Guardant Health (GH) 4: Saia John G. sold 9,994 shares of Common Stock at $125.08 o… (May 28, 2026)

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-05-27 10b5-1 Pre-arranged Plan: Yes --- Issuer --- Name: Guardant Health, Inc. (GH) CIK: 0001576280 --- Reporting Owner --- Name: Saia John G. CIK: 0001737840 Role: Officer (Chief Legal Officer) --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-05-27 | Code: S (Open market sale) Shares: -9,994 | Price: $125.08 Total Value: $1,250,079.50 Shares Owned After: 35,956 | Ownership: D (Direct) Footnotes: [F1] Represents the weighted average sales price per share. These shares were sold in multiple transactions at prices ranging from $125.00 to $125.44. The Reporting Person has provided to the Issuer, and undertakes to provide to the staff of the Securities and Exchange Commission or any security holder of the Issuer, upon request, full information regarding the number of shares sold at each separate price within the range. [Transaction #2] Security: Common Stock Date: 2026-05-27 | Code: S (Open market sale) Shares: -6 | Price: $126.08 Total Value: $756.48 Shares Owned After: 35,950 | Ownership: D (Direct) --- Footnotes (Complete Index) --- F1: Represents the weighted average sales price per share. These shares were sold in multiple transactions at prices ranging from $125.00 to $125.44. The Reporting Person has provided to the Issuer, and undertakes to provide to the staff of the Securities and Exchange Commission or any security holder of the Issuer, upon request, full information regarding the number of shares sold at each separate price within the range. --- Signature --- /s/ /s/ John G. Saia (2026-05-28)