Lockton announced expanded leadership roles for Mike Hammond, Glenn Spencer, and Neil Nimmo. The three executives will work closely together on Lockton’s continuing global expansion.

Glenn Spencer has been named chief operating officer of Lockton, Inc. and president of Lockton Companies in the U.S., and is based in Lockton’s Kansas City office. Previously, Spencer served as U.S. chief operating officer for Lockton. A 10-year Lockton associate, he held the position of chief operating officer of Lockton’s U.S. business since 2010, guiding the growth of the business from 2,300 associates to more than 3,500, as revenue increased from $564 million to $925 million. He previously held executive roles at insurance brokers Palmer & Cay, Marsh, and Johnson & Higgins, in addition to risk manager at AOL.

Neil Nimmo will transition to CEO of both Lockton Companies LLP, in the U.K., and Lockton International Holdings Ltd, succeeding Mike Hammond on May 1, 2016. Currently deputy CEO for Lockton’s international operations, Nimmo joined Lockton in 2007 and has been a leader in the growth and development of Lockton’s U.K. and international operations during the past decade. He has been a key leader in Lockton’s largest U.K. business, Risk Solutions, for the past eight years and has served as a founding partner on the Board of Lockton Companies LLP. He has more than 30 years of experience advising clients and structuring complex insurance programs, particularly in the Professions and Management Liability fields. Prior to joining Lockton, he was a managing director at Marsh and worked at Johnson & Higgins in London. Nimmo will continue to be based in Lockton’s London operation.