Guardant Health (GH) 4: Eltoukhy Helmy sold 13,209 shares of Common Stock at $N/A o… (Mar 17, 2026)

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-01-01 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: Guardant Health, Inc. (GH) CIK: 0001576280 --- Reporting Owner --- Name: Eltoukhy Helmy CIK: 0001752968 Role: Director, Officer (Co-Chief Executive Officer) --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-01-01 | Code: J (Other acquisition/disposition) Shares: -13,209 | Price: $0.00 Shares Owned After: 0 | Ownership: D (Direct) Footnotes: [F1] Reflects changes in form of ownership from direct to indirect due to transfer of shares to Helmy A. Eltoukhy Revocable Trust. [Transaction #2] Security: Common Stock Date: 2026-01-01 | Code: J (Other acquisition/disposition) Shares: +13,209 | Price: $0.00 Shares Owned After: 2,062,726 | Ownership: I (Indirect) | Nature: Shares held by Helmy A. Eltoukhy Revocable Trust Footnotes: [F1] Reflects changes in form of ownership from direct to indirect due to transfer of shares to Helmy A. Eltoukhy Revocable Trust. [Transaction #3] Security: Common Stock Date: 2026-01-01 | Code: M (Exercise of derivative) Shares: +38,283 | Price: $0.00 Shares Owned After: 2,101,009 | Ownership: I (Indirect) | Nature: Shares held by Helmy A. Eltoukhy Revocable Trust [Transaction #4] Security: Common Stock Date: 2026-01-01 | Code: F (Payment of exercise/tax) Shares: -19,402 | Price: $102.14 Total Value: $1,981,720.28 Shares Owned After: 2,081,607 | Ownership: I (Indirect) | Nature: Shares held by Helmy A. Eltoukhy Revocable Trust Footnotes: [F2] These shares were retained by the Company in order to meet the tax withholding obligations of the award-holder in connection with the vesting of an installment of the restricted stock units. The amount retained by the Company was not in excess of the amount of the tax liability. [Transaction #5] Security: Common Stock Date: 2026-03-13 | Code: M (Exercise of derivative) Shares: +26,961 | Price: $0.00 Shares Owned After: 2,108,568 | Ownership: I (Indirect) | Nature: Shares held by Helmy A. Eltoukhy Revocable Trust [Transaction #6] Security: Common Stock Date: 2026-03-13 | Code: F (Payment of exercise/tax) Shares: -13,664 | Price: $85.49 Total Value: $1,168,135.36 Shares Owned After: 2,094,904 | Ownership: I (Indirect) | Nature: Shares held by Helmy A. Eltoukhy Revocable Trust Footnotes: [F2] These shares were retained by the Company in order to meet the tax withholding obligations of the award-holder in connection with the vesting of an installment of the restricted stock units. The amount retained by the Company was not in excess of the amount of the tax liability. --- Derivative Transactions --- [Transaction #1] Security: Restricted Stock Units Date: 2026-01-01 | Code: M (Exercise of derivative) Shares: -38,283 | Price: $0.00 Shares Owned After: 77,727 | Ownership: D (Direct) Footnotes: [F3] This represents a restricted stock unit award granted on March 12, 2025 that vested with respect to 33% of the shares on January 1, 2026 and the remaining 67% of the shares vests in equal quarterly installments over the remaining two-year period thereafter. [F4] Not applicable for Restricted Stock Units. [Transaction #2] Security: Performance-Based Restricted Stock Units Date: 2026-03-13 | Code: M (Exercise of derivative) Shares: -26,961 | Price: $0.00 Shares Owned After: 0 | Ownership: D (Direct) Footnotes: [F4] Not applicable for Restricted Stock Units. [Transaction #3] Security: Restricted Stock Units Date: 2026-03-17 | Code: A (Grant or award) Shares: +11,268 | Price: $0.00 Shares Owned After: 11,268 | Ownership: D (Direct) Footnotes: [F5] This represents a restricted stock unit award granted on March 17, 2026 that vests in four equal installments on the last day of each calendar quarter, March 31, 2026, June 30, 2026, September 30, 2026, and December 31, 2026. [F4] Not applicable for Restricted Stock Units. [Transaction #4] Security: Restricted Stock Units Date: 2026-03-17 | Code: A (Grant or award) Shares: +101,409 | Price: $0.00 Shares Owned After: 101,409 | Ownership: D (Direct) Footnotes: [F6] This represents a restricted stock unit award granted on March 17, 2026 that vests over a three-year period. 33% of the shares subject to such award vests on January 1, 2027 and the remaining 67% of the shares vest in equal quarterly installments over the remaining two-year period thereafter. [F4] Not applicable for Restricted Stock Units. --- Footnotes (Complete Index) --- F1: Reflects changes in form of ownership from direct to indirect due to transfer of shares to Helmy A. Eltoukhy Revocable Trust. F2: These shares were retained by the Company in order to meet the tax withholding obligations of the award-holder in connection with the vesting of an installment of the restricted stock units. The amount retained by the Company was not in excess of the amount of the tax liability. F3: This represents a restricted stock unit award granted on March 12, 2025 that vested with respect to 33% of the shares on January 1, 2026 and the remaining 67% of the shares vests in equal quarterly installments over the remaining two-year period thereafter. F4: Not applicable for Restricted Stock Units. F5: This represents a restricted stock unit award granted on March 17, 2026 that vests in four equal installments on the last day of each calendar quarter, March 31, 2026, June 30, 2026, September 30, 2026, and December 31, 2026. F6: This represents a restricted stock unit award granted on March 17, 2026 that vests over a three-year period. 33% of the shares subject to such award vests on January 1, 2027 and the remaining 67% of the shares vest in equal quarterly installments over the remaining two-year period thereafter. --- Signature --- /s/ /s/ John G. Saia, as attorney-in-fact for Helmy Eltoukhy (2026-03-17)