Costco officer proposes sale of $829K in stock

Available on EDGAR 11/12/2026 - 09:51 AM EST Accepted by SEC EDGAR 11/12/2026 - 09:50 AM EST Learn about SEC filing dates

Rhea-AI Filing Summary

Costco Wholesale Corp. (COST) officer Sarah Catherine George filed notice of a proposed sale of 757 common shares, with an aggregate market value of $829,064.71. The approximate sale date is November 12, 2026, through Fidelity Brokerage Services LLC; the securities are identified as common stock on Nasdaq.

The shares are attributed to restricted-stock vesting: 756 shares acquired October 22, 2026, and one share acquired October 22, 2025.

Key Figures

Shares proposed for sale: 757 common shares Aggregate market value: $829,064.71 Shares outstanding: 443,129,349 shares

3 metrics

Shares proposed for sale 757 common shares Proposed sale by Sarah Catherine George

Aggregate market value $829,064.71 Shares proposed for sale

Shares outstanding 443,129,349 shares Costco common shares outstanding as reported in the notice

Key Terms

restricted stock vesting, Aggregate Market Value

2 terms

restricted stock vesting financial

"Nature of Acquisition Transaction: Restricted Stock Vesting"

Restricted stock vesting is the timetable and conditions under which shares granted to employees or insiders become fully owned and can be sold, typically requiring continued work or meeting performance goals. It matters to investors because large blocks of shares can become tradable at once, which can change share supply and price, and because vesting aligns insiders’ incentives with the company’s long‑term performance—think of it like a timed unlock that both rewards and locks in key people.

Aggregate Market Value financial

"Aggregate Market Value | 829064.71"

Aggregate market value is the combined price you would pay to buy all outstanding shares of a company or all companies in a group at current market prices — essentially the sum of each stock’s market capitalization. It matters to investors because it shows the overall size and weight of an investment or sector (like the total cost to buy every piece of a puzzle), helps compare scale across companies or markets, and influences index composition and risk exposure.

FAQ

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

How many COST shares does Sarah Catherine George propose to sell?

Sarah Catherine George, an officer of Costco Wholesale Corp., filed notice of a proposed sale of 757 common shares. The notice lists their aggregate market value as $829,064.71.

When is the COST share sale expected, and which broker is named?

The notice gives an approximate sale date of November 12, 2026, and names Fidelity Brokerage Services LLC as the broker.

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

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Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0002112687
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	COSTCO WHOLESALE CORP /NEW
SEC File Number	000-20355
Address of Issuer	999 LAKE DRIVE ISSAQUAH WASHINGTON 98027-
Phone	4253138100
Name of Person for Whose Account the Securities are To Be Sold	George Sarah Catherine
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	757	829064.71	443129349	11/12/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	10/22/2026	Restricted Stock Vesting	Issuer			756	10/22/2026	Compensation
Common	10/22/2025	Restricted Stock Vesting	Issuer			1	10/22/2025	Compensation

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Nothing to Report

144: Remarks and Signature

Remarks
Date of Notice	11/12/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Jared Cook, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Sarah C. George
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)