Graña y Montero S.A.A. announced the resignation of Mr. Augusto Baertl Montori as board member of Gra a y Montero S.A.A. and consequently as Chairman of the Board. Ernesto Balarezo Valdez, who acted as Vice-President of the Board will assume as Chairman of the Board, and Christian Laub Benavides will step in as Vice-President.