Michael Bonney

Michael W. Bonney is currently the Executive Chair of the Board of Kaleido Biosciences, Inc., having served as Chief Executive Officer and Chairman from June 2017 to August 2018. From January to July 2016, he was a Partner of Third Rock Ventures, LLC. Previously, Mr. Bonney served as Chief Executive Officer and a member of the Board of Directors of Cubist Pharmaceuticals Inc. (which was acquired by Merck & Co., Inc. in January 2015) from June 2003 until December 2014. Prior to Cubist, he was Vice President, Sales and Marketing at Biogen, Inc. Prior to joining Biogen, Mr. Bonney spent eleven years at Zeneca Pharmaceuticals, in a range of commercial, operating and strategic roles, ending his career there as National Business Director. He chairs the Board of Directors of Alnylam Pharmaceuticals, Inc. and Magenta Therapeutics. Mr. Bonney also currently serves as a member of the Board of Directors of Sarepta Therapeutics Inc. and Syros Pharmaceuticals. He previously served as a member of the Board of Directors of Global Blood Therapeutics, Inc. and NPS Pharmaceuticals, Inc. Mr. Bonney currently serves on the Celgene Board of Directors, where he is a member of the Executive Committee as well as the Nominating, Governance and Compliance Committees. He received a B.A. in Economics from Bates College and chaired its Board of Trustees from 2012 to June 2019. Mr. Bonney has committed to complying with the company’s policy that directors should not serve on more than four public company boards by the end of the first quarter of 2020.