On February 24, 2020, Water Island Capital, LLC issued an open letter to Pattern Energy Group, Inc. in response to the February 19, 2020, press release issued by Pattern Energy’s Board of Directors, and stated that the letter had a series of false and misleading claims about the merger with the Canadian Pension Plan Investment Board (the 'CPPIB Merger') and the process undertaken by the Pattern Energy Board in connection with the transaction. Further, Water Island urged shareholders to preserve ability to receive full and fair value for investment in Pattern Energy by voting against the CPPIB Merger at the upcoming Special Meeting.