| 2023-12-19 | Sale | Costco Wholesale Corporation COST | Executive VP and CFO | 1,111.78 0.0003% | $680.21 | $756,248 | +7.44% | |
| 2023-11-08 | Sale | Costco Wholesale Corporation COST | Executive VP and CFO | 2,000 0.0005% | $566.09 | $1.13M | +27.16% | |
| 2023-10-10 | Sale | Costco Wholesale Corporation COST | Executive VP and CFO | 2,000 0.0005% | $565.57 | $1.13M | +27.04% | |
| 2023-06-13 | Sale | Costco Wholesale Corporation COST | Executive VP and CFO | 1,500 0.0003% | $522.02 | $783,038 | +20.99% | |
| 2023-03-14 | Sale | Costco Wholesale Corporation COST | Executive VP and CFO | 2,068 0.0005% | $483.32 | $999,506 | +16.13% | |
| 2022-10-25 | Sale | Costco Wholesale Corporation COST | Executive VP and CFO | 1,500 0.0003% | $477.65 | $716,470 | +2.34% | |
| 2022-10-07 | Sale | Costco Wholesale Corporation COST | Executive VP and CFO | 2,000 0.0005% | $471.12 | $942,246 | +7.84% | |
| 2022-07-14 | Sale | Costco Wholesale Corporation COST | Executive VP and CFO | 1,000 0.0002% | $505.60 | $505,597 | -1.82% | |
| 2021-12-15 | Sale | Costco Wholesale Corporation COST | Executive VP and CFO | 2,218 0.0005% | $554.09 | $1.23M | -8.5% | |
| 2021-04-29 | Sale | Costco Wholesale Corporation COST | Executive VP and CFO | 2,230 0.0005% | $372.06 | $829,684 | +29.71% | |
| 2020-12-30 | Sale | Costco Wholesale Corporation COST | Executive VP and CFO | 1,000 0.0002% | $374.49 | $374,494 | +6.95% | |
| 2020-08-21 | Sale | Costco Wholesale Corporation COST | Executive VP and CFO | 1,754 0.0004% | $345.00 | $605,131 | +10.14% | |
| 2020-07-10 | Sale | Costco Wholesale Corporation COST | Executive VP and CFO | 2,730 0.0006% | $325.07 | $887,438 | +14.34% | |
| 2020-03-19 | Sale | Costco Wholesale Corporation COST | Executive VP and CFO | 1,448 0.0003% | $306.51 | $443,833 | +12.24% | |
| 2019-11-13 | Sale | Costco Wholesale Corporation COST | Executive VP and CFO | 1,984 0.0004% | $302.80 | $600,763 | +2.36% | |
| 2019-06-20 | Sale | Costco Wholesale Corporation COST | Executive VP and CFO | 6,000 0.0014% | $266.39 | $1.6M | +11.72% | |
| 2019-03-12 | Sale | Costco Wholesale Corporation COST | Executive VP and CFO | 4,000 0.0009% | $231.40 | $925,607 | +24.35% | |
| 2019-03-11 | Sale | Costco Wholesale Corporation COST | Executive VP and CFO | 4,376 0.001% | $229.61 | $1M | +26.12% | |
| 2018-10-30 | Sale | Costco Wholesale Corporation COST | Executive VP and CFO | 8,326 0.0019% | $227.23 | $1.89M | +8.19% | |
| 2018-06-15 | Sale | Costco Wholesale Corporation COST | Executive VP and CFO | 4,812 0.0011% | $207.11 | $996,630 | +10.32% |