| 2024-02-09 | Sale | Costco Wholesale Corporation COST | director | 1,442 0.0003% | $723.48 | $1.04M | +2.39% | |
| 2023-06-28 | Sale | Costco Wholesale Corporation COST | director | 1,565 0.0004% | $533.00 | $834,145 | +24.18% | |
| 2023-06-07 | Sale | Costco Wholesale Corporation COST | director | 3,971 0.0009% | $514.14 | $2.04M | +19.51% | |
| 2022-12-12 | Sale | Costco Wholesale Corporation COST | director | 952 0.0002% | $483.00 | $459,816 | +7.34% | |
| 2021-01-27 | Sale | Costco Wholesale Corporation COST | director | 694 0.0002% | $363.35 | $252,165 | +20.05% | |
| 2021-01-13 | Sale | Costco Wholesale Corporation COST | director | 1,199 0.0003% | $366.48 | $439,414 | +12.84% | |
| 2020-12-30 | Sale | Costco Wholesale Corporation COST | director | 861 0.0002% | $375.75 | $323,521 | +6.95% | |
| 2020-12-21 | Sale | Costco Wholesale Corporation COST | director | 1,000 0.0002% | $362.59 | $362,590 | +7.88% | |
| 2020-09-28 | Sale | Costco Wholesale Corporation COST | director | 2,500 0.0006% | $347.90 | $869,750 | +9.85% | |
| 2020-08-14 | Sale | Costco Wholesale Corporation COST | director | 1,250 0.0003% | $338.00 | $422,500 | +12.21% | |
| 2020-08-13 | Sale | Costco Wholesale Corporation COST | director | 1,250 0.0003% | $335.83 | $419,794 | +12.4% | |
| 2020-07-13 | Sale | Costco Wholesale Corporation COST | director | 2,000 0.0005% | $326.60 | $653,200 | +15.58% | |
| 2020-07-02 | Sale | Costco Wholesale Corporation COST | director | 685 0.0002% | $308.50 | $211,323 | +21.8% | |
| 2020-07-01 | Sale | Costco Wholesale Corporation COST | director | 1,155 0.0003% | $302.57 | $349,473 | +22.08% | |
| 2020-06-05 | Sale | Costco Wholesale Corporation COST | director | 1,995 0.0005% | $312.00 | $622,440 | +17.4% | |
| 2020-04-20 | Sale | Costco Wholesale Corporation COST | director | 1,000 0.0002% | $314.83 | $314,826 | +12.09% | |
| 2020-03-20 | Sale | Costco Wholesale Corporation COST | director | 1,000 0.0002% | $297.00 | $297,000 | +17.99% | |
| 2020-01-14 | Sale | Costco Wholesale Corporation COST | director | 3,850 0.0009% | $300.41 | $1.16M | +9.27% | |
| 2019-11-15 | Sale | Costco Wholesale Corporation COST | director | 1,703 0.0004% | $303.01 | $516,032 | +2.11% | |
| 2019-10-18 | Sale | Costco Wholesale Corporation COST | director | 1,228 0.0003% | $303.05 | $372,145 | +1.62% |