144 0001307313 XXXXXXXX LIVE 0001162194 STANDARD BIOTOOLS INC. 001-34180 2 TOWER PLACE SUITE 2000 SOUTH SAN FRANCISCO CA 94080 6502666000 Burbach Gerhard F Former Director Common Fidelity Brokerage Services LLC

900 Salem Street Smithfield RI 02917

15000 40404.01 78964770 08/17/2023 NASDAQ Common 04/05/2018 Restricted Stock Vesting Issuer N 5000 04/05/2018 Compensation Common 05/30/2018 Restricted Stock Vesting Issuer N 3000 05/30/2018 Compensation Common 06/23/2021 Restricted Stock Vesting Issuer N 7000 06/23/2021 Compensation Y 08/17/2023 /s/ Gary Redman, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Gerhard F. Burbach