X0206 3 2018-10-01 0 0001351288 GW PHARMACEUTICALS PLC GWPH 0001584516 Secor Alicia SOVEREIGN HOUSE, VISION PARK, HISTON CAMBRIDGE X0 CB24 9BZ UNITED KINGDOM 1 0 0 0 Stock Options 0.0013 2021-01-03 2022-03-15 Ordinary Shares 10740 D Stock Options 11.1741 2021-01-03 2028-01-03 Ordinary Shares 35340 D Granted pursuant to the Issuer's Long-Term Incentive Plan. Converted from British Pounds Sterling to U.S. Dollars using currency ratio of 1.00 British Pound Sterling = 1.302 U.S. Dollars as of September 28, 2018. The reported options are options to purchase American Depositary Shares ("ADS") of the Issuer. Each ADS represents twelve ordinary shares of the Issuer. /s/ Alicia Secor 2018-10-01