| 2022-03-29 | Sale | Costco Wholesale Corporation COST | Executive VP | 4,000 0.0009% | $566.29 | $2.27M | -13.02% | |
| 2021-06-28 | Sale | Costco Wholesale Corporation COST | Executive VP | 4,000 0.0009% | $396.14 | $1.58M | +24.49% | |
| 2020-06-11 | Sale | Costco Wholesale Corporation COST | Executive VP | 6,000 0.0014% | $308.05 | $1.85M | +21.98% | |
| 2019-03-13 | Sale | Costco Wholesale Corporation COST | Executive VP | 12,000 0.0027% | $234.27 | $2.81M | +22.65% | |
| 2018-06-13 | Sale | Costco Wholesale Corporation COST | Executive VP | 5,000 0.0011% | $205.19 | $1.03M | +11.94% | |
| 2018-03-22 | Sale | Costco Wholesale Corporation COST | Executive VP | 24,000 0.0055% | $184.46 | $4.43M | +19.46% | |
| 2018-03-09 | Sale | Costco Wholesale Corporation COST | Executive VP | 34,000 0.0076% | $185.33 | $6.3M | +14.09% | |
| 2017-12-18 | Sale | Costco Wholesale Corporation COST | Executive VP | 10,000 0.0023% | $193.20 | $1.93M | +8.3% | |
| 2017-03-16 | Sale | Costco Wholesale Corporation COST | Executive VP | 8,000 0.0018% | $166.95 | $1.34M | +4.33% | |
| 2016-10-12 | Sale | Costco Wholesale Corporation COST | Executive VP | 8,000 0.0018% | $151.12 | $1.21M | +10.79% | |
| 2016-03-24 | Sale | Costco Wholesale Corporation COST | Executive VP | 3,554 0.0008% | $151.25 | $537,543 | +3.62% | |
| 2015-07-30 | Sale | Costco Wholesale Corporation COST | Executive VP | 2,830 0.0006% | $145.58 | $411,991 | +5.9% | |
| 2015-04-28 | Sale | Costco Wholesale Corporation COST | Executive VP | 6,000 0.0014% | $147.00 | $882,000 | +2.49% | |
| 2015-01-13 | Sale | Costco Wholesale Corporation COST | Executive VP | 8,164 0.0019% | $142.65 | $1.16M | +7.84% | |
| 2014-12-15 | Sale | Costco Wholesale Corporation COST | Executive VP | 10,000 0.0023% | $139.01 | $1.39M | +9.37% | |
| 2014-12-11 | Sale | Costco Wholesale Corporation COST | Executive VP | 10,000 0.0023% | $142.00 | $1.42M | +6.78% | |
| 2014-08-21 | Sale | Costco Wholesale Corporation COST | Executive VP | 10,878 0.0025% | $121.50 | $1.32M | +19.29% | |
| 2014-03-12 | Sale | Costco Wholesale Corporation COST | Executive VP | 10,000 0.0023% | $115.31 | $1.15M | +9.34% | |
| 2013-05-03 | Sale | Costco Wholesale Corporation COST | Executive VP | 10,000 0.0023% | $110.27 | $1.1M | +5.71% |