W. R. Berkley Corporation has appointed John Termini as president of Berkley Specialty Excess. The newly-formed division will offer excess liability coverages in specialised markets, with an initial focus on the environmental and energy industries. Termini has more than 25 years’ experience in property and casualty insurance, with a focus on the environmental and energy sector. He joins Berkley from Hamilton, a specialty reinsurer, where he served as head of the environmental and energy division. Prior to that, he held a variety of executive and leadership roles at Markel Corporation, Aspen and Aon.