Personalis, Inc.
PSNL- Exchange
- Nasdaq
- Industry
- Services-Medical Laboratories
- SEC CIK
- 0001527753
In the last 90 days, Personalis, Inc. insiders filed 0 open-market purchases and 6 sales; 158 institutions reported holding it in 13F filings for Q2 2026, worth $1.14B in total; ARK Invest is the only superinvestor holding it.
Open-market trades, last 90 days
Open-market purchases (P) and sales (S) by Personalis, Inc. insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.
- Open-market buys
- 0 filings
- Open-market sells
- 6 filings
- 4 insiders, $3.29M in total
- Insiders trading
- 4
- Net value
- −$3.29M
- Purchases minus sales
Insider roster
Directors, officers and 10% owners who have filed a Form 4 for Personalis, Inc., current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.
| Name | Title | Last reported holding | Last filing | Filings, past year |
|---|---|---|---|---|
| Moore Stephen Michael | SVP and Chief Legal Officer | 90,257 | Sep 22, 2026 | 3 |
| Chen Richard | President and CMO | 169,882 | Sep 22, 2026 | 4 |
| Hall Christopher M | Chief Executive Officer | 228,527 | Sep 22, 2026 | 7 |
| Tachibana Aaron | CFO AND COO | 195,902 | Sep 22, 2026 | 9 |
| Eastham Karin | Director | 19,756 | Jun 11, 2026 | 1 |
| Bowman A Blaine | Director | 19,756 | May 14, 2026 | 1 |
| Widder Kenneth J | Director | 6,250 | May 14, 2026 | 1 |
| Myers Woodrow A Jr | Director | 32,366 | May 14, 2026 | 1 |
| Shoff Lonnie | Director | 37,190 | May 14, 2026 | 1 |
| Bloom Olivia Kyusuk | Director | 27,265 | May 14, 2026 | 1 |
| Tempus AI, Inc. | 10% Owner | 13,039,067 | Feb 13, 2026 | 1 |
| Colowick Alan | Director | 13,506 | May 19, 2023 | 0 |
| West John Stephen | President and CEO | 622,444 | Dec 14, 2022 | 0 |
| Ludlum Ken | Director | 43,506 | May 19, 2022 | 0 |
| Eggers Barry | Other: Affiliate of 10% Owner | 4,750 | Mar 4, 2022 | 0 |
| Mhatre Ravi | Other: Affiliate of 10% Owner | 4,750 | Mar 4, 2022 | 0 |
| Nieh Peter | Other: Affiliate of 10% Owner | 4,750 | Mar 4, 2022 | 0 |
| Lightspeed Venture Partners Select IV, L.P. | Other: Affiliate of 10% Owner | 4,750 | Mar 4, 2022 | 0 |
| Janmohamed Arif | Other: Affiliate of 10% Owner | 4,750 | Mar 4, 2022 | 0 |
| Lightspeed General Partner Select IV, L.P. | Other: Affiliate of 10% Owner | 4,750 | Mar 4, 2022 | 0 |
| Lightspeed Ultimate General Partner Select IV, L.L.C. | Other: Affiliate of 10% Owner | 4,750 | Mar 4, 2022 | 0 |
Insider trades
Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Jul 12, 2021 (view filing)5:07 PM ET | Jul 8 | 4 days | West John StephenPresident and CEO | SSale | −110.0K | $22.54 | −$2.48M | −14.8%635.5K after | |
| Aug 10, 2021 (view filing) | Aug 6 | 4 days | Chen RichardChief Scientific Officer | SSale | −4.44K | $21.22 | −$94.1K | −5.1%82.4K after | |
| Sep 7, 2021 (view filing) | Sep 2 | 5 days | Chen RichardChief Scientific Officer | SSale | −291 | $21.92 | −$6.38K | −0.4%82.1K after | |
| Sep 7, 2021 (view filing) | Sep 2 | 5 days | Tachibana AaronChief Financial Officer | SSale | −3.82K | $21.92 | −$83.7K | −2.0%188.7K after | |
| Sep 21, 2021 (view filing) | Sep 17 | 4 days | Chen RichardChief Scientific Officer | SSale | −1.09K | $21.25 | −$23.1K | −1.3%81.0K after | |
| Sep 21, 2021 (view filing) | Sep 17 | 4 days | Tachibana AaronChief Financial Officer | SSale | −3.15K | $21.25 | −$67.0K | −1.7%185.5K after | |
| Oct 14, 2021 (view filing) | Oct 12 | 2 days | West John StephenPresident and CEO | SSale | −100.0K | $19.33 | −$1.93M | −14.5%587.8K after | |
| Nov 19, 2021 (view filing) | Nov 17 | 2 days | Chen RichardChief Medical Officer | SSale | −1.25K | $17.04 | −$21.4K | −1.5%79.8K after | |
| Nov 19, 2021 (view filing) | Nov 17 | 2 days | Tachibana AaronChief Financial Officer | SSale | −1.25K | $17.04 | −$21.4K | −0.7%184.3K after | |
| Nov 19, 2021 (view filing) | Nov 17 | 2 days | West John StephenPresident and CEO | SSale | −2.35K | $17.04 | −$40.0K | −0.4%585.4K after | |
| Dec 2, 2021 (view filing) | Nov 30 | 2 days | West John StephenPresident and CEO | SSale | −100.0K | $13.65 | −$1.36M | −17.1%485.4K after | |
| Dec 6, 2021 (view filing) | Dec 2 | 4 days | Tachibana AaronChief Financial Officer | SSale | −4.18K | $12.92 | −$54.1K | −2.3%180.1K after | |
| Dec 6, 2021 (view filing) | Dec 2 | 4 days | Chen RichardChief Medical Officer | SSale | −419 | $12.92 | −$5.41K | −0.5%80.1K after | |
| Dec 17, 2021 (view filing) | Dec 16 | 1 day | West John StephenPresident and CEO | SSale | −97.3K | $13.42 | −$1.31M | −20.0%388.2K after | |
| Dec 20, 2021 (view filing) | Dec 17 | 3 days | West John StephenPresident and CEO | SSale | −2.73K | $12.80 | −$35.0K | −0.7%385.4K after | |
| Dec 20, 2021 (view filing) | Dec 17 | 3 days | Chen RichardChief Medical Officer | SSale | −1.56K | $12.80 | −$20.0K | −1.0%158.5K after | |
| Dec 20, 2021 (view filing) | Dec 17 | 3 days | Tachibana AaronChief Financial Officer | SSale | −3.44K | $12.80 | −$44.0K | −1.3%256.7K after | |
| Jan 19, 2022 (view filing) | Jan 18-19 | 1 day | West John StephenPresident and CEO | SSale | −100.0K | $11.27 | −$1.13M | −25.9%285.5K after | 2 lots |
| Feb 1, 2022 (view filing) | Jan 28 | 4 days | Tachibana AaronChief Financial Officer | SSale | −705 | $9.93 | −$7.00K | −0.3%256.0K after | |
| Feb 1, 2022 (view filing) | Jan 28 | 4 days | Chen RichardChief Medical Officer | SSale | −705 | $9.93 | −$7.00K | −0.4%157.8K after | |
| Mar 4, 2022 (view filing) | Mar 2 | 2 days | Tachibana AaronChief Financial Officer | SSale | −4.51K | $10.18 | −$45.9K | −1.8%251.4K after | |
| Mar 4, 2022 (view filing) | Mar 2 | 2 days | Chen RichardChief Medical Officer | SSale | −471 | $10.18 | −$4.79K | −0.3%157.3K after | |
| Mar 4, 2022 (view filing)8:27 PM ET | Mar 2-3 | 2 days | Eggers Barry and 6 othersOther: Affiliate of 10% Owner | PPurchase | +310.0K | $9.85 | +$3.05M | +17.5%2.08M after | 2 lots |
| Mar 4, 2022 (view filing)8:27 PM ET | Mar 3 | 1 day | Eggers Barry and 6 othersOther: Affiliate of 10% Owner | PPurchase | +4.75K | $10.38 | +$49.3K | New position4.75K after | |
| Apr 15, 2022 (view filing) | Apr 13 | 2 days | West John StephenPresident and CEO | SSale | −64.4K | – | – | −15.9%339.8K after | |
| May 4, 2022 (view filing) | May 2 | 2 days | Moore Stephen MichaelGeneral Counsel | SSale | −5.73K | $5.53 | −$31.7K | −7.0%76.4K after | |
| May 18, 2022 (view filing) | May 16 | 2 days | Chen RichardChief Medical Officer | SSale | −1.29K | $4.86 | −$6.25K | −0.8%155.8K after | |
| May 18, 2022 (view filing) | May 16 | 2 days | Moore Stephen MichaelGeneral Counsel | SSale | −664 | $4.86 | −$3.23K | −0.9%75.7K after | |
| May 18, 2022 (view filing) | May 16 | 2 days | West John StephenPresident and CEO | SSale | −2.41K | $4.86 | −$11.7K | −0.6%382.4K after | |
| May 18, 2022 (view filing) | May 16 | 2 days | Tachibana AaronChief Financial Officer | SSale | −1.29K | $4.86 | −$6.25K | −0.5%246.4K after | |
| Jun 6, 2022 (view filing) | Jun 2 | 4 days | Chen RichardChief Medical Officer | SSale | −421 | $3.59 | −$1.51K | −0.3%154.9K after | |
| Jun 6, 2022 (view filing) | Jun 2 | 4 days | Tachibana AaronChief Financial Officer | SSale | −4.19K | $3.59 | −$15.0K | −1.7%242.2K after | |
| Jun 17, 2022 (view filing) | Jun 15 | 2 days | Tachibana AaronChief Financial Officer | SSale | −6.82K | $3.24 | −$22.1K | −2.8%235.4K after | |
| Jun 17, 2022 (view filing) | Jun 15 | 2 days | Chen RichardChief Medical Officer | SSale | −6.82K | $3.24 | −$22.1K | −4.4%148.1K after | |
| Jun 17, 2022 (view filing) | Jun 15 | 2 days | Moore Stephen MichaelGeneral Counsel | SSale | −1.83K | $3.24 | −$5.94K | −2.4%73.9K after | |
| Jun 21, 2022 (view filing) | Jun 17 | 4 days | Tachibana AaronChief Financial Officer | SSale | −3.44K | $3.29 | −$11.3K | −1.5%231.9K after | |
| Jun 21, 2022 (view filing) | Jun 17 | 4 days | Chen RichardChief Medical Officer | SSale | −1.56K | $3.29 | −$5.15K | −1.1%146.5K after | |
| Aug 1, 2022 (view filing) | Jul 28 | 4 days | Tachibana AaronChief Financial Officer | SSale | −632 | $3.91 | −$2.47K | −0.3%231.3K after | |
| Aug 1, 2022 (view filing) | Jul 28 | 4 days | Chen RichardChief Medical Officer | SSale | −632 | $3.91 | −$2.47K | −0.4%145.9K after | |
| Sep 8, 2022 (view filing) | Sep 2 | 6 daysLate | Tachibana AaronChief Financial Officer | SSale | −4.17K | $3.33 | −$13.9K | −1.8%227.1K after | |
| Sep 8, 2022 (view filing) | Sep 2 | 6 daysLate | Chen RichardChief Medical Officer | SSale | −420 | $3.33 | −$1.40K | −0.3%145.4K after | |
| Sep 22, 2022 (view filing) | Sep 20 | 2 days | Tachibana AaronChief Financial Officer | SSale | −3.47K | $3.48 | −$12.1K | −1.5%223.7K after | |
| Sep 22, 2022 (view filing) | Sep 20 | 2 days | Chen RichardChief Medical Officer | SSale | −1.58K | $3.48 | −$5.50K | −1.1%143.9K after | |
| Nov 18, 2022 (view filing) | Nov 16 | 2 days | Tachibana AaronChief Financial Officer | SSale | −1.29K | $2.71 | −$3.51K | −0.6%222.4K after | |
| Nov 18, 2022 (view filing) | Nov 16 | 2 days | Moore Stephen MichaelGeneral Counsel | SSale | −2.04K | $2.71 | −$5.54K | −2.2%90.4K after | |
| Nov 18, 2022 (view filing) | Nov 16 | 2 days | Chen RichardChief Medical Officer | SSale | −1.29K | $2.71 | −$3.51K | −0.9%142.6K after | |
| Dec 6, 2022 (view filing) | Dec 2 | 4 days | Chen RichardChief Medical Officer | SSale | −440 | $2.60 | −$1.14K | −0.3%142.1K after | |
| Dec 6, 2022 (view filing) | Dec 2 | 4 days | Tachibana AaronChief Financial Officer | SSale | −4.36K | $2.60 | −$11.3K | −2.0%218.0K after | |
| Dec 19, 2022 (view filing) | Dec 15 | 4 days | Chen RichardChief Medical Officer | SSale | −7.18K | $2.50 | −$17.9K | −5.0%134.9K after | |
| Dec 19, 2022 (view filing) | Dec 15 | 4 days | Tachibana AaronChief Financial Officer | SSale | −7.18K | $2.50 | −$17.9K | −3.3%210.8K after |