Rigel Pharmaceuticals, Inc. (RIGL) Under Investigation for Investors over Potential Wrongdoing by Certain Directors

San Diego, CA -- (SBWIRE) -- 10/24/2016 -- Certain directors of Rigel Pharmaceuticals are under investigation over potential wrongdoing. The investigation was announced on behalf of current long-term investors in NASDAQ:RIGL shares concnering potential breaches of fiduciary duties by certain directors at Rigel Pharmaceuticals.