SILICON LABORATORIES INC. — Director's Dealing 2011

Dec 15, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: SILICON LABORATORIES INC (SLAB)
CIK: 0001038074
Period of Report: 2011-12-13

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-12-13	Common Stock, $0.0001 par value	M	300	$31.96	Acquired	95133	Direct
2011-12-13	Common Stock, $0.0001 par value	S	300	$42.63	Disposed	94833	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-12-13	Non-Qualified Stock Option (right to buy)	$31.96	M	300	Disposed	2018-02-15	Common Stock, $0.0001 par value (300)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock, $0.0001 par value	4850	Indirect
Common Stock, $0.0001 par value	4850	Indirect
Common Stock, $0.0001 par value	4850	Indirect

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. Reporting Person is co-trustee of the trust.

F3: Option vests and becomes exercisable with respect to (i) twenty-five percent (25%) of the option shares upon the date exercisable and (ii) the balance of the option shares in thirty-six (36) successive monthly installments over the thirty-six (36) month period measured from the date exercisable.

F4: Not applicable per instruction 4(c)(iii).