Flagship Ventures Fund 2007, L.P.

• 10% owner at TETRAPHASE PHARMACEUTICALS INC · on record since Mar 27, 2013
• 10% owner at Receptos, Inc. · on record since May 14, 2013
• 10% owner at AGIOS PHARMACEUTICALS, INC. · on record since Jul 31, 2013
• 10% owner at Eleven Biotherapeutics, Inc. · on record since Feb 13, 2014
• 10% owner at Seres Therapeutics, Inc. · on record since Jun 29, 2015
• 10% owner at BG Medicine, Inc. · on record since Jul 16, 2015
• 10% owner at Cartesian Therapeutics, Inc. · on record since Jun 29, 2016
• Director at Cartesian Therapeutics, Inc. · on record since Jun 21, 2016
• 10% owner at Kaleido Biosciences, Inc. · on record since Feb 27, 2019
• 10% owner at Axcella Health Inc. · on record since May 15, 2019
• 10% owner at TransMedics Group, Inc. · on record since May 6, 2019