Guardant Health (GH) director trims holdings with 1,556-share sale

Rhea-AI Filing Summary

Guardant Health, Inc. director Myrtle S. Potter reported an open-market sale of Common Stock. She sold 1,556 shares on June 22, 2026 at an average price of $131.16 per share. After this transaction, she directly holds 20,971 Guardant Health shares.

Insider Trade Summary 10b5-1

Net Seller: 1,556 shares ($204,085)

Net Sell 1 txn

Insider POTTER MYRTLE S

Role null

Sold 1,556 shs ($204K)

Type	Security	Shares	Price	Value
Sale	Common Stock	1,556	$131.16	$204K

Holdings After Transaction: Common Stock — 20,971 shares (Direct, null)

Footnotes (1)

Key Figures

Shares sold: 1,556 shares Sale price per share: $131.16 per share Shares held after transaction: 20,971 shares +1 more

4 metrics

Shares sold 1,556 shares Open-market sale on June 22, 2026

Sale price per share $131.16 per share Average price for the reported sale

Shares held after transaction 20,971 shares Direct ownership following the sale

Net shares sold 1,556 shares Net change in buy/sell activity in this Form 4

Key Terms

open-market sale, Common Stock, transaction code, Form 4

4 terms

open-market sale financial

"transaction_action": "open-market sale""

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Common Stock financial

"security_title": "Common Stock""

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

transaction code financial

"transaction_code": "S""

Form 4 regulatory

"INSIDER FILING DATA (Form 4)"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 06/23/2026 - 05:29 PM Accepted by SEC EDGAR 06/23/2026 - 05:28 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^*

POTTER MYRTLE S

(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)
06/22/2026

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	06/22/2026		S		1,556	D	$131.16	20,971	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 Myrtle S. Potter	06/23/2026
	** 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)

FAQ

What insider transaction did Myrtle S. Potter report at Guardant Health (GH)?

Myrtle S. Potter reported an open-market sale of Guardant Health Common Stock. She sold 1,556 shares on June 22, 2026 at an average price of $131.16 per share, as disclosed in the Form 4 filing.

How many Guardant Health (GH) shares does Myrtle S. Potter now hold?

Following the reported sale, Myrtle S. Potter directly holds 20,971 shares of Guardant Health Common Stock. This post-transaction holding figure comes directly from the Form 4 and reflects her remaining direct ownership after selling 1,556 shares.

Was the Guardant Health (GH) insider transaction a buy or a sell?

The transaction reported by Myrtle S. Potter was a sale of Guardant Health Common Stock. The Form 4 lists the transaction code as “S” and describes it as an open-market sale, indicating she disposed of shares rather than acquiring more.

At what price were the Guardant Health (GH) shares sold in this insider trade?

The 1,556 Guardant Health shares were sold at an average price of $131.16 per share. This sale price is specifically identified in the Form 4 and applies to the entire reported block of Common Stock sold by the director.

Does the Guardant Health (GH) Form 4 involve any derivative securities?

This Form 4 relates only to Common Stock and shows no derivative security transactions. The derivative summary section is empty, indicating there were no reported option exercises, conversions, or other derivative activities in this particular filing.