FRIEDEMANN CHRIS
Related Filers (1)
Ownership (12)
4
Friday, 12/3/2010
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
Wednesday, 12/3/2008
ION GEOPHYSICAL CORP: Statement of changes in beneficial ownership of securities
4
Thursday, 9/4/2008
ION GEOPHYSICAL CORP: Statement of changes in beneficial ownership of securities
4
Wednesday, 8/6/2008
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
Tuesday, 9/5/2006
INPUT OUTPUT INC: Statement of changes in beneficial ownership of securities
4
Thursday, 5/18/2006
INPUT OUTPUT INC: Statement of changes in beneficial ownership of securities
4
Thursday, 8/4/2005
INPUT OUTPUT INC: Statement of changes in beneficial ownership of securities
4
Thursday, 11/4/2004
INPUT OUTPUT INC: Statement of changes in beneficial ownership of securities
4
Friday, 9/3/2004
INPUT OUTPUT INC: Statement of changes in beneficial ownership of securities
3
Friday, 12/12/2003
INPUT OUTPUT INC: Initial statement of beneficial ownership of securities