-------------------------------
OMB APPROVAL
-------------------------------
OMB Number: 3235-0145
Expires: December 31, 1997
Estimated average burden
hours per response......14.90
-------------------------------
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
Under the Securities Exchange Act of 1934
(Amendment No. 5)*
ISIS PHARMACEUTICALS, INC.
- --------------------------------------------------------------------------------
(Name of Issuer)
Common Stock
- --------------------------------------------------------------------------------
(Title of Class of Securities)
464330 0 10 9
- --------------------------------------------------------------------------------
(CUSIP Number)
Check the following box if a fee is being paid with this statement |_|. (A fee
is not required only if the filing person: (1) has a previous statement on file
reporting beneficial ownership of more than five percent of the class of
securities described in Item 1; and (2) has filed no amendment subsequent
thereto reporting beneficial ownership of five percent or less of such class.)
(See Rule 13d-7).
*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 1 of 16 Pages
<PAGE>
Page 2 of 16 Pages
-------- ---------
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSON
S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
BESSEMER VENTURE PARTNERS II L.P. ("Bessemer II")
13-3174238
- --------------------------------------------------------------------------------
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
(a) X
(b)
- --------------------------------------------------------------------------------
3 SEC USE ONLY
- --------------------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
- --------------------------------------------------------------------------------
5 SOLE VOTING POWER
759,566 shs.
NUMBER OF
---------------------------------------------
SHARES 6 SHARED VOTING POWER
BENEFICIALLY
OWNED BY -0- shs.
---------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 759,566 shs.
---------------------------------------------
WITH 8 SHARED DISPOSITIVE POWER
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
759,566 shs.
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
- --------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
2.96%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
PN
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
Page 2 of 16 Pages
<PAGE>
Page 3 of 16 Pages
-------- ---------
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSON
S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
DEER II & CO. LLC ("Deer II") (Deer II is the General Partner of
13-3174240 Bessemer II. Therefore, the shares
reported on this page are the same
as those reported on p.2)
- --------------------------------------------------------------------------------
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
(a) X
(b)
- --------------------------------------------------------------------------------
3 SEC USE ONLY
- --------------------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
- --------------------------------------------------------------------------------
5 SOLE VOTING POWER
759,566 shs.
NUMBER OF
---------------------------------------------
SHARES 6 SHARED VOTING POWER
BENEFICIALLY
OWNED BY -0- shs.
---------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 759, 566 shs.
---------------------------------------------
WITH 8 SHARED DISPOSITIVE POWER
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
759,566 shs.
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
- --------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
2.96%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
PN
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
Page 3 of 16 Pages
<PAGE>
Page 4 of 16 Pages
-------- ---------
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSON
S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
BESSEMER VENTURE PARTNERS III L.P. ("Bessemer III")
11-3197697
- --------------------------------------------------------------------------------
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
(a) X
(b)
- --------------------------------------------------------------------------------
3 SEC USE ONLY
- --------------------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
- --------------------------------------------------------------------------------
5 SOLE VOTING POWER
770,124 shs.
NUMBER OF
---------------------------------------------
SHARES 6 SHARED VOTING POWER
BENEFICIALLY
OWNED BY -0- shs.
---------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 770,124 shs.
---------------------------------------------
WITH 8 SHARED DISPOSITIVE POWER
-0- shs.
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
770,124 shs.
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
- --------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
3.00%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
PN
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
Page 4 of 16 Pages
<PAGE>
Page 5 of 16 Pages
-------- ---------
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSON
S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
DEER III & CO. LLC ("Deer III") (Deer III is the General Partner
11-3197696 of Bessemer III. Therefore, the
shares reported on this page are
the same as those reported on p.4)
- --------------------------------------------------------------------------------
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
(a) X
(b)
- --------------------------------------------------------------------------------
3 SEC USE ONLY
- --------------------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
- --------------------------------------------------------------------------------
5 SOLE VOTING POWER
770,124 shs.
NUMBER OF
---------------------------------------------
SHARES 6 SHARED VOTING POWER
BENEFICIALLY
OWNED BY -0- shs.
---------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 770,124 shs.
---------------------------------------------
WITH 8 SHARED DISPOSITIVE POWER
-0- shs.
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
770,124 shs.
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
- --------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
3.00%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
PN
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
Page 5 of 16 Pages
<PAGE>
Page 6 of 16 Pages
-------- ---------
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSON
S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
BESSEMER VENTURES, INC. ("BVI")
13-3175227
- --------------------------------------------------------------------------------
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-
NUMBER OF
---------------------------------------------
SHARES 6 SHARED VOTING POWER
BENEFICIALLY
OWNED BY -0-
---------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON -0-
---------------------------------------------
WITH 8 SHARED DISPOSITIVE POWER
-0-
- --------------------------------------------------------------------------------
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
0.00%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
CP
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
Page 6 of 16 Pages
<PAGE>
Page 7 of 16 Pages
-------- ---------
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSON
S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
NEILL H. BROWNSTEIN
###-##-####
- --------------------------------------------------------------------------------
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.A.
- --------------------------------------------------------------------------------
5 SOLE VOTING POWER
74,073 shs.
NUMBER OF
---------------------------------------------
SHARES 6 SHARED VOTING POWER
BENEFICIALLY
OWNED BY -0-
---------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 74,073 shs.
---------------------------------------------
WITH 8 SHARED DISPOSITIVE POWER
-0-
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
74,073 shs.
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
- --------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
0.29%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
IN
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
Page 7 of 16 Pages
<PAGE>
Page 8 of 16 Pages
-------- ---------
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSON
S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
ROBERT H. BUESCHER
###-##-####
- --------------------------------------------------------------------------------
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.A.
- --------------------------------------------------------------------------------
5 SOLE VOTING POWER
9,666 shs.
NUMBER OF
---------------------------------------------
SHARES 6 SHARED VOTING POWER
BENEFICIALLY
OWNED BY -0-
---------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 9,666 shs.
---------------------------------------------
WITH 8 SHARED DISPOSITIVE POWER
-0-
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9,666 shs.
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
0.04%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
IN
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
Page 8 of 16 Pages
<PAGE>
Page 9 of 16 Pages
-------- ---------
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSON
S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
WILLIAM T. BURGIN
###-##-####
- --------------------------------------------------------------------------------
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.A.
- --------------------------------------------------------------------------------
5 SOLE VOTING POWER
104,859 shs.
NUMBER OF
---------------------------------------------
SHARES 6 SHARED VOTING POWER
BENEFICIALLY
OWNED BY -0-
---------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 104,859 shs.
---------------------------------------------
WITH 8 SHARED DISPOSITIVE POWER
-0-
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
104,859 shs.
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
- --------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
0.41%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
IN
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
Page 9 of 16 Pages
<PAGE>
Page 10 of 16 Pages
---------- ---------
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSON
S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
G. FELDA HARDYMON
###-##-####
- --------------------------------------------------------------------------------
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.A.
- --------------------------------------------------------------------------------
5 SOLE VOTING POWER
34,545 shs.
NUMBER OF
---------------------------------------------
SHARES 6 SHARED VOTING POWER
BENEFICIALLY
OWNED BY -0-
---------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 34,545 shs.
---------------------------------------------
WITH 8 SHARED DISPOSITIVE POWER
-0-
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
34,545 shs.
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
- --------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
0.13%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
IN
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
Page 10 of 16 Pages
<PAGE>
Page 11 of 16 Pages
--------- ---------
- ------------ -------------------------------------------------------------------
1 NAME OF REPORTING PERSON
S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
CHRISTOPHER F.O. GABRIELI
###-##-####
- ------------ -------------------------------------------------------------------
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.A.
- ------------ -------------------------------------------------------------------
5 SOLE VOTING POWER
163,062 shs.
NUMBER OF
---------- -----------------------------------
SHARES 6 SHARED VOTING POWER
BENEFICIALLY
OWNED BY -0-
---------- -----------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 163,062 shs.
---------- -----------------------------------
WITH 8 SHARED DISPOSITIVE POWER
-0-
- ------------ -------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
163,062 shs.
- ------------ -------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
- ------------ -------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
0.63%
- ------------ -------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
IN
- ------------ -------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
Page 11 of 16 Pages
<PAGE>
Page 12 of 16 Pages
--------- ---------
- ------------ -------------------------------------------------------------------
1 NAME OF REPORTING PERSON
S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
MICHAEL I. BARACH
###-##-####
- ------------ -------------------------------------------------------------------
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.A.
- ------------ -------------------------------------------------------------------
5 SOLE VOTING POWER
1,449 shs.
NUMBER OF
---------- -----------------------------------
SHARES 6 SHARED VOTING POWER
BENEFICIALLY
OWNED BY -0-
---------- -----------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
PERSON 1,449 shs.
---------- -----------------------------------
WITH 8 SHARED DISPOSITIVE POWER
-0-
- ------------ -------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
1,449 shs.
- ------------ -------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
- ------------ -------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
0.006%
- ------------ -------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
IN
- ------------ -------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
Page 12 of 16 Pages
<PAGE>
Item 1.
(a) Name of Issuer:
ISIS Pharmaceuticals, Inc.
(b) Address of Issuer's Principal Executive Office:
2280 B Faraday Avenue
Carlsbad, California 92008
Item 2.
(a), (b) and (c) Name of Persons Filing, Address of Principal Business
Office and Citizenship:
This statement is filed by Bessemer Venture Partners II L.P.
and Bessemer Venture Parnters III L.P. (collectively referred to as "Bessemer"),
both Delaware limited partnerships having their principal office at 1025 Old
Country Road, Suite 205, Westbury, New York, 11590. Bessemer's principal
business is making venture capital investments for its own account and is
carried on at its principal office.
This statement is also filed by Deer II & Co. LLC, a Delaware general
partnership whose partners are Neill H. Brownstein, Robert H. Buescher, William
T. Burgin, G. Felda Hardymon and Christopher Gabrieli, and by Deer III & Co.
LLC, a Delaware general partnership whose partners are Neill Brownstein*, Robert
H. Buescher, William T. Burgin, G. Felda Hardymon, Christopher F.O. Gabrieli,
Michael I. Barach and David J. Cowan. All of such individuals are United States
citizens. This statement is also filed by each of such individuals (except David
J. Cowan). Deer II & Co. LLC and Deer III & Co. LLC are, respectively, the
General Partners of Bessemer Venture Partners II L.P. and Bessemer Venture
Partners III L.P. and have their principal offices at the same address as
Bessemer. The principal business of Deer II & Co. LLC and Deer III & Co. LLC is
making venture capital investments for the account of Bessemer and is carried on
at their principal offices, at 3000 Sand Hill Road, Menlo Park, CA 94025 and at
83 Walnut Street, Wellesley Hills, MA 02181-2101. Mr. Brownstein's and Mr.
Cowan's principal business address is the Menlo Park address. Mr. Buescher's is
the principal office of Bessemer. Mr. Burgin's Mr. Hardymon's, Mr. Gabrieli's
and Mr. Barach's principal business address is the Wellesley Hills address.
*As of January 1, 1995 Mr. Brownstein became a Special General Partner of
Bessemer III with no power to participate in the management of its affairs.
This statement is also filed by Bessemer Ventures, Inc.
("BVI"), a Delaware corporation which is the principal limited partner of
Bessemer and whose principal business office is at 630 Fifth Avenue, New York,
NY 10111. BVI is a wholly-owned subsidiary of Bessemer Securities Corporation, a
Delaware corporation and a privately-held investment company, whose principal
business address is the same as BVI's.
(d) Title of Class of Securities:
Common Stock
Page 13 of 16 Pages
<PAGE>
(e) CUSIP Number:
464330 0 10 9
Item 3. If this statement is filed pursuant to Rule 13d-1(b), or 13d-2(b), check
whether the person filing is a:
Not Applicable
Item 4. Ownership as of December 31, 1995
Items 5 through 9 and Pages 2-12 of this Statement
incorporated herein by reference.
Item 5. Ownership of Five Percent or Less of a Class
Not applicable.
Item 6. Ownership of More than Five Percent on Behalf of Another Person
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
See the answer to Item 2(a), (b) and (c).
Item 9. Notice of Dissolution of Group
Not applicable.
Page 14 of 16 Pages
<PAGE>
Item I0. Certification
After reasonable inquiry and to the best of our knowledge and
belief, we certify that the information set forth in this statement is true,
complete and correct.
Dated: February 12, 1997
BESSEMER VENTURE PARTNERS II L.P.
By: Deer II & Co. LLC, General Partner
By: /s/ Robert H. Buescher
-----------------------------------------
Robert H. Buescher, Manager
DEER II & Co. LLC
By: /s/ Robert H. Buescher
-----------------------------------------
Robert H. Buescher, Manager
BESSEMER VENTURE PARTNERS III L.P.
By: Deer III & Co. LLC, General Partner
By: /s/ Robert H. Buescher
-----------------------------------------
Robert H. Buescher, Manager
DEER III & Co. LLC
By: /s/ Robert H. Buescher
-----------------------------------------
Robert H. Buescher, Manager
BESSEMER VENTURES, INC.
By: *
-----------------------------------------
Robert H. Buescher, Attorney-in-Fact
NEILL H. BROWNSTEIN
By: *
-----------------------------------------
Robert H. Buescher, Attorney-in-Fact
Page 15 of 16 Pages
<PAGE>
WILLIAM T. BURGIN
By: *
-----------------------------------------
Robert H. Buescher, Attorney-in-Fact
G. FELDA HARDYMON
By: *
-----------------------------------------
Robert H. Buescher, Attorney-in-Fact
CHRISTOPHER F.O. GABRIELI
By: *
-----------------------------------------
Robert H. Buescher, Attorney-in-Fact
MICHAEL I. BARACH
By: *
-----------------------------------------
Robert H. Buescher, Attorney-in-Fact
/s/ Robert H. Buescher
-----------------------------------------
Robert H. Buescher for himself and as
Attorney-in-Fact for the above parties
having an asterisk (*) above their
signature line
