THE WOODLANDS, Texas--(BUSINESS WIRE)--Sept. 5, 2006--Repros Therapeutics Inc. (Nasdaq:RPRX) (PCX:RPRX) announced today that it has filed a Form S-3 shelf registration statement with the Securities and Exchange Commission for up to 5,000,000 shares of common stock. This shelf registration statement is not yet effective, but if it is declared effective it will remain so for three years. The shares of common stock under this registration statement may not be sold nor may offers to buy be accepted prior to the time that the registration statement becomes effective.