Official Notice by the NYSE

Paris, France | Mar 3, 2016

On March 2, 2016, CGG received notice from the New York Stock Exchange, Inc. (NYSE) that it is no longer in compliance with the NYSE’s continued listing standards because the average per share closing price of CGG’s American Depositary Shares (ADS) for the consecutive 30 trading–day period ending on March 1, 2016 was below the NYSE’s price requirement of $1.00 per security.

The company intends to notify the NYSE of its intention to cure the deficiency within the prescribed time frame of six months from receipt of the NYSE notice on March 2, 2016. The company’s ADSs will continue to be listed and traded on the NYSE, subject to compliance with the other NYSE continued listing standards and oversight by the NYSE. The NYSE notification does not affect the company’s business operations or its legal and regulatory reporting requirements.