GW PHARMACEUTICALS PLC 
By London, UK, January 14, 2014: GW Pharmaceuticals plc (Nasdaq: GWPH, AIM: GWP, "GW" or the "Company"), a biopharmaceutical company focused on discovering, developing and commercializing novel therapeutics from its proprietary cannabinoid product platform, announced today the closing of its previously announced follow-on offering on the NASDAQ Global Market of 2,441,110 American Depositary Shares (ADSs) and the full exercise by the underwriters of their option to purchase 366,165 additional ADSs at a price of $36.00 per ADS raising gross proceeds of $101.1 million (before deducting underwriting discount, commissions and offering expenses).
Morgan Stanley & Co. LLC and Cowen and Company, LLC are acting as joint book-running managers for the offering. Piper Jaffray & Co. is acting as lead manager and Canaccord Genuity Inc. is acting as co-lead manager.
A registration statement relating to these securities was declared effective by the Securities and Exchange Commission on January 8, 2014. Copies of the final prospectus relating to this offering may be obtained from: Morgan Stanley & Co. LLC, Attention: Prospectus Department, 180 Varick Street, 2nd Floor, New York, New York 10014; from Cowen and Company, LLC, c/o Broadridge Financial Services, 1155 Long Island Avenue, Edgewood, NY, 11717, Attn: Prospectus Department; from Piper Jaffray & Co., Attention: Prospectus Department, 800 Nicollet Mall, J12S03, Minneapolis, MN 55402; or from Canaccord Genuity Inc., Attention: Syndicate Department, 99 High Street, 12th Floor, Boston, Massachusetts 02110.
This press release shall not constitute an offer to sell or the solicitation of an offer to buy, nor shall there be any sale of these securities in any state or other jurisdiction in which such an offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or other jurisdiction.
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 24 countries. Sativex is also in Phase 3 clinical development as a potential treatment of pain in people 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 has a deep pipeline of additional cannabinoid product candidates, including Epidiolex which has received Orphan Drug Designation from the FDA for the treatment of Dravet syndrome, a severe infantile-onset, genetic, drug-resistant epilepsy syndrome. Our product pipeline also includes compounds in Phase 1 and 2 clinical development for glioma, ulcerative colitis, type
