As of June 06, 2026, Personalis's top three insider holders are Ai, Inc. Tempus (TenPercentOwner, 12.72Mn shares), Venture Partners Select Iv, L.P. Lightspeed (Other, 2.09Mn shares), John Stephen West (President And Ceo, 622.44K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| A Blaine Bowman | - | 13,506 | 0 | 19 May, 2022 |
| Karin Eastham | - | 13,506 | 0 | 19 May, 2022 |
| Woodrow A Jr Myers | - | 26,116 | 0 | 05 Mar, 2024 |
| Ken Ludlum | - | 43,506 | 0 | 19 May, 2022 |
| Alan Colowick | - | 13,506 | 0 | 19 May, 2022 |
| Aaron Tachibana | Cfo And Coo | 198,833 | 0 | 17 Mar, 2026 |
| Christopher M Hall | Chief Executive Officer | 235,986 | 0 | 17 Mar, 2026 |
| Lonnie Shoff | - | 30,940 | 0 | 04 Aug, 2022 |
| Olivia Kyusuk Bloom | - | 21,015 | 0 | 19 May, 2022 |
| Ai, Inc. Tempus | - | 12,718,800 | 0 | 20 Aug, 2024 |
| Richard Chen | President And Cmo | 173,880 | 0 | 17 Mar, 2026 |
| John Stephen West | President And Ceo | 622,444 | 0 | 14 Dec, 2022 |
| Venture Partners Select Iv, L.P. Lightspeed | - | 4,750 | 2,084,240 | 04 Mar, 2022 |
| Stephen Michael Moore | Svp And Chief Legal Officer | 92,325 | 0 | 17 Mar, 2026 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 15 Mar, 2026 | Christopher M Hall | Common Stock | A | 87,500 | $0.00 | 235,986 | D | A |
| 15 Mar, 2026 | Aaron Tachibana | Common Stock | A | 34,375 | $0.00 | 198,833 | D | A |
| 15 Mar, 2026 | Aaron Tachibana | Common Stock | A | 34,375 | $0.00 | 198,833 | D | A |
| 15 Mar, 2026 | Stephen Michael Moore | Common Stock | A | 28,125 | $0.00 | 92,325 | D | A |
| 15 Mar, 2026 | Richard Chen | Common Stock | A | 46,875 | $0.00 | 173,880 | D | A |
| 15 Mar, 2026 | Aaron Tachibana | Stock Option (right to buy) | A | 206,250 | $0.00 | 206,250 | D | A |
| 15 Mar, 2026 | Christopher M Hall | Stock Option (right to buy) | A | 525,000 | $0.00 | 525,000 | D | A |
| 15 Mar, 2026 | Stephen Michael Moore | Stock Option (right to buy) | A | 168,750 | $0.00 | 168,750 | D | A |
| 15 Mar, 2026 | Aaron Tachibana | Stock Option (right to buy) | A | 206,250 | $0.00 | 206,250 | D | A |
| 15 Mar, 2026 | Richard Chen | Stock Option (right to buy) | A | 281,250 | $0.00 | 281,250 | D | A |
| 23 Feb, 2026 | Stephen Michael Moore | Stock Option (right to buy) | A | 8,333 | $0.00 | 8,333 | D | A |
| 23 Feb, 2026 | Aaron Tachibana | Stock Option (right to buy) | A | 15,000 | $0.00 | 15,000 | D | A |
| 23 Feb, 2026 | Aaron Tachibana | Stock Option (right to buy) | A | 15,000 | $0.00 | 15,000 | D | A |
| 23 Feb, 2026 | Richard Chen | Stock Option (right to buy) | A | 15,000 | $0.00 | 15,000 | D | A |
| 23 Feb, 2026 | Christopher M Hall | Stock Option (right to buy) | A | 33,333 | $0.00 | 33,333 | D | A |
| 22 Jan, 2026 | Aaron Tachibana | Common Stock | A | 1,201 | $9.16 | 165,659 | D | M |
| 22 Jan, 2026 | Aaron Tachibana | Common Stock | A | 1,201 | $9.16 | 165,659 | D | M |
| 22 Jan, 2026 | Aaron Tachibana | Common Stock | D | 1,201 | $11.50 | 164,458 | D | S |
| 22 Jan, 2026 | Aaron Tachibana | Common Stock | D | 1,201 | $11.50 | 164,458 | D | S |
| 22 Jan, 2026 | Aaron Tachibana | Stock Option (right to buy) | D | 1,201 | $0.00 | 107,631 | D | M |