<PAGE>
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, DC 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 RULE 13d-2(b)
(AMENDMENT NO. 3 )(1)
-------
ViroPharma Incorporated
- --------------------------------------------------------------------------------
(Name of Issuer)
Common Stock Par Value $0.002
- --------------------------------------------------------------------------------
(Title of Class of Securities)
928241108
- --------------------------------------------------------------------------------
(CUSIP Number)
- --------------------------------------------------------------------------------
(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)
- ------------------
(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 the disclosures provided in a prior cover page.
The information required in 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>
Cusip No. 928241108 13G Page 2 of 23 pages
1. Names of Reporting Persons
I.R.S. Identification Nos. of Above Persons (entities only.)
Oak Investment Partners VI, Limited Partnership
06-1412578
- -------------------------------------------------------------------
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 Shares (5) Sole Voting Power
Beneficially 577,139 Shares of Common Stock
Owned by ---------------------------------------
Each Reporting (6) Shared Voting Power
Person With: Not applicable
---------------------------------------
(7) Sole Dispositive Power
577,139 Shares of Common Stock
---------------------------------------
(8) Shared Dispositive Power
Not applicable
- -------------------------------------------------------------------
9. Aggregate Amount Beneficially Owned by Each Reporting Person
577,139 Shares of Common Stock
- -------------------------------------------------------------------
10. Check if the Aggregate Amount in Row (9) Excludes Certain
Shares * / /
- -------------------------------------------------------------------
11. Percent of Class Represented by Amount in Row 9
3.83%
- -------------------------------------------------------------------
12. Type of Reporting Person *
PN
- ------------------------------------------------------------------------------
* SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
Cusip No. 928241108 13G Page 3 of 23 pages
1. Names of Reporting Persons
I.R.S. Identification Nos. of Above Persons (entities only.)
Oak Associates VI, LLC
06-1412579
- -------------------------------------------------------------------
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 Shares (5) Sole Voting Power
Beneficially Not applicable
Owned by ---------------------------------------
Each Reporting (6) Shared Voting Power
Person With: 577,139 Shares of Common Stock
---------------------------------------
(7) Sole Dispositive Power
Not applicable
---------------------------------------
(8) Shared Dispositive Power
577,139 Shares of Common Stock
- -------------------------------------------------------------------
9. Aggregate Amount Beneficially Owned by Each Reporting Person
577,139 Shares of Common Stock
- -------------------------------------------------------------------
10. Check if the Aggregate Amount in Row (9) Excludes Certain
Shares * / /
- -------------------------------------------------------------------
11. Percent of Class Represented by Amount in Row 9
3.83%
- -------------------------------------------------------------------
12. Type of Reporting Person *
OO-LLC
- ------------------------------------------------------------------------------
* SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
Cusip No. 928241108 13G Page 4 of 23 pages
1. Names of Reporting Persons
I.R.S. Identification Nos. of Above Persons (entities only.)
Oak VI Affiliates Fund, Limited Partnership
06-1414970
- -------------------------------------------------------------------
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 Shares (5) Sole Voting Power
Beneficially 0 Shares of Common Stock
Owned by ---------------------------------------
Each Reporting (6) Shared Voting Power
Person With: Not applicable
---------------------------------------
(7) Sole Dispositive Power
0 Shares of Common Stock
---------------------------------------
(8) Shared Dispositive Power
Not applicable
- -------------------------------------------------------------------
9. Aggregate Amount Beneficially Owned by Each Reporting Person
0 Shares of Common Stock
- -------------------------------------------------------------------
10. Check if the Aggregate Amount in Row (9) Excludes Certain
Shares * / /
- -------------------------------------------------------------------
11. Percent of Class Represented by Amount in Row 9
0%
- -------------------------------------------------------------------
12. Type of Reporting Person *
PN
- ------------------------------------------------------------------------------
* SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
Cusip No. 928241108 13G Page 5 of 23 pages
1. Names of Reporting Persons
I.R.S. Identification Nos. of Above Persons (entities only.)
Oak VI Affiliates, LLC
06-1414968
- -------------------------------------------------------------------
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 Shares (5) Sole Voting Power
Beneficially Not applicable
Owned by ---------------------------------------
Each Reporting (6) Shared Voting Power
Person With: 0 Shares of Common Stock
---------------------------------------
(7) Sole Dispositive Power
Not applicable
---------------------------------------
(8) Shared Dispositive Power
0 Shares of Common Stock
- -------------------------------------------------------------------
9. Aggregate Amount Beneficially Owned by Each Reporting Person
0 Shares of Common Stock
- -------------------------------------------------------------------
10. Check if the Aggregate Amount in Row (9) Excludes Certain
Shares * / /
- -------------------------------------------------------------------
11. Percent of Class Represented by Amount in Row 9
0%
- -------------------------------------------------------------------
12. Type of Reporting Person *
OO-LLC
- ------------------------------------------------------------------------------
* SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
Cusip No. 928241108 13G Page 6 of 23 pages
1. Names of Reporting Persons
I.R.S. Identification Nos. of Above Persons (entities only.)
Oak Management Corporation
06-0990851
- -------------------------------------------------------------------
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 Shares (5) Sole Voting Power
Beneficially Not applicable
Owned by ---------------------------------------
Each Reporting (6) Shared Voting Power
Person With: 577,139 Shares of Common Stock
---------------------------------------
(7) Sole Dispositive Power
Not applicable
---------------------------------------
(8) Shared Dispositive Power
577,139 Shares of Common Stock
- -------------------------------------------------------------------
9. Aggregate Amount Beneficially Owned by Each Reporting Person
577,139 Shares of Common Stock
- -------------------------------------------------------------------
10. Check if the Aggregate Amount in Row (9) Excludes Certain
Shares * / /
- -------------------------------------------------------------------
11. Percent of Class Represented by Amount in Row 9
3.83%
- -------------------------------------------------------------------
12. Type of Reporting Person *
CO
- ------------------------------------------------------------------------------
* SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
Cusip No. 928241108 13G Page 7 of 23 pages
1. Names of Reporting Persons
I.R.S. Identification Nos. of Above Persons (entities only.)
Bandel L. Carano
- -------------------------------------------------------------------
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
- -------------------------------------------------------------------
Number of Shares (5) Sole Voting Power
Beneficially Not applicable
Owned by ---------------------------------------
Each Reporting (6) Shared Voting Power
Person With: 577,139 Shares of Common Stock
---------------------------------------
(7) Sole Dispositive Power
Not applicable
---------------------------------------
(8) Shared Dispositive Power
577,139 Shares of Common Stock
- -------------------------------------------------------------------
9. Aggregate Amount Beneficially Owned by Each Reporting Person
577,139 Shares of Common Stock
- -------------------------------------------------------------------
10. Check if the Aggregate Amount in Row (9) Excludes Certain
Shares * / /
- -------------------------------------------------------------------
11. Percent of Class Represented by Amount in Row 9
3.83%
- -------------------------------------------------------------------
12. Type of Reporting Person *
IN
- ------------------------------------------------------------------------------
* SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
Cusip No. 928241108 13G Page 8 of 23 pages
1. Names of Reporting Persons
I.R.S. Identification Nos. of Above Persons (entities only.)
Gerald R. Gallagher
- -------------------------------------------------------------------
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
- -------------------------------------------------------------------
Number of Shares (5) Sole Voting Power
Beneficially Not applicable
Owned by ---------------------------------------
Each Reporting (6) Shared Voting Power
Person With: 577,139 Shares of Common Stock
---------------------------------------
(7) Sole Dispositive Power
Not applicable
---------------------------------------
(8) Shared Dispositive Power
577,139 Shares of Common Stock
- -------------------------------------------------------------------
9. Aggregate Amount Beneficially Owned by Each Reporting Person
577,139 Shares of Common Stock
- -------------------------------------------------------------------
10. Check if the Aggregate Amount in Row (9) Excludes Certain
Shares * / /
- -------------------------------------------------------------------
11. Percent of Class Represented by Amount in Row 9
3.83%
- -------------------------------------------------------------------
12. Type of Reporting Person *
IN
- ------------------------------------------------------------------------------
* SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
Cusip No. 928241108 13G Page 9 of 23 pages
1. Names of Reporting Persons
I.R.S. Identification Nos. of Above Persons (entities only.)
Edward F. Glassmeyer
- -------------------------------------------------------------------
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
- -------------------------------------------------------------------
Number of Shares (5) Sole Voting Power
Beneficially Not applicable
Owned by ---------------------------------------
Each Reporting (6) Shared Voting Power
Person With: 577,139 Shares of Common Stock
---------------------------------------
(7) Sole Dispositive Power
Not applicable
---------------------------------------
(8) Shared Dispositive Power
577,139 Shares of Common Stock
- -------------------------------------------------------------------
9. Aggregate Amount Beneficially Owned by Each Reporting Person
577,139 Shares of Common Stock
- -------------------------------------------------------------------
10. Check if the Aggregate Amount in Row (9) Excludes Certain
Shares * / /
- -------------------------------------------------------------------
11. Percent of Class Represented by Amount in Row 9
3.83%
- -------------------------------------------------------------------
12. Type of Reporting Person *
IN
- ------------------------------------------------------------------------------
* SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
Cusip No. 928241108 13G Page 10 of 23 pages
1. Names of Reporting Persons
I.R.S. Identification Nos. of Above Persons (entities only.)
Fredric W. Harman
- -------------------------------------------------------------------
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
- -------------------------------------------------------------------
Number of Shares (5) Sole Voting Power
Beneficially Not applicable
Owned by ---------------------------------------
Each Reporting (6) Shared Voting Power
Person With: 577,139 Shares of Common Stock
---------------------------------------
(7) Sole Dispositive Power
Not applicable
---------------------------------------
(8) Shared Dispositive Power
577,139 Shares of Common Stock
- -------------------------------------------------------------------
9. Aggregate Amount Beneficially Owned by Each Reporting Person
577,139 Shares of Common Stock
- -------------------------------------------------------------------
10. Check if the Aggregate Amount in Row (9) Excludes Certain
Shares * / /
- -------------------------------------------------------------------
11. Percent of Class Represented by Amount in Row 9
3.83%
- -------------------------------------------------------------------
12. Type of Reporting Person *
IN
- ------------------------------------------------------------------------------
* SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
Cusip No. 928241108 13G Page 11 of 23 pages
1. Names of Reporting Persons
I.R.S. Identification Nos. of Above Persons (entities only.)
Ann H. Lamont
- -------------------------------------------------------------------
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
- -------------------------------------------------------------------
Number of Shares (5) Sole Voting Power
Beneficially Not applicable
Owned by ---------------------------------------
Each Reporting (6) Shared Voting Power
Person With: 577,139 Shares of Common Stock
---------------------------------------
(7) Sole Dispositive Power
Not applicable
---------------------------------------
(8) Shared Dispositive Power
577,139 Shares of Common Stock
- -------------------------------------------------------------------
9. Aggregate Amount Beneficially Owned by Each Reporting Person
577,139 Shares of Common Stock
- -------------------------------------------------------------------
10. Check if the Aggregate Amount in Row (9) Excludes Certain
Shares * / /
- -------------------------------------------------------------------
11. Percent of Class Represented by Amount in Row 9
3.83%
- -------------------------------------------------------------------
12. Type of Reporting Person *
IN
- ------------------------------------------------------------------------------
* SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
Cusip No. 928241108 13G Page 12 of 23 pages
1. Names of Reporting Persons
I.R.S. Identification Nos. of Above Persons (entities only.)
Eileen M. More
- -------------------------------------------------------------------
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
- -------------------------------------------------------------------
Number of Shares (5) Sole Voting Power
Beneficially Not applicable
Owned by ---------------------------------------
Each Reporting (6) Shared Voting Power
Person With: 577,139 Shares of Common Stock
---------------------------------------
(7) Sole Dispositive Power
Not applicable
---------------------------------------
(8) Shared Dispositive Power
577,139 Shares of Common Stock
- -------------------------------------------------------------------
9. Aggregate Amount Beneficially Owned by Each Reporting Person
577,139 Shares of Common Stock
- -------------------------------------------------------------------
10. Check if the Aggregate Amount in Row (9) Excludes Certain
Shares * / /
- -------------------------------------------------------------------
11. Percent of Class Represented by Amount in Row 9
3.83%
- -------------------------------------------------------------------
12. Type of Reporting Person *
IN
- ------------------------------------------------------------------------------
* SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
Page 13 of 23 pages
Schedule 13G
Amendment No. 3*
Common Stock Par Value $0.002
CUSIP No. 928241108
ITEM 1(a) NAME OF ISSUER:
ViroPharma Incorporated
ITEM 1(b) ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES:
405 Eagleview Boulevard
Exton, Pennsylvania 19341
ITEM 2(a) NAME OF PERSON FILING:
Oak Investment Partners VI, Limited Partnership
Oak Associates VI, LLC
Oak VI Affiliates Fund, Limited Partnership
Oak VI Affiliates, LLC
Oak Management Corporation
Bandel L. Carano
Gerald R. Gallagher
Edward F. Glassmeyer
Fredric W. Harman
Ann H. Lamont
Eileen M. More (as of January 1, 2000, Mr. More has ceased to be a filing
person)
ITEM 2(b) ADDRESS OF PRINCIPAL BUSINESS OFFICE OR, IF NONE, RESIDENCE:
c/o Oak Management Corporation
One Gorham Island
Westport, CT 06880
ITEM 2(c) CITIZENSHIP:
Please refer to Item 4 on each cover sheet for each filing person
ITEM 2(d) TITLE OF CLASS OF SECURITIES:
Common stock Par Value $0.002
ITEM 2(e) CUSIP NUMBER: 928241108
<PAGE>
Page 14 of 23 pages
ITEM 3 Not Applicable.
ITEM 4 OWNERSHIP.
The approximate percentages of shares of Common Stock reported as
beneficially owned by the Reporting Entities is based upon 15,049,415 shares
outstanding as of November 12, 1999, as reported in the Issuer's Quarterly
Report on Form 10-Q for the fiscal quarter ended September 30, 1999.
Please see Items 5, 6, 7, 8, 9 and 11 for each cover sheet for each filing
entity.
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 ]
ITEM 6 OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER
PERSON.
Not applicable
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 CERTIFICATIONS.
Not applicable
<PAGE>
Page 15 of 23 pages
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.
SIGNATURE:
Dated: February 14, 2000
Entities:
Oak Investment Partners VI, Limited Partnership
Oak Associates VI, LLC
Oak VI Affiliates Fund, Limited Partnership
Oak VI Affiliates, LLC
Oak Management Corporation
By: /s/ Edward F. Glassmeyer
-----------------------------------
Edward F. Glassmeyer, as
General Partner or
Managing Member or as
Attorney-in-fact for the
above-listed entities
Individuals:
Bandel L. Carano
Gerald R. Gallagher
Edward F. Glassmeyer
Fredric W. Harman
Ann H. Lamont
Eileen M. More
By: /s/ Edward F. Glassmeyer
-----------------------------------
Edward F. Glassmeyer,
Individually and as
Attorney-in-fact for the
above-listed individuals
<PAGE>
Page 16 of 23 pages
INDEX TO EXHIBITS
<TABLE>
<CAPTION>
PAGE
<S> <C> <C>
EXHIBIT A Agreement of Reporting Persons 17
EXHIBIT B Power of Attorney 18
</TABLE>
<PAGE>
Page 17 of 23 pages
EXHIBIT A
Each of the undersigned hereby agrees that Amendment No. 3 to the Schedule
13G filed on the date hereof with respect to the shares of Common Stock of
ViroPharma Incorporated has been filed on behalf of the undersigned.
SIGNATURE:
Dated February 14, 2000
Entities:
Oak Investment Partners VI, Limited Partnership
Oak Associates VI, LLC
Oak VI Affiliates Fund, Limited Partnership
Oak VI Affiliates, LLC
Oak Management Corporation
By: /s/ Edward F. Glassmeyer
-------------------------------
Edward F. Glassmeyer, as
General Partner or
Managing Member or as
Attorney-in-fact for the
above-listed entities
Individuals:
Bandel L. Carano
Gerald R. Gallagher
Edward F. Glassmeyer
Fredric W. Harman
Ann H. Lamont
Eileen M. More
By: /s/ Edward F. Glassmeyer
-------------------------------
Edward F. Glassmeyer,
Individually and as
Attorney-in-fact for the
above-listed individuals
<PAGE>
Page 18 of 23 pages
EXHIBIT B
POWER OF ATTORNEY
The undersigned hereby make, constitute and appoint each of EDWARD F.
GLASSMEYER and ANN H. LAMONT, acting jointly or individually, with full power of
substitution, the true and lawful attorney-in-fact for the undersigned, in the
undersigned's name, place and stead and on the undersigned's behalf, to
complete, execute and file with the United States Securities and Exchange
Commission (the "Commission"), a statement on Schedule 13G with respect to the
securities of any or all of the following entities:
BMJ MEDICAL MANAGEMENT, INC., a Delaware;
PULSEPOINT COMMUNICATIONS, a California corporation;
DSL.NET, INC., a Delaware corporation;
GARDEN.COM, INC., a Delaware;
INKTOMI CORPORATION, a Delaware corporation;
INTERNAP NETWORK SERVICES CORPORATION, a Washington corporation;
MEDIA METRIX, INC., a Delaware corporation;
MOBIUS MANAGEMENT SYSTEMS, INC., a Delaware corporation;
P.F. CHANG'S CHINA BISTRO, INC., a Delaware;
PIVOTAL CORPORATION, a British Columbia corporation;
PRIMUS KNOWLEDGE SOLUTIONS, INC., a Washington corporation;
QUINTUS CORPORATION, a Delaware corporation;
THESTREET.COM, INC., a Delaware corporation;
VIRATA CORPORATION, a Delaware corporation;
VIROPHARMA INCORPORATED, a Delaware corporation;
WIRELESS FACILITIES, INC., a Delaware corporation; and
ZANY BRAINY, INC., a Pennsylvania corporation;
and any and all amendments thereto pursuant to Section 13(d) of the Securities
Exchange Act of 1934, as amended, and the rules and regulations promulgated
thereunder, and any other forms, certificates, documents or instruments
(including a Joint Filing Agreement) that the attorneys-in-fact (or either of
them) deems necessary or appropriate in order to enable the undersigned to
comply with the requirements of said Section 13(d) and said rules and
regulations.
This Power of Attorney shall remain in effect for a period of two years
from the date hereof or until such earlier date as a written revocation thereof
is filed with the Commission.
Dated: February 14, 2000
<PAGE>
Page 19 of 23 pages
Oak Management Corporation
By: /s/ Edward F. Glassmeyer
-------------------------------
Name: Edward F. Glassmeyer
Title: President
Oak Investment Partners III, A Limited Partnership
By: Oak Associates III, Limited Partnership, its general partner
By: /s/ Edward F. Glassmeyer
-------------------------------
Name: Edward F. Glassmeyer
Title: Managing Member
Oak Associates III, Limited Partnership
By: /s/ Edward F. Glassmeyer
-------------------------------
Name: Edward F. Glassmeyer
Title: Managing Member
Oak Investment Partners IV, Limited Partnership
By: Oak Associates IV, LLC, its general partner
By: /s/ Edward F. Glassmeyer
-------------------------------
Name: Edward F. Glassmeyer
Title: Managing Member
Oak Associates IV, LLC
By: /s/ Edward F. Glassmeyer
-------------------------------
Name: Edward F. Glassmeyer
Title: Managing Member
Oak IV Affiliates Fund, Limited Partnership
By: Oak IV Affiliates, its general partner
By: /s/ Edward F. Glassmeyer
-------------------------------
Name: Edward F. Glassmeyer
Title: Managing Member
<PAGE>
Page 20 of 23 pages
Oak IV Affiliates
By: /s/ Edward F. Glassmeyer
-------------------------------
Name: Edward F. Glassmeyer
Title: Managing Member
Oak Investment Partners V, Limited Partnership
By: Oak Associates V, LLC, its general partner
By: /s/ Edward F. Glassmeyer
-------------------------------
Name: Edward F. Glassmeyer
Title: Managing Member
Oak Associates V, LLC
By: /s/ Edward F. Glassmeyer
-------------------------------
Name: Edward F. Glassmeyer
Title: Managing Member
Oak V Affiliates Fund, Limited Partnership
By: Oak V Affiliates, its general partner
By: /s/ Edward F. Glassmeyer
-------------------------------
Name: Edward F. Glassmeyer
Title: Managing Member
Oak V Affiliates
By: /s/ Edward F. Glassmeyer
-------------------------------
Name: Edward F. Glassmeyer
Title: Managing Member
Oak Investment Partners VI, Limited Partnership
By: /s/ Edward F. Glassmeyer
-------------------------------
Name: Edward F. Glassmeyer
Title: Managing Member
<PAGE>
Page 21 of 23 pages
Oak Associates VI, LLC
By: /s/ Edward F. Glassmeyer
-------------------------------
Name: Edward F. Glassmeyer
Title: Managing Member
Oak VI Affiliates Fund, Limited Partnership
By: Oak VI Affiliates, LLC
By: /s/ Edward F. Glassmeyer
-------------------------------
Name: Edward F. Glassmeyer
Title: Managing Member
Oak VI Affiliates, LLC
By: /s/ Edward F. Glassmeyer
-------------------------------
Name: Edward F. Glassmeyer
Title: Managing Member
Oak Investment Partners VII, Limited Partnership
By: Oak Associates VII, LLC, its general partner
By: /s/ Edward F. Glassmeyer
-------------------------------
Name: Edward F. Glassmeyer
Title: Managing Member
Oak Associates VII, LLC
By: /s/ Edward F. Glassmeyer
-------------------------------
Name: Edward F. Glassmeyer
Title: Managing Member
Oak VII Affiliates Fund, Limited Partnership
By: Oak VII Affiliates, LLC, its general partner
By: /s/ Edward F. Glassmeyer
-------------------------------
Name: Edward F. Glassmeyer
Title: Managing Member
<PAGE>
Page 22 of 23 pages
Oak VII Affiliates, LLC
By: /s/ Edward F. Glassmeyer
-------------------------------
Name: Edward F. Glassmeyer
Title: Managing Member
Oak Investment Partners VIII, Limited Partnership
By: Oak Associates VIII, LLC, its general partner
By: /s/ Edward F. Glassmeyer
-------------------------------
Name: Edward F. Glassmeyer
Title: Managing Member
Oak Associates VIII, LLC
By: /s/ Edward F. Glassmeyer
-------------------------------
Name: Edward F. Glassmeyer
Title: Managing Member
Oak VIII Affiliates Fund, Limited Partnership
By: Oak VIII Affiliates, LLC, its general partner
By: /s/ Edward F. Glassmeyer
-------------------------------
Name: Edward F. Glassmeyer
Title: Managing Member
Oak VIII Affiliates, LLC
By: /s/ Edward F. Glassmeyer
-------------------------------
Name: Edward F. Glassmeyer
Title: Managing Member
<PAGE>
Page 23 of 23 pages
/s/ Bandel L. Carano
-------------------------------
Bandel L. Carano
/s/ Gerald R. Gallagher
-------------------------------
Gerald R. Gallagher
/s/ Edward F. Glassmeyer
-------------------------------
Edward F. Glassmeyer
/s/ Fredric W. Harman
-------------------------------
Fredric W. Harman
/s/ Ann H. Lamont
-------------------------------
Ann H. Lamont
/s/ Eileen M. More
-------------------------------
Eileen M. More
