Mrs. Isabelle Kocher is a graduate of the École Normale Supérieure (ENS-Ulm), ingénieur du Corps des Mines and holds an aggregation in Physics. From 1997 to 1999, she was in charge of budget of Telecommunication and Defense at the French Ministry of Economy. From 1999 to 2002, she was Advisor on Industrial Affairs of the French Prime Minister Office (Lionel Jospin). In 2002, she joined the Suez group. She then held various positions: from 2002 to 2005, at Strategy & Development; from 2005 to 2007, director of Performance and Organisation; from 2007 to 2008, Deputy Chief Executive Officer of Lyonnaise des Eaux. From 2009 to September 2011, Mrs. Isabelle Kocher was Chief Executive Officer of Lyonnaise des Eaux, in charge of the development of activities in Europe. From October 2011 to November 2014, Mrs. Isabelle Kocher was Executive Vice-President, Chief Financial Officer of GDF SUEZ. From November 2014 to April 2016, Mrs. Isabelle Kocher was director, Deputy Chief Executive Officer and Chief Operating Officer of GDF SUEZ, which became ENGIE on April 2015. Since May 3, 2016, Mrs. Isabelle Kocher has been Chief Executive Officer of ENGIE.