Costco Wholesale Corporation

Raikes Jeffrey S sold 5,249 shares of COST on 10 July. They now own 6,043.936 COST shares.

Denman Kenneth D sold 885 shares of COST on 23 June. They now own 4,778.936 COST shares.

Frates Caton sold 700 shares of COST on 1 April. They now own 5,815.001 COST shares.

George Sarah Catherine sold 642.125 shares of COST on 12 March. They now own 0 COST shares.

Millerchip Gary sold 1,154.017 shares of COST on 11 March. They now own 15,465.301 COST shares.

Adamo Claudine sold 730 shares of COST on 9 March. They now own 6,121.195 COST shares.

George Sarah Catherine bought 0 shares of COST on 2 March. They now own 1,401.258 COST shares.

George Sarah Catherine bought 0 shares of COST on 2 March. They now own 642.125 COST shares.

George Sarah Catherine bought 0 shares of COST on 2 March. They now own 4,127.836 COST shares.

Raikes Jeffrey S sold 5,115 shares of COST on 27 January. They now own 11,292.936 COST shares.

Jones Teresa A. sold 300 shares of COST on 27 January. They now own 3,927.804 COST shares.

Jones Teresa A. sold 850 shares of COST on 21 January. They now own 4,227.804 COST shares.

Decker Susan L sold 458 shares of COST on 16 January. They now own 8,531.936 COST shares.

Raimondo Gina Marie bought 215 shares of COST on 16 January. They now own 215 COST shares.

Raimondo Gina Marie bought 0 shares of COST on 15 January. They now own 0 COST shares.

Klauer James C sold 1,500 shares of COST on 14 January. They now own 44,836.994 COST shares.

Miller Russell D sold 1,500 shares of COST on 9 January. They now own 8,240 COST shares.

Polit Javier sold 558.305 shares of COST on 30 December. They now own 10,189.592 COST shares.

Polit Javier sold 2,049 shares of COST on 29 December. They now own 10,747.897 COST shares.

Denman Kenneth D sold 325 shares of COST on 19 December. They now own 5,663.936 COST shares.

Decker Susan L sold 2,827 shares of COST on 15 December. They now own 8,989.936 COST shares.

Raikes Jeffrey S sold 4,120 shares of COST on 10 November. They now own 16,407.936 COST shares.

Wilcox William Richard sold 2,400 shares of COST on 7 November. They now own 2,000 COST shares.

Adamo Claudine sold 2,700 shares of COST on 24 October. They now own 6,851.197 COST shares.

Barbre Tiffany Marie sold 1,239.383 shares of COST on 24 October. They now own 5,155.447 COST shares.

Millerchip Gary sold 313.05 shares of COST on 22 October. They now own 17,119.643 COST shares.

Callans Patrick J sold 239.95 shares of COST on 22 October. They now own 61,571.558 COST shares.

Raikes Jeffrey S bought 286 shares of COST on 22 October. They now own 20,527.936 COST shares.

Vachris Roland Michael sold 1,493.05 shares of COST on 22 October. They now own 53,417.812 COST shares.

Frates Caton sold 155.74 shares of COST on 22 October. They now own 9,127.954 COST shares.

Barbre Tiffany Marie sold 84.6 shares of COST on 22 October. They now own 6,394.83 COST shares.

Adamo Claudine sold 176.66 shares of COST on 22 October. They now own 9,661.767 COST shares.

Klauer James C sold 110.97 shares of COST on 22 October. They now own 46,336.987 COST shares.

Klauer James C sold 198.69 shares of COST on 22 October. They now own 46,625.017 COST shares.

Sullivan John Christopher sold 421.01 shares of COST on 22 October. They now own 49,763.682 COST shares.

James Hamilton E bought 286 shares of COST on 22 October. They now own 55,537.936 COST shares.

Callans Patrick J sold 191.08 shares of COST on 22 October. They now own 61,380.478 COST shares.

Vachris Roland Michael bought 13,834 shares of COST on 22 October. They now own 54,910.862 COST shares.

Barbre Tiffany Marie bought 2,118 shares of COST on 22 October. They now own 6,937.15 COST shares.

Polit Javier sold 293.89 shares of COST on 22 October. They now own 13,133.511 COST shares.

Callans Patrick J sold 198.69 shares of COST on 22 October. They now own 61,181.788 COST shares.

Adamo Claudine sold 198.69 shares of COST on 22 October. They now own 9,838.427 COST shares.

Klauer James C sold 177.06 shares of COST on 22 October. They now own 46,447.957 COST shares.

Denman Kenneth D bought 286 shares of COST on 22 October. They now own 5,988.936 COST shares.

Barbre Tiffany Marie sold 118.56 shares of COST on 22 October. They now own 6,614.83 COST shares.

Callans Patrick J sold 110.57 shares of COST on 22 October. They now own 60,894.558 COST shares.

Jewell Sarah Mr Sally bought 286 shares of COST on 22 October. They now own 3,612.936 COST shares.

Sullivan John Christopher sold 572.83 shares of COST on 22 October. They now own 49,190.852 COST shares.

Polit Javier sold 336.61 shares of COST on 22 October. They now own 12,796.901 COST shares.

Sullivan John Christopher sold 568.89 shares of COST on 22 October. They now own 48,621.962 COST shares.

Barbre Tiffany Marie sold 113.53 shares of COST on 22 October. They now own 6,823.62 COST shares.

Frates Caton sold 247.66 shares of COST on 22 October. They now own 8,880.294 COST shares.

Polit Javier bought 4,219 shares of COST on 22 October. They now own 13,965.181 COST shares.

Millerchip Gary sold 500.32 shares of COST on 22 October. They now own 16,619.323 COST shares.

Adamo Claudine sold 110.57 shares of COST on 22 October. They now own 9,551.197 COST shares.

Decker Susan L bought 286 shares of COST on 22 October. They now own 11,816.936 COST shares.

Barbre Tiffany Marie sold 135.4 shares of COST on 22 October. They now own 6,479.43 COST shares.

Millerchip Gary bought 6,268 shares of COST on 22 October. They now own 17,432.693 COST shares.

Wilderotter Mary Agnes bought 286 shares of COST on 22 October. They now own 3,204.936 COST shares.

Sullivan John Christopher sold 365.96 shares of COST on 22 October. They now own 47,671.152 COST shares.

Frates Caton sold 758.28 shares of COST on 22 October. They now own 8,122.014 COST shares.

Callans Patrick J sold 176.66 shares of COST on 22 October. They now own 61,005.128 COST shares.

Foulkes Helena bought 286 shares of COST on 22 October. They now own 1,086.802 COST shares.

Adamo Claudine sold 121.78 shares of COST on 22 October. They now own 10,134.057 COST shares.

Sullivan John Christopher bought 4,654 shares of COST on 22 October. They now own 50,184.692 COST shares.

Klauer James C sold 190.68 shares of COST on 22 October. They now own 46,823.707 COST shares.

Frates Caton sold 901.26 shares of COST on 22 October. They now own 7,220.754 COST shares.

Klauer James C sold 239.95 shares of COST on 22 October. They now own 47,014.387 COST shares.

Vachris Roland Michael sold 1,159.75 shares of COST on 22 October. They now own 52,258.062 COST shares.

Barbre Tiffany Marie sold 90.23 shares of COST on 22 October. They now own 6,733.39 COST shares.

Polit Javier sold 537.78 shares of COST on 22 October. They now own 13,427.401 COST shares.

Adamo Claudine sold 96.94 shares of COST on 22 October. They now own 10,037.117 COST shares.

Frates Caton sold 705.75 shares of COST on 22 October. They now own 6,515.004 COST shares.

Sullivan John Christopher sold 584.85 shares of COST on 22 October. They now own 48,037.112 COST shares.

Stanton John W bought 286 shares of COST on 22 October. They now own 24,089.936 COST shares.

Wilcox William Richard bought 0 shares of COST on 6 October. They now own 4,400.969 COST shares.

Frates Caton sold 1,540 shares of COST on 29 September. They now own 9,283.694 COST shares.

Miller Russell D sold 3,381 shares of COST on 29 September. They now own 9,740 COST shares.

Miller Russell D bought 2,918 shares of COST on 23 September. They now own 13,120 COST shares.

Miller Russell D sold 2,918 shares of COST on 23 September. They now own 1.925 COST shares.

Frates Caton sold 1,271.078 shares of COST on 10 September. They now own 10,823.694 COST shares.

Riel Pierre bought 4,654 shares of COST on 10 September. They now own 12,864.246 COST shares.

Riel Pierre sold 1,608.361 shares of COST on 10 September. They now own 11,255.885 COST shares.

Adamo Claudine sold 949.666 shares of COST on 10 September. They now own 10,255.837 COST shares.

Miller Russell D sold 1,735.085 shares of COST on 10 September. They now own 2,919.925 COST shares.

Frates Caton bought 4,219 shares of COST on 10 September. They now own 12,094.772 COST shares.

Rubanenko Yoram sold 1,745.913 shares of COST on 10 September. They now own 8,247.119 COST shares.

Jones Teresa A. sold 1,503.321 shares of COST on 10 September. They now own 5,077.804 COST shares.

Klauer James C bought 4,219 shares of COST on 10 September. They now own 48,212.624 COST shares.

Callans Patrick J sold 949.666 shares of COST on 10 September. They now own 61,811.508 COST shares.

Adamo Claudine bought 4,219 shares of COST on 10 September. They now own 11,205.503 COST shares.

Jones Teresa A. bought 4,219 shares of COST on 10 September. They now own 6,581.125 COST shares.

Callans Patrick J bought 4,219 shares of COST on 10 September. They now own 62,761.174 COST shares.

Rubanenko Yoram bought 4,219 shares of COST on 10 September. They now own 9,993.032 COST shares.

Miller Russell D bought 4,654 shares of COST on 10 September. They now own 4,655.01 COST shares.

Klauer James C sold 958.287 shares of COST on 10 September. They now own 47,254.337 COST shares.

Stanton John W bought 211 shares of COST on 2 September. They now own 211 COST shares.

Stanton John W sold 211 shares of COST on 2 September. They now own 211 COST shares.

Jones Teresa A. sold 600 shares of COST on 20 August. They now own 2,362.125 COST shares.

Rubanenko Yoram sold 4,000 shares of COST on 14 July. They now own 5,774.032 COST shares.

Raikes Jeffrey S sold 6,573 shares of COST on 14 July. They now own 20,241.936 COST shares.

Barbre Tiffany Marie bought 0 shares of COST on 1 July. They now own 4,819.15 COST shares.

Decker Susan L sold 546 shares of COST on 18 June. They now own 11,531.936 COST shares.

Decker Susan L sold 1 shares of COST on 18 June. They now own 11,530.936 COST shares.

Callans Patrick J sold 3,000 shares of COST on 9 June. They now own 58,542.737 COST shares.

Riel Pierre sold 2,000 shares of COST on 6 June. They now own 8,210.246 COST shares.

Klauer James C sold 4,000 shares of COST on 17 April. They now own 43,993.624 COST shares.

Millerchip Gary sold 1,100 shares of COST on 27 March. They now own 11,164.693 COST shares.

Adamo Claudine sold 900 shares of COST on 24 March. They now own 6,986.503 COST shares.

Frates Caton sold 850 shares of COST on 18 March. They now own 7,875.772 COST shares.

Vachris Roland Michael sold 3,600 shares of COST on 11 March. They now own 41,076.862 COST shares.

Millerchip Gary sold 1,147.255 shares of COST on 11 March. They now own 12,264.693 COST shares.

Jelinek W Craig sold 2,017 shares of COST on 19 December. They now own 204,365.061 COST shares.

Raikes Jeffrey S sold 3,969 shares of COST on 16 December. They now own 26,814.936 COST shares.

Denman Kenneth D sold 520 shares of COST on 16 December. They now own 5,702.936 COST shares.

Galanti Richard A sold 1,416.461 shares of COST on 24 October. They now own 27,400 COST shares.

Jones Teresa A. sold 800 shares of COST on 23 October. They now own 2,960.942 COST shares.

Millerchip Gary bought 3,922 shares of COST on 22 October. They now own 13,725 COST shares.

Frates Caton sold 125.37 shares of COST on 22 October. They now own 9,208.676 COST shares.

Polit Javier sold 380.176 shares of COST on 22 October. They now own 10,040.072 COST shares.

Millerchip Gary sold 313.052 shares of COST on 22 October. They now own 13,411.948 COST shares.

Adamo Claudine sold 97.342 shares of COST on 22 October. They now own 8,261.45 COST shares.

Sullivan John Christopher bought 7,433.436 shares of COST on 22 October. They now own 48,051.527 COST shares.

Klauer James C sold 198.289 shares of COST on 22 October. They now own 48,170.282 COST shares.

Callans Patrick J sold 721.05 shares of COST on 22 October. They now own 64,358.837 COST shares.

Sullivan John Christopher sold 514.349 shares of COST on 22 October. They now own 47,537.178 COST shares.

Wilderotter Mary Agnes bought 303 shares of COST on 22 October. They now own 12,670.936 COST shares.

Stanton John W bought 303 shares of COST on 22 October. They now own 23,803.936 COST shares.

Sullivan John Christopher sold 421.414 shares of COST on 22 October. They now own 47,115.764 COST shares.

Foulkes Helena bought 303 shares of COST on 22 October. They now own 800.802 COST shares.

Decker Susan L bought 303 shares of COST on 22 October. They now own 12,077.936 COST shares.

Hines Daniel M. sold 60.236 shares of COST on 22 October. They now own 12,912.709 COST shares.

Frates Caton sold 190.892 shares of COST on 22 October. They now own 9,491.403 COST shares.

Klauer James C sold 291.224 shares of COST on 22 October. They now own 48,799.6 COST shares.

Klauer James C sold 176.658 shares of COST on 22 October. They now own 47,993.624 COST shares.

Frates Caton sold 227.522 shares of COST on 22 October. They now own 8,725.772 COST shares.

Hines Daniel M. sold 73.398 shares of COST on 22 October. They now own 12,839.311 COST shares.

Jones Teresa A. sold 403.788 shares of COST on 22 October. They now own 4,211.198 COST shares.

Vachris Roland Michael bought 19,147.562 shares of COST on 22 October. They now own 46,407.725 COST shares.

Sullivan John Christopher sold 572.834 shares of COST on 22 October. They now own 46,542.93 COST shares.

James Hamilton E bought 303 shares of COST on 22 October. They now own 55,251.936 COST shares.

Jewell Sarah Mr Sally bought 303 shares of COST on 22 October. They now own 3,326.936 COST shares.

Jones Teresa A. sold 450.256 shares of COST on 22 October. They now own 3,760.942 COST shares.

Adamo Claudine sold 122.178 shares of COST on 22 October. They now own 8,358.792 COST shares.

Hines Daniel M. sold 91.965 shares of COST on 22 October. They now own 13,048.55 COST shares.

Hines Daniel M. sold 563.493 shares of COST on 22 October. They now own 12,186.087 COST shares.

Adamo Claudine sold 198.289 shares of COST on 22 October. They now own 8,063.161 COST shares.

Callans Patrick J sold 1,060.344 shares of COST on 22 October. They now own 61,542.737 COST shares.

Adamo Claudine sold 176.658 shares of COST on 22 October. They now own 7,886.503 COST shares.

Hines Daniel M. sold 89.731 shares of COST on 22 October. They now own 12,749.58 COST shares.

Polit Javier bought 6,737.124 shares of COST on 22 October. They now own 10,420.248 COST shares.

Callans Patrick J sold 991.844 shares of COST on 22 October. They now own 62,603.081 COST shares.

Vachris Roland Michael sold 1,730.863 shares of COST on 22 October. They now own 44,676.862 COST shares.

Sullivan John Christopher sold 584.852 shares of COST on 22 October. They now own 45,530.692 COST shares.

Klauer James C sold 191.079 shares of COST on 22 October. They now own 48,368.571 COST shares.

Jones Teresa A. sold 45.859 shares of COST on 22 October. They now own 4,889.158 COST shares.

Sullivan John Christopher sold 427.386 shares of COST on 22 October. They now own 46,115.544 COST shares.

Hines Daniel M. sold 75.605 shares of COST on 22 October. They now own 12,972.945 COST shares.

Callans Patrick J sold 583.65 shares of COST on 22 October. They now own 65,079.887 COST shares.

Denman Kenneth D bought 303 shares of COST on 22 October. They now own 6,222.936 COST shares.

Jones Teresa A. sold 75.605 shares of COST on 22 October. They now own 4,813.553 COST shares.

Frates Caton sold 157.357 shares of COST on 22 October. They now own 9,334.046 COST shares.

Klauer James C sold 239.95 shares of COST on 22 October. They now own 48,559.65 COST shares.

Jelinek W Craig bought 303 shares of COST on 22 October. They now own 206,382.061 COST shares.

Hines Daniel M. bought 2,149 shares of COST on 22 October. They now own 13,140.515 COST shares.

Jones Teresa A. sold 198.567 shares of COST on 22 October. They now own 4,614.986 COST shares.

Frates Caton sold 255.382 shares of COST on 22 October. They now own 8,953.294 COST shares.

Callans Patrick J sold 763.912 shares of COST on 22 October. They now own 63,594.925 COST shares.

Raikes Jeffrey S bought 303 shares of COST on 22 October. They now own 30,783.936 COST shares.

Polit Javier sold 293.891 shares of COST on 22 October. They now own 9,746.181 COST shares.

Adamo Claudine sold 148.617 shares of COST on 22 October. They now own 8,480.97 COST shares.

Riel Pierre sold 2,000 shares of COST on 15 October. They now own 10,210.246 COST shares.

Miller Russell D sold 4,400 shares of COST on 11 October. They now own 10,202 COST shares.

Adamo Claudine sold 3,200 shares of COST on 30 September. They now own 8,629.587 COST shares.

Frates Caton sold 1,700 shares of COST on 30 September. They now own 9,682.295 COST shares.

Callans Patrick J sold 2,500 shares of COST on 30 September. They now own 66,413.537 COST shares.

Callans Patrick J sold 750 shares of COST on 30 September. They now own 65,663.537 COST shares.

Miller Russell D sold 4,602 shares of COST on 24 September. They now own 1.01 COST shares.

Miller Russell D bought 4,602 shares of COST on 24 September. They now own 14,602 COST shares.

Klauer James C sold 1,610.418 shares of COST on 16 September. They now own 49,090.824 COST shares.

Frates Caton sold 2,111.028 shares of COST on 16 September. They now own 11,382.295 COST shares.

Miller Russell D bought 7,433.436 shares of COST on 16 September. They now own 7,435.082 COST shares.

Adamo Claudine sold 1,602.151 shares of COST on 16 September. They now own 11,829.587 COST shares.

Riel Pierre sold 2,645.366 shares of COST on 16 September. They now own 12,210.246 COST shares.

Adamo Claudine bought 6,737.124 shares of COST on 16 September. They now own 13,431.738 COST shares.

Callans Patrick J bought 6,737.124 shares of COST on 16 September. They now own 69,632.002 COST shares.

Rubanenko Yoram bought 6,737.124 shares of COST on 16 September. They now own 12,647.254 COST shares.

Galanti Richard A bought 9,482.67 shares of COST on 16 September. They now own 32,382.67 COST shares.

Galanti Richard A sold 3,566.209 shares of COST on 16 September. They now own 28,816.461 COST shares.

Callans Patrick J sold 718.465 shares of COST on 16 September. They now own 68,913.537 COST shares.

Riel Pierre bought 7,433.436 shares of COST on 16 September. They now own 14,855.612 COST shares.

Rubanenko Yoram sold 2,873.222 shares of COST on 16 September. They now own 9,774.032 COST shares.

Miller Russell D sold 2,832.072 shares of COST on 16 September. They now own 4,603.01 COST shares.

Frates Caton bought 6,737.124 shares of COST on 16 September. They now own 13,493.323 COST shares.

Klauer James C bought 6,737.124 shares of COST on 16 September. They now own 50,701.242 COST shares.

Galanti Richard A sold 500 shares of COST on 15 August. They now own 22,900 COST shares.

Decker Susan L sold 620 shares of COST on 15 August. They now own 11,774.936 COST shares.

Galanti Richard A sold 400 shares of COST on 13 August. They now own 23,400 COST shares.

Galanti Richard A sold 500 shares of COST on 13 August. They now own 23,800 COST shares.

Jones Teresa A. sold 4 shares of COST on 25 July. They now own 4,935.017 COST shares.