Press Release

The report prepared by Ledouble SAS, appointed as independent appraiser to give an opinion on the fairness to the shareholders of the contemplated financial restructuring of CGG as a whole, is available on the website www.cgg.com.

CGG SA announces that all creditor classes entitled to vote on the chapter 11 plan proposed in the chapter 11 cases commenced on 14 June 2017 in the US Bankruptcy Court for the Southern District of New York by CGG SA’s 14 main foreign, direct and indirect subsidiaries, each a borrower or guaranto

CGG announces that, today, the Autorité des marchés financiers granted visa n°17-551 to the prospectus (in the French language) made available to the public in connection with: