<SEC-DOCUMENT>0000866609-18-000030-index.html : 20180516 <SEC-HEADER>0000866609-18-000030.hdr.sgml : 20180516 <ACCEPTANCE-DATETIME>20180516171839 ACCESSION NUMBER: 0000866609-18-000030 CONFORMED SUBMISSION TYPE: 8-K PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20180516 ITEM INFORMATION: Submission of Matters to a Vote of Security Holders FILED AS OF DATE: 20180516 DATE AS OF CHANGE: 20180516 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: 8-K SEC ACT: 1934 Act SEC FILE NUMBER: 001-12691 FILM NUMBER: 18840901 BUSINESS ADDRESS: STREET 1: 2105 CITYWEST BLVD STREET 2: SUITE 100 CITY: HOUSTON STATE: TX ZIP: 770422855 BUSINESS PHONE: 281.933.3339 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>8-K <SEQUENCE>1 <FILENAME>a8-k2018annualmeeting.htm <DESCRIPTION>8-K <TEXT> Document 1 - file: a8-k2018annualmeeting.htm
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