Alan Maguire is to retire as president and CEO of New Jersey-based energy mutual Aegis after 20 years in the post. He will step down on October 27th. Maguire will be succeeded by Owen Ryan, who was most recently CEO of Deloitte Advisory. Ryan has been at Deloitte for 30 years. For the past five years he has been a strategic adviser to Aegis, Aegis London and their respective boards of directors.