Costco (COST)Executive Vice President sold ~$2.53M

~$2.53M

Approx. value · 2,700 sh @ $935.68

6,851.2

Holds after · shares reported

Traded

Oct 24, 2025

Filed

Oct 24, 2025

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. Mar 15, 2023CongressDisclosed purchase of COST — reported range $1,001 - $15,000
2. Oct 29, 2024CongressDisclosed purchase of COST — reported range $1,001 - $15,000
3. Sep 23, 2025Congress · 1 personMembers of Congress: 2 sales
4. Sep 25, 2025Company filing · Form 8-K · ResultsReported its results
5. Sep 29, 2025InsiderOfficer sold ~$1.4M of COST shares in the open market
6. Oct 9, 2025CongressDisclosed purchase of COST — reported range $1,001 - $15,000
7. Oct 14, 2025Company filing · Form 8-K · Executive changeChanged a top executive or board member“On October 14, 2025, the Compensation Committee of the Board of Directors approved the fiscal 2026 criteria for bonuses to executive officers, with the Nominating and Governance Committee of the Board also approving the environmental and social performance criteria.”
8. Oct 17, 2025Congress · 2 peopleMembers of Congress: 1 purchase, 1 sale
9. Oct 24, 2025 · this disclosureInsiderOfficer sold ~$2.53M of COST shares in the open market

What came next

1. Oct 24, 2025InsiderInsider sold ~$1.16M of COST shares in the open market
2. Nov 5, 2025CongressDisclosed purchase of COST — reported range $1,001 - $15,000
3. Nov 7, 2025FDARecall: Costco Item# 11444 Kirkland Signature Chicken Sandwich with Caesar Salad, refrigerated, packaged in clear plastic clamshell container. The net weight varies as…
4. Nov 7, 2025FDARecall: Costco Item# 19927 Kirkland Signature Caesar Salad, refrigerated, packaged in clear plastic clamshell container. The net weight varies as it is sold by weight.…
5. Nov 7, 2025InsiderOfficer sold ~$2.23M of COST shares in the open market
6. Dec 11, 2025Company filing · Form 8-K · ResultsReported its results
7. Dec 24, 2025CongressDisclosed partial sale of COST — reported range $1,001 - $15,000
8. Dec 29, 2025InsiderOfficer sold ~$1.78M of COST shares in the open market
9. Dec 29, 2025CongressDisclosed purchase of COST — reported range $15,001 - $50,000
10. Dec 30, 2025InsiderOfficer sold ~$482K of COST shares in the open market
11. Jan 9, 2026InsiderOfficer sold ~$1.37M of COST shares in the open market
12. Jan 14, 2026InsiderOfficer sold ~$1.41M of COST shares in the open market
13. Jan 16, 2026InsiderDirector sold ~$437K of COST shares in the open market
14. Jan 21, 2026InsiderOfficer sold ~$838K of COST shares in the open market
15. Jan 30, 2026CongressDisclosed purchase of COST — reported range $1,001 - $15,000
16. Jan 31, 2026FDARecall: Kirkland Signature Costco item #1181272 Mini Beignets filled with Caramel 22CT. UPC 000011 812722. Product is packaged in a clear clamshell container. ALLERGEN…

How to read SEC Form 4

Form 4 is the filing that officers, directors and owners of more than 10% of a US-listed company must send to the SEC within two business days after they buy, sell or otherwise change their holding of the company's stock.

Full guide: What is an SEC Form 4?

What else is on file for Costco

For Costco, OQRO holds 4 insider filings (SEC Form 4 or Form 144), 3 Congress trade reports and 129 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.

Other recent filings by Claudine Adamo, Executive Vice President

• SEC Form 4 at Costco (COST)Sep 30, 2026
• SEC Form 4 at Costco (COST)Mar 11, 2026
• SEC Form 4 at Costco (COST)Mar 25, 2025
• SEC Form 4 at Costco (COST)Oct 2, 2024

The full history of Claudine Adamo, Executive Vice President is on the profile page.

How this filing works

• SEC Form 4
• Open-market purchase
• Rule 10b5-1 trading plans

Other disclosures at Costco

• SEC Form 4Sep 30, 2026
• SEC Form 4Sep 30, 2026
• SEC Form 144Sep 29, 2026
• SEC Form 144Sep 29, 2026
• SEC Form 13F-HRAug 26, 2026
• SEC Form 13F-HRAug 25, 2026

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