GW Pharmaceuticals to Report Q3 Financial Results and Host Conference Call on 7 August, 2017

LONDON, July 24, 2017 -- GW Pharmaceuticals plc (Nasdaq:GWPH), (“GW” or “the Company”), a biopharmaceutical company focused on discovering, developing and commercializing novel therapeutics from its proprietary cannabinoid product platform, will announce on 7 August, 2017 its third quarter financial results for the period ending 30 June, 2017. GW will also host a conference call the same day at 4:30 p.m. EDT. Conference call information will be provided in the financial results press release. A replay of the call will also be available through the Company's website (www.gwpharm.com) shortly after the call.

About GW Pharmaceuticals plc

Founded in 1998, GW is a biopharmaceutical company focused on discovering, developing and commercializing novel therapeutics from its proprietary cannabinoid product platform in a broad range of disease areas. GW is advancing an orphan drug program in the field of childhood epilepsy with a focus on Epidiolex^® (cannabidiol), which is in Phase 3 clinical development for the treatment of Dravet syndrome, Lennox-Gastaut syndrome, Tuberous Sclerosis Complex and Infantile Spasms. GW commercialized the world’s first plant-derived cannabinoid prescription drug, Sativex^® (nabiximols), which is approved for the treatment of spasticity due to multiple sclerosis in 30 countries outside the United States. The Company has a deep pipeline of additional cannabinoid product candidates which includes compounds in Phase 1 and 2 trials for glioma, schizophrenia and epilepsy. For further information, please visit www.gwpharm.com.

Enquiries:

GW Pharmaceuticals plc	 
Stephen Schultz, VP Investor Relations (U.S.)	917 280 2424 / 401 500 6570