On February 11, 2020, the Board of Directors (the Board") of Yield10 Bioscience, Inc. (the Company") appointed Sherri M. Brown, Ph.D., effective immediately, as a member of the Board, to serve as a Class I Director with a term expiring at the Company's 2022 annual meeting of stockholders. In connection with her appointment, Dr. Brown was appointed to serve as chair of a newly formed Technology Committee of the Board. Dr. Brown has been Managing Director at the Yield Lab since 2017. On February 11, 2020, Peter Kellogg resigned from the Board effective immediately. His resignation was not the result of any disagreement with the Company relating to the Company's policies or practices. Effective February 11, 2020, Anthony Sinskey was appointed to serve as a member of the Audit Committee of the Board.