Attached files
| file | filename |
|---|---|
| EX-32.1 - EXHIBIT 32.1 - ION GEOPHYSICAL CORP | io-12312017x10kex321.htm |
| EX-32.2 - EXHIBIT 32.2 - ION GEOPHYSICAL CORP | io-12312017x10kex322.htm |
| EX-31.2 - EXHIBIT 31.2 - ION GEOPHYSICAL CORP | io-12312017x10kex312.htm |
| EX-31.1 - EXHIBIT 31.1 - ION GEOPHYSICAL CORP | io-12312017x10kex311.htm |
| EX-23.1 - EXHIBIT 23.1 - ION GEOPHYSICAL CORP | ex231.htm |
| EX-10.21 - EXHIBIT 10.21 - ION GEOPHYSICAL CORP | ex1021.htm |
| EX-10.20 - EXHIBIT 10.20 - ION GEOPHYSICAL CORP | ex1020.htm |
| EX-10.19 - EXHIBIT 10.19 - ION GEOPHYSICAL CORP | ex1019.htm |
| 10-K - 10-K - ION GEOPHYSICAL CORP | a12311710k2017.htm |
EXHIBIT 21.1
SUBSIDIARIES OF ION GEOPHYSICAL CORPORATION
as of 12/31/17
Subsidiary | Jurisdiction |
Concept Systems Holdings Limited | Scotland |
Concept Systems Limited | Scotland |
GMG/AXIS, Inc. | Delaware |
GX Geoscience Corporation S. de R.L. de C.V. | Mexico |
GX Technology Australia Pty Ltd. | Australia |
GX Technology Canada, Ltd. | Canada |
GX Technology Corporation | Texas |
GX Technology EAME, Limited | UK |
GX Technology Imaging Services Limited | Egypt |
GX Technology Poland Sp. Z o.o. | Poland |
GX Technology Processamento de Dados Ltda. | Brazil |
GX Technology Sismica Brasil Ltda. | Brazil |
GX Technology Trinidad, Ltd. | West Indies |
I/O Cayman Islands, Ltd. | Cayman Islands |
I/O International Holdings, Ltd. | Cayman Islands |
I/O International, Ltd. | Cayman Islands |
I/O Luxembourg S.à r.l. | Luxembourg |
I/O Marine Systems Limited | UK |
I/O Marine Systems, Inc. | Louisiana |
I/O U.K. Holdings Limited | Scotland |
“Inco” Industrial Components ‘s-Gravenhage B.V. | Netherlands |
ION China Holdings, Limited | Hong Kong |
ION E&P Advisors, Inc. | Delaware |
ION EPA Holdings, Inc. | Delaware |
ION Exploration Products (U.S.A.), Inc. | Delaware |
ION Geophysical CIS LLC | Russia |
ION Geophysical Sdn. Bhd. | Malaysia |
ION HPC Services, Inc. | Delaware |
ION International Holdings L.P. | Bermuda |
ION International S.à r.l. | Luxembourg |
IPOP Management, Inc. | Delaware |
OceanGeo B.V. | Netherlands |
OceanGeo Inc. | British Virgin Islands |
OceanGeo Ltd. | UK |
Oceangeo Tecnologia de Exploração de Reservatórios do Brasil S.A | Brazil |
Sailwings Canada Limited | Canada |
Sensor Nederland B.V. | Netherlands |