CGG — AGM Information 2014

May 14, 2014

CGG

Société Anonyme with a share capital of € 70,756,346 Registered office: Tour Maine Montparnasse, 33 avenue du Maine, 75015 Paris Paris Trade and Company Register No.: 969 202 241

INFORMATION RELATING TO CGG ANNUAL ORDINARY GENERAL MEETING OF JUNE 4, 2014

PARIS, France – May 14, 2014

CGG (ISIN: 0000120164 – NYSE: CGG) The Annual Ordinary General Meeting of CGG will be held on June 4, 2014 at Centre Eurosites George V, 28 avenue George V, 75008 Paris at 9:30 am.

Notices for the Annual Ordinary General Meeting are published in the Bulletin des Annonces Légales Obligatoires. The preliminary notice of meeting was published on April 28, 2014, (Bulletin n°51) and the notice of meeting will be published on May 16, 2014.

Holders of bearer shares can also obtain the documents related to the meeting from their financial intermediary.

Holders of registered shares will be directly invited to attend the meeting by BNP Paribas Securities Services.

All the documents and information relating to the meeting are available on the Company's website (www.cgg.com) and will be made available to the shareholders under the conditions provided by law.

CGG Contact : General Secretary Tour Maine Montparnasse, 33 avenue du Maine - 75 015 Paris