<PAGE>
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) AND (c) AND AMENDMENTS THERETO FILED
PURSUANT TO 13d-2(b)
(Amendment No. 1)(1)
Concentric Network Corp.
- --------------------------------------------------------------------------------
(Name of Issuer)
Common Stock
- --------------------------------------------------------------------------------
(Title of Class of Securities)
00020589R1
- --------------------------------------------------------------------------------
(CUSIP Number)
N/A
- --------------------------------------------------------------------------------
(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 12d-(c)
/X/ Rule 13d-1(d)
- ----------------------------
(1) 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).
<PAGE>
(Continued on following pages)
(Page 2 of 20 Pages)
<PAGE>
CUSIP NO. 00020589R1 13G Page 3 of 20 Pages
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSONS
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
Kleiner Perkins Caufield & Byers VII, L.P., a California
limited partnership ("KPCB VII") 94-3201863
- --------------------------------------------------------------------------------
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A
GROUP* (a) / / (b) /X/
- --------------------------------------------------------------------------------
3 SEC USE ONLY
- --------------------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
California limited partnership
- --------------------------------------------------------------------------------
5 SOLE VOTING POWER
0
NUMBER OF ----------------------------------------------------
SHARES 6 SHARED VOTING POWER
BENEFICIALLY 369,993
OWNED BY ----------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING 0
PERSON WITH ----------------------------------------------------
8 SHARED DISPOSITIVE POWER
369,993
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
369,993
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES
CERTAIN SHARES* / /
- --------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
2.4%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
PN
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
CUSIP NO. 00020589R1 13G Page 4 of 20 Pages
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSONS
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
KPCB VII Associates, L.P., a California
limited partnership ("KPCB VII Associates") 94-3203783
- --------------------------------------------------------------------------------
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
(a) / / (b) /X/
- --------------------------------------------------------------------------------
3 SEC USE ONLY
- --------------------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
California limited partnership
- --------------------------------------------------------------------------------
5 SOLE VOTING POWER 0
----------------------------------------------------
6 SHARED VOTING POWER
391,780 shares of which 369,993 shares are
directly held by KPCB VII and 21,787 shares
held directly by KPCB Information Sciences
NUMBER OF Zaibatsu Fund II, L.P., a California
SHARES limited partnership ("KPCB ZF II"). KPCB
BENEFICIALLY VII Associates is the general partner of
OWNED BY KPCB VII and KPCB ZF II.
EACH ----------------------------------------------------
REPORTING 7 SOLE DISPOSITIVE POWER 0
PERSON WITH ----------------------------------------------------
8 SHARED DISPOSITIVE POWER
391,780 shares of which 369,993 shares are
directly held by KPCB VII and 21,787 shares
held directly by KPCB ZF II. KPCB VII
Associates is the general partner of KPCB
VII and KPCB ZF II.
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
391,780
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES
CERTAIN SHARES* / /
- --------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
2.6%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
PN
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
CUSIP NO. 00020589R1 13G Page 5 of 20 Pages
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSONS
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
Brook Byers
- --------------------------------------------------------------------------------
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
(a) / / (b) /X/
- --------------------------------------------------------------------------------
3 SEC USE ONLY
- --------------------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
United States
- --------------------------------------------------------------------------------
5 SOLE VOTING POWER
519
----------------------------------------------------
6 SHARED VOTING POWER
391,780 shares of which 369,993 shares are
directly held by KPCB VII and 21,787 shares
are directly held by KPCB ZF II. KPCB VII
Associates is the general partner of KPCB
VII and KPCB ZF II. Mr. Byers is a general
partner of KPCB VII Associates. Mr. Byers
NUMBER OF disclaims beneficial ownership of the
SHARES shares held directly by KPCB VII and KPCB
BENEFICIALLY ZF II.
OWNED BY ----------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING 519
PERSON WITH ----------------------------------------------------
8 SHARED DISPOSITIVE POWER
391,780 shares of which 369,993 shares
are directly held by KPCB VII and 21,787
shares are directly held by KPCB ZF II.
KPCB VII Associates is the general partner
of KPCB VII and KPCB ZF II. Mr. Byers is a
general partner of KPCB VII Associates.
Mr. Byers disclaims beneficial ownership of
the shares held directly by KPCB VII and
KPCB ZF II.
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
392,299
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES
CERTAIN SHARES* / /
- --------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
2.6%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
IN
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
CUSIP NO. 00020589R1 13G Page 6 of 20 Pages
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSONS
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
Kevin Compton
- --------------------------------------------------------------------------------
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
(a) / / (b) /X/
- --------------------------------------------------------------------------------
3 SEC USE ONLY
- --------------------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
United States
- --------------------------------------------------------------------------------
5 SOLE VOTING POWER
134
----------------------------------------------------
6 SHARED VOTING POWER
391,780 shares of which 369,993 shares are
directly held by KPCB VII and 21,787 shares
are directly held by KPCB ZF II. KPCB VII
Associates is the general partner of KPCB
VII and KPCB ZF II. Mr. Compton is a
general partner of KPCB VII Associates.
NUMBER OF Mr. Compton disclaims beneficial ownership
SHARES of the shares held directly by KPCB VII and
BENEFICIALLY KPCB ZF II
OWNED BY ----------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING 134
PERSON WITH ----------------------------------------------------
8 SHARED DISPOSITIVE POWER
391,780 shares of which 369,993 shares are
directly held by KPCB VII and 21,787 shares
are directly held by KPCB ZF II. KPCB VII
Associates is the general partner of KPCB
VII and KPCB ZF II. Mr. Compton is a
general partner of KPCB VII Associates.
Mr. Compton disclaims beneficial ownership
of the shares held directly by KPCB VII and
KPCB ZF II
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
391,914
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES
CERTAIN SHARES* / /
- --------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
2.6%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
IN
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
CUSIP NO. 00020589R1 13G Page 7 of 20 Pages
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSONS
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
L. John Doerr
- --------------------------------------------------------------------------------
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
(a) / / (b) /X/
- --------------------------------------------------------------------------------
3 SEC USE ONLY
- --------------------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
United States
- --------------------------------------------------------------------------------
5 SOLE VOTING POWER
1,915
----------------------------------------------------
6 SHARED VOTING POWER
391,780 shares of which 369,993 shares are
directly held by KPCB VII and 21,787 shares
are directly held by KPCB ZF II. KPCB VII
Associates is the general partner of KPCB
VII and KPCB ZF II. Mr. Doerr is a general
partner of KPCB VII Associates. Mr. Doerr
NUMBER OF disclaims beneficial ownership of the
SHARES shares held directly by KPCB VII and KPCB
BENEFICIALLY ZF II.
OWNED BY ----------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING 1,915
PERSON WITH ----------------------------------------------------
8 SHARED DISPOSITIVE POWER
391,780 shares of which 369,993 shares are
directly held by KPCB VII and 21,787 shares
are directly held by KPCB ZF II. KPCB VII
Associates is the general partner of KPCB
VII and KPCB ZF II. Mr. Doerr is a general
partner of KPCB VII Associates. Mr. Doerr
disclaims beneficial ownership of the
shares held directly by KPCB VII and KPCB
ZF II.
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
393,695
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES
CERTAIN SHARES* / /
- --------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
2.6%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
IN
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
CUSIP NO. 00020589R1 13G Page 8 of 20 Pages
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSONS
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
William R. Hearst III
- --------------------------------------------------------------------------------
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
(a) / / (b) /X/
- --------------------------------------------------------------------------------
3 SEC USE ONLY
- --------------------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
United States
- --------------------------------------------------------------------------------
5 SOLE VOTING POWER
872
----------------------------------------------------
6 SHARED VOTING POWER
391,780 shares of which 369,993 shares are
directly held by KPCB VII and 21,787 shares
are directly held by KPCB ZF II. KPCB VII
Associates is the general partner of KPCB
VII and KPCB ZF II. Mr. Hearst is a
general partner of KPCB VII Associates.
NUMBER OF Mr. Hearst disclaims beneficial ownership
SHARES of the shares held directly by KPCB VII and
BENEFICIALLY KPCB ZF II.
OWNED BY ----------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING 872
PERSON WITH ----------------------------------------------------
8 SHARED DISPOSITIVE POWER
391,780 shares of which 369,993 shares are
directly held by KPCB VII and 21,787 shares
are directly held by KPCB ZF II. KPCB VII
Associates is the general partner of KPCB
VII and KPCB ZF II. Mr. Hearst is a
general partner of KPCB VII Associates.
Mr. Hearst disclaims beneficial ownership
of the shares held directly by KPCB VII and
KPCB ZF II.
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
392,652
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES
CERTAIN SHARES* / /
- --------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
2.6%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
IN
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
CUSIP NO. 00020589R1 13G Page 9 of 20 Pages
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSONS
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
Vinod Khosla
- --------------------------------------------------------------------------------
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
(a) / / (b) /X/
- --------------------------------------------------------------------------------
3 SEC USE ONLY
- --------------------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
United States
- --------------------------------------------------------------------------------
5 SOLE VOTING POWER
519
----------------------------------------------------
6 SHARED VOTING POWER
391,780 shares of which 369,993 shares are
directly held by KPCB VII and 21,787 shares
are directly held by KPCB ZF II. KPCB VII
Associates is the general partner of KPCB
VII and KPCB ZF II. Mr. Khosla is a
general partner of KPCB VII Associates.
NUMBER OF Mr. Khosla disclaims beneficial ownership
SHARES of the shares held directly by KPCB VII and
BENEFICIALLY KPCB ZF II.
OWNED BY ----------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING 519
PERSON WITH ----------------------------------------------------
8 SHARED DISPOSITIVE POWER
391,780 shares of which 369,993 shares are
directly held by KPCB VII and 21,787 shares
are directly held by KPCB ZF II. KPCB VII
Associates is the general partner of KPCB
VII and KPCB ZF II. Mr. Khosla is a
general partner of KPCB VII Associates.
Mr. Khosla disclaims beneficial ownership
of the shares held directly by KPCB VII and
KPCB ZF II.
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
392,299
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES
CERTAIN SHARES* / /
- --------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
2.6%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
IN
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
CUSIP NO. 00020589R1 13G Page 10 of 20 Pages
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSONS
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
Joseph Lacob
- --------------------------------------------------------------------------------
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
(a) / / (b) /X/
- --------------------------------------------------------------------------------
3 SEC USE ONLY
- --------------------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
United States
- --------------------------------------------------------------------------------
5 SOLE VOTING POWER
406
----------------------------------------------------
6 SHARED VOTING POWER
391,780 shares of which 369,993 shares are
directly held by KPCB VII and 21,787 shares
are directly held by KPCB ZF II. KPCB VII
Associates is the general partner of KPCB
VII and KPCB ZF II. Mr. Lacob is a general
partner of KPCB VII Associates. Mr. Lacob
NUMBER OF disclaims beneficial ownership of the
SHARES shares held directly by KPCB VII and KPCB
BENEFICIALLY ZF II.
OWNED BY ----------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING 406
PERSON WITH ----------------------------------------------------
8 SHARED DISPOSITIVE POWER
391,780 shares of which 369,993 shares are
directly held by KPCB VII and 21,787 shares
are directly held by KPCB ZF II. KPCB VII
Associates is the general partner of KPCB
VII and KPCB ZF II. Mr. Lacob is a general
partner of KPCB VII Associates. Mr. Lacob
disclaims beneficial ownership of the
shares held directly by KPCB VII and KPCB
ZF II.
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
392,186
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES
CERTAIN SHARES* / /
- --------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
2.6%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
IN
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
CUSIP NO. 00020589R1 13G Page 11 of 20 Pages
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSONS
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
Bernard Lacroute
- --------------------------------------------------------------------------------
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
(a) / / (b) /X/
- --------------------------------------------------------------------------------
3 SEC USE ONLY
- --------------------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
United States
- --------------------------------------------------------------------------------
5 SOLE VOTING POWER
134
----------------------------------------------------
6 SHARED VOTING POWER
391,780 shares of which 369,993 shares
are directly held by KPCB VII and 21,787
shares are directly held by KPCB ZF II.
KPCB VII Associates is the general partner
of KPCB VII and KPCB ZF II. Mr. Lacroute
is a general partner of KPCB VII
NUMBER OF Associates. Mr. Lacroute disclaims
SHARES beneficial ownership of the shares held
BENEFICIALLY directly by KPCB VII and KPCB ZF II.
OWNED BY ----------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING 134
PERSON WITH ----------------------------------------------------
8 SHARED DISPOSITIVE POWER
391,780 shares of which 369,993 shares are
directly held by KPCB VII and 21,787 shares
are directly held by KPCB ZF II. KPCB VII
Associates is the general partner of KPCB
VII and KPCB ZF II. Mr. Lacroute is a
general partner of KPCB VII Associates.
Mr. Lacroute disclaims beneficial ownership
of the shares held directly by KPCB VII and
KPCB ZF II.
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
391,914
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES
CERTAIN SHARES* / /
- --------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
2.6%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
IN
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
CUSIP NO. 00020589R1 13G Page 12 of 20 Pages
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSONS
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
James Lally
- --------------------------------------------------------------------------------
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
(a) / / (b) /X/
- --------------------------------------------------------------------------------
3 SEC USE ONLY
- --------------------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
United States
- --------------------------------------------------------------------------------
5 SOLE VOTING POWER
134
----------------------------------------------------
6 SHARED VOTING POWER
391,780 shares of which 369,993 shares
are directly held by KPCB VII and 21,787
shares are directly held by KPCB ZF II.
KPCB VII Associates is the general partner
of KPCB VII and KPCB ZF II. Mr. Lally is a
general partner of KPCB VII Associates.
NUMBER OF Mr. Lally disclaims beneficial ownership of
SHARES the shares held directly by KPCB VII and
BENEFICIALLY KPCB ZF II.
OWNED BY ----------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING 134
PERSON WITH ----------------------------------------------------
8 SHARED DISPOSITIVE POWER
391,780 shares of which 369,993 shares are
directly held by KPCB VII and 21,787 shares
are directly held by KPCB ZF II. KPCB VII
Associates is the general partner of KPCB
VII and KPCB ZF II. Mr. Lally is a general
partner of KPCB VII Associates. Mr. Lally
disclaims beneficial ownership of the
shares held directly by KPCB VII and KPCB
ZF II.
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
391,914
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES
CERTAIN SHARES* / /
- --------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
2.6%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
IN
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
CUSIP NO. 00020589R1 13G Page 13 of 20 Pages
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSONS
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
Douglas MacKenzie
- --------------------------------------------------------------------------------
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
(a) / / (b) /X/
- --------------------------------------------------------------------------------
3 SEC USE ONLY
- --------------------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
United States
- --------------------------------------------------------------------------------
5 SOLE VOTING POWER
134
----------------------------------------------------
6 SHARED VOTING POWER
391,780 shares of which 369,993 shares are
directly held by KPCB VII and 21,787 shares
are directly held by KPCB ZF II. KPCB VII
Associates is the general partner of KPCB
VII and KPCB ZF II. Mr. MacKenzie is a
general partner of KPCB VII Associates.
Mr. MacKenzie disclaims beneficial
NUMBER OF ownership of the shares held directly by
SHARES KPCB VII and KPCB ZF II.
BENEFICIALLY ----------------------------------------------------
OWNED BY 7 SOLE DISPOSITIVE POWER
EACH 134
REPORTING ----------------------------------------------------
PERSON WITH 8 SHARED DISPOSITIVE POWER
391,780 shares of which 369,993 shares are
directly held by KPCB VII and 21,787 shares
are directly held by KPCB ZF II. KPCB VII
Associates is the general partner of KPCB
VII and KPCB ZF II. Mr. MacKenzie is a
general partner of KPCB VII Associates.
Mr. MacKenzie disclaims beneficial
ownership of the shares held directly by
KPCB VII and KPCB ZF II.
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
391,914
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES
CERTAIN SHARES* / /
- --------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
2.6%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
IN
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
CUSIP NO. 00020589R1 13G Page 14 of 20 Pages
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSONS
S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
E. Floyd Kvamme
- --------------------------------------------------------------------------------
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
(a) / / (b) /X/
- --------------------------------------------------------------------------------
3 SEC USE ONLY
- --------------------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
United States
- --------------------------------------------------------------------------------
5 SOLE VOTING POWER
798
----------------------------------------------------
6 SHARED VOTING POWER
391,780 shares of which 369,993 shares are
directly held by KPCB VII and 21,787 shares
are directly held by KPCB ZF II. KPCB VII
Associates is the general partner of KPCB
VII and KPCB ZF II. Mr. Kvamme is a
general partner of KPCB VII Associates.
NUMBER OF Mr. Kvamme disclaims beneficial ownership
SHARES of the shares held directly by KPCB VII and
BENEFICIALLY KPCB ZF II.
OWNED BY ----------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING 798
PERSON WITH ----------------------------------------------------
8 SHARED DISPOSITIVE POWER
391,780 shares of which 369,993 shares are
directly held by KPCB VII and 21,787 shares
are directly held by KPCB ZF II. KPCB VII
Associates is the general partner of KPCB
VII and KPCB ZF II. Mr. Kvamme is a
general partner of KPCB VII Associates.
Mr. Kvamme disclaims beneficial ownership
of the shares held directly by KPCB VII and
KPCB ZF II.
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
392,578
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES
CERTAIN SHARES* / /
- --------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
2.6%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
IN
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
Page 15 of 20 Pages
ITEM 1(a) NAME OF ISSUER:
Concentric Network Corp.
ITEM 1(b) ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES:
10590 North Tantau Avenue
Cupertino, CA 95014
ITEM 2(a)-(c) NAME OF PERSON FILING:
This amendment is being filed by KPCB VII Associates, whose
principal business address is 2750 Sand Hill Road, Menlo
Park, California 94025. The names and business addresses
and citizenships of all the general partners of KPCB VII
Associates are set forth on Exhibit B hereto.
KPCB VII Associates is general partner to KPCB VII and
KPCB ZF II.
ITEM 2(d) TITLE OF CLASS OF SECURITIES:
Common Stock
ITEM 2(e) CUSIP NUMBER:
00020589R1
ITEM 3. IF THIS STATEMENT IS FILED PURSUANT TO RULES 13d-1(b) OR
13d-2(b), CHECK WHETHER THE PERSON FILING IS A:
Not Applicable
ITEM 4. OWNERSHIP.
Please see Item 5.
ITEM 5. OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS.
This statement is being filed to report the fact that as of
the date hereof each reporting person has ceased to be the
beneficial owner of more than five percent of the Common
Stock of Concentric Network Corp.
ITEM 6. OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER
PERSON.
Not applicable, see Item 5.
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
ITEM 9. NOTICE OF DISSOLUTION OF GROUP.
Not Applicable
ITEM 10. CERTIFICATION.
Not Applicable
<PAGE>
Page 16 of 20 Pages
SIGNATURES
After reasonable inquiry and to the best of my knowledge and belief,
I certify that that information set forth in this statement is true, complete
and correct.
Date: February 12, 1999
BROOK H. BYERS KPCB VII ASSOCIATES, L.P., A CALIFORNIA
KEVIN R. COMPTON LIMITED PARTNERSHIP
L. JOHN DOERR
WILLIAM R. HEARST III
VINOD KHOSLA
E. FLOYD KVAMME
JOSEPH S. LACOB
BERNARD J. LACROUTE
JAMES P. LALLY
DOUGLAS P. MACKENZIE
<TABLE>
<S> <C>
Signature: /s/ Michael S. Curry Signature: /s/ Brook H. Byers
------------------------ ----------------------------
Michael S. Curry A General Partner
Attorney-in-Fact
KLEINER PERKINS CAUFIELD & BYERS VII,
L.P., A CALIFORNIA LIMITED PARTNERSHIP
By KPCB VII Associates, L.P., a California
Limited Partnership, its General Partner
Signature: /s/ Brook H. Byers
------------------------------
A General Partner
</TABLE>
<PAGE>
Page 17 of 20 Pages
EXHIBIT INDEX
<TABLE>
<CAPTION>
Found on
Sequentially
Exhibit Numbered Page
- ------- -------------
<S> <C>
Exhibit A: Agreement of Joint Filing 17
Exhibit B: List of General Partners of KPCB VII Associates 18
</TABLE>
<PAGE>
Page 18 of 20 Pages
EXHIBIT A
Agreement of Joint Filing
The undersigned hereby agree that they are filing jointly pursuant
to Rule 13d-1 of the Act the amended statement dated February 12, 1999,
containing the information required by Schedule 13G, for the Shares of
Concentric Network Corp., held by Kleiner Perkins Caufield & Byers VII, L.P.,
and with respect to the general partners, such other holdings as may be
reported therein.
Date: February 12, 1999
BROOK H. BYERS KPCB VII ASSOCIATES, L.P., A CALIFORNIA
KEVIN R. COMPTON LIMITED PARTNERSHIP
L. JOHN DOERR
WILLIAM R. HEARST III
VINOD KHOSLA
E. FLOYD KVAMME
JOSEPH S. LACOB
BERNARD J. LACROUTE
JAMES P. LALLY
DOUGLAS P. MACKENZIE
<TABLE>
<S> <C>
Signature: /s/ Michael S. Curry Signature: /s/ Brook H. Byers
-------------------------- -------------------------
Michael S. Curry A General Partner
Attorney-in-Fact
KLEINER PERKINS CAUFIELD & BYERS VII, L.P., A
CALIFORNIA LIMITED PARTNERSHIP
By KPCB VII Associates, L.P., a California
Limited Partnership, its
Signature: /s/ Brook H. Byers
----------------------------
A General Partner
</TABLE>
<PAGE>
Page 19 of 20 Pages
EXHIBIT B
GENERAL PARTNERS OF
KPCB VII ASSOCIATES, A CALIFORNIA LIMITED PARTNERSHIP
Set forth below, with respect to each general partner of KPCB VII
Associates, is the following: (a) name; (b) business address; and (c)
citizenship.
1. (a) Brook H. Byers
(b) c/o Kleiner Perkins Caufield & Byers
2750 Sand Hill Road
Menlo Park, CA 94025
(c) United States Citizen
2. (a) Kevin R. Compton
(b) c/o Kleiner Perkins Caufield & Byers
2750 Sand Hill Road
Menlo Park, CA 94025
(c) United States Citizen
3. (a) L. John Doerr
(b) c/o Kleiner Perkins Caufield & Byers
2750 Sand Hill Road
Menlo Park, CA 94025
(c) United States Citizen
4. (a) William R. Hearst III
(b) c/o Kleiner Perkins Caufield & Byers
2750 Sand Hill Road
Menlo Park, CA 94025
(c) United States Citizen
5. (a) Vinod Khosla
(b) c/o Kleiner Perkins Caufield & Byers
2750 Sand Hill Road
Menlo Park, CA 94025
(c) United States Citizen
6. (a) E. Floyd Kvamme
(b) c/o Kleiner Perkins Caufield & Byers
2750 Sand Hill Road
Menlo Park, CA 94025
(c) United States Citizen
7. (a) Joseph S. Lacob
(b) c/o Kleiner Perkins Caufield & Byers
2750 Sand Hill Road
Menlo Park, CA 94025
(c) United States Citizen
8. (a) Bernard J. Lacroute
(b) c/o Kleiner Perkins Caufield & Byers
2750 Sand Hill Road
Menlo Park, CA 94025
(c) United States Citizen
<PAGE>
Page 20 of 20 Pages
9. (a) James P. Lally
(b) c/o Kleiner Perkins Caufield & Byers
2750 Sand Hill Road
Menlo Park, CA 94025
(c) United States Citizen
10. (a) Douglas P. MacKenzie
(b) c/o Kleiner Perkins Caufield & Byers
2750 Sand Hill Road
Menlo Park, CA 94025
(c) United States Citizen
