On May 24, 2021, Joshua Rosen provided notice of his resignation as a member of the board of directors of 4Front Ventures Corp., and the Board accepted Mr. Rosen’s resignation effective as of the same date. Mr. Rosen served as the chairman of the Board. In order to fill the vacancy as Board chairman created by Mr. Rosen’s resignation, also on May 24, 2021, the Board appointed current Board member Kathi Lentzsch as chairperson of the Board.