PHILADELPHIA--(BUSINESS WIRE)--Lannett Company, Inc. (AMEX:LCI), a manufacturer of generic pharmaceuticals, today announced that, in connection with its previously announced underwritten registered public offering , the underwriters have exercised in full their over-allotment option to purchase an additional 750,000 shares of common stock. The over-allotment option was granted in connection with the public offering by Lannett of 2,500,000 shares of common stock and a selling stockholder of 2,500,000 shares of common stock at $5.00 per share, which closed on December 17, 2010.