Insider Trading activities of Comcast Corp insiders.

Monthly summaries of insider trading activities (stock purchases, sales, and option exercises) reported by insiders of Comcast Corp since 2005 are illustrated in Table 1 and Table 2. Table 1 shows the monthly insider trading data of Comcast Corp since year 2005. Table 2 shows the detailed insider transactions of Comcast Corp since 2005. The reporting company's ticker symbol is CMCSA. The reporting company's CIK number is 1166691.
The total value of stock buying since 2005 is $2,897,650.
The total value of stock sales since 2005 is $441,893,985.
The total value of stock option exercises since 2005 is $578,843,382.


Table 1. Monthly summaries of insider stock purchases, sales, and option exercises for Comcast Corp (CMCSA).
Trading Period Insider Buying Insider Sales Option Exercises
year-month Shares Value Shares Value Shares Value
2017-10 0 $0 0 $0 14,376 $0
2017-09 0 $0 6,323 $240,105 9,900 $93,951
2017-08 0 $0 3,659 $144,914 40,320 $0
2017-06 0 $0 0 $0 2,580 $0
2017-05 0 $0 265,880 $10,381,565 270,732 $2,156,774
2017-04 0 $0 2,356 $89,103 159,389 $0
2017-03 0 $0 90,730 $3,387,277 650,046 $1,508,966
2017-02 0 $0 71,158 $5,373,737 814,440 $20,541,371
2017-01 0 $0 133,314 $10,039,709 355,846 $7,033,116
2016-12 0 $0 21,736 $1,516,854 10,227 $112,801
2016-11 0 $0 6,752 $471,877 51,590 $1,729,987
2016-10 0 $0 59,430 $3,822,356 169,200 $3,697,942
2016-09 0 $0 16,144 $1,060,434 3,370 $85,732
2016-07 0 $0 333,584 $22,453,720 0 $0
2016-06 0 $0 17,866 $1,132,213 15,447 $0
2016-05 0 $0 275,635 $17,221,228 100,040 $1,966,086
2016-04 0 $0 1,002 $61,372 37,161 $0
2016-03 0 $0 20,366 $1,202,889 356,720 $357,891
2016-02 0 $0 4,000 $232,696 0 $0
2016-01 0 $0 4,307 $236,990 105,289 $145,158
2015-12 0 $0 2,258 $128,444 6,543 $112,801
2015-11 0 $0 6,085 $377,821 0 $0
2015-10 0 $0 137,616 $8,644,704 0 $0
2015-09 0 $0 67,590 $3,799,393 198,763 $3,857,853
2015-08 0 $0 67,642 $4,022,511 191,125 $3,850,595
2015-07 0 $0 98,106 $6,236,491 177,351 $3,044,797
2015-06 0 $0 387,411 $22,587,220 1,013,088 $24,893,352
2015-05 0 $0 51,232 $2,964,875 0 $0
2015-04 0 $0 62,319 $3,594,433 321,927 $3,663,415
2015-03 0 $0 193,093 $11,366,080 1,615,168 $17,771,727
2015-02 0 $0 380,732 $22,488,309 292,500 $6,628,050
2015-01 0 $0 0 $0 689,891 $0
2014-12 0 $0 39,829 $2,243,776 145,243 $2,563,034
2014-11 0 $0 135,533 $7,378,158 248,402 $5,550,324
2014-10 0 $0 38,379 $2,062,971 110,000 $2,492,600
2014-09 0 $0 8,386 $460,332 14,925 $305,946
2014-08 0 $0 159,586 $8,575,528 434,038 $8,442,272
2014-07 0 $0 11,000 $611,886 0 $0
2014-06 0 $0 11,928 $631,921 11,250 $222,671
2014-05 0 $0 57,577 $2,975,802 181,250 $3,350,701
2014-04 0 $0 112,154 $5,731,590 252,753 $1,974,830
2014-03 0 $0 619,283 $31,305,098 3,277,917 $47,846,607
2014-02 0 $0 34,769 $1,836,826 30,542 $566,737
2014-01 0 $0 0 $0 20,945 $0
2013-12 0 $0 0 $0 610,524 $10,507,402
2013-11 0 $0 40,032 $1,927,404 121,997 $1,799,086
2013-09 0 $0 16,259 $726,126 68,770 $1,527,381
2013-08 0 $0 19,996 $898,780 481,800 $9,144,564
2013-06 0 $0 144,070 $5,978,905 0 $0
2013-05 0 $0 83,932 $3,578,314 1,266,861 $25,770,794
2013-04 0 $0 12,512 $517,415 247,845 $0
2013-03 0 $0 14,532 $593,397 798,890 $0
2013-02 0 $0 35,595 $1,463,363 36,991 $695,319
2013-01 0 $0 0 $0 57,533 $0
2012-12 0 $0 666,722 $24,234,996 6,024 $0
2012-11 0 $0 551,257 $20,253,825 679,200 $13,250,965
2012-10 0 $0 88,623 $3,296,113 292,541 $5,311,752
2012-09 0 $0 493,716 $16,681,655 1,522,500 $30,109,100
2012-08 0 $0 176,858 $5,946,198 717,973 $13,197,076
2012-06 0 $0 0 $0 18,444 $281,695
2012-05 0 $0 238,403 $6,960,915 65,275 $187,503
2012-04 0 $0 108,774 $3,249,935 176,785 $101,317
2012-03 0 $0 512,008 $15,037,634 1,089,330 $4,800,500
2012-02 0 $0 563,042 $16,078,160 4,033,758 $70,248,911
2012-01 0 $0 0 $0 3,576,078 $83,639,100
2011-12 0 $0 0 $0 6,024 $0
2011-07 0 $0 0 $0 168,635 $0
2011-06 0 $0 0 $0 2,986 $57,668
2011-05 25,000 $633,325 419 $10,759 75,088 $60,238
2011-04 0 $0 0 $0 166,260 $0
2011-03 0 $0 209,919 $5,178,026 793,705 $0
2011-02 0 $0 246,257 $5,881,663 1,241,625 $20,011,605
2011-01 0 $0 30,000 $633,210 220,821 $0
2010-12 0 $0 48,116 $978,841 0 $0
2010-11 0 $0 68,663 $1,389,157 5,527 $0
2010-08 0 $0 625,000 $11,683,125 0 $0
2010-05 30,000 $506,580 15,043 $307,779 0 $0
2010-04 0 $0 0 $0 216,960 $0
2010-03 0 $0 15,375 $283,976 207,809 $0
2010-01 0 $0 0 $0 7,876 $0
2009-11 0 $0 0 $0 19,575 $0
2009-04 0 $0 0 $0 140,820 $0
2009-03 0 $0 0 $0 464,167 $0
2009-01 0 $0 0 $0 145,002 $0
2008-11 0 $0 78,062 $1,271,759 19,575 $0
2008-05 0 $0 269,097 $5,858,862 4,878,272 $55,134,868
2008-04 0 $0 0 $0 119,535 $0
2008-03 0 $0 0 $0 332,483 $0
2008-01 0 $0 0 $0 259,035 $1,568,385
2007-12 0 $0 0 $0 191,133 $1,903,302
2007-11 12,000 $233,470 0 $0 19,575 $0
2007-08 0 $0 0 $0 1,660,000 $18,743,060
2007-06 37,900 $998,475 235,792 $6,384,304 0 $0
2007-05 0 $0 350,000 $9,411,816 0 $0
2007-04 0 $0 0 $0 165,741 $0
2007-03 0 $0 0 $0 188,551 $0
2007-02 0 $0 0 $0 5,250 $0
2007-01 0 $0 0 $0 173,450 $1,156,496
2006-12 0 $0 0 $0 87,500 $803,862
2006-11 0 $0 831,334 $33,532,963 1,961,758 $32,185,146
2006-08 0 $0 0 $0 55,332 $0
2006-07 0 $0 15,000 $481,500 0 $0
2006-04 0 $0 0 $0 8,000 $0
2006-03 0 $0 0 $0 108,302 $78,200
2006-01 0 $0 0 $0 50,000 $0
2005-12 20,000 $525,800 0 $0 0 $0
2005-08 0 $0 66,924 $2,089,902 0 $0

Table 2. Detailed insider stock purchases, sales, and option exercises of Comcast Corp insiders (CMCSA)
  Trade Date   Insider Name Trade Type     Shares       Price ($)   Value ($)
2017-10-30 Cohen David L (Sr. EVP) Option Ex 14,376 .00 0
2017-09-28 Block Arthur R (EVP, GC and Secretary) Sale 4,091 38.36 156,930
2017-09-28 Block Arthur R (EVP, GC and Secretary) Option Ex 9,900 9.49 93,951
2017-09-15 Bacon Kenneth J (Director) Sale 2,232 37.27 83,175
2017-08-10 Watson David N (Sr. EVP) Option Ex 40,320 .00 0
2017-08-07 Murdock Daniel C. (SVP & Chief Accounting Officer) Sale 3,659 39.60 144,914
2017-06-12 Murdock Daniel C. (SVP & Chief Accounting Officer) Option Ex 2,580 .00 0
2017-05-25 Bacon Kenneth J (Director) Sale 7,500 40.49 303,712
2017-05-15 Cavanagh Michael J (CFO) Option Ex 21,192 .00 0
2017-05-10 Burke Stephen B (Sr. EVP) Sale 258,380 39.00 10,077,853
2017-05-09 Burke Stephen B (Sr. EVP) Option Ex 249,540 8.64 2,156,774
2017-04-19 Block Arthur R (EVP, GC and Secretary) Sale 2,356 37.82 89,103
2017-04-18 Murdock Daniel C. (SVP & Chief Accounting Officer) Option Ex 1,020 .00 0
2017-04-18 Cavanagh Michael J (CFO) Option Ex 81,500 .00 0
2017-04-18 Watson David N (Sr. EVP) Option Ex 6,270 .00 0
2017-04-18 Block Arthur R (EVP, GC and Secretary) Option Ex 4,410 .00 0
2017-04-18 Cohen David L (Sr. EVP) Option Ex 18,840 .00 0
2017-04-18 Burke Stephen B (Sr. EVP) Option Ex 26,850 .00 0
2017-04-18 Roberts Brian L (Chairman of Board, Pres. & CEO) Option Ex 20,499 .00 0
2017-03-28 Block Arthur R (EVP, GC and Secretary) Sale 4,044 36.95 149,437
2017-03-28 Block Arthur R (EVP, GC and Secretary) Option Ex 9,900 9.49 93,951
2017-03-27 Block Arthur R (EVP, GC and Secretary) Sale 15,846 37.18 589,170
2017-03-27 Block Arthur R (EVP, GC and Secretary) Option Ex 38,580 9.65 372,297
2017-03-24 Block Arthur R (EVP, GC and Secretary) Sale 10,215 37.24 380,406
2017-03-23 Smit Neil (Sr. EVP) Option Ex 106,640 .00 0
2017-03-23 Block Arthur R (EVP, GC and Secretary) Sale 12,303 37.00 455,211
2017-03-23 Block Arthur R (EVP, GC and Secretary) Option Ex 48,250 7.50 361,778
2017-03-23 Cohen David L (Sr. EVP) Option Ex 100,480 .00 0
2017-03-23 Burke Stephen B (Sr. EVP) Option Ex 125,680 .00 0
2017-03-22 Block Arthur R (EVP, GC and Secretary) Sale 8,269 37.14 307,143
2017-03-22 Block Arthur R (EVP, GC and Secretary) Option Ex 29,640 10.30 305,440
2017-03-22 Cohen David L (Sr. EVP) Option Ex 27,450 .00 0
2017-03-22 Burke Stephen B (Sr. EVP) Option Ex 34,290 .00 0
2017-03-21 Block Arthur R (EVP, GC and Secretary) Sale 7,053 37.48 264,318
2017-03-21 Block Arthur R (EVP, GC and Secretary) Option Ex 30,040 12.50 375,500
2017-03-21 Cohen David L (Sr. EVP) Option Ex 16,590 .00 0
2017-03-21 Burke Stephen B (Sr. EVP) Option Ex 32,100 .00 0
2017-03-20 Block Arthur R (EVP, GC and Secretary) Option Ex 4,410 .00 0
2017-03-20 Cohen David L (Sr. EVP) Option Ex 13,950 .00 0
2017-03-20 Burke Stephen B (Sr. EVP) Option Ex 32,046 .00 0
2017-03-01 Smit Neil (Sr. EVP) Sale 33,000 37.62 1,241,592
2017-02-14 Salva Lawrence J (EVP & Chief Accounting Officer) Sale 3,121 75.96 237,080
2017-02-14 Salva Lawrence J (EVP & Chief Accounting Officer) Option Ex 6,740 25.44 171,465
2017-02-06 Roberts Brian L (Chairman of Board, Pres. & CEO) Option Ex 548,000 25.44 13,941,120
2017-02-03 Smit Neil (Sr. EVP) Sale 39,730 75.28 2,990,874
2017-02-03 Smit Neil (Sr. EVP) Option Ex 122,100 29.99 3,661,779
2017-02-01 Smit Neil (Sr. EVP) Sale 28,307 75.80 2,145,783
2017-02-01 Smit Neil (Sr. EVP) Option Ex 69,030 18.34 1,266,010
2017-02-01 Burke Stephen B (Sr. EVP) Option Ex 68,570 21.89 1,500,997
2017-01-30 Smit Neil (Sr. EVP) Sale 46,849 75.47 3,535,553
2017-01-30 Smit Neil (Sr. EVP) Option Ex 129,300 25.02 3,235,086
2017-01-27 Smit Neil (Sr. EVP) Sale 86,465 75.22 6,504,156
2017-01-27 Smit Neil (Sr. EVP) Option Ex 207,090 18.34 3,798,030
2017-01-13 Bonovitz Sheldon M (Director) Option Ex 3,004 .00 0
2017-01-03 Breen Edward D (Director) Option Ex 6,299 .00 0
2017-01-03 Bacon Kenneth J (Director) Option Ex 3,092 .00 0
2017-01-03 Bonovitz Sheldon M (Director) Option Ex 2,092 .00 0
2017-01-03 Rodgers Johnathan A (Director) Option Ex 3,101 .00 0
2017-01-03 Rodin Judith (Director) Option Ex 1,868 .00 0
2016-12-27 Block Arthur R (EVP, GC and Secretary) Sale 1,680 70.80 118,944
2016-12-23 Block Arthur R (EVP, GC and Secretary) Option Ex 3,684 .00 0
2016-12-19 Block Arthur R (EVP, GC and Secretary) Sale 2,435 70.17 170,871
2016-12-19 Block Arthur R (EVP, GC and Secretary) Option Ex 6,543 17.24 112,801
2016-12-13 Bacon Kenneth J (Director) Sale 2,500 70.05 175,117
2016-12-01 Smit Neil (Sr. EVP) Sale 15,121 69.57 1,051,922
2016-11-30 Cohen David L (Sr. EVP) Option Ex 7,188 .00 0
2016-11-29 Block Arthur R (EVP, GC and Secretary) Sale 6,752 69.89 471,877
2016-11-29 Block Arthur R (EVP, GC and Secretary) Option Ex 37,930 45.61 1,729,987
2016-11-18 Bonovitz Sheldon M (Director) Option Ex 6,472 .00 0
2016-10-27 Cohen David L (Sr. EVP) Sale 19,886 62.39 1,240,607
2016-10-27 Cohen David L (Sr. EVP) Option Ex 55,700 21.13 1,177,108
2016-10-19 Cohen David L (Sr. EVP) Sale 20,100 65.05 1,307,545
2016-10-19 Cohen David L (Sr. EVP) Option Ex 56,750 22.21 1,260,417
2016-10-11 Cohen David L (Sr. EVP) Sale 19,444 65.53 1,274,204
2016-10-11 Cohen David L (Sr. EVP) Option Ex 56,750 22.21 1,260,417
2016-09-16 Block Arthur R (EVP, GC and Secretary) Sale 1,023 65.75 67,257
2016-09-16 Block Arthur R (EVP, GC and Secretary) Option Ex 3,370 25.44 85,732
2016-09-01 Smit Neil (Sr. EVP) Sale 15,121 65.68 993,177
2016-07-29 Smit Neil (Sr. EVP) Sale 29,475 67.86 2,000,261
2016-07-29 Roberts Brian L (Chairman of Board, Pres. & CEO) Sale 304,109 67.26 20,453,459
2016-06-27 Salva Lawrence J (EVP & Chief Accounting Officer) Option Ex 4,851 .00 0
2016-06-16 Bacon Kenneth J (Director) Sale 2,500 62.82 157,060
2016-06-15 Cavanagh Michael J (CFO) Option Ex 10,596 .00 0
2016-06-09 Rodin Judith (Director) Sale 245 62.83 15,393
2016-06-01 Smit Neil (Sr. EVP) Sale 15,121 63.47 959,760
2016-05-12 Burke Stephen B (Sr. EVP) Sale 75,000 62.05 4,653,450
2016-05-12 Burke Stephen B (Sr. EVP) Option Ex 100,040 19.65 1,966,086
2016-05-10 Roberts Brian L (Chairman of Board, Pres. & CEO) Sale 200,000 62.65 12,529,200
2016-05-02 Rodin Judith (Director) Sale 635 60.75 38,578
2016-04-21 Block Arthur R (EVP, GC and Secretary) Sale 1,002 61.25 61,372
2016-04-20 Block Arthur R (EVP, GC and Secretary) Option Ex 2,205 .00 0
2016-04-20 Salva Lawrence J (EVP & Chief Accounting Officer) Option Ex 1,635 .00 0
2016-04-20 Cohen David L (Sr. EVP) Option Ex 6,975 .00 0
2016-04-20 Burke Stephen B (Sr. EVP) Option Ex 16,023 .00 0
2016-04-20 Roberts Brian L (Chairman of Board, Pres. & CEO) Option Ex 10,323 .00 0
2016-03-24 Smit Neil (Sr. EVP) Option Ex 47,920 .00 0
2016-03-24 Block Arthur R (EVP, GC and Secretary) Sale 1,630 58.76 95,778
2016-03-24 Block Arthur R (EVP, GC and Secretary) Option Ex 11,440 .00 0
2016-03-24 Salva Lawrence J (EVP & Chief Accounting Officer) Option Ex 10,440 .00 0
2016-03-24 Cohen David L (Sr. EVP) Option Ex 60,200 .00 0
2016-03-24 Burke Stephen B (Sr. EVP) Option Ex 75,240 .00 0
2016-03-23 Smit Neil (Sr. EVP) Option Ex 19,995 .00 0
2016-03-23 Block Arthur R (EVP, GC and Secretary) Sale 4,739 59.26 280,833
2016-03-23 Block Arthur R (EVP, GC and Secretary) Option Ex 18,150 14.99 272,159
2016-03-23 Salva Lawrence J (EVP & Chief Accounting Officer) Option Ex 3,255 .00 0
2016-03-23 Cohen David L (Sr. EVP) Option Ex 18,840 .00 0
2016-03-23 Burke Stephen B (Sr. EVP) Option Ex 23,565 .00 0
2016-03-22 Block Arthur R (EVP, GC and Secretary) Sale 982 59.30 58,232
2016-03-22 Block Arthur R (EVP, GC and Secretary) Option Ex 2,610 .00 0
2016-03-22 Salva Lawrence J (EVP & Chief Accounting Officer) Option Ex 2,370 .00 0
2016-03-22 Cohen David L (Sr. EVP) Option Ex 13,725 .00 0
2016-03-22 Burke Stephen B (Sr. EVP) Option Ex 17,145 .00 0
2016-03-21 Block Arthur R (EVP, GC and Secretary) Option Ex 2,160 .00 0
2016-03-21 Salva Lawrence J (EVP & Chief Accounting Officer) Option Ex 1,950 .00 0
2016-03-21 Cohen David L (Sr. EVP) Option Ex 8,295 .00 0
2016-03-21 Burke Stephen B (Sr. EVP) Option Ex 16,050 .00 0
2016-03-16 Block Arthur R (EVP, GC and Secretary) Sale 949 59.22 56,201
2016-03-16 Block Arthur R (EVP, GC and Secretary) Option Ex 3,370 25.44 85,732
2016-03-14 Cook J Michael (Director) Sale 12,066 59.00 711,845
2016-02-05 Bacon Kenneth J (Director) Sale 4,000 58.17 232,696
2016-01-27 Block Arthur R (EVP, GC and Secretary) Sale 1,675 54.93 92,007
2016-01-26 Smit Neil (Sr. EVP) Option Ex 68,511 .00 0
2016-01-26 Block Arthur R (EVP, GC and Secretary) Option Ex 3,684 .00 0
2016-01-08 Block Arthur R (EVP, GC and Secretary) Sale 2,632 55.09 144,983
2016-01-08 Block Arthur R (EVP, GC and Secretary) Option Ex 8,063 18.00 145,158
2016-01-04 Bacon Kenneth J (Director) Option Ex 5,639 .00 0
2016-01-04 Rodgers Johnathan A (Director) Option Ex 10,161 .00 0
2016-01-04 Cook J Michael (Director) Option Ex 9,231 .00 0
2015-12-18 Block Arthur R (EVP, GC and Secretary) Sale 2,258 56.88 128,444
2015-12-18 Block Arthur R (EVP, GC and Secretary) Option Ex 6,543 17.24 112,801
2015-11-24 Bonovitz Sheldon M (Director) Sale 2,597 61.37 159,385
2015-11-19 Bacon Kenneth J (Director) Sale 3,488 62.62 218,436
2015-10-29 Roberts Brian L (Chairman of Board, Pres. & CEO) Sale 106,883 63.10 6,744,637
2015-10-28 Smit Neil (Sr. EVP) Sale 30,733 61.83 1,900,067
2015-09-16 Salva Lawrence J (EVP & Chief Accounting Officer) Sale 4,524 57.50 260,130
2015-09-16 Salva Lawrence J (EVP & Chief Accounting Officer) Option Ex 13,013 18.33 238,515
2015-09-10 Cohen David L (Sr. EVP) Sale 63,066 56.12 3,539,263
2015-09-10 Cohen David L (Sr. EVP) Option Ex 185,750 19.48 3,619,338
2015-08-10 Cohen David L (Sr. EVP) Sale 65,384 59.35 3,880,605
2015-08-10 Cohen David L (Sr. EVP) Option Ex 191,125 20.15 3,850,595
2015-08-03 Block Arthur R (EVP, GC and Secretary) Sale 2,258 62.85 141,906
2015-07-31 Smit Neil (Sr. EVP) Sale 30,732 62.75 1,928,463
2015-07-27 Salva Lawrence J (EVP & Chief Accounting Officer) Option Ex 4,851 .00 0
2015-07-13 Cohen David L (Sr. EVP) Sale 67,374 63.94 4,308,028
2015-07-13 Cohen David L (Sr. EVP) Option Ex 172,500 17.65 3,044,797
2015-06-30 Block Arthur R (EVP, GC and Secretary) Option Ex 4,855 .00 0
2015-06-30 Salva Lawrence J (EVP & Chief Accounting Officer) Option Ex 4,404 .00 0
2015-06-08 Angelakis Michael J (Vice Chairman and CFO) Sale 382,566 58.29 22,300,154
2015-06-08 Angelakis Michael J (Vice Chairman and CFO) Option Ex 989,027 24.86 24,590,178
2015-06-03 Salva Lawrence J (EVP & Controller) Sale 4,845 59.25 287,066

Insider trading activities including stock purchases, stock sales, and option exercises of CMCSA listed in the above tables cannot be completely guaranteed as to their accuracy. For more insider trading information of Comcast Corp (symbol CMCSA, CIK number 1166691) see the Securities and Exchange Commission (SEC) website.