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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, DC 20549
------------
SCHEDULE 13G/A
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. 3)*
Silicon Laboratories Inc.
--------------------------------------------------------------------------------
(Name of Issuer)
Common Stock
--------------------------------------------------------------------------------
(Title of Class of Securities)
826919102
--------------------------------------------------------------------------------
(CUSIP Number)
December 31, 2003
--------------------------------------------------------------------------------
(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 26
Exhibit Index on Page 22
CUSIP No. 826919102 Page 2 of 26 Pages
--------------------------------------------------------------------------------
1 NAMES OF REPORTING PERSONS
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
Austin Ventures IV-A, L.P. ("AV IV-A")
--------------------------------------------------------------------------------
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
--------------------------------------------------------------------------------
5 SOLE VOTING POWER
0 shares.
--------------------------------------------------------
NUMBER OF 6 SHARED VOTING POWER
SHARES
BENEFICIALLY See response to row 5.
OWNED BY --------------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 0 shares.
WITH --------------------------------------------------------
8 SHARED DISPOSITIVE POWER
See response to row 7.
--------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
0
--------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
|_|
--------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
0.0%
--------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
PN
--------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
CUSIP No. 826919102 Page 3 of 26 Pages
--------------------------------------------------------------------------------
1 NAMES OF REPORTING PERSONS
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
Austin Ventures IV-B, L.P. ("AV IV-B")
--------------------------------------------------------------------------------
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
--------------------------------------------------------------------------------
5 SOLE VOTING POWER
0 shares.
--------------------------------------------------------
NUMBER OF 6 SHARED VOTING POWER
SHARES
BENEFICIALLY See response to row 5.
OWNED BY --------------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 0 shares.
WITH --------------------------------------------------------
8 SHARED DISPOSITIVE POWER
See response to row 7.
--------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
0
--------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
|_|
--------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
0.0%
--------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
PN
--------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
CUSIP No. 826919102 Page 4 of 26 Pages
--------------------------------------------------------------------------------
1 NAMES OF REPORTING PERSONS
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
AV Partners IV, L.P.
--------------------------------------------------------------------------------
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
--------------------------------------------------------------------------------
5 SOLE VOTING POWER
0 shares.
--------------------------------------------------------
NUMBER OF 6 SHARED VOTING POWER
SHARES
BENEFICIALLY See response to row 5.
OWNED BY --------------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 0 shares.
WITH --------------------------------------------------------
8 SHARED DISPOSITIVE POWER
See response to row 7.
--------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
0
--------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
|_|
--------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
0.0%
--------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
PN
--------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
CUSIP No. 826919102 Page 5 of 26 Pages
--------------------------------------------------------------------------------
1 NAMES OF REPORTING PERSONS
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
Austin Ventures V, L.P. ("AV V")
--------------------------------------------------------------------------------
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
--------------------------------------------------------------------------------
5 SOLE VOTING POWER
0 shares.
--------------------------------------------------------
NUMBER OF 6 SHARED VOTING POWER
SHARES
BENEFICIALLY See response to row 5.
OWNED BY --------------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 0 shares.
WITH --------------------------------------------------------
8 SHARED DISPOSITIVE POWER
See response to row 7.
--------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
0
--------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
|_|
--------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
0.0%
--------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
PN
--------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
CUSIP No. 826919102 Page 6 of 26 Pages
--------------------------------------------------------------------------------
1 NAMES OF REPORTING PERSONS
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
Austin Ventures V Affiliates Fund, L.P. ("AV V A")
--------------------------------------------------------------------------------
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
--------------------------------------------------------------------------------
5 SOLE VOTING POWER
0 shares.
--------------------------------------------------------
NUMBER OF 6 SHARED VOTING POWER
SHARES
BENEFICIALLY See response to row 5.
OWNED BY --------------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 0 shares.
WITH --------------------------------------------------------
8 SHARED DISPOSITIVE POWER
See response to row 7.
--------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
0
--------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
|_|
--------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
0.0%
--------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
PN
--------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
CUSIP No. 826919102 Page 7 of 26 Pages
--------------------------------------------------------------------------------
1 NAMES OF REPORTING PERSONS
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
AV Partners V, L.P.
--------------------------------------------------------------------------------
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
--------------------------------------------------------------------------------
5 SOLE VOTING POWER
0 shares.
--------------------------------------------------------
NUMBER OF 6 SHARED VOTING POWER
SHARES
BENEFICIALLY See response to row 5.
OWNED BY --------------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 0 shares.
WITH --------------------------------------------------------
8 SHARED DISPOSITIVE POWER
See response to row 7.
--------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
0
--------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
|_|
--------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
0.0%
--------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
PN
--------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
CUSIP No. 826919102 Page 8 of 26 Pages
--------------------------------------------------------------------------------
1 NAMES OF REPORTING PERSONS
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
Austin Ventures VI, L.P. ("AV VI")
--------------------------------------------------------------------------------
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
--------------------------------------------------------------------------------
5 SOLE VOTING POWER
330,281 shares, except that AV Partners VI, L.P. ("AVP
VI"), the general partner of AV VI, may be deemed to
have sole power to vote these shares, and Aragona,
DeAngelis, Garvey, Olkkola, Thornton and Wesner, the
general partners of AVP VI, may be deemed to have shared
power to vote these shares.
--------------------------------------------------------
NUMBER OF 6 SHARED VOTING POWER
SHARES
BENEFICIALLY See response to row 5.
OWNED BY --------------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 330,281 shares, except that AV Partners VI, L.P. ("AVP
WITH VI"), the general partner of AV VI, may be deemed to
have sole power to dispose of these shares, and Aragona,
DeAngelis, Garvey, Olkkola, Thornton and Wesner, the
general partners of AVP VI, 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
330,281
--------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
|_|
--------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
0.7%
--------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
PN
--------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
CUSIP No. 826919102 Page 9 of 26 Pages
--------------------------------------------------------------------------------
1 NAMES OF REPORTING PERSONS
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
Austin Ventures VI Affiliates Fund, L.P. ("AV VI A")
--------------------------------------------------------------------------------
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
--------------------------------------------------------------------------------
5 SOLE VOTING POWER
9,291 shares, except that AVP VI, the general partner of
AV VI A, may be deemed to have sole power to vote these
shares, and Aragona, DeAngelis, Garvey, Olkkola,
Thornton and Wesner, the general partners of AVP VI, may
be deemed to have shared power to vote these shares.
--------------------------------------------------------
NUMBER OF 6 SHARED VOTING POWER
SHARES
BENEFICIALLY See response to row 5.
OWNED BY --------------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 9,291 shares, except that AVP VI, the general partner of
WITH AV VI A, may be deemed to have sole power to dispose of
these shares, and Aragona, DeAngelis, Garvey, Olkkola,
Thornton and Wesner, the general partners of AVP VI, 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
9,291
--------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
|_|
--------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
0.0%
--------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
PN
--------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
CUSIP No. 826919102 Page 10 of 26 Pages
--------------------------------------------------------------------------------
1 NAMES OF REPORTING PERSONS
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
AV Partners VI, L.P.
--------------------------------------------------------------------------------
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
--------------------------------------------------------------------------------
5 SOLE VOTING POWER
339,572 shares, of which 330,281 are directly owned by
AV VI and 9,291 are directly owned by AV VI A. AVP VI,
the general partner of AV VI and AV VI A, may be deemed
to have sole power to vote these shares, and Aragona,
DeAngelis, Garvey, Olkkola, Thornton and Wesner, the
general partners of AVP VI, may be deemed to have shared
power to vote these shares.
--------------------------------------------------------
NUMBER OF 6 SHARED VOTING POWER
SHARES
BENEFICIALLY See response to row 5.
OWNED BY --------------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 339,572 shares, of which 330,281 are directly owned by
WITH AV VI and 9,291 are directly owned by AV VI A. AVP VI,
the general partner of AV VI and AV VI A, may be deemed
to have sole power to dispose of these shares, and
Aragona, DeAngelis, Garvey, Olkkola, Thornton and
Wesner, the general partners of AVP VI, 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
339,572
--------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
|_|
--------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
0.7%
--------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
PN
--------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
CUSIP No. 826919102 Page 11 of 26 Pages
--------------------------------------------------------------------------------
1 NAMES OF REPORTING PERSONS
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
Joseph C. Aragona ("Aragona")
--------------------------------------------------------------------------------
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
--------------------------------------------------------------------------------
5 SOLE VOTING POWER
42,742 shares, of which 2,645 are directly owned by
Aragona and 40,097 are directly owned by Aragona, Ltd.,
a Texas limited partnership, and Aragona, the sole
general partner of Aragona, Ltd., may be deemed to have
sole power to vote these shares.
--------------------------------------------------------
NUMBER OF 6 SHARED VOTING POWER
SHARES
BENEFICIALLY 343,972 shares, of which 330,281 shares are directly
OWNED BY owned by AV VI, 9,291 shares are directly owned by AV VI
EACH A, and 4,400 shares are directly owned by the Sandra &
REPORTING Joseph Aragona Family Foundation ("Aragona Foundation"),
PERSON a Texas non-profit corporation . Aragona is a general
WITH partner of AVP VI, the general partner of AV VI and AV
VI A, and is a trustee of the Aragona Foundation, and he
may be deemed to have shared power to vote these shares.
--------------------------------------------------------
7 SOLE DISPOSITIVE POWER
42,742 shares, of which 2,645 are directly owned by
Aragona and 40,097 are directly owned by Aragona, Ltd.,
a Texas limited partnership, and Aragona, the sole
general partner of Aragona, Ltd., may be deemed to have
sole power to dispose of these shares.
--------------------------------------------------------
8 SHARED DISPOSITIVE POWER
343,972 shares, of which 330,281 shares are directly
owned by AV VI, 9,291 shares are directly owned by AV VI
A, and 4,400 shares are directly owned by the Aragona
Foundation. Aragona is a general partner of AVP VI, the
general partner of AV VI and AV VI A, and is a trustee
of the Aragona Foundation, and he may be deemed to have
shared power to dispose of these shares.
--------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
386,714
--------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
|_|
--------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
0.8%
--------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
IN
--------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
CUSIP No. 826919102 Page 12 of 26 Pages
--------------------------------------------------------------------------------
1 NAMES OF REPORTING PERSONS
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
Kenneth P. DeAngelis "(DeAngelis")
--------------------------------------------------------------------------------
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
--------------------------------------------------------------------------------
5 SOLE VOTING POWER
68,879 shares, of which 41,325 are directly owned by
DeAngelis and 27,554 are directly owned by DeAngelis,
Ltd., a Texas limited partnership, and DeAngelis, the
sole general partner of DeAngelis, Ltd., may be deemed
to have sole power to vote these shares.
--------------------------------------------------------
NUMBER OF 6 SHARED VOTING POWER
SHARES
BENEFICIALLY 339,572 shares, of which 330,281 shares are directly
OWNED BY owned by AV VI and 9,291 shares are directly owned by AV
EACH VI A. DeAngelis is a general partner of AVP VI, the
REPORTING general partner of AV VI and AV VI A, and may be deemed
PERSON to have shared power to vote these shares.
WITH --------------------------------------------------------
7 SOLE DISPOSITIVE POWER
68,879 shares, of which 41,325 are directly owned by
DeAngelis and 27,554 are directly owned by DeAngelis,
Ltd., a Texas limited partnership, and DeAngelis, the
sole general partner of DeAngelis, Ltd., may be deemed
to have sole power to dispose of these shares.
--------------------------------------------------------
8 SHARED DISPOSITIVE POWER
339,572 shares, of which 330,281 shares are directly
owned by AV VI and 9,291 shares are directly owned by AV
VI A. DeAngelis is a general partner of AVP VI, the
general partner of AV VI and AV VI A, and may be deemed
to have shared power to dispose of these shares.
--------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
408,451
--------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
|_|
--------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
0.8%
--------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
IN
--------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
CUSIP No. 826919102 Page 13 of 26 Pages
--------------------------------------------------------------------------------
1 NAMES OF REPORTING PERSONS
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
Jeffery C. Garvey ("Garvey")
--------------------------------------------------------------------------------
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
--------------------------------------------------------------------------------
5 SOLE VOTING POWER
0 shares.
--------------------------------------------------------
NUMBER OF 6 SHARED VOTING POWER
SHARES
BENEFICIALLY 339,572 shares, of which 330,281 shares are directly
OWNED BY owned by AV VI and 9,291 shares are directly owned by AV
EACH VI A. Garvey is a general partner of AVP VI, the general
REPORTING partner of AV VI and AV VI A, and may be deemed to have
PERSON shared power to vote these shares.
WITH --------------------------------------------------------
7 SOLE DISPOSITIVE POWER
0 shares.
--------------------------------------------------------
8 SHARED DISPOSITIVE POWER
339,572 shares, of which 330,281 shares are directly
owned by AV VI and 9,291 shares are directly owned by AV
VI A. Garvey is a general partner of AVP VI, the general
partner of AV VI and AV VI A, and may be deemed to have
shared power to dispose of these shares.
--------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
339,572
--------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
|_|
--------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
0.7%
--------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
IN
--------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
CUSIP No. 826919102 Page 14 of 26 Pages
--------------------------------------------------------------------------------
1 NAMES OF REPORTING PERSONS
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
Edward E. Olkkola ("Olkkola")
--------------------------------------------------------------------------------
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
--------------------------------------------------------------------------------
5 SOLE VOTING POWER
0 shares.
--------------------------------------------------------
NUMBER OF 6 SHARED VOTING POWER
SHARES
BENEFICIALLY 339,572 shares, of which 330,281 shares are directly
OWNED BY owned by AV VI and 9,291 shares are directly owned by AV
EACH VI A. Olkkola is a general partner of AVP VI, the
REPORTING general partner of AV VI and AV VI A, and may be deemed
PERSON to have shared power to vote these shares.
WITH --------------------------------------------------------
7 SOLE DISPOSITIVE POWER
0 shares.
--------------------------------------------------------
8 SHARED DISPOSITIVE POWER
339,572 shares, of which 330,281 shares are directly
owned by AV VI and 9,291 shares are directly owned by AV
VI A. Olkkola is a general partner of AVP VI, the
general partner of AV VI and AV VI A, and may be deemed
to have shared power to dispose of these shares.
--------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
339,572
--------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
|_|
--------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
0.7%
--------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
IN
--------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
CUSIP No. 826919102 Page 15 of 26 Pages
--------------------------------------------------------------------------------
1 NAMES OF REPORTING PERSONS
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
John D. Thornton ("Thornton")
--------------------------------------------------------------------------------
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
--------------------------------------------------------------------------------
5 SOLE VOTING POWER
25,410 shares, of which 25,410 are directly owned by
John Thornton Family I, Ltd. ("Family I") a Texas
limited partnership, and Thornton, the sole general
partner of Family I, may be deemed to have sole power to
vote these shares.
--------------------------------------------------------
NUMBER OF 6 SHARED VOTING POWER
SHARES
BENEFICIALLY 339,572 shares, of which 330,281 shares are directly
OWNED BY owned by AV VI and 9,291 shares are directly owned by AV
EACH VI A. Thornton is a general partner of AVP VI, the
REPORTING general partner of AV VI and AV VI A, and may be deemed
PERSON to have shared power to vote these shares.
WITH --------------------------------------------------------
7 SOLE DISPOSITIVE POWER
25,410 shares, of which 25,410 are directly owned by
John Thornton Family I, Ltd. ("Family I") a Texas
limited partnership, and Thornton, the sole general
partner of Family I, may be deemed to have sole power to
dispose of these shares.
--------------------------------------------------------
8 SHARED DISPOSITIVE POWER
339,572 shares, of which 330,281 shares are directly
owned by AV VI and 9,291 shares are directly owned by AV
VI A. Thornton is a general partner of AVP VI, the
general partner of AV VI and AV VI A, and may be deemed
to have shared power to dispose of these shares.
--------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
364,982
--------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
|_|
--------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
0.7%
--------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
IN
--------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
CUSIP No. 826919102 Page 16 of 26 Pages
--------------------------------------------------------------------------------
1 NAMES OF REPORTING PERSONS
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
Blaine F. Wesner
--------------------------------------------------------------------------------
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
--------------------------------------------------------------------------------
5 SOLE VOTING POWER
30,532 shares.
--------------------------------------------------------
NUMBER OF 6 SHARED VOTING POWER
SHARES
BENEFICIALLY 339,572 shares, of which 330,281 shares are directly
OWNED BY owned by AV VI and 9,291 shares are directly owned by AV
EACH VI A. Wesner is a general partner of AVP VI, the general
REPORTING partner of AV VI and AV VI A, and may be deemed to have
PERSON shared power to vote these shares.
WITH --------------------------------------------------------
7 SOLE DISPOSITIVE POWER
30,532 shares.
--------------------------------------------------------
8 SHARED DISPOSITIVE POWER
339,572 shares, of which 330,281 shares are directly
owned by AV VI and 9,291 shares are directly owned by AV
VI A. Wesner is a general partner of AVP VI, the general
partner of AV VI and AV VI A, and may be deemed to have
shared power to dispose of these shares.
--------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
370,104
--------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
|_|
--------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
0.7%
--------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
IN
--------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
CUSIP No. 826919102 Page 17 of 26 Pages
--------------------------------------------------------------------------------
1 NAMES OF REPORTING PERSONS
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
William P. Wood ("Wood")
--------------------------------------------------------------------------------
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
--------------------------------------------------------------------------------
5 SOLE VOTING POWER
607,092 shares, of which 67,316 are directly owned by
Wood and 539,776 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 vote
these shares.
--------------------------------------------------------
NUMBER OF 6 SHARED VOTING POWER
SHARES
BENEFICIALLY 24,000 shares, all of which 24,000 are directly owned by
OWNED BY his spouse and children.
EACH --------------------------------------------------------
REPORTING 7 SOLE DISPOSITIVE POWER
PERSON
WITH 607,092 shares, of which 67,316 are directly owned by
Wood and 539,776 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
24,000 shares, all of which are directly owned by his
spouse and children.
--------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
631,092
--------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
|_|
--------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
1.3%
--------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
IN
--------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
Page 18 of 26 Pages
This statement amends the Statement on Schedule 13G filed by Austin
Ventures IV-A, L.P., Austin Ventures IV-B, L.P., AV Partners IV, L.P., Austin
Ventures V, L.P., Austin Ventures V Affiliates Fund, L.P., AV Partners V, L.P.,
Joseph C. Aragona, Kenneth P. DeAngelis, Jeffery C. Garvey, John D. Thornton,
Blaine F. Wesner and William P. Wood, and includes the statements filed by
Edward E. Olkkola, Austin Ventures VI, L.P., Austin Ventures VI Affiliates Fund,
L.P. and AV Partners VI, L.P. The foregoing entities and individuals are
collectively referred to as the "Reporting Persons." Only those items as to
which there has been a change are included in this Amendment No. 1.
Item 4. Ownership.
Provide the following information regarding the aggregate number and percentage
of the class of securities of the issuer identified in Item 1. 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, 2003.
(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 the 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
If this statement is being filed to report the fact that as of the date hereof
the reporting person has ceased to be the beneficial owner of more than five
percent of the class of securities, check the following: [X] Yes
Page 19 of 26 Pages
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 13, 2004
AUSTIN VENTURES IV-A, L.P. /s/ Kevin Kunz
By AV Partners IV, L.P., ----------------------------------------
Its General Partner Signature
Kevin Kunz
Chief Financial Officer/Attorney-In-Fact
AUSTIN VENTURES IV-B, L.P. /s/ Kevin Kunz
By AV Partners IV, L.P., ----------------------------------------
Its General Partner Signature
Kevin Kunz
Chief Financial Officer/Attorney-In-Fact
AV PARTNERS IV, L.P. /s/ Kevin Kunz
----------------------------------------
Signature
Kevin Kunz
Chief Financial Officer/Attorney-In-Fact
AUSTIN VENTURES V, L.P. /s/ Kevin Kunz
By AV Partners V, L.P., ----------------------------------------
Its General Partner Signature
Kevin Kunz
Chief Financial Officer/Attorney-In-Fact
AUSTIN VENTURES V AFFILIATES FUND, L.P. /s/ Kevin Kunz
By AV Partners V, L.P., ----------------------------------------
Its General Partner Signature
Kevin Kunz
Chief Financial Officer/Attorney-In-Fact
AV PARTNERS V, L.P. /s/ Kevin Kunz
----------------------------------------
Signature
Kevin Kunz
Chief Financial Officer/Attorney-In-Fact
Page 20 of 26 Pages
AUSTIN VENTURES VI, L.P. /s/ Kevin Kunz
By AV Partners VI, L.P., ----------------------------------------
Its General Partner Signature
Kevin Kunz
Chief Financial Officer/Attorney-In-Fact
AUSTIN VENTURES VI AFFILIATES FUND, L.P./s/ Kevin Kunz
By AV Partners VI, L.P., ----------------------------------------
Its General Partner Signature
Kevin Kunz
Chief Financial Officer/Attorney-In-Fact
AV PARTNERS VI, L.P. /s/ Kevin Kunz
----------------------------------------
Signature
Kevin Kunz
Chief Financial Officer/Attorney-In-Fact
JOSEPH C. ARAGONA /s/ Kevin Kunz
----------------------------------------
Signature
Kevin Kunz
Chief Financial Officer/Attorney-In-Fact
KENNETH P. DeANGELIS /s/ Kevin Kunz
----------------------------------------
Signature
Kevin Kunz
Chief Financial Officer/Attorney-In-Fact
JEFFERY C. GARVEY /s/ Kevin Kunz
----------------------------------------
Signature
Kevin Kunz
Chief Financial Officer/Attorney-In-Fact
EDWARD E. OLKKOLA /s/ Kevin Kunz
----------------------------------------
Signature
Kevin Kunz
Chief Financial Officer/Attorney-In-Fact
Page 21 of 26 Pages
JOHN D. THORNTON /s/ Kevin Kunz
----------------------------------------
Signature
Kevin Kunz
Chief Financial Officer/Attorney-In-Fact
BLAINE F. WESNER /s/ Kevin Kunz
----------------------------------------
Signature
Kevin Kunz
Chief Financial Officer/Attorney-In-Fact
WILLIAM P. WOOD /s/ Kevin Kunz
----------------------------------------
Signature
Kevin Kunz
Chief Financial Officer/Attorney-In-Fact
Page 22 of 26 Pages
EXHIBIT INDEX
Found on
Sequentially
Exhibit Numbered Page
------- -------------
Exhibit A: Agreement of Joint Filing 23
Exhibit B: Reference to Kevin Kunz as Attorney-In-Fact 26
Page 23 of 26 Pages
EXHIBIT A
Agreement of Joint Filing
The Reporting Persons 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 Reporting Persons.
Dated: February 13, 2004
AUSTIN VENTURES IV-A, L.P. /s/ Kevin Kunz
By AV Partners IV, L.P., ----------------------------------------
Its General Partner Signature
Kevin Kunz
Chief Financial Officer/Attorney-In-Fact
AUSTIN VENTURES IV-B, L.P. /s/ Kevin Kunz
By AV Partners IV, L.P., ----------------------------------------
Its General Partner Signature
Kevin Kunz
Chief Financial Officer/Attorney-In-Fact
AV PARTNERS IV, L.P. /s/ Kevin Kunz
----------------------------------------
Signature
Kevin Kunz
Chief Financial Officer/Attorney-In-Fact
AUSTIN VENTURES V, L.P. /s/ Kevin Kunz
By AV Partners V, L.P., ----------------------------------------
Its General Partner Signature
Kevin Kunz
Chief Financial Officer/Attorney-In-Fact
AUSTIN VENTURES V AFFILIATES FUND, L.P. /s/ Kevin Kunz
By AV Partners V, L.P., ----------------------------------------
Its General Partner Signature
Kevin Kunz
Chief Financial Officer/Attorney-In-Fact
Page 24 of 26 Pages
AV PARTNERS V, L.P. /s/ Kevin Kunz
----------------------------------------
Signature
Kevin Kunz
Chief Financial Officer/Attorney-In-Fact
AUSTIN VENTURES VI, L.P. /s/ Kevin Kunz
By AV Partners VI, L.P., ----------------------------------------
Its General Partner Signature
Kevin Kunz
Chief Financial Officer/Attorney-In-Fact
AUSTIN VENTURES VI AFFILIATES FUND, L.P./s/ Kevin Kunz
By AV Partners VI, L.P., ----------------------------------------
Its General Partner Signature
Kevin Kunz
Chief Financial Officer/Attorney-In-Fact
AV PARTNERS VI, L.P. /s/ Kevin Kunz
----------------------------------------
Signature
Kevin Kunz
Chief Financial Officer/Attorney-In-Fact
JOSEPH C. ARAGONA /s/ Kevin Kunz
----------------------------------------
Signature
Kevin Kunz
Chief Financial Officer/Attorney-In-Fact
KENNETH P. DeANGELIS /s/ Kevin Kunz
----------------------------------------
Signature
Kevin Kunz
Chief Financial Officer/Attorney-In-Fact
JEFFERY C. GARVEY /s/ Kevin Kunz
----------------------------------------
Signature
Kevin Kunz
Chief Financial Officer/Attorney-In-Fact
Page 25 of 26 Pages
EDWARD E. OLKKOLA /s/ Kevin Kunz
----------------------------------------
Signature
Kevin Kunz
Chief Financial Officer/Attorney-In-Fact
JOHN D. THORNTON /s/ Kevin Kunz
----------------------------------------
Signature
Kevin Kunz
Chief Financial Officer/Attorney-In-Fact
BLAINE F. WESNER /s/ Kevin Kunz
----------------------------------------
Signature
Kevin Kunz
Chief Financial Officer/Attorney-In-Fact
WILLIAM P. WOOD /s/ Kevin Kunz
----------------------------------------
Signature
Kevin Kunz
Chief Financial Officer/Attorney-In-Fact
Page 26 of 26 Pages
EXHIBIT B
REFERENCE TO KEVIN KUNZ AS ATTORNEY-IN-FACT
Kevin Kunz 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.