144 0001652956 XXXXXXXX LIVE 0001576280 Guardant Health, Inc. 001-38683 3100 HANOVER STREET PALO ALTO CA 94304 855-698-8887 Monroe Terilyn J. Officer Common Charles Schwab & Co., Inc.

3000 Schwab Way Westlake TX 76262

3832 355150.00 131170441 04/06/2026 NASDAQ Common 04/01/2026 Restricted Stock Lapse Guardant Health, Inc. N 3832 04/01/2026 Equity Compensation N Terilyn J. Monroe

3100 HANOVER STREET PALO ALTO CA 94304

Guardant Health, Inc. 01/07/2026 10031 1124200.00 Terilyn J. Monroe

3100 HANOVER STREET PALO ALTO CA 94304

Guardant Health, Inc. 01/21/2026 8571 977902.00 04/06/2026 08/02/2025 Terilyn J. Monroe