09/03/2025 9:44 AM | Cogent Communications (Issuer) Harris Mark Andrew (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
09/03/2025 8:36 AM | Cogent Communications (Issuer) Harris Mark Andrew (Reporting)
| Form 3 Initial statement of beneficial ownership of securities | |
08/21/2025 3:54 PM | Cogent Communications (Issuer) Kennedy Sheryl Lynn (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
08/21/2025 9:29 AM | Cogent Communications (Subject) Kennedy Sheryl Lynn (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
08/15/2025 3:30 PM | Cogent Communications (Filer)
| Form 8-K Current report pursuant to Section 13 or 15(d) | |
08/14/2025 4:31 PM | Cogent Communications (Subject) Turtle Creek Asset Management Inc. (Filed by)
| Form SCHEDULE 13G | |
08/11/2025 4:11 PM | Cogent Communications (Issuer) SCHAEFFER DAVE (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
08/08/2025 4:03 PM | Cogent Communications (Issuer) SCHAEFFER DAVE (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
08/07/2025 6:29 AM | Cogent Communications (Filer)
| Form 8-K Current report pursuant to Section 13 or 15(d) | |
07/18/2025 1:31 PM | BlackRock, Inc. (Filed by) Cogent Communications (Subject)
| Form SCHEDULE 13G/A | |
07/01/2025 4:43 PM | Cogent Communications (Issuer) Howell Deneen C (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
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07/01/2025 4:44 PM | Cogent Communications (Issuer) Kennedy Sheryl Lynn (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
07/01/2025 4:45 PM | Cogent Communications (Issuer) Montagner Marc (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
07/01/2025 4:57 PM | BROOKS STEVEN D (Reporting) Cogent Communications (Issuer)
| Form 4 Statement of changes in beneficial ownership of securities | |
07/01/2025 4:58 PM | Cogent Communications (Issuer) Howard Eve N (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
07/01/2025 4:41 PM | Cogent Communications (Issuer) de Sa Paul (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
07/01/2025 4:41 PM | Cogent Communications (Issuer) FERGUSON Lewis H (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
06/16/2025 4:30 PM | Cogent Communications (Subject) SCHAEFFER DAVE (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
06/16/2025 1:23 PM | Cogent Communications (Subject) SCHAEFFER DAVE (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
06/16/2025 9:03 AM | Cogent Communications (Issuer) SCHAEFFER DAVE (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
06/13/2025 4:16 PM | Cogent Communications (Subject) SCHAEFFER DAVE (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
06/13/2025 11:36 AM | Cogent Communications (Subject) SCHAEFFER DAVE (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
06/12/2025 4:49 PM | Cogent Communications (Subject) SCHAEFFER DAVE (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
06/12/2025 4:29 PM | Cogent Communications (Issuer) SCHAEFFER DAVE (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
06/12/2025 9:11 AM | Cogent Communications (Issuer) SCHAEFFER DAVE (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
06/11/2025 4:37 PM | Cogent Communications (Subject) SCHAEFFER DAVE (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
06/11/2025 3:50 PM | Cogent Communications (Subject) SCHAEFFER DAVE (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
06/10/2025 5:15 PM | Cogent Communications (Issuer) SCHAEFFER DAVE (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
06/10/2025 4:27 PM | Cogent Communications (Subject) SCHAEFFER DAVE (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
06/10/2025 1:55 PM | Cogent Communications (Subject) SCHAEFFER DAVE (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
06/09/2025 5:23 PM | Cogent Communications (Issuer) SCHAEFFER DAVE (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
06/09/2025 4:14 PM | Cogent Communications (Subject) SCHAEFFER DAVE (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
06/09/2025 3:40 PM | Cogent Communications (Subject) SCHAEFFER DAVE (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
06/09/2025 3:46 PM | Cogent Communications (Issuer) KILMER HENRY W (Reporting)
| Form 4/A | |
06/09/2025 3:48 PM | Cogent Communications (Issuer) SCHAEFFER DAVE (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
06/09/2025 3:49 PM | Cogent Communications (Issuer) KILMER HENRY W (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
06/09/2025 3:51 PM | Cogent Communications (Issuer) WEED THADDEUS GERARD (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
06/09/2025 8:09 AM | Cogent Communications (Issuer) SCHAEFFER DAVE (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
06/06/2025 3:16 PM | Cogent Communications (Subject) SCHAEFFER DAVE (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
06/06/2025 8:16 AM | BUBECK JAMES (Reporting) Cogent Communications (Issuer)
| Form 4 Statement of changes in beneficial ownership of securities | |
06/04/2025 4:44 PM | Cogent Communications (Subject) SCHAEFFER DAVE (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
|
06/04/2025 3:05 PM | Cogent Communications (Subject) SCHAEFFER DAVE (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
06/04/2025 3:06 PM | Cogent Communications (Issuer) SCHAEFFER DAVE (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
06/04/2025 8:36 AM | BUBECK JAMES (Reporting) Cogent Communications (Subject)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
06/03/2025 3:51 PM | Cogent Communications (Filer)
| Form 8-K Current report pursuant to Section 13 or 15(d) | |
06/03/2025 3:28 PM | Cogent Communications (Issuer) SCHAEFFER DAVE (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
06/03/2025 8:17 AM | Cogent Communications (Subject) KILMER HENRY W (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
06/02/2025 12:39 PM | Cogent Communications (Filer)
| Form 8-K Current report pursuant to Section 13 or 15(d) | |
05/29/2025 4:19 PM | Cogent Communications (Subject) SCHAEFFER DAVE (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
05/29/2025 3:30 PM | Cogent Communications (Issuer) SCHAEFFER DAVE (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
05/28/2025 3:56 PM | Cogent Communications (Subject) SCHAEFFER DAVE (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
05/28/2025 3:29 PM | Cogent Communications (Issuer) SCHAEFFER DAVE (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
05/28/2025 12:17 PM | Cogent Communications (Subject) FERGUSON Lewis H (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
05/27/2025 3:37 PM | Cogent Communications (Subject) SCHAEFFER DAVE (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
05/23/2025 3:30 PM | Cogent Communications (Subject) SCHAEFFER DAVE (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
05/22/2025 4:04 PM | Cogent Communications (Subject) SCHAEFFER DAVE (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
05/21/2025 3:46 PM | Cogent Communications (Subject) SCHAEFFER DAVE (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
05/21/2025 3:20 PM | Cogent Communications (Issuer) SCHAEFFER DAVE (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
05/19/2025 3:21 PM | Cogent Communications (Issuer) SCHAEFFER DAVE (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
05/19/2025 12:42 PM | Cogent Communications (Issuer) WEED THADDEUS GERARD (Reporting)
| Form 4/A | |
05/14/2025 3:17 PM | Cogent Communications (Issuer) SCHAEFFER DAVE (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
05/14/2025 2:31 PM | Cogent Communications (Subject) SCHAEFFER DAVE (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
05/13/2025 11:01 AM | Cogent Communications (Subject) Kennedy Sheryl Lynn (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
05/08/2025 1:38 PM | Cogent Communications (Filer)
| Form S-8 Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans | |
05/08/2025 11:19 AM | Cogent Communications (Filer)
| Form 8-K Current report pursuant to Section 13 or 15(d) | |
05/08/2025 10:47 AM | Cogent Communications (Filer)
| Form 10-Q General form for quarterly reports under Section 13 or 15(d) | |
05/08/2025 6:18 AM | Cogent Communications (Filer)
| Form 8-K Current report pursuant to Section 13 or 15(d) | |
04/04/2025 4:06 PM | Cogent Communications (Filer)
| Form 8-K Current report pursuant to Section 13 or 15(d) | |
04/01/2025 9:07 AM | Cogent Communications (Issuer) Howell Deneen C (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
03/31/2025 4:20 PM | Cogent Communications (Issuer) FERGUSON Lewis H (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
03/31/2025 4:22 PM | Cogent Communications (Issuer) Howard Eve N (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
03/31/2025 4:22 PM | Cogent Communications (Issuer) Kennedy Sheryl Lynn (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
03/31/2025 4:23 PM | Cogent Communications (Issuer) Montagner Marc (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
03/14/2025 4:46 PM | Cogent Communications (Subject) SCHAEFFER DAVE (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
03/13/2025 4:43 PM | Cogent Communications (Issuer) FERGUSON Lewis H (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
03/13/2025 11:26 AM | Cogent Communications (Filer)
| Form PRE 14A | |
03/12/2025 9:45 AM | Chang John B. (Reporting) Cogent Communications (Issuer)
| Form 4 Statement of changes in beneficial ownership of securities | |
03/11/2025 4:56 PM | Cogent Communications (Subject) FERGUSON Lewis H (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
03/10/2025 11:07 AM | Cogent Communications (Issuer) KILMER HENRY W (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
03/07/2025 7:56 AM | Chang John B. (Reporting) Cogent Communications (Issuer)
| Form 4 Statement of changes in beneficial ownership of securities | |
03/05/2025 10:42 AM | BUBECK JAMES (Reporting) Cogent Communications (Issuer)
| Form 4 Statement of changes in beneficial ownership of securities | |
03/04/2025 5:11 PM | Cogent Communications (Subject) SCHAEFFER DAVE (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
03/04/2025 11:47 AM | Cogent Communications (Subject) KILMER HENRY W (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
03/04/2025 10:19 AM | BUBECK JAMES (Reporting) Cogent Communications (Subject)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
03/04/2025 8:22 AM | Cogent Communications (Issuer) WEED THADDEUS GERARD (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
03/03/2025 4:30 PM | Cogent Communications (Subject) WEED THADDEUS GERARD (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
03/03/2025 12:58 PM | Cogent Communications (Issuer) Kennedy Sheryl Lynn (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
03/03/2025 12:40 PM | Cogent Communications (Subject) Kennedy Sheryl Lynn (Reporting)
| Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
02/28/2025 9:13 AM | Cogent Communications (Filer)
| Form 10-K Annual report pursuant to Section 13 or 15(d) | |
02/27/2025 6:30 AM | Cogent Communications (Filer)
| Form 8-K Current report pursuant to Section 13 or 15(d) | |
01/22/2025 3:39 PM | BROOKS STEVEN D (Reporting) Cogent Communications (Issuer)
| Form 4 Statement of changes in beneficial ownership of securities | |
|
01/15/2025 3:32 PM | Cogent Communications (Issuer) SCHAEFFER DAVE (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
01/13/2025 3:58 PM | BUBECK JAMES (Reporting) Cogent Communications (Issuer)
| Form 4 Statement of changes in beneficial ownership of securities | |
01/13/2025 3:58 PM | Cogent Communications (Issuer) KILMER HENRY W (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
01/13/2025 3:17 PM | Chang John B. (Reporting) Cogent Communications (Issuer)
| Form 4 Statement of changes in beneficial ownership of securities | |
01/13/2025 3:18 PM | Cogent Communications (Issuer) WEED THADDEUS GERARD (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
01/03/2025 3:45 PM | BROOKS STEVEN D (Reporting) Cogent Communications (Issuer)
| Form 4 Statement of changes in beneficial ownership of securities | |
01/03/2025 3:46 PM | Cogent Communications (Issuer) de Sa Paul (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
01/03/2025 3:46 PM | Cogent Communications (Issuer) FERGUSON Lewis H (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |
01/02/2025 3:18 PM | Cogent Communications (Issuer) Kennedy Sheryl Lynn (Reporting)
| Form 4 Statement of changes in beneficial ownership of securities | |