SILICON LABORATORIES INC. — Director's Dealing 2010

Feb 10, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: SILICON LABORATORIES INC (SLAB)
CIK: 0001038074
Period of Report: 2010-02-09

Reporting Person: IVESTER JONATHAN D (VP of Worldwide Operations)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-02-09	Common Stock, $0.0001 par value	M	4500	$22.63	Acquired	125520	Direct
2010-02-09	Common Stock, $0.0001 par value	S	4500	$44.61	Disposed	121020	Direct
2010-02-09	Common Stock, $0.0001 par value	S	625	$44.61	Disposed	11000	Indirect
2010-02-09	Common Stock, $0.0001 par value	S	625	$44.61	Disposed	11000	Indirect
2010-02-09	Common Stock, $0.0001 par value	S	625	$44.61	Disposed	11000	Indirect
2010-02-09	Common Stock, $0.0001 par value	S	625	$44.61	Disposed	11000	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-02-09	Non-Qualified Stock Option (right to buy)	$22.63	M	4500	Disposed	2011-07-18	Common Stock, $0.0001 par value (4500)	Direct

Footnotes

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

F2: These shares are held in a trust for the benefit of Reporting Person's child.

F3: These shares are held in a trust for the benefit of Reporting Person's child. Reporting Person is co-trustee of the trust.

F4: Option becomes exercisable as it vests in a series of sixty (60) successive equal monthly installments beginning July 18, 2001.

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