Guardant Health (GH) director sells 1,000 shares, retains 639

Rhea-AI Filing Summary

Guardant Health, Inc. director Manuel Hidalgo Medina reported an open-market sale of 1,000 shares of Common Stock at an average price of $130.0601 per share. After this transaction on May 28, 2026, he directly holds 639 shares of Guardant Health common stock.

Insider Trade Summary

Net Seller: 1,000 shares ($130,060)

Net Sell 1 txn

Insider Hidalgo Medina Manuel

Role null

Sold 1,000 shs ($130K)

Type	Security	Shares	Price	Value
Sale	Common Stock	1,000	$130.0601	$130K

Holdings After Transaction: Common Stock — 639 shares (Direct, null)

Footnotes (1)

Key Figures

Shares sold: 1,000 shares Average sale price: $130.0601 per share Shares held after sale: 639 shares +1 more

4 metrics

Shares sold 1,000 shares Open-market sale of Common Stock on May 28, 2026

Average sale price $130.0601 per share Price for the 1,000 Guardant Health shares sold

Shares held after sale 639 shares Total Common Stock directly owned after the transaction

Net shares sold 1,000 shares Net-sell direction in transaction summary

Key Terms

open-market sale, Common Stock, Form 4, beneficially owned

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.

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.

beneficially owned financial

"total shares beneficially owned after the sale"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

Form 4 Insider Transactions: What Each Field Means →

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^*

Hidalgo Medina Manuel

(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)
05/28/2026

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	05/28/2026		S		1,000	D	$130.0601	639	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 Manuel Hidalgo Medina	05/29/2026
	** 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 GH director Manuel Hidalgo Medina report?

Manuel Hidalgo Medina reported selling 1,000 shares of Guardant Health Common Stock in an open-market sale. The reported average sale price was $130.0601 per share, according to the Form 4 insider filing data.

At what price did Manuel Hidalgo Medina sell Guardant Health (GH) shares?

He sold 1,000 Guardant Health Common Stock shares at an average price of $130.0601 per share. This reflects the weighted average price for the open-market transaction reported in the Form 4 filing.

How many Guardant Health (GH) shares does Manuel Hidalgo Medina hold after the sale?

Following the reported transaction, Manuel Hidalgo Medina directly holds 639 shares of Guardant Health Common Stock. This post-transaction holding is disclosed in the Form 4 as the total shares beneficially owned after the sale.

Was the Guardant Health (GH) insider transaction an open-market sale?

Yes, the Form 4 classifies the transaction as an open-market sale of Common Stock. The filing labels the code as “S” and describes it as a sale in open market or private transaction, with 1,000 shares sold.

Does the Form 4 show any derivative transactions for Guardant Health (GH)?

No derivative transactions are listed in this Form 4. The filing’s derivative summary is empty, indicating only a non-derivative Common Stock sale was reported for this specific insider transaction.