Sage Therapeutics, Inc. (NASDAQ:SAGE) Files An 8-K Regulation FD Disclosure
Item 7.01. Regulation FD Disclosure.

On February7, 2018, Sage Therapeutics, Inc. (the “Company”) filed a preliminary prospectus supplement to its prospectus dated January5, 2016 in connection with its proposed public offering (the “Offering”) of $575.0million of its common stock to its effective shelf registration statement on Form S-3ASR (File No.333-208870). As part of this filing, the Company updated its cash guidance, stating that based upon its current operating plan, the Company anticipates that the net proceeds of the Offering, together with its existing capital resources and estimated brexanolone IV product sales, if the product is approved, will enable the Company to fund its operating expenses and capital expenditure requirements into 2020. The Company also provided an update on its recent increase in the number of patients in its blinded, placebo-controlled Phase 2 clinical trial of SAGE-217 in postpartum depression, and indicated that it now expects to report top-line results from this trial in the fourth quarter of 2018.

The information in this Item 7.01 is intended to be furnished and shall not be deemed “filed” for purposes of Section18 of the Securities Exchange Act of 1934 (the “Exchange Act”) or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933 or the Exchange Act, except as expressly set forth by specific reference in such filing.

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About Sage Therapeutics, Inc. (NASDAQ:SAGE)

SAGE Therapeutics, Inc. is a clinical-stage biopharmaceutical company. The Company is engaged in developing and commercializing medicines to treat central nervous system (CNS) disorders. Its lead product candidate, SAGE-547 is an intravenous formulation of allopregnanolone, a neurosteroid that acts as a synaptic and extrasynaptic modulator of the GABAA receptor. Its product candidates, SAGE-217 and SAGE-689, also targets the GABAA receptor system. The Company is focused on developing drugs based on selective allosteric modulation of CNS synaptic and extrasynaptic receptors. The Company’s chemistry platform is focused on chemical scaffolds of endogenous or chemically modified synthetic neuroactive steroid compounds that are allosteric modulators of GABAA or N-Methyl-D-aspartic acid or N-Methyl-D-aspartate (NMDA) receptors. Its SAGE-718 is a product candidate selected for development from its NMDA receptor program.