X0306 4 2017-08-02 0 0001689813 Biohaven Pharmaceutical Holding Co Ltd. BHVN 0001226675 GREGORY JULIA P C/O BIOHAVEN PHARMACEUTICALS, INC. 234 CHURCH STREET NEW HAVEN CT 06510 1 0 0 0 Stock Option (right to buy) 23.63 2017-08-02 4 A 0 36000 0.00 A 2027-08-01 Common Shares 36000 36000 D This option grant was made pursuant to the issuer's non-employee director compensation policy. The common shares underlying this option vest in three equal installments on August 2, 2018, 2019 and 2020, subject to the reporting person's continuous service with the issuer at each vesting date. /s/ Darren K. DeStefano, Attorney-in-fact 2017-08-04