<SEC-DOCUMENT>0001047469-18-006976-index.html : 20181101 <SEC-HEADER>0001047469-18-006976.hdr.sgml : 20181101 <ACCEPTANCE-DATETIME>20181101163422 ACCESSION NUMBER: 0001047469-18-006976 CONFORMED SUBMISSION TYPE: DEF 14A PUBLIC DOCUMENT COUNT: 10 CONFORMED PERIOD OF REPORT: 20181130 FILED AS OF DATE: 20181101 DATE AS OF CHANGE: 20181101 EFFECTIVENESS DATE: 20181101 FILER: 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 FILING VALUES: FORM TYPE: DEF 14A SEC ACT: 1934 Act SEC FILE NUMBER: 001-12691 FILM NUMBER: 181154292 BUSINESS ADDRESS: STREET 1: 2105 CITYWEST BLVD STREET 2: SUITE 100 CITY: HOUSTON STATE: TX ZIP: 770422855 BUSINESS PHONE: 2819333339 MAIL ADDRESS: STREET 1: 2105 CITYWEST BLVD STREET 2: SUITE 100 CITY: HOUSTON STATE: TX ZIP: 770422855 FORMER COMPANY: FORMER CONFORMED NAME: INPUT OUTPUT INC DATE OF NAME CHANGE: 19930328 </SEC-HEADER> <DOCUMENT> <TYPE>DEF 14A <SEQUENCE>1 <FILENAME>a2237021zdef14a.htm <DESCRIPTION>DEF 14A <TEXT> Document 1 - file: a2237021zdef14a.htm
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