X0508 4 2024-12-16 0001527753 Personalis, Inc. PSNL 0001915342 Moore Stephen Michael C/O PERSONALIS, INC. 6600 DUMBARTON CIRCLE FREMONT CA 94555 false true false false SVP and Chief Legal Officer 0 Common Stock 2024-12-16 4 S 0 1513 3.82 D 65875 D Shares automatically sold to cover tax withholding obligation from settlement of vested restricted stock units. The price reported above reflects the weighted average price of the shares sold. The sale price ranged from $3.65 to $3.91 per share. Upon request from the SEC staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4. /s/ Aaron Tachibana, Attorney-in-Fact 2024-12-18