Costco (COST) EVP clarifies 4,127-share stake and RSU vesting

Rhea-AI Filing Summary

Costco Wholesale executive Sarah Catherine George updated her reported shareholdings. She now shows ownership of 4,127.836 shares of common stock, including 2,726.578 unvested Restricted Stock Units. These RSUs are scheduled to vest in four tranches from October 22, 2026 through October 22, 2029.

The vesting schedule covers 1,015.942 shares on October 22, 2026, 769.586 shares on October 22, 2027, 514.05 shares on October 22, 2028, and 427 shares on October 22, 2029. The amendment corrects an earlier administrative omission of these RSUs.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider George Sarah Catherine

Role Executive Vice President

Type	Security	Shares	Price	Value
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 4,127.836 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

Total common shares reported: 4,127.836 shares Unvested RSU shares: 2,726.578 shares RSUs vesting 2026: 1,015.942 shares +3 more

6 metrics

Total common shares reported 4,127.836 shares Common stock beneficially owned following reporting, as of March 2, 2026

Unvested RSU shares 2,726.578 shares Unvested Restricted Stock Units included in reported holdings

RSUs vesting 2026 1,015.942 shares Scheduled to vest on October 22, 2026

RSUs vesting 2027 769.586 shares Scheduled to vest on October 22, 2027

RSUs vesting 2028 514.05 shares Scheduled to vest on October 22, 2028

RSUs vesting 2029 427 shares Scheduled to vest on October 22, 2029

Key Terms

Restricted Stock Units ("RSUs"), unvested grants, Form 3, vesting schedule

4 terms

Restricted Stock Units ("RSUs") financial

"Includes 2,726.578 shares of common stock that are unvested grants of Restricted Stock Units ("RSUs")"

Restricted stock units (RSUs) are a company promise to give an employee shares of stock (or cash equivalent) in the future, but only after certain conditions—usually staying with the company for a set time or hitting performance goals—are met. Investors watch RSUs because when they vest they increase the number of shares outstanding and can lead insiders to sell shares, affecting share price, company dilution and the true cost of employee pay.

unvested grants financial

"Includes 2,726.578 shares of common stock that are unvested grants of Restricted Stock Units"

Form 3 regulatory

"were omitted from the reporting person's original Form 3, filed on March 11, 2026"

Form 3 is the initial public filing that officers, directors and large shareholders must submit to report their ownership of a company’s securities when they become insiders. It acts like an opening inventory sheet that gives investors a starting point to see who holds significant stakes and to spot later trades or potential conflicts of interest, helping assess insider confidence and transparency.

vesting schedule financial

"The vesting schedule for the RSUs is as follows"

A vesting schedule is a timeline that determines when someone gains full ownership of certain benefits, such as company stock or retirement contributions. Think of it like earning the right to own a gift gradually over time, rather than receiving it all at once. It matters to investors because it affects when they can fully access or sell these benefits, influencing their financial planning and decision-making.

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SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0104
Estimated average burden
hours per response:			0.5

1. Name and Address of Reporting Person^*

George Sarah Catherine

(Last) (First) (Middle)

999 LAKE DRIVE

(Street)

ISSAQUAH WASHINGTON 98027

(City) (State) (Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
03/02/2026

3. Issuer Name and Ticker or Trading Symbol
COSTCO WHOLESALE CORP /NEW [ COST ]

3a. Foreign Trading Symbol

5. If Amendment, Date of Original Filed (Month/Day/Year)
03/11/2026

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Executive Vice President

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	4,127.836(1)	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Includes 2,726.578 shares of common stock that are unvested grants of Restricted Stock Units ("RSUs") that due to an administrative error were omitted from the reporting person's original Form 3, filed on March 11, 2026. The vesting schedule for the RSUs is as follows: 1,015.942 shares will vest on October 22, 2026; 769.586 shares will vest on October 22, 2027; 514.05 shares will vest on October 22, 2028; and 427 shares will vest on October 22, 2029.

	/s/ Alejandro Torres, Attorney-in-Fact	05/15/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 3: SEC 1473 (03-26)

FAQ

What does the Costco (COST) Form 3/A amendment for Sarah Catherine George report?

The amendment reports that Executive Vice President Sarah Catherine George holds 4,127.836 Costco common shares, including 2,726.578 unvested RSUs. It corrects an administrative error that omitted these RSUs from her original Form 3 filed earlier.

How many Costco (COST) shares does Sarah Catherine George beneficially own after this amendment?

After the amendment, she is reported as beneficially owning 4,127.836 Costco common shares. This total includes 2,726.578 shares from unvested Restricted Stock Unit grants that were previously omitted due to an administrative reporting error.

How many unvested RSUs are included in Sarah Catherine George’s Costco (COST) holdings?

Her reported holdings include 2,726.578 unvested Restricted Stock Units. These RSUs represent Costco common stock that will be delivered over time as they vest according to the detailed schedule disclosed in the amendment.

What is the vesting schedule for Sarah Catherine George’s Costco (COST) RSUs?

The RSUs vest in four tranches: 1,015.942 shares on October 22, 2026; 769.586 shares on October 22, 2027; 514.05 shares on October 22, 2028; and 427 shares on October 22, 2029. Each date releases additional Costco common shares.

Why was a Form 3/A amendment filed for Costco (COST) executive Sarah Catherine George?

The amendment was filed to correct an administrative error in the original Form 3. That earlier filing accidentally omitted 2,726.578 unvested RSU shares from her reported Costco common stock holdings, which are now fully reflected.

Does the Costco (COST) Form 3/A show any new insider buying or selling?

The amendment does not show new buying or selling transactions. It updates the reported holdings to include 2,726.578 previously omitted unvested RSUs, bringing her total disclosed Costco common stock position to 4,127.836 shares.