Costco (COST)Executive Vice President sold ~$830K

~$830K

Approx. value · 900 sh @ $922.56

6,986.5

Holds after · shares reported

Traded

Mar 24, 2025

Filed

Mar 25, 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. Aug 7, 2024CongressDisclosed purchase of COST — reported range $1,001 - $15,000
2. Jan 28, 2025Congress · 1 personMembers of Congress: 3 sales
3. Feb 26, 2025CongressDisclosed partial sale of COST — reported range $1,001 - $15,000
4. Mar 3, 2025CongressDisclosed purchase of COST — reported range $1,001 - $15,000
5. Mar 11, 2025InsiderCEO sold ~$3.35M of COST shares in the open market
6. Mar 17, 2025CongressDisclosed purchase of COST — reported range $1,001 - $15,000
7. Mar 18, 2025InsiderOfficer sold ~$765K of COST shares in the open market
8. Mar 24, 2025 · this disclosureInsiderOfficer sold ~$830K of COST shares in the open market

What came next

1. Mar 27, 2025InsiderOfficer sold ~$1.03M of COST shares in the open market
2. Mar 27, 2025Congress · 1 personMembers of Congress: 3 sales
3. Mar 31, 2025CongressDisclosed partial sale of COST — reported range $15,001 - $50,000
4. Apr 17, 2025InsiderOfficer sold ~$3.92M of COST shares in the open market
5. Apr 21, 2025CongressDisclosed sale of COST — reported range $1,001 - $15,000
6. May 12, 2025CongressDisclosed sale of COST — reported range $100,001 - $250,000
7. Jun 6, 2025InsiderOfficer sold ~$2.03M of COST shares in the open market
8. Jun 9, 2025InsiderOfficer sold ~$3.01M of COST shares in the open market
9. Jun 18, 2025Insider · 1 personInsiders: 2 sales (~$536K)
10. Jul 14, 2025InsiderOfficer sold ~$3.9M of COST shares in the open market

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)Oct 24, 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.