BROOKS STEVEN D

Related Filers (12)

Ownership (93)

4/A
Wednesday, 1/3/2024
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Wednesday, 1/3/2024
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/A
Monday, 10/2/2023
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
Friday, 6/16/2023
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Friday, 5/12/2023
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
Wednesday, 1/4/2023
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Monday, 10/3/2022
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
Friday, 4/1/2022
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
Friday, 7/2/2021
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Tuesday, 5/4/2021
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
Monday, 1/4/2021
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
Wednesday, 7/1/2020
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, 1/2/2020
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Tuesday, 10/1/2019
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
Tuesday, 4/2/2019
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Wednesday, 3/13/2019
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
Monday, 10/1/2018
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Tuesday, 7/3/2018
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Thursday, 5/17/2018
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Wednesday, 5/9/2018
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Monday, 4/2/2018
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Tuesday, 1/2/2018
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Tuesday, 10/3/2017
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Tuesday, 8/8/2017
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Monday, 7/3/2017
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Wednesday, 5/3/2017
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Thursday, 3/16/2017
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Tuesday, 1/3/2017
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Monday, 10/3/2016
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Friday, 7/1/2016
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Monday, 4/4/2016
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Wednesday, 3/2/2016
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Tuesday, 1/5/2016
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Thursday, 10/1/2015
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Wednesday, 7/1/2015
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Wednesday, 4/1/2015
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Friday, 1/2/2015
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Wednesday, 10/1/2014
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Tuesday, 7/1/2014
COGENT COMMUNICATIONS HOLDINGS, INC.: Statement of changes in beneficial ownership of securities
4
Tuesday, 4/1/2014
COGENT COMMUNICATIONS GROUP INC: Statement of changes in beneficial ownership of securities
4
Friday, 1/3/2014
COGENT COMMUNICATIONS GROUP INC: Statement of changes in beneficial ownership of securities
4
Wednesday, 10/2/2013
COGENT COMMUNICATIONS GROUP INC: Statement of changes in beneficial ownership of securities
4
Tuesday, 7/2/2013
COGENT COMMUNICATIONS GROUP INC: Statement of changes in beneficial ownership of securities
4
Tuesday, 6/18/2013
COGENT COMMUNICATIONS GROUP INC: Statement of changes in beneficial ownership of securities
4
Tuesday, 4/2/2013
COGENT COMMUNICATIONS GROUP INC: Statement of changes in beneficial ownership of securities
4
Wednesday, 1/2/2013
COGENT COMMUNICATIONS GROUP INC: Statement of changes in beneficial ownership of securities
4
Monday, 10/1/2012
COGENT COMMUNICATIONS GROUP INC: Statement of changes in beneficial ownership of securities
4
Monday, 9/17/2012
COGENT COMMUNICATIONS GROUP INC: Statement of changes in beneficial ownership of securities
4
Monday, 7/2/2012
COGENT COMMUNICATIONS GROUP INC: Statement of changes in beneficial ownership of securities
4
Monday, 4/2/2012
COGENT COMMUNICATIONS GROUP INC: Statement of changes in beneficial ownership of securities
4
Tuesday, 1/3/2012
COGENT COMMUNICATIONS GROUP INC: Statement of changes in beneficial ownership of securities
4
Wednesday, 11/10/2010
COGENT COMMUNICATIONS GROUP INC: Statement of changes in beneficial ownership of securities
4
Tuesday, 1/5/2010
COGENT COMMUNICATIONS GROUP INC: Statement of changes in beneficial ownership of securities
4
Tuesday, 8/18/2009
COGENT COMMUNICATIONS GROUP INC: Statement of changes in beneficial ownership of securities
4
Monday, 1/5/2009
COGENT COMMUNICATIONS GROUP INC: Statement of changes in beneficial ownership of securities
4
Monday, 12/22/2008
COGENT COMMUNICATIONS GROUP INC: Statement of changes in beneficial ownership of securities
4
Friday, 11/14/2008
COGENT COMMUNICATIONS GROUP INC: Statement of changes in beneficial ownership of securities
4
Thursday, 1/3/2008
COGENT COMMUNICATIONS GROUP INC: Statement of changes in beneficial ownership of securities
4
Wednesday, 1/10/2007
COGENT COMMUNICATIONS GROUP INC: Statement of changes in beneficial ownership of securities
4
Thursday, 11/16/2006
COGENT COMMUNICATIONS GROUP INC: Statement of changes in beneficial ownership of securities
4
Tuesday, 1/31/2006
COGENT COMMUNICATIONS GROUP INC: Statement of changes in beneficial ownership of securities
4
Thursday, 2/17/2005
COGENT COMMUNICATIONS GROUP INC: Statement of changes in beneficial ownership of securities
4
Monday, 12/6/2004
COGENT COMMUNICATIONS GROUP INC: Statement of changes in beneficial ownership of securities
4
Thursday, 11/18/2004
PHARSIGHT CORP: Statement of changes in beneficial ownership of securities
4
Wednesday, 11/17/2004
PHARSIGHT CORP: Statement of changes in beneficial ownership of securities
4
Tuesday, 10/26/2004
PROXIM CORP: Statement of changes in beneficial ownership of securities
4
Monday, 10/25/2004
PROXIM CORP: Statement of changes in beneficial ownership of securities
4
Friday, 9/17/2004
PHARSIGHT CORP: Statement of changes in beneficial ownership of securities
4/A
Thursday, 8/5/2004
PROXIM CORP: Statement of changes in beneficial ownership of securities
4
Tuesday, 8/3/2004
PROXIM CORP: Statement of changes in beneficial ownership of securities
4
Tuesday, 8/3/2004
PROXIM CORP: Statement of changes in beneficial ownership of securities
4
Wednesday, 3/31/2004
COGENT COMMUNICATIONS GROUP INC: Statement of changes in beneficial ownership of securities
4
Wednesday, 1/21/2004
COGENT COMMUNICATIONS GROUP INC: Statement of changes in beneficial ownership of securities
4
Tuesday, 12/23/2003
PROXIM CORP: Statement of changes in beneficial ownership of securities
4
Tuesday, 12/23/2003
PROXIM CORP: Statement of changes in beneficial ownership of securities
4
Tuesday, 12/16/2003
PROXIM CORP: Statement of changes in beneficial ownership of securities
4
Tuesday, 12/16/2003
PROXIM CORP: Statement of changes in beneficial ownership of securities
4/A
Monday, 12/15/2003
PROXIM CORP: Statement of changes in beneficial ownership of securities
4
Wednesday, 11/26/2003
PROXIM CORP: Statement of changes in beneficial ownership of securities
4
Monday, 11/10/2003
PHARSIGHT CORP: Statement of changes in beneficial ownership of securities
4
Wednesday, 8/13/2003
COGENT COMMUNICATIONS GROUP INC: Statement of changes in beneficial ownership of securities
3
Monday, 8/11/2003
PROXIM CORP: Initial statement of beneficial ownership of securities
4
Wednesday, 6/18/2003
PHARSIGHT CORP: Statement of changes in beneficial ownership of securities
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