<SEC-DOCUMENT>0000902664-19-000188-index.html : 20190115 <SEC-HEADER>0000902664-19-000188.hdr.sgml : 20190115 <ACCEPTANCE-DATETIME>20190115104950 ACCESSION NUMBER: 0000902664-19-000188 CONFORMED SUBMISSION TYPE: SC 13G/A PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20190115 DATE AS OF CHANGE: 20190115 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/A SEC ACT: 1934 Act SEC FILE NUMBER: 005-41602 FILM NUMBER: 19526461 BUSINESS ADDRESS: STREET 1: 2105 CITYWEST BLVD STREET 2: SUITE 100 CITY: HOUSTON STATE: TX ZIP: 770422855 BUSINESS PHONE: 2819333339 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/A 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/A <SEQUENCE>1 <FILENAME>p19-0076sc13ga.htm <DESCRIPTION>ION GEOPHYSICAL CORPORATION <TEXT> Document 1 - file: p19-0076sc13ga.htm
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