FERGUSON Lewis H
Related Filers (1)
Other (2)
144
Thursday, 11/30/2023
Filing for proposed sale of securities under Rule 144
144
Tuesday, 8/29/2023
Filing for proposed sale of securities under Rule 144
Ownership (47)
4
Wednesday, 1/3/2024
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Thursday, 11/30/2023
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Tuesday, 10/3/2023
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Tuesday, 8/29/2023
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Wednesday, 7/5/2023
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Wednesday, 5/31/2023
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Wednesday, 4/5/2023
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Monday, 3/13/2023
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Wednesday, 1/4/2023
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Tuesday, 11/29/2022
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Tuesday, 10/4/2022
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Tuesday, 9/13/2022
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Tuesday, 7/5/2022
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Tuesday, 5/31/2022
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Monday, 4/4/2022
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Wednesday, 3/9/2022
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Wednesday, 12/8/2021
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Friday, 10/1/2021
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Wednesday, 9/1/2021
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Friday, 7/2/2021
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Thursday, 6/3/2021
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Thursday, 4/1/2021
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Friday, 3/12/2021
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Monday, 1/4/2021
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Thursday, 12/10/2020
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Thursday, 10/1/2020
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Tuesday, 9/8/2020
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Wednesday, 7/1/2020
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Tuesday, 6/9/2020
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Wednesday, 4/1/2020
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Thursday, 3/12/2020
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Thursday, 1/2/2020
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Friday, 12/13/2019
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Wednesday, 10/2/2019
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Wednesday, 9/11/2019
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Tuesday, 7/2/2019
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Friday, 5/24/2019
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Thursday, 5/23/2019
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Friday, 3/8/2019
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Thursday, 1/3/2019
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Friday, 12/14/2018
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
3
Monday, 10/1/2018
COGENT COMMUNICATIONS HOLDINGS, INC.: Initial statement of beneficial ownership of securities
4
Monday, 10/1/2018
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Friday, 3/13/2009
COGENT COMMUNICATIONS GROUP INC: Statement of changes in beneficial ownership of securities
4
Friday, 1/9/2009
COGENT COMMUNICATIONS GROUP INC: Statement of changes in beneficial ownership of securities
4
Wednesday, 1/2/2008
COGENT COMMUNICATIONS GROUP INC: Statement of changes in beneficial ownership of securities
3
Friday, 4/6/2007
COGENT COMMUNICATIONS GROUP INC: Initial statement of beneficial ownership of securities