Cogent Communications Holdings Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

DB:OGM1 Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Shares	Max Price
15 Mar 24	Sell€1,543,493	David Schaeffer	Individual	26,174	€58.97
13 Mar 24	Sell€1,850,791	David Schaeffer	Individual	30,000	€61.69
12 Mar 24	Sell€5,297,153	David Schaeffer	Individual	85,000	€62.39
12 Mar 24	Sell€149,849	Thaddeus Weed	Individual	2,400	€62.44
06 Mar 24	Sell€587,371	David Schaeffer	Individual	8,826	€66.55
05 Mar 24	Sell€162,267	Henry Kilmer	Individual	2,400	€67.61
14 Dec 23	Sell€32,742	John Chang	Individual	500	€65.48
13 Dec 23	Sell€1,297,335	David Schaeffer	Individual	20,000	€64.87
07 Dec 23	Sell€302,291	Henry Kilmer	Individual	4,800	€62.98
05 Dec 23	Sell€117,626	James Bubeck	Individual	1,920	€61.26
04 Dec 23	Sell€590,173	Thaddeus Weed	Individual	9,700	€60.84
01 Dec 23	Sell€2,397,595	David Schaeffer	Individual	40,000	€60.01
01 Dec 23	Sell€112,599	James Bubeck	Individual	1,920	€58.65
30 Nov 23	Sell€56,266	Lewis Ferguson	Individual	950	€59.23
27 Nov 23	Sell€55,663	Sheryl Kennedy	Individual	925	€60.18
20 Nov 23	Sell€552,225	David Bath	Individual	9,000	€61.36
17 Nov 23	Sell€555,225	David Bath	Individual	9,000	€61.70
14 Nov 23	Sell€639,929	Marc Montagner	Individual	10,550	€60.66
14 Nov 23	Sell€2,446,133	David Schaeffer	Individual	40,000	€61.15
15 Sep 23	Sell€1,122,170	David Schaeffer	Individual	18,191	€61.69
13 Sep 23	Sell€2,800,513	David Schaeffer	Individual	45,000	€62.33
11 Sep 23	Sell€2,833,810	David Schaeffer	Individual	45,000	€63.01
07 Sep 23	Sell€155,112	Henry Kilmer	Individual	2,400	€64.63
05 Sep 23	Sell€314,309	Thaddeus Weed	Individual	4,850	€64.81
29 Aug 23	Sell€41,744	Lewis Ferguson	Individual	650	€64.22
24 Aug 23	Sell€34,961	Sheryl Kennedy	Individual	550	€63.56
11 Aug 23	Sell€550,024	David Kapp	Individual	9,000	€63.02
14 Jun 23	Sell€251,717	Steven Brooks	Individual	4,202	€59.90
08 Jun 23	Sell€4,336,316	David Schaeffer	Individual	75,000	€57.95
06 Jun 23	Sell€139,733	Henry Kilmer	Individual	2,400	€58.22
05 Jun 23	Sell€281,949	Thaddeus Weed	Individual	4,850	€58.13
30 May 23	Sell€64,784	Sheryl Kennedy	Individual	1,100	€58.89
30 May 23	Sell€37,751	Lewis Ferguson	Individual	640	€58.99
11 May 23	Sell€226,088	Steven Brooks	Individual	3,798	€59.53
10 May 23	Sell€2,084,705	David Schaeffer	Individual	35,000	€59.56
09 May 23	Sell€592,890	Thaddeus Weed	Individual	10,000	€59.29

Insider Trading Volume

Insider Buying: OGM1 insiders have only sold shares in the past 3 months.

Ownership Breakdown

What is the ownership structure of OGM1?
Owner Type	Number of Shares	Ownership Percentage
Private Companies	20,526	0.0419%
State or Government	20,542	0.0419%
Individual Insiders	5,169,584	10.5%
Institutions	43,828,989	89.4%

Dilution of Shares: Shareholders have not been meaningfully diluted in the past year.

Top Shareholders

Top 25 shareholders own 72.94% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
15.4%	BlackRock, Inc.	7,336,041	€444.9m	4.48%	0.01%
10.6%	The Vanguard Group, Inc.	5,081,633	€308.2m	-0.14%	0.01%
9.63%	David Schaeffer	4,603,038	€279.1m	-2.9%	no data
3.8%	State Street Global Advisors, Inc.	1,814,628	€110.0m	1.86%	no data
3.37%	Renaissance Technologies LLC	1,611,456	€97.7m	-8.47%	0.16%
2.84%	Brown Advisory Incorporated	1,358,886	€82.4m	1.47%	0.12%
2.13%	Harspring Capital Management, LLC	1,019,500	€61.8m	3.61%	15.59%
2.02%	Geode Capital Management, LLC	964,504	€58.5m	5.41%	0.01%
2.01%	Copeland Capital Management, LLC	962,311	€58.4m	2.17%	1.21%
1.73%	Jennison Associates LLC	828,664	€50.3m	46.6%	0.03%
1.72%	MIG Capital, LLC	820,249	€49.7m	0%	7.49%
1.66%	FMR LLC	793,509	€48.1m	11.9%	no data
1.51%	Dimensional Fund Advisors LP	722,631	€43.8m	-28.8%	0.01%
1.39%	Norges Bank Investment Management	663,033	€40.2m	-4.84%	no data
1.34%	Broad Run Investment Management, LLC	638,877	€38.7m	-4.61%	5.37%
1.33%	Westwood Management Corp.	633,500	€38.4m	0%	0.34%
1.29%	Hood River Capital Management LLC	616,906	€37.4m	41%	1.04%
1.27%	BNY Mellon Asset Management	607,185	€36.8m	-4.14%	0.01%
1.24%	Boston Financial Management, LLC	592,027	€35.9m	-0.34%	1.29%
1.18%	Northern Trust Global Investments	565,679	€34.3m	3.63%	0.01%
1.18%	Invesco Capital Management LLC	561,478	€34.0m	3.92%	0.02%
1.17%	Raymond James Financial Inc., Asset Management Arm	559,003	€33.9m	-11.3%	0.03%
1.15%	Citadel Advisors LLC	547,394	€33.2m	6,330%	0.04%
1.01%	W. H. Reaves & Co., Inc.	482,532	€29.3m	16.2%	1.14%
0.97%	M&G Investment Management Limited	462,399	€28.0m	1.21%	0.06%