| 2016-07-11 | Sale | Costco Wholesale Corporation COST | Former Executive VP | 29,312 0.0067% | $166.76 | $4.89M | +0.03% | |
| 2015-10-26 | Sale | Costco Wholesale Corporation COST | Executive VP | 50,000 0.0114% | $156.90 | $7.85M | -1.26% | |
| 2014-10-09 | Sale | Costco Wholesale Corporation COST | Executive VP | 30,000 0.0069% | $130.23 | $3.91M | +15.76% | |
| 2013-01-29 | Sale | Costco Wholesale Corporation COST | Former Executive VP | 20,000 0.0046% | $102.96 | $2.06M | +10.34% | |
| 2012-03-27 | Sale | Costco Wholesale Corporation COST | Executive VP | 15,000 – | $0 | $0 | +6.8% | |
| 2011-10-17 | Sale | Costco Wholesale Corporation COST | Executive VP | 20,589 – | $0 | $0 | +6.63% | |
| 2010-11-12 | Sale | Costco Wholesale Corporation COST | Former Executive VP | 10,000 0.0012% | $33.75 | $337,500 | +19.76% | |
| 2008-04-01 | Sale | Costco Wholesale Corporation COST | Former Executive VP | 20,000 0.0027% | $38.79 | $775,800 | -6.44% | |
| 2007-01-10 | Sale | Costco Wholesale Corporation COST | Former Executive VP | 158,000 0.0347% | $53.95 | $8.52M | +8.47% | |
| 2005-01-19 | Sale | Costco Wholesale Corporation COST | Former Executive VP | 2,000 0.0003% | $34.28 | $68,560 | -5.07% |