SEC INSIDER TRANSACTIONS

COSTCO WHOLESALE CORP /NEW (COST) Insider Transactions

Explore official ownership filings, with every record linked to its source.

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COST · COSTCO WHOLESALE CORP /NEW

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Roles: director,officer,ten_percent_owner,otherOwner nameOfficer titleOwnership: D, I, unknownoriginal or amendedTransaction fromTransaction throughFiled fromFiled throughMinimum quantityMaximum quantityMinimum priceMaximum priceMinimum calculated valueMaximum calculated valueResults per page (1–100)

OR within codes/roles; AND between categories. Roles apply to buyers and sellers. Owner predicates match the same owner. Missing values fail numeric/date filters. Value is quantity × reported price for non-derivative rows only; derivative values are unknown. Amendments stay separate; joint owners do not duplicate rows.

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Stale snapshot · Covered: filings 2026-10-15 to 2026-11-13 · 19 filings · fetched 2026-11-13T17:01:20Z

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Recent reported activity

0purchase rows on this page

0sale rows on this page

56matching filing rows

Purchases and sales count original non-derivative P and S rows. Awards, gifts, exercises, derivatives and amendments are shown separately and are not described as market purchases.

Transaction / filed	Reporting owner(s)	Code / security	Quantity	Price as filed	Ownership	Source
2026-10-22Filed 2026-10-26	JEWELL SARAH MR SALLYDirector Filing context Reported filing row; may be amended. Do not sum filings blindly. F1 Grant of Restricted Stock Units. Vests one-third on October 22, 2027, and one-third annually on October 22 for the following two years. F2 Not applicable. Grant of Restricted Stock Units. References: F1, F2	A Award / grantCommon Stock · Non-derivative	266A	0	Direct	Form 4 ↗0000909832-26-000117
2026-10-22Filed 2026-10-26	Klauer James COfficer · Executive Vice President Filing context Reported filing row; may be amended. Do not sum filings blindly. 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. References: F1	F WithholdingCommon Stock · Non-derivative	541.85D	1,018.21	Direct	Form 4 ↗0000909832-26-000119
2026-10-22Filed 2026-10-26	Klauer James COfficer · Executive Vice President Filing context Reported filing row; may be amended. Do not sum filings blindly. 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. References: F1	F WithholdingCommon Stock · Non-derivative	442.688D	1,018.21	Direct	Form 4 ↗0000909832-26-000119
2026-10-22Filed 2026-10-26	Klauer James COfficer · Executive Vice President Filing context Reported filing row; may be amended. Do not sum filings blindly. 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. References: F1	F WithholdingCommon Stock · Non-derivative	529.972D	1,018.21	Direct	Form 4 ↗0000909832-26-000119
2026-10-22Filed 2026-10-26	Klauer James COfficer · Executive Vice President Filing context Reported filing row; may be amended. Do not sum filings blindly. 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. References: F1	F WithholdingCommon Stock · Non-derivative	396.177D	1,018.21	Direct	Form 4 ↗0000909832-26-000119
2026-10-22Filed 2026-10-26	Klauer James COfficer · Executive Vice President Filing context Reported filing row; may be amended. Do not sum filings blindly. 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. References: F1	F WithholdingCommon Stock · Non-derivative	190.678D	1,018.21	Direct	Form 4 ↗0000909832-26-000119

Imported instruments only. Joint owners do not multiply transactions. Amendments are separate filing rows, not additional trades. No aggregate trade totals are implied.