SILICON LABORATORIES INC. — Director's Dealing 2012

Jan 12, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: SILICON LABORATORIES INC (SLAB)
CIK: 0001038074
Period of Report: 2012-01-10

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-01-10	Common Stock, $0.0001 par value	M	1171	$32.11	Acquired	96004	Direct
2012-01-10	Common Stock, $0.0001 par value	M	3829	$33.17	Acquired	99833	Direct
2012-01-10	Common Stock, $0.0001 par value	S	5000	$44.22	Disposed	94833	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-01-10	Non-Qualified Stock Option (right to buy)	$32.11	M	1171	Disposed	2017-02-15	Common Stock, $0.0001 par value (1171)	Direct
2012-01-10	Non-Qualified Stock Option (right to buy)	$33.17	M	3829	Disposed	2014-08-10	Common Stock, $0.0001 par value (3829)	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: 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 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) successive monthly installments over the forty-eight (48) month period measured from the date exercisable.

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