David E. Johnson has been a director since May 2023. Mr. Johnson has served as the Managing Partner of Caligan Partners LP, an SEC-registered investment adviser, since 2017. Mr. Johnson has also served as a member of the board of directors of Liquidia Corporation, a biopharmaceutical company, since 2021, and served as a member of the board of directors of AMAG Pharmaceuticals, Inc., a pharmaceutical company specializing in products treating iron deficiency anemia, from 2019 to 2020. Previously, Mr. Johnson served as Managing Director at the Carlyle Group, a global private equity, alternative asset management and financial services firm, from 2010 to 2017. Before joining Carlyle Group, he served as Vice President in the Principal Investments area at Morgan Stanley, a global financial services and investment management firm, from 2004 to 2010. Prior to joining Morgan Stanley, Mr. Johnson worked at Weiss Asset Management, an investment management firm, from September 2003 to June 2004. In the not-for-profit sector, Mr. Johnson serves as a member of the board of directors of The Children’s Scholarship Fund, Inc., a privately funded tuition assistance program, and previously served on the Executive Committee for the Harvard College Fund. Mr. Johnson holds an A.B. and S.M. in Applied Mathematics from Harvard University.