AmirAli Talasaz - 21 Aug 2026 Form 4 Insider Report for Guardant Health, Inc. (GH)

Reporting relationship: Co-Chief Executive Officer, Director
Issuer ticker: GH
Reported as of: 21 Aug 2026
Net transaction value: -$6,343,384
SEC form: 4
Accepted by SEC: 24 Aug 2026, 17:21:34 UTC
Prior SEC filing: 12 Aug 2026
Next SEC filing: 02 Oct 2026
Source filing: View source filing
Reporting owner signature: /s/ John G. Saia, as attorney-in-fact for AmirAli Talasaz

Key filing fact

AmirAli Talasaz filed Form 4 for Guardant Health, Inc. (GH) on 24 Aug 2026.

Key facts

This page summarizes AmirAli Talasaz's Form 4 filing for Guardant Health, Inc. (GH).
3 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 24 Aug 2026, 17:21.

Change

Previous filing in this sequence was filed on 12 Aug 2026.
Current net transaction value: -$6,343,384.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001753159 Primary reporting owner

Talasaz AmirAli

Relationship: Co-Chief Executive Officer, Director
Address: 3100 HANOVER STREET, PALO ALTO
Signature: /s/ John G. Saia, as attorney-in-fact for AmirAli Talasaz
Signature date: 24 Aug 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

GH transaction

Common Stock

Sale

Transaction value: $1,517,631
Shares: -9,023
Change %: -12%
Price: $168.20
Shares after: 65,977
Date: 21 Aug 2026
Ownership: Shares held by the Talasaz Family Foundation
Footnotes: F1

GH transaction

Common Stock

Sale

Transaction value: $3,533,452
Shares: -20,888
Change %: -32%
Price: $169.16
Shares after: 45,089
Date: 21 Aug 2026
Ownership: Shares held by the Talasaz Family Foundation
Footnotes: F2

GH transaction

Common Stock

Sale

Transaction value: $1,292,302
Shares: -7,589
Change %: -17%
Price: $170.29
Shares after: 37,500
Date: 21 Aug 2026
Ownership: Shares held by the Talasaz Family Foundation
Footnotes: F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

Represents the weighted average sales price per share. These shares were sold in multiple transactions at prices ranging from $167.81 to $168.60. 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.

Footnote F2

Represents the weighted average sales price per share. These shares were sold in multiple transactions at prices ranging from $168.87 to $169.73. 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.

Footnote F3

Represents the weighted average sales price per share. These shares were sold in multiple transactions at prices ranging from $169.88 to $170.50. 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.