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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
1197848	G William Bock	400 West Cesar Chavez Austin TX 78701	President	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	Explanation
Common Stock, $0.0001 Par Value	Acquisiton	2015-02-05	1,296	$32.98	74,231	No	4	M	Direct
Common Stock, $0.0001 Par Value	Disposition	2015-02-05	1,296	$47.90	72,935	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	2015-02-05	1,296	$0.00	1,296	$32.98

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
0	2007-11-08	2016-11-08	No	4	M	Direct

Footnotes

Shares sold pursuant to Reporting Person's 10b5-1 Trading Plan.
Price represents the weighted average selling price. Prices range between $47.80 and $48.01.
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).