Guardant Health (NASDAQ: GH) director sells 14,180 shares after exercises

Rhea-AI Filing Summary

Guardant Health, Inc. director Ian T. Clark exercised stock options and sold shares held through a family trust. On 2026-08-04, options for 2,255 and 6,833 shares of common stock were exercised at strike prices of $91.11 and $50.57. The Thornton-Clark Family Trust then sold a total of 14,180 common shares at weighted average prices of $158.98 and $158.80, within disclosed price ranges.

Insider Trade Summary

Exercise and sale activity reported; no spread calculated

Exercise and Sale 6 txns

Insider CLARK IAN T

Role Director

Sold 14,180 shs ($2.25M)

Approx. gross sale proceeds $2.25M

Approx. exercise cost $551K

Type	Security	Shares	Price	Value
Exercise	Stock Option (Right to Buy) F3	2,255	$0.00	$0.00
Exercise	Stock Option (Right to Buy) F4	6,833	$0.00	$0.00
Exercise	Common Stock	2,255	$91.11	$205K
Exercise	Common Stock	6,833	$50.57	$346K
Sale	Common Stock F1	9,088	$158.9816	$1.44M
Sale	Common Stock F2	5,092	$158.8032	$809K

Holdings After Transaction: Stock Option (Right to Buy) — 0 shares (Direct); Common Stock — 2,975 shares (Indirect, By The Thornton-Clark Family Trust, J Thornton-Clark & I Clark TTE Account)

Footnotes (4)

1. F1. Represents the weighted average sales price per share. These shares were sold in multiple transactions at prices ranging from $158.510 to $159.435. The Reporting Person has provided to the Issuer, and undertakes to provide to the staff of the Securities and Exchange Commission or any security holder of the Issuer, upon request, full information regarding the number of shares sold at each separate price within the range.
2. F2. Represents the weighted average sales price per share. These shares were sold in multiple transactions at prices ranging from $158.51 to $159.14. The Reporting Person has provided to the Issuer, and undertakes to provide to the staff of the Securities and Exchange Commission or any security holder of the Issuer, upon request, full information regarding the number of shares sold at each separate price within the range.
3. F3. The stock option vested in full on June 12, 2020.
4. F4. The stock option vested in full on June 17, 2026.

Key Figures

Total shares sold: 14,180 shares First sale tranche: 9,088 shares at $158.9816 per share Second sale tranche: 5,092 shares at $158.8032 per share +3 more

6 metrics

Total shares sold 14,180 shares Common shares sold indirectly by family trust on 2026-08-04

First sale tranche 9,088 shares at $158.9816 per share Weighted average price; trades ranged from $158.510 to $159.435

Second sale tranche 5,092 shares at $158.8032 per share Weighted average price; trades ranged from $158.51 to $159.14

Option exercise shares 9,088 shares Total common shares acquired via option exercises on 2026-08-04

Option strike price 1 $91.11 per share Stock option on 2,255 shares, expiring June 18, 2029

Option strike price 2 $50.57 per share Stock option on 6,833 shares, expiring June 18, 2035

Key Terms

Stock Option (Right to Buy), weighted average sales price per share, Exercise or conversion of derivative security, indirect ownership

4 terms

Stock Option (Right to Buy) financial

"security_title listed as Stock Option (Right to Buy) for derivative entries"

weighted average sales price per share financial

"Footnotes describe a weighted average sales price per share over trade ranges"

Exercise or conversion of derivative security financial

"transaction_code_description states Exercise or conversion of derivative security"

indirect ownership financial

"ownership_type marked indirect for shares held by The Thornton-Clark Family Trust"

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 08/05/2026 - 05:06 PM Accepted by SEC EDGAR 08/05/2026 - 05:05 PM Learn about SEC filing dates

FAQ

What did Ian T. Clark report in his latest Form 4 for Guardant Health (GH)?

Ian T. Clark reported stock option exercises for 2,255 and 6,833 Guardant Health shares and subsequent sales of 14,180 common shares held indirectly through a family trust, all dated August 4, 2026.

How many Guardant Health (GH) shares were sold in this Form 4 filing?

The filing reports 14,180 common shares sold indirectly by The Thornton-Clark Family Trust. These were executed in two transactions of 9,088 and 5,092 shares at weighted average prices near $159 per share.

At what prices were the Guardant Health (GH) shares sold in the reported transactions?

The trust’s sales were at weighted average prices of $158.9816 and $158.8032 per share, with individual trades occurring in ranges of $158.510–$159.435 and $158.51–$159.14, respectively, according to the footnotes.

What stock options did Ian T. Clark exercise in Guardant Health (GH)?

Clark exercised two stock options covering 2,255 and 6,833 shares of Guardant Health common stock at exercise prices of $91.11 and $50.57 per share, with expirations on June 18, 2029 and June 18, 2035.

Were the Guardant Health (GH) transactions held directly by Ian T. Clark?

The exercised options were reported as direct holdings, while the common stock involved in the sales was held indirectly by The Thornton-Clark Family Trust, J Thornton-Clark & I Clark TTE Account, as noted in the ownership details.

Does the Form 4 for Guardant Health (GH) show more shares sold or acquired?

The Form 4 shows 9,088 shares acquired through option exercises and 14,180 shares sold by the family trust, indicating that more shares were sold than acquired in these transactions on August 4, 2026.

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^*

CLARK IAN T

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/04/2026

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	08/04/2026		M		2,255	A	$91.11	10,322	I	By The Thornton-Clark Family Trust, J Thornton-Clark & I Clark TTE Account
Common Stock	08/04/2026		M		6,833	A	$50.57	17,155	I	By The Thornton-Clark Family Trust, J Thornton-Clark & I Clark TTE Account
Common Stock	08/04/2026		S		9,088	D	$158.9816(1)	8,067	I	By The Thornton-Clark Family Trust, J Thornton-Clark & I Clark TTE Account
Common Stock	08/04/2026		S		5,092	D	$158.8032(2)	2,975	I	By The Thornton-Clark Family Trust, J Thornton-Clark & I Clark TTE Account

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)	$91.11	08/04/2026		M			2,255	(3)	06/18/2029	Common Stock	2,255	$0	0	D
Stock Option (Right to Buy)	$50.57	08/04/2026		M			6,833	(4)	06/18/2035	Common Stock	6,833	$0	0	D

Explanation of Responses:

1. Represents the weighted average sales price per share. These shares were sold in multiple transactions at prices ranging from $158.510 to $159.435. The Reporting Person has provided to the Issuer, and undertakes to provide to the staff of the Securities and Exchange Commission or any security holder of the Issuer, upon request, full information regarding the number of shares sold at each separate price within the range.

2. Represents the weighted average sales price per share. These shares were sold in multiple transactions at prices ranging from $158.51 to $159.14. The Reporting Person has provided to the Issuer, and undertakes to provide to the staff of the Securities and Exchange Commission or any security holder of the Issuer, upon request, full information regarding the number of shares sold at each separate price within the range.

3. The stock option vested in full on June 12, 2020.

4. The stock option vested in full on June 17, 2026.

Remarks:

	/s/ John G. Saia, as attorney-in-fact for Ian T. Clark	08/05/2026
	** 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)