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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1038074	Silicon Laboratories Inc	SLAB	Semiconductors & Related Devices (3674)	742793174

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1250012	P William Wood	1000 Rio Grande Austin TX 78701		Yes	No	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, $0.0001 Par Value	Disposition	2010-04-05	26,500	$50.00	129,276	No	4	S	Indirect	by Silverton Partners, LP
Common Stock, $0.0001 Par Value	Disposition	2010-04-06	23,500	$50.03	105,776	No	4	S	Indirect	by Silverton Partners, LP

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	S	Indirect	by Silverton Partners, LP
No	4	S	Indirect	by Silverton Partners, LP

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock, $0.0001 Par Value	5,388	Direct

Footnotes

Shares sold pursuant to Reporting Person's 10b5-1 Trading Plan.
Reporting Person is a general partner of Silverton Partners, LP. Reporting Person may be deemed a beneficial owner of the shares held by Silverton Partners, LP, but disclaims beneficial ownership in the shares held by Silverton Partners, LP, except to the extent of any indirect pecuniary interest therein.
Price represents the weighted average selling price. Prices range between $50.00 and $50.19.