[Form 4] Guardant Health, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Guardant Health director Roberto Mignone received new equity compensation grants on June 18, 2025, consisting of:

• Stock Options: 6,833 options to purchase common stock at an exercise price of $50.57 per share, expiring June 18, 2035
• Restricted Stock Units (RSUs): 4,203 RSUs at zero cost basis

Both grants feature a one-year vesting schedule, becoming fully vested on either June 18, 2025, or the date of the next annual stockholders meeting, whichever occurs first. The compensation package appears to be standard director remuneration, filed as required under SEC Section 16(a) regulations. The filing was completed by John G. Saia as attorney-in-fact for Mignone on June 20, 2025.

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
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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^*

MIGNONE ROBERTO

(Last) (First) (Middle)

3100 HANOVER STREET

(Street)

PALO ALTO CA 94304

(City) (State) (Zip)

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

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

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

3. Date of Earliest Transaction (Month/Day/Year)
06/18/2025

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

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

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

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

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
Stock Option (Right to Buy)	$50.57	06/18/2025		A		6,833		(1)	06/18/2035	Common Stock	6,833	$0	6,833	D
Restricted Stock Units	$0	06/18/2025		A		4,203		(2)	(3)	Common Stock	4,203	$0	4,203	D

Explanation of Responses:

1. The stock option vests in full on the one-year anniversary of the grant date, June 18, 2025 or the date of the next year annual stockholders meeting, whichever is earlier.

2. The restricted stock units vest in full on the one-year anniversary of the grant date, June 18, 2025 or the date of the next year annual stockholders meeting, whichever is earlier.

3. Not applicable for Restricted Stock Units.

Remarks:

	/s/ John G. Saia, as attorney-in-fact for Roberto A. Mignone	06/20/2025
	** 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.

FAQ

What stock options did GH director Roberto Mignone receive on June 18, 2025?

Roberto Mignone received 6,833 stock options with an exercise price of $50.57. These options vest in full on June 18, 2026 (one-year anniversary) or the date of the next annual stockholders meeting, whichever is earlier, and expire on June 18, 2035.

How many Restricted Stock Units (RSUs) were granted to Roberto Mignone at Guardant Health (GH)?

Roberto Mignone was granted 4,203 Restricted Stock Units (RSUs) on June 18, 2025. These RSUs vest in full on the one-year anniversary of the grant date or the date of the next annual stockholders meeting, whichever occurs earlier.

What is the vesting schedule for GH director Mignone's June 2025 equity grants?

Both the stock options and RSUs granted to Mignone have the same vesting schedule - they vest in full on June 18, 2026 (one-year anniversary of the grant date) or the date of the next annual stockholders meeting, whichever occurs earlier.

What positions does Roberto Mignone hold at Guardant Health (GH)?

According to the Form 4 filing, Roberto Mignone serves as a Director of Guardant Health (GH). The filing indicates he is not an officer or 10% owner of the company.

What was the total value of RSUs granted to GH director Mignone in June 2025?

The Form 4 shows that Mignone received 4,203 RSUs with a $0 exercise price. However, the actual market value of these RSUs would be based on GH's stock price at the time of grant, which is not disclosed in this filing.