-----BEGIN PRIVACY-ENHANCED MESSAGE----- Proc-Type: 2001,MIC-CLEAR Originator-Name: webmaster@www.sec.gov Originator-Key-Asymmetric: MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB MIC-Info: RSA-MD5,RSA, OyGIxq5CVUzbblgqBf7G6MlX6IM1KsDlLCOCRFiwEnpSXC16TkizCZvJrlrvO1Ew U/Inb1Cp0woZxdCHoCx0ow== 0001209191-10-058197.txt : 20101203 0001209191-10-058197.hdr.sgml : 20101203 20101203120647 ACCESSION NUMBER: 0001209191-10-058197 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20101201 FILED AS OF DATE: 20101203 DATE AS OF CHANGE: 20101203 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: MARSH G THOMAS CENTRAL INDEX KEY: 0001250052 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-12691 FILM NUMBER: 101230494 MAIL ADDRESS: STREET 1: 6801 ROCKLEDGE DRIVE CITY: BETHESDA STATE: MD ZIP: 3018976255 4 1 doc4.xml FORM 4 SUBMISSION X0303 4 2010-12-01 1 0000866609 ION GEOPHYSICAL CORP IO 0001250052 MARSH G THOMAS 2105 CITYWEST BLVD. SUITE 400 HOUSTON TX 77042-2839 1 0 0 0 Common stock 2010-12-01 4 A 0 12000 0.00 A 94000 D Issued pursuant to the ION Geophysical Corporation 2004 Long-term Incentive Plan. /s/ Debra A. Addington, attorney-in-fact 2010-12-03 -----END PRIVACY-ENHANCED MESSAGE-----