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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1394954	Gt Advanced Technologies Inc.	GTAT	Semiconductors & Related Devices (3674)	030606749

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1454514	C David Gray	Gt Advanced Technologies Inc. 243 Daniel Webster Highway Merrimack NH 03054	Vp-Strategic Development	No	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock, Par Value $.01	Acquisiton	2011-08-11	10,681	$0.00	48,122	No	4	M	Direct
Common Stock, Par Value $.01	Disposition	2011-08-11	3,391	$12.10	44,731	No	4	F	Direct
Common Stock, Par Value $.01	Acquisiton	2011-08-12	21,579	$7.90	66,310	No	4	M	Direct
Common Stock, Par Value $.01	Disposition	2011-08-12	5,467	$12.05	60,843	No	4	S	Direct
Common Stock, Par Value $.01	Disposition	2011-08-12	16,180	$12.02	44,663	No	4	S	Direct
Common Stock, Par Value $.01	Disposition	2011-08-12	4,125	$12.04	40,538	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	M	Direct
No	4	F	Direct
No	4	M	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock, Par Value $.01	Restricted Stock Unit	Disposition	2011-08-11	10,681	$0.00	10,681	$0.00
Common Stock, Par Value $.01	Stock Option (Right to Buy)	Disposition	2011-08-12	21,579	$0.00	21,579	$7.90

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
32,041			No	4	M	Direct
64,737		2020-08-11	No	4	M	Direct

Footnotes

These shares were withheld to satisfy the reporting person's tax withholding obligations upon the vesting of restricted stock units on August 11, 2011.
Sale of these shares was made by mr. Gray pursuant to a Rule 10b5-1 plan adopted on May 26, 2011.
Each restricted stock unit represents the right to receive one share of common stock of GT Solar International, Inc.
The restricted stock units vest in four equal installments beginning August 11, 2011. Shares of common stock will be delivered to the reporting person on vesting.
Of these options, one fourth vested on August 11, 2011, the first anniversary of the date of grant, and the balance vest in equal monthly installments of 1/48th of total each month subsequent to August 2011.