VERTICALNET INC
S-4, 2000-11-16
ADVERTISING
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<PAGE>   1

   AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON NOVEMBER 16, 2000
                                                     REGISTRATION NO. 333-
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                            ------------------------
                                    FORM S-4
                             REGISTRATION STATEMENT
                                     UNDER
                           THE SECURITIES ACT OF 1933
                            ------------------------

                               VERTICALNET, INC.
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)

<TABLE>
<S>                                  <C>                                  <C>
            PENNSYLVANIA                             7319                              23-2815834
  (STATE OR OTHER JURISDICTION OF        (PRIMARY STANDARD INDUSTRIAL               (I.R.S. EMPLOYER
   INCORPORATION OR ORGANIZATION)        CLASSIFICATION CODE NUMBER)             IDENTIFICATION NUMBER)
</TABLE>

                            ------------------------
                               VERTICALNET, INC.
                                700 DRESHER ROAD
                          HORSHAM, PENNSYLVANIA 19044
                                 (215) 328-6100
  (ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE NUMBER, INCLUDING AREA CODE, OF
                   REGISTRANT'S PRINCIPAL EXECUTIVE OFFICES)
                            ------------------------
                          JAMES W. MCKENZIE, JR., ESQ.
              SENIOR VICE PRESIDENT, GENERAL COUNSEL AND SECRETARY
                               VERTICALNET, INC.
                                700 DRESHER ROAD
                          HORSHAM, PENNSYLVANIA 19044
                                 (215) 328-6100
 (NAME, ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE NUMBER, INCLUDING AREA CODE,
                             OF AGENT FOR SERVICE)
                            ------------------------
                                   COPIES TO:

<TABLE>
<S>                                                    <C>
                   JAMES H. CARROLL                                       RICHARD D. PRITZ
                  COOLEY GODWARD LLP                                    DEWEY BALLANTINE LLP
           2595 CANYON BOULEVARD, SUITE 250                         1301 AVENUE OF THE AMERICAS
             BOULDER, COLORADO 80302-6737                             NEW YORK, NEW YORK 10128
                    (303) 546-4000                                         (212) 259-6310
</TABLE>

     APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE OF THE SECURITIES TO THE
PUBLIC:  As soon as practicable after this registration statement becomes
effective and upon consummation of the transactions described in the enclosed
prospectus.

     If the securities being registered on this Form are being offered in
connection with the formation of a holding company and there is compliance with
General Instruction G, check the following box.  [ ]

     If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, check the following box and
list the Securities Act registration statement number of the earlier effective
registration statement for the same offering.  [ ]

     If this Form is a post-effective amendment filed pursuant to Rule 462(d)
under the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering.  [ ]
                            ------------------------
                        CALCULATION OF REGISTRATION FEE

<TABLE>
<CAPTION>
-----------------------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------------------
     TITLE OF EACH CLASS             PROPOSED MAXIMUM          PROPOSED MAXIMUM            AGGREGATE               AMOUNT OF
OF SECURITIES TO BE REGISTERED  AMOUNT TO BE REGISTERED(1)  OFFERING PRICE PER UNIT    OFFERING PRICE(2)      REGISTRATION FEE(3)
-----------------------------------------------------------------------------------------------------------------------------------
<S>                             <C>                         <C>                      <C>                     <C>
Common stock, par value $.01
  per share...................       6,348,912 shares                N/A                  $87,506,595               $23,102
-----------------------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------------------
</TABLE>

(1) Represents the maximum number of shares of VerticalNet common stock
    estimated to be issuable upon the consummation of the exchange offer and
    subsequent merger of Truckee Acquisition Co., a Delaware corporation and a
    wholly owned subsidiary of VerticalNet, with and into SierraCities.com Inc.
    based on the exchange ratio of .3333 of a share of VerticalNet common stock
    (the maximum exchange ratio pursuant to the Agreement and Plan of Merger
    dated as of November 6, 2000 among VerticalNet, SierraCities and Truckee) to
    be exchanged for each share of SierraCities common stock.

(2) Estimated solely for the purpose of calculating the registration fee
    pursuant to Rule 457(f)(1) and (3) and Rule 457(c) of the Securities Act of
    1933, based on the product of (i) $4.59385, the average of the high and low
    sales prices of SierraCities common stock on November 13, 2000, as reported
    by the Nasdaq National Market, and (ii) 19,048,640 shares of SierraCities
    common stock, the number of shares of SierraCities common stock outstanding
    at the close of business on November 13, 2000.

(3) Computed in accordance with Rule 457(f) under the Securities Act to be
    $23,102, which is equal to .000264 multiplied by the proposed maximum
    aggregate offering price of $87,506,595.

     THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT SHALL
FILE A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS REGISTRATION
STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(a) OF
THE SECURITIES ACT OF 1933 OR UNTIL THIS REGISTRATION STATEMENT SHALL BECOME
EFFECTIVE ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SAID SECTION 8(a),
MAY DETERMINE.
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
<PAGE>   2

      THE INFORMATION CONTAINED IN THIS PROSPECTUS MAY BE CHANGED. WE MAY NOT
      COMPLETE THE EXCHANGE OFFER AND ISSUE THESE SECURITIES UNTIL THE
      REGISTRATION STATEMENT FILED WITH THE SECURITIES AND EXCHANGE COMMISSION
      IS EFFECTIVE. THIS PROSPECTUS IS NOT AN OFFER TO SELL THESE SECURITIES AND
      WE ARE NOT SOLICITING AN OFFER TO BUY THESE SECURITIES IN ANY STATE WHERE
      THE OFFER IS NOT PERMITTED.

                PRELIMINARY PROSPECTUS, DATED NOVEMBER 16, 2000

                               (VERTICALNET LOGO)

            OFFER TO EXCHANGE EACH OUTSTANDING SHARE OF COMMON STOCK
                                       OF

                             SIERRACITIES.COM INC.
                  FOR A FRACTION OF A SHARE OF COMMON STOCK OF

                               VERTICALNET, INC.
       HAVING A VALUE OF $7.00, SUBJECT TO ADJUSTMENT AS DESCRIBED BELOW.

THE OFFER AND WITHDRAWAL RIGHTS WILL EXPIRE AT 12:00 MIDNIGHT, NEW YORK CITY
TIME, ON DECEMBER 14, 2000 UNLESS EXTENDED.

     On November 6, 2000, we entered into a merger agreement with SierraCities.
The board of directors of SierraCities has approved the merger agreement and
determined that the offer is fair to, and in the best interests of, SierraCities
stockholders. The SierraCities board of directors unanimously recommends that
SierraCities stockholders accept the offer and tender their shares pursuant to
the offer.

     Through Truckee Acquisition Co., our wholly owned subsidiary, we are
offering to exchange a fraction of a share of our common stock based on an
exchange ratio, described below, for each outstanding share of SierraCities
common stock that is validly tendered and not properly withdrawn. If the average
of the closing prices per share of our common stock on Nasdaq for each of the
ten consecutive trading days ending on the trading day that is two days prior to
the date on which we accept the shares tendered in the offer, which we refer to
as the VerticalNet average trading price, is (1) less than $21.00, the
SierraCities stockholders shall receive .3333 of a VerticalNet share for each
SierraCities share, (2) at least $21.00 but less than or equal to $35.00,
SierraCities stockholders shall receive a fraction of a VerticalNet share equal
to $7.00 divided by the VerticalNet average trading price for each SierraCities
share, (3) more than $35.00 but less than or equal to $51.00, the SierraCities
stockholders shall receive .20 of a VerticalNet share for each SierraCities
share and (4) more than $51.00, SierraCities stockholders shall receive a
fraction of a VerticalNet share equal to $10.20 divided by the VerticalNet
average trading price for each SierraCities share. SierraCities has the right to
terminate the merger agreement if the VerticalNet average trading price is less
than $15.00. The VerticalNet average trading price cannot be determined at this
time.

     The exchange offer will be followed by a merger in which our common stock
will be issued at the same exchange ratio used in the exchange offer. On
November 15, 2000, the closing price for our shares was $20.1875. If the
VerticalNet average trading price were equal to this closing price, a
SierraCities stockholder would receive shares of our common stock with a value
of approximately $6.73 per share of SierraCities common stock. We urge you to
obtain a current quote for our shares.

     Our obligation to exchange our common stock for SierraCities common stock
is subject to the conditions listed under "The Offer -- Conditions of the
Offer." Our common stock trades on the Nasdaq National Market under the symbol
"VERT." SierraCities common stock trades on the Nasdaq National Market under the
symbol "BTOB."

     SEE "RISK FACTORS" BEGINNING ON PAGE 21 FOR A DISCUSSION OF FACTORS THAT
YOU SHOULD CONSIDER IN CONNECTION WITH THE OFFER.

     WE ARE NOT ASKING YOU FOR A PROXY AND YOU ARE REQUESTED NOT TO SEND US A
PROXY.

     Neither the Securities and Exchange Commission nor any state securities
commission has approved or disapproved of these securities or passed upon the
adequacy or accuracy of this prospectus. Any representation to the contrary is a
criminal offense.

                The date of this prospectus is December   , 2000
<PAGE>   3

                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                PAGE
                                                                ----
<S>                                                             <C>
QUESTIONS AND ANSWERS ABOUT THE PROPOSED COMBINATION........    iii

WHERE YOU CAN FIND MORE INFORMATION.........................    vii

FORWARD-LOOKING STATEMENTS MAY PROVE INACCURATE.............    viii

SUMMARY.....................................................      1
  The Proposed Combination..................................      1
  The Companies.............................................      1
  Reasons for the Proposed Combination......................      2
  Support of SierraCities' Board of Directors...............      2
  The Offer.................................................      3

SELECTED HISTORICAL AND PRO FORMA FINANCIAL DATA............      6
  Selected Historical Financial Data of VerticalNet.........      6
  Selected Historical Financial Data of SierraCities........      8
  Selected Unaudited Pro Forma Combined Condensed Financial
     Data...................................................     10
  Comparative Per Share Data................................     11
  Comparative Market Price Information......................     12

UNAUDITED PRO FORMA COMBINED CONDENSED FINANCIAL
  STATEMENTS................................................     13

RISK FACTORS................................................     21
  Risks Related to the Proposed Offer and Merger............     21
  Risks Related to Our Business.............................     23

THE COMPANIES...............................................     38

BACKGROUND OF THE OFFER.....................................     40

THE OFFER...................................................     42
  Basic Terms...............................................     42
  Timing of the Offer.......................................     43
  Extension, Termination and Amendment......................     43
  Exchange of SierraCities Shares; Delivery of Our Common
     Stock..................................................     44
  Cash Instead of Fractional Shares of Our Common Stock.....     45
  Withdrawal Rights.........................................     45
  Procedure for Tendering...................................     46
  Guaranteed Delivery.......................................     47
  Purpose of the Offer; The Merger; Appraisal Rights........     48
  Conditions of the Offer...................................     49
  Regulatory Approvals......................................     51
  Effects of Offer..........................................     52
  Fractional Shares.........................................     53
  Relationships With SierraCities...........................     53
  Accounting Treatment......................................     54
  Fees and Expenses.........................................     54

THE MERGER AGREEMENT AND THE TENDER AGREEMENTS..............     55
  The Merger Agreement......................................     55
     The Offer..............................................     55
     The Merger.............................................     55
     Exchange Agent; Procedures for Exchange of
      Certificates..........................................     56
     SierraCities Board of Directors........................     57
</TABLE>

                                        i
<PAGE>   4

<TABLE>
<CAPTION>
                                                                PAGE
                                                                ----
<S>                                                             <C>
     SierraCities Stock Options and Employee Benefits.......     57
     Conduct of Business Pending the Merger.................     57
     SierraCities Stockholders Meeting......................     58
     Other Offers...........................................     58
     Directors and Officers Insurance and Indemnification...     59
     Conditions to the Completion of the Merger.............     60
     Termination Events; Termination Fee....................     60
     Other Provisions.......................................     62
     The Tender Agreements..................................     62
     Parties................................................     62
     Agreements to Tender...................................     63
     Proxy..................................................     63

INTERESTS OF CERTAIN PERSONS................................     64

MATERIAL FEDERAL INCOME TAX CONSEQUENCES....................     65

MARKET PRICES AND DIVIDENDS.................................     68

DESCRIPTION OF VERTICALNET CAPITAL STOCK....................     69

COMPARISON OF RIGHTS OF HOLDERS OF VERTICALNET SHARES AND
  SIERRACITIES SHARES.......................................     71

LEGAL MATTERS...............................................     85

EXPERTS.....................................................     85

SCHEDULE I  DIRECTORS AND EXECUTIVE OFFICERS OF
  VERTICALNET...............................................    S-1

LIST OF ANNEXES
     Annex A  Agreement and Plan of Merger..................    A-1
     Annex B  Form of Tender Agreement......................    B-1
</TABLE>

     This prospectus incorporates important business and financial information
about VerticalNet and SierraCities that is not included in or delivered with
this document. This information is available at the Internet Web site that the
SEC maintains at http://www.sec.gov, as well as from other sources. See "Where
You Can Find More Information" on page vii.

     You may also request copies of these documents from us, without charge,
upon written or oral request to the information agent for the offer.

     The information agent for the offer is:

                             D.F. King & Co., Inc.
                                77 Water Street
                               New York, NY 10005
                Bankers and brokers call collect: (212) 425-1685
                   All others call toll free: (800) 628-8510

     You must make your request for information no later than December 7, 2000.

                                       ii
<PAGE>   5

              QUESTIONS AND ANSWERS ABOUT THE PROPOSED COMBINATION

Q: WHAT ARE VERTICALNET AND SIERRACITIES PROPOSING?

A: VerticalNet proposes to acquire all the outstanding shares of SierraCities
   common stock. We have entered into a merger agreement with SierraCities
   pursuant to which we are offering, through Truckee Acquisition Co., our
   wholly owned subsidiary, to exchange a fraction of a share of our common
   stock for each outstanding share of SierraCities common stock. After the
   offer is completed, subject to approval by the stockholders of SierraCities
   if necessary, Truckee will merge with SierraCities. As a result of the offer
   and the merger, SierraCities will become a wholly owned subsidiary of
   VerticalNet.

Q: WHAT WOULD I RECEIVE IN EXCHANGE FOR MY SIERRACITIES SHARES?

A: If the VerticalNet average trading price is (1) less than $21.00, the
   SierraCities stockholders shall receive .3333 of a VerticalNet share for each
   SierraCities share, (2) at least $21.00 but less than or equal to $35.00,
   SierraCities stockholders shall receive a fraction of a VerticalNet share
   equal to $7.00 divided by the VerticalNet average trading price for each
   SierraCities share, (3) more than $35.00 but less than or equal to $51.00,
   the SierraCities stockholders shall receive .20 of a VerticalNet share for
   each SierraCities share and (4) more than $51.00, SierraCities stockholders
   shall receive a fraction of a VerticalNet share equal to $10.20 divided by
   the VerticalNet average trading price for each SierraCities share.
   SierraCities has the right to terminate the merger agreement if the
   VerticalNet average trading price is less than $15.00. The exchange offer
   will be followed by a merger in which our stock will be issued at the same
   exchange ratio used in the exchange offer.

   The VerticalNet average trading price used to calculate the exchange ratio
   will be the average closing price of our common stock share on Nasdaq over
   the ten consecutive trading day period that ends two days prior to the date
   on which we accept the shares tendered in the offer.

Q: HOW CAN I FIND OUT THE FINAL EXCHANGE RATIO?

A: We will notify you by issuing a press release announcing the final exchange
   ratio and filing that press release with the SEC. SierraCities stockholders
   can call our information agent, D.F. King & Co., at any time toll free at
   (800) 628-8510 for the VerticalNet average trading price for the preceding
   ten trading days and the exchange ratio that would be in effect based on that
   price. For a table illustrating examples of VerticalNet average trading
   prices, the resulting exchange ratios and illustrations of the approximate
   value you would receive for your SierraCities shares, please see "The
   Offer -- Basic Terms -- Illustrative Table of Exchange Ratios and Value of
   Offer/Merger Consideration" beginning on page 42.

Q: HOW LONG WILL IT TAKE TO COMPLETE THE OFFER AND THE MERGER?

A: We hope to complete the offer in December 2000. We expect to complete the
   merger without a stockholder vote shortly after we complete the offer if we
   acquire 90% of the SierraCities shares in the offer. If less than 90% of the
   shares are tendered in the offer, then the merger will require SierraCities
   stockholder approval at a special meeting. If a special meeting is required,
   the merger will not close until the first quarter of 2001. We must also
   obtain regulatory clearances prior to completion of the offer and the merger.

Q: WILL I HAVE TO PAY ANY FEES OR EXPENSES IF I TENDER MY SIERRACITIES SHARES?

A: If you are the record owner of your shares and you tender your shares in the
   offer, you will not have to pay brokerage fees or incur similar expenses. If
   you own your shares through a broker or other nominee and your broker tenders
   the shares on your behalf, your broker may charge you a fee for doing so. You
   should consult your broker or nominee to determine whether any charges will
   apply.

                                       iii
<PAGE>   6

Q: DOES SIERRACITIES SUPPORT THE OFFER AND THE MERGER?

A: Yes. SierraCities' board of directors has determined that the offer is fair
   to, and in the best interests of, SierraCities stockholders and unanimously
   recommends that SierraCities stockholders accept the offer and tender their
   shares in the offer. SierraCities' board of directors has approved and
   declared advisable the merger agreement and the merger. Information about the
   recommendation of SierraCities' board of directors is more fully set forth in
   SierraCities' Solicitation/Recommendation Statement on Schedule 14D-9, which
   is being mailed to SierraCities stockholders together with this prospectus.

Q: HAS SIERRACITIES RECEIVED A FAIRNESS OPINION IN CONNECTION WITH THE OFFER AND
   THE MERGER?

A: Yes. SierraCities has received an opinion from Donaldson, Lufkin & Jenrette
   Securities Corporation, dated November 6, 2000, to the effect that, as of
   that date, the consideration to be received by SierraCities stockholders
   pursuant to the merger agreement is fair to them from a financial point of
   view.

Q: HAVE ANY SIERRACITIES STOCKHOLDERS AGREED TO TENDER THEIR SHARES?

A: Yes. Directors and executive officers and entities affiliated with these
   directors and executive officers, who collectively held approximately 20% of
   the outstanding common stock of SierraCities as of November 6, 2000, have
   agreed to tender their shares in the offer.

Q: WHAT PERCENTAGE OF OUR COMMON STOCK WILL SIERRACITIES STOCKHOLDERS OWN AFTER
   THE OFFER AND THE MERGER?

A: Because we do not know the final exchange ratio at this time, we cannot
   determine what percentage of our common stock former stockholders of
   SierraCities will own after the offer and the merger. If the VerticalNet
   average trading price is less than or equal to $51.00, and if we obtain all
   of the shares of SierraCities pursuant to the offer and merger, former
   stockholders of SierraCities will own between 4% and 7% of the outstanding
   shares of our common stock, based upon the number of shares of our common
   stock and SierraCities common stock outstanding on November 6, 2000. If the
   VerticalNet average trading price is more than $51.00, former stockholders of
   SierraCities could own less than 4% of the outstanding shares of our common
   stock.

Q: WHAT ARE THE CONDITIONS TO THE OFFER?

A: The offer is subject to several conditions, including:

     - two thirds of the outstanding SierraCities shares, on a fully-diluted
       basis, shall have been tendered and not withdrawn;

     - waiting periods under applicable antitrust laws shall have expired or
       been terminated;

     - the registration statement of which this prospectus is a part shall have
       been declared effective by the SEC;

     - no statute, rule, injunction or other similar potential obstacle to our
       ability to consummate the offer and the merger shall have been
       instituted;

     - SierraCities shall not have breached any covenant, representation or
       warranty in a material manner;

     - no material adverse change in SierraCities' business shall have occurred;

     - SierraCities shall have executed a waiver agreement to remove some of its
       lease portfolio assets from its consolidated balance sheet, the execution
       of which will not involve transactions with any third parties; and

                                       iv
<PAGE>   7

   The merger agreement provides that we may not purchase shares in the offer
   unless, as of the date of the expiration of the offer, we and SierraCities
   shall have been advised by Cooley Godward LLP and Dewey Ballantine LLP,
   respectively, that it is their opinion that, although the matter is not free
   from doubt, for U.S. federal income tax purposes the offer and the merger
   will constitute a reorganization. See "Material Federal Income Tax
   Consequences."

   These and other conditions to the offer are discussed in this prospectus
   under "The Offer -- Conditions of the Offer" beginning on page 49.

Q: HOW DO I PARTICIPATE IN THE OFFER?

A: To tender your shares, you should do the following:

     - If you hold your shares in your own name, complete and sign the enclosed
       letter of transmittal and return it with your share certificates to
       American Stock Transfer & Trust Company, the exchange agent for the
       offer, at its address on the back cover of this prospectus.

     - If you hold your shares in "street name" through a broker, ask your
       broker to tender your shares.

   For more information on the procedures for tendering your shares, please
   refer to "The Offer -- Procedure for Tendering" beginning on page 46.

Q: WILL I BE TAXED ON THE VERTICALNET SHARES I RECEIVE?

A: We and SierraCities have been advised by our respective counsel that it is
   their opinion that, although the matter is not free from doubt, for U.S.
   federal income tax purposes the offer and the merger will constitute a
   reorganization if, among other things, (a) the merger is completed promptly
   after the offer, (b) the offer and the merger are completed under the current
   terms of the merger agreement and (c) the minimum tender condition for the
   offer is satisfied. If the offer and the merger so qualify, no gain or loss
   will be recognized for U.S. federal income tax purposes, and no U.S. federal
   income tax will be payable, by a SierraCities stockholder upon receipt of our
   stock in the offer or the merger (except for gain or loss recognized, and
   U.S. federal income tax payable, with respect to the receipt of cash instead
   of any fraction of a VerticalNet share). You are urged to carefully read the
   section entitled "Material Federal Income Tax Consequences" beginning on page
   65 for a more detailed discussion of the anticipated U.S. federal income tax
   consequences and to consult your tax advisor regarding the tax consequences
   to you of your participation in the offer and the merger.

Q: HAS THE OFFER COMMENCED EVEN THOUGH THIS PROSPECTUS IS SUBJECT TO CHANGE AND
   THE RELATED REGISTRATION STATEMENT HAS NOT YET BEEN DECLARED EFFECTIVE BY THE
   SEC?

A: Yes. The offer has commenced. The effectiveness of the registration statement
   is not necessary for you to tender your SierraCities shares. The SEC recently
   changed its rules to permit exchange offers to begin before the related
   registration statement has become effective, and we are taking advantage of
   this with the goal of combining VerticalNet and SierraCities faster than
   similar combinations could previously be accomplished. We cannot, however,
   accept for exchange any shares tendered in the offer until the registration
   statement is declared effective by the SEC.

Q: IS VERTICALNET'S FINANCIAL CONDITION RELEVANT TO MY DECISION TO TENDER MY
   SHARES IN THE OFFER?

A: Yes. Shares of SierraCities accepted in the offer will be exchanged for
   shares of our common stock, so you should consider our financial condition
   before you decide to become one of our shareholders through the offer. In
   considering our financial condition, you should review this prospectus and
   the documents incorporated by reference in this prospectus because they
   contain detailed business, financial and other information about us.

                                        v
<PAGE>   8

Q: WHERE CAN I FIND MORE INFORMATION ABOUT VERTICALNET AND SIERRACITIES?

A: You can find more information about VerticalNet and SierraCities as described
   under "Where You Can Find More Information" on page vii.

Q: WHAT SHOULD I DO IF I HAVE QUESTIONS?

A: If you have any questions about the offer and the merger, please contact our
   information agent, D.F. King & Co., Inc., 77 Water Street, New York, NY
   10005, (212) 425-1685 or call them toll free at (800) 628-8510.

                                       vi
<PAGE>   9

                      WHERE YOU CAN FIND MORE INFORMATION

     VerticalNet and SierraCities file annual, quarterly and current reports,
proxy statements and other information with the Securities and Exchange
Commission. You may read and copy this information at the following locations of
the SEC:

<TABLE>
<S>                         <C>                           <C>
Public Reference Room       North East Regional Office    Midwest Regional Office
450 Fifth Street, N.W.      7 World Trade Center          500 West Madison Street
Room 1024                   Room 1300                     Suite 1400
Washington, D.C. 20549      New York, New York 10048      Chicago, Illinois
                                                          60661-2511
</TABLE>

     You may also obtain copies of this information by mail from the Public
Reference Room of the SEC, 450 Fifth Street, N.W., Room 1024, Washington, D.C.
20549, at prescribed rates. Please call the SEC at 1-800-SEC-0330 for further
information on the public reference rooms.

     The SEC also maintains an Internet Worldwide Web site that contains
reports, proxy statements and other information about issuers like VerticalNet
and SierraCities who file electronically with the SEC. The address of that site
is http://www.sec.gov.

     We filed a registration statement on Form S-4 to register with the SEC the
offer and exchange of the shares of our common stock to be issued pursuant to
the offer and the merger. This prospectus is a part of that registration
statement. As allowed by SEC rules, this prospectus does not contain all the
information you can find in the registration statement or the exhibits to the
registration statement. We also filed with the SEC a statement on Schedule TO
pursuant to Rule 14d-3 under the Securities Exchange Act of 1934 that furnishes
information about the offer. You may read and copy the Form S-4, the Schedule TO
and any amendments to them at the SEC's public reference rooms referred to
above.

     The SEC allows us to "incorporate by reference" information into this
prospectus, which means that we can disclose important information to you by
referring you to another document filed separately with the SEC. The information
incorporated by reference is deemed to be part of this prospectus, except for
any information superseded by information contained directly in this prospectus.
This prospectus incorporates by reference the documents set forth below that we
or SierraCities have previously filed with the SEC. These documents contain
important information about VerticalNet, SierraCities and their respective
financial condition.

     DOCUMENTS INCORPORATED BY REFERENCE ARE AVAILABLE WITHOUT CHARGE UPON
REQUEST TO OUR INFORMATION AGENT, D.F. KING & CO., INC., 77 WATER STREET, NEW
YORK, NY 10005, (212) 425-1685 OR CALL TOLL FREE AT (800) 628-8510. IN ORDER TO
ENSURE TIMELY DELIVERY, ANY REQUEST FOR DOCUMENTS SHOULD BE SUBMITTED NO LATER
THAN DECEMBER 7, 2000. IF YOU REQUEST ANY INCORPORATED DOCUMENTS FROM US, WE
WILL MAIL THEM TO YOU BY FIRST CLASS MAIL, OR ANOTHER EQUALLY PROMPT MEANS,
WITHIN ONE BUSINESS DAY AFTER WE RECEIVE YOUR REQUEST.

     The following documents that we previously filed with the SEC are
incorporated by reference:

     - Annual Report on Form 10-K for the fiscal year ended December 31, 1999;

     - Quarterly Reports on Form 10-Q for the periods ended March 31, 2000, June
       30, 2000 and September 30, 2000;

     - Current Reports on Form 8-K or 8-K/A dated February 11, 2000, February
       22, 2000, March 23, 2000, March 31, 2000, April 4, 2000, July 6, 2000 and
       July 13, 2000; and

     - The description of our common stock contained in the registration
       statement on Form 8-A filed on January 19, 1999.

                                       vii
<PAGE>   10

     The following documents that SierraCities previously filed with the SEC are
incorporated by reference:

     - Annual Report on Form 10-K for the fiscal year ended December 31, 1999;

     - Quarterly Reports on Form 10-Q for the periods ended March 31, 2000, June
       30, 2000 and September 30, 2000;

     - Current Report on Form 8-K dated February 1, 2000; and

     - The description of SierraCities' common stock contained in the
       registration statement on Form 8-A filed on May 6, 1997.

     All documents that we or SierraCities file pursuant to Section 13(a),
13(c), 14 or 15(d) of the Securities Exchange Act of 1934 from the date of this
prospectus to the date that the offer is terminated, and, if later, until the
earlier of the date on which a meeting of the SierraCities stockholders to
approve the merger is held and the date on which the merger is consummated,
shall also be deemed to be incorporated in this prospectus by reference.

     We have not authorized anyone to give any information or make any
representation about our offer that is different from, or in addition to, that
contained in this prospectus or in any of the materials that we have
incorporated by reference into this prospectus. Therefore, if anyone does give
you information of this sort, you should not rely on it. If you are in a
jurisdiction in which offers to exchange or sell, or solicitations of offers to
exchange or purchase, the securities offered by this document are unlawful, or
if you are a person to whom it is unlawful to direct these types of activities,
then the offer presented in this document does not extend to you. The
information contained in this document speaks only as of the date of this
document unless the information specifically indicates that another date
applies.

                FORWARD-LOOKING STATEMENTS MAY PROVE INACCURATE

     We have made forward-looking statements in this prospectus about
VerticalNet, SierraCities and the combined company that are subject to risks and
uncertainties. Any statements contained in this prospectus that are not
statements of historical or current fact may be deemed forward-looking
statements. Forward-looking statements may be identified by such words as "may,"
"might," "will," "would," "shall," "should," "pro forma," "potential,"
"pending," "plans," "anticipates," "believes," "estimates," "expects," "intends"
or similar expressions, including the negative of any of the foregoing. For
those statements, we claim the protection of the safe harbor for forward-looking
statements to the extent permitted by the Private Securities Litigation Reform
Act of 1995.

     In making these forward-looking statements, we believe that our
expectations are based on reasonable assumptions. These statements are not meant
to predict future events or circumstances and might not be realized if actual
results and events differ materially from our expectations. Several factors,
some of which are beyond VerticalNet's and SierraCities' control, which are
discussed elsewhere in this prospectus and in the documents that we have
incorporated by reference, could affect the future results of VerticalNet and
SierraCities and of the combined company after completion of the offer and the
merger. These factors could also cause the results or other outcomes to differ
materially from those expressed in our forward-looking statements.

     Given these uncertainties, you are cautioned not to place undue reliance on
our forward-looking statements. We disclaim any obligation to announce publicly
the results of any revisions to any of the forward-looking statements contained
in this prospectus to reflect future events or developments.

                                      viii
<PAGE>   11

                                    SUMMARY

     This summary highlights selected information from this prospectus and may
not contain all the information that is important to you. To better understand
the offer and the merger, you should read this entire document carefully, as
well as those additional documents to which we refer you. See "Where You Can
Find More Information" on page vii.

                            THE PROPOSED COMBINATION

     We are proposing a business combination of VerticalNet and SierraCities
under which VerticalNet will acquire all the outstanding shares of SierraCities
common stock. We are offering to exchange a fraction of a share of VerticalNet
common stock for each share of SierraCities common stock validly tendered and
not properly withdrawn on or prior to the expiration date of the offer. The
expiration date is currently December 14, 2000 but we may extend the offer under
limited circumstances as described in "The Offer -- Extension, Termination and
Amendment" on page 43.

     We intend, promptly after completion of the offer, to merge Truckee
Acquisition Co., our wholly owned subsidiary and the purchaser in the offer,
with and into SierraCities. Each share of SierraCities common stock which has
not been exchanged or accepted for exchange in the offer would be converted in
the merger into the same number of VerticalNet shares at the same exchange ratio
used in the offer.

                                 THE COMPANIES

                               VERTICALNET, INC.
                                700 Dresher Road
                          Horsham, Pennsylvania 19044
                                 (215) 328-6100

     VerticalNet, through its wholly owned subsidiaries, provides end-to-end
e-commerce solutions targeted at distinct business segments through three
strategic business units:

     - VerticalNet Markets includes 57 industry-specific digital marketplaces
       designed as online vertical trading communities and provides hosted
       e-commerce and community capabilities for corporate divisions and small
       and medium sized businesses;

     - VerticalNet Exchanges focuses on trading electronic components and
       hardware in open and spot markets; and

     - VerticalNet Solutions builds digital marketplaces for our industry
       alliances, independent Net market makers and global 2000 enterprises.

                             SIERRACITIES.COM INC.
                         600 Travis Street, Suite 7050
                              Houston, Texas 77002
                                 (800) 745-9292

     SierraCities, formerly First Sierra Financial, Inc., is a provider of
e-finance solutions for small businesses. SierraCities offers online end-to-end
business financing fulfillment solutions for specific equipment purchases and
for general corporate purposes. SierraCities acquires, originates, sells and
services equipment leases relating to a wide range of equipment, including
computers and peripherals, software, telecommunications and diagnostic
equipment, as well as other specialized equipment for the healthcare,
automotive, food and hospitality industries. Depending on market conditions,
SierraCities securitizes the

                                        1
<PAGE>   12

leases in a portfolio that meets pre-established eligibility criteria by
packaging them into a pool and selling securities backed by the leases through
public offerings and private placement transactions.

     In addition, SierraCities has in the past generated, and may in the future
generate, income through the acquisition of lease portfolios and the subsequent
sale of such portfolios at a premium.

                      REASONS FOR THE PROPOSED COMBINATION

     We believe that the proposed combination of VerticalNet and SierraCities
would achieve the following benefits:

- Financing of business-to-business transactions.  The proposed combination will
  allow us to establish a first mover advantage as an online
  business-to-business e-commerce enabler with a tightly integrated end-to-end
  credit and financing solution. By integrating SierraCities' online credit
  evaluation and financing functions with our existing horizontal product
  offerings, we will enhance functionality across each of our three strategic
  business units: VerticalNet Markets, VerticalNet Solutions and VerticalNet
  Exchanges.

- Enabling business-to-business e-commerce.  We expect SierraCities' credit and
  financing solutions to enhance our ability to enable e-commerce transactions
  by offering both buyers and suppliers solutions that remove key roadblocks to
  conducting business online. Buyers can apply for credit online, receive final
  approval in minutes and receive funding in as little as 24 hours, while
  suppliers can assess the credit risk of potential buyers with credit scoring
  tools.

- Distribution channel for storefronts and e-commerce centers.  VerticalNet
  Markets will gain the ability to cross-sell its storefront and e-commerce
  center products to SierraCities' 95,000 active business customers and its
  database of 300,000 business credit applicants.

- Synergies with VerticalNet Markets.  SierraCities' experience in leveraging
  technology and the Internet to originate and service business credit in the
  sub-$100,000 market, together with VerticalNet Markets' and SierraCities'
  shared focus on small to medium sized businesses, will give the combined
  company the opportunity to market business credit services and financing
  solutions throughout VerticalNet Markets' 57 online marketplaces, as well as
  to its more than 10,000 storefront customers.

- Enhancing VerticalNet Solutions' product offerings.  By integrating
  SierraCities' online credit scoring and financing technology into VerticalNet
  Solutions' products, we will be able to enhance our e-commerce software
  solution for global 2000 companies, industry alliances and independent Net
  market makers.

- Qualifying Participants in VerticalNet Exchanges.  VerticalNet Exchanges
  expects to use SierraCities' credit decisioning tools to qualify market
  participants in our NECX.com electronics exchange as well as in any future
  exchanges.

This is not a complete list of all of the factors that our board considered.
Each member of our board may have considered different factors and our board did
not quantify or assign relative weights to the factors it considered.

     The reasons for the recommendation by the SierraCities board of directors
are set forth in SierraCities' Solicitation/Recommendation Statement on Schedule
14D-9, which is being mailed to SierraCities stockholders together with this
prospectus.

                  SUPPORT OF SIERRACITIES' BOARD OF DIRECTORS

     The SierraCities board of directors has determined that the offer is fair
to, and in the best interests of, SierraCities stockholders and unanimously
recommends that SierraCities stockholders accept the offer and tender their
shares pursuant to the offer. Information about the recommendation of
SierraCities' board of directors is more fully set forth in SierraCities'
Solicitation/Recommendation Statement on Schedule 14D-9.

                                        2
<PAGE>   13

                                   THE OFFER

SUMMARY OF THE OFFER

     We have attached the merger agreement governing the offer and the merger as
Annex A to this prospectus. We encourage you to read this agreement because it
is the legal document that governs the offer and the merger.

     WHAT SIERRACITIES STOCKHOLDERS WILL RECEIVE

     We are offering, upon the terms and conditions set forth in this prospectus
and the related letter of transmittal, a fraction of a VerticalNet common share
for each SierraCities common share that is validly tendered on or prior to the
expiration date of the offer and not properly withdrawn. The fraction will be
equal to the exchange ratio described on the cover page of this prospectus.

     Each share of SierraCities common stock which has not been exchanged or
accepted for exchange in the offer will be converted in the merger into
VerticalNet common shares at the same exchange ratio used in the offer.

     VerticalNet will not issue any fractional common shares in connection with
the offer and the merger. SierraCities stockholders will instead receive cash
for any VerticalNet fractional common shares otherwise issuable to them.

     The VerticalNet common shares to be issued to SierraCities stockholders in
the merger will be included for quotation on the Nasdaq National Market.

  TIMING OF THE OFFER

     Our offer is currently scheduled to expire on December 14, 2000, but may,
in some cases, be extended as described below. See "The Offer -- Extension,
Termination and Amendment" on page 43.

  EXTENSION, TERMINATION AND AMENDMENT

     If the conditions to the offer are not satisfied or waived on any scheduled
expiration date of the offer and the conditions could reasonably be expected to
be satisfied, we are obligated to extend the offer for the amount of time as is
reasonably necessary to cause the conditions to be satisfied. However, no single
extension shall exceed ten business days without the prior written consent of
SierraCities. We also have the right, subject to the provisions of the merger
agreement, (a) to extend the offer for any period required by any rule or
regulation of the SEC applicable to the offer and (b) if more than 80% but less
than 90% of the outstanding shares shall have been validly tendered pursuant to
the offer as of the scheduled or extended expiration date, to extend the offer
for an aggregate period of not more than five business days beyond the latest
expiration date that would otherwise be permitted under clause (a) of this
sentence. During any such extension, all SierraCities shares previously tendered
and not properly withdrawn will remain tendered, subject to your right to
withdraw your SierraCities shares.

     Without the prior written consent of SierraCities, we may not amend or
waive the condition that at least two thirds of the outstanding shares of
SierraCities be tendered in the offer, make any change which would change the
form of consideration to be paid, decrease the exchange ratio or the number of
shares sought in the offer, impose conditions in addition to those set forth in
the merger agreement or that would in any other way adversely affect the holders
of SierraCities stock.

     Subject to the SEC's rules and regulations and the terms of the merger
agreement, we also reserve the right:

     - to delay acceptance for exchange of or, regardless of whether we
       previously accepted SierraCities shares for exchange, exchange any
       SierraCities shares pursuant to the offer upon the failure of any of the
       conditions of the offer to be satisfied; and

                                        3
<PAGE>   14

     - to terminate the offer and not accept or exchange any SierraCities shares
       not previously accepted or exchanged upon the failure of any of the
       conditions of the offer to be satisfied.

     We will follow any extension, delay, termination or amendment, as promptly
as practicable, with a public announcement.

     Exchange of Shares.  You will receive a fraction of a share of our common
stock for each share of SierraCities common stock you tender in the offer as
described on the cover page of this prospectus. Because the VerticalNet average
trading price is not yet known, we do not know at this time what fraction of a
share of our common stock you will receive for each share of SierraCities common
stock you tender. We will determine the VerticalNet average trading price prior
to the expiration of the offer period. We will not deliver shares of our common
stock to SierraCities stockholders who tender their shares in the offer until
after the expiration of the offer period. Once the VerticalNet average trading
price is set, the value of our common stock that you receive will fluctuate with
our market price. Therefore, the market value of our common stock that you
receive could go up or down between the date the fraction of a share of our
common stock you are to receive is determined and the date your shares are
actually delivered to you.

     Conditions of the Offer.  Our obligation to consummate the offer is subject
to various conditions described below under "The Offer -- Conditions of the
Offer."

     Withdrawal Rights.  Your tender of SierraCities shares pursuant to the
offer is irrevocable, except that SierraCities shares tendered pursuant to the
offer may be withdrawn at any time prior to the expiration date of the offer.

     Appraisal Rights.  The offer does not entitle you to appraisal rights with
respect to your SierraCities shares. If, at the end of the offer, we have
received between two thirds and 90% of the outstanding SierraCities shares, we
will effect a long form merger as permitted under Delaware law, which would
require notice to, and approval by, SierraCities stockholders. SierraCities
stockholders who did not tender their SierraCities shares during the offer would
not have appraisal rights in connection with a long form merger.

     If, at the end of the offer, however, we have received 90% or more of the
outstanding SierraCities shares, we will effect a short form merger as permitted
under Delaware law. In the event of a short form merger, stockholders who did
not tender their SierraCities shares will have the right under Delaware law to
dissent and demand appraisal rights with respect to their SierraCities shares,
but only if they comply with certain statutory requirements. In the event of a
short form merger, information regarding these requirements will be provided to
SierraCities stockholders who have not tendered their SierraCities shares.

     Procedure for Tendering Shares.  For you to validly tender SierraCities
shares pursuant to our offer, either:

     - a properly completed and duly executed letter of transmittal, or manually
       executed facsimile of that document, along with any required signature
       guarantees, or an agent's message in connection with a book-entry
       transfer, and any other required documents, must be transmitted to and
       received by the exchange agent at its address set forth on the back cover
       of this prospectus. In addition, certificates for tendered SierraCities
       shares must be received by the exchange agent at that address, or those
       SierraCities shares must be tendered pursuant to the procedures for
       book-entry tender, in each case before the expiration date; or

     - you must comply with the guaranteed delivery procedures set forth in "The
       Offer -- Guaranteed Delivery."

     See the procedures for tendering shares under "The Offer -- Procedure for
Tendering" for more details.

     Merger.  We are making this offer in order to acquire control of, and
ultimately the entire common equity interest in, SierraCities. We intend, as
soon as possible after consummation of the offer, to seek to have SierraCities
and Truckee consummate the merger. The merger requires the affirmative vote of
at least two thirds of the shares of SierraCities common stock outstanding on
the record date for the meeting
                                        4
<PAGE>   15

to approve the merger, unless we have acquired 90% or more of the outstanding
shares in the offer, in which case the merger can be accomplished without a
vote. If the two-thirds minimum tender condition is satisfied and we purchase
the tendered SierraCities shares, approval of the merger by SierraCities
stockholders will be assured, subject to the other conditions to the merger. At
the effective time of the merger, each share of SierraCities common stock,
except for shares held by SierraCities, us, Truckee or, if applicable,
stockholders exercising appraisal rights will be converted into the right to
receive the fraction of a share of our common stock for each share of
SierraCities common stock as was paid in the offer, subject to any appraisal
rights that may be available under Delaware law.

     Regulatory Approvals.  We and SierraCities have agreed pursuant to the
merger agreement to use all reasonable efforts to take whatever actions are
required to obtain necessary regulatory approvals with respect to the offer and
the merger. Other than clearance under the antitrust laws applicable to the
offer and the merger that are described below under "The Offer -- Conditions of
the Offer," the SEC declaring the effectiveness of the registration statement of
which this prospectus is a part and the filing of a certificate of merger under
Delaware law with respect to the merger, we do not believe that any additional
material governmental filings are required with respect to the offer and the
merger.

     Material Federal Income Tax Consequences.  We and SierraCities have been
advised by our respective counsel that it is their opinion that, although the
matter is not free from doubt, for U.S. federal income tax purposes the offer
and the merger will qualify as a reorganization if, among other things, (a) the
merger is completed promptly after the offer, (b) the offer and the merger are
completed under the current terms of the merger agreement and (c) the minimum
tender condition for the offer is satisfied. If the offer and the merger so
qualify, no gain or loss will be recognized for U.S. federal income tax
purposes, and no U.S. federal income tax will be payable, by a SierraCities
stockholder upon receipt of our stock in the offer or the merger, except for
gain or loss recognized, and U.S. federal income tax payable, with respect to
the receipt of cash instead of any fraction of a VerticalNet share.

     The above-described tax treatment of the offer and the merger to
SierraCities stockholders depends on, among other things, some facts that will
not be known before the completion of the merger. SierraCities stockholders are
urged to carefully read the discussion under "Material Federal Income Tax
Consequences" beginning on page 65, and to consult their tax advisors on the
consequences of their participation in the offer or the merger.

     Accounting Treatment.  We will account for the merger as a purchase for
financial reporting purposes.

     Termination of Merger Agreement.  We and SierraCities each have the right
to terminate the merger agreement under circumstances by mutual agreement if the
agreement is not timely consummated without fault of the terminating party or
under the other conditions described in more detail in "The Offer -- Termination
Events; Termination Fee," which begins on page 60.

     Termination Fee.  If the merger agreement is terminated under circumstances
described in the merger agreement that generally indicate that SierraCities has
entered into an alternative merger transaction or that SierraCities is pursuing
and enters into an alternative merger transaction within 12 months after the
date of the termination, SierraCities is obligated to pay us a cash fee in the
amount of $5.3 million.

     Opinion of SierraCities Financial Advisor.  In deciding to approve the
merger, SierraCities' board of directors considered the opinion of its financial
advisor, Donaldson, Lufkin & Jenrette Securities Corporation, to the effect
that, as of November 6, 2000, the date of the opinion, the consideration to be
received by SierraCities stockholders was fair to the SierraCities stockholders
from a financial point of view. A copy of DLJ's fairness opinion is attached as
an exhibit to SierraCities' Schedule 14D-9, which is being mailed to
SierraCities' stockholders together with this prospectus.

                                        5
<PAGE>   16

                SELECTED HISTORICAL AND PRO FORMA FINANCIAL DATA

               SELECTED HISTORICAL FINANCIAL DATA OF VERTICALNET

     The following selected historical financial data should be read in
conjunction with VerticalNet's financial statements incorporated by reference in
this prospectus. The statement of operations data for the period from July 28,
1995 through December 31, 1995 and for the years ended December 31, 1996, 1997,
1998 and 1999 and the balance sheet data as of December 31, 1996, 1997, 1998 and
1999 have been derived from VerticalNet's audited financial statements not
included in this prospectus. The statement of operations data for the nine
months ended September 30, 1999 and 2000 and the balance sheet data as of
September 30, 2000 are derived from VerticalNet's unaudited financial statements
not included in this prospectus. In the opinion of VerticalNet's management,
such unaudited financial statements include all adjustments, consisting of only
normal recurring adjustments, necessary for a fair presentation of the
information when read in conjunction with the audited financial statements and
notes thereto.

<TABLE>
<CAPTION>
                                      JULY 28,
                                        1995                                                   NINE MONTHS ENDED
                                   (INCEPTION) TO           YEAR ENDED DECEMBER 31,              SEPTEMBER 30,
                                    DECEMBER 31,    ---------------------------------------   --------------------
                                        1995         1996      1997       1998       1999       1999       2000
                                   --------------   -------   -------   --------   --------   --------   ---------
                                                        (IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                                <C>              <C>       <C>       <C>        <C>        <C>        <C>
Statement of Operations Data:
  Exchange transaction sales.....      $   --       $    --   $    --   $     --   $ 16,501   $     --   $ 496,770
  Cost of exchange transaction
    sales........................          --            --        --         --     14,171         --     413,791
                                       ------       -------   -------   --------   --------   --------   ---------
    Net exchange revenues........          --            --        --         --      2,330         --      82,979
  E-enablement, e-commerce,
    advertising and services
    revenues.....................          16           285       792      3,135     18,428     10,667      71,763
                                       ------       -------   -------   --------   --------   --------   ---------
    Combined revenues............          16           285       792      3,135     20,758     10,667     154,742
                                       ------       -------   -------   --------   --------   --------   ---------
Expenses:
  Editorial and operational......          24           214     1,056      3,238      8,611      5,438      28,801
  Product development............          22           214       711      1,405      7,396      4,920      22,100
  Sales and marketing............         147           268     2,301      7,895     26,269     17,101      93,770
  General and administrative.....          33           291     1,388      3,823     11,887      6,434      61,556
  Amortization expense...........          --            --        --        283      7,819      2,702     125,567
  In-process research and
    development charge...........          --            --        --         --     13,600     13,600      10,000
                                       ------       -------   -------   --------   --------   --------   ---------
Operating loss...................        (210)         (702)   (4,664)   (13,509)   (54,824)   (39,528)   (187,052)
Interest, net and other income
  (expense)......................          (1)           (7)     (115)       (85)     1,344      1,332      68,954
                                       ------       -------   -------   --------   --------   --------   ---------
Net loss.........................        (211)         (709)   (4,779)   (13,594)   (53,480)   (38,196)   (118,098)
Preferred stock dividends........          --            --        --         --         --         --      (2,972)
                                       ------       -------   -------   --------   --------   --------   ---------
Loss attributable to common
  shareholders...................      $ (211)      $  (709)  $(4,779)  $(13,594)  $(53,480)  $(38,196)  $(121,070)
                                       ======       =======   =======   ========   ========   ========   =========
Basic and diluted net loss per
  common share...................      $(0.05)      $ (0.07)  $ (0.47)  $  (1.32)  $  (0.86)  $  (0.65)  $   (1.49)
Shares outstanding used in basic
  and diluted calculation........       4,387        10,335    10,107     10,282     62,391     59,192      81,508
Pro forma basic and diluted net
  loss per common share(1).......      $(0.05)      $ (0.05)  $ (0.19)  $  (0.32)  $  (0.80)  $  (0.59)  $   (1.49)
Shares outstanding used in pro
  forma basic and diluted net
  loss per common share
  calculation....................       4,387        13,305    24,737     42,542     66,659     64,898      81,508
</TABLE>

---------------
(1) Pro forma net loss per share is computed using the weighted average number
    of shares of common stock outstanding, including common equivalent shares
    from convertible preferred stock issued prior to our initial public offering
    as if converted at the original issuance date. All of such convertible
    preferred stock was converted into our common stock on the date of our
    initial public offering. The following balance sheet data is presented on an
    actual basis.
                                        6
<PAGE>   17

<TABLE>
<CAPTION>
                                                                                       AS OF
                                                   AS OF DECEMBER 31,              SEPTEMBER 30,
                                         --------------------------------------    -------------
                                         1996     1997       1998        1999          2000
                                         ----    -------    -------    --------    -------------
                                                             (IN THOUSANDS)
<S>                                      <C>     <C>        <C>        <C>         <C>
Balance Sheet Data:
  Cash and cash equivalents............  $329    $   755    $ 5,663    $ 14,254     $   87,580
  Working capital (deficit)............   150     (2,536)       938      69,878        132,206
  Short-term investments...............    --         --         --      44,131         36,928
  Long-term investments................    --         --         --      16,885         81,264
  Cost method investments..............    --         --         --       6,700         16,838
  Total assets.........................   637      2,104     12,343     340,904      1,083,687
  Short-term borrowings................    --      2,651      2,288       1,372          4,908
  Deferred revenues....................   216        710      2,177       9,768         57,181
  Convertible subordinated debentures
     and long-term debt, less current
     portion...........................   167        400      5,352     116,750         23,027
  Total shareholders' equity
     (deficit).........................   105     (2,424)      (276)    178,397        900,236
</TABLE>

                                        7
<PAGE>   18

               SELECTED HISTORICAL FINANCIAL DATA OF SIERRACITIES

     The following selected historical financial data should be read in
conjunction with SierraCities' financial statements incorporated by reference in
this prospectus. The statement of operations data for the years ended December
31, 1995, 1996, 1997, 1998 and 1999 and the balance sheet data as of December
31, 1995, 1996, 1997, 1998 and 1999 have been derived from SierraCities' audited
financial statements not included in this prospectus. The statement of
operations data for the nine months ended September 30, 1999 and 2000 and the
balance sheet data as of September 30, 2000 are derived from SierraCities'
unaudited financial statements not included in this prospectus. In the opinion
of SierraCities' management, such unaudited financial statements include all
adjustments, consisting of only normal recurring adjustments, necessary for a
fair presentation of the information when read in conjunction with the audited
financial statements and notes thereto.

<TABLE>
<CAPTION>
                                                                                                NINE MONTHS
                                                                                                   ENDED
                                                      YEAR ENDED DECEMBER 31,                  SEPTEMBER 30,
                                          ------------------------------------------------   ------------------
                                            1995      1996      1997      1998      1999       1999      2000
                                          --------   -------   -------   -------   -------   --------   -------
                                                          (IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                                       <C>        <C>       <C>       <C>       <C>       <C>        <C>
Statement of Operations Data:
  Gain on sale of lease financing
    receivables through securitized
    transactions........................  $  3,259   $ 3,456   $18,164   $16,291   $   811   $     --   $ 3,270
  Gains from direct sales of lease
    financing receivables...............     4,926     9,755    17,095    18,434    16,473     10,538     5,276
  Interest income.......................     3,069     6,387     9,193    17,315    72,343     50,467    75,896
  Servicing income......................       323     1,053     3,095     5,112     7,455      5,398     6,138
  Other income..........................       958     2,720     4,052     3,991     5,268      3,929     3,512
                                          --------   -------   -------   -------   -------   --------   -------
         Total revenue..................    12,535    23,371    51,599    61,143   102,350     70,332    94,092
                                          --------   -------   -------   -------   -------   --------   -------
  Salaries and benefits.................     2,235     6,799    15,554    29,509    23,313     17,344    16,626
  Interest expense......................     2,632     5,049     5,180     6,027    37,554     25,219    44,523
  Provision for credit losses on lease
    financing receivables and investment
    in trust certificates...............       392       605     2,101    10,364    11,756      7,112    15,403
  Depreciation and amortization.........       179       469     1,525     3,752     5,505      3,988     4,730
  Other general and administrative......     4,998     6,254    11,595    14,173    19,211     14,220    17,092
  Bank application expenses.............        --        --        --        --        --         --       864
  Branch restructuring charge...........        --        --        --        --        --         --     6,013
  Research and development costs of
    acquired companies..................        --        --        --     2,550        --         --        --
  Merger and acquisition expenses.......        --        --        --     1,742        --         --        --
  Relocation of operations center.......        --        --        --     1,593        --         --        --
                                          --------   -------   -------   -------   -------   --------   -------
         Total expenses.................    10,436    19,176    35,955    69,710    97,339     67,883   105,251
                                          --------   -------   -------   -------   -------   --------   -------
  Income (loss) before provision
    (benefit) for income taxes..........     2,099     4,195    15,644    (8,567)    5,011      2,449   (11,159)
  Provision (benefit) for income
    taxes...............................       720       932     5,107    (2,665)    2,723      1,455    (3,695)
                                          --------   -------   -------   -------   -------   --------   -------
  Net income (loss).....................  $  1,379   $ 3,263   $10,537   $(5,902)  $ 2,288   $    994   $(7,464)
                                          ========   =======   =======   =======   =======   ========   =======
  Earnings (loss) per common share,
    diluted.............................  $   0.17   $  0.41   $  1.03   $ (0.43)  $  0.13   $   0.06   $ (0.39)
                                          ========   =======   =======   =======   =======   ========   =======
  Weighted average shares outstanding,
    diluted.............................     8,074     7,923    10,185    13,725    17,338     16,541    19,044
                                          ========   =======   =======   =======   =======   ========   =======
</TABLE>

                                        8
<PAGE>   19

<TABLE>
<CAPTION>
                                                                                               AS OF
                                                     AS OF DECEMBER 31,                    SEPTEMBER 30,
                                     ---------------------------------------------------   -------------
                                      1995      1996      1997       1998        1999          2000
                                     -------   -------   -------   --------   ----------   -------------
                                                               (IN THOUSANDS)
<S>                                  <C>       <C>       <C>       <C>        <C>          <C>
Balance Sheet Data:
Assets:
  Lease financing receivables,
     net...........................  $67,945   $62,769   $27,675   $337,162   $  871,948    $  938,360
  Cash and cash equivalents........    1,265     3,793    14,569      7,928       57,083        56,028
  Other receivables................       --        --     4,087     11,596        7,613         7,434
  Investment in trust
     certificates..................       --     9,534    12,512      7,288        9,808        12,458
  Marketable securities............       --        --     4,223      5,042        3,460         2,092
  Goodwill and other intangible
     assets, net...................      732     2,003    20,162     39,202       43,500        41,644
  Property and equipment, net......       --     3,615     5,801      9,909       11,723         9,784
  Other assets.....................    1,367     2,040     3,929      6,923        8,627        11,339
  Current tax receivables..........       --        --        --      3,243          590           146
  Deferred income tax asset........       --        --        --         --           --         3,735
                                     -------   -------   -------   --------   ----------    ----------
          Total assets.............  $71,309   $83,754   $92,958   $428,293   $1,014,352    $1,083,020
                                     =======   =======   =======   ========   ==========    ==========
Liabilities and Stockholders'
  Equity:
  Nonrecourse debt.................  $    --   $    --   $    --   $276,511   $  766,095    $  857,245
  Other debt.......................   56,166    53,153    14,937     23,026       27,425        20,735
  Subordinated notes payable.......    9,000     9,000     6,000      3,250        1,000         1,000
  Other liabilities................    4,300    13,374    28,794     40,989       51,878        44,872
                                     -------   -------   -------   --------   ----------    ----------
          Total liabilities........   69,466    75,527    49,731    343,776      846,398       923,852
                                     -------   -------   -------   --------   ----------    ----------
  Redeemable preferred stock.......       --     3,890     2,640        469           70            --
  Stockholders' equity.............    1,843     4,337    40,587     84,048      167,884       159,168
                                     -------   -------   -------   --------   ----------    ----------
          Total liabilities and
            stockholders' equity...  $71,309   $83,754   $92,958   $428,293   $1,014,352    $1,083,020
                                     =======   =======   =======   ========   ==========    ==========
</TABLE>

                                        9
<PAGE>   20

         SELECTED UNAUDITED PRO FORMA COMBINED CONDENSED FINANCIAL DATA

     The following selected unaudited pro forma combined condensed financial
data should be read in conjunction with VerticalNet's and SierraCities'
unaudited pro forma combined condensed financial statements and related notes.
The selected unaudited pro forma combined condensed financial data gives effect
to the proposed merger of VerticalNet and SierraCities, the pending investment
by Sumitomo Corporation in VerticalNet and the impact of prior material
acquisitions made by VerticalNet in 1999 and 2000.

     The selected unaudited pro forma combined condensed statement of operations
data for the year ended December 31, 1999 and the nine months ended September
30, 2000 give effect to the prior material acquisitions made by VerticalNet in
1999 and 2000 and the proposed merger as if each had occurred on January 1,
1999.

     The selected unaudited pro forma combined condensed balance sheet as of
September 30, 2000 gives effect to the proposed merger and the pending
investment by Sumitomo in VerticalNet as if each had occurred on September 30,
2000.

     The selected unaudited pro forma combined condensed financial data does not
include the effect of any cost savings from operating efficiencies, synergies or
restructurings that may result from the merger.

     The pro forma information is presented for illustrative purposes only and
is not necessarily indicative of the operating results or financial position
that would have occurred if the merger had been consummated at the beginning of
the earliest period presented, nor is it necessarily indicative of future
operating results or financial position. The pro forma adjustments are based
upon information and assumptions available at the time this document was filed.

<TABLE>
<CAPTION>
                                                                               NINE MONTHS
                                                               YEAR ENDED         ENDED
                                                              DECEMBER 31,    SEPTEMBER 30,
                                                                  1999            2000
                                                              ------------    -------------
                                                                     (IN THOUSANDS,
                                                                 EXCEPT PER SHARE DATA)
<S>                                                           <C>             <C>
Pro Forma Combined Condensed Statement of Operations Data:
Combined revenues...........................................   $ 130,475        $ 199,127
Net loss attributable to common shareholders................    (251,288)        (178,787)
Basic and diluted net loss per common share.................   $   (3.33)       $   (2.01)
</TABLE>

<TABLE>
<CAPTION>
                                                              SEPTEMBER 30, 2000
                                                              ------------------
                                                                (IN THOUSANDS)
<S>                                                           <C>
Pro Forma Combined Condensed Balance Sheet Data:
Cash and cash equivalents...................................      $  181,922
Working capital.............................................         212,280
Total assets................................................       1,314,886
Convertible subordinated debentures and long-term debt, less
  current portion...........................................          32,753
Total shareholders' equity..................................       1,063,579
</TABLE>

                                       10
<PAGE>   21

                           COMPARATIVE PER SHARE DATA

     The following table reflects (a) the historical net loss and book value per
share of VerticalNet common stock and the historical net income(loss) and book
value per share of SierraCities common stock in comparison with the unaudited
pro forma net loss and book value per share after giving effect to VerticalNet's
proposed merger with SierraCities and after giving effect to prior material
acquisitions made by VerticalNet in 1999 and 2000 and the pending investment by
Sumitomo in VerticalNet and (b) the equivalent unaudited pro forma net loss and
book value per share attributable to the shares of VerticalNet stock issuable
assuming an exchange ratio based on $7.00 per share and a VerticalNet market
price per share of $21.0625, which was VerticalNet's closing price on November
10, 2000, or an exchange ratio of .3323.

     The historical book value per share is computed by dividing common
shareholders' equity as of December 31, 1999 and September 30, 2000,
respectively, by the actual common shares outstanding. The pro forma net loss
per share is computed by dividing the pro forma net loss by the pro forma
weighted average number of shares outstanding, assuming VerticalNet had merged
with SierraCities at the beginning of the earliest period presented and after
giving effect to prior material acquisitions made by VerticalNet in 1999 and
2000. The pro forma combined book value per VerticalNet share is computed by
dividing total pro forma common shareholders' equity by the pro forma number of
common shares outstanding at September 30, 2000, assuming the merger had
occurred on that date and after giving effect to the pending investment by
Sumitomo in VerticalNet. The SierraCities equivalent pro forma per share amounts
are calculated by multiplying the VerticalNet pro forma per share amounts by the
common stock exchange ratio of .3323.

     The following information should be read in conjunction with (a) the
separate historical consolidated financial statements and related notes of
VerticalNet and the unaudited interim consolidated financial statements of
VerticalNet incorporated by reference in this prospectus, (b) the separate
historical consolidated financial statements and related notes of SierraCities
and the unaudited interim condensed consolidated financial statements of
SierraCities incorporated by reference in this prospectus and (c) the unaudited
pro forma combined condensed financial statements and related notes of
VerticalNet and the selected historical and selected unaudited pro forma
combined condensed financial data included elsewhere in this prospectus. The pro
forma information is presented for illustrative purposes only and is not
necessarily indicative of the operating results or financial position that would
have occurred if the merger had been consummated as of the beginning of the
earliest period presented, nor is it necessarily indicative of the future
operating results or financial position of the combined companies.

<TABLE>
<CAPTION>
                                                                               NINE MONTHS
                                                               YEAR ENDED         ENDED
                                                              DECEMBER 31,    SEPTEMBER 30,
                                                                  1999            2000
                                                              ------------    -------------
<S>                                                           <C>             <C>
Historical VerticalNet:
  Basic and diluted net loss per share attributable to
     common shareholders....................................     $(0.86)         $(1.49)
  Book value per share at the end of the period.............     $ 2.47          $ 9.23
Historical SierraCities:
  Basic net income (loss) per share.........................     $ 0.14          $(0.39)
  Diluted net income (loss) per share.......................     $ 0.13          $(0.39)
  Book value per share at the end of the period.............     $ 8.82          $ 8.36
VerticalNet and SierraCities Pro Forma Combined:
  Pro forma basic and diluted net loss per VerticalNet
     share..................................................     $(3.33)         $(2.01)
  Pro forma basic and diluted net loss per SierraCities
     share..................................................     $(1.11)         $(0.67)
  Pro forma book value per VerticalNet share at September
     30, 2000...............................................                     $10.23
  Pro forma book value per SierraCities share at September
     30, 2000...............................................                     $ 3.40
</TABLE>

                                       11
<PAGE>   22

                      COMPARATIVE MARKET PRICE INFORMATION

     The following table presents:

     - the closing price of our common stock, as reported on Nasdaq;

     - the closing price of SierraCities common stock, as reported on Nasdaq;
       and

     - the market value based on the closing price on the dates specified below
       of the shares of our common stock to be received in exchange for one
       share of SierraCities common stock in the offer;

in each case as if the merger had been completed on November 6, 2000, the last
full trading day prior to the public announcement of the proposed merger, and on
November 15, 2000, the last day for which such information could be practicably
calculated prior to the date of this prospectus. The numbers have been
calculated assuming that, (a) as of November 6, 2000, the VerticalNet average
trading price would have been $28.60 and the exchange ratio would have been
 .2447 and (b) as of November 15, 2000, the VerticalNet average trading price
would have been $26.04 and the exchange ratio would have been .2688. The
equivalent price per share data for SierraCities common stock represents the
assumed exchange ratio, as of the date set forth in the table, multiplied by the
last sale price per VerticalNet common share on those dates. The actual value of
the VerticalNet common shares a SierraCities stockholder will receive on the
date of the merger may be higher or lower than the prices set forth below.

<TABLE>
<CAPTION>
                                                                                 EQUIVALENT PRICE PER
                                             CLOSING PRICE OF    SIERRACITIES    SHARE OF SIERRACITIES
DATE                                         OUR COMMON STOCK    COMMON STOCK       COMMON STOCK(1)
----                                         ----------------    ------------    ---------------------
<S>                                          <C>                 <C>             <C>
November 6, 2000...........................       $29.50            $4.25                $7.22
November 15, 2000..........................       $20.19            $5.06                $5.43
</TABLE>

     See "Market Prices and Dividends" on page 68 for additional market price
information.
---------------
(1) Computed as the product of the closing price for our common stock on such
    date multiplied by the exchange ratio that would have applied on such date
    as described above.

                                       12
<PAGE>   23

          UNAUDITED PRO FORMA COMBINED CONDENSED FINANCIAL STATEMENTS

     The unaudited pro forma combined condensed financial statements of
VerticalNet and SierraCities presented below are derived from the historical
consolidated financial statements of each of VerticalNet and SierraCities. The
unaudited pro forma combined condensed financial statements are prepared using
the purchase method of accounting.

     VerticalNet has entered into a merger agreement with SierraCities, pursuant
to which VerticalNet is offering to exchange a fraction of a share of its common
stock for each outstanding share of SierraCities common stock. For a summary of
the proposed business combination, see "The Offer" beginning on page 42 of this
prospectus.

     The unaudited pro forma combined condensed balance sheet combines the
unaudited historical condensed balance sheets of VerticalNet and SierraCities as
of September 30, 2000, as well as the pending investment by Sumitomo in
VerticalNet as if it occurred on September 30, 2000. The unaudited pro forma
combined condensed statements of operations give effect to the proposed merger
between VerticalNet and SierraCities and to prior material acquisitions
completed by VerticalNet during the year ended December 31, 1999 and the nine
months ended September 30, 2000 as if they had occurred on January 1, 1999.

     The ultimate determination of the purchase price paid for the acquisition
of SierraCities may change significantly from the current estimate. For purposes
of the unaudited pro forma combined condensed financial statements presented
below, the purchase price has been estimated based upon the market price of
$21.0625 for each VerticalNet common share, that being the last quoted price on
the Nasdaq on November 10, 2000. The final purchase price will be based upon the
average price of VerticalNet's common stock and the number of shares exchanged
as determined by the exchange ratio described in "The Offer" beginning on page
42 of this prospectus.

     The unaudited pro forma results of operations reflect adjustments, which
are based upon preliminary estimates to reflect the allocation of the purchase
consideration to the acquired assets and liabilities of SierraCities. The final
allocation of the purchase consideration will be determined after the completion
of the offer and the merger and will be based on appraisals and a comprehensive
final evaluation of the fair value of SierraCities' tangible assets acquired,
liabilities assumed and identifiable intangible assets and goodwill acquired at
the time of the merger. The final determination of tangible and intangible
assets may result in amortization expense that is different than the preliminary
estimate of these amounts.

     As described in the merger agreement, SierraCities has agreed to use its
reasonable best efforts to cause the securitization of certain of its lease
portfolio assets to be characterized as sales in accordance with generally
accepted accounting principles and to dispose of certain assets prior to or
simultaneously with the closing of the merger. The unaudited pro forma combined
condensed financial statements reflect the consummation by SierraCities of the
agreed upon disposition of its loan and lease portfolios along with certain
other assets.

     Currently, SierraCities funds loans and leases with a combination of debt
and equity and from time to time effects a securitization of the loans and
leases. VerticalNet intends to establish flow arrangements with selected
financial institution partners pursuant to which loans and leases will be
originated by SierraCities and immediately sold for a fee to our flow partners.
We expect to provide loan servicing to our flow partners for a fee. The
unaudited pro forma combined condensed financial statements do not include any
adjustments to the historical amounts resulting from these anticipated changes.
However, the presentation of SierraCities' historical financial statements has
been modified to conform to the presentation that VerticalNet anticipates using
if the flow arrangements are established.

     The unaudited pro forma combined condensed financial statements are
provided for illustrative purposes only and do not purport to represent what the
actual consolidated results of operations or the consolidated financial position
of VerticalNet would have been if the offer and the merger occurred on the

                                       13
<PAGE>   24

dates assumed, nor is it necessarily indicative of future consolidated results
of operations or financial position.

     The unaudited pro forma combined condensed financial statements do not
include the effect of cost savings from anticipated operating efficiencies,
synergies or restructurings that may result from the merger.

     The unaudited pro forma combined condensed financial statements should be
read in conjunction with the separate historical consolidated financial
statements and accompanying notes of VerticalNet and SierraCities that are
incorporated by reference in this prospectus.

                                       14
<PAGE>   25

                               VERTICALNET, INC.

              UNAUDITED PRO FORMA COMBINED CONDENSED BALANCE SHEET
                               SEPTEMBER 30, 2000
                                 (IN THOUSANDS)

<TABLE>
<CAPTION>
                             HISTORICAL      HISTORICAL          PRO FORMA        PRO FORMA       SUMITOMO       ADJUSTED
                             VERTICALNET   SIERRACITIES(1)   ADJUSTMENTS(2)(3)     COMBINED    TRANSACTION(6)     TOTAL
                             -----------   ---------------   -----------------    ----------   --------------   ----------
<S>                          <C>           <C>               <C>                  <C>          <C>              <C>
ASSETS
Current assets:
  Cash and cash
    equivalents............  $   87,580      $   56,028          $   8,314(f)     $  151,922      $30,000       $  181,922
  Short-term investments...      36,928           1,302              2,268(f)         40,498           --           40,498
  Receivables, net of
    allowance for doubtful
    accounts...............      50,133         261,178           (254,859)(f)        56,452           --           56,452
  Inventory................      22,023              --                 --            22,023           --           22,023
  Prepaid expenses and
    other assets...........      43,568          14,044             (7,174)(f)        50,438           --           50,438
                             ----------      ----------          ---------        ----------      -------       ----------
         Total current
           assets..........     240,232         332,552           (251,451)          321,333       30,000          351,333
                             ----------      ----------          ---------        ----------      -------       ----------
Property and equipment,
  net......................      48,998           9,784               (742)(f)        58,040           --           58,040
Receivables, net of
  allowance for doubtful
  accounts.................          --         677,182           (660,468)(f)        16,714           --           16,714
Goodwill and other
  intangibles, net of
  accumulated
  amortization.............     658,968          41,644             30,149(b)        689,117           --          689,117
                                                                   (11,516)(f)
                                                                   (30,128)(d)
Long-term investments......      81,264          13,248             48,458(f)        142,970           --          142,970
Other assets...............      54,225           8,610             (2,388)(f)        56,712                        56,712
                                                                    (3,735)(e)
                             ----------      ----------          ---------        ----------      -------       ----------
         Total assets......  $1,083,687      $1,083,020          $(881,821)       $1,284,886      $30,000       $1,314,886
                             ==========      ==========          =========        ==========      =======       ==========
LIABILITIES AND
SHAREHOLDERS' EQUITY
Current liabilities:
  Accounts payable and
    accrued expenses.......  $   45,937      $   17,457          $   7,620(a)     $   72,534      $    --       $   72,534
                                                                     1,520(f)
  Deferred revenues........      57,181              --                 --            57,181           --           57,181
  Current portion of long-
    term debt..............          --         236,262           (231,832)(f)         4,430           --            4,430
  Other current
    liabilities............       4,908              --                 --             4,908           --            4,908
                             ----------      ----------          ---------        ----------      -------       ----------
         Total current
           liabilities.....     108,026         253,719           (222,692)          139,053           --          139,053
                             ----------      ----------          ---------        ----------      -------       ----------
Long-term debt, net of
  current portion..........       1,322         642,718           (632,992)(f)        11,048           --           11,048
Other long-term
  liabilities..............      52,398          27,415               (312)(f)        79,501           --           79,501
Convertible subordinated
  debentures...............      21,705              --                 --            21,705           --           21,705
                             ----------      ----------          ---------        ----------      -------       ----------
         Total
           liabilities.....     183,451         923,852           (855,996)          251,307           --          251,307
                             ----------      ----------          ---------        ----------      -------       ----------
Shareholders' equity.......     900,236         159,168            133,343(a)      1,033,579       30,000        1,063,579
                                                                  (159,168)(c)
                             ----------      ----------          ---------        ----------      -------       ----------
         Total liabilities
           and
           shareholders'
           equity..........  $1,083,687      $1,083,020          $(881,821)       $1,284,886      $30,000       $1,314,886
                             ==========      ==========          =========        ==========      =======       ==========
</TABLE>

                            See accompanying notes.
                                       15
<PAGE>   26

                               VERTICALNET, INC.

         UNAUDITED PRO FORMA COMBINED CONDENSED STATEMENT OF OPERATIONS
                      FOR THE YEAR ENDED DECEMBER 31, 1999
                     (IN THOUSANDS, EXCEPT PER SHARE DATA)
<TABLE>
<CAPTION>
                                                                              ADJUSTED
                          HISTORICAL       HISTORICAL        PRO FORMA       VERTICALNET     HISTORICAL        PRO FORMA
                          VERTICALNET    ACQUISITIONS(4)   ADJUSTMENTS(4)       TOTAL      SIERRACITIES(1)   ADJUSTMENTS(5)
                          -----------    ---------------   --------------    -----------   ---------------   --------------
<S>                       <C>            <C>               <C>               <C>           <C>               <C>
REVENUES:
Exchange transaction
  sales.................   $ 16,501         $522,626         $      --        $ 539,127        $    --          $    --
Cost of exchange
  transaction
  sales.................     14,171          467,070                --          481,241             --               --
                           --------         --------         ---------        ---------        -------          -------
  Net exchange
    revenues............      2,330           55,556                --           57,886             --               --
E-enablement,
  e-commerce,
  advertising and
  services revenues.....     18,428            1,121                --           19,549         53,040               --
                           --------         --------         ---------        ---------        -------          -------
  Combined revenues.....     20,758           56,677                --           77,435         53,040               --
OTHER COSTS AND
  EXPENSES:
  Editorial and
    operational.........      8,611              288                --            8,899          6,704               --
  Product development...      7,396            3,068                --           10,464          2,698               --
  Sales and marketing...     26,269           25,871                --           52,140         20,562               --
  General and
    administrative......     11,887           27,674                --           39,561         15,712               --
  In-process research
    and development
    charge..............     13,600               --                --           13,600             --               --
  Amortization of
    goodwill and other
    intangibles.........      7,819               --           194,478(g)       202,297          2,353           (2,353)(j)
                                                                                                                  6,030(k)
                           --------         --------         ---------        ---------        -------          -------
    Operating income
      (loss)............    (54,824)            (224)         (194,478)        (249,526)         5,011           (3,677)
                           --------         --------         ---------        ---------        -------          -------
Other income (loss),
  net...................      1,344           (3,642)              113(h)        (2,185)            --               --
Loss before provision
  (benefit) for income
  taxes.................    (53,480)          (3,866)         (194,365)        (251,711)         5,011           (3,677)
                           --------         --------         ---------        ---------        -------          -------
Provision (benefit) for
  income taxes..........         --              410              (388)(i)           22          2,723           (1,834)(l)
                           --------         --------         ---------        ---------        -------          -------
Net income (loss).......   $(53,480)        $ (4,276)        $(193,977)       $(251,733)       $ 2,288          $(1,843)
                           ========         ========         =========        =========        =======          =======
Basic and diluted net
  loss per common
  share.................   $  (0.86)                                          $   (3.64)
                           ========                                           =========
Weighted average common
  shares outstanding
  used in basic and
  diluted per common
  share calculation
  (7)...................     62,391                                              69,162
                           ========                                           =========

<CAPTION>
                            TOTAL
                          PRO FORMA
                          COMBINED
                          ---------
<S>                       <C>
REVENUES:
Exchange transaction
  sales.................  $ 539,127
Cost of exchange
  transaction
  sales.................    481,241
                          ---------
  Net exchange
    revenues............     57,886
E-enablement,
  e-commerce,
  advertising and
  services revenues.....     72,589
                          ---------
  Combined revenues.....    130,475
OTHER COSTS AND
  EXPENSES:
  Editorial and
    operational.........     15,603
  Product development...     13,162
  Sales and marketing...     72,702
  General and
    administrative......     55,273
  In-process research
    and development
    charge..............     13,600
  Amortization of
    goodwill and other
    intangibles.........    208,327
                          ---------
    Operating income
      (loss)............   (248,192)
                          ---------
Other income (loss),
  net...................     (2,185)
Loss before provision
  (benefit) for income
  taxes.................   (250,377)
                          ---------
Provision (benefit) for
  income taxes..........        911
                          ---------
Net income (loss).......  $(251,288)
                          =========
Basic and diluted net
  loss per common
  share.................  $   (3.33)
                          =========
Weighted average common
  shares outstanding
  used in basic and
  diluted per common
  share calculation
  (7)...................     75,493
                          =========
</TABLE>

                            See accompanying notes.
                                       16
<PAGE>   27

                               VERTICALNET, INC.

              UNAUDITED PRO FORMA COMBINED STATEMENT OF OPERATIONS
                  FOR THE NINE MONTHS ENDED SEPTEMBER 30, 2000
                     (IN THOUSANDS, EXCEPT PER SHARE DATA)
<TABLE>
<CAPTION>
                                                                               ADJUSTED
                             HISTORICAL      HISTORICAL        PRO FORMA      VERTICALNET     HISTORICAL        PRO FORMA
                             VERTICALNET   ACQUISITIONS(4)   ADJUSTMENTS(4)      TOTAL      SIERRACITIES(1)   ADJUSTMENTS(5)
                             -----------   ---------------   --------------   -----------   ---------------   --------------
<S>                          <C>           <C>               <C>              <C>           <C>               <C>
REVENUES:
Exchange transaction
  sales....................   $ 496,770        $63,589          $     --       $ 560,359       $     --          $    --
Cost of exchange
  transaction sales........     413,791         53,424                --         467,215             --               --
                              ---------        -------          --------       ---------       --------          -------
  Net exchange revenues....      82,979         10,165                --          93,144             --               --
E-enablement, e-commerce,
  advertising and services
  revenues.................      71,763             54                --          71,817         34,166               --
                              ---------        -------          --------       ---------       --------          -------
  Combined revenues........     154,742         10,219                --         164,961         34,166               --
OTHER COSTS AND EXPENSES:
  Editorial and
    operational............      28,801             --                --          28,801          6,112               --
  Product development......      22,100          4,759                --          26,859          2,006               --
  Sales and marketing......      93,770          5,252                --          99,022         13,706               --
  General and
    administrative.........      61,556          6,494                --          68,050         15,615               --
  Branch restructuring
    charge.................          --             --                --              --          6,013               --
  In-process research and
    development charge.....      10,000             --                --          10,000             --               --
  Amortization of goodwill
    and other
    intangibles............     125,567             --            37,634(g)      163,201          1,873           (1,873)(j)
                                                                                                                   4,522(k)
                              ---------        -------          --------       ---------       --------          -------
    Operating income
      (loss)...............    (187,052)        (6,286)          (37,634)       (230,972)       (11,159)          (2,649)
                              ---------        -------          --------       ---------       --------          -------
Other income (loss), net...      68,954           (435)               --          68,519             --               --
Loss before provision
  (benefit) for income
  taxes....................    (118,098)        (6,721)          (37,634)       (162,453)       (11,159)          (2,649)
                              ---------        -------          --------       ---------       --------          -------
Provision (benefit) for
  income taxes.............          --            285              (285)(i)          --         (3,695)           3,249(l)
                              ---------        -------          --------       ---------       --------          -------
Net loss...................    (118,098)        (7,006)          (37,349)       (162,453)        (7,464)          (5,898)
Preferred dividends........      (2,972)            --                --          (2,972)            --               --
                              ---------        -------          --------       ---------       --------          -------
Loss attributable to common
  shareholders.............   $(121,070)       $(7,006)         $(37,349)      $(165,425)      $ (7,464)         $(5,898)
                              =========        =======          ========       =========       ========          =======
Basic and diluted net loss
  per common share.........   $   (1.49)                                       $   (2.00)
                              =========                                        =========
Weighted average common
  shares outstanding used
  in basic and diluted per
  share common
  calculation(7)...........      81,508                                           82,661
                              =========                                        =========

<CAPTION>
                               TOTAL
                             PRO FORMA
                             COMBINED
                             ---------
<S>                          <C>
REVENUES:
Exchange transaction
  sales....................  $ 560,359
Cost of exchange
  transaction sales........    467,215
                             ---------
  Net exchange revenues....     93,144
E-enablement, e-commerce,
  advertising and services
  revenues.................    105,983
                             ---------
  Combined revenues........    199,127
OTHER COSTS AND EXPENSES:
  Editorial and
    operational............     34,913
  Product development......     28,865
  Sales and marketing......    112,728
  General and
    administrative.........     83,665
  Branch restructuring
    charge.................      6,013
  In-process research and
    development charge.....     10,000
  Amortization of goodwill
    and other
    intangibles............    167,723
                             ---------
    Operating income
      (loss)...............   (244,780)
                             ---------
Other income (loss), net...     68,519
Loss before provision
  (benefit) for income
  taxes....................   (176,261)
                             ---------
Provision (benefit) for
  income taxes.............       (446)
                             ---------
Net loss...................   (175,815)
Preferred dividends........     (2,972)
                             ---------
Loss attributable to common
  shareholders.............  $(178,787)
                             =========
Basic and diluted net loss
  per common share.........  $   (2.01)
                             =========
Weighted average common
  shares outstanding used
  in basic and diluted per
  share common
  calculation(7)...........     88,992
                             =========
</TABLE>

                            See accompanying notes.
                                       17
<PAGE>   28

    NOTES TO THE UNAUDITED PRO FORMA COMBINED CONDENSED FINANCIAL STATEMENTS

1  Certain reclassifications were made to conform the financial statement
presentation of SierraCities to the financial statement presentation of
VerticalNet.

     The amounts presented as e-enablement, e-commerce, advertising and services
revenues for SierraCities are comprised of the following historical balances:

<TABLE>
<CAPTION>
                                                                               NINE MONTHS
                                                               YEAR ENDED         ENDED
                                                              DECEMBER 31,    SEPTEMBER 30,
                                                                  1999            2000
                                                              ------------    -------------
                                                                     (IN THOUSANDS)
<S>                                                           <C>             <C>
Gain on sale of lease financing receivables through
  securitized transactions..................................    $    811        $  3,270
Gains from direct sales of lease financing receivables......      16,473           5,276
Interest income.............................................      72,343          75,896
Servicing income............................................       7,455           6,138
Other income................................................       5,268           3,512
Interest expense............................................     (37,554)        (44,523)
Provision for credit losses on lease financing receivables
  and investment in trust certificates......................     (11,756)        (15,403)
                                                                --------        --------
                                                                $ 53,040        $ 34,166
                                                                ========        ========
</TABLE>

     Additional reclassifications include combining SierraCities' investment in
trust certificates with long-term investments on the unaudited pro forma
combined condensed balance sheet.

2  VerticalNet will account for the acquisition of SierraCities under the
purchase method of accounting. The accompanying unaudited pro forma combined
condensed financial statements reflect an estimated aggregate purchase price of
approximately $137.3 million, consisting of the fair value of approximately
6,331,000 shares of VerticalNet's common stock and VerticalNet's transaction
costs of approximately $4.0 million.

     The accompanying unaudited pro forma combined condensed balance sheet has
been prepared as if the merger was consummated on September 30, 2000. The
following pro forma adjustments were made:

     (a) To record the consideration given and the accrual of estimated
         transaction costs to be paid by the respective parties.

     (b) To record the allocation of the purchase price to the net assets of
SierraCities (in thousands):

<TABLE>
<S>                                                         <C>
Total purchase price......................................  $137,343
Fair value of identifiable net assets acquired............   107,194
                                                            --------
Excess of purchase price over fair value of identifiable
  net assets..............................................  $ 30,149
                                                            ========
</TABLE>

       The above represents the allocation of the purchase price over the
       historical net book values of the acquired assets and assumed liabilities
       of SierraCities as of September 30, 2000, and is for illustrative
       purposes only. The actual purchase price allocation will be based on the
       actual purchase price and fair values of the acquired assets and assumed
       liabilities as of the closing date.

     (c) To record the elimination of SierraCities' stockholders' equity.

     (d) To record the elimination of SierraCities' historical intangible
         assets.

     (e) To record a valuation allowance against SierraCities' deferred tax
         assets due to the uncertainty around whether VerticalNet could realize
         such assets.

                                       18
<PAGE>   29

3  To record the pro forma effects on the unaudited pro forma combined condensed
balance sheet of the transactions that SierraCities has agreed to use its
reasonable best efforts to effect as a part of the merger.

     (f) To record the sale of substantially all of the loan and lease
         portfolios and the disposition of certain other assets. The net effect
         of these transactions on the results of the operations of SierraCities
         prior to the close of the merger is expected to be a pre-tax loss of
         approximately $18.1 million.

4  To adjust the historical results of operations for VerticalNet to include
certain previously acquired companies. The components of historical combined
revenues, operating expenses and net income (loss) reflected for the prior
material acquisitions during the respective periods are as follows:

                      FOR THE YEAR ENDED DECEMBER 31, 1999
                                 (IN THOUSANDS)

<TABLE>
<CAPTION>
ACQUIRED COMPANY            COMBINED REVENUES    OPERATING EXPENSES    NET INCOME(LOSS)
----------------            -----------------    ------------------    ----------------
<S>                         <C>                  <C>                   <C>
Techspex..................       $   151              $   193              $   (55)
Labx......................           155                  119                   28
CertiSource...............           765                1,220                 (128)
Isadra....................            --                5,558               (5,621)
NECX......................        35,850               32,725                  312
RW Electronics............        19,706               13,151                5,189
Tradeum...................            50                3,935               (4,001)
</TABLE>

                  FOR THE NINE MONTHS ENDED SEPTEMBER 30, 2000
                                 (IN THOUSANDS)

<TABLE>
<CAPTION>
ACQUIRED COMPANY            COMBINED REVENUES    OPERATING EXPENSES    NET INCOME(LOSS)
----------------            -----------------    ------------------    ----------------
<S>                         <C>                  <C>                   <C>
RW Electronics............       $10,165              $ 4,841              $  4,602
Tradeum...................            54               11,664               (11,608)
</TABLE>

     (g) To record the amortization of acquired goodwill and other intangible
         assets related to the above acquisitions in the appropriate periods
         presented.

     (h) To record the elimination of interest expense.

     (i) To adjust the tax provisions for each of the respective periods.

5  Pro forma adjustments resulting from the merger with SierraCities were made
to:

     (j) Eliminate historical amortization expense for goodwill and other
         intangible assets.

     (k) Record the amortization of acquired goodwill and other intangible
         assets, assuming amortization over a five year estimated life.

     (l) Adjust the tax provisions for each of the respective periods.

6  On October 31, 2000, VerticalNet and Sumitomo Corporation entered into a
definitive agreement under which Sumitomo will make a $30.0 million equity
investment in VerticalNet through the purchase of shares of our common stock.
Under the agreement, Sumitomo may not transfer the purchased shares for one year
from the closing date of the transaction. Sumitomo will also be granted limited
demand and piggyback registration rights exercisable after the first anniversary
of the closing. The transaction is expected to close following the receipt of
requisite regulatory approvals and the fulfillment of customary closing
conditions. However, there can be no assurance that the investment by Sumitomo
will be consummated.

                                       19
<PAGE>   30

7  The weighted average common shares outstanding used to calculate basic and
diluted net loss per share for the adjusted historical results of operations of
VerticalNet for the year ended December 31, 1999 and the nine months ended
September 30, 2000 have been increased by approximately 6,771,000 shares and
1,153,000 shares, respectively, to reflect the incremental impact previously
completed material acquisitions. The number of shares used to calculate the
weighted average common shares outstanding used to calculate the pro forma basic
and diluted net loss per share was further increased by approximately 6,331,000
shares in both periods for the estimated number of shares to be issued as
consideration for the merger with SierraCities assuming an exchange ratio of
$7.00 per share and a VerticalNet market price per share of $21.0625, which was
VerticalNet's closing price on November 10, 2000. No effect has been given in
the weighted average common shares outstanding calculation for shares issuable
under our pending agreement with Sumitomo.

                                       20
<PAGE>   31

                                  RISK FACTORS

     In deciding whether to tender your shares pursuant to the offer, you should
read carefully this prospectus, the accompanying Schedule 14D-9 of SierraCities
and the documents to which we refer you. You should also carefully consider the
following factors:

RISKS RELATED TO THE PROPOSED OFFER AND MERGER

     The VerticalNet Common Shares to Be Received by SierraCities Stockholders
     in the Offer and the Merger Will Fluctuate in Value.

     The VerticalNet average trading price will be determined two trading days
prior to the closing of the offer and will be based on the trading prices during
the preceding ten trading days. Accordingly, it is possible that the market
price of our shares at the closings of the offer and the merger will differ from
the VerticalNet average trading price and, if so, the market value of the
consideration to be received by you for each SierraCities share you surrender,
as of the closing of the offer, will be more or less than $7.00 per share
depending on the direction of the price movement. For example, if the
VerticalNet average trading price is less than $21.00, then the fraction of a
VerticalNet share that you receive in the merger for each SierraCities share you
surrender may have a market value of less than $7.00 per share. The price of the
VerticalNet shares may vary significantly from the market prices used in the
calculation of the VerticalNet average trading price.

     Each stockholder is urged to obtain updated market information. See
"Comparative Market Price Information," "Market Prices and Dividends," and "The
Offer -- Basic Terms."

     The VerticalNet Average Trading Price May Decline.

     The exchange ratio generally fluctuates so that SierraCities stockholders
will receive more shares of our common stock for the shares of SierraCities
common stock they surrender in the offer or the merger if our stock price
decreases. We will, however, fix the exchange ratio at .3333 if the VerticalNet
average trading price is less than $21.00. Therefore, SierraCities stockholders
will receive a maximum of .3333 shares of our common stock for each share of
SierraCities common stock they surrender regardless of how far the VerticalNet
average trading price drops below $21.00, subject to SierraCities' termination
right if the VerticalNet average trading price is less than $15.00. SierraCities
stockholders generally will receive less value for each share of SierraCities
common stock they surrender if the VerticalNet average trading price drops below
$21.00. See "The Offer -- Basic Terms" on page 42 for an illustration of this
risk.

     If We Complete Our Proposed Acquisition of SierraCities, We Might Have
     Difficulties Integrating SierraCities' Business into our Existing
     Operations, as Well as Face New Risks that We Have Not Previously Faced.

     If we complete the proposed combination, we must integrate the businesses
of two companies that have previously operated independently. We might not be
able to integrate SierraCities' business, including its products, services,
technologies and personnel, into our existing operations without encountering
difficulties. The diversion of management's attention to the integration effort
and any difficulties encountered in combining operations could adversely affect
the companies' respective businesses following the completion of the merger.

     Following the closing of the proposed transaction, we intend to restructure
SierraCities' current funding strategy. Under its current strategy, SierraCities
funds loans and leases with equity, then moves them into a warehouse facility
provided by one of its credit sources and, from time to time, effects a
securitization of these assets. We intend to establish flow arrangements with
selected financial institution partners under which loans and leases will be
originated by SierraCities and immediately sold for a fee to the flow partners.
If we cannot establish flow arrangements with a sufficient number of financial
institution partners on a timely basis or at all, we will not be successful in
restructuring this strategy and, thus, we will not be able to minimize the size
of the balance sheet associated with the SierraCities business and to

                                       21
<PAGE>   32

reduce our exposure to credit risk. Additionally, we could face additional risks
inherent in SierraCities' business that were previously irrelevant to our
business, such as:

     - We might be dependent on securitized warehouse facilities and the public
       securitization market to finance and refinance leases and loans. If, for
       any reason, we could not access these financing sources for that purpose,
       or if the terms and condition of any future facility or securitization
       differ from SierraCities' previous facilities or securitizations, our
       business, financial condition and results of operations following the
       closing could suffer.

     - The amount of additional funds we might otherwise require in the future
       to fund our operations could be significantly increased due to the
       capital requirements of SierraCities' business.

     - Increases in interest rates could reduce our operating margins, which
       would adversely affect our results of operations, as well as cause us to
       raise the rates we would charge our customers, which could reduce the
       demand for the products and services we provide.

     - Borrower and lessee defaults might impair our liquidity under
       SierraCities existing financing and securitization arrangements, as well
       as our ability to obtain financing and effect public securitizations as
       might be necessary in the future.

Ultimately, SierraCities' business is a business in which we have little
experience. Our inexperience in managing a business like SierraCities might
cause us never to realize any of the intended benefits of the transaction.

  Officers and Directors of SierraCities Have Potential Conflicts of Interest in
  the Offer and the Merger.

     SierraCities stockholders should be aware of potential conflicts of
interest and the benefits available to SierraCities directors when considering
SierraCities' board of directors' recommendation to approve the transaction.
Some of SierraCities officers (one of whom is a director) have employment
agreements with VerticalNet that will be effective upon the consummation of the
merger and that provide them with interests in the merger that are different
from, or in addition to, interests of SierraCities stockholders. See "Interests
of Certain Persons" on page 64.

  The Market Price of Our Common Stock May Be Affected by Factors Different from
  Those Affecting the Market Price of SierraCities Common Stock.

     Upon completion of the offer and the merger, holders of SierraCities common
stock will become holders of our common stock. Our business differs from that of
SierraCities, and our results of operations, as well as the market price of our
common stock, may be affected by factors different from those affecting
SierraCities' results of operations and the market price of SierraCities' common
stock. For a discussion of VerticalNet's and SierraCities' businesses and
information to consider in evaluating such businesses, you should review our
Annual Report on Form 10-K for the fiscal year ended December 31, 1999, our
subsequent quarterly and current reports, SierraCities' Annual Report on Form
10-K for the fiscal year ended December 31, 1999 and their subsequent quarterly
and current reports, all of which are incorporated by reference in this
prospectus.

  Potentially Significant Increases in Amortization Expense from Preliminary
  Estimates Reflected in the Unaudited Pro Forma Financial Information May Occur
  Once the Purchase Consideration Is Finally Allocated to SierraCities' Net
  Assets Which Would Cause Net Losses To Increase.

     Pro forma results of operations reflect adjustments, which are based upon
preliminary estimates, to reflect the allocation of the purchase consideration
to the acquired assets and liabilities of SierraCities. The final allocation of
the purchase consideration will be determined after the completion of the merger
and will be based on appraisals and a comprehensive final evaluation of the fair
value of SierraCities' tangible assets, liabilities and identifiable intangible
assets at the time of the merger. Accordingly, the final determination of
tangible and intangible assets may result in amortization expense that is
significantly

                                       22
<PAGE>   33

higher than the preliminary estimates of these amounts, which would cause our
net losses to increase. See the notes contained in "Unaudited Pro Forma Combined
Condensed Financial Statements."

  Our Industries are Highly Competitive.

     The business-to-business e-commerce, vertical marketplace and small
business finance industries are highly competitive. The combined company will
face intense competition in all facets of its business and may encounter
competition from new competitors, including established business-to-business
e-commerce, vertical marketplace and finance companies with substantial
resources. Some of our competitors may have financial, technical, marketing or
other capabilities more extensive than ours and may be able to respond more
quickly than we can to new or emerging technologies and other competitive
pressures. We may not be able to compete successfully against our present or
future competitors, which may adversely affect our business, financial condition
and results of operations.

  The Receipt of VerticalNet Shares May Be Taxable to You, Depending on Facts
  Surrounding the Offer and the Merger

     We and SierraCities have structured the offer and the merger to qualify as
a reorganization for U.S. federal income tax purposes and have been advised by
our respective counsel that it is their opinion that, although the matter is not
free from doubt, for U.S. federal income tax purposes the offer and the merger
will so qualify if, among other things, (a) the merger is completed promptly
after the offer, (b) the offer and the merger are completed under the current
terms of the merger agreement and (c) the minimum tender condition for the offer
is satisfied. If the offer and the merger so qualify, no gain or loss will be
recognized for U.S. federal income tax purposes, and no U.S. federal income tax
will be payable, by a SierraCities stockholder upon receipt of our stock in the
offer or the merger (except for gain or loss recognized, and U.S. federal income
tax payable, with respect to the receipt of cash instead of any fraction of a
VerticalNet share). The ability to satisfy the foregoing assumptions, and
therefore the U.S. federal income tax consequences of the offer and the merger,
depends in part on facts that will not be available before the completion of the
merger. There can be no assurance that the merger will be completed or that the
other assumptions will be satisfied.

     If any of the assumptions are not satisfied, a SierraCities stockholder's
receipt of our shares in the offer or the merger could be a taxable transaction.
Because satisfaction of the assumptions is dependent in part on facts that will
not be available before the completion of the merger, if and when you tender
SierraCities shares in the offer you will not know whether the offer or the
merger, or both, will be tax free. You are urged to review carefully the section
below entitled "Material Federal Income Tax Consequences" beginning on page 65
for a more detailed discussion of the anticipated U.S. federal income tax
consequences and to consult your tax advisor regarding the tax consequences and
risks to you of your participation in the offer and the merger.

RISKS RELATED TO OUR BUSINESS

 Our Limited Operating History and Evolving Revenue Model Make It Difficult to
 Predict Our Future Operating Results and Evaluate Our Future Prospects.

     We launched our first vertical trade community in October 1995 and have a
relatively limited operating history. Our limited operating history, together
with our evolving revenue model and the rapidly changing e-commerce market,
makes predicting our future operating results and evaluating our future
prospects very difficult. Currently, a significant percentage of our overall
revenues are generated from our exchange operations, while our Internet-based
revenues are generated primarily from the sale of advertising on our vertical
trade communities. In the foreseeable future, we expect to continue generating a
significant percentage of our overall revenues from our exchange operations,
while diversifying our revenue stream by generating additional revenue from
e-commerce and software licensing and related services. We may not be able to
sustain our current revenues or generate additional revenues from multiple
sources. If we do not

                                       23
<PAGE>   34

sustain our current revenues or generate additional revenues from multiple
sources, our business, financial condition and operating results will suffer.

  We Anticipate Incurring Losses for the Foreseeable Future.

     As of September 30, 2000, our accumulated deficit was $190.9 million. For
the nine months ended September 30, 2000, we sustained a $121.1 million net
loss, after accounting for a preferred stock dividend accrual. We expect to
incur operating losses for the foreseeable future. We may never generate
operating profit or, if we do become profitable from operations, we may be
unable to sustain that profitability.

 We May Not Develop Significant Revenues from E-Commerce, Software Licensing and
 Related Services, Which Could Adversely Affect Our Future Growth.

     For the nine months ended September 30, 2000, approximately 10.0% of our
revenues, including approximately $3.0 million of on-line net exchange revenues,
were generated from e-commerce. Additionally, we are beginning to implement our
strategy regarding software licensing and related services. If we do not
generate increased revenues from e-commerce or significant revenues from
software licensing and related services, our business, financial condition and
operating results could be impaired. To generate significant e-commerce,
licensing and service revenues, we must continue to build and acquire
significant e-commerce capabilities and enhance our existing vertical trade
community technology. However, our internal efforts, as well as acquisitions we
have made or will make, to enhance our e-commerce capabilities and our
technologies may not provide the results we expect.

  If We Cannot Reduce or Contain Our Expenses, Our Operating Results Will
Suffer.

     Our limited operating history and our evolving revenue model make it
difficult to predict our future operating expenses. If we cannot reduce or
contain our expenses, our operating results will suffer. Some of our expenses
are fixed, including those related to non-cancelable agreements, equipment
leases and real estate leases. In addition, we plan to increase our operating
expenses significantly to:

     - launch additional vertical trade communities;

     - increase our sales and marketing operations;

     - enter into additional strategic relationships and assist us in fulfilling
       our obligations in our existing strategic relationships;

     - enhance our technologies;

     - develop and deploy our e-commerce and software licensing initiatives;

     - design and integrate a scalable on-line exchange for our NECX subsidiary;

     - enter into additional sponsorship agreements; and

     - broaden our customer support capabilities.

  Fluctuations in Our Quarterly Operating Results May Cause Our Stock Price to
Decline.

     Our quarterly operating results could vary significantly. We believe that
period-to-period comparisons of our operating results are not meaningful and
should not be relied on as indicators of future performance. If our operating
results in a future quarter or quarters do not meet the expectations of
securities analysts or investors, the price of our common stock may fall.

     We expect that our quarterly operating results will fluctuate significantly
due to various factors, many of which are beyond our control, including:

     - market conditions in the electronic components and hardware industry;

     - the amount and seasonal nature of our electronic component and hardware
       sales;

                                       24
<PAGE>   35

     - intense and increased competition in our target markets;

     - our ability to develop, introduce and market new products and services,
       as well as enhancements to our existing products and services, on a
       timely basis;

     - the level of demand for our products and services;

     - risks associated with past and future acquisitions;

     - management of our growth;

     - the seasonality of our revenues and user traffic; and

     - our dependence on content providers.

Any quarterly fluctuations in our exchange revenues may disproportionately
affect our operating results because our exchange revenues constitute a
substantial percentage of our overall revenues.

     In the course of our business, we may acquire securities of privately-held
companies with whom we form strategic relationships. Our quarterly operating
results may also fluctuate significantly due to accounting rules governing the
treatment of these securities. Specifically, before the market value of these
securities becomes readily determinable as a result of being tradable in a
public market, they are carried on our consolidated balance sheets at cost.
However, if these non-public securities become salable in the public market as a
result of a transaction in which such securities are exchanged for public
securities, accounting rules require us to record a non-operating gain or loss
equal to the difference between our cost and the market value of the public
securities received, regardless of whether we sell or retain the securities. Our
holdings in public securities are then marked to market at the end of each
quarter. If the market value of an equity security we own becomes readily
determinable and we sell that security, we will realize a gain or loss on the
transaction. These non-recurring gains or losses may occur from time to time and
could cause significant fluctuations in our quarterly results. Similarly, our
quarterly results may also fluctuate if we determine that a decline in the fair
value of one of our equity positions is other than temporary, which would
require us to write-down or write-off the carrying value of those securities.
During the three months ended September 30, 2000, we recorded a $1.0 million
impairment charge for an other than temporary decline in the fair value of one
of our cost method investments.

  The Electronics Industry Has Historically Experienced Shortages and
  Imbalances, Cycles, Downturns and Other Fluctuations in Demand That Could
  Adversely Affect Our Business.

     The growth of our electronics exchange business is materially dependent on
shortages and imbalances in the markets for electronic components and hardware.
If these shortages and imbalances are reduced or eliminated, the growth of our
electronics exchange business will decline, which would have a material adverse
effect on our business, financial condition and results of operations given the
significance of our exchange revenues to our overall revenues. For example, the
recent significant growth in our electronics exchange business can be
attributed, in part, to shortages and imbalances in the markets for capacitors
(ceramic and tantulum), flash memory and, more recently, storage devices and
hard drives. However, the shortages in the capacitor and flash memory markets
are over, and other shortages are not expected to continue indefinitely.
Management cannot predict, with any reasonable level of certainty, the duration
of the existing shortages or the magnitude of existing imbalances. To the extent
these shortages and imbalances shrink or disappear and are not replaced by
sustained shortages and imbalances in the markets for other electronic
components or hardware, the growth of our electronics exchange revenues will
decrease from recent levels and our overall financial performance will suffer.

     Historically, general economic downturns and business cycles also have had
an adverse economic effect upon participants in the electronics industry,
including hardware and component manufacturers, distributors and market makers
such as our NECX subsidiary. If economic conditions or the cyclical nature of
the electronic industry causes a reduction in the amount of electronic
components and hardware bought and sold, our business, financial condition and
operating results will be adversely affected.

                                       25
<PAGE>   36

     Additionally, in our exchange business we are exposed to inventory risk
when we purchase electronic components before we are able to locate a buyer for
these components. To the extent we are unable to sell that inventory, we may be
required to write-down the value of that inventory if we cannot sell it
promptly. Any such write-down would have a negative impact on our results of
operations and ultimately our business.

 If We Are Unable to Maintain Gross Profit Margins in Our Exchange Business, Our
 Operating Results Will Suffer.

     If the gross profit margins of our exchange business decrease, our business
could suffer. Gross profit margins in our exchange business are affected by
numerous factors, including the following:

     - component supply and demand;

     - inventory levels held by electronic manufacturers and distributors;

     - component lead times;

     - product sales mix; and

     - our ability to purchase components at favorable prices.

     Many of these factors are beyond our control. Additionally, our inability
to integrate our traditional off-line exchange business into an on-line business
might hinder our ability to increase gross margins in that segment.

 If Our Strategic Relationship with Microsoft Does Not Provide the Benefits We
 Expect, Our Business Will Be Materially and Adversely Affected.

     If we are ultimately unable, for any reason, to realize the benefits we
expect from our strategic relationship with Microsoft, our business, financial
condition and results of operations will be materially and adversely affected.
We believe this strategic relationship is critical to our success because it
offers the possibility of additional users of our vertical trade communities,
further acceptance and validation of our business strategy and model and
additional opportunities to generate e-enablement, e-commerce, advertising and
services revenues. However, we may never generate any significant additional
revenues or realize any of the other benefits expected from this relationship.
For example, if a significant percentage of businesses fail to renew the
storefronts that were purchased on their behalf by Microsoft, our financial
condition and operating results will be adversely affected.

     To reap any such benefits, we must first fulfill our obligations in this
relationship, which include, among other things, building and assisting
Microsoft with the distribution of storefronts and e-commerce centers. Meeting
these obligations will require substantial resources on our part, including
retraining existing employees and hiring additional personnel. It may also be
necessary for our management and other key personnel to divert their attention
from other aspects of our business in order to focus on our implementation of
the Microsoft relationship and to ensure that our other strategic relationships
take into account the Microsoft relationship. Additionally, if we fail to meet
the performance goals established under this relationship, we will need to pay
additional amounts to Microsoft. Accordingly, the material adverse effect on our
business that would result from a failure to realize the anticipated benefits
from this relationship would be magnified by our dedication of substantial
resources to this relationship and the payment of additional amounts to
Microsoft.

  We May Ultimately Be Unable to Compete in the Markets for the Products and
Services We Offer.

     The market for business-to-business e-commerce products and services is
intensely competitive. Increased competition may result in reduced margins and
loss of market share, either of which would seriously harm our business. We
expect the intensity of competition in our target markets to increase as the
amount of e-commerce transacted over the Internet grows, current competitors
expand their product and service offerings and new competitors enter the market.
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<PAGE>   37

     We are facing increased competition in each of our strategic business
units.

     - VerticalNet Markets.  Several companies offer competitive vertical trade
       communities. We expect that additional companies will offer competing
       vertical trade communities on a standalone or portfolio basis because
       competitors can launch new Web sites at a relatively low cost. We also
       compete for a share of a customer's advertising budget with on-line
       services and traditional off-line media, such as print publications and
       trade associations.

     - VerticalNet Exchanges.  The market for electronic components and hardware
       is also intensely competitive. Our competitors in the electronic
       components and hardware industry, which vary in size and in the scope of
       the services and features offered, include: component manufacturers;
       franchised and independent distributors; other market makers; electronic
       components brokers; on-line catalog aggregators; on-line excess surplus
       auction companies; enterprise software companies; e-procurement
       providers; and vertical content providers.

     - VerticalNet Solutions.  As we implement our strategy regarding licensing
       e-commerce and vertical trade community software and providing related
       professional and business operations services, we are facing competition
       from software companies whose products or services compete with a
       particular aspect of the solution we provide, as well as several major
       enterprise software developers.

     Many of our competitors have longer operating histories, greater brand
recognition and greater financial, technical, marketing and other resources than
we do, and may have well-established relationships with our existing and
prospective customers. This may place us at a disadvantage in responding to our
competitors' pricing strategies, technological advances, advertising campaigns,
strategic partnerships and other initiatives. Our competitors may also develop
products or services that are superior to, or have greater market acceptance
than, ours. If we are unable to compete successfully against our competitors,
our business, financial condition and operating results would be negatively
impacted.

 We May Not Realize Any Return On, and May Even Suffer a Complete Loss of, Our
 Equity Interests in Our Strategic Partners.

     We are increasingly asked to acquire equity interests in the companies with
whom we form strategic relationships. We may never realize any return on these
interests, which generally range from $500,000 to $3.0 million in any given
instance. In fact, we may suffer a complete loss of these equity interests,
which would materially and adversely affect our business and financial
condition. Our ability to realize a return on any of these equity positions is
far from certain, given that these companies have limited financial and other
resources, yet are subject to many of the same risks and uncertainties that we
face in our business, including limited operating histories, evolving revenue
models and uncertain market acceptance of their products and services. Moreover,
we are often unable to require terms and conditions related to these equity
interests (e.g., board membership or observer rights) that are particularly
favorable to us vis-a-vis other investors. Allocating our financial resources to
these types of strategic relationships, rather than reinvesting those funds
directly in our own business, may ultimately cause our business to suffer.

  Acquisitions May Negatively Impact Our Business.

     We have grown, and plan to continue to grow, our business through
acquisitions. If we are unable to complete future acquisitions, our business,
financial condition and operating results could be negatively impacted. We may
not be able to identify additional suitable businesses that are available for
sale at reasonable prices or on reasonable terms. Even if we are able to
identify appropriate acquisition candidates, we may not be able to negotiate the
terms of any acquisition successfully, finance the acquisition or integrate the
acquired business (including its products, services, technologies or personnel)
into our existing business operations. For example, we may be unsuccessful in
utilizing Tradeum's technology to build the on-line exchange platform for NECX.

                                       27
<PAGE>   38

     Our acquisition strategy is also subject to numerous other risks including,
without limitation, the following:

     - acquisitions may cause a disruption in our ongoing business, distract our
       management and other resources and make it difficult to maintain our
       standards, controls and procedures;

     - we may acquire companies in markets in which we have little experience;

     - we may not be able to retain key employees from acquired companies, and
       may face competition from employees that leave before or after an
       acquisition is complete;

     - we may be required to incur debt or may issue equity securities, which
       may be dilutive to existing shareholders, to pay for acquisitions;

     - we may not realize any return on our investment in the acquired company
       and may even lose our entire investment and incur significant additional
       losses;

     - our share price could decline following the market's reaction to our
       acquisitions;

     - our amortization expense will increase as a result of acquisitions; and

     - our interest deductions may be disallowed for federal income tax
       purposes.

 We May Not Be Able to Integrate Our Off-Line Exchanges Into an On-Line
 Business, Which Would Limit Our Ability to Generate Higher Revenues.

     Our acquisition of NECX and other exchanges have resulted in significant
revenues for us. However, our ability to sustain our current revenues or
possibly generate substantially higher revenues is not only dependent on market
conditions in the electronic components and hardware industry, but also on our
ability to integrate our off-line exchange business with an on-line business.
For the nine months ended September 30, 2000, NECX generated net revenues of
approximately $83.0 million, $3.0 million of which were attributable to its
on-line market-making business. By comparison, VerticalNet generated net
revenues of approximately $71.8 million for the nine months ended September 30,
2000, most of which were derived from e-enablement, e-commerce, advertising and
services.

     We have retained third parties to assist us in designing and building a new
on-line exchange for NECX. We expect this project to be expensive and
time-consuming. This project might not be completed at the cost and on the
timeline that we currently contemplate. If we cannot integrate NECX's
traditional off-line business effectively into our on-line business, whether due
to time, monetary or other limitations, the potential to sustain current revenue
and generate additional revenues through our exchange business may never be
realized, which could adversely affect our business, financial condition and
operating results.

 Our Proposed On-Line Exchange May Not Be Successful if It Is Not Adopted by a
 Significant Number of Buyers and Suppliers.

     Even if we are successful in developing an on-line exchange, it will not be
widely accepted if we do not successfully transition a portion of those buyers
and suppliers who use NECX's off-line business to an on-line exchange and
attract a significant number of additional buyers and suppliers to the on-line
exchange. Non-acceptance of our on-line exchange would limit the growth of our
e-commerce revenues and could adversely affect our business, financial condition
and operating results. Whether we can retain and attract buyers and suppliers to
an on-line exchange will depend in large part on our ability to design, develop
and implement a secure, user-friendly application with features and
functionality that buyers and suppliers find attractive in an e-commerce
solution and that provides substantial value to its users over traditional
procurement methods. Buyers and suppliers may continue purchasing and selling
products through traditional procurement methods, rather than adopting an
Internet-based solution. Buyers and suppliers also may not use our on-line
exchange if it is not perceived as a neutral marketplace that treats all
participants equally.

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<PAGE>   39

  If Our Advertising Revenues Decline, Our Business Would Suffer.

     We currently rely on revenues generated from the sale of advertising on our
vertical trade communities for a significant portion of our revenues. If we do
not continue to increase advertising revenues, our business may suffer. Our
ability to increase our advertising revenues depends on many factors, including,
without limitation:

     - acceptance of the Internet as a legitimate, effective and measurable
       medium for advertising and e-commerce;

     - the development of a large base of users on our vertical trade
       communities who possess demographic characteristics attractive to
       advertisers;

     - changes in industry pricing practices for advertising; and

     - the expansion of our sales and marketing force.

Other factors could also adversely affect our advertising revenues. For example,
widespread use of "filter" software programs that limit access to storefront
advertising from the Internet user's browser could reduce advertising on the
Internet. Additionally, no standards have been widely accepted to measure the
effectiveness of Internet advertising. If such standards do not develop,
existing advertisers may not continue their current levels of Internet
advertising, and advertisers who are not currently advertising on the Internet
may be reluctant to do so. These factors, as well as any other events or
circumstances that would cause a decline in the amount of advertising on the
Internet, would impair our business, financial condition and operating results.

     For some of our advertising customers, we provide extended payment terms
over the length of the contract, rather than collecting the entire payment up
front. To the extent that these amounts are not collected, our advertising
revenues, bad debt expense and cash flows may be negatively impacted. We also
have barter arrangements where we provide banner advertisements, storefronts and
newsletter sponsorships to some of our customers in exchange for advertising on
their Web sites or in their publications. If our barter arrangements do not
continue, our advertising revenues may decline. For the nine months ended
September 30, 2000, approximately $6.6 million, or 4.3%, of our reported revenue
was generated by barter advertising arrangements.

 Our Internet Content May Not Attract a Significant Number of Users with
 Demographic Characteristics Valuable to Advertisers.

     Our future success depends in part upon our ability to deliver compelling
Internet content that will attract a significant number of users with
demographic characteristics valuable to our advertising customers. Our inability
to develop Internet content that attracts a loyal user base with demographic
characteristics attractive to advertisers could impair our business, financial
condition and operating results. We face the challenge of developing content
that is attractive to users in an environment characterized by rapidly changing
user preferences, as well as the ease with which users can freely navigate and
instantly switch among a large number of Web sites, many of which offer content
that may be more attractive than ours. If we cannot consistently anticipate or
respond quickly to changes in user preferences or distinguish our content from
that offered on other Web sites, we may never attract a significant number of
users with demographic characteristics that advertisers are seeking.

 Our Failure to Build and Maintain Relationships with Third-Party Content
 Providers May Impair Our Operating Results.

     We rely on third parties, such as trade publications and news wires, to
provide some of the content for our vertical trade communities. It is critical
to our business that we maintain and build existing and new relationships with
content providers. However, we may not be able to do so, which could result in
decreased traffic on our vertical trade communities and decreased advertising
revenues. Many of our agreements with content providers are for initial terms of
one to two years. Content providers may choose

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<PAGE>   40

not to renew the agreements or terminate the agreements early if we do not
fulfill our contractual obligations. Moreover, like our existing agreements with
some of our content providers, our new and renewal agreements for third-party
content may be non-exclusive, which means that competitors may offer the same
content we offer or similar content. Additionally, the terms of any new or
renewal agreements we enter into may be less favorable to us than our existing
agreements. In particular, as competition for content increases, the licensing
fees we pay to our content providers may correspondingly increase, which would
negatively impact our operating results.

 If We Do Not Develop the "VerticalNet" Brand and the Brands Associated With Our
 Divisions and Business Units, Our Advertising Revenues Could Decrease.

     To be successful, we must establish and strengthen the brand awareness of
the "VerticalNet" brand, as well as the brands associated with our divisions and
business units. If our brand awareness is weakened, it could decrease the
attractiveness of our audiences to advertisers and reduce our relevant market
share, which could result in decreased revenues. We believe that brand
recognition will become increasingly important in the future with the growing
number of Internet sites and e-commerce solution providers. If customers do not
begin to associate secondary meaning with our brands, then our ability to gain
market share will be diminished, which could impair our business, financial
condition and operating results.

 If We Are Unable to Provide Our Customers and Users with Accurate Product
 Information, Our E-Commerce Strategy Will Not Succeed.

     To enable suppliers to conduct e-commerce through our vertical trade
communities, we currently are responsible for loading suppliers' product
information into our database and categorizing the information for search
purposes. This process entails a number of risks, including dependence on our
suppliers to provide us in a timely manner with accurate, complete and current
information about their products and to update this information promptly when it
changes. The actual loading of these products in our database may be delayed,
depending upon a number of factors, including the formatting of the data
provided to us and our ability to further automate and expand our operations to
load this data accurately in our product database.

     We are generally obligated under our supplier agreements to load and update
product data into our database within a specified period of time following its
delivery. While we intend to further automate the loading and updating of
supplier data on our system, we may not be able to do so in a timely manner, in
part because achieving the highest level of this automation is dependent upon
our suppliers' automating their delivery of product data to us. If our suppliers
do not provide us in a timely manner with accurate, complete and current
information about the products we offer, our database may not be useful to our
customers and users and may even expose us to liability. Although we screen our
suppliers' information before we make it available to our customers and users,
we cannot guarantee that the product information available in our database will
always be accurate, complete and current, or comply with governmental
regulations. Any resulting exposure to liability or decreased adoption and use
of our vertical trade communities could reduce our revenues and therefore have a
negative effect on our business, results of operations and financial condition.

 If Our Suppliers Do Not Provide Professional, Safe and Timely Delivery of
 Products to Our Customers, Our Business Will Be Harmed.

     We rely on our suppliers to deliver products to our customers in a
professional, safe and timely manner. If our suppliers do not deliver products
to our customers in this manner, then our service will not meet customer
expectations and our reputation and brand will be damaged. In addition,
deliveries that are nonconforming, late or are not accompanied by information
required by applicable law or regulations could expose us to liability or result
in decreased adoption and use of our vertical trade communities, which could
have a negative effect on our business, results of operations and financial
condition. In some instances, we bear the responsibility for product refunds and
returns and the risk of non-collectibility of accounts receivable from our
customers.
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<PAGE>   41

  Managing Our Rapid Growth Effectively Is Difficult.

     We have rapidly and significantly expanded our operations and expect to
continue to do so by adding new products and services, hiring new employees and
acquiring new businesses. This growth has placed, and is expected to continue to
place, a significant strain on our resources and systems. To manage our growth,
we must implement systems and train and manage our employees. If we fail to
implement systems, train and manage our employees or integrate our recent and
future acquisitions successfully, our business, financial condition and
operating results could be negatively impacted.

  Our Business Is Susceptible to Numerous Risks Associated with International
Operations.

     A substantial portion of our current business is based upon international
sales, which we believe will increase in the future. In addition, we purchase a
substantial amount of electronic components and hardware from entities based in
foreign countries. We are subject to a number of risks and uncertainties
associated with these international business activities. These risks and
uncertainties generally include:

     - difficulties in the enforcement of contractual obligations and
       intellectual property rights, including licensing rights, against foreign
       entities or in foreign jurisdictions;

     - currency exchange rate fluctuations and higher duty rates;

     - unexpected changes in regulatory requirements;

     - tariffs, import and export controls and regulations and other trade
       barriers;

     - longer accounts receivable payment cycles and difficulties in collecting
       accounts receivable;

     - increased costs and difficulties in managing and staffing international
       operations;

     - compliance with applicable United States and foreign laws, especially
       import/export requirements;

     - potentially adverse tax consequences, including restrictions on the
       repatriation of earnings;

     - the costs and burdens of complying with a wide variety of foreign laws
       and differing trade customs and practices;

     - political instability; and

     - potential transportation delays.

These factors may have a negative effect on current and future international
operations and, consequently, on our business, results of operations and
financial condition.

  Our International Expansion May Make It More Difficult to Manage Our Business.

     In June 2000, we completed the formation of VerticalNet Europe, our joint
venture with British Telecommunications, plc and Internet Capital Group, while
in July 2000, we completed the formation of VerticalNet Japan, our joint venture
with Softbank Commerce Corp. We expect to further expand in international
markets. However, this expansion strategy may fail if we cannot create or
sustain international demand for our evolving business model and the products
and services we offer. Moreover, even if we are able to identify appropriate
international joint venture partners, we may not be able to negotiate the terms
of any venture successfully, finance the venture or integrate our partners'
business, products or technology into our existing business operations, or we
may become dependent on our joint venture partners.

     To pursue our international expansion, we have established international
operations and hired senior management to oversee these operations. We also plan
to hire additional personnel and establish relationships with additional
suppliers and strategic partners. This expansion will require significant
management attention and financial resources and could have a negative effect on
our business, financial condition and results of operations.

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<PAGE>   42

 Risk of Failure of Our Computer and Communications Hardware Systems Increases
 Without Back-Up Facilities.

     The performance of our computer and communications hardware systems is
critical to our business and reputation, as well as our ability to process
transactions, provide high quality customer service and attract and retain
customers, suppliers, users and strategic partners. Any system interruptions
that cause our vertical trade communities or our on-line exchange to be
unavailable to users may reduce their attractiveness to advertisers, buyers and
suppliers and could impair our business, financial condition and operating
results. We do not currently have back-up or redundant facilities for our
computer or communications hardware systems.

 Capacity Limits on Our Technology, Transaction Processing System and Network
 Hardware and Software May Be Difficult to Project and We May Not Be Able to
 Expand and Upgrade Our Systems to Meet Increased Use.

     As traffic on our vertical trade communities and our on-line exchange
increases, we must expand and upgrade our technology, transaction processing
systems and network hardware and software. We may not be able to project
accurately the rate of increase of traffic on our vertical trade communities or
on-line exchange. In addition, we may not be able to expand and upgrade our
systems and network hardware and software capabilities to accommodate increased
use of our vertical trade communities and on-line exchange. If we do not
appropriately upgrade our technology, systems and network hardware and software,
our business, financial condition and operating results will suffer.

 Our Market Is Evolving and Is Characterized by Rapid Technological Change,
 Which We May Not Be Able to Keep Pace with in a Cost-Effective Way.

     The market for business-to-business e-commerce products and services is
evolving and characterized by rapid technological change and frequent new
product and service announcements. Significant technological changes could
render our existing e-commerce or vertical trade community technology obsolete.
If we are unable to respond to these developments successfully or do not respond
in a cost-effective way, our business, financial condition and operating results
will suffer. To be successful, we must adapt to our rapidly changing market by
continually improving and enhancing the responsiveness, services and features of
our vertical trade communities, by developing new services and technology to
meet customer needs and by continuing to integrate our off-line exchange
business with an on-line exchange. Our success will depend in part on our
ability to acquire or license leading technologies useful in our business, which
we may not to be able to do.

  Our Interests May Conflict with Those of Internet Capital Group, Our Largest
  Shareholder, Which May Affect Our Business Strategy and Operations Negatively.

     As a result of its stock ownership and board representation, Internet
Capital Group is in a position to affect our business strategy and operations,
including corporate actions such as mergers or takeover attempts, in a manner
that could conflict with the interests of our public shareholders. At November
1, 2000, Internet Capital Group beneficially owned 25,318,644 shares, or
approximately 28.9%, of our common stock, which includes 250,000 shares of our
common stock underlying $5.0 million of our 5 1/4% convertible subordinated
debt, and 478,624 shares of our common stock underlying warrants issued to
Internet Capital Group prior to the IPO. Two representatives of Internet Capital
Group are members of our board of directors. We may compete with Internet
Capital Group for Internet-related opportunities as it seeks to expand its
number of business-to-business assets, in part through acquisitions and
investments. Internet Capital Group, therefore, may seek to acquire or invest in
companies that we would find attractive. While we may partner with Internet
Capital Group on future acquisitions or investments, we have no current
contractual obligations to do so. We do not have any contracts or other
understandings that would govern resolution of this potential conflict. This
competition, and the potential conflict posed by the designated directors, may
deter companies from partnering with us and may limit our business
opportunities.
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<PAGE>   43

     Additionally, in order to avoid registration under the Investment Company
Act of 1940, Internet Capital Group may need to own more than 25% of our voting
securities. If its ownership interest falls below 25%, Internet Capital Group
may need to purchase additional voting securities to return to an ownership
interest of at least 25% in order to avoid having to register as an investment
company. The possible need of Internet Capital Group to maintain a 25% ownership
position could adversely influence its decisions regarding actions that may
otherwise be in the best interests of our public shareholders.

     Additionally, significant changes in Internet Capital Group's ownership of
our common stock could adversely affect our common stock's market price. For
example, rather than purchase additional voting securities as described in the
preceding paragraph, Internet Capital Group may choose to liquidate its position
entirely to avoid having to register as an investment company. If Internet
Capital Group sells all or part of its investment in us, whether to comply with
the Investment Company Act of 1940, to raise additional capital or otherwise,
then the market price of our common stock could fall.

 Our Success Depends on Our Key Personnel Who We May Not Be Able to Retain, and
 We May Not Be Able to Hire Enough Additional Personnel to Meet Our Needs.

     We believe that our success depends on continued employment of our senior
management team. If one or more members of our senior management team were
unable or unwilling to continue in their present positions, our business,
financial condition and operating results could be materially adversely
affected. As of November 1, 2000, only one member of our senior management team
had an employment agreement. We carry key person life insurance on certain, but
not on all, of our senior management personnel.

     Our success also depends on having a highly trained technical staff, sales
force, telesales group and customer service organization. We will need to
continue to hire additional personnel as our business grows. Competition for
personnel, particularly for employees with technical expertise, is intense. A
shortage in the number of trained technical personnel, salespeople and customer
service professionals could limit our ability to design, develop and implement
our e-commerce solutions and other technology, increase sales in our existing
vertical trade communities and make new sales as we launch new vertical trade
communities and form other strategic relationships. Ultimately, our business,
financial condition and operating results will be impaired if we cannot hire and
retain suitable personnel.

  Our Success Depends on the Development of the E-Commerce Market, Which Is
Uncertain.

     Business-to-business e-commerce is a new and emerging business practice
that remains largely untested in the marketplace and depends on the increased
acceptance and use of the Internet as a medium of commerce. If e-commerce does
not grow or grows more slowly than expected, our business will suffer. Our
long-term success depends on widespread market acceptance of e-commerce.

     A number of factors could prevent such acceptance, including the following:

     - buyers may be unwilling to shift their purchasing from traditional
       vendors to on-line vendors;

     - the necessary network infrastructure for substantial growth in usage of
       the Internet may not be adequately developed;

     - customers and suppliers may be unwilling to use on-line vendors due to
       security and confidentiality concerns;

     - increased government regulation or taxation may adversely affect the
       viability of e-commerce;

     - insufficient availability of, or changes in, telecommunication services
       could result in slower response times or inconsistent service quality;

     - e-commerce transactions generally lack the human contact that traditional
       suppliers provide; and

     - lack of availability of cost-effective, high-speed Internet service.

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<PAGE>   44

 Security Risks and Concerns May Deter the Use of the Internet For Conducting
 E-Commerce.

     The secure transmission of confidential information over the Internet is
essential to maintaining customer and supplier confidence. Concerns regarding
security of transactions and transmitting confidential information over the
Internet may negatively impact our business. We believe that concerns regarding
the security of confidential information transmitted over the Internet, such as
credit card numbers, prevent many potential customers from engaging in on-line
transactions. If we do not add sufficient security features to future product
releases, our products may not gain market acceptance or we may incur additional
legal exposure. We have included basic security features in some of our products
to protect the privacy and integrity of customer data, such as password
requirements for access to portions of our vertical trade communities. We
currently use authentication technology, which requires passwords and other
information to prevent unauthorized persons from accessing a customer's
information. We also use encryption technology, which transforms information
into a "code" designed to be unreadable by third parties, to protect
confidential information such as credit card numbers in commerce transactions.

     Despite the measures we have taken, our infrastructure is potentially
vulnerable to physical or electronic break-ins, viruses or similar problems. If
a person circumvents our security measures, he or she could misappropriate
proprietary information or cause interruptions in our operations. Security
breaches that result in access to confidential information could damage our
reputation and expose us to a risk of loss or liability. We may be required to
make significant investments and efforts to protect against or remedy security
breaches. Additionally, as e-commerce becomes more prevalent, our customers will
become more concerned about security. Our failure to address these concerns
adequately could impair our business, financial condition and operating results.

  Limited Internet Infrastructure May Harm Our Business.

     The significant growth of Internet traffic over a relatively short period
of time has caused frequent periods of decreased Internet performance, delays
and, in some cases, system outages. These problems are caused by limitations
inherent in the technology infrastructure supporting the Internet and the
internal networks of Internet users. If our existing or potential customers
experience frequent outages or delays on the Internet, our business may grow
more slowly than we expect or even decline. Our ability to grow our business is
limited by and depends upon the reliability of both the Internet and the
internal networks of our existing and potential customers. If improvements in
the infrastructure supporting both the Internet and the internal networks of our
customers and suppliers are not made timely, we may have difficulty obtaining
new customers or maintaining our existing customers, either of which could
reduce our potential revenues and have a negative impact on our business,
results of operations and financial condition.

 We May Not Be Able to Protect Our Proprietary Rights and May Infringe the
 Proprietary Rights of Others.

     Proprietary rights are important to our success and our competitive
position. As of November 1, 2000, we own and use 30 trademarks registered with
the United States Patent and Trademark Office ("PTO"). Additionally, we have 46
applications for registration of various trademarks pending with the PTO.
Outside of the United States, as of November 1, 2000, we own and use 14
trademarks registered with various foreign patent and trademark offices and have
39 applications pending with foreign patent and trademark offices. Likewise, as
of November 1, 2000, we have 9 patent applications pending with the PTO and we
own 1820 domain names. We may be unable to register, maintain and protect our
proprietary rights adequately or to prevent others from claiming violations of
their proprietary rights. Generally, our domain names for our vertical trade
communities cannot be protected as trademarks because they are considered
"generic" under applicable law. In addition, effective copyright, trademark,
patent and trade secret protection may be unavailable or limited in certain
countries, and the global nature of the Internet makes it impossible to control
the ultimate destination of our work. We also license content from third
parties, which makes it possible that we could become subject to infringement
actions based upon the content licensed from those third parties. We generally
obtain representations as to the origin and ownership of such licensed content
and indemnification from those third parties; however, this may not adequately
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<PAGE>   45

protect us. Any of these claims, regardless of their merit, could subject us to
costly litigation and the diversion of our technical and management personnel.

 We May Be Subject to Legal Liability for Publishing or Distributing Content
 over the Internet.

     We may be subject to legal claims relating to the content on our vertical
trade communities, or the downloading and distribution of such content. Claims
could also involve matters such as defamation, invasion of privacy and copyright
infringement. Providers of Internet products and services have been sued in the
past, sometimes successfully, based on the content they offer. In addition, some
of the content provided on our vertical trade communities is drawn from data
compiled by other parties, including governmental and commercial sources, and we
re-key the data. This data may have errors. If our content is improperly used or
if we supply incorrect information, it could result in unexpected liability. Our
insurance may not cover claims of this type, or may not provide sufficient
coverage. Our business, financial condition and operating results could suffer
materially if costs resulting from these claims are not covered by our insurance
or exceed our coverage.

  We May Be Exposed to Product Liability and Other Commercial Claims.

     We face potential liability for claims based on the nature of the products
that we sell and distribute, including claims for breach of warranty, product
liability, misrepresentation, violation of governmental regulations and other
commercial claims. Most of the manufacturers whose products we distribute have
warranties on those products. We pass that warranty through to our customers
whenever possible. However, in some instances we bear the risk of loss of
revenue from the product sale if a purchaser does not pay for a defective
product. Although we maintain general liability insurance, our insurance may not
cover some claims or penalties, is subject to policy limits and exclusions and
may not adequately indemnify us or our employees from any civil, governmental or
criminal liability. Furthermore, this insurance may not be available at
commercially reasonable rates in the future. Any liability not covered by our
insurance or in excess of our insurance coverage could have a negative effect on
our business, financial condition and operating results.

 We Are Subject to Government Regulation That Exposes Us to Potential Liability
 and Negative Publicity.

     We currently rely upon our suppliers to meet all packaging, distribution,
labeling, hazard and health information notices to purchasers, record keeping
and licensing requirements applicable to our business during the entire
transaction. However, our reliance on our suppliers may not be sufficient to
protect our legal interests. For example, if we are held to be a seller or a
distributor of regulated products because we took legal title, we may have
inadvertently violated some governmental regulations by not having the
appropriate license or permit. We are unable to verify that our suppliers have
in the past complied, or will in the future comply, with all governmental or
other legal requirements that may be applicable to our sales. We could be fined
or exposed to potentially severe civil or criminal liability, including monetary
fines and injunctions, and we could receive potential negative publicity, if the
applicable governmental regulatory requirements have not been, or are not being,
fully met by our suppliers or by us directly. Negative publicity, fines and
liabilities could also occur if an unqualified person, or even a qualified
customer, lacks the appropriate license or permits to sell, use or ship, or
improperly receives a dangerous or unlicensed product through us. We do not
maintain any reserve for potential liabilities resulting from government
regulation.

     It is also possible that a number of laws and regulations may be adopted or
interpreted in the United States and abroad with particular applicability to the
Internet. These laws and regulations may, for example, cover issues such as user
privacy, freedom of expression, pricing, content and quality of products and
services, taxation, advertising, intellectual property rights, access charges
and information security. The enactment of such laws could have a negative
effect on our business, financial condition and operating results.

                                       35
<PAGE>   46

  We May Not Have Sufficient Cash Flow From Operations To Service Our Debt.

     As of September 30, 2000, we had approximately $23.0 million in long term
debt (including our outstanding 5 1/4% convertible subordinated debentures).
Currently, we are not generating sufficient cash flow from our operations to
satisfy our annual debt service payment obligations. If we are unable to satisfy
our debt service requirements, substantial liquidity problems could result,
which would negatively impact our future prospects.

  We May Require Additional Capital for Our Operations, Which Could Have
  Dilutive and Other Negative Effects on Our Shareholders.

     We currently anticipate that our cash on hand, existing borrowing
arrangements, current investments (including equity interests in other entities)
and other available funds will be sufficient to meet our anticipated needs for
working capital and capital expenditures for at least the next 12 months. We may
need, or find it advantageous, to raise additional funds in the future to fund
our rapid growth, pursue sales and licensing opportunities, develop new or
enhanced products and services, respond to competitive pressures or acquire
complementary businesses, technologies or services.

     If we raise additional funds through the issuance of equity or convertible
debt securities, the percentage ownership of our shareholders will be reduced
and shareholders may experience additional dilution. These securities may also
have powers, preferences and rights that are senior to those of the rights of
our common stock. We cannot be certain that additional financing will be
available on terms favorable to us, if at all. If adequate funds are not
available or not available on acceptable terms, we may be unable to fund our
expansion, promote our brand identity, take advantage of acquisition
opportunities, develop or enhance products or services or respond to competitive
pressures. Any inability to do so could have a negative effect on our business,
financial condition and results of operations.

  Shares Eligible for Future Sale by Our Current or Future Shareholders May
  Cause Our Stock Price to Decline.

     If our shareholders or optionholders sell substantial amounts of our common
stock in the public market, including shares issued in connection with completed
or future acquisitions or upon the exercise of outstanding options and warrants,
then the market price of our common stock could fall.

     As of November 1, 2000, the holders of up to approximately 24,590,020
shares of common stock, warrants to purchase 2,127,038 shares of common stock
and 101,450 shares of Series A preferred stock, which are initially convertible
into approximately 1,167,770 shares of common stock, have demand and/or
piggy-back registration rights. Under the terms of the Series A preferred stock,
we may elect to pay the dividends payable thereunder by issuing shares of Series
A preferred stock or shares of common stock, rather than paying cash dividends.
As of September 30, 2000, cumulative dividends of $3.0 million had been earned
by the holder of our Series A preferred stock, of which $1.5 million were
earned, but not yet paid. The shares of common stock underlying any dividended
shares of Series A preferred stock and any dividended shares of common stock are
also subject to demand and piggyback registration rights. The exercise of such
rights could adversely affect the market price of our common stock.

     We have filed a shelf registration statement to facilitate our acquisition
strategy, as well as registration statements to register shares of common stock
under our stock option and employee stock purchase plans. Shares issued pursuant
to the shelf registration statement, upon exercise of stock options and in
connection with our employee stock purchase plan will be eligible for resale in
the public market without restriction.

     On October 31, 2000, we entered into an agreement with Sumitomo Corporation
under which Sumitomo has agreed to purchase $30.0 million of our common stock,
subject to the receipt of regulatory approval and the fulfillment of customary
closing conditions. We granted Sumitomo limited demand and piggyback
registration rights exercisable after the first anniversary of the closing. The
sale of Sumitomo's shares on the public market could likewise adversely affect
the market price of our common stock.

                                       36
<PAGE>   47

  Anti-Takeover Provisions and Our Right to Issue Preferred Stock Could Make a
  Third-Party Acquisition of Us Difficult.

     VerticalNet is a Pennsylvania corporation. Anti-takeover provisions of
Pennsylvania law could make it more difficult for a third party to acquire
control of us, even if such change in control would be beneficial to our
shareholders. Our articles of incorporation provide that our board of directors
may issue preferred stock without shareholder approval. In addition, our bylaws
provide for a classified board, with each board member serving a staggered
three-year term. The issuance of preferred stock and the existence of a
classified board could make it more difficult for a third party to acquire us.

  Our Common Stock Price Is Likely to Remain Highly Volatile.

     The stock market in general, and the market for stocks of Internet-related
and technology companies in particular, have been highly volatile. The market
price of our common stock has been, and will likely continue to be, similarly
volatile. Investors may not be able to resell their shares of our common stock
following periods of volatility because of the market's adverse reaction to such
volatility. The trading prices of many technology and Internet-related
companies' stocks have reached historical highs within the last 52 weeks and
have reflected relative valuations substantially above historical levels. During
the same period, many of these companies' stocks have also recorded lows well
below their historical highs. Our stock may not trade at the same levels as
other Internet-related or technology stocks, and these stocks in general may not
sustain their current market prices.

     Factors that could cause such volatility may include, among other things:

     - actual or anticipated variations in quarterly operating results;

     - announcements of technological innovations;

     - new sales models or new products or services;

     - changes in financial estimates by securities analysts;

     - conditions or trends in the Internet or business-to-business e-commerce
       industries;

     - changes in the market valuations of other Internet or technology
       companies;

     - failure to meet analysts' or investors' expectations;

     - announcements by us or our competitors of significant acquisitions,
       strategic partnerships or joint ventures;

     - capital commitments;

     - additions or departures of key personnel; and

     - sales of common stock or instruments convertible into common stock.

     Many of these factors are beyond our control. These factors may cause the
market price of our common stock to fall, regardless of our operating
performance.

                                       37
<PAGE>   48

                                 THE COMPANIES

VERTICALNET, INC.
700 Dresher Road
Horsham, Pennsylvania 19044
(215) 328-6100

     VerticalNet, through its wholly owned subsidiaries, provides end-to-end
e-commerce solutions targeted at distinct business segments through three
strategic business units: VerticalNet Markets, VerticalNet Solutions and
VerticalNet Exchanges.

     VerticalNet Markets includes 57 industry-specific digital marketplaces
designed as online vertical trading communities and provides hosted e-commerce
and community capabilities for corporate divisions and small and medium sized
businesses. These vertical trade communities act as industry-specific
comprehensive sources of information, interaction and electronic commerce; they
offer product information, industry news, requests for proposals, directories,
classifieds, job listings, discussion forums, a variety of electronic commerce
opportunities for buyers and sellers and other services, such as online
professional education courses and virtual trade shows. Each vertical trade
community is individually branded, focuses on a single business sector and
caters to individuals with similar professional interests. The vertical trade
communities are designed to attract technical and purchasing professionals with
specialized product requirements and purchasing authority or influence.

     VerticalNet Solutions builds digital marketplaces for industry alliances,
independent Net market makers and global 2000 enterprises. VerticalNet Solutions
offers the VerticalNet(TM) eMarketplace Suite, which is a comprehensive and
innovative open platform solution that includes community, content and market
design tools, multiple market mechanisms and transaction types, multi-party
system interaction and a broad range of buy- and sell-side services. This
eMarketplace Suite is an end-to-end solution that supports auctions, catalogs,
exchanges requests for proposals, requests for quotations and structured
negotiations. VerticalNet Solutions also offers customers a complete set of
professional service offerings, including front-end design, implementation and
integration services and back-end market hosting.

     VerticalNet Exchanges focuses on trading electronic components and hardware
in open and spot markets. Our NECX subsidiary acts as a third-party
intermediary, purchasing electronic components and hardware from various vendors
for resale to foreign and domestic companies. The exchange operates quickly and
anonymously to match buyers' and suppliers' needs, providing a solution to
inventory imbalances that result from overcapacity or shortages within existing
contractual relationships. NECX has overseas sales operations in Sweden,
Ireland, Japan and Korea that serve European and Asian exchange customers.

SIERRACITIES.COM INC.
600 Travis Street, Suite 7050
Houston, Texas 77002
(800) 745-9292

     SierraCities, formerly First Sierra Financial, Inc., is a provider of
e-finance solutions for small businesses. SierraCities offers online end-to-end
business financing fulfillment solutions for specific equipment purchases and
for general corporate purposes. SierraCities acquires, originates, sells and
services equipment leases relating to a wide range of equipment, including
computers and peripherals, software, telecommunications and diagnostic
equipment, as well as other specialized equipment for the healthcare,
automotive, food and hospitality industries. SierraCities funds the acquisition
or origination of its leases from working capital or through its securitized
warehouse facilities. From time to time, depending on market conditions,
SierraCities securitizes the leases in portfolios that meet pre-established
eligibility criteria by packaging them into a pool and selling securities backed
by the leases through public offerings and private placement transactions.

                                       38
<PAGE>   49

     SierraCities acquires and originates leases primarily through its finance
programs. SierraCities is provided protection from credit losses on some
defaulted leases through a first lien security interest in the underlying
equipment, recourse to the source of the lease, which is generally supported by
holdback reserves withheld from amounts paid to the source of the lease upon
purchase of the lease, or a combination of the above. Some of SierraCities'
leases are originated through relationships with equipment vendors and
individual lessees. In addition, SierraCities has in the past generated, and may
in the future generate, income through the acquisition of lease portfolios and
the subsequent sale of such portfolios at a premium.

                                       39
<PAGE>   50

                            BACKGROUND OF THE OFFER

     In October 1999, SierraCities engaged an investment banking firm to explore
a possible sale. From October 1999 through April 2000, that firm contacted
approximately 20 parties. In April 2000, SierraCities terminated the engagement
of that investment bank.

     In April 2000, SierraCities announced that it had retained Donaldson,
Lufkin & Jenrette Securities Corporation, referred to as DLJ, to advise it on
the potential division of the SierraCities' technology and finance operations.
Over the next four months, DLJ contacted approximately 55 parties to determine
their interest in purchasing or investing in the technology or finance
operations or other strategic transactions involving SierraCities. Twenty-seven
of these parties executed confidentiality agreements and were sent confidential
information memoranda. By September 2000, five of these parties had submitted
preliminary indications of interest.

     In August and September 2000, these five parties conducted due diligence
investigations. Three of these parties submitted further proposals, as set forth
below. SierraCities circulated a form of merger agreement for these parties to
review and use as the basis for proposals.

     On September 18, 2000, we submitted a proposal to acquire SierraCities for
$7.00 per share, subject to adjustment based on the amount of cash realized from
the disposition of assets prior to closing. We proposed that the purchase price
would be payable in shares of our common stock and commenced negotiations with
SierraCities regarding a possible merger agreement.

     On October 12, 2000, a third party submitted a proposal to acquire
SierraCities. The proposal contained a price, payable in cash or the third
party's stock, that was lower than $7.00 per share. On October 19, 2000, this
party increased its proposed price, although the revised price was still lower
than $7.00 per share. The parties commenced negotiations regarding a possible
merger agreement.

     On October 19, 2000, the SierraCities board of directors met with its
financial and legal advisors to consider the status of discussions with parties
interested in a combination with SierraCities. The SierraCities board instructed
management and its advisors to continue to seek the most favorable proposal that
may be available.

     On October 20, 2000, we reaffirmed our proposed price of $7.00 per share,
payable in shares of our common stock. The reaffirmed proposal, however, did not
provide for a price adjustment mechanism, although it was conditioned on
SierraCities' realizing specified financial and operational milestones by the
closing of the transaction.

     On October 23, 2000, another third party submitted a proposal to acquire
SierraCities. The proposal contained a price, payable in the third party's
stock, that was lower than $7.00 per share.

     On October 30, 2000, the SierraCities board met to consider the three
proposals. SierraCities management and representatives of DLJ and Dewey
Ballantine LLP discussed the three proposals with the SierraCities board. At the
direction of the SierraCities board, DLJ contacted the three parties to inform
them that they were in a competitive situation and ask them to improve the terms
of their proposals. We continued negotiations with SierraCities and were told
that our proposal was the only one of the three which was conditioned upon
achieving specified financial and operational milestones. We agreed to drop our
condition that SierraCities realize specified pre-closing financial and
operational milestones in exchange for SierraCities' agreement to use its
reasonable best efforts to undertake certain actions designed to achieve such
financial and operational milestones. Neither of the other parties improved the
terms of its proposal.

     On November 5, 2000, the SierraCities board met to consider the merger
agreement and related agreements being negotiated with us. Following a
discussion of the issues and presentations by its financial and legal advisors,
the SierraCities board voted to approve the merger agreement and related
agreements by the unanimous vote of directors present, subject to the resolution
of open issues. On the same day, our

                                       40
<PAGE>   51

board of directors held a telephonic board meeting with its financial and legal
advisors and management, and discussed the terms and conditions of the offer and
the merger as set forth in the merger agreement and related agreements. Our
board of directors approved the merger agreement and the related transactions,
including the offer and the merger, by the unanimous vote of the directors
present.

     We and SierraCities completed negotiation of the proposed combination and
executed the merger agreement and related agreements following the close of
business on November 6, 2000. Shortly thereafter, we and SierraCities issued a
press release announcing the proposed combination.

     We plan to commence the offer as soon as possible following the filing of
the registration statement of which this prospectus forms a part.

                                       41
<PAGE>   52

                                   THE OFFER

BASIC TERMS

     EXCHANGE OF SHARES; EXCHANGE RATIO.  Through Truckee, we are offering to
exchange a fraction of a share of our common stock based on an exchange ratio,
described below, for each outstanding share of SierraCities common stock that is
validly tendered and not properly withdrawn. If the average of the closing
prices per share of our common stock on Nasdaq for each of the ten consecutive
trading days ending on the trading day that is two days prior to the date on
which we accept the shares tendered in the offer, which we refer to as the
VerticalNet average trading price, is (1) less than $21.00, the SierraCities
stockholders shall receive .3333 of a VerticalNet share for each SierraCities
share, (2) at least $21.00 but less than or equal to $35.00, SierraCities
stockholders shall receive a fraction of a VerticalNet share equal to $7.00
divided by the VerticalNet average trading price for each SierraCities share,
(3) more than $35.00 but less than or equal to $51.00, the SierraCities
stockholders shall receive .20 of a VerticalNet share for each SierraCities
share and (4) more than $51.00, SierraCities stockholders shall receive a
fraction of a VerticalNet share equal to $10.20 divided by the VerticalNet
average trading price for each SierraCities share. SierraCities has the right to
terminate the merger agreement if the VerticalNet average trading price is less
than $15.00. The VerticalNet average trading price cannot be determined at this
time.

     ILLUSTRATIVE TABLE OF EXCHANGE RATIOS AND VALUE OF OFFER/MERGER
CONSIDERATION.  The columns in the following table present:

     - illustrative values of the exchange ratios that would result if the
       VerticalNet average trading price were within a range of $10.00 to $60.00
       per share;

     - the fraction of a share of our common stock that would be issued for one
       share of SierraCities common stock at each of the VerticalNet average
       trading prices presented in the table; and

     - the illustrative values of the approximate consideration that would be
       issued in connection with the offer and the merger for one SierraCities
       common share, which illustrative values are determined by multiplying
       each of the VerticalNet average trading prices presented in the table by
       the corresponding exchange ratio.

                      VALUE OF OFFER/MERGER CONSIDERATION

<TABLE>
<CAPTION>
                                                                                 APPROXIMATE
                   VERTICALNET AVERAGE                     EXCHANGE        CONSIDERATION VALUE PER
                      TRADING PRICE                         RATIO            SIERRACITIES SHARE
                   -------------------                     --------    -------------------------------
                                                                       (ROUNDED TO NEAREST WHOLE CENT)
                                                                       -------------------------------
<S>                                                        <C>         <C>
$10.00*..................................................    .3333                 $ 3.33
$15.00*..................................................    .3333                 $ 5.00
$20.00...................................................    .3333                 $ 6.67
$21.00...................................................    .3333                 $ 7.00
$25.00...................................................    .2800                 $ 7.00
$30.00...................................................    .2333                 $ 7.00
$35.00...................................................    .2000                 $ 7.00
$40.00...................................................    .2000                 $ 8.00
$45.00...................................................    .2000                 $ 9.00
$50.00...................................................    .2000                 $10.00
$51.00...................................................    .2000                 $10.20
$55.00...................................................    .1855                 $10.20
$60.00...................................................    .1700                 $10.20
</TABLE>

---------------
* SierraCities has the right to terminate the merger agreement if the
  VerticalNet average trading price is less than $15.00.
                                       42
<PAGE>   53

     THE VALUES OF OUR COMMON SHARES IN THE TABLE ABOVE ARE ILLUSTRATIVE ONLY
AND DO NOT REPRESENT THE ACTUAL AMOUNTS PER SIERRACITIES COMMON SHARE THAT MIGHT
BE REALIZED BY ANY SIERRACITIES STOCKHOLDER ON OR AFTER CONSUMMATION OF THE
OFFER OR THE MERGER. THE AMOUNT ANY SIERRACITIES STOCKHOLDER MIGHT REALIZE UPON
SALE IN THE MARKET OF OUR COMMON SHARES RECEIVED BY THE STOCKHOLDER IN THE OFFER
OR THE MERGER WILL DEPEND UPON THE MARKET PRICE PER SHARE OF OUR COMMON SHARES
AT THE TIME OF SALE, WHICH WILL FLUCTUATE DEPENDING UPON ANY NUMBER OF REASONS,
INCLUDING THOSE SPECIFIC TO US AND THOSE THAT INFLUENCE THE TRADING PRICES OF
EQUITY SECURITIES GENERALLY.

     FLUCTUATIONS IN MARKET PRICE.  Because the VerticalNet average trading
price is an average of closing prices, it might be different from the actual
market value of a share of our common stock on the date we issue shares to the
SierraCities stockholders. The market value of our shares that you will receive
in exchange for each share of SierraCities might actually be less than the
dollar amount indicated in the above table on the date we issue shares to you.
In addition, prior to the consummation of the offer, the fraction of a share of
our common stock you will receive for each share of SierraCities common stock
will change as the trading price of our common stock changes.

     MORE INFORMATION ABOUT THE FINAL EXCHANGE RATIO.  We will notify you by
issuing a press release announcing the final exchange ratio and filing that
press release with the SEC. SierraCities stockholders can call our information
agent, D.F. King & Co., Inc., at any time toll free at (800) 628-8510 to request
information about the VerticalNet average trading price, including the final
exchange ratio for the offer, once determined.

     TRANSFER CHARGES.  If you tender your shares, you will not be obligated to
pay any charges or expenses of the exchange agent. If you own your shares
through a broker or other nominee, and your broker exchanges the shares on your
behalf, your broker may charge you a fee for doing so. You should consult your
broker or nominee to determine whether any charges will apply.

     MERGER.  We are making this offer in order to acquire at least two thirds
of the common equity interest in SierraCities. We intend, as soon as possible
after consummation of the offer, to seek to have SierraCities and Truckee
consummate the merger. At the effective time of the merger, each share of
SierraCities common stock, except for shares held by SierraCities, us, Truckee
or, if applicable, stockholders exercising appraisal rights, will be converted
into the right to receive the same fraction of one of our shares per
SierraCities share as is paid in the offer, subject to any applicable appraisal
rights that may be available under Delaware law. If we obtain all of the shares
of SierraCities pursuant to the offer and the merger, and if the VerticalNet
average trading price is $51.00 or less, former stockholders of SierraCities
will most likely own between 4% and 7% of the shares of our common stock, based
upon the respective number of shares we and SierraCities had outstanding on
November 6, 2000. The exact percentage of our shares that former SierraCities
stockholders will hold is dependent on the final exchange ratio, which is not
known at this time.

     STOCKHOLDERS LIST.  We have relied on SierraCities' stockholders list and
security position listings to communicate with you and to distribute the offer
to you. We may send this prospectus, related letter of transmittal and other
relevant materials to you and to brokers, dealers, commercial banks, trust
companies and similar persons whose names, or the names of whose nominees,
appear on SierraCities' stockholders list or, if applicable, who are listed as
participants in a clearing agency's security position listing.

TIMING OF THE OFFER

     The offer is currently scheduled to expire at midnight, New York City time,
on December 14, 2000.

EXTENSION, TERMINATION AND AMENDMENT

     If the conditions to the offer are not satisfied or waived on any scheduled
expiration date of the offer and the conditions could reasonably be expected to
be satisfied, we will extend the offer from time to time

                                       43
<PAGE>   54

for such amount of time as is reasonably necessary to permit such conditions to
be satisfied or waived, provided that no single extension shall exceed ten
business days without the prior written consent of SierraCities. We also reserve
the right, in our sole discretion, subject to the provisions of the merger
agreement, at any time or from time to time, (a) to extend the offer for any
period required by any rule or regulation of the SEC applicable to the offer and
(b) if more than 80% but less than 90% of the outstanding shares shall have been
validly tendered pursuant to the offer as of the scheduled or extended
expiration date, to extend the offer for an aggregate period of not more than
five business days beyond the latest expiration date that would otherwise be
permitted under clause (a) of this sentence.

     If we extend our offer, we will make an announcement to that effect no
later than 9:00 a.m., New York City time, on the next business day after the
previously scheduled expiration date. During any such extension, all
SierraCities shares previously tendered and not properly withdrawn will remain
subject to the offer, subject to your right to withdraw your SierraCities
shares. You should read the discussion below under the caption "-- Withdrawal
Rights" for more details.

     We reserve the right to increase the exchange ratio or to make any other
changes in the terms and conditions of the offers by giving oral or written
notice of such change to the exchange agent and by making a public announcement,
provided that, without the prior written consent of SierraCities, we cannot (a)
amend or waive the minimum tender condition or (b) change the form of
consideration to be paid, decrease the price per share or the number of shares
sought in the offer, impose conditions to the offer in addition to those set
forth in the merger agreement, extend the expiration date of the offer beyond
the initial expiration date of the offer (except as provided above) or make any
other change that is adverse to the holders of the shares.

     Subject to applicable law (including Rules 14d-4(d) and 14d-6(c) under the
Exchange Act, which require that any material change in the information
published, sent or given to stockholders in connection with the offer be
promptly sent to stockholders in a manner reasonably designed to inform
stockholders of such change) and without limiting the manner in which we may
choose to make any public announcement, we assume no obligation to publish,
advertise or otherwise communicate any such public announcement other than by
making a release to Business Wire.

     If we make a material change in the terms of the offer or the information
concerning the offer, or if we waive a material condition of the offer, we will
extend the offer to the extent required under the Exchange Act. If, prior to the
expiration date, we change the percentage of SierraCities shares being sought or
the consideration offered to you, that change will apply to all holders whose
SierraCities shares are accepted for exchange pursuant to the offer. If, at the
time notice of that change is first published, sent or given to you, the offer
is scheduled to expire at any time earlier than the tenth business day from and
including the date that such notice is first so published, sent or given, we
will extend the offer until the expiration of that ten business-day period. For
purposes of the offer, a "business day" means any day other than a Saturday,
Sunday or federal holiday and consists of the time period from 12:01 a.m.
through 12:00 midnight, New York City time.

EXCHANGE OF SIERRACITIES SHARES; DELIVERY OF OUR COMMON STOCK

     Upon the terms and subject to the conditions of the offer, including, if
the offer is extended or amended, the terms and conditions of any such extension
or amendment, we will accept, and will exchange, SierraCities shares validly
tendered and not withdrawn as promptly as practicable after the expiration date
and promptly after they are tendered during any subsequent offering period. In
addition, subject to applicable rules of the SEC and the terms of the merger
agreement, we expressly reserve the right to delay acceptance for exchange or
exchange of SierraCities shares in order to comply with any

                                       44
<PAGE>   55

applicable law. In all cases, exchange of SierraCities shares tendered and
accepted for exchange pursuant to the offer will be made only after timely
receipt by the exchange agent of:

     - certificates for those SierraCities shares or a confirmation of a
       book-entry transfer of those SierraCities shares in the exchange agent's
       account at the Depository Trust Company, which we refer to as DTC;

     - a properly completed and duly executed letter of transmittal (or a
       facsimile of that document) or agent's message if applicable; and

     - any other required documents.

     You should read the information under the caption "The Offer -- Procedure
for Tendering" for more details on tendering your shares.

     For purposes of the offer, we will be deemed to have accepted for exchange
SierraCities shares validly tendered and not withdrawn as, if and when we notify
the exchange agent of our acceptance for exchange of SierraCities shares
tendered pursuant to the offer. The exchange agent will deliver our common stock
in exchange for SierraCities shares pursuant to the offer as soon as practicable
after receipt of such notice. The exchange agent will act as agent for tendering
stockholders for the purpose of receiving our common stock from us and
transmitting such stock to you. The exchange agent will also act as agent for
the tendering stockholders for the purpose of aggregating and selling the
fractional shares which would otherwise be issued and distributing the proceeds
pro rata to those former stockholders.

     If we do not accept any tendered SierraCities shares pursuant to the terms
and conditions of the offer for any reason, or if certificates are submitted for
more SierraCities shares than are tendered, we will return certificates for such
tendered SierraCities shares or untendered SierraCities shares, as the case may
be, without expense to the tendering stockholder. In the case of SierraCities
shares tendered by book-entry transfer of such SierraCities shares into the
exchange agent's account at DTC pursuant to the procedures set forth below under
the discussion entitled "-- Procedure for Tendering" are not accepted for
transfer, those SierraCities shares will be credited to an account maintained
within DTC as soon as practicable following expiration or termination of the
offer.

     If we increase the consideration offered to SierraCities stockholders in
the offer prior to the expiration date, such increased consideration will be
given to all stockholders whose SierraCities shares are tendered pursuant to the
offer, whether or not such SierraCities shares were tendered or accepted for
exchange prior to the increase in consideration.

CASH INSTEAD OF FRACTIONAL SHARES OF OUR COMMON STOCK

     We will not issue certificates representing fractional shares of our common
stock pursuant to the offer or the subsequent merger. Instead, the exchange
agent will aggregate and sell the fractional shares which would otherwise be
issued and distribute the proceeds to the tendering stockholders pro rata based
on the fraction of a share attributed to each such stockholder. You will not
receive any interest on the cash to be given for fractional shares, even if
there is a delay in making the exchange and payment.

WITHDRAWAL RIGHTS

     Your tender of SierraCities shares pursuant to the offer is irrevocable,
except that, other than during a subsequent offering period, SierraCities shares
tendered pursuant to the offer may be withdrawn at any time prior to the
expiration date. If we elect to provide a subsequent offering period, you will
not have the right to withdraw SierraCities shares that you tender in the
subsequent offering period.

     For your withdrawal to be effective, the exchange agent must receive from
you a written or facsimile transmission notice of withdrawal at its address set
forth on the back cover of this prospectus, and your

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<PAGE>   56

notice must include your name, address, social security number, the certificate
number(s), the number of SierraCities shares to be withdrawn and the name of the
registered holder, if different from you.

     A financial institution must guarantee all signatures on the notice of
withdrawal. Most banks, savings and loan associations and brokerage houses are
able to effect these signature guarantees for you. The financial institution
must be a participant in the Securities Transfer Agents Medallion Program, the
New York Stock Exchange, Inc. Medallion Signature Program or the Stock Exchange
Medallion Program, any of which are an "eligible institution," unless those
SierraCities shares have been tendered for the account of any eligible
institution. If SierraCities shares have been tendered pursuant to the
procedures for book-entry exchange discussed under the caption entitled
"-- Procedure for Tendering," any notice of withdrawal must specify the name and
number of the account at DTC to be credited with the withdrawn SierraCities
shares and must otherwise comply with DTC's procedures. If certificates have
been delivered or otherwise identified to the exchange agent, the name of the
registered holder and the serial numbers of the particular certificates
evidencing the SierraCities shares withdrawn must also be furnished to the
exchange agent, as stated above, prior to the physical release of such
certificates. We, working in conjunction with the exchange agent, will decide
all questions as to the form and validity (including time of receipt) of any
notice of withdrawal, in our sole discretion, and our decision shall be final
and binding. Neither we, the exchange agent, the information agent nor any other
person will be under any duty to give notification of any defects or
irregularities in any notice of withdrawal or will incur any liability for
failure to give any such notification. Any SierraCities shares properly
withdrawn will be deemed not to have been validly tendered for purposes of the
offer. However, you may retender withdrawn SierraCities shares by following one
of the procedures discussed under the captions entitled "-- Procedure for
Tendering" or "-- Guaranteed Delivery" at any time prior to the expiration date.

PROCEDURE FOR TENDERING

     For you to validly tender SierraCities shares pursuant to the offer, (a)
the enclosed letter of transmittal, properly completed and duly executed (or a
manually executed facsimile of that document), along with any required
signatures, guarantees, or an agent's message in connection with a book-entry
transfer, and any other required documents, must be transmitted to and received
by the exchange agent at its address set forth on the back cover of this
prospectus, and certificates for SierraCities shares tendered must be received
by the exchange agent at such address or those SierraCities shares must be
tendered pursuant to the procedures for book-entry exchange set forth below and
a confirmation of receipt of such tender received, which confirmation we refer
to below as a "book-entry confirmation," in each case before the expiration
date, or (b) you must comply with the guaranteed delivery procedures set forth
below.

     The term "agent's message" means a message, transmitted by DTC to, and
received by, the exchange agent and forming a part of a book-entry confirmation,
which states that DTC has received an express acknowledgment from the
participant in DTC exchanging the SierraCities shares which are the subject of
such book-entry confirmation, that such participant has received and agrees to
be bound by the terms of the letter of transmittal and that we may enforce that
agreement against such participant.

     The exchange agent will establish accounts with respect to the SierraCities
shares at DTC for purposes of the offer and any financial institution that is a
participant in DTC may make book-entry delivery of the SierraCities shares by
causing DTC to transfer such SierraCities shares into the exchange agent's
account in accordance with DTC's procedure for such transfer. However, although
delivery of SierraCities shares may be effected through book-entry at DTC, the
letter of transmittal (or facsimile thereof), with any required signature
guarantees, or an agent's message in connection with a book-entry transfer, and
any other required documents, must, in any case, be transmitted to and received
by the exchange agent at its address set forth on the back cover of this
prospectus prior to the expiration date, or the guaranteed delivery procedures
described below.

     Signatures on all letters of transmittal must be guaranteed by an eligible
institution, except in cases in which SierraCities shares are tendered either by
a registered holder of SierraCities shares who has not

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<PAGE>   57

completed the box entitled "Special Issuance Instructions" or the box entitled
"Special Delivery Instructions" on the letter of transmittal or for the account
of an eligible institution.

     If the certificates for SierraCities shares are registered in the name of a
person other than the person who signs the letter of transmittal, or if
certificates for untendered SierraCities shares are to be issued to a person
other than the registered holder(s), the certificates must be endorsed or
accompanied by appropriate stock powers, in either case signed exactly as the
name or names of the registered owner or owners appear on the certificates, with
the signature(s) on the certificates or stock powers guaranteed in the manner we
have described above.

     The method of delivery of SierraCities share certificates and all other
required documents, including delivery through DTC, is at your option and risk,
and the delivery will be deemed made only when actually received by the exchange
agent. If delivery is by mail, we recommend that stockholders use an overnight
or hand delivery service. In all cases, you should allow sufficient time to
ensure timely delivery.

     TO PREVENT BACKUP FEDERAL INCOME TAX WITHHOLDING WITH RESPECT TO CASH, IF
ANY, RECEIVED PURSUANT TO THE OFFER, YOU MUST PROVIDE THE EXCHANGE AGENT WITH
YOUR CORRECT TAXPAYER IDENTIFICATION NUMBER AND CERTIFY WHETHER YOU ARE SUBJECT
TO BACKUP WITHHOLDING OF FEDERAL INCOME TAX BY COMPLETING THE SUBSTITUTE FORM
W-9 INCLUDED IN THE LETTER OF TRANSMITTAL. SOME STOCKHOLDERS (INCLUDING, AMONG
OTHERS, ALL CORPORATIONS AND SOME FOREIGN INDIVIDUALS) ARE NOT SUBJECT TO THESE
BACKUP WITHHOLDING AND REPORTING REQUIREMENTS. IN ORDER FOR A FOREIGN INDIVIDUAL
TO QUALIFY AS AN EXEMPT RECIPIENT, THE STOCKHOLDER MUST SUBMIT A FORM W-8,
SIGNED UNDER PENALTIES OF PERJURY, ATTESTING TO THAT INDIVIDUAL'S EXEMPT STATUS.

     EACH SIERRACITIES STOCKHOLDER THAT RECEIVES OUR COMMON SHARES IN THE OFFER
AND/OR THE MERGER SHOULD FILE A STATEMENT WITH HIS, HER OR ITS FEDERAL INCOME
TAX RETURN SETTING FORTH THE STOCKHOLDER'S BASIS IN THE SIERRACITIES SHARES
SURRENDERED AND THE FAIR MARKET VALUE OF THE OUR COMMON SHARES AND THE PROCEEDS
FROM THE SALE OF FRACTIONAL SHARES RECEIVED IN THE OFFER AND THE MERGER, AND
SHOULD RETAIN PERMANENT RECORDS OF THESE FACTS RELATING TO THE OFFER AND THE
MERGER.

GUARANTEED DELIVERY

     If you wish to tender SierraCities shares pursuant to the offer and your
certificates are not immediately available or you cannot deliver the
certificates and all other required documents to the exchange agent prior to the
expiration date or cannot complete the procedure for book-entry transfer on a
timely basis, your SierraCities shares may nevertheless be tendered, so long as
all of the following conditions are satisfied:

        - you make your tender by or through an eligible institution;

        - the enclosed notice of guaranteed delivery, properly completed and
          duly executed, substantially in the form enclosed with this
          prospectus, or an agent's message with respect to a guaranteed
          delivery that is accepted by Truckee, is received by the exchange
          agent as provided below on or prior to the expiration date; and

        - the certificates for all SierraCities shares to be tendered (or a
          confirmation of a book-entry transfer of such securities into the
          exchange agent's account at DTC as described above), in proper form
          for transfer, together with a properly completed and duly executed
          letter of transmittal (or facsimile thereof), with any required
          signature guarantees (or, in the case of a book-entry transfer, an
          agent's message) and all other documents required by the letter of
          transmittal, or a properly transmitted agent's message, are received
          by the exchange agent within three Nasdaq trading days after the date
          of execution of such notice of guaranteed delivery.

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<PAGE>   58

     You may deliver the notice of guaranteed delivery by hand or transmit it by
facsimile transmission or mail it to the exchange agent and you must include a
signature guarantee by an eligible institution in the form set forth in that
notice.

     By executing a letter of transmittal as set forth above, you irrevocably
appoint our designees as your attorneys-in-fact and proxies, each with full
power of substitution, to the full extent of your rights with respect to your
SierraCities shares tendered and accepted for exchange by us and with respect to
any and all other SierraCities shares and other securities issued or issuable in
respect of the SierraCities shares on or after November 16, 2000. That
appointment is effective, and voting rights will be affected, when and only to
the extent that we deposit with the exchange agent the shares of our common
stock for SierraCities shares that you have tendered. All such proxies shall be
considered coupled with an interest in the tendered SierraCities shares and
therefore shall not be revocable. Upon the effectiveness of such appointment,
all prior proxies that you have given will be revoked, and you may not give any
subsequent proxies and, if given, they will not be deemed effective. Our
designees will, with respect to the SierraCities shares for which the
appointment is effective, be empowered, among other things, to exercise all of
your voting and other rights as they, in their sole discretion, deem proper at
any annual, special or adjourned meeting of SierraCities' stockholders or
otherwise. We reserve the right to require that, in order for SierraCities
shares to be deemed validly tendered, immediately upon our acceptance for
exchange of those SierraCities shares, we must be able to exercise full voting
rights with respect to such SierraCities shares.

     We will determine questions as to the validity, form, eligibility, time of
receipt and acceptance for exchange of any tender of SierraCities shares, in our
sole discretion, and our determination shall be final and binding. We reserve
the absolute right to reject any and all tenders of SierraCities shares that we
determine are not in proper form or the acceptance for exchange of or exchange
for which may, in the opinion of our counsel, be unlawful. We also reserve the
absolute right to waive any of the conditions of the offer, other than the
minimum tender condition, or any defect or irregularity in the tender of any
SierraCities shares. No tender of SierraCities shares will be deemed to have
been validly made until all defects and irregularities in tenders of
SierraCities shares have been cured or waived. Neither we, the exchange agent,
the information agent nor any other person will be under any duty to give
notification of any defects or irregularities in the tender of any SierraCities
shares or will incur any liability for failure to give any such notification.
Our interpretation of the terms and conditions of the offer, including the
letter of transmittal and instructions thereto, will be final and binding.

     The tender of SierraCities shares pursuant to any of the procedures
described above will constitute a binding agreement between us and you upon the
terms and subject to the conditions of the offer.

PURPOSE OF THE OFFER; THE MERGER; APPRAISAL RIGHTS

     Purpose.  We are making the offer in order to acquire control of at least
two thirds of the common equity interest in SierraCities. The offer is the first
step in our acquisition of SierraCities and is intended to facilitate the
acquisition of all SierraCities shares. You will not have appraisal rights as a
result of consummation of the offer. We intend, as soon as practicable after
consummation of the offer, to seek to merge Truckee, our wholly owned
subsidiary, with SierraCities. The purpose of the merger is to acquire all
SierraCities shares not tendered and exchanged pursuant to the offer. At the
effective time of the merger, each share of SierraCities common stock, except
for shares held by SierraCities, us, Truckee or, if applicable, stockholders
exercising appraisal rights will be converted into the right to receive the same
fraction of a share of our common stock per SierraCities share as was paid in
the offer, subject to appraisal rights that may be available under Delaware law.
Assuming satisfaction or waiver of the conditions to the merger, we are
obligated to consummate the merger as promptly as practicable.

     Approval of the Merger.  Under SierraCities' certificate of incorporation,
the approval of the board of directors and the affirmative vote of the holders
of two thirds of its outstanding shares are required to approve and adopt a
merger and a merger agreement. The SierraCities board of directors has
previously approved the merger. Accordingly, if we complete the offer, and the
minimum tender condition is satisfied,

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<PAGE>   59

we would have a sufficient number of SierraCities shares to approve the merger
without the affirmative vote of any other holder of SierraCities shares.
Therefore, unless the merger is consummated in accordance with the short form
merger provisions under Delaware law described below, in which case no action by
the stockholders of SierraCities will be required to consummate the merger, the
only remaining corporate action of SierraCities will be the approval and
adoption of the merger agreement by the affirmative vote of two thirds of the
outstanding SierraCities shares.

     Possible Short Form Merger.  Section 253 of the Delaware General
Corporation Law would permit the merger to occur without a vote of SierraCities
stockholders (a "short form merger") if we were to acquire at least 90% of the
outstanding SierraCities shares in the offer or otherwise (including as a result
of purchases by us during any subsequent offering period). If, however, we do
not acquire at least 90% of the then outstanding SierraCities shares pursuant to
the offer or otherwise, and a vote of SierraCities' stockholders is required
under Delaware law, a longer period of time will be required to effect the
merger.

     Appraisal Rights.  SierraCities stockholders do not have appraisal rights
in connection with the offer.

     If more than two thirds but less than 90% of the outstanding SierraCities
shares are validly tendered and not properly withdrawn in the offer, we will
effect a long form merger, as described above, as permitted under Section 251 of
the Delaware General Corporation Law. SierraCities stockholders who have not
exchanged their SierraCities shares in the offer will not have appraisal rights
in connection with a long form merger.

     However, if at least 90% of the outstanding SierraCities shares are validly
tendered and not properly withdrawn in the offer, we will effect a short form
merger, as described above, as permitted under Section 253 of the Delaware
General Corporation Law. SierraCities stockholders at the time of a short form
merger will have the right, under Section 262 of the Delaware General
Corporation Law, to dissent and demand appraisal of their SierraCities shares.
Under Section 262, dissenting stockholders who comply with the applicable
statutory procedures will be entitled to receive a judicial determination of the
fair value of their SierraCities shares, exclusive of any element of value
arising from the accomplishment or expectation of the merger and to receive
payment of such fair value in cash, together with a fair rate of interest, if
any. In Cede & Co. and Cinerama, Inc. v. Technicolor, Inc., the Supreme Court of
the State of Delaware construed Section 262 of the Delaware General Corporation
Law, and held that the "accomplishment or expectation" exclusion from the
calculation of fair value set forth in the preceding sentence is narrow and is
designed to eliminate use of pro forma data and projections of a speculative
variety relating to the completion of a merger. The court held that it is
appropriate to include in the calculation of fair value any known elements of
value. We cannot assure you as to the methodology a court would use to determine
fair value or how a court would select which of the elements of value are to be
included in such a determination.

CONDITIONS OF THE OFFER

     The offer is subject to a number of conditions, including those described
below:

  Minimum Tender Condition

     There must be validly tendered, and not withdrawn prior to the expiration
of the offer, a number of SierraCities shares which will constitute at least two
thirds of the total number of outstanding SierraCities shares on a fully diluted
basis (as though all options or other securities convertible into or exercisable
or exchangeable for SierraCities shares had been so converted, exercised or
exchanged) as of the date that we accept the SierraCities shares pursuant to the
offer. We call this the "minimum tender condition." Based on information
supplied by SierraCities, the number of shares needed to satisfy the minimum
tender condition would have been 12,699,093 as of November 6, 2000.

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<PAGE>   60

  Antitrust Condition

     The waiting period, and any extension thereof, applicable to the offer and
the merger under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as
amended, which we refer to as the "HSR Act," and any other applicable antitrust
law must have expired or been terminated. We call this the "antitrust
condition."

  Registration Statement Effectiveness Condition

     The registration statement on Form S-4 of which this prospectus is a part
must have become effective under the Securities Act and not be the subject of
any stop order or proceedings seeking a stop order. We call this the
"registration statement effectiveness condition."

  Other Conditions of the Offer

     The offer is also subject to the conditions that, at the time of acceptance
for exchange of SierraCities shares pursuant to the offer:

     - there shall not have been any action taken, or judgment entered, or
       similar barrier imposed, by any court or other governmental entity that
       directly or indirectly (a) prohibits, or makes illegal, the acceptance
       for payment of or payment for SierraCities shares or the consummation of
       the offer or the merger, (b) renders Truckee unable to accept for
       payment, or pay for, some or all of the SierraCities shares, (c) imposes
       material limitations on our ability to effectively exercise full rights
       of ownership of the SierraCities shares, including the right to vote the
       SierraCities shares purchased by it on all matters properly presented to
       SierraCities' stockholders, (d) prohibits or imposes any material
       limitations on our direct or indirect ownership or operation of all or a
       material portion of our business or assets or SierraCities' business or
       assets, (e) compels us to dispose of or hold separate any material
       portion of our business or assets or the business or assets of
       SierraCities, (f) obliges SierraCities or us to pay material damages in
       connection with the transactions contemplated by the merger agreement or
       (g) otherwise constitutes a material adverse effect on SierraCities or,
       as a result of the transactions contemplated by the merger agreement, us.

     - SierraCities shall not have breached or failed to perform in any material
       respect its covenants and obligations under the merger agreement, which
       failure to perform is not cured within ten business days after giving of
       written notice to SierraCities;

     - the representations and warranties of SierraCities contained in the
       merger agreement shall have been true and correct both when made and as
       of the expiration of the offer as if made on and as of that time, other
       than representations or warranties that address matters only as of a
       certain date, which shall be true and correct as of that date, except for
       such failures to be true and correct, without giving effect to any
       materiality qualifiers, as would not reasonably be expected to have,
       individually or in the aggregate, a material adverse effect on
       SierraCities;

     - the board of directors of SierraCities shall not have publicly withdrawn
       or modified or changed in a manner adverse to us, including by amendment
       of the Schedule 14D-9 filed by SierraCities, its recommendation of the
       offer, the merger, the merger agreement, and the board of directors of
       SierraCities, shall not have publicly recommended to the stockholders of
       SierraCities any alternative acquisition proposal or resolved to do so or
       publicly announced an intention to do so;

     - the merger agreement shall not have been terminated in accordance with
       its terms;

     - no person or group, as defined in Exchange Act Section 13(d)(3), other
       than us or any of our subsidiaries, shall have become the beneficial
       owner, as defined in Exchange Act Rule 13d-3, of 20% or more of the
       outstanding shares of common stock of SierraCities;

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<PAGE>   61

     - there shall not have occurred since September 30, 2000 any events,
       occurrences, states or actions that, individually or in the aggregate,
       have had or are reasonably likely to have, a material adverse effect on
       SierraCities; and

     - SierraCities shall have executed the waiver agreement contemplated in the
       merger agreement in order to remove some of its lease portfolio assets
       from its consolidated balance sheet, the execution of which will not
       involve transactions with any third parties.

     The conditions of the offer described above are solely for our benefit and
we may assert them regardless of the circumstances giving rise to any such
conditions, including any action or inaction by us. We may waive these
conditions in whole or in part. The determination as to whether any condition
has been satisfied shall be in our good faith judgment and will be final and
binding on all parties. The failure by us at any time to exercise any of the
foregoing rights shall not be deemed a waiver of any such right and each such
right shall be deemed a continuing right which may be asserted at any time and
from time to time. Notwithstanding the fact that we reserve the right to assert
the failure of a condition in order to delay exchange or cancel our obligation
to exchange properly tendered SierraCities shares, we will either promptly
exchange or return such SierraCities shares.

     The merger agreement provides that we may not purchase shares in the offer,
unless as of the date of the expiration of the offer, we and SierraCities shall
have been advised by Cooley Godward LLP and Dewey Ballantine LLP, respectively,
that it is their opinion that, although the matter is not free from doubt, for
U.S. federal income tax purposes the offer and the merger will constitute a
reorganization. See "Material Federal Income Tax Consequences."

REGULATORY APPROVALS

     We and SierraCities have agreed in the merger agreement to use all
reasonable efforts to take whatever actions are required to obtain necessary
regulatory approvals with respect to the offer and the merger. Other than
clearance under the antitrust laws applicable to the offer and the merger which
are described above under "-- Conditions of the Offer -- Antitrust Condition,"
the SEC's declaring the effectiveness of the registration statement of which
this prospectus is a part and the filing of a certificate of merger under
Delaware corporate law with respect to the merger, we do not believe that any
additional material governmental filings are required with respect to the offer
and the merger.

     Under the HSR Act and the related rules, neither the offer nor the merger
may be completed until we and SierraCities notify and furnish information to the
Federal Trade Commission, or FTC, and the Antitrust Division of the United
States Department of Justice and specified waiting period requirements have been
satisfied. In connection with the merger, on November 14, 2000, we filed with
the FTC and the Antitrust Division the required notification and report forms
under the HSR Act. SierraCities shall file its required notification and report
forms under the HSR Act as promptly as possible after November 14, 2000. The
applicable waiting period under the HSR Act relating to the merger is scheduled
to expire at midnight on December 14, 2000 unless it is earlier terminated or
extended by a request for additional information.

     At any time before or after the completion of the merger, either the
Antitrust Division or the FTC could take any action under U.S. antitrust laws as
it deems necessary or desirable in the public interest, including seeking to
enjoin the completion of the merger or seeking the divestiture of substantial
assets owned by us or SierraCities. Private parties and state attorneys general
may also bring actions under U.S. antitrust laws depending on the circumstances.
Although we believe that the merger does not raise serious concerns under U.S.
antitrust laws, we can give no assurance that a challenge to the merger on
antitrust grounds will not be made or, if this challenge is made, that it would
not be successful.

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<PAGE>   62

EFFECTS OF OFFER

  Reduced Liquidity; Possible Delisting

     According to SierraCities, there were, as of November 6, 2000, 19,048,640
SierraCities common shares outstanding. The tender of SierraCities shares
pursuant to the offer will reduce the number of holders of SierraCities shares
and the number of SierraCities shares that might otherwise trade publicly and
could adversely affect the liquidity and market value of the remaining
SierraCities shares held by the public. SierraCities shares are listed and
principally traded on the Nasdaq National Market. Depending on the number of
SierraCities shares acquired pursuant to the offer, following consummation of
the offer, SierraCities shares may no longer meet the requirements of Nasdaq for
continued listing.

     The NASD's requirements for continued inclusion in the Nasdaq National
Market, among other things, require that an issuer have either:

     - at least 750,000 publicly held shares, held by at least 400 stockholders
       of round lots, with a market value of at least $5.0 million and net
       tangible assets of at least $4.0 million and at least two registered and
       active market makers for the shares; or

     - at least 1,100,000 publicly held shares, held by at least 400
       stockholders of round lots, with a market value of at least $15.0 million
       and at least four registered and active market markers, and either:

        - a market capitalization of at least $50.0 million; or

        - total assets and total revenue of at least $50.0 million each for the
          most recently completed fiscal year or two of the last three most
          recently completed fiscal years.

     The shares might nevertheless continue to be included in the Nasdaq
National Market with quotations published in the Nasdaq "additional list" or in
one of the "local lists," but if the number of holders of the shares were to
fall below 300, the number of publicly held shares were to fall below 500,000 or
there were not at least two registered and active market makers for the shares,
the NASD's rules provide that the shares would no longer be "qualified" for
Nasdaq reporting and the Nasdaq would cease to provide any quotations. Shares
held directly or indirectly by directors, officers or beneficial owners of more
than 10% of the shares are not considered as being publicly held for this
purpose. If, following the closing of the offer, the shares of SierraCities no
longer meet the requirements of the NASD for continued inclusion in the Nasdaq
National Market or in any other tier of the Nasdaq and the shares were no longer
included in the Nasdaq National Market or in any other tier of the Nasdaq, the
market for the shares could be adversely affected.

     If Nasdaq were to delist the SierraCities shares, including after the
exchange of shares in the offer but prior to the merger, the market for them
could be adversely affected. It is possible that SierraCities shares would be
traded on other securities exchanges or in the over-the-counter market, and that
price quotations would be reported by such exchanges or by other sources. The
extent of the public market for the SierraCities shares and the availability of
such quotations would, however, depend upon the number of holders and/or the
aggregate market value of the SierraCities shares remaining at such time, the
interest in maintaining a market in the SierraCities shares on the part of
securities firms, the possible termination of registration of SierraCities
shares under the Exchange Act, as described below under "-- Registration under
the Exchange Act," and other factors.

     We intend to consummate the merger as soon as possible following completion
of the offer. No shares of SierraCities will remain publicly traded upon
completion of the merger.

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<PAGE>   63

  Status as "Margin Securities"

     The SierraCities shares are presently "margin securities" under the
regulations of the Federal Reserve Board, which has the effect, among other
things, of allowing brokers to extend credit on the collateral of SierraCities
shares. Depending on the factors similar to those described above with respect
to listing and market quotations, following the completion of the offer, the
SierraCities shares may no longer constitute "margin securities" for the
purposes of the Federal Reserve Board's margin regulations, in which event the
SierraCities shares would be ineligible as collateral for margin loans made by
brokers.

  Registration under the Exchange Act

     SierraCities shares are currently registered under the Exchange Act.
SierraCities can terminate that registration upon application to the SEC if the
outstanding shares are not listed on a national securities exchange or market
and if there are fewer than 300 holders of record of SierraCities shares.
Termination of registration of the SierraCities shares under the Exchange Act
would reduce the information that SierraCities must furnish to its stockholders
and to the SEC and would make certain provisions of the Exchange Act, such as
the short-swing profit recovery provisions of Section 16(b) and the requirement
of furnishing a proxy statement in connection with stockholders meetings
pursuant to Section 14(a) and the related requirement of furnishing an annual
report to stockholders, no longer applicable with respect to SierraCities
shares. Furthermore, the ability of "affiliates" of SierraCities and persons
holding "restricted securities" of SierraCities to dispose of such securities
pursuant to Rule 144 under the Securities Act may be impaired or eliminated. If
registration of the shares under the Exchange Act were terminated, they would no
longer be eligible for Nasdaq listing or for continued inclusion on the Federal
Reserve Board's list of "margin securities."

FRACTIONAL SHARES

     We will not issue to SierraCities stockholders fractional shares of our
common stock pursuant to the offer or the subsequent merger. Instead, the
exchange agent will aggregate and sell the fractional shares which would
otherwise be issued and distribute the proceeds to the former SierraCities
stockholders. None of the cash for fractional shares will come from us.

RELATIONSHIPS WITH SIERRACITIES

     Except as set forth in this prospectus, neither we nor, to the best of our
knowledge, any of our directors, executive officers or other affiliates has any
contract, arrangement, understanding or relationship with any other person with
respect to any securities of SierraCities, including, but not limited to, any
contract, arrangement, understanding or relationship concerning the transfer or
the voting of any such securities, joint ventures, loan or option arrangements,
puts or calls, guaranties of loans, guaranties against loss or the giving or
withholding of proxies. Except as described in this prospectus, there have been
no contacts, negotiations or transactions within the last two years between us
or, to the best of our knowledge, any of our directors, executive officers or
other affiliates on the one hand, and SierraCities or its affiliates, on the
other hand, concerning a merger, consolidation or acquisition, a tender offer or
other acquisition of securities, an election of directors, or a sale or other
transfer of a material amount of assets.

     On September 30, 1999, we entered into an agreement with SierraCities
pursuant to which they agreed to develop and maintain a co-branded Web site. The
approximate dollar amount of the transaction was $250,000. Except with respect
to this co-branded Web site agreement and as set forth in this prospectus,
neither we, nor, to the best of our knowledge, any of our directors, executive
officers or other affiliates has within the last two years entered into any
transaction with SierraCities or any of its executive officers, directors or
affiliates that would require disclosure under the rules and regulations of the
SEC applicable to the offer.

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ACCOUNTING TREATMENT

     Our acquisition of SierraCities would be accounted for under the purchase
method of accounting under U.S. generally accepted accounting principles, which
means that SierraCities' results of operations will be included with ours from
the closing date and its consolidated assets and liabilities will be recorded at
their fair values at the same date.

FEES AND EXPENSES

     We have retained Morgan Stanley & Co. Incorporated to provide certain
financial advisory services to us in connection with the offer and the merger.
Morgan Stanley will receive customary compensation for these services. We have
also agreed to reimburse Morgan Stanley for its expenses, including the fees and
expenses of its counsel, in connection with its engagement, and we have agreed
to indemnify Morgan Stanley and related persons against certain liabilities and
expenses in connection with its services as financial advisor, including certain
liabilities and expenses under the federal securities laws. From time to time,
Morgan Stanley and its affiliates may actively trade the debt and equity
securities of SierraCities for their own account or for the accounts of
customers and, accordingly, may hold a long or short position in these
securities.

     We have retained D.F. King & Co., Inc. to act as the information agent in
connection with the offer. The information agent may contact holders of
SierraCities shares by mail, telephone, or other means and may request brokers,
dealers and other nominee stockholders to forward the offer materials to
beneficial owners of SierraCities shares. The information agent will be paid a
customary fee for such services, plus reimbursement of out-of-pocket expenses,
and we will indemnify the information agent against certain liabilities and
expenses in connection with the offer, including liabilities under federal
securities laws.

     In addition, we have retained American Stock Transfer & Trust Company as
the exchange agent. We will pay the exchange agent customary compensation for
its services in connection with the offer, will reimburse the exchange agent for
its reasonable out-of-pocket expenses and will indemnify the exchange agent
against certain liabilities and expenses, including liabilities under the
federal securities laws.

     We will not pay any fees or commissions to any broker, dealer or other
persons (other than the information agent) for soliciting tenders of
SierraCities shares pursuant to the offer.

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                 THE MERGER AGREEMENT AND THE TENDER AGREEMENTS

     The merger agreement and the form of the tender agreements are filed as
Annex A and Annex B, respectively, to this prospectus. We believe the following
summary describes the material terms of the merger agreement and the tender
agreements. This summary, however, does not purport to describe all the terms of
the agreements. We recommend that you read carefully the complete agreements for
their precise terms and other information that may be important to you.

                              THE MERGER AGREEMENT

THE OFFER

     Conditions.  Our obligation to complete the offer is subject to the
conditions described on pages 49 through 51 of this prospectus and include the
minimum tender condition, the antitrust condition and the registration statement
effectiveness condition.

     We have agreed that, without the prior written consent of SierraCities, no
change may be made to the offer that:

     - changes the form of consideration to be paid;

     - decreases our offering price per share for SierraCities common stock or
       the number of shares of SierraCities common stock sought in the offer;

     - imposes conditions to the offer in addition to those set forth in the
       merger agreement or amends or waives the minimum tender condition;

     - extends the expiration date of the offer, other than as described below;
       or

     - makes any other change to any condition to the offer which is adverse to
       the holders of SierraCities shares.

     Consideration.  The merger agreement provides for the consideration that we
will pay in the offer. This consideration consists of a number of shares of our
common stock calculated using an exchange ratio based on the VerticalNet average
trading price. For a more thorough description of those matters, refer to the
discussion under "The Offer," including under the caption "-- Basic Terms."

     Expiration or Termination of the Offer.  We have agreed that if, at a
scheduled expiration date of the offer, the conditions to the offer have not
been satisfied or waived, other than conditions which are not capable of being
satisfied, we will extend the expiration date of the offer for an additional
amount of time, which shall not be longer than ten business days, without the
written consent of SierraCities, as is reasonably necessary to cause the offer
conditions to be satisfied. We have the right to extend the offer for any period
required by any rule or regulation of the SEC and, if more than 80% but less
than 90% of the outstanding shares of SierraCities common stock have been
tendered as of a scheduled expiration date, we have the right to extend the
offer for not more than five business days beyond the latest expiration date
that would otherwise be permitted.

THE MERGER

     Completion of the Merger.  If the conditions to the merger are satisfied or
waived in accordance with the merger agreement and in accordance with the
Delaware General Corporation Law, at the effective time of the merger, Truckee
will merge with SierraCities. SierraCities will survive the merger as our wholly
owned subsidiary.

     Effective Time of the Merger.  The merger will become effective upon the
filing of a certificate of merger with the Delaware Secretary of State. The
filing of the certificate of merger will take place as soon as practicable, but
no later than the second business day, after satisfaction or waiver of the
conditions described below under "-- Conditions to the Completion of the Merger"
on page 60.

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<PAGE>   66

     Additional Effects of the Merger.  Upon completion of the merger:

     - each outstanding share of capital stock of Truckee shall be converted
       into and become one share of common stock of SierraCities, as the
       corporation surviving the merger;

     - each outstanding share of SierraCities common stock shall be converted
       into the right to receive a fraction of a share of our common stock equal
       to the exchange ratio;

     - each share of SierraCities common stock that is owned by us or Truckee or
       held in the SierraCities treasury, other than shares of SierraCities
       common stock held in a SierraCities benefit plan, shall automatically be
       canceled and retired and shall cease to exist;

     - the directors and officers of Truckee at the effective time of the merger
       shall become the directors and officers of SierraCities, as the
       corporation surviving the merger;

     - the certificate of incorporation of Truckee at the effective time of the
       merger shall become the certificate of incorporation of SierraCities, as
       the corporation surviving the merger, except that the certificate of
       incorporation of Truckee shall be amended to provide that
       SierraCities.com Inc. shall be the name of the corporation surviving the
       merger; and

     - the bylaws of Truckee at the effective time of the merger will become the
       bylaws of SierraCities, as the corporation surviving the merger.

EXCHANGE AGENT; PROCEDURES FOR EXCHANGE OF CERTIFICATES

     Exchange Agent.  At the time the merger becomes effective, we will deposit
with the exchange agent certificates representing the number of whole shares of
our common stock issuable pursuant to the merger agreement in exchange for the
outstanding shares of SierraCities common stock. We will also deposit with the
exchange agent a certificate representing the aggregated fractional shares which
would otherwise be issued in exchange for the surrendered SierraCities shares
pursuant to the merger agreement. Soon after the completion of the merger, the
exchange agent will send a letter to each person who was a SierraCities
stockholder at the time the merger became effective. The letter will contain
instructions on how to surrender SierraCities stock certificates to the exchange
agent and receive shares of our common stock. See "The Offer -- Procedure for
Tendering."

     Dividends.  Holders of SierraCities shares will not be entitled to receive
any dividends or other distribution with respect to our shares declared by us
after the effective time of the merger until they exchange their SierraCities
stock certificates for certificates representing shares of our common stock.
Once they deliver their SierraCities stock certificates to the exchange agent
for exchange, those stockholders will be entitled to receive the amount of
dividends or distributions, without interest, with a record date after the
effective time of the merger.

     Fractional Shares.  No fractional shares of our common stock will be issued
upon the surrender of certificates representing SierraCities shares.
SierraCities stockholders will not have any dividend, voting or other rights of
a VerticalNet shareholder with respect to such fractional shares. The exchange
agent shall aggregate and sell fractional shares otherwise issuable under the
merger agreement on the Nasdaq National Market. Following such sale, the
exchange agent shall deliver to the former holders of SierraCities stock
otherwise entitled to receive a fractional share a check in an amount equal to
such stockholder's pro rata interest in the sale proceeds, based on the fraction
of a share of our common stock attributable to such stockholder.

     Dissenting Shares; Appraisal Rights.  If dissenters rights are applicable
to the merger under the Delaware General Corporation Law, any shares of
SierraCities capital stock held by a person who does not vote to approve the
merger and complies with all the provisions of the Delaware General Corporation
Law concerning the right of holders of shares to dissent from the merger and
require payment of fair value for their shares shall not be converted as
described in the merger agreement, but shall be converted into the right to
receive such consideration as may be determined to be due to a dissenting
stockholder pursuant to the Delaware General Corporation Law. If, after the time
the merger becomes effective, a dissenting
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<PAGE>   67

stockholder withdraws his demand or fails to perfect or otherwise loses his
rights as a dissenting stockholder to payment of fair value, in any case
pursuant to the Delaware General Corporation Law, the stockholder's SierraCities
shares shall be deemed to be converted as of the time the merger became
effective into the right to receive shares of our common stock. SierraCities has
agreed to give us prompt notice of any demands for fair value for SierraCities
shares received by SierraCities and the opportunity to participate in and direct
all negotiations and proceedings with respect to any such demands. SierraCities
has agreed to make all payments made to any dissenting stockholders out of its
own funds without reimbursement by us. SierraCities stockholders who tender
their SierraCities shares during the offer would not have appraisal rights in
connection with a merger. In the event of a short form merger, information
regarding the Delaware General Corporation Law requirements will be provided to
SierraCities stockholders who have not tendered their SierraCities shares.

SIERRACITIES BOARD OF DIRECTORS

     Upon acceptance for exchange of SierraCities shares in the offer, we will
be entitled to designate a number of SierraCities directors, rounded up to the
next whole number, equal to the percentage of total outstanding SierraCities
shares then held by us multiplied by the total number of SierraCities directors.
However, until the merger has been completed, we and SierraCities shall use best
efforts to ensure that the SierraCities' board of directors shall always have at
least two members who were directors of SierraCities prior to the completion of
the offer. The merger agreement provides that, prior to the effective time of
the merger, if our designees are elected to the SierraCities board, the
affirmative vote of a majority of the continuing SierraCities directors will be
required to:

     - amend or terminate the merger agreement;

     - waive compliance with any of the agreements or conditions under the
       merger agreement which are beneficial to SierraCities;

     - extend the time for performance of our or Truckee's obligations under the
       merger agreement; or

     - approve any other action by SierraCities which adversely affects the
       interests of SierraCities' stockholders, other than us and our
       affiliates.

SIERRACITIES STOCK OPTIONS AND EMPLOYEE BENEFITS

     Stock Options.  At the time the merger becomes effective, each outstanding
option to purchase SierraCities common stock, whether or not exercisable or
vested, shall be cancelled in exchange for a lump sum cash payment payable by
SierraCities, as the surviving corporation of the merger. Such cash payment
shall equal the number of SierraCities shares subject to the option, whether or
not vested, multiplied by the excess, if any, of the VerticalNet average trading
price multiplied by the exchange ratio, over the exercise price attributed to
the stock option.

     For more information on the treatment of SierraCities stock options in
connection with the offer and the merger, please refer to Item 3 of
SierraCities' Solicitation/Recommendation Statement on Schedule 14D-9 which is
being mailed to SierraCities stockholders together with this prospectus.

     Employee Benefits.  We have agreed to give credit under all employee
benefit plans, programs, policies and arrangements maintained by us or the
surviving corporation to each employee of SierraCities or its subsidiaries for
all service with SierraCities or its subsidiaries. In addition, we have agreed,
for a period of one year following the date the merger becomes effective, to
provide employees of SierraCities and its subsidiaries who are retained by us
with health and welfare benefits no less favorable in the aggregate than those
benefits provided to our similarly situated employees.

CONDUCT OF BUSINESS PENDING THE MERGER

     Conduct of SierraCities Business Pending the Merger.  SierraCities has
agreed that, except as expressly contemplated by the merger agreement and unless
we consent in advance in writing, during the

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<PAGE>   68

period from the execution and delivery of the merger agreement to the date that
our designees constitute a majority of the members of the SierraCities board of
directors, SierraCities and its subsidiaries will carry on their respective
businesses in substantially the same manner as conducted before the date of the
merger agreement.

     Conduct of Our Business Pending the Merger.  The merger agreement provides
that, except as expressly contemplated by the merger agreement, during the
period from the execution and delivery of the merger agreement to the date the
merger becomes effective, unless SierraCities consents in advance in writing, we
will not, directly or indirectly, do any of the following:

     - amend or propose to amend our articles of incorporation or bylaws;

     - split, combine or reclassify any outstanding shares of our capital stock,
       or declare, set aside or pay any dividend payable in cash, stock,
       property or otherwise with respect to our capital stock other than as
       required by the terms of securities outstanding on the date of the merger
       agreement;

     - redeem, purchase, acquire or offer to acquire any shares of our capital
       stock, other than as required by the terms of securities outstanding on
       the date of the merger agreement;

     - enter into any contract, agreement, commitment or arrangement with
       respect to any of the foregoing; or

     - take any action that would make any of our representations or warranties
       or Truckee's representations and warranties under the merger agreement
       inaccurate in any respect at or prior to the time the merger becomes
       effective, or omit to take any action necessary to prevent any such
       representation or warranty from being inaccurate in any respect.

SIERRACITIES STOCKHOLDERS MEETING

     If required by applicable law to effectuate the merger, the merger
agreement requires SierraCities to call a meeting of its stockholders as soon as
practicable after the expiration of the offer. SierraCities has agreed that,
through its board of directors and subject to the board's fiduciary duties, it
will recommend that its stockholders vote in favor of adopting the merger
agreement. At any such SierraCities stockholder meeting, we have agreed to vote
all SierraCities shares beneficially owned by us or any of our subsidiaries in
favor of adopting the merger agreement. If we or Truckee obtain at least 90% of
the outstanding SierraCities shares, we have agreed to effect the merger as soon
as practicable after the expiration of the offer without a SierraCities
stockholders meeting pursuant to Section 253 of the Delaware General Corporation
Law.

OTHER OFFERS

     The merger agreement provides that, from the date of the merger agreement
until the effective time of the merger or, if earlier, the termination of the
merger agreement, SierraCities will not, directly or indirectly:

     - solicit, initiate or encourage the submission of a proposal for any
       alternative transaction to the merger agreement; or

     - participate in any discussions or negotiations regarding, or furnish to
       any person or entity other than us, Truckee or any of our affiliates any
       information with respect to, or take any other action knowingly to
       facilitate, any alternative transaction or entertain any inquiries or the
       making of any proposal that constitutes, or may reasonably be expected to
       lead to, any alternative transaction;

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<PAGE>   69

provided, however, that SierraCities' board of directors may furnish information
to, or enter into discussions with, any third party that makes an unsolicited
bona fide written proposal for an alternative transaction, if, and only to the
extent that

     - SierraCities' board of directors, after consultation with outside legal
       counsel, determines in good faith that such action is necessary for the
       SierraCities' board of directors to comply with its fiduciary duties to
       SierraCities' stockholders under applicable law;

     - SierraCities' board of directors determines in good faith, after
       consulting with a financial advisor, that such alternative transaction
       would, if consummated, constitute or be reasonably likely to constitute a
       superior proposal to that set forth in the merger agreement; and

     - prior to taking such action, Sierra Cities promptly provides us with
       notice to the effect that it is taking such action, including the
       material terms and conditions of such alternative proposal and the
       identity of the person making it, provides us with a copy of any
       alternative transaction documents or amendments or supplements thereto
       and receives from the party making the alternative proposal an executed
       confidentiality agreement containing terms at least as stringent as those
       between us and SierraCities.

     Subsequent to furnishing information to, or entering into discussions or
negotiations with, any third party, SierraCities has agreed to promptly inform
us of the status of any discussions or negotiations with the third party, and
any material changes to the terms and conditions of such alternative
transaction.

     Under the merger agreement, SierraCities has agreed that its board of
directors will not withdraw or modify its approval or recommendation of the
merger agreement unless the board of directors determines, after consultation
with counsel, that they are required by their fiduciary duties to do so.
SierraCities has also agreed not to approve or recommend an alternative
transaction unless the following requirements are met:

     - the alternative transaction must be a superior proposal;

     - SierraCities' board of directors must first consult with outside legal
       counsel and determine that such action is necessary for it to comply with
       its fiduciary duties to the SierraCities stockholders;

     - SierraCities must provide us with written notice advising us that
       SierraCities has received a superior proposal, specifying the material
       terms and conditions of the superior proposal and identifying the person
       or entity making the superior proposal; and

     - SierraCities' board of directors must allow two business days to elapse
       after we receive notice of the superior proposal without receiving from
       us an offer that would cause the SierraCities board of directors to
       determine, after consulting with both a financial advisor of nationally
       recognized reputation and outside legal counsel, in its good faith
       judgment, that the alternative transaction is not a superior proposal to
       the merger.

     SierraCities can terminate the merger agreement to pursue an alternative
transaction only after the second business day following our receipt of written
notice from SierraCities advising us that SierraCities' board of directors is
prepared to accept the superior proposal, and SierraCities must pay us a
termination fee. See "-- Termination Events, Termination Fee."

     No provision of the merger agreement prohibits SierraCities from taking and
disclosing to its stockholders a position contemplated by Rule 14e-2(a)
promulgated under the Exchange Act or from making any disclosure to its
stockholders which, in the good faith reasonable judgment of the SierraCities
board of directors, based on the advice of outside legal counsel, is required
under applicable law.

DIRECTORS AND OFFICERS INSURANCE AND INDEMNIFICATION

     The merger agreement provides that, for six years after the effective time
of the merger, we and the corporation surviving the merger will indemnify, to
the fullest extent available under Delaware law and to the extent provided in
SierraCities' certificate of incorporation, bylaws and indemnity agreements in
effect
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at the time of the merger agreement, the current and former directors and
officers of SierraCities in respect of acts or omissions occurring on or prior
to the effective time of the merger. We have agreed to maintain SierraCities'
current directors and officers insurance and indemnification policy to the
extent that it provides coverage for events occurring prior to the effective
time of the merger and to provide similar coverage for a period of not less than
six years from the effective time of the merger for all persons who are
directors and officers of SierraCities on the date of the merger agreement,
provided that we will not be obligated to pay an annual premium for any such
coverage in excess of 150% of the premium paid by SierraCities for its most
recent fiscal year.

CONDITIONS TO THE COMPLETION OF THE MERGER.

     Each party's obligation to effect the merger is subject to the satisfaction
or waiver, prior to the time the merger becomes effective, of the following
conditions:

     - if required by applicable law, the merger agreement shall have been duly
       approved by the holders of at least two thirds of the outstanding shares
       of SierraCities common stock, in accordance with applicable law and the
       certificate of incorporation and bylaws of SierraCities;

     - no statute, rule, regulation, executive order, decree, ruling or
       injunction shall have been enacted, entered, promulgated or enforced by
       any United States governmental authority which prohibits, restrains or
       enjoins the consummation of the merger;

     - Truckee shall have accepted for payment and paid for all of the
       outstanding shares of SierraCities common stock pursuant to the offer,
       provided that neither we nor Truckee may assert this condition if our
       failure to accept all shares of SierraCities common stock for payment is
       in breach of the merger agreement or results from a breach of the merger
       agreement by either us or Truckee; and

     - in the event that the merger is not accomplished in accordance with the
       short form merger provisions of the Delaware General Corporation Law, the
       post-effective amendment to this registration statement shall have become
       effective in accordance with the provisions of the Securities Act, and no
       stop order shall have been issued, and no proceeding for that purpose
       shall have been initiated or be threatened, by the SEC with respect
       thereto.

TERMINATION EVENTS; TERMINATION FEE

     Termination Events.  The merger agreement may be terminated at any time
prior to the effective time of the merger, notwithstanding any approval of the
merger agreement by the stockholders of Truckee or SierraCities:

     - by mutual action of our board of directors and that of SierraCities;

     - by either SierraCities or us if any statute, rule, regulation, executive
       order, decree, ruling or injunction of or by any governmental entity
       which makes the consummation of the merger illegal is in effect and
       becomes final and nonappealable, unless such event is caused by the
       breach of the merger agreement by the party seeking such termination;

     - by either SierraCities or us if the offer expires without the acceptance
       for payment of the outstanding shares of SierraCities common stock
       thereunder, unless such event is caused by the breach of the merger
       agreement by the party seeking such termination;

     - by either SierraCities or us if the acceptance for payment of the
       outstanding shares of SierraCities common stock pursuant to the offer has
       not occurred on or prior to the close of business on February 28, 2001,
       unless such event is caused by the breach of the merger agreement by the
       party seeking such termination;

     - by SierraCities, prior to acceptance for payment of the outstanding
       shares of SierraCities common stock in the offer, to enter into a
       definitive written agreement with respect to an alternative transaction
       with a third party, provided that, prior to entering into such definitive
       agreement,

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       SierraCities shall have given us the required notice of such alternative
       transaction and paid the termination fee described below;

     - by us, if, prior to the acceptance for payment of the outstanding shares
       of SierraCities common stock in the offer, the SierraCities board of
       directors publicly withdraws, modifies or amends in a manner adverse to
       Truckee its approval or recommendation of the merger, the offer or the
       merger agreement, (or fails to make a favorable recommendation) or
       publicly approves, recommends or endorses any proposal for, or authorizes
       SierraCities to enter into an alternative transaction;

     - by SierraCities if, prior to the acceptance for payment of the
       outstanding shares of SierraCities common stock in the offer, we fail to
       perform in all material respects our covenants and obligations contained
       in the merger agreement, which failure to perform has not been cured
       within ten business days after giving notice to us;

     - by us if, prior to the acceptance for payment of the outstanding shares
       of SierraCities common stock in the offer, SierraCities fails to perform
       in all material respects its covenants and obligations contained in the
       merger agreement, which failure to perform has not been cured within ten
       business days after giving notice to SierraCities;

     - by SierraCities if the VerticalNet average trading price is less than
       $15.00; or

     - by us, if any person or entity other than us or our affiliates acquires
       more than 20% of the outstanding shares of SierraCities common stock.

     Termination Fee; Expenses.  SierraCities has agreed to pay us a fee of $5.3
million upon the occurrence of any of the following events:

     - if the merger agreement is terminated by SierraCities in order for it to
       enter into an alternative transaction (see "The Merger Agreement and the
       Tender Agreement -- The Merger Agreement -- Other Offers");

     - the merger agreement is terminated by us in the event that SierraCities'
       board of directors publicly withdraws, modifies or amends in a manner
       adverse to us its approval or recommendation (or fails to make a
       favorable recommendation) of the merger, the offer or the merger
       agreement, or publicly approves, recommends or endorses any proposal for,
       or authorizes SierraCities to enter into an alternative transaction,
       unless the change in recommendation is due to our having failed to comply
       with or perform, or having breached, in any material respect any
       provision of the merger agreement or having experienced an event or
       occurrence that has caused a material adverse effect to our business or
       financial condition, other than effects due to general economic, market
       or political conditions, matters generally affecting the industry in
       which we operate or the announcement or expectation of the merger
       agreement; or

     - after the date of the merger agreement and prior to its termination, (x)
       a third party shall make a bona fide proposal for an alternative
       transaction, (y) the merger agreement is terminated due to failure of the
       condition that at least two thirds of the outstanding shares of
       SierraCities be tendered by SierraCities stockholders or due to
       SierraCities' willful breach of its agreements and covenants contained in
       the merger agreement, and (z) SierraCities enters into a definitive
       agreement with respect to, or consummates, an alternative transaction
       within 12 months following the termination of the merger agreement.

     The merger agreement provides that, in addition to the termination fee paid
or payable by SierraCities to us as described above, SierraCities shall pay us
for all reasonable costs and expenses which we incur in connection with a suit
brought by us that results in a judgment against SierraCities for the
termination fee. If we commence a suit which does not result in a judgment, we
have agreed to pay SierraCities for its reasonable costs and expenses incurred
in connection with such litigation.

     The merger agreement further provides that in the event the merger is not
consummated, all fees and expenses incurred in connection with the negotiation,
preparation and execution of the merger agreement

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shall be paid by the party incurring such fees or expenses, except that, if the
merger agreement is terminated as a result of a willful and material
misrepresentation of either party or a willful and material breach by either
party, such party shall pay the costs and expenses incurred in connection with
the merger agreement.

     In addition, the merger agreement provides that we shall share equally with
SierraCities all fees and expenses, other than attorneys' fees, incurred in
connection with:

     - The filing, printing and mailing of this registration statement, the
       prospectus and any amendments or supplements hereto; and

     - The filing of the premerger notification and report forms relating to the
       merger under the HSR Act and the filing of any notice or other document
       under any applicable antitrust law.

OTHER PROVISIONS

     Tax Treatment.  Each of the parties has agreed that it will not take or
permit to be taken any action, or fail to take any action, if such action or
failure would be reasonably likely to cause the offer and merger not to qualify
as a "reorganization" within the meaning of Section 368(a) of the Internal
Revenue Code.

     Off Balance Sheet Transactions.  SierraCities has agreed to use its
reasonable best efforts to take such actions as would cause certain of its lease
portfolio assets to not be characterized, in accordance with generally accepted
accounting principles, as assets on SierraCities' balance sheet immediately
following the closing of the offer.

     Lease Portfolio Liquidation.  SierraCities has agreed to use its reasonable
best efforts to implement a plan agreed to between the parties relating to the
sale, liquidation or refinancing of certain identified lease portfolio assets of
SierraCities prior to or simultaneously with the completion of the merger.

     Representations and Warranties.  The merger agreement contains customary
representations and warranties relating to each of the parties and their ability
to consummate the offer and the merger. All representations and warranties of
VerticalNet and SierraCities expire at the time the merger becomes effective.

     Access To Information.  Each of VerticalNet and SierraCities has agreed to
afford, and to cause their respective officers, directors, employees,
representatives and agents to afford, from the date of the merger agreement to
the effective time, the officers, employees, representatives and agents of the
other party reasonable access during regular business hours to its officers,
employees, agents, properties, books, records and workpapers, and to promptly
furnish the other party all financial, operating and other information and data
as the other may reasonably request. Except as required by law, each party shall
hold any confidential information in accordance with the confidentiality
agreement between VerticalNet and SierraCities.

     Further Assurances.  Each of the parties to the merger agreement has agreed
to use all reasonable efforts to take, or cause to be taken, all actions, and to
do, or cause to be done, all things reasonably necessary, proper or advisable
under applicable laws and regulations to consummate and make effective the
transactions contemplated by the merger agreement as promptly as practicable.

                             THE TENDER AGREEMENTS

PARTIES

     Certain directors and executive officers of SierraCities and entities
affiliated with such directors and executive officers, who directly or
indirectly collectively hold an aggregate of approximately 20% of the
outstanding shares of SierraCities common stock and collectively have the right
to acquire an additional 1,178,916 shares upon the exercise of outstanding
SierraCities stock options, have entered into tender agreements with us. Because
all stock options will be cancelled for a lump sum cash payment pursuant to the
merger agreement, we do not anticipate that any of these options will be
exercised.

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<PAGE>   73

AGREEMENTS TO TENDER

     Each SierraCities stockholder who signed a tender agreement agreed to
tender in the offer and not withdraw any of his, her or its SierraCities shares
and any additional SierraCities shares acquired by such stockholder after the
date of the tender agreement.

PROXY

     Each SierraCities stockholder who signed a tender agreement granted us, or
any of our nominees, a proxy to vote or consent all of such stockholder's
SierraCities shares:

     - in favor of the adoption of the merger agreement and approval of the
       merger and the other transactions contemplated by the merger agreement;

     - against any proposal for any recapitalization, merger, sale of assets or
       other business combination between SierraCities and any person or entity,
       other than the merger contemplated by the merger agreement; and

     - against any action or agreement that would result in a breach of any
       covenant, representation or warranty or would result in any other
       obligation or agreement of SierraCities under the merger agreement not
       being fulfilled or would result in payment by SierraCities of the
       termination fee set forth under "-- Termination Events; Termination Fee."

  No Solicitation

     Each SierraCities stockholder who signed a tender agreement further agreed
not to, directly or indirectly:

     - subject to such stockholder's fiduciary duty as a director of
       SierraCities, if applicable, solicit, initiate or encourage, or authorize
       any person to solicit, initiate or encourage, any inquiry, proposal or
       offer from any person or entity to acquire the business, property or
       capital stock of SierraCities or any subsidiary of SierraCities, or any
       acquisition of a substantial equity interest in, or a substantial amount
       of assets of, SierraCities or any subsidiary of SierraCities, whether by
       merger, purchase of assets, tender offer or other transaction; and

     - subject to such stockholder's fiduciary duty as a director of
       SierraCities, if applicable, participate in any discussion or
       negotiations regarding, or furnish to any other person or entity any
       information with respect to, or otherwise cooperate in any way with, or
       participate in, facilitate or encourage any effort or attempt by any
       other person or entity to make or seek any such inquiry, proposal or
       offer.

  Termination

     The tender agreements provide that they and the proxies granted under the
tender agreements will terminate upon the earliest to occur of (a) termination
of the merger agreement in accordance with its terms, (b) the effective time of
the merger, (c) the date on which all of the stockholder's SierraCities shares
are purchased pursuant to the offer, or (d) the termination of the offer without
the purchase of any SierraCities shares.

                                       63
<PAGE>   74

                          INTERESTS OF CERTAIN PERSONS

     The information contained in the Information Statement attached as Schedule
I to the Schedule 14D-9 of SierraCities dated November 16, 2000 is incorporated
herein by reference. To our knowledge, each material agreement, arrangement or
understanding and any actual or potential conflict of interest between
SierraCities and SierraCities' executive officers, directors or affiliates, or
between SierraCities and Truckee or VerticalNet or their respective executive
officers, directors or affiliates, is either incorporated herein by reference as
a result of the previous sentence or is set forth below.

EMPLOYMENT AND SEVERANCE AGREEMENTS

     In connection with the negotiation of the merger agreement, we required
that the employment agreements and any change in control agreements of Thomas
Depping, Sandy Ho and Roger Gebhart be replaced with new employment agreements,
in order to help retain these officers following the consummation of the offer.
These new agreements provide for three-year employment terms and will become
effective only upon the consummation of the offer. The agreements provide for
initial base salaries of $250,000 for Mr. Depping, $200,000 for Ms. Ho and
$200,000 for Mr. Gebhart, subject to annual review by our board of directors for
merit increases. The agreements provide for annual target bonuses of up to 30%
of base salary in the case of Ms. Ho and Mr. Gebhart and up to 40% of base
salary in the case of Mr. Depping, based upon achievement of targets set by our
board of directors. The agreements provide that on the effective date of the
agreement, Mr. Depping, Ms. Ho and Mr. Gebhart will be granted stock options to
purchase 150,000, 75,000 and 125,000 shares of our common stock, respectively,
50% of which vest over three years based upon continued employment, and 50% of
which vest fully after five years based upon continued employment, unless
specified performance criteria have been achieved at an earlier time. Mr.
Gebhart's agreement provides for a sign-on bonus of $600,000, payable on the
closing date of the exchange offer. The agreements for Mr. Depping and Ms. Ho
provide that in the event that he or she is terminated "without cause" or quits
for "good reason," and provided the officer executes a release in favor of
VerticalNet, he or she will receive a lump sum severance payment of $1,200,000
for Mr. Depping and $836,530 for Ms. Ho (with such amount to be reduced pro rata
for each month into the employment term that the termination occurs). Each of
the agreements also provides for certain restrictive covenants in favor of
VerticalNet, including noncompetition, nonsolicitation, nondisclosure of
confidential information and assignment of inventions provisions.

     This summary of the terms of the new employment agreements is qualified in
its entirety by reference to the text of the form of employment agreement, which
has been filed as Exhibit (e)(4) to the Schedule 14D-9 filed by SierraCities on
November 16, 2000, and is incorporated herein by reference. Information
regarding the prior employment agreements with certain executive officers is
included in Schedule I of such Schedule 14D-9.

     Michael Sabel, executive vice president and chief e-commerce officer of
SierraCities, is a party to an employment agreement with SierraCities, dated May
27, 1998, which provides that in the event of a change in control of
SierraCities, as defined in the agreement, which would include the consummation
of the offer, he shall be paid a lump sum payment equal to 2.99 times the cash
compensation paid to him in the year prior to the change in control. In
addition, in the event that the payment under the agreement, together with any
other payments due to him on account of such change in control, are deemed to be
excess parachute payments under section 280G of the internal revenue code, the
severance payment will be reduced so that there would be no excess parachute
payment.

     David Pederson, executive vice president and chief information officer of
SierraCities, is a party to an employment agreement with SierraCities dated
April 13, 1998, which provides that if Mr. Pederson's employment is terminated
following the acquisition of SierraCities by another entity where SierraCities
is not the surviving entity, Mr. Pederson is entitled to receive a termination
fee equal to the amount of his base salary due over the remaining months in the
five-year term of the employment agreement. Further information regarding Mr.
Sabel's and Mr. Pederson's employment agreements is included in Schedule I to
the Schedule 14D-9 discussed above.

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<PAGE>   75

STOCK OPTIONS

     The merger agreement provides that each outstanding option to purchase
shares of SierraCities common stock under the SierraCities stock option plans
will be cancelled in exchange for a cash payment, less applicable withholding
tax, equal to the number of shares subject to such option multiplied by the
excess, if any, of the VerticalNet average trading price multiplied by the
exchange ratio over the exercise price per share of each such option. As of
November 6, 2000, executive officers and directors held options to purchase a
total of 1,840,941 shares of SierraCities common stock, with an average exercise
price of approximately $11.87.

     It is anticipated that we will award options to purchase approximately
1,000,000 shares of our common stock to SierraCities employees following
consummation of the merger.

SIERRACITIES BENEFIT PLANS

     Pursuant to the terms of the merger agreement, we have agreed that, at
least through the first anniversary of the effective time of the merger, we will
provide all current and former employees of SierraCities with health and welfare
benefits under employee benefit plans with terms that are no less favorable, in
the aggregate, than those that are available to our similarly situated
employees. To the extent permitted under applicable law, we shall give the
employees of SierraCities and its subsidiaries credit for their service with
SierraCities and such subsidiaries under our employee benefit plans, programs
and policies in which such employees participate.

DIRECTORS' AND OFFICERS' INSURANCE; INDEMNIFICATION

     The merger agreement provides that for a period of six years from the
effective time of the merger, the corporation surviving the merger will maintain
in effect directors' and officers' liability insurance covering those persons
who were covered under SierraCities directors' and officers' liability insurance
on November 6, 2000. Such insurance shall be no less favorable than
SierraCities' existing policies and shall cover events occurring prior to the
effective time of the merger. We are not required to expend an amount in excess
of 150% of the annual premiums currently paid by SierraCities for such
insurance.

     The surviving corporation of the merger will also indemnify each such
officer and director for a period of six years to the fullest extent that those
individuals are currently entitled to indemnification under Delaware law and
under the SierraCities' certificate of incorporation and bylaws.

THE TENDER AGREEMENTS

     Immediately prior to the signing of the merger agreement, directors,
executive officers and entities affiliated with these directors and executive
officers, who collectively hold approximately 20% of the outstanding
SierraCities common stock, entered into tender agreements with us. Each
SierraCities stockholder who signed a tender agreement agreed to tender in the
offer and not withdraw all of his or her shares of SierraCities and any
additional shares of SierraCities acquired by such stockholder after the date of
the tender agreement.

     See "The Merger Agreement and the Tender Agreements -- The Tender
Agreements."

                    MATERIAL FEDERAL INCOME TAX CONSEQUENCES

     The following discussion summarizes the anticipated material U.S. federal
income tax consequences of the offer and the merger to SierraCities stockholders
who exchange their SierraCities shares for our common shares pursuant to the
offer or the merger. This discussion does not purport to be a complete analysis
or discussion of all potential tax effects relevant to the offer and the merger.
Further, this tax discussion does not address all of the U.S. federal income tax
consequences that may be relevant to SierraCities stockholders in light of their
particular circumstances; nor does the discussion address the U.S. federal
income tax consequences that may be applicable to SierraCities stockholders
subject to special tax

                                       65
<PAGE>   76

treatment under the Internal Revenue Code of 1986, as amended (which we refer to
as the Code), such as stockholders:

     - who are dealers in securities, traders that mark to market, foreign
       individuals (i.e., individuals who are not citizens or residents of the
       United States), foreign corporations, foreign partnerships or other
       foreign entities, mutual funds, financial institutions, insurance
       companies or tax-exempt entities;

     - who acquired their shares through the exercise of stock options, through
       stock purchase plans, in other compensatory transactions, or through a
       tax-qualified retirement plan;

     - whose shares are qualified small business stock for purposes of Section
       1202 of the Code;

     - who hold their shares as part of an integrated investment such as a
       hedge, straddle, constructive sale or other risk reduction strategy or as
       part of a conversion transaction;

     - who do not hold their shares as capital assets; or

     - whose functional currency is not the U.S. dollar.

     In addition, the following tax discussion does not address the tax
consequences, if any, of the offer or the merger under state, local, foreign,
and other tax laws. The tax opinions described below and this tax discussion are
based upon the provisions of the Code, applicable Treasury regulations, judicial
decisions and Internal Revenue Service (which we refer to as the IRS) rulings,
in each case, as in effect as of the date of this document. There can be no
assurance that future legislative, judicial or administrative changes or
interpretations, which changes or interpretations could apply retroactively,
will not affect the accuracy of the statements or conclusions set forth in the
tax opinions summarized below or in this tax discussion. No rulings have been or
will be sought from the IRS concerning the tax consequences of the offer and the
merger and neither this tax discussion nor the tax opinions described below will
be binding on the IRS or any court. The IRS could adopt a contrary position, and
such contrary position could be sustained by a court.

     VerticalNet and SierraCities have been advised by Cooley Godward LLP and
Dewey Ballantine LLP, respectively, that it is their opinion that, although the
matter is not free from doubt, for U.S. federal income tax purposes the offer
and the merger will constitute a reorganization within the meaning of Section
368(a) of the Code. These tax opinions are attached as Exhibits 8.1 and 8.2,
respectively, to the registration statement on Form S-4 filed with the
Securities and Exchange Commission, which includes this prospectus. The tax
opinions described above and the consequences summarized below under "Federal
Income Tax Consequences If the Offer and the Merger Qualify As a Reorganization"
are conditioned upon, among other things, all of the following factual
assumptions (which we refer to as the supporting conditions):

     - the merger is completed promptly after the offer;

     - the offer and the merger are completed under the current terms of the
       merger agreement; and

     - the minimum tender condition for the offer is satisfied.

     In addition to these supporting conditions, the opinions of Cooley Godward
LLP and Dewey Ballantine LLP have relied upon, and the consequences summarized
below under "Federal Income Tax Consequences If the Offer and the Merger Qualify
As a Reorganization" are based upon, representations and covenants made by
SierraCities and VerticalNet, including those contained in tax representation
letters of SierraCities, VerticalNet and Truckee Acquisition, and certain
assumptions including the absence of changes in facts or in law between the date
of this prospectus and the effective time of the merger. If any of those
representations, covenants or assumptions are inaccurate or if the supporting
conditions are not satisfied, the tax opinions of Cooley Godward LLP and Dewey
Ballantine LLP described above cannot be relied upon. In addition, the ability
to satisfy the supporting conditions, and therefore the federal income tax
consequences of the offer and the merger, depend in part on facts that will not
be available before the completion of the merger. There can be no assurance that
the merger will be completed, or that
                                       66
<PAGE>   77

the supporting conditions will be satisfied. Also, as noted above, it is
possible that a court might reach a conclusion contrary to the conclusion
reached in the tax opinions. Accordingly, it is possible that the offer and/or
the merger may not qualify as a reorganization, and the tax consequences of the
offer and/or the merger could differ materially from those summarized below
under "Federal Income Tax Consequences If the Offer and the Merger Qualify As a
Reorganization." See "Federal Income Tax Consequences If the Offer and/or the
Merger Does Not Qualify As a Reorganization."

FEDERAL INCOME TAX CONSEQUENCES IF THE OFFER AND THE MERGER QUALIFY AS A
REORGANIZATION

     Assuming that the offer and the merger qualify as a reorganization, and
subject to the assumptions, limitations and qualifications described above, for
federal income tax purposes:

     - A holder of SierraCities shares will not recognize any gain or loss upon
       exchange of the holder's SierraCities shares for VerticalNet shares in
       the offer or the merger, except for gain or loss resulting from cash that
       the holder receives instead of a fractional share of VerticalNet common
       stock.

     - A holder of SierraCities shares will have an aggregate tax basis in the
       VerticalNet shares received in the offer or the merger equal to (1) the
       aggregate tax basis in the SierraCities shares surrendered by that holder
       in the offer or merger, reduced by (2) any tax basis in such SierraCities
       shares that is allocable to a fraction of a VerticalNet common share for
       which cash is received.

     - The holding period for VerticalNet shares received in exchange for
       SierraCities shares in the offer or the merger will include the holding
       period for SierraCities shares surrendered for them in the offer or the
       merger.

     - Under specified circumstances, holders of SierraCities shares may be
       entitled to appraisal rights in connection with the merger. If appraisal
       rights are available, and a holder of SierraCities shares receives cash
       pursuant to the exercise of appraisal rights, such holder generally will
       recognize income, gain or loss, measured by the difference between the
       amount realized and such holder's tax basis in such SierraCities shares.
       A holder of SierraCities shares who exercises appraisal rights is urged
       to consult his or her own tax advisor.

FEDERAL INCOME TAX CONSEQUENCES IF THE OFFER AND/OR THE MERGER DOES NOT QUALIFY
AS A REORGANIZATION

     If the offer and/or the merger does not qualify as a reorganization, each
SierraCities stockholder realizing gain on the exchange of SierraCities shares
for VerticalNet shares in the offer and/or the merger, as applicable, generally
will recognize capital gain, measured by the difference between the fair market
value of the VerticalNet shares received by such stockholder (together with any
cash received by such stockholder instead of a fraction of a VerticalNet share)
and such stockholder's tax basis in the SierraCities shares surrendered. This
capital gain will be long-term capital gain if such stockholder held such
SierraCities shares for more than one year at the time such SierraCities shares
are accepted in the offer or at the effective time of the merger, as applicable.

     SierraCities stockholders are urged to consult their own tax advisor
regarding the recognition of loss, if any, and their basis and holding period in
the VerticalNet shares if the offer and/or the merger does not qualify as a
reorganization.

FEDERAL INCOME TAX CONSEQUENCES IF THE MERGER IS NOT CONSUMMATED

     In addition to the limitations, assumptions and qualifications described
above, this tax discussion does not address, and no opinion has been given
concerning, any tax consequences of the offer if the merger is not consummated.
If the merger is not consummated, the federal income tax consequences of the
exchange of SierraCities shares for VerticalNet shares in the offer will depend
on facts and circumstances that are not yet known. Such facts and circumstances
include, among other things, the percentage of

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<PAGE>   78

SierraCities shares tendered in the offer. You are urged to consult your tax
advisor regarding the tax consequences to you of your participation in the offer
if the merger is not consummated.

     THE SUMMARY OF MATERIAL U.S. FEDERAL INCOME TAX CONSEQUENCES SET FORTH
ABOVE IS INTENDED TO PROVIDE ONLY A GENERAL SUMMARY AND IS NOT INTENDED TO BE A
COMPLETE ANALYSIS OR DESCRIPTION OF ALL POTENTIAL U.S. FEDERAL INCOME TAX
CONSEQUENCES OF THE OFFER AND THE MERGER. IN ADDITION, THE SUMMARY DOES NOT
ADDRESS TAX CONSEQUENCES THAT MAY VARY WITH, OR ARE CONTINGENT ON, INDIVIDUAL
CIRCUMSTANCES. MOREOVER, THE SUMMARY DOES NOT ADDRESS ANY NON-INCOME TAX OR ANY
FOREIGN, STATE, LOCAL OR OTHER TAX CONSEQUENCES OF THE OFFER OR THE MERGER. THE
SUMMARY DOES NOT ADDRESS THE TAX CONSEQUENCES OF ANY TRANSACTION OTHER THAN THE
OFFER AND THE MERGER. ACCORDINGLY, EACH SIERRACITIES STOCKHOLDER IS STRONGLY
URGED TO CONSULT WITH A TAX ADVISOR TO DETERMINE THE PARTICULAR FEDERAL, STATE,
LOCAL OR FOREIGN INCOME, REPORTING OR OTHER TAX CONSEQUENCES OF THE OFFER AND
THE MERGER TO SUCH STOCKHOLDER.

                          MARKET PRICES AND DIVIDENDS

     Our common shares are listed and principally traded on Nasdaq under the
symbol "VERT." SierraCities common shares are listed and principally traded on
Nasdaq under the symbol "BTOB."

     The following table sets forth, for the full calendar quarters ended on the
dates indicated, the high and low last reported prices per VerticalNet share and
SierraCities share, in each case as reported on the Nasdaq National Market.
VerticalNet share price data reflect two separate two-for-one stock splits, each
effected in the form of a stock dividend. The record dates for the stock splits
were August 9, 1999 and March 17, 2000, respectively.

<TABLE>
<CAPTION>
                                                 VERTICALNET COMMON       SIERRACITIES COMMON
                                                        STOCK                    STOCK
                                                 -------------------      --------------------
                                                   HIGH        LOW         HIGH          LOW
                                                 --------    -------      -------      -------
<S>                                              <C>         <C>          <C>          <C>
FISCAL YEAR 1998:
  March 31, 1998*..............................  $     --    $    --      $26.000      $16.563
  June 30, 1998*...............................        --         --       30.500       23.750
  September 30, 1998*..........................        --         --       31.750        6.875
  December 31, 1998*...........................        --         --       12.250        6.250
FISCAL YEAR 1999:
  March 31, 1999*..............................     27.13       8.75       12.125        8.500
  June 30, 1999................................    35.000     14.172       29.250        9.125
  September 30, 1999...........................    28.766     14.625       24.688        9.313
  December 31, 1999............................    86.000     19.859       24.000       11.000
FISCAL YEAR 2000:
  March 31, 2000...............................   138.883     67.500       23.625       13.375
  June 30, 2000................................    59.750     28.000       12.750        2.969
  September 30, 2000...........................    62.047     30.250        4.219        1.969
  Fourth Quarter (through November 15, 2000)...    32.625     18.563        5.859        3.031
</TABLE>

---------------
* Shares of VerticalNet common stock did not trade publicly until February 11,
  1999.

     On November 6, 2000, the last full trading day prior to the public
announcement of the offer and the merger, the last sale price per VerticalNet
common share on the Nasdaq National Market was $29.50 and the last sale price
per SierraCities common share was $4.25. On November 15, 2000, the most recent
practicable date prior to the printing of this document, the last sale price per
share of our common stock was $20.19 and the last sale price per SierraCities
common share was $5.06.

     Neither we nor SierraCities has ever declared or paid any cash dividends on
its common stock or other securities and neither anticipates paying cash
dividends in the foreseeable future.

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<PAGE>   79

                    DESCRIPTION OF VERTICALNET CAPITAL STOCK

     The following description of the terms of our capital stock is not meant to
be complete and is qualified by reference to our articles of incorporation and
bylaws, which are incorporated in this prospectus by reference. See "Where You
Can Find More Information" on page vii of this prospectus.

OUR AUTHORIZED CAPITAL STOCK

     Under our articles of incorporation, our authorized capital stock consists
of (a) 1,000,000,000 shares of common stock, par value $.01 per share and (b)
10,000,000 shares of preferred stock, par value $.01 per share.

OUR COMMON STOCK

     Shares Outstanding.  As of November 2, 2000, 87,540,058 shares of our
common stock were outstanding.

     Full Payment And Nonassessability.  The outstanding shares of our common
stock are, and the shares of our common stock to be issued pursuant to the offer
and the merger will be, duly authorized, validly issued, fully paid and
nonassessable.

     Voting Rights.  Holders of our common stock are entitled to one vote for
each share held of record on all matters on which shareholders may vote.

     Dividend Rights.  Holders of our common stock are entitled to receive, as
declared by the board of directors, dividends and other distributions in cash,
stock or property from funds legally available for that purpose, subject to any
dividend preferences that may be attributable to our Series A preferred stock or
other class or series of our preferred stock.

     Preemptive Rights.  There are no preemptive, conversion, redemption or
sinking fund provisions applicable to our common stock.

     Rights Upon Liquidation.  In the event of our liquidation, dissolution or
winding up, holders of our common stock are entitled to share ratably in the
assets available for distribution after payment in full of amounts owed to our
creditors and amounts that holders of our Series A preferred stock are, or that
holders of any other series of preferred stock that we may in the future issue
shall be, entitled pursuant to any applicable liquidation preference.

OUR PREFERRED STOCK

     As of November 2, 2000, 250,000 shares of our preferred stock were
designated as Series A 6.00% convertible redeemable preferred stock, 101,450
shares of which were outstanding as of that date.

     Our board of directors, without further action by our shareholders, is
authorized to issue the remaining shares of preferred stock in one or more
classes or series and with designations, voting rights, preferences and special
rights as our board may fix by resolution. Any rights or preferences fixed by
our board could adversely affect the rights of the holders of common stock. For
example, with respect to our Series A preferred stock:

     - Its holders are entitled to cumulative preferred dividends accumulating
       at a rate of 6.0% of the liquidation preference ($1,000 per share) per
       year, payable quarterly in arrears on January 1, April 1, July and
       October 1 of each year. We may not declare or pay, or set aside funds to
       pay, any dividend or other distribution to the holders of our common
       stock or any other security ranking junior to the Series A preferred
       stock unless we have previously declared and paid, or set aside

                                       69
<PAGE>   80

       funds to pay, all dividends for preceding dividend periods to which the
       holders of the Series A preferred stock are entitled.

     - In the event of a liquidation, the holders of the Series A preferred
       stock will receive a liquidation preference in the amount of $1,000 per
       share, plus any accumulated and unpaid dividends, before any distribution
       is made to our common shareholders.

     Our issuance of preferred stock, while providing desirable flexibility in
connection with possible acquisitions or other corporate purposes, could have
the effect of making it more difficult for a third party to acquire, or could
discourage or delay a third party from acquiring, a majority of our outstanding
stock. At present, we have no plans to issue any more shares of preferred stock.

                                       70
<PAGE>   81

             COMPARISON OF RIGHTS OF HOLDERS OF VERTICALNET SHARES
                            AND SIERRACITIES SHARES

     The rights of our shareholders are governed by the Pennsylvania Business
Corporation Law, our articles of incorporation and our bylaws. The rights of
SierraCities stockholders are governed by the Delaware General Corporation Law
and SierraCities' certificate of incorporation and bylaws. Our articles of
incorporation and bylaws differ from the SierraCities certificate of
incorporation and bylaws in certain respects. Upon completion of the merger,
SierraCities stockholders will become VerticalNet shareholders and their rights
will become subject to the provisions of Pennsylvania law and the VerticalNet
articles of incorporation and bylaws. The material differences between the
rights of SierraCities stockholders and VerticalNet shareholders are summarized
below.

     The following discussions are not intended to be complete. You should also
refer to Pennsylvania corporate law, our articles of incorporation and our
bylaws. Copies of our articles of incorporation, our bylaws, the SierraCities
certificate of incorporation and the SierraCities bylaws will be sent to the
shareholders of VerticalNet and stockholders of SierraCities upon request. See
"Where You Can Find More Information" on page vii.

DIVIDEND RIGHTS AND REPURCHASE OF SHARES

  SierraCities

     Under Delaware corporate law, a corporation may pay dividends out of
surplus or, if no surplus exists, out of net profits, for the fiscal year in
which the dividends are declared and/or for its preceding fiscal year, provided
that dividends may not be paid out of net profits if the capital of the
corporation is less than the aggregate amount of capital represented by the
outstanding stock of all classes having a preference upon the distribution of
assets. In addition, Delaware corporate law generally provides that a
corporation may redeem or repurchase its shares only if such redemption or
repurchase would not impair the capital of the corporation. The ability of a
Delaware corporation to pay dividends on, or to make repurchases or redemptions
of, its shares is dependent on the financial status of the corporation standing
alone and not on a consolidated basis.

  VerticalNet

     Under Pennsylvania corporate law, a corporation is prohibited from making a
distribution to its shareholders if, after giving effect to the distribution:

     - the corporation would be unable to pay its debts as they become due in
       the usual course of business; or

     - the total assets of the corporation would be less than the sum of its
       total liabilities plus the amount that would be needed, if that
       corporation were then dissolved, to satisfy the rights of shareholders
       having superior preferential rights upon dissolution to the shareholders
       receiving the distribution. The board of directors may base this
       determination on one or more of the following: the book or current value
       of the corporation's assets and liabilities, unrealized appreciation and
       depreciation of the corporation's assets and liabilities or any other
       method that is reasonable in the circumstances.

     The rights of our common shareholders to receive dividends are subject to
the rights and preferences of holders of our Series A preferred stock and any
other future series of preferred stock with preferential dividend rights.

NUMBER AND ELECTION OF DIRECTORS

  SierraCities

     Under Delaware corporate law, the certificate of incorporation of a
corporation may authorize cumulative voting in the election of directors. The
SierraCities certificate of incorporation, however, does not provide for
cummulative voting. The SierraCities certificate of incorporation divides the
SierraCities

                                       71
<PAGE>   82

board of directors into three classes. The directors of each class are elected
for three-year terms, with the terms of the three classes staggered so that
directors from a single class are elected at each annual meeting of
stockholders. SierraCities stockholders may remove a director only for cause
upon the vote of at least 80% of the then outstanding shares of the class of
stock entitled to vote upon the election of directors of that class or series.
In general, the SierraCities board of directors, not the stockholders, has the
right to appoint persons to fill vacancies on their board of directors.

  VerticalNet

     Our bylaws state that our board of directors shall consist of not less than
five nor more than 11 directors and divide our board of directors into three
classes, with three-year staggered terms so that directors from a single class
are elected at each annual meeting of shareholders. This could prevent a party
who acquires control of the majority of the outstanding voting stock from
obtaining control of the board of directors. In general, our board of directors,
not our shareholders, has the right to appoint persons to fill vacancies on
their board of directors. Our shareholders may remove a director only for cause
upon the vote of a majority of the shareholders entitled to vote upon such
removal.

     Our shareholders do not have the right to cumulative voting in the election
of directors.

FIDUCIARY DUTIES OF DIRECTORS

  SierraCities

     Under Delaware corporate law, the business and affairs of a corporation are
managed by or under the direction of its board of directors. In exercising their
powers, directors are charged with a fiduciary duty of care to protect the
interests of the corporation and a fiduciary duty of loyalty to act in the best
interests of the stockholders. Under Delaware corporate law, the duty of care
requires that directors act in an informed and deliberative manner and inform
themselves, prior to making a business decision, of all material information
reasonably available to them. The duty of care also requires that directors
exercise care in overseeing and investigating the conduct of corporate
employees. The duty of loyalty may be summarized as the duty to act in good
faith, not out of self interest, and in a manner which the directors reasonably
believe to be in the best interests of the stockholders. A party challenging the
propriety of a decision of a board of directors bears the burden of rebutting
the applicability of the presumptions afforded to directors by the "business
judgment rule." If the presumption is not rebutted, the business judgment rule
attaches to protect the directors and their decisions, and their business
judgments will not be second guessed. Where, however, the presumption is
rebutted, the directors bear the burden of demonstrating the entire fairness of
the relevant transaction. Notwithstanding the foregoing, Delaware courts subject
directors' conduct to enhanced scrutiny in respect of defensive actions taken in
response to a threat to corporate control and approval of a transaction
resulting in a sale of control of the corporation.

  VerticalNet

     The fiduciary duties of directors are similar under Pennsylvania corporate
law to the duties prescribed under Delaware corporate law. Under Pennsylvania
corporate law, directors are required to discharge their duties in good faith
and in a manner reasonably believed to be in the best interests of the
corporation. They are required to use the level of care, including reasonable
inquiry, skill and diligence, that a person of ordinary prudence would use under
similar circumstances. Unlike Delaware corporate law, however, Pennsylvania
corporate law includes a provision specifically permitting directors, in
discharging their duties, to consider the effects of any action taken by them
upon any or all groups affected by such action, including shareholders,
employees, suppliers, customers and creditors of such corporation, and upon
communities in which offices or other establishments of such corporation are
located, as well as all other pertinent factors. Furthermore, unlike Delaware
corporate law, Pennsylvania corporate law also makes clear that directors have
no greater obligation to justify their activities and need not meet any higher
burden of proof in the context of a potential or proposed acquisition of control
than in any other context.

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LIABILITY OF DIRECTORS

  SierraCities

     Delaware corporate law permits a corporation to include in its certificate
of incorporation a provision limiting or eliminating the liability of its
directors to the corporation or its stockholders for monetary damages arising
from a breach of fiduciary duty, except for:

     - a breach of the duty of loyalty to the corporation or its stockholders;

     - acts or omissions not in good faith or which involve intentional
       misconduct or a knowing violation of law;

     - a declaration of a dividend or the authorization of the repurchase or
       redemption of stock in violation of Delaware corporate law; or

     - any transaction from which the director derived an improper personal
       benefit.

     The SierraCities certificate of incorporation contains a provision
eliminating the liability of its directors to the extent described.

  VerticalNet

     Our bylaws include a provision that eliminates the personal liability of
our directors for monetary damages for any action taken or the failure to take
any action as directors unless:

     - our directors have breached or failed to perform their duties required
       under Pennsylvania corporate law; and

     - the breach or failure to perform constitutes self-dealing, willful
       misconduct or recklessness.

     A Pennsylvania corporation cannot, however, eliminate personal liability
where the responsibility or liability of a director is pursuant to any criminal
statute or is for the payment of taxes pursuant to any federal, state or local
law.

     We maintain directors and officers' liability insurance to provide
directors and officers with insurance coverage for losses arising from claims
based on breaches of duty, negligence, error and other wrongful acts. At
present, there is no pending litigation or proceeding, and we are not aware of
any threatened litigation or proceeding, involving any director, officer,
employee or agent where indemnification will be required or permitted under our
articles of incorporation or bylaws.

INDEMNIFICATION OF DIRECTORS AND OFFICERS

  SierraCities

     Under Delaware corporate law, a corporation may indemnify any person
involved in a third-party action, suit or proceeding, whether civil, criminal,
administrative or investigative, by reason of being a director, officer,
employee or agent of the corporation, against expenses (including attorneys'
fees), judgments, fines and settlement amounts actually and reasonably incurred
in connection with such action, suit or proceeding or incurred by reason of such
persons being or having been a representative of the corporation, if he or she
acted in good faith and reasonably believed that his or her actions were in or
not opposed to the best interests of the corporation and, with respect to any
criminal proceeding, had no reasonable cause to believe that his or her conduct
was unlawful. Under Delaware corporate law, a corporation may indemnify any
person who was or is a party or is threatened to be made a party to any
threatened, pending or completed action or suit by or in the right of the
corporation to procure a judgment in its favor by reason of the fact that such
person is or was a director, officer, employee or agent of the corporation, or
is or was serving at the request of the corporation as a director, officer,
employee or agent of another corporation, partnership, joint venture, trust of
other enterprise against expenses, including attorney's fees, actually and
reasonably incurred by such person in connection with the defense or settlement
of such action or suit if such person acted in good faith and in a manner such
person

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<PAGE>   84

reasonably believed to be in or not opposed to the best interests of the
corporation and except that no indemnification shall be made in respect of any
claim, issue or matter as to which such person shall have been adjudged to be
liable to the corporation unless and only to the extent that the Court of
Chancery or the court in which such action or suit was brought shall determine
upon application that, despite the adjudication of liability but in view of all
the circumstances of the case, such person is fairly and reasonably entitled to
indemnity for such expenses which the Court of Chancery or such other court
shall deem proper. Delaware corporate law also provides that a corporation may
advance to a director or officer expenses incurred by him in defending any
action, upon receipt of an undertaking by the present or former director or
officer to repay the amount advanced if it is ultimately determined that he is
not entitled to indemnification. The SierraCities certificate of incorporation
provides for the advancement of expenses to an indemnified party upon receipt by
SierraCities of an undertaking by the party to repay those amounts if it is
finally determined that the indemnified party is not entitled to
indemnification. Delaware corporate law provides further that the provisions for
indemnification contained therein are nonexclusive of any other rights to which
the party may be entitled under any bylaw, agreement, vote of stockholders,
disinterested directors or otherwise. The SierraCities bylaws provide for
indemnification of any such person to the fullest extent permitted by law.

  VerticalNet

     The provisions of Pennsylvania corporate law regarding indemnification are
substantially similar to those of Delaware corporate law. Sections 1741 and 1742
of the Pennsylvania Business Corporation Law provide the power to indemnify any
officer director or other person acting in his capacity as our representative,
or is or was serving at the request of the corporation as a representative of or
corporation, partnership, joint venture, trust or other enterprise who was, is
or is threatened to, be made a party to any action or proceeding for expenses,
judgments, penalties, fines and amounts paid in settlement actually and
reasonably incurred in connection with such action or proceeding. The indemnity
provisions apply whether the action was instituted by a third party or arose by
or in our right. We are permitted to indemnify our officers and directors so
long as the indemnified person acted in good faith and in a manner he or she
presumably believed to be in, or not opposed to, our best interests and, with
respect to any criminal proceeding, had no reasonable cause to believe his or
her conduct was unlawful.

     Our bylaws provide a right to indemnification to the full extent permitted
by law for expenses, attorney's fees, damages, punitive damages, judgments,
penalties, fines and amounts paid in settlement actually and reasonably incurred
by any director or officer unless the act or failure to act giving rise to the
claim for indemnification is finally determined by binding arbitration to have
constituted willful misconduct or recklessness, to be based on the improper
receipt of a personal benefit or to be otherwise unlawful. We are obligated to
indemnify our officers and directors whether or not the indemnified liability
arises or arose from any threatened, pending or completed proceeding by or in
our right by reason of the fact that such director or officer is or was serving
as our director, officer, employee or agent or, at our request, as a director,
officer, employee, agent, fiduciary or trustee of another corporation,
partnership, joint venture, trust, employee benefit plan or other enterprise.
Our bylaws provide for the advancement of expenses to an indemnified party upon
receipt of an undertaking by the party to repay those amounts if it is finally
determined that the indemnified party is not entitled to indemnification.

     Our bylaws authorize us to take steps to ensure that all persons entitled
to the indemnification are properly indemnified, including, if the board of
directors so determines, purchasing and maintaining insurance.

ANNUAL MEETINGS

  SierraCities

     Under Delaware corporate law, if the annual meeting for the election of
directors is not held on the designated date, or action by written consent to
elect directors in lieu of an annual meeting has not been taken, the directors
are required to cause that meeting to be held as soon as is convenient. If there
is a

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<PAGE>   85

failure to hold the annual meeting or to take action by written consent to elect
directors in lieu of an annual meeting for a period of 30 days after the
designated date for the annual meeting, or if no date has been designated for a
period of 13 months after the latest to occur of the organization of the
corporation, its last annual meeting or the last action by written consent to
elect directors in lieu of an annual meeting, the Court of Chancery may
summarily order a meeting to be held upon the application of any stockholder or
director.

  VerticalNet

     Under our bylaws, our board of directors may fix the date and time of the
annual meeting of shareholders. However, if the date and time for the annual
meeting is not fixed by the board, the annual meeting for a given year shall be
held on the third Tuesday in May, or the next business day if that Tuesday is a
legal holiday. Under Pennsylvania corporate law and our bylaws, if the annual
meeting is not held within six months after the designated date, any shareholder
may call the meeting at any time thereafter.

SPECIAL MEETINGS

  SierraCities

     Under Delaware corporate law, a special meeting of the stockholders may be
called by the board of directors or any other person as may be authorized by the
certificate of incorporation or bylaws. The SierraCities certificate of
incorporation provides that special meetings of SierraCities stockholders may be
called only by the SierraCities board of directors and that only business
proposed by the board of directors may be considered at special meetings of
SierraCities stockholders.

  VerticalNet

     Under Pennsylvania corporate law, special meetings of shareholders may be
called by the board of directors, by any officers or by any other persons as
provided in the bylaws, and, unless otherwise provided in the articles, by
shareholders entitled to cast at least 20% of the votes that all shareholders
are entitled to cast at a particular meeting. Our articles of incorporation and
bylaws provide that special meetings of our shareholders may be called only by
the board or by our chairman or chief executive officer. This provision may make
it more difficult for shareholders to take action opposed by the board.

ACTION BY SHAREHOLDERS WITHOUT A MEETING

  SierraCities

     Delaware corporate law permits the stockholders of a corporation to consent
in writing to any action without a meeting, unless the certificate of
incorporation of that corporation provides otherwise, provided the consent is
signed by stockholders having at least the minimum number of votes required to
authorize that action at a meeting of stockholders at which all shares entitled
to vote thereon were present and voted. The SierraCities certificate of
incorporation does not restrict the ability of SierraCities stockholders to act
by written consent.

  VerticalNet

     Under Pennsylvania law, any action that may be taken at a meeting of the
shareholders may be taken without a meeting only if such action is authorized by
the unanimous written consent of all shareholders entitled to vote at a meeting
for such purposes.

ADVANCE NOTICE OF DIRECTOR NOMINATIONS AND SHAREHOLDER PROPOSALS

  SierraCities

     Delaware corporate law does not include a provision restricting the manner
in which nominations for directors may be made by stockholders or the manner in
which business may be brought before a meeting.

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<PAGE>   86

The SierraCities certificate of incorporation and bylaws provide that
stockholders of record at the time of notice of a meeting entitled to vote for
the election of directors may nominate persons for the board of directors
provided they comply with the advance notice procedures set forth in the
certificate of incorporation and bylaws. With respect to proposed business, the
certificate of incorporation provides that written notice of the nature of such
business must be received no later than 60 days prior to the annual meeting.

  VerticalNet

     Pennsylvania corporate law, like Delaware corporate law, does not include a
provision restricting the manner in which nominations for directors may be made
by shareholders or the manner in which business may be brought before a meeting.
Our bylaws provide nominations for election of directors may be made by any
shareholder entitled to vote for the election of directors only if written
notice of the shareholder's intent to nominate a director at the meeting is
given by the shareholder and received by the our corporate secretary:

     - for an election of directors to be held at an annual meeting of
       shareholders, 60 days prior to the anniversary date of the immediately
       preceding annual meeting of shareholders; and

     - for an election of directors to be held at a special meeting of
       shareholders, not later than the close of business on the seventh day
       following the day on which notice of the meeting was first mailed to
       shareholders or public disclosure of the special meeting is made.

     Alternatively, the shareholder may deliver the notice our corporate
secretary by certified mail, return receipt requested, which shall be deemed to
have been given only upon actual receipt. The notice shall be in writing and
shall contain or be accompanied by:

     - the name and residence of the shareholder;

     - the shareholder's representation that he is a holder of our voting stock
       and intends to appear in person or by proxy at the meeting to nominate
       the person or persons specified in the notice; and

     - the information regarding each nominee as would have been required to be
       included in a proxy statement filed pursuant to the rules and regulations
       established by the SEC had proxies been solicited with respect to the
       nominee by our management or board of directors.

     In contrast to SierraCities, our shareholders do not need to give advance
notice with respect to proposed business, other than for the election of
directors as described above.

     - a description of all arrangements or understandings among the shareholder
       and each nominee and any other person or persons under which the
       nomination or nominations are to be made by the shareholder; and

     - the consent of each nominee to serve as director if so elected.

If the chairman of the meeting determines, in good faith, that any nomination
made at the meeting was not made in accordance with these requirements, then the
nomination shall be disregarded.

CHARTER AMENDMENTS

  SierraCities

     Under Delaware corporate law, an amendment or change to the certificate of
incorporation generally requires the approval of the board of directors,
followed by the approval of such amendment by the affirmative vote of the owners
of a majority of the outstanding shares entitled to vote thereon. When an
amendment of the certificate would adversely affect the rights of a class of
stock or the rights of a series of a class, Delaware corporate law provides that
the enactment of the amendment also requires the affirmative vote of the owners
of a majority of the outstanding shares of such class or series. Delaware
corporate law generally provides that the approval of a majority of its
outstanding voting shares is required

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<PAGE>   87

to amend a corporation's certificate of incorporation. Certain provisions of the
SierraCities certificate of incorporation, however, cannot be amended without
the approval of at least 80% of the outstanding voting shares.

  VerticalNet

     Under Pennsylvania corporate law, an amendment to the articles requires the
approval of the board of directors followed by the affirmative vote of a
majority of the votes cast by all shareholders entitled to vote thereon and, if
any class or series of shares is entitled to vote thereon as a class, the
affirmative vote of a majority of the votes cast in each such class vote.
Furthermore, Pennsylvania corporate law provides that, unless otherwise provided
in the articles, an amendment of the articles of a corporation need not be
adopted by the board of directors prior to its submission to the shareholders
for approval if it is proposed by a petition of shareholders entitled to cast at
least 10% of the votes that all shareholders are entitled to cast thereon.

AMENDMENTS TO BYLAWS

  SierraCities

     Under Delaware corporate law, bylaws may be adopted, amended or repealed by
the stockholders entitled to vote thereon provided that any corporation may, in
its certificate of incorporation, confer this power upon the directors. However,
the power vested in the stockholders shall not be divested or limited where the
board of directors also has such power. The SierraCities certificate of
incorporation vests the board of directors with the authority to adopt, amend or
repeal bylaws. The SierraCities bylaws can also be adopted, amended or repealed
by a vote of not less than two thirds of the outstanding shares of SierraCities
stock then entitled to vote upon the election of directors.

  VerticalNet

     Under Pennsylvania corporate law, bylaws may be adopted, amended and
repealed by the shareholders entitled to vote thereon. This authority may be
expressly vested in the board of directors by the bylaws, subject to the power
of the shareholders to change such action, unless the subject of the amendment
is solely within the province of the shareholders. Our bylaws provide that the
vote of a majority of all directors (subject to amendments that are solely
within the province of the shareholders) or the affirmative vote of a majority
of the votes cast by all shareholders entitled to vote is required to alter,
amend or repeal our bylaws.

INTERESTED DIRECTOR OR OFFICER TRANSACTIONS

  SierraCities

     Under Delaware corporate law, some contracts or transactions in which one
or more of a corporation's directors has an interest are not void or voidable
because of such interest, provided that certain conditions, such as obtaining
the required approval and fulfilling the requirements of good faith and full
disclosure are met. Under Delaware corporate law, the conditions are that either
(1) the stockholders or the disinterested directors must approve any such
contract or transaction after the full disclosure of material facts, or (2) the
contract or transaction must have been fair as to the corporation at the time it
was approved. Under Delaware corporate law, if board approval is sought, the
contract or transactions must be approved by a majority of the disinterested
directors (even though less than a quorum).

  VerticalNet

     Similarly, under Pennsylvania corporate law, a transaction between a
corporation and an interested director or officer will not be void or voidable
solely for that reason if (1) the board of directors knows about the director's
or officer's interest and authorized the transaction by the affirmative vote of
a majority of the disinterested directors, even though the disinterested
directors are less than a quorum, (2) the shareholders entitled to vote thereon
know about the director's or officer's, interest and the contract is
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specifically approved in good faith by vote of those shareholders or (3) the
transaction is fair to the corporation of the time it is authorized, approved or
ratified by the board of directors or the shareholders.

SHAREHOLDER DERIVATIVE SUITS

  SierraCities

     Under Delaware corporate law, a stockholder may only bring a derivative
action on behalf of the corporation if the stockholder was a stockholder of the
corporation at the time of the transaction in question or his or her stock
thereafter devolved upon him or her by operation of law.

  VerticalNet

     Pennsylvania corporate law provides that, in any action or proceeding
brought to enforce a secondary right on the part of one or more shareholders of
a corporation against any present or former officer or director of the
corporation because the corporation refuses to enforce rights that may properly
be asserted by it, each plaintiff must aver and it must be made to appear that
each plaintiff was a shareholder of the corporation or owner of a beneficial
interest in the shares at the time of the transaction of which he complains, or
that his shares or beneficial interest in the shares devolved upon him by
operation of law from a person who was a shareholder or owner of a beneficial
interest in the shares at that time. However, any shareholder who otherwise
would be entitled to maintain the action or proceeding and who does not meet
such requirement may, nevertheless, in the discretion of the court, be allowed
to maintain the action or proceeding on preliminary showing to the court, by
application and upon such verified statements and depositions as may be required
by the court, that there is a strong prima facie case in favor of the claim
asserted on behalf of the corporation and that without the action serious
injustice will result. In any action or proceeding instituted or maintained by
holders or owners of less than 5% of the outstanding shares of any class of the
corporation, unless the shares held or owned by the holders or owners have an
aggregate fair market value in excess of $200,000, the corporation in whose
right the action or proceeding is brought will be entitled to require the
plaintiffs to give security for the reasonable expenses, including attorneys'
fees, that may be incurred by it in connection therewith or for which it may
become liable in connection with mandatory indemnification, to which security
the corporation will have recourse in such amount as the court determines upon
the termination of the action or proceeding.

MERGERS AND MAJOR TRANSACTIONS

  SierraCities

     Under Delaware corporate law, whenever the approval of the stockholders of
a corporation is required for an agreement of merger or consolidation or for a
sale, lease or exchange of all or substantially all of its assets, such
agreement, sale, lease or exchange must be approved by the affirmative vote of
the owners of a majority of the outstanding shares entitled to vote thereon. The
SierraCities certificate of incorporation provides that the affirmative vote of
at least two thirds of the SierraCities shares entitled to vote on or approve
any of the following proposed transactions shall be required to approve any of
the following transactions: (a) a merger or consolidation in which SierraCities
shall not be the surviving entity or shall survive only as a subsidiary of an
entity; (b) a sale, lease or exchange or an agreement to sell, lease or exchange
all or substantially all of the assets of SierraCities to any other person or
entity; or (c) the dissolution or liquidation of SierraCities. Notwithstanding
the foregoing, under Delaware law, unless required by its certificate of
incorporation, no vote of the stockholders of a constituent corporation
surviving a merger is necessary to authorize a merger if:

     - the agreement of merger does not amend in any respect the certificate of
       incorporation of such constituent corporation;

     - each share of stock of the constituent corporation outstanding
       immediately prior to the merger is to be an identical outstanding or
       treasury share of the surviving corporation after the merger; and

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     - either no shares of common stock of the surviving corporation and no
       shares, securities or obligations convertible into the common stock are
       to be issued under such agreement of merger, or the number of shares of
       common stock issued or so issuable does not exceed 20% of the number
       thereof outstanding immediately prior to the merger.

     In addition, Delaware corporate law provides that a parent corporation that
is the record holder of at least 90% of the outstanding shares of each class of
stock of a subsidiary may merge the subsidiary into the parent corporation
without the approval of the subsidiary's stockholders or board of directors and
without the approval of the parent's stockholders.

  VerticalNet

     Under Pennsylvania corporate law, shareholder approval is required for the
sale, lease, exchange or other disposition of all, or substantially all, of the
property and assets of a corporation when not made in the usual and regular
course of the business of the corporation or for the purpose of relocating the
business of the corporation or in connection with the dissolution or liquidation
of the corporation. Unlike Delaware corporate law, however, in cases where
shareholder approval is required, a merger, consolidation, sale, lease, exchange
or other disposition must be approved by a majority of the votes cast by all
shareholders entitled to vote thereon. Under Pennsylvania corporate law, unless
required by the bylaws of a constituent corporation, shareholder approval is not
required for a plan of merger or consolidation if:

     - the surviving or new corporation is a domestic corporation whose articles
       are identical to the articles of the constituent corporation;

     - each share of the constituent corporation outstanding immediately prior
       to the merger or consolidation will continue as or be converted into,
       except as otherwise agreed to by the holder thereof, an identical share
       of the surviving or new corporation; and

     - the plan provides that the shareholders of the constituent corporation
       will hold in the aggregate shares of the surviving or new corporation
       having a majority of the votes entitled to be cast generally in an
       election of directors.

     In addition, Pennsylvania corporate law provides that no shareholder
approval is required if, prior to the adoption of the plan, another corporation
that is a party to such equity plan owns 80% or more of the outstanding shares
of each class of such constituent corporation.

DISSENTERS' RIGHTS OF APPRAISAL

  SierraCities

     Under Delaware corporate law, unless the certificate of incorporation of a
corporation provides otherwise, there are no appraisal rights provided in the
case of certain mergers, a sale or transfer of all or substantially all of its
assets or an amendment to the corporation's certificate of incorporation.
Moreover, Delaware corporate law does not provide appraisal rights in connection
with a merger or consolidation, unless the certificate of incorporation provides
otherwise, to the owners of shares of a corporation that, at the record date
fixed to determine the stockholders entitled to receive notice of and to vote at
the meeting of stockholders to act upon the merger or consolidating agreements,
is either:

     - listed on a national securities exchange or designated as a national
       market system security by the National Association of Securities Dealers,
       Inc.;

     - held of record by more than 2,000 stockholders, unless the applicable
       agreement of merger or consolidation requires the owners of these shares
       to receive, in exchange for these shares, anything other than shares of
       stock of the resulting or surviving corporation; or

     - shares of stock of any other corporation listed on a national securities
       exchange, designated as described above, or held of record by more than
       2,000 holders.

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     In addition, Delaware corporate law denies appraisal rights to the
stockholders of the surviving corporation in a merger if that merger did not
require for its approval the vote of the stockholders of the surviving
corporation.

     DISSENTER'S RIGHTS MAY BE AVAILABLE TO SIERRACITIES STOCKHOLDERS IN
CONNECTION WITH THE MERGER. SEE "THE OFFER -- PURPOSE OF THE OFFER; THE MERGER;
APPRAISAL RIGHTS -- APPRAISAL RIGHTS" ON PAGE 49.

  VerticalNet

     Pennsylvania corporate law provides that shareholders of a corporation have
a right of appraisal with respect to specified corporate actions, including:

     - a plan of merger, consolidation, division, as defined in Section 1951 of
       the Pennsylvania Business Corporation Law, or share exchange or
       conversion, as defined in Section 1961 of the Pennsylvania Business
       Corporation Law;

     - other plans or amendments to its articles in which disparate treatment is
       given to the holders of shares of the same class or series; and

     - a sale, lease, exchange or other disposition of all or substantially all
       of the corporation's property and assets, except if such sale, lease,
       exchange or other disposition is:

        - made in connection with the dissolution or liquidation of the
          corporation;

        - the acquiring corporation owns all of the outstanding shares of the
          acquired corporation or the voting rights, preferences, limitations or
          relative rights of the acquired corporation are not altered thereby;
          or

        - the assets sold, leased, exchanged or otherwise disposed of are
          simultaneously leased back to the corporation.

     Under Pennsylvania corporate law, appraisal rights are not provided,
however, to the holders of shares of any class that is either listed on a
national securities exchange or held of record by more than 2,000 shareholders
unless:

     - such shares are not converted solely into shares of the acquiring,
       surviving, new or other corporation and cash in lieu of fractional
       shares;

     - such shares constitute a preferred or special class of stock, and the
       articles of such corporation, the corporate action under consideration or
       the express terms of the transaction encompassed in such corporate action
       do not entitle all holders of the shares of such class to vote thereon
       and the transaction requires for the adoption thereof the affirmative
       vote of a majority of the votes cast by all shareholders of such class;
       or

     - such shares constitute a group of a class or series that are to receive
       the same special treatment in the corporate action under consideration,
       and the holders of such group are not entitled to vote as a special class
       in respect of such corporate action.

ANTI-TAKEOVER PROVISIONS

  SierraCities

     Section 203 of the Delaware General Corporation Law restricts the ability
of certain persons to acquire control of a Delaware corporation that is publicly
traded. Under Delaware corporate law, a corporation is prohibited from engaging
in any business combination with an interested stockholder who,

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together with his affiliates or associates owns, or within a three-year period
did own, 15% or more of the corporation's voting stock, unless:

     - prior to the time the stockholder became an interested stockholder, the
       board of directors approved either the business combination or the
       transaction which resulted in the stockholder becoming an interested
       stockholder;

     - the interested stockholder owned at least 85% of the voting stock of the
       corporation, excluding specified shares, upon consummation of the
       transaction which resulted in the stockholder becoming an interested
       stockholder; or

     - on or subsequent to the time the stockholder became an interested
       stockholder, the business combination is approved by the board of
       directors of the corporation and authorized by the affirmative vote, at
       an annual or special meeting and not by written consent, by at least
       66 2/3% of the outstanding voting shares of that corporation, excluding
       shares held by that interested stockholder.

     A business combination generally includes:

     - mergers, consolidations and sales or other dispositions of 10% or more of
       the assets of a corporation to or with an interested stockholder;

     - certain transactions resulting in the issuance or transfer to an
       interested stockholder of any stock of the corporation or its
       subsidiaries; and

     - other transactions resulting in a disproportionate financial benefit to
       an interested stockholder.

     The SierraCities certificate of incorporation authorizes its board of
directors, without any action by the stockholders of SierraCities, to issue up
to 1,000,000 shares of its preferred stock, in one or more series and to
determine the voting rights (including the right to vote as a series on
particular matters), preferences as to dividends and in liquidation and the
conversion and other rights of each such series. Because the terms of the
preferred stock may be fixed by the SierraCities board of directors without
stockholder action, the preferred stock could be issued quickly with terms
designed to make more difficult a proposed takeover of SierraCities or the
removal of its management.

     SierraCities has represented to us in the merger agreement that all actions
necessary to ensure that Section 203 of the Delaware General Corporation Law
does not apply to us in connection with the offer, the merger and the other
transactions contemplated by the merger agreement and the tender agreement have
been taken.

  VerticalNet

     Pennsylvania corporate law contains provisions applicable to publicly-held
Pennsylvania corporations that may be deemed to have an anti-takeover effect.

     Under Section 1715 of the Pennsylvania Business Corporation Law, directors
of a corporation are not required to regard the interests of the shareholders as
being dominant or controlling in considering the best interests of the
corporation. The directors may consider, to the extent they deem appropriate,
such factors as:

     - the effects of any action upon any group affected by that action,
       including shareholders, employees, suppliers, customers and creditors of
       the corporation and upon communities in which offices or other
       establishments of the corporation are located;

     - the short term and long term interests of the corporation, including
       benefits that may accrue to the corporation from its long term plans and
       the possibility that these interests may be best served by the continued
       independence of the corporation;

     - the resources, intent and conduct of any person seeking to acquire
       control of the corporation; and

                                       81
<PAGE>   92

     - all other pertinent factors.

     Pennsylvania corporate law also provides directors with broad discretion
with respect to actions that may be taken in response to acquisitions or
proposed acquisitions of corporate control.

     Section 1715 of the Pennsylvania Business Corporation Law further provides
that any act of our board of directors, a committee of the board or an
individual director relating to or affecting an acquisition or potential or
proposed acquisition of control to which a majority of our disinterested
directors have assented will be presumed to satisfy the standard of care set
forth under Pennsylvania corporate law, unless it is proven by clear and
convincing evidence that our disinterested directors did not consent to such act
in good faith after reasonable investigation. As a result of this and the other
provisions of Section 1715 of the Pennsylvania Business Corporation Law, our
board of directors are provided with broad discretion with respect to actions
that may be taken in response to acquisitions or proposed acquisitions of
corporate control.

     Section 1715 of the Pennsylvania Business Corporation Law may discourage
open market purchases of our common stock or a non-negotiated tender or exchange
offer for our common stock and, accordingly, may be considered disadvantageous
by a shareholder who would desire to participate in any such transaction. In
addition, Section 1715 of the Pennsylvania Business Corporation Law may have a
depressive effect on the price of our common stock.

     In addition, the ability of our board of directors to establish the rights
of, and to issue, substantial amounts of preferred stock without the need for
shareholder approval, may have the effect of discouraging, delaying or
preventing a change in control. Our preferred stock, among other things, may be
used to create voting impediments with respect to any changes in control or to
dilute the stock ownership of holders of common stock seeking to obtain control.

     Generally, subchapters 25E, F, G, H, I and J of the Pennsylvania Business
Corporation Law place procedural requirements and establish restrictions upon
the acquisition of voting shares of a corporation which would entitle the
acquiring person to cast or direct the casting of a specified percentage of
votes in an election of directors. Subchapter 25E of the Pennsylvania Business
Corporation Law provides generally that, if a company were involved in a
"control transaction," shareholders of the company would have the right to
demand from a "controlling person or group" payment of the fair value of their
shares. For purposes of Subchapter 25E, a "controlling person or group" is a
person or group of persons acting in concert that, through voting shares, has
voting power over at least 20% of the votes which shareholders of the company
would be entitled to cast in the election of directors. A control transaction
arises, in general, when a person or group acquires the status of a controlling
person or group.

     In general, Subchapter 25F of the Pennsylvania Business Corporation Law
delays for five years and imposes conditions upon "business combinations"
between an "interested shareholder" and us. The term "business combination" is
defined broadly to include various merger, consolidation, division, exchange or
sale transactions, including transactions utilizing our assets for purchase
price amortization or refinancing purposes. An "interested shareholder," in
general, would be a beneficial owner of at least 20% of our voting shares.

     In general, Subchapter 25G of the Pennsylvania Business Corporation Law
suspends the voting rights of the "control shares" of a shareholder that
acquires for the first time 20% or more, 33 1/3% or more, or 50% or more of a
company's shares entitled to be voted in an election of directors. The voting
rights of the control shares generally remain suspended until such time as the
"disinterested" shareholders of the company vote to restore the voting power of
the acquiring shareholder.

     Subchapter 25H of the Pennsylvania Business Corporation Law provides in
certain circumstances for the recovery by a company of profits made upon the
sale of its common stock by a "controlling person or group" if the sale occurs
within 18 months after the controlling person or group became such and the

                                       82
<PAGE>   93

common stock was acquired during such 18 month period or within 24 months before
such period. In general, for purposes of Subchapter 25H, a "controlling person
or group" is a person or group that:

          (1) has acquired;

          (2) offered to acquire; or

          (3) publicly disclosed or caused to be disclosed an intention to
              acquire voting power over shares that would entitle such person or
              group to cast at least 20% of the votes that shareholders of the
              company would be entitled to cast in the election of directors.

     If the disinterested shareholders of a company vote to restore the voting
power of a shareholder who acquires control shares subject to Subchapter 25G,
such company would then be subject to subchapters 25I and J of the Pennsylvania
Business Corporation Law. Subchapter 25I generally provides for a minimum
severance payment to certain employees terminated within two years of such
approval. Subchapter 25J, in general, prohibits the abrogation of certain labor
contracts prior to their stated date of expiration.

     The above descriptions of subchapters of Pennsylvania corporate law
summarize the material anti-takeover provisions contained in Pennsylvania
corporate law but are not a complete discussion of those provisions.

DISSOLUTION

  SierraCities

     Under Delaware corporate law, if the board of directors of the corporation
deems it advisable that the corporation should be dissolved and a majority of
the outstanding stock of the corporation entitled to vote thereon votes in favor
of the proposed dissolution, the corporation shall be dissolved upon the filing
of a certificate of dissolution with the Secretary of State of the State of
Delaware. The corporation shall continue after dissolution for the purposes of
defending suits and settling its affairs for a three-year period. Delaware
corporate law sets forth payment and distribution procedures a dissolving
corporation must follow in connection with winding up its affairs. Such
procedures include notification requirements and, under specified circumstances,
obtaining the approval of the Delaware Court of Chancery. Under Delaware
corporate law, directors of a dissolved corporation that comply with the payment
and distribution procedures provided therein shall not be personally liable to
the claimants of the dissolved corporation.

  VerticalNet

     Under Pennsylvania corporate law, if the board of directors adopts a
resolution recommending that the corporation be dissolved, the shareholders must
adopt the resolution by the affirmative vote of a majority of the votes cast by
all shareholders entitled to vote. Unlike Delaware corporate law, Pennsylvania
corporate law provides two different procedures for the corporation to provide
for the winding up and distribution of the corporation's assets. The board of
directors of the corporation may elect that the dissolution shall proceed under
Subchapter H or under Section 1975 of the Pennsylvania Business Corporation Law.
Under Section 1975, the corporation must provide for the liabilities of the
corporation prior to filing the articles of dissolution in the Pennsylvania
Department of State. Directors of corporations that elect to follow this
procedure are held to the standard of care that applies to all of their other
duties. The Subchapter H provision is largely analogous to the procedure under
Delaware corporate law. Under Pennsylvania corporate law, however, the
corporation only continues to exist for the purpose of settling its affairs for
a period of two years. Furthermore, the court in determining the amount of
security that shall be posted by the dissolved corporation shall consider the
amount that would be reasonably likely to be sufficient to provide compensation
for claims that are unknown but that are likely to arise or become known for a
period of only two years after the dissolution of the corporation.

     Upon a dissolution or liquidation of VerticalNet, holders of our common
stock shall share ratably in any distribution of our remaining assets after
payment in full of amounts owed to our creditors and

                                       83
<PAGE>   94

amounts to which the holders of our Series A preferred stock and any other
preferred shareholders are entitled pursuant to a liquidation preference.

SHAREHOLDER RIGHTS PLAN

  SierraCities

     SierraCities entered into a Rights Agreement dated as of December 30, 1998
between SierraCities and Harris Trust and Savings Bank, as rights agent,
pursuant to which SierraCities has issued rights, exercisable only upon the
occurrence of certain events, to purchase its preferred stock. SierraCities has
amended the Rights Agreement so that it will not apply to our tender offer or
the associated merger.

  VerticalNet

     We do not have a shareholder rights plan.

                                       84
<PAGE>   95

                                 LEGAL MATTERS

     The legality of our common stock offered by this prospectus will be passed
upon by James W. McKenzie, Jr., senior vice president, general counsel and
secretary of VerticalNet. Mr. McKenzie is paid a salary by VerticalNet, is a
participant in various employee benefit plans offered to employees of
VerticalNet generally and owns and has options to purchase shares of our common
stock.

     Cooley Godward LLP, Boulder, Colorado, acted as counsel to VerticalNet in
connection with the merger agreement.

                                    EXPERTS

     The consolidated financial statements and schedule of VerticalNet, Inc. as
of December 31, 1998 and 1999, and for each of the years in the three-year
period ended December 31, 1999, have been incorporated by reference herein and
in the registration statement in reliance upon the reports of KPMG LLP,
independent certified public accountants, incorporated by reference herein, and
upon the authority of said firm as experts in accounting and auditing.

     The financial statements of SierraCities.com Inc. incorporated by reference
in this prospectus and elsewhere in the registration statement have been audited
by Arthur Andersen LLP, independent public accountants, as indicated in their
reports with respect thereto, and are included herein in reliance upon the
authority of said firm as experts in accounting and auditing in giving said
reports.

     The financial statements of NECX Exchange, LLC incorporated by reference in
this prospectus and elsewhere in the registration statement, to the extent and
for the periods indicated in their report, have been audited by Arthur Andersen
LLP, independent public accountants, and are incorporated by reference herein in
reliance upon the authority of said firm as experts in giving said report.

     The financial statements of Tradeum Inc. incorporated by reference in this
prospectus and elsewhere in the registration statement, to the extent and for
the periods indicated in their report, have been audited by Kost Forer & Gabbay,
a member of Ernst & Young International, independent public accountants, and are
incorporated by reference herein in reliance upon the authority of said firm as
experts in giving said report.

     The financial statements of R.W. Electronics, Inc. incorporated by
reference in this prospectus and elsewhere in the registration statement, to the
extent and for the periods indicated in their report, have been audited by
Tonneson & Company CPAs PC, independent public accountants, and are incorporated
by reference herein in reliance upon the authority of said firm as experts in
giving said report.

                                       85
<PAGE>   96

                                                                      SCHEDULE I

                DIRECTORS AND EXECUTIVE OFFICERS OF VERTICALNET

     The name, age, business address, present principal occupation or employment
and five-year employment history of each of the directors and executive officers
of VerticalNet are set forth below. Unless otherwise indicated, each occupation
set forth opposite an individual's name refers to employment with VerticalNet
and each individual has held such occupation for at least the last five years.
Each director and executive officer listed below is a citizen of the United
States of America. Unless otherwise indicated below, the business address of
each person is c/o VerticalNet, Inc., 700 Dresher Road, Horsham, Pennsylvania
19044.

           DIRECTORS (INCLUDING EXECUTIVE OFFICERS WHO ARE DIRECTORS)

<TABLE>
<CAPTION>
NAME                                   AGE   PRESENT PRINCIPAL OCCUPATION OR EMPLOYMENT; FIVE-YEAR EMPLOYMENT HISTORY
----                                   ---   ------------------------------------------------------------------------
<S>                                    <C>   <C>
Douglas A. Alexander.................  39    Director since 1997. Vice-chairman of the board of VerticalNet since
                                             July 2000. Prior thereto, he was chairman of the board of VerticalNet
                                             from 1997 to July 2000. He is President and CEO of ICG Europe. He
                                             co-founded Reality Online, Inc. in 1986 and later sold it to Reuters in
                                             1994. He served as president and chief executive officer of Reality
                                             Online after its acquisition until September 1997.
Jeffrey C. Ballowe...................  45    Director since July 1998. He retired in 1998 from Ziff-Davis, Inc.
                                             where, during 11 years at the company, he held several magazine
                                             publishing roles. At the time of his retirement from Ziff-Davis, he was
                                             President, Interactive Media and Development Group, in charge of ZD's
                                             Internet publications, ZDNet, ZDTV, and all development at the company.
                                             Prior to joining ZD, he worked as a marketing executive at various
                                             technology and marketing services companies. Mr. Ballowe also serves as
                                             a director on the boards of Jupiter Communications, Inc., NBC Internet,
                                             Inc. and Onvia.com, Inc.
Walter W. Buckley III................  40    Director since 1996. He is co-founder, president and chief executive
                                             officer Internet Capital Group, Inc. He is also a member of Internet
                                             Capital Group's Office of the President and board of directors. Prior to
                                             Internet Capital Group, he served as vice president of acquisitions for
                                             Safeguard Scientifics, Inc. from 1991 to 1996. Prior to Safeguard, he
                                             was president and co-founder of Centralized Management Systems, Inc., a
                                             medical supply company, which he sold in 1987. He is also a member of
                                             the boards of directors of Safeguard Scientifics, Inc. and Breakaway
                                             Solutions, Inc.
Joseph Galli, Jr.....................  41    Director since July 2000. President and chief executive officer of
                                             VerticalNet since July 2000. He served as president and chief operating
                                             officer of Amazon.com, Inc. from June 1999 to July 2000. From 1980 until
                                             June 1999, he held a variety of positions with The Black and Decker
                                             Corporation, culminating as president of Black and Decker's Worldwide
                                             Power Tools and Accessories.
Michael J. Hagan.....................  37    Director since 1995. Executive vice president and chief operating
                                             officer of VerticalNet. Prior to founding VerticalNet, Mr. Hagan was
                                             vice president and senior manager at Merrill Lynch Asset Management from
                                             1990 to 1995.
</TABLE>

                                       S-1
<PAGE>   97

<TABLE>
<CAPTION>
NAME                                   AGE   PRESENT PRINCIPAL OCCUPATION OR EMPLOYMENT; FIVE-YEAR EMPLOYMENT HISTORY
----                                   ---   ------------------------------------------------------------------------
<S>                                    <C>   <C>
Howard D. Ross.......................  48    Director since June 2000. He is a founding partner of LLR Equity
                                             Partners, L.P. Prior thereto he spent 26 years with Arthur Andersen LLP
                                             and served as partner in charge of Arthur Andersen LLP's Growth Company
                                             Practice in the Mid-Atlantic region.
Satya Nadella........................  33    Director since October 2000. Since June 2000, he has been Vice
                                             President, Microsoft bCentral, at Microsoft Corporation. Prior to being
                                             appointed vice president, he held a variety of marketing, product
                                             development and general management positions with Microsoft.
Mark L. Walsh........................  46    Director since August 1997. Chairman of the board of VerticalNet. He was
                                             president and chief executive officer of VerticalNet from August 1997 to
                                             July 2000. He served as senior vice president and corporate officer at
                                             America Online, Inc. from 1995 to 1997. He founded and managed AOL
                                             Enterprise, the business-to-business division of AOL. He was president
                                             of GEnie, General Electric's online service from 1994 to 1995 and
                                             president of Information Kinetics, Inc., a venture capital backed
                                             interactive information company focusing on the recruitment and
                                             classified advertising market from 1993 to 1994.
</TABLE>

                    EXECUTIVE OFFICERS WHO ARE NOT DIRECTORS

<TABLE>
<CAPTION>
NAME AND BUSINESS ADDRESS              AGE   PRESENT PRINCIPAL OCCUPATION OR EMPLOYMENT; FIVE-YEAR EMPLOYMENT HISTORY
-------------------------              ---   ------------------------------------------------------------------------
<S>                                    <C>   <C>
Gene S. Godick.......................  35    Executive vice president since July 2000 and chief financial officer
                                             since June 1998. He was previously senior vice president from October
                                             1999 to July 2000. Prior thereto, he worked from 1997 until 1998 as a
                                             senior manager at KPMG LLP, where he worked in their information,
                                             communications and entertainment practice, with a focus on high
                                             technology companies. During 1997, prior to joining KPMG LLP, Mr. Godick
                                             provided consulting services advising companies on financing and
                                             turnaround strategies. Prior to such time, Mr. Godick was hired in early
                                             1994 as chief financial officer of Industrial Construction, Inc., a
                                             privately owned environmental remediation firm, and served as its
                                             president and chief financial officer from 1996 until 1997. From 1987
                                             until 1994, Mr. Godick was an accountant and manager for Arthur Andersen
                                             LLP's Enterprise Group, which provided services to emerging growth
                                             companies in high technology, biotechnology and software. Mr. Godick
                                             serves on the boards of directors of Novasoft Information Technology
                                             Corp. and Internos Corporation.
</TABLE>

                                       S-2
<PAGE>   98

<TABLE>
<CAPTION>
NAME AND BUSINESS ADDRESS              AGE   PRESENT PRINCIPAL OCCUPATION OR EMPLOYMENT; FIVE-YEAR EMPLOYMENT HISTORY
-------------------------              ---   ------------------------------------------------------------------------
<S>                                    <C>   <C>
David Kostman........................  35    President, VerticalNet International since July 2000. From 1994 to July
                                             2000, Mr. Kostman worked at Lehman Brothers' Investment Banking
                                             Division. Mr. Kostman left Lehman Brothers as a Managing Director, head
                                             of the Internet B2B Group and responsible for coverage of Israeli
                                             technology companies. From 1992 to 1994, Mr. Kostman was an investment
                                             banker at N M Rothschild & Sons in London, focusing on Latin American
                                             mergers & acquisitions and privatizations. Mr. Kostman is Chairman of
                                             VerticalNet Europe B.V. and serves on the board of directors of
                                             VerticalNet Japan and Utopy Inc.
James W. McKenzie, Jr................  41    Senior vice president, general counsel and secretary since January 2000.
                                             From October 1995 to January 2000, he was a partner of Morgan, Lewis &
                                             Bockius LLP. Between October 1987 and September 1995, Mr. McKenzie was
                                             an associate of Morgan, Lewis & Bockius LLP.
</TABLE>

                                       S-3
<PAGE>   99

                                                                         ANNEX A

                          AGREEMENT AND PLAN OF MERGER

                                     AMONG

                               VERTICALNET, INC.,

                           TRUCKEE ACQUISITION CORP.

                                      AND

                             SIERRACITIES.COM INC.

                          DATED AS OF NOVEMBER 6, 2000
<PAGE>   100

                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                              PAGE
                                                              ----
<S>                                                           <C>
ARTICLE I THE OFFER.........................................   A-1
  Section 1.1  The Offer....................................   A-1
  Section 1.2  Company Action...............................   A-3
  Section 1.3  Directors....................................   A-4

ARTICLE II THE MERGER.......................................   A-4
  Section 2.1  The Merger...................................   A-4
  Section 2.2  Effect of the Merger.........................   A-5
  Section 2.3  Closing......................................   A-5
  Section 2.4  Consummation of the Merger...................   A-5
  Section 2.5  Certificate of Incorporation; By-Laws;
     Directors and Officers.................................   A-5
  Section 2.6  Effect on Capital Stock......................   A-5
  Section 2.7  Exchange of Certificates.....................   A-5
  Section 2.8  Stock Options................................   A-7
  Section 2.9  Dissenting Shares............................   A-7
  Section 2.10 Adjustment of Exchange Ratio.................   A-8

ARTICLE III REPRESENTATIONS AND WARRANTIES OF THE COMPANY...   A-8
  Section 3.1  Organization and Qualification...............   A-8
  Section 3.2  Subsidiaries.................................   A-8
  Section 3.3  Authority Relative to Agreements.............   A-9
  Section 3.4  Non-Contravention............................   A-9
  Section 3.5  Capitalization...............................  A-10
  Section 3.6  SEC Filings..................................  A-10
  Section 3.7  Financial Statements.........................  A-10
  Section 3.8  Absence of Certain Changes or Events.........  A-11
  Section 3.9  Governmental Approvals.......................  A-11
  Section 3.10 Compliance with Laws; No Default.............  A-11
  Section 3.11 Information Supplied.........................  A-12
  Section 3.12 Litigation...................................  A-12
  Section 3.13 Intellectual Property Rights.................  A-12
  Section 3.14 Taxes........................................  A-13
  Section 3.15 Employee Benefit Plans.......................  A-15
  Section 3.16 Environmental Matters........................  A-16
  Section 3.17 State Takeover Statutes; Rights Agreement....  A-16
  Section 3.18 Opinion of Financial Advisor.................  A-17
  Section 3.19 Brokers......................................  A-17
  Section 3.20 Beneficial Interests in Trusts...............  A-17
  Section 3.21 Leasing Contracts............................  A-17
  Section 3.22 Warehouse Lines..............................  A-17
  Section 3.23 Securitization Transactions..................  A-18
  Section 3.24 Leasing-Contract-Level Representations and
     Warranties.............................................  A-18
  Section 3.25 No Recourse..................................  A-18
  Section 3.26 Sufficiency of and Title to Assets...........  A-18
  Section 3.27 Properties; Leases; Tangible Assets..........  A-19
  Section 3.28 Contracts....................................  A-20
  Section 3.29 Related Party Transactions...................  A-21
</TABLE>

                                       A-i
<PAGE>   101

<TABLE>
<CAPTION>
                                                              PAGE
                                                              ----
<S>                                                           <C>
  Section 3.30 Balance Sheet Transactions...................  A-21
  Section 3.31 Lease Portfolio Transactions.................  A-21
  Section 3.32 Inapplicability of Section 2115 of California
     Corporations Code......................................  A-21
  Section 3.33 Certain Business Practices...................  A-21
  Section 3.34 Insurance....................................  A-21

ARTICLE IV REPRESENTATIONS AND WARRANTIES OF PARENT AND
  ACQUISITION...............................................  A-22
  Section 4.1  Organization and Qualification...............  A-22
  Section 4.2  Authorization of Agreement,
     Non-Contravention, Etc. ...............................  A-22
  Section 4.3  Capitalization...............................  A-23
  Section 4.4  SEC Filings..................................  A-23
  Section 4.5  Financial Statements.........................  A-23
  Section 4.6  Absence of Certain Changes or Events.........  A-23
  Section 4.7  Parent Shares................................  A-24
  Section 4.8  Information Supplied.........................  A-24
  Section 4.9  Reorganization...............................  A-24
  Section 4.10 Operations and Assets of Acquisition.........  A-24
  Section 4.11 Brokers......................................  A-24

ARTICLE V CERTAIN AGREEMENTS................................  A-24
  Section 5.1  Conduct of the Company's Business............  A-24
  Section 5.2  Conduct of Parent's Business.................  A-26
  Section 5.3  Stockholder Approval; Preparation of Proxy
     Statement..............................................  A-26
  Section 5.4  Access to Information........................  A-27
  Section 5.5  Further Actions..............................  A-27
  Section 5.6  Inquiries and Negotiations...................  A-28
  Section 5.7  Notification of Certain Matters, Etc. .......  A-29
  Section 5.8  Indemnification..............................  A-30
  Section 5.9  Employee Benefits............................  A-30
  Section 5.10 Section 16 Matters...........................  A-31
  Section 5.11 Tax Treatment................................  A-31
  Section 5.12 Affiliate Letters............................  A-31
  Section 5.13 Balance Sheet Transactions...................  A-32
  Section 5.14 Lease Portfolio Liquidation..................  A-32
  Section 5.15 FIRPTA Matters...............................  A-32

ARTICLE VI CONDITIONS TO THE MERGER.........................  A-32
  Section 6.1  Conditions to the Obligations of the
     Parties................................................  A-32

ARTICLE VII TERMINATION AND ABANDONMENT.....................  A-32
  Section 7.1  Termination and Abandonment..................  A-32
  Section 7.2  Effect of Termination........................  A-33

ARTICLE VIII MISCELLANEOUS..................................  A-33
  Section 8.1  Nonsurvival of Representations and
     Warranties.............................................  A-33
  Section 8.2  Expenses, Etc. ..............................  A-33
  Section 8.3  Publicity....................................  A-34
  Section 8.4  Execution in Counterparts....................  A-34
  Section 8.5  Notices......................................  A-35
  Section 8.6  Waivers......................................  A-35
  Section 8.7  Entire Agreement.............................  A-36
</TABLE>

                                      A-ii
<PAGE>   102

<TABLE>
<CAPTION>
                                                              PAGE
                                                              ----
<S>                                                           <C>
  Section 8.8  Applicable Law...............................  A-36
  Section 8.9  Binding Effect, Benefits.....................  A-36
  Section 8.10 Assignability................................  A-36
  Section 8.11 Amendments...................................  A-36
  Section 8.12 Interpretation...............................  A-36
</TABLE>

                                      A-iii
<PAGE>   103

                          AGREEMENT AND PLAN OF MERGER

     AGREEMENT AND PLAN OF MERGER (the "Agreement"), dated as of November 6,
2000, among VERTICALNET, INC., a Pennsylvania corporation ("Parent"), TRUCKEE
ACQUISITION CORP., a Delaware corporation and a wholly owned subsidiary of
Parent ("Acquisition"), and SIERRACITIES.COM INC., a Delaware corporation (the
"Company").

     WHEREAS, the Boards of Directors of the Company, Parent and Acquisition
each has, in light of and subject to the terms and conditions hereof, (i)
determined that a business combination between Parent and the Company is fair to
their respective stockholders and in the best interests of such stockholders and
(ii) accordingly has approved an exchange offer (the "Offer") as described
herein and a merger (the "Merger") of Acquisition with and into the Company,
with the Company as the surviving corporation (the "Surviving Corporation"),
upon the terms and subject to the conditions hereof.

     WHEREAS, for Federal income tax purposes, it is intended that the Offer and
the Merger shall be treated as an integrated transaction (together, the
"Transaction") and shall constitute a "reorganization" within the meaning of
Section 368(a) of the Internal Revenue Code of 1986, as amended (the "Code") and
the parties hereto adopt this Agreement as a "plan of reorganization" within the
meaning of Sections 1.368-2(g) and 1.368-3(a) of the United States Income Tax
Regulations.

     WHEREAS, simultaneously with the execution and delivery of this Agreement
and as a condition and inducement to the willingness of Parent and Acquisition
to enter into this Agreement, Parent and certain stockholders of the Company
(the "Stockholders") are entering into agreements (the "Tender Agreements")
pursuant to which the Stockholders will agree to tender for exchange all of
their Shares in the Offer, to vote to adopt and approve this Agreement and to
take certain other actions in furtherance of the transactions contemplated by
this Agreement upon the terms and subject to the conditions set forth in the
Tender Agreements.

     NOW, THEREFORE, in consideration of the premises and the representations,
warranties, covenants and agreements herein contained, and intending to be
legally bound hereby, the Company, Parent and Acquisition hereby agree as
follows:

                                   ARTICLE I

                                   THE OFFER

     Section 1.1 The Offer.

     (a) Provided that this Agreement has not been terminated pursuant to the
terms hereof, as promptly as practicable, but no later than November 17, 2000,
Acquisition shall commence (within the meaning of Rule 14d-2 under the
Securities Exchange Act of 1934 (the "Exchange Act")), the Offer to exchange a
number of duly authorized, validly issued, fully paid and non-assessable shares
of common stock, par value $0.01 per share (the "Parent Shares"), of Parent
equal to the Exchange Ratio for each of the outstanding shares of common stock,
par value $0.01 per share (the "Shares"), of the Company. The "Exchange Ratio"
shall mean $7.00 divided by the Average Parent Price. The Exchange Ratio shall
be rounded to the nearest ten-thousandth of a share. The "Average Parent Price"
shall mean the average of the closing prices per Parent Share on Nasdaq (as
reported by Bloomberg Financial Markets or, if not reported thereby, any other
authoritative source) for each of the ten consecutive trading days ending on the
trading day that is two trading days prior to the date on which the Shares are
accepted for payment in the Offer. Notwithstanding the foregoing: (x) in the
event that the Average Parent Price is less than $21.00, the Exchange Ratio
shall be 0.3333; (y) in the event that the Average Parent Price is more than
$35.00 but less than or equal to $51.00, the Exchange Ratio shall be 0.2000; and
(z) in the event that the Average Parent Price is greater than $51.00, the
Exchange Ratio shall be $10.20 divided by the Average Parent Price.

     (b) The obligation of Acquisition to accept for payment and to pay for any
Shares tendered pursuant to the Offer shall be subject only to (i) the condition
that there shall be validly tendered a number of

                                       A-1
<PAGE>   104

Shares which, together with the Shares then beneficially owned by Parent,
represents at least two-thirds of the outstanding Shares on a fully diluted
basis (the "Minimum Condition") and (ii) the other conditions set forth in Annex
I hereto. Acquisition expressly reserves the right to increase the Exchange
Ratio or to make any other changes in the terms and conditions of the Offer,
provided, however, that without the prior written consent of the Company, (i)
the Minimum Condition may not be amended or waived and (ii) no change may be
made that changes the form of consideration to be paid, decreases the price per
Share or the number of Shares sought in the Offer, imposes conditions to the
Offer in addition to those set forth in Annex I, extends the expiration date of
the Offer beyond the initial expiration date of the Offer (except as provided in
(c), below) or makes any other change which is adverse to the holders of the
Shares. Subject to the terms and conditions of the Offer and this Agreement,
Acquisition shall accept for payment all Shares validly tendered pursuant to the
Offer as soon as it is permitted to do so under applicable law and shall pay for
such Shares promptly thereafter. Notwithstanding anything to the contrary set
forth herein, no certificates representing fractional Parent Shares shall be
issued in connection with the exchange of Parent Shares for Shares upon
consummation of the Offer, and in lieu thereof the fractional shares which would
be otherwise issued shall be aggregated (such aggregate Parent Shares, the
"Excess Offer Shares") and sold and the proceeds distributed to the tendering
stockholders by the Exchange Agent for the Offer (the "Offer Exchange Agent").
The sale of the Excess Offer Shares by the Offer Exchange Agent shall be
executed on the NASDAQ National Market System and shall be executed in round
lots to the extent practicable. The Offer Exchange Agent shall use all
commercially reasonable efforts to complete the sale of the Excess Offer Shares
as promptly following the expiration of the Offer as, in the Offer Exchange
Agent's reasonable judgment, is practicable consistent with obtaining the best
execution of such sales in light of prevailing market conditions. Until the net
proceeds of such sales have been distributed to the holders of Shares, the Offer
Exchange Agent will hold such proceeds in trust for the holders of Shares. The
Offer Exchange Agent will determine the portion of such net proceeds to which
each holder of Shares shall be entitled, if any, by multiplying the amount of
the aggregate net proceeds by a fraction the numerator of which is the amount of
the fractional share interest to which such holder of Shares is entitled (after
taking into account all Parent Shares to be issued to such holder) and the
denominator of which is the aggregate amount of fractional share interests to
which all holders of Shares are entitled. As soon as practicable after the
determination of the amount of cash, if any, to be paid to holders of Shares
with respect to fractional share interests, the Offer Exchange Agent shall
promptly pay such amounts to such holders of Shares.

     (c) The Offer shall initially be scheduled to expire 20 business days
following the commencement thereof. If, at any then-scheduled expiration date,
the conditions to the Offer have not been satisfied or waived (other than
conditions which are not capable of being satisfied), Acquisition shall extend
the Offer for such amount of time as is reasonably necessary to cause such Offer
conditions to be satisfied, no such extension to exceed ten business days
without the prior written consent of the Company. Notwithstanding the foregoing,
Acquisition may, without the consent of the Company, (i) extend the Offer for
any period required by any rule or regulation of the Securities and Exchange
Commission (the "SEC") applicable to the Offer and (ii) if more than 80% but
less than 90% of the outstanding Shares shall have been validly tendered
pursuant to the Offer as of the scheduled or extended expiration date, extend
the Offer for an aggregate period of not more than five business days beyond the
latest expiration date that would otherwise be permitted under clause (i) of
this sentence.

     (d) As promptly as practicable on the date of commencement of the Offer,
Parent shall file with the SEC a registration statement on Form S-4 (the "Form
S-4") to register the offer and sale of Parent Shares pursuant to the Offer. The
Form S-4 will include a preliminary prospectus containing the information
required under Rule 14d-4(b) promulgated under the Exchange Act. As promptly as
practicable on the date of commencement of the Offer, Parent and Acquisition
shall (i) file with the SEC a Tender Offer Statement on Schedule TO with respect
to the Offer which will contain or incorporate by reference the preliminary
prospectus and form of the related letter of transmittal and (ii) cause the
Offer to Purchase and related documents to be disseminated to holders of Shares.
Parent and Acquisition agree that they shall cause the Form S-4, the Schedule
TO, the Offer to Purchase and all exhibits, amendments or supplements thereto
(which together constitute the "Offer Documents") to comply in all material

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respects with the Exchange Act, the Securities Act of 1933 (the "Securities
Act") and the rules and regulations thereunder and other applicable laws. Each
of Parent, Acquisition and the Company agrees promptly to correct any
information provided by it for use in the Offer Documents if and to the extent
that such information shall have become false or misleading in any material
respect, and Parent and Acquisition further agree to take all steps necessary to
cause the Offer Documents as so corrected to be filed with the SEC and the other
Offer Documents as so corrected to be disseminated to holders of Shares, in each
case as and to the extent required by applicable federal securities laws. The
Company and its counsel shall be given reasonable opportunity to review and
comment on the Offer Documents prior to the filing thereof with the SEC. Parent
and Acquisition agree to provide the Company and its counsel with any comments
Parent, Acquisition or their counsel may receive from the SEC or its staff with
respect to the Offer Documents promptly after receipt of such comments.

     Section 1.2 Company Action.

     (a) The Company hereby consents to the Offer and represents that its Board
of Directors, at a meeting duly called and held, has (i) by the unanimous vote
of the directors present, determined that this Agreement and the transactions
contemplated hereby, including the Offer and the Merger, are fair to and in the
best interests of the Company's stockholders, (ii) by unanimous vote of the
directors present, approved and adopted this Agreement and the transactions
contemplated hereby, including the Offer and the Merger, in accordance with the
requirements of the Delaware General Corporation Law ("DGCL"), (iii) declared
that this Agreement is advisable and (iv) subject to Section 5.6(b) hereof, by
unanimous vote of the directors present, resolved to recommend that stockholders
of the Company accept the Offer and tender their Shares pursuant to the Offer
and approve and adopt this Agreement and the Merger. The Company hereby consents
to the inclusion in the Offer Documents of the recommendations of the Company's
Board of Directors described in this Section 1.2(a). The Company has been
advised that all of its directors and executive officers presently intend to
tender their Shares pursuant to the Offer.

     (b) As promptly as practicable on the day that the Offer is commenced, the
Company shall file with the SEC and disseminate to holders of Shares, in each
case as and to the extent required by applicable federal securities laws, a
Solicitation/Recommendation Statement on Schedule 14D-9 (together with any
amendments or supplements thereto, the "Schedule 14D-9") that, subject to
Section 5.6(b) hereof, shall reflect the recommendations of the Company's Board
of Directors referred to above. The Company agrees that it shall cause the
Schedule 14D-9 to comply in all material respects with the Exchange Act and the
rules and regulations thereunder and other applicable laws. Each of Parent,
Acquisition and the Company agrees promptly to correct any information provided
by it for use in the Schedule 14D-9 if and to the extent that such information
shall have become false or misleading in any material respect, and the Company
further agrees to take all steps necessary to cause the Schedule 14D-9 as so
corrected to be filed with the SEC and to be disseminated to holders of Shares,
in each case as and to the extent required by applicable federal securities
laws. Parent and its counsel shall be given reasonable opportunity to review and
comment on the Schedule 14D-9 prior to the filing thereof with the SEC. The
Company agrees to provide Parent and its counsel with any comments the Company
or its counsel may receive from the SEC or its staff with respect to the
Schedule 14D-9 promptly after receipt of such comments.

     (c) The Company will promptly furnish Parent with a list of its
stockholders, mailing labels and any available listing or computer file
containing the names and addresses of all record holders of Shares and lists of
securities positions of Shares held in stock depositories, in each case true and
correct as of the most recent practicable date, and will provide to Parent such
additional information (including updated lists of stockholders, mailing labels
and lists of securities positions) and such other assistance as Parent may
reasonably request in connection with the Offer. Parent and Acquisition and
their agents shall hold in confidence the information contained in any such
labels, listings and files, will use such information only in connection with
the Offer and the Merger and, if this Agreement shall be terminated, will, upon
request, deliver, and will use their reasonable efforts to cause their agents to
deliver, to the Company (or destroy) all copies and any extracts or summaries
from such information then in their possession or control.

                                       A-3
<PAGE>   106

     Section 1.3 Directors.

     (a) Effective upon the acceptance for payment of any Shares pursuant to the
Offer, Parent shall be entitled to designate the number of directors, rounded up
to the next whole number, on the Company's Board of Directors that equals the
product of (i) the total number of directors on the Company's Board of Directors
(giving effect to the election of any additional directors pursuant to this
Section) and (ii) the percentage that the number of Shares beneficially owned by
Parent and/or Acquisition bears to the total number of Shares outstanding, and
the Company shall take all action necessary to cause Parent's designees to be
elected or appointed to the Company's Board of Directors, including increasing
the number of directors, and seeking and accepting resignations of incumbent
directors. At such time, to the extent requested by Parent, the Company will
also use its best efforts to cause individuals designated by Parent to
constitute the number of members, rounded up to the next whole number, on (i)
each committee of the Board and (ii) each board of directors of each subsidiary
of the Company (and each committee thereof) that represents the same percentage
as such individuals represent on the Board of Directors of the Company.
Notwithstanding the provisions of this Section 1.3, the parties hereto shall use
their respective best efforts to ensure that at least two of the members of the
Company's Board of Directors shall, at all times prior to the Effective Time (as
hereinafter defined), be directors of the Company who were directors of the
Company on the date hereof (the "Continuing Directors"), provided that if there
shall be in office fewer than two Continuing Directors for any reason, the
Company's Board of Directors shall cause a person designated by the remaining
Continuing Director to fill such vacancy who shall be deemed to be a Continuing
Director for all purposes of this Agreement, or if no Continuing Directors then
remain, the other directors of the Company then in office shall designate two
persons to fill such vacancies who are not officers or employees or affiliates
of the Company, Parent or Acquisition or any of their respective affiliates and
such persons shall be deemed to be Continuing Directors for all purposes of this
Agreement.

     (b) The Company's obligations to appoint Parent's designees to the
Company's Board of Directors shall be subject to Section 14(f) of the Exchange
Act and Rule 14f-1 promulgated thereunder. The Company shall promptly take all
actions, and shall include in the Schedule 14D-9 such information with respect
to the Company and its officers and directors, as Section 14(f) and Rule 14f-1
require in order to fulfill its obligations under this Section, so long as
Parent shall have provided to the Company on a timely basis the information
referred to in the following sentence. Parent shall supply to the Company in
writing and be solely responsible for any information with respect to itself and
its nominees, officers, directors and affiliates required by Section 14(f) and
Rule 14f-1.

     (c) Following the election or appointment of Parent's designees pursuant to
Section 1.3(a) and until the Effective Time, the approval of a majority of the
Continuing Directors shall be required to authorize (and such authorization
shall constitute the authorization of the Company's Board of Directors and no
other action on the part of the Company, including any action by any other
director of the Company, shall be required to authorize) any termination of this
Agreement by the Company, any amendment of this Agreement requiring action by
the Company's Board of Directors, any extension of time for performance of any
obligation or action hereunder by Parent or Acquisition, any waiver of
compliance with any of the agreements or conditions contained herein for the
benefit of the Company, any consent or action by the Board of Directors of the
Company hereunder and any other action of the Company hereunder which adversely
affects the holders of Shares (other than Parent or Acquisition).

                                   ARTICLE II

                                   THE MERGER

     Section 2.1 The Merger.  Subject to the terms and conditions of this
Agreement, at the Effective Time, in accordance with this Agreement and the
DGCL, Acquisition shall be merged with and into the Company. Following the
Merger, the separate existence of Acquisition shall cease and the Company shall
continue as the Surviving Corporation.

                                       A-4
<PAGE>   107

     Section 2.2 Effect of the Merger.  Upon the effectiveness of the Merger,
the Surviving Corporation shall succeed to and assume all the rights and
obligations of the Company and Acquisition in accordance with the DGCL and the
Merger shall otherwise have the effects set forth in the applicable provisions
of the DGCL.

     Section 2.3 Closing.  Subject to the satisfaction or waiver of the
conditions to the obligations of the parties to effect the Merger set forth
herein, the consummation of the Merger (the "Closing") will take place as
promptly as practicable, but in no event later than 10:00 a.m. on the second
business day following the satisfaction or waiver of all the conditions (other
than conditions which, by their nature are to be satisfied at closing, but
subject to those conditions) to the obligations of the parties to effect the
Merger set forth herein (the "Closing Date"), at the offices of Dewey Ballantine
LLP, New York, New York 10019, unless another time, date or place is agreed to
by the parties hereto.

     Section 2.4 Consummation of the Merger.  At the Closing, the parties hereto
will cause the Merger to be consummated by (a) filing a certificate of merger or
a certificate of ownership and merger (the "Certificate of Merger") in such form
as is required by and executed in accordance with the relevant provisions of the
DGCL and (b) make all other filings or recordings required under the DGCL. The
Merger shall become effective at such time as the Certificate of Merger is duly
filed with the Delaware Secretary of State (the time the Merger becomes
effective being the "Effective Time").

     Section 2.5 Certificate of Incorporation; By-Laws; Directors and Officers.

     (a) The Certificate of Incorporation of Acquisition in effect at the
Effective Time shall be the Certificate of Incorporation of the Surviving
Corporation (except that such Certificate of Incorporation shall be amended to
provide that the name of the Surviving Corporation shall be the name of the
Company) until thereafter amended in accordance with the provisions thereof and
as provided by the DGCL. The By-Laws of Acquisition in effect at the Effective
Time shall be the By-Laws of the Surviving Corporation until thereafter amended
in accordance with the provisions thereof, the Certificate of Incorporation of
the Surviving Corporation and the DGCL.

     (b) The directors of Acquisition immediately prior to the Effective Time
shall be the initial directors of the Surviving Corporation, each to hold office
in accordance with the Certificate of Incorporation and By-laws of the Surviving
Corporation. The officers of Acquisition immediately prior to the Effective Time
shall be the initial officers of the Surviving Corporation, each to hold office
in accordance with the Certificate of Incorporation and By-laws of the Surviving
Corporation.

     Section 2.6 Effect on Capital Stock.  As of the Effective Time, by virtue
of the Merger and without any action on the part of any holder of Shares or any
shares of capital stock of Acquisition:

          (a) Common Stock of Acquisition. Each share of common stock of
     Acquisition that is outstanding immediately prior to the Effective Time
     shall be converted into and become one fully paid and nonassessable share
     of common stock of the Surviving Corporation.

          (b) Cancellation of Excluded Shares. Each Share that is owned by
     Parent or Acquisition or held in the treasury of the Company, but not
     Shares held in any Company benefit plan (collectively, the "Excluded
     Shares") shall automatically be canceled and retired and shall cease to
     exist, and no cash or other consideration shall be delivered or deliverable
     in exchange therefor.

          (c) Conversion of Shares. Each Share outstanding immediately prior to
     the Effective Time (other than Excluded Shares and, if applicable,
     Dissenting Shares, as defined below) shall be converted into the right to
     receive a number of duly authorized, validly issued, fully paid and non-
     assessable Parent Shares equal to the Exchange Ratio, or any higher
     consideration paid in the Offer (the "Merger Consideration").

     Section 2.7 Exchange of Certificates.

     (a) At the Effective Time, Parent shall deposit, or shall cause to be
deposited, with a bank or other financial institution mutually acceptable to
Parent and the Company (the "Exchange Agent"), for the

                                       A-5
<PAGE>   108

benefit of the holders of Shares, for exchange in accordance with this Article
II, certificates representing the Parent Shares to be issued in connection with
the Merger and cash in lieu of fractional shares (such cash and certificates for
Parent Shares, together with any dividends or distributions with respect thereto
(relating to record dates for such dividends or distributions after the
Effective Time), being hereinafter referred to as the "Exchange Fund") to be
issued pursuant to Section 2.6 and paid pursuant to this Section 2.7 in exchange
for outstanding Shares.

     (b) Promptly after the Effective Time, Parent shall instruct the Exchange
Agent to mail to each holder of record of Shares (i) a letter of transmittal
specifying that delivery shall be effected, and risk of loss and title to such
Shares shall pass, only upon delivery of the Certificates representing such
shares to the Exchange Agent and which letter shall be in such form and have
such other provisions as Parent may reasonably specify and (ii) instructions for
use in effecting the surrender of Certificates in exchange for the consideration
contemplated by Section 2.6 and this Section 2.7. Upon surrender of a
Certificate for cancellation to the Exchange Agent together with such letter of
transmittal, duly executed and completed in accordance with the instructions
thereto, the holder of the shares represented by such Certificate shall be
entitled to receive in exchange therefor (x) a certificate representing that
number of whole Parent Shares and (y) a check representing the amount of cash in
lieu of fractional shares, if any, and unpaid dividends and distributions, if
any, that such holder has the right to receive in respect of the Certificate
surrendered pursuant to the provisions of this Article II, after giving effect
to any required withholding tax, and the shares represented by the Certificate
so surrendered shall forthwith be canceled. No interest will be paid or accrued
on the cash payable to holders of Shares. In the event of a transfer of
ownership of Shares that is not registered in the transfer records of the
Company, a certificate representing the proper number of Parent Shares, together
with a check for the cash to be paid pursuant to Section 2.7 may be issued to
such a transferee if the Certificate representing such Shares is presented to
the Exchange Agent, accompanied by all documents required to evidence and effect
such transfer and to evidence that any applicable stock transfer taxes have been
paid.

     (c) Notwithstanding any other provisions of this Agreement, no dividends or
other distributions declared after the Effective Time on Parent Shares shall be
paid with respect to any Shares represented by a Certificate until such
Certificate is surrendered for exchange as provided herein. Following surrender
of any such Certificate, there shall be paid to the holder of the certificates
representing whole Parent Shares issued in exchange therefor, without interest,
(i) at the time of such surrender, the amount of dividends or other
distributions with a record date after the Effective Time theretofore payable
with respect to such whole Parent Shares and not paid, less the amount of any
withholding taxes which may be required thereon, and (ii) at the appropriate
payment date, the amount of dividends or other distributions with a record date
after the Effective Time but prior to surrender and a payment date subsequent to
surrender payable with respect to such whole Parent Shares, less the amount of
any withholding taxes which may be required thereon.

     (d) At or after the Effective Time, there shall be no transfers on the
stock transfer books of the Company of the Shares which were outstanding
immediately prior to the Effective Time. If, after the Effective Time,
Certificates are presented to the Surviving Corporation, they shall be canceled
and exchanged for certificates for Parent Shares and cash deliverable in respect
thereof pursuant to this Agreement in accordance with the procedures set forth
in this Article 2.

     (e) (i) As promptly as practicable following the Effective Time, the
Exchange Agent shall determine the excess of (A) the number of full Parent
Shares delivered to the Exchange Agent pursuant to Section 2.7(a), over (B) the
aggregate number of full Parent Shares to be distributed to holders of Shares
pursuant to Section 2.7(b) (such excess, the "Excess Shares"). Following the
Effective Time, the Exchange Agent, as agent for the holders of the Shares,
shall sell the Excess Shares at then prevailing prices on NASDAQ National Market
System in the manner set forth in paragraph (ii) of this Section 2.7(e)

     (ii) The sale of the Excess Shares by the Exchange Agent shall be executed
on the NASDAQ National Market System and shall be executed in round lots to the
extent practicable. The Exchange

                                       A-6
<PAGE>   109

Agent shall use all commercially reasonable efforts to complete the sale of the
Excess Shares as promptly following the Effective Time as, in the Exchange
Agent's reasonable judgment, is practicable consistent with obtaining the best
execution of such sales in light of prevailing market conditions. Until the net
proceeds of such sales have been distributed to the holders of Shares, the
Exchange Agent will hold such proceeds in trust for the holders of Shares. The
Exchange Agent will determine the portion of such net proceeds to which each
holder of Shares shall be entitled, if any, by multiplying the amount of the
aggregate net proceeds by a fraction the numerator of which is the amount of the
fractional share interest to which such holder of Shares is entitled (after
taking into account all Parent Shares to be issued to such holder) and the
denominator of which is the aggregate amount of fractional share interests to
which all holders of Shares are entitled. As soon as practicable after the
determination of the amount of cash, if any, to be paid to holders of Shares
with respect to fractional share interests, the Exchange Agent shall promptly
pay such amounts to such holders of Shares in accordance with the terms of
Section 2.7(b).

     (f) Any portion of the Exchange Fund (including the proceeds of any
investments thereof and any Parent Shares) that remains unclaimed by the former
stockholders of the Company one year after the Effective Time shall be delivered
to Parent. Any former stockholders of the Company who have not theretofore
complied with this Article II shall thereafter look only to Parent, and Parent
shall comply with such requests, made in accordance with the terms of this
Agreement, for payment of their Parent Shares, cash and unpaid dividends and
distributions on Parent Shares deliverable in respect of each share of Shares
such stockholder holds as determined pursuant to this Agreement, in each case,
without any interest thereon.

     (g) None of Parent, the Company, the Surviving Corporation, the Exchange
Agent or any other person shall be liable (except to the extent provided by
applicable law) to any former holder of Shares for any amount properly delivered
to a public official pursuant to applicable abandoned property, escheat or
similar laws. Any portion of the Merger Consideration remaining unclaimed by
holders of Shares immediately prior to such time as such amounts would otherwise
escheat to or become property of any Governmental Entity (as hereinafter
defined) shall, to the extent permitted by law, become the property of the
Surviving Corporation free and clear of any claims or interest of any person
previously entitled thereto.

     (h) In the event any Certificate shall have been lost, stolen or destroyed,
upon the making of an affidavit of that fact by the person claiming such
Certificate to be lost, stolen or destroyed and the posting by such person of a
bond in such amount as the Surviving Corporation may reasonably request as
indemnity against any claim that may be made against it with respect to such
Certificate, the Exchange Agent will issue in exchange for such lost, stolen or
destroyed Certificate the Parent Shares and cash deliverable in respect thereof
pursuant to this Agreement.

     Section 2.8 Stock Options.

     (a) As of the Effective Time, each outstanding option to purchase capital
stock of the Company (the "Company Stock Options"), whether or not exercisable
and whether or not vested, under any plan or arrangement of the Company
providing for the grant of options to purchase Shares (collectively, the
"Company Stock Plans"), shall be cancelled in exchange for a single lump sum
cash payment (less any applicable income or employment tax withholding) payable
by the Surviving Corporation, unless otherwise required by the certificates to
be delivered pursuant to Section 5.11(b), at the Effective Time equal to the
product of (x) the number of Shares subject to such Company Stock Option
immediately prior to the Effective Time, whether vested or unvested, and (y) the
excess, if any, of the (1) the Average Parent Price multiplied by the Exchange
Ratio over (2) the exercise price per Share of such Company Stock Option.

     (b) The parties will cooperate to take all reasonable steps necessary to
give effect to Section 2.8(a).

     Section 2.9 Dissenting Shares.  Notwithstanding anything in this Agreement
to the contrary, if dissenters rights are applicable to the Merger under the
DGCL, any Shares held by a person (a "Dissenting Stockholder") who does not vote
to approve the Merger and complies with all the provisions of the DGCL
concerning the right of holders of Shares to dissent from the Merger and require
payment of

                                       A-7
<PAGE>   110

fair value for their Shares ("Dissenting Shares") shall not be converted as
described in Section 2.6, but shall be converted into the right to receive such
consideration as may be determined to be due to such Dissenting Stockholder
pursuant to the DGCL. If, after the Effective Time, such Dissenting Stockholder
withdraws his demand or fails to perfect or otherwise loses his rights as a
Dissenting Stockholder to payment of fair value, in any case pursuant to the
DGCL, his Shares shall be deemed to be converted as of the Effective Time into
the right to receive the Merger Consideration. The Company shall give Parent (i)
prompt notice of any demands for fair value for Shares received by the Company
and (ii) the opportunity to participate in and direct all negotiations and
proceedings with respect to any such demands. The Company shall not, without the
prior written consent of Parent, make any payment with respect to, or settle,
offer to settle or otherwise negotiate, any such demands. All payment made to
any Dissenting Stockholders shall be made by the Company out of the Company's
own funds and shall not be reimbursed by Parent or any affiliate of Parent.

     Section 2.10 Adjustment of Exchange Ratio.  In the event Parent changes (or
establishes a record date for changing) the number of Parent Shares issued and
outstanding prior to the Effective Time as a result of a stock split, stock
dividend, recapitalization, subdivision, reclassification, combination, exchange
of shares or similar transaction with respect to the outstanding Parent Shares,
or shall pay an extraordinary dividend or engage in a similar transaction, and
the record date therefor shall be prior to the Effective Time, the Exchange
Ratio and any other calculations based on or relating to Parent Shares shall be
appropriately adjusted to reflect such stock split, stock dividend,
recapitalization, subdivision, reclassification, combination, exchange of
shares, extraordinary dividend or other similar transaction.

                                  ARTICLE III

                 REPRESENTATIONS AND WARRANTIES OF THE COMPANY

     The Company represents and warrants to Parent and Acquisition that, except
as set forth in the Schedules hereto or the Company SEC Filings:

     Section 3.1 Organization and Qualification.  The Company is a corporation
duly organized, validly existing and in good standing under the laws of the
State of Delaware and has all requisite corporate power and authority to own or
lease and operate its properties and assets and to carry on its business as it
is now being conducted. The Company is duly qualified as a foreign corporation
to do business, and is in good standing, in each jurisdiction in which the
character of its properties and assets owned or leased or the nature of its
activities makes such qualification necessary, except where the failure to be so
qualified would not constitute a Material Adverse Effect (as hereinafter
defined) on the Company. As used herein, "Material Adverse Effect" shall mean,
with respect to any party, one or more events, occurrences, states, or actions
that, individually or in the aggregate, have had or are reasonably likely to
have a material adverse effect on (x) the business, financial condition, assets,
liabilities or results of operations of such party and its subsidiaries, taken
as a whole, other than effects due to (i) general economic, market or political
conditions, (ii) matters generally affecting the industries in which such person
operates or (iii) the announcement or expectation of this Agreement or (y) the
ability of such party to consummate the transactions contemplated by this
Agreement. The Company has heretofore made available to Parent complete and
correct copies of its minute books and its Certificate of Incorporation and
By-Laws.

     Section 3.2 Subsidiaries.

     (a) Each subsidiary of the Company is a corporation, partnership or limited
liability company duly organized, validly existing and in good standing under
the laws of the jurisdiction of its incorporation or organization and has all
requisite corporate, partnership or limited liability company power and
authority to own or lease and operate its properties and assets and to carry on
its business as it is now being conducted. Each subsidiary is duly qualified as
a foreign corporation to do business, and is in good standing, in each
jurisdiction in which the character of its properties and assets owned or leased
or the nature of its activities makes such qualification necessary, except where
the failure to be so qualified would not constitute a Material Adverse Effect on
the Company. Each subsidiary and its jurisdiction of incorporation or

                                       A-8
<PAGE>   111

organization is identified in the Company's Annual Report on Form 10-K for the
year ended December 31, 1999. The Company has heretofore made available to
Parent complete and correct copies of the minute books and the charter and
by-laws (or other organizational documents) of all subsidiaries. Except for
shares of, or other ownership interests in, its subsidiaries, the Company does
not own of record or beneficially, directly or indirectly, any shares of
outstanding capital stock of any other corporation. "Company Subsidiary" means a
direct or indirect subsidiary of the Company.

     (b) All the outstanding shares of capital stock of, or other ownership
interests in, each subsidiary are validly issued, fully paid and nonassessable
and are owned by the Company or by a wholly-owned subsidiary of the Company,
free and clear of any liens, claims, charges, security interests, pledges or
encumbrances ("Liens"), and there are no proxies outstanding or restrictions on
voting with respect to any such shares.

     (c) There are not outstanding (i) any options, warrants or other rights to
purchase from the Company or any subsidiary of the Company any capital stock or
other securities of the Company or any subsidiary of the Company, (ii) any
securities, notes or other indebtedness convertible into or exchangeable for
shares of such capital stock or securities, (iii) any other commitments or
rights of any kind for the Company or any subsidiary of the Company to issue
additional shares of capital stock, options, warrants or other securities or
(iv) any equity equivalent or other ownership interests in the Company or any
subsidiary of the Company or similar rights.

     (d) There are no stockholder agreements, voting trusts or other agreements
or understandings to which the Company or any subsidiary of the Company is a
party or by which any of them is bound relating to the voting or registration of
any shares of capital stock of the Company or restricting any stockholders of
the Company from selling or otherwise disposing of any Shares. The Company does
not, directly or indirectly, own any stock of, or any other interest in, any
other person other than the Company Subsidiaries.

     Section 3.3 Authority Relative to Agreements.  The Company has all
requisite corporate power and authority to execute and deliver this Agreement
and, subject to the approval and adoption of this Agreement by the affirmative
vote of the holders of two-thirds of the outstanding Shares (the "Company
Stockholder Approval"), to perform its obligations hereunder. The execution,
delivery and performance of this Agreement by the Company and the consummation
by it of the transactions contemplated hereby have been duly authorized by the
Company's Board of Directors and no other corporate proceedings on the part of
the Company are necessary to authorize this Agreement and the transactions
contemplated hereby, other than the Company Stockholder Approval. This Agreement
has been duly executed and delivered by the Company and, subject to such
stockholder approval, constitutes the legal, valid and binding obligation of the
Company, enforceable against the Company in accordance with its terms.

     Section 3.4 Non-Contravention.  The execution and delivery of this
Agreement by the Company does not and the consummation by the Company of the
transactions contemplated hereby will not (i) conflict with any provision of the
Certificate of Incorporation or By-Laws of the Company or the comparable charter
or organizational documents of any of the Company Subsidiaries, (ii) result
(with the giving of notice or the lapse of time or both) in any violation of or
default or loss of a benefit under, or permit the acceleration or termination of
any obligation under, any mortgage, indenture, lease, contract, agreement or
other instrument, permit, concession, grant, franchise, license, judgment,
order, decree, statute, law, ordinance, rule or regulation applicable to the
Company, any subsidiary or any Trust (as defined hereinafter) or their
respective properties or (iii) result in the creation or imposition of any Lien
upon any asset of the Company, any subsidiary or any Trust, other than (in the
case of clauses (ii) and (iii) above) such as would not, individually or in the
aggregate, have a Material Adverse Effect on the Company. Schedule 3.4 lists
each material mortgage, indenture, lease, contract, agreement or other
instrument under which the execution and delivery of this Agreement by the
Company does or the consummation of the transactions contemplated hereby would
result in any violation of or default or loss of a benefit, or would permit the
acceleration or termination of any obligation. Neither the Company nor any of
its subsidiaries was, is or will be required to make any filing with or give any
notice to, or obtain any consent from, any

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Person in connection with the execution or delivery of this Agreement and the
consummation by the Company of the transactions contemplated hereby. Neither the
execution, delivery or performance of this Agreement, nor the consummation of
the Offer, the Merger or any of the other transactions contemplated by this
Agreement, will result in any bonus, golden parachute, severance or other
payment or obligation to any current or former employee or director of the
Company or any of its subsidiaries (whether or not under any Employee Plan), or
materially increase the benefits payable or provided under any Employee Plan, or
result in any acceleration of the time of payment or vesting of any such
benefits.

     Section 3.5 Capitalization.  The authorized capital stock of the Company
consists of 100,000,000 Shares and 1,000,000 shares of preferred stock. As of
November 3, 2000, 19,048,640 Shares were outstanding, all of which were duly and
validly issued, are fully paid and nonassessable and were not issued in
violation of any preemptive or similar right and no preferred shares were
outstanding. As of November 3, 2000, 2,467,938 Shares were issuable under the
Company Stock Plans. Except as set forth herein or for Shares issued under the
Company Stock Plans since such date, no subscription, warrant, option,
convertible security, stock appreciation or other right (contingent or other) to
purchase or acquire, or any securities convertible into or exchangeable or
exercisable for, any shares of or other interest in any class of capital stock
of the Company or any subsidiary is authorized or outstanding and there is not
any commitment of the Company or any subsidiary to issue any shares, warrants,
options or other such rights or to distribute to holders of any class of its
capital stock any evidences of indebtedness or assets. Neither the Company nor
any subsidiary has any obligation (contingent or other) to purchase, redeem or
otherwise acquire any shares of its capital stock or any interest therein or to
pay any dividend or make any other distribution in respect thereof.

     Section 3.6 SEC Filings.  The Company has made available to Parent true and
complete copies of each form, report, schedule, definitive proxy statement and
registration statement filed by the Company with the SEC subsequent to January
1, 1997 and on or prior to the date hereof (collectively, the "Company SEC
Filings"), which are all forms, reports, schedules, statements and other
documents (other than preliminary material) that the Company was required to
file with the SEC. The Company SEC Filings (including, without limitation, any
financial statements or schedules included therein) (i) were prepared in
material compliance with the requirements of the Securities Act or the Exchange
Act, as the case may be, and (ii) did not at the time of filing (or if amended,
supplemented or superseded by a filing prior to the date hereof, on the date of
that filing) contain any untrue statement of a material fact or omit to state a
material fact required to be stated therein or necessary in order to make the
statements therein, in the light of the circumstances under which they were
made, not misleading.

     Section 3.7 Financial Statements.  Schedule 3.7 includes the consolidated
balance sheet of the Company as of September 30, 2000 and the consolidated
statement of operations for the three and nine month periods ended September 30,
2000. The consolidated financial statements of the Company included in the
Company SEC Filings or on Schedule 3.7 have been prepared in accordance with
generally accepted accounting principles ("GAAP") consistently applied and
consistent with prior periods, subject, in the case of unaudited interim
consolidated financial statements, to year-end adjustments (which consist of
normal recurring accruals) and the absence of certain footnote disclosures. The
consolidated balance sheets of the Company included in the Company SEC Filings
or on Schedule 3.7 fairly present in all material respects the consolidated
financial position of the Company as of their respective dates, and the related
consolidated statements of operations, cash flows and stockholders' equity
included in the Company SEC Filings or on Schedule 3.7 fairly present in all
material respects the consolidated results of operations of the Company for the
respective periods then ended, subject, in the case of unaudited interim
financial statements, to year-end adjustments (which consist of normal recurring
accruals) and the absence of certain footnote disclosures. None of the Company
and its subsidiaries has any liabilities or obligations (whether absolute,
accrued, contingent or otherwise) of a nature required by GAAP to be reflected
in a consolidated balance sheet, except for those (i) that are accrued or
reserved against in the Company's financial statements (or accurately reflected
in the notes thereto) included in the Company SEC Filings or on Schedule 3.7 or
(ii) that were incurred subsequent to September 30, 2000 in the ordinary course
of

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business and consistent with past practice and do not constitute a Material
Adverse Effect on the Company.

     Section 3.8 Absence of Certain Changes or Events.  Since September 30,
2000, (i) the Company and its subsidiaries have conducted their respective
business only in the ordinary course, (ii) there has not been any Material
Adverse Effect with respect to the Company, (iii) the Company and its
subsidiaries have not made any capital expenditure which, when added to all
other capital expenditures made on behalf of them exceeds $150,000 in the
aggregate, (iv) the Company and its subsidiaries have not, other than in the
ordinary course of business, written off as uncollectible, or established any
extraordinary reserve with respect to, any account receivable or other
indebtedness; and (v) neither the Company nor any subsidiary has taken any
action contemplated by Section 5.1.

     Section 3.9 Governmental Approvals.  No consent, approval, order or
authorization of, or registration, declaration or filing with, any federal,
state, local or foreign governmental or regulatory authority ("Governmental
Entity") is required to be made or obtained by the Company in connection with
the execution and delivery of this Agreement by the Company or the consummation
by the Company of the transactions contemplated hereby, except for (i)
compliance by the Company with the Hart-Scott-Rodino Antitrust Improvements Act
of 1976, as amended (the "HSR Act") and similar statutes or regulations of
foreign jurisdictions, (ii) the filing of the Certificate of Merger with the
Secretary of State of the State of Delaware in accordance with the DGCL, (iii)
the filing with the SEC of (1) a proxy or information statement (the "Proxy
Statement") in definitive form for distribution to the stockholders of the
Company in advance of the Stockholders Meeting in accordance with Regulation 14A
promulgated under the Exchange Act, (2) the Schedule 14D-9 and (3) such reports
under and such other compliance with the Exchange Act and Securities Act and the
rules and regulations thereunder as may be required in connection with this
Agreement and the transactions contemplated hereby and (iv) such consents,
approvals, orders or authorizations of Governmental Entities which if not
obtained, or registrations, declarations or filings with Governmental Entities
which if not made, would not constitute a Material Adverse Effect on the
Company.

     Section 3.10 Compliance with Laws; No Default.

     (a) Neither the Company nor any subsidiary, as of the date hereof, is in
default under or in violation of any order of any court, governmental authority
or arbitration board or tribunal to which the Company or such subsidiary is or
was subject or in violation of any laws, ordinances, governmental rules or
regulations (including, but not limited to, those relating to export controls,
labor and employment matters and foreign corrupt practices) to which the Company
or any subsidiary is or was subject, except for such defaults or violations
that, in the aggregate, would not have a Material Adverse Effect on the Company.
Neither the Company nor any subsidiary has, as of the date hereof, failed to
obtain any licenses, permits, franchises or other governmental authorizations
necessary to the ownership of its properties or assets or to the conduct of its
business, which failure would have a Material Adverse Effect on the Company.

     (b) No violation of, default or event of default under, loss of benefit
under, or right to terminate or accelerate (a "Violation") exists as of the date
hereof (and no event has occurred which, with notice or the lapse of time or
both, would constitute a Violation) of any term, condition or provision of (x)
the Certificate of Incorporation or by-laws (or other organizational documents)
of the Company or any of its subsidiaries, (y) any loan or credit agreement,
note, bond, mortgage, indenture, lease, Contract (as hereinafter defined) or
other agreement, obligation or commitment, instrument, permit, concession,
franchise or license to which the Company, any of its subsidiaries or any Trust
is now a party or by which the Company, any of its subsidiaries or any Trust or
any of their respective properties or assets is bound except in the case of (x)
and (y) for Violations which, in the aggregate, would not have a Material
Adverse Effect on the Company.

     (c) The Company and the Company Subsidiaries have all approvals,
authorizations, certificates, consents, licenses, orders, permits,
qualifications or other similar authorizations of all Governmental Authorities
that are required as of the date hereof by any Governmental Authority to allow
the Company and the Company Subsidiaries to operate the business in
substantially the same manner as currently

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<PAGE>   114

operated, except for such approvals, authorizations, certificates, consents,
licenses, orders, permits, qualifications or other similar authorizations the
failure of which to obtain would not constitute a Material Adverse Effect on the
Company (the "Permits"). As of the date hereof, no notice, citation, summons or
order has been issued, no complaint has been filed, no penalty has been assessed
and no investigation or review is pending, of which the Company or any of the
Company Subsidiaries has received formal or informal written notice or of which
the Company has knowledge, or, to the knowledge of the Company, threatened by
any Governmental Entity or other entity with respect to any alleged failure by
the Company or any Company Subsidiary to have any Permit required in connection
with the business or otherwise applicable to the business or with respect to any
proposed suspension, revocation, non-renewal or similar action in respect of any
Permit, except where the failure to have any such permit would not constitute a
Material Adverse Effect on the Company. Schedule 3.10(c) lists each material
state and local Permit relating to the business that is currently in full force
and effect. The Company and the Company Subsidiaries have supplied Parent with
true, complete and accurate copies of all correspondence received, since January
1, 1997, by the Company, the Company Subsidiaries or their respective
predecessors in interest from state or U.S. federal regulatory authorities that
regulate the business.

     (d) Schedule 3.10(d) lists each governmental or other registration, filing,
application, notice, transfer, consent, approval, order, qualification and
waiver (each, a "Required Governmental Approval") required under applicable law
to be obtained by the Company or any of the Company Subsidiaries by virtue of
the execution and delivery of this Agreement or the consummation of the
transactions contemplated hereby pursuant to any Permit. None of the Permits
will be terminated or become terminable or impaired as a result of the
transactions contemplated hereby so as to have a Material Adverse Effect on the
Company.

     Section 3.11 Information Supplied.

     (a) Each of the Schedule 14D-9 and the other documents required to be filed
by the Company with the SEC in connection with the Offer, the Merger and the
other transactions contemplated hereby, including the Proxy Statement, and the
information supplied by the Company to Parent for inclusion or incorporation by
reference in any such documents, will comply as to form in all material respects
with the requirements of the Exchange Act and the Securities Act, as the case
may be, and will not, on the date of its filing or dissemination, as the case
may be, contain any untrue statement of a material fact or omit to state any
material fact required to be stated therein or necessary in order to make the
statements therein, in light of the circumstances under which they are made, not
misleading.

     (b) Notwithstanding the foregoing provisions of this Section 3.11, no
representation or warranty is made by the Company with respect to statements
made or incorporated by reference in the Schedule 14D-9 based on information
supplied by Parent or Acquisition expressly for inclusion or incorporation by
reference therein or based on information which is not made in or incorporated
by reference in such documents but which should have been disclosed pursuant to
Section 4.8.

     Section 3.12 Litigation.  As of the date hereof, there is no action, suit,
investigation, proceeding or claim pending with respect to which the Company has
received service of process or, to the best knowledge of the Company, threatened
against or affecting the Company or any subsidiary, or their respective
properties or rights, before any court or governmental body or arbitration board
or tribunal, either alone or together with other similar actions, the outcome of
which would reasonably be expected to have a Material Adverse Effect on the
Company.

     Section 3.13 Intellectual Property Rights.

     (a) Except as would not have a Material Adverse Effect, the Company has
good title to and is the sole owner, free and clear of any Lien (except for (i)
any Lien for current taxes not yet due and payable and (ii) minor Liens that
have arisen in the ordinary course of business and that do not (individually or
in the aggregate) materially detract from the value of the Company Rights
subject thereto or materially impair the operations of the Company or any of its
subsidiaries), of, or has a valid license, without the payment of any royalty
except with respect to off-the-shelf software, to, all (x) U.S. and foreign
trademarks, service marks, logos, designs, trade names, internet domain names
and corporate names,

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patents, registered designs, copyrights, computer software and databases,
whether or not registered, including all grants, registrations and applications
relating thereto, and (y) all other trade secrets, know-how and intellectual
property rights (collectively, the "Intellectual Property Rights") now or
formerly used in its business or necessary for the conduct of its business as
now conducted (such Intellectual Property Rights owned by or licensed to the
Company, subject to such exception, collectively, the "Company Rights").
Schedule 3.13(a) sets forth, with respect to each Company Right owned by the
Company or any of its subsidiaries and registered with any Governmental
Authority or for which an application has been filed with any Governmental
Authority (i) a brief description of such Company Rights, and (ii) the names of
the jurisdictions covered by the applicable registration or application.
Schedule 3.13(a) identifies and provides a brief description of, and identifies
any royalty or payment obligations in excess of $10,000 individually or $25,000
in the aggregate with respect to, each Company Right that is licensed or
otherwise made available to the Company or any of its subsidiaries by any Person
and is material to the business of the Company or any its subsidiaries (except
for any Company Right that is licensed to the Company or any its subsidiaries
under any third party software license generally available to the public), and
identifies the Contract under which such Company Right is being licensed or
otherwise made available to the Company or any its subsidiaries. The Company's
rights in the Company Rights are valid and enforceable. The Company has received
no demand, claim, notice or inquiry from any Person in respect of the Company
Rights which challenges, threatens to challenge or inquires as to whether there
is any basis to challenge, the validity of, or the rights of the Company in, any
Company Rights. To the Company's knowledge, the Company is not in violation or
infringement of, and has not violated or infringed, any Intellectual Property
Rights of any other Person and to the Company's knowledge, no Person is
infringing any Company Rights.

     (b) The Company has implemented measures in accordance with industry
practice to protect its Intellectual Property Rights in relation to its
employees, independent contractors and consultants and has entered into
agreements with those employees, independent contractors and consultants who are
software developers assigned to the software development group of the Company,
as well as any other person who has access to the source code of the Company
Rights, that (i) bind such persons to keep confidential and not disclose to any
other person any of the trade secrets, know-how and other confidential
Intellectual Property Rights of the Company and its subsidiaries and (ii) assign
to the Company or such subsidiary all of the employee's, contractor's or
consultant's rights, including all Intellectual Property Rights, in any
Intellectual Property created or developed thereby that is used in connection
with, or that relates to, the business of the Company and its subsidiaries. To
the knowledge of the Company, no employee of the Company or any subsidiary has
entered into any contract or other agreement with any person (other than the
Company or the applicable subsidiary) that restricts or limits in any way the
scope or type of work in which the employee may be engaged for the Company or
such subsidiary or requires the employee to transfer, assign, or disclose
information concerning the employee's work with the Company or such subsidiary
to any other person.

     (c) The Company Rights constitute all the Intellectual Property Rights
necessary to enable the Company and its subsidiaries to conduct their business
in the manner in which such business has been and is being conducted. Neither
the Company nor any of its subsidiaries has (i) licensed any of the material
Company Rights to any Person on an exclusive basis, or (ii) entered into any
covenant not to compete or Contract limiting or purporting to limit the ability
of the Company or any of its subsidiaries to exploit fully any material Company
Rights or to transact business in any market or geographical area or with any
Person.

     Section 3.14 Taxes.

     (a) Each of the Company and its subsidiaries has (i) timely filed all
material Tax Returns (as hereinafter defined) required to be filed by it as of
the date hereof in respect of any Taxes (as hereinafter defined), which Tax
Returns were true, correct and complete in all material respects, (ii) timely
paid all Taxes that were required to have been paid, (iii) established reserves
that are adequate for the payment of all Taxes not yet due and payable with
respect to the Company and its subsidiaries and the results of their operations
through the date hereof and will not have incurred any material liability for
Taxes for the period

                                      A-13
<PAGE>   116

commencing after the date hereof and ending immediately prior to the Effective
Time, other than in the ordinary course of business and except as contemplated
by Sections 3.31 and 5.14 of this Agreement, and (iv) complied in all material
respects with all applicable laws, rules and regulations relating to the payment
and withholding of Taxes and timely withheld from employee wages and paid over
to the proper governmental authorities all amounts required to be so withheld
and paid over.

     (b) As of the date hereof (i) there is no deficiency, claim, audit, action,
suit, proceeding or investigation now pending or threatened in writing against
or with respect to the Company or any subsidiary in respect of any material
Taxes, and (ii) there are no requests for rulings or determinations in respect
of any Taxes pending between the Company or any subsidiary and any taxing
authority.

     (c) Neither the Company nor any subsidiary has ever been a member of an
affiliated group filing consolidated, combined or unitary Tax Returns other than
a group for which the Company was the common parent.

     (d) Neither the Company nor any subsidiary has executed or entered into (or
prior to the Effective Time will execute or enter into) with the Internal
Revenue Service or any taxing authority any agreement or other document
extending or having the effect of extending the period for assessments or
collection of any material Taxes for which the Company or any subsidiary would
be liable, which period has not since expired.

     (e) Neither the Company nor any of its subsidiaries is a party to any
agreement, contract, arrangement or plan that (x) has resulted or would result,
separately or in the aggregate, in connection with the transactions contemplated
by this Agreement or any change of control of the Company, in the payment of any
"excess parachute payments" within the meaning of section 280G of the Code or
any payments that would not be deductible, in full or in part, by reason of the
limitation imposed by section 162(m) of the Code or (y) would require the
Company or any subsidiary to pay, reimburse or indemnify any person against, any
tax imposed pursuant to Section 4999 of the Code.

     (f) For purposes of this Agreement, "Tax" (and with correlative meaning,
"Taxes") shall mean (a) all income, franchise, sales, use, ad valorem, property,
payroll, withholding, excise, severance, transfer, employment, alternative or
add-on minimum, stamp, occupation, premium, environmental or windfall profits,
and other taxes together with any interest and any penalties, additions to tax
or additional amounts imposed by any federal, state, local, foreign or other
taxing authority, (b) any liability for payment of amounts described in clause
(a) whether as a result of transferee liability, of being a member of an
affiliated, consolidated, combined or unitary group for any period, or otherwise
through operation of law and (c) any liability for the payment of amounts
described in clauses (a) or (b) as a result of any Tax sharing, Tax indemnity or
Tax allocation agreement.

     (g) For purposes of this Agreement, "Tax Return" means all federal, state,
local and foreign tax returns, estimates, information statements and reports
relating to Taxes.

     (h) Neither the Company nor any of its subsidiaries has taken, failed to
take or agreed to take any action or knows of any fact, circumstance, plan or
intention that is or would be reasonably likely to prevent the Transaction from
qualifying as a "reorganization" within the meaning of Section 368(a) of the
Code.

     (i) There are no material Liens for Taxes (other than current Taxes not yet
due and payable or delinquent) on the assets of the Company or any subsidiary.

     (j) To the knowledge of the Company, no claim has ever been made in writing
by a taxing authority in a jurisdiction where neither the Company nor any
subsidiary files a Tax Return that either the Company or any subsidiary is, or
may be subject to, taxation in that jurisdiction.

     (k) Neither the Company nor any subsidiary has constituted either a
"distributing corporation" or "controlled corporation" in a distribution of
stock qualifying for tax-free treatment under Section 355 of the Code (x) in the
two years prior to the date of this Agreement or (y) in a distribution which
otherwise constitutes part of a "plan" or "series of related transactions"
(within the meaning of Section 355(e) of the Code) in conjunction with the
Transaction.

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<PAGE>   117

     (l) Neither the Company nor any subsidiary is a party to any Tax sharing,
Tax indemnification or Tax allocation agreement.

     Section 3.15 Employee Benefit Plans.

     (a) Schedule 3.15(a) sets forth a true and correct list of each deferred
compensation plan, stock option, incentive compensation plan, equity
compensation plan, "welfare plan" (within the meaning of section 3(1) of the
Employee Retirement Income Security Act of 1974, as amended ("ERISA")); "pension
plan" (within the meaning of section 3(2) of ERISA); each employment,
termination or severance agreement and each other fringe benefit, employee
benefit plan, fund, program, agreement or arrangement, in each case, that is
sponsored, maintained or contributed to or required to be contributed to by the
Company or any subsidiary for the benefit of any employee or former employee of
the Company or any Company subsidiary. Such plans are referred to collectively
herein as the "Company Plans".

     (b) The Company has heretofore made available to Parent with respect to
each of the Company Plans true and correct copies of each of the following
documents if applicable: (i) the Company Plan document, including, without
limitation, all amendments thereto, all related trust documents, insurance
contracts and annuity contract, (ii) the most recent determination letter from
the Internal Revenue Service for such Company Plan, (iii) the most recent
summary plan description and related summaries of material modifications, (iv)
the Form 5500 tax forms for each of the last two years and (v) all registration
statements, annual reports and prospectuses prepared in connection with each
Company Plan.

     (c) As of the date hereof, each of the Company Plans is in material
compliance with its terms and the applicable provisions of the Code and ERISA;
each of the Company Plans intended to be "qualified" within the meaning of
section 401(a) of the Code has received a determination letter from the Internal
Revenue Service that the Company Plan is qualified and the Company knows of no
condition or event that could reasonably be expected to adversely affect such
status. Neither the Company, any subsidiary, nor any trade or business, whether
or not incorporated, which together with the Company would be deemed a "single
employer" within the meaning of Section 4001 of ERISA (an "ERISA Affiliate") has
had in the previous six years (i) any liability, contingent or otherwise, under
Title IV of ERISA or Section 412 of the Code, (ii) an obligation to contribute
to any "multiemployer plan" (as defined in Section 3(37) of ERISA). There are no
pending, or to the knowledge of the Company, threatened or anticipated disputes,
law suits, investigations, audits, complaints or claims (other than routine
claims for benefits) by, on behalf of or against any of the Company Plans or any
trusts related thereto except as individually or in the aggregate, would not be
reasonably likely to have a Material Adverse Effect on the Company.

     (d) With respect to each Company Plan and as of the date hereof, there has
not occurred, and no person or entity is contractually bound to enter into, any
nonexempt "prohibited transaction" within the meaning of Section 4975 of the
Code or Section 406 of ERISA, nor any transaction that would result in a civil
penalty being imposed under Section 409 or 502(i) of ERISA, except for any such
transactions which, individually or in the aggregate, would not be reasonably
likely to have a Material Adverse Effect on the Company.

     (e) Neither the Company nor any subsidiary is party to any agreement with
any employee the benefits of which (including, without limitation, severance
benefits) are contingent, or the terms of which are materially altered, upon the
occurrence of a transaction involving the Company or any subsidiary of the
nature of any of the transactions contemplated by this Agreement.

     (f) No Company Plan provides, or reflects or represents any liability to
provide, retiree life insurance, retiree health or other retiree employee
welfare benefits to any person for any reason, except as may be required by the
Consolidated Omnibus Budget Reconciliation Act of 1985, as amended ("COBRA") or
other applicable statute, and neither the Company nor an ERISA Affiliate has
ever represented, promised or contracted to any employee (either individually or
to employees as a group) or any other person that such employee(s) or other
person would be provided with retiree life insurance, retiree health or other
retiree employee welfare benefit, except to the extent required by statute.

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<PAGE>   118

     (g) The Company and each ERISA Affiliate has, prior to the Effective Time,
complied in all material respects with the health care continuation requirements
of COBRA, the requirements of Family Medical Leave Act of 1993, as amended, or
any similar provisions of state law applicable to its employees.

     (h) As of the date hereof (i) no union or other collective bargaining unit
has been certified as representing any of the employees of the Company or any
subsidiary, nor has the Company or any subsidiary agreed to recognize any union
or other collective bargaining unit; (ii) there are no labor disputes pending or
threatened involving strikes, work stoppages, slowdowns or lockouts with respect
to employee of the Company or any subsidiary; or (iii) there are no grievance
proceedings or claims of unfair labor practices filed or, to the Company's
knowledge, threatened to be filed with the National Labor Relations Board
against the Company or any subsidiary.

     (i) Since December 31, 1998 neither the Company nor any of the Company
Subsidiaries has received any citation or other notification for the violation
of occupational and health safety laws or regulations.

     (j) All individuals who are performing or, since December 31, 1998, have
performed services for the Company or any of the Company Subsidiaries and are or
were classified by the Company or any of the Company Subsidiaries as
"independent contractors" qualify for such classification under Section 530 of
the Revenue Act of 1978, as amended by Section 1706 of the Tax Reform Act of
1986, as applicable, except for such instances which are not, in the aggregate,
material.

     (k) As of the date hereof, there are no complaints, charges or claims
against the Company or any of its subsidiaries pending, or threatened in writing
to be brought or filed, with any Governmental Entity or arbitrator based on,
arising out of, in connection with, or otherwise relating to the employment or
termination of employment of any individual by the Company or any of its
subsidiaries.

     (l) The Company and each of its subsidiaries is, as of the date hereof, in
compliance in all material respects with all laws relating to the employment of
labor, including all such laws and orders relating to wages, hours, collective
bargaining, discrimination, civil rights, safety and health and workers'
compensation.

     (m) There has been no "mass layoff" or "plant closing" as defined by the
Worker Adjustment and Retraining Notification Act and any similar state or local
"plant closing" law with respect to the Company or any of its subsidiaries
within the six (6) months prior to the date hereof.

     Section 3.16 Environmental Matters.  Each of the Company and the
subsidiaries conducts its business and operations in material compliance with
all applicable environmental laws, ordinances and regulations, and neither the
Company nor any subsidiary has, as of the date hereof, received notice of any
pending or threatened claim, action, suit, proceeding, hearing or investigation,
based on or related to the manufacture, processing, distribution, use,
treatment, storage, disposal, transport or handling, or the emission, discharge,
release or threatened release into the environment, of any pollutant,
contaminant, or hazardous or toxic material or waste (collectively, an
"Environmental Event") by the Company or any subsidiary, the outcome of which
would reasonably be expected to have a Material Adverse Effect on the Company.
To the best knowledge of the Company, no notice of any material Environmental
Event was given to any person or entity that occupied any of the premises
occupied by or used by the Company or any subsidiary prior to the date such
premises were so occupied. Without limiting the generality of the foregoing, to
the best knowledge of the Company, neither the Company nor any subsidiary has
disposed of or placed on or in any property or facility used in its business any
waste materials, hazardous materials or hazardous substances in violation of
law, which would have a Material Adverse Effect on the Company.

     Section 3.17 State Takeover Statutes; Rights Agreement.

     (a) The Board of Directors of the Company has approved this Agreement, the
Merger and the other transactions contemplated hereby, and such approval is
sufficient to render inapplicable to the Merger the provisions of Sections 203
of the DGCL.

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     (b) The Rights Agreement, dated as of December 30, 1998 (the "Rights
Agreement"), between the Company and Harris Trust and Savings Bank, as rights
agent, has been amended to (i) render the Rights Agreement inapplicable to this
Agreement and the transactions contemplated hereby and (ii) ensure that (y) none
of Parent or its subsidiaries is an Acquiring Person or (z) a Distribution Date,
a Triggering Event or Stock Acquisition Date (as such terms are defined in the
Rights Agreement) does not occur by reason of the execution of this Agreement,
the consummation of the Offer or the Merger, or the consummation of the other
transactions contemplated by this Agreement.

     Section 3.18 Opinion of Financial Advisor.  The Company has received the
opinion of Donaldson, Lufkin & Jenrette Securities Corporation ("DLJ"), dated
November 6, 2000, substantially to the effect that the consideration to be
received in the Offer and the Merger by the holders of Shares is fair to such
holders from a financial point of view, a copy of which opinion has been (or
promptly will be) delivered to Parent.

     Section 3.19 Brokers.  No person is entitled to any brokerage or finder's,
financial advisor's or other similar fee or commission in connection with the
transactions contemplated by this Agreement and as a result of any action taken
by or on behalf of the Company, other than DLJ pursuant to an engagement letter
dated May 3, 2000 and an amendment thereto dated September 18, 2000, copies of
which have been made available to Parent.

     Section 3.20 Beneficial Interests in Trusts.  Schedule 3.20 sets forth (i)
a complete and accurate list of all common law trusts, owner trusts or business
trusts in which the Company or any subsidiary, direct or indirectly, owns a
beneficial interest (the "Trusts") and (ii) the percentage interest directly or
indirectly owned by the Company and each such subsidiary in each Trust. Each
Trust was organized for the purpose of acquiring and holding Leasing Contracts
or beneficial interests in other Trusts and for the purpose of financing
Contracts through Warehouse Lines or through Securitization Transactions. For
all purposes of this Agreement, "Leasing Contract" means each of the agreements
evidencing the indebtedness of the related obligor(s), including, as applicable,
schedules, supplements and amendments thereto, under which the Company, a
Company Subsidiary or a third party from whom the Company or a Company
Subsidiary acquired any such agreements or on behalf of whom the Company or any
Company Subsidiary services any such agreement, as applicable, leases or
finances specified equipment or other assets to an obligor. For all purposes of
this Agreement, "Warehouse Line" means any line of credit, loan agreement or
other credit facility (other than any Securitization Transaction) pursuant to
which Leasing Contracts are financed. For all purposes of this Agreement,
"Securitization Transaction" means any transaction, however named, between the
Company, a subsidiary of the Company or a Trust and any one or more purchasers
and/or investors which provides for the monetization of a discrete pool or pools
of Leasing Contracts through debt securities or ownership interests issued by a
trust, corporation, partnership or other entity (including a Trust) which owns
Leasing Contracts in connection with a Securitization Transaction for the
benefit of the securities holders (a "Securitization Entity") supported or
backed by Leasing Contracts that have been transferred to such Securitization
Entity by the Company, a subsidiary of the Company or a Trust.

     Section 3.21 Leasing Contracts.  The Company has previously delivered to
the Parent and Acquisition a data tape on which certain information regarding
the pools of Leasing Contracts subject to the Warehouse Lines and the
Securitization Transactions as of October 1, 2000 is recorded. The information
contained in such tape is true and correct in all material respects.

     Section 3.22 Warehouse Lines.  Schedule 3.22 sets forth a list of each
Warehouse Line as of October 1, 2000, together with the aggregate discounted
principal balance of Leasing Contracts subject to each such Warehouse Line as of
such date (discounted in the manner specified in the agreements and arrangements
pursuant to which it is bound under a Warehouse Line (such agreements and
arrangements are collectively referred to as the "Warehouse Instruments")). Each
Warehouse Line is in full force and effect at the date hereof.

                                      A-17
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     Section 3.23 Securitization Transactions.

     (a) Schedule 3.23 sets forth a list of each Securitization Transaction as
of October 1, 2000, together with the aggregate discounted principal balance of
Leasing Contracts subject to each such Securitization Transaction as of such
date (discounted in the manner specified in the related Securitization
Instruments).

     (b) As of the date hereof, each of the Company, the subsidiaries of the
Company and the Trusts has complied, in all material respects, with (i) all
obligations and all conditions to be performed or satisfied by it with respect
to all agreements and arrangements pursuant to which it is bound under a
Securitization Transaction (such agreements and arrangements are collectively
referred to as the "Securitization Instruments") and (ii) all applicable laws
relating to Securitization Transactions.

     (c) All required federal, state and local tax and information returns and
elections relating to any Securitization Transaction for which the Company, any
subsidiary of the Company or any Trust is responsible under the Securitization
Instruments have been accurately prepared and properly and timely filed, and any
taxes required to have been paid with respect to any Securitization Entity or
Securitization Transaction have been paid as of the date hereof.

     Section 3.24 Leasing-Contract-Level Representations and Warranties.  The
Company makes the representations and warranties set forth below regarding each
Leasing Contract subject to a Warehouse Line or Securitization Transaction:

          (a) To the knowledge of the Company, each Leasing Contract was
     eligible (as determined in accordance with the provisions of the related
     Securitization Instruments or Warehouse Instruments, as the case may be, at
     the time of such financing or sale) for financing or sale under the
     applicable Warehouse Line or Securitization Transaction or has been
     repurchased. To the knowledge of the Company, as of the date hereof, there
     exists no fact or circumstance that would entitle, in accordance with the
     provisions of the related Securitization Instruments or Warehouse
     Instruments, as the case may be, (i) any entity that is a trustee for the
     benefit of securities holders in any Securitization Transaction, (ii) any
     lender under any Warehouse Line or (iii) any holder of securities issued in
     a Securitization Transaction to demand from the Company, any subsidiary of
     the Company or any Trust either the repurchase of any Leasing Contract or
     indemnification for losses.

          (b) The origination, sale, and servicing of the Leasing Contracts
     comply, in all material respects, with (i) all contractual obligations of
     the Company, any Subsidiary or any Trust with respect to any Securitization
     Transaction or Warehouse Line, (ii) all underwriting guidelines of the
     Company or any Subsidiary and (iii) all applicable federal, state and local
     legal and regulatory requirements applicable to the Company, any subsidiary
     of the Company or any Trust (including without limitation usury,
     truth-in-lending, consumer protection and equal credit opportunity laws),
     except where the failure to comply with such legal or regulatory
     requirement would not have a Material Adverse Effect on the Company.

          (c) No Leasing Contract is (i) a "consumer" lease under Article 2A of
     the Uniform Commercial Code or (ii) a consumer credit contract subject to
     the provisions of 16 CFR Part 433.

     Section 3.25 No Recourse.  None of the Securitization Instruments or the
Warehouse Lines provides for Recourse to the Company or any subsidiary of the
Company. For all purposes hereof, "Recourse" means any arrangement pursuant to
which the Company or any subsidiary of the Company bears the risk of any part of
the ultimate credit losses incurred in connection with a default under or
realization against a Leasing Contract not owned by the Company or any
subsidiary of the Company, except to the extent such risk of loss (i) is based
upon a breach by the Company or any subsidiary of the Company of any of their
contractual representations, warranties or covenants contained in any Warehouse
Line or Securitization Instrument or (ii) arises out of the beneficial ownership
of the Company or any subsidiary of the Company in a Trust.

     Section 3.26 Sufficiency of and Title to Assets.  Except as set forth in
Schedule 3.26, each of the Company and the Company Subsidiaries has title to, or
the right to use, all material assets, whether

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tangible or intangible, used in the operation of its business and such material
assets constitute all material assets necessary to operate the business of the
Company and the Company Subsidiaries (the "business") as a going concern
consistent with past practice.

     Section 3.27 Properties; Leases; Tangible Assets.

     (a) Neither the Company nor any of the Company Subsidiaries owns any real
property other than the real property identified on Schedule 3.27(a) (the "Owned
Real Property"). Neither the Company nor any of the Company Subsidiaries has a
leasehold interest in any real property other than the real property identified
on Schedule 3.27(a) (the "Leased Real Property"; the Owned Real Property and the
Leased Real Property are, collectively, the "Real Property"), which constitutes
all of the real property used in the business. True, complete and correct copies
of all lease agreements and amendments thereto with respect to properties
identified in Schedule 3.27(a) have been supplied to Buyer prior to the date
hereof. Each of the Company and each of the Company Subsidiaries has, and, upon
consummation of the transactions contemplated hereby, will continue to have,
good and marketable title to the Owned Real Property and a good and valid
leasehold interest in the Leased Real Property being leased by it, in either
case free and clear of all Liens and Encumbrances except Permitted Liens,
subject to obtaining the Required Consents with respect to any specific parcel
of Leased Real Property. None of the assets of the Company or any Company
Subsidiary is owned jointly with any other person, including any affiliates of
the Company. For purposes of this Agreement, "Permitted Liens" means (i) Liens
for Taxes or governmental assessments or similar obligations the payment of
which is not yet due and payable or delinquent, or for Taxes the validity of
which are being contested in good faith by appropriate proceedings; (ii)
statutory Liens of landlords and Liens of carriers, warehousemen, mechanics,
materialmen and other similar persons imposed by applicable law incurred in the
ordinary course of business for sums not yet delinquent or being contested in
good faith; (iii) Liens relating to deposits made in the ordinary course of
business in connection with workers' compensation, unemployment insurance and
other types of social security; (iv) Liens and Encumbrances specifically
identified on Schedule 3.27(a); and (v) Liens securing executory obligations
under any lease that constitutes an "operating lease" under GAAP. For purposes
of this Agreement, "Lien" means, with respect to any asset, any mortgage, title
defect or objection, lien, pledge, charge, security interest, hypothecation,
restriction, encumbrance or charge of any kind in respect of such asset.

     (b) Schedule 3.27(b) sets forth a true and complete list, as of the date
hereof, of (i) all personal property leases or licenses other than Leasing
Contracts (A) to which the Company or any of the Company Subsidiaries is a party
or by which the Company or any of the Company Subsidiaries is bound and (B) that
provide for annual payments by the Company or any of the Company Subsidiaries in
excess of $100,000 that cannot be terminated by the Company or the relevant
Company Subsidiary within 30 days without a charge of $25,000 or more to the
Company or any of the Company Subsidiaries (the "Personal Property Leases") and
(ii) all leases or licenses of Leased Real Property that provide for annual
payments by the Company or any of the Company Subsidiaries in excess of $100,000
that cannot be terminated by the Company or the relevant Company Subsidiary
within 30 days without a charge of $25,000 or more to the Company or any of the
Company Subsidiaries (the "Real Property Leases" and collectively with the
Personal Property Leases, the "Leases"). With respect to the Leases, except as
set forth on Schedule 3.27(b), there exist no defaults, in any material respect,
by the Company or any of the Company Subsidiaries, or, to the knowledge of the
Company, any default or threatened default, in any material respect, by any
lessor or third party thereunder. Assuming the required consents are obtained,
the consummation of the transactions contemplated hereby will not result in a
breach of, or give any person the right to terminate, any Lease to which the
Company or any of the Company Subsidiaries is a party or by which it is bound.

     (c) As of the date hereof, neither the Company nor any of the Company
Subsidiaries has received notice of any pending zoning or other land-use
regulation proceedings or any proposed change in any applicable laws that could
reasonably be expected to adversely affect, in any material respect, the use or
operation of any Real Property, nor has the Company or any of the Company
Subsidiaries received notice of any special assessment proceedings affecting the
Real Property, or applied for any change to the zoning or land use status of the
Real Property.

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     Section 3.28 Contracts.  (a) Schedule 3.28 sets forth a complete list, as
of the date hereof, of the following contracts, agreements, options, leases,
licenses, sales and purchase orders, commitments and other instruments of any
kind, whether written or oral, to which the Company or any Company Subsidiary is
a party on the date hereof, commitments and obligations (whether written or
oral) of the Company or any of the Company Subsidiaries that have not terminated
or expired in accordance with their terms (collectively the "Contracts"; the
Contracts, together with the Leases are, collectively, the "Scheduled
Contracts"):

          (i) all partnership, joint venture or other similar Contracts,
     arrangements or agreements;

          (ii) any employment, consulting, severance, change of control or
     management services contract or plan;

          (iii) any agreement relating to the acquisition of any business;

          (iv) any material indemnity or guaranty issued by the Company or any
     Company Subsidiary;

          (v) any contract or agreement restricting the right of the Company or
     any Company Subsidiary to engage in any business activity or compete with
     any business;

          (vi) any material license agreements, other than those relating to
     off-the-shelf, commercially available software;

          (vii) to the extent that any of the following provide for annual
     payments by the Company or any of the Company Subsidiaries in excess of
     $100,000 and cannot be terminated by the Company within 30 days without a
     charge to the Company or any of the Company Subsidiaries, all license,
     distribution, commission, marketing, agent, franchise, technical assistance
     or similar agreements relating to or providing for the marketing and/or
     sale of the products or services to which the Company or any of the Company
     Subsidiaries is a party or by which the Company or any of the Company
     Subsidiaries is otherwise bound;

          (viii) each Contract between the Company or any of the Company
     Subsidiaries and any supplier of services or products to the Company, under
     which the remaining, unfulfilled dollar volume of required purchases by the
     Company or any of the Company Subsidiaries exceeds $100,000 as of the date
     hereof that cannot be terminated by the Company or the relevant Company
     Subsidiary within 30 days without a charge of at least $25,000 or more to
     the Company or any of the Company Subsidiaries,

          (ix) each other Contract of the Company or any of the Company
     Subsidiaries that (A) requires the payment or incurrence of Liabilities or
     the rendering of services by the Company or any of the Company
     Subsidiaries, subsequent to the date of this Agreement, valued at more than
     $100,000 and (B) cannot be terminated by the Company or any of the Company
     Subsidiaries within 30 days without a charge to the Company or any of the
     Company Subsidiaries;

          (x) each agreement (other than Leasing Contract subject to a Warehouse
     Line or Securitization Transaction) evidencing the indebtedness of the
     related obligor(s), including, as applicable, schedules, supplements and
     amendments thereto, under which the Company, a Company Subsidiary or a
     third party from whom the Company or a Company Subsidiary acquired any such
     agreements or on behalf of whom the Company or any Company Subsidiary
     services any such agreement, as applicable, leases or finances specified
     equipment to an obligor.

          (xi) all other material Contracts, commitments and obligations of the
     Company and the Company Subsidiaries (other than any Leasing Contracts,
     Leases, Securitization Transaction or Warehouse Lines).

     (a) As of the date hereof, each Scheduled Contract is a legal, valid and
binding obligation of the Company or the relevant Company Subsidiary, as the
case may be, and, to the knowledge of the Company, each other party thereto,
enforceable against the Company or the relevant Company Subsidiary, as the case
may be, and, to the knowledge of the Company, each such other party in
accordance with its

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<PAGE>   123

terms, and neither the Company or any of the Company Subsidiaries, as the case
may be, nor, to the knowledge of the Company, any other party thereto is in
default or has failed to perform in any material respect thereunder.

     (b) The origination, sale, and servicing of the Leasing Contracts that are
not subject to a Warehouse Line or Securitization Transaction comply, in all
material respects, with (i) all underwriting guidelines of the Company or any
Company Subsidiary as of the related date of origination, sale or servicing and
(ii) all applicable federal, state and local legal and regulatory requirements
applicable to the Company, any subsidiary of the Company (including without
limitation usury, truth-in-lending, consumer protection and equal credit
opportunity laws) as of the related date of origination, sale or servicing.

     (c) No Leasing Contract that is not subject to a Warehouse Line or
Securitization Transaction is (i) a "consumer" lease under Article 2A of the
Uniform Commercial Code or (ii) a consumer credit contract subject to the
provisions of 16 CFR Part 433.

     Section 3.29 Related Party Transactions.  No Related Party (as defined
below), as of the date hereof: (i) has any contractual or other claim, express
or implied, or of any kind whatsoever against the business, the Company, or any
Company Subsidiary; (ii) has any interest in the business, the Company or any
Company Subsidiary (other than through the ownership of Shares or Company Stock
Options); or (iii) is or has been during the last twelve month engaged in any
other transaction with the business, the Company or any Company Subsidiary. As
used herein, "Related Party" means any officer or director of the Company or any
Company Subsidiary, or any affiliate or associate of any the foregoing.

     Section 3.30 Balance Sheet Transactions.  Schedule 3.30 fairly and
accurately summarizes in all material respects the actions the Company proposes
to take to cause the identified lease portfolio assets to not be characterized
as assets on the Company's consolidated balance sheet prepared in accordance
with GAAP following the Closing. The Company is not aware of any reason why all
such actions could not be completed in all material respects prior to or
simultaneously with the Closing.

     Section 3.31 Lease Portfolio Transactions.  Schedule 3.31 fairly and
accurately summarizes in all material respects the Company's plan for selling,
liquidating or refinancing the specified lease portfolio assets. The Company is
not aware of any reason why all such actions could not be completed in all
material respects prior to or simultaneously with the Closing.

     Section 3.32 Inapplicability of Section 2115 of California Corporations
Code.  The Company is not subject to Section 2115 of the California Corporations
Code.

     Section 3.33 Certain Business Practices.  None of the Company, any of its
subsidiaries, or (to the best of the knowledge of the Company) no director,
officer, agent or employee of the Company or any of its subsidiaries, has (i)
used any funds for unlawful contributions, gifts, entertainment or other
unlawful expenses relating to political activity, (ii) made any unlawful payment
to foreign or domestic government officials or employees or to foreign or
domestic political parties or campaigns or violated any provision of the Foreign
Corrupt Practices Act of 1977, as amended, or (iii) made any other unlawful
payment.

     Section 3.34 Insurance.  The Company has made available to Parent a copy of
all material insurance policies and all material self insurance programs and
arrangements relating to the business, assets and operations of the Company and
it subsidiaries. Each of such insurance policies is in full force and effect.
Such insurance policies are adequate for the conduct of the Company's business
as conducted on the date hereof and similar in all material respects to that of
similarly-situated companies. Since January 1, 1998, neither the Company nor any
of its subsidiaries has received any notice or other communication regarding any
actual or possible (a) cancellation or invalidation of any insurance policy, (b)
refusal of any coverage or rejection of any material claim under any insurance
policy, or (c) material adjustment in the amount of the premiums payable with
respect to any insurance policy. There is no pending workers' compensation or
other claim under or based upon any insurance policy of the Company or any of
its subsidiaries.

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                                   ARTICLE IV

            REPRESENTATIONS AND WARRANTIES OF PARENT AND ACQUISITION

     Parent and Acquisition represent and warrant to the Company that, except as
set forth in the Parent's Schedule of Exceptions or the Parent SEC Filings:

     Section 4.1 Organization and Qualification.  Each of Parent and Acquisition
is a corporation duly organized, validly existing and in good standing under the
laws of its state of incorporation and has all requisite corporate power and
authority to own or lease and operate its properties and assets and to carry on
its business as it is now being conducted. Each of Parent and Acquisition is
duly qualified as a foreign corporation to do business, and is in good standing,
in each jurisdiction in which the character of its properties and assets owned
or leased or the nature of its activities makes such qualification necessary,
except where the failure to be so qualified would constitute a Material Adverse
Effect.

     Section 4.2 Authorization of Agreement, Non-Contravention, Etc.

     (a) Each of Parent and Acquisition has all requisite corporate power and
authority to execute and deliver this Agreement and to perform its obligations
hereunder. The execution, delivery and performance of this Agreement by each of
Parent and Acquisition and the consummation by each of them of the transactions
contemplated hereby have been duly authorized by all necessary corporate and
stockholder action on the part of each of Parent and Acquisition. This Agreement
has been duly executed and delivered by each of Parent and Acquisition and
constitutes the legal, valid and binding obligation of each of Parent and
Acquisition, enforceable against each of Parent and Acquisition in accordance
with its terms. The execution and delivery of this Agreement by each of Parent
and Acquisition does not, and the consummation by Acquisition of the
transactions contemplated hereby will not, (i) conflict with any provision of
the Articles of Incorporation and By-Laws of Parent and the Certificate of
Incorporation or By-Laws of Acquisition, (ii) result (with the giving of notice
or the lapse of time or both) in any violation of or default or loss of a
benefit under, or permit the acceleration of any obligation under any mortgage,
indenture, lease, agreement or other instrument, permit, concession, grant,
franchise, license, judgment, order, decree, statute, law, ordinance, rule or
regulation applicable to Parent, its subsidiaries or their respective properties
or (iii) result in the creation or imposition of any lien, charge or encumbrance
of any nature whatsoever upon any asset of Parent, its subsidiaries or their
respective properties, other than (in the case of clauses (ii) and (iii) above)
such as would not, individually or in the aggregate, have a Material Adverse
Effect. No consent, approval, order or authorization of, or registration,
declaration or filing with, any Governmental Entity is required to be made or
obtained by Parent or Acquisition in connection with the execution and delivery
of this Agreement by Parent or Acquisition or the consummation by Parent or
Acquisition of the transactions contemplated hereby, except for (i) compliance
by Parent with the HSR Act and similar statutes or regulations of foreign
jurisdictions, (ii) the filing of the Certificate of Merger with the Secretary
of State of the State of Delaware in accordance with the DGCL and (iii) the
filing with the SEC of (1) the Offer Documents and (2) such reports under and
such other compliance with the Exchange Act and Securities Act and the rules and
regulations thereunder as may be required in connection with this Agreement and
the transactions contemplated hereby. Except pursuant to the Tender Agreements,
as of the date hereof, Parent does not beneficially own any Shares.

     (b) Each of the Parent and Acquisition have all approvals, authorizations,
certificates, consents, licenses, orders, permits, qualifications or other
similar authorizations of all Governmental Authorities that are required as of
the date hereof by any Governmental Authority to allow each of Parent and
Acquisition to operate its business as currently operated, except for such
approvals, authorizations, certificates, consents, licenses, orders, permits,
qualifications or other similar authorizations the failure of which to obtain
would not constitute a Material Adverse Effect (the "Parent Permits"). No
Required Governmental Approval is required under applicable law to be obtained
by Parent or any Parent subsidiary by virtue of the execution and delivery of
this Agreement or the consummation of the transactions contemplated hereby
pursuant to any Parent Permit. None of the Parent Permits will be terminated or

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become terminable or impaired as a result of the transactions contemplated
hereby so as to have a Material Adverse Effect.

     Section 4.3 Capitalization.  The authorized capital stock of Parent
consists of 1,000,000,000 Parent Shares and 10,000,000 shares of preferred
stock, 250,000 of which have been designated Series A 6.00% Convertible
Redeemable Preferred Stock ("Series A Preferred"). As of November 2, 2000,
87,540,058 Parent Shares were outstanding, all of which were duly and validly
issued, are fully paid and nonassessable and were not issued in violation of any
preemptive or similar right and 101,450 shares of Series A Preferred were
outstanding. The Parent Shares issuable under the Parent Plans as of October 31,
2000 are as set forth in the Parent's Schedule of Exceptions Except as set forth
herein or for Parent Shares issued under the Parent Plans since such date, no
subscription, warrant, option, convertible security, stock appreciation or other
right (contingent or other) to purchase or acquire, or any securities
convertible into or exchangeable or exercisable for, any shares of or other
interest in any class of capital stock of Parent or is authorized or outstanding
and there is no commitment of Parent to issue any shares, warrants, options or
other such rights or to distribute to holders of any class of its capital stock
any evidences of indebtedness or assets. Neither Parent nor any subsidiary has
any obligation (contingent or other) to purchase, redeem or otherwise acquire
any shares of its capital stock or any interest therein or to pay any dividend
or make any other distribution in respect thereof, other than as required by the
terms of securities outstanding on the date hereof.

     Section 4.4 SEC Filings.  Parent has made available to the Company true and
complete copies of each form, report, schedule, definitive proxy statement and
registration statement filed by Parent with the SEC subsequent to January 1,
1999 and on or prior to the date hereof (collectively, the "Parent SEC
Filings"), which are all forms, reports, schedules, statements and other
documents (other than preliminary material) that Parent was required to file
with the SEC. The Parent SEC Filings (including, without limitation, any
financial statements or schedules included therein) (i) were prepared in
material compliance with the requirements of the Securities Act or the Exchange
Act, as the case may be, and (ii) did not at the time of filing (or if amended,
supplemented or superseded by a filing prior to the date hereof, on the date of
that filing) contain any untrue statement of a material fact or omit to state a
material fact required to be stated therein or necessary in order to make the
statements therein, in the light of the circumstances under which they were
made, not misleading.

     Section 4.5 Financial Statements.  Schedule 4.5 includes the consolidated
balance sheet of the Parent as of September 30, 2000 and the consolidated
statement of operations for the three and nine month periods ended September 30,
2000. The consolidated financial statements of Parent included in the Parent SEC
Filings or Schedule 4.5 have been prepared in accordance with GAAP consistently
applied and consistent with prior periods, subject, in the case of unaudited
interim consolidated financial statements, to year-end adjustments (which
consist of normal recurring accruals) and the absence of certain footnote
disclosures. The consolidated balance sheets of Parent included in the Parent
SEC Filings or on Schedule 4.5 fairly present in all material respects the
consolidated financial position of Parent as of their respective dates, and the
related consolidated statements of operations, cash flows and stockholders'
equity included in the Parent SEC Filings or on Schedule 4.5 fairly present in
all material respects the consolidated results of operations of Parent for the
respective periods then ended, subject, in the case of unaudited interim
financial statements, to year-end adjustments (which consist of normal recurring
accruals) and the absence of certain footnote disclosures. None of Parent and
its subsidiaries has any liabilities or obligations (whether absolute, accrued,
contingent or otherwise) of a nature required by GAAP to be reflected in a
consolidated balance sheet, except for those (i) that are accrued or reserved
against in Parent's financial statements (or accurately reflected in the notes
thereto) included in the Parent SEC Filings or on Schedule 4.5 or (ii) that were
incurred subsequent to September 30, 2000 in the ordinary course of business and
consistent with past practice and do not constitute a Material Adverse Effect.

     Section 4.6 Absence of Certain Changes or Events.  Since September 30,
2000, (i) Parent and its subsidiaries have conducted their respective business
only in the ordinary course, (ii) there has not been

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any Material Adverse Effect with respect to Parent and (iii) neither Parent nor
any subsidiary has taken any action contemplated by Section 5.2.

     Section 4.7 Parent Shares.  All of the Parent Shares issuable in exchange
for Shares in the Offer and the Merger in accordance with this Agreement will
be, when so issued, duly authorized, validly issued, fully paid and
non-assessable and free of preemptive rights. The issuance of such Parent Shares
will be registered under the Securities Act and registered or exempt from
registration under applicable state securities laws.

     Section 4.8 Information Supplied.

     (a) Each of the Offer Documents and the other documents required to be
filed by Parent with the SEC in connection with the Offer, the Merger and the
other transactions contemplated hereby, and the information supplied by Parent
to the Company in connection with the Schedule 14D-9, will comply as to form, in
all material respects, with the requirements of the Exchange Act and the
Securities Act, as the case may be, and will not, on the date of its filing or
dissemination, as the case may be, contain any untrue statement of a material
fact or omit to state any material fact required to be stated therein or
necessary in order to make the statements therein, in light of the circumstances
under which they are made, not misleading.

     (b) Notwithstanding the foregoing provisions of this Section 4.8, no
representation or warranty is made by Parent with respect to statements made or
incorporated by reference in the Offer Documents based on information supplied
by the Company expressly for inclusion or incorporation by reference therein or
based on information which is not made in or incorporated by reference in such
documents but which should have been disclosed pursuant to Section 3.11.

     Section 4.9 Reorganization.  Neither Parent nor any of its affiliates has
taken, failed to take or agreed to take any action or knows of any fact,
circumstance, plan or intention that is or would be reasonably likely to prevent
the Transaction from qualifying as a "reorganization" within the meaning of
Section 368(a) of the Code.

     Section 4.10 Operations and Assets of Acquisition.  Acquisition was formed
solely for the purpose of the Merger and engaging in the transactions
contemplated hereby and has no assets or liabilities, and will have no assets or
liabilities, except as necessary for such purpose. Acquisition has not engaged,
and will not engage, in any other business or activity of any kind or type
whatsoever and has conducted and will conduct its operations only as
contemplated hereby.

     Section 4.11 Brokers.  Except for Morgan Stanley Dean Witter, no person is
entitled any brokerage, finder's, financial advisor's or other similar fee or
commission in connection with the transactions contemplated by this Agreement
and as a result of any action taken by or on behalf of Parent or any of its
subsidiaries.

                                   ARTICLE V

                               CERTAIN AGREEMENTS

     Section 5.1 Conduct of the Company's Business.  The Company covenants and
agrees that, prior to the date designees of Parent constitute a majority of the
members of the Board of Directors of the Company, unless Parent shall otherwise
consent in advance in writing (such consent not to be unreasonably withheld or
delayed) or as set forth in Schedule 5.1 or as otherwise expressly contemplated
by this Agreement:

          (a) the business of the Company and the subsidiaries shall be
     conducted only in, and the Company and the subsidiaries shall not take any
     action except in, the ordinary course of business and consistent with past
     practice and each of the Company and the subsidiaries shall use its
     commercially reasonable efforts to maintain its relationships with its
     suppliers, customers and employees;

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          (b) neither the Company nor any subsidiary shall: (i) except as
     contemplated hereby, amend its Certificate of Incorporation or By-Laws (or
     similar organizational documents), (ii) issue, sell, pledge or dispose of
     any shares of, or securities convertible or exchangeable for, or any
     options, warrants or rights of any kind to acquire any shares of, its
     capital stock, provided that the Company may issue Shares upon the exercise
     of currently outstanding Company Stock Options, (iii) split, combine or
     reclassify any outstanding shares of its capital stock, or declare, set
     aside or pay any dividend payable in cash, stock, property or otherwise
     with respect to such shares (except for any dividends paid to the Company
     or to any wholly-owned subsidiary), (iv) other than with respect to
     outstanding securities, redeem, purchase, acquire or offer to acquire any
     shares of, or securities convertible into or exchangeable for, or any
     options, warrants or rights of any kind to acquire any shares of, its
     capital stock, or (v) amend or waive any of its rights under, or accelerate
     the vesting under, any provision of any of the Company Stock Plans, any
     provision of any agreement evidencing any outstanding stock option or any
     restricted stock purchase agreement, or otherwise modify any of the terms
     of any outstanding option, warrant or other security.

          (c) neither the Company nor any subsidiary shall: (i) sell, pledge,
     dispose of or encumber any material assets of the Company or any
     subsidiary, except Leasing Contracts or inventory or in the ordinary course
     of business and consistent with past practice, (ii) acquire (by merger,
     consolidation or acquisition of stock or assets) any corporation,
     partnership or other business organization or division thereof (except an
     existing wholly-owned subsidiary), (iii) incur any indebtedness for
     borrowed money or issue any debt securities, except for (1) indebtedness
     incurred to extend, refinance, or restructure current financing facilities
     with existing warehouse lenders on terms substantially similar to the
     existing terms of such facilities, (2) indebtedness resulting from the
     origination and financing of lease contracts through existing origination
     channels in the ordinary course of business and consistent with past
     practice; provided, however, that any indebtedness incurred to finance the
     acquisitions of lease portfolios shall be limited to $2,000,000 (calculated
     by aggregate principal amount of the portfolios purchased) for each
     individual lease portfolio purchase and $10,000,000 (calculated by
     aggregate principal amount of the portfolios purchased) for all lease
     portfolio purchases in the aggregate, and (3) any indebtedness incurred in
     connection with the transactions contemplated in Sections 5.13 and 5.14
     hereof, (iv) enter into, terminate, renew or modify any material contract,
     lease, agreement or commitment, except in the ordinary course of business
     and consistent with past practice, (v) terminate, modify, assign, waive,
     release or relinquish any material contract rights or amend any material
     rights or claims not in the ordinary course of business;

          (d) except (i) pursuant to applicable law or regulation or the terms
     of employment agreements in effect on the date hereof and (ii) in the case
     of employees who are not executive officers of the Company, in the ordinary
     course of business and consistent with past practice, neither the Company
     nor any subsidiary shall grant any increase in the salary or other
     compensation of its employees, or grant any bonus to any employee other
     than bonuses that are immaterial in amount to employees who are not
     executive officers of the Company or enter into any employment agreement or
     make any loan to or enter into any material transaction of any other nature
     with any employee of the Company or any subsidiary;

          (e) except (i) for salary increases for employees who are not
     executive officers (as determined pursuant to Rule 16a-1 promulgated under
     the Exchange Act) of the Company in the ordinary course of business and
     consistent with past practice and (ii) pursuant to employment agreements
     with persons who are hired or promoted at the level of Vice President or
     below or with an annual base salary less than $100,000 in the ordinary
     course of business and consistent with past practice, neither the Company
     nor any subsidiary shall adopt or amend, in any respect, except as
     contemplated hereby or as may be required by applicable law or regulation
     or the terms of agreements in effect on the date hereof, any collective
     bargaining, bonus, profit sharing, compensation, stock option, restricted
     stock, pension, retirement, deferred compensation, employment or other
     employee benefit plan, agreement, trust, fund, plan or arrangement for the
     benefit or welfare of any directors, officers or employees

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     (including, without limitation, any such plan or arrangement relating to
     severance or termination pay);

          (f) neither the Company nor any subsidiary shall commit to do any of
     the foregoing or take any action that would make any representation or
     warranty of the Company hereunder inaccurate in any respect at, or as of
     any time prior to, the Effective Time, or omit to take any action necessary
     to prevent any such representation or warranty from being inaccurate in any
     respect at any such time;

          (g) neither the Company nor any Company Subsidiary shall purchase or
     otherwise acquire material tangible or intangible assets from any other
     person other than Leasing Contracts or in the ordinary course of business;

          (h) neither the Company nor the Company Subsidiaries (individually or
     in the aggregate) shall make or commit to make any capital expenditure, or
     group of related capital expenditures, in excess of $250,000 in the
     aggregate, other than those related to capital expenditures expressly
     required under any Scheduled Contract;

          (i) except for the legal proceeding set forth on Schedule 5.1(a)(i)
     hereto (for which the Company shall be entitled to settle or commit to
     settle in the amount of up to $575,000), neither the Company nor the
     Company Subsidiaries shall settle or commit to settle any legal proceeding
     in excess of $250,000 in the aggregate; or

          (j) neither the Company nor any Company Subsidiary shall enter into
     any Securitization Transaction.

     Section 5.2 Conduct of Parent's Business.  Parent covenants and agrees
that, prior to the Effective Time, unless the Company shall otherwise consent in
writing (such consent not to be unreasonably withheld or delayed) or as set
forth in Schedule 5.2 or as otherwise expressly contemplated by this Agreement:

          (a) Parent shall not, directly or indirectly, do any of the following:
     (i) amend or propose to amend its Certificate of Incorporation or By-Laws,
     (ii) split, combine or reclassify any outstanding shares of its capital
     stock, or declare, set aside or pay any dividend payable in cash, stock,
     property or otherwise with respect to such shares, other than as required
     by the terms of securities outstanding on the date hereof, (iii) redeem,
     purchase, acquire or offer to acquire (or permit any subsidiary to redeem,
     purchase, acquire or offer to acquire) any shares of its capital stock,
     other than as required by the terms of securities outstanding on the date
     hereof, or (iv) enter into any contract, agreement, commitment or
     arrangement with respect to any of the matters set forth in this paragraph
     (a); and

          (b) Parent shall not take any action that would make any
     representation or warranty of Parent or Acquisition hereunder inaccurate in
     any respect at, or as of any time prior to, the Effective Time, or omit to
     take any action necessary to prevent any such representation or warranty
     from being inaccurate in any respect at any such time.

     Section 5.3 Stockholder Approval; Preparation of Proxy Statement.

     (a) If the Company Stockholder Approval is required by law, the Company
shall, as promptly as practicable following the expiration of the Offer, duly
call, give notice of, convene and hold a meeting of its stockholders (the
"Stockholders Meeting") for the purpose of obtaining the Company Stockholder
Approval. Subject to Section 5.6(b) hereof, the Company shall, through its Board
of Directors, recommend to its stockholders that the Company Stockholder
Approval be given. Notwithstanding the foregoing, if Parent or Acquisition shall
acquire beneficial ownership of at least 90% of the outstanding Shares, the
parties shall take all necessary and appropriate action to cause the merger of
Acquisition and the Company to become effective as soon as practicable after the
expiration of the Offer without a Stockholders Meeting in accordance with the
short form merger provisions of the DGCL.

     (b) If the Company Stockholder Approval is required by law, Parent shall,
as soon as practicable following the expiration of the Offer, prepare and file
with the SEC a post-effective amendment to the

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Form S-4 (the "Post-Effective Amendment") which shall include a preliminary
Proxy Statement as a prospectus and shall use all reasonable efforts to respond
to any comments of the SEC or its staff and to cause the Form S-4 to be declared
effective, and the Proxy Statement to be mailed to the Company's stockholders,
as promptly as practicable. Parent shall notify the Company promptly of the
receipt of any comments from the SEC or its staff and of any request by the SEC
or its staff for amendments or supplements to the Form S-4 or for additional
information and will supply the Company with copies of all correspondence
between Parent or any of its representatives, on the one hand, and the SEC or
its staff, on the other hand, with respect to the Form S-4 or the Merger. Parent
shall give the Company an opportunity to comment on any correspondence with the
SEC or its staff or any proposed material to be included in the Form S-4 prior
to transmission to the SEC or its staff and shall not transmit any such material
to which the Company reasonably objects. If at any time prior to the
Stockholders Meeting there shall occur any event that should be set forth in an
amendment or supplement to the Form S-4, Parent shall promptly prepare and mail
to the Company stockholders such an amendment or supplement.

     (c) Parent agrees to cause all Shares owned by Parent or any subsidiary of
Parent to be voted in favor of the Company Stockholder Approval.

     Section 5.4 Access to Information.

     (a) Each of the Company and Parent shall, and shall cause the subsidiaries
and its and their respective officers, directors, employees, representatives and
agents to, afford, from the date hereof to the Effective Time, the officers,
employees, representatives and agents of the other reasonable access during
regular business hours to its officers, employees, agents, properties, books,
records and workpapers, and shall promptly furnish the other all financial,
operating and other information and data as the other, through its officers,
employees or agents, may reasonably request.

     (b) Except as required by law, the Company and Parent shall hold, and will
cause its respective officers, employees, representatives and agents to hold,
any confidential information of the Company or any of its subsidiaries in
accordance with the Confidentiality Agreement between the Company and Parent.

     (c) No investigation pursuant to this Section 5.4 shall affect, add to or
subtract from any representations or warranties of the parties hereto or the
conditions to the obligations of the parties hereto to effect the Merger.

     Section 5.5 Further Actions.

     (a) Subject to the terms and conditions herein provided, each of the
parties hereto agrees to use all reasonable efforts to take, or cause to be
taken, all actions, and to do, or cause to be done, all things reasonably
necessary, proper or advisable under applicable laws and regulations to
consummate and make effective the transactions contemplated by this Agreement as
promptly as practicable, including, without limitation, (i) cooperating in the
preparation and filing of the Offer Documents and the Schedule 14D-9, any
filings that may be required under the HSR Act or similar governmental legal
requirements, and any amendments to any thereof, (ii) obtaining consents of all
third parties and Governmental Entities necessary, proper or advisable for the
consummation of the transactions contemplated by this Agreement, (iii)
contesting any legal proceeding relating to the Offer or the Merger and (iv)
executing any additional instruments necessary to consummate the transactions
contemplated hereby. Parent shall make the required filing under the HSR Act no
later than November 14, 2000. The parties shall respond to any comments of the
staff of the SEC regarding the Offer Documents or the Schedule 14D-9 as soon as
practicable but no later than within five business days of the receipt thereof.
Subject to the terms and conditions of this Agreement, Parent and the Company
agree to use all reasonable efforts to cause the Effective Time to occur as soon
as practicable. In case at any time after the Effective Time any further action
is necessary to carry out the purposes of this Agreement, the proper officers
and directors of each party hereto shall take all such necessary action. Parent
shall cause Acquisition to comply with its obligations under this Agreement.

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<PAGE>   130

     (b) Parent shall use all reasonable efforts to cause the Parent Shares to
be issued upon the consummation of the Offer and in the Merger to be approved
for listing on the Nasdaq, subject to official notice of issuance, as promptly
as practicable after the date hereof.

     Section 5.6 Inquiries and Negotiations.

     (a) From and after the date hereof until the termination of this Agreement
and except as expressly permitted by the following provisions of this Section
5.6, the Company will not, and will it not permit any of its subsidiaries to,
and will it not authorize any officer, director or employee of or any investment
banker, attorney, accountant or other advisor or representative of, the Company
or any of its subsidiaries to (and will instruct such persons not to), directly
or indirectly, (i) solicit, initiate or encourage the submission of a proposal
for any Alternative Transaction (as hereinafter defined) or (ii) participate in
any discussions or negotiations regarding, or furnish to any person (which
includes a "person" as such term is defined in Section 13(d)(3) of the Exchange
Act) other than Parent, Acquisition or any affiliate thereof (a "Third Party")
any information with respect to, or take any other action knowingly to
facilitate, any Alternative Transaction or any inquiries or the making of any
proposal that constitutes, or may reasonably be expected to lead to, any
Alternative Transaction; provided, however, that nothing contained in this
Section 5.6(a) shall prohibit the Company Board from furnishing information to,
or entering into discussions or negotiations with, any Third Party that makes an
unsolicited bona fide written proposal of an Alternative Transaction if, and
only to the extent that (A) the Company Board, after consultation with outside
legal counsel, determines in good faith that such action is necessary for the
Company Board to comply with its fiduciary duties to the Company's stockholders
under applicable law, (B) the Company Board determines in good faith, after
consultation with a financial advisor of nationally recognized reputation, that
such Alternative Transaction would, if consummated, constitute or be reasonably
like to constitute a Superior Proposal (as hereinafter defined) and (C) prior to
taking such action, the Company (x) provides reasonable notice to Parent to the
effect that it is taking such action (including, without limitation, the
material terms and conditions thereof and the identity of the person making it)
as promptly as practicable (but in no case later than 24 hours) after its
receipt thereof, (y) provides Parent with a copy of any Alternative Transaction
or amendments or supplements thereto and (z) receives from such Third Party an
executed confidentiality agreement in reasonably customary form and in any event
containing terms at least as stringent as those between Parent and the Company,
provided that such confidentiality agreement need not contain any "standstill"
provisions. Subsequent to furnishing information to, or entering into
discussions or negotiations with, any Third Party in accordance with this
Section 5.6, the Company shall inform Parent on a prompt basis of the status of
any discussions or negotiations with such Third Party, and any material changes
to the terms and conditions of such Alternative Transaction. Promptly after the
execution and delivery of this Agreement, the Company will, and will cause its
subsidiaries to, and will instruct their respective officers, directors,
employees, investment bankers, attorneys, accountants and other agents to, cease
and terminate any existing activities, discussions or negotiations with any
parties conducted heretofore with respect to any possible Alternative
Transaction and shall notify each party that it, or any officer, director,
investment advisor, financial advisor, attorney or other representative retained
by it, has had discussions with during the 60 days prior to the date of this
Agreement that the Company Board no longer seeks the making of any Alternative
Transaction. Nothing in this Section 5.6(a) shall prevent the Company from
waiving any existing "standstill" provisions to the extent such provisions would
prevent a Third Party from proposing an Alternative Transaction.

     (b) The Company Board will not (x) withdraw or modify, or propose to
withdraw or modify, in a manner adverse to Parent, its approval or
recommendation of the Offer, the Merger or this Agreement or (y) approve or
recommend an Alternative Transaction unless the Company Board, after
consultation with outside legal counsel, determines in good faith that such
action is necessary for the Company Board to comply with the fiduciary duties to
the Company's stockholders under applicable Law; provided, however, the Company
Board may not approve or recommend (and in connection therewith, withdraw or
modify its approval or recommendation of this Agreement, the Merger or the
Offer) an Alternative Transaction unless (i) such Alternative Transaction is a
Superior Proposal, (ii) the Company Board shall have first consulted with
outside legal counsel and have determined that such action is necessary for the
Company

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<PAGE>   131

Board to comply with its fiduciary duties to the Company's stockholders, (iii)
the Company Board has provided written notice to Parent (a "Notice of Superior
Proposal") advising Parent that the Company Board of Directors has received a
Superior Proposal, specifying the material terms and conditions of such Superior
Proposal and identifying the person making such Superior Proposal, and (iv) two
business days have elapsed after Parent's receipt of the Notice of Superior
Proposal and Parent has not made an offer such that the Company Board determines
in its good faith judgment (after consultation with a financial adviser of
nationally recognized reputation and consultation with outside legal counsel)
that the Alternative Transaction is not a Superior Proposal. If Parent makes an
offer as contemplated by clause (iv) of the preceding sentence, upon the
Company's request Parent shall execute an amendment to this Agreement to
implement the terms contemplated by such offer. The Company shall not be
entitled to enter into any agreement (other than a confidentiality agreement)
with respect to an Alternative Transaction unless and until this Agreement is
terminated by its terms pursuant to Section 7.1(c) and the Company has paid all
amounts due to Parent pursuant to Section 8.2.

     Nothing contained in this Section 5.6(b) shall prohibit the Company from
taking and disclosing to its stockholders a position contemplated by Rule
14e-2(a) promulgated under the Exchange Act or from making any disclosure to the
Company's stockholders which, in the good faith reasonable judgment of the
Company Board, based on the advice of outside legal counsel, is required under
applicable Law; provided, that except as otherwise permitted in this Section
5.6(b), the Company shall not withdraw or modify, or propose to withdraw or
modify, its position with respect to the Offer, the Merger or this Agreement or
approve or recommend, or propose to approve or recommend, an Alternative
Transaction. Notwithstanding anything contained in this Agreement to the
contrary, any action by the Company Board permitted by, and taken in accordance
with, this Section 5.6(b) shall not constitute a breach of this Agreement by the
Company. Notwithstanding anything in this Agreement to the contrary but subject
to the proviso contained in the first sentence of Section 5.6(b) hereof, nothing
in this Agreement shall (x) limit the Board's ability to make any disclosure to
the Company's stockholders that the Board determines in good faith (after
consultation with outside counsel) is required to be made to satisfy its
fiduciary duties under applicable law or (y) limit the Company's ability to make
any disclosure required by applicable law, and such actions shall not be
considered a breach of this Agreement.

     (c) For all purposes of this Agreement, "Alternative Transaction" means the
occurrence of any of the following events: (i) the acquisition of the Company by
merger or otherwise by any Third Party, (ii) the acquisition by a Third Party of
20% or more of the assets of the Company and its subsidiaries taken as a whole,
(iii) the acquisition by a Third Party of 20% or more of the outstanding Shares
or the issuance by the Company of capital stock containing terms which are
inconsistent with the consummation of the transactions contemplated by this
Agreement, (iv) the adoption by the Company of a plan of liquidation or the
declaration or payment of an extraordinary dividend representing 20% or more of
the value of the Company and its subsidiaries taken as a whole or (v) the
repurchase by the Company or any of its subsidiaries of more than 20% of the
outstanding Shares.

     For all purposes of this Agreement, a "Superior Proposal" means any bona
fide written unsolicited proposal of an Alternative Transaction (except that,
for purposes of the definition of Superior Proposal, 50% shall be substituted
for 20% wherever it appears in the definition of Alternative Transaction) that
the Company Board determines in its good faith judgment (after consultation with
a financial advisor of nationally recognized reputation and consultation with
outside legal counsel) (i) would result in a transaction, if consummated, that
would be superior to the Company's stockholders from a financial point of view
as compared to the transactions contemplated hereby and any alternative proposed
by Parent or Acquisition in accordance with Section 5.6(b) and (ii) to be
reasonably capable of being consummated in accordance with its terms (including
that any financing required to consummate the transaction contemplated by such
proposal is capable of being, and is reasonably likely to be, obtained), in each
case taking into account all factors the board considers relevant, including all
legal, financial, regulatory and other aspects of the proposal and the Third
Party.

     Section 5.7 Notification of Certain Matters, Etc.  The Company shall give
prompt notice to Parent, and Parent shall give prompt notice to the Company, of
(i) the occurrence, or failure to occur, of any

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event that such party believes would be likely to cause any of its
representations or warranties contained in this Agreement to be untrue or
inaccurate in any material respect (ignoring any materiality qualifiers in such
representations and warranties) at any time from the date hereof to the
Effective Time, (ii) any material failure of the Company or Parent, as the case
may be, or any officer, director, employee or agent thereof, to comply with or
satisfy any covenant, condition or agreement to be complied with or satisfied by
it hereunder (ignoring any materiality qualifiers in such covenants, conditions
and agreements), provided, however, that failure to give such notice shall not
constitute a waiver of any defense that may be validly asserted, (iii) any
comments it or its counsel may receive from any Governmental Entity with respect
to the transactions contemplated hereby and (iv) the commencement of any action,
suit, hearing, arbitration, proceedings (public or private), governmental
investigations, audit, subpoena or notice of violation, brought by or against
any Governmental Entity or any other person, involving the Company or any of its
subsidiaries that constitutes a Material Adverse Effect.

     Section 5.8 Indemnification.

     (a) Parent will provide, until the sixth anniversary of the Closing Date,
the directors and officers of the Company who are currently covered by the
Company's existing insurance and indemnification policy an insurance and
indemnification policy that provides coverage for events occurring prior to the
Effective Time (the "D&O Insurance") that is no less favorable than the
Company's existing policy or, if substantially equivalent coverage is
unavailable, the best available coverage, provided, that Parent shall not be
required to pay an annual premium for the D&O Insurance in excess of 150% of the
last annual premium paid by the Company prior to the date hereof, but in such
case shall purchase as much coverage as possible for such amount.

     (b) All rights to indemnification existing in favor of those Persons who
are or prior to the date hereof were directors and officers of the Company or
any subsidiary (the "Indemnified Persons") for their acts and omissions
occurring prior to the Effective Time, as provided in the Company's certificate
of incorporation or bylaws (or similar organizational documents of any
subsidiary) (as in effect as of the date of this Agreement) and as provided in
the indemnification agreements between the Company and said Indemnified Persons
(as in effect as of the date of this Agreement) in the forms disclosed by the
Company to Parent prior to the date of this Agreement, shall survive the Merger
and shall be observed by the Surviving Corporation to the fullest extent
available under Delaware law for a period of six years from the Effective Time
(or, if any claims are pending on such date, until the resolution thereof). From
and after the Effective Time, Parent shall cause the Surviving Corporation to
comply with its obligations under this Section 5.8(b).

     (c) This Section 5.8 shall survive the consummation of the Merger, is
intended to benefit the Indemnified Parties and their heirs and representatives,
and shall be binding on the successors and assigns of Parent and the Surviving
Corporation.

     Section 5.9 Employee Benefits.

     (a) Until the first anniversary of the Effective Time, Parent will cause
the Surviving Corporation to provide health and welfare benefits which are no
less favorable, in the aggregate, to those that are available to similarly
situated employees of the Parent under health and welfare benefit plans
maintained by the Parent, provided that nothing in this Section 5.9(b) shall be
deemed to prevent the Surviving Corporation or any of its subsidiaries from
making any change required by applicable law.

     (b) To the extent permitted under applicable law, each employee of the
Company or its subsidiaries shall be given credit for all service with the
Company or its subsidiaries (or service credited by the Company or its
subsidiaries) under all employee benefit plans, programs, policies and
arrangements maintained by Parent or the Surviving Corporation in which they
participate or in which they become participants for purposes of eligibility,
vesting and benefit accrual including, without limitation, for purposes of
determining (i) short-term and long-term disability benefits, (ii) severance
benefits, (iii) vacation benefits and (iv) benefits under any retirement plan.

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     (c) The Company agrees to cause all Company Plans that are intended to be
"qualified" within the meaning of section 401(a) of the Code to terminate on or
before the Closing Date.

     Section 5.10 Section 16 Matters.  Prior to the Effective Time, Parent and
the Company shall take all such steps as may be required to cause any
dispositions of Shares (including derivative securities with respect to the
Shares) or acquisition of Parent Shares (including derivative securities with
respect to the Parent Shares) resulting from the transactions contemplated by
this Agreement by each individual who is subject to the reporting requirements
of Section 16(a) of the Exchange Act with respect to the Company to be exempt
under Rule 16b-3 promulgated under the Exchange Act, including by taking steps
in accordance with the No-Action Letter, dated January 12, 1999, issued by the
SEC regarding such matters.

     Section 5.11 Tax Treatment.

     (a) Each of Parent, Acquisition and the Company agrees that it will not
take or permit to be taken any action, or fail to take any action, and will
cause its respective subsidiaries not to take any action or fail to take any
action, which action or failure would be reasonably likely to cause the
Transaction to fail to qualify as a "reorganization" within the meaning of
Section 368(a) of the Code.

     (b) The Company, Parent and Acquisition shall execute and deliver to Dewey
Ballantine LLP, special counsel to the Company and Cooley Godward LLP, special
counsel to Parent, certificates containing representations in form and substance
acceptable to such law firms and at such time or times as requested by such law
firms in connection with the delivery of their respective opinions to the
Company and to Parent with respect to the transactions contemplated hereby. None
of the Company, Parent or Acquisition shall take, cause to be taken or permit to
be taken any action which would cause to be untrue (or fail to take or cause or
permit not to be taken any action which would cause to be untrue) any of the
representations in such certificates.

     (c) Notwithstanding anything in this Agreement to the contrary, without the
prior written consent of the Company, Parent shall not, and shall not permit any
subsidiary or affiliate to, accept Shares for payment in the Offer unless (x)
the Company shall have received opinions of Dewey Ballantine LLP (such opinions
to be substantially identical to the opinions set forth in Section 5.11(c)(y)),
reasonably satisfactory to the Company, dated (A) as of the effective date of
the Form S-4 (based on representations of the Company, Parent and Acquisition in
form and substance acceptable to such law firm), (i) to the effect that,
although not free from doubt, for federal income tax purposes the Transaction
will constitute a reorganization within the meaning of Section 368(a) of the
Code and (ii) including such other matters as may be appropriate for description
in, and inclusion as an Exhibit, to the S-4 Registration Statement and (B) as of
the date of the expiration of the Offer (based on representations of the
Company, Parent and Acquisition in form and substance acceptable to such law
firm) to the effect that, although not free from doubt, for federal income tax
purposes the Transaction will constitute a reorganization within the meaning of
Section 368(a) of the Code and (y) Parent shall have received opinions of Cooley
Godward LLP (such opinions to be substantially identical to the opinions set
forth in Section 5.11(c)(x)), reasonably satisfactory to Parent, dated (A) as of
the effective date of the Form S-4 (based on representations of the Company,
Parent and Acquisition in form and substance acceptable to such law firm), (i)
to the effect that, although not free from doubt, for federal income tax
purposes the Transaction will constitute a reorganization within the meaning of
Section 368(a) of the Code and (ii) including such other matters as may be
appropriate for description in, and inclusion as an Exhibit, to the S-4
Registration Statement and (B) as of the date of the expiration of the Offer
(based on representations of the Company, Parent and Acquisition in form and
substance acceptable to such law firm) to the effect that, although not free
from doubt, for federal income tax purposes the Transaction will constitute a
reorganization within the meaning of Section 368(a) of the Code.

     Section 5.12 Affiliate Letters.  As promptly as practicable, the Company
shall deliver to Parent a letter identifying all Persons who are at the time
this Agreement is submitted for adoption by the stockholders of the Company,
"affiliates" of the Company for purposes of Rule 145 under the Securities Act.
The Company shall use all reasonable efforts to deliver or cause to be delivered
to Parent, prior to

                                      A-31
<PAGE>   134

the expiration of the Offer, an Affiliate Letter in the form attached hereto as
Exhibit A from each such person.

     Section 5.13 Balance Sheet Transactions.  As contemplated in Schedule 3.30,
prior to or simultaneously with the Closing, the Company shall use its
reasonable best efforts to cause the identified lease portfolio assets to not be
characterized as assets on the Company's consolidated balance sheet prepared in
accordance with GAAP following the Closing.

     Section 5.14 Lease Portfolio Liquidation.  As contemplated in Schedule
3.31, the Company shall use its reasonable best efforts to implement in all
material respects the plans set forth in Schedule 3.31 related to the sale,
liquidation or refinancing of the identified lease portfolio assets prior to or
simultaneously with the Closing.

     Section 5.15 FIRPTA Matters.  On the expiration date of the Offer (a) the
Company shall deliver to the Parent a statement (in such form as may reasonably
be requested by counsel to Parent) conforming to the requirements of Sections
1.1445-2(c)(3)(i) and 1.897-2(h)(1)(i) of the United States Income Tax
Regulations and (b) the Company shall deliver to the Internal Revenue Service
the notification required under Section 1.897-2(h)(2) of the United States
Income Tax Regulations.

                                   ARTICLE VI

                            CONDITIONS TO THE MERGER

     Section 6.1 Conditions to the Obligations of the Parties.  The respective
obligations of the parties to consummate the Merger are subject to the
fulfillment at or prior to the Effective Time of the following conditions:

          (a) if required by applicable law, this Agreement shall have been duly
     approved by the holders of two-thirds of the outstanding Shares, in
     accordance with applicable law and the Certificate of Incorporation and
     By-Laws of the Company;

          (b) no statute, rule, regulation, executive order, decree, ruling or
     injunction shall have been enacted, entered, promulgated or enforced by any
     United States court or United States governmental authority which
     prohibits, restrains or enjoins the consummation of the Merger;

          (c) Acquisition shall have accepted for payment and paid for Shares
     pursuant to the Offer, provided that Parent and Acquisition may not assert
     this condition if the failure to accept Shares for payment was in breach of
     this Agreement or resulted from a breach by Parent or Acquisition; and

          (d) In the event that Merger is not accomplished in accordance with
     the short-form merger provisions of the DGCL, the Post-Effective Amendment
     shall have become effective in accordance with the provisions of the
     Securities Act, and no stop order shall have been issued, and no proceeding
     for that purpose shall have been initiated or be threatened, by the SEC
     with respect thereto.

                                  ARTICLE VII

                          TERMINATION AND ABANDONMENT

     Section 7.1 Termination and Abandonment.  This Agreement may be terminated
and the Merger may be abandoned at any time prior to the Effective Time, whether
before or after approval by the stockholders of the Company:

          (a) by mutual action of the Boards of Directors of Parent and the
     Company;

          (b) by either the Company or Parent if (i) any statute, rule,
     regulation, executive order, decree, ruling or injunction of or by any
     Governmental Entity of competent jurisdiction which makes the consummation
     of the Merger illegal shall be in effect and shall have become final and
     nonappealable, (ii) the Offer shall have expired without the acceptance for
     payment of Shares thereunder or (iii) the

                                      A-32
<PAGE>   135

     acceptance for payment of Shares pursuant to the Offer shall not have
     occurred on or prior to the close of business on February 28, 2001, unless,
     in any case, such event has been caused by the breach of this Agreement by
     the party seeking such termination;

          (c) by the Company, prior to acceptance for payment of Shares in the
     Offer, to enter into a definitive written agreement with respect to an
     Alternative Transaction with a Third Party, provided that, prior to
     entering into such definitive agreement, the Company shall have given
     Parent notice of such Alternative Transaction as required by Section 5.6(a)
     and paid the fee payable under Section 8.2(b) hereof;

          (d) by Parent, if, prior to the acceptance for payment of Shares in
     the Offer, the Board of Directors of the Company shall have publicly
     withdrawn, modified or amended in a manner adverse to Acquisition its
     approval or recommendation of the Merger, the Offer or this Agreement (or
     shall have failed to make such favorable recommendation) or publicly
     approved, recommended or endorsed any proposal for, or authorized the
     Company to enter into, an Alternative Transaction;

          (e) by the Company if, prior to the acceptance for payment of Shares
     in the Offer, Parent shall have failed to perform in all material respects
     its covenants and obligations contained in this Agreement, which failure to
     perform has not been cured within ten business days after the giving of
     notice to Parent;

          (f) by the Parent if, prior to the acceptance for payment of Shares in
     the Offer, Company shall have failed to perform in all material respects
     its covenants and obligations contained in this Agreement, which failure to
     perform has not been cured within ten business days after the giving of
     notice to Company;

          (g) by the Company, prior to the acceptance for payment of shares in
     the Offer, if the Average Parent Price is less than $15.00 (computed as of
     the initial expiration date of the Offer or any subsequent date); or

          (h) by Parent, if any Person other than Parent or an affiliate
     acquires more than 20% of the Shares.

Any party desiring to terminate this Agreement pursuant to this Section 7.1
shall give notice to the other party in accordance with Section 8.5.

     Section 7.2 Effect of Termination.  Except as provided in Sections 5.4 and
8.2, in the event of the termination of this Agreement and the abandonment of
the Merger pursuant to Section 7.1, this Agreement shall thereafter become void
and have no effect, and no party hereto shall have any liability to any other
party hereto or its stockholders or directors or officers in respect thereof,
except that nothing herein shall relieve any party from liability for any breach
hereof.

                                  ARTICLE VIII

                                 MISCELLANEOUS

     Section 8.1 Nonsurvival of Representations and Warranties.  None of the
representations and warranties in this Agreement or in any instrument delivered
pursuant hereto shall survive the Effective Time, provided that this Section 8.1
shall not limit any covenant or agreement of the parties, which covenants and
agreements shall survive in accordance with their terms.

     Section 8.2 Expenses, Etc.

     (a) (i) In the event that the transactions contemplated by this Agreement
are not consummated, neither the Company, on the one hand, nor Acquisition, on
the other hand, shall have any obligation to pay any of the fees and expenses of
the other incident to the negotiation, preparation and execution of this
Agreement, including the fees and expenses of counsel, accountants, investment
bankers and other experts, provided, however, that if this Agreement shall have
been terminated as a result of the willful and material

                                      A-33
<PAGE>   136

misrepresentations by a party or the willful and material breach by a party of
any of its covenants and agreements contained herein, such party shall pay the
costs and expenses incurred by the other parties in connection with this
Agreement.

     (i) Parent and the Company shall share equally all fees and expenses, other
than attorneys' fees, incurred in connection with (A) the filing, printing and
mailing of the Form S-4 Registration Statement and the Prospectus/Proxy
Statement and any amendments or supplements thereto and (B) the filing by the
parties hereto of the premerger notification and report forms relating to the
Merger under the HSR Act and the filing of any notice or other document under
any applicable foreign antitrust law or regulation.

     (b) If a Payment Event (as hereinafter defined) occurs, the Company shall
pay to Parent prior to such Payment Event, in the event of a Payment Event
specified in clause (x) of Section 8.2(c), and within two business days
following such Payment Event in the event of a Payment Event specified in
clauses (y) or (z) of Section 8.2(a), a fee of $5.3 million in cash.

     (c) For purposes of this Agreement, the term "Payment Event" shall mean (x)
the termination of this Agreement by the Company pursuant to Section 7.1(c)
[Alternative Transaction], (y) the termination of this Agreement by Parent
pursuant to Section 7.1(d) [change in recommendation] unless the change in
recommendation is due to (1) Parent having failed to comply with or perform, or
having breached, in any material respect any provision of this Agreement or (2)
a Material Adverse Effect with respect to Parent, and (z) (1) after the date
hereof and prior to the termination of this Agreement a third party shall have
made a bona fide proposal for an Alternative Transaction, (2) this Agreement
shall be terminated due to the failure to be satisfied of the Minimum Condition
or due to the Company's willful and material breach of its agreements or
covenants contained herein (and not by reason of Parent's failure to comply with
or perform, or its breach of, in any material respect any provision of this
Agreement) and (3) within 12 months after the termination of this Agreement, the
Company shall have entered into a definitive agreement with respect to, or shall
have consummated, an Alternative Transaction (substituting 50% for 20% in the
definition thereof).

     (d) The Company acknowledges that the agreements contained in this Section
8.2 are an integral part of the transactions contemplated by this Agreement, and
that, without these agreements, Parent would not enter into this Agreement,
accordingly, if the Company fails to promptly pay any amount due pursuant to
this Section 8.2, and, in order to obtain such payment, Parent commences a suit
that results in a judgment against the Company for the fee set forth in this
Section 8.2, the Company shall also pay to Parent its reasonable costs and
expenses incurred in connection with such litigation. If Parent commences such a
suit and it does not result in such a judgment, Parent shall pay to the Company
its reasonable costs and expenses incurred in connection with such litigation.

     Section 8.3 Publicity.  The Company and Parent agree that they will not
issue any press release or make any other public announcement concerning this
Agreement or the transactions contemplated hereby without the prior consent of
the other party, except that the Company may make such public disclosure that it
believes in good faith to be required by law (in which event the Company shall
consult with Parent prior to making such disclosure).

     Section 8.4 Execution in Counterparts.  For the convenience of the parties,
this Agreement may be executed in one or more counterparts, each of which shall
be deemed an original, but all of which together shall constitute one and the
same instrument.

                                      A-34
<PAGE>   137

     Section 8.5 Notices.  All notices that are required or may be given
pursuant to the terms of this Agreement shall be in writing and shall be
sufficient in all respects if given in writing and delivered by hand or national
overnight courier service, transmitted by telecopy or mailed by registered or
certified mail, postage prepaid, as follows (each such notice to be effective
upon receipt):

     If to Parent or Acquisition to:
        VerticalNet, Inc.
        700 Dresher Road
        Horsham, Pennsylvania 19044
        Telecopy: 215-784-1960
        Attention: James W. McKenzie, Jr.

     with a copy to:
        Cooley Godward LLP
        2595 Canyon Boulevard, Suite 250
        Boulder, Colorado 80302
        Telecopy: 303-546-4099
        Attention: James H. Carroll
     If to the Company, to:

        SierraCities.com Inc.
        600 Travis Street, 70th Floor
        Houston, Texas 77002
        Telecopy: 713-221-1818
        Attention: Thomas J. Depping

     with a copy to:

        SierraCities.com Inc.
        399 Knollwood Road, Suite G-10
        White Plains, New York 10603
        Telecopy: 914-286-6370
        Attention: Alan L. Langus

        and

        Dewey Ballantine LLP
        1301 Avenue of the Americas
        New York, New York 10019
        Telecopy: 212-259-6333
        Attention: Richard D. Pritz

or such other address or addresses as any party hereto shall have designated by
notice in writing to the other parties hereto.

     Section 8.6 Waivers.  The Company, on the one hand, and Parent, on the
other hand, may, by written notice to the other, (i) extend the time for the
performance of any of the obligations or other actions of the other under this
Agreement, (ii) waive any inaccuracies in the representations or warranties of
the other contained in this Agreement or in any document delivered pursuant to
this Agreement, (iii) waive compliance with any of the conditions of the other
contained in this Agreement or (iv) waive performance of any of the obligations
of the other under this Agreement. Except as provided in the preceding sentence,
no action taken pursuant to this Agreement, including, without limitation, any
investigation by or on behalf of any party, shall be deemed to constitute a
waiver by the party taking such action of compliance with any representations,
warranties, covenants or agreements contained in this Agreement. The waiver by
any party hereto of a breach of any provision of this Agreement shall not
operate or be construed as a waiver of any subsequent breach.

                                      A-35
<PAGE>   138

     Section 8.7 Entire Agreement.  This Agreement, its Exhibits and Schedules
and the Confidentiality Agreement constitute the entire agreement among the
parties hereto with respect to the subject matter hereof and supersede all prior
agreements and understandings, oral and written, between the parties hereto with
respect to the subject matter hereof. No representation, warranty, promise,
inducement or statement of intention has been made by any party that is not
embodied in this Agreement or such other documents, and none of the parties
shall be bound by, or be liable for, any alleged representation, warranty,
promise, inducement or statement of intention not embodied herein or therein.

     Section 8.8 Applicable Law.  This Agreement shall be governed by and
construed in accordance with the laws of the State of Delaware, without regard
to principles of conflict of laws, except to the extent the corporate law of the
State of Delaware is applicable hereto.

     The parties hereto agree that any suit, action or proceeding seeking to
enforce any provision of, or based on any matter arising out of, this Agreement
may be brought in the United States District Court for the District of Delaware
or any other Delaware State court (and in the appropriate appellate courts), and
each of the parties hereby (i) consents to the jurisdiction of such courts in
any such suit, action or proceeding, (ii) irrevocably waives any objection which
it may now or hereafter have to the laying of the venue of any such suit, action
or proceeding in any such court or that any such suit, action or proceeding
which is brought in any such court has been brought in an inconvenient forum and
(iii) agrees not to bring any action related to this agreement or the
transactions contemplated hereby in any other court (except to enforce the
judgment of such courts). Process in any such suit, action or proceeding may be
served on any party anywhere in the world, whether within or without the
jurisdiction of any such court. Without limiting the foregoing, each party
agrees that service of process on such party in the manner provided for notices
in Section 8.5 shall be deemed effective service of process on such party. Each
of Parent, Acquisition and the Company hereby irrevocably waives all right to
trial by jury in any action, proceeding or counterclaim (whether based on
contract, tort or otherwise) arising out of or relating to this Agreement or the
actions of Parent, Acquisition or the Company in the negotiation,
administration, performance and enforcement hereof.

     Section 8.9 Binding Effect, Benefits.  Except as otherwise stated herein,
this Agreement shall inure to the benefit of and be binding upon the parties
hereto and their respective permitted successors and assigns. Except as
otherwise stated herein, nothing in this Agreement, expressed or implied, is
intended to confer on any person other than the parties hereto or their
respective permitted successors and assigns, any rights, remedies, obligations
or liabilities under or by reason of this Agreement, provided, however, that the
provisions of Section 5.8 hereof shall accrue to the benefit of, and shall be
enforceable by, each of the current and former directors and officers of the
Company.

     Section 8.10 Assignability.  Neither this Agreement nor any of the parties'
rights hereunder shall be assignable by any party hereto without the prior
written consent of the other party hereto.

     Section 8.11 Amendments.  This Agreement may be amended or supplemented at
any time before or after the approval and adoption of this Agreement by the
stockholders of the Company by action of Parent, Acquisition and the Company,
without action by the stockholders thereof, provided that, after approval and
adoption of this Agreement by the Company's stockholders, no such amendment or
supplement shall, without consent of such stockholders, reduce the amount or
alter the form of the consideration that the holders of the capital stock of the
Company shall be entitled to receive upon the Effective Time pursuant to Article
II hereof. Without limiting the generality of the foregoing, this Agreement may
only be amended or supplemented by an instrument in writing signed by the
parties hereto.

     Section 8.12 Interpretation.  As used herein, "best efforts" or similar
formulations shall mean "all commercially reasonable best efforts." References
to the "knowledge" of the Company, or similar formulations, shall mean to the
actual knowledge of the executive officers and directors of the Company after
reasonable inquiry in the exercise of due care. As used herein, "including" or
similar formulations shall mean "including without limitation." As used herein,
a "subsidiary" of any person means any corporation or other legal entity of
which such person (either alone or through or together with any other

                                      A-36
<PAGE>   139

subsidiary) owns, directly or indirectly, more than 50% of the stock or other
equity interests, the holders of which are generally entitled to vote for the
election of the board of directors or other governing body of such corporation
or other legal entity. "Company Subsidiary" means a direct or indirect
subsidiary of the Company. Unless the context shall indicate otherwise, "or"
shall be non-exclusive. This Agreement shall be deemed drafted jointly by all
the parties hereto and shall not be construed against any party based on a claim
that such party or its counsel drafted this Agreement.

     IN WITNESS WHEREOF, the parties have executed and delivered this Agreement
and Plan of Merger as of the day and year first above written.

                                          VERTICALNET, INC.

                                          By: /s/    GENE S. GODICK
                                            ------------------------------------
                                              Name:  Gene S. Godick
                                              Title:   Executive Vice President
                                                       and Chief Financial
                                                       Officer

                                          TRUCKEE ACQUISITION CORPORATION

                                          By: /s/JAMES W. MCKENZIE, JR.
                                            ------------------------------------
                                              Name:  James W. McKenzie, Jr.
                                              Title:   Vice President

                                          SIERRACITIES.COM INC.

                                          By: /s/   THOMAS S. DEPPING
                                            ------------------------------------
                                              Name:  Thomas S. Depping
                                              Title:   Chief Executive Officer

                                      A-37
<PAGE>   140

                                    ANNEX I

                            CONDITIONS OF THE OFFER

     Notwithstanding any other provision of the Offer or this Agreement, and in
addition to (and not in limitation of) Acquisition's rights to extend and amend
the Offer (subject to the provisions of this Agreement), and subject to any
applicable rules and regulations of the SEC, including Rule 14e-1(c) relating to
Acquisition's obligation to pay for or return tendered shares after termination
of the Offer, Acquisition shall not be required to accept for payment or pay for
any Shares tendered pursuant to the Offer, if (i) the Minimum Condition has not
been satisfied, (ii) any applicable waiting period under the HSR Act has not
expired or terminated, (iii) the Form S-4 shall not have become effective under
the Securities Act or shall be the subject of any stop order or proceedings
seeking a stop order, (iv) the Parent Shares to be issued in the Offer and the
Merger shall not have been approved for listing on the Nasdaq, subject to
official notice of issuance or (v) at any time after the date of this Agreement,
and before acceptance for payment of any Shares, any of the following events
shall occur and be continuing:

          (a) there shall have been any action taken, or any statute, rule,
     regulation, judgment, order or injunction promulgated, entered, enforced,
     enacted, issued or deemed applicable to the Offer or the Merger by any
     domestic or foreign court or other Governmental Entity which directly or
     indirectly (i) prohibits, or makes illegal, the acceptance for payment of
     or payment for Shares or the consummation of the Offer or the Merger, (ii)
     renders Acquisition unable to accept for payment or pay for some or all of
     the Shares, (iii) imposes material limitations on the ability of Parent
     effectively to exercise full rights of ownership of the Shares, including
     the right to vote the Shares purchased by it on all matters properly
     presented to the Company's stockholders, (iv) prohibits or imposes any
     material limitations on Parent's direct or indirect ownership or operation
     (or that of any of its affiliates) of all or a material portion of their or
     the Company's businesses or assets, (v) compels Parent or its affiliates to
     dispose of or hold separate any portion of the business or assets of the
     Company or Parent and their respective subsidiaries which would be material
     in the context of the Company and its subsidiaries taken as a whole, (vi)
     obliges the Company, Parent or any of their respective subsidiaries to pay
     material damages in connection with the transactions contemplated by the
     Agreement or (vii) which otherwise constitutes a Material Adverse Effect on
     the Company or, as a result of the transactions contemplated by the
     Agreement, Parent.

          (b) (i) the representations and warranties of the Company contained in
     this Agreement shall not be true and correct both when made and on and as
     of the expiration date with the same effect as though such representations
     and warranties had been made on and as of such date (except for
     representations and warranties expressly made as of an earlier date, in
     which case as of such date), except for such failures to be true and
     correct (without giving effect to any materiality qualifiers) which,
     individually or in the aggregate, would not constitute a Material Adverse
     Effect on the Company or (ii) the Company shall have failed to perform in
     all material respects its covenants and obligations contained in this
     Agreement, which failure to perform has not been cured within ten business
     days after the giving of written notice to the Company.

          (c) Except as disclosed in the Company SEC Filings or Schedule 3.8
     supplied on the date hereof, there shall have occurred since September 30,
     2000 one or more events, occurrences, states, or actions that, individually
     or in the aggregate, have had or are reasonably likely to have a material
     adverse effect on (x) the business, financial condition, assets,
     liabilities or results of operations of the Company and its subsidiaries,
     taken as a whole, other than effects due to (i) general economic, market or
     political conditions, (ii) matters generally affecting the industries in
     which such person operates or (iii) the announcement or expectation of this
     Agreement.

          (d) the Company Board shall have publicly withdrawn, or modified or
     changed in a manner adverse to Parent and Acquisition (including by
     amendment of the Schedule 14D-9), its recommendation of the Offer, this
     Agreement or the Merger, or shall have failed to make such favorable
     recommendation, or publicly recommended an Alternative Transaction, or the
     Company Board shall have resolved to do, or publicly announced an intention
     to do, any of the foregoing;
                                      A-I-1
<PAGE>   141

          (e) any person or "group" (as defined in Section 13(d)(3) of the
     Exchange Act), other than Parent or its affiliates or any group of which
     any of them is a member, shall have acquired or announced its intention to
     acquire beneficial ownership (as determined pursuant to Rule 13d-3
     promulgated under the Exchange Act) of 20% or more of the Shares;

          (f) this Agreement shall have terminated in accordance with its terms;
     or

          (g) the Company shall have failed to execute a Waiver Agreement
     substantially in the form of Exhibit B hereto;

which in the reasonable judgment of Parent, in any such case, and regardless of
the circumstances (including any action or inaction by Parent) giving rise to
such condition makes it inadvisable to proceed with the Offer or the acceptance
for payment of or payment for the Shares.

     The foregoing conditions are for the sole benefit of Parent and Acquisition
and may be waived by Parent and Acquisition, in whole or in part at any time and
from time to time, in the sole discretion of Parent and Acquisition. The failure
by Parent and Acquisition at any time to exercise any of the foregoing rights
shall not be deemed a waiver of any such right and each such right shall be
deemed an ongoing right which may be asserted at any time and from time to time.

                                      A-I-2
<PAGE>   142

                                                                         ANNEX B

                                TENDER AGREEMENT

     This Tender Agreement ("Agreement") is entered into as of November 6, 2000,
by and between VerticalNet, Inc., a Pennsylvania corporation ("Parent"), and
               ("Stockholder").

                                    RECITALS

     A. Parent, Truckee Acquisition Co., a Delaware corporation and a wholly
owned subsidiary of Parent ("Merger Sub"), and SierraCities.com, Inc., a
Delaware corporation (the "Company"), are entering into an Agreement and Plan of
Merger of even date herewith (the "Merger Agreement") which provides (subject to
the conditions set forth therein) for the acquisition of shares of Common Stock
of the Company by Parent pursuant to a tender offer followed by the merger of
Merger Sub into the Company (the "Merger").

     B. In order to induce Parent and Merger Sub to enter into the Merger
Agreement, Stockholder is entering into this Agreement.

                                   AGREEMENT

     The parties to this Agreement, intending to be legally bound, agree as
follows:

                                   SECTION 1.

                              CERTAIN DEFINITIONS

     For purposes of this Agreement:

          (a) "Company Common Stock" shall mean the common stock, par value $.01
     per share, of the Company.

          (b) "Expiration Date" shall mean the earliest of (i) the date upon
     which the Merger Agreement is terminated; (ii) the date upon which the
     Merger is effected; (iii) the date upon which all of the Stockholder's now
     owned or hereafter acquired shares of Company Common Stock are purchased by
     Parent or Merger Sub pursuant to the Offer (as defined in the Merger
     Agreement) and (iv) the date on which the Offer terminates without the
     purchase of Company Common Stock thereunder.

          (c) Stockholder shall be deemed to "Own" or to have acquired
     "Ownership" of a security if Stockholder: (i) is the record owner of such
     security; or (ii) is the "beneficial owner" (within the meaning of Rule
     13d-3 under the Securities Exchange Act of 1934) of such security.

          (d) "Person" shall mean any (i) individual, (ii) corporation, limited
     liability company, partnership or other entity, or (iii) governmental
     authority.

          (e) "Subject Securities" shall mean: (i) all securities of the Company
     (including all shares of Company Common Stock and all options, warrants and
     other rights to acquire shares of Company Common Stock) Owned by
     Stockholder as of the date of this Agreement; and (ii) all additional
     securities of the Company (including all additional shares of Company
     Common Stock and all additional options, warrants and other rights to
     acquire shares of Company Common Stock) of which Stockholder acquires
     Ownership during the period from the date of this Agreement through the
     Expiration Date.

          (f) A Person shall be deemed to have a effected a "Transfer" of a
     security if such Person directly or indirectly: (i) sells, pledges,
     encumbers, grants an option with respect to, transfers or disposes of such
     security or any interest in such security; or (ii) enters into an agreement
     or commitment contemplating the possible sale of, pledge of, encumbrance
     of, grant of an option with respect to, transfer of or disposition of such
     security or any interest therein.

                                       B-1
<PAGE>   143

                                   SECTION 2.

                                TENDER OF SHARES

     2.1 Tender Agreement.  Stockholder agrees, pursuant to the terms and
subject to the conditions set forth herein:

          (a) to tender for exchange in the Offer all shares of Company Common
     Stock currently held by Stockholder as set forth on the signature page
     hereto and any additional shares of Company Common Stock acquired by
     Stockholder (whether by purchase, upon conversion of options or convertible
     securities, or otherwise) after the date of this Agreement (collectively,
     the "Stockholder's Shares"); and

          (b) as promptly as practicable (but no later than five business days)
     after commencement of the Offer (or, in the case of shares of Company
     Common Stock acquired by Stockholder after commencement of the Offer, as
     promptly as practicable after such acquisition), Stockholder shall, as
     appropriate, (x) deliver to the Exchange Agent (the "Exchange Agent")
     designated in the Offer (i) a letter of transmittal with respect to the
     Stockholder's Shares complying with the terms of the Offer together with
     instructions directing the Exchange Agent to make payment for the
     Stockholder's Shares directly to Stockholder, (ii) a certificate or
     certificates representing the Stockholder's Shares and (iii) all other
     documents or instruments required to be delivered pursuant to the terms of
     the Offer (collectively, the "Tender Documents"), and/or (y) instruct its
     broker or such other Person who is the holder of record of any shares of
     Common Stock Owned by Stockholder to tender such shares for exchange in the
     Offer pursuant to the terms and conditions of the Offer.

          (c) Stockholder shall not withdraw any tender effected in accordance
     with this Section 2.1; provided, however, that Stockholder shall have the
     right to withdraw any tender effected in accordance with this Section 2.1
     if the Merger Agreement is terminated.

     2.2 Proxy. Stockholder hereby irrevocably (to the fullest extent permitted
by law) appoints and constitutes each of                and Parent the attorneys
and proxies of the undersigned with full power of substitution and
resubstitution, to the full extent of the undersigned's rights with respect to
(i) the outstanding shares of capital stock of the Company Owned by the
undersigned as of the date of this Agreement, which shares are specified on the
final page of this Agreement and (ii) any and all other shares of capital stock
of the Company which the undersigned may acquire on or after the date hereof or
otherwise obtain the right to vote. (The shares of the capital stock of the
Company referred to in clauses "(i)" and "(ii)" of the immediately preceding
sentence are collectively referred to as the "Shares.") Upon the execution
hereof, all prior proxies given by the undersigned with respect to any of the
Shares are hereby revoked, and the undersigned agrees that no subsequent proxies
will be given with respect to any of the Shares.

     This proxy is irrevocable, is coupled with an interest between Parent and
the undersigned and is granted in consideration of Parent entering into the
Merger Agreement.

     The attorneys and proxies named above will be empowered, and may exercise
this proxy, to vote the Shares at any time until the Expiration Date at any
meeting of the stockholders of the Company, however called, or in connection
with any solicitation of written consents from stockholders of the Company, (i)
in favor of the approval and adoption of the Merger Agreement and the approval
of the Merger, and in favor of each of the other actions contemplated by the
Merger Agreement, (ii) against any proposal for any recapitalization, merger,
sale of assets or other business combination between the Company and any person
or entity (other than the Merger) and (iii) against any action or agreement that
would result in a breach of any covenant, representation or warranty or would
result in any obligation or agreement of the Company under the Merger Agreement
not being fulfilled or would result in the Company being required to pay to
Parent or Merger Sub the fee contemplated in [Section 8.2] of the Merger
Agreement.

     The undersigned may vote the Shares on all other matters.

                                       B-2
<PAGE>   144

     This proxy shall be binding upon the heirs, estate, executors, personal
representatives, successors and assigns of the undersigned (including any
transferee of any of the Shares).

     This proxy shall terminate upon the Expiration Date.

                                   SECTION 3.

                 REPRESENTATIONS AND WARRANTIES OF STOCKHOLDER

     Stockholder hereby represents and warrants to Parent as follows:

     3.1 Authorization, etc.  Stockholder has the absolute and unrestricted
right, power, authority and capacity to execute and deliver this Agreement and
to perform his obligations hereunder and thereunder. This Agreement has been
duly executed and delivered by Stockholder and constitute legal, valid and
binding obligations of Stockholder, enforceable against Stockholder in
accordance with their terms, subject to (i) laws of general application relating
to bankruptcy, insolvency and the relief of debtors, and (ii) rules of law
governing specific performance, injunctive relief and other equitable remedies.

     3.2 No Conflicts or Consents.

     (a) The execution and delivery of this Agreement by Stockholder do not,
and, to the Stockholder's knowledge as of the date of this Agreement, the
performance of this Agreement by Stockholder in accordance with its terms will
not: (i) conflict with or violate any law, rule, regulation, order, decree or
judgment applicable to Stockholder or by which he or any of his properties is or
may be bound or affected; or (ii) result in or constitute (with or without
notice or lapse of time) any breach of or default under, or give to any other
Person (with or without notice or lapse of time) any right of termination,
amendment, acceleration or cancellation of, or result (with or without notice or
lapse of time) in the creation of any encumbrance or restriction on any of the
Subject Securities pursuant to, any contract to which Stockholder is a party or
by which Stockholder or any of his affiliates or properties is or may be bound
or affected.

     (b) The execution and delivery of this Agreement by Stockholder do not, and
the performance of this Agreement by Stockholder will not, require any consent
or approval of any Person.

     3.3 Title to Securities.  As of the date of this Agreement: (a) Stockholder
holds of record (free and clear of any encumbrances or restrictions) the number
of outstanding shares of Company Common Stock set forth under the heading
"Shares Held of Record" on the signature page hereof; (b) Stockholder holds
(free and clear of any encumbrances or restrictions) the options, warrants and
other rights to acquire shares of Company Common Stock set forth under the
heading "Options and Other Rights" on the signature page hereof; (c) Stockholder
Owns the additional securities of the Company set forth under the heading
"Additional Securities Beneficially Owned" on the signature page hereof; and (d)
Stockholder does not directly or indirectly Own any shares of capital stock or
other securities of the Company, or any option, warrant or other right to
acquire (by purchase, conversion or otherwise) any shares of capital stock or
other securities of the Company, other than the shares and options, warrants and
other rights set forth on the signature page hereof.

     3.4 Accuracy of Representations.  The representations and warranties
contained in this Agreement are accurate in all respects as of the date of this
Agreement, will be accurate in all respects at all times through the Expiration
Date and will be accurate in all respects as of the date of the consummation of
the Merger as if made on that date.

     3.5 Finder's Fees.  No investment banker, broker, finder or other Person is
entitled to a commission or fee from Parent or Merger Sub in respect of this
Agreement based upon any arrangement or agreement made by or on behalf of
Stockholder other than any arrangement or agreement made by or on behalf of the
Company.

                                       B-3
<PAGE>   145

                                   SECTION 4.

                      ADDITIONAL COVENANTS OF STOCKHOLDER

     4.1 Further Assurances.  Stockholder agrees that, subject to the fiduciary
duty under applicable law of Stockholder as a director of the Company (if
Stockholder is such a director) as further provided in the Merger Agreement, it
shall not take any action which in any manner delays, deters or impedes the
successful completion of the Offer and the Merger in an expeditious manner. In
addition, from time to time and without additional consideration, Stockholder
shall execute and deliver, or cause to be executed and delivered, such
additional transfers, assignments, endorsements, proxies, consents and other
instruments, and shall take such further actions, as Parent may reasonably
request for the purpose of carrying out and furthering the intent of this
Agreement.

     4.2 No Proxies for or Encumbrances on Stockholder Shares.  Except pursuant
to the terms of this Agreement or the Tender Documents, Stockholder shall not,
without the prior written consent of Parent, directly or indirectly, (i) grant
any proxies or enter into any voting trust or other agreement or arrangement
with respect to the voting of any Stockholder's Shares or (ii) sell, assign,
transfer, encumber or otherwise dispose of, or enter into any contract, option
or other arrangement or understanding with respect to the direct or indirect
sale, assignment, transfer, encumbrance or other disposition of, any Subject
Securities during the term of this Agreement.

     4.3 No Shopping.  Stockholder, in the capacity as a stockholder, shall not
directly or indirectly (i) subject to the fiduciary duty under applicable law of
Stockholder as a director of the Company (if Stockholder is such a director) as
further provided in the Merger Agreement, solicit, initiate or encourage (or
authorize any person to solicit, initiate or encourage) any inquiry, proposal or
offer from any person to acquire the business, property or capital stock of the
Company or any direct or indirect subsidiary thereof, or any acquisition of a
substantial equity interest in, or a substantial amount of the assets of, the
Company or any direct or indirect subsidiary thereof, whether by merger,
purchase of assets, tender offer or other transaction or (ii) subject to the
fiduciary duty under applicable law of Stockholder as a director of the Company
(if Stockholder is such a director) as further provided in the Merger Agreement,
participate in any discussion or negotiations regarding, or furnish to any other
person any information with respect to, or otherwise cooperate in any way with,
or participate in, facilitate or encourage any effort or attempt by any other
person to do or seek any of the foregoing. Stockholder shall promptly advise
Parent of the terms of any communications it may receive in the capacity as a
stockholder relating to any of the foregoing. The Stockholder is signing this
Agreement in its capacity as a stockholder of the Company. Nothing herein shall
restrict the Stockholder (or, in the case that the Stockholder is not an
individual, a representative of the Stockholder) from discharging its fiduciary
duties under applicable law as an officer or director of the Company as further
provided in the Merger Agreement.

     4.4 Conduct of Stockholder.  Stockholder will not (i) take, agree or commit
to take any action that would make any representation and warranty of
Stockholder hereunder inaccurate in any respect as of any time prior to the
termination of this Agreement or (ii) omit, or agree or commit to omit, to take
any reasonable action necessary to prevent any such representation or warranty
from being inaccurate in any respect at any such time.

     4.5 Disclosure.  Stockholder hereby permits Parent to publish and disclose
in the offer documents and, if approval of the Company's stockholders is
required under applicable law, a proxy statement (including all documents and
schedules to be filed in connection therewith with the SEC) such Stockholder's
identity and details regarding his ownership of shares of Company Common Stock
and the nature of his commitments, arrangements and understandings under this
Agreement.

                                       B-4
<PAGE>   146

                                   SECTION 5.

                                 MISCELLANEOUS

     5.1 Survival of Representations, Warranties and Agreements.  All
representations, warranties, covenants and agreements made by Stockholder in
this Agreement shall survive (i) the consummation of the Merger, (ii) any
termination of the Merger Agreement, and (iii) the Expiration Date.

     5.2 Indemnification.  Stockholder shall hold harmless and indemnify Parent
and Parent's affiliates from and against, and shall compensate and reimburse
Parent and Parent's affiliates for, any loss, damage, claim, liability, fee
(including attorneys' fees), demand, cost or expense (regardless of whether or
not such loss, damage, claim, liability, fee, demand, cost or expense relates to
a third-party claim) that is directly or indirectly suffered or incurred by
Parent or any of Parent's affiliates, or to which Parent or any of Parent's
affiliates otherwise becomes subject, and that arises directly or indirectly
from, or relates directly or indirectly to, (a) any inaccuracy in or breach of
any representation or warranty contained in this Agreement, or (b) any failure
on the part of Stockholder to observe, perform or abide by, or any other breach
of, any restriction, covenant, obligation or other provision contained in this
Agreement or in the Proxy.

     5.3 Expenses.  All costs and expenses incurred in connection with the
transactions contemplated by this Agreement shall be paid by the party incurring
such costs and expenses.

     5.4 Notices.  Any notice or other communication required or permitted to be
delivered to either party under this Agreement shall be in writing and shall be
deemed properly delivered, given and received when delivered (by hand, by
registered mail, by courier or express delivery service or by facsimile) to the
address or facsimile telephone number set forth beneath the name of such party
below (or to such other address or facsimile telephone number as such party
shall have specified in a written notice given to the other party):

     if to Stockholder:

        at the address set forth below Stockholder's signature on the signature
        page hereof

     if to Parent:

        VerticalNet, Inc.
          700 Dresher Road, Suite 100
          Horsham, PA 19044

     5.5 Severability.  If any provision of this Agreement or any part of any
such provision is held under any circumstances to be invalid or unenforceable in
any jurisdiction, then (a) such provision or part thereof shall, with respect to
such circumstances and in such jurisdiction, be deemed amended to conform to
applicable laws so as to be valid and enforceable to the fullest possible
extent, (b) the invalidity or unenforceability of such provision or part thereof
under such circumstances and in such jurisdiction shall not affect the validity
or enforceability of such provision or part thereof under any other
circumstances or in any other jurisdiction, and (c) the invalidity or
unenforceability of such provision or part thereof shall not affect the validity
or enforceability of the remainder of such provision or the validity or
enforceability of any other provision of this Agreement. Each provision of this
Agreement is separable from every other provision of this Agreement, and each
part of each provision of this Agreement is separable from every other part of
such provision.

     5.6 Entire Agreement.  This Agreement, the Proxy and any other documents
delivered by the parties in connection herewith constitute the entire agreement
between the parties with respect to the subject matter hereof and thereof and
supersede all prior agreements and understandings between the parties with
respect thereto. No addition to or modification of any provision of this
Agreement shall be binding upon either party unless made in writing and signed
by both parties.

     5.7 Assignment; Binding Effect.  Except as provided herein, neither this
Agreement nor any of the interests or obligations hereunder may be assigned or
delegated by Stockholder, and any attempted or
                                       B-5
<PAGE>   147

purported assignment or delegation of any of such interests or obligations shall
be void. Subject to the preceding sentence, this Agreement shall be binding upon
Stockholder and his heirs, estate, executors, personal representatives,
successors and assigns, and shall inure to the benefit of Parent and its
successors and assigns. Without limiting any of the restrictions set forth in
this Agreement, this Agreement shall be binding upon any Person to whom any
Subject Securities are transferred. Nothing in this Agreement is intended to
confer on any Person (other than Parent and its successors and assigns) any
rights or remedies of any nature.

     5.8 Specific Performance.  The parties agree that irreparable damage would
occur in the event that any of the provisions of this Agreement or the Proxy was
not performed in accordance with its specific terms or was otherwise breached.
Stockholder agrees that, in the event of any breach or threatened breach by
Stockholder of any covenant or obligation contained in this Agreement or in the
Proxy, Parent shall be entitled (in addition to any other remedy that may be
available to it, including monetary damages) to seek and obtain (a) a decree or
order of specific performance to enforce the observance and performance of such
covenant or obligation, and (b) an injunction restraining such breach or
threatened breach. Stockholder further agrees that neither Parent nor any other
Person shall be required to obtain, furnish or post any bond or similar
instrument in connection with or as a condition to obtaining any remedy referred
to in this Section 5.8, and Stockholder irrevocably waives any right he may have
to require the obtaining, furnishing or posting of any such bond or similar
instrument.

     5.9 Non-Exclusivity.  The rights and remedies of Parent under this
Agreement are not exclusive of or limited by any other rights or remedies which
it may have, whether at law, in equity, by contract or otherwise, all of which
shall be cumulative (and not alternative). Without limiting the generality of
the foregoing, the rights and remedies of Parent under this Agreement, and the
obligations and liabilities of Stockholder under this Agreement, are in addition
to their respective rights, remedies, obligations and liabilities under common
law requirements and under all applicable statutes, rules and regulations.
Nothing in this Agreement shall limit any of Stockholder's obligations, or the
rights or remedies of Parent, under any Affiliate Agreement between Parent and
Stockholder; and nothing in any such Affiliate Agreement shall limit any of
Stockholder's obligations, or any of the rights or remedies of Parent, under
this Agreement.

     5.10 Governing Law; Venue.

     (a) This Agreement shall be construed in accordance with, and governed in
all respects by, the laws of the State of Delaware (without giving effect to
principles of conflicts of laws).

     (b) Any legal action or other legal proceeding relating to this Agreement
or the Proxy or the enforcement of any provision of this Agreement or the Proxy
shall be brought or otherwise commenced in any state or federal court located in
the State of Delaware. Each of Stockholder and Parent:

          (i) expressly and irrevocably consents and submits to the jurisdiction
     of each state and federal court located in the State of Delaware in
     connection with any such legal proceeding;

          (ii) agrees that service of any process, summons, notice or document
     by U.S. mail addressed to him at the address set forth below shall
     constitute effective service of such process, summons, notice or document
     for purposes of any such legal proceeding;

          (iii) agrees that each state and federal court located in the State of
     Delaware shall be deemed to be a convenient forum; and

          (iv) agrees not to assert (by way of motion, as a defense or
     otherwise), in any such legal proceeding commenced in any state or federal
     court located in the State of Delaware, any claim that Stockholder is not
     subject personally to the jurisdiction of such court, that such legal
     proceeding has been brought in an inconvenient forum, that the venue of
     such proceeding is improper or that this Agreement or the subject matter of
     this Agreement may not be enforced in or by such court.

     (c) EACH OF STOCKHOLDER AND PARENT IRREVOCABLY WAIVES THE RIGHT TO A JURY
TRIAL IN CONNECTION WITH ANY LEGAL PROCEEDING RELATING TO THIS
                                       B-6
<PAGE>   148

AGREEMENT OR THE PROXY OR THE ENFORCEMENT OF ANY PROVISION OF THIS AGREEMENT OR
THE PROXY.

     5.11 Counterparts.  This Agreement may be executed by the parties in
separate counterparts, each of which when so executed and delivered shall be an
original, but all such counterparts shall together constitute one and the same
instrument.

     5.12 Captions.  The captions contained in this Agreement are for
convenience of reference only, shall not be deemed to be a part of this
Agreement and shall not be referred to in connection with the construction or
interpretation of this Agreement.

     5.13 Attorneys' Fees.  If any legal action or other legal proceeding
relating to this Agreement or the enforcement of any provision of this Agreement
is brought against Stockholder, the prevailing party shall be entitled to
recover reasonable attorneys' fees, costs and disbursements (in addition to any
other relief to which the prevailing party may be entitled).

     5.14 Waiver.  No failure on the part of Parent to exercise any power,
right, privilege or remedy under this Agreement, and no delay on the part of
Parent in exercising any power, right, privilege or remedy under this Agreement,
shall operate as a waiver of such power, right, privilege or remedy; and no
single or partial exercise of any such power, right, privilege or remedy shall
preclude any other or further exercise thereof or of any other power, right,
privilege or remedy. Parent shall not be deemed to have waived any claim
available to Parent arising out of this Agreement, or any power, right,
privilege or remedy of Parent under this Agreement, unless the waiver of such
claim, power, right, privilege or remedy is expressly set forth in a written
instrument duly executed and delivered on behalf of Parent; and any such waiver
shall not be applicable or have any effect except in the specific instance in
which it is given.

     5.15 Termination.  This Agreement will terminate immediately upon the
Expiration Date.

     5.16 Construction.

     (a) For purposes of this Agreement, whenever the context requires: the
singular number shall include the plural, and vice versa; the masculine gender
shall include the feminine and neuter genders; the feminine gender shall include
the masculine and neuter genders; and the neuter gender shall include masculine
and feminine genders.

     (b) The parties agree that any rule of construction to the effect that
ambiguities are to be resolved against the drafting party shall not be applied
in the construction or interpretation of this Agreement.

     (c) As used in this Agreement, the words "include" and "including," and
variations thereof, shall not be deemed to be terms of limitation, but rather
shall be deemed to be followed by the words "without limitation."

     (d) Except as otherwise indicated, all references in this Agreement to
"Sections" and "Exhibits" are intended to refer to Sections of this Agreement
and Exhibits to this Agreement.

                  [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]

                                       B-7
<PAGE>   149

     In Witness Whereof, Parent and Stockholder have caused this Tender
Agreement to be executed as of the date first written above.

                                          VERTICALNET, INC.

                                          By:
                                          --------------------------------------

                                          Stockholder

                                          By:
                                          --------------------------------------

                                          Address:

                                       B-8
<PAGE>   150

                              SCHEDULE TO ANNEX B

             SIERRACITIES STOCKHOLDERS SUBJECT TO TENDER AGREEMENTS

<TABLE>
<CAPTION>
                                                                                  PERCENTAGE OF
                                               NUMBER OF SHARES OF            OUTSTANDING SHARES OF
                                            SIERRACITIES COMMON STOCK    SIERRACITIES COMMON STOCK AS OF
       TENDER AGREEMENT STOCKHOLDER            BENEFICIALLY OWNED               NOVEMBER 6, 2000
       ----------------------------         -------------------------    -------------------------------
<S>                                         <C>                          <C>
Depping 1999 Investment Limited                     1,595,800                         8.38%
  Partnership.............................
Thomas J. Depping.........................             77,400                        0.406%
Sandy B. Ho...............................            245,990                         1.29%
Redstone Group, Ltd.......................          1,183,151                         6.21%
David C. Shindeldecker....................             84,867                        0.445%
David L. Solomon..........................            629,849                         3.31%
                                                   ----------                        ------
Total.....................................          3,817,057                        20.04%
</TABLE>

                                       B-9
<PAGE>   151

     The letter of transmittal, certificates for SierraCities shares and any
other required documents should be sent or delivered by each SierraCities
stockholder or his or her broker, dealer, commercial bank, trust company or
other nominee to the exchange agent at its address set forth below.

                      THE EXCHANGE AGENT FOR THE OFFER IS:

                    AMERICAN STOCK TRANSFER & TRUST COMPANY
                                 59 Maiden Lane
                               New York, NY 10038
                                 (800) 937-5449
                                       or
                                 (718) 921-8200

     Any questions or requests for assistance or additional copies of the
prospectus, the letter of transmittal and the notice of guaranteed delivery and
related exchange offer materials may be directed to the information agent at its
telephone number and location listed below. You may also contact your local
broker, commercial bank, trust company or nominee for assistance concerning the
offer.

             THE INFORMATION AGENT FOR THE OFFER AND THE MERGER IS:

                             D.F. KING & CO., INC.
                                77 Water Street
                               New York, NY 10005
                                 (212) 425-1685
                               or call toll free
                                 (800) 628-8510
<PAGE>   152

                                    PART II.

                     INFORMATION NOT REQUIRED IN PROSPECTUS

ITEM 20.  INDEMNIFICATION OF DIRECTORS AND OFFICERS.

     Our articles of incorporation provide that pursuant to and to the extent
permitted by Pennsylvania law, our directors shall not be personally liable for
monetary damages for breach of any duty owed to us and our shareholders. This
provision does not eliminate the duty of care, and, in appropriate
circumstances, equitable remedies such as an injunction or other forms of
non-monetary relief would remain available under Pennsylvania law. In addition,
each director will continue to be subject to liability for breach of the
director's duty of loyalty to us, for acts or omissions not in good faith or
involving knowing violations of law, or for actions resulting in improper
personal benefit to the director. The provision also does not affect a
director's responsibilities under any other law, such as federal securities laws
or state or federal environmental laws. Our bylaws provide that we shall
indemnify our officers and directors to the fullest extent permitted by
Pennsylvania law, including some instances in which indemnification is otherwise
discretionary under Pennsylvania law. Pennsylvania law permits us to provide
similar indemnification to employees and agents who are not directors or
officers. The determination of whether an individual meets the applicable
standard of conduct may be made by the disinterested directors, independent
legal counsel or the shareholders. Pennsylvania law also permits indemnification
in connection with a proceeding brought by or in the right of us to procure a
judgment in our favor. Insofar as indemnification for liabilities arising under
the Securities Act may be permitted to directors, officers or persons
controlling us pursuant to the foregoing provisions, we have been informed that
in the opinion of the Commission such indemnification is against public policy
as expressed in the Securities Act and is therefore unenforceable.

     In general, any of our officers or directors shall be indemnified by us
against expenses including attorneys' fees, judgments, fines and settlements
actually and reasonably incurred by that person in connection with a legal
proceeding as a result of such relationship, whether or not the indemnified
liability arises from an action by or in the right of us, if the officer or
director acted in good faith, and in the manner believed to be in or not opposed
to our best interest, and, with respect to any criminal action or proceeding,
had no reasonable cause to believe the conduct was unlawful. Such indemnity is
limited to the extent that (a) such person is not otherwise indemnified and (b)
such indemnification is not prohibited by Pennsylvania law or any other
applicable law.

     Any indemnification under the previous paragraph, unless ordered by a
court, shall be made by us only as authorized in the specific case upon the
determination that indemnification of the director or officer is proper in the
circumstances because that person has met the applicable standard of conduct set
forth above. This determination shall be made (a) by the Board of Directors by a
majority vote of a quorum of disinterested directors who are not parties to such
action or (b) if such quorum is not obtainable or, even if obtainable a quorum
of disinterested directors so directs, by independent legal counsel in a written
opinion. To the extent that our directors or officers shall be successful in
prosecuting an indemnity claim, the reasonable expenses of any such person and
the fees and expenses of any special legal counsel engaged to determine the
possibility of indemnification shall be borne by us.

     Expenses incurred by our directors or officers in defending a civil or
criminal action, suit or proceeding shall be paid by us in advance of the final
disposition of such action, suit or proceeding upon receipt of an undertaking by
or on behalf of such director or officer to repay such amount if it shall
ultimately be determined that person is not entitled to be indemnified by us as
authorized by our bylaws.

                                      II-1
<PAGE>   153

ITEM 21.  EXHIBITS AND FINANCIAL STATEMENT SCHEDULES

     (a) Exhibits

<TABLE>
<CAPTION>
EXHIBIT
NUMBER                       DESCRIPTION OF EXHIBITS
-------                      -----------------------
<C>        <S>
     2.1   Agreement and Plan of Merger, dated as of November 6, 2000,
           among VerticalNet, Truckee and SierraCities (included as
           Annex A to the Prospectus contained in this Registration
           Statement).
     3.1*  Amended and Restated Articles of Incorporation of
           VerticalNet (incorporated by reference to VerticalNet's
           Registration Statement on Form S-1, as amended, file no.
           333-68053).
     3.2*  Articles of Amendment to Amended and Restated Articles of
           Incorporation of VerticalNet (incorporated by reference to
           VerticalNet's Quarterly Report on 10-Q for the quarter ended
           June 30, 2000).
     3.3*  Amended and Restated Bylaws of VerticalNet (incorporated by
           reference to VerticalNet's Registration Statement on Form
           S-1, as amended, file no. 333-68053).
     4.1*  Specimen Common Stock Certificate (incorporated by reference
           to VerticalNet's Registration Statements on Form S-1, as
           amended, file no. 333-68053).
     4.2   Form of Tender Agreement, dated as of November 6, 2000, a
           substantially similar version of which has been executed by
           each of Depping 1999 Investment Limited Partnership, Thomas
           J. Depping, Sandy B. Ho, Redstone Group, Ltd., David C.
           Shindeldecker, and David L. Solomon (included as Annex B to
           the Prospectus contained in this Registration Statement).
     5.1   Opinion of James W. McKenzie, Jr. regarding the validity of
           the securities being registered.
     8.1   Opinion of Cooley Godward LLP regarding material federal
           income tax consequences of the offer and the merger.
     8.2   Opinion of Dewey Ballantine LLP regarding material federal
           income tax consequences of the offer and the merger.
    21.1   Subsidiaries of VerticalNet.
    23.1   Consent of KPMG LLP.
    23.2   Consent of Arthur Andersen LLP.
    23.3   Consent of Arthur Andersen LLP.
    23.4   Consent of Tonneson & Company CPAs PC.
    23.5   Consent of Kost Forer & Gabbay, a member of Ernst & Young,
           International.
    23.6   Consent of James W. McKenzie, Jr. (included in the opinion
           filed as Exhibit 5.1 to this Registration Statement).
    23.7   Consent of Cooley Godward LLP (included in the opinion filed
           as Exhibit 8.1 to this Registration Statement).
    23.8   Consent of Dewey Ballantine LLP (included in the opinion
           filed as Exhibit 8.2 to this Registration Statement).
    24.1   Power of Attorney (included on the signature page of this
           Registration Statement).
    99.1   Form of Letter of Transmittal.
    99.2   Form of Notice of Guaranteed Delivery.
    99.3   Form of Letter to Brokers, Dealers, etc.
    99.4   Form of Letter to Clients.
    99.5   Form of Letter to Participants in SierraCities' 401(k) plan.
    99.6   Form of Guidelines for Certification of Taxpayer
           Identification Number on Substitute Form W-9.
</TABLE>

---------------
* Incorporated by reference.

     (b) Not applicable.

ITEM 22.  UNDERTAKINGS.

     (a) The undersigned registrant hereby undertakes that, for purposes of
determining any liability under the Securities Act of 1933, each filing of the
registrant's annual report pursuant to Section 13(a) or 15(d) of the Securities
Exchange Act of 1934 (and, where applicable, each filing of an employee benefit
plan's

                                      II-2
<PAGE>   154

annual report pursuant to Section 15(d) of the Securities Exchange Act of 1934)
that is incorporated by reference in the registration statement shall be deemed
to be a new registration statement relating to the securities offered therein,
and the offering of such securities at that time be deemed to be the initial
bona fide offering thereof.

     (b) The undersigned registrant hereby undertakes as follows: that prior to
any public reoffering of the securities registered hereunder through use of a
prospectus which is a part of this registration statement, by a person or party
who is deemed to be an underwriter within the meaning of Rule 145(c), the issuer
undertakes that such reoffering prospectus will contain the information called
for by the applicable registration form with respect to reofferings by persons
who may be deemed underwriters, in addition to the information called for by the
other items of the applicable form.

     (c) The registrant undertakes that every prospectus: (i) that is filed
pursuant to paragraph (b) immediately preceding, or (ii) that purports to meet
the requirements of Section 10(a)(3) of the Act and is used in connection with
an offering of securities subject to Rule 415, will be filed as a part of an
amendment to the registration statement and will not be used until such
amendment is effective, and that, for purposes of determining any liability
under the Securities Act of 1933, each such post-effective amendment shall be
deemed to be a new registration statement relating to the securities offered
therein, and the offering of such securities at that time shall be deemed to be
the initial bona fide offering thereof.

     (d) Insofar as indemnification for liabilities arising under the Securities
Act may be permitted to directors, officers and controlling persons of the
registrant pursuant to the foregoing provisions, or otherwise, the registrant
has been advised that in the opinion of the Securities and Exchange Commission
such indemnification is against public policy as expressed in the Securities Act
and is, therefore, unenforceable. In the event that a claim for indemnification
against such liabilities (other than the payment by the registrant of expenses
incurred or paid by a director, officer or controlling person of the registrant
in the successful defense of any action, suit or proceeding) is asserted by such
director, officer or controlling person in connection with the securities being
registered, the registrant will, unless in the opinion of its counsel the matter
has been settled by controlling precedent, submit to a court of appropriate
jurisdiction the question whether such indemnification by it is against public
policy as expressed in the Securities Act and will be governed by the final
adjudication of such issue.

     (e) The undersigned registrant hereby undertakes to respond to requests for
information that is incorporated by reference into the prospectus pursuant to
Item 4, 10(b), 11 or 13 of this form, within one business day of receipt of such
request, and to send the incorporated documents by first class mail or other
equally prompt means. This includes information contained in documents filed
subsequent to the effective date of the registration statement through the date
of responding to the request.

     (f) The undersigned registrant hereby undertakes to supply by means of a
post-effective amendment all information concerning a transaction, and the
company being acquired involved therein, that was not subject of and included in
the registration statement when it became effective.

                                      II-3
<PAGE>   155

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act, the registrant has duly
caused this registration statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the Township of Horsham, Commonwealth
of Pennsylvania, on November 16, 2000.

                                          VERTICALNET, INC.

                                          By: /s/ JAMES W. MCKENZIE, JR.
                                            ------------------------------------
                                          Name: James W. McKenzie, Jr.
                                          Title: Senior Vice President, General
                                                 Counsel and Secretary

                               POWER OF ATTORNEY

     Each person whose signature appears below hereby appoints James W.
McKenzie, Jr. and Gene S. Godick, and both of them, either of whom may act
without the joinder of the other, as his true and lawful attorney-in-fact and
agent, with full power of substitution and resubstitution, for him and in his
name, place and stead, in any and all capacities, to sign any and all amendments
(including post-effective amendments) to this Registration Statement and any
other registration statement for the same offering filed pursuant to Rule 462
under the Securities Act of 1933, and to file the same, with all exhibits
thereto and all other documents in connection therewith, with the Commission,
granting unto said attorneys-in-fact and agents full power and authority to do
and perform each and every act and thing appropriate or necessary to be done, as
fully and for all intents and purposes as he might or could do in person, hereby
ratifying and confirming all that said attorneys-in-fact and agents or their
substitute or substitutes may lawfully do or cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, this
registration statement has been signed by the following persons in the
capacities and on the date or dates indicated.

<TABLE>
<C>                                                    <S>                           <C>
                 /s/ MARK L. WALSH                     Chairman of the Board of      November 16, 2000
---------------------------------------------------      Directors
                   Mark L. Walsh

               /s/ JOSEPH GALLI, JR.                   President, Chief Executive    November 16, 2000
---------------------------------------------------      Officer and Director
                 Joseph Galli, Jr.                       (principal executive
                                                         officer)

               /s/ MICHAEL J. HAGAN                    Executive Vice President,     November 16, 2000
---------------------------------------------------      Chief Operating Officer
                 Michael J. Hagan                        and Director

                /s/ GENE S. GODICK                     Executive Vice President      November 16, 2000
---------------------------------------------------      and Chief Financial
                  Gene S. Godick                         Officer (principal
                                                         financial officer and
                                                         accounting officer)

             /s/ DOUGLAS A. ALEXANDER                  Vice-Chairman of the Board    November 16, 2000
---------------------------------------------------      of Directors
               Douglas A. Alexander

              /s/ JEFFREY C. BALLOWE                   Director                      November 16, 2000
---------------------------------------------------
                Jeffrey C. Ballowe

            /s/ WALTER W. BUCKLEY, III                 Director                      November 16, 2000
---------------------------------------------------
              Walter W. Buckley, III

                 /s/ SATYA NADELLA                     Director                      November 16, 2000
---------------------------------------------------
                   Satya Nadella

                /s/ HOWARD D. ROSS                     Director                      November 16, 2000
---------------------------------------------------
                  Howard D. Ross
</TABLE>

                                      II-4
<PAGE>   156

                                 EXHIBIT INDEX

<TABLE>
<CAPTION>
EXHIBIT
NUMBER                       DESCRIPTION OF EXHIBITS
-------                      -----------------------
<C>        <S>
     2.1   Agreement and Plan of Merger, dated as of November 6, 2000,
           among VerticalNet, Truckee and SierraCities (included as
           Annex A to the Prospectus contained in this Registration
           Statement).
     3.1*  Amended and Restated Articles of Incorporation of
           VerticalNet (incorporated by reference to VerticalNet's
           Registration Statement on Form S-1, as amended, file no.
           333-68053).
     3.2*  Articles of Amendment to Amended and Restated Articles of
           Incorporation of VerticalNet (incorporated by reference to
           VerticalNet's Quarterly Report on 10-Q for the quarter ended
           June 30, 2000).
     3.3*  Amended and Restated Bylaws of VerticalNet (incorporated by
           reference to VerticalNet's Registration Statement on Form
           S-1, as amended, file no. 333-68053).
     4.1*  Specimen Common Stock Certificate (incorporated by reference
           to VerticalNet's Registration Statements on Form S-1, as
           amended, file no. 333-68053).
     4.2   Form of Tender Agreement, dated as of November 6, 2000, a
           substantially similar version of which has been executed by
           each of Depping 1999 Investment Limited Partnership, Thomas
           J. Depping, Sandy B. Ho, Redstone Group, Ltd., David C.
           Shindeldecker, and David L. Solomon (included as Annex B to
           the Prospectus contained in this Registration Statement).
     5.1   Opinion of James W. McKenzie, Jr. regarding the validity of
           the securities being registered.
     8.1   Opinion of Cooley Godward LLP regarding material federal
           income tax consequences of the offer and the merger.
     8.2   Opinion of Dewey Ballantine LLP regarding material federal
           income tax consequences of the offer and the merger.
    21.1   Subsidiaries of VerticalNet.
    23.1   Consent of KPMG LLP.
    23.2   Consent of Arthur Andersen LLP.
    23.3   Consent of Arthur Andersen LLP.
    23.4   Consent of Tonneson & Company CPAs PC.
    23.5   Consent of Kost Forer & Gabbay, a member of Ernst & Young,
           International.
    23.6   Consent of James W. McKenzie, Jr. (included in the opinion
           filed as Exhibit 5.1 to this Registration Statement).
    23.7   Consent of Cooley Godward LLP (included in the opinion filed
           as Exhibit 8.1 to this Registration Statement).
    23.8   Consent of Dewey Ballantine LLP (included in the opinion
           filed as Exhibit 8.2 to this Registration Statement).
    24.1   Power of Attorney (included on the signature page of this
           Registration Statement).
    99.1   Form of Letter of Transmittal.
    99.2   Form of Notice of Guaranteed Delivery.
    99.3   Form of Letter to Brokers, Dealers, etc.
    99.4   Form of Letter to Clients.
    99.5   Form of Letter to Participants in SierraCities' 401(k) plan.
    99.6   Form of Guidelines for Certification of Taxpayer
           Identification Number on Substitute Form W-9.
</TABLE>

---------------
* Incorporated by reference.


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