Hong Kong-based Harbour BioMed on Sunday exercised its warrant to acquire the common stock in Spruce Biosciences Inc. (NASDAQ:SPRB) .Following this transaction, Harbour BioMed holds approximately 3.8% of the total outstanding shares of Spruce and approximately 3.1% of the fully diluted shares of Spruce.The warrant was initially issued to Harbour BioMed’s subsidiary and other minority shareholders of HBM Alpha Therapeutics (HBMAT), a biotechnology company incubated by Harbour BioMed, in connection with a lic ...