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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
1201091	Il Ho Kim	Gt Advanced Technologies Inc. 20 Trafalgar Square Nashua NH 03063	V.p., Chief Adm. Off., Gc	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	2011-10-15	2,916	$0.00	24,328	No	4	M	Direct
Common Stock, Par Value $.01	Disposition	2011-10-15	925	$7.69	23,403	No	4	F	Direct
Common Stock, Par Value $.01	Disposition	2011-10-17	1,493	$7.43	21,910	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	M	Direct
No	4	F	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	2011-10-15	2,916	$0.00	2,916	$0.00

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
40,834			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 October 15, 2011.
Sale of these shares were made by Mr. Kim pursuant to a Rule 10b5-1 plan adopted on March 11, 2011.
Each restricted stock unit represents the right to receive one share of common stock of GT Advanced Technologies Inc.
The restricted stock units vested one fourth on December 15, 2009, and the balance vest in equal monthly installments of 1/48th of total each month subsequent to December 2009. Shares of common stock are delivered to the reporting person upon vesting.