W. R. Berkley Corporation announced the appointments of Melissa M. Emmendorfer as senior vice president – insurance risk management, Mir Mazhar as senior vice president - chief project officer, and Jonathan A. Schriber as senior vice president – underwriting. All appointments are effective immediately. Ms. Emmendorfer most recently served as vice president - insurance risk management of W. R. Berkley Corporation, having joined its reinsurance operating unit Berkley Re America as senior vice president in 2009. She has more than 25 years of experience in the property and casualty reinsurance industry and is a graduate of Fairfield University with a Bachelor of Science in mathematics. Mr. Mazhar is an experienced technology executive, senior program manager and business transformation professional with 20 years of global experience at preeminent international consulting firms. He has a strong track record of delivering business efficiencies through technology modernization for large-scale transformational initiatives. Mr. Schriber has been with W. R. Berkley Corporation for 10 years and most recently served as chief underwriting officer of the Reinsurance segment. He joined Berkley Re America in 2007 as executive vice president and chief administrative officer, was named its president in 2008, and was appointed its chairman in 2015. Mr. Schriber has more than 20 years of experience in the property and casualty reinsurance industry.