Costco (COST): Officer filed to sell ~$2.74M

~$2.74M

planned to sell · 2,500 shares, around Nov 12, 2026

Planned for

Nov 12, 2026

Notice filed

Nov 12, 2026

The story around this disclosure

Every dated public record OQRO holds about the company from 60 days before to 120 days after, oldest first. It shows what was going on; none of it is a stated reason for the trade.

1. Sep 18, 2026CongressDisclosed sale of COST — reported range $1,001 - $15,000
2. Sep 24, 2026Company filing · Form 8-K · ResultsReported its results
3. Sep 29, 2026Insider · 2 peopleInsiders: 2 sales (~$2.7M)
4. Oct 2, 2026CongressDisclosed sale of COST — reported range $250,001 - $500,000
5. Oct 13, 2026Company filing · Form 8-K · Executive changeChanged a top executive or board member“On October 13, 2026, the Compensation Committee of the Board of Directors approved the fiscal 2027 criteria for bonuses to executive officers, with the Nominating and Governance Committee of the Board also approving the environmental and social performance criteria.”
6. Oct 13, 2026InsiderOfficer sold ~$1.05M of COST shares in the open market
7. Oct 13, 2026CongressDisclosed sale of COST — reported range $100,001 - $250,000
8. Nov 10, 2026Company filing · Form 8-K · Executive change, Other newsChanged a top executive or board member, and reported other company news“On November 7, 2026, Helena B. Foulkes notified the Board of Directors (the “Board”) of Costco Wholesale Corporation (the “Company”) of her decision to resign from the Board and all committees of the Board of which she is a member, effective November 7, 2026.”
9. Nov 11, 2026InsiderOfficer sold ~$976K of COST shares in the open market
10. Nov 12, 2026InsiderOfficer sold ~$829K of COST shares in the open market

How to read SEC Form 144

Form 144 is a notice that a company insider plans to sell shares. It is filed when the sell order is placed, so it announces a planned sale and does not prove that the sale took place.

Full guide: What is an SEC Form 144?

What else is on file for Costco

For Costco, OQRO holds 11 insider filings (SEC Form 4 or Form 144), 3 Congress trade reports and 4 fund holdings reports (13F) dated in the last 90 days.

These are records OQRO holds, counted by their date, not a measure of how much trading took place. Routine paperwork such as option exercises and tax withholding is left out. Everything for the company is on its COST page.

How this filing works

• SEC Form 144
• Rule 10b5-1 trading plans

Other disclosures at Costco

• SEC Form 4Nov 13, 2026
• SEC Form 144Nov 12, 2026
• SEC Form 144Nov 12, 2026
• SEC Form 4Nov 12, 2026
• House Clerk periodic transaction reportOct 27, 2026
• House Clerk periodic transaction reportOct 27, 2026

Everything OQRO holds on this company is on its COST page.