Company / CIK 0000909832
COSTCO WHOLESALE CORP /NEW
COST · 9 insiders on file
COSTCO WHOLESALE CORP /NEW (COST) has 9 insiders on file who disclosed 17 transactions in the last 12 months (0 open-market buys, 9 sales, about $10.7M at reported prices). No federal award to a recipient with exactly this name appears in the last 180 days; no lobbying filing names it as client this year.
Insiders
| Name | Role | Transactions | Last filed |
|---|---|---|---|
| Wilcox William Richard | Executive Vice President | 2 | September 14, 2026 |
| Rubanenko Yoram | Executive Vice President | 2 | September 14, 2026 |
| Riel Pierre | Executive Vice President | 2 | September 14, 2026 |
| Klauer James C | Executive Vice President | 2 | September 14, 2026 |
| Jones Teresa A. | Executive Vice President | 2 | September 14, 2026 |
| Frates Caton | Executive Vice President | 3 | September 14, 2026 |
| Adamo Claudine | Executive Vice President | 2 | September 14, 2026 |
| RAIKES JEFFREY S | Director | 1 | July 14, 2026 |
| DENMAN KENNETH D | Director | 1 | June 25, 2026 |
Insider transactions
| Filer | Security | Side | Trade date | Disclosed | Lag | Shares | Price | Value | Flags | Source |
|---|---|---|---|---|---|---|---|---|---|---|
| Adamo Claudine | COST | Sell F | September 10, 2026 | September 14, 2026 | 4d | 917 | $902 | $827K | Form 4 ↗ | |
| Adamo Claudine | COST | Other A | September 10, 2026 | September 14, 2026 | 4d | 4,129 | — | — | Form 4 ↗ | |
| Frates Caton | COST | Sell F | September 10, 2026 | September 14, 2026 | 4d | 1,654 | $902 | $1.5M | Form 4 ↗ | |
| Frates Caton | COST | Other A | September 10, 2026 | September 14, 2026 | 4d | 4,552 | — | — | Form 4 ↗ | |
| Jones Teresa A. | COST | Sell F | September 10, 2026 | September 14, 2026 | 4d | 1,459 | $902 | $1.3M | Form 4 ↗ | |
| Jones Teresa A. | COST | Other A | September 10, 2026 | September 14, 2026 | 4d | 4,129 | — | — | Form 4 ↗ | |
| Klauer James C | COST | Sell F | September 10, 2026 | September 14, 2026 | 4d | 936 | $902 | $845K | Form 4 ↗ | |
| Klauer James C | COST | Other A | September 10, 2026 | September 14, 2026 | 4d | 4,129 | — | — | Form 4 ↗ | |
| Riel Pierre | COST | Sell F | September 10, 2026 | September 14, 2026 | 4d | 1,562 | $902 | $1.4M | Form 4 ↗ | |
| Riel Pierre | COST | Other A | September 10, 2026 | September 14, 2026 | 4d | 4,552 | — | — | Form 4 ↗ | |
| Rubanenko Yoram | COST | Sell F | September 10, 2026 | September 14, 2026 | 4d | 1,696 | $902 | $1.5M | Form 4 ↗ | |
| Rubanenko Yoram | COST | Other A | September 10, 2026 | September 14, 2026 | 4d | 4,129 | — | — | Form 4 ↗ | |
| Wilcox William Richard | COST | Sell F | September 10, 2026 | September 14, 2026 | 4d | 1,935 | $902 | $1.7M | Form 4 ↗ | |
| Wilcox William Richard | COST | Other A | September 10, 2026 | September 14, 2026 | 4d | 4,129 | — | — | Form 4 ↗ | |
| RAIKES JEFFREY S | COST | Other G | July 10, 2026 | July 14, 2026 | 4d | 5,249 | — | — | Form 4 ↗ | |
| DENMAN KENNETH D | COST | Sell S | June 23, 2026 | June 25, 2026 | 2d | 885 | $957 | $847K | Form 4 ↗ | |
| Frates Caton | COST | Sell S | April 1, 2026 | April 1, 2026 | 0d | 700 | $993 | $695K | Form 4 ↗ |
Federal contracts (USAspending, last 180 days)
No award action to a recipient named exactly "COSTCO WHOLESALE CORP /NEW" in the last 180 days. Subsidiaries and differently-spelled recipients are not matched — search contracts.
Lobbying (Senate LDA, as client)
No LDA filing names "COSTCO WHOLESALE CORP /NEW" as the client in the last two years. Filings under a subsidiary or trade-association name are not matched — search lobbying.
Sources and method
Insiders and their transactions come from SEC EDGAR Form 4 filings for this issuer. Contracts and lobbying are matched by exact normalized name (suffixes like Inc./Corp. ignored) to USAspending recipients and LDA clients — a conservative match that misses subsidiaries on purpose. See methodology and corrections.
Not investment advice. Public records shown as filed; no recommendation is made or implied.