Document:

<PAGE>   1
                                                                     EXHIBIT 4.2

                           SECOND AMENDED AND RESTATED
                       FIRST REFUSAL AND CO-SALE AGREEMENT

       THIS SECOND AMENDED AND RESTATED FIRST REFUSAL AND CO-SALE AGREEMENT is
made as of December 22, 1999, by and among Webridge, Inc., a Delaware
corporation (the "Company"), the founders listed on Exhibit A (each a "Founder"
and collectively the "Founders"), and the investors in the Company's Preferred
Stock listed on Exhibit A (the "Investors");

       WHEREAS, the Company and certain Investors are parties to the Series A
Preferred Stock Purchase Agreement dated as of August 25, 1997 (the "Series A
Agreement"); pursuant to which the Investors have purchased shares of the
Company's Series A Preferred Stock;

       WHEREAS, the Company and certain Investors are parties to the Series B
Preferred Stock Purchase Agreement dated as of December 24, 1998 (the "Series B
Agreement"); pursuant to which the Investors have purchased shares of the
Company's Series B Preferred Stock;

       WHEREAS, the Company and certain Investors are parties to the Series C
Preferred Stock Purchase Agreement of even date herewith (the "Series C
Agreement"), pursuant to which those Investors are purchasing shares of the
Company's Series C Preferred Stock (the Series A Preferred Stock, the Series B
Preferred Stock and the Series C Preferred Stock are referred to collectively
herein as the "Preferred Stock");

        WHEREAS, the Company and certain Investors and the Founders are parties
to a First Refusal and Co-Sale Agreement dated as of August 25, 1997 that was
amended by the Amended and Restated First Refusal and Co-Sale Agreement dated
December 24, 1998 (the "Prior Agreement"), and wish to amend and restate the
Prior Agreement in its entirety;

       WHEREAS, the Founders are the beneficial owners of the number of shares
of Common Stock and Preferred Stock of the Company set forth opposite their
names on Exhibit A (the "Stock," which term shall also include any additional
shares of Common Stock and/or Preferred Stock of the Company, or securities
convertible into or exchangeable for such shares, now owned or hereafter
acquired by the Founders); and

       WHEREAS, the Founders wish to provide a further inducement to the
Investors to purchase shares of the Company's Series C Preferred Stock pursuant
to the terms of the Series C Agreement;

        NOW, THEREFORE, THE PARTIES HEREBY AGREE AS FOLLOWS:

                                    ARTICLE I

                             RIGHT OF FIRST REFUSAL

                                       1
<PAGE>   2

       1.1 Grant. The Company and the Investors are hereby each granted a right
of first refusal with respect to any proposed disposition of Stock by the
Founders (or any permitted transferee of the Stock under paragraph 3.1 hereof,
hereafter collectively included in all references to "Founders"), in the
following order of priority: The Company shall have the first right to purchase
any Stock proposed to be transferred to a third party by the Founders. In the
event the Company elects not to exercise its first refusal rights with respect
to all or any portion of such proposed transfer, the Company agrees to waive
such rights with respect to such portion in favor of the Investors' first
refusal and co-sale rights under this Agreement.

       1.2 Notice of Intended Disposition. In the event a Founder desires to
accept a bona fide third-party offer for the transfer of any or all of the Stock
(such Founder to be hereafter called the "Selling Founder" and the shares
subject to such offer to be hereafter called the "Target Shares"), the Selling
Founder shall promptly deliver to the Company and the Investors written notice
of the intended disposition ("Disposition Notice") and the basic terms and
conditions thereof, including the identity of the proposed purchaser.

       1.3 Exercise of Right by Company. The Company shall, for a period of
fifteen (15) days following receipt of the Disposition Notice, have the right to
repurchase all or any portion of the Target Shares upon the same terms and
conditions specified in the Disposition Notice, subject to the following
conditions. Such right shall be exercisable by written notice (the "Exercise
Notice") delivered to the Selling Founder and the Investors prior to the
expiration of the fifteen (15) day exercise period. If such right is exercised
with respect to all the Target Shares specified in the Disposition Notice, then
the Company shall effect the repurchase of such Target Shares, including payment
of the purchase price, not more than five (5) business days after the delivery
of the Exercise Notice. At such time, the Selling Founder shall deliver to the
Company the certificates representing the Target Shares to be repurchased, each
certificate to be properly endorsed for transfer. Alternatively, if such right
is exercised with respect to only a portion of the Target Shares specified in
the Disposition Notice, the Company shall notify the Investors of its intent to
repurchase only a portion of the Target Shares within the fifteen (15) day
exercise period above defined. The Company's repurchase of such Target Shares
shall be consummated at the time of the Investors' exercise of its repurchase
rights in accordance with paragraph 1.5 herein. In the event the Investors do
not elect to repurchase any of the remaining Target Shares, the Company's
repurchase of that portion of the Target Shares that the Company desires to
repurchase shall be consummated not more than five (5) business days after date
of expiration of the Investors' first refusal right.

       Should the purchase price specified in the Disposition Notice be payable
in property other than cash or evidences of indebtedness, the Company shall have
the right to pay the purchase price in the form of cash equal in amount to the
value of such property. If the Selling Founder and the Company cannot agree on
such cash value within ten (10) days after the Company's receipt of the
Disposition Notice, the valuation shall be made by an appraiser of recognized
standing selected by the Selling Founder and the Company or, if they cannot
agree on an appraiser within twenty (20) days after the Company's receipt of the
Disposition Notice, each shall select an appraiser of recognized standing and
the two appraisers shall designate a third appraiser of recognized standing,
whose appraisal shall be determinative of such value. The cost of such appraisal
shall be shared equally by the Selling Founder and the Company.

                                       2
<PAGE>   3

The closing shall then be held on the later of (i) the fifth business day
following the delivery of the Exercise Notice, or (ii) the fifth business day
after such cash valuation shall have been made.

       1.4 Non-Exercise of Right. In the event the Exercise Notice is not given
by the Company to the Selling Founder and the Investors within fifteen (15) days
following the date of the Company's receipt of the Disposition Notice, the
Company shall be deemed to have waived its right of first refusal.

       1.5 Exercise of Right by the Investors. Subject to the rights of the
Company, the Investors shall, for a period of the shorter of (i) thirty (30)
days from receipt of the Disposition Notice or (ii) fifteen (15) days from
receipt of written notice of the Company's election either to waive its right of
first refusal or to repurchase only a portion of the Target Shares have the
right to purchase all, or any portion of the remaining balance after the
Company's repurchase, of the Target Shares, upon the terms and conditions
specified in the Disposition Notice. The Investors shall exercise this right of
first refusal in the same manner and subject to the same rights and conditions
as the Company, as more specifically set forth in paragraph 1.3 above. To the
extent that the Target Shares need to be allocated among the Investors, they
shall be allocated based on the holdings of Common Stock (assuming the
conversion of all outstanding shares of Preferred Stock) of each Investor that
desires to exercise the right of first refusal.

       1.6 Non-Exercise of Right. Subject to the Investors' co-sale rights
described in Article II below, in the event the Exercise Notice with respect to
any portion of the Target Shares is not given to the Selling Founder within
sixty (60) days following the date of the Company's and the Investors' receipt
of the Disposition Notice, the Selling Founder shall have a period of thirty
(30) days thereafter in which to sell the portion of the Target Shares that
neither the Company nor the Investors have elected to purchase upon terms and
conditions (including the purchase price) no more favorable to the third-party
transferee than those specified in the Disposition Notice. The third-party
transferee shall acquire the Target Shares free and clear of subsequent rights
of first refusal under this section. In the event the Selling Founder does not
notify the Investors or consummate the sale or disposition of the Target Shares
within the sixty (60) day period, the Company's and the Investors' first refusal
rights shall continue to be applicable to any subsequent disposition of the
Target Shares by the Selling Founder until such right lapses in accordance with
paragraph 6.1 herein.

                                   ARTICLE II

                      CO-SALE RIGHTS IN SALES BY A FOUNDER

       2.1 Notice of Offer. The provisions of paragraph 1.2 requiring the
Selling Founder to give notice of any intended transfer of the Stock are
incorporated in this Article.

       2.2 Grant of Co-Sale Rights. If the Selling Founder proposes to enter
into a transaction regarding the sale of Common Stock, the Investors shall have
the right, exercisable upon written notice to the Selling Founder within thirty
(30) days after receipt of the Selling Founder's Disposition Notice, to
participate in such sale of the Target Stock on the same terms

                                       3
<PAGE>   4

and conditions as those set forth in the Disposition Notice. To the extent the
Investors exercise such right of participation, the number of shares of Target
Stock that the Selling Founder may sell in the transaction shall be
correspondingly reduced. The right of participation of the Investors shall be
subject to the terms and conditions set forth in this Section.

               (a) Each Investor shall be deemed to own the number of shares of
Common Stock that such Investor actually holds plus the number of shares of
Common Stock that are issuable upon conversion of any shares of Preferred Stock
then held by such Investor.

               (b) Each Investor may sell all or any part of a number of shares
of Common Stock of the Company equal to the product obtained by multiplying (i)
the aggregate number of shares of Common Stock covered by the purchase offer by
(ii) a fraction, the numerator of which is the number of shares of Common Stock
of the Company at the time owned by such Investor and the denominator of which
is the combined number of shares of Common Stock of the Company at the time
owned by the Selling Founder and all of the Investors.

               (c) Each Investor may effect its participation in the sale by
delivering to the Selling Founder for transfer to the purchase offeror one or
more certificates, properly endorsed for transfer, which represent:

                  (i) the number of shares of Common Stock that it elects to
sell pursuant to this paragraph 2.2; or

                  (ii) that number of shares of Preferred Stock that is at such
time convertible into the number of shares of Common Stock that it has elected
to sell pursuant to this paragraph 2.2; provided, however, that if the purchase
offeror objects to the delivery of Preferred Stock in lieu of Common Stock, such
Investor may convert and deliver Common Stock as provided in subparagraph (i)
above.

        2.3 Payment of Proceeds. The stock certificates that the Investors
deliver to the Selling Founder pursuant to paragraph 2.2 shall be transferred by
the Selling Founder to the purchase offeror in consummation of the sale of the
Common Stock pursuant to the terms and conditions specified in the paragraph 2.1
notice to the Investors, and the Selling Founder shall promptly thereafter remit
to the Investors that portion of the sale proceeds to which the Investors are
entitled by reason of their participation in such sale.

        2.4 Non-exercise. The exercise or non-exercise of the rights of the
Investors hereunder to participate in one or more sales of Common Stock made by
the Selling Founder shall not adversely affect their rights to participate in
subsequent Common Stock sales by the Selling Founder.

                                   ARTICLE III

                                EXEMPT TRANSFERS

                                       4
<PAGE>   5

       3.1 Permitted Transactions. Notwithstanding the foregoing, the first
refusal rights of the Company and the Investors and the co-sale right of the
Investors shall not apply to any transfer to the ancestors, descendants,
siblings or spouse of the Selling Founder or to trusts for the benefit of such
persons; provided that the transferee shall furnish the Investors and the
Company with a written agreement to be bound by and comply with all provisions
of this Agreement. Such transferred Stock shall remain "Stock" hereunder, and
such transferee shall be treated as a "Founder" for the purposes of this
Agreement.

       3.2 Company Repurchase or Public Offering. The provisions of this
Agreement shall not apply to the sale of any Stock (i) to the public pursuant to
a registration statement filed with, and declared effective by, the Securities
and Exchange Commission under the Securities Act of 1933, as amended (the
"Securities Act") or (ii) to the Company.

                                   ARTICLE IV

                              PROHIBITED TRANSFERS

       4.1 Grant. In the event the Selling Founder should sell any Stock of the
Company in contravention of the participation rights of the Investors under this
Agreement (a "Prohibited Transfer"), then, in addition to all other rights the
Investors may have in law or equity or by contract, the Investors shall have the
put option provided in paragraph 4.2.

        4.2 Put Option. In the event of a Prohibited Transfer, the Investors
shall have the option to sell to the Selling Founder a number of shares of
Common Stock of the Company (either directly or through delivery of Preferred
Stock) equal to the number of shares that the Investors would have been entitled
to sell had such Prohibited Transfer been effected in accordance with Article II
hereof, on the following terms and conditions:

               (a) The price per share at which the shares are to be sold to
the Selling Founder shall be equal to the price per share paid to the Selling
Founder by the third party purchaser or purchasers of the Selling Founder's
Stock.

               (b) The Investors shall deliver to the Selling Founder, within 30
days after they have received notice from the Selling Founder or otherwise
become aware of the Prohibited Transfer, the certificate or certificates
representing shares to be sold, each certificate to be properly endorsed for
transfer.

               (c) The Selling Founder shall, upon receipt of the certificates
for the repurchased shares, pay the aggregate section 4.2 purchase price
therefor, by certified check or bank draft made payable to the order of the
Investors, and shall reimburse the Investors for any additional expenses,
including legal fees and expenses, incurred in effecting such purchase and
resale.

                                    ARTICLE V

                               LEGEND REQUIREMENTS

                                       5
<PAGE>   6

       5.1 Legend. Each certificate representing the Stock owned by the Founders
shall be endorsed with the following legend:

               "THE SALE OR TRANSFER OF THE SECURITIES REPRESENTED BY THIS
               CERTIFICATE IS SUBJECT TO THE TERMS AND CONDITIONS OF A CERTAIN
               FIRST REFUSAL AND CO-SALE AGREEMENT BY AND AMONG THE COMPANY, THE
               FOUNDERS OF THE COMPANY AND THE INVESTORS IN THE PREFERRED STOCK
               OF THE COMPANY. A COPY OF SUCH AGREEMENT IS ON FILE AT THE
               PRINCIPAL OFFICE OF THE COMPANY."

        5.2 Removal. The Section 5.1 legend shall be removed upon termination of
this Agreement in accordance with the provisions of section 6.1.

                                   ARTICLE VI

                            MISCELLANEOUS PROVISIONS

       6.1 Termination. The rights of the Company and the Investors under this
Agreement and the correlative obligations of the Founders with respect to the
Company and the Investors shall terminate at such time as the Investors shall no
longer be the owners of any shares of capital stock of the Company. Unless
sooner terminated in accordance with the preceding sentence, this Agreement
shall terminate immediately prior to the closing of a bona fide firm commitment
underwritten public offering of the Company's Common Stock registered under the
Securities Act of 1933 on Form SB-2 or Form S-1 (or any successor form
designated by the Securities and Exchange Commission), the public offering price
of which was not less than $7.60 per share (adjusted to reflect subsequent stock
dividends, stock splits or recapitalizations), and resulted in $30,000,000 in
gross proceeds to the Company (before deducting underwriters' discounts,
commissions and expenses).

       6.2 Notice. Unless otherwise provided, any notice required or permitted
under this Agreement shall be given in writing and shall be deemed effectively
given upon personal delivery to the party to be notified or upon delivery by
confirmed facsimile transmission or nationally recognized overnight courier
service or upon deposit with the United States Post Office, by registered or
certified mail, postage prepaid and addressed to the party to be notified at the
address indicated for such party on the signature page hereof, or at such other
address as such party may designate by ten (10) days' advance written notice to
the other parties.

        6.3 Severability. In the event one or more of the provisions of this
Agreement should, for any reason, be held to be invalid, illegal or
unenforceable in any respect, such invalidity, illegality or unenforceability
shall not affect any other provisions of this Agreement, and this Agreement
shall be construed and interpreted in such manner as to be effective and valid
under applicable law.

                                       6
<PAGE>   7

        6.4 Waiver or Modification. Any amendment or modification of this
Agreement shall be effective only if evidenced by a written instrument executed
by (i) Founders holding a majority of the Common Stock of the Company then held
by all of the Founders, (ii) the Company and (iii) Investors holding sixty
percent (60%) of the Common Stock issuable or issued upon conversion of the
Preferred Stock of the Company then held by all Investors.

       6.5 Governing Law. This Agreement shall be governed by and construed in
accordance with the laws of the State of Delaware as applied in contracts among
Delaware residents entered into and performed entirely within Delaware .

       6.6 Attorneys' Fees. In the event of any dispute involving the terms
hereof, the prevailing parties shall be entitled to collect legal fees and
expenses from the other party to the dispute.

       6.7 Further Assurances. Each party agrees to act in accordance herewith
and not to take any action that is designed to avoid the intention hereof.

       6.8 Successors and Assigns. This Agreement and the rights and obligations
of the parties hereunder shall inure to the benefit of, and be binding upon,
their respective successors, assigns and legal representatives.

        6.9 Aggregation of Stock. For the purposes of determining the
availability of any rights under this Agreement, the holdings of transferees and
assignees of an individual or a partnership who are spouses, ancestors, lineal
descendants or siblings of such individual or partners or retired partners of
such partnership or partnerships affiliated with such transferring or assigning
partnership (including spouses and ancestors, lineal descendants and siblings of
such partners or spouses who acquire Common Stock by gift, will or intestate
succession) shall be aggregated together with the individual or partnership, as
the case may be, for the purpose of exercising any rights or taking any action
under this Agreement.

        6.10 Conflict with Other Rights of First Refusal. Each of the Founders
has entered into a Stock Transfer Restriction Agreement with the Company, which
agreement contains a right of first refusal provision in favor of the Company.
For so long as this Agreement remains in existence, the right of first refusal
provisions contained in this Agreement shall supersede the right of first
refusal provisions contained in any other agreements. If, however, this
Agreement shall terminate, the right of first refusal provisions contained in
the other agreements shall be in full force and effect.

        6.11 Prior Agreement Superseded. This Agreement is the entire
understanding of the parties about its subject matter. This Agreement supersedes
all prior or contemporaneous agreements, including without limitation the Prior
Agreement, regarding the subject matter of this Agreement, and all such prior or
contemporaneous agreements are terminated and of no further force or effect.

                                       7
<PAGE>   8

       IN WITNESS WHEREOF, the parties have executed this Agreement on the day
and year first indicated above.

                                       THE COMPANY:

                                       WEBRIDGE, INC.

                                       By:
                                          --------------------------------------
                                                   Gary N. Fielland
                                                   Chief Executive Officer

                        Address:       225 SW Broadway, Suite 400
                                       Portland, OR  97205

                        SIGNATURE PAGE TO WEBRIDGE, INC.
         SECOND AMENDED AND RESTATED FIRST REFUSAL AND CO-SALE AGREEMENT

<PAGE>   9

                                INVESTORS:

                                MERITECH CAPITAL PARTNERS L.P.

                                By:    Meritech Capital Associates L.L.C.
                                       its General Partner

                                By:    Meritech Management Associates L.L.C.
                                       a managing member

                                By:
                                   ---------------------------------------------
                                       Michael B. Gordon, a managing member

                                MERITECH CAPITAL AFFILIATES L.P.

                                By:    Meritech Capital Associates L.L.C.
                                       its General Partner

                                By:    Meritech Management Associates L.L.C.
                                       a managing member

                                By:
                                   ---------------------------------------------
                                       Michael B. Gordon, a managing member

                 Address:       90 Middlefield Road, Suite 201
                                Menlo Park, CA  94025

                        SIGNATURE PAGE TO WEBRIDGE, INC.
         SECOND AMENDED AND RESTATED FIRST REFUSAL AND CO-SALE AGREEMENT

<PAGE>   10

                                 INTEL CORPORATION

                                 By:
                                    --------------------------------------------
                                        (signature)
                                 Name:
                                      ------------------------------------------
                                 Title:
                                       -----------------------------------------

                  Address:       2200 Mission College Blvd.
                                 Santa Clara, California 95052

                        SIGNATURE PAGE TO WEBRIDGE, INC.
         SECOND AMENDED AND RESTATED FIRST REFUSAL AND CO-SALE AGREEMENT

<PAGE>   11

                                 MANCHESTER BRIDGE PRINCIPAL L.P.

                                 By:    Manchester Principal LLC, its General
                                        Partner

                                 By:
                                    --------------------------------------------
                                        (signature)
                                 Name:
                                      ------------------------------------------
                                 Title:
                                       -----------------------------------------

                  Address:       411 Theodore Fremd Avenue
                                 Rye, NY  10580

                        SIGNATURE PAGE TO WEBRIDGE, INC.
         SECOND AMENDED AND RESTATED FIRST REFUSAL AND CO-SALE AGREEMENT

<PAGE>   12

                                 SEVIN ROSEN FUND V L.P.

                                 By:    SRB Associates V L.P.
                                        Its General Partner

                                 By:
                                    --------------------------------------------
                                        (signature)
                                 Name:
                                      ------------------------------------------
                                 Title: General Partner

                                 SEVIN ROSEN V AFFILIATES FUND L.P.

                                 By:    SRB Associates V L.P.
                                        Its General Partner

                                 By:
                                    --------------------------------------------
                                        (signature)
                                 Name:
                                      ------------------------------------------
                                 Title: General Partner

                                 SEVIN ROSEN BAYLESS MANAGEMENT COMPANY

                                 By:
                                    --------------------------------------------
                                        (signature)
                                 Name:
                                      ------------------------------------------
                                 Title:
                                       -----------------------------------------

                  Address:       c/o The Sevin Rosen Funds
                                 13455 Noel Road, Suite 1670
                                 Dallas, Texas  75240

                        SIGNATURE PAGE TO WEBRIDGE, INC.
         SECOND AMENDED AND RESTATED FIRST REFUSAL AND CO-SALE AGREEMENT

<PAGE>   13

                                 OLYMPIC VENTURE PARTNERS IV, L.P.
                                 By:    OVMC IV, L.L.C., General Partner

                                 By:
                                    --------------------------------------------
                                        (signature)
                                 Name:
                                      ------------------------------------------
                                            Title: Member

                  Address:       2420 Carillon Point
                                 Kirkland, Washington  98033

                                 OVP IV ENTREPRENEURS FUND, L.P.
                                 By:    OVMC IV, L.L.C., General Partner

                                 By:
                                    --------------------------------------------
                                        (signature)
                                 Name:
                                      ------------------------------------------
                                            Title: Member

                  Address:       2420 Carillon Point
                                 Kirkland, Washington  98033

                        SIGNATURE PAGE TO WEBRIDGE, INC.
         SECOND AMENDED AND RESTATED FIRST REFUSAL AND CO-SALE AGREEMENT

<PAGE>   14

                            WORLDVIEW TECHNOLOGY PARTNERS I, L.P.
                            By: Worldview Capital I, L.P., its General Partner
                            By: Worldview Equity I, L.L.C., its General
                            Partner

                            By:
                               -------------------------------------------------
                                 Mike Orsak, General Partner

                            WORLDVIEW TECHNOLOGY INTERNATIONAL I, L.P.
                            By: Worldview Capital I, L.P., its General Partner
                            By: Worldview Equity I, L.L.C., its General
                            Partner

                            By:
                               -------------------------------------------------
                                 Mike Orsak, General Partner

                            WORLDVIEW STRATEGIC PARTNERS I, L.P.
                            By: Worldview Capital I, L.P., its General Partner
                            By: Worldview Equity I, L.L.C., its General
                            Partner

                            By:
                               -------------------------------------------------
                                 Mike Orsak, General Partner

                  Address:       435 Tasso Street, Suite 120
                                 Palo Alto, CA  94301

                        SIGNATURE PAGE TO WEBRIDGE, INC.
         SECOND AMENDED AND RESTATED FIRST REFUSAL AND CO-SALE AGREEMENT

<PAGE>   15

                                 KAUFMAN FAMILY LLC

                                 By:
                                    --------------------------------------------
                                 Name:
                                      ------------------------------------------
                                 Title:
                                       -----------------------------------------

                  Address:       660 Madison Avenue, 15th Floor
                                 New York, NY  10021

                        SIGNATURE PAGE TO WEBRIDGE, INC.
         SECOND AMENDED AND RESTATED FIRST REFUSAL AND CO-SALE AGREEMENT

<PAGE>   16

                                 INDIVIDUAL INVESTOR:

                                 --------------------------------------------
                                 Gary N. Fielland

                  Address:       11255 NW Ridge Road
                                 Portland, Oregon  97229

                        SIGNATURE PAGE TO WEBRIDGE, INC.
         SECOND AMENDED AND RESTATED FIRST REFUSAL AND CO-SALE AGREEMENT

<PAGE>   17

                                            INDIVIDUAL INVESTOR:

                                            ------------------------------------
                                            C. Scott Gibson

                             Address:       1900 Twin Points Road
                                            Lake Oswego, Oregon  97034

                        SIGNATURE PAGE TO WEBRIDGE, INC.
         SECOND AMENDED AND RESTATED FIRST REFUSAL AND CO-SALE AGREEMENT

<PAGE>   18

                                            INDIVIDUAL INVESTOR:

                                            ------------------------------------
                                            Lary L. Evans

                             Address:       508 Newhall CV
                                            Austin, Texas  78746

                        SIGNATURE PAGE TO WEBRIDGE, INC.
         SECOND AMENDED AND RESTATED FIRST REFUSAL AND CO-SALE AGREEMENT

<PAGE>   19

                             INDIVIDUAL INVESTOR:

                             ---------------------------------------------------
                             William W. Lattin, as Trustee for The William and
                             June Lattin Revocable Living Trust

                 Address:    The William and June Lattin Revocable
                             Living Trust
                             10911 NW Quarry Road
                             Portland, Oregon  97231

                        SIGNATURE PAGE TO WEBRIDGE, INC.
         SECOND AMENDED AND RESTATED FIRST REFUSAL AND CO-SALE AGREEMENT

<PAGE>   20

                                            INDIVIDUAL INVESTOR:

                                            ------------------------------------
                                            Gregory Darmohray

                             Address:       8350 NW Ash
                                            Portland, OR  97229

                        SIGNATURE PAGE TO WEBRIDGE, INC.
         SECOND AMENDED AND RESTATED FIRST REFUSAL AND CO-SALE AGREEMENT

<PAGE>   21

                                            INDIVIDUAL INVESTOR:

                                            ------------------------------------
                                            Marcia Hooper

                             Address:       4 Claybrook Road
                                            Dover, MA  02030

                        SIGNATURE PAGE TO WEBRIDGE, INC.
         SECOND AMENDED AND RESTATED FIRST REFUSAL AND CO-SALE AGREEMENT

<PAGE>   22

                                            FOUNDER:

                                            ------------------------------------
                                            Gary N. Fielland

                             Address:       c/o Webridge, Inc.
                                            225 SW Broadway, Suite 400
                                            Portland, OR  97205

                        SIGNATURE PAGE TO WEBRIDGE, INC.
         SECOND AMENDED AND RESTATED FIRST REFUSAL AND CO-SALE AGREEMENT

<PAGE>   23

                                            FOUNDER:

                                            ------------------------------------
                                            Mark S. Anastas

                             Address:       c/o Webridge, Inc.
                                            225 SW Broadway, Suite 400
                                            Portland, OR  97205

                        SIGNATURE PAGE TO WEBRIDGE, INC.
         SECOND AMENDED AND RESTATED FIRST REFUSAL AND CO-SALE AGREEMENT

<PAGE>   24

                                            FOUNDER:

                                            ------------------------------------
                                            Gary M. Raetz

                             Address:       c/o Webridge, Inc.
                                            225 SW Broadway, Suite 400
                                            Portland, OR  97205

                        SIGNATURE PAGE TO WEBRIDGE, INC.
         SECOND AMENDED AND RESTATED FIRST REFUSAL AND CO-SALE AGREEMENT

<PAGE>   25

                                            FOUNDER:

                                            ------------------------------------
                                            Jon F. Jackson

                             Address:       c/o Webridge, Inc.
                                            225 SW Broadway, Suite 400
                                            Portland, OR  97205

                        SIGNATURE PAGE TO WEBRIDGE, INC.
         SECOND AMENDED AND RESTATED FIRST REFUSAL AND CO-SALE AGREEMENT

<PAGE>   26

                                            FOUNDER:

                                            ------------------------------------
                                            Arun Garg

                             Address:       c/o Webridge, Inc.
                                            225 SW Broadway, Suite 400
                                            Portland, OR  97205

                        SIGNATURE PAGE TO WEBRIDGE, INC.
         SECOND AMENDED AND RESTATED FIRST REFUSAL AND CO-SALE AGREEMENT

<PAGE>   27

                                            FOUNDER:

                                            ------------------------------------
                                            Jeffrey J. Berkowitz

                             Address:       c/o Webridge, Inc.
                                            225 SW Broadway, Suite 400
                                            Portland, OR  97205

                        SIGNATURE PAGE TO WEBRIDGE, INC.
         SECOND AMENDED AND RESTATED FIRST REFUSAL AND CO-SALE AGREEMENT

<PAGE>   28

                                            FOUNDER:

                                            ------------------------------------
                                            Gary A. Whitney

                             Address:       c/o Webridge, Inc.
                                            225 SW Broadway, Suite 400
                                            Portland, OR  97205

                        SIGNATURE PAGE TO WEBRIDGE, INC.
         SECOND AMENDED AND RESTATED FIRST REFUSAL AND CO-SALE AGREEMENT

<PAGE>   29

                                           FOUNDER:

                                            ------------------------------------
                                            Joseph A. Hull

                             Address:       c/o Webridge, Inc.
                                            225 SW Broadway, Suite 400
                                            Portland, OR  97205

                        SIGNATURE PAGE TO WEBRIDGE, INC.
         SECOND AMENDED AND RESTATED FIRST REFUSAL AND CO-SALE AGREEMENT

<PAGE>   30

                                            FOUNDER:

                                            ------------------------------------
                                            Steven "Shap" Shapiro

                             Address:       c/o Webridge, Inc.
                                            225 SW Broadway, Suite 400
                                            Portland, OR  97205

                        SIGNATURE PAGE TO WEBRIDGE, INC.
         SECOND AMENDED AND RESTATED FIRST REFUSAL AND CO-SALE AGREEMENT

<PAGE>   31

                                            FOUNDER:

                                            ------------------------------------
                                            Peter J. Bray

                             Address:       c/o Webridge, Inc.
                                            225 SW Broadway, Suite 400
                                            Portland, OR  97205

                        SIGNATURE PAGE TO WEBRIDGE, INC.
         SECOND AMENDED AND RESTATED FIRST REFUSAL AND CO-SALE AGREEMENT

<PAGE>   32

                                            FOUNDER:

                                            ------------------------------------
                                            Laura M. Freeman

                             Address:       c/o Webridge, Inc.
                                            225 SW Broadway, Suite 400
                                            Portland, OR  97205

                        SIGNATURE PAGE TO WEBRIDGE, INC.
         SECOND AMENDED AND RESTATED FIRST REFUSAL AND CO-SALE AGREEMENT

<PAGE>   33

                                            FOUNDER:

                                            ------------------------------------
                                            Satish M. Doshi

                             Address:       c/o Webridge, Inc.
                                            225 SW Broadway, Suite 400
                                            Portland, OR  97205

                        SIGNATURE PAGE TO WEBRIDGE, INC.
         SECOND AMENDED AND RESTATED FIRST REFUSAL AND CO-SALE AGREEMENT

<PAGE>   34

                                            FOUNDER:

                                            ------------------------------------
                                            Steve P. Paquin

                             Address:       c/o Webridge, Inc.
                                            225 SW Broadway, Suite 400
                                            Portland, OR  97205

                        SIGNATURE PAGE TO WEBRIDGE, INC.
         SECOND AMENDED AND RESTATED FIRST REFUSAL AND CO-SALE AGREEMENT

<PAGE>   35

                                            FOUNDER:

                                            ------------------------------------
                                            Phillip E. Hochstetler

                             Address:       c/o Webridge, Inc.
                                            225 SW Broadway, Suite 400
                                            Portland, OR  97205

                        SIGNATURE PAGE TO WEBRIDGE, INC.
         SECOND AMENDED AND RESTATED FIRST REFUSAL AND CO-SALE AGREEMENT

<PAGE>   36

                                            FOUNDER:

                                            ------------------------------------
                                            Robert D. Beck

                             Address:       c/o Webridge, Inc.
                                            225 SW Broadway, Suite 400
                                            Portland, OR  97205

                        SIGNATURE PAGE TO WEBRIDGE, INC.
         SECOND AMENDED AND RESTATED FIRST REFUSAL AND CO-SALE AGREEMENT

<PAGE>   37

                                            FOUNDER:

                                            ------------------------------------
                                            Sylvia Giroux

                             Address:       6123 SW Frances
                                            Hillsboro, OR  97124

                        SIGNATURE PAGE TO WEBRIDGE, INC.
         SECOND AMENDED AND RESTATED FIRST REFUSAL AND CO-SALE AGREEMENT

<PAGE>   38

                                    EXHIBIT A

Names and Addresses of the Investors

MERITECH CAPITAL PARTNERS L.P.
MERITECH CAPITAL AFFILIATES L.P.
90 Middlefield Road, Suite 201
Menlo Park, CA  94025

INTEL CORPORATION
2200 Mission College Blvd.
Santa Clara, California 95052

MANCHESTER BRIDGE PRINCIPAL LP
411 Theodore Fremd Avenue
Rye, New York 10580

SEVIN ROSEN FUND V L.P.
SEVIN ROSEN V AFFILIATES FUND L.P.
SEVIN ROSEN BAYLESS MANAGEMENT COMPANY
13455 Noel Road, Suite 1670
Dallas, Texas 75240

OLYMPIC VENTURE PARTNERS IV, L.P.
OVP IV ENTREPRENEURS FUND, L.P.
2420 Carillon Point
Kirkland, Washington 98033

GARY N. FIELLAND
11255 NW Ridge Road
Portland, Oregon 97229

C. SCOTT GIBSON
1900 Twin Points Road
Lake Oswego, Oregon 97034

WILLIAM W. LATTIN
The William and June Lattin Revocable Living Trust
10911 NW Quarry Road
Portland, Oregon  97231

LARY EVANS
508 Newhall CV
Austin, Texas 78746

                                       1
<PAGE>   39

WORLDVIEW TECHNOLOGY PARTNERS I, L.P.
WORLDVIEW TECHNOLOGY INTERNATIONAL I, L.P.
WORLDVIEW STRATEGIC PARTNERS I, L.P.
435 Tasso Street
Suite 120
Palo Alto, CA  94301

KAUFMAN FAMILY LLC
660 Madison Avenue, 15th Floor
New York, NY  10021

GREGORY DARMOHRAY
8350 NW Ash
Portland, OR  97229

MARCIA HOOPER
4 Claybrook Road
Dover, MA  02030

                                       2
<PAGE>   40

<TABLE>
<CAPTION>

                                                 Shares of                   Shares of
                                               Common Stock               Preferred Stock
Name and Address of the Founder             Held by the Founder         Held by the Founder
-------------------------------             -------------------         -------------------
<S>                                         <C>                      <C>
MARK S. ANASTAS                                  1,099,432                       0
c/o Webridge, Inc.
225 SW Broadway, Suite 400
Portland, OR  97205

ROBERT D. BECK                                    803,647                        0
c/o Webridge, Inc.
225 SW Broadway, Suite 400
Portland, OR  97205

JEFFREY J. BERKOWITZ                              263,042                        0
c/o Webridge, Inc.
225 SW Broadway, Suite 400
Portland, OR  97205

PETER J. BRAY                                     529,917                        0
c/o Webridge, Inc.
225 SW Broadway, Suite 400
Portland, OR  97205

SATISH M. DOSHI                                   505,114                        0
c/o Webridge, Inc.
225 SW Broadway, Suite 400
Portland, OR  97205

GARY N. FIELLAND                                 1,099,432           127,295 Series A Preferred
c/o Webridge, Inc.                                                        63,220 Series C
225 SW Broadway, Suite 400                                                   Preferred
Portland, OR  97205

LAURA M. FREEMAN                                  506,156                        0
c/o Webridge, Inc.
225 SW Broadway, Suite 400
Portland, OR  97205

ARUN GARG                                        1,099,432                       0
c/o Webridge, Inc.
225 SW Broadway, Suite 400
Portland, OR  97205

PHILLIP E. HOCHSTETLER                            550,114                        0
c/o Webridge, Inc.
225 SW Broadway, Suite 400
Portland, OR  97205

JOSEPH A. HULL                                    561,079                        0
c/o Webridge, Inc.
225 SW Broadway, Suite 400
</TABLE>

                                       3
<PAGE>   41

<TABLE>
<CAPTION>

                                                 Shares of                   Shares of
                                               Common Stock               Preferred Stock
Name and Address of the Founder             Held by the Founder         Held by the Founder
-------------------------------             -------------------         -------------------
<S>                                         <C>                         <C>
Portland, OR  97205

JON F. JACKSON                                   1,074,575                       0
c/o Webridge, Inc.
225 SW Broadway, Suite 400
Portland, OR  97205

STEVE P. PAQUIN                                  1,000,000                       0
c/o Webridge, Inc.
225 SW Broadway, Suite 400
Portland, OR  97205

GARY M. RAETZ                                     557,866                        0
c/o Webridge, Inc.
225 SW Broadway, Suite 400
Portland, OR  97205

STEVEN "SHAP" SHAPIRO                             532,466                        0
c/o Webridge, Inc.
225 SW Broadway, Suite 400
Portland, OR  97205

GARY A. WHITNEY                                   554,975                        0
c/o Webridge, Inc.
225 SW Broadway, Suite 400
Portland, OR  97205

SYLVIA GIROUX                                     263,042                        0
6123 SW Frances
Hillsboro, OR  97124
</TABLE>

                                       4<PAGE>   1
                                                                     EXHIBIT 4.3

                                 WEBRIDGE, INC.

                           SECOND AMENDED AND RESTATED
                           INVESTORS' RIGHTS AGREEMENT

                                DECEMBER 22, 1999

<PAGE>   2

<TABLE>
<CAPTION>

                                TABLE OF CONTENTS

                                                                                    Page
                                                                                    ----
<S>     <C>                                                                         <C>
1.      Registration Rights...........................................................1
        1.1     Definitions...........................................................1
        1.2     Request for Registration..............................................3
        1.3     Company Registration..................................................5
        1.4     Obligations of the Company............................................5
        1.5     Furnish Information...................................................6
        1.6     Expenses of Demand Registration.......................................6
        1.7     Expenses of Company Registration......................................7
        1.8     Underwriting Requirements.............................................7
        1.9     Delay of Registration.................................................8
        1.11    Reports Under Securities Exchange Act of 1934.........................9
        1.12    Form S-3 Registration.................................................10
        1.13    Assignment of Registration Rights....................................11
        1.14    "Market Stand-Off" Agreement..........................................11
        1.15    Termination of Registration Rights...................................12

2.      Covenants of the Company.....................................................12
        2.1     Delivery of Financial Statements.....................................12
        2.2     Inspection...........................................................13
        2.3     Confidentiality, Assignment and Termination of Covenants.............13
        2.4     Right of First Offer.................................................14
        2.5     Board of Directors...................................................15
        2.6     Section 1202 Compliance..............................................16
        2.7     Indemnification Agreements...........................................16
        2.8     Assignments of Rights of First Refusal...............................16

3.      Miscellaneous................................................................17
        3.1     Successors and Assigns...............................................17
        3.2     Governing Law........................................................17
        3.3     Counterparts.........................................................17
        3.4     Titles and Subtitles.................................................17
        3.5     Notices..............................................................17
        3.6     Expenses.............................................................18
        3.7     Amendments and Waivers...............................................18
        3.8     Severability.........................................................18
        3.9     Aggregation of Stock.................................................18
        3.10    Prior Agreement Superseded...........................................18
</TABLE>

Schedule A     Schedule of Investors and Founders

<PAGE>   3

                              AMENDED AND RESTATED
                           INVESTORS' RIGHTS AGREEMENT

       THIS AMENDED AND RESTATED INVESTORS' RIGHTS AGREEMENT is made as of
December 22, 1999, by and among Webridge, Inc., a Delaware corporation (the
"Company"), and the investors and the founders of the Company listed on Schedule
A hereto (the "Investors" and the "Founders," respectively).

                                    RECITALS

       WHEREAS, the Company and certain Investors are parties to the Series A
Preferred Stock Purchase Agreement dated as of August 25, 1997 (the "Series A
Agreement");

       WHEREAS, the Company and certain Investors are parties to the Series B
Preferred Stock Purchase Agreement dated as of December 24, 1998 (the "Series B
Agreement");

       WHEREAS, the Company and certain Investors are parties to the Series C
Preferred Stock Purchase Agreement of even date herewith (the "Series C
Agreement");

       WHEREAS, the Company, certain Investors and the Founders are parties to
an Investors' Rights Agreement dated as of August 25, 1997 that was amended by
the Amended and Restated Investors' Rights Agreement dated as of December 24,
1998 (the "Prior Agreement"); and

       WHEREAS, in order to induce the Company to enter into the Series C
Agreement and to induce the Investors to invest funds in the Company pursuant to
the Series C Agreement, the Investors, the Founders and the Company hereby agree
that this Agreement shall govern the rights of the Investors and the Founders to
cause the Company to register shares of Common Stock issuable to the Investors
and certain other matters as set forth herein and shall supersede the Prior
Agreement;

        NOW, THEREFORE, THE PARTIES HEREBY AGREE AS FOLLOWS:

         1.       Registration Rights. The Company covenants and agrees as
follows:

                  1.1      Definitions. For purposes of this Agreement:

                           (a) The term "Act" means the Securities Act of 1933,
as amended.

                           (b) The term "Form S-3" means such form under the Act
as in effect on the date hereof or any registration form under the Act
subsequently adopted by the SEC that permits inclusion or incorporation of
substantial information by reference to other documents filed by the Company
with the SEC.

<PAGE>   4

                           (c) The term "Holder" means any person owning or
having the right to acquire Registrable Securities or any assignee thereof in
accordance with Section 1.13 hereof.

                           (d) The term "1934 Act" means the Securities Exchange
Act of 1934, as amended.

                           (e) The term "Preferred Stock" means the Series A
Preferred Stock, the Series B Preferred Stock and the Series C Preferred Stock
of the Company.

                           (f) The term "register," "registered," and
"registration" refer to a registration effected by preparing and filing a
registration statement or similar document in compliance with the Act, and the
declaration or ordering of effectiveness of such registration statement or
document.

                           (g) The term "Registrable Securities" means (i) the
Common Stock issuable or issued upon conversion of the Preferred Stock (whether
currently issued or hereafter acquired), (ii) for purposes of Section 1.3 (and
other portions of this Section 1, to the extent they relate to rights or
registration under Section 1.3), the term "Registrable Securities" shall also
include shares of Common Stock of the Company held by Founders (other than
shares described in clauses (i) and (iii) of this subsection 1.1(g)) eligible
for registration pursuant to subsection 1.3(b), and (iii) any Common Stock of
the Company issued as (or issuable upon the conversion or exercise of any
warrant, right or other security that is issued as) a dividend or other
distribution with respect to, or in exchange for or in replacement of the shares
referenced in (i) and (ii) above; provided, however, that the term "Registrable
Securities" shall exclude in all cases any Registrable Securities sold by a
person in a transaction in which his rights under this Section 1 are not
assigned.

                           (h) The number of shares of "Registrable Securities
then outstanding" shall be determined by the number of shares of Common Stock
outstanding that are, and the number of shares of Common Stock issuable pursuant
to then exercisable or convertible securities that are, Registrable Securities.

                           (i) The term "SEC" shall mean the Securities and
Exchange Commission.

                                       2
<PAGE>   5

                  1.2      Request for Registration.

                           (a) If the Company shall receive at any time after
the earlier of (i) August 25, 2000 or (ii) twelve (12) months after the
effective date of the first registration statement for a public offering of
securities of the Company (other than a registration statement relating either
to the sale of securities to employees of the Company pursuant to a stock
option, stock purchase or similar plan or a SEC Rule 145 transaction), a written
request from either (x) the Holders of a majority of the Registrable Securities
then outstanding or (y) in the case of a request made after a registration
requested pursuant to this Section 1.2 has already been declared effective or
such registration has been terminated and the foregoing demand right has been
forfeited pursuant to Section 1.6, the Holders of at least twenty-five percent
(25%) of the Registrable Securities then outstanding, that the Company file a
registration statement under the Act covering the registration of at least
twenty percent (20%) of the Registrable Securities then outstanding and having
an aggregate offering price, net of underwriting discounts and commissions, of
at least $7,500,000, then the Company shall:

                                    (i) within ten (10) days of the receipt
thereof, give written notice of such request to all Holders; and

                                    (ii) effect as soon as practicable, and in
any event within one hundred twenty (120) days of the receipt of such request,
the registration under the Act of all Registrable Securities that the Holders
request to be registered, subject to the limitations of subsection 1.2(b),
within twenty (20) days of the mailing of such notice by the Company in
accordance with Section 3.5.

                           (b) If the Holders initiating the registration
request hereunder ("Initiating Holders") intend to distribute the Registrable
Securities covered by their request by means of an underwriting, they shall so
advise the Company as a part of their request made pursuant to subsection 1.2(a)
and the Company shall include such information in the written notice referred to
in subsection 1.2(a). The underwriter will be selected by the Company and shall
be reasonably acceptable to a majority in interest of the Initiating Holders. In
such event, the right of any Holder to include his Registrable Securities in
such registration shall be conditioned upon such Holder's participation in such
underwriting and the inclusion of such Holder's Registrable Securities in the
underwriting (unless otherwise mutually agreed by a majority in interest of the
Initiating Holders and such Holder) to the extent provided herein. All Holders
proposing to distribute their securities through such underwriting shall
(together with the Company as provided in subsection 1.4(e)) enter into an
underwriting agreement in customary form with the underwriter or underwriters
selected for such underwriting. Notwithstanding any other provision of this
Section 1.2, if the underwriter advises the Initiating Holders in writing that
marketing factors require a limitation of the number of shares to be
underwritten, then the Initiating Holders shall so advise all Holders of
Registrable Securities that would otherwise be underwritten pursuant hereto, and
the number of shares of Registrable Securities that may be included in the
underwriting shall be allocated among all Holders electing to include shares in
the offering, including the Initiating Holders, in proportion (as nearly as
practicable) to the amount of Registrable Securities of the Company owned by
each Holder; provided, however, that the number of shares of Registrable
Securities

                                       3
<PAGE>   6

to be included in such underwriting shall not be reduced unless all other
securities, including securities of the Founders under subsection 1.2(e) below,
are first entirely excluded from the underwriting.

                           (c) Notwithstanding the foregoing, if the Company
shall furnish to Holders requesting a registration statement pursuant to this
Section 1.2, a certificate signed by the Chief Executive Officer (or, if there
is no Chief Executive Officer, the President) of the Company stating that in the
good faith judgment of the Board of Directors of the Company, it would be
seriously detrimental to the Company and its stockholders for such registration
statement to be filed and it is therefore essential to defer the filing of such
registration statement, the Company shall have the right to defer taking action
with respect to such filing for a period of not more than one hundred twenty
(120) days after receipt of the request of the Initiating Holders; provided,
however, that the Company may not utilize this right more than once in any
twelve (12) month period.

                           (d) In addition, the Company shall not be obligated
to effect, or to take any action to effect, any registration pursuant to this
Section 1.2:

                                    (i) After the Company has effected two
registrations pursuant to this Section 1.2 and such registrations have been
declared or ordered effective;

                                    (ii) During the period starting with the
date sixty (60) days prior to the Company's good faith estimate of the date of
filing of, and ending on a date one hundred eighty (180) days after the
effective date of, a registration subject to Section 1.3 hereof; provided that
the Company is actively employing in good faith all reasonable efforts to cause
such registration statement to be effective; or

                                    (iii) If the Initiating Holders propose to
dispose of shares of Registrable Securities that may be immediately registered
on Form S-3 pursuant to a request made pursuant to Section 1.12 below.

                           (e) In connection with a registration under this
Section 1.2, the Founders shall be entitled to include any of their shares of
Common Stock in any registration by the Company under this subsection 1.2,
provided that (A) such persons rights under this Section 1.2 shall be
subordinate to the rights of the Investors, (B) such persons who request
inclusion of their securities in such registration shall continue to serve as
employees of the Company on the effective date of such registration, and (C)
such persons agree to be bound by all other provisions of this Agreement and
participate in any such registration on the same basis as each Holder in
accordance with all applicable provisions of this Agreement.

                                       4
<PAGE>   7

         1.3      Company Registration.

                  (a) If (but without any obligation to do so) the Company
proposes to register (including for this purpose a registration effected by the
Company pursuant to Section 1.2 on behalf of Initiating Holders and including
registration effected by the Company for stockholders other than the Holders)
any of its stock or other securities under the Act in connection with the public
offering of such securities solely for cash (other than a registration relating
solely to the sale of securities to participants in a Company stock plan or a
registration on any form that does not include substantially the same
information as would be required to be included in a registration statement
covering the sale of the Registrable Securities), the Company shall, at such
time, promptly give each Holder written notice of such registration. Upon the
written request of each Holder given within twenty (20) days after mailing of
such notice by the Company in accordance with Section 3.5, the Company shall,
subject to the provisions of Section 1.8, include in the registration statement
all of the Registrable Securities that each such Holder has requested to be
registered.

                  (b) Upon any sale by the Company of shares of its Common Stock
to the public in a firmly underwritten public offering solely for cash, the
Founders shall be entitled to include any of their shares of Common Stock in any
registration by the Company under this subsection 1.3, if (A) such persons who
choose to include any of the securities in such registration shall continue to
serve as employees of the Company on the effective date of such registration
statement, and (B) such persons agree to be bound by all other provisions of
this Agreement and participate in any such registration on the same basis as
each Holder (except as specifically set forth in Section 1.8 below) in
accordance with all applicable provisions of this Agreement.

         1.4      Obligations of the Company. Whenever required under this
Section 1 to effect the registration of any Registrable Securities, the Company
shall, as expeditiously as reasonably possible:

                  (a) Prepare and file with the SEC a registration statement
with respect to such Registrable Securities and use its best efforts to cause
such registration statement to become effective, and, upon the request of the
Holders of a majority of the Registrable Securities registered thereunder, keep
such registration statement effective for a period of up to ninety (90) days.

                  (b) Prepare and file with the SEC such amendments and
supplements to such registration statement and the prospectus used in connection
with such registration statement as may be necessary to comply with the
provisions of the Act with respect to the disposition of all securities covered
by such registration statement.

                  (c) Furnish to the Holders such numbers of copies of a
prospectus, including a preliminary prospectus, in conformity with the
requirements of the Act, and such other documents as they may reasonably request
in order to facilitate the disposition of Registrable Securities owned by them.

                                       5
<PAGE>   8

                  (d) Use its best efforts to register and qualify the
securities covered by such registration statement under such other securities or
blue sky laws of such jurisdictions as shall be reasonably requested by the
Holders; provided that the Company shall not be required in connection therewith
or as a condition thereto to qualify to do business or to file a general consent
to service of process in any such states or jurisdictions.

                  (e) In the event of any underwritten public offering, enter
into and perform its obligations under an underwriting agreement, in usual and
customary form, with the managing underwriter of such offering. Each Holder
participating in such underwriting shall also enter into and perform its
obligations under such an agreement.

                  (f) Notify each Holder of Registrable Securities covered by
such registration statement at any time when a prospectus relating thereto is
required to be delivered under the Act of the happening of any event as a result
of which the prospectus included in such registration statement, as then in
effect, includes an untrue statement of a material fact or omits to state a
material fact required to be stated therein or necessary to make the statements
therein not misleading in the light of the circumstances then existing.

                  (g) Cause all such Registrable Securities registered pursuant
hereunder to be listed on each securities exchange or nationally recognized
quotation system on which similar securities issued by the Company are then
listed.

         1.5      Furnish Information.

                  (a) It shall be a condition precedent to the obligations of
the Company to take any action pursuant to this Section 1 with respect to the
Registrable Securities of any selling Holder that such Holder shall furnish to
the Company such information regarding itself, the Registrable Securities held
by it, and the intended method of disposition of such securities as shall be
required to effect the registration of such Holder's Registrable Securities.

                  (b) The Company shall have no obligation with respect to any
registration requested pursuant to Section 1.2 or Section 1.12 if, due to the
operation of subsection 1.5(a), the number of shares or the anticipated
aggregate offering price of the Registrable Securities to be included in the
registration does not equal or exceed the number of shares or the anticipated
aggregate offering price required to originally trigger the Company's obligation
to initiate such registration as specified in subsection 1.2(a) or subsection
1.12(b)(2), whichever is applicable.

         1.6      Expenses of Demand Registration. All expenses other than
underwriting discounts and commissions for any selling Holder (if other than
counsel to the Company) incurred in connection with registrations, filings or
qualifications pursuant to Section 1.2, including (without limitation) all
registration, filing and qualification fees, printers' and accounting fees, and
fees and disbursements of counsel for the Company and one special counsel for
the Selling Holders shall be borne by the Company; provided, however, that the
Company shall not be required to pay for any expenses of any registration
proceeding begun

                                       6

<PAGE>   9

pursuant to Section 1.2 if the registration request is subsequently withdrawn at
the request of the Holders of a majority of the Registrable Securities to be
registered (in which case all participating Holders shall bear such expenses),
unless the Holders of a majority of the Registrable Securities agree to forfeit
their right to one demand registration pursuant to Section 1.2; provided
further, however, that if at the time of such withdrawal, the Holders have
learned of a material adverse change in the condition, business, or prospects of
the Company from that known to the Holders at the time of their request and have
withdrawn the request with reasonable promptness following disclosure by the
Company of such material adverse change, then the Holders shall not be required
to pay any of such expenses and shall retain their rights pursuant to Section
1.2.

         1.7      Expenses of Company Registration. The Company shall bear and
pay all expenses incurred in connection with any registration, filing or
qualification of Registrable Securities with respect to the registrations
pursuant to Section 1.3 for each Holder (which right may be assigned as provided
in Section 1.13), including (without limitation) all registration, filing, and
qualification fees, printers and accounting fees relating or apportionable
thereto and the fees and disbursements of counsel for the Company and one
special counsel to the Selling Holders, but excluding underwriting discounts and
commissions relating to Registrable Securities.

         1.8      Underwriting Requirements. In connection with any offering
involving an underwriting of shares of the Company's capital stock, the Company
shall not be required under Section 1.3 to include any of the Holders'
securities in such underwriting unless they accept the terms of the underwriting
as agreed upon between the Company and the underwriters selected by it (or by
other persons entitled to select the underwriters), and then only in such
quantity as the underwriters determine in their sole discretion will not,
jeopardize the success of the offering by the Company. If the total amount of
securities, including Registrable Securities, requested by stockholders to be
included in such offering exceeds the amount of securities sold other than by
the Company that the underwriters determine in their sole discretion is
compatible with the success of the offering, then the Company shall be required
to include in the offering only that number of such securities, including
Registrable Securities, which the underwriters determine in their sole
discretion will not jeopardize the success of the offering (the securities so
included to be apportioned pro rata among the selling stockholders according to
the total amount of securities entitled to be included therein owned by each
selling stockholder or in such other proportions as shall mutually be agreed to
by such selling stockholders; provided, however, that the number of shares of
Registrable Securities to be included in such underwriting shall not be reduced
unless all other securities of selling stockholders are first entirely excluded
from the underwriting). For purposes of the preceding parenthetical concerning
apportionment, for any selling stockholder that is a holder of Registrable
Securities and that is a partnership or corporation, the affiliated
partnerships, the partners, retired partners and stockholders of such holder, or
the estates and family members of any such partners and retired partners and any
trusts for the benefit of any of the foregoing persons shall be deemed to be a
single "selling stockholder," and any pro-rata reduction with respect to such
"selling stockholder" shall be based upon the aggregate amount of shares
carrying registration rights owned by all entities and individuals included in
such "selling stockholder," as defined in this sentence.

                                       7
<PAGE>   10

         1.9      Delay of Registration. No Holder shall have any right to
obtain or seek an injunction restraining or otherwise delaying any such
registration as the result of any controversy that might arise with respect to
the interpretation or implementation of this Section 1.

         1.10     Indemnification.

                  (a) To the extent permitted by law, the Company will indemnify
and hold harmless each Holder, any underwriter (as defined in the Act) for such
Holder and each person, if any, who controls such Holder or underwriter within
the meaning of the Act or the 1934 Act, against any losses, claims, damages, or
liabilities (joint or several) to which they may become subject under the Act,
or the 1934 Act or other federal or state securities law, insofar as such
losses, claims, damages, or liabilities (or actions in respect thereof) arise
out of or are based upon any of the following statements, omissions or
violations (collectively a "Violation"): (i) any untrue statement or alleged
untrue statement of a material fact contained in such registration statement,
including any preliminary prospectus or final prospectus contained therein or
any amendments or supplements thereto, (ii) the omission or alleged omission to
state therein a material fact required to be stated therein, or necessary to
make the statements therein not misleading, or (iii) any violation or alleged
violation by the Company of the Act, the 1934 Act, any state securities law or
any rule or regulation promulgated under the Act, or the 1934 Act or any state
securities law; and the Company will pay to each such Holder, underwriter or
controlling person, as incurred, any legal or other expenses reasonably incurred
by them in connection with investigating or defending any such loss, claim,
damage, liability, or action; provided, however, that the indemnity agreement
contained in this subsection 1.10(a) shall not apply to amounts paid in
settlement of any such loss, claim, damage, liability, or action if such
settlement is effected without the consent of the Company (which consent shall
not be unreasonably withheld), nor shall the Company be liable in any such case
for any such loss, claim, damage, liability, or action to the extent that it
arises out of or is based upon a Violation that occurs in reliance upon and in
conformity with written information furnished expressly for use in connection
with such registration by any such Holder, underwriter or controlling person.

                  (b) To the extent permitted by law, each selling Holder will
indemnify and hold harmless the Company, each of its directors, each of its
officers who has signed the registration statement, each person, if any, who
controls the Company within the meaning of the Act, any underwriter, any other
Holder selling securities in such registration statement and any controlling
person of any such underwriter or other Holder, against any losses, claims,
damages, or liabilities (joint or several) to which any of the foregoing persons
may become subject, under the Act, the 1934 Act or other federal or state
securities law, insofar as such losses, claims, damages, or liabilities (or
actions in respect thereto) arise out of or are based upon any Violation, in
each case to the extent (and only to the extent) that such Violation occurs in
reliance upon and in conformity with written information furnished by such
Holder expressly for use in connection with such registration; and each such
Holder will pay, as incurred, any legal or other expenses reasonably incurred by
any person intended to be indemnified pursuant to this subsection 1.10(b), in
connection with investigating or defending

                                       8
<PAGE>   11

any such loss, claim, damage, liability, or action; provided, however, that the
indemnity agreement contained in this subsection 1.10(b) shall not apply to
amounts paid in settlement of any such loss, claim, damage, liability or action
if such settlement is effected without the consent of the Holder, which consent
shall not be unreasonably withheld; provided, that, in no event shall any
indemnity under this subsection 1.10(b) exceed the net proceeds from the
offering received by such Holder.

                  (c) Promptly after receipt by an indemnified party under this
Section 1.10 of notice of the commencement of any action (including any
governmental action), such indemnified party will, if a claim in respect thereof
is to be made against any indemnifying party under this Section 1.10, deliver to
the indemnifying party a written notice of the commencement thereof and the
indemnifying party shall have the right to participate in, and, to the extent
the indemnifying party so desires, jointly with any other indemnifying party
similarly noticed, to assume the defense thereof with counsel mutually
satisfactory to the parties; provided, however, that an indemnified party
(together with all other indemnified parties that may be represented without
conflict by one counsel) shall have the right to retain one separate counsel,
with the fees and expenses to be paid by the indemnifying party, if
representation of such indemnified party by the counsel retained by the
indemnifying party would be inappropriate due to actual or potential differing
interests between such indemnified party and any other party represented by such
counsel in such proceeding. The failure to deliver written notice to the
indemnifying party within a reasonable time of the commencement of any such
action, if materially prejudicial to its ability to defend such action, shall
relieve such indemnifying party of any liability to the indemnified party under
this Section 1.10, but the omission so to deliver written notice to the
indemnifying party will not relieve it of any liability that it may have to any
indemnified party otherwise than under this Section 1.10.

                  (d) The obligations of the Company and Holders under this
Section 1.10 shall survive the completion of any offering of Registrable
Securities in a registration statement under this Section 1, and otherwise.

         1.11     Reports Under Securities Exchange Act of 1934. With a view to
making available to the Holders the benefits of Rule 144 promulgated under the
Act and any other rule or regulation of the SEC that may at any time permit a
Holder to sell securities of the Company to the public without registration or
pursuant to a registration on Form S-3, the Company agrees to:

                  (a) make and keep public information available, as those terms
are understood and defined in SEC Rule 144, at all times after the effective
date of the first registration statement filed by the Company for the offering
of its securities to the general public;

                  (b) take such action, including the voluntary registration of
its Common Stock under Section 12 of the 1934 Act, as is necessary to enable the
Holders to utilize Form S-3 for the sale of their Registrable Securities, such
action to be taken as soon as practicable after the end of the fiscal year in
which the first registration statement filed by the Company for the offering of
its securities to the general public is declared effective;

                                       9
<PAGE>   12

                  (c) file with the SEC in a timely manner all reports and other
documents required of the Company under the Act and the 1934 Act; and

                  (d) furnish to any Holder, so long as the Holder owns any
Registrable Securities, forthwith upon request (i) a written statement by the
Company that it has complied with the reporting requirements of SEC Rule 144 (at
any time after ninety (90) days after the effective date of the first
registration statement filed by the Company), the Act and the 1934 Act (at any
time after it has become subject to such reporting requirements), or that it
qualifies as a registrant whose securities may be resold pursuant to Form S-3
(at any time after it so qualifies), (ii) a copy of the most recent annual or
quarterly report of the Company and such other reports and documents so filed by
the Company, and (iii) such other information as may be reasonably requested in
availing any Holder of any rule or regulation of the SEC that permits the
selling of any such securities without registration or pursuant to such form.

         1.12     Form S-3 Registration. In case the Company shall receive from
any Holder or Holders a written request or requests that the Company effect a
registration on Form S-3 and any related qualification or compliance with
respect to all or a part of the Registrable Securities owned by such Holder or
Holders, the Company will:

                  (a) promptly give written notice of the proposed registration,
and any related qualification or compliance, to all other Holders; and

                  (b) as soon as practicable, effect such registration and all
such qualifications and compliances as may be so requested and as would permit
or facilitate the sale and distribution of all or such portion of such Holder's
or Holders' Registrable Securities as are specified in such request, together
with all or such portion of the Registrable Securities of any other Holder or
Holders joining in such request as are specified in a written request given
within fifteen (15) days after receipt of such written notice from the Company;
provided, however, that the Company shall not be obligated to effect any such
registration, qualification or compliance, pursuant to this section 1.12: (1) if
Form S-3 is not available for such offering by the Holders; (2) if the Holders,
together with the holders of any other securities of the Company entitled to
inclusion in such registration, propose to sell Registrable Securities and such
other securities (if any) at an aggregate price to the public (net of any
underwriters' discounts or commissions) of less than $500,000; (3) if the
Company shall furnish to the Holders a certificate signed by the President of
the Company stating that in the good faith judgment of the Board of Directors of
the Company, it would be seriously detrimental to the Company and its
stockholders for such Form S-3 Registration to be effected at such time, in
which event the Company shall have the right to defer the filing of the Form S-3
registration statement for a period of not more than one hundred twenty (120)
days after receipt of the request of the Holder or Holders under this Section
1.12; provided, however, that the Company shall not utilize this right more than
once in any twelve (12) month period; (4) if the Company has, within the six (6)
month period preceding the date of such request, already effected one (1)
registration on Form S-3 for the Holders

                                       10
<PAGE>   13

pursuant to this Section 1.12; (5) if the Company has already effected a total
of six (6) registrations on Form S-3 for the Holders pursuant to this Section
1.12; or (6) in any particular jurisdiction in which the Company would be
required to qualify to do business or to execute a general consent to service of
process in effecting such registration, qualification or compliance.

                  (c) Subject to the foregoing, the Company shall file a
registration statement covering the Registrable Securities and other securities
so requested to be registered as soon as practicable after receipt of the
request or requests of the Holders. All expenses incurred in connection with a
registration requested pursuant to Section 1.12, including (without limitation)
all registration, filing, qualification, printer's and accounting fees and the
reasonable fees and disbursements of counsel for the Company, but excluding any
underwriters' discounts or commissions associated with Registrable Securities
and fees and expenses of counsel for any selling Holder (if other than counsel
to the Company), shall be borne by the Company. Registrations effected pursuant
to this Section 1.12 shall not be counted as demands for registration or
registrations effected pursuant to Sections 1.2 or 1.3, respectively.

         1.13     Assignment of Registration Rights. The rights to cause the
Company to register Registrable Securities pursuant to this Section 1 may be
assigned (but only with all related obligations) by a Holder to a transferee or
assignee of such securities who (i) either acquires all of the Registrable
Securities previously held by such Holder or, after such assignment or transfer,
holds at least 500,000 shares of Registrable Securities (subject to appropriate
adjustment for stock splits, stock dividends, combinations and other
recapitalizations), the Holder retaining such registration rights with respect
to the balance of such Holder's shares, (ii) is a partnership or partner that is
affiliated with the transferring Holder that is also a partnership, (iii) a
corporation that is a majority-owned subsidiary of the transferring Holder or
controls, is controlled by or is under common control with the transferring
Holder, (iv) is a limited liability company or member or former member
affiliated with the Holder that is a limited liability company, or (v) is a
party who controls, is controlled by or is under common control with the
transferring Holder; provided (a) the Company is, within a reasonable time after
such transfer, furnished with written notice of the name and address of such
transferee or assignee and the securities with respect to which such
registration rights are being assigned; (b) such transferee or assignee agrees
in writing to be bound by and subject to the terms and conditions of this
Agreement, including without limitation the provisions of Section 1.14 below;
and (c) such assignment shall be effective only if immediately following such
transfer the further disposition of such securities by the transferee or
assignee is restricted under the Act. For the purposes of determining the number
of shares of Registrable Securities held by a transferee or assignee, the
holdings of transferees and assignees of a partnership who are partners or
retired partners of such partnership (including spouses and ancestors, lineal
descendants and siblings of such partners or spouses who acquire Registrable
Securities by gift, will or intestate succession) shall be aggregated together
and with the partnership; provided that all assignees and transferees who would
not qualify individually for assignment of registration rights shall have a
single attorney-in-fact for the purpose of exercising any rights, receiving
notices or taking any action under this Section 1.

         1.14     "Market Stand-Off" Agreement. Each Investor and Founder hereby
agrees that, during the period of duration (not to exceed one hundred eighty
(180) days)

                                       11
<PAGE>   14

specified by the Company and an underwriter of common stock or other securities
of the Company, following the effective date of the registration statement for
an initial public offering of the Company's securities filed under the Act, it
shall not, to the extent requested by the Company and such underwriter, directly
or indirectly sell, offer to sell, contract to sell (including, without
limitation, any short sale), grant any option to purchase or otherwise transfer
or dispose of (other than to donees who agree to be similarly bound) any
securities of the Company held by it at any time during such period, except
common stock included in such registration; provided, however, that all
officers, directors and greater than five percent (5%) stockholders of the
Company enter into similar agreements. In order to enforce the foregoing
covenant, the Company may impose stop-transfer instructions with respect to the
securities of each Investor and Founder (and the shares or securities of every
other person subject to the foregoing restriction) until the end of such period.

         1.15     Termination of Registration Rights. No Holder shall be
entitled to exercise any right provided for in this Section 1 after the earlier
of (i) five (5) years following the consummation of the sale of securities
pursuant to a registration statement filed by the Company under the Act in
connection with the initial firm commitment underwritten offering of its
securities to the general public, the public offering price of which was not
less than $7.60 per share (adjusted to reflect subsequent stock dividends, stock
splits or recapitalizations), and $30,000,000 gross proceeds to the Company
(before deducting underwriters' discounts, commissions and expenses) or (ii) as
to any Holder, such time at which all Registrable Securities held by such Holder
can be sold in any three-month period without registration in compliance with
Rule 144 of the Act.

      2. Covenants of the Company.

         2.1      Delivery of Financial Statements. The Company shall deliver to
each Investor that holds at least 500,000 shares (as adjusted for subsequent
stock splits, stock dividends, combinations and other recapitalizations) of
Preferred Stock (or Common Stock issued upon conversion thereof) of the Company:

                  (a) as soon as practicable, but in any event within ninety
(90) days after the end of each fiscal year of the Company, an income statement
for such fiscal year, a balance sheet of the Company and statement of
stockholder's equity as of the end of such fiscal year, and a statement of cash
flows for such fiscal year, such year-end financial reports to be in reasonable
detail, prepared in accordance with generally accepted accounting principles
("GAAP"), and audited and certified by independent public accountants of
nationally recognized standing selected by the Company;

                  (b) as soon as practicable, but in any event within forty-five
(45) days after the end of each of the first three (3) quarters of each fiscal
year of the Company, an unaudited income statement for such quarter, statement
of cash flows for such quarter and an unaudited balance sheet as of the end of
such quarter;

                                       12
<PAGE>   15

                  (c) within thirty (30) days of the end of each month, an
unaudited income statement and statement of cash flows for such month, and a
balance sheet for and as of the end of such month, in reasonable detail;

                  (d) as soon as practicable, but in any event thirty (30) days
prior to the end of each fiscal year, a budget and business plan for the next
fiscal year, prepared on a monthly basis, including balance sheets and income
statements for such months and, as soon as prepared, any other budgets or
revised budgets prepared by the Company;

                  (e) with respect to the financial statements called for in
subsections (b) and (c) of this Section 2.1, an instrument executed by the Chief
Financial Officer or President of the Company and certifying that such financial
statements were prepared in accordance with GAAP consistently applied with prior
practice for earlier periods (with the exception of footnotes that may be
required by GAAP) and fairly present the financial condition of the Company and
its results of operation for the period specified, subject to year-end audit
adjustment;

                  (f) such other information relating to the financial
condition, business, prospects or corporate affairs of the Company as the
Investor or any assignee of the Investor may from time to time request,
provided, however, that the Company shall not be obligated under this subsection
(f) or any other subsection of Section 2.1 to provide information that it deems
in good faith to be a trade secret or similar confidential information.

         2.2      Inspection. The Company shall permit each Investor, at such
Investor's expense, to visit and inspect the Company's properties, to examine
its books of account and records and to discuss the Company's affairs, finances
and accounts with its officers, all at such reasonable times as may be requested
by the Investor; provided, however, that the Company shall not be obligated
pursuant to this Section 2.2 to provide access to any information that it
reasonably considers to be a trade secret or similar confidential information.

         2.3      Confidentiality, Assignment and Termination of Covenants.

                  (a) Each Investor receiving information under the covenants
set forth in Section 2.1 and Section 2.2 hereby agrees to hold in confidence and
trust and to act in a fiduciary manner with respect to all information so
provided; provided, however, that notwithstanding the foregoing, the Investors
may include summary financial information concerning the Company and general
statements concerning the nature and progress of the Company's business in their
reports to their limited partners.

                  (b) The covenants set forth in Section 2.1, Section 2.2 and
Section 2.7 shall terminate as to Investors and be of no further force or effect
(i) when the sale of securities pursuant to a registration statement filed by
the Company under the Act in connection with the firm commitment underwritten
offering of its securities to the general public is consummated, the public
offering price of which was not less than $7.60 per share (adjusted to reflect
subsequent stock dividends, stock splits or recapitalizations), and $30,000,000
in gross proceeds to the Company (before deducting underwriters' discounts,

                                       13
<PAGE>   16

commissions and expenses) or (ii) when the Company first becomes subject to the
periodic reporting requirements of Sections 12(g) or 15(d) of the 1934 Act,
whichever event shall first occur.

         2.4      Right of First Offer. Subject to the terms and conditions
specified in this paragraph 2.4, the Company hereby grants to each Investor a
right of first offer to purchase its Pro Rata Share (as hereinafter defined) (in
whole or in part) with respect to future sales by the Company of its
Shares (as hereinafter defined). Each Investor shall be entitled to assign or
apportion the right of first offer hereby granted it among itself and its
partners and affiliates (including in the case of a venture capital fund other
venture capital funds affiliated with such fund) in such proportions as it deems
appropriate. For purposes of this Section 2.4, a Investor's "Pro Rata Share" of
Shares shall mean that number of Shares that equals the proportion that (x) the
number of shares of Common Stock issued and held, or issuable upon conversion of
the Preferred Stock then held, by such Investor bears to (y) the total
number of shares of Common Stock of the Company then outstanding (assuming full
conversion and exercise of all convertible or exercisable securities).

    Each time the Company proposes to offer any shares of, or securities
convertible into or exercisable for any shares of, any class of its capital
stock ("Shares"), the Company shall first make an offering of such Shares to
each Investor in accordance with the following provisions:

                  (a) The Company shall deliver a notice by confirmed facsimile
transmission, certified mail or a nationally recognized overnight courier
service ("Notice") to each of the Investors stating (i) its bona fide intention
to offer such Shares, (ii) the number of such Shares to be offered, and (iii)
the price and a summary of the terms, if any, upon which it proposes to offer
such Shares.

                  (b) By written notification received by the Company within ten
(10) calendar days after receipt of the Notice, each Investor may elect to
purchase or obtain, at the price and on the terms specified in the Notice, up to
its Pro Rata Share of such Shares.

                  (c) If all Shares that the Investors are entitled to obtain
pursuant to subsection 2.4(b) are not elected to be obtained as provided in
subsection 2.4(b) hereof, the Company may, during the sixty (60)-day period
following the expiration of the period provided in subsection 2.4(b) hereof,
offer the remaining unsubscribed portion of such Shares to any person or persons
at a price not less than, and upon terms no more favorable to the offeree than
those specified in the Notice. If the Company does not enter into an agreement
for the sale of the Shares within such period, or if such agreement is not
consummated within thirty (30) days of the execution thereof, the right provided
hereunder shall be deemed to be revived and such Shares shall not be offered
unless first reoffered to the Investors in accordance herewith.

                  (d) The right of first offer in this Section 2.4 shall not be
applicable (i) to shares of Common Stock issuable or issued to employees,
consultants, or directors of the Company directly or pursuant to a stock option
plan, stock incentive or restricted stock plan

                                       14
<PAGE>   17

approved by the Board of Directors, (ii) to shares of Common Stock issued or
issuable in a firm commitment underwritten public offering in connection with
which all outstanding shares of Preferred Stock will be automatically converted
to Common Stock, (iii) to shares of Common Stock issued or issuable upon
conversion of shares of Preferred Stock or as a dividend or distribution on the
shares of Preferred Stock, (iv) to securities issued or issuable to banks or
equipment lessors, provided such issuances are for other than primarily equity
financing purposes, and (v) to shares of Series C Preferred Stock issued
pursuant to the Series C Agreement.

                  (e) The rights provided in this Section 2.4 shall terminate as
to all Investors and be of no further force or effect (i) when the sale of
securities pursuant to a registration statement filed by the Company under the
Act in connection with the firm commitment underwritten offering of its
securities to the general public is consummated, the public offering price of
which was not less than $7.60 per share (adjusted to reflect subsequent stock
dividends, stock splits or recapitalizations), and $30,000,000 in gross proceeds
to the Company (before deducting underwriters' discounts, commissions and
expenses) or (ii) when the Company first becomes subject to the periodic
reporting requirements of Sections 12(g) or 15(d) of the 1934 Act, whichever
event shall first occur.

         2.5      Board of Directors.

                  (a) With respect to those two (2) members of the Company's
Board of Directors that the Certificate of Incorporation provides are to be
elected by the holders of Series A Preferred Stock (the "Series A Board
Members"), the Investors hereby agree to vote all of their shares of Preferred
Stock now owned or hereafter acquired in favor of the election of one designee
of each of Sevin Rosen Fund V L.P. ("Sevin Rosen") and Olympic Venture Partners
("Olympic"), and with respect to the one member of the Company's Board of
Directors that the Certificate of Incorporation provides is to be elected by the
holders of the Series B Preferred Stock (the "Series B Board Member"), the
Investors hereby agree to vote all of their shares of Preferred Stock now owned
or hereafter acquired in favor of the election of the designee of Manchester
Bridge Principal LP (Olympic, Sevin Rosen and Manchester Bridge Principal LP
collectively, the "Venture Investors").

                  (b) With respect to those two (2) members of the Company's
Board of Directors that the Certificate of Incorporation provides are to be
elected by the holders of Common Stock (the "Common Board Members"), the
Founders and the Investors hereby agree to vote all of their shares of Common
Stock now owned or hereafter acquired in favor of the election of (1) the Chief
Executive Officer of the Company (or, if there is no Chief Executive Officer of
the Company, the President), and (2) a person designated by the holders of at
least a majority of the Common Stock.

                  (c) With respect to the remaining members of the Company's
Board of Directors that the Certificate of Incorporation provides are to be
elected by the holders of Common Stock and Preferred Stock (voting together as a
single class and on an as-converted basis) (the "Combined Board Members"), the
Founders and the Investors hereby agree to vote all of their shares of Common
Stock and Preferred Stock now owned or hereafter acquired in

                                       15
<PAGE>   18

favor of the election of only such persons as shall be acceptable to at least
five (5) of the other members of the Board of Directors.

                  (d) As long as Meritech Capital Partners ("Meritech") holds at
least 575,000 shares of Series C Preferred Stock of the Company, the Company
will permit a mutually acceptable representative of Meritech to attend all
meetings of the Company's Board of Directors (the "Board") and all committees
thereof (whether in person, telephonic or other) in a non-voting, observer
capacity and shall provide to Meritech, concurrently with the members of the
Board, and in the same manner, notice of such meeting and a copy of all
materials provided to such members. The confidentiality provisions of Section
2.3 of this Agreement shall apply to all information obtained by Meritech as a
result of its rights under this section.

                  (e) This Section 2.5 shall terminate in its entirety and be of
no further force or effect upon the earlier to occur of (i) the sale of
securities pursuant to a registration statement filed by the Company under the
Act in connection with the firm commitment underwritten offering of its
securities to the general public is consummated, the public offering price of
which was not less than $7.60 per share (adjusted to reflect subsequent stock
dividends, stock splits or recapitalizations), and $30,000,000 in gross proceeds
to the Company (before deducting underwriting discounts, commissions and
expenses), or (ii) the date upon which the Company first becomes subject to the
periodic reporting requirements of Sections 12(g) or 15(d) of the 1934 Act.

         2.6      Section 1202 Compliance. The Company shall:

                  (a) use its best efforts to comply with the reporting and
recordkeeping requirements of Section 1202 of the Internal Revenue Code of 1986,
as amended (the "Code"), and any regulations promulgated thereunder; and

                  (b) unless otherwise unanimously approved by the Board of
Directors, use its best efforts to not take any action that would cause the
Preferred Stock (or the Common Stock issuable upon conversion thereof) to lose
its status as "qualified small business stock" within the meaning of the Code.

     For purposes of the foregoing, any valuation or other determination
made by the Company's Board of Directors in good faith or for which there was,
at the time made, a reasonable basis in law or fact shall be conclusive.

         2.7      Indemnification Agreements. The Company shall enter into
Indemnification Agreements with the directors and executive officers of the
Company on or promptly as possible after the date hereof.

         2.8      Assignments of Rights of First Refusal. So long as shares of
Preferred Stock are outstanding, the Company agrees that, as a condition to
issuing any shares of Common Stock to any employee or director of the Company
under the Company's 1996 Stock Incentive Plan, or any successor or subsequent
stock option or stock purchase plan adopted by

                                       16
<PAGE>   19

the Company (each a "Plan"), such employee or director shall be required to
enter into an agreement with the Company that shall provide the Company, or any
assignee or assignees of the Company, with a right of first refusal to purchase
any shares that such employee or director proposes to sell or transfer to a
person other than the Company. The Company further covenants and agrees that, in
the event (i) an employee or director proposes to sell or transfer such shares
to a person other than the Company, (ii) the Company has not sold shares of the
Company's capital stock in an offering registered under the Act and (iii) the
Company has determined not to elect to exercise its right of first refusal to
purchase all of the shares that are proposed to be sold or transferred by such
employee or director (such balance of the shares not elected to be purchased by
the Company being the "Available Shares"), then the Company agrees that it shall
assign its right of first refusal to purchase the Available Shares to the
Investors by notice to the Investors made at least seven (7) business days prior
to the expiration of the Company's right of first refusal, and each Investor
shall thereafter have the right to elect to exercise such right of first refusal
to purchase its proportionate share of the Available Shares based on the number
of shares of Registrable Securities then held by such Investor bears to the
aggregate number of shares of Registrable Securities then held by all Investors
(excluding the Founders). The exercise of such right of first refusal by the
Investors shall be made subject to and in compliance with the terms applicable
to the right of first refusal in favor of the Company as set forth in the
applicable agreements used under the Plan.

         3.       Miscellaneous.

                  3.1 Successors and Assigns. Except as otherwise provided
herein, the terms and conditions of this Agreement shall inure to the benefit of
and be binding upon the respective successors and assigns of the parties
(including transferees of any shares of Registrable Securities). Nothing in this
Agreement, express or implied, is intended to confer upon any party other than
the parties hereto or their respective successors and assigns any rights,
remedies, obligations, or liabilities under or by reason of this Agreement,
except as expressly provided in this Agreement.

                  3.2 Governing Law. This Agreement shall be governed by and
construed under the laws of the State of Delaware as applied to agreements among
Delaware residents entered into and to be performed entirely within Delaware.

                  3.3 Counterparts. This Agreement may be executed in two or
more counterparts, each of which shall be deemed an original, but all of which
together shall constitute one and the same instrument.

                  3.4 Titles and Subtitles. The titles and subtitles used in
this Agreement are used for convenience only and are not to be considered in
construing or interpreting this Agreement.

                  3.5 Notices. Unless otherwise provided, any notice required or
permitted under this Agreement shall be given in writing and shall be deemed
effectively given upon personal delivery to the party to be notified or upon
delivery by confirmed facsimile transmission or nationally recognized overnight
courier service or upon deposit with the United

                                       17
<PAGE>   20

States Post Office, by registered or certified mail, postage prepaid and
addressed to the party to be notified at the address indicated for such party on
the signature page hereof, or at such other address as such party may designate
by ten (10) days' advance written notice to the other parties.

                  3.6 Expenses. If any action at law or in equity is necessary
to enforce or interpret the terms of this Agreement, the prevailing party shall
be entitled to reasonable attorneys' fees, costs and necessary disbursements in
addition to any other relief to which such party may be entitled.

                  3.7 Amendments and Waivers. Any term of this Agreement may be
amended and the observance of any term of this Agreement may be waived (either
generally or in a particular instance and either retroactively or
prospectively), only with the written consent of the Company and the holders of
at least sixty percent (60%) of the Registrable Securities then outstanding
(excluding the shares held by the Founders); provided, however, that in the
event such amendment or waiver adversely affects the rights and/or obligations
of the Founders under Section 1 of this Agreement in a different manner than the
other Holders, such amendment or waiver shall also require the written consent
of holders of at least a majority of the Common Stock (assuming the conversion
of all outstanding shares of Preferred Stock) then held by the Founders then
employed by the Company.

                  3.8 Severability. If one or more provisions of this Agreement
are held to be unenforceable under applicable law, such provision shall be
excluded from this Agreement, and the balance of the Agreement shall be
interpreted as if such provision were so excluded, and shall be enforceable in
accordance with its terms.

                  3.9 Aggregation of Stock. All shares of Registrable Securities
of the Company held or acquired by a stockholder and its Affiliates shall be
aggregated together for the purpose of determining the availability of any
rights under this Agreement. For purposes of the foregoing, the shares held by
any stockholder that (i) is a partnership or corporation shall be deemed to
include shares held by affiliated partnerships or the partners, retired partners
and stockholders of such holder or members of the "immediate family" (as defined
below) of any such partners, retired partners and stockholders, and any
custodian or trustee for the benefit of any of the foregoing persons and (ii) is
an individual shall be deemed to include shares held by any members of the
stockholder's immediate family ("immediate family" shall include any spouse,
father, mother, brother, sister, lineal descendant of spouse or lineal
descendant) or to any custodian or trustee for the benefit of any of the
foregoing persons.

                  3.10 Prior Agreement Superseded. This Agreement is the entire
understanding of the parties about its subject matter. This Agreement supersedes
all prior or contemporaneous agreements, including without limitation the Prior
Agreement, regarding the subject matter of this Agreement, and all such prior or
contemporaneous agreements are terminated and of no further force or effect.

                                       18
<PAGE>   21

         IN WITNESS WHEREOF, the parties have executed this Agreement as of the
date first above written.

                                       THE COMPANY:

                                       WEBRIDGE, INC.

                                       By:
                                          -------------------------------------
                                                   Gary N. Fielland
                                                   Chief Executive Officer

                             Address:  225 SW Broadway, Suite 400
                                       Portland, OR  97205

                        SIGNATURE PAGE TO WEBRIDGE, INC.
            SECOND AMENDED AND RESTATED INVESTORS' RIGHTS AGREEMENT

<PAGE>   22

                                  INVESTORS:

                                  MERITECH CAPITAL PARTNERS L.P.

                                  By:    Meritech Capital Associates L.L.C.
                                         its General Partner

                                  By:    Meritech Management Associates L.L.C.
                                         a managing member

                                  By:
                                     -------------------------------------------
                                         Michael B. Gordon, a managing member

                                  MERITECH CAPITAL AFFILIATES L.P.

                                  By:    Meritech Capital Associates L.L.C.
                                         its General Partner

                                  By:    Meritech Management Associates L.L.C.
                                         a managing member

                                  By:
                                     -------------------------------------------
                                         Michael B. Gordon, a managing member

                   Address:       90 Middlefield Road, Suite 201
                                  Menlo Park, CA  94025

                        SIGNATURE PAGE TO WEBRIDGE, INC.
            SECOND AMENDED AND RESTATED INVESTORS' RIGHTS AGREEMENT

<PAGE>   23

                                            INTEL CORPORATION

                                            By:
                                               ---------------------------------
                                                   (signature)
                                            Name:
                                                 -------------------------------
                                            Title:
                                                  ------------------------------

                             Address:       2200 Mission College Blvd.
                                            Santa Clara, California 95052

                        SIGNATURE PAGE TO WEBRIDGE, INC.
            SECOND AMENDED AND RESTATED INVESTORS' RIGHTS AGREEMENT

<PAGE>   24

                                            MANCHESTER BRIDGE PRINCIPAL LP

                                            By:    Manchester Principal LLC, its
                                                   General Partner

                                            By:
                                               ---------------------------------
                                                   (signature)
                                            Name:
                                                 -------------------------------
                                            Title:
                                                  ------------------------------

                             Address:       411 Theodore Fremd Avenue
                                            Rye, New York 10580

                        SIGNATURE PAGE TO WEBRIDGE, INC.
            SECOND AMENDED AND RESTATED INVESTORS' RIGHTS AGREEMENT

<PAGE>   25

                                         SEVIN ROSEN FUND V L.P.

                                         By:    SRB Associates V L.P.
                                                Its General Partner

                                         By:
                                            ---------------------------------
                                                (signature)

                                         Name:
                                              -------------------------------
                                         Title: General Partner

                                         SEVIN ROSEN V AFFILIATES FUND L.P.

                                         By:    SRB Associates V L.P.
                                                Its General Partner

                                         By:
                                            ---------------------------------
                                                (signature)

                                         Name:
                                              -------------------------------
                                         Title: General Partner

                                         SEVIN ROSEN BAYLESS MANAGEMENT COMPANY

                                         By:
                                            ---------------------------------
                                                (signature)

                                         Name:
                                              -------------------------------
                                         Title:
                                               ------------------------------

                             Address:    c/o The Sevin Rosen Funds
                                         13455 Noel Road, Suite 1670
                                         Dallas, Texas  75240

                        SIGNATURE PAGE TO WEBRIDGE, INC.
            SECOND AMENDED AND RESTATED INVESTORS' RIGHTS AGREEMENT

<PAGE>   26

                                         OLYMPIC VENTURE PARTNERS IV, L.P.
                                         By:    OVMC IV, L.L.C., General Partner

                                         By:
                                            ---------------------------------
                                                (signature)

                                         Name:
                                              -------------------------------
                                         Title: Member

                             Address:    2420 Carillon Point
                                         Kirkland, Washington  98033

                                         OVP IV ENTREPRENEURS FUND, L.P.
                                         By:    OVMC IV, L.L.C., General Partner

                                         By:
                                            ---------------------------------
                                                (signature)

                                         Name:
                                              -------------------------------
                                         Title: Member

                             Address:    2420 Carillon Point
                                         Kirkland, Washington  98033

                        SIGNATURE PAGE TO WEBRIDGE, INC.
            SECOND AMENDED AND RESTATED INVESTORS' RIGHTS AGREEMENT

<PAGE>   27

                              WORLDVIEW TECHNOLOGY PARTNERS I, L.P.
                              By: Worldview Capital I, L.P., its General Partner
                              By: Worldview Equity I, L.L.C., its General
                              Partner

                              By:
                                 -----------------------------------------------
                                     Mike Orsak, General Partner

                              WORLDVIEW TECHNOLOGY INTERNATIONAL I, L.P.
                              By: Worldview Capital I, L.P., its General Partner
                              By: Worldview Equity I, L.L.C., its General
                              Partner

                              By:
                                 -----------------------------------------------
                                     Mike Orsak, General Partner

                              WORLDVIEW STRATEGIC PARTNERS I, L.P.
                              By: Worldview Capital I, L.P., its General Partner
                              By: Worldview Equity I, L.L.C., its General
                              Partner

                              By:
                                 -----------------------------------------------
                                     Mike Orsak, General Partner

                      Address:       435 Tasso Street, Suite 120
                                     Palo Alto, CA  94301

                        SIGNATURE PAGE TO WEBRIDGE, INC.
            SECOND AMENDED AND RESTATED INVESTORS' RIGHTS AGREEMENT

<PAGE>   28

                                            KAUFMAN FAMILY LLC

                                            By:
                                               ---------------------------------
                                            Name:
                                                 -------------------------------
                                            Title:
                                                  ------------------------------

                             Address:       660 Madison Avenue, 15th Floor
                                            New York, NY  10021

                        SIGNATURE PAGE TO WEBRIDGE, INC.
            SECOND AMENDED AND RESTATED INVESTORS' RIGHTS AGREEMENT

<PAGE>   29

                                            INDIVIDUAL INVESTOR:

                                            ------------------------------------
                                            Gary N. Fielland

                             Address:       11255 NW Ridge Road
                                            Portland, Oregon  97229

                        SIGNATURE PAGE TO WEBRIDGE, INC.
            SECOND AMENDED AND RESTATED INVESTORS' RIGHTS AGREEMENT

<PAGE>   30

                                            INDIVIDUAL INVESTOR:

                                            ------------------------------------
                                            Lary L. Evans

                             Address:       508 Newhall CV
                                            Austin, Texas  78746

                        SIGNATURE PAGE TO WEBRIDGE, INC.
            SECOND AMENDED AND RESTATED INVESTORS' RIGHTS AGREEMENT

<PAGE>   31

                               INDIVIDUAL INVESTOR:

                               -------------------------------------------------
                               William W. Lattin, as Trustee for The William and
                               June Lattin Revocable Living Trust

                    Address:   The William and June Lattin Revocable
                               Living Trust
                               10911 NW Quarry Road
                               Portland, Oregon  97231

                        SIGNATURE PAGE TO WEBRIDGE, INC.
            SECOND AMENDED AND RESTATED INVESTORS' RIGHTS AGREEMENT

<PAGE>   32

                                            INDIVIDUAL INVESTOR:

                                            ------------------------------------
                                            Gregory Darmohray

                             Address:       8350 NW Ash
                                            Portland, OR  97229

                        SIGNATURE PAGE TO WEBRIDGE, INC.
            SECOND AMENDED AND RESTATED INVESTORS' RIGHTS AGREEMENT

<PAGE>   33

                                            INDIVIDUAL INVESTOR:

                                            ------------------------------------
                                            Marcia Hooper

                             Address:       4 Claybrook Road
                                            Dover, MA  02030

                        SIGNATURE PAGE TO WEBRIDGE, INC.
            SECOND AMENDED AND RESTATED INVESTORS' RIGHTS AGREEMENT

<PAGE>   34

                                            INDIVIDUAL INVESTOR:

                                            ------------------------------------
                                            C. Scott Gibson

                             Address:       1900 Twin Points Road
                                            Lake Oswego, Oregon  97034

                        SIGNATURE PAGE TO WEBRIDGE, INC.
            SECOND AMENDED AND RESTATED INVESTORS' RIGHTS AGREEMENT

<PAGE>   35

                                            FOUNDER:

                                            ------------------------------------
                                            Gary N. Fielland

                             Address:       c/o Webridge, Inc.
                                            225 SW Broadway, Suite 400
                                            Portland, OR  97205

                        SIGNATURE PAGE TO WEBRIDGE, INC.
            SECOND AMENDED AND RESTATED INVESTORS' RIGHTS AGREEMENT

<PAGE>   36

                                            FOUNDER:

                                            ------------------------------------
                                            Mark S. Anastas

                             Address:       c/o Webridge, Inc.
                                            225 SW Broadway, Suite 400
                                            Portland, OR  97205

                        SIGNATURE PAGE TO WEBRIDGE, INC.
            SECOND AMENDED AND RESTATED INVESTORS' RIGHTS AGREEMENT

<PAGE>   37

                                            FOUNDER:

                                            ------------------------------------
                                            Gary M. Raetz

                             Address:       c/o Webridge, Inc.
                                            225 SW Broadway, Suite 400
                                            Portland, OR  97205

                        SIGNATURE PAGE TO WEBRIDGE, INC.
            SECOND AMENDED AND RESTATED INVESTORS' RIGHTS AGREEMENT

<PAGE>   38

                                            FOUNDER:

                                            ------------------------------------
                                            Arun Garg

                             Address:       c/o Webridge, Inc.
                                            225 SW Broadway, Suite 400
                                            Portland, OR  97205

                        SIGNATURE PAGE TO WEBRIDGE, INC.
            SECOND AMENDED AND RESTATED INVESTORS' RIGHTS AGREEMENT

<PAGE>   39

                                            FOUNDER:

                                            ------------------------------------
                                            Jon F. Jackson

                             Address:       c/o Webridge, Inc.
                                            225 SW Broadway, Suite 400
                                            Portland, OR  97205

                        SIGNATURE PAGE TO WEBRIDGE, INC.
            SECOND AMENDED AND RESTATED INVESTORS' RIGHTS AGREEMENT

<PAGE>   40

                                            FOUNDER:

                                            ------------------------------------
                                            Jeffrey J. Berkowitz

                             Address:       c/o Webridge, Inc.
                                            225 SW Broadway, Suite 400
                                            Portland, OR  97205

                        SIGNATURE PAGE TO WEBRIDGE, INC.
            SECOND AMENDED AND RESTATED INVESTORS' RIGHTS AGREEMENT

<PAGE>   41

                                            FOUNDER:

                                            ------------------------------------
                                            Joseph A. Hull

                             Address:       c/o Webridge, Inc.
                                            225 SW Broadway, Suite 400
                                            Portland, OR  97205

                        SIGNATURE PAGE TO WEBRIDGE, INC.
            SECOND AMENDED AND RESTATED INVESTORS' RIGHTS AGREEMENT

<PAGE>   42

                                            FOUNDER:

                                            ------------------------------------
                                            Gary A. Whitney

                             Address:       c/o Webridge, Inc.
                                            225 SW Broadway, Suite 400
                                            Portland, OR  97205

                        SIGNATURE PAGE TO WEBRIDGE, INC.
            SECOND AMENDED AND RESTATED INVESTORS' RIGHTS AGREEMENT

<PAGE>   43

                                            FOUNDER:

                                            ------------------------------------
                                            Steven "Shap" Shapiro

                             Address:       c/o Webridge, Inc.
                                            225 SW Broadway, Suite 400
                                            Portland, OR  97205

                        SIGNATURE PAGE TO WEBRIDGE, INC.
            SECOND AMENDED AND RESTATED INVESTORS' RIGHTS AGREEMENT

<PAGE>   44

                                            FOUNDER:

                                            ------------------------------------
                                            Peter J. Bray

                             Address:       c/o Webridge, Inc.
                                            225 SW Broadway, Suite 400
                                            Portland, OR  97205

                        SIGNATURE PAGE TO WEBRIDGE, INC.
            SECOND AMENDED AND RESTATED INVESTORS' RIGHTS AGREEMENT

<PAGE>   45

                                            FOUNDER:

                                            ------------------------------------
                                            Laura M. Freeman

                             Address:       c/o Webridge, Inc.
                                            225 SW Broadway, Suite 400
                                            Portland, OR  97205

                        SIGNATURE PAGE TO WEBRIDGE, INC.
         SECOND AMENDED AND RESTATED INVESTORS' RIGHTS AGREEMENT

<PAGE>   46

                                            FOUNDER:

                                            ------------------------------------
                                            Satish M. Doshi

                             Address:       c/o Webridge, Inc.
                                            225 SW Broadway, Suite 400
                                            Portland, OR  97205

                        SIGNATURE PAGE TO WEBRIDGE, INC.
         SECOND AMENDED AND RESTATED INVESTORS' RIGHTS AGREEMENT

<PAGE>   47

                                            FOUNDER:

                                            ------------------------------------
                                            Steve P. Paquin

                             Address:       c/o Webridge, Inc.
                                            225 SW Broadway, Suite 400
                                            Portland, OR  97205

                        SIGNATURE PAGE TO WEBRIDGE, INC.
         SECOND AMENDED AND RESTATED INVESTORS' RIGHTS AGREEMENT

<PAGE>   48

                                            FOUNDER:

                                            ------------------------------------
                                            Phillip E. Hochstetler

                             Address:       c/o Webridge, Inc.
                                            225 SW Broadway, Suite 400
                                            Portland, OR  97205

                        SIGNATURE PAGE TO WEBRIDGE, INC.
            SECOND AMENDED AND RESTATED INVESTORS' RIGHTS AGREEMENT

<PAGE>   49

                                            FOUNDER:

                                            ------------------------------------
                                            Robert D. Beck

                             Address:       c/o Webridge, Inc.
                                            225 SW Broadway, Suite 400
                                            Portland, OR  97205

                        SIGNATURE PAGE TO WEBRIDGE, INC.
            SECOND AMENDED AND RESTATED INVESTOR'S RIGHTS AGREEMENT

<PAGE>   50

                                            FOUNDER:

                                            ------------------------------------
                                            Sylvia Giroux

                             Address:       6123 SW Frances
                                            Hillsboro, OR  97124

                        SIGNATURE PAGE TO WEBRIDGE, INC.
            SECOND AMENDED AND RESTATED INVESTORS' RIGHTS AGREEMENT

<PAGE>   51

                                   SCHEDULE A
                       SCHEDULE OF INVESTORS AND FOUNDERS

INVESTORS
---------
MERITECH CAPITAL PARTNERS
90 Middlefield Road, Suite 201
Menlo Park, CA  94025

INTEL CORPORATION
2200 Mission College Blvd.
Santa Clara, CA  95052

MANCHESTER BRIDGE PRINCIPAL LP
411 Theodore Fremd Avenue
Rye, New York 10580

SEVIN ROSEN FUND V L.P.
SEVIN ROSEN V AFFILIATES FUND L.P.
SEVIN ROSEN BAYLESS MANAGEMENT COMPANY
13455 Noel Road, Suite 1670
Dallas, Texas 75240

OLYMPIC VENTURE PARTNERS IV, L.P.
OVP IV ENTREPRENEURS FUND, L.P.
2420 Carillon Point
Kirkland, Washington 98033

GARY N. FIELLAND
11255 NW Ridge Road
Portland, Oregon 97229

C. SCOTT GIBSON
1900 Twin Points Road
Lake Oswego, Oregon 97034

WILLIAM W. LATTIN
The William and June Lattin Revocable Living Trust
10911 NW Quarry Road
Portland, Oregon 97231

LARY EVANS
508 Newhall CV

                        SIGNATURE PAGE TO WEBRIDGE, INC.
            SECOND AMENDED AND RESTATED INVESTORS' RIGHTS AGREEMENT

<PAGE>   52

Austin, Texas 78746

WORLDVIEW TECHNOLOGY PARTNERS I, L.P.
WORLDVIEW TECHNOLOGY INTERNATIONAL I, L.P.
WORLDVIEW STRATEGIC PARTNERS I, L.P.
435 Tasso Street
Suite 120
Palo Alto, CA  94301

KAUFMAN FAMILY LLC
660 Madison Avenue, 15th Floor
New York, NY  10021

GREGORY DARMOHRAY
8350 NW Ash
Portland, OR  97229

MARCIA HOOPER
4 Claybrook Road
Dover, MA  02030

FOUNDERS
--------

MARK S. ANASTAS
c/o Webridge, Inc.
225 SW Broadway, Suite 400
Portland, OR  97205

ROBERT D. BECK
c/o Webridge, Inc.
225 SW Broadway, Suite 400
Portland, OR  97205

JEFFREY J. BERKOWITZ
c/o Webridge, Inc.
225 SW Broadway, Suite 400
Portland, OR  97205

PETER J. BRAY
c/o Webridge, Inc.
225 SW Broadway, Suite 400
Portland, OR  97205

SATISH M. DOSHI
c/o Webridge, Inc.

                                      A-50

<PAGE>   53

225 SW Broadway, Suite 400
Portland, OR  97205

GARY N. FIELLAND
c/o Webridge, Inc.
225 SW Broadway, Suite 400
Portland, OR  97205

LAURA M. FREEMAN
c/o Webridge, Inc.
225 SW Broadway, Suite 400
Portland, OR  97205

ARUN GARG
c/o Webridge, Inc.
225 SW Broadway, Suite 400
Portland, OR  97205

PHILLIP E. HOCHSTETLER
c/o Webridge, Inc.
225 SW Broadway, Suite 400
Portland, OR  97205

JOSEPH A. HULL
c/o Webridge, Inc.
225 SW Broadway, Suite 400
Portland, OR  97205

JON F. JACKSON
c/o Webridge, Inc.
225 SW Broadway, Suite 400
Portland, OR  97205

STEVE P. PAQUIN
c/o Webridge, Inc.
225 SW Broadway, Suite 400
Portland, OR  97205

GARY M. RAETZ
c/o Webridge, Inc.
225 SW Broadway, Suite 400
Portland, OR  97205

STEVEN "SHAP" SHAPIRO
c/o Webridge, Inc.

                                      A-51

<PAGE>   54

225 SW Broadway, Suite 400
Portland, OR  97205

GARY A. WHITNEY
c/o Webridge, Inc.
225 SW Broadway, Suite 400
Portland, OR  97205

SYLVIA GIROUX
6123 SW Frances
Hillsboro, OR  97124

                                      A-52

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00003-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00003-of-00352.parquet"}]]