UNION CITY, Calif., Aug. 13, 2008 (PRIME NEWSWIRE) -- Questcor Pharmaceuticals, Inc. (Nasdaq:QCOR) today announced that it has repurchased 2.2 million of its common shares from Chaumiere Consultadoria & Servicos SDC Unipessoal L.D.A. The total purchase price was $10.9 million or $4.95 per common share. The privately negotiated transaction was made outside of Questcor's previously announced stock repurchase program, which remains in effect.