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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
1338515	Necip Sayiner	400 W Cesar Chavez Austin TX 78701	President & 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, $0.0001 Par Value	Disposition	2010-02-15	7,528	$45.24	235,309	No	4	F	Direct
Common Stock, $0.0001 Par Value	Acquisiton	2010-02-15	99,050	$0.00	334,359	No	4	A	Direct
Common Stock, $0.0001 Par Value	Disposition	2010-02-17	2,250	$45.75	332,109	No	4	S	Direct

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

Footnotes

Reflects the grant of restricted stock units (RSUs) that will entitle Reporting Person to receive one share of Common Stock per RSU. Thirty-three percent (33%) of the RSUs will vest on the second anniversary of the grant date; the remaining sixty-seven percent (67%) of the RSUs will vest on the third anniversary of the grant date. The grant of RSUs will be settled persuant to the terms of the Issuer's 2009 Stock Incentive Plan.
Shares sold pursuant to Reporting Person's 10b5-1 Trading Plan.
Price represents the weighted average selling price. Prices range between $45.49 and $46.0701 per share.