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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
1520652	Tyson George Tuttle	400 West Cesar Chavez Austin TX 78701	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	Explanation
Common Stock, $0.0001 Par Value	Acquisiton	2015-02-20	1,300	$32.11	222,807	No	4	M	Direct
Common Stock, $0.0001 Par Value	Disposition	2015-02-20	1,300	$49.91	221,507	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	2015-02-20	1,300	$0.00	1,300	$32.11

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
8,700	2008-02-15	2017-02-15	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 $49.90 and $49.93 per share.
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 from the date exercisable.
Not applicable per instruction 4(c)(iii).