0001209191-18-034701.txt : 20180601 0001209191-18-034701.hdr.sgml : 20180601 20180601164147 ACCESSION NUMBER: 0001209191-18-034701 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20160530 FILED AS OF DATE: 20180601 DATE AS OF CHANGE: 20180601 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: HULME COLIN CENTRAL INDEX KEY: 0001596114 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-12691 FILM NUMBER: 18875622 MAIL ADDRESS: STREET 1: 2105 CITYWEST BOULEVARD, SUITE 100 CITY: HOUSTON STATE: TX ZIP: 77042-2855 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 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 4 1 doc4.xml FORM 4 SUBMISSION X0306 4 2016-05-30 0 0000866609 ION GEOPHYSICAL CORP IO 0001596114 HULME COLIN 2105 CITYWEST BOULEVARD SUITE 100 HOUSTON TX 77042-2855 0 1 0 0 EVP, Ocean Bottom Services New Common Stock 2018-05-30 4 F 0 3354 23.80 D 74072 D New Common Stock 2018-06-01 4 F 0 787 24.50 D 73285 D These shares were withheld upon the vesting of restricted stock shares to pay tax withholding obligations. Rebecca F. Sacco, attorney-in-fact 2018-06-01