Benitec Biopharma announces closing of U.S. Preliminary public offering of ADSs Benitec Biopharma Small , a clinical-stage biotechnology organization, is very happy to announce the closing of its U erektiohairioita.html click here .S. Preliminary public offering of just one 1,500,000 American Depositary Shares , representing 30,000,000 completely paid normal shares of Benitec, with warrants to get 500 together,000 ADSs, representing 10,000,000 completely paid ordinary shares. Each ADS represents 20 normal shares of Benitec.