COST Form 144: Insider to sell 546 Costco shares worth $0.5M

Rhea-AI Filing Summary

Costco Wholesale Corp. (COST) – Form 144 filing overview

An affiliate of Costco has filed a Form 144 indicating an intent to sell 546 shares of common stock through Morgan Stanley Smith Barney on or about 18 June 2025. The proposed sale represents an aggregate market value of $535,080, implying a reference price of roughly $980 per share. The shares were originally acquired on 22 October 2024 as restricted stock. Form 144 requires the filer to affirm that no undisclosed material adverse information is known and that any sales will be executed in compliance with Rule 144 volume and manner-of-sale limitations.

The filing notes 443,477,086 shares outstanding, so the disposition equals approximately 0.00012 % of shares outstanding—well below any threshold considered material to Costco’s float or daily trading volume. The filer reports no other sales within the past three months.

Given the small size relative to Costco’s market capitalization and share count, the notice is generally considered routine, low-impact disclosure. It nonetheless signals that a related insider is monetising a minor portion of previously awarded equity.

Insights

Securities Analyst

TL;DR: Tiny insider sale (546 shares, $0.5 M) – immaterial to COST’s float and valuation.

The Form 144 covers 546 shares versus 443 M shares outstanding, worth roughly $0.5 M against Costco’s multibillion-dollar market cap. Such volume is far below Rule 144’s 1 % or four-week trading volume caps, indicating no liquidity concerns. No pattern of serial selling is disclosed ("Nothing to Report" for prior three months). Investors often monitor insider activity for sentiment shifts, but this quantum is unlikely to influence price discovery. My impact rating is neutral.

Corporate Governance Expert

TL;DR: Routine Rule 144 compliance; governance safeguards remain intact.

The filer attests to possessing no undisclosed adverse information, satisfying Rule 144 representations. Use of a major broker and scheduled date suggests orderly execution, possibly under a 10b5-1 plan, although not explicitly stated. No red flags emerge regarding control, ownership concentration, or governance. The action does not alter board or executive alignment given its negligible size. Overall governance impact is neutral.

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

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

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

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	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	546	535080.00	443477086	06/18/2025	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	10/22/2024	Restricted Stock	Issuer			546	10/22/2024	Not Applicable

* 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

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

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

How many Costco (COST) shares are being sold under this Form 144?

The notice covers 546 shares of Costco common stock.

What is the estimated market value of the proposed Costco share sale?

The aggregate market value stated in the filing is $535,080.

When is the planned sale date for the Costco shares?

The filer expects to execute the sale on or about 18 June 2025.

What percentage of Costco’s outstanding shares does the sale represent?

The 546 shares equal roughly 0.00012 % of the 443,477,086 shares outstanding.

Who is the broker executing the proposed Costco share sale?

Morgan Stanley Smith Barney LLC Executive Financial Services is listed as the broker.

Were any other Costco shares sold by the filer in the past three months?

No. The filing reports “Nothing to Report” for sales during the previous three-month period.