| 2023-03-06 | Sale | Costco Wholesale Corporation COST | President and COO | 4,100 0.0009% | $476.29 | $1.95M | +15.5% | |
| 2022-01-27 | Sale | Costco Wholesale Corporation COST | Executive VP | 3,318 0.0008% | $492.45 | $1.63M | +4.99% | |
| 2021-07-12 | Sale | Costco Wholesale Corporation COST | Executive VP | 4,000 0.0009% | $409.40 | $1.64M | +22.04% | |
| 2021-03-22 | Sale | Costco Wholesale Corporation COST | Executive VP | 4,300 0.001% | $334.30 | $1.44M | +36.35% | |
| 2020-06-19 | Sale | Costco Wholesale Corporation COST | Executive VP | 4,000 0.0009% | $300.95 | $1.2M | +22.75% | |
| 2019-12-17 | Sale | Costco Wholesale Corporation COST | Executive VP | 6,000 0.0014% | $295.22 | $1.77M | +6.85% | |
| 2019-06-24 | Sale | Costco Wholesale Corporation COST | Executive VP | 7,400 0.0017% | $267.25 | $1.98M | +12.22% | |
| 2018-10-15 | Sale | Costco Wholesale Corporation COST | Executive VP | 13,200 0.003% | $225.88 | $2.98M | +8.65% | |
| 2018-01-08 | Sale | Costco Wholesale Corporation COST | Executive VP | 10,400 0.0024% | $187.98 | $1.96M | +10.72% | |
| 2017-01-11 | Sale | Costco Wholesale Corporation COST | Executive VP | 6,360 0.0015% | $161.73 | $1.03M | +5.52% |