Pampa Energía S.A. received the resignations presented by Mr. Diego Martin Salaverri to his positions as Director and Responsible of Market Relations and Mrs. Clarisa Lifsic to her positions as Director and member of the Audit Committee with effect from October 31, 2017. Mr. Javier Campos Malbrán to his position as Director, with effect from November 30, 2017. Mr. Damian Burgio to his position as alternate member of the Supervisory Committee, with effect from October 31, 2017.