Diane P. Mika Named Chief Risk Management Officer of Berkley Alliance Managers

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GLASTONBURY, Conn. (April 2, 2026) — Berkley Alliance Managers, a Berkley company specializing in professional liability insurance solutions for design, construction and service professionals has announced the appointment of Diane P. Mika as chief risk management officer.

Mika previously served as senior vice president, risk management officer and department head for Berkley Alliance Managers. She brings more than 30 years of professional liability insurance experience and a distinguished record in risk management and loss prevention education. In her new role, she will lead the client-facing risk management function for Berkley Construction Professional, Berkley Design Professional and Berkley Service Professionals, advancing the organization’s commitment to delivering industry-leading resources and solutions.

“Diane’s deep expertise in professional liability risk management, paired with her leadership in developing innovative learning and loss prevention programs, makes her uniquely qualified to lead the risk management services we provide to clients,” said Stephen L. Porcelli, president of Berkley Alliance Managers. “Her vision, industry insight and commitment to elevating client education will continue to strengthen the value we deliver to construction, design and service professionals.”

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Jude Sedliak Named Chief Underwriting Officer of Berkley Design Professional

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MONTEREY, Calif., October 6, 2025 – Berkley Design Professional, a division of Berkley Alliance Managers, a Berkley Company, specializing in professional liability insurance products and services for architects and engineers, has announced Jude Sedliak as chief underwriting officer.

“Jude’s extensive professional liability underwriting experience, including 20 years in an A&E professional liability role, positions him perfectly to lead our underwriting team and aligns with our commitment to providing innovative solutions for clients in the design professional industry,” said Tom Rea, executive vice president of Berkley Design Professional.

Jude joined Berkley Service Professionals, a division of Berkley Alliance Managers, in 2021 as vice president, underwriting. He was promoted to senior vice president in 2023. He has nearly 30 years of experience underwriting professional liability insurance. Jude’s expertise includes over a dozen E&O classes, with 20 years specifically in A&E professional liability. He previously served as vice president at two leading E&S insurance carriers and at a managing general agency. Jude has achieved the designation of Registered Professional Liability Underwriter (RPLU).

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Tom Rea Named Executive Vice President of Berkley Design Professional

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Monterey, Calif., July 17, 2025 – Berkley Design Professional, a division of Berkley Alliance Managers, a Berkley Company, specializing in professional liability insurance products and services for architects and engineers, has announced Tom Rea as the new executive president.

With nearly 30 years of experience in professional liability underwriting and a strong background in portfolio management, Tom has a proven track record of successfully launching numerous new products and expanding business portfolios for Berkley Alliance Managers and other insurance providers.

“Tom’s extensive experience in professional liability underwriting, his exceptional leadership skills, and his creative approach to business will position Berkley Design Professional for growth in the A&E Professional Liability Insurance market,” said Stephen L. Porcelli, president of Berkley Alliance Managers. “We are truly fortunate to have Tom’s leadership, and we are confident he will best serve the interests of our brokers and policyholders.”

Tom joined Berkley Alliance Managers in 2020 to lead Berkley Service Professionals, the company’s miscellaneous professional liability business unit, and he will continue in this role as well. Before joining Berkley, he held various positions in professional liability, including senior vice president, product head, product and portfolio manager, and senior underwriter. He has experience working in both large and small insurance companies, as well as with Managing General Agents that specialize in both admitted and non-admitted professional liability insurance.

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