Arena Pharmaceuticals, Inc. announced the appointment of Douglas J. Manion, M.D., F.R.C.P. as Executive Vice President of Research Development, reporting to Amit D. Munshi, President and CEO of Arena. Dr. Manion brings more than 20 years of pharmaceutical industry experience spanning three large companies, including work in all of Arena's therapeutic areas. Dr. Manion joins Arena after serving as CEO of Kleo Phamaceuticals, a private biotechnology company focused on innovative small molecule immunotherapeutics, from 2017 until its acquisition by Biohaven Holdings in January 2021.