Insider Trading activities of Costco Wholesale Corp /new insiders.

Monthly summaries of insider trading activities (stock purchases, sales, and option exercises) reported by insiders of Costco Wholesale Corp /new since 2005 are illustrated in Table 1 and Table 2. Table 1 shows the monthly insider trading data of Costco Wholesale Corp /new since year 2005. Table 2 shows the detailed insider transactions of Costco Wholesale Corp /new since 2005. The reporting company's ticker symbol is COST. The reporting company's CIK number is 909832.
The total value of stock buying since 2005 is $2,101,520.
The total value of stock sales since 2005 is $500,905,251.
The total value of stock option exercises since 2005 is $289,978,055.


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Table 1. Monthly summaries of insider stock purchases, sales, and option exercises for Costco Wholesale Corp /new (COST).
Trading Period Insider Buying Insider Sales Option Exercises
year-month Shares Value Shares Value Shares Value
2017-10 0 $0 1,000 $164,920 0 $0
2017-09 0 $0 1,000 $157,590 0 $0
2017-08 0 $0 1,000 $159,250 0 $0
2017-07 0 $0 1,000 $160,280 0 $0
2017-06 0 $0 13,000 $2,357,913 0 $0
2017-03 0 $0 121,000 $20,099,872 0 $0
2017-02 0 $0 4,948 $832,501 0 $0
2017-01 0 $0 24,369 $3,940,482 0 $0
2016-12 0 $0 102,540 $16,627,648 0 $0
2016-11 0 $0 15,041 $740,221 0 $0
2016-10 0 $0 29,499 $4,415,321 0 $0
2016-08 0 $0 5,737 $962,347 0 $0
2016-07 0 $0 38,178 $6,363,947 0 $0
2016-03 0 $0 45,307 $6,985,827 0 $0
2016-01 0 $0 44,125 $6,705,852 0 $0
2015-12 0 $0 69,095 $11,105,721 0 $0
2015-11 10,000 $1,553,970 0 $0 0 $0
2015-10 0 $0 131,052 $20,327,517 0 $0
2015-07 0 $0 1,415 $205,995 0 $0
2015-04 0 $0 102,500 $15,388,916 0 $0
2015-03 0 $0 89,398 $13,307,088 96,132 $3,751,069
2015-01 0 $0 22,082 $3,120,849 0 $0
2014-12 0 $0 16,648 $2,337,543 0 $0
2014-11 0 $0 13,976 $1,916,993 0 $0
2014-10 0 $0 94,092 $12,282,914 0 $0
2014-09 0 $0 600 $72,600 0 $0
2014-08 0 $0 210,467 $24,947,735 182,360 $7,420,228
2014-07 0 $0 600 $69,174 0 $0
2014-06 0 $0 21,515 $2,507,184 915 $37,231
2014-05 0 $0 4,600 $528,454 0 $0
2014-04 0 $0 14,600 $1,637,626 0 $0
2014-03 0 $0 69,208 $7,907,666 53,444 $1,926,801
2014-02 0 $0 4,600 $527,736 0 $0
2014-01 0 $0 9,255 $1,086,671 6,457 $224,122
2013-12 0 $0 20,500 $2,431,070 0 $0
2013-11 0 $0 101,542 $12,437,315 27,915 $1,058,629
2013-10 0 $0 72,342 $8,467,228 0 $0
2013-09 0 $0 8,000 $946,880 0 $0
2013-08 0 $0 8,000 $900,480 0 $0
2013-07 0 $0 8,000 $927,360 0 $0
2013-06 0 $0 13,000 $1,435,610 0 $0
2013-05 0 $0 16,000 $1,765,560 0 $0
2013-04 0 $0 57,830 $6,138,246 45,830 $1,787,591
2013-03 0 $0 10,000 $1,032,500 0 $0
2013-02 0 $0 8,000 $814,320 6,457 $182,474
2013-01 0 $0 28,000 $2,858,059 0 $0
2012-12 0 $0 258,426 $23,758,122 193,307 $6,307,123
2012-11 0 $0 16,000 $1,523,200 0 $0
2012-10 0 $0 211,278 $20,383,351 175,500 $6,675,915
2012-09 0 $0 16,000 $1,633,536 0 $0
2012-08 0 $0 116,000 $11,122,656 300,000 $11,849,000
2012-07 0 $0 18,500 $1,772,297 0 $0
2012-06 0 $0 173,621 $15,848,059 150,000 $4,561,499
2012-05 0 $0 16,000 $0 0 $0
2012-04 0 $0 28,000 $0 12,000 $364,920
2012-03 0 $0 140,900 $352,000 101,000 $3,839,400
2012-02 0 $0 16,000 $0 0 $0
2012-01 0 $0 28,000 $0 12,000 $475,800
2011-12 0 $0 18,000 $839,500 0 $0
2011-11 0 $0 107,898 $0 0 $0
2011-10 0 $0 221,092 $2,177,100 107,000 $4,302,310
2011-09 0 $0 8,000 $0 0 $0
2011-08 0 $0 8,000 $0 0 $0
2011-07 0 $0 8,000 $0 0 $0
2011-06 0 $0 14,048 $0 0 $0
2011-05 0 $0 46,300 $0 38,300 $1,534,716
2011-04 0 $0 328,093 $1,366,039 297,200 $11,302,924
2011-03 0 $0 16,000 $0 6,000 $217,128
2011-02 0 $0 172,000 $0 164,000 $6,255,400
2011-01 0 $0 20,000 $0 12,000 $434,256
2010-12 0 $0 128,908 $1,362,063 15,000 $581,850
2010-11 0 $0 117,714 $1,462,338 71,000 $2,514,705
2010-10 0 $0 528,052 $117,697 586,000 $21,119,136
2010-09 0 $0 8,000 $0 0 $0
2010-07 0 $0 206,362 $3,256,547 47,000 $1,673,100
2010-06 0 $0 24,000 $0 24,000 $868,512
2010-05 0 $0 10,000 $570,732 0 $0
2010-04 0 $0 269,932 $56,146 261,000 $10,313,982
2010-03 0 $0 466,790 $2,250,000 351,000 $16,210,827
2010-02 0 $0 8,000 $0 0 $0
2010-01 0 $0 25,174 $0 12,000 $630,000
2009-12 0 $0 234,000 $3,322,205 229,000 $9,499,100
2009-11 0 $0 216,392 $808,880 145,000 $7,156,379
2009-10 0 $0 233,338 $659,834 154,500 $6,960,615
2009-09 0 $0 4,000 $0 0 $0
2009-07 5,300 $0 30,000 $0 30,000 $1,217,100
2009-04 0 $0 17,949 $91,445 15,000 $560,250
2009-03 0 $0 258,016 $85,579 256,000 $11,258,688
2009-02 0 $0 102,016 $84,974 100,000 $3,690,600
2009-01 0 $0 2,016 $95,880 0 $0
2008-12 0 $0 308,387 $107,170 0 $0
2008-11 0 $0 252,016 $5,469,218 150,000 $5,428,048
2008-10 0 $0 316,639 $17,274,019 200,000 $8,993,600
2008-09 0 $0 2,016 $138,358 0 $0
2008-08 0 $0 2,016 $135,717 0 $0
2008-07 0 $0 9,516 $139,386 7,500 $373,590
2008-06 0 $0 174,500 $0 74,500 $2,388,476
2008-05 0 $0 86,100 $732,790 83,500 $2,954,925
2008-04 0 $0 319,533 $233,137 216,000 $8,378,228
2008-03 0 $0 478,600 $156,052 524,000 $14,654,200
2008-02 0 $0 52,600 $165,360 50,000 $2,321,340
2008-01 0 $0 163,600 $1,573,378 161,000 $5,182,575
2007-12 0 $0 102,600 $7,140,513 0 $0
2007-11 0 $0 72,600 $171,444 70,000 $2,354,800
2007-10 0 $0 124,188 $2,662,406 120,000 $4,648,210
2007-09 0 $0 2,600 $154,934 0 $0
2007-08 0 $0 287,600 $11,461,976 85,000 $3,137,639
2007-07 0 $0 146,100 $3,369,190 143,500 $4,760,225
2007-06 0 $0 77,600 $1,009,206 75,000 $2,845,350
2007-04 0 $0 212,420 $11,404,590 60,000 $2,312,100
2007-03 0 $0 317,500 $11,540,610 432,000 $5,824,784
2007-02 0 $0 165,500 $9,464,339 164,000 $3,292,089
2007-01 0 $0 245,000 $13,361,972 243,500 $8,323,665
2006-11 0 $0 1,500 $78,600 0 $0
2006-10 0 $0 496,500 $15,567,687 145,000 $5,139,375
2006-09 2,000 $99,100 1,500 $75,840 0 $0
2006-08 0 $0 1,500 $78,600 0 $0
2006-07 0 $0 1,500 $80,235 0 $0
2006-05 0 $0 750 $40,875 0 $0
2006-04 0 $0 487,000 $26,591,090 487,000 $17,197,600
2006-03 0 $0 371,000 $19,889,030 452,000 $7,217,332
2006-01 0 $0 300,000 $15,035,368 300,000 $3,206,399
2005-12 0 $0 17,500 $495,000 7,500 $280,125
2005-06 0 $0 0 $0 0 $0
2005-03 10,000 $448,450 0 $0 0 $0

Table 2. Detailed insider stock purchases, sales, and option exercises of Costco Wholesale Corp /new insiders (COST)
  Trade Date   Insider Name Trade Type     Shares       Price ($)   Value ($)
2017-10-02 Meisenbach John W (Director) Sale 1,000 164.92 164,920
2017-09-01 Meisenbach John W (Director) Sale 1,000 157.59 157,590
2017-08-01 Meisenbach John W (Director) Sale 1,000 159.25 159,250
2017-07-03 Meisenbach John W (Director) Sale 1,000 160.28 160,280
2017-06-07 Murphy James P. (Executive VP) Sale 5,000 181.30 906,504
2017-06-06 Hines Daniel M. (Other) Sale 5,000 181.32 906,600
2017-06-05 Mckay John D (Executive Vice President) Sale 3,000 181.60 544,809
2017-03-24 Sinegal James D (Director) Sale 100,000 166.35 16,635,300
2017-03-16 Rose Timothy L. (Executive VP) Sale 4,000 166.95 667,800
2017-03-13 Sinegal James D (Director) Sale 17,000 164.52 2,796,772
2017-02-03 Mckay John D (Executive Vice President) Sale 4,948 168.25 832,501
2017-01-11 Vachris Roland Michael (Executive VP) Sale 3,180 161.73 514,301
2017-01-10 Zook Dennis R (Executive VP) Sale 7,000 161.12 1,127,805
2017-01-06 Moulton Paul G (Executive VP) Sale 14,189 161.98 2,298,376
2016-12-28 Petterson David S (Other) Sale 700 161.13 112,793
2016-12-19 Sinegal James D (Director) Sale 65,000 164.07 10,664,355
2016-12-15 Galanti Richard A (Executive VP and CFO) Sale 2,644 160.65 424,561
2016-12-09 Moulton Paul G (Executive VP) Sale 11,715 158.93 1,861,818
2016-12-09 Portera Joseph P (Executive VP) Sale 16,921 158.38 2,679,998
2016-12-09 Petterson David S (Other) Sale 4,000 158.54 634,180
2016-11-15 Zook Dennis R (Executive VP) Sale 10,000 .00 0
2016-11-11 Galanti Richard A (Executive VP and CFO) Sale 3,111 148.89 463,203
2016-11-07 Galanti Richard A (Executive VP and CFO) Sale 1,930 143.53 277,018
2016-10-26 Petterson David S (Other) Sale 3,000 151.10 453,294
2016-10-25 Libenson Richard M (Director) Sale 2,385 151.00 360,135
2016-10-12 Rose Timothy L. (Executive VP) Sale 4,000 151.12 604,484
2016-10-07 Sinegal James D (Director) Sale 20,114 149.02 2,997,408
2016-08-17 Meisenbach John W (Director) Sale 5,737 167.74 962,347
2016-07-26 Ruckelshaus Jill S (Other) Sale 7,442 167.09 1,243,520
2016-07-13 Ruckelshaus Jill S (Other) Sale 6,180 166.03 1,026,083
2016-07-11 Mckay John D (Executive Vice President) Sale 7,500 166.58 1,249,372
2016-07-11 Schutt Douglas W (Former Executive VP) Sale 14,656 166.76 2,443,990
2016-07-11 Galanti Richard A (Executive VP and CFO) Sale 2,400 167.08 400,982
2016-03-31 Mckay John D (Executive Vice President) Sale 4,455 159.00 708,345
2016-03-24 Rose Timothy L. (Executive VP) Sale 1,777 151.25 268,771
2016-03-18 Lazarus Franz E (Executive VP) Sale 20,000 153.44 3,068,700
2016-03-17 Murphy James P. (Executive VP) Sale 15,000 154.45 2,316,720
2016-03-14 Zook Dennis R (Executive VP) Sale 4,075 152.96 623,291
2016-01-25 Sinegal James D (Director) Sale 44,125 151.97 6,705,852
2015-12-11 Sinegal James D (Director) Sale 50,000 160.00 8,000,149
2015-12-10 Moulton Paul G (Executive VP) Sale 19,095 162.64 3,105,572
2015-11-10 Stanton John W (Director) Buy 10,000 155.40 1,553,970
2015-10-30 Petterson David S (Other) Sale 3,800 158.62 602,737
2015-10-29 Murphy James P. (Executive VP) Sale 12,000 156.81 1,881,720
2015-10-29 Galanti Richard A (Executive VP and CFO) Sale 1,500 158.29 237,441
2015-10-27 Petterson David S (Other) Sale 3,738 157.50 588,749
2015-10-27 Galanti Richard A (Executive VP and CFO) Sale 3,452 157.30 542,992
2015-10-26 Schutt Douglas W (Executive VP) Sale 25,000 156.90 3,922,549
2015-10-26 Libenson Richard M (Director) Sale 2,790 154.00 429,660
2015-10-23 Libenson Richard M (Director) Sale 5,000 155.50 777,520
2015-10-13 Portera Joseph P (Executive VP) Sale 10,000 152.75 1,527,540
2015-10-12 Mckay John D (Executive Vice President) Sale 6,779 154.00 1,043,999
2015-10-12 Zook Dennis R (Executive VP) Sale 9,000 153.96 1,385,676
2015-10-09 Galanti Richard A (Executive VP and CFO) Sale 5,500 153.19 842,545
2015-10-09 Brotman Jeffrey H (Chairman of the Board) Sale 42,493 154.01 6,544,389
2015-07-30 Rose Timothy L. (Executive VP) Sale 1,415 145.58 205,995
2015-04-28 Rose Timothy L. (Executive VP) Sale 3,000 147.00 441,000
2015-04-02 Brotman Jeffrey H (Chairman of the Board) Sale 5,936 151.65 900,218
2015-04-01 Brotman Jeffrey H (Chairman of the Board) Sale 93,564 150.14 14,047,698
2015-03-13 Jelinek W Craig (President and CEO) Sale 4,184 149.25 624,482
2015-03-13 Jelinek W Craig (President and CEO) Option Ex 4,184 39.02 163,259
2015-03-12 Jelinek W Craig (President and CEO) Sale 20,000 147.92 2,958,360
2015-03-12 Jelinek W Craig (President and CEO) Option Ex 20,000 39.02 780,400
2015-03-11 Jelinek W Craig (President and CEO) Sale 20,000 147.81 2,956,220
2015-03-11 Jelinek W Craig (President and CEO) Option Ex 20,000 39.02 780,400
2015-03-10 Jelinek W Craig (President and CEO) Sale 20,000 148.72 2,974,500
2015-03-10 Jelinek W Craig (President and CEO) Option Ex 20,000 39.02 780,400
2015-03-09 Jelinek W Craig (President and CEO) Sale 20,000 150.71 3,014,200
2015-03-09 Jelinek W Craig (President and CEO) Option Ex 20,000 39.02 780,400
2015-03-06 Galanti Richard A (Executive VP and CFO) Sale 5,214 149.47 779,326
2015-03-06 Galanti Richard A (Executive VP and CFO) Option Ex 5,214 39.02 203,450
2015-03-06 Munger Charles T (Director) Option Ex 6,734 39.02 262,760
2015-01-29 Lazarus Franz E (Executive VP) Sale 10,000 139.83 1,398,260
2015-01-13 Rose Timothy L. (Executive VP) Sale 4,082 142.65 582,301
2015-01-12 Zook Dennis R (Executive VP) Sale 8,000 142.54 1,140,288
2014-12-18 Mckay John D (Executive Vice President) Sale 3,648 141.07 514,623
2014-12-17 Galanti Richard A (Executive VP and CFO) Sale 3,000 139.29 417,870
2014-12-15 Rose Timothy L. (Executive VP) Sale 5,000 139.01 695,050
2014-12-11 Rose Timothy L. (Executive VP) Sale 5,000 142.00 710,000
2014-11-13 Gates William H Ii (Director) Sale 1,200 138.18 165,813
2014-11-07 Murphy James P. (Executive VP) Sale 8,777 136.82 1,200,834
2014-11-07 Galanti Richard A (Executive VP and CFO) Sale 3,999 137.62 550,346
2014-10-30 Galanti Richard A (Executive VP and CFO) Sale 4,165 133.16 554,598
2014-10-29 Portera Joseph P (Executive VP) Sale 15,000 131.55 1,973,220
2014-10-29 Galanti Richard A (Executive VP and CFO) Sale 7,288 131.91 961,323
2014-10-24 Libenson Richard M (Director) Sale 20,889 129.67 2,708,739
2014-10-23 Petterson David S (Other) Sale 15,400 131.14 2,019,509
2014-10-13 Zook Dennis R (Executive VP) Sale 7,000 128.10 896,700
2014-10-09 Schutt Douglas W (Executive VP) Sale 15,000 130.23 1,953,390
2014-10-09 Portera Joseph P (Executive VP) Sale 4,685 130.13 609,640
2014-10-09 Galanti Richard A (Executive VP and CFO) Sale 4,065 130.54 530,645
2014-10-01 Lazarus Franz E (Executive VP) Sale 600 125.25 75,150
2014-09-02 Lazarus Franz E (Executive VP) Sale 600 121.00 72,600
2014-08-21 Rose Timothy L. (Executive VP) Sale 5,439 121.50 660,849
2014-08-20 Galanti Richard A (Executive VP and CFO) Sale 6,000 121.16 726,960
2014-08-20 Galanti Richard A (Executive VP and CFO) Option Ex 6,000 40.69 244,140
2014-08-15 Brotman Jeffrey H (Chairman of the Board) Sale 161,445 118.23 19,087,803
2014-08-15 Brotman Jeffrey H (Chairman of the Board) Option Ex 161,445 40.69 6,569,197
2014-08-14 Galanti Richard A (Executive VP and CFO) Sale 12,068 118.97 1,435,729
2014-08-14 Galanti Richard A (Executive VP and CFO) Option Ex 2,000 40.69 81,380
2014-08-11 Mckay John D (Executive Vice President) Sale 12,000 118.94 1,427,280
2014-08-11 James Hamilton E (Director) Sale 12,915 119.12 1,538,434
2014-08-11 James Hamilton E (Director) Option Ex 12,915 40.69 525,511
2014-08-01 Lazarus Franz E (Executive VP) Sale 600 117.80 70,680
2014-07-01 Lazarus Franz E (Executive VP) Sale 600 115.29 69,174
2014-06-17 Carson Benjamin Sr (Director) Sale 10,915 115.51 1,260,780
2014-06-17 Carson Benjamin Sr (Director) Option Ex 915 40.69 37,231
2014-06-06 Lazarus Franz E (Executive VP) Sale 10,000 117.69 1,176,900
2014-06-02 Lazarus Franz E (Executive VP) Sale 600 115.84 69,504
2014-05-15 Sinegal James D (Director) Sale 4,000 114.76 459,040
2014-05-01 Lazarus Franz E (Executive VP) Sale 600 115.69 69,414
2014-04-15 Sinegal James D (Director) Sale 4,000 112.58 450,320
2014-04-03 Murphy James P. (Executive VP) Sale 10,000 112.00 1,120,010
2014-04-01 Lazarus Franz E (Executive VP) Sale 600 112.16 67,296
2014-03-14 Mckay John D (Executive Vice President) Sale 3,000 114.00 342,000
2014-03-14 Sinegal James D (Director) Sale 4,000 114.00 456,000
2014-03-14 Jelinek W Craig (President and CEO) Sale 41,444 114.01 4,724,947
2014-03-14 Jelinek W Craig (President and CEO) Option Ex 41,444 34.71 1,438,521
2014-03-14 Galanti Richard A (Executive VP and CFO) Sale 15,164 114.65 1,738,507
2014-03-14 Galanti Richard A (Executive VP and CFO) Option Ex 12,000 40.69 488,280
2014-03-12 Rose Timothy L. (Executive VP) Sale 5,000 115.31 576,540
2014-03-03 Lazarus Franz E (Executive VP) Sale 600 116.12 69,672
2014-02-14 Sinegal James D (Director) Sale 4,000 114.99 459,960
2014-02-03 Lazarus Franz E (Executive VP) Sale 600 112.96 67,776
2014-01-15 Sinegal James D (Director) Sale 4,000 116.07 464,280
2014-01-15 Munger Charles T (Director) Option Ex 6,457 34.71 224,122
2014-01-02 Mckay John D (Executive Vice President) Sale 4,655 118.40 551,165
2014-01-02 Lazarus Franz E (Executive VP) Sale 600 118.71 71,226
2013-12-30 James Hamilton E (Director) Sale 11,900 118.76 1,413,196
2013-12-16 Sinegal James D (Director) Sale 8,000 117.92 943,360
2013-12-02 Lazarus Franz E (Executive VP) Sale 600 124.19 74,514
2013-11-15 Sinegal James D (Director) Sale 8,000 123.66 989,280
2013-11-15 Lazarus Franz E (Executive VP) Sale 600 123.66 74,196
2013-11-15 Brotman Jeffrey H (Chairman of the Board) Sale 58,946 124.33 7,328,579
2013-11-01 Mckay John D (Executive Vice President) Sale 4,000 118.93 475,724
2013-11-01 James Hamilton E (Director) Sale 12,915 118.76 1,533,772
2013-11-01 James Hamilton E (Director) Option Ex 12,915 34.71 448,279
2013-11-01 Galanti Richard A (Executive VP and CFO) Sale 17,081 119.18 2,035,764
2013-11-01 Galanti Richard A (Executive VP and CFO) Option Ex 15,000 40.69 610,350
2013-10-31 Galanti Richard A (Executive VP and CFO) Sale 2,081 118.11 245,786
2013-10-29 Portera Joseph P (Executive VP) Sale 14,900 118.29 1,762,521
2013-10-29 Galanti Richard A (Executive VP and CFO) Sale 7,289 118.53 863,957
2013-10-28 Libenson Richard M (Director) Sale 11,376 116.65 1,327,010
2013-10-25 Petterson David S (Other) Sale 3,905 115.95 452,784
2013-10-24 Libenson Richard M (Director) Sale 9,791 116.67 1,142,315
2013-10-24 Petterson David S (Other) Sale 2,500 116.14 290,350
2013-10-22 Petterson David S (Other) Sale 2,500 117.09 292,725
2013-10-16 Zook Dennis R (Executive VP) Sale 10,000 116.37 1,163,700
2013-10-15 Sinegal James D (Director) Sale 8,000 115.76 926,080
2013-09-16 Sinegal James D (Director) Sale 8,000 118.36 946,880
 1   2   3   4 

Insider trading activities including stock purchases, stock sales, and option exercises of COST listed in the above tables cannot be completely guaranteed as to their accuracy. For more insider trading information of Costco Wholesale Corp /new (symbol COST, CIK number 909832) see the Securities and Exchange Commission (SEC) website.