Tiffany Marie Barbre sold Costco Wholesale Corp ($COST) shares once on the open market in the last year, totaling $1.16 million. Her most recent sale occurred on October 24, 2025. This places her 4,582nd among 11,678 individual insiders by sale value, below the average of $8.6 million across about 6.4 transactions per insider. She made no open market purchases during this period.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct. 22, 2025 | COSTCO WHOLESALE CORP /NEW | $COST | Barbre Tiffany Marie | Other | A | Common Stock | 2118 | $0.00 | 6,939.3288 | 444,803,000 | 43.93% | 0.00% |
| Oct. 22, 2025 | COSTCO WHOLESALE CORP /NEW | $COST | Barbre Tiffany Marie | Other | F | Common Stock | 114 | $944.68 | 6,825.7988 | 444,803,000 | 1.64% | 0.00% |
| Oct. 22, 2025 | COSTCO WHOLESALE CORP /NEW | $COST | Barbre Tiffany Marie | Other | F | Common Stock | 90 | $944.68 | 6,735.5688 | 444,803,000 | 1.32% | 0.00% |
| Oct. 22, 2025 | COSTCO WHOLESALE CORP /NEW | $COST | Barbre Tiffany Marie | Other | F | Common Stock | 119 | $944.68 | 6,617.0088 | 444,803,000 | 1.76% | 0.00% |
| Oct. 22, 2025 | COSTCO WHOLESALE CORP /NEW | $COST | Barbre Tiffany Marie | Other | F | Common Stock | 135 | $944.68 | 6,481.6088 | 444,803,000 | 2.05% | 0.00% |
| Oct. 22, 2025 | COSTCO WHOLESALE CORP /NEW | $COST | Barbre Tiffany Marie | Other | F | Common Stock | 85 | $944.68 | 6,397.0088 | 444,803,000 | 1.31% | 0.00% |
| Oct. 24, 2025 | COSTCO WHOLESALE CORP /NEW | $COST | Barbre Tiffany Marie | Other | S | Common Stock | 1239 | $934.62 | 5,157.6258 | 444,803,000 | 19.37% | 0.00% |