0001209191-13-056860.txt : 20131213 0001209191-13-056860.hdr.sgml : 20131213 20131213132914 ACCESSION NUMBER: 0001209191-13-056860 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20131213 FILED AS OF DATE: 20131213 DATE AS OF CHANGE: 20131213 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: ROLAND DAVID L CENTRAL INDEX KEY: 0001286832 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-12691 FILM NUMBER: 131275762 MAIL ADDRESS: STREET 1: ION GEOPHYSICAL CORPORATION STREET 2: 2101 CITYWEST, SUITE 400 CITY: HOUSTON STATE: TX ZIP: 77042-2839 4 1 doc4.xml FORM 4 SUBMISSION X0306 4 2013-12-13 0 0000866609 ION GEOPHYSICAL CORP IO 0001286832 ROLAND DAVID L 2105 CITYWEST BOULEVARD SUITE 400 HOUSTON TX 77042-2839 0 1 0 0 SVP-Gen Counsel & Corp Sec'y Common Stock 2013-12-13 4 P 0 1615 3.0075 A 88182 D This transaction was executed in multiple trades at prices ranging from $3.005 to $3.0083, 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. Debra A. Addington, attorney-in-fact 2013-12-13