Société Anonyme with a share capital of €7,113,935 Registered office: 27 avenue Carnot, 91300 Massy No.: 969 202 241 – RCS Evry

Paris, France | Mar 5, 2021

Information Related to the Availability of the Universal Registration Document for 2020

CGG announces today its Universal Registration Document for the 2020 financial year was registered with the French Market Authorities (AMF) on March 5, 2021 and is available to the public under current regulatory conditions. It also may be consulted on the www.cgg.com website under the section “Investors / Regulated Information” and “Investors / Financial Information”.

The following information is included in the 2020 Universal Registration Document:

• the report on corporate governance mentioned under article L.225-37 of the French Commercial Code (as part of the management report);
• the auditors’ reports on the financial statements and the information related to their fees;
• the description of the share buyback program; and
• 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 2020 are also included in this document.