Darya Chudova - 15 Mar 2026 Form 4 Insider Report for Guardant Health, Inc. (GH)

Role: Chief Technology Officer
Signature: /s/ John G. Saia, as attorney-in-fact for Darya Chudova
Issuer symbol: GH
Transactions as of: 15 Mar 2026
Net transactions value: $0
Form type: 4
Filing time: 17 Mar 2026, 18:46:38 UTC
Previous filing: 13 Mar 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Chudova Darya	Chief Technology Officer	3100 HANOVER STREET, PALO ALTO	/s/ John G. Saia, as attorney-in-fact for Darya Chudova	17 Mar 2026	0001977179

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	GH	Common Stock	Options Exercise		+10,714	+18%	$0.000000^*	70,111	15 Mar 2026	Direct
transaction	GH	Common Stock	Tax liability		-5,759	-8.2%	$85.49^*	64,352	15 Mar 2026	Direct	F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	GH	Performance-Based Restricted Stock Units	Options Exercise		-10,714	-100%	$0.000000^*	0	15 Mar 2026	Common Stock	10,714	$0.000000	Direct	F2, F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	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.
F2	This represents a performance-based restricted stock unit award granted on June 7, 2023 with a 3-year performance metric. The second tranche metric was achieved and the shares vested on March 15, 2026.
F3	Not applicable for Restricted Stock Units.