IBB iShares Biotechnology ETF

GW Pharmaceuticals plc (Nasdaq:GWPH) (AIM:GWP) (GW, the Company or the Group), a biopharmaceutical company focused on discovering, developing and commercializing novel therapeutics from its proprietary cannabinoid product platform, today announced that it has been selected for addition to the NASDAQ Biotechnology Index® (Nasdaq:NBI), which will become effective at the open of U.S. markets today.

The NASDAQ Biotechnology Index is designed to track the performance of a set of NASDAQ listed securities that are classified as either biotechnology or pharmaceutical according to the Industry Classification Benchmark (ICB). The NASDAQ Biotechnology Index is re-ranked semi-annually in May and November. The NASDAQ Biotechnology Index is the basis for the iShares Nasdaq Biotechnology Index(SM) Fund (Nasdaq:IBB), which seeks investment results that correspond generally to the price and yield performance, before fees and expenses, of the NASDAQ Biotechnology Index. In addition, options based on the NASDAQ Biotechnology Index and the iShares NASDAQ Biotechnology Index Fund trade on various exchanges. For more information about the NASDAQ Biotechnology Index, including eligibility criteria, visit www.nasdaq.com.

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 commercialized the world's first plant-derived cannabinoid prescription drug, Sativex®, which is approved for the treatment of spasticity due to multiple sclerosis in 27 countries outside the United States. Sativex is also in Phase 3 clinical development as a potential treatment of pain associated with advanced cancer. This Phase 3 program is intended to support the submission of a New Drug Application for Sativex in cancer pain with the U.S. Food and Drug Administration and in other markets around the world. GW is also advancing an orphan drug program in the field of childhood epilepsy with a focus on Epidiolex®, which is in Phase 2/3 clinical development for the treatment of Dravet syndrome and which is also expected to enter Phase 3 clinical trials in the treatment of Lennox-Gastaut syndrome.GW has a deep pipeline of additional cannabinoid product candidates which includes compounds in Phase 1 and 2 clinical development for glioma, ulcerative colitis, type 2 diabetes, and schizophrenia. For further information, please visit www.gwpharm.com.

Forward-looking statements

This news release contains forward-looking statements that reflect GW's current expectations regarding future events, including statements regarding financial performance, the timing of clinical trials, the relevance of GW products commercially available and in development, the clinical benefits of Sativex® and Epidiolex® and the safety profile and commercial potential of Sativex and Epidiolex. Forward-looking statements involve risks and uncertainties. Actual events could differ materially from those projected herein and depend on a number of factors, including (inter alia), the success of GW's research strategies, the applicability of the discoveries made therein, the successful and timely completion of uncertainties related to the regulatory process, and the acceptance of Sativex, Epidiolex and other products by consumer and medical professionals. A further list and description of risks and uncertainties associated with an investment in GW can be found in GW's filings with the U.S. Securities and Exchange Commission. Existing and prospective investors are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date hereof. GW undertakes no obligation to update or revise the information contained in this press release, whether as a result of new information, future events or circumstances or otherwise.

Enquiries:
GW Pharmaceuticals plc	(Today) +44 20 3727 1000
Justin Gover, Chief Executive Officer	(Thereafter) + 44 1980 557000
Stephen Schultz, VP Investor Relations (U.S.)	917 280 2424 / 401 500 6570
FTI Consulting (Media Enquiries)
Ben Atwell / Simon Conway / John Dineen (UK)	+ 44 20 3727 1000
Robert Stanislaro (U.S.)	212 850 5657
Trout Group, LLC (U.S. investor relations)
Todd James / Chad Rubin	646 378 2900