CGG

Report Publication Announcement • Apr 18, 2016

CGG

Société Anonyme with a share capital of €283,304,307 Registered office: Tour Maine Montparnasse, 33 avenue du Maine, 75015 Paris No.: 969 202 241 – RCS Paris

Information Related to the Availability of the Document de Référence and Report on Form 20-F for 2015

Paris, France – April 18, 2016 :

CGG announced today that its Document de référence and report on Form 20-F for 2015 were filed with the Autorité des Marchés Financiers (AMF) and the SEC on April 15, 2016 respectively.

Both documents are available to the public under the conditions provided by law.

They are also available on the Company's website (www.cgg.com) under the Investors/Financial Reports section as well as on the AMF website for the Document de référence (www.amf-france.org) and the SEC website for the report on Form 20-F (www.sec.gov).

The following information is included in the Document de référence:

• the information related to auditors' fees paid during fiscal year 2015;
• the description of the share buyback program provided under article 241-2 of the Règlement Général of the AMF;
• the report of the Chairman on internal control procedures and the auditors' reports related thereto;
• the annual financial report mentioned under article L.451-1-2 of the French Code Monétaire et Financier.

Our audited financial statements for fiscal year 2015 are also included in the Document de référence and the report on Form 20-F, filed with the AMF and the SEC on April 15, 2016. A printed copy of these documents is available upon request, free of charge, if you call our Investor Relations Department at: +33.1.64.47.35.46, or send an email to invrelparis@cgg.com or write to: CGG – Investor Relations Department – Tour Maine Montparnasse, 33 avenue du Maine, 75015 Paris, France.

About CGG

CGG (www.cgg.com) is a fully integrated Geoscience company providing leading geological, geophysical and reservoir capabilities to its broad base of customers primarily from the global oil and gas industry. Through its three operating segments of Equipment, Acquisition and Geology, Geophysics & Reservoir (GGR), CGG brings value across all aspects of natural resource exploration and exploitation. CGG employs over 7,000 people around the world, all with a Passion for Geoscience and working together to deliver the best solutions to its customers. CGG is listed on the Euronext Paris SA (ISIN: 0000120164) and the New York Stock Exchange (in the form of American Depositary Shares. NYSE: CGG).

Group Communications Christophe Barnini Tel: +33 1 64 47 38 11 E-mail: invrelparis@cgg.com Investor Relations Catherine Leveau Tel: +33 1 64 47 34 89 E-mail: invrelparis@cgg.com