Guardant Health CPO reports RSU vesting, tax withholding

Guardant Health, Inc. Chief People Officer Terilyn J. Monroe reported routine equity compensation activity.

Rhea-AI Filing Summary

Guardant Health, Inc. Chief People Officer Terilyn J. Monroe reported routine equity compensation activity. On July 1, 2026, restricted stock units converted into a total of 4,020 shares of Common Stock, reflecting scheduled vesting of prior awards. The company retained 2,099 shares at $170.77 per share to cover Ms. Monroe’s tax withholding obligations, rather than through an open-market sale. Following these transactions, she continues to hold both common shares and unvested restricted stock units as part of her compensation.

Insider Trade Summary

4,020 shares exercised/converted

Exercise 5 txns

Insider Monroe Terilyn J.

Role Chief People Officer

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units	2,659	$0.00	$0.00
Exercise	Restricted Stock Units	1,361	$0.00	$0.00
Exercise	Common Stock	2,659	$0.00	$0.00
Exercise	Common Stock	1,361	$0.00	$0.00
Exercise Price or Tax Liability	Common Stock	2,099	$170.77	$358K

Holdings After Transaction: Restricted Stock Units — 22,818 contracts (Direct); Common Stock — 22,979 shares (Direct)

Footnotes (4)

1. 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.
2. F2. This represents a restricted stock unit award granted on November 8, 2024 that vests over a three-year period. 33% of the shares subject to such award vested on October 1, 2025 and the remaining 67% of the shares vests in equal quarterly installments over the remaining two-year period thereafter.
3. F3. Not applicable for Restricted Stock Units.
4. F4. This represents a restricted stock unit award granted on March 12, 2025 that vests over a three-year period. 33% of the shares subject to such award vests on April 1, 2026 and the remaining 67% of the shares vest in equal quarterly installments over the remaining two-year period thereafter.

Key Figures

Tax-withholding shares: 2,099 shares Tax-withholding price: $170.77 per share RSU exercises to stock: 4,020 shares +3 more

6 metrics

Tax-withholding shares 2,099 shares Common Stock retained by company for tax obligations

Tax-withholding price $170.77 per share Value used for 2,099-share tax-withholding disposition

RSU exercises to stock 4,020 shares Restricted Stock Units converted into Common Stock on July 1, 2026

First RSU exercise block 1,361 RSUs Restricted Stock Units converted into Common Stock

Second RSU exercise block 2,659 RSUs Restricted Stock Units converted into Common Stock

Remaining RSUs after transactions 13,296 units Restricted Stock Units reported as held after transactions

Key Terms

Restricted Stock Units, tax withholding obligations, derivative security, vesting

4 terms

Restricted Stock Units financial

"This represents a restricted stock unit award granted on November 8, 2024 that vests over a three-year period."

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

tax withholding obligations financial

"These shares were retained by the Company in order to meet the tax withholding obligations of the award-holder in connection with the vesting"

derivative security financial

"transaction_code_description: Exercise or conversion of derivative security"

A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.

vesting financial

"the remaining 67% of the shares vests in equal quarterly installments over the remaining two-year period thereafter"

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 07/02/2026 - 06:12 PM EDT Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Monroe Terilyn J.

(Last) (First) (Middle)

3100 HANOVER STREET

(Street)

PALO ALTO CALIFORNIA 94304

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Guardant Health, Inc. [ GH ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief People Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
07/01/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	07/01/2026		M		2,659	A	$0	23,717	D
Common Stock	07/01/2026		M		1,361	A	$0	25,078	D
Common Stock	07/01/2026		F		2,099(1)	D	$170.77	22,979	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Units	$0	07/01/2026		M			2,659	(2)	(3)	Common Stock	2,659	$0	13,296	D
Restricted Stock Units	$0	07/01/2026		M			1,361	(4)	(3)	Common Stock	1,361	$0	9,522	D

Explanation of Responses:

1. 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.

2. This represents a restricted stock unit award granted on November 8, 2024 that vests over a three-year period. 33% of the shares subject to such award vested on October 1, 2025 and the remaining 67% of the shares vests in equal quarterly installments over the remaining two-year period thereafter.

3. Not applicable for Restricted Stock Units.

4. This represents a restricted stock unit award granted on March 12, 2025 that vests over a three-year period. 33% of the shares subject to such award vests on April 1, 2026 and the remaining 67% of the shares vest in equal quarterly installments over the remaining two-year period thereafter.

Remarks:

Table I includes 68 shares acquired under Guardant Health's Employee Stock Purchase Plan on 5/14/2026.

	/s/ John G. Saia, as attorney-in-fact for Terilyn J. Monroe	07/02/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)