Hamilton Insurance Group Ltd. announced that CEO of its Lloyd's of London unit, Dermot O'Donohoe, is leaving his position.

Also, the company appointed Peter Barrett, former chairman of insurance broker Bell & Clements, to the newly created role of global head of specialty insurance. He will be based in London.

Christi Garber, former tax director of the Americas at Validus Holdings Ltd., was hired to the newly created position of senior vice president of tax. She will be based in New York.