SEC Filings
Search SEC EDGAR filings by company ticker and form type
arrow_back
COGENT COMMUNICATIONS HOLDINGS, INC.
DEFA14A
6 filings
All DEFA14A Filings
Complete history of DEFA14A filings with the SEC
| Date Filed | View on EDGAR |
|---|---|
|
15
Apr
Apr 15, 2021
|
open_in_new View Filing |
|
15
Apr
Apr 15, 2021
|
open_in_new View Filing |
|
12
Apr
Apr 12, 2019
|
open_in_new View Filing |
|
23
Apr
Apr 23, 2018
|
open_in_new View Filing |
|
01
Apr
Apr 01, 2015
|
open_in_new View Filing |
|
30
Mar
Mar 30, 2015
|
open_in_new View Filing |