<SEC-DOCUMENT>0001104659-21-022141-index.html : 20210212
<SEC-HEADER>0001104659-21-022141.hdr.sgml : 20210212
<ACCEPTANCE-DATETIME>20210212172013
ACCESSION NUMBER:		0001104659-21-022141
CONFORMED SUBMISSION TYPE:	S-4/A
PUBLIC DOCUMENT COUNT:		16
FILED AS OF DATE:		20210212
DATE AS OF CHANGE:		20210212

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:		S-4/A
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-252591
		FILM NUMBER:		21629772

	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

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			GX Geoscience Corporation, S. de R.L. de C.V.
		CENTRAL INDEX KEY:			0001841419
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			O5
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		S-4/A
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-252591-01
		FILM NUMBER:		21629771

	BUSINESS ADDRESS:	
		STREET 1:		2105 CITYWEST BLVD., SUITE 100
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77042
		BUSINESS PHONE:		2819333339

	MAIL ADDRESS:	
		STREET 1:		2105 CITYWEST BLVD., SUITE 100
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77042

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			I/O MARINE SYSTEMS, INC.
		CENTRAL INDEX KEY:			0001600904
		IRS NUMBER:				720733230
		STATE OF INCORPORATION:			LA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		S-4/A
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-252591-02
		FILM NUMBER:		21629770

	BUSINESS ADDRESS:	
		STREET 1:		2105 CITYWEST BOULEVARD
		STREET 2:		SUITE 100
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77042-2855
		BUSINESS PHONE:		281.552.3308

	MAIL ADDRESS:	
		STREET 1:		2105 CITYWEST BOULEVARD
		STREET 2:		SUITE 100
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77042-2855

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ION EXPLORATION PRODUCTS (U.S.A.), INC.
		CENTRAL INDEX KEY:			0001600906
		IRS NUMBER:				760491394
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		S-4/A
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-252591-03
		FILM NUMBER:		21629769

	BUSINESS ADDRESS:	
		STREET 1:		2105 CITYWEST BOULEVARD
		STREET 2:		SUITE 100
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77042-2855
		BUSINESS PHONE:		281-552-3308

	MAIL ADDRESS:	
		STREET 1:		2105 CITYWEST BOULEVARD
		STREET 2:		SUITE 100
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77042-2855

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			GX Technology Corp
		CENTRAL INDEX KEY:			0001600867
		IRS NUMBER:				760450115
		STATE OF INCORPORATION:			TX
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		S-4/A
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-252591-04
		FILM NUMBER:		21629768

	BUSINESS ADDRESS:	
		STREET 1:		2105 CITYWEST SUITE 900
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77042
		BUSINESS PHONE:		2819333339

	MAIL ADDRESS:	
		STREET 1:		2105 CITYWEST SUITE 900
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77042
</SEC-HEADER>
<DOCUMENT>
<TYPE>S-4/A
<SEQUENCE>1
<FILENAME>tm214556-3_s4a.htm
<DESCRIPTION>S-4/A
<TEXT>
Document 1 - file: tm214556-3_s4a.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>2
<FILENAME>tm214556d4_ex5-1.htm
<DESCRIPTION>EXHIBIT 5.1
<TEXT>
Document 2 - file: tm214556d4_ex5-1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.1
<SEQUENCE>3
<FILENAME>tm214556d4_ex23-1.htm
<DESCRIPTION>EXHIBIT 23.1
<TEXT>
Document 3 - file: tm214556d4_ex23-1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-25.1
<SEQUENCE>4
<FILENAME>tm214556d4_ex25-1.htm
<DESCRIPTION>EXHIBIT 25.1
<TEXT>
Document 4 - file: tm214556d4_ex25-1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>lg_ion-pn.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: lg_ion-pn.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>sg_christophertusher-bw.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 6 - file: sg_christophertusher-bw.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>tm214556d1-equ_formula1lr.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 7 - file: tm214556d1-equ_formula1lr.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>8
<FILENAME>tm214556d1-equ_formula2lr.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 8 - file: tm214556d1-equ_formula2lr.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>9
<FILENAME>tm214556d1-equ_formula3lr.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 9 - file: tm214556d1-equ_formula3lr.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>10
<FILENAME>tm214556d1-equ_formula4lr.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 10 - file: tm214556d1-equ_formula4lr.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>11
<FILENAME>tm214556d1-equ_formula5lr.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 11 - file: tm214556d1-equ_formula5lr.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>12
<FILENAME>tm214556d1-equ_formula6lr.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 12 - file: tm214556d1-equ_formula6lr.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>13
<FILENAME>tm214556d4_ex5-1img001.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 13 - file: tm214556d4_ex5-1img001.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>14
<FILENAME>tm214556d4_ex5-1img002.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 14 - file: tm214556d4_ex5-1img002.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>15
<FILENAME>tm214556d4_ex25-1img001.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 15 - file: tm214556d4_ex25-1img001.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>16
<FILENAME>tm214556d4_ex25-1img002.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 16 - file: tm214556d4_ex25-1img002.jpg

</DOCUMENT>
</SEC-DOCUMENT>