SILICON LABORATORIES INC. — Director's Dealing 2012

Feb 17, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: SILICON LABORATORIES INC (SLAB)
CIK: 0001038074
Period of Report: 2012-02-07

Reporting Person: IVESTER JONATHAN D (Sr VP or Worldwide Operations)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-02-07	Common Stock, $0.0001 par value	G	516	—	Disposed	94317	Direct
2012-02-15	Common Stock, $0.0001 par value	F	4216	$45.05	Disposed	90101	Direct
2012-02-15	Common Stock, $0.0001 par value	M	5000	$33.17	Acquired	95101	Direct
2012-02-15	Common Stock, $0.0001 par value	S	5000	$45.13	Disposed	90101	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-02-15	Non-Qualified Stock Option (right to buy)	$33.17	M	5000	Disposed	2014-08-10	Common Stock, $0.0001 par value (5000)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock, $0.0001 par value	3950	Indirect
Common Stock, $0.0001 par value	3950	Indirect
Common Stock, $0.0001 par value	3950	Indirect

Footnotes

F1: Gratuitous transfer for which no consideration was received.

F2: Shares sold pursuant to Reporting Person's 10b5-1 Trading Plan.

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 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) successively monthly installments over the forty-eight (48) month period measured from the date exercisable.

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