X0306 4 2017-02-06 false 0001597553 Sage Therapeutics, Inc. SAGE 0001304815 IGUCHI KIMI C/O SAGE THERAPEUTICS, INC. 215 FIRST STREET CAMBRIDGE MA 02142 false true false false CFO & Treasurer Stock Option (Right to Buy) 47.70 2017-02-06 4 A false 45000.00 0.00 A 2027-02-06 Common Stock 45000.00 45000.00 D The securities awarded on 2/06/2017 were in the form of stock options issued pursuant to the Sage Therapeutics, Inc. 2014 Stock Option and Incentive Plan. Options to purchase 5,625 shares of common stock shall vest on the one year anniversary of the Vesting Start Date with 16,875 shares vesting in 36 equal monthly installments thereafter. Options to purchase 22,500 shares of common stock shall vest periodically over the next four years upon the Company achieving certain milestones. /s/ Anne Marie Cook, as Attorney-in-Fact for Kimi Iguchi 2017-02-08