Guardant Health CTO sells 7,738 shares at $178

Guardant Health’s chief technology officer reported selling 7,738 GH shares and now directly holds 70,635 shares.

Rhea-AI Filing Summary

Guardant Health, Inc. (GH) reported that Chief Technology Officer Darya Chudova sold 7,738 shares of common stock on September 15, 2026 in a sale characterized as an open market or private transaction at $178.00 per share. After this transaction, she directly holds 70,635 shares of Guardant Health common stock. No Rule 10b5-1 trading plan is reported for this sale.

Insider Trade Summary

Net Seller: 7,738 shares

Net Sell 1 txn

Insider Chudova Darya

Role Chief Technology Officer

Sold 7,738 shs ($1.38M)

Type	Security	Shares	Price	Value
Sale	Common Stock	7,738	$178.00	$1.38M

Holdings After Transaction: Common Stock — 70,635 shares (Direct)

Key Figures

Shares sold: 7,738 shares Sale price: $178.00 per share Shares held after transaction: 70,635 shares +1 more

4 metrics

Shares sold 7,738 shares Common stock sold by Chief Technology Officer on September 15, 2026

Sale price $178.00 per share Price for the 7,738 shares of common stock sold

Shares held after transaction 70,635 shares Direct holdings of Chief Technology Officer after the sale

Net buy/sell shares 7,738 shares net sold Net effect of reported Form 4 transactions

Key Terms

open market or private transaction, Rule 10b5-1, beneficial ownership

3 terms

open market or private transaction financial

"Sale in open market or private transaction"

Rule 10b5-1 regulatory

"No Rule 10b5-1 trading plan is reported for this sale"

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

beneficial ownership financial

"Directly holds 70,635 shares of Guardant Health common stock"

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

FAQ

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

What insider transaction did Guardant Health (GH) disclose for Darya Chudova?

Guardant Health disclosed that Chief Technology Officer Darya Chudova sold 7,738 shares of common stock on September 15, 2026 in a sale reported as an open market or private transaction at $178.00 per share.

How many Guardant Health (GH) shares does Darya Chudova hold after the reported sale?

After the reported sale, Chief Technology Officer Darya Chudova directly holds 70,635 shares of Guardant Health common stock, according to the Form 4 disclosure.

What was the sale price in the latest Guardant Health (GH) insider transaction?

The Form 4 reports that the 7,738 shares of Guardant Health common stock sold by Chief Technology Officer Darya Chudova on September 15, 2026 were sold at $178.00 per share.

Was Darya Chudova’s Guardant Health (GH) stock sale under a Rule 10b5-1 plan?

No. The filing indicates that the Rule 10b5-1 checkbox is not marked, so no Rule 10b5-1 trading plan is reported in connection with this sale by Chief Technology Officer Darya Chudova.

Is the reported Guardant Health (GH) insider transaction a purchase or a sale?

The reported transaction is a sale of Guardant Health common stock. Chief Technology Officer Darya Chudova sold 7,738 shares on September 15, 2026 in an open market or private transaction.

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

Form 4 Insider Transactions: What Each Field Means →

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Available on EDGAR 09/17/2026 - 05:11 PM Accepted by SEC EDGAR 09/17/2026 - 05:11 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).

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^*

Chudova Darya

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Technology Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/15/2026

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	09/15/2026		S		7,738	D	$178	70,635	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 Darya Chudova	09/16/2026
	** 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)