ALBANY -- Alan Chartock is retiring after more than four decades at WAMC/Northeast Public Radio. The WAMC’s Board of Trustees announced its president and CEO was stepping down Thursday. “As I reflect on over 40 years of service to the creation and development of WAMC, I feel it is time for me to turn things over,” Chartock, 81, said in a statement. “This has been the journey of a lifetime and I have loved every minute, every challenge and every opportunity for growth this work has afforded me. But it’s time to let a new crop of leaders take the helm…