Personalis, Inc. engages in the provision of advanced genomic tests for cancer. The firm is also involved in providing sequencing and data analysis services to support population sequencing initiatives. The company was founded by Euan A. Ashley, Michael Snyder, Atul J. Butte, John S. West, and Russ B. Altman in February 2011 and is headquartered in Fremont, CA. |  |
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 | CEO & DirectorMr. Christopher M. Hall M.S.Dr. Richard Chen M.D. CFO & COOMr. Aaron L. Tachibana Ph.D.Dr. Russ B. Altman M.D. FRCPDr. Euan Angus Ashley DPHIL |
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| Insider Trading |
Relationship |
Date |
Transaction |
Cost |
#Shares |
Value ($) |
#Shares Total |
SEC Form 4 |
| Tempus AI, Inc. | 10% Owner | Nov 18 '25 | Buy | 7.67 | 64,750 | 496,632 | 12,783,550 | Feb 13 05:24 PM | | Tempus AI, Inc. | 10% Owner | Nov 25 '25 | Buy | 10.62 | 23,600 | 250,665 | 12,918,346 | Feb 13 05:24 PM | | Tempus AI, Inc. | 10% Owner | Dec 22 '25 | Buy | 8.93 | 28,000 | 250,040 | 13,039,067 | Feb 13 05:24 PM | | Tempus AI, Inc. | 10% Owner | Nov 21 '25 | Buy | 9.40 | 26,499 | 249,190 | 12,869,521 | Feb 13 05:24 PM | | Tempus AI, Inc. | 10% Owner | Nov 24 '25 | Buy | 9.87 | 25,225 | 248,971 | 12,894,746 | Feb 13 05:24 PM | | Tempus AI, Inc. | 10% Owner | Nov 19 '25 | Buy | 8.12 | 30,645 | 248,837 | 12,814,195 | Feb 13 05:24 PM | | Tempus AI, Inc. | 10% Owner | Nov 20 '25 | Buy | 8.63 | 28,827 | 248,777 | 12,843,022 | Feb 13 05:24 PM | | Tempus AI, Inc. | 10% Owner | Dec 17 '25 | Buy | 7.86 | 31,650 | 248,769 | 12,949,996 | Feb 13 05:24 PM | | Tempus AI, Inc. | 10% Owner | Dec 19 '25 | Buy | 8.39 | 29,641 | 248,688 | 13,011,067 | Feb 13 05:24 PM | | Tempus AI, Inc. | 10% Owner | Dec 18 '25 | Buy | 7.91 | 31,430 | 248,611 | 12,981,426 | Feb 13 05:24 PM | | Tachibana Aaron | CFO AND COO | Jan 22 '26 | Option Exercise | 9.16 | 1,201 | 11,001 | 165,659 | Jan 23 06:03 PM | | Tachibana Aaron | CFO AND COO | Jan 22 '26 | Sale | 11.50 | 1,201 | 13,812 | 164,458 | Jan 23 06:03 PM | | AARON L TACHIBANA | Officer | Jan 22 '26 | Proposed Sale | 9.65 | 40,000 | 386,000 | | Jan 22 04:34 PM | | Tachibana Aaron | CFO AND COO | Nov 25 '25 | Option Exercise | 9.16 | 103,668 | 949,599 | 268,126 | Nov 28 05:09 PM | | Tachibana Aaron | CFO AND COO | Nov 25 '25 | Sale | 10.78 | 103,668 | 1,117,541 | 164,458 | Nov 28 05:09 PM | | AARON L TACHIBANA | Officer | Nov 25 '25 | Proposed Sale | 9.99 | 103,668 | 1,035,643 | | Nov 25 04:51 PM | | Hall Christopher M | PRESIDENT AND CEO | Nov 03 '25 | Sale | 8.99 | 29,612 | 266,212 | 148,486 | Nov 05 04:05 PM | | Chen Richard | CHIEF MEDICAL OFFICER AND EVP | Jul 28 '25 | Sale | 6.57 | 452 | 2,970 | 124,505 | Jul 30 04:20 PM | | Tachibana Aaron | CFO AND COO | Jul 28 '25 | Sale | 6.57 | 641 | 4,211 | 164,458 | Jul 30 04:20 PM |
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