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General | Insiders | Insider Transactions | Monthly Overview | Weekly Overview

Overview of all insider trading transactions in COGENT COMMUNICATIONS HOLDINGS, INC.. Get notifications about new insider transactions in COGENT COMMUNICATIONS HOLDINGS, INC. for free.

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Date	Ticker	Company	Owner	Relationship	Transaction	Code	Cost ($)	Shares	Transaction Value ($)	Total Shares	% Holdings
Sep 17 2015	COI	COGENT COMMUNICATI ...	Ortega Ernest	Chief Revenue Offic ...	Sell	S	28.03	2,200	61,666	38,800	41 K to 38.8 K (-5.37 %)
Sep 03 2015	COI	COGENT COMMUNICATI ...	KILMER HENRY W	VP of IP Engineerin ...	Sell	S	27.28	1,000	27,280	39,000	40 K to 39 K (-2.50 %)
Sep 01 2015	COI	COGENT COMMUNICATI ...	ONEILL TIMOTHY G	VP Field Engineerin ...	Sell	S	27.38	1,000	27,380	41,452	42.5 K to 41.5 K (-2.36 %)
Sep 01 2015	COI	COGENT COMMUNICATI ...	BEURY ROBERT N JR	VP & Chief Legal Of ...	Sell	S	27.42	1,000	27,417	49,640	50.6 K to 49.6 K (-1.97 %)
Aug 25 2015	COI	COGENT COMMUNICATI ...	KUMMER RAYMOND B	CTO; VP Optical Tra ...	Option Exercise	M	4.88	3,800	18,544	0
Aug 25 2015	COI	COGENT COMMUNICATI ...	KUMMER RAYMOND B	CTO; VP Optical Tra ...	Buy	M	4.88	3,800	18,544	59,140	55.3 K to 59.1 K (+6.87 %)
Aug 05 2015	COI	COGENT COMMUNICATI ...	KILMER HENRY W	VP of IP Engineerin ...	Sell	S	31.56	1,000	31,560	40,000	41 K to 40 K (-2.44 %)
Aug 03 2015	COI	COGENT COMMUNICATI ...	BEURY ROBERT N JR	VP & Chief Legal Of ...	Sell	S	31.51	1,000	31,509	50,640	51.6 K to 50.6 K (-1.94 %)
Aug 03 2015	COI	COGENT COMMUNICATI ...	ONEILL TIMOTHY G	VP Field Engineerin ...	Sell	S	31.85	1,000	31,850	42,452	43.5 K to 42.5 K (-2.30 %)
Jul 06 2015	COI	COGENT COMMUNICATI ...	KILMER HENRY W	VP of IP Engineerin ...	Sell	S	32.70	1,000	32,700	41,000	42 K to 41 K (-2.38 %)
Jul 02 2015	COI	COGENT COMMUNICATI ...	BEURY ROBERT N JR	VP & Chief Legal Of ...	Sell	S	33.69	1,000	33,689	51,640	52.6 K to 51.6 K (-1.90 %)
Jul 02 2015	COI	COGENT COMMUNICATI ...	ONEILL TIMOTHY G	VP Field Engineerin ...	Sell	S	34.02	1,000	34,020	43,452	44.5 K to 43.5 K (-2.25 %)
Jul 01 2015	COI	COGENT COMMUNICATI ...	WEINGARTEN TIM	Director	Grant	A	0.00	1,875	0	20,401	18.5 K to 20.4 K (+10.12 %)
Jul 01 2015	COI	COGENT COMMUNICATI ...	Montagner Marc	Director	Grant	A	0.00	1,875	0	38,625	36.8 K to 38.6 K (+5.10 %)
Jul 01 2015	COI	COGENT COMMUNICATI ...	LIEBHABER RICHARD	Director	Grant	A	0.00	1,875	0	68,970	67.1 K to 69 K (+2.79 %)
Jul 01 2015	COI	COGENT COMMUNICATI ...	BROOKS STEVEN D	Director	Grant	A	0.00	1,875	0	34,775	32.9 K to 34.8 K (+5.70 %)
Jul 01 2015	COI	COGENT COMMUNICATI ...	Bath Blake	Director	Grant	A	0.00	1,875	0	23,550	21.7 K to 23.6 K (+8.65 %)
Jun 10 2015	COI	COGENT COMMUNICATI ...	WEINGARTEN TIM	Director	Sell	S	30.56	3,200	97,789	18,526	21.7 K to 18.5 K (-14.73 %)
Jun 03 2015	COI	COGENT COMMUNICATI ...	KILMER HENRY W	VP of IP Engineerin ...	Sell	S	31.11	1,000	31,110	42,000	43 K to 42 K (-2.33 %)
Jun 03 2015	COI	COGENT COMMUNICATI ...	Ortega Ernest	Chief Revenue Offic ...	Sell	S	31.06	2,250	69,885	41,000	43.3 K to 41 K (-5.20 %)
Jun 02 2015	COI	COGENT COMMUNICATI ...	ONEILL TIMOTHY G	VP Field Engineerin ...	Sell	S	31.46	1,000	31,460	44,452	45.5 K to 44.5 K (-2.20 %)
Jun 02 2015	COI	COGENT COMMUNICATI ...	BEURY ROBERT N JR	VP & Chief Legal Of ...	Sell	S	31.25	1,000	31,254	52,640	53.6 K to 52.6 K (-1.86 %)
May 05 2015	COI	COGENT COMMUNICATI ...	KILMER HENRY W	VP of IP Engineerin ...	Sell	S	35.10	1,000	35,100	43,000	44 K to 43 K (-2.27 %)
May 04 2015	COI	COGENT COMMUNICATI ...	BEURY ROBERT N JR	VP & Chief Legal Of ...	Sell	S	35.08	1,000	35,082	53,640	54.6 K to 53.6 K (-1.83 %)
May 04 2015	COI	COGENT COMMUNICATI ...	ONEILL TIMOTHY G	VP Field Engineerin ...	Sell	S	35.03	1,000	35,030	45,452	46.5 K to 45.5 K (-2.15 %)
Apr 07 2015	COI	COGENT COMMUNICATI ...	KILMER HENRY W	VP of IP Engineerin ...	Sell	S	35.35	1,000	35,350	44,000	45 K to 44 K (-2.22 %)
Apr 02 2015	COI	COGENT COMMUNICATI ...	ONEILL TIMOTHY G	VP Field Engineerin ...	Sell	S	35.35	1,000	35,350	46,452	47.5 K to 46.5 K (-2.11 %)
Apr 02 2015	COI	COGENT COMMUNICATI ...	BEURY ROBERT N JR	VP & Chief Legal Of ...	Sell	S	35.16	1,000	35,159	54,640	55.6 K to 54.6 K (-1.80 %)
Apr 01 2015	COI	COGENT COMMUNICATI ...	WEINGARTEN TIM	Director	Grant	A	0.00	1,875	0	21,726	19.9 K to 21.7 K (+9.45 %)
Apr 01 2015	COI	COGENT COMMUNICATI ...	Montagner Marc	Director	Grant	A	0.00	1,875	0	36,750	34.9 K to 36.8 K (+5.38 %)
Apr 01 2015	COI	COGENT COMMUNICATI ...	LIEBHABER RICHARD	Director	Grant	A	0.00	1,875	0	67,095	65.2 K to 67.1 K (+2.87 %)
Apr 01 2015	COI	COGENT COMMUNICATI ...	BROOKS STEVEN D	Director	Grant	A	0.00	1,875	0	32,900	31 K to 32.9 K (+6.04 %)
Apr 01 2015	COI	COGENT COMMUNICATI ...	Bath Blake	Director	Grant	A	0.00	1,875	0	21,675	19.8 K to 21.7 K (+9.47 %)
Mar 16 2015	COI	COGENT COMMUNICATI ...	WEED THADDEUS GERARD	VP, CFO & Treasurer	Sell	S	35.26	4,250	149,847	94,500	98.8 K to 94.5 K (-4.30 %)
Mar 13 2015	COI	COGENT COMMUNICATI ...	Ortega Ernest	Chief Revenue Offic ...	Sell	S	35.00	2,000	70,000	43,250	45.3 K to 43.3 K (-4.42 %)
Mar 12 2015	COI	COGENT COMMUNICATI ...	LIEBHABER RICHARD	Director	Sell	S	34.37	4,000	137,482	65,220	69.2 K to 65.2 K (-5.78 %)
Mar 04 2015	COI	COGENT COMMUNICATI ...	KILMER HENRY W	VP of IP Engineerin ...	Sell	S	35.92	1,000	35,920	45,000	46 K to 45 K (-2.17 %)
Mar 03 2015	COI	COGENT COMMUNICATI ...	ONEILL TIMOTHY G	VP Field Engineerin ...	Sell	S	36.56	1,000	36,560	47,452	48.5 K to 47.5 K (-2.06 %)
Mar 02 2015	COI	COGENT COMMUNICATI ...	BEURY ROBERT N JR	VP & Chief Legal Of ...	Sell	S	36.38	1,000	36,378	55,640	56.6 K to 55.6 K (-1.77 %)
Mar 02 2015	COI	COGENT COMMUNICATI ...	LIEBHABER RICHARD	Director	Sell	S	36.57	3,000	109,700	69,220	72.2 K to 69.2 K (-4.15 %)
Feb 13 2015	COI	COGENT COMMUNICATI ...	KUMMER RAYMOND B	CTO; VP Optical Tra ...	Sell	S	40.01	435	17,405	55,340	55.8 K to 55.3 K (-0.78 %)
Feb 10 2015	COI	COGENT COMMUNICATI ...	KUMMER RAYMOND B	CTO; VP Optical Tra ...	Sell	S	40.01	3,165	126,628	55,775	58.9 K to 55.8 K (-5.37 %)
Feb 10 2015	COI	COGENT COMMUNICATI ...	ONEILL TIMOTHY G	VP Field Engineerin ...	Sell	S	40.00	2,000	80,000	48,452	50.5 K to 48.5 K (-3.96 %)
Feb 04 2015	COI	COGENT COMMUNICATI ...	KILMER HENRY W	VP of IP Engineerin ...	Sell	S	37.50	1,000	37,500	46,000	47 K to 46 K (-2.13 %)
Feb 03 2015	COI	COGENT COMMUNICATI ...	ONEILL TIMOTHY G	VP Field Engineerin ...	Sell	S	37.41	1,000	37,410	50,452	51.5 K to 50.5 K (-1.94 %)
Feb 03 2015	COI	COGENT COMMUNICATI ...	BEURY ROBERT N JR	VP & Chief Legal Of ...	Sell	S	37.51	1,000	37,509	56,640	57.6 K to 56.6 K (-1.73 %)
Jan 23 2015	COI	COGENT COMMUNICATI ...	KUMMER RAYMOND B	CTO; VP Optical Tra ...	Sell	S	38.08	5,000	190,414	58,940	63.9 K to 58.9 K (-7.82 %)
Jan 21 2015	COI	COGENT COMMUNICATI ...	KUMMER RAYMOND B	CTO; VP Optical Tra ...	Sell	S	37.09	4,000	148,363	63,940	67.9 K to 63.9 K (-5.89 %)
Jan 14 2015	COI	COGENT COMMUNICATI ...	LIEBHABER RICHARD	Director	Gift	G	0.00	2,000	0	72,220	74.2 K to 72.2 K (-2.69 %)
Jan 09 2015	COI	COGENT COMMUNICATI ...	KILMER HENRY W	VP of IP Engineerin ...	Sell	S	33.90	1,000	33,900	47,000	48 K to 47 K (-2.08 %)
Jan 02 2015	COI	COGENT COMMUNICATI ...	BEURY ROBERT N JR	VP & Chief Legal Of ...	Sell	S	35.15	1,000	35,147	57,640	58.6 K to 57.6 K (-1.71 %)
Jan 02 2015	COI	COGENT COMMUNICATI ...	WEINGARTEN TIM	Director	Grant	A	0.00	1,875	0	19,851	18 K to 19.9 K (+10.43 %)
Jan 02 2015	COI	COGENT COMMUNICATI ...	Montagner Marc	Director	Grant	A	0.00	1,875	0	34,875	33 K to 34.9 K (+5.68 %)
Jan 02 2015	COI	COGENT COMMUNICATI ...	LIEBHABER RICHARD	Director	Grant	A	0.00	1,875	0	74,220	72.3 K to 74.2 K (+2.59 %)
Jan 02 2015	COI	COGENT COMMUNICATI ...	BROOKS STEVEN D	Director	Grant	A	0.00	1,875	0	31,025	29.2 K to 31 K (+6.43 %)
Jan 02 2015	COI	COGENT COMMUNICATI ...	Bath Blake	Director	Grant	A	0.00	1,875	0	19,800	17.9 K to 19.8 K (+10.46 %)
Jan 02 2015	COI	COGENT COMMUNICATI ...	ONEILL TIMOTHY G	VP Field Engineerin ...	Sell	S	35.85	1,000	35,850	51,452	52.5 K to 51.5 K (-1.91 %)
Dec 11 2014	COI	COGENT COMMUNICATI ...	ONEILL TIMOTHY G	VP Field Engineerin ...	Sell	S	34.31	2,000	68,621	52,452	54.5 K to 52.5 K (-3.67 %)
Dec 04 2014	COI	COGENT COMMUNICATI ...	KILMER HENRY W	VP of IP Engineerin ...	Sell	S	34.04	1,000	34,040	48,000	49 K to 48 K (-2.04 %)
Dec 02 2014	COI	COGENT COMMUNICATI ...	KUMMER RAYMOND B	CTO; VP Optical Tra ...	Sell	S	33.99	1,000	33,990	67,940	68.9 K to 67.9 K (-1.45 %)
Dec 01 2014	COI	COGENT COMMUNICATI ...	ONEILL TIMOTHY G	VP Field Engineerin ...	Sell	S	35.23	500	17,615	54,452	55 K to 54.5 K (-0.91 %)
Dec 01 2014	COI	COGENT COMMUNICATI ...	BEURY ROBERT N JR	VP & Chief Legal Of ...	Sell	S	34.23	1,000	34,233	58,640	59.6 K to 58.6 K (-1.68 %)
Nov 25 2014	COI	COGENT COMMUNICATI ...	Montagner Marc	Director	Sell	S	34.70	7,500	260,250	33,000	40.5 K to 33 K (-18.52 %)
Nov 21 2014	COI	COGENT COMMUNICATI ...	Ortega Ernest	Chief Revenue Offic ...	Sell	S	35.17	1,250	43,965	45,250	46.5 K to 45.3 K (-2.69 %)
Nov 18 2014	COI	COGENT COMMUNICATI ...	KILMER HENRY W	VP of IP Engineerin ...	Sell	S	35.78	1,250	44,725	49,000	50.3 K to 49 K (-2.49 %)
Nov 13 2014	COI	COGENT COMMUNICATI ...	KUMMER RAYMOND B	CTO; VP Optical Tra ...	Sell	S	36.00	3,000	108,000	68,940	71.9 K to 68.9 K (-4.17 %)
Nov 13 2014	COI	COGENT COMMUNICATI ...	KUMMER RAYMOND B	CTO; VP Optical Tra ...	Sell	S	35.01	3,000	105,032	71,940	74.9 K to 71.9 K (-4.00 %)
Nov 06 2014	COI	COGENT COMMUNICATI ...	KILMER HENRY W	VP of IP Engineerin ...	Sell	S	33.13	1,000	33,130	50,250	51.3 K to 50.3 K (-1.95 %)
Nov 04 2014	COI	COGENT COMMUNICATI ...	KUMMER RAYMOND B	CTO; VP Optical Tra ...	Gift	G	0.00	1,000	0	74,940	75.9 K to 74.9 K (-1.32 %)
Nov 04 2014	COI	COGENT COMMUNICATI ...	KUMMER RAYMOND B	CTO; VP Optical Tra ...	Grant	A	0.00	24,000	0	75,940	51.9 K to 75.9 K (+46.21 %)
Nov 04 2014	COI	COGENT COMMUNICATI ...	KUMMER RAYMOND B	CTO; VP Optical Tra ...	Sell	S	33.82	1,000	33,817	51,940	52.9 K to 51.9 K (-1.89 %)
Nov 04 2014	COI	COGENT COMMUNICATI ...	KILMER HENRY W	VP of IP Engineerin ...	Grant	A	0.00	24,000	0	51,250	27.3 K to 51.3 K (+88.07 %)
Nov 04 2014	COI	COGENT COMMUNICATI ...	ONEILL TIMOTHY G	VP Field Engineerin ...	Grant	A	0.00	24,000	0	54,952	31 K to 55 K (+77.54 %)
Nov 04 2014	COI	COGENT COMMUNICATI ...	ONEILL TIMOTHY G	VP Field Engineerin ...	Sell	S	33.86	500	16,930	30,952	31.5 K to 31 K (-1.59 %)
Nov 04 2014	COI	COGENT COMMUNICATI ...	Ortega Ernest	Chief Revenue Offic ...	Grant	A	0.00	15,000	0	46,500	31.5 K to 46.5 K (+47.62 %)
Nov 04 2014	COI	COGENT COMMUNICATI ...	WEED THADDEUS GERARD	VP, CFO & Treasurer	Grant	A	0.00	36,000	0	98,750	62.8 K to 98.8 K (+57.37 %)
Nov 03 2014	COI	COGENT COMMUNICATI ...	BEURY ROBERT N JR	VP & Chief Legal Of ...	Grant	A	0.00	24,000	0	59,640	35.6 K to 59.6 K (+67.34 %)
Nov 03 2014	COI	COGENT COMMUNICATI ...	BEURY ROBERT N JR	VP & Chief Legal Of ...	Sell	S	33.63	1,000	33,626	35,640	36.6 K to 35.6 K (-2.73 %)
Oct 03 2014	COI	COGENT COMMUNICATI ...	KILMER HENRY W	VP of IP Engineerin ...	Sell	S	32.66	1,000	32,660	27,250	28.3 K to 27.3 K (-3.54 %)
Oct 02 2014	COI	COGENT COMMUNICATI ...	KUMMER RAYMOND B	CTO; VP Optical Tra ...	Sell	S	32.89	1,000	32,894	52,940	53.9 K to 52.9 K (-1.85 %)
Oct 02 2014	COI	COGENT COMMUNICATI ...	ONEILL TIMOTHY G	VP Field Engineerin ...	Sell	S	33.65	500	16,825	31,452	32 K to 31.5 K (-1.56 %)
Oct 02 2014	COI	COGENT COMMUNICATI ...	BEURY ROBERT N JR	VP & Chief Legal Of ...	Sell	S	33.26	1,000	33,259	36,640	37.6 K to 36.6 K (-2.66 %)
Oct 01 2014	COI	COGENT COMMUNICATI ...	Bath Blake	Director	Grant	A	0.00	1,875	0	17,925	16.1 K to 17.9 K (+11.68 %)
Oct 01 2014	COI	COGENT COMMUNICATI ...	BROOKS STEVEN D	Director	Grant	A	0.00	1,875	0	29,150	27.3 K to 29.2 K (+6.87 %)
Oct 01 2014	COI	COGENT COMMUNICATI ...	LIEBHABER RICHARD	Director	Grant	A	0.00	1,875	0	72,345	70.5 K to 72.3 K (+2.66 %)
Oct 01 2014	COI	COGENT COMMUNICATI ...	Montagner Marc	Director	Grant	A	0.00	1,875	0	40,500	38.6 K to 40.5 K (+4.85 %)
Oct 01 2014	COI	COGENT COMMUNICATI ...	WEINGARTEN TIM	Director	Grant	A	0.00	1,875	0	17,976	16.1 K to 18 K (+11.65 %)
Sep 09 2014	COI	COGENT COMMUNICATI ...	WEED THADDEUS GERARD	VP, CFO & Treasurer	Sell	S	34.07	5,250	178,883	62,750	68 K to 62.8 K (-7.72 %)
Sep 04 2014	COI	COGENT COMMUNICATI ...	KUMMER RAYMOND B	CTO; VP Optical Tra ...	Sell	S	34.70	1,000	34,700	53,940	54.9 K to 53.9 K (-1.82 %)
Sep 04 2014	COI	COGENT COMMUNICATI ...	KILMER HENRY W	VP of IP Engineerin ...	Sell	S	34.89	1,000	34,890	28,250	29.3 K to 28.3 K (-3.42 %)
Sep 03 2014	COI	COGENT COMMUNICATI ...	BEURY ROBERT N JR	VP & Chief Legal Of ...	Sell	S	34.39	1,000	34,386	37,640	38.6 K to 37.6 K (-2.59 %)
Sep 03 2014	COI	COGENT COMMUNICATI ...	ONEILL TIMOTHY G	VP Field Engineerin ...	Sell	S	34.80	500	17,400	31,952	32.5 K to 32 K (-1.54 %)
Sep 02 2014	COI	COGENT COMMUNICATI ...	Ortega Ernest	Chief Revenue Offic ...	Sell	S	32.75	8,500	278,375	31,500	40 K to 31.5 K (-21.25 %)
Aug 29 2014	COI	COGENT COMMUNICATI ...	ONEILL TIMOTHY G	VP Field Engineerin ...	Sell	S	34.63	2,500	86,575	32,452	35 K to 32.5 K (-7.15 %)
Aug 20 2014	COI	COGENT COMMUNICATI ...	LIEBHABER RICHARD	Director	Gift	G	0.00	100	0	70,470	70.6 K to 70.5 K (-0.14 %)
Aug 19 2014	COI	COGENT COMMUNICATI ...	KILMER HENRY W	VP of IP Engineerin ...	Sell	S	32.88	1,250	41,100	29,250	30.5 K to 29.3 K (-4.10 %)
Aug 07 2014	COI	COGENT COMMUNICATI ...	SCHAEFFER DAVE	Chairman, President ...	Grant	A	0.00	460,000	0	3,672,471	3.2 M to 3.7 M (+14.32 %)
Aug 04 2014	COI	COGENT COMMUNICATI ...	KILMER HENRY W	VP of IP Engineerin ...	Sell	S	34.54	1,000	34,540	30,500	31.5 K to 30.5 K (-3.17 %)
Aug 04 2014	COI	COGENT COMMUNICATI ...	BEURY ROBERT N JR	VP & Chief Legal Of ...	Sell	S	34.67	1,000	34,672	38,640	39.6 K to 38.6 K (-2.52 %)
Jul 03 2014	COI	COGENT COMMUNICATI ...	KILMER HENRY W	VP of IP Engineerin ...	Sell	S	35.02	1,000	35,020	31,500	32.5 K to 31.5 K (-3.08 %)
Aug 04 2014	COI	COGENT COMMUNICATI ...	ONEILL TIMOTHY G	VP Field Engineerin ...	Sell	S	34.78	500	17,390	34,952	35.5 K to 35 K (-1.41 %)
Jul 03 2014	COI	COGENT COMMUNICATI ...	WEINGARTEN TIM	Director	Grant	A	0.00	1,875	0	16,101	14.2 K to 16.1 K (+13.18 %)
Jul 02 2014	COI	COGENT COMMUNICATI ...	Bath Blake	Director	Grant	A	0.00	1,875	0	16,050	14.2 K to 16.1 K (+13.23 %)
Jul 01 2014	COI	COGENT COMMUNICATI ...	BEURY ROBERT N JR	VP & Chief Legal Of ...	Sell	S	34.90	1,000	34,900	39,640	40.6 K to 39.6 K (-2.46 %)
Jul 01 2014	COI	COGENT COMMUNICATI ...	Montagner Marc	Director	Grant	A	0.00	1,875	0	38,625	36.8 K to 38.6 K (+5.10 %)
Jul 01 2014	COI	COGENT COMMUNICATI ...	LIEBHABER RICHARD	Director	Grant	A	0.00	1,875	0	70,570	68.7 K to 70.6 K (+2.73 %)
Jul 01 2014	COI	COGENT COMMUNICATI ...	BROOKS STEVEN D	Director	Grant	A	0.00	1,875	0	27,275	25.4 K to 27.3 K (+7.38 %)
Jul 01 2014	COI	COGENT COMMUNICATI ...	ONEILL TIMOTHY G	VP Field Engineerin ...	Sell	S	34.85	500	17,425	35,452	36 K to 35.5 K (-1.39 %)
Jun 26 2014	COI	COGENT COMMUNICATI ...	Bath Blake	Director	Gift	G	0.00	14,175	0	14,175	28.4 K to 14.2 K (-50.00 %)
Jun 17 2014	COI	COGENT COMMUNICATI ...	KUMMER RAYMOND B	CTO; VP Optical Tra ...	Sell	S	34.96	2,000	69,921	54,940	56.9 K to 54.9 K (-3.51 %)
Jun 13 2014	COI	COGENT COMMUNICATI ...	WEED THADDEUS GERARD	VP, CFO & Treasurer	Sell	S	35.34	7,500	265,015	68,000	75.5 K to 68 K (-9.93 %)
Jun 03 2014	COI	COGENT COMMUNICATI ...	ONEILL TIMOTHY G	VP Field Engineerin ...	Sell	S	36.60	500	18,300	35,952	36.5 K to 36 K (-1.37 %)
Jun 03 2014	COI	COGENT COMMUNICATI ...	KILMER HENRY W	VP of IP Engineerin ...	Sell	S	35.90	1,000	35,900	32,500	33.5 K to 32.5 K (-2.99 %)
Jun 03 2014	COI	COGENT COMMUNICATI ...	BEURY ROBERT N JR	VP & Chief Legal Of ...	Sell	S	36.36	1,000	36,362	40,640	41.6 K to 40.6 K (-2.40 %)
May 20 2014	COI	COGENT COMMUNICATI ...	KILMER HENRY W	VP of IP Engineerin ...	Sell	S	36.57	1,250	45,713	33,500	34.8 K to 33.5 K (-3.60 %)
May 06 2014	COI	COGENT COMMUNICATI ...	KILMER HENRY W	VP of IP Engineerin ...	Sell	S	34.43	1,000	34,430	34,750	35.8 K to 34.8 K (-2.80 %)
May 05 2014	COI	COGENT COMMUNICATI ...	ONEILL TIMOTHY G	VP Field Engineerin ...	Sell	S	34.39	500	17,195	36,452	37 K to 36.5 K (-1.35 %)
May 02 2014	COI	COGENT COMMUNICATI ...	BEURY ROBERT N JR	VP & Chief Legal Of ...	Sell	S	34.78	1,000	34,783	41,640	42.6 K to 41.6 K (-2.35 %)
Apr 03 2014	COI	COGENT COMMUNICATI ...	KILMER HENRY W	VP of IP Engineerin ...	Sell	S	36.29	1,000	36,290	35,750	36.8 K to 35.8 K (-2.72 %)
Apr 02 2014	COI	COGENT COMMUNICATI ...	ONEILL TIMOTHY G	VP Field Engineerin ...	Sell	S	35.63	500	17,815	36,952	37.5 K to 37 K (-1.34 %)
Apr 01 2014	COI	COGENT COMMUNICATI ...	BEURY ROBERT N JR	VP & Chief Legal Of ...	Sell	S	36.41	1,000	36,412	42,640	43.6 K to 42.6 K (-2.29 %)
Apr 01 2014	COI	COGENT COMMUNICATI ...	WEINGARTEN TIM	Director	Grant	A	0.00	1,875	0	14,226	12.4 K to 14.2 K (+15.18 %)
Apr 01 2014	COI	COGENT COMMUNICATI ...	LIEBHABER RICHARD	Director	Grant	A	0.00	1,875	0	68,695	66.8 K to 68.7 K (+2.81 %)
Apr 01 2014	COI	COGENT COMMUNICATI ...	Montagner Marc	Director	Grant	A	0.00	1,875	0	36,750	34.9 K to 36.8 K (+5.38 %)
Apr 01 2014	COI	COGENT COMMUNICATI ...	Bath Blake	Director	Grant	A	0.00	1,875	0	28,350	26.5 K to 28.4 K (+7.08 %)
Apr 01 2014	COI	COGENT COMMUNICATI ...	Bath Blake	Director	Grant	A	0.00	1,875	0	28,350	26.5 K to 28.4 K (+7.08 %)
Apr 01 2014	COI	COGENT COMMUNICATI ...	BROOKS STEVEN D	Director	Grant	A	0.00	1,875	0	25,400	23.5 K to 25.4 K (+7.97 %)
Mar 05 2014	COI	COGENT COMMUNICATI ...	ONEILL TIMOTHY G	VP Field Engineerin ...	Sell	S	38.97	1,000	38,970	37,452	38.5 K to 37.5 K (-2.60 %)
Mar 10 2014	COI	COGENT COMMUNICATI ...	KILMER HENRY W	VP of IP Engineerin ...	Sell	S	37.40	1,000	37,400	36,750	37.8 K to 36.8 K (-2.65 %)
Mar 04 2014	COI	COGENT COMMUNICATI ...	BEURY ROBERT N JR	VP & Chief Legal Of ...	Sell	S	37.89	1,000	37,890	43,640	44.6 K to 43.6 K (-2.24 %)
Feb 12 2014	COI	COGENT COMMUNICATI ...	LIEBHABER RICHARD	Director	Gift	G	0.00	1,085	0	66,820	67.9 K to 66.8 K (-1.60 %)
Feb 06 2014	COI	COGENT COMMUNICATI ...	BEURY ROBERT N JR	VP & Chief Legal Of ...	Option Exercise	M	4.88	700	3,416	0
Feb 06 2014	COI	COGENT COMMUNICATI ...	BEURY ROBERT N JR	VP & Chief Legal Of ...	Buy	M	4.88	700	3,416	44,640	43.9 K to 44.6 K (+1.59 %)
Feb 04 2014	COI	COGENT COMMUNICATI ...	BEURY ROBERT N JR	VP & Chief Legal Of ...	Sell	S	41.06	1,000	41,058	43,940	44.9 K to 43.9 K (-2.23 %)
Feb 03 2014	COI	COGENT COMMUNICATI ...	ONEILL TIMOTHY G	VP Field Engineerin ...	Sell	S	41.10	1,000	41,100	41,452	42.5 K to 41.5 K (-2.36 %)
Jan 03 2014	COI	COGENT COMMUNICATI ...	BEURY ROBERT N JR	VP & Chief Legal Of ...	Sell	S	39.48	1,000	39,476	44,940	45.9 K to 44.9 K (-2.18 %)
Jan 03 2014	COI	COGENT COMMUNICATI ...	WEINGARTEN TIM	Director	Grant	A	0.00	1,875	0	12,351	10.5 K to 12.4 K (+17.90 %)
Jan 03 2014	COI	COGENT COMMUNICATI ...	Montagner Marc	Director	Grant	A	0.00	1,875	0	34,875	33 K to 34.9 K (+5.68 %)
Jan 02 2014	COI	COGENT COMMUNICATI ...	LIEBHABER RICHARD	Director	Grant	A	0.00	1,875	0	67,905	66 K to 67.9 K (+2.84 %)
Jan 03 2014	COI	COGENT COMMUNICATI ...	BROOKS STEVEN D	Director	Sell	S	39.88	2,000	79,768	23,525	25.5 K to 23.5 K (-7.84 %)
Jan 03 2014	COI	COGENT COMMUNICATI ...	BROOKS STEVEN D	Director	Grant	A	0.00	1,875	0	25,525	23.7 K to 25.5 K (+7.93 %)
Jan 02 2014	COI	COGENT COMMUNICATI ...	ONEILL TIMOTHY G	VP Field Engineerin ...	Sell	S	40.12	3,500	140,420	42,452	46 K to 42.5 K (-7.62 %)
Jan 02 2014	COI	COGENT COMMUNICATI ...	Bath Blake	Director	Grant	A	0.00	1,875	0	26,475	24.6 K to 26.5 K (+7.62 %)
Dec 19 2013	COI	COGENT COMMUNICATI ...	BEURY ROBERT N JR	VP & Chief Legal Of ...	Option Exercise	M	4.88	1,800	8,784	700
Dec 19 2013	COI	COGENT COMMUNICATI ...	BEURY ROBERT N JR	VP & Chief Legal Of ...	Buy	M	4.88	1,800	8,784	45,940	44.1 K to 45.9 K (+4.08 %)
Dec 17 2013	COI	COGENT COMMUNICATI ...	KUMMER RAYMOND B	CTO; VP Optical Tra ...	Sell	S	39.05	2,901	113,284	56,940	59.8 K to 56.9 K (-4.85 %)
Dec 17 2013	COI	COGENT COMMUNICATI ...	KUMMER RAYMOND B	CTO; VP Optical Tra ...	Sell	S	39.05	99	3,866	59,841	59.9 K to 59.8 K (-0.17 %)
Dec 03 2013	COI	COGENT COMMUNICATI ...	BEURY ROBERT N JR	VP & Chief Legal Of ...	Sell	S	38.13	1,000	38,130	44,140	45.1 K to 44.1 K (-2.22 %)
Nov 01 2013	COI	COGENT COMMUNICATI ...	ONEILL TIMOTHY G	VP Field Engineerin ...	Sell	S	35.06	500	17,530	46,452	47 K to 46.5 K (-1.06 %)
Dec 03 2013	COI	COGENT COMMUNICATI ...	ONEILL TIMOTHY G	VP Field Engineerin ...	Sell	S	38.90	500	19,450	45,952	46.5 K to 46 K (-1.08 %)

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