COST Filing
4Filing Date: Mar 11, 2026
COSTCO WHOLESALE CORP /NEW (COST) · Insider Trading (Form 4) SEC Filing
Statement of Changes in Beneficial Ownership
descriptionView SEC Filing
ACC: 0000909832-26-000028open_in_new
Total Value$732.2K
Trades1
Insiders1
Transaction Details
Adamo Claudine
Executive Vice President·Direct
Sell · Dispose
Common Stock
Shares-730
Price$1003.02
Total Value$732.2K
Shares Owned After6.12K
Transaction DateMar 9, 2026
Post-Transaction Holdings
Adamo Claudine
| Security | Shares | Change |
|---|---|---|
| Common Stock | 6.12K | -730 (-10.66%) |
Original SEC Filing Textexpand_more
=== SEC Form 4 — Statement of Changes in Beneficial Ownership ===
Document Type: 4
Period of Report: 2026-03-09
10b5-1 Pre-arranged Plan: No
--- Issuer ---
Name: COSTCO WHOLESALE CORP /NEW (COST)
CIK: 0000909832
--- Reporting Owner ---
Name: Adamo Claudine
CIK: 0001916124
Role: Officer (Executive Vice President)
--- Non-Derivative Transactions ---
[Transaction #1]
Security: Common Stock
Date: 2026-03-09 | Code: S (Open market sale)
Shares: -730 | Price: $1,003.02
Total Value: $732,205.33
Shares Owned After: 6,121.195 | Ownership: D (Direct)
--- Signature ---
/s/ /s/ Alejandro Torres, Attorney-in-Fact (2026-03-11)