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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
88941	Semtech Corp	SMTC	Semiconductors & Related Devices (3674)	952119684

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1224946	Mohan Maheswaran	200 Flynn Road Camarillo CA 93012	President And Ceo	Yes	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	Acquisiton	2011-09-28	25,000	$17.89	77,311	No	4	M	Direct
Common Stock	Disposition	2011-09-28	23,270	$22.21	54,041	No	4	S	Direct
Common Stock	Disposition	2011-09-28	1,730	$23.04	52,311	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	M	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	Stock Option (Right to Buy)	Disposition	2011-09-28	25,000	$0.00	25,000	$17.89

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
50,000		2012-04-03	No	4	M	Direct

Footnotes

The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by Mr. Maheswaran on December 13, 2010.
This price represents the weighted average of these sales. The prices ranged from $21.8400 to $22.8400. Price and share details are available upon request.
This price represents the weighted average of these sales. The prices ranged from $22.9400 to $23.3200. Price and share details are available upon request.
This option vested in two equal installments on April 3, 2008 and April 3, 2009.