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April 7, 2014

GT Advanced Technologies Announces $58.6 Million Specialty Furnace Order

Sale Leverages Technology Obtained in GT’s Acquisition of Thermal Technology
MERRIMACK, N.H., April 7, 2014 (GLOBE NEWSWIRE) — GT Advanced Technologies (Nasdaq:GTAT) today announced that it has received $58.6 million in orders this quarter for high temperature refractory metal furnaces that are used for a variety of industrial purposes. These orders will be reflected in Q2 reportable backlog and GT expects to recognize revenue from these orders during the second half of 2014.

“Thermal Technology, which was acquired by GT in 2013, developed the high temperature refractory furnace technology that will be deployed as part of these orders. It is expected that several other industrial products developed by Thermal Technology, will be taken to market through our existing sales and service channel, adding to our diversification beyond our traditional markets,” said Tom Gutierrez, GT’s president and CEO.

About GT Advanced Technologies Inc.

GT Advanced Technologies Inc. is a leading diversified technology company producing advanced materials and innovative crystal growth equipment for the global consumer electronics, power electronics, solar and LED industries. Its technical innovations accelerate the use of advanced materials, enabling a new generation of products across this diversified set of global markets. For additional information about GT Advanced Technologies, please visit www.gtat.com.

Forward-Looking Statements

Certain of the information in this press release relates to the Company’s future expectations, plans, products and prospects for its business and industry that constitute “forward-looking statements” for the purposes of the safe-harbor provisions of the Private Securities Litigation Reform Act of 1995, including but not limited to: the Company will complete the delivery and the customer will accept the specialty furnace order; the Company will recognize $58.6 million in revenue in connection with the specialty furnace order; these furnaces serve to expand the Company’s product and market diversification beyond its traditional markets; the Company’s ability to recognize revenue from customer contracts; the parties to the specialty furnace contract will comply with the contract terms necessary for delivery of the refractory metal furnaces. These forward-looking statements are not a guarantee of performance and are subject to a number of uncertainties and other factors, many of which are outside the Company’s control, which could cause actual events to differ materially from those expressed or implied by the statements. Factors that may cause actual events to differ materially from those expressed or implied by our forward-looking statements include: the Company being able to commercialize its technology under development; the equipment being sold by the Company is accepted by the customer; the customer pays the amounts expected under the contract; the Company’s products perform as expected; Company’s ability to transition its business to being a sapphire material and equipment provider; customers purchasing sufficient quantities under its arrangements with the Company; the Company complying with the provisions of its arrangements with its customers; the Company’s ability to complete development of and commercialize any new products; the impact of continued decreased demand and/or excess capacity in the markets for the output of the Company’s equipment; general economic conditions and the tightening credit markets having an adverse impact on demand for the Company’s products; limited sales of PV and other equipment products; the possibility that changes in government incentives may reduce demand for polysilicon and solar products, which would, in turn, reduce demand for our equipment; technological changes could render existing or proposed products or technologies obsolete; the Company may be unable to protect its intellectual property rights; competition from other manufacturers may increase; exchange rate fluctuations and conditions in the credit markets and economy may reduce demand for the Company’s products and various other risks as outlined in GT Advanced Technologies Inc.’s filings with the Securities and Exchange Commission, including the statements under the heading “Risk Factors” in the Company’s annual report on Form 10-K for the fiscal year ended December 31, 2013. Statements in this press release should be evaluated in light of these important factors. The statements in this press release represent GT Advanced Technologies Inc.’s expectations and beliefs as of the date of this press release. GT Advanced Technologies Inc.anticipates that subsequent events and developments may cause these expectations and beliefs to change. GT Advanced Technologies Inc. is under no obligation to, and expressly disclaims any such obligation to, update or alter its forward-looking statements, whether as a result of new information, future events, or otherwise.

CONTACT:

Media

Jeff Nestel-Patt

jeff.nestelpatt@gtat.com

603-204-2883

Investors/Analysts

Ryan Flaim

ryan.flaim@gtat.com

603-681-3869