0001209191-16-152878.txt : 20161202 0001209191-16-152878.hdr.sgml : 20161202 20161202133851 ACCESSION NUMBER: 0001209191-16-152878 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20161201 FILED AS OF DATE: 20161202 DATE AS OF CHANGE: 20161202 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: SCHWAUSCH SCOTT CENTRAL INDEX KEY: 0001577175 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-12691 FILM NUMBER: 162030587 MAIL ADDRESS: STREET 1: 2105 CITYWEST BOULEVARD, SUITE 400 CITY: HOUSTON STATE: TX ZIP: 77042-2839 4 1 doc4.xml FORM 4 SUBMISSION X0306 4 2016-12-01 0 0000866609 ION GEOPHYSICAL CORP IO 0001577175 SCHWAUSCH SCOTT 2105 CITYWEST BOULEVARD SUITE 100 HOUSTON TX 77042-2855 0 1 0 0 VP & Corp Controller Common Stock 2016-12-01 4 F 0 31 7.40 D 3125 D These shares were withheld upon the vesting of restricted stock shares to pay tax withholding obligations. Rebecca F. Sacco, attorney-in-fact 2016-12-02