Sosei Group Corporation announced the appointment of Mr. Rolf Soderstrom as a new Board Director and the promotion of Dr. Malcolm Weir to Executive Vice Chairman. These changes, which were announced at the Company's 30th Shareholders' Meeting held in Tokyo alongside the completion of a realignment of its UK R&D organization in which a number of talented scientists were promoted, have been designed to strengthen the focus of Sosei Heptares on the execution of the next stage of the Company's growth strategy. Mr. Rolf Soderstrom is a newly appointed External Director. He brings over 30 years' experience in finance and a track record of accelerating the profitable growth of companies and delivering shareholder returns. Rolf's appointment follows the retirement of Mrs. Julia Gregory from the Sosei Group Board of Directors at Shareholders' meeting. Malcolm Weir reporting to the President and CEO.