NEW (COST)

Role: Executive VP
Signature: /s/ Alejandro Torres, Attorney-in-Fact
Stock symbol: COST
Transactions as of: Jan 12, 2024
Transactions value $: $0
Form type: 4/A
Date filed: 2/22/2024, 05:13 PM
Date Of Original Report: Jan 24, 2024
Previous filing: Oct 24, 2023

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	COST	Common Stock	Award	$0	+245	+0.61%	$0.00	40.6K	Jan 12, 2024	Direct	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	On January 12, 2024, the reporting person filed a Form 4 reporting the acquisition of 138.186 additional restricted stock units ("RSUs") resulting from the upward adjustment of outstanding unvested RSUs by a factor of 1.018, in connection with the special cash dividend payable by the issuer on January 12, 2024. Instead, as reported in this amendment, the correct number of additional RSUs was 245.16. The adjustment in connection with the special dividend was required under applicable plan documents. The additional RSUs are subject to the same vesting schedules as the original unvested RSUs to which they relate.
F2	Not applicable. Grant of Restricted Stock Units.

Content

On January 12, 2024, the reporting person filed a Form 4 reporting the acquisition of 138.186 additional restricted stock units ("RSUs") resulting from the upward adjustment of outstanding unvested RSUs by a factor of 1.018, in connection with the special cash dividend payable by the issuer on January 12, 2024. Instead, as reported in this amendment, the correct number of additional RSUs was 245.16. The adjustment in connection with the special dividend was required under applicable plan documents. The additional RSUs are subject to the same vesting schedules as the original unvested RSUs to which they relate.

Not applicable. Grant of Restricted Stock Units.