0001209191-16-107753.txt : 20160311 0001209191-16-107753.hdr.sgml : 20160311 20160311141244 ACCESSION NUMBER: 0001209191-16-107753 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20160309 FILED AS OF DATE: 20160311 DATE AS OF CHANGE: 20160311 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: HULME COLIN CENTRAL INDEX KEY: 0001596114 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-12691 FILM NUMBER: 161500276 MAIL ADDRESS: STREET 1: 2105 CITYWEST BOULEVARD, SUITE 400 CITY: HOUSTON STATE: TX ZIP: 77042 4 1 doc4.xml FORM 4 SUBMISSION X0306 4 2016-03-09 0 0000866609 ION GEOPHYSICAL CORP IO 0001596114 HULME COLIN 2105 CITYWEST BOULEVARD SUITE 400 HOUSTON TX 77042 0 1 0 0 EVP, Ocean Bottom Services Common Stock 2016-03-09 4 P 0 3000 6.4899 A 20703 D Common Stock 2016-03-11 4 P 0 3000 6.8202 A 23703 D This transaction was executed in multiple trades at prices ranging from $6.77 to $6.85, inclusive. The price set forth above reflects the weighted-average price per share. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected. Rebecca F. Sacco, attorney-in-fact 2016-03-11