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Form 4 · COST

Costco Executive Vice President Claudine Adamo reports about 692 shares withheld for taxes

Claudine Adamo, Costco's Executive Vice President, filed a Form 4 on Oct 26, 2026 at 6:13 PM ET reporting transactions on Oct 22, 2026.

The filing reports about 692 shares withheld to pay the exercise price or tax (code F).

After these transactions, the filing lists about 6,442 shares held directly.

Effect on holdings

Taken together, the rows reported here lowered Claudine Adamo's directly held shares by 9.7%, from about 7,134 to about 6,442.

Reporting person

Transactions as reported

DateCodeSecuritySharesPriceAcquired or disposedHeld afterOwnership
2026-10-22FCommon Stock97$1,018.21Disposed7,037Direct
2026-10-22FCommon Stock198$1,018.21Disposed6,838Direct
2026-10-22FCommon Stock177$1,018.21Disposed6,661Direct
2026-10-22FCommon Stock111$1,018.21Disposed6,550Direct
2026-10-22FCommon Stock109$1,018.21Disposed6,442Direct

Codes: P purchase, S sale, A grant or award, M/X/C exercise or conversion, F shares withheld for taxes or the exercise price, G gift. Prices are as reported; some are weighted averages of several trades.

Source

Costco company file → · More Costco filings

Disclosures

Editor holdings in COST
The editor holds no position in Costco (COST). As of Oct 25, 2026.
Last updated
Oct 27, 2026

A summary of a public filing for general education, the same for every reader. Not a recommendation to buy, sell or hold COST.