[Form 4] Costco Wholesale Corp Insider Trading Activity

Rhea-AI Filing Summary

Teresa A. Jones, Executive Vice President and Director of Costco Wholesale Corp (COST), reported a sale of company shares on 08/20/2025. The Form 4 shows she disposed of 600 shares of Common Stock at a price of $992.05 per share, leaving her with 2,362.125 shares beneficially owned after the transaction. The filing notes that 1.183 shares were inadvertently omitted from prior reports and are included in the post-transaction total. The form was executed on behalf of the reporting person by an attorney-in-fact, Alejandro Torres, on 08/22/2025. The filing is a single-person Form 4 disclosure and contains only this non-derivative sale.

Positive

• Correction disclosed: The filing explicitly corrects an inadvertent omission of 1.183 shares, improving reporting accuracy.
• Proper execution: The Form 4 was signed by an attorney-in-fact (Alejandro Torres), meeting signature requirements.

Negative

• None.

Insights

Securities Analyst

TL;DR: Insider sold a small stake — 600 shares — reducing holdings to 2,362.125 shares; minor correction added 1.183 shares to prior reporting.

The transaction is a straightforward non-derivative sale reported under Section 16. The sale size (600 shares) is immaterial relative to the disclosed remaining holding and does not indicate issuance or derivative activity. The explicit correction of 1.183 shares improves reporting accuracy but is immaterial in scale. No additional context on the reason for sale or any rule 10b5-1 plan is provided, so conclusions about intent cannot be drawn from this filing alone.

Corporate Governance Expert

TL;DR: Disclosure is routine; the correction improves transparency but contains no material governance concerns.

The Form 4 discloses an ordinary sale by an officer/director and a minor prior reporting omission. The filing is properly signed by an attorney-in-fact, satisfying signature requirements. There are no indications of related-party transactions, derivative exercises, or material changes in beneficial ownership thresholds. From a governance standpoint, the filing is a routine compliance disclosure that resolves a small reporting inaccuracy.

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^*

Jones Teresa A.

(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)
08/20/2025

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	08/20/2025		S		600	D	$992.05	2,362.125(1)	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:

1. Includes 1.183 shares that were inadvertently not previously reported.

	/s/ Alejandro Torres, Attorney-in-Fact	08/22/2025
	** 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 Teresa A. Jones report on the Form 4 for COST?

She sold 600 shares of Costco Common Stock on 08/20/2025 at a price of $992.05 per share.

How many shares does Teresa A. Jones beneficially own after the reported sale?

2,362.125 shares are reported as beneficially owned following the transaction.

Was there a correction or amendment noted in the Form 4?

Yes. The filing states 1.183 shares were inadvertently not previously reported and are included now.

Who signed the Form 4 and when was it signed?

Alejandro Torres, Attorney-in-Fact, signed the form on 08/22/2025.

Is this filing part of a joint filing or filed by one reporting person?

It is filed by one reporting person. The form indicates a single reporting person submission.