COSTNasdaqSEC EDGAREDGAR

COSTCO WHOLESALE CORP /NEW

Retail-Variety Stores·ISSAQUAH, WA·FY end 08/30·CIK 909832

Overview Financials Compensation Governance Insiders Filings

Net 180d

-$4.6M

0 buys / 4 sales

Open-market buys

0 transactions

Open-market sales

$4.6M

4 transactions

Cluster windows

0 buy / 1 sell

Insider transaction timeline

2-year window · 45 buys · 135 sales · dot size = transaction value

AcquisitionsSalesCluster window (≥2 sales / month)

Form 4 transactions

Showing 30 of 180

Date	Insider	Type	Shares	Value
2026-10-22	POLIT JAVIERExecutive Vice President	Tax withhold	549	-$559.4K
2026-10-22	POLIT JAVIERExecutive Vice President	Tax withhold	337	-$343.1K
2026-10-22	POLIT JAVIERExecutive Vice President	Tax withhold	294	-$299.7K
2026-10-22	POLIT JAVIERExecutive Vice President	Tax withhold	391	-$398.0K
2026-10-22	POLIT JAVIERExecutive Vice President	Award	4,129	—
2026-10-22	Self Adam WebbExecutive Vice President	Tax withhold	41	-$41.3K
2026-10-22	Self Adam WebbExecutive Vice President	Tax withhold	36	-$36.7K
2026-10-22	Self Adam WebbExecutive Vice President	Tax withhold	57	-$58.4K
2026-10-22	Self Adam WebbExecutive Vice President	Tax withhold	64	-$65.4K
2026-10-22	Self Adam WebbExecutive Vice President	Tax withhold	62	-$62.8K
2026-10-22	Sullivan John ChristopherExecutive VP	Tax withhold	836	-$851.0K
2026-10-22	Sullivan John ChristopherExecutive VP	Tax withhold	732	-$745.6K
2026-10-22	Sullivan John ChristopherExecutive VP	Tax withhold	975	-$992.8K
2026-10-22	Sullivan John ChristopherExecutive VP	Tax withhold	647	-$659.1K
2026-10-22	Sullivan John ChristopherExecutive VP	Tax withhold	573	-$583.3K
2026-10-22	Sullivan John ChristopherExecutive VP	Award	4,552	—
2026-10-22	Adamo ClaudineExecutive Vice President	Tax withhold	109	-$110.6K
2026-10-22	Adamo ClaudineExecutive Vice President	Tax withhold	111	-$113.0K
2026-10-22	Adamo ClaudineExecutive Vice President	Tax withhold	177	-$180.3K
2026-10-22	Adamo ClaudineExecutive Vice President	Tax withhold	198	-$201.9K
2026-10-22	Adamo ClaudineExecutive Vice President	Tax withhold	97	-$98.7K
2026-10-22	Barbre Tiffany Marie	Tax withhold	166	-$169.5K
2026-10-22	Barbre Tiffany Marie	Tax withhold	85	-$86.1K
2026-10-22	Barbre Tiffany Marie	Tax withhold	102	-$103.4K
2026-10-22	Barbre Tiffany Marie	Tax withhold	94	-$95.7K
2026-10-22	Barbre Tiffany Marie	Tax withhold	90	-$91.9K
2026-10-22	Barbre Tiffany Marie	Award	1,965	—
2026-10-22	DECKER SUSAN L	Award	266	—
2026-10-22	DENMAN KENNETH D	Award	266	—
2026-10-22	Foulkes Helena	Award	266	—