| 2017-11-13 | Sale | Costco Wholesale Corporation COST | Executive Vice President | 16,222 0.0037% | $172.78 | $2.8M | +16.14% | |
| 2017-06-05 | Sale | Costco Wholesale Corporation COST | Executive Vice President | 6,000 0.0014% | $181.60 | $1.09M | +0.06% | |
| 2017-02-03 | Sale | Costco Wholesale Corporation COST | Executive Vice President | 9,896 0.0023% | $168.25 | $1.67M | +2% | |
| 2016-07-11 | Sale | Costco Wholesale Corporation COST | Executive Vice President | 15,000 0.0034% | $166.58 | $2.5M | +0.03% | |
| 2016-03-31 | Sale | Costco Wholesale Corporation COST | Executive Vice President | 8,910 0.002% | $159.00 | $1.42M | -0.05% | |
| 2015-10-12 | Sale | Costco Wholesale Corporation COST | Executive Vice President | 13,558 0.0031% | $154.00 | $2.09M | +0.97% | |
| 2014-12-18 | Sale | Costco Wholesale Corporation COST | Executive Vice President | 7,296 0.0017% | $141.07 | $1.03M | +6.89% | |
| 2014-08-11 | Sale | Costco Wholesale Corporation COST | Executive Vice President | 24,000 0.0055% | $118.94 | $2.85M | +20.78% | |
| 2014-03-14 | Sale | Costco Wholesale Corporation COST | Executive Vice President | 6,000 0.0014% | $114.00 | $684,000 | +11.14% | |
| 2014-01-02 | Sale | Costco Wholesale Corporation COST | Executive Vice President | 9,310 0.0021% | $118.40 | $1.1M | +0.28% | |
| 2013-11-01 | Sale | Costco Wholesale Corporation COST | Executive Vice President | 8,000 0.0018% | $118.93 | $951,444 | -1.23% | |
| 2013-05-02 | Sale | Costco Wholesale Corporation COST | Executive Vice President | 6,000 0.0014% | $109.11 | $654,660 | +6.72% | |
| 2012-12-21 | Sale | Costco Wholesale Corporation COST | Executive Vice President | 2,000 0.0005% | $99.00 | $198,000 | +13.07% | |
| 2012-07-27 | Sale | Costco Wholesale Corporation COST | Executive Vice President | 2,500 0.0006% | $96.79 | $241,977 | +12.77% | |
| 2012-03-08 | Sale | Costco Wholesale Corporation COST | Executive Vice President | 4,000 0.0009% | $88.00 | $352,000 | +9.66% | |
| 2011-10-21 | Sale | Costco Wholesale Corporation COST | Executive Vice President | 26,800 0.0061% | $84.91 | $2.28M | +3.32% | |
| 2011-04-26 | Sale | Costco Wholesale Corporation COST | Executive Vice President | 17,500 0.0019% | $37.35 | $653,625 | +3.98% | |
| 2011-04-12 | Sale | Costco Wholesale Corporation COST | Executive Vice President | 25 <0.0001% | $76.19 | $1,905 | +7.98% | |
| 2010-07-28 | Sale | Costco Wholesale Corporation COST | Executive Vice President | 20,000 0.003% | $37.35 | $747,000 | +28.77% |