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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: 4/4/25 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
$56.92 $86.76 $50.80 $2,811 49 400 7.1% 11.7% 95.46% 10.02%
Exch Sector Industry Sub-Industry
NasdaqGS Services Business Services Services- Prepackaged Software
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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
1y
15
20%
21%
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
2
    
 
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
3
1y
15
20%
21%
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
4
    
 
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
5
1y
69
38%
7%
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
6
1y
38
26%
11%
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
7
    
 
CHANG JOHN B
VP,LO
JS
---
375
---
2/1/24
---
---
75,035
-0.5
D
---
2/1/24 - 5:17:48 pm
8
    
 
CHANG JOHN B
VP,LO
JB
---
375
---
2/1/24
---
---
375
New
I
---
2/1/24 - 5:17:48 pm
9
    
 
CHANG JOHN B
VP,LO
JB
---
39,600
---
1/3/24
---
---
75,410
110.6
D
A,R
1/30/24 - 12:09:27 pm
10
    
 
BUBECK JAMES
O
JB
---
19,600
---
1/3/24
---
---
56,742
52.8
D
R
1/5/24 - 2:40:36 pm
11
    
 
KILMER HENRY W
VP
JB
---
14,600
---
1/3/24
---
---
43,400
50.7
D
R
1/5/24 - 1:03:44 pm
12
    
 
WEED THADDEUS GERARD
VP,CFO
JB
---
49,400
---
1/3/24
---
---
98,100
101.4
D
R
1/5/24 - 12:35:59 pm
13
    
 
SCHAEFFER DAVE
CB,CEO,PR,DIR,BO
JB
---
180,000
---
1/3/24
---
---
4,920,590
3.8
D
R
1/5/24 - 12:20:15 pm
14
    
 
CHANG JOHN B
VP,LO
JB
---
39,600
---
1/3/24
---
---
77,910
103.4
D
R
1/5/24 - 12:14:47 pm
15
    
 
BROOKS STEVEN D
DIR
JB
---
1,403
---
1/1/24
---
---
37,548
3.9
D
A
1/3/24 - 2:32:33 pm
16
    
 
FERGUSON LEWIS H
DIR
JB
---
1,403
---
1/1/24
---
---
18,253
8.3
D
---
1/3/24 - 2:19:26 pm
17
    
 
HOWARD EVE N
DIR
JB
---
1,403
---
1/1/24
---
---
9,062
18.3
D
---
1/3/24 - 2:14:03 pm
18
    
 
DE SA PAUL
DIR
JB
---
1,403
---
1/1/24
---
---
12,048
13.2
D
---
1/3/24 - 9:33:40 am
19
    
 
HOWELL DENEEN C
DIR
JB
---
1,403
---
1/1/24
---
---
10,586
15.3
D
---
1/3/24 - 9:32:55 am
20
    
 
KENNEDY SHERYL LYNN
DIR
JB
---
1,403
---
1/1/24
---
---
10,361
15.7
D
---
1/3/24 - 9:31:47 am
21
    
 
BATH BLAKE
DIR
JB
---
1,403
---
1/1/24
---
---
11,723
13.6
D
---
1/3/24 - 9:31:13 am
22
    
 
MONTAGNER MARC
DIR
JB
---
1,403
---
1/1/24
---
---
68,098
2.1
D
---
1/3/24 - 9:30:25 am
23
    
 
BROOKS STEVEN D
DIR
JB
---
1,403
---
1/1/24
---
---
41,224
3.5
D
---
1/3/24 - 9:29:50 am
24
1y
24
58%
-4%
1
CHANG JOHN B
VP,LO
AS
$269,800
3,550
---
12/26/23
---
$76.00
38,310
-8.5
D
10b
12/28/23 - 9:37:30 am
25
1y
24
58%
-4%
1
CHANG JOHN B
VP,LO
AS
$74,000
1,000
---
12/21/23
---
$74.00
41,860
-2.3
D
10b
12/22/23 - 4:26:41 pm
26
    
 
CHANG JOHN B
VP,LO
JS
---
900
---
12/20/23
---
---
42,860
-2.1
D
---
12/20/23 - 4:03:05 pm
27
    
 
CHANG JOHN B
VP,LO
JB
---
900
---
12/20/23
---
---
450
---
I
---
12/20/23 - 4:03:05 pm
28
1y
24
58%
-4%
1
CHANG JOHN B
VP,LO
S
$36,000
500
---
12/14/23
---
$72.00
43,760
-1.1
D
---
12/15/23 - 10:23:11 am
29
1y
15
20%
21%
1
SCHAEFFER DAVE
CB,CEO,PR,DIR,BO
S
$1,399,800
20,000
---
12/13/23
---
$69.99
4,740,590
-0.4
D
---
12/14/23 - 10:14:20 am
30
    
 
CHANG JOHN B
VP,LO
JS
$207,000
3,000
---
12/11/23
---
$69.00
44,260
-6.3
D
---
12/11/23 - 4:23:35 pm
31
1y
69
38%
7%
1
KILMER HENRY W
VP
S
$326,132
4,800
---
12/7/23
---
$67.94
28,800
-14.3
D
---
12/8/23 - 3:56:14 pm
32
1y
38
26%
11%
1
BUBECK JAMES
O
S
$126,957
1,920
---
12/5/23
---
$66.12
37,142
-4.9
D
---
12/6/23 - 1:49:19 pm
33
1y
119
31%
19%
1
WEED THADDEUS GERARD
VP,CFO
S
$638,646
9,700
---
12/4/23
---
$65.84
48,700
-16.6
D
---
12/4/23 - 11:59:42 am
34
1y
38
26%
11%
1
BUBECK JAMES
O
S
$122,297
1,920
---
12/1/23
---
$63.70
39,062
-4.7
D
---
12/4/23 - 1:46:27 pm
35
    
 
WEED THADDEUS GERARD
VP,CFO
JB
---
4,850
---
12/1/23
---
---
58,400
9.1
D
R
12/4/23 - 9:57:54 am
36
1y
15
20%
21%
1
SCHAEFFER DAVE
CB,CEO,PR,DIR,BO
S
$2,385,691
36,604
---
12/1/23
---
$65.18
4,760,590
-0.8
D
---
12/1/23 - 4:47:31 pm
37
    
 
BUBECK JAMES
O
JB
---
2,400
---
12/1/23
---
---
40,982
6.2
D
R
12/1/23 - 4:32:42 pm
38
    
 
KILMER HENRY W
VP
JB
---
2,400
---
12/1/23
---
---
33,600
7.7
D
R
12/1/23 - 11:36:54 am
39
    
 
CHANG JOHN B
VP,LO
JB
---
2,400
---
12/1/23
---
---
47,260
5.3
D
R
12/1/23 - 11:36:16 am
40
1y
15
20%
21%
1
SCHAEFFER DAVE
CB,CEO,PR,DIR,BO
S
$218,409
3,396
---
11/30/23
---
$64.31
4,797,194
-0.1
D
---
12/1/23 - 9:41:30 am
41
1y
22
41%
11%
1
FERGUSON LEWIS H
DIR
S
$61,365
950
---
11/30/23
---
$64.59
16,850
-5.3
D
---
11/30/23 - 3:04:25 pm
42
    
 
KENNEDY SHERYL LYNN
DIR
S
$60,841
925
---
11/27/23
---
$65.77
8,958
-9.4
D
---
11/27/23 - 4:30:07 pm
43
1y
11
36%
7%
1
BATH BLAKE
DIR
S
$604,251
9,000
---
11/20/23
---
$67.14
10,320
-46.6
D
---
11/21/23 - 11:01:47 am
44
1y
11
36%
7%
1
BATH BLAKE
DIR
S
$579,032
8,621
---
11/17/23
---
$67.17
19,320
-30.9
D
---
11/17/23 - 4:59:44 pm
45
1y
11
36%
7%
1
BATH BLAKE
DIR
S
$25,393
379
---
11/16/23
---
$67.00
27,941
-1.3
D
---
11/17/23 - 11:37:37 am
46
1y
15
20%
21%
1
SCHAEFFER DAVE
CB,CEO,PR,DIR,BO
S
$2,654,800
40,000
---
11/14/23
---
$66.37
4,800,590
-0.8
D
---
11/16/23 - 4:27:00 pm
47
1y
8
38%
7%
2
MONTAGNER MARC
DIR
S
$694,518
10,550
---
11/14/23
---
$65.83
66,695
-13.7
D
---
11/15/23 - 3:20:00 pm
48
    
 
DE SA PAUL
DIR
JB
---
1,433
---
10/1/23
---
---
10,645
15.6
D
---
10/3/23 - 5:19:45 pm
49
    
 
HOWARD EVE N
DIR
JB
---
1,433
---
10/1/23
---
---
7,659
23.0
D
---
10/3/23 - 10:05:15 am
50
    
 
MONTAGNER MARC
DIR
JB
---
1,433
---
10/1/23
---
---
77,245
1.9
D
---
10/3/23 - 10:03:50 am
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