Hanson R Brian
Related Filers (2)
Ownership (49)
4
Tuesday, 6/4/2019
ION GEOPHYSICAL CORP: Statement of changes in beneficial ownership of securities
4
Tuesday, 3/5/2019
ION GEOPHYSICAL CORP: Statement of changes in beneficial ownership of securities
4
Tuesday, 12/4/2018
ION GEOPHYSICAL CORP: Statement of changes in beneficial ownership of securities
4
Tuesday, 6/26/2018
ION GEOPHYSICAL CORP: Statement of changes in beneficial ownership of securities
4
Wednesday, 6/20/2018
ION GEOPHYSICAL CORP: Statement of changes in beneficial ownership of securities
4
Friday, 6/1/2018
ION GEOPHYSICAL CORP: Statement of changes in beneficial ownership of securities
4
Friday, 3/2/2018
ION GEOPHYSICAL CORP: Statement of changes in beneficial ownership of securities
4
Tuesday, 12/19/2017
ION GEOPHYSICAL CORP: Statement of changes in beneficial ownership of securities
4
Monday, 12/18/2017
ION GEOPHYSICAL CORP: Statement of changes in beneficial ownership of securities
4
Friday, 6/2/2017
ION GEOPHYSICAL CORP: Statement of changes in beneficial ownership of securities
4
Friday, 3/3/2017
ION GEOPHYSICAL CORP: Statement of changes in beneficial ownership of securities
4
Monday, 12/5/2016
ION GEOPHYSICAL CORP: Statement of changes in beneficial ownership of securities
4
Thursday, 6/2/2016
ION GEOPHYSICAL CORP: Statement of changes in beneficial ownership of securities
4
Wednesday, 3/2/2016
ION GEOPHYSICAL CORP: Statement of changes in beneficial ownership of securities
4
Thursday, 11/19/2015
ION GEOPHYSICAL CORP: Statement of changes in beneficial ownership of securities
4
Wednesday, 11/18/2015
ION GEOPHYSICAL CORP: Statement of changes in beneficial ownership of securities
4
Tuesday, 3/3/2015
ION GEOPHYSICAL CORP: Statement of changes in beneficial ownership of securities
4/A
Wednesday, 12/3/2014
ION GEOPHYSICAL CORP: Statement of changes in beneficial ownership of securities
4
Wednesday, 12/3/2014
ION GEOPHYSICAL CORP: Statement of changes in beneficial ownership of securities
4
Wednesday, 9/3/2014
ION GEOPHYSICAL CORP: Statement of changes in beneficial ownership of securities
4
Tuesday, 3/4/2014
ION GEOPHYSICAL CORP: Statement of changes in beneficial ownership of securities
4
Tuesday, 12/3/2013
ION GEOPHYSICAL CORP: Statement of changes in beneficial ownership of securities
4
Wednesday, 9/4/2013
ION GEOPHYSICAL CORP: Statement of changes in beneficial ownership of securities
4
Tuesday, 6/4/2013
ION GEOPHYSICAL CORP: Statement of changes in beneficial ownership of securities
4
Wednesday, 2/20/2013
ION GEOPHYSICAL CORP: Statement of changes in beneficial ownership of securities
4
Tuesday, 12/4/2012
ION GEOPHYSICAL CORP: Statement of changes in beneficial ownership of securities
4
Thursday, 9/6/2012
ION GEOPHYSICAL CORP: Statement of changes in beneficial ownership of securities
4
Monday, 12/5/2011
ION GEOPHYSICAL CORP: Statement of changes in beneficial ownership of securities
4
Tuesday, 9/6/2011
ION GEOPHYSICAL CORP: Statement of changes in beneficial ownership of securities
4
Tuesday, 4/5/2011
ION GEOPHYSICAL CORP: Statement of changes in beneficial ownership of securities
4
Wednesday, 3/2/2011
ION GEOPHYSICAL CORP: Statement of changes in beneficial ownership of securities
4/A
Thursday, 2/3/2011
ION GEOPHYSICAL CORP: Statement of changes in beneficial ownership of securities
4
Friday, 12/3/2010
ION GEOPHYSICAL CORP: Statement of changes in beneficial ownership of securities
4
Monday, 11/22/2010
ION GEOPHYSICAL CORP: Statement of changes in beneficial ownership of securities
4
Wednesday, 6/2/2010
ION GEOPHYSICAL CORP: Statement of changes in beneficial ownership of securities
4
Wednesday, 12/2/2009
ION GEOPHYSICAL CORP: Statement of changes in beneficial ownership of securities
4
Tuesday, 11/24/2009
ION GEOPHYSICAL CORP: Statement of changes in beneficial ownership of securities
4
Wednesday, 5/27/2009
ION GEOPHYSICAL CORP: Statement of changes in beneficial ownership of securities
4
Wednesday, 12/3/2008
ION GEOPHYSICAL CORP: Statement of changes in beneficial ownership of securities
4
Wednesday, 11/12/2008
ION GEOPHYSICAL CORP: Statement of changes in beneficial ownership of securities
4
Friday, 5/23/2008
ION GEOPHYSICAL CORP: Statement of changes in beneficial ownership of securities
4
Tuesday, 12/4/2007
ION GEOPHYSICAL CORP: Statement of changes in beneficial ownership of securities
4
Friday, 8/17/2007
INPUT OUTPUT INC: Statement of changes in beneficial ownership of securities
4
Tuesday, 9/5/2006
INPUT OUTPUT INC: Statement of changes in beneficial ownership of securities
3
Monday, 5/22/2006
INPUT OUTPUT INC: Initial statement of beneficial ownership of securities
4
Monday, 5/22/2006
INPUT OUTPUT INC: Statement of changes in beneficial ownership of securities
4
Tuesday, 1/4/2005
ALLIANCE IMAGING INC /DE/: Statement of changes in beneficial ownership of securities
4
Friday, 11/5/2004
ALLIANCE IMAGING INC /DE/: Statement of changes in beneficial ownership of securities
3
Friday, 7/30/2004
ALLIANCE IMAGING INC /DE/: Initial statement of beneficial ownership of securities