Insider Trading activities of Cogent Communications Holdings, Inc. insiders.

Monthly summaries of insider trading activities (stock purchases, sales, and option exercises) reported by insiders of Cogent Communications Holdings, Inc. since 2005 are illustrated in Table 1 and Table 2. Table 1 shows the monthly insider trading data of Cogent Communications Holdings, Inc. since year 2005. Table 2 shows the detailed insider transactions of Cogent Communications Holdings, Inc. since 2005. The reporting company's ticker symbol is CCOI. The reporting company's CIK number is 1158324.
The total value of stock buying since 2005 is $1,242,724.
The total value of stock sales since 2005 is $465,844,167.
The total value of stock option exercises since 2005 is $1,547,432.


Table 1. Monthly summaries of insider stock purchases, sales, and option exercises for Cogent Communications Holdings, Inc. (CCOI).
Trading Period Insider Buying Insider Sales Option Exercises
year-month Shares Value Shares Value Shares Value
2017-12 700 $31,709 17,375 $802,657 0 $0
2017-10 0 $0 2,000 $97,500 0 $0
2017-09 0 $0 19,716 $920,020 0 $0
2017-08 0 $0 15,750 $685,683 0 $0
2017-07 0 $0 1,000 $40,250 0 $0
2017-06 0 $0 14,183 $574,553 0 $0
2017-05 0 $0 1,000 $45,050 0 $0
2017-04 0 $0 6,000 $265,059 0 $0
2017-03 0 $0 17,019 $706,704 0 $0
2017-02 0 $0 7,450 $315,785 0 $0
2017-01 0 $0 26,000 $1,085,346 0 $0
2016-12 0 $0 9,000 $345,370 0 $0
2016-11 0 $0 3,800 $140,008 0 $0
2016-10 0 $0 3,000 $108,186 0 $0
2016-09 0 $0 5,822 $207,472 0 $0
2016-08 0 $0 3,233 $136,504 0 $0
2016-07 0 $0 4,000 $161,899 0 $0
2016-06 0 $0 9,000 $360,679 0 $0
2016-05 0 $0 17,250 $676,074 0 $0
2016-04 0 $0 7,000 $276,243 0 $0
2016-03 0 $0 15,000 $562,267 0 $0
2016-02 0 $0 12,250 $444,781 0 $0
2016-01 0 $0 2,000 $67,820 0 $0
2015-12 0 $0 3,000 $101,371 0 $0
2015-11 0 $0 13,000 $444,959 0 $0
2015-10 0 $0 3,000 $81,577 0 $0
2015-09 0 $0 5,200 $143,743 0 $0
2015-08 0 $0 3,000 $94,919 3,800 $18,544
2015-07 0 $0 3,000 $100,409 0 $0
2015-06 0 $0 8,450 $261,497 0 $0
2015-05 0 $0 3,000 $105,212 0 $0
2015-04 0 $0 3,000 $105,859 0 $0
2015-03 0 $0 11,250 $396,188 0 $0
2015-02 0 $0 11,600 $446,153 0 $0
2015-01 0 $0 12,000 $443,676 0 $0
2014-12 0 $0 5,500 $188,498 0 $0
2014-11 0 $0 18,500 $645,658 0 $0
2014-10 0 $0 3,500 $115,637 0 $0
2014-09 0 $0 8,750 $300,259 0 $0
2014-08 0 $0 14,750 $492,652 0 $0
2014-07 0 $0 2,500 $87,345 0 $0
2014-06 0 $0 12,000 $425,496 0 $0
2014-05 0 $0 3,750 $132,120 0 $0
2014-04 0 $0 2,500 $90,517 0 $0
2014-03 0 $0 5,000 $184,260 0 $0
2014-02 0 $0 2,000 $82,158 700 $3,416
2014-01 0 $0 6,500 $259,664 0 $0
2013-12 0 $0 4,500 $174,729 1,800 $8,784
2013-11 0 $0 1,500 $52,848 0 $0
2013-10 0 $0 4,500 $147,333 0 $0
2013-09 0 $0 4,000 $124,289 0 $0
2013-08 0 $0 8,998 $278,226 0 $0
2013-07 0 $0 8,152 $238,478 0 $0
2013-06 0 $0 16,000 $437,975 0 $0
2013-05 0 $0 25,250 $729,042 0 $0
2013-04 0 $0 8,700 $240,318 0 $0
2013-03 0 $0 27,350 $701,463 0 $0
2013-02 0 $0 34,600 $866,889 0 $0
2013-01 0 $0 2,500 $58,827 0 $0
2012-12 0 $0 18,000 $396,550 0 $0
2012-11 0 $0 19,000 $406,297 0 $0
2012-10 0 $0 4,800 $101,259 0 $0
2012-09 0 $0 11,000 $231,676 0 $0
2012-08 0 $0 17,000 $331,755 0 $0
2012-07 0 $0 7,900 $155,170 0 $0
2012-06 0 $0 1,000 $17,777 0 $0
2012-05 0 $0 4,000 $73,312 0 $0
2012-04 0 $0 7,900 $146,485 0 $0
2012-03 0 $0 25,850 $491,008 3,500 $17,080
2012-02 0 $0 86,112 $1,567,003 0 $0
2012-01 0 $0 9,250 $165,079 0 $0
2011-12 0 $0 41,125 $697,272 3,125 $15,250
2011-11 0 $0 17,700 $292,334 0 $0
2011-10 0 $0 11,500 $165,306 0 $0
2011-09 0 $0 1,000 $13,285 0 $0
2011-08 0 $0 1,000 $13,260 0 $0
2011-07 0 $0 21,250 $359,152 3,500 $17,080
2011-06 0 $0 17,250 $270,208 0 $0
2011-05 0 $0 5,000 $72,755 0 $0
2011-04 0 $0 75,190 $979,691 0 $0
2011-03 0 $0 15,000 $232,651 0 $0
2011-02 0 $0 4,195 $59,713 0 $0
2011-01 20,425 $289,346 12,791 $184,872 3,125 $15,250
2010-12 0 $0 5,354 $67,607 0 $0
2010-11 0 $0 37,251 $437,692 0 $0
2010-10 0 $0 16,916 $171,938 0 $0
2010-09 0 $0 2,854 $25,531 0 $0
2010-08 0 $0 1,416 $12,254 0 $0
2010-07 0 $0 2,666 $20,017 0 $0
2010-06 0 $0 2,354 $21,109 0 $0
2010-05 0 $0 916 $9,075 0 $0
2010-04 0 $0 6,666 $68,596 0 $0
2010-03 0 $0 4,916 $52,007 0 $0
2010-02 0 $0 1,916 $21,057 0 $0
2010-01 43,219 $472,358 12,816 $139,404 0 $0
2009-12 0 $0 2,666 $25,026 76,930 $0
2009-11 0 $0 1,916 $17,017 200,000 $0
2009-10 0 $0 49,666 $610,476 0 $0
2009-09 0 $0 22,566 $257,145 10,000 $60,000
2009-08 0 $0 57,016 $615,729 40,000 $240,000
2009-07 0 $0 5,941 $48,934 100,000 $0
2009-06 0 $0 3,166 $25,991 0 $0
2009-05 0 $0 416 $3,523 100,000 $0
2009-04 0 $0 67,941 $585,162 0 $0
2009-03 0 $0 13,467 $96,069 100,000 $0
2009-01 66,727 $449,311 16,000 $105,045 0 $0
2008-12 0 $0 11,574 $63,520 284 $0
2008-11 0 $0 500 $2,287 2,324 $0
2008-10 0 $0 1,500 $11,103 6,000 $24,400
2008-09 0 $0 500 $4,584 0 $0
2008-08 0 $0 500 $5,328 7,500 $36,600
2008-07 0 $0 500 $6,504 0 $0
2008-06 0 $0 5,619 $82,730 2,203 $6,100
2008-05 0 $0 2,051 $44,950 1,635 $4,880
2008-04 0 $0 2,478 $48,268 1,260 $3,050
2008-03 0 $0 2,651 $49,308 21,035 $45,872
2008-02 0 $0 13,937 $259,557 635 $0
2008-01 0 $0 2,510 $50,531 2,510 $9,150
2007-12 0 $0 3,082 $66,138 2,121 $2,052
2007-11 0 $0 1,641 $41,232 680 $0
2007-10 0 $0 2,266 $59,977 1,305 $3,050
2007-09 0 $0 4,241 $102,546 3,280 $9,760
2007-08 0 $0 42,266 $1,073,018 56,305 $333,050
2007-07 0 $0 44,266 $1,494,312 43,305 $243,050
2007-06 0 $0 10,866 $299,314 9,905 $51,050
2007-05 0 $0 14,641 $373,910 8,680 $24,000
2007-04 0 $0 10,266 $256,953 9,305 $51,050
2007-03 0 $0 11,482,060 $268,791,867 15,030 $58,614
2007-02 0 $0 9,180 $201,970 9,180 $48,000
2007-01 0 $0 1,015,306 $20,254,281 15,305 $51,050
2006-12 0 $0 5,818 $90,867 4,967 $0
2006-11 0 $0 7,517,092 $110,393,456 11,400 $15,250
2006-10 0 $0 14,469 $182,206 8,275 $48,000
2006-09 0 $0 4,327 $42,970 875 $0
2006-08 0 $0 5,955 $52,422 275 $0
2006-07 0 $0 1,969 $18,171 275 $0
2006-06 0 $0 3,637,631 $31,019,584 275 $0
2006-05 0 $0 14,755 $170,482 14,275 $84,000
2006-04 0 $0 2,755 $27,953 0 $0
2006-03 0 $0 15,695 $135,397 0 $0
2006-02 0 $0 11,307 $71,731 0 $0
2006-01 0 $0 10,000 $64,000 0 $0
2005-12 0 $0 44,830 $264,312 0 $0

Table 2. Detailed insider stock purchases, sales, and option exercises of Cogent Communications Holdings, Inc. insiders (CCOI)
  Trade Date   Insider Name Trade Type     Shares       Price ($)   Value ($)
2017-12-15 Montagner Marc Sale 5,000 47.00 235,000
2017-12-15 Weingarten Tim Sale 2,125 47.02 99,921
2017-12-08 Oneill Timothy G (VP Field Engineering) Sale 2,000 45.65 91,292
2017-12-07 Weed Thaddeus Gerard (VP, CFO & Treasurer) Sale 2,000 45.81 91,616
2017-12-06 Kilmer Henry W (VP of IP Engineering) Sale 3,000 44.54 133,632
2017-12-05 Liebhaber Richard Buy 700 45.30 31,709
2017-12-01 Bubeck James (Chief Revenue Officer) Sale 250 46.66 11,663
2017-12-01 Beury Robert N Jr (VP & Chief Legal Officer) Sale 3,000 46.51 139,533
2017-10-02 Oneill Timothy G (VP Field Engineering) Sale 2,000 48.75 97,500
2017-09-14 Weingarten Tim Sale 1,616 45.97 74,287
2017-09-14 Kummer Raymond B (CTO; VP Optical Transport) Sale 3,000 46.75 140,250
2017-09-13 Kummer Raymond B (CTO; VP Optical Transport) Sale 1,000 46.24 46,242
2017-09-05 Kilmer Henry W (VP of IP Engineering) Sale 3,000 46.45 139,350
2017-09-01 Weingarten Tim Sale 1,100 46.69 51,359
2017-09-01 Kummer Raymond B (CTO; VP Optical Transport) Sale 3,000 46.86 140,577
2017-09-01 Beury Robert N Jr (VP & Chief Legal Officer) Sale 3,000 46.75 140,262
2017-09-01 Weed Thaddeus Gerard (VP, CFO & Treasurer) Sale 3,000 47.03 141,093
2017-09-01 Oneill Timothy G (VP Field Engineering) Sale 1,000 46.60 46,600
2017-08-31 Kummer Raymond B (CTO; VP Optical Transport) Sale 1,800 45.78 82,400
2017-08-30 Kummer Raymond B (CTO; VP Optical Transport) Sale 200 45.77 9,155
2017-08-11 Bubeck James (Chief Revenue Officer) Sale 500 43.56 21,781
2017-08-07 Brooks Steven D Sale 10,000 43.25 432,500
2017-08-07 Weed Thaddeus Gerard (VP, CFO & Treasurer) Sale 2,250 43.51 97,897
2017-08-01 Oneill Timothy G (VP Field Engineering) Sale 1,000 41.95 41,950
2017-07-05 Oneill Timothy G (VP Field Engineering) Sale 1,000 40.25 40,250
2017-06-16 Weingarten Tim Sale 2,383 40.15 95,677
2017-06-15 Weed Thaddeus Gerard (VP, CFO & Treasurer) Sale 2,250 40.76 91,707
2017-06-05 Kilmer Henry W (VP of IP Engineering) Sale 3,000 40.80 122,399
2017-06-02 Weed Thaddeus Gerard (VP, CFO & Treasurer) Sale 2,250 41.20 92,702
2017-06-01 Bubeck James (Chief Revenue Officer) Sale 300 39.88 11,962
2017-06-01 Beury Robert N Jr (VP & Chief Legal Officer) Sale 3,000 40.20 120,606
2017-06-01 Oneill Timothy G (VP Field Engineering) Sale 1,000 39.50 39,500
2017-05-01 Oneill Timothy G (VP Field Engineering) Sale 1,000 45.05 45,050
2017-04-25 Kummer Raymond B (CTO; VP Optical Transport) Sale 2,679 44.85 120,158
2017-04-24 Kummer Raymond B (CTO; VP Optical Transport) Sale 321 44.75 14,365
2017-04-07 Kummer Raymond B (CTO; VP Optical Transport) Sale 2,000 43.77 87,536
2017-04-03 Oneill Timothy G (VP Field Engineering) Sale 1,000 43.00 43,000
2017-03-24 Kummer Raymond B (CTO; VP Optical Transport) Sale 2,000 42.79 85,580
2017-03-17 Bubeck James (Chief Revenue Officer) Sale 100 41.88 4,187
2017-03-16 Brooks Steven D Sale 3,000 41.77 125,316
2017-03-15 Weed Thaddeus Gerard (VP, CFO & Treasurer) Sale 2,250 41.17 92,625
2017-03-14 Weingarten Tim Sale 2,369 40.51 95,968
2017-03-03 Kilmer Henry W (VP of IP Engineering) Sale 3,000 40.95 122,850
2017-03-01 Bubeck James (Chief Revenue Officer) Sale 300 41.62 12,487
2017-03-01 Beury Robert N Jr (VP & Chief Legal Officer) Sale 3,000 42.00 125,991
2017-03-01 Oneill Timothy G (VP Field Engineering) Sale 1,000 41.70 41,700
2017-02-27 Weingarten Tim Sale 2,450 42.40 103,880
2017-02-27 Liebhaber Richard Sale 5,000 42.38 211,905
2017-01-04 Kummer Raymond B (CTO; VP Optical Transport) Sale 1,000 42.53 42,526
2017-01-04 Weed Thaddeus Gerard (VP, CFO & Treasurer) Sale 5,000 42.50 212,500
2017-01-03 Weed Thaddeus Gerard (VP, CFO & Treasurer) Sale 20,000 41.52 830,320
2016-12-13 Weed Thaddeus Gerard (VP, CFO & Treasurer) Sale 2,000 40.67 81,350
2016-12-07 Weed Thaddeus Gerard (VP, CFO & Treasurer) Sale 5,000 37.91 189,530
2016-12-01 Beury Robert N Jr (VP & Chief Legal Officer) Sale 1,000 36.99 36,990
2016-12-01 Oneill Timothy G (VP Field Engineering) Sale 1,000 37.50 37,500
2016-11-09 Bubeck James (Chief Revenue Officer) Sale 800 39.76 31,808
2016-11-03 Kilmer Henry W (VP of IP Engineering) Sale 1,000 35.00 35,000
2016-11-01 Beury Robert N Jr (VP & Chief Legal Officer) Sale 1,000 36.40 36,400
2016-11-01 Oneill Timothy G (VP Field Engineering) Sale 1,000 36.80 36,800
2016-10-05 Kilmer Henry W (VP of IP Engineering) Sale 1,000 35.17 35,170
2016-10-03 Beury Robert N Jr (VP & Chief Legal Officer) Sale 1,000 36.24 36,236
2016-10-03 Oneill Timothy G (VP Field Engineering) Sale 1,000 36.78 36,780
2016-09-16 Weingarten Tim Sale 2,822 35.57 100,378
2016-09-06 Kilmer Henry W (VP of IP Engineering) Sale 1,000 36.17 36,170
2016-09-01 Beury Robert N Jr (VP & Chief Legal Officer) Sale 1,000 35.40 35,404
2016-09-01 Oneill Timothy G (VP Field Engineering) Sale 1,000 35.52 35,520
2016-08-25 Bubeck James (Chief Revenue Officer) Sale 233 36.26 8,447
2016-08-03 Kilmer Henry W (VP of IP Engineering) Sale 1,000 42.15 42,150
2016-08-01 Beury Robert N Jr (VP & Chief Legal Officer) Sale 1,000 43.27 43,267
2016-08-01 Oneill Timothy G (VP Field Engineering) Sale 1,000 42.64 42,640
2016-07-08 Kummer Raymond B (CTO; VP Optical Transport) Sale 1,000 41.53 41,530
2016-07-05 Kilmer Henry W (VP of IP Engineering) Sale 1,000 40.30 40,300
2016-07-01 Beury Robert N Jr (VP & Chief Legal Officer) Sale 1,000 40.09 40,089
2016-07-01 Oneill Timothy G (VP Field Engineering) Sale 1,000 39.98 39,980
2016-06-08 Kummer Raymond B (CTO; VP Optical Transport) Sale 1,000 40.93 40,929
2016-06-03 Kilmer Henry W (VP of IP Engineering) Sale 1,000 39.90 39,900
2016-06-03 Weed Thaddeus Gerard (VP, CFO & Treasurer) Sale 5,000 40.07 200,335
2016-06-01 Beury Robert N Jr (VP & Chief Legal Officer) Sale 1,000 39.69 39,685
2016-06-01 Oneill Timothy G (VP Field Engineering) Sale 1,000 39.83 39,830
2016-05-31 Kummer Raymond B (CTO; VP Optical Transport) Sale 1,000 39.90 39,900
2016-05-09 Montagner Marc Sale 10,000 39.23 392,299
2016-05-09 Weed Thaddeus Gerard (VP, CFO & Treasurer) Sale 4,250 39.14 166,353
2016-05-04 Kilmer Henry W (VP of IP Engineering) Sale 1,000 38.57 38,570
2016-05-02 Beury Robert N Jr (VP & Chief Legal Officer) Sale 1,000 38.95 38,952
2016-04-05 Kilmer Henry W (VP of IP Engineering) Sale 1,000 39.20 39,200
2016-04-04 Kummer Raymond B (CTO; VP Optical Transport) Sale 1,000 39.91 39,906
2016-04-01 Kummer Raymond B (CTO; VP Optical Transport) Sale 3,000 39.81 119,421
2016-04-01 Beury Robert N Jr (VP & Chief Legal Officer) Sale 1,000 39.00 38,996
2016-04-01 Oneill Timothy G (VP Field Engineering) Sale 1,000 38.72 38,720
2016-03-29 Kummer Raymond B (CTO; VP Optical Transport) Sale 1,400 38.60 54,038
2016-03-17 Weingarten Tim Sale 3,600 37.44 134,784
2016-03-14 Kummer Raymond B (CTO; VP Optical Transport) Sale 2,000 37.15 74,300
2016-03-11 Kummer Raymond B (CTO; VP Optical Transport) Sale 1,000 36.75 36,750
2016-03-03 Kilmer Henry W (VP of IP Engineering) Sale 1,000 36.93 36,930
2016-03-01 Brooks Steven D Sale 5,000 37.72 188,575
2016-03-01 Oneill Timothy G (VP Field Engineering) Sale 1,000 36.89 36,890
2016-02-29 Brooks Steven D Sale 5,000 36.87 184,370
2016-02-29 Weed Thaddeus Gerard (VP, CFO & Treasurer) Sale 5,250 36.87 193,551
2016-02-03 Kilmer Henry W (VP of IP Engineering) Sale 1,000 33.70 33,700
2016-02-01 Oneill Timothy G (VP Field Engineering) Sale 1,000 33.16 33,160
2016-01-08 Kilmer Henry W (VP of IP Engineering) Sale 1,000 33.63 33,630
2016-01-04 Oneill Timothy G (VP Field Engineering) Sale 1,000 34.19 34,190
2015-12-03 Kilmer Henry W (VP of IP Engineering) Sale 1,000 33.77 33,770
2015-12-01 Beury Robert N Jr (VP & Chief Legal Officer) Sale 1,000 33.96 33,961
2015-12-01 Oneill Timothy G (VP Field Engineering) Sale 1,000 33.64 33,640
2015-11-09 Weed Thaddeus Gerard (VP, CFO & Treasurer) Sale 10,000 34.61 346,130
2015-11-05 Kilmer Henry W (VP of IP Engineering) Sale 1,000 36.75 36,750
2015-11-02 Beury Robert N Jr (VP & Chief Legal Officer) Sale 1,000 31.12 31,119
2015-11-02 Oneill Timothy G (VP Field Engineering) Sale 1,000 30.96 30,960
2015-10-05 Kilmer Henry W (VP of IP Engineering) Sale 1,000 27.52 27,520
2015-10-01 Beury Robert N Jr (VP & Chief Legal Officer) Sale 1,000 26.83 26,827
2015-10-01 Oneill Timothy G (VP Field Engineering) Sale 1,000 27.23 27,230
2015-09-16 Ortega Ernest (Chief Revenue Officer) Sale 2,200 28.03 61,666
2015-09-03 Kilmer Henry W (VP of IP Engineering) Sale 1,000 27.28 27,280
2015-09-01 Beury Robert N Jr (VP & Chief Legal Officer) Sale 1,000 27.42 27,417
2015-09-01 Oneill Timothy G (VP Field Engineering) Sale 1,000 27.38 27,380
2015-08-25 Kummer Raymond B (CTO; VP Optical Transport) Option Ex 3,800 4.88 18,544
2015-08-05 Kilmer Henry W (VP of IP Engineering) Sale 1,000 31.56 31,560
2015-08-03 Beury Robert N Jr (VP & Chief Legal Officer) Sale 1,000 31.51 31,509
2015-08-03 Oneill Timothy G (VP Field Engineering) Sale 1,000 31.85 31,850
2015-07-06 Kilmer Henry W (VP of IP Engineering) Sale 1,000 32.70 32,700
2015-07-01 Beury Robert N Jr (VP & Chief Legal Officer) Sale 1,000 33.69 33,689
2015-07-01 Oneill Timothy G (VP Field Engineering) Sale 1,000 34.02 34,020
2015-06-09 Weingarten Tim Sale 3,200 30.56 97,788
2015-06-03 Kilmer Henry W (VP of IP Engineering) Sale 1,000 31.11 31,110
2015-06-02 Ortega Ernest (Chief Revenue Officer) Sale 2,250 31.06 69,885
2015-06-01 Beury Robert N Jr (VP & Chief Legal Officer) Sale 1,000 31.25 31,254
2015-06-01 Oneill Timothy G (VP Field Engineering) Sale 1,000 31.46 31,460
2015-05-05 Kilmer Henry W (VP of IP Engineering) Sale 1,000 35.10 35,100
2015-05-01 Beury Robert N Jr (VP & Chief Legal Officer) Sale 1,000 35.08 35,082
2015-05-01 Oneill Timothy G (VP Field Engineering) Sale 1,000 35.03 35,030
2015-04-06 Kilmer Henry W (VP of IP Engineering) Sale 1,000 35.35 35,350
2015-04-01 Beury Robert N Jr (VP & Chief Legal Officer) Sale 1,000 35.16 35,159
2015-04-01 Oneill Timothy G (VP Field Engineering) Sale 1,000 35.35 35,350
2015-03-16 Weed Thaddeus Gerard (VP, CFO & Treasurer) Sale 4,250 35.26 149,846
2015-03-12 Liebhaber Richard Sale 4,000 34.37 137,484
2015-03-04 Kilmer Henry W (VP of IP Engineering) Sale 1,000 35.92 35,920
2015-03-02 Beury Robert N Jr (VP & Chief Legal Officer) Sale 1,000 36.38 36,378
2015-03-02 Oneill Timothy G (VP Field Engineering) Sale 1,000 36.56 36,560
2015-02-27 Liebhaber Richard Sale 3,000 36.57 109,701
2015-02-11 Kummer Raymond B (CTO; VP Optical Transport) Sale 435 40.01 17,405
2015-02-10 Kummer Raymond B (CTO; VP Optical Transport) Sale 3,165 40.01 126,628
2015-02-10 Oneill Timothy G (VP Field Engineering) Sale 2,000 40.00 80,000
2015-02-04 Kilmer Henry W (VP of IP Engineering) Sale 1,000 37.50 37,500
2015-02-02 Beury Robert N Jr (VP & Chief Legal Officer) Sale 1,000 37.51 37,509
2015-02-02 Oneill Timothy G (VP Field Engineering) Sale 1,000 37.41 37,410
2015-01-22 Kummer Raymond B (CTO; VP Optical Transport) Sale 5,000 38.08 190,415
2015-01-20 Kummer Raymond B (CTO; VP Optical Transport) Sale 4,000 37.09 148,364
2015-01-09 Kilmer Henry W (VP of IP Engineering) Sale 1,000 33.90 33,900
2015-01-02 Beury Robert N Jr (VP & Chief Legal Officer) Sale 1,000 35.15 35,147

Insider trading activities including stock purchases, stock sales, and option exercises of CCOI listed in the above tables cannot be completely guaranteed as to their accuracy. For more insider trading information of Cogent Communications Holdings, Inc. (symbol CCOI, CIK number 1158324) see the Securities and Exchange Commission (SEC) website.