Shares of Aclaris Therapeutics, Inc. (ACRS) were up 25.4% on Jan 16 after the company announced the appointment of Neal Walker as the new interim chief executive officer (CEO). Walker will replace Douglas Manion, who stepped down from his role with immediate effect. He also served as the president of the company and was a member of the board of directors. Walker is currently serving as the chairman of the company and is also a co-founder. He held the role of Aclaris' CEO until 2022. Along with the leadershi ...