UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
Under the Securities Exchange Act of 1934
(Amendment No. 7)*
ISIS PHARMACEUTICALS, INC.
- --------------------------------------------------------------------------------
(Name of Issuer)
Common Stock
- --------------------------------------------------------------------------------
(Title of Class of Securities)
4643300109
- --------------------------------------------------------------------------------
(CUSIP Number)
December 31, 1998
- --------------------------------------------------------------------------------
(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 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>
CUSIP No. 464330109 13G 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 ---------------------------------------------
REPORTING 7 SOLE DISPOSITIVE POWER
PERSON
WITH 759,566 shs.
---------------------------------------------
8 SHARED DISPOSITIVE POWER
-0-
- --------------------------------------------------------------------------------
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
2.80%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
PN
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
Page 2 of 16 Pages
<PAGE>
CUSIP No. 464330109 13G 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")*
13-3174240
- --------------------------------------------------------------------------------
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 ---------------------------------------------
REPORTING 7 SOLE DISPOSITIVE POWER
PERSON
WITH 759,566 shs.
---------------------------------------------
8 SHARED DISPOSITIVE POWER
-0-
- --------------------------------------------------------------------------------
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
2.80%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
PN
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
Page 3 of 16 Pages
<PAGE>
CUSIP No. 464330109 13G 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 ---------------------------------------------
REPORTING 7 SOLE DISPOSITIVE POWER
PERSON
WITH 770,124 shs.
---------------------------------------------
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
2.90%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
PN
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
Page 4 of 16 Pages
<PAGE>
CUSIP No. 464330109 13G 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")*
11-3197696
- --------------------------------------------------------------------------------
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 ---------------------------------------------
REPORTING 7 SOLE DISPOSITIVE POWER
PERSON
WITH 770,124 shs.
---------------------------------------------
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
2.90%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
PN
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
Page 5 of 16 Pages
<PAGE>
CUSIP No. 464330109 13G Page 6 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 ---------------------------------------------
REPORTING 7 SOLE DISPOSITIVE POWER
PERSON
WITH 74,073 shs.
---------------------------------------------
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
0.27%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
IN
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
Page 6 of 16 Pages
<PAGE>
CUSIP No. 464330109 13G Page 7 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
9,217 shs.
NUMBER OF ---------------------------------------------
SHARES 6 SHARED VOTING POWER
BENEFICIALLY
OWNED BY -0-
EACH ---------------------------------------------
REPORTING 7 SOLE DISPOSITIVE POWER
PERSON
WITH 9,217 shs.
---------------------------------------------
8 SHARED DISPOSITIVE POWER
-0-
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
9,217 shs.
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN
SHARES*
- --------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
0.03%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
IN
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
Page 7 of 16 Pages
<PAGE>
CUSIP No. 464330109 13G Page 8 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
105,059 shs.
NUMBER OF ---------------------------------------------
SHARES 6 SHARED VOTING POWER
BENEFICIALLY
OWNED BY -0-
EACH ---------------------------------------------
REPORTING 7 SOLE DISPOSITIVE POWER
PERSON
WITH 105,059 shs.
---------------------------------------------
8 SHARED DISPOSITIVE POWER
-0-
- --------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
105,059 shs.
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN
SHARES*
- --------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
0.40%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
IN
- --------------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
Page 8 of 16 Pages
<PAGE>
CUSIP No. 464330109 13G Page 9 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 ---------------------------------------------
REPORTING 7 SOLE DISPOSITIVE POWER
PERSON
WITH 34,545 shs.
---------------------------------------------
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 9 of 16 Pages
<PAGE>
CUSIP No. 464330109 13G Page 10 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
157,546 shs.
NUMBER OF ---------- -----------------------------------
SHARES 6 SHARED VOTING POWER
BENEFICIALLY
OWNED BY -0-
EACH ---------- -----------------------------------
REPORTING 7 SOLE DISPOSITIVE POWER
PERSON
WITH 157,546 shs.
---------- -----------------------------------
8 SHARED DISPOSITIVE POWER
-0-
- ------------ -------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
157,546 shs.
- ------------ -------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN
SHARES*
- ------------ -------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
0.60%
- ------------ -------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
IN
- ------------ -------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
Page 10 of 16 Pages
<PAGE>
CUSIP No. 464330109 13G Page 11 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
589 shs.
NUMBER OF ---------- -----------------------------------
SHARES 6 SHARED VOTING POWER
BENEFICIALLY
OWNED BY -0-
EACH ---------- -----------------------------------
REPORTING 7 SOLE DISPOSITIVE POWER
PERSON
WITH 589 shs.
---------- -----------------------------------
8 SHARED DISPOSITIVE POWER
-0-
- ------------ -------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
589 shs.
- ------------ -------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN
SHARES*
- ------------ -------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
0.002%
- ------------ -------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
IN
- ------------ -------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!
Page 11 of 16 Pages
<PAGE>
CUSIP No. 464330109 13G Page 12 of 16 Pages
--------- ---- ----
- ------------ -------------------------------------------------------------------
1 NAME OF REPORTING PERSON
S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
DAVID J. COWAN
###-##-####
- ------------ -------------------------------------------------------------------
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
1,147 shs.
NUMBER OF ---------- -----------------------------------
SHARES 6 SHARED VOTING POWER
BENEFICIALLY
OWNED BY -0-
EACH ---------- -----------------------------------
REPORTING 7 SOLE DISPOSITIVE POWER
PERSON
WITH 1,147 shs.
---------- -----------------------------------
8 SHARED DISPOSITIVE POWER
-0-
- ------------ -------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
1,147 shs.
- ------------ -------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN
SHARES*
- ------------ -------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
0.004%
- ------------ -------------------------------------------------------------------
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 Partners III L.P. (collectively referred to as "Bessemer"),
both Delaware limited partnerships having their principal office at 1400 Old
Country Road, Suite 407, 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
limited liability company whose members are Neill H. Brownstein*, Robert H.
Buescher, William T. Burgin, G. Felda Hardymon and Christopher Gabrieli, and by
Deer III & Co. LLC, a Delaware limited liability company whose members 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. 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 535 Middlefield Road, Suite 245, Menlo Park,
California 94025 and at 83 Walnut Street, Wellesley Hills, Massachusetts
02181-2101. Mr. Brownstein's and Mr. Cowan's principal business address is the
Menlo Park address. Mr. Buescher's principal business address 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 member of
Deer II and Deer III with no power to participate in the management of its
affairs.
** As of August 1, 1996, Mr. Barach became a special member of Deer III with no
power to participate in the management of its affairs.
(d) Title of Class of Securities:
Common Stock
(e) CUSIP Number:
4643300109
Page 13 of 16 Pages
<PAGE>
Item 3. If this statement is filed pursuant to Rule 13d-1(b), or 13d-2(b) or
(c), check whether the person filing is a:
Not applicable
Item 4. Ownership as of December 31, 1995
Items 5 through 9 of Pages 2 through 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 10. Certification
Not applicable.
SIGNATURES
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 10, 1999
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
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
Page 16 of 16 Pages
