GH insider sells 260,000 shares for $28.1M

GH reporting person AmirAli Talasaz submitted a Form 144 disclosing secondary sales of Common Stock.

Rhea-AI Filing Summary

GH reporting person AmirAli Talasaz submitted a Form 144 disclosing secondary sales of Common Stock. The filing lists two dispositions: 50,000 shares sold on 05/12/2026 for $5,016,000 and 210,000 shares sold on 05/20/2026 for $23,076,690. The broker named is Stifel Nicolaus & Company Inc. The filing also lists holdings/issuable amounts tied to earlier grants: 5,168 Founder Shares (09/22/2018) and 254,832 shares related to an equity compensation event (04/23/2017).

Insights

Insider Transaction Analyst

Insider disclosed large secondary sales totaling 260,000 shares.

The excerpt shows AmirAli Talasaz reported selling 50,000 shares on 05/12/2026 for $5,016,000 and 210,000 shares on 05/20/2026 for $23,076,690. These amounts are recorded in the "Securities Sold During The Past 3 Months" section and list Stifel Nicolaus & Company Inc as a broker.

Context entries in the filing name 5,168 Founder Shares (09/22/2018) and 254,832 shares from an equity compensation event (04/23/2017). Subsequent filings may clarify remaining holdings and whether planned future sales are intended.

Key Figures

Shares sold (05/12/2026): 50,000 shares Proceeds (05/12/2026): $5,016,000 Shares sold (05/20/2026): 210,000 shares +3 more

6 metrics

Shares sold (05/12/2026) 50,000 shares Sale reported on 05/12/2026 listed under "Securities Sold During The Past 3 Months"

Proceeds (05/12/2026) $5,016,000 Proceeds associated with 50,000-share sale on 05/12/2026

Shares sold (05/20/2026) 210,000 shares Sale reported on 05/20/2026 listed under "Securities Sold During The Past 3 Months"

Proceeds (05/20/2026) $23,076,690 Proceeds associated with 210,000-share sale on 05/20/2026

Founder Shares 5,168 shares Founder Shares dated 09/22/2018 listed in "Securities To Be Sold"

Equity compensation (issuable) 254,832 shares Listed with date 04/23/2017 in "Securities To Be Sold"

Key Terms

Form 144, Founder Shares, Equity Compensation

3 terms

Form 144 regulatory

"Securities Sold During The Past 3 Months (section header)"

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.

Founder Shares financial

"Founder Shares | 09/22/2018 | 5,168"

Founder shares are the ownership stakes given to the people who start a company, often with extra voting power or protections compared with ordinary shares. For investors, they matter because founders’ control and incentives influence decisions about strategy, hiring, and whether the company sells or stays independent — like a family that keeps majority voting rights in a household decision. High founder ownership can mean stable leadership but also a risk that outside shareholders have less influence.

Equity Compensation financial

"Stock Option Exercise | 04/23/2017 | 254,832"

Equity compensation is pay given to employees, executives or contractors in the form of company ownership—such as stock, stock options or restricted shares—rather than just cash. It matters to investors because it can align workers' incentives with shareholders (like paying someone in slices of the same pie they help grow), but it also increases the number of shares outstanding and company expenses, affecting ownership percentages and earnings per share.

FAQ

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

What sales did GH reporting person AmirAli Talasaz disclose on Form 144?

He disclosed sales of 50,000 shares on 05/12/2026 for $5,016,000 and 210,000 shares on 05/20/2026 for $23,076,690, listed under "Securities Sold During The Past 3 Months."

Which broker is named in the GH Form 144 filing?

The filing names Stifel Nicolaus & Company Inc. located at 501 N Broadway, St. Louis, MO as the broker associated with the transactions recorded in the excerpt.

Does the filing show any equity awards or issuable shares for the reporting person?

Yes. The excerpt lists 5,168 Founder Shares (09/22/2018) and 254,832 shares related to an equity compensation event (04/23/2017) as securities tied to the reporting person in the filing.

Are the sale proceeds disclosed in the Form 144 excerpt?

Yes. The excerpt shows proceeds of $5,016,000 for the 05/12/2026 sale and $23,076,690 for the 05/20/2026 sale, both tied to the reported share counts.

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

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Accepted by SEC EDGAR 06/26/2026 - 05:00 PM EDT 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	0001753159
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	Talasaz AmirAli
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	Officer

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 Stock	Stifel Nicolaus & Company Inc 501 N Broadway St. Louis MO 63102	260000	39205972.00	132599929	06/26/2026	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 Stock	09/22/2018	Founder Shares	Issuer			5168	09/22/2018	Founder Shares
Common Stock	04/23/2017	Stock Option Exercise	Issuer			254832	06/26/2026	Equity Compensation

* 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
AmirAli Talasaz 3100 HANOVER STREET PALO ALTO CA 94304	Common Stock	05/12/2026	50000	5016000.00
AmirAli Talasaz 3100 HANOVER STREET PALO ALTO CA 94304	Common Stock	05/20/2026	210000	23076690.00

144: Remarks and Signature

Remarks	Shares were sold out of Talasaz & Eskandari 2017 Family Trust
Date of Notice	06/26/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	12/05/2025
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	/s/ Brian Schneiweiss, as a duly authorized representative of STIFEL, as attorney-in-fact for AmirAli Talasaz
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)