<SEC-DOCUMENT>9999999995-19-002916-index.html : 20191226
<SEC-HEADER>9999999995-19-002916.hdr.sgml : 20191226
<ACCEPTANCE-DATETIME>20191224001520
ACCESSION NUMBER:		9999999995-19-002916
CONFORMED SUBMISSION TYPE:	EFFECT
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20191223
DATE AS OF CHANGE:		20191224
EFFECTIVENESS DATE:		20191223

FILER:

	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:		EFFECT
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-234606
		FILM NUMBER:		191308003

	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
</SEC-HEADER>
<DOCUMENT>
<TYPE>EFFECT
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
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Document 1 - RAW XML: primary_doc.xml

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