COWEN COLLABORATIVE INSIGHTS February 25, 2019 ADDENDUM 4 =% Stocks Mentioned In Important Disclosures Ticker Company Name WEED Canopy Growth Corporation GWPH GW Pharmaceuticals Plc TLRY Tilray TPB Turning Point Brands Important Disclosures and Information Relating to Cowen Washington Research Group Cowen Washington Research Group produces commentaries on political, economic or market conditions. Commentaries produced by Cowen Washington Research Group are not intended as research reports as defined in FINRA Rule 2241 Research Analysts and Research Reports or FINRA Rule 2242 Debt Research Analysts and Debt Research Reports. Sections of this report noted as authored by Cowen Washington Research Group have not been prepared, are not intended, and should not be interpreted as a research report or investment recommendation regarding securities of any company. Investors should not consider purchasing or selling securities based upon any information contained in sections of the report denoted as authored by Cowen Washington Research Group. Cowen Research Analyst Certification Each author of this research report hereby certifies that (i) the views expressed in the research report accurately reflect his or her personal views about any and all of the subject securities or issuers, and (ii) no part of his or her compensation was, is, or will be related, directly or indirectly, to the specific recommendations or views expressed in this report. Important Disclosures Relating to Cowen Research Cowen and Company, LLC and or its affiliates make a market in the stock of GW Pharmaceuticals Plc, Tilray, Turning Point Brands and Canopy Growth Corporation securities. Cowen and Company, LLC served as the placement agent in connection with Tilray's Series A preferred stock financing in February and March 2018. Cowen and Company, LLC managed or co-managed a public offering of GW Pharmaceuticals Plc, Tilray, Turning Point Brands and Canopy Growth Corporation in the past 12 mon