GT Advanced Technologies Inc. announced plans to offer $125,000,000 aggregate principal amount of convertible senior notes due 2020 (the "Notes") and 12,000,000 shares of its common stock ("Common Stock") in concurrent underwritten registered public offerings (collectively, the "Offerings"). In addition, the Company expects to grant the underwriters a 30-day option to purchase up to an additional $18,750,000 aggregate principal amount of Notes and 1,800,000 shares of Common Stock from the Company, respectively. The Offerings are subject to market and other conditions.