Guardant Health (GH) director sells 100 shares at $65.84

Insider sale by Guardant Health director Meghan V. Joyce.

Rhea-AI Filing Summary

Insider sale by Guardant Health director Meghan V. Joyce. The filing shows a sale of 100 shares of Guardant Health common stock on 09/02/2025 at a price of $65.84 per share. After the transaction Ms. Joyce beneficially owned 11,183 shares, held directly. The form indicates the sale was made pursuant to a 10b5-1 plan. The filing is signed by an attorney-in-fact on behalf of the reporting person.

Insights

Securities Analyst

TL;DR: Routine, small director sale executed under a 10b5-1 plan; unlikely to be material to GH valuation.

This Form 4 documents a disposition of 100 shares at $65.84, leaving the director with 11,183 shares. The checked box indicates the transaction was made pursuant to a 10b5-1 trading plan, which typically provides pre-established authorization and reduces concerns about opportunistic timing. The size of the sale (100 shares) is immaterial relative to total outstanding shares, suggesting limited informational content about company fundamentals.

Corporate Governance Expert

TL;DR: Disclosure aligns with Section 16 obligations and shows use of an affirmative defense plan.

The filing includes required details: reporting person identity, relationship (Director), transaction date, price, and post-transaction beneficial ownership. The presence of a 10b5-1 indicator suggests the sale followed an established plan, which is a governance best practice for insiders. No other derivative or complex transactions are reported. From a governance perspective, the filing is compliant and routine.

Insider Trade Summary

Net Seller: 100 shares

Net Sell 1 txn

Insider Joyce Meghan V.

Role Director

Sold 100 shs ($7K)

Type	Security	Shares	Price	Value
Sale	Common Stock	100	$65.84	$7K

Holdings After Transaction: Common Stock — 11,183 shares (Direct)

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

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Accepted by SEC EDGAR 09/03/2025 - 06:50 PM 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).

X

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^*

Joyce Meghan V.

(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)
09/02/2025

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
Common Stock	09/02/2025		S		100	D	$65.84	11,183	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

Explanation of Responses:

Remarks:

	/s/ John G. Saia, as attorney-in-fact for Meghan Verena Joyce	09/03/2025
	** 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.