| 2021-08-13 | Sale | Costco Wholesale Corporation COST | Executive VP | 3,287 0.0007% | $445.50 | $1.46M | +14.78% | |
| 2020-09-29 | Sale | Costco Wholesale Corporation COST | Executive VP | 6,000 0.0013% | $348.00 | $2.09M | +9.11% | |
| 2019-10-30 | Sale | Costco Wholesale Corporation COST | Executive VP | 14,095 0.0032% | $299.52 | $4.22M | +3.17% | |
| 2019-03-11 | Sale | Costco Wholesale Corporation COST | Executive VP | 23,530 0.0053% | $228.51 | $5.38M | +26.12% | |
| 2017-12-18 | Sale | Costco Wholesale Corporation COST | Executive VP | 20,000 0.0046% | $193.09 | $3.86M | +8.3% | |
| 2016-12-09 | Sale | Costco Wholesale Corporation COST | Executive VP | 33,842 0.0076% | $158.38 | $5.36M | +5.31% | |
| 2015-10-13 | Sale | Costco Wholesale Corporation COST | Executive VP | 20,000 0.0046% | $152.75 | $3.06M | +1.86% | |
| 2014-10-29 | Sale | Costco Wholesale Corporation COST | Executive VP | 30,000 0.0068% | $131.55 | $3.95M | +13.66% | |
| 2014-10-09 | Sale | Costco Wholesale Corporation COST | Executive VP | 9,370 0.0022% | $130.13 | $1.22M | +15.76% | |
| 2013-10-29 | Sale | Costco Wholesale Corporation COST | Executive VP | 29,800 0.0068% | $118.29 | $3.53M | -0.54% | |
| 2012-12-31 | Sale | Costco Wholesale Corporation COST | Executive VP | 16,000 0.0036% | $97.34 | $1.56M | +14.22% | |
| 2011-10-27 | Sale | Costco Wholesale Corporation COST | Executive VP | 23,490 0.0054% | $84.45 | $1.98M | +3.72% | |
| 2011-10-14 | Sale | Costco Wholesale Corporation COST | Executive VP | 4,618 0.0011% | $82.37 | $380,385 | +7.28% | |
| 2011-10-12 | Sale | Costco Wholesale Corporation COST | Executive VP | 10,398 0.0024% | $81.95 | $852,116 | +7.69% | |
| 2010-11-11 | Sale | Costco Wholesale Corporation COST | Executive VP | 30,000 0.0068% | $64.46 | $1.93M | +19.41% | |
| 2010-11-10 | Sale | Costco Wholesale Corporation COST | Executive VP | 6,000 0.0014% | $64.34 | $386,036 | +20.86% | |
| 2010-05-06 | Sale | Costco Wholesale Corporation COST | Executive VP | 4,000 0.0009% | $55.17 | $220,664 | +12.51% | |
| 2010-04-30 | Sale | Costco Wholesale Corporation COST | Executive VP | 15,000 0.0025% | $43.79 | $656,850 | +10.22% | |
| 2009-11-09 | Sale | Costco Wholesale Corporation COST | Executive VP | 4,000 0.0009% | $57.58 | $230,332 | -1.74% | |
| 2009-11-04 | Sale | Costco Wholesale Corporation COST | Executive VP | 12,000 0.0027% | $58.59 | $703,080 | +0.98% |