Dermot O’Donohoe has been appointed group CEO of the Torus Group, the specialty insurer said. O’Donohoe succeeds Clive Tobin, who is retiring and stepping down as an officer and director following four years of leadership.

The company said O’Donohoe will retain his position as chief executive of Torus International in addition to assuming the group CEO title.

Torus Group Holdings also announced today it is being acquired by Bermuda-based Enstar.

O’Donohoe has 25 years of insurance experience across international and American markets. He was appointed chief executive of Torus International in 2011, having joined Torus in 2009 as chief underwriting officer, Global Specialty, and chief operating officer of Torus in the UK and Europe. Prior to Torus he was most recently chief underwriting officer of XL Insurance’s Global Specialty Operations and CEO of its London market operations. He is also a former member of the Council of Lloyd’s.

Tobin was appointed chief executive of Torus in January 2009 and has been responsible for the group’s activities worldwide. His insurance career spans 30 years in the world’s largest insurance markets including Bermuda, New York, Zurich and London.

Torus Insurance Holdings Limited is a global specialty insurer and the holding company of six wholly owned insurance vehicles in Bermuda, the U.S. and Europe, including one Lloyd’s syndicate, Syndicate 1301.