Western World Insurance Group announced Monday that Thomas F. Mulligan, President and Chief Executive Officer, is retiring effective Jan. 1, 2015, ending a 33-year span of continuous service.

On Oct. 2, 2014, Western World was acquired by Validus Holdings, Ltd., a global provider of reinsurance and insurance focused on short-tail specialty classes of business.

While Mulligan will continue to participate on the Western World board of directors, Robert J. Livingston, who is currently the chief operating officer and chief financial officer will assume the role of president and chief executive officer.

Livingston has been with Western World for 37 years. He first became an officer of Western World Insurance Group in 1980 when he was elected Assistant Treasurer, and has held positions of increasing responsibility before being elected to his current position in 2010. He is an active participant in the Property Casualty Insurers Association of America (PCI), and serves on two committees: the Finance Issues committee, and the Reinsurance subcommittee.

In a media statement, Mulligan thanked Western World’s employees and business partners for their loyalty and dedication during his tenure, and noted Livingston’s high profile in the industry.

Livingston said he looks forward to leading Western World with the support of Validus as the acquired company expands its platform, products and services.

Source: Western World Insurance Group, Inc., Validus Holdings, Ltd.