<SEC-DOCUMENT>0001209191-15-021152-index.html : 20150303 <SEC-HEADER>0001209191-15-021152.hdr.sgml : 20150303 <ACCEPTANCE-DATETIME>20150303160029 ACCESSION NUMBER: 0001209191-15-021152 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20150301 FILED AS OF DATE: 20150303 DATE AS OF CHANGE: 20150303 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 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Williamson Ken CENTRAL INDEX KEY: 0001507574 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-12691 FILM NUMBER: 15668941 MAIL ADDRESS: STREET 1: 2105 CITYWEST BLVD. STREET 2: SUITE 400 CITY: HOUSTON STATE: TX ZIP: 77042-2839 </SEC-HEADER> <DOCUMENT> <TYPE>4 <SEQUENCE>1 <FILENAME>doc4.xml <DESCRIPTION>FORM 4 SUBMISSION <TEXT> Document 1 - file: doc4.html
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