GWPH is NASDAQ listed. There is a registration statement in April 2013 (not an uplisting though) and a secondary offering in Dec, 2013 but I don't believe they uplisted because they got into the MMJ business.
Else MDBX is pinko as well as MJNA, two of the better known MMJ stocks. MJNA has an unsolicited quotes only warning from OTCMarkets vis a vis nobody is making a market in their stock. Neato on that.