CGG

AGM Information • Dec 22, 2015

CGG

Société Anonyme with a share capital of € 70,826,076 Registered office: Tour Maine Montparnasse, 33 avenue du Maine, 75015 Paris Paris Trade and Company Register No.: 969 202 241

INFORMATION RELATING TO CGG COMBINED GENERAL MEETING OF JANUARY 11, 2016

PARIS, France – December 22, 2015

CGG (ISIN: 0000120164 – NYSE: CGG) The Combined General Meeting of CGG will be held on January 11, 2016 at the Centre d'Affaires Paris Victoire, 52 rue de la Victoire, 75009 Paris at 10:00 am.

Notices for the Combined General Meeting are published in the Bulletin des Annonces Légales Obligatoires. The preliminary notice of meeting was published on December 7, 2015 (Bulletin n°146) and the notice of meeting will be published on December 23, 2015 (Bulletin n° 153).

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