| 2017-10-25 | Sale | Costco Wholesale Corporation COST | Executive VP | 10,000 0.0023% | $162.16 | $1.62M | +21.55% | |
| 2017-10-24 | Sale | Costco Wholesale Corporation COST | Executive VP | 10,000 0.0023% | $161.92 | $1.62M | +21.46% | |
| 2017-01-10 | Sale | Costco Wholesale Corporation COST | Executive VP | 14,000 0.0032% | $161.12 | $2.26M | +5.43% | |
| 2016-11-15 | Sale | Costco Wholesale Corporation COST | Executive VP | 20,000 0.0023% | $75.45 | $1.51M | +10.71% | |
| 2016-03-14 | Sale | Costco Wholesale Corporation COST | Executive VP | 8,150 0.0019% | $152.96 | $1.25M | +2.21% | |
| 2015-10-12 | Sale | Costco Wholesale Corporation COST | Executive VP | 18,000 0.0041% | $153.96 | $2.77M | +0.97% | |
| 2015-01-12 | Sale | Costco Wholesale Corporation COST | Executive VP | 16,000 0.0036% | $142.54 | $2.28M | +6.74% | |
| 2014-10-13 | Sale | Costco Wholesale Corporation COST | Executive VP | 14,000 0.0032% | $128.10 | $1.79M | +17.3% | |
| 2013-10-16 | Sale | Costco Wholesale Corporation COST | Executive VP | 20,000 0.0045% | $116.37 | $2.33M | +0.22% | |
| 2013-04-03 | Sale | Costco Wholesale Corporation COST | Executive VP | 8,000 0.0018% | $106.50 | $852,000 | +8.72% | |
| 2012-10-26 | Sale | Costco Wholesale Corporation COST | Former Executive VP | 11,000 0.0025% | $96.29 | $1.06M | +20.72% | |
| 2012-03-12 | Sale | Costco Wholesale Corporation COST | Executive VP | 7,900 – | $0 | $0 | +8.46% | |
| 2011-10-26 | Sale | Costco Wholesale Corporation COST | Executive VP | 18,802 0.0011% | $22.18 | $417,050 | +5.56% | |
| 2011-04-27 | Sale | Costco Wholesale Corporation COST | Executive VP | 1,607 – | $0 | $0 | +2.3% | |
| 2011-03-10 | Sale | Costco Wholesale Corporation COST | Executive VP | 8,000 – | $0 | $0 | +11.44% | |
| 2010-04-13 | Sale | Costco Wholesale Corporation COST | Former Executive VP | 15,000 0.0025% | $43.79 | $656,850 | +7.1% | |
| 2009-12-16 | Sale | Costco Wholesale Corporation COST | Former Executive VP | 5,000 0.0011% | $59.09 | $295,455 | +1.52% | |
| 2009-11-16 | Sale | Costco Wholesale Corporation COST | Executive VP | 8,000 – | $0 | $0 | -2.84% | |
| 2009-07-31 | Sale | Costco Wholesale Corporation COST | Former Executive VP | 15,000 0.0031% | $43.79 | $656,850 | +18.9% | |
| 2009-04-14 | Sale | Costco Wholesale Corporation COST | Former Executive VP | 15,000 0.0028% | $37.35 | $560,250 | +28.36% |