 PEMBROKE, Bermuda, Sept. 02, 2021 GLOBE NEWSWIRE -- James River Group Holdings, Ltd. James River or the Company NASDAQ: JRVR today announced that James Jim Gunson has joined the Company as Senior Vice President and Chief Claims Officer, effective September 2, 2021. He will report into Chief Executive Officer Frank DOrazio and be based out of the Companys largest office in Richmond, Virginia. 