Guardant Health (GH)

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-03-11 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: Guardant Health, Inc. (GH) CIK: 0001576280 --- Reporting Owner --- Name: Chudova Darya CIK: 0001977179 Role: Officer (Chief Technology Officer) --- Derivative Transactions --- [Transaction #1] Security: Restricted Stock Units Date: 2026-03-11 | Code: A (Grant or award) Shares: +23,856 | Price: $0.00 Shares Owned After: 23,856 | Ownership: D (Direct) Footnotes: [F1] This represents a restricted stock unit award granted on March 11, 2026 that vests over a three-year period. 33% of the shares subject to such award will vest on April 1, 2027 and the remaining 67% of the shares vests in equal quarterly installments over the remaining two-year period thereafter. [F2] Not applicable for Restricted Stock Units. --- Footnotes (Complete Index) --- F1: This represents a restricted stock unit award granted on March 11, 2026 that vests over a three-year period. 33% of the shares subject to such award will vest on April 1, 2027 and the remaining 67% of the shares vests in equal quarterly installments over the remaining two-year period thereafter. F2: Not applicable for Restricted Stock Units. --- Signature --- /s/ /s/ John G. Saia, as attorney-in-fact for Darya Chudova (2026-03-13)