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(\"Parent\") and Beacon Merger Sub, Inc., an indirect wholly owned subsidiary of Parent (\"Purchaser\"), Purchaser completed a tender offer for shares of the Issuer's Common Stock. 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The PSU vests upon the achievement of certain milestones, one of which was met on July 25, 2019, resulting in the vesting of the PSU as to 2,450 shares."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Reflects beneficial ownership balance which includes 279 ESPP shares purchased on June 30, 2019."}],"balance_after":3190,"source":{"system":"sec-edgar","filing":"0001562180-19-004093","document":"primarydocument.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1597553/000156218019004093/primarydocument.xml","form_type":"4"}},{"id":3511426,"issuer":{"id":77038,"kind":"organization","name":"Sage Therapeutics, Inc.","symbol":"SAGE"},"owners":[{"id":70062,"kind":"person","name":"Cloonan Michael","position":1,"cik":"0001704336","reported_name":"Cloonan Michael","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Business Officer"}}],"security":"Stock Option (Right to Buy)","published_at":"2019-05-24T16:00:34.000Z","date":"2019-05-22","kind":"exercise","acquired":false,"shares":25000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The securities awarded on 5/01/2017 were in the form of stock options issued pursuant to the Sage Therapeutics, Inc. 2016 Inducement Equity Plan. Options to purchase 46,250 shares of common stock vested on April 24, 2018 with 138,750 shares vesting in 36 equal monthly installments thereafter."}],"balance_after":160000,"derivative":{"exercise_price":73.43,"expiration_date":"2027-05-01","underlying":"Common Stock","underlying_shares":25000},"source":{"system":"sec-edgar","filing":"0001562180-19-003095","document":"primarydocument.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1597553/000156218019003095/primarydocument.xml","form_type":"4"}},{"id":3511425,"issuer":{"id":77038,"kind":"organization","name":"Sage Therapeutics, Inc.","symbol":"SAGE"},"owners":[{"id":70062,"kind":"person","name":"Cloonan Michael","position":1,"cik":"0001704336","reported_name":"Cloonan Michael","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Business Officer"}}],"security":"Common Stock","published_at":"2019-05-24T16:00:34.000Z","date":"2019-05-22","kind":"sale","acquired":false,"shares":25000,"price":175,"value":4375000.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"The sales reported on this Form 4 were effected pursuant to a trading plan adopted pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"The 461 shares reported as beneficially owned were acquired by the reporting person pursuant to the issuer's employee stock purchase plan."}],"balance_after":461,"source":{"system":"sec-edgar","filing":"0001562180-19-003095","document":"primarydocument.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1597553/000156218019003095/primarydocument.xml","form_type":"4"}},{"id":3511424,"issuer":{"id":77038,"kind":"organization","name":"Sage Therapeutics, Inc.","symbol":"SAGE"},"owners":[{"id":70062,"kind":"person","name":"Cloonan Michael","position":1,"cik":"0001704336","reported_name":"Cloonan Michael","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Business Officer"}}],"security":"Common Stock","published_at":"2019-05-24T16:00:34.000Z","date":"2019-05-22","kind":"exercise","acquired":true,"shares":25000,"price":73.43,"value":1835750.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"The 461 shares reported as beneficially owned were acquired by the reporting person pursuant to the issuer's employee stock purchase plan."}],"balance_after":25461,"source":{"system":"sec-edgar","filing":"0001562180-19-003095","document":"primarydocument.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1597553/000156218019003095/primarydocument.xml","form_type":"4"}},{"id":3653122,"issuer":{"id":77038,"kind":"organization","name":"Sage Therapeutics, Inc.","symbol":"SAGE"},"owners":[{"id":70062,"kind":"person","name":"Cloonan Michael","position":1,"cik":"0001704336","reported_name":"Cloonan Michael","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Business Officer"}}],"security":"Stock Option (Right to Buy)","published_at":"2019-02-15T16:31:12.000Z","date":"2019-02-13","kind":"grant","acquired":true,"shares":24500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The securities awarded on February 13, 2019 were in the form of stock options issued pursuant to the Sage Therapeutics, Inc. 2014 Stock Option and Incentive Plan. 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Options to purchase 4,500 shares of common stock shall vest on the one year anniversary of the 2/1/2018 Vesting Start Date with 13,500 shares vesting in 36 equal monthly installments thereafter.  Options to purchase 18,000 shares of common stock shall vest periodically upon the Company achieving certain milestones."}],"balance_after":36000,"derivative":{"exercise_price":145.77,"expiration_date":"2028-04-02","underlying":"Common Stock","underlying_shares":36000},"source":{"system":"sec-edgar","filing":"0001562180-18-001843","document":"primarydocument.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1597553/000156218018001843/primarydocument.xml","form_type":"4"}},{"id":4332949,"issuer":{"id":77038,"kind":"organization","name":"Sage Therapeutics, Inc.","symbol":"SAGE"},"owners":[{"id":70062,"kind":"person","name":"Cloonan Michael","position":1,"cik":"0001704336","reported_name":"Cloonan Michael","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Business Officer"}}],"security":"Stock Option (Right to Buy)","published_at":"2017-05-04T11:36:25.000Z","date":"2017-05-01","kind":"grant","acquired":true,"shares":185000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The securities awarded on 5/01/2017 were in the form of stock options issued pursuant to the Sage Therapeutics, Inc. 2016 Inducement Equity Plan. 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