Manuel Hidalgo Medina - 06 Mar 2026 Form 4 Insider Report for Guardant Health, Inc. (GH)

Role: Director
Signature: /s/ John G. Saia, as attorney-in-fact for Manuel Hidalgo Medina
Issuer symbol: GH
Transactions as of: 06 Mar 2026
Net transactions value: -$118,997
Form type: 4
Filing time: 09 Mar 2026, 18:38:15 UTC
Previous filing: 18 Feb 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Hidalgo Medina Manuel	Director	3100 HANOVER STREET, PALO ALTO	/s/ John G. Saia, as attorney-in-fact for Manuel Hidalgo Medina	09 Mar 2026	0001865525

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	GH	Common Stock	Options Exercise		+1,000	+67%	$32.55^*	2,493	06 Mar 2026	Direct
transaction	GH	Common Stock	Sale	$91,606	-1,000	-40%	$91.61	1,493	06 Mar 2026	Direct
transaction	GH	Common Stock	Sale	$27,390	-300	-20%	$91.30	1,193	06 Mar 2026	Direct

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	Stock Option (Right to Buy)	Options Exercise		-1,000	-6.7%	$0.000000^*	14,029	06 Mar 2026	Common Stock	1,000	$32.55	Direct	F1

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

Explanation of Responses:

Id	Content
F1	This represents a stock option award granted on July 17, 2024 and vests over a four-year period. 25% of the shares subject to such award vested on the one-year anniversary of July 17, 2024 and the remaining 75% vests monthly for the three-year period thereafter.