John Chang

Insider Reports History

Location
Washington, DC
Signature
/s/ John Chang
All insider transactions
Transactions in reports broken out by “transaction date” reported in original SEC filing, see here for transactions aggregated across transaction date

Holdings reported by John Chang:

Stock Role Class Num Shares Value Price $ Report Date Ownership
COGENT COMMUNICATIONS HOLDINGS, INC. VP & CHIEF LEGAL OFFICER common stock 79.2K $3.44M $43.47 01 Dec 2025 Direct
COGENT COMMUNICATIONS HOLDINGS, INC. VP & CHIEF LEGAL OFFICER common stock 3.09K $134K $43.47 01 Dec 2025 By minor children

Insider Reports Filed by John Chang

Symbol Company Period Transactions Value $ Form Type Role Filing Time
CCOI COGENT COMMUNICATIONS HOLDINGS, INC. 01 Dec 2025 1 $0 4 VP & CHIEF LEGAL OFFICER 02 Dec 2025, 16:26
CCOI COGENT COMMUNICATIONS HOLDINGS, INC. 02 Jun 2025 1 $0 4 VP & CHIEF LEGAL OFFICER 03 Jun 2025, 16:27
CCOI COGENT COMMUNICATIONS HOLDINGS, INC. 15 May 2025 2 $0 4 VP & CHIEF LEGAL OFFICER 15 May 2025, 16:13
CCOI COGENT COMMUNICATIONS HOLDINGS, INC. 10 Apr 2025 1 $0 4 VP & CHIEF LEGAL OFFICER 11 Apr 2025, 16:36
CCOI COGENT COMMUNICATIONS HOLDINGS, INC. 10 Mar 2025 1 $0 4 VP & CHIEF LEGAL OFFICER 12 Mar 2025, 10:45
CCOI COGENT COMMUNICATIONS HOLDINGS, INC. 05 Mar 2025 2 $0 4 VP & CHIEF LEGAL OFFICER 07 Mar 2025, 08:56
CCOI COGENT COMMUNICATIONS HOLDINGS, INC. 09 Jan 2025 1 $0 4 VP & CHIEF LEGAL OFFICER 13 Jan 2025, 16:17
CCOI COGENT COMMUNICATIONS HOLDINGS, INC. 18 Dec 2024 3 $0 4 VP & CHIEF LEGAL OFFICER 19 Dec 2024, 16:58
CCOI COGENT COMMUNICATIONS HOLDINGS, INC. 04 Dec 2024 1 $0 4 VP & CHIEF LEGAL OFFICER 06 Dec 2024, 16:20
CCOI COGENT COMMUNICATIONS HOLDINGS, INC. 01 Dec 2024 1 $0 4 VP & CHIEF LEGAL OFFICER 03 Dec 2024, 16:09
CCOI COGENT COMMUNICATIONS HOLDINGS, INC. 12 Nov 2024 1 -$183K 4 VP & CHIEF LEGAL OFFICER 12 Nov 2024, 16:19
CCOI COGENT COMMUNICATIONS HOLDINGS, INC. 12 Sep 2024 1 -$100K 4 VP & CHIEF LEGAL OFFICER 13 Sep 2024, 16:45
CCOI COGENT COMMUNICATIONS HOLDINGS, INC. 23 Aug 2024 1 -$152K 4 VP & CHIEF LEGAL OFFICER 26 Aug 2024, 16:11
CCOI COGENT COMMUNICATIONS HOLDINGS, INC. 01 Feb 2024 0 $0 4/A VP & CHIEF LEGAL OFFICER 14 Feb 2024, 08:46
CCOI COGENT COMMUNICATIONS HOLDINGS, INC. 01 Feb 2024 2 $0 4 VP & CHIEF LEGAL OFFICER 01 Feb 2024, 17:17
CCOI COGENT COMMUNICATIONS HOLDINGS, INC. 03 Jan 2024 2 $0 4/A VP & CHIEF LEGAL OFFICER 30 Jan 2024, 12:09
CCOI COGENT COMMUNICATIONS HOLDINGS, INC. 03 Jan 2024 2 $0 4 VP & CHIEF LEGAL OFFICER 05 Jan 2024, 12:14
CCOI COGENT COMMUNICATIONS HOLDINGS, INC. 26 Dec 2023 1 -$270K 4 VP & CHIEF LEGAL OFFICER 28 Dec 2023, 09:37
CCOI COGENT COMMUNICATIONS HOLDINGS, INC. 21 Dec 2023 1 -$74K 4 VP & CHIEF LEGAL OFFICER 22 Dec 2023, 16:26
CCOI COGENT COMMUNICATIONS HOLDINGS, INC. 20 Dec 2023 3 $0 4 VP & CHIEF LEGAL OFFICER 20 Dec 2023, 16:03
CCOI COGENT COMMUNICATIONS HOLDINGS, INC. 14 Dec 2023 1 -$36K 4 VP & CHIEF LEGAL OFFICER 15 Dec 2023, 10:23
CCOI COGENT COMMUNICATIONS HOLDINGS, INC. 11 Dec 2023 1 -$207K 4 VP & CHIEF LEGAL OFFICER 11 Dec 2023, 16:23
CCOI COGENT COMMUNICATIONS HOLDINGS, INC. 01 Dec 2023 1 $0 4 VP & CHIEF LEGAL OFFICER 01 Dec 2023, 11:36
CCOI COGENT COMMUNICATIONS HOLDINGS, INC. 03 May 2023 2 -$365K 4 VP & CHIEF LEGAL OFFICER 04 May 2023, 12:08
CCOI COGENT COMMUNICATIONS HOLDINGS, INC. 17 Apr 2023 1 -$35K 4 VP & CHIEF LEGAL OFFICER 18 Apr 2023, 14:41
CCOI COGENT COMMUNICATIONS HOLDINGS, INC. 01 Feb 2023 1 -$140K 4 Chief Legal Officer 02 Feb 2023, 08:31
CCOI COGENT COMMUNICATIONS HOLDINGS, INC. 26 Jan 2023 1 -$34K 4 Chief Legal Officer 27 Jan 2023, 08:12
CCOI COGENT COMMUNICATIONS HOLDINGS, INC. 17 Jan 2023 1 -$66K 4 Chief Legal Officer 18 Jan 2023, 09:30
CCOI COGENT COMMUNICATIONS HOLDINGS, INC. 12 Jan 2023 1 -$96K 4 Chief Legal Officer 13 Jan 2023, 09:25
CCOI COGENT COMMUNICATIONS HOLDINGS, INC. 03 Jan 2023 1 $0 4 Chief Legal Officer 04 Jan 2023, 13:08
CCOI COGENT COMMUNICATIONS HOLDINGS, INC. 01 Dec 2022 1 $0 4 Director 01 Dec 2022, 09:06
CCOI COGENT COMMUNICATIONS HOLDINGS, INC. 05 Apr 2022 2 -$35.5K 4 Director 07 Apr 2022, 09:58
CCOI COGENT COMMUNICATIONS HOLDINGS, INC. 01 Apr 2022 1 -$10.2K 4 Director 04 Apr 2022, 10:22
CCOI COGENT COMMUNICATIONS HOLDINGS, INC. 31 Mar 2022 1 -$9.9K 4 VP & Chief Legal Officer 01 Apr 2022, 10:26
CCOI COGENT COMMUNICATIONS HOLDINGS, INC. 17 Mar 2022 1 -$37.8K 4 VP & Chief Legal Officer 18 Mar 2022, 14:01
CCOI COGENT COMMUNICATIONS HOLDINGS, INC. 03 Jan 2022 1 $0 4 VP & Chief Legal Officer 05 Jan 2022, 15:18
CCOI COGENT COMMUNICATIONS HOLDINGS, INC. 10 May 2021 1 -$44.6K 4 VP & Chief Legal Officer 11 May 2021, 09:45