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Such performance criteria were met on September 24, 2018, resulting in the vesting of the option."}],"balance_after":70000,"derivative":{"exercise_price":4.63,"exercise_date":"2018-09-24","expiration_date":"2027-10-09","underlying":"Common Stock","underlying_shares":70000},"source":{"system":"sec-edgar","filing":"0000904454-18-000628","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1719331/000090445418000628/edgar.xml","form_type":"4"}},{"id":3801680,"issuer":{"id":5242,"kind":"organization","name":"Verastem, Inc.","symbol":"VSTM"},"owners":[{"id":163276,"kind":"person","name":"Le NgocDiep T. MD, PhD","position":1,"cik":"0001719331","reported_name":"Le NgocDiep T. 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The option vests based on the Issuer's satisfaction of certain performance milestones by June 30, 2018, by March 31, 2019, and within the first twenty-four (24) months after the achievement of certain net sales targets. 20% of the performance criteria was met on April 6, 2018, resulting in vesting of the option as to 2,500 shares. 40% of the performance criteria was met on September 24, 2018, resulting in vesting of the option as to 5,000 shares."}],"balance_after":5000,"derivative":{"exercise_price":2.97,"exercise_date":"2018-09-24","expiration_date":"2028-01-05","underlying":"Common Stock","underlying_shares":5000},"source":{"system":"sec-edgar","filing":"0000904454-18-000628","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1719331/000090445418000628/edgar.xml","form_type":"4"}},{"id":3908585,"issuer":{"id":5242,"kind":"organization","name":"Verastem, Inc.","symbol":"VSTM"},"owners":[{"id":163276,"kind":"person","name":"Le NgocDiep T. 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The option vests based on the Issuer's satisfaction of certain performance milestones by June 30, 2018, by March 31, 2019, and within the first twenty-four (24) months after the achievement of certain net sales targets. 20% of the performance criteria was met on April 6, 2018, resulting in vesting of the option as to 2,500 shares."}],"balance_after":2500,"derivative":{"exercise_price":2.97,"exercise_date":"2018-04-06","expiration_date":"2028-01-05","underlying":"Common Stock","underlying_shares":2500},"source":{"system":"sec-edgar","filing":"0001104659-18-038056","document":"a4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1719331/000110465918038056/a4.xml","form_type":"4"}},{"id":4103158,"issuer":{"id":5242,"kind":"organization","name":"Verastem, Inc.","symbol":"VSTM"},"owners":[{"id":163276,"kind":"person","name":"Le NgocDiep T. 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