0001209191-11-059428.txt : 20111205 0001209191-11-059428.hdr.sgml : 20111205 20111205145843 ACCESSION NUMBER: 0001209191-11-059428 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20111201 FILED AS OF DATE: 20111205 DATE AS OF CHANGE: 20111205 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: 111242891 MAIL ADDRESS: STREET 1: 2105 CITYWEST BLVD. STREET 2: SUITE 400 CITY: HOUSTON STATE: TX ZIP: 77042-2839 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 4 1 doc4.xml FORM 4 SUBMISSION X0304 4 2011-12-01 0 0000866609 ION GEOPHYSICAL CORP IO 0001507574 Williamson Ken 2105 CITYWEST BOULEVARD SUITE 400 HOUSTON TX 77042-2839 0 1 0 0 SVP, GeoVentures Common Stock 2011-12-01 4 A 0 15000 0.00 A 74178 D Common Stock 2011-12-01 4 F 0 353 5.81 D 73825 D Common Stock 2011-12-01 4 F 0 529 5.81 D 73296 D Common Stock 2011-12-01 4 F 0 882 5.81 D 72414 D Employee stock option (right to buy) 5.81 2011-12-01 4 A 0 50000 0.00 A 2021-12-01 Common Stock 50000 50000 D Includes 351 shares purchased through the ION Employee Stock Purchase Plan that were inadvertently included on Form 3/A. The option becomes exercisable in four equal annual installments beginning on the first anniversary of the date specified in Column 3. /s/ Debra A. Addington, attorney-in-fact 2011-12-05