UNION CITY, Calif., Sept. 4, 2008 (GLOBE NEWSWIRE) -- Questcor Pharmaceuticals, Inc. (Nasdaq:QCOR) today announced that it has concluded a privately negotiated agreement to repurchase 1,800,000 shares of its common stock at a purchase price of $5.06 per share for a total purchase price of $9,108,000 from Inverlochy Consultadoria & Servicos L.D.A. This repurchase is a privately negotiated transaction and not part of Questcor's previously announced share repurchase program. The Company has 3.5 million shares of remaining share repurchase authority under this program.