SILICON LABORATORIES INC. — Director's Dealing 2011

May 16, 2011

SEC Form 3 — Initial Statement of Beneficial Ownership

Issuer: SILICON LABORATORIES INC (SLAB)
CIK: 0001038074
Period of Report: 2011-05-12

Reporting Person: Tuttle George Tyson (COO)

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock, $0.0001 par value	60347	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Non-Qualified Stock Option (right to buy)	$32.11	2017-02-15	Common Stock, $0.0001 par value (13000)		Direct
Non-Qualified Stock Option (right to buy)	$31.96	2018-02-15	Common Stock, $0.0001 par value (11511)		Direct

Footnotes

F1: Includes 43,795 restricted stock units (RSUs) that will entitle Reporting Person to receive one share of common stock per RSU. 13,911 RSUs will vest on February 15, 2012 and will be settled pursuant to the terms of the Issuer's 2000 Stock Incentive Plan. 7,169 RSUs will vest on February 15, 2012, 14,339 RSUs will vest on February 15, 2013, and 8,376 RSUs will vest on February 15, 2014 and will be settled pursuant to the terms of the Issuer's 2009 Stock Incentive Plan.

F2: Originally granted 30,000 option shares. Option vests and becomes exercisable with respect to (i) twenty percent (20%) of the total granted option shares on the date exercisable and (ii) the balance of the total granted option shares in a series of forty-eight (48) successive monthly installments over the forty-eight (48) month period measured from the date exercisable.

F3: Originally granted 21,250 option shares. Option vests and becomes exercisable with respect to (i) twenty-five percent (25%) of the total granted option shares on the date exercisable and (ii) the balance of the total granted option shares in a series of thirty-six (36) successive monthly installments over the thirty-six (36) month period measured from the date exercisable.