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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	Acquisiton	2013-01-30	20,000	$38.50	101,888	No	4	M	Direct
Common Stock, $0.0001 Par Value	Disposition	2013-01-30	20,000	$44.50	81,888	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, $0.0001 Par Value	Non-Qualified Stock Option (right to buy)	Disposition	2013-01-30	20,000	$0.00	20,000	$38.50

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
0	2004-08-18	2013-08-18	No	4	M	Direct

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock, $0.0001 Par Value	850	Indirect	E. Ivester Heritage Trust
Common Stock, $0.0001 Par Value	850	Indirect	S. Ivester Heritage Trust

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.
Option vests and becomes exercisable with respect to (i) twenty percent (20%) of the option shares upon the date exercisable and (ii) the balance of the option shares in a series of forty-eight (48) successive monthly installments over the forty-eight (48) month period measured from the date exercisable.
Not applicable per instruction 4(c)(iii).