[Form 4] COSTCO WHOLESALE CORP /NEW Insider Trading Activity

Rhea-AI Filing Summary

Frates Caton, Executive Vice President of Costco Wholesale Corp (COST), reported a sale of 1,540 shares of common stock on 09/29/2025 at a reported price of $910.02 per share. After the transaction the filing shows 9,283.694 shares beneficially owned, held directly. The Form 4 was signed by an attorney-in-fact on 09/30/2025.

Positive

• Timely disclosure of the insider sale with transaction date and price included
• Clear reporting of post-transaction ownership showing 9,283.694 shares remain beneficially owned

Negative

• Insider disposed of 1,540 shares which is a reduction in direct holdings
• No context provided in the filing about the reason for the sale (e.g., planned sale, diversification, tax), so motives are not disclosed

Insights

Financial Analyst

TL;DR: Insider sale disclosed; quantity is modest relative to institutional holdings.

The Form 4 reports a straightforward sale of 1,540 Costco shares by Executive Vice President Frates Caton at $910.02 per share. The filing shows direct beneficial ownership of 9,283.694 shares after the sale, indicating the reporting person retains a meaningful stake. No derivative transactions or additional compensatory details are disclosed. Impact on valuation is likely minimal based solely on this disclosure.

Corporate Governance Expert

TL;DR: Compliance appears timely; transaction is a routine insider disposition.

The Form 4 is properly executed and lists the reporting person, relationship (Executive Vice President), transaction date, and price. The sale is reported with a signature by an attorney-in-fact dated 09/30/2025. There are no indications of amendments, derivatives, or unusual transfer mechanisms in the filing. This constitutes a standard Section 16 disclosure.

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
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person^*

Frates Caton

(Last) (First) (Middle)

999 LAKE DRIVE

(Street)

ISSAQUAH WA 98027

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
COSTCO WHOLESALE CORP /NEW [ COST ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Executive Vice President

3. Date of Earliest Transaction (Month/Day/Year)
09/29/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

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	09/29/2025		S		1,540	D	$910.02	9,283.694	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:

	/s/ Alejandro Torres, Attorney-in-Fact	09/30/2025
	** 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.

FAQ

What transaction did Frates Caton report on Form 4 for COST?

The Form 4 reports a sale of 1,540 shares of Costco common stock on 09/29/2025 at $910.02 per share.

How many Costco shares does the reporting person own after the reported transaction?

The filing shows 9,283.694 shares beneficially owned following the reported sale.

What is the reporting person's role at Costco in this filing?

The reporting person, Frates Caton, is identified as an Executive Vice President of Costco Wholesale Corp.

When was the Form 4 signed and by whom?

The Form 4 was signed by /s/ Alejandro Torres, Attorney-in-Fact on 09/30/2025.

Does the Form 4 show any derivative transactions or amendments?

No derivative transactions or amendment dates are reported in this Form 4; only a non-derivative sale is listed.