MISSISSAUGA, ON, April 26 /PRNewswire-FirstCall/ - YM BioSciences Inc. (NYSE Amex:YMI, TSX:YM), announced today that it has filed a prospectus supplement to its final base shelf prospectus, dated September 16, 2009, with the Ontario Securities Commission, and a supplement to its U.S. prospectus, dated September 16, 2009, forming part of its U.S. registration statement, with the United States Securities and Exchange Commission.
