44 filings
144
John B. Chang
14 Mar 24
Notice of proposed sale of securities
10:26am
4/A
CCOI
Cogent Communications Holdings Inc
14 Feb 24
COGENT COMMUNICATIONS / John B. Chang ownership change
8:46am
4
CCOI
Cogent Communications Holdings Inc
1 Feb 24
COGENT COMMUNICATIONS / John B. Chang ownership change
5:17pm
4/A
John B. Chang
30 Jan 24
COGENT COMMUNICATIONS / John B. Chang ownership change
12:09pm
4
John B. Chang
5 Jan 24
COGENT COMMUNICATIONS / John B. Chang ownership change
12:14pm
4
677253r 75kx5p3d2
28 Dec 23
COGENT COMMUNICATIONS / John B. Chang ownership change
9:37am
144
mnn ud6a2dalmwdhy1el
26 Dec 23
Notice of proposed sale of securities
5:47pm
4
o7pcy5y743g
22 Dec 23
COGENT COMMUNICATIONS / John B. Chang ownership change
4:26pm
144
7fc2wko 5z239dvzk
21 Dec 23
Notice of proposed sale of securities
6:32pm
4
bpwjgqe
20 Dec 23
COGENT COMMUNICATIONS / John B. Chang ownership change
4:03pm
4
6qcf b0ve68wgoanyfrz
15 Dec 23
COGENT COMMUNICATIONS / John B. Chang ownership change
10:23am
144
0g9sdo 67vt32p
14 Dec 23
Notice of proposed sale of securities
5:41pm
4
ecjn6ycmts0cyny5wai
11 Dec 23
COGENT COMMUNICATIONS / John B. Chang ownership change
4:23pm
144
6x53s2 h8rw
11 Dec 23
Notice of proposed sale of securities
4:02pm
4
hbwlhjuw al4pvk
1 Dec 23
COGENT COMMUNICATIONS / John B. Chang ownership change
11:36am
4
1ec8l0l4lzq
4 May 23
COGENT COMMUNICATIONS / John B. Chang ownership change
12:08pm
144
5x3jbl85xbat9v0ln 00
3 May 23
Notice of proposed sale of securities
8:36pm
4
yaattvr1bjhkv5jl
18 Apr 23
COGENT COMMUNICATIONS / John B. Chang ownership change
2:41pm
144
fjibm
17 Apr 23
Notice of proposed sale of securities
6:14pm
4
2o1a5h1 tahce8f1ez
2 Feb 23
COGENT COMMUNICATIONS / John B. Chang ownership change
9:31am