0001209191-16-109108.txt : 20160317 0001209191-16-109108.hdr.sgml : 20160317 20160317161707 ACCESSION NUMBER: 0001209191-16-109108 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20160315 FILED AS OF DATE: 20160317 DATE AS OF CHANGE: 20160317 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: Usher Christopher Theron CENTRAL INDEX KEY: 0001481492 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-12691 FILM NUMBER: 161512727 MAIL ADDRESS: STREET 1: 2105 CITYWEST BLVD. STREET 2: SUITE 400 CITY: HOUSTON STATE: TX ZIP: 77042-2839 4 1 doc4.xml FORM 4 SUBMISSION X0306 4 2016-03-15 0 0000866609 ION GEOPHYSICAL CORP IO 0001481492 Usher Christopher Theron 2105 CITYWEST BOULEVARD SUITE 400 HOUSTON TX 77042-2839 0 1 0 0 EVP & COO, E&P OPER OPTIMINIZA Common Stock 2016-03-15 4 P 0 1300 6.8892 A 19849 D This transaction was executed in multiple trades at prices ranging from $6.8841 to $6.8904, 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 2016-03-17