0001209191-13-044341.txt : 20130916 0001209191-13-044341.hdr.sgml : 20130916 20130916161009 ACCESSION NUMBER: 0001209191-13-044341 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20130913 FILED AS OF DATE: 20130916 DATE AS OF CHANGE: 20130916 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: Heinlein Gregory J CENTRAL INDEX KEY: 0001335990 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-12691 FILM NUMBER: 131098990 MAIL ADDRESS: STREET 1: ION GEOPHYSICAL CORPORATION STREET 2: 2105 CITYWEST BOULEVARD, STE 400 CITY: HOUSTON STATE: TX ZIP: 77042-2839 4 1 doc4.xml FORM 4 SUBMISSION X0306 4 2013-09-13 0 0000866609 ION GEOPHYSICAL CORP IO 0001335990 Heinlein Gregory J 2105 CITYWEST BOULEVARD SUITE 400 HOUSTON TX 77042 0 1 0 0 SVP and CFO Common Stock 2013-09-13 4 P 0 1000 4.79 A 32169 D Rebecca F. Sacco, attorney-in-fact 2013-09-16