| 02 Jun 2021 | SALE | COGENT COMMUNICATIONS HOLDINGS, INC. | 2,400 | 75.18 USD | |
| 12 Mar 2021 | SALE | COGENT COMMUNICATIONS HOLDINGS, INC. | 4,000 | 63.30 USD | |
| 05 Mar 2021 | SALE | COGENT COMMUNICATIONS HOLDINGS, INC. | 1,200 | 57.78 USD | |
| 24 Feb 2021 | GRANT_AWARD | COGENT COMMUNICATIONS HOLDINGS, INC. | 9,600 | 0.00 USD | |
| 07 Dec 2020 | SALE | COGENT COMMUNICATIONS HOLDINGS, INC. | 2,000 | 57.76 USD | |
| 01 Dec 2020 | GRANT_AWARD | COGENT COMMUNICATIONS HOLDINGS, INC. | 2,400 | 0.00 USD | |
| 15 Sept 2020 | SALE | COGENT COMMUNICATIONS HOLDINGS, INC. | 400 | 66.35 USD | |
| 08 Sept 2020 | SALE | COGENT COMMUNICATIONS HOLDINGS, INC. | 2,000 | 65.57 USD | |
| 16 Jun 2020 | SALE | COGENT COMMUNICATIONS HOLDINGS, INC. | 400 | 80.49 USD | |
| 05 Jun 2020 | SALE | COGENT COMMUNICATIONS HOLDINGS, INC. | 2,000 | 76.81 USD | |
| 10 Mar 2020 | SALE | COGENT COMMUNICATIONS HOLDINGS, INC. | 1,352 | 82.68 USD | |
| 06 Mar 2020 | SALE | COGENT COMMUNICATIONS HOLDINGS, INC. | 2,000 | 84.64 USD | |
| 14 Feb 2020 | GRANT_AWARD | COGENT COMMUNICATIONS HOLDINGS, INC. | 9,600 | 0.00 USD | |
| 07 Jan 2020 | SALE | COGENT COMMUNICATIONS HOLDINGS, INC. | 2,000 | 67.42 USD | |
| 06 Dec 2019 | SALE | COGENT COMMUNICATIONS HOLDINGS, INC. | 2,000 | 61.97 USD | |
| 02 Dec 2019 | SALE | COGENT COMMUNICATIONS HOLDINGS, INC. | 1,000 | 62.60 USD | |
| 11 Nov 2019 | SALE | COGENT COMMUNICATIONS HOLDINGS, INC. | 2,500 | 63.29 USD | |
| 30 Aug 2019 | SALE | COGENT COMMUNICATIONS HOLDINGS, INC. | 1,000 | 60.98 USD | |
| 06 Jun 2019 | SALE | COGENT COMMUNICATIONS HOLDINGS, INC. | 4,000 | 58.62 USD | |
| 31 May 2019 | SALE | COGENT COMMUNICATIONS HOLDINGS, INC. | 1,000 | 57.52 USD | |
| 01 May 2019 | GRANT_AWARD | COGENT COMMUNICATIONS HOLDINGS, INC. | 9,600 | 0.00 USD | |
| 13 Mar 2019 | SALE | COGENT COMMUNICATIONS HOLDINGS, INC. | 2,000 | 51.00 USD | |
| 01 Mar 2019 | SALE | COGENT COMMUNICATIONS HOLDINGS, INC. | 2,000 | 48.96 USD | |
| 19 Feb 2019 | SALE | COGENT COMMUNICATIONS HOLDINGS, INC. | 1,000 | 50.00 USD | |
| 01 Oct 2018 | SALE | COGENT COMMUNICATIONS HOLDINGS, INC. | 1,000 | 55.80 USD | |