Personalis, Inc.
A cancer genomics company that reads the full DNA of a patient's tumor to help doctors spot cancer returning earlier than scans can. Its flagship test, NeXT Personal, is a liquid biopsy that hunts for tiny traces of tumor DNA in a blood sample. Founded in 2011 by Stanford University researchers, the company's name comes from "personalized" medicine — tailoring cancer care to each patient's unique genetic makeup.
Bought 3.82M
Bought 314.8K
Granted 537.0K · Sold 469.2K
Granted 287.5K · Sold 276.5K
Granted 354.3K · Sold 344.2K
Granted 129.1K · Sold 57.7K
Granted 10.8K
Granted 65.3K · Sold 36.5K
Granted 37.2K
Granted 17.0K · Bought 10.0K
Granted 27.3K
Granted 17.0K
Granted 17.0K
Granted 10.8K
Granted 6.3K
| Insider | Stake change | Holds now | Granted / vested | Bought | Sold |
|---|---|---|---|---|---|
| Tempus AI, Inc.10% owner · 15 transactions | — | 13.04M | — | 3.82M | — |
| Eggers Barry +6 co-filersAffiliate of 10% Owner · 3 transactions | — | 8.17Mas of Mar 2022 | — | 314.8K | — |
| West John StephenPresident and CEO, Director · 24 transactions | -21% | 622.4Kas of Dec 2022 | 537.0K | — | 469.2K |
| Hall Christopher MChief Executive Officer, Director · 10 transactions | — | 236.0K | 287.5K | — | 276.5K |
| Tachibana AaronCFO AND COO · 50 transactions | +5.9% | 203.8K | 354.3K | — | 344.2K |
| Chen RichardPresident and CMO · 39 transactions | +111% | 173.9K | 129.1K | — | 57.7K |
| Ludlum KenDirector · 1 transaction | +10.5% | 113.5Kas of May 2022 | 10.8K | — | — |
| Moore Stephen MichaelSVP and Chief Legal Officer · 19 transactions | — | 92.3K | 65.3K | — | 36.5K |
| Shoff LonnieDirector · 2 transactions | — | 37.2K | 37.2K | — | — |
| Myers Woodrow A JrDirector · 3 transactions | +505.4% | 32.4K | 17.0K | 10.0K | — |
| Bloom Olivia KyusukDirector · 3 transactions | — | 27.3K | 27.3K | — | — |
| Bowman A BlaineDirector · 2 transactions | +622.1% | 19.8K | 17.0K | — | — |
| Eastham KarinDirector · 2 transactions | +622.1% | 19.8K | 17.0K | — | — |
| Colowick AlanDirector · 1 transaction | +393.6% | 13.5Kas of May 2022 | 10.8K | — | — |
| Widder Kenneth JDirector · 1 transaction | — | 6.3K | 6.3K | — | — |
Select a row to see that insider’s individual transactions. Sum of the holdings confirmed in the 12 months before this insider's last filing. A Form 4 reports a holding per line — held directly, or through a named trust, partnership or foundation, and in each share class separately — never a person’s total. Lines not restated in that time are left out and shown apart: an active filer restates what they still hold, so a line they did not restate is more often an entity since renamed, whose shares a successor line reports too. An amber marker means some were left out.
Net open-market activity over the last 5 years: +2.96M shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.