SILICON LABORATORIES INC. — Director's Dealing 2012

Mar 1, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: SILICON LABORATORIES INC (SLAB)
CIK: 0001038074
Period of Report: 2012-02-29

Reporting Person: CASH HARVEY B (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-02-29	Common Stock, $0.0001 par value	M	5000	$30.15	Acquired	76366	Direct
2012-02-29	Common Stock, $0.0001 par value	M	5000	$24.3	Acquired	81366	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-02-29	Non-Qualified Stock Option (right to buy)	$30.15	M	5000	Disposed	2012-04-24	Common Stock, $0.0001 par value (5000)	Direct
2012-02-29	Non-Qualified Stock Option (right to buy)	$24.3	M	5000	Disposed	2012-06-13	Common Stock, $0.0001 par value (5000)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock, $0.0001 par value	91976	Indirect

Footnotes

F1: These shares are held in a trust for the benefit of Reporting Person's grandchildren. Reporting Person is trustee of the trust.

F2: Option is immediately exercisable, but the shares vest upon Optionee's completion of one year of board service measured from the grant date.

F3: Not applicable per instruction 4(c)(iii).