COST Form 144 Notice — Insider Plans to Sell 600 Shares (~$595K)

Rhea-AI Filing Summary

Costco proposed insider sale notice: The filing reports a proposed sale of 600 common shares via Fidelity Brokerage Services with an aggregate market value of $595,230.06. The shares represent a small fraction of the reported 443,477,086 shares outstanding. The approximate sale date is 08/20/2025 on NASDAQ. Acquisition history shows 25 shares received as compensation on 01/15/2014 and 575 shares from restricted stock vesting on 10/22/2023. The filer certifies they are not aware of undisclosed material adverse information.

Insights

Securities Analyst

TL;DR: Routine Form 144 notice for a small insider sale; immaterial relative to outstanding shares.

The filing discloses a proposed sale of 600 shares valued at about $595k, executed through Fidelity, with an expected trade date of 08/20/2025. Relative to 443.5 million shares outstanding, the size is negligible and unlikely to affect liquidity or share price. Acquisition dates indicate most shares are from recent restricted stock vesting and earlier compensation, consistent with typical executive equity schedules. No sales in the prior three months are reported.

Corporate Governance Expert

TL;DR: Disclosure complies with Rule 144 norms; filing includes required acquisition and sale details and certification.

The form contains the standard attestations and lists the broker, quantity, market value, and acquisition provenance for the shares to be sold. The filer affirms absence of undisclosed material adverse information and provides the required signature/representation language. This is a routine governance disclosure and does not signal governance or disclosure concerns by itself.

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	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	600	595230.06	443477086	08/20/2025	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	01/15/2014	Compensation	Issuer			25	01/15/2014	Compensation
Common	10/22/2023	Restricted Stock Vesting	Issuer			575	10/22/2023	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)