Personalis, Inc. (PSNL) · Insider trading
What Personalis's directors, officers and largest holders bought and sold themselves, from the Form 4 each of them files with the SEC within two business days of a trade. Open-market purchases and sales first: those are the trades somebody chose to make at the market price.
Bought, 12 months
$2.74M
1 insider, 12 trades
Sold, 12 months
$8.78M
4 insiders, 94% under a plan
Net, 12 months
−$6.04M
bought less sold
Latest filing
2026-09-22
filings read to 2026-10-19
Who traded, two years
| Insider | Bought | Sold | Trades | Last trade | Holds after |
|---|---|---|---|---|---|
| Hall Christopher MDirector, Chief Executive Officer | – | $4.45M | 7 | 2026-09-18 | 228,527 |
| Tachibana AaronCFO AND COO | – | $2.90M | 12 | 2026-09-18 | 195,902 |
| Tempus Ai, Inc.10% owner | $2.74M | – | 12 | 2025-12-22 | 13,039,067 |
| Chen RichardPresident and CMO | – | $1.61M | 7 | 2026-09-18 | 169,882 |
| Moore Stephen MichaelSVP and Chief Legal Officer | – | $54,030 | 4 | 2026-09-18 | 90,257 |
Open-market purchases and sales
Newest first. “Plan” marks a trade made under a 10b5-1 plan set up in advance.
| Date | Insider | Trade | Shares | Price | Value | Holds after | Filing |
|---|---|---|---|---|---|---|---|
| 2026-09-18 | Tachibana AaronCFO AND COO | Sale | 2,931 | 16.22 | $47,541 | 195,902 | Form 4 |
| 2026-09-18 | Hall Christopher MDirector, Chief Executive Officer | Sale | 7,459 | 16.22 | $120,985 | 228,527 | Form 4 |
| 2026-09-18 | Chen RichardPresident and CMO | Sale | 3,998 | 16.22 | $64,848 | 169,882 | Form 4 |
| 2026-09-18 | Moore Stephen MichaelSVP and Chief Legal Officer | Sale | 2,068 | 16.22 | $33,543 | 90,257 | Form 4 |
| 2026-07-15 | Chen RichardPresident and CMO | Saleplan | 100,000 | 15.15 | $1.51M | 173,880 | Form 4 |
| 2026-07-09 | Hall Christopher MDirector, Chief Executive Officer | Saleplan | 100,000 | 15.08 | $1.51M | 235,986 | Form 4 |
| 2026-06-29 | Tachibana AaronCFO AND COO | Saleplan | 4,982 | 14.00 | $69,748 | 198,833 | Form 4 |
| 2026-06-26 | Tachibana AaronCFO AND COO | Saleplan | 51,251 | 13.18 | $675,488 | 198,833 | Form 4 |
| 2026-06-26 | Hall Christopher MDirector, Chief Executive Officer | Saleplan | 100,000 | 13.15 | $1.31M | 235,986 | Form 4 |
| 2026-06-04 | Tachibana AaronCFO AND COO | Saleplan | 40,000 | 12.01 | $480,400 | 198,833 | Form 4 |
| 2026-05-29 | Tachibana AaronCFO AND COO | Saleplan | 38,799 | 11.58 | $449,292 | 198,833 | Form 4 |
| 2026-05-29 | Hall Christopher MDirector, Chief Executive Officer | Saleplan | 80,091 | 11.02 | $882,603 | 235,986 | Form 4 |
| 2026-05-28 | Hall Christopher MDirector, Chief Executive Officer | Saleplan | 19,909 | 11.02 | $219,397 | 235,986 | Form 4 |
| 2026-01-22 | Tachibana AaronCFO AND COO | Saleplan | 1,201 | 11.50 | $13,812 | 164,458 | Form 4 |
| 2025-12-22 | Tempus Ai, Inc.10% owner | Buy | 28,000 | 8.93 | $250,040 | 13,039,067 | Form 4 |
| 2025-12-19 | Tempus Ai, Inc.10% owner | Buy | 29,641 | 8.39 | $248,688 | 13,011,067 | Form 4 |
| 2025-12-18 | Tempus Ai, Inc.10% owner | Buy | 31,430 | 7.91 | $248,611 | 12,981,426 | Form 4 |
| 2025-12-17 | Tempus Ai, Inc.10% owner | Buy | 31,650 | 7.86 | $248,769 | 12,949,996 | Form 4 |
| 2025-11-25 | Tempus Ai, Inc.10% owner | Buy | 9,712 | 10.08 | $97,897 | 12,904,458 | Form 4 |
| 2025-11-25 | Tempus Ai, Inc.10% owner | Buy | 13,888 | 11.00 | $152,768 | 12,918,346 | Form 4 |
| 2025-11-25 | Tachibana AaronCFO AND COO | Saleplan | 103,668 | 10.78 | $1.12M | 164,458 | Form 4 |
| 2025-11-24 | Tempus Ai, Inc.10% owner | Buy | 25,225 | 9.87 | $248,971 | 12,894,746 | Form 4 |
| 2025-11-21 | Tempus Ai, Inc.10% owner | Buy | 9,900 | 8.84 | $87,516 | 12,852,922 | Form 4 |
| 2025-11-21 | Tempus Ai, Inc.10% owner | Buy | 16,599 | 9.74 | $161,674 | 12,869,521 | Form 4 |
| 2025-11-20 | Tempus Ai, Inc.10% owner | Buy | 28,827 | 8.63 | $248,777 | 12,843,022 | Form 4 |
| 2025-11-19 | Tempus Ai, Inc.10% owner | Buy | 30,645 | 8.12 | $248,837 | 12,814,195 | Form 4 |
| 2025-11-18 | Tempus Ai, Inc.10% owner | Buy | 64,750 | 7.67 | $496,632 | 12,783,550 | Form 4 |
| 2025-11-03 | Hall Christopher MDirector, PRESIDENT AND CEO | Sale | 29,612 | 8.99 | $266,212 | 148,486 | Form 4 |
| 2025-07-28 | Tachibana AaronCFO AND COO | Sale | 641 | 6.57 | $4,211 | 164,458 | Form 4 |
| 2025-07-28 | Chen RichardCHIEF MEDICAL OFFICER AND EVP | Sale | 452 | 6.57 | $2,970 | 124,505 | Form 4 |
| 2025-05-16 | Chen RichardCHIEF MEDICAL OFFICER AND EVP | Sale | 910 | 4.95 | $4,504 | 124,957 | Form 4 |
| 2025-05-16 | Moore Stephen MichaelSVP and Chief Legal Officer | Sale | 1,675 | 4.95 | $8,291 | 64,200 | Form 4 |
| 2025-05-16 | Tachibana AaronCFO AND COO | Sale | 1,291 | 4.95 | $6,390 | 165,099 | Form 4 |
| 2025-01-28 | Chen RichardCHIEF MEDICAL OFFICER AND EVP | Sale | 519 | 5.79 | $3,005 | 123,367 | Form 4 |
| 2025-01-28 | Tachibana AaronCFO AND COO | Sale | 708 | 5.79 | $4,099 | 166,390 | Form 4 |
| 2024-12-16 | Tachibana AaronCFO AND COO | Sale | 6,865 | 3.82 | $26,224 | 167,098 | Form 4 |
| 2024-12-16 | Moore Stephen MichaelSVP and Chief Legal Officer | Sale | 1,513 | 3.82 | $5,780 | 65,875 | Form 4 |
| 2024-12-16 | Chen RichardCHIEF MEDICAL OFFICER AND EVP | Sale | 4,834 | 3.82 | $18,466 | 123,886 | Form 4 |
| 2024-11-18 | Chen RichardCHIEF MEDICAL OFFICER AND EVP | Sale | 921 | 3.79 | $3,491 | 128,720 | Form 4 |
| 2024-11-18 | Moore Stephen MichaelSVP and Chief Legal Officer | Sale | 1,693 | 3.79 | $6,416 | 67,388 | Form 4 |
Grants, exercises and other transactions
Pay, tax and paperwork rather than a choice to trade at the market price. Two years.
12 × option exercise10 × grant or award
Show them
| Date | Insider | What | Shares | Price | Holds after | Filing |
|---|---|---|---|---|---|---|
| 2026-07-15 | Chen RichardPresident and CMO | Option exercise M | +100,000 | 2.44 | 273,880 | Form 4 |
| 2026-07-09 | Hall Christopher MDirector, Chief Executive Officer | Option exercise M | +100,000 | 1.61 | 335,986 | Form 4 |
| 2026-06-29 | Tachibana AaronCFO AND COO | Option exercise M | +4,982 | 5.32 | 203,815 | Form 4 |
| 2026-06-26 | Tachibana AaronCFO AND COO | Option exercise M | +28,832 | 9.16 | 227,665 | Form 4 |
| 2026-06-26 | Tachibana AaronCFO AND COO | Option exercise M | +22,419 | 5.32 | 250,084 | Form 4 |
| 2026-06-26 | Hall Christopher MDirector, Chief Executive Officer | Option exercise M | +100,000 | 1.61 | 335,986 | Form 4 |
| 2026-06-04 | Tachibana AaronCFO AND COO | Option exercise M | +40,000 | 9.16 | 238,833 | Form 4 |
| 2026-05-29 | Tachibana AaronCFO AND COO | Option exercise M | +38,799 | 9.16 | 237,632 | Form 4 |
| 2026-05-29 | Hall Christopher MDirector, Chief Executive Officer | Option exercise M | +80,091 | 1.61 | 316,077 | Form 4 |
| 2026-05-28 | Hall Christopher MDirector, Chief Executive Officer | Option exercise M | +19,909 | 1.61 | 255,895 | Form 4 |
| 2026-05-12 | Eastham KarinDirector | Grant or award A | +6,250 | – | 19,756 | Form 4/A |
| 2026-05-12 | Bowman A BlaineDirector | Grant or award A | +6,250 | – | 19,756 | Form 4 |
| 2026-05-12 | Widder Kenneth JDirector | Grant or award A | +6,250 | – | 6,250 | Form 4 |
| 2026-05-12 | Myers Woodrow A JrDirector | Grant or award A | +6,250 | – | 32,366 | Form 4 |
| 2026-05-12 | Shoff LonnieDirector | Grant or award A | +6,250 | – | 37,190 | Form 4 |
| 2026-05-12 | Bloom Olivia KyusukDirector | Grant or award A | +6,250 | – | 27,265 | Form 4 |
| 2026-03-15 | Tachibana AaronCFO AND COO | Grant or award A | +34,375 | – | 198,833 | Form 4 |
| 2026-03-15 | Hall Christopher MDirector, Chief Executive Officer | Grant or award A | +87,500 | – | 235,986 | Form 4 |
| 2026-03-15 | Chen RichardPresident and CMO | Grant or award A | +46,875 | – | 173,880 | Form 4 |
| 2026-03-15 | Moore Stephen MichaelSVP and Chief Legal Officer | Grant or award A | +28,125 | – | 92,325 | Form 4 |
| 2026-01-22 | Tachibana AaronCFO AND COO | Option exercise M | +1,201 | 9.16 | 165,659 | Form 4 |
| 2025-11-25 | Tachibana AaronCFO AND COO | Option exercise M | +103,668 | 9.16 | 268,126 | Form 4 |
How to read it
- Buy, sale
- Code P and S on the form: shares bought or sold in the market, at the market price. The other codes are mostly pay (a grant, an option exercised) or tax (shares the company withheld), and say little about what the insider thinks of the price.
- Plan
- A sale or purchase under a Rule 10b5-1 plan, set up in advance and running on its own schedule. Since April 2023 the form has a box for it. Much executive selling is planned and says more about diversifying than about the company.
- Holds after
- The shares the insider still held after the trade, in the form the trade was in (directly, or indirectly through a trust or a fund).
- Value
- Shares times the price the form reports, which is often an average over several fills on the day.
Read from the SEC's own quarterly data sets of Forms 3, 4 and 5, and from each day's filings since the last one. A correcting amendment replaces the lines it restates. Every row links to its filing. None of this is advice: insiders sell for many reasons, and buy for fewer.