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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
1197843	D Jonathan Ivester	400 W Cesar Chavez Austin TX 78701	Sr Vp Of Worldwide Operations	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, $0.0001 Par Value	Disposition	2013-03-14	3,000	$42.11	76,244	No	4	S	Direct
Common Stock, $0.0001 Par Value	Disposition	2013-03-14	850	$42.11	0	No	4	S	Indirect	E. Ivester Heritage Trust
Common Stock, $0.0001 Par Value	Disposition	2013-03-14	850	$42.11	0	No	4	S	Indirect	S. Ivester Heritage Trust
Common Stock, $0.0001 Par Value	Acquisiton	2013-03-15	9,700	$0.00	85,944	No	4	A	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	S	Direct
No	4	S	Indirect	E. Ivester Heritage Trust
No	4	S	Indirect	S. Ivester Heritage Trust
No	4	A	Direct

Footnotes

Shares sold pursuant to Reporting Person's 10b5-1 Trading Plan.
These shares are held in a trust for the benefit of Reporting Person's child. Reporting Person is co-trustee of the trust.
Reflects the grant of restricted stock units (RSUs) that will entitle Reporting Person to receive one (1) share of common stock per RSU. The RSUs will vest completely on February 15 in the third (3rd) calendar year following the date of grant and will be settled pursuant to the terms of the Issuer's 2009 Stock Incentive Plan.