Pursuant to that certain Investor Rights Agreement by and between BGP Inc., China National Petroleum corporation (BGP) and ION Geophysical Corporation dated March 25, 2010, BGP is entitled to appoint one nominee to the Board of Directors of ION Geophysical Corporation (the Board'), and to appoint replacements of such director from time to time. In accordance with the Investor Rights Agreement, BGP appointed Mr. Zheng HuaSheng to the Board effective as of April 13, 2018, to replace its prior Board appointee, Mr. Hao Huimin. Mr. Hao's service on the Board ended on April 12, 2018, immediately prior to Mr. Zheng's appointment taking effect. The Board unanimously approved Mr. Zheng's appointment to the Board. Mr. Zheng, has been employed by China National Petroleum Corporation (CNPC). Since 2018, he has been Executive Vice President of BGP. From 2005 to 2009, Mr. Zheng was President of BGP International and Assistant President of BGP. From 2010 to 2018, Mr. Zheng was Vice President of BGP. He holds a Masters of Business Administration degree from the University of Calgary, Haskayne School of Business.