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Transaction Types Key To InsiderInsights' Infobase
 B  AB  JB*  OB  OE*  OE
 S  AS  JS*  OS  OS*  3
 JB
 JS
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Detailed Insider History For:
'CHANG JOHN B'
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Insider Statistics
T N H M S
Insider Title
Company Name
Ticker
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
SIC Code
SIC Sector
SIC Industry
SIC Sub-Industry
Input Date
1
    
 
VP,LO
COGENT COMMUNICATIONS HOLDINGS INC
CCOI
JB
---
109,600
---
12/31/25
---
---
188,847
138.3
D
R
4899
Transportation, Communications, Electric, Gas, And Sanitary Services
Communications
Communications Services, N E C
1/5/26 - 4:26:30 pm
2
    
 
VP,LO
COGENT COMMUNICATIONS HOLDINGS INC
CCOI
JB
---
2,400
---
12/1/25
---
---
79,247
3.1
D
R
4899
Transportation, Communications, Electric, Gas, And Sanitary Services
Communications
Communications Services, N E C
12/2/25 - 4:26:51 pm
3
    
 
VP,LO
COGENT COMMUNICATIONS HOLDINGS INC
CCOI
JS
---
398
---
6/2/25
---
---
76,847
-0.5
D
---
4899
Transportation, Communications, Electric, Gas, And Sanitary Services
Communications
Communications Services, N E C
6/3/25 - 4:27:10 pm
4
    
 
VP,LO
COGENT COMMUNICATIONS HOLDINGS INC
CCOI
JS
---
756
---
5/13/25
---
---
77,245
-1.0
D
---
4899
Transportation, Communications, Electric, Gas, And Sanitary Services
Communications
Communications Services, N E C
5/15/25 - 4:13:15 pm
5
    
 
VP,LO
COGENT COMMUNICATIONS HOLDINGS INC
CCOI
JB
---
504
---
5/13/25
---
---
3,089
19.5
I
---
4899
Transportation, Communications, Electric, Gas, And Sanitary Services
Communications
Communications Services, N E C
5/15/25 - 4:13:15 pm
6
    
 
VP,LO
COGENT COMMUNICATIONS HOLDINGS INC
CCOI
JS
---
357
---
3/10/25
---
---
78,358
-0.5
D
---
4899
Transportation, Communications, Electric, Gas, And Sanitary Services
Communications
Communications Services, N E C
3/12/25 - 10:45:48 am
7
    
 
VP,LO
COGENT COMMUNICATIONS HOLDINGS INC
CCOI
JS
---
715
---
3/5/25
---
---
78,715
-0.9
D
---
4899
Transportation, Communications, Electric, Gas, And Sanitary Services
Communications
Communications Services, N E C
3/7/25 - 8:56:40 am
8
    
 
VP,LO
COGENT COMMUNICATIONS HOLDINGS INC
CCOI
JB
---
715
---
3/5/25
---
---
2,585
38.2
I
---
4899
Transportation, Communications, Electric, Gas, And Sanitary Services
Communications
Communications Services, N E C
3/7/25 - 8:56:40 am
9
    
 
VP,LO
COGENT COMMUNICATIONS HOLDINGS INC
CCOI
JB
---
9,600
---
1/9/25
---
---
79,430
13.7
D
R
4899
Transportation, Communications, Electric, Gas, And Sanitary Services
Communications
Communications Services, N E C
1/13/25 - 4:17:35 pm
10
    
 
VP,LO
COGENT COMMUNICATIONS HOLDINGS INC
CCOI
JS
---
970
---
12/18/24
---
---
69,830
-1.4
D
---
4899
Transportation, Communications, Electric, Gas, And Sanitary Services
Communications
Communications Services, N E C
12/19/24 - 4:58:03 pm
11
    
 
VP,LO
COGENT COMMUNICATIONS HOLDINGS INC
CCOI
JB
---
970
---
12/18/24
---
---
935
---
I
---
4899
Transportation, Communications, Electric, Gas, And Sanitary Services
Communications
Communications Services, N E C
12/19/24 - 4:58:03 pm
12
    
 
VP,LO
COGENT COMMUNICATIONS HOLDINGS INC
CCOI
JS
---
900
---
12/4/24
---
---
70,800
-1.3
D
---
4899
Transportation, Communications, Electric, Gas, And Sanitary Services
Communications
Communications Services, N E C
12/6/24 - 4:20:39 pm
13
    
 
VP,LO
COGENT COMMUNICATIONS HOLDINGS INC
CCOI
JB
---
2,400
---
12/1/24
---
---
71,700
3.5
D
R
4899
Transportation, Communications, Electric, Gas, And Sanitary Services
Communications
Communications Services, N E C
12/3/24 - 4:09:18 pm
14
1y
27
63%
-10%
1
VP,LO
COGENT COMMUNICATIONS HOLDINGS INC
CCOI
S
$183,328
2,280
---
11/12/24
---
$80.41
69,300
-3.2
D
---
4899
Transportation, Communications, Electric, Gas, And Sanitary Services
Communications
Communications Services, N E C
11/12/24 - 4:19:28 pm
15
1y
27
63%
-10%
1
VP,LO
COGENT COMMUNICATIONS HOLDINGS INC
CCOI
S
$100,338
1,400
---
9/12/24
---
$71.67
71,580
-1.9
D
---
4899
Transportation, Communications, Electric, Gas, And Sanitary Services
Communications
Communications Services, N E C
9/13/24 - 4:45:33 pm
16
1y
27
63%
-10%
1
VP,LO
COGENT COMMUNICATIONS HOLDINGS INC
CCOI
S
$152,070
2,055
---
8/23/24
---
$74.00
72,980
-2.7
D
---
4899
Transportation, Communications, Electric, Gas, And Sanitary Services
Communications
Communications Services, N E C
8/26/24 - 4:11:28 pm
17
    
 
VP,LO
COGENT COMMUNICATIONS HOLDINGS INC
CCOI
JS
---
375
---
2/1/24
---
---
75,035
-0.5
D
---
4899
Transportation, Communications, Electric, Gas, And Sanitary Services
Communications
Communications Services, N E C
2/1/24 - 5:17:48 pm
18
    
 
VP,LO
COGENT COMMUNICATIONS HOLDINGS INC
CCOI
JB
---
375
---
2/1/24
---
---
375
New
I
---
4899
Transportation, Communications, Electric, Gas, And Sanitary Services
Communications
Communications Services, N E C
2/1/24 - 5:17:48 pm
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