Effective July 1, 2021, the Board of Directors of Kaleido Biosciences, Inc. appointed Jerald Korn as Chief Operating Officer of the Company, adding to Mr. Korn's ongoing role as the Company's General Counsel and Corporate Secretary. In this role, Mr. Korn will have responsibility for Legal, Program Leadership and Management, Regulatory, Quality and Information Technology. Mr. Korn joined the Company in July 2019 as Senior Vice President, General Counsel and Corporate Secretary. Prior to joining the Company, Mr. Korn served in various roles of increasing responsibility at TESARO, Inc., including Senior Vice President, Chief Legal and Administrative Officer, managing a team of more than 30 employees across legal, compliance, government affairs, corporate communications, patient advocacy and government price reporting.