Insider txns (12m)
17
Stock / equity
COST COSTCO WHOLESALE CORP /NEW
Company profile, contracts and lobbying: COSTCO WHOLESALE CORP /NEW
COST (COSTCO WHOLESALE CORP /NEW) has 17 disclosed insider transactions from 9 insiders in the last 12 months (0 open-market buys, 9 sales, about $10.7M at reported prices) and 0 congressional trades from 0 members of Congress. The most recent disclosure was filed September 14, 2026.
Open-market buys / sales
0 / 9
Congress trades (12m)
0
Distinct filers (12m)
9
Insider transactions
| Filer | Side | Trade date | Disclosed | Lag | Shares | Price | Value | Flags | Source |
|---|---|---|---|---|---|---|---|---|---|
| Adamo Claudine | Sell F | September 10, 2026 | September 14, 2026 | 4d | 917 | $902 | $827K | Form 4 ↗ | |
| Adamo Claudine | Other A | September 10, 2026 | September 14, 2026 | 4d | 4,129 | — | — | Form 4 ↗ | |
| Frates Caton | Sell F | September 10, 2026 | September 14, 2026 | 4d | 1,654 | $902 | $1.5M | Form 4 ↗ | |
| Frates Caton | Other A | September 10, 2026 | September 14, 2026 | 4d | 4,552 | — | — | Form 4 ↗ | |
| Jones Teresa A. | Sell F | September 10, 2026 | September 14, 2026 | 4d | 1,459 | $902 | $1.3M | Form 4 ↗ | |
| Jones Teresa A. | Other A | September 10, 2026 | September 14, 2026 | 4d | 4,129 | — | — | Form 4 ↗ | |
| Klauer James C | Sell F | September 10, 2026 | September 14, 2026 | 4d | 936 | $902 | $845K | Form 4 ↗ | |
| Klauer James C | Other A | September 10, 2026 | September 14, 2026 | 4d | 4,129 | — | — | Form 4 ↗ | |
| Riel Pierre | Sell F | September 10, 2026 | September 14, 2026 | 4d | 1,562 | $902 | $1.4M | Form 4 ↗ | |
| Riel Pierre | Other A | September 10, 2026 | September 14, 2026 | 4d | 4,552 | — | — | Form 4 ↗ | |
| Rubanenko Yoram | Sell F | September 10, 2026 | September 14, 2026 | 4d | 1,696 | $902 | $1.5M | Form 4 ↗ | |
| Rubanenko Yoram | Other A | September 10, 2026 | September 14, 2026 | 4d | 4,129 | — | — | Form 4 ↗ | |
| Wilcox William Richard | Sell F | September 10, 2026 | September 14, 2026 | 4d | 1,935 | $902 | $1.7M | Form 4 ↗ | |
| Wilcox William Richard | Other A | September 10, 2026 | September 14, 2026 | 4d | 4,129 | — | — | Form 4 ↗ | |
| RAIKES JEFFREY S | Other G | July 10, 2026 | July 14, 2026 | 4d | 5,249 | — | — | Form 4 ↗ | |
| DENMAN KENNETH D | Sell S | June 23, 2026 | June 25, 2026 | 2d | 885 | $957 | $847K | Form 4 ↗ | |
| Frates Caton | Sell S | April 1, 2026 | April 1, 2026 | 0d | 700 | $993 | $695K | Form 4 ↗ |
Congressional trades
No member of Congress has disclosed a trade in this ticker in the filings we have parsed (House filings since the job went live; Senate pending).
Who is filing
- Adamo Claudine — 2 transactions
- Frates Caton — 3 transactions
- Jones Teresa A. — 2 transactions
- Klauer James C — 2 transactions
- Riel Pierre — 2 transactions
- Rubanenko Yoram — 2 transactions
- Wilcox William Richard — 2 transactions
- RAIKES JEFFREY S — 1 transaction
- DENMAN KENNETH D — 1 transaction
Sources and method
Insider rows are Form 4 filings for this issuer from SEC EDGAR; congressional rows are periodic transaction reports parsed from the House Clerk (and Senate eFD when live). Values use the reported price for Form 4 and the disclosed range for Congress. See methodology and corrections.
Not investment advice. Disclosures are shown as filed and may lag the trade or be amended. No recommendation is made or implied.