Questor Technology Inc. announced that Marcel Kessler has resigned from the Board effective June 27, 2022, to accept a new position as CEO and President of GrafTech International.Kessler previously served as the president and chief executive officer of Pason Systems Inc. from 2011 to 2020, and has been a director of Pason since 2012 and is currently serving as the chairman of the board of directors of Pason.