Personalis, Inc. — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| Tachibana Aaron | CFO AND COO | Option Exercise | 103,668 | $9.16 | $949,599 | 268,126 | Nov 25, 2025 |
| Hall Christopher M | PRESIDENT AND CEO | Sale | 29,612 | $8.99 | $266,212 | 148,486 | Nov 3, 2025 |
| Chen Richard | CHIEF MEDICAL OFFICER AND EVP | Sale | 452 | $6.57 | $2,970 | 124,505 | Jul 28, 2025 |
| Tachibana Aaron | CFO AND COO | Sale | 641 | $6.57 | $4,211 | 164,458 | Jul 28, 2025 |
| Tachibana Aaron | CFO AND COO | Sale | 1,291 | $4.95 | $6,390 | 165,099 | May 16, 2025 |
| Moore Stephen Michael | SVP and Chief Legal Officer | Sale | 1,675 | $4.95 | $8,291 | 64,200 | May 16, 2025 |
| Chen Richard | CHIEF MEDICAL OFFICER AND EVP | Sale | 910 | $4.95 | $4,505 | 124,957 | May 16, 2025 |
| Tachibana Aaron | CFO AND COO | Sale | 708 | $5.79 | $4,099 | 166,390 | Jan 28, 2025 |
| Chen Richard | CHIEF MEDICAL OFFICER AND EVP | Sale | 519 | $5.79 | $3,005 | 123,367 | Jan 28, 2025 |
| Chen Richard | CHIEF MEDICAL OFFICER AND EVP | Sale | 4,834 | $3.82 | $18,466 | 123,886 | Dec 16, 2024 |
| Moore Stephen Michael | SVP and Chief Legal Officer | Sale | 1,513 | $3.82 | $5,780 | 65,875 | Dec 16, 2024 |
| Tachibana Aaron | CFO AND COO | Sale | 6,865 | $3.82 | $26,224 | 167,098 | Dec 16, 2024 |
| Tachibana Aaron | CFO AND COO | Sale | 1,307 | $3.79 | $4,954 | 173,963 | Nov 18, 2024 |
| Moore Stephen Michael | SVP and Chief Legal Officer | Sale | 1,693 | $3.79 | $6,416 | 67,388 | Nov 18, 2024 |
| Chen Richard | CHIEF MEDICAL OFFICER AND EVP | Sale | 921 | $3.79 | $3,491 | 128,720 | Nov 18, 2024 |
| Hall Christopher M | PRESIDENT AND CEO | Sale | 26,443 | $5.38 | $142,263 | 178,098 | Nov 1, 2024 |
| Tempus AI, Inc. | — | X | 4,609,400 | $1.50 | $6,914,100 | 4,609,400 | Aug 16, 2024 |
| Chen Richard | CHIEF MEDICAL OFFICER AND EVP | Sale | 524 | $2.97 | $1,556 | 127,227 | Jul 30, 2024 |
| Tachibana Aaron | CFO AND COO | Sale | 742 | $2.97 | $2,204 | 175,270 | Jul 30, 2024 |
| Chen Richard | CHIEF MEDICAL OFFICER AND EVP | Sale | 5,055 | $1.29 | $6,521 | 127,751 | Jun 17, 2024 |
| Tachibana Aaron | CFO AND COO | Sale | 7,176 | $1.29 | $9,257 | 176,012 | Jun 17, 2024 |
| Moore Stephen Michael | SVP and Chief Legal Officer | Sale | 1,585 | $1.29 | $2,045 | 69,081 | Jun 17, 2024 |
| Chen Richard | CHIEF MEDICAL OFFICER AND EVP | Sale | 940 | $1.38 | $1,297 | 132,806 | May 17, 2024 |
| Tachibana Aaron | CFO AND COO | Sale | 1,333 | $1.38 | $1,840 | 183,188 | May 17, 2024 |
| Moore Stephen Michael | SVP and Chief Legal Officer | Sale | 1,731 | $1.38 | $2,389 | 70,666 | May 17, 2024 |
| Moore Stephen Michael | SVP and Chief Legal Officer | Sale | 4,523 | $1.37 | $6,197 | 72,397 | Apr 30, 2024 |
| MYERS WOODROW A JR | — | Purchase | 10,000 | $1.67 | $16,700 | 26,116 | Mar 1, 2024 |
| Chen Richard | CHIEF MEDICAL OFFICER AND EVP | Sale | 526 | $1.37 | $721 | 128,870 | Jan 29, 2024 |
| Tachibana Aaron | CFO AND COO | Sale | 716 | $1.37 | $981 | 184,521 | Jan 29, 2024 |
| Chen Richard | Chief Medical Officer and EVP | Sale | 4,708 | $1.47 | $6,921 | 129,396 | Dec 15, 2023 |
| Tachibana Aaron | CFO and COO | Sale | 6,747 | $1.47 | $9,918 | 185,237 | Dec 15, 2023 |
| Moore Stephen Michael | General Counsel | Sale | 1,476 | $1.47 | $2,170 | 76,920 | Dec 15, 2023 |
| Tachibana Aaron | CFO and COO | Sale | 1,344 | $1.04 | $1,398 | 191,984 | Nov 16, 2023 |
| Chen Richard | Chief Medical Officer and EVP | Sale | 940 | $1.04 | $978 | 124,104 | Nov 16, 2023 |
| Moore Stephen Michael | General Counsel | Sale | 1,722 | $1.04 | $1,791 | 78,396 | Nov 16, 2023 |
| Hall Christopher M | President and CEO | Sale | 20,459 | $0.93 | $19,027 | 204,541 | Nov 1, 2023 |
| Tachibana Aaron | CFO and COO | Sale | 662 | $2.26 | $1,496 | 193,328 | Jul 31, 2023 |
| Chen Richard | Chief Medical Officer and EVP | Sale | 485 | $2.26 | $1,096 | 125,044 | Jul 31, 2023 |
| Moore Stephen Michael | General Counsel | Sale | 1,509 | $2.07 | $3,124 | 80,118 | Jun 16, 2023 |
| Chen Richard | Chief Medical Officer and EVP | Sale | 4,817 | $2.07 | $9,971 | 125,529 | Jun 16, 2023 |
| Tachibana Aaron | CFO and COO | Sale | 6,904 | $2.07 | $14,291 | 193,990 | Jun 16, 2023 |
| Tachibana Aaron | CFO and COO | Sale | 1,389 | $1.98 | $2,750 | 200,894 | May 17, 2023 |
| Moore Stephen Michael | General Counsel | Sale | 1,781 | $1.98 | $3,526 | 81,627 | May 17, 2023 |
| Chen Richard | Chief Medical Officer and EVP | Sale | 971 | $1.98 | $1,923 | 130,346 | May 17, 2023 |
| Moore Stephen Michael | General Counsel | Sale | 5,102 | $2.29 | $11,684 | 83,408 | May 2, 2023 |
| Tachibana Aaron | CFO and COO | Sale | 3,945 | $2.83 | $11,164 | 202,283 | Mar 17, 2023 |
| Chen Richard | Chief Medical Officer and EVP | Sale | 1,314 | $2.83 | $3,719 | 131,317 | Mar 17, 2023 |
| Tachibana Aaron | Chief Financial Officer | Sale | 767 | $2.20 | $1,687 | 206,228 | Jan 31, 2023 |
| Chen Richard | Chief Medical Officer | Sale | 562 | $2.20 | $1,236 | 132,631 | Jan 31, 2023 |
| Tachibana Aaron | Chief Financial Officer | Sale | 3,843 | $1.92 | $7,379 | 206,995 | Dec 20, 2022 |