GT Advanced Technologies Inc. Prices $190,000,000 of 3.00% Convertible Senior Notes Due 2020 and 8,650,000 Shares of Common

GT Advanced Technologies Inc. Prices $190,000,000 of 3.00% Convertible Senior
Notes Due 2020 and 8,650,000 Shares of Common Stock

MERRIMACK, N.H., Dec. 5, 2013 (GLOBE NEWSWIRE) -- GT Advanced Technologies
Inc. (Nasdaq:GTAT) (the "Company") today announced the pricing of $190,000,000
aggregate principal amount of its 3.00% Convertible Senior Notes due 2020 (the
"Notes") and 8,650,000 shares of its common stock at a price of $8.65 per
share (the "Common Stock") in concurrent underwritten registered public
offerings (collectively, the "Offerings"). The Company has granted the
underwriters a 30-day option to purchase up to an additional $24,000,000
principal amount of Notes and 1,292,196 shares of Common Stock from the
Company, respectively. The Offerings are subject to market and other
conditions.

The Notes will mature on December 15, 2020, unless repurchased or converted in
accordance with their terms prior to such date, and will bear interest at a
rate of 3.00% per year, payable semiannually in arrears on June 15 and
December 15 of each year, beginning on June 15, 2014. The Notes will be
convertible, under certain circumstances, into cash, shares of the Company's
Common Stock, or a combination of both, at the Company's election, at an
initial conversion rate of 82.5764 shares of the Company's Common Stock per
$1,000 principal amount of notes, which is equivalent to an initial conversion
price of approximately $12.11 per share of the Company's Common Stock. The
Company will not have the right to redeem the Notes prior to maturity.

The Company estimates that the net proceeds of the Offerings will be
approximately $254,000,000 (or approximately $288,000,000 if the underwriters'
options to purchase additional Notes and shares of Common Stock are exercised
in full), after deducting the underwriters' discounts and commissions and
estimated offering expenses. The Company intends to use the remainder of the
net proceeds of the Offerings for working capital and general corporate
purposes, which may include the acquisition of companies or businesses and
capital expenditures.

This press release shall not constitute an offer to sell or a solicitation of
an offer to buy these securities, nor shall there be any sale of these
securities, in any state in which such offer, solicitation or sale would be
unlawful prior to registration or qualification under the securities laws of
any such state.

Morgan Stanley & Co. LLC and Goldman, Sachs & Co. are acting as joint
book-running managers and Canaccord Genuity Inc. is acting as co-manager for
the Offerings. The Company has filed a registration statement (including a
base prospectus and related preliminary prospectus supplements) with the
Securities and Exchange Commission, or SEC, for the Offerings. Before you
invest, you should read the preliminary prospectus supplements, the
accompanying prospectus and the other documents the issuer has filed with the
SEC for more complete information about the Company and the Offerings.You may
get these documents for free by visiting EDGAR on the SEC web site at
www.sec.gov. Alternatively, the Company, the underwriters or any dealer
participating in the Offerings will arrange to send you the preliminary
prospectus supplements and the accompanying prospectus if you request them by
contacting Morgan Stanley & Co. LLC, Attn: Prospectus Department, 180 Varick
Street, Second Floor, New York, NY 10014, by calling (866) 718-1649 or by
emailing prospectus@morganstanley.com, or from Goldman, Sachs & Co., Attn:
Prospectus Department, 200 West Street, New York, NY 10282, by calling (866)
471-2526 or by emailing prospectus-ny@ny.email.gs.com.

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.

Forward-Looking Statements

This press release contains forward-looking statements regarding our planned
offer and sale of convertible senior notes and common stock and the use of the
net proceeds from any such sale. We cannot be sure that we will complete the
Offerings or, if we do, on what terms we will complete them.Forward-looking
statements are based on current beliefs and expectations and are subject to
inherent risks and uncertainties, including those discussed under the caption
"Risk Factors" in the prospectus and prospectus supplements.In addition,
management retains broad discretion with respect to the allocation of the net
proceeds of these Offerings.The forward-looking statements speak only as of
the date of this release, and 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: For additional information:
        
         Media
         GT Advanced Technologies
         Jeff Nestel-Patt, 603-204-2883
         jnestelpatt@gtat.com
        
         Investors/Analysts
         GT Advanced Technologies
         Bob Blair, 914-552-1413
         bob.blair@gtat.com

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