Form 4
Self Adam Webb
Officer (Executive Vice President)
- Filed
- 10/27/26
- Trade dates
- 10/22/26
- Period of report
- 10/22/26
- 10b5-1 box
- Not checked
- Accession number
- 0000909832-26-000129
Table I: shares of stock
| Line | Security | Trade date | Shares | Price | Value | Owned after | Ownership | Notes |
|---|---|---|---|---|---|---|---|---|
| Withheld for taxesLine 1 · code F | Common Stock | 10/22/26 | 61.663Disposed | $1,018.21 | $62,785.88 | 3,467.689 | Direct | F1 |
| Withheld for taxesLine 2 · code F | Common Stock | 10/22/26 | 64.211Disposed | $1,018.21 | $65,380.28 | 3,403.478 | Direct | F1 |
| Withheld for taxesLine 3 · code F | Common Stock | 10/22/26 | 57.332Disposed | $1,018.21 | $58,376.02 | 3,346.146 | Direct | F1 |
| Withheld for taxesLine 4 · code F | Common Stock | 10/22/26 | 36.044Disposed | $1,018.21 | $36,700.36 | 3,310.102 | Direct | F1 |
| Withheld for taxesLine 5 · code F | Common Stock | 10/22/26 | 40.517Disposed | $1,018.21 | $41,254.81 | 3,269.585 | Direct | F1 |
Footnotes
- F1
This transaction is a withholding by the Company for taxes in connection with the vesting of previously granted restricted stock units. The price represents the closing market price of Costco common stock on Nasdaq on October 22, 2026.