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| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 03/31/2018 | COSTCO WHOLESALE CORP /NEW | COST | 0 | -21,150 | 0 | -3,936,000 | |
| 12/31/2017 | COSTCO WHOLESALE CORP /NEW | COST | 21,150 | -34 | 3,936,000 | 456,000 | $186.10 |
| 09/30/2017 | COSTCO WHOLESALE CORP /NEW | COST | 21,184 | -2,116 | 3,480,000 | -246,000 | $164.27 |
| 06/30/2017 | COSTCO WHOLESALE CORP /NEW | COST | 23,300 | -6,338 | 3,726,000 | -1,244,000 | $159.91 |
| 03/31/2017 | COSTCO WHOLESALE CORP /NEW | COST | 29,638 | -410,524 | 4,970,000 | -65,504,000 | $167.69 |
| 12/31/2016 | COSTCO WHOLESALE CORP /NEW | COST | 440,162 | -64,782 | 70,474,000 | -6,535,000 | $160.11 |
| 09/30/2016 | COSTCO WHOLESALE CORP /NEW | COST | 504,944 | -123,368 | 77,009,000 | -21,661,000 | $152.51 |
| 06/30/2016 | COSTCO WHOLESALE CORP /NEW | COST | 628,312 | -64,865 | 98,670,000 | -10,561,000 | $157.04 |
| 03/31/2016 | COSTCO WHOLESALE CORP /NEW | COST | 693,177 | -47,545 | 109,231,000 | -10,396,000 | $157.58 |
| 12/31/2015 | COSTCO WHOLESALE CORP /NEW | COST | 740,722 | -24,614 | 119,627,000 | 8,982,000 | $161.50 |
| 09/30/2015 | COSTCO WHOLESALE CORP /NEW | COST | 765,336 | 20,819 | 110,645,000 | 28,324,000 | $144.57 |
| 06/30/2015 | COSTCO WHOLESALE CORP /NEW | COST | 722,733 | -21,784 | 97,612,000 | 15,291,000 | $135.06 |
| 03/31/2015 | COSTCO WHOLESALE CORP /NEW | COST | 740,950 | -3,567 | 112,250,000 | 29,929,000 | $151.49 |
| 12/31/2014 | COSTCO WHOLESALE CORP /NEW | COST | 741,246 | -3,271 | 105,072,000 | 22,751,000 | $141.75 |
| 09/30/2014 | COSTCO WHOLESALE CORP /NEW | COST | 739,699 | -4,818 | 92,699,000 | 10,378,000 | $125.32 |
| 06/30/2014 | COSTCO WHOLESALE CORP /NEW | COST | 740,020 | -4,497 | 85,221,000 | 2,900,000 | $115.16 |
| 03/31/2014 | COSTCO WHOLESALE CORP /NEW | COST | 740,247 | -4,270 | 82,671,000 | 350,000 | $111.68 |
| 12/31/2013 | COSTCO WHOLESALE CORP /NEW | COST | 743,147 | -1,370 | 88,449,000 | 6,128,000 | $119.02 |
| 09/30/2013 | COSTCO WHOLESALE CORP /NEW | COST | 742,898 | -1,619 | 85,560,000 | 3,239,000 | $115.17 |
| 06/30/2013 | COSTCO WHOLESALE CORP /NEW | COST | 744,517 | 4,106 | 82,321,000 | 3,756,000 | $110.57 |
| 03/31/2013 | COSTCO WHOLESALE CORP /NEW | COST | 740,411 | 958 | 78,565,000 | 5,559,000 | $106.11 |
| 12/31/2012 | COSTCO WHOLESALE CORP /NEW | COST | 739,453 | -12,873 | 73,006,000 | -2,347,000 | $98.73 |
| 09/30/2012 | COSTCO WHOLESALE CORP /NEW | COST | 752,326 | -2,611 | 75,353,000 | 3,634,000 | $100.16 |
| 06/30/2012 | COSTCO WHOLESALE CORP /NEW | COST | 754,937 | -816 | 71,719,000 | 3,097,000 | $95.00 |
| 03/31/2012 | COSTCO WHOLESALE CORP /NEW | COST | 755,753 | -1,875 | 68,622,000 | 5,496,000 | $90.80 |
| 12/31/2011 | COSTCO WHOLESALE CORP /NEW | COST | 757,628 | -7,290 | 63,126,000 | 311,000 | $83.32 |
| 09/30/2011 | COSTCO WHOLESALE CORP /NEW | COST | 764,918 | -1,052 | 62,815,000 | 588,000 | $82.12 |
| 06/30/2011 | COSTCO WHOLESALE CORP /NEW | COST | 765,970 | -345 | 62,227,000 | 6,041,000 | $81.24 |
| 03/31/2011 | COSTCO WHOLESALE CORP /NEW | COST | 766,315 | -2,926 | 56,186,000 | 639,000 | $73.32 |
| 12/31/2010 | COSTCO WHOLESALE CORP /NEW | COST | 769,241 | 942 | 55,547,000 | 5,999,000 | $72.21 |
| 09/30/2010 | COSTCO WHOLESALE CORP /NEW | COST | 768,299 | -2,386 | 49,548,000 | 7,291,000 | $64.49 |
| 06/30/2010 | COSTCO WHOLESALE CORP /NEW | COST | 770,685 | -890 | 42,257,000 | -3,814,000 | $54.83 |
| 03/31/2010 | COSTCO WHOLESALE CORP /NEW | COST | 771,575 | -669 | 46,071,000 | 377,000 | $59.71 |
| 12/31/2009 | COSTCO WHOLESALE CORP /NEW | COST | 772,244 | 25,676 | 45,694,000 | 3,543,000 | $59.17 |
| 09/30/2009 | COSTCO WHOLESALE CORP /NEW | COST | 746,568 | -50,909 | 42,151,000 | 5,706,000 | $56.46 |
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