X0401 D/A LIVE 0000866609 ION GEOPHYSICAL CORP 2105 CITYWEST BLVD SUITE 400 HOUSTON TX 770422839 281.933.3339 INPUT OUTPUT INC DELAWARE Corporation true ROBERT P. PEEBLER 2105 CITYWEST BLVD. SUITE 400 HOUSTON TX 77042 Executive Officer Director CHIEF EXECUTIVE OFFICER AND DIRECTOR JAMES R. HOLLIS 2105 CITYWEST BLVD. SUITE 400 HOUSTON TX 77042 Executive Officer PRESIDENT AND CHIEF OPERATING OFFICER R. BRIAN HANSON 2105 CITYWEST BLVD. SUITE 400 HOUSTON TX 77042 Executive Officer EXECUTIVE VICE PRESIDENT AND CHIEF FINANCIAL OFFICER TENG BENG KOID 2105 CITYWEST BLVD. SUITE 400 HOUSTON TX 77042 Executive Officer EXECUTIVE VICE PRESIDENT, GLOBAL BUSINESS DEVELOPMENT CHRISTOPHER M. FRIEDEMANN 2105 CITYWEST BLVD. SUITE 400 HOUSTON TX 77042 Executive Officer SENIOR VICE PRESIDENT, CORPORATE MARKETING DAVID L. ROLAND 2105 CITYWEST BLVD. HOUSTON TX 77042 Executive Officer SENIOR VICE PRESIDENT, GENERAL COUNSEL AND CORPORATE SECRETARY MICHAEL L. MORRISON 2105 CITYWEST BLVD. SUITE 400 HOUSTON TX 77042 Executive Officer VICE PRESIDENT AND CORPORATE CONTROLLER JAMES M. LAPEYRE, JR. 2105 CITYWEST BLVD. SUITE 400 HOUSTON TX 77042 Director BRUCE S. APPELBAUM 2105 CITYWEST BLVD. SUITE 400 HOUSTON TX 77042 Director THEODORE H. ELLIOT, JR. 2105 CITYWEST BLVD. SUITE 400 HOUSTON TX 77042 Director G. THOMAS MARSH 2105 CITYWEST BLVD. SUITE 400 HOUSTON TX 77042 Director FRANKLIN MYERS 2105 CITYWEST BLVD. SUITE 400 HOUSTON TX 77042 Director S. JAMES NELSON, JR. 2105 CITYWEST BLVD. SUITE 400 HOUSTON TX 77042 Director JOHN N. SEITZ 2105 CITYWEST BLVD. SUITE 400 HOUSTON TX 77042 Director NICHOLAS G. VLAHAKIS 2105 CITYWEST BLVD. SUITE 400 HOUSTON TX 77042 Director Oil and Gas Over $100,000,000 06 true 0000866609-09-000001 2009-06-01 false true false 0 BARCLAYS CAPITAL INC. 19714 BARCLAYS CAPITAL INC. 19714 200 PARK AVENUE NEW YORK NY 10166 CA CO CT IL KS MD MN NY NC PA 40700000 40700000 0 false 12 2035000 true 0 0 true false ION GEOPHYSICAL CORP /s/ David L. Roland David L. Roland Sr. VP, General Counsel and Corporate Secretary 2009-07-01