Richard Chen is CSO at Personalis, Inc. (PSNL). They have made 52 open-market trades across 1 company since 2020, most recently 2026-09-18.
CIK 0001779787
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 52 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| PSNL | 169,882 | $2.7M |
Shares reported on the most recent Form 4, priced at the 2026-09-22 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| PSNL | SELL | 2026-09-18 | 2026-09-22 | $16.22 | $65K | +0.6% | — | — |
| PSNL | SELL · 10b5-1 | 2026-07-15 | 2026-07-15 | $15.15 | $1.5M | -23.1% | -9.9% | +1.5% |
| PSNL | SELL | 2025-07-28 | 2025-07-30 | $6.57 | $3K | -18.0% | -10.9% | +77.6% |
| PSNL | SELL | 2025-05-16 | 2025-05-20 | $4.95 | $5K | -1.0% | +31.6% | -0.6% |
| PSNL | SELL | 2025-01-28 | 2025-01-30 | $5.79 | $3K | -10.9% | -23.3% | -29.5% |
| PSNL | SELL | 2024-12-16 | 2024-12-18 | $3.82 | $18K | +51.7% | +28.3% | -5.8% |
| PSNL | SELL | 2024-11-18 | 2024-11-20 | $3.79 | $3K | +11.1% | +64.3% | +72.6% |
| PSNL | SELL | 2024-07-30 | 2024-08-01 | $2.97 | $2K | +40.4% | +57.2% | +56.3% |
| PSNL | SELL | 2024-06-17 | 2024-06-20 | $1.29 | $7K | -1.6% | +144.3% | +352.5% |
| PSNL | SELL | 2024-05-17 | 2024-05-21 | $1.38 | $1K | -1.4% | -16.3% | +297.3% |
| PSNL | SELL | 2024-01-29 | 2024-01-31 | $1.37 | $721 | -1.5% | +24.3% | +8.1% |
| PSNL | SELL | 2023-12-15 | 2023-12-19 | $1.47 | $7K | +34.2% | +6.6% | +7.2% |
| PSNL | SELL | 2023-11-16 | 2023-11-20 | $1.04 | $978 | +8.1% | +7.4% | -7.4% |
| PSNL | SELL | 2023-07-31 | 2023-08-02 | $2.26 | $1K | -12.9% | -14.7% | -55.7% |
| PSNL | SELL | 2023-06-16 | 2023-06-21 | $2.07 | $10K | -8.4% | +10.8% | -36.0% |
| PSNL | SELL | 2023-05-17 | 2023-05-19 | $1.98 | $2K | -11.9% | -5.0% | -19.3% |
| PSNL | SELL | 2023-03-17 | 2023-03-21 | $2.83 | $4K | -1.1% | -11.8% | -25.8% |
| PSNL | SELL | 2023-01-31 | 2023-02-02 | $2.20 | $1K | +11.0% | -6.1% | -21.7% |
| PSNL | SELL | 2022-12-20 | 2022-12-22 | $1.92 | $3K | +19.0% | +28.8% | +46.2% |
| PSNL | SELL | 2022-12-15 | 2022-12-19 | $2.50 | $18K | +3.1% | +27.1% | +39.6% |
| PSNL | SELL | 2022-12-02 | 2022-12-06 | $2.60 | $1K | -11.9% | -10.2% | +18.9% |
| PSNL | SELL | 2022-11-16 | 2022-11-18 | $2.71 | $4K | +19.2% | -14.4% | +53.3% |
| PSNL | SELL | 2022-09-20 | 2022-09-22 | $3.48 | $6K | +21.3% | -21.0% | -39.7% |
| PSNL | SELL | 2022-09-02 | 2022-09-08 | $3.33 | $1K | -1.5% | -14.2% | -28.3% |
| PSNL | SELL | 2022-07-28 | 2022-08-01 | $3.91 | $2K | +33.2% | -8.3% | -26.0% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.