<SEC-DOCUMENT>0000902664-21-002548-index.html : 20210430
<SEC-HEADER>0000902664-21-002548.hdr.sgml : 20210430
<ACCEPTANCE-DATETIME>20210430170118
ACCESSION NUMBER:		0000902664-21-002548
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210420
FILED AS OF DATE:		20210430
DATE AS OF CHANGE:		20210430

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Gates Jeffrey L
		CENTRAL INDEX KEY:			0001394416

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12691
		FILM NUMBER:		21879332

	MAIL ADDRESS:	
		STREET 1:		1177 AVENUE OF THE AMERICAS
		STREET 2:		46TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10036

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Gates Capital Management, Inc.
		CENTRAL INDEX KEY:			0001312908
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12691
		FILM NUMBER:		21879333

	BUSINESS ADDRESS:	
		STREET 1:		1177 AVE. OF THE AMERICAS
		STREET 2:		46TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10036
		BUSINESS PHONE:		212-626-1421

	MAIL ADDRESS:	
		STREET 1:		1177 AVE. OF THE AMERICAS
		STREET 2:		46TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10036

	FORMER NAME:	
		FORMER CONFORMED NAME:	Gates Capital Management Inc.
		DATE OF NAME CHANGE:	20041228

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Gates Capital Management GP, LLC
		CENTRAL INDEX KEY:			0001714043
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12691
		FILM NUMBER:		21879330

	BUSINESS ADDRESS:	
		STREET 1:		1177 AVENUE OF THE AMERICAS
		STREET 2:		46TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10036
		BUSINESS PHONE:		212-626-0251

	MAIL ADDRESS:	
		STREET 1:		1177 AVENUE OF THE AMERICAS
		STREET 2:		46TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10036

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Gates Capital Management, L.P.
		CENTRAL INDEX KEY:			0001630228
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12691
		FILM NUMBER:		21879331

	BUSINESS ADDRESS:	
		STREET 1:		1177 AVENUE OF THE AMERICAS
		STREET 2:		46TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10036
		BUSINESS PHONE:		(212) 626-1421

	MAIL ADDRESS:	
		STREET 1:		1177 AVENUE OF THE AMERICAS
		STREET 2:		46TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10036

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 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>
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<SEQUENCE>1
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Document 1 - file: ownership.html

Document 1 - RAW XML: ownership.xml

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