53 filings
DEF 14A
CCOI
Cogent Communications Holdings Inc
Definitive proxy
25 Mar 24
4:00pm
DEF 14A
CCOI
Cogent Communications Holdings Inc
Definitive proxy
15 Mar 23
4:02pm
DEF 14A
CCOI
Cogent Communications Holdings Inc
Definitive proxy
14 Mar 22
11:32am
DEFA14A
CCOI
Cogent Communications Holdings Inc
15 Apr 21
Additional proxy soliciting materials
12:00am
DEFA14A
7w89o
14 Apr 21
Additional proxy soliciting materials
9:25pm
DEFA14A
kdcn35gr94word51e0e0
12 Apr 19
Additional proxy soliciting materials
2:38pm
DEFA14A
fy4bylqry
23 Apr 18
Additional proxy soliciting materials
12:00am
DEFA14A
q47wctz nqc50n0o
1 Apr 15
Additional proxy soliciting materials
12:00am
DEFA14A
pz93hy djofz1jalr
30 Mar 15
Additional proxy soliciting materials
12:00am
PRER14A
he0s6
19 Mar 15
Preliminary revised proxy
12:00am