SILICON LABORATORIES INC. — Director's Dealing 2010

Mar 25, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: SILICON LABORATORIES INC (SLAB)
CIK: 0001038074
Period of Report: 2010-03-23

Reporting Person: SOOCH NAVDEEP S (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-03-23	Common Stock, $0.0001 par value	M	34587	$15.1	Acquired	694358	Direct
2010-03-23	Common Stock, $0.0001 par value	S	34587	$49.018	Disposed	659771	Direct
2010-03-25	Common Stock, $0.0001 par value	M	2824	$15.1	Acquired	662595	Direct
2010-03-25	Common Stock, $0.0001 par value	S	2824	$49.0265	Disposed	659771	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-03-23	Non-Qualified Stock Option (right to buy)	$15.1	M	34587	Disposed	2011-09-21	Common Stock, $0.0001 par value (34587)	Direct
2010-03-25	Non-Qualified Stock Option (right to buy)	$15.1	M	2824	Disposed	2011-09-21	Common Stock, $0.0001 par value (2824)	Direct

Footnotes

F1: Shares sold pursuant to Reporting Person's 10b5-1 Trading Plan.

F2: Price represents the weighted average selling price. Prices range between $49.00 and $49.09.

F3: Price represents the weighted average selling price. Prices range between $49.00 and $49.05.

F4: Option becomes exercisable as it vests in a series of sixty (60) successive equal monthly installments measured from the date of grant.

F5: Not applicable per instruction 4(c)(iii).