-----BEGIN PRIVACY-ENHANCED MESSAGE----- Proc-Type: 2001,MIC-CLEAR Originator-Name: webmaster@www.sec.gov Originator-Key-Asymmetric: MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB MIC-Info: RSA-MD5,RSA, IW5CKmT+Rdce3Cefj5AGCB2HCEOzVIZfuwOMSn1Bot+Lx3QBXd809PIRD8P1Hy40 N33J63fgcD6zsJWLg8GdYg== 0000950005-01-000308.txt : 20010223 0000950005-01-000308.hdr.sgml : 20010223 ACCESSION NUMBER: 0000950005-01-000308 CONFORMED SUBMISSION TYPE: SC 13G PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20010214 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: SILICON LABORATORIES INC CENTRAL INDEX KEY: 0001038074 STANDARD INDUSTRIAL CLASSIFICATION: SEMICONDUCTORS & RELATED DEVICES [3674] IRS NUMBER: 742793174 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G SEC ACT: SEC FILE NUMBER: 005-60853 FILM NUMBER: 1544674 BUSINESS ADDRESS: STREET 1: 4635 BOSTON LN CITY: AUSTIN STATE: TX ZIP: 78735 MAIL ADDRESS: STREET 1: 4635 BOSTON LANE CITY: AUSTIN STATE: TX ZIP: 78735 FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: AUSTIN VENTURES IV A LP CENTRAL INDEX KEY: 0001106472 STANDARD INDUSTRIAL CLASSIFICATION: [] IRS NUMBER: 742717230 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G BUSINESS ADDRESS: STREET 1: 701 N BRAZOS SUITE 1400 CITY: AUSTIN STATE: TX ZIP: 78701 BUSINESS PHONE: 5124763952 MAIL ADDRESS: STREET 1: 701 N BRAZOS ST SUITE 1400 CITY: AUSTIN STATE: TX ZIP: 78701 SC 13G 1 0001.txt FORM SC 13G SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G (Rule 13d-102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULES 13d-1 (b), (c) AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO 13d-2 (b) (Amendment No._______)* Silicon Laboratories Inc. - -------------------------------------------------------------------------------- (Name of Issuer) Common Stock - -------------------------------------------------------------------------------- (Title of Class of Securities) 826919102 - -------------------------------------------------------------------------------- (CUSIP Number) December 31, 2000 - -------------------------------------------------------------------------------- (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule is filed: [ ] Rule 13d-1(b) [ ] Rule 13d-1(c) [X] Rule 13d-1(d) *The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page. The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes). (Continued on following pages) Page 1 of 22 Exhibit Index on Page 19 - ------------------------- ------------------------- CUSIP NO. 826919102 13G Page 2 of 22 - ------------------------- ------------------------- - -------------------------------------------------------------------------------- 1 NAME OF REPORTING SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON Austin Ventures IV-A, L.P. ("AV IV-A") Tax ID Number: - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [X] - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware - -------------------------------------------------------------------------------- NUMBER OF 5 SOLE VOTING POWER SHARES BENEFICIALLY 1,095,324 shares, except that AV Partners IV, OWNED BY EACH L.P. ("AVP IV"), the general partner of AV REPORTING IV-A, may be deemed to have sole power to PERSON vote these shares, and Joseph C. Aragona WITH ("Aragona"), Kenneth P. DeAngelis ("DeAngelis"), Jeffery C. Garvey ("Garvey) and William P. Wood ("Wood"), the general partners of AVP IV, may be deemed to have shared power to vote these shares. -------------------------------------------------- 6 SHARED VOTING POWER See response to row 5. -------------------------------------------------- 7 SOLE DISPOSITIVE POWER 1,095,324 shares, except that AVP IV, the general partner of AV IV-A, may be deemed to have sole power to dispose of these shares, and Aragona, DeAngelis, Garvey and Wood, the general partners of AVP IV, may be deemed to have shared power to dispose of these shares. -------------------------------------------------- 8 SHARED DISPOSITIVE POWER See response to row 7. - -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,095,324 - -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* [ ] - -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 2.29% - -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* PN - -------------------------------------------------------------------------------- * SEE INSTRUCTIONS BEFORE FILLING OUT! - ------------------------- ------------------------- CUSIP NO. 826919102 13G Page 3 of 22 - ------------------------- ------------------------- - -------------------------------------------------------------------------------- 1 NAME OF REPORTING SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON Austin Ventures IV-B, L.P. ("AV IV-B") Tax ID Number: - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [X] - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware - -------------------------------------------------------------------------------- NUMBER OF 5 SOLE VOTING POWER SHARES BENEFICIALLY 2,297,978 shares, except that AVP IV, the OWNED BY EACH general partner of AV IV-B, may be deemed to REPORTING have sole power to vote these shares, and PERSON Aragona, DeAngelis, Garvey and Wood, the WITH general partners of AVP IV, may be deemed to have shared power to vote these shares. -------------------------------------------------- 6 SHARED VOTING POWER See response to row 5. -------------------------------------------------- 7 SOLE DISPOSITIVE POWER 2,297,978 shares, except that AVP IV, the general partner of AV IV-B, may be deemed to have sole power to dispose of these shares, and Aragona, DeAngelis, Garvey and Wood, the general partners of AVP IV, may be deemed to have shared power to dispose of these shares. -------------------------------------------------- 8 SHARED DISPOSITIVE POWER See response to row 7. - -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,297,978 - -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* [ ] - -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 4.81% - -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* PN - -------------------------------------------------------------------------------- * SEE INSTRUCTIONS BEFORE FILLING OUT! - ------------------------- ------------------------- CUSIP NO. 826919102 13G Page 4 of 22 - ------------------------- ------------------------- - -------------------------------------------------------------------------------- 1 NAME OF REPORTING SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON AV Partners IV, L.P. ("AVP IV") Tax ID Number: - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [X] - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware - -------------------------------------------------------------------------------- NUMBER OF 5 SOLE VOTING POWER SHARES BENEFICIALLY 3,393,302 shares, of which 1,095,324 are OWNED BY EACH directly owned by AV IV-A and 2,297,978 are REPORTING directly owned by AV IV-B. AVP IV, the PERSON general partner of AV IV-A and AV IV-B, may WITH be deemed to have sole power to vote these shares, and Aragona, DeAngelis, Garvey and Wood, the general partners of AVP IV, may be deemed to have shared power to vote these shares. -------------------------------------------------- 6 SHARED VOTING POWER See response to row 5. -------------------------------------------------- 7 SOLE DISPOSITIVE POWER 3,393,302 shares, of which 1,095,324 are directly owned by AV IV-A and 2,297,978 are directly owned by AV IV-B. AVP IV, the general partner of AV IV-A and AV IV-B, may be deemed to have sole power to dispose of these shares, and Aragona, DeAngelis, Garvey and Wood, the general partners of AVP IV, may be deemed to have shared power to dispose of these shares. -------------------------------------------------- 8 SHARED DISPOSITIVE POWER See response to row 7. - -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,393,302 - -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* [ ] - -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 7.10% - -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* PN - -------------------------------------------------------------------------------- * SEE INSTRUCTIONS BEFORE FILLING OUT! - ------------------------- ------------------------- CUSIP NO. 826919102 13G Page 5 of 22 - ------------------------- ------------------------- - -------------------------------------------------------------------------------- 1 NAME OF REPORTING SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON Austin Ventures V, L.P. ("AV V") Tax ID Number: - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [X] - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware - -------------------------------------------------------------------------------- NUMBER OF 5 SOLE VOTING POWER SHARES BENEFICIALLY 6,371,334 shares, except that AV Partners V, OWNED BY EACH L.P. ("AVP V"), the general partner of AV V, REPORTING may be deemed to have sole power to vote PERSON these shares, and Joseph C. Aragona WITH ("Arogona"), Kenneth P. DeAngelis ("DeAngelis"), Jeffery C. Garvey ("Garvey), John D. Thornton ("Thornton"), Blaine F. Wesner ("Wesner") and William P. Wood ("Wood"), partners of AVP V, may be deemed to have shared power to vote these shares. -------------------------------------------------- 6 SHARED VOTING POWER See response to row 5. -------------------------------------------------- 7 SOLE DISPOSITIVE POWER 6,371,334 shares, except that AVP V, the general partner of AV V, may be deemed to have sole power to dispose of these shares, and Aragona, DeAngelis, Garvey, Thornton, Wesner and Wood, partners of AVP V, may be deemed to have shared power to dispose of these shares. -------------------------------------------------- 8 SHARED DISPOSITIVE POWER See response to row 7. - -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 6,371,334 - -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* [ ] - -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 13.34% - -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* PN - -------------------------------------------------------------------------------- * SEE INSTRUCTIONS BEFORE FILLING OUT! - ------------------------- ------------------------- CUSIP NO. 826919102 13G Page 6 of 22 - ------------------------- ------------------------- - -------------------------------------------------------------------------------- 1 NAME OF REPORTING SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON Austin Ventures V Affiliates Fund, L.P. ("AV V A") Tax ID Number: - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [X] - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware - -------------------------------------------------------------------------------- NUMBER OF 5 SOLE VOTING POWER SHARES BENEFICIALLY 318,568 shares, except that AVP V, the OWNED BY EACH general partner of AV V A, may be deemed to REPORTING have sole power to vote these shares, and PERSON Aragona, DeAngelis, Garvey, Thornton, Wesner WITH and Wood, partners of AVP V, may be deemed to have shared power to vote these shares. -------------------------------------------------- 6 SHARED VOTING POWER See response to row 5. -------------------------------------------------- 7 SOLE DISPOSITIVE POWER 318,568 shares, except that AVP V, the general partner of AV V A, may be deemed to have sole power to dispose of these shares, and Aragona, DeAngelis, Garvey, Thornton, Wesner and Wood, partners of AVP V, may be deemed to have shared power to dispose of these shares. -------------------------------------------------- 8 SHARED DISPOSITIVE POWER See response to row 7. - -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 318,568 - -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* [ ] - -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 0.67% - -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* PN - -------------------------------------------------------------------------------- * SEE INSTRUCTIONS BEFORE FILLING OUT! - ------------------------- ------------------------- CUSIP NO. 826919102 13G Page 7 of 22 - ------------------------- ------------------------- - -------------------------------------------------------------------------------- 1 NAME OF REPORTING SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON AV Partners V, L.P. ("AVP V") Tax ID Number: - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [X] - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware - -------------------------------------------------------------------------------- NUMBER OF 5 SOLE VOTING POWER SHARES BENEFICIALLY 6,689,902 shares, of which 6,371,334 are OWNED BY EACH directly owned by AV V and 318,568 are REPORTING directly owned by AV V A. AVP V, the general PERSON partner of AV V and AV V A, may be deemed to WITH have sole power to vote these shares, and Aragona, DeAngelis, Garvey, Thornton, Wesner and Wood, partners of AVP V, may be deemed to have shared power to vote these shares. -------------------------------------------------- 6 SHARED VOTING POWER See response to row 5. -------------------------------------------------- 7 SOLE DISPOSITIVE POWER 6,689,902 shares, of which 6,371,334 are directly owned by AV V and 318,568 are directly owned by AV V A. AVP V, the general partner of AV V and AV V A, may be deemed to have sole power to dispose of these shares, and Aragona, DeAngelis, Garvey, Thornton, Wesner and Wood, partners of AVP V, may be deemed to have shared power to dispose of these shares. -------------------------------------------------- 8 SHARED DISPOSITIVE POWER See response to row 7. - -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 6,689,902 - -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* [ ] - -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 14.01% - -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* PN - -------------------------------------------------------------------------------- * SEE INSTRUCTIONS BEFORE FILLING OUT! - ------------------------- ------------------------- CUSIP NO. 826919102 13G Page 8 of 22 - ------------------------- ------------------------- - -------------------------------------------------------------------------------- 1 NAME OF REPORTING SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON Joseph C. Aragona ("Aragona") Tax ID Number: - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [X] - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION U.S. Citizen - -------------------------------------------------------------------------------- NUMBER OF 5 SOLE VOTING POWER SHARES BENEFICIALLY 0 shares OWNED BY EACH REPORTING PERSON WITH -------------------------------------------------- 6 SHARED VOTING POWER 10,087,604 shares, of which 1,095,324 are directly owned by AV IV-A, 2,297,978 are directly owned by AV IV-B, 6,371,334 are directly owned by AV V, 318,568 are directly owned by AV V A and 4,400 are directly owned by the Sandra & Joseph Aragona Family Foundation ("Aragona Foundation"), a Texas non-profit corporation. Aragona is a general partner of both AV IV, the general partner of AV IV-A and AV IV-B, and AVP V, the general partner of AV V and AV V A, and is a trustee of the Aragona Foundation, and may be deemed to have shared power to vote these shares. -------------------------------------------------- 7 SOLE DISPOSITIVE POWER 0 shares -------------------------------------------------- 8 SHARED DISPOSITIVE POWER 10,087,604 shares, of which 1,095,324 are directly owned by AV IV-A, 2,297,978 are directly owned by AV IV-B, 6,371,334 are directly owned by AV V, 318,568 are directly owned by AV V A and 4,400 are directly owned by the Sandra & Joseph Aragona Family Foundation ("Aragona Foundation"), a Texas non-profit corporation. Aragona is a general partner of both AV IV, the general partner of AV IV-A and AV IV-B, and AVP V, the general partner of AV V and AV V A, and is a trustee of the Aragona Foundation, and may be deemed to have shared power to dispose of these shares. - -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 10,087,604 - -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* [ ] - -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 21.14% - -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IN - -------------------------------------------------------------------------------- * SEE INSTRUCTIONS BEFORE FILLING OUT! - ------------------------- ------------------------- CUSIP NO. 826919102 13G Page 9 of 22 - ------------------------- ------------------------- - -------------------------------------------------------------------------------- 1 NAME OF REPORTING SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON Kenneth P. DeAngelis ("DeAngelis") Tax ID Number: - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [X] - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION U.S. Citizen - -------------------------------------------------------------------------------- NUMBER OF 5 SOLE VOTING POWER SHARES BENEFICIALLY 3,000 shares OWNED BY EACH REPORTING PERSON WITH -------------------------------------------------- 6 SHARED VOTING POWER 10,083,204 shares, of which 1,095,324 are directly owned by AV IV-A, 2,297,978 are directly owned by AV IV-B, 6,371,334 are directly owned by AV V and 318,568 are directly owned by AV V A. DeAngelis is a general partner of both AV IV, the general partner of AV IV-A and AV IV-B, and AVP V, the general partner of AV V and AV V A, and may be deemed to have shared power to vote these shares. -------------------------------------------------- 7 SOLE DISPOSITIVE POWER 3,000 shares -------------------------------------------------- 8 SHARED DISPOSITIVE POWER 10,083,204 shares, of which 1,095,324 are directly owned by AV IV-A, 2,297,978 are directly owned by AV IV-B, 6,371,334 are directly owned by AV V and 318,568 are directly owned by AV V A. DeAngelis is a general partner of both AV IV, the general partner of AV IV-A and AV IV-B, and AVP V, the general partner of AV V and AV V A, and may be deemed to have shared power to dispose of these shares. - -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 10,086,204 - -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* [ ] - -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 21.12% - -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IN - -------------------------------------------------------------------------------- * SEE INSTRUCTIONS BEFORE FILLING OUT! - ------------------------- ------------------------- CUSIP NO. 826919102 13G Page 10 of 22 - ------------------------- ------------------------- - -------------------------------------------------------------------------------- 1 NAME OF REPORTING SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON Jeffery C. Garvey ("Garvey") Tax ID Number: - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [X] - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION U.S. Citizen - -------------------------------------------------------------------------------- NUMBER OF 5 SOLE VOTING POWER SHARES BENEFICIALLY 0 shares OWNED BY EACH REPORTING PERSON WITH -------------------------------------------------- 6 SHARED VOTING POWER 10,083,204 shares, of which 1,095,324 are directly owned by AV IV-A, 2,297,978 are directly owned by AV IV-B, 6,371,334 are directly owned by AV V and 318,568 are directly owned by AV V A. Garvey is a general partner of both AV IV, the general partner of AV IV-A and AV IV-B, and AVP V, the general partner of AV V and AV V A, and may be deemed to have shared power to vote these shares. -------------------------------------------------- 7 SOLE DISPOSITIVE POWER 0 shares -------------------------------------------------- 8 SHARED DISPOSITIVE POWER 10,083,204 shares, of which 1,095,324 are directly owned by AV IV-A, 2,297,978 are directly owned by AV IV-B, 6,371,334 are directly owned by AV V and 318,568 are directly owned by AV V A. Garvey is a general partner of both AV IV, the general partner of AV IV-A and AV IV-B, and AVP V, the general partner of AV V and AV V A, and may be deemed to have shared power to dispose of these shares. - -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 10,083,204 - -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* [ ] - -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 21.12% - -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IN - -------------------------------------------------------------------------------- * SEE INSTRUCTIONS BEFORE FILLING OUT! - ------------------------- ------------------------- CUSIP NO. 826919102 13G Page 11 of 22 - ------------------------- ------------------------- - -------------------------------------------------------------------------------- 1 NAME OF REPORTING SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON John D. Thornton ("Thornton") Tax ID Number: - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [X] - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION U.S. Citizen - -------------------------------------------------------------------------------- NUMBER OF 5 SOLE VOTING POWER SHARES BENEFICIALLY 0 shares OWNED BY EACH REPORTING PERSON WITH -------------------------------------------------- 6 SHARED VOTING POWER 6,694,302 shares, of which 6,371,334 are directly owned by AV V, 318,568 are directly owned by AV V A and 4,400 are directly owned by the Julie & John Thornton Family Foundation ("Thornton Foundation"), a Texas non-profit corporation. Thornton is a general partner of AVP V, the general partner of AV V and AV V A, and is a trustee of the Thornton Foundation, and may be deemed to have shared power to vote these shares. -------------------------------------------------- 7 SOLE DISPOSITIVE POWER 0 shares -------------------------------------------------- 8 SHARED DISPOSITIVE POWER 6,694,302 shares, of which 6,371,334 are directly owned by AV V, 318,568 are directly owned by AV V A and 4,400 are directly owned by the Julie & John Thornton Family Foundation ("Thornton Foundation"), a Texas non-profit corporation. Thornton is a general partner of AVP V, the general partner of AV V and AV V A, and is a trustee of the Thornton Foundation, and may be deemed to have shared power to dispose of these shares. - -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 6,694,302 - -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* [ ] - -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 14.02% - -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IN - -------------------------------------------------------------------------------- * SEE INSTRUCTIONS BEFORE FILLING OUT! - ------------------------- ------------------------- CUSIP NO. 826919102 13G Page 12 of 22 - ------------------------- ------------------------- - -------------------------------------------------------------------------------- 1 NAME OF REPORTING SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON Blaine F. Wesner ("Wesner") Tax ID Number: - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [X] - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION U.S. Citizen - -------------------------------------------------------------------------------- NUMBER OF 5 SOLE VOTING POWER SHARES BENEFICIALLY 2,400 shares OWNED BY EACH REPORTING PERSON WITH -------------------------------------------------- 6 SHARED VOTING POWER 6,689,902 shares, of which 6,371,334 are directly owned by AV V and 318,568 are directly owned by AV V A. Wesner is a general partner of AVP V, the general partner of AV V and AV V A, and may be deemed to have shared power to vote these shares. -------------------------------------------------- 7 SOLE DISPOSITIVE POWER 2,400 shares -------------------------------------------------- 8 SHARED DISPOSITIVE POWER 6,689,902 shares, of which 6,371,334 are directly owned by AV V and 318,568 are directly owned by AV V A. Wesner is a general partner of AVP V, the general partner of AV V and AV V A, and may be deemed to have shared power to dispose of these shares. - -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 6,692,302 - -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* [ ] - -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 14.02% - -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IN - -------------------------------------------------------------------------------- * SEE INSTRUCTIONS BEFORE FILLING OUT! - ------------------------- ------------------------- CUSIP NO. 826919102 13G Page 13 of 22 - ------------------------- ------------------------- - -------------------------------------------------------------------------------- 1 NAME OF REPORTING SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON William P. Wood ("Wood") Tax ID Number: - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [X] - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION U.S. Citizen - -------------------------------------------------------------------------------- NUMBER OF 5 SOLE VOTING POWER SHARES BENEFICIALLY 644,576 shares, of which 30,000 are directly OWNED BY EACH owned by Wood and OF 614,576 shares are REPORTING directly owned by Silverton Partners, L.P. PERSON ("Silverton"), a Texas limited partnership, WITH and Wood, the sole general partner of Silverton, may be deemed to have sole power to vote these shares. -------------------------------------------------- 6 SHARED VOTING POWER 10,087,604 shares, of which 1,095,324 are directly owned by AV IV-A, 2,297,978 are directly owned by AV IV-B, 6,371,334 are directly owned by AV V, 318,568 are directly owned by AV V A and 4,400 are directly owned by the Silverton Foundation, a Texas non-profit corporation. Wood is a general partner of AV IV, the general partner of AV IV-A and AV IV-B, and a partner of AVP V, the general partner of AV V and AV V A, and is a trustee of the Silverton Foundation, and may be deemed to have shared power to vote these shares. -------------------------------------------------- 7 SOLE DISPOSITIVE POWER 644,576 shares, of which 30,000 are directly owned by Wood and 614,576 shares are directly owned by Silverton Partners, L.P. ("Silverton"), a Texas limited partnership, and Wood, the sole general partner of Silverton, may be deemed to have sole power to dispose of these shares. -------------------------------------------------- 8 SHARED DISPOSITIVE POWER 10,087,604 shares, of which 1,095,324 are directly owned by AV IV-A, 2,297,978 are directly owned by AV IV-B, 6,371,334 are directly owned by AV V, 318,568 are directly owned by AV V A and 4,400 are directly owned by the Silverton Foundation, a Texas non-profit corporation. Wood is a general partner of AV IV, the general partner of AV IV-A and AV IV-B, and a partner of AVP V, the general partner of AV V and AV V A, and is a trustee of the Silverton Foundation, and may be deemed to have shared power to dispose of these shares. - -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 10,732,180 - -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* [ ] - -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 22.48% - -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* IN - -------------------------------------------------------------------------------- * SEE INSTRUCTIONS BEFORE FILLING OUT! Page 14 of 22 ITEM 1(A). NAME OF ISSUER Silicon Laboratories Inc. ITEM 1(B). ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES 4635 Boston Lane Austin, TX 78735 ITEM 2(A). NAME OF PERSONS FILING This Statement is filed by Austin Ventures IV-A, L.P., a Delaware limited partnership ("AV IV-A"), Austin Ventures IV-B, L.P., a Delaware limited partnership ("AV IV-B"), AV Partners IV, L.P., a Delaware limited partnership ("AVP IV"), Austin Ventures V, L.P., a Delaware limited partnership ("AV V"), Austin Ventures V Affiliates Fund, L.P., a Delaware limited partnership ("AV V A"), AV Partners V, L.P., a Delaware limited partnership ("AVP V"), Joseph C. Aragona ("Arogona"), Kenneth P. DeAngelis ("DeAngelis"), Jeffery C. Garvey ("Garvey), John D. Thornton ("Thornton"), Blaine F. Wesner ("Wesner") and William P. Wood ("Wood"). Aragona, DeAngelis, Garvey and Wood are the general partners of AVP IV. Aragona, DeAngelis, Garvey, Thornton, Wesner and Wood are partners of AVP V. The foregoing entities and individuals are collectively referred to as the "Reporting Persons." AVP IV, the general partner of AV IV-A and AV IV-B, may be deemed to have sole power to vote and sole power to dispose of shares of the issuer directly owned by AV IV-A and AV IV-B. Aragona, DeAngelis, Garvey and Wood are general partners of AVP IV and may be deemed to have shared power to vote and shared power to dispose of shares of the issuer directly owned by AV IV-A and AV IV-B. AVP V, the general partner of AV V and AV V A, may be deemed to have sole power to vote and sole power to dispose of shares of the issuer directly owned by AV V and AV V A. Aragona, DeAngelis, Garvey, Thornton, Wesner and Wood are partners of AVP V and may be deemed to have shared power to vote and shared power to dispose of shares of the issuer directly owned by AV V and AV V A. ITEM 2(B). ADDRESS OF PRINCIPAL OFFICE The address for each of the Reporting Persons is: Austin Ventures 701 N. Brazos St., Suite 1400 Austin, Texas 78701 ITEM 2(C) CITIZENSHIP AV IV-A, AV IV-B, AVP IV, AV V, AV V A and AVP V, are Delaware limited partnerships Aragona, DeAngelis, Garvey, Thornton, Wesner and Wood are United States citizens. ITEM 2(D) AND (E). TITLE OF CLASS OF SECURITIES AND CUSIP NUMBER Common Stock CUSIP # 826919102 ITEM 3. Not Applicable Page 15 of 22 ITEM 4. OWNERSHIP The following information with respect to the ownership of the Common Stock of the issuer by the persons filing this Statement is provided as of December 31, 2000: (a) Amount beneficially owned: See Row 9 of cover page for each Reporting Person. (b) Percent of Class: See Row 11 of cover page for each Reporting Person. (c) Number of shares as to which such person has: (i) Sole power to vote or to direct the vote: See Row 5 of cover page for each Reporting Person. (ii) Shared power to vote or to direct the vote: See Row 6 of cover page for each Reporting Person. (iii) Sole power to dispose or to direct the disposition of: See Row 7 of cover page for each Reporting Person. (iv) Shared power to dispose or to direct the disposition of: See Row 8 of cover page for each Reporting Person. ITEM 5. OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS Not applicable. ITEM 6. OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON. Under certain circumstances set forth in the limited partnership agreements of AV IV-A, AV IV-B, AVP IV, AV V, AV A and AVP V, the general and limited partners, of each of such entities may be deemed to have the right to receive dividends from, or the proceeds from, the sale of shares of the issuer owned by each such entity of which they are a partner. ITEM 7. IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY Not applicable. ITEM 8. IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP. Not applicable Page 16 of 22 ITEM 9. NOTICE OF DISSOLUTION OF GROUP. Not applicable ITEM 10. CERTIFICATION. Not applicable Page 17 of 22 SIGNATURES After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. Dated: February 14, 2001 AUSTIN VENTURES IV-A, L.P. /s/ John Nicholson By AV Partners IV, L.P., ---------------------------------------- Its General Partner Signature John Nicholson Chief Financial Officer/Attorney-In-Fact AUSTIN VENTURES IV-B, L.P. /s/ John Nicholson By AV Partners IV, L.P., ---------------------------------------- Its General Partner Signature John Nicholson Chief Financial Officer/Attorney-In-Fact AV PARTNERS IV, L.P. /s/ John Nicholson ---------------------------------------- Signature John Nicholson Chief Financial Officer/Attorney-In-Fact AUSTIN VENTURES V, L.P. /s/ John Nicholson By AV Partners V, L.P., ---------------------------------------- Its General Partner Signature John Nicholson Chief Financial Officer/Attorney-In-Fact AUSTIN VENTURES V AFFILIATES FUND, L.P. /s/ John Nicholson By AV Partners V, L.P., ---------------------------------------- Its General Partner Signature John Nicholson Chief Financial Officer/Attorney-In-Fact AV PARTNERS V, L.P. /s/ John Nicholson ---------------------------------------- Signature John Nicholson Chief Financial Officer/Attorney-In-Fact Page 18 of 22 JOSEPH C. ARAGONA /s/ John Nicholson ---------------------------------------- Signature John Nicholson Chief Financial Officer/Attorney-In-Fact KENNETH P. DeANGELIS /s/ John Nicholson ---------------------------------------- Signature John Nicholson Chief Financial Officer/Attorney-In-Fact JEFFERY C. GARVEY /s/ John Nicholson ---------------------------------------- Signature John Nicholson Chief Financial Officer/Attorney-In-Fact JOHN D. THORNTON /s/ John Nicholson ---------------------------------------- Signature John Nicholson Chief Financial Officer/Attorney-In-Fact BLAINE F. WESNER /s/ John Nicholson ---------------------------------------- Signature John Nicholson Chief Financial Officer/Attorney-In-Fact WILLIAM P. WOOD /s/ John Nicholson ---------------------------------------- Signature John Nicholson Chief Financial Officer/Attorney-In-Fact Page 19 of 22 EXHIBIT INDEX Found on Sequentially Exhibit Numbered Page - ------- ------------- Exhibit A: Agreement of Joint Filing 20 Exhibit B: Reference to John Nicholson as Attorney-In-Fact 22 Page 20 of 22 EXHIBIT A Agreement of Joint Filing The undersigned hereby agree that a single Schedule 13G (or any amendment thereto) relating to the Common Stock of Silicon Laboratories, Inc. shall be filed on behalf of each of the undersigned and that this Agreement shall be filed as an exhibit to such Schedule 13G. Dated: February 14, 2001 AUSTIN VENTURES IV-A, L.P. /s/ John Nicholson By AV Partners IV, L.P., ---------------------------------------- Its General Partner Signature John Nicholson Chief Financial Officer/Attorney-In-Fact AUSTIN VENTURES IV-B, L.P. /s/ John Nicholson By AV Partners IV, L.P., ---------------------------------------- Its General Partner Signature John Nicholson Chief Financial Officer/Attorney-In-Fact AV PARTNERS IV, L.P. /s/ John Nicholson ---------------------------------------- Signature John Nicholson Chief Financial Officer/Attorney-In-Fact AUSTIN VENTURES V, L.P. /s/ John Nicholson By AV Partners V, L.P., ---------------------------------------- Its General Partner Signature John Nicholson Chief Financial Officer/Attorney-In-Fact AUSTIN VENTURES V AFFILIATES FUND, L.P. /s/ John Nicholson By AV Partners V, L.P., ---------------------------------------- Its General Partner Signature John Nicholson Chief Financial Officer/Attorney-In-Fact Page 21 of 22 AV PARTNERS V, L.P. /s/ John Nicholson ---------------------------------------- Signature John Nicholson Chief Financial Officer/Attorney-In-Fact JOSEPH C. ARAGONA /s/ John Nicholson ---------------------------------------- Signature John Nicholson Chief Financial Officer/Attorney-In-Fact KENNETH P. DeANGELIS /s/ John Nicholson ---------------------------------------- Signature John Nicholson Chief Financial Officer/Attorney-In-Fact JEFFERY C. GARVEY /s/ John Nicholson ---------------------------------------- Signature John Nicholson Chief Financial Officer/Attorney-In-Fact JOHN D. THORNTON /s/ John Nicholson ---------------------------------------- Signature John Nicholson Chief Financial Officer/Attorney-In-Fact BLAINE F. WESNER /s/ John Nicholson ---------------------------------------- Signature John Nicholson Chief Financial Officer/Attorney-In-Fact WILLIAM P. WOOD /s/ John Nicholson ---------------------------------------- Signature John Nicholson Chief Financial Officer/Attorney-In-Fact Page 22 of 22 EXHIBIT B REFERENCE TO JOHN NICHOLSON AS ATTORNEY-IN-FACT John Nicholson has signed the enclosed documents as Attorney-In-Fact. Note that copies of the applicable Power of Attorneys are already on file with the appropriate agencies. -----END PRIVACY-ENHANCED MESSAGE-----