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Detailed Insider History for:
COGENT COMMUNICATIONS HOLDINGS INC: CCOI
Price: 5/23/25 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
$46.89 $86.76 $43.65 $2,313 49 664 8.6% 13.7% 96.37% 9.54%
Exch Sector Industry Sub-Industry
NasdaqGS Services Business Services Services- Prepackaged Software
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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
16
25%
18%
1
SCHAEFFER DAVE
CB,CEO,PR,DIR
S
$1,172,593
25,000
---
5/29/25
---
$46.90
4,086,721
-0.6
D
---
5/30/25 - 4:03:18 pm
2
1y
16
25%
18%
1
SCHAEFFER DAVE
CB,CEO,PR,DIR
S
$948,174
20,000
---
5/28/25
---
$47.41
4,111,721
-0.5
D
---
5/29/25 - 4:30:50 pm
3
1y
119
31%
19%
1
WEED THADDEUS GERARD
VP,CFO
S
$4,767
100
---
5/28/25
---
$47.66
102,900
-0.1
D
---
5/29/25 - 4:05:16 pm
4
1y
23
43%
9%
1
FERGUSON LEWIS H
DIR
S
$52,327
1,100
---
5/28/25
---
$47.57
18,904
-5.5
D
---
5/29/25 - 4:04:23 pm
5
1y
16
25%
18%
1
SCHAEFFER DAVE
CB,CEO,PR,DIR
S
$973,322
20,000
---
5/27/25
---
$48.67
4,131,721
-0.5
D
---
5/28/25 - 4:29:57 pm
6
1y
16
25%
18%
1
SCHAEFFER DAVE
CB,CEO,PR,DIR
S
$1,173,318
25,000
---
5/23/25
---
$46.93
4,151,721
-0.6
D
---
5/27/25 - 4:13:43 pm
7
1y
16
25%
18%
1
SCHAEFFER DAVE
CB,CEO,PR,DIR
S
$1,156,768
25,000
---
5/22/25
---
$46.27
4,176,721
-0.6
D
---
5/23/25 - 4:02:52 pm
8
1y
16
25%
18%
1
SCHAEFFER DAVE
CB,CEO,PR,DIR
S
$1,872,248
40,000
---
5/21/25
---
$46.81
4,201,721
-0.9
D
---
5/22/25 - 4:25:25 pm
9
1y
16
25%
18%
1
SCHAEFFER DAVE
CB,CEO,PR,DIR
S
$749,348
15,000
---
5/20/25
---
$49.96
4,241,721
-0.4
D
---
5/21/25 - 4:20:31 pm
10
1y
16
25%
18%
1
SCHAEFFER DAVE
CB,CEO,PR,DIR
S
$764,925
15,000
---
5/16/25
---
$50.99
4,256,721
-0.4
D
---
5/19/25 - 4:21:56 pm
11
    
 
WEED THADDEUS GERARD
VP,CFO
JS
---
---
---
5/16/25
---
---
103,000
---
D
A
5/19/25 - 1:42:24 pm
12
1y
119
31%
19%
1
WEED THADDEUS GERARD
VP,CFO
S
$5,041
100
---
5/16/25
---
$50.41
102,900
-0.1
D
---
5/16/25 - 4:24:48 pm
13
1y
16
25%
18%
1
SCHAEFFER DAVE
CB,CEO,PR,DIR
S
$2,015,036
40,000
---
5/15/25
---
$50.38
4,271,721
-0.9
D
---
5/16/25 - 4:04:46 pm
14
1y
16
25%
18%
1
SCHAEFFER DAVE
CB,CEO,PR,DIR
S
$1,519,140
30,000
---
5/14/25
---
$50.64
4,311,721
-0.7
D
---
5/15/25 - 4:12:04 pm
15
    
 
CHANG JOHN B
VP,LO
JS
---
756
---
5/13/25
---
---
77,245
-1.0
D
---
5/15/25 - 4:13:15 pm
16
    
 
CHANG JOHN B
VP,LO
JB
---
504
---
5/13/25
---
---
3,089
19.5
I
---
5/15/25 - 4:13:15 pm
17
1y
16
25%
18%
1
SCHAEFFER DAVE
CB,CEO,PR,DIR
S
$2,720,232
54,000
5/12/25
5/13/25
$50.10
$50.45
4,341,721
-1.2
D
---
5/14/25 - 4:17:51 pm
18
    
 
KENNEDY SHERYL LYNN
DIR
S
$72,773
1,450
---
5/13/25
---
$50.19
10,049
-12.6
D
---
5/13/25 - 4:11:26 pm
19
    
 
SCHAEFFER DAVE
CB,CEO,PR,DIR
JS
---
48,317
---
4/4/25
---
---
4,395,721
-1.1
D
---
4/4/25 - 4:09:32 pm
20
    
 
HOWELL DENEEN C
DIR
JB
---
1,352
---
3/31/25
---
---
17,689
8.3
D
---
4/1/25 - 10:07:54 am
21
    
 
MONTAGNER MARC
DIR
JB
---
1,352
---
3/31/25
---
---
85,201
1.6
D
---
3/31/25 - 5:23:05 pm
22
    
 
KENNEDY SHERYL LYNN
DIR
JB
---
1,352
---
3/31/25
---
---
11,499
13.3
D
---
3/31/25 - 5:22:35 pm
23
    
 
HOWARD EVE N
DIR
JB
---
1,352
---
3/31/25
---
---
12,665
12.0
D
---
3/31/25 - 5:22:02 pm
24
    
 
FERGUSON LEWIS H
DIR
JB
---
1,352
---
3/31/25
---
---
20,004
7.2
D
---
3/31/25 - 5:20:34 pm
25
    
 
DE SA PAUL
DIR
JB
---
1,352
---
3/31/25
---
---
19,151
7.6
D
---
3/31/25 - 5:19:22 pm
26
    
 
BROOKS STEVEN D
DIR
JB
---
1,352
---
3/31/25
---
---
44,052
3.2
D
---
3/31/25 - 5:18:23 pm
27
    
 
BATH BLAKE
DIR
JB
---
1,352
---
3/31/25
---
---
12,606
12.0
D
---
3/31/25 - 5:17:50 pm
28
1y
23
43%
9%
1
FERGUSON LEWIS H
DIR
S
$66,313
956
---
3/12/25
---
$69.36
18,652
-4.9
D
---
3/13/25 - 5:43:50 pm
29
    
 
CHANG JOHN B
VP,LO
JS
---
357
---
3/10/25
---
---
78,358
-0.5
D
---
3/12/25 - 10:45:48 am
30
1y
69
38%
7%
1
KILMER HENRY W
VP
S
$174,168
2,400
---
3/7/25
---
$72.57
41,000
-5.5
D
---
3/10/25 - 12:07:43 pm
31
    
 
CHANG JOHN B
VP,LO
JS
---
715
---
3/5/25
---
---
78,715
-0.9
D
---
3/7/25 - 8:56:40 am
32
    
 
CHANG JOHN B
VP,LO
JB
---
715
---
3/5/25
---
---
2,585
38.2
I
---
3/7/25 - 8:56:40 am
33
1y
16
25%
18%
1
SCHAEFFER DAVE
CB,CEO,PR,DIR
S
$4,305,978
60,000
---
3/4/25
---
$71.77
4,444,038
-1.3
D
---
3/5/25 - 4:40:00 pm
34
1y
38
26%
11%
1
BUBECK JAMES
O
S
$143,348
2,000
---
3/4/25
---
$71.67
57,142
-3.4
D
---
3/5/25 - 11:42:01 am
35
1y
119
31%
19%
1
WEED THADDEUS GERARD
VP,CFO
S
$353,110
4,900
---
3/3/25
---
$72.06
103,000
-4.5
D
---
3/4/25 - 9:22:10 am
36
    
 
KENNEDY SHERYL LYNN
DIR
S
$103,967
1,425
---
3/3/25
---
$72.96
10,147
-12.3
D
---
3/3/25 - 1:58:46 pm
37
    
 
BROOKS STEVEN D
DIR
JS
---
299
---
1/21/25
---
---
42,700
-0.7
D
---
1/22/25 - 4:39:56 pm
38
    
 
SCHAEFFER DAVE
CB,CEO,PR,DIR
JB
---
180,000
---
1/14/25
---
---
4,504,038
4.2
D
R
1/15/25 - 4:32:31 pm
39
    
 
KILMER HENRY W
VP
JB
---
9,600
---
1/9/25
---
---
43,400
28.4
D
R
1/13/25 - 4:58:51 pm
40
    
 
BUBECK JAMES
O
JB
---
9,600
---
1/9/25
---
---
59,142
19.4
D
R
1/13/25 - 4:58:12 pm
41
    
 
WEED THADDEUS GERARD
VP,CFO
JB
---
19,400
---
1/9/25
---
---
107,900
21.9
D
R
1/13/25 - 4:18:28 pm
42
    
 
CHANG JOHN B
VP,LO
JB
---
9,600
---
1/9/25
---
---
79,430
13.7
D
R
1/13/25 - 4:17:35 pm
43
    
 
FERGUSON LEWIS H
DIR
JB
---
1,254
---
1/1/25
---
---
19,608
6.8
D
---
1/3/25 - 4:46:36 pm
44
    
 
DE SA PAUL
DIR
JB
---
1,254
---
1/1/25
---
---
17,799
7.6
D
---
1/3/25 - 4:46:02 pm
45
    
 
BROOKS STEVEN D
DIR
JB
---
1,254
---
1/1/25
---
---
42,999
3.0
D
---
1/3/25 - 4:45:29 pm
46
    
 
KENNEDY SHERYL LYNN
DIR
JB
---
1,254
---
1/1/25
---
---
11,572
12.2
D
---
1/2/25 - 4:18:58 pm
47
    
 
HOWELL DENEEN C
DIR
JB
---
1,254
---
1/1/25
---
---
16,337
8.3
D
---
1/2/25 - 4:09:47 pm
48
    
 
MONTAGNER MARC
DIR
JB
---
1,254
---
1/1/25
---
---
83,849
1.5
D
---
1/2/25 - 4:07:53 pm
49
    
 
HOWARD EVE N
DIR
JB
---
1,254
---
1/1/25
---
---
11,313
12.5
D
---
1/2/25 - 4:07:17 pm
50
    
 
BATH BLAKE
DIR
JB
---
1,254
---
1/1/25
---
---
11,254
12.5
D
---
1/2/25 - 4:06:41 pm
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