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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1111928	Ipg Photonics Corp	IPGP	Semiconductors & Related Devices (3674)	043444218

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1378546	Pv Timothy Mammen	C/O Ipg Photonics Corporation 50 Old Webster Road Oxford MA 01545	Vice-President, Cfo	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	Explanation
Common Stock	Acquisiton	2012-09-12	1,000	$1.88	32,124	No	4	M	Direct
Common Stock	Disposition	2012-09-12	1,000	$65.02	31,124	No	4	S	Direct

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

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Employee Stock Option (right to buy)	Disposition	2012-09-12	1,000	$0.00	1,000	$1.88

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
1,333		2015-09-22	No	4	M	Direct

Footnotes

The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 stock trading plan adopted by the Reporting Person on August 12, 2012.
The reported transactions from $65.00 to $65.21 per share. The weighted average price per share was $65.02. The Reporting Person undertakes to provide upon requested by the SEC staff, the Issuer or a security holder of the Issuer information regarding the number of shares sold at each separate price.
These options were exercisable in 4 equal annual installments starting September 22, 2006.