144 0001449535 XXXXXXXX LIVE 0001527753 PERSONALIS INC 001-38943 6600 Dumbarton Circle Fremont CA 94555 6507521330 CHRISTOPHER HALL Director Officer Common Morgan Stanley Smith Barney LLC Executive Financial Services

1 New York Plaza 8th Floor New York NY 10004

100000 949000.00 104721098 05/28/2026 NASDAQ Common 05/28/2026 Exercise of Stock Options Issuer N 100000 05/28/2026 Cash Y The securities to be sold were and will be received upon the exercise of stock options over the next three months. The dates of acquisition and payment were and will be the dates of exercise/sale. 05/28/2026 12/17/2025 /s/ Christopher Hall