0001209191-11-016176.txt : 20110308 0001209191-11-016176.hdr.sgml : 20110308 20110308140044 ACCESSION NUMBER: 0001209191-11-016176 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20110304 FILED AS OF DATE: 20110308 DATE AS OF CHANGE: 20110308 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Bernitsas Nikolaos CENTRAL INDEX KEY: 0001507376 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-12691 FILM NUMBER: 11671439 MAIL ADDRESS: STREET 1: 2105 CITYWEST BLVD. STREET 2: SUITE 400 CITY: HOUSTON STATE: TX ZIP: 77042 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: ION GEOPHYSICAL CORP CENTRAL INDEX KEY: 0000866609 STANDARD INDUSTRIAL CLASSIFICATION: OIL AND GAS FIELD EXPLORATION SERVICES [1382] IRS NUMBER: 222286646 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 2105 CITYWEST BLVD STREET 2: SUITE 400 CITY: HOUSTON STATE: TX ZIP: 770422839 BUSINESS PHONE: 281.933.3339 MAIL ADDRESS: STREET 1: 2105 CITYWEST BLVD STREET 2: SUITE 400 CITY: HOUSTON STATE: TX ZIP: 770422839 FORMER COMPANY: FORMER CONFORMED NAME: INPUT OUTPUT INC DATE OF NAME CHANGE: 19930328 4 1 doc4.xml FORM 4 SUBMISSION X0303 4 2011-03-04 0 0000866609 ION GEOPHYSICAL CORP IO 0001507376 Bernitsas Nikolaos 2105 CITYWEST BLVD. SUITE 400 HOUSTON TX 77042 0 1 0 0 SVP, GXT Imaging Common stock 2011-03-04 4 S 0 7355 13.09 D 59059 D /s/ Debra A. Addington, attorney-in-fact 2011-03-08