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 B  AB  JB*  OB  OE*  OE
 S  AS  JS*  OS  OS*  3
 JB
 JS
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Detailed Insider History for:
COGENT COMMUNICATIONS HOLDINGS INC: CCOI
Price: 1/9/26 52-Wk
High		 52-Wk
Low		 Mkt Cap (mm) Shrs Out (mm) 3-Mth Ave
Vol (m)		 Ind. Yield Short Int
% Float		 Inst. Owned Insider Owned
$22.94 $84.06 $15.96 $1,128 49 1,571 13.3% 18.1% 105.87% 2.72%
Exch Sector Industry Sub-Industry
NasdaqGS Transportation, Communications, Electric, Gas, And Sanitary Services Communications Communications Services, N E C
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#
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Insider Statistics
T N H M S
Filer Name
Insider Title
Trans Type
Dollar Value
Shares Traded
Trans Date From
Trans Date To
Trans Price From
Trans Price To
Total Holdings
Delta % Owned
Owned
Other Info
Input Date
1
    
 
DE SA PAUL
DIR
JB
---
1,675
---
7/1/24
---
---
15,093
12.5
D
---
7/1/24 - 4:58:01 pm
2
    
 
HOWARD EVE N
DIR
JB
---
1,675
---
7/1/24
---
---
12,107
16.1
D
---
7/1/24 - 4:21:33 pm
3
    
 
MONTAGNER MARC
DIR
JB
---
1,675
---
7/1/24
---
---
81,143
2.1
D
---
7/1/24 - 4:01:59 pm
4
1y
21
43%
5%
1
SCHAEFFER DAVE
CB,CEO,PR,DIR,BO
S
$3,106,830
60,000
---
6/14/24
---
$51.78
4,433,038
-1.3
D
---
6/17/24 - 10:22:53 am
5
1y
21
43%
5%
1
SCHAEFFER DAVE
CB,CEO,PR,DIR,BO
S
$3,276,000
60,000
---
6/12/24
---
$54.60
4,493,038
-1.3
D
---
6/13/24 - 11:13:11 am
6
1y
3
67%
10%
2
MONTAGNER MARC
DIR
B
$526,130
10,000
---
6/11/24
---
$52.61
79,468
14.4
D
---
6/11/24 - 4:38:54 pm
7
1y
122
33%
17%
1
WEED THADDEUS GERARD
VP,CFO
S
$126,252
2,400
---
6/10/24
---
$52.60
93,300
-2.5
D
---
6/10/24 - 1:50:05 pm
8
1y
72
40%
5%
1
KILMER HENRY W
VP
S
$134,400
2,400
---
6/6/24
---
$56.00
38,600
-5.9
D
---
6/7/24 - 10:16:49 am
9
1y
42
33%
5%
1
BUBECK JAMES
O
AS
$113,221
1,920
---
6/3/24
---
$58.97
52,902
-3.5
D
10b
6/4/24 - 4:16:42 pm
10
    
 
KENNEDY SHERYL LYNN
DIR
S
$94,782
1,640
---
5/23/24
---
$57.79
10,091
-14.0
D
---
5/23/24 - 4:58:20 pm
11
1y
25
48%
3%
1
FERGUSON LEWIS H
DIR
S
$117,802
2,000
---
5/21/24
---
$58.90
17,623
-10.2
D
---
5/22/24 - 6:11:45 pm
12
1y
21
43%
5%
1
SCHAEFFER DAVE
CB,CEO,PR,DIR,BO
S
$2,972,000
50,000
---
5/13/24
---
$59.44
4,553,038
-1.1
D
---
5/14/24 - 4:42:04 pm
13
    
 
HOWELL DENEEN C
DIR
JB
---
1,370
---
4/1/24
---
---
11,956
12.9
D
---
4/1/24 - 2:29:41 pm
14
    
 
HOWARD EVE N
DIR
JB
---
1,370
---
4/1/24
---
---
10,432
15.1
D
---
4/1/24 - 2:28:07 pm
15
    
 
FERGUSON LEWIS H
DIR
JB
---
1,370
---
4/1/24
---
---
19,623
7.5
D
---
4/1/24 - 12:47:23 pm
16
    
 
MONTAGNER MARC
DIR
JB
---
1,370
---
4/1/24
---
---
69,468
2.0
D
---
4/1/24 - 12:45:39 pm
17
    
 
KENNEDY SHERYL LYNN
DIR
JB
---
1,370
---
4/1/24
---
---
11,731
13.2
D
---
4/1/24 - 12:43:54 pm
18
    
 
DE SA PAUL
DIR
JB
---
1,370
---
4/1/24
---
---
13,418
11.4
D
---
4/1/24 - 12:41:28 pm
19
    
 
BROOKS STEVEN D
DIR
JB
---
1,370
---
4/1/24
---
---
38,918
3.6
D
---
4/1/24 - 12:39:28 pm
20
    
 
BATH BLAKE
DIR
JB
---
1,370
---
4/1/24
---
---
13,093
11.7
D
---
4/1/24 - 12:37:14 pm
21
    
 
SCHAEFFER DAVE
CB,CEO,PR,DIR,BO
JS
---
50,165
---
4/1/24
---
---
4,603,038
-1.1
D
---
4/1/24 - 12:35:11 pm
22
    
 
BROOKS STEVEN D
DIR
JS
---
300
---
3/22/24
---
---
38,618
-0.8
D
---
4/2/24 - 12:09:55 pm
23
1y
21
43%
5%
1
SCHAEFFER DAVE
CB,CEO,PR,DIR,BO
S
$1,680,633
26,174
---
3/15/24
---
$64.21
4,653,203
-0.6
D
---
3/18/24 - 11:12:26 am
24
1y
21
43%
5%
1
SCHAEFFER DAVE
CB,CEO,PR,DIR,BO
S
$2,025,600
30,000
---
3/13/24
---
$67.52
4,679,377
-0.6
D
---
3/15/24 - 9:19:20 am
25
1y
122
33%
17%
1
WEED THADDEUS GERARD
VP,CFO
S
$163,608
2,400
---
3/12/24
---
$68.17
95,700
-2.4
D
A
3/14/24 - 11:03:24 am
26
1y
21
43%
5%
1
SCHAEFFER DAVE
CB,CEO,PR,DIR,BO
S
$3,406,000
50,000
---
3/12/24
---
$68.12
4,709,377
-1.1
D
A
3/14/24 - 10:58:05 am
27
    
 
SCHAEFFER DAVE
CB,CEO,PR,DIR,BO
JS
$3,406,000
50,000
---
3/12/24
---
$68.12
4,709,377
-1.1
D
---
3/12/24 - 5:29:59 pm
28
1y
21
43%
5%
1
SCHAEFFER DAVE
CB,CEO,PR,DIR,BO
S
$2,377,550
35,000
---
3/11/24
---
$67.93
4,759,377
-0.7
D
A
3/14/24 - 10:53:42 am
29
    
 
SCHAEFFER DAVE
CB,CEO,PR,DIR,BO
JS
$2,377,550
35,000
---
3/11/24
---
$67.93
4,759,377
-0.7
D
---
3/12/24 - 1:01:33 pm
30
1y
21
43%
5%
1
SCHAEFFER DAVE
CB,CEO,PR,DIR,BO
S
$640,326
8,826
---
3/6/24
---
$72.55
4,815,764
-0.2
D
---
3/8/24 - 12:00:01 pm
31
    
 
SCHAEFFER DAVE
CB,CEO,PR,DIR,BO
JS
---
21,387
---
3/6/24
---
---
4,794,377
-0.4
D
---
3/8/24 - 12:00:01 pm
32
1y
72
40%
5%
1
KILMER HENRY W
VP
S
$176,339
2,400
---
3/5/24
---
$73.47
41,000
-5.5
D
---
3/6/24 - 9:38:29 am
33
1y
42
33%
5%
1
BUBECK JAMES
O
AS
$147,108
1,920
---
3/1/24
---
$76.62
54,822
-3.4
D
10b
3/4/24 - 5:29:24 pm
34
    
 
CHANG JOHN B
VP,LO
JS
---
375
---
2/1/24
---
---
75,035
-0.5
D
---
2/1/24 - 5:17:48 pm
35
    
 
CHANG JOHN B
VP,LO
JB
---
375
---
2/1/24
---
---
375
New
I
---
2/1/24 - 5:17:48 pm
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