Guardant Health insider files to sell 14,180 shares

Guardant Health, Inc. insider Ian T. Clark filed notice of a proposed sale of 14,180 shares of common stock, with an aggregate market value of $2,253,450.00, to be sold on or about 08/04/2026 through Charles Schwab & Co., Inc. on NASDAQ.

Rhea-AI Filing Summary

Guardant Health, Inc. insider Ian T. Clark filed notice of a proposed sale of 14,180 shares of common stock, with an aggregate market value of $2,253,450.00, to be sold on or about 08/04/2026 through Charles Schwab & Co., Inc. on NASDAQ. Guardant Health had 134,196,170 shares of common stock outstanding in connection with this notice. During the prior three months, Clark sold 6,876 shares on 05/20/2026 for $735,049.00, and the filing lists planned transactions tied to restricted stock lapse and an employee stock option exercise.

Key Figures

Shares to be sold: 14,180 shares Aggregate market value of proposed sale: $2,253,450.00 Shares outstanding: 134,196,170 shares +5 more

8 metrics

Shares to be sold 14,180 shares Proposed sale of Guardant Health common stock

Aggregate market value of proposed sale $2,253,450.00 Value of 14,180 shares of Guardant Health common stock

Shares outstanding 134,196,170 shares Guardant Health common stock referenced with the Form 144 notice

Approximate sale date 08/04/2026 Planned timing for proposed sale on NASDAQ

Recent shares sold 6,876 shares Shares sold by Ian T. Clark on 05/20/2026

Aggregate value of recent sale $735,049.00 Value of 6,876 shares sold on 05/20/2026

Restricted stock lapse shares 5,092 shares Restricted stock lapse on 06/17/2026

Stock option exercise shares 9,088 shares Employee stock option exercise on 08/04/2026

Key Terms

Form 144, Restricted Stock Lapse, Employee Stock Option Exercise, Broker Payment for Cashless Exercise

4 terms

Form 144 regulatory

"144: Securities To Be Sold"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Restricted Stock Lapse financial

"Common | 06/17/2026 | Restricted Stock Lapse - See Remarks"

Employee Stock Option Exercise financial

"Common | 08/04/2026 | Employee Stock Option Exercise"

Broker Payment for Cashless Exercise financial

"9088 | 08/04/2026 | Broker Payment for Cashless Exercise"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does Guardant Health (GH) insider Ian T. Clark intend to sell under this Form 144?

Ian T. Clark filed to potentially sell 14,180 shares of Guardant Health common stock. The filing shows an aggregate market value of $2,253,450.00 for these shares, with sales expected to be executed on NASDAQ.

When are the proposed Guardant Health (GH) share sales expected to occur?

The Form 144 lists an approximate sale date of 08/04/2026 for the 14,180 shares of Guardant Health common stock. Actual execution can vary, but this date anchors the planned disposition window.

How many Guardant Health (GH) shares has Ian T. Clark sold in the past three months?

Over the prior three months, Ian T. Clark sold 6,876 shares of Guardant Health common stock. Those shares had an aggregate market value of $735,049.00 and were sold on 05/20/2026.

What is the outstanding share count of Guardant Health (GH) referenced in this Form 144?

The filing references 134,196,170 shares of Guardant Health common stock outstanding. This figure provides context for the 14,180 shares covered by the proposed sale notice under Form 144.

What types of equity events are linked to Ian T. Clark’s Guardant Health (GH) shares?

The Form 144 lists a restricted stock lapse on 06/17/2026 involving 5,092 shares and an employee stock option exercise on 08/04/2026 involving 9,088 shares, including a broker payment for a cashless exercise.

Through which broker and exchange will the Guardant Health (GH) shares potentially be sold?

The proposed sale of 14,180 shares is associated with Charles Schwab & Co., Inc. as broker. The Form 144 indicates that trades are expected to occur on the NASDAQ market.

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

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Available on EDGAR 08/04/2026 - 05:10 PM Accepted by SEC EDGAR 08/04/2026 - 05:09 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001336504
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Guardant Health, Inc.
SEC File Number	001-38683
Address of Issuer	3100 HANOVER STREET PALO ALTO CALIFORNIA 94304
Phone	855-698-8887
Name of Person for Whose Account the Securities are To Be Sold	CLARK IAN T
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Director

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Charles Schwab & Co., Inc. 3000 Schwab Way Westlake TX 76262	14180	2253450.00	134196170	08/04/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	06/17/2026	Restricted Stock Lapse - See Remarks	GUARDANT HEALTH, INC.			5092	06/17/2026	Equity Compensation
Common	08/04/2026	Employee Stock Option Exercise	GUARDANT HEALTH, INC.			9088	08/04/2026	Broker Payment for Cashless Exercise

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
IAN T CLARK 3100 HANOVER STREET PALO ALTO CA 94304	Guardant Health, Inc.	05/20/2026	6876	735049.00

144: Remarks and Signature

Remarks	The RSU shares in this filing were sold in the Thornton-Clark Family Trust.
Date of Notice	08/04/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	IAN T CLARK TTEE
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)