13G Filing: Visium Asset Management and Sage Therapeutics, Inc. (SAGE)

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13G

Under the Securities Exchange Act of 1934

Sage
Therapeutics, Inc.

(Name of Issuer)

Common Stock, $0.0001 par value per share

(Title of Class of Securities)

78667J108

(CUSIP Number)

February 1, 2016

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to
designate the rule pursuant to which this Schedule is filed:

x Rule 13d-1(b)**

x Rule 13d-1(c)**

¨ Rule 13d-1(d)

*	The remainder of this cover page shall be filled out for a reporting persons initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

**	This Schedule is being filed pursuant to Rule 13d-1(b) with respect to Visium Asset Management, LP, JG Asset, LLC and Jacob Gottlieb, and pursuant to Rule 13d-1(c) with respect to certain advisory clients of Visium Asset Management, LP.

The information required on the remainder of this cover page shall not be deemed to be filed for the
purpose of Section 18 of the Securities Exchange Act of 1934 (Act) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).