SILICON LABORATORIES INC. - Director's Dealing 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: SILICON LABORATORIES INC (SLAB)
CIK: 0001038074
Period of Report: 2010-04-14

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

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-04-14	Common Stock, $0.0001 par value	M	428	$22.63	Acquired	136500	Direct
2010-04-14	Common Stock, $0.0001 par value	M	9572	$24.3	Acquired	146072	Direct
2010-04-14	Common Stock, $0.0001 par value	S	10000	$50.77	Disposed	136072	Direct
2010-04-14	Common Stock, $0.0001 par value	S	625	$50.77	Disposed	9750	Indirect
2010-04-14	Common Stock, $0.0001 par value	S	625	$50.77	Disposed	9750	Indirect
2010-04-14	Common Stock, $0.0001 par value	S	625	$50.77	Disposed	9750	Indirect
2010-04-14	Common Stock, $0.0001 par value	S	625	$50.77	Disposed	9750	Indirect

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-04-14	Non-Qualified Stock Option (right to buy)	$22.63	M	428	Disposed	2011-07-18	Common Stock, $0.0001 par value (428)	Direct
2010-04-14	Non-Qualified Stock Option (right to buy)	$24.3	M	9572	Disposed	2012-06-13	Common Stock, $0.0001 par value (9572)	Direct

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 on the date exercisable.

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

F6: Option becomes exercisable as it vests in a series of twelve (12) successive equal monthly installments beginning on the date exercisable.