Issuer (NASDAQ: COST) insider plans Rule 144 sale of 458 shares

Rhea-AI Filing Summary

An affiliate of the issuer has filed a notice of proposed sale under Rule 144 covering 458 shares of common stock. The shares are expected to be sold through Morgan Stanley Smith Barney LLC Executive Financial Services on or about 01/16/2026 on the NASDAQ market, with an indicated aggregate market value of $437,390.00. The issuer reports that 443,869,411 shares of this class were outstanding at the time listed.

The 458 shares were acquired on 10/22/2025 as performance stock units from the issuer and are described as compensation. By signing the notice, the seller represents that they are not aware of any undisclosed material adverse information about the issuer’s current or prospective operations.

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	458	437390.00	443869411	01/16/2026	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	10/22/2025	Performance Stock Units	Issuer			458	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

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

What does the Form 144 filing related to COST disclose?

The Form 144 notice discloses a planned sale of 458 shares of common stock of the issuer with ticker COST. The sale is to be made under Rule 144 through a broker on the NASDAQ market.

How many COST shares are proposed to be sold and at what value?

The filing states that 458 shares of common stock are proposed to be sold, with an indicated aggregate market value of $437,390.00 at the time of the notice.

When were the COST shares to be sold under this Form 144 acquired?

The 458 shares covered by the notice were acquired on 10/22/2025 as performance stock units from the issuer, and the nature of payment is described as compensation.

When is the planned sale date for the COST shares in this Form 144?

The approximate date of sale listed is 01/16/2026, with the transaction to occur on the NASDAQ through Morgan Stanley Smith Barney LLC Executive Financial Services.

How many COST common shares are reported as outstanding in the Form 144?

The notice reports that there were 443,869,411 shares of the relevant class of common stock outstanding at the time specified in the form.

What representation does the seller make in this COST Form 144 notice?

By signing, the seller represents that they do not know any material adverse information about the issuer’s current or prospective operations that has not been publicly disclosed.