The Hanover Insurance Group, Inc. announced it has appointed Stephanie E. Seibold to president of alternative markets and Arthur J. Barrett to president of programs. In this new role, Seibold will lead The Hanover's specialty property and casualty programs, specialty general liability and specialty brokerage businesses. Barrett will report to Seibold and oversee the company's specialty property and casualty programs business. Seibold joined The Hanover in 2007 as a middle market underwriter and has taken on a number of critical roles during her tenure with the company, most recently serving as the chief underwriting officer of specialty property and casualty.

Prior to that, Seibold held various leadership roles within sales and underwriting at The Hanover. Barrett came to The Hanover in 2021 and has served as the company's vice president of underwriting for its programs business. Previously, Barrett held various leadership roles at Chubb within the company's programs and brokerage division, as well as at CNA.

Seibold is a graduate of the University of Massachusetts Amherst with a bachelor's degree in English and women's studies and holds designations as an Associate in Commercial Underwriting (AU) and Construction Risk and Insurance Specialist (CRIS). Barrett earned a bachelor's degree in business marketing and management from Penn State University and holds a Master of Business Administration degree from Holy Family University. Barrett also holds designations as a Commercial Lines Coverage Specialist (CLCS) and a Construction Risk and Insurance Specialist (CRIS).