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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
1250012	P William Wood	1000 Rio Grande Austin TX 78701		Yes	No	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	2014-02-26	5,000	$50.03	8,546	No	4	M	Direct
Common Stock, $0.0001 Par Value	Disposition	2014-02-26	5,000	$51.22	3,546	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	2014-02-26	5,000	$0.00	5,000	$50.03

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
0	2004-04-29	2014-04-29	No	4	M	Direct

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock, $0.0001 Par Value	40,442	Indirect	Umari II, LP

Footnotes

Price represents the weighted average selling price. Prices range between $51.11 and $51.31.
Reporting Person is the sole general partner of Umari II, LP. Reporting Person may be deemed a beneficial owner of the shares held by Umari II, LP, but disclaims beneficial ownership in the shares held by Umari II, LP, except to the extent of any pecuniary interest therein.
Option is immediately exercisable but the shares vest upon the Optionee's completion of one year of board service measured from the grant date.
Not applicable per instruction 4(c)(iii).