G | Feb 17, 2026 | filing ↗ | |
| Blackrock, Inc. | 5.9% | 13G | Jul 29, 2026 | filing ↗ | |
| DEEP Track Capital, LP | 5.5% | 13G | May 12, 2026 | filing ↗ | |
| DEEP Track Biotechnology Master Fund, Ltd. | 5.5% | 13G | May 12, 2026 | filing ↗ | |
| David Kroin | 5.5% | 13G | May 12, 2026 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Richard Chen | $1.5M | Jul 15, 2026 | filing ↗ |
| Chris Hall | $1.4M | Jul 9, 2026 | filing ↗ |
| Aaron Tachibana | $65K | Jun 29, 2026 | filing ↗ |
| Aaron Tachibana | $645K | Jun 26, 2026 | filing ↗ |
| Chris Hall | $1.3M | Jun 26, 2026 | filing ↗ |
| Aaron Tachibana | $431K | Jun 4, 2026 | filing ↗ |
| Aaron Tachibana | $426K | May 29, 2026 | filing ↗ |
| Christopher Hall | $949K | May 28, 2026 | filing ↗ |
| Aaron L Tachibana | $386K | Jan 22, 2026 | filing ↗ |
| Aaron L Tachibana | $1.0M | Nov 25, 2025 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Material agreement (1.01) | Jul 20, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 20, 2026 | filing ↗ |
| Earnings (2.02) | Jul 20, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Jul 20, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 20, 2026 | filing ↗ |
| Other events (8.01) | May 19, 2026 | filing ↗ |
| Shareholder vote (5.07) | May 12, 2026 | filing ↗ |
| Other events (8.01) | May 12, 2026 | filing ↗ |
| Earnings (2.02) | May 7, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 7, 2026 | filing ↗ |
| Officer/director changes (5.02) | Mar 13, 2026 | filing ↗ |
| Earnings (2.02) | Feb 26, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 26, 2026 | filing ↗ |
| Earnings (2.02) | Jan 8, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jan 8, 2026 | filing ↗ |
| Other events (8.01) | Nov 28, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Nov 28, 2025 | filing ↗ |
| Other events (8.01) | Nov 24, 2025 | filing ↗ |
| Other events (8.01) | Nov 7, 2025 | filing ↗ |
| Earnings (2.02) | Nov 4, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Nov 4, 2025 | filing ↗ |
| Other events (8.01) | Aug 19, 2025 | filing ↗ |
| Earnings (2.02) | Aug 5, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 5, 2025 | filing ↗ |