Personalis, Inc. (PSNL) Insider Ownership

Historic Insider Ownership Trends

PSNL's three largest insider shareholders as of April 22, 2026 are Ai, Inc. Tempus (TenPercentOwner, 12.72Mn shares), Venture Partners Select Iv, L.P. Lightspeed (Other, 2.09Mn shares), Venture Partners Select Iv, L.P. Lightspeed (Other, 2.09Mn shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares (Direct) Shares (Indirect) Report Date
Ai, Inc. Tempus - 12,718,800 0 20 Aug, 2024
Venture Partners Select Iv, L.P. Lightspeed - 4,750 2,084,240 04 Mar, 2022
Venture Partners Select Iv, L.P. Lightspeed - 4,750 2,084,240 04 Mar, 2022
Venture Partners Select Iv, L.P. Lightspeed - 4,750 2,084,240 04 Mar, 2022
Venture Partners Select Iv, L.P. Lightspeed - 4,750 2,084,240 04 Mar, 2022
Venture Partners Select Iv, L.P. Lightspeed - 4,750 2,084,240 04 Mar, 2022
John Stephen West President And Ceo 622,444 0 14 Dec, 2022
Christopher M Hall Chief Executive Officer 235,986 0 17 Mar, 2026
Aaron Tachibana Cfo And Coo 198,833 0 17 Mar, 2026
Richard Chen President And Cmo 173,880 0 17 Mar, 2026
Stephen Michael Moore Svp And Chief Legal Officer 92,325 0 17 Mar, 2026
Ken Ludlum - 43,506 0 19 May, 2022
Lonnie Shoff - 30,940 0 04 Aug, 2022
Woodrow A Jr Myers - 26,116 0 05 Mar, 2024
Olivia Kyusuk Bloom - 21,015 0 19 May, 2022
Karin Eastham - 13,506 0 19 May, 2022
Alan Colowick - 13,506 0 19 May, 2022
A Blaine Bowman - 13,506 0 19 May, 2022

* 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.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
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 Richard Chen Common Stock A 46,875 $0.00 173,880 D A
15 Mar, 2026 Stephen Michael Moore Common Stock A 28,125 $0.00 92,325 D A
15 Mar, 2026 Aaron Tachibana Common Stock A 34,375 $0.00 198,833 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 Richard Chen Stock Option (right to buy) A 281,250 $0.00 281,250 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 Aaron Tachibana Stock Option (right to buy) A 206,250 $0.00 206,250 D A
23 Feb, 2026 Aaron Tachibana 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
23 Feb, 2026 Stephen Michael Moore Stock Option (right to buy) A 8,333 $0.00 8,333 D A
23 Feb, 2026 Richard Chen Stock Option (right to buy) A 15,000 $0.00 15,000 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 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
25 Nov, 2025 Aaron Tachibana Common Stock A 103,668 $9.16 268,126 D M
25 Nov, 2025 Aaron Tachibana Common Stock D 103,668 $10.78 164,458 D S
25 Nov, 2025 Aaron Tachibana Stock Option (right to buy) D 103,668 $0.00 108,832 D M
03 Nov, 2025 Christopher M Hall Common Stock D 29,612 $8.99 148,486 D S
28 Jul, 2025 Aaron Tachibana Common Stock D 641 $6.57 164,458 D S