PSNL Personalis, Inc.
Personalis, Inc. (PSNL) Insider Activity
What the officers, directors and large holders did with their own shares. Only open-market purchases and sales count toward the totals — grants, option exercises and shares withheld for tax are compensation mechanics, not decisions, and they're listed separately below.
How much of that selling was preplanned? 100% planned / 0% discretionary
Largest single sale: $1.5M.
Where they traded
Last open-market purchase: December 22, 2025 , by Tempus AI, Inc. .
Recent open-market activity
| Date | Insider | Role | Action | Shares | Price | Value | Held after |
|---|---|---|---|---|---|---|---|
| Chen Richard | President and CMO | Sell 10b5-1 | 100,000 | $15.15 | $1.5M | 173,880 −36.5% of holding | |
| Hall Christopher M | Chief Executive Officer | Sell 10b5-1 | 100,000 | $15.08 | $1.5M | 235,986 −29.8% of holding | |
| Tachibana Aaron | CFO AND COO | Sell 10b5-1 | 4,982 | $14.00 | $69.7K | 198,833 −2.4% of holding | |
| Hall Christopher M | Chief Executive Officer | Sell 10b5-1 | 100,000 | $13.15 | $1.3M | 235,986 −29.8% of holding | |
| Tachibana Aaron | CFO AND COO | Sell 10b5-1 | 51,251 | $13.18 | $675.5K | 198,833 −20.5% of holding |
Form 4s are due within two business days of a transaction, so this is close to real time — unlike the quarterly 13F data on the Institutional tab. A single large sale often reflects a prearranged 10b5-1 plan rather than a fresh view, so read a pattern of sales rather than any one of them.