<SEC-DOCUMENT>0000902664-18-001324-index.html : 20180222 <SEC-HEADER>0000902664-18-001324.hdr.sgml : 20180222 <ACCEPTANCE-DATETIME>20180222104915 ACCESSION NUMBER: 0000902664-18-001324 CONFORMED SUBMISSION TYPE: SC 13G PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20180222 DATE AS OF CHANGE: 20180222 SUBJECT COMPANY: 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 FILING VALUES: FORM TYPE: SC 13G SEC ACT: 1934 Act SEC FILE NUMBER: 005-41602 FILM NUMBER: 18631396 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 FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: Empery Asset Management, LP CENTRAL INDEX KEY: 0001469336 IRS NUMBER: 262107121 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G BUSINESS ADDRESS: STREET 1: 1 ROCKEFELLER PLAZA, SUITE 1205 CITY: NEW YORK STATE: NY ZIP: 10020 BUSINESS PHONE: 212-608-3300 MAIL ADDRESS: STREET 1: 1 ROCKEFELLER PLAZA, SUITE 1205 CITY: NEW YORK STATE: NY ZIP: 10020 </SEC-HEADER> <DOCUMENT> <TYPE>SC 13G <SEQUENCE>1 <FILENAME>p18-0721sc13g.htm <DESCRIPTION>ION GEOPHYSICAL CORP <TEXT> Document 1 - file: p18-0721sc13g.htm
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