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4 1NASD 0001198704 Director Silicon Laboratories Inc. 0001038074 74-2793174 04/24/03 4 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 4 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP [ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. 1. Name and Address of Reporting Person(s) Cash, H. Berry c/o Interwest Partners 13455 Noel Road #1670 Dallas, TX 75240 2. Issuer Name and Ticker or Trading Symbol Silicon Laboratories Inc. (SLAB) 3. I.R.S. Identification Number of Reporting Person, if an entity (Voluntary) 4. Statement for Month/Day/Year 4/24/2003 5. If Amendment, Date of Original (Month/Day/Year) 6. Relationship of Reporting Person(s) to Issuer (Check all applicable) [X] Director [ ] 10% Owner [ ] Officer (give title below) [ ] Other (specify below) 7. Individual or Joint/Group Filing (Check Applicable Line) [X] Form filed by One Reporting Person [ ] Form filed by More than One Reporting Person SIGNATURE OF REPORTING PERSON /S/ By: Russell J. Brennan For: H. Berry Cash DATE 04/24/03
Table I Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned - ------------------------------------------------------------------------------------------------------------------------------------ 1)Title of Security 2)Trans- 3.Trans- 4.Securities Acquired(A) 5)Amount of 6) 7)Nature of action action or Disposed of (D) Securities Indirect Date Code A Beneficially D Beneficial (Month/ or Owned at or Ownership Day/Year) Code V Amount D Price End of Month I - ------------------------------------------------------------------------------------------------------------------------------------ Common Stock, $0.0001 par value 04/24/03 S 15,000 D $30.8240 350,000 D Direct Common Stock, $0.0001 par value 99,346 I Grandchildren'sTr ust Common Stock, $0.0001 par value 01/13/03 G V 20,000 D 10,000 I Mary B. Cash Trus t Table II (PART 1) Derivative Securities Acquired, Disposed of, or Beneficially Owned (Columns 1 through 6) - ------------------------------------------------------------------------------------------------------------------------------------ 1)Title of Derivative 2)Conversion 3)Trans- 4)Trans- 5)Number of Derivative 6)Date Exercisable and Security or Exercise action action Securities Acquired (A) Expiration Date Price of Date Code or Disposed of (D) Derivative Security Code V A D Exercisable Expiration - ------------------------------------------------------------------------------------------------------------------------------------ Non-Qualified Stock Option $31.1500 04/24/03 A 5,000 (1) 04/24/13 (right to buy) Table II (PART 2) Derivative Securities Acquired, Disposed of, or Beneficially Owned (Columns 1,3 and 7 through 11) - ------------------------------------------------------------------------------------------------------------------------------------ 1)Title of Derivative 3)Trans- 7)Title and Amount 8)Price 9)Number of 10) 11)Nature of Security action of Underlying of Deri- Derivative Indirect Date Securities vative Securities D Beneficial Amount or Security Beneficially or Ownership Number of Owned at I - Title Shares End of Month - ------------------------------------------------------------------------------------------------------------------------------------ Non-Qualified Stock Option 04/24/03 Common Stock, $0.0001 par value5,000 5,000 D Direct (right to buy) Explanation of Responses: (1) The Option is immediately exercisable but the shares vest upon the optionee's completion of one year of board service measured from the grant date.