PREVIEW TRAVEL INC
8-A12G, 1998-10-30
TRANSPORTATION SERVICES
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<PAGE>
 
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  ___________

                                    FORM 8-A

               FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES
                    PURSUANT TO SECTION 12 (b) OR (g) OF THE
                        SECURITIES EXCHANGE ACT OF 1934


                              PREVIEW TRAVEL, INC.
             (Exact Name of Registrant as Specified in Its Charter)


<TABLE>

<S>                                                             <C>
               DELAWARE                                                     94-2965892
               --------                                                     ----------
(State of Incorporation or Organization)                        (IRS Employer Identification No.)
 
  747 FRONT STREET, SAN FRANCISCO, CA                                         94111
  -----------------------------------                                         -----
(Address of Principal Executive Offices)                                    (Zip Code)
</TABLE>

Securities to be registered pursuant to Section 12(b) of the Act:

<TABLE> 
<CAPTION> 

Title of each class                                Name of each exchange on which                            
to be so registered                                each class is to be registered                            
- -------------------                                ------------------------------                            
<S>                                                <C> 
       NONE                                                      NONE                                         
</TABLE>

       Securities to be registered pursuant to Section 12(g) of the Act:

                        PREFERRED SHARE PURCHASE RIGHTS
                        -------------------------------
                               (Title of Class)
<PAGE>
 
ITEM 1.  DESCRIPTION OF REGISTRANT'S SECURITIES TO BE REGISTERED.
         ------------------------------------------------------- 

     Effective as of October 28, 1998 the Board of Directors of Preview Travel,
Inc. (the "Company") declared a dividend of one preferred share purchase right
           -------                                                            
(a "Right") for each outstanding share of Common Stock, $0.001 par value (the
    -----                                                                    
"Common Shares"), of the Company. The dividend is payable on November 12, 1998
- --------------                                                                
(the "Record Date") to stockholders of record as of the close of business on
      -----------                                                           
that date.  Each Right entitles the registered holder to purchase from the
Company one one-thousandth of a share of Series A Participating Preferred Stock,
$0.001 par value, of the Company (the "Preferred Shares"), subject to
                                       ----------------              
adjustment, at a price of $100.00 per one-thousandth of a preferred share,
subject to adjustment (the "Purchase Price").  The description and terms of the
                            --------------                                     
Rights are set forth in a Preferred Shares Rights Agreement (the "Rights
                                                                  ------
Agreement") dated as of October 29, 1998 between the Company and U.S. Stock
- ---------                                                                  
Transfer Corporation as Rights Agent (the "Rights Agent").
                                           ------------   

     The following is a general description only and is subject to the detailed
terms and conditions of the Rights Agreement.  A copy of the Rights Agreement,
including the Certificate of Designations, the form of Rights Certificate and
the Summary of Rights to be provided to stockholders of the Company, is attached
as Exhibit 1 to this Registration Statement and is incorporated herein by
   ---------                                                             
reference.

RIGHTS EVIDENCED BY COMMON SHARE CERTIFICATES
- ---------------------------------------------

     The Rights will not be exercisable until the Distribution Date (defined
below).  Accordingly, Common Share certificates outstanding on the Record Date
will evidence the Rights related thereto, and Common Share certificates issued
after the Record Date will contain a notation incorporating the Rights Agreement
by reference.  Until the Distribution Date (or earlier redemption, exchange or
expiration of the Rights), the surrender or transfer of any certificates for
Common Shares, even without notation or a copy of the Summary of Rights being
attached thereto, will also constitute the transfer of the Rights associated
with the Common Shares represented by such certificate.

                                      -2-
<PAGE>
 
DISTRIBUTION DATE
- -----------------

     The Rights will separate from the Common Shares, certificates for the
rights ("Rights Certificates") will be issued and the Rights will become
         -------------------                                            
exercisable upon the earlier of:  (i) the close of business on the tenth day (or
such later date as may be determined by a majority of the Board of Directors)
following a public announcement that a person or group of affiliated or
associated persons has acquired, or obtained the right to acquire, beneficial
ownership of 20% or more of the outstanding Common Shares (an "Acquiring
                                                               ---------
Person") or (ii) the close of business on the tenth day (or such later date as
may be determined by a majority of the Board of Directors) following the
commencement of a tender offer or exchange offer, the consummation of which
would result in the beneficial ownership by a person or group of 20% or more of
the outstanding Common Shares.  The earlier of such dates is referred to as the
"Distribution Date".
 -----------------  

ISSUANCE OF RIGHTS CERTIFICATES, EXPIRATION OF RIGHTS
- -----------------------------------------------------

     As soon as practicable following the Distribution Date, separate Rights
Certificates will be mailed to holders of record of the Common Shares as of the
close of business on the Distribution Date and such separate Rights Certificates
alone will evidence the Rights from and after the Distribution Date.  Unless
otherwise determined by the Board of Directors, all Common Shares issued prior
to the Distribution Date will be issued with Rights.  Common Shares issued after
the Distribution Date may be issued with Rights if such shares are issued (i)
upon the exercise, conversion or exchange of securities issued after adoption of
the Rights Agreement or (ii) pursuant to the exercise of stock options or under
any employee benefit plan or arrangement.  Except as otherwise determined by the
Board of Directors, no other Common Shares issued after the Distribution Date
will be issued with Rights.  In addition, no Common Shares issued after the
Distribution Date will be issued with Rights if such issuance would result in
(or create a significant risk) (i) of material adverse tax consequences to the
Company or the person to whom such Rights Certificate would be issued or (ii)
that such options or plans would not qualify for otherwise available special tax
treatment.  The Rights will expire on October 28, 2008 (the "Final Expiration
                                                             ----------------
Date"), unless the Final Expiration Date is extended or unless the Rights are
- ----                                                                         
earlier 

                                      -3-
<PAGE>
 
redeemed or exchanged by the Company or expire upon consummation of certain
mergers, consolidations or sales of assets, as described below.

INITIAL EXERCISE OF THE RIGHTS
- -------------------------------

     Following the Distribution Date, and until the occurrence of one of the
subsequent events described below, holders of the Rights will be entitled to
receive, upon exercise and the payment of $100.00 (the "Purchase Price") per
                                                        --------------      
Right, one one-thousandth of a Preferred Share.

EXCHANGE PROVISION
- ------------------

     At any time after an Acquiring Person has become such and prior to the
Acquiring Person beneficially owning 50% or more of the outstanding Common
Shares, the Board of Directors may exchange the Rights (other than Rights owned
by the Acquiring Person or its affiliates), in whole or in part, at an exchange
ratio of one Common Share per Right (subject to adjustment).

RIGHT TO BUY COMMON SHARES AT HALF PRICE
- ----------------------------------------

     Unless the Rights are earlier redeemed or exchanged, in the event that an
Acquiring Person becomes such, other than pursuant to a tender offer which is
made for all of the outstanding Common Shares and approved by a majority of the
Board of Directors after determining that the offer is both adequate and
otherwise in the best interests of the Company and its stockholders (a
"Permitted Offer"), then proper provision will be made so that each holder of a
- ----------------                                                               
Right which has not theretofore been exercised (other than Rights beneficially
owned by the Acquiring Person, which will thereafter be void) will thereafter
have the right to receive, upon exercise of a Right, a number of Common Shares
having a then current value equal to two times the Purchase Price.  In the event
that the Company does not have a sufficient number of Common Shares available,
or the Board of Directors decides that such action is necessary or appropriate
and not contrary to the interests of Rights holders, the Company may, among
other things, instead substitute cash, assets or other securities for the Common
Shares into which the Rights would have otherwise been exercisable.

                                      -4-
<PAGE>
 
RIGHT TO BUY ACQUIRING COMPANY STOCK AT HALF PRICE
- --------------------------------------------------

     Similarly, unless the Rights are earlier redeemed or exchanged, in the
event that, after the Shares Acquisition Date (as defined below), (i) the
Company consolidates with or merges into another entity, (ii) another entity
consolidates with or merges into the Company or (iii) the Company sells or
otherwise transfers 50% or more of its consolidated assets or earning power,
proper provision must be made so that each holder of a Right which has not
theretofore been exercised (other than Rights beneficially owned by the
Acquiring Person, which will thereafter be void) will thereafter have the right
to receive, upon exercise, a number of shares of common stock of the acquiring
company having a then current value equal to two times the Purchase Price
(unless the transaction satisfies certain conditions and is consummated with a
person who acquired shares pursuant to a Permitted Offer, in which case the
Rights will expire).

ADJUSTMENTS TO PREVENT DILUTION
- -------------------------------

     The Purchase Price payable, the number of Rights and the number of
Preferred Shares, Common Shares or other securities or property issuable upon
exercise of the Rights are subject to adjustment from time to time to prevent
dilution as set forth in the Rights Agreement.  With certain exceptions, no
adjustment in the Purchase Price will be required until cumulative adjustments
require an adjustment of at least 1% in such Purchase Price.

RIGHTS AND PREFERENCES OF THE PREFERRED SHARES
- ----------------------------------------------

     Preferred Shares purchasable upon exercise of the Rights will not be
redeemable.  Each Preferred Share will be entitled to an aggregate dividend of
1,000 times the dividend declared per Common Share.  In the event of
liquidation, the holders of the Preferred Shares will be entitled to a
preferential liquidation payment equal to accrued but unpaid dividends plus the
greater of $1,000 per share or 1,000 times the aggregate per share amount to be
distributed to the holders of Common Shares.  Each Preferred Share will have
1,000 votes, voting together with the holders of Common Shares, except as
required by law or the Certificate of Determination of Rights, Preferences and
Privileges of Series A Participating Preferred Stock.  In the event of any
merger, 

                                      -5-
<PAGE>
 
consolidation or other transaction in which Common Shares are changed or
exchanged, each Preferred Share will be entitled to receive 1,000 times the
amount received per Common Share. These rights are protected by customary anti-
dilution provisions. Because of the nature of the dividend, liquidation and
voting rights of the Preferred Shares, the value of the one one-thousandth
interest in a Preferred Share purchasable upon exercise of each Right should
approximate the value of one Common Share.

REDEMPTION
- ----------

     At any time prior to the close of business on the earlier of (i) the tenth
day following the date (the "Shares Acquisition Date") of public announcement
                             -----------------------                         
that an Acquiring Person has become such or such later date as may be determined
by a majority of the Board of Directors and publicly announced by the Company or
(ii) the Final Expiration Date of the Rights, the Company may redeem the Rights
in whole, but not in part, at a price of $0.01 per Right ("Redemption Price").
                                                           ----------------   

NO STOCKHOLDERS' RIGHTS PRIOR TO EXERCISE
- -----------------------------------------

     Until a Right is exercised, the holder thereof, as such, will have no
rights as a stockholder of the Company (other than any rights resulting from
such holder's ownership of Common Shares), including, without limitation, the
right to vote or to receive dividends.

AMENDMENT OF RIGHTS AGREEMENT
- -----------------------------

     The provisions of the Rights Agreement may be supplemented or amended by
the Board of Directors in any manner prior to the Distribution Date without the
approval of Rights holders.  After the Distribution Date, the provisions of the
Rights Agreement may be supplemented or amended by the Board of Directors in
order to (i) cure any ambiguity, defect or inconsistency, (ii) to make changes
which are deemed necessary or advisable and do not adversely affect the
interests of holders of Rights (excluding the interests of any Acquiring
Person), or (iii) to shorten or lengthen any time period under the Rights
Agreement; provided, however, that no amendment to lengthen (A) the time period
governing redemption shall be made at such time as the Rights 

                                      -6-
<PAGE>
 
are not redeemable, or (B) any other period unless for the purpose of
protecting, enhancing or clarifying the rights of, and/or benefits to, the
holders of Rights.

CERTAIN ANTI-TAKEOVER EFFECTS
- -----------------------------

     The Rights approved by the Board of Directors are designed to protect and
maximize the value of the outstanding equity interests in the Company in the
event of an unsolicited attempt by an acquiror to take over the Company, in a
manner or on terms not approved by the Board of Directors.  Takeover attempts
frequently include coercive tactics to deprive a corporation's Board of
Directors and its stockholders of any real opportunity to determine the destiny
of the corporation.  The Rights have been declared by the Board of Directors in
order to deter such tactics, including a gradual accumulation of shares in the
open market of a 20% or greater position to be followed by a merger or a partial
or two-tier tender offer that does not treat all stockholders equally.  These
tactics unfairly pressure stockholders, squeeze them out of their investment
without giving them any real choice and deprive them of the full value of their
shares.

     The Rights are not intended to prevent a takeover of the Company and will
not do so.  The Rights are not exercisable in the event of a Permitted Offer, as
described above.  The Rights may be redeemed by the Company at $0.01 per Right
within ten days (or such later date as may be determined by a majority of the
Board of Directors) after the accumulation of 20% or more of the Company's
outstanding Common Shares by a single acquiror or group.  Accordingly, the
Rights should not preclude any merger or business combination approved by the
Board of Directors.  Issuance of the Rights does not in any way weaken the
financial strength of the Company or interfere with its business plans. The
issuance of the Rights has no immediate dilutive effect, will not affect
reported earnings per share, should not be taxable to the Company or to its
stockholders and will not change the way in which the Company's shares are
presently traded.  The Company's Board of Directors believes that the Rights
represent a sound and reasonable means of addressing the complex issues of
corporate policy created by the current takeover environment.  However, the
Rights may have the effect of rendering more difficult or discouraging an
acquisition of the Company deemed undesirable by the Board of Directors.  The

                                      -7-
<PAGE>
 
Rights may cause substantial dilution to a person or group that attempts to
acquire the Company on terms or in a manner not approved by the Board of
Directors, except pursuant to an offer conditioned upon the negation, purchase
or redemption of the Rights.

ITEM 2.   EXHIBITS.
          -------- 

          1.  Preferred Shares Rights Agreement, dated as of October 29, 1998,
              between Preview Travel, Inc. and U.S. Stock Transfer Corporation,
              including the Certificate of Designations, the form of Rights
              Certificate and the Summary of Rights attached thereto as Exhibits
              A, B and C, respectively.

                                      -8-
<PAGE>
 
                                   SIGNATURE

     Pursuant to the requirements of Section 12 of the Securities Exchange Act
of 1934, the registrant has duly caused this registration statement to be signed
on its behalf by the undersigned, thereto duly authorized.

                              PREVIEW TRAVEL, INC.


Date:  October 30, 1998       By: /s/ Kenneth Pelowski
                                  -----------------------------
                                  Kenneth Pelowski
                                  Executive Vice President and
                                  Chief Financial Officer

                                      -9-
<PAGE>
 
                              PREVIEW TRAVEL, INC.

                       REGISTRATION STATEMENT ON FORM 8-A

                                 EXHIBIT INDEX
                                 -------------

<TABLE>
<CAPTION>
 
  Exhibit
    No.                          Exhibit                               
- -----------     ----------------------------------------------         
<S>             <C>                                                    
       1        Preferred Shares Rights Agreement, dated as of         
                October 29, 1998, between Preview Travel, Inc.         
                and U.S. Stock Transfer Corporation, including         
                the Certificate of Designations, the form of           
                Rights Certificate and the Summary of Rights           
                attached thereto as Exhibits A, B and C,               
                respectively.                                           
</TABLE>

                                      -10-

<PAGE>
 
                                                                       EXHIBIT 1

================================================================================

                              PREVIEW TRAVEL, INC.

                                      AND

                        U.S. STOCK TRANSFER CORPORATION
                                        
                                  Rights Agent
                                        



                       PREFERRED SHARES RIGHTS AGREEMENT



                          Dated as of October 29, 1998



================================================================================
<PAGE>
 
<TABLE>
<CAPTION>

                               TABLE OF CONTENTS

                                                                                                  Page
                                                                                                  ----
<S>                                                                                               <C>
Section 1.  Certain Definitions...............................................................    1
Section 2.  Appointment of Rights Agent.......................................................    5
Section 3.  Issuance of Rights Certificate....................................................    5
Section 4.  Form of Rights Certificate........................................................    7
Section 5.  Countersignature and Registration.................................................    8
Section 6.  Transfer, Split Up, Combination and Exchange of Rights Certificates;..............    8
            Mutilated, Destroyed, Lost or Stolen Rights Certificates
Section 7.  Exercise of Rights; Purchase Price; Expiration Date of Right......................    9
Section 8.  Cancellation and Destruction of Rights Certificate................................    11
Section 9.  Reservation and Availability of Preferred Share...................................    11
Section 10. Preferred Shares Record Date......................................................    13
Section 11. Adjustment of Purchase Price, Number of Shares or Number of Right.................    13
Section 12. Certificate of Adjusted Purchase Price or Number of Shares........................    21
Section 13. Consolidation, Merger or Sale or Transfer of Assets or Earning Power..............    24
Section 14. Fractional Rights and Fractional Shares...........................................    24
Section 15. Rights of Action..................................................................    24
Section 16. Agreement of Rights Holders.......................................................    25
Section 17. Rights Certificate Holder Not Deemed a Stockholder................................    25
Section 18. Concerning the Rights Agent.......................................................    25
Section 19. Merger or Consolidation or Change of Name of Rights Agent.........................    26
Section 20. Duties of Rights Agent............................................................    26
Section 21. Change of Rights Agent............................................................    28
Section 22. Issuance of New Rights Certificates...............................................    29
Section 23. Redemption........................................................................    30
Section 24. Exchange..........................................................................    31
Section 25. Notice of Certain Events..........................................................    32
Section 26. Notices...........................................................................    33
Section 27. Supplements and Amendments........................................................    34
Section 28. Successors........................................................................    34
Section 29. Determinations and Actions by the Board of Directors, etc.........................    34
Section 30. Benefits of this Agreement........................................................    34
Section 31. Severability......................................................................    35
Section 32. Governing Law.....................................................................    35
Section 33. Counterparts......................................................................    35
Section 34. Descriptive Headings..............................................................    35
</TABLE> 

                                       i
<PAGE>
 
EXHIBITS

Exhibit A  Form of Certificate of Designation

Exhibit B  Form of Rights Certificate

Exhibit C  Summary of Rights

                                       ii
<PAGE>
 
                       PREFERRED SHARES RIGHTS AGREEMENT
                       ---------------------------------
                       
     Agreement, dated as of October 29, 1998, between Preview Travel, Inc., a
Delaware corporation (the "COMPANY"), and U.S. Stock Transfer Corporation (the
"RIGHTS AGENT").

     On October 28, 1998 (the "RIGHTS DIVIDEND DECLARATION DATE"), the Board of
Directors of the Company authorized and declared a dividend of one Preferred
Share purchase right (a "RIGHT") for each Common Share (as hereinafter defined)
of the Company outstanding as of the Close of Business (as hereinafter defined)
on November 12, 1998 (the "RECORD DATE"), each Right representing the right to
purchase one one-thousandth of a share of Series A Participating Preferred Stock
(as such number may be adjusted pursuant to the provisions of this Agreement),
having the rights, preferences and privileges set forth in the form of
Certificate of Designation of Rights, Preferences and Privileges of Series A
Participating Preferred Stock attached hereto as Exhibit A, upon the terms and
subject to the conditions herein set forth,  and further authorized and directed
the issuance of one Right (as such number may be adjusted pursuant to the
provisions of this Agreement) with respect to each Common Share that shall
become outstanding between the Record Date and the earlier of the Distribution
Date and the Expiration Date (as such terms are hereinafter defined), and in
certain circumstances after the Distribution Date.

     NOW, THEREFORE, in consideration of the promises and the mutual agreements
herein set forth, the parties hereby agree as follows:

     Section 1.  Certain Definitions.     For purposes of this Agreement, the
                 -------------------                                         
following terms have the meanings indicated:

             (a) "ACQUIRING PERSON" shall mean any Person who or which, together
with all Affiliates and Associates of such Person, shall be the Beneficial Owner
of 20% or more of the Common Shares then outstanding, but shall not include the
Company, any Subsidiary of the Company or any employee benefit plan of the
Company or of any Subsidiary of the Company, or any entity holding Common Shares
for or pursuant to the terms of any such plan.  Notwithstanding the foregoing,
no Person shall be deemed to be an Acquiring Person either (i) as the result of
an acquisition of Common Shares by the Company which, by reducing the number of
shares outstanding, increases the proportionate number of shares beneficially
owned by such Person to 20% or more of the Common Shares of the Company then
outstanding; provided, however, that if a Person shall become the Beneficial
             --------  -------                                              
Owner of 20% or more of the Common Shares of the Company then outstanding by
reason of share purchases by the Company and shall, after such share purchases
by the Company, become the Beneficial Owner of any additional Common Shares of
the Company (other than pursuant to a dividend or distribution paid or made by
the Company on the outstanding Common Shares in Common Shares or pursuant to a
split or subdivision of the outstanding Common Shares), then such Person shall
be deemed to be an Acquiring Person unless upon becoming the Beneficial Owner of
such additional Common Shares of the Company such Person does not beneficially
own 20% or more of the Common Shares of the Company then outstanding.
Notwithstanding the foregoing, (i) if the Board of Directors of the Company
determines in good faith that a Person who would otherwise be an 

                                      -1-
<PAGE>
 
"Acquiring Person" as defined pursuant to the foregoing provisions of this
Section 1(a) has become such inadvertently (including, without limitation,
because (A) such Person was unaware that it beneficially owned a percentage of
the Common Shares that would otherwise cause such Person to be an "Acquiring
Person," as defined pursuant to the foregoing provisions of this Section 1(a) or
(B) such Person was aware of the extent of the Common Shares it beneficially
owned but had no actual knowledge of the consequences of such beneficial
ownership under this Agreement) and without any intention of changing or
influencing control of the Company, and if such Person divested or divests as
promptly as practicable a sufficient number of Common Shares that such Person
would no longer be an "Acquiring Person," as defined pursuant to the foregoing
provisions of this Section 1(a), then such person shall not be deemed to be or
to have become an "Acquiring Person" for the purposes of this Agreement; and
(ii) if, as of the date hereof, any Person is the Beneficial Owner of 20% or
more of the Common Shares outstanding, such Person shall not become an
"Acquiring Person," as defined pursuant to the foregoing provisions of this
Section 1(a), unless and until such time as such Person shall become the
Beneficial Owner of additional Common Shares (other than pursuant to a dividend
or distribution paid or made by the Company on the outstanding Common Shares in
Common Shares or pursuant to a split or subdivision of the outstanding Common
Shares), unless, upon becoming the Beneficial Owner of such additional Common
Shares, such Person is not then the Beneficial Owner of 20% or more of the
Common Shares then outstanding.

          (b) "AFFILIATE" and "ASSOCIATE" shall have the respective meanings
ascribed to such terms in Rule 12b-2 of the General Rules and Regulations under
the Securities Exchange Act of 1934, as amended (the "EXCHANGE ACT"), as in
effect on the date of this Agreement.

          (c) A Person shall be deemed the "BENEFICIAL OWNER" of and shall be
deemed to "BENEFICIALLY OWN" any securities:

              (i)  which such Person or any of such Person's Affiliates or
Associates beneficially owns, directly or indirectly, for purposes of Section
13(d) of the Exchange Act and Rule 13d-3 thereunder (or any comparable or
successor law or regulation);

              (ii) which such Person or any of such Person's Affiliates or
Associates has (A) the right to acquire (whether such right is exercisable
immediately or only after the passage of time) pursuant to any agreement,
arrangement or understanding, whether or not in writing (other than customary
agreements with and between underwriters and selling group members with respect
to a bona fide public offering of securities), or upon the exercise of
conversion rights, exchange rights, rights (other than the Rights), warrants or
options, or otherwise; provided, however, that a Person shall not be deemed
                       --------  -------                                   
pursuant to this Section l(c)(ii)(A) to be the Beneficial Owner of, or to
beneficially own, (1) securities tendered pursuant to a tender or exchange offer
made by or on behalf of such Person or any of such Person's Affiliates or
Associates until such tendered securities are accepted for purchase or exchange,
or (2) securities which a Person or any of such Person's Affiliates or
Associates may be deemed to have the right to acquire pursuant to any merger or
other acquisition agreement between the Company and such Person (or one or more
of its Affiliates or Associates) if such agreement has been approved by the
Board of Directors prior to a Triggering Event; or (B) the right to vote

                                      -2-
<PAGE>
 
pursuant to any agreement, arrangement or understanding; provided, however, that
                                                         --------  -------      
a Person shall not be deemed the Beneficial Owner of, or to beneficially own,
any security under this Section l(c)(ii)(B) if the agreement, arrangement or
understanding to vote such security (1) arises solely from a revocable proxy or
consent given to such Person in response to a public proxy or consent
solicitation made pursuant to, and in accordance with, the applicable rules and
regulations of the Exchange Act and (2) is not also then reportable on Schedule
13D under the Exchange Act (or any comparable or successor report); or

          (iii) which are beneficially owned, directly or indirectly, by any
other Person (or any Affiliate or Associate thereof) with which such Person or
any of such Person's Affiliates or Associates has any agreement, arrangement or
understanding (whether or not in writing) (other than customary agreements with
and between underwriters and selling group members with respect to a bona fide
public offering of securities) for the purpose of acquiring, holding, voting
(except to the extent contemplated by the proviso to Section l(c)(ii)(B)) or
disposing of any securities of the Company; provided, however, that in no case
                                            --------  -------                 
shall an officer or director of the Company be deemed (x) the Beneficial Owner
of any securities beneficially owned by another officer or director of the
Company solely by reason of actions undertaken by such persons in their capacity
as officers or directors of the Company or (y) the Beneficial Owner of
securities held of record by the trustee of any employee benefit plan of the
Company or any Subsidiary of the Company for the benefit of any employee of the
Company or any Subsidiary of the Company, other than the officer or director, by
reason of any influence that such officer or director may have over the voting
of the securities held in the plan.

          (d)   "BOARD OF DIRECTORS" shall mean the Board of Directors of the
Company then in office.

          (e)   "BUSINESS DAY" shall mean any day other than a Saturday, Sunday
or a day on which banking institutions in San Francisco, California are
authorized or obligated by law or executive order to close.

          (f)   "CLOSE OF BUSINESS" on any given date shall mean 5:00 P.M., San
Francisco, California time, on such date; provided, however, that if such date
                                          --------  -------                   
is not a Business Day it shall mean 5:00 P.M., San Francisco, California time,
on the next succeeding Business Day.

          (g)   "COMMON SHARES" when used with reference to the Company shall
mean the shares of Common Stock of the Company, $0.001 par value. "Common
Shares" when used with reference to any Person other than the Company shall mean
the capital stock (or equity interest) with the greatest voting power of such
other Person or, if such other Person is a Subsidiary of another Person, the
Person or Persons which ultimately control such first-mentioned Person.

          (h)   "DISTRIBUTION DATE" shall mean the earlier of (i) the Close of
Business on the tenth day (or such later date as may be determined by action of
a majority of the Board of Directors) after the Shares Acquisition Date (or, if
the tenth day after the Shares Acquisition Date occurs before the Record Date,
the Close of Business on the Record Date) or (ii) the Close of 

                                      -3-
<PAGE>
 
Business on the tenth day (or such later date as may be determined by action of
a majority of the Board of Directors) after the date that a tender or exchange
offer by any Person (other than the Company, any Subsidiary of the Company, any
employee benefit plan of the Company or of any Subsidiary of the Company, or any
Person or entity organized, appointed or established by the Company for or
pursuant to the terms of any such plan) is first published or sent or given
within the meaning of Rule 14d-2(a) of the General Rules and Regulations under
the Exchange Act, if, assuming the successful consummation thereof, such Person
would be the Beneficial Owner of 20% or more of the shares of Common Stock then
outstanding.

          (i) "EQUIVALENT SHARES" shall mean Preferred Shares and any other
class or series of capital stock of the Company that is entitled to participate
in dividends and other distributions, including distributions upon the
liquidation, dissolution or winding up of the Company, on a proportional basis
with the Common Shares.  In calculating the number of any class or series of
Equivalent Shares for purposes of Section 11 of this Agreement, the number of
shares, or fractions of a share, of such class or series of capital stock that
is entitled to the same dividend or distribution as a whole Common Share shall
be deemed to be one share.

          (j) "EXPIRATION DATE" shall mean the earliest of (i) the Close of
Business on the Final Expiration Date, (ii) the Redemption Date, (iii) the time
at which the Board of Directors orders the exchange of the Rights as provided in
Section 24 of this Agreement or (iv) the consummation of a transaction
contemplated by Section 13(d) of this Agreement.

          (k) "FINAL EXPIRATION DATE" shall mean October 28, 2008.

          (1) "PERMITTED OFFER" shall mean a tender offer for all outstanding
Common Shares made in the manner prescribed by Section 14(d) of the Exchange Act
and the rules and regulations promulgated thereunder; provided, however, that a
                                                      --------  -------        
majority of the Board of Directors has determined that the offer is both
adequate and otherwise in the best interests of the Company and its stockholders
(taking into account all factors that the Board of Directors deems relevant,
including without limitation prices that could reasonably be achieved if the
Company or its assets were sold on an orderly basis designed to realize maximum
value).

          (m) "PERSON" shall mean any individual, firm, corporation or other
entity, and shall include any successor (by merger or otherwise) of such entity.

          (n) "PREFERRED SHARES" shall mean shares of Series A Participating
Preferred Stock of the Company.

          (o) "PURCHASE PRICE" shall have the meaning set forth in Section 4(a)
of this Agreement.

          (p) "RECORD DATE" shall have the meaning set forth in the recitals at
the beginning of this Agreement.

          (q) "REDEMPTION DATE" shall mean the time at which the Board of
Directors of the Company orders redemption of the Rights as provided in Section
23 of this Agreement.

                                      -4-
<PAGE>
 
          (r) "REDEMPTION PRICE" shall have the meaning set forth in Section
23(a) of this Agreement.

          (s) "RIGHT" shall have the meaning set forth in the recitals at the
beginning of this Agreement.

          (t) "RIGHTS DIVIDEND DECLARATION DATE" shall have the meaning set
forth in the recitals at the beginning of this Agreement.

          (u) "SECTION 13 EVENT" shall mean any event described in clause (i),
(ii) or (iii) of Section 13(a) of this Agreement.

          (v) "SHARES ACQUISITION DATE" shall mean the first date of public
announcement (which, for purposes of this definition, shall include, without
limitation, a report filed pursuant to Section 13(d) of the Exchange Act) by the
Company or an Acquiring Person that an Acquiring Person has become such;
provided that, if such person is determined not to have become an Acquiring
- -------- ----                                                              
Person pursuant to Section l(a)(ii) of this Agreement, then no Shares
Acquisition Date shall be deemed to have occurred.

          (w) "SUBSIDIARY" of any Person shall mean any corporation or other
entity of which an amount of voting securities sufficient to elect a majority of
the directors or Persons having similar authority of such corporation or other
entity is beneficially owned, directly or indirectly, by such Person, or any
corporation or other entity otherwise controlled by such Person.

          (x)  "TOTAL EXERCISE PRICE" shall have the meaning set forth in
Section 4(a) of this Agreement.

          (y) "TRADING DAY" shall have the meaning set forth in Section 11(d) of
this Agreement.

          (z) A "TRIGGERING EVENT" shall be deemed to have occurred upon any
Person (other than the Company, any Subsidiary of the Company, any employee
benefit plan of the Company or any Subsidiary of the Company, or any entity
holding Common Shares for or pursuant to the terms of any such plan), together
with all Affiliates and Associates of such Person, becoming an Acquiring Person.

     Section 2.  Appointment of Rights Agent.     The Company hereby appoints
                 ---------------------------                                 
the Rights Agent to act as agent for the Company in accordance with the terms
and conditions of this Agreement, and the Rights Agent hereby accepts such
appointment.  The Company may from time to time appoint such co-Rights Agents as
it may deem necessary or desirable.

     Section 3.  Issuance of Rights Certificates.
                 -------------------------------   

          (a) Until the Distribution Date, (i) the Rights will be evidenced
(subject to the provisions of Sections 3(b) and 3(c) of this Agreement) by the
certificates for Common Shares 

                                      -5-
<PAGE>
 
registered in the names of the holders thereof (which certificates shall also be
deemed to be Rights Certificates) and not by separate Rights Certificates and
(ii) the right to receive Rights Certificates will be transferable only in
connection with the transfer of Common Shares. Until the earlier of the
Distribution Date or the Expiration Date, the surrender for transfer of such
certificates for Common Shares shall also constitute the surrender for transfer
of the Rights associated with the Common Shares represented thereby. As soon as
practicable after the Distribution Date, the Company will prepare and execute,
the Rights Agent will countersign, and the Company will send or cause to be sent
(and the Rights Agent will, if requested, send) by first-class, postage-prepaid
mail, to each record holder of Common Shares as of the close of business on the
Distribution Date, at the address of such holder shown on the records of the
Company, a Rights Certificate, in substantially the form of Exhibit B to this
Agreement (a "RIGHTS CERTIFICATE"), evidencing one Right for each Common Share
so held, subject to adjustment as provided herein. In the event that an
adjustment in the number of Rights per Common Share has been made pursuant to
Section 11(a)(i), Section 11(i) or Section 11(p) of this Agreement, then at the
time of distribution of the Rights Certificates, the Company shall make the
necessary and appropriate rounding adjustments (in accordance with Section 14(a)
of this Agreement) so that Rights Certificates representing only whole numbers
of Rights are distributed and cash is paid in lieu of any fractional Rights. As
of the Distribution Date, the Rights will be evidenced solely by such Rights
Certificates and may be transferred by the transfer of the Rights Certificates
as permitted hereby, separately and apart from any transfer of one or more
Common Shares, and the holders of such Rights Certificates as listed in the
records of the Company or any transfer agent or registrar for the Rights shall
be the record holders thereof.

          (b) On the Record Date or as soon as practicable thereafter, the
Company will send (or cause to be sent) a copy of a Summary of Rights in
substantially the form of Exhibit C to this Agreement (the "SUMMARY OF RIGHTS"),
by first-class, postage-prepaid mail, to each record holder of Common Shares as
of the close of business on the Record Date, at the address of such holder shown
on the records of the Company.

          (c) Unless the Board of Directors by resolution adopted at or before
the time of the issuance (including pursuant to the exercise of rights under the
Company's benefit plans) of any Common Shares specifies to the contrary, Rights
shall be issued in respect of all Common Shares that are issued after the Record
Date but prior to the earlier of the Distribution Date or the Expiration Date
or, in certain circumstances provided in Section 22 of this Agreement, after the
Distribution Date.  Certificates representing such Common Shares shall also be
deemed to be certificates for Rights, and shall bear the following legend:

     This certificate also evidences and entitles the holder hereof to certain
     rights as set forth in a Preferred Shares Rights Agreement between Preview
     Travel, Inc. and U.S. Stock Transfer Corporation, as the Rights Agent,
     dated as of October 29, 1998 (the "RIGHTS AGREEMENT"), the terms of which
     are hereby incorporated herein by reference and a copy of which is on file
     at the principal executive offices of Preview Travel, Inc..  Under certain
     circumstances, as set forth in the Rights Agreement, such Rights will be
     evidenced by separate certificates and will no longer be evidenced by this
     certificate. Preview Travel, Inc. will mail to the holder of this
     certificate a copy of the Rights 

                                      -6-
<PAGE>
 
     Agreement without charge after receipt of a written request therefor. Under
     certain circumstances set forth in the Rights Agreement, Rights issued to,
     or held by, any Person who is, was or becomes an Acquiring Person or any
     Affiliate or Associate thereof (as such terms are defined in the Rights
     Agreement), whether currently held by or on behalf of such Person or by any
     subsequent holder, may become null and void.

With respect to such certificates containing the foregoing legend, until the
earlier of (i) the Distribution Date or (ii) the Expiration Date, the Rights
associated with the Common Shares represented by such certificates shall be
evidenced by such certificates alone, and the surrender for transfer of any such
certificate shall also constitute the transfer of the Rights associated with the
Common Shares represented thereby.  In the event that the Company purchases or
acquires any Common Shares after the Record Date but prior to the Distribution
Date, any Rights associated with such Common Shares shall be deemed canceled and
retired so that the Company shall not be entitled to exercise any Rights
associated with the Common Shares which are no longer outstanding.

     Section 4.  Form of Rights Certificates.
                 ---------------------------   

             (a) The Rights Certificates (and the forms of election to purchase
Common Shares and of assignment to be printed on the reverse thereof) shall be
substantially in the form of Exhibit B to this Agreement and may have such marks
of identification or designation and such legends, summaries or endorsements
printed thereon as the Company may deem appropriate and as are not inconsistent
with the provisions of this Agreement, or as may be required to comply with any
applicable law or with any rule or regulation made pursuant thereto or with any
rule or regulation of any stock exchange on which the Rights may from time to
time be listed, or to conform to usage.  Subject to the provisions of Section 11
and Section 22 of this Agreement, the Rights Certificates, whenever distributed,
shall be dated as of the Record Date (or in the case of Rights issued with
respect to Common Shares issued by the Company after the Record Date, as of the
date of issuance of such Common Shares), shall show the date of countersignature
by the Rights Agent, and on their face shall entitle the holders thereof to
purchase such number of one-thousandths of a Preferred Share as shall be set
forth therein at the price set forth therein (such exercise price per one one-
thousandth of a Preferred Share being hereinafter referred to as the "PURCHASE
PRICE" and the aggregate exercise price of all Preferred Shares issuable upon
exercise of one Right being hereinafter referred to as the "TOTAL EXERCISE
PRICE"), but the number and type of securities purchasable upon the exercise of
each Right and the Purchase Price shall be subject to adjustment as provided
herein.

             (b) Any Rights Certificate issued pursuant to Section 3(a) or
Section 22 of this Agreement that represents Rights beneficially owned by: (i)
an Acquiring Person or any Associate or Affiliate of an Acquiring Person, (ii) a
transferee of an Acquiring Person (or of any such Associate or Affiliate) who
becomes a transferee after the Acquiring Person becomes such or (iii) a
transferee of an Acquiring Person (or of any such Associate or Affiliate) who
becomes a transferee prior to or concurrently with the Acquiring Person becoming
such and receives such Rights pursuant to either (A) a transfer (whether or not
for consideration) from the Acquiring Person to holders of equity interests in
such Acquiring Person or to any Person with whom such 

                                      -7-
<PAGE>
 
Acquiring Person has any continuing agreement, arrangement or understanding
regarding the transferred Rights or (B) a transfer that the Board of Directors
of the Company has determined is part of a plan, arrangement or understanding
that has as a primary purpose or effect avoidance of Section 7(e) of this
Agreement, and any Rights Certificate issued pursuant to Section 6 or Section 11
of this Agreement upon transfer, exchange, replacement or adjustment of any
other Rights Certificate referred to in this sentence, shall contain (to the
extent feasible) the following legend:

     The Rights represented by this Rights Certificate are or were beneficially
     owned by a Person who was or became an Acquiring Person or an Affiliate or
     Associate of an Acquiring Person (as such terms are defined in the Rights
     Agreement).  Accordingly, this Rights Certificate and the Rights
     represented hereby may become null and void in the circumstances specified
     in Section 7(e) of the Rights Agreement.

     Section 5.  Countersignature and Registration.
                 --------------------------------- 

             (a) The Rights Certificates shall be executed on behalf of the
Company by its Chairman of the Board, its Chief Executive Officer, its President
or any Vice President, either manually or by facsimile signature, and by the
Secretary or an Assistant Secretary of the Company, either manually or by
facsimile signature, and shall have affixed thereto the Company's seal (if any)
or a facsimile thereof. The Rights Certificates shall be manually countersigned
by the Rights Agent and shall not be valid for any purpose unless countersigned.
In case any officer of the Company who shall have signed any of the Rights
Certificates shall cease to be such officer of the Company before
countersignature by the Rights Agent and issuance and delivery by the Company,
such Rights Certificates, nevertheless, may be countersigned by the Rights Agent
and issued and delivered by the Company with the same force and effect as though
the person who signed such Rights Certificates had not ceased to be such officer
of the Company; and any Rights Certificate may be signed on behalf of the
Company by any person who, at the actual date of the execution of such Rights
Certificate, shall be a proper officer of the Company to sign such Rights
Certificate, although at the date of the execution of this Rights Agreement any
such person was not such an officer.

             (b) Following the Distribution Date, the Rights Agent will keep or
cause to be kept, at its office designated for such purposes, books for
registration and transfer of the Rights Certificates issued hereunder.  Such
books shall show the names and addresses of the respective holders of the Rights
Certificates, the number of Rights evidenced on its face by each of the Rights
Certificates and the date of each of the Rights Certificates.

     Section 6.  Transfer, Split Up, Combination and Exchange of Rights
                 ------------------------------------------------------
Certificates; Mutilated, Destroyed, Lost or Stolen Rights Certificates.
- -----------------------------------------------------------------------

             (a) Subject to the provisions of Sections 7(e), 14 and 24 of this
Agreement, at any time after the Close of Business on the Distribution Date, and
at or prior to the Close of Business on the Expiration Date, any Rights
Certificate or Rights Certificates may be transferred, split up, combined or
exchanged for another Rights Certificate or Rights Certificates, entitling the
registered holder to purchase a like number of one-thousandths of a Preferred
Share (or, 

                                      -8-
<PAGE>
 
following a Triggering Event, other securities, cash or other assets, as the
case may be) as the Rights Certificate or Rights Certificates surrendered then
entitled such holder to purchase. Any registered holder desiring to transfer,
split up, combine or exchange any Rights Certificate or Rights Certificates
shall make such request in writing delivered to the Rights Agent, and shall
surrender the Rights Certificate or Rights Certificates to be transferred, split
up, combined or exchanged at the office of the Rights Agent designated for such
purpose. Neither the Rights Agent nor the Company shall be obligated to take any
action whatsoever with respect to the transfer of any such surrendered Rights
Certificate until the registered holder shall have completed and signed the
certificate contained in the form of assignment on the reverse side of such
Rights Certificate and shall have provided such additional evidence of the
identity of the Beneficial Owner (or former Beneficial Owner) or Affiliates or
Associates thereof as the Company shall reasonably request. Thereupon the Rights
Agent shall, subject to Sections 7(e), 14 and 24 of this Agreement, countersign
and deliver to the person entitled thereto a Rights Certificate or Rights
Certificates, as the case may be, as so requested. The Company may require
payment of a sum sufficient to cover any tax or governmental charge that may be
imposed in connection with any transfer, split up, combination or exchange of
Rights Certificates.

             (b) Upon receipt by the Company and the Rights Agent of evidence
reasonably satisfactory to them of the loss, theft, destruction or mutilation of
a Rights Certificate, and, in case of loss, theft or destruction, of indemnity
or security reasonably satisfactory to them, and, at the Company's request,
reimbursement to the Company and the Rights Agent of all reasonable expenses
incidental thereto, and upon surrender to the Rights Agent and cancellation of
the Rights Certificate if mutilated, the Company will make and deliver a new
Rights Certificate of like tenor to the Rights Agent for delivery to the
registered holder in lieu of the Rights Certificate so lost, stolen, destroyed
or mutilated.

     Section 7.  Exercise of Rights; Purchase Price; Expiration Date of Rights.
                 -------------------------------------------------------------

             (a) Subject to Section 7(e), 23(b) or 24 of this Agreement, the
registered holder of any Rights Certificate may exercise the Rights evidenced
thereby (except as otherwise provided herein) in whole or in part at any time
after the Distribution Date upon surrender of the Rights Certificate, with the
form of election to purchase on the reverse side thereof duly executed, to the
Rights Agent at the office of the Rights Agent designated for such purpose,
together with payment of the Purchase Price for each one-thousandth of a
Preferred Share as to which the Rights are exercised, at or prior to the
Expiration Date.

             (b) The Purchase Price for each one-thousandth of a Preferred Share
issuable pursuant to the exercise of a Right shall initially be $100.00, shall
be subject to adjustment from time to time as provided in Sections 11 and 13 of
this Agreement and shall be payable in lawful money of the United States of
America in accordance with paragraph (c) below.

             (c) Upon receipt of a Rights Certificate representing exercisable
Rights, with the form of election to purchase duly executed, accompanied by
payment of the Purchase Price for the number of one-thousandths of a Preferred
Share (or other securities or property, as the case may be) to be purchased and
an amount equal to any applicable transfer tax required to be 

                                      -9-
<PAGE>
 
paid by the holder of such Rights Certificate in accordance with Section 9 of
this Agreement in cash, or by certified check or cashier's check payable to the
order of the Company, the Rights Agent shall, subject to Section 20(k) of this
Agreement, thereupon promptly (i) (A) requisition from any transfer agent of the
Preferred Shares (or make available, if the Rights Agent is the transfer agent
for the Preferred Shares) a certificate or certificates for the number of one-
thousandths of a Preferred Share to be purchased and the Company hereby
irrevocably authorizes its transfer agent to comply with all such requests or
(B) if the Company shall have elected to deposit the total number of one-
thousandths of a Preferred Share issuable upon exercise of the Rights hereunder
with a depository agent, requisition from the depository agent of depository
receipts representing such number of one-thousandths of a Preferred Share as are
to be purchased (in which case certificates for the Preferred Shares represented
by such receipts shall be deposited by the transfer agent with the depository
agent) and the Company hereby directs the depository agent to comply with such
request, (ii) when appropriate, requisition from the Company the amount of cash
to be paid in lieu of issuance of fractional shares in accordance with Section
14 of this Agreement, (iii) after receipt of such certificates or depository
receipts, cause the same to be delivered to or upon the order of the registered
holder of such Rights Certificate, registered in such name or names as may be
designated by such holder and (iv) when appropriate, after receipt thereof,
deliver such cash to or upon the order of the registered holder of such Rights
Certificate. The payment of the Purchase Price (as such amount may be reduced
(including to zero) pursuant to Section 11(a)(iv) of this Agreement) may be made
in cash or by certified check or cashier's check payable to the order of the
Company. In the event that the Company is obligated to issue other securities of
the Company, pay cash and/or distribute other property pursuant to Section 11(a)
of this Agreement, the Company will make all arrangements necessary so that such
other securities, cash and/or other property are available for distribution by
the Rights Agent, if and when appropriate.

          (d) In case the registered holder of any Rights Certificate shall
exercise less than all the Rights evidenced thereby, a new Rights Certificate
evidencing Rights equivalent to the Rights remaining unexercised shall be issued
by the Rights Agent to the registered holder of such Rights Certificate or to
his or her duly authorized assigns, subject to the provisions of Section 14 of
this Agreement.

          (e) Notwithstanding anything in this Agreement to the contrary, from
and after the first occurrence of a Triggering Event or a Section 13 Event, any
Rights beneficially owned by (i) an Acquiring Person or an Associate or
Affiliate of an Acquiring Person, (ii) a transferee of an Acquiring Person (or
of any such Associate or Affiliate) who becomes a transferee after the Acquiring
Person becomes such (a "POST TRANSFEREE"), (iii) a transferee of an Acquiring
Person (or of any such Associate or Affiliate) who becomes a transferee prior to
or concurrently with the Acquiring Person becoming such and receives such Rights
pursuant to either (A) a transfer (whether or not for consideration) from the
Acquiring Person to holders of equity interests in such Acquiring Person or to
any Person with whom the Acquiring Person has any continuing agreement,
arrangement or understanding regarding the transferred Rights or (B) a transfer
which the Board of Directors has determined is part of a plan, arrangement or
understanding which has as a primary purpose or effect the avoidance of this
Section 7(e) (a "PRIOR TRANSFEREE") or (iv) any subsequent transferee receiving
transferred Rights from a Post 

                                      -10-
<PAGE>
 
Transferee or a Prior Transferee, either directly or through one or more
intermediate transferees, shall become null and void without any further action
and no holder of such Rights shall have any rights whatsoever with respect to
such Rights, whether under any provision of this Agreement or otherwise. The
Company shall use all reasonable efforts to ensure that the provisions of this
Section 7(e) and Section 4(b) of this Agreement are complied with, but shall
have no liability to any holder of Rights Certificates or to any other Person as
a result of its failure to make any determinations with respect to an Acquiring
Person or any of such Acquiring Person's Affiliates, Associates or transferees
hereunder.

             (f) Notwithstanding anything in this Agreement to the contrary,
neither the Rights Agent nor the Company shall be obligated to undertake any
action with respect to a registered holder upon the occurrence of any purported
exercise as set forth in this Section 7 unless such registered holder shall have
(i) completed and signed the certificate contained in the form of election to
purchase set forth on the reverse side of the Rights Certificate surrendered for
such exercise and (ii) provided such additional evidence of the identity of the
Beneficial Owner (or former Beneficial Owner) or Affiliates or Associates
thereof as the Company shall reasonably request.

     Section 8.  Cancellation and Destruction of Rights Certificates.  All
                 ---------------------------------------------------        
Rights Certificates surrendered for the purpose of exercise, transfer, split up,
combination or exchange shall, if surrendered to the Company or to any of its
agents, be delivered to the Rights Agent for cancellation or in canceled form,
or, if surrendered to the Rights Agent, shall be canceled by it, and no Rights
Certificates shall be issued in lieu thereof except as expressly permitted by
any of the provisions of this Agreement. The Company shall deliver to the Rights
Agent for cancellation and retirement, and the Rights Agent shall so cancel and
retire, any other Rights Certificate purchased or acquired by the Company
otherwise than upon the exercise thereof.  The Rights Agent shall deliver all
canceled Rights Certificates to the Company, or shall, at the written request of
the Company, destroy such canceled Rights Certificates, and in such case shall
deliver a certificate of destruction thereof to the Company.

     Section 9.  Reservation and Availability of Preferred Shares.
                 ------------------------------------------------   

             (a) The Company covenants and agrees that it will use its best
efforts to cause to be reserved and kept available out of and to the extent of
its authorized and unissued shares of preferred stock not reserved for another
purpose (and, following the occurrence of a Triggering Event, out of its
authorized and unissued shares of Common Shares and/or other securities), the
number of Preferred Shares (and, following the occurrence of the Triggering
Event, Common Shares and/or other securities) that will be sufficient to permit
the exercise in full of all outstanding Rights.

             (b) If the Company shall hereafter list any of its Preferred Shares
on a national securities exchange, then so long as the Preferred Shares (and,
following the occurrence of a Triggering Event, Common Shares and/or other
securities) issuable and deliverable upon exercise of the Rights may be listed
on a national securities exchange, the Company shall use its best efforts to
cause, from and after such time as the Rights become exercisable (but only to
the 

                                      -11-
<PAGE>
 
extent that it is reasonably likely that the Rights will be exercised), all
shares reserved for such issuance to be listed on such exchange upon official
notice of issuance upon such exercise.

          (c) The Company shall use its best efforts to (i) file, as soon as
practicable following the earliest date after the first occurrence of a
Triggering Event in which the consideration to be delivered by the Company upon
exercise of the Rights has been determined in accordance with Sections 11(a)(ii)
or 11(a)(iv) of this Agreement, or as soon as is required by law following the
Distribution Date, as the case may be, a registration statement under the
Securities Act of 1933, as amended (the "SECURITIES ACT"), with respect to the
securities purchasable upon exercise of the Rights on an appropriate form, (ii)
cause such registration statement to become effective as soon as practicable
after such filing and (iii) cause such registration statement to remain
effective (with a prospectus at all times meeting the requirements of the
Securities Act) until the earlier of (A) the date as of which the Rights are no
longer exercisable for such securities and (B) the date of expiration of the
Rights. The Company may temporarily suspend, for a period not to exceed ninety
(90) days after the date set forth in clause (i) of the first sentence of this
Section 9(c), the exercisability of the Rights in order to prepare and file such
registration statement and permit it to become effective.  Upon any such
suspension, the Company shall issue a public announcement stating, and notify
the Rights Agent, that the exercisability of the Rights has been temporarily
suspended, as well as a public announcement and notification to the Rights Agent
at such time as the suspension is no longer in effect.  The Company will also
take such action as may be appropriate under, or to ensure compliance with, the
securities or "blue sky" laws of the various states in connection with the
exercisability of the Rights.  Notwithstanding any provision of this Agreement
to the contrary, the Rights shall not be exercisable in any jurisdiction, unless
the requisite qualification in such jurisdiction shall have been obtained, or an
exemption therefrom shall be available, and until a registration statement has
been declared effective.

          (d) The Company covenants and agrees that it will take all such action
as may be necessary to ensure that all Preferred Shares delivered upon exercise
of Rights shall, at the time of delivery of the certificates for such Preferred
Shares (subject to payment of the Purchase Price), be duly and validly
authorized and issued and fully paid and nonassessable shares.

          (e) The Company further covenants and agrees that it will pay when due
and payable any and all federal and state transfer taxes and charges which may
be payable in respect of the original issuance or delivery of the Rights
Certificates or of any Preferred Shares upon the exercise of Rights.  The
Company shall not, however, be required to pay any transfer tax which may be
payable in respect of any transfer or delivery of Rights Certificates to a
person other than, or the issuance or delivery of certificates or depository
receipts for the Preferred Shares in a name other than that of, the registered
holder of the Rights Certificate evidencing Rights surrendered for exercise or
to issue or to deliver any certificates or depository receipts for Preferred
Shares upon the exercise of any Rights until any such tax shall have been paid
(any such tax being payable by the holder of such Rights Certificate at the time
of surrender) or until it has been established to the Company's satisfaction
that no such tax is due.

                                      -12-
<PAGE>
 
     Section 10.  Preferred Shares Record Date.  Each person in whose name any
                  ----------------------------                                  
certificate for a number of one-thousandths of a Preferred Share is issued upon
the exercise of Rights shall for all purposes be deemed to have become the
holder of record of Preferred Shares represented thereby on, and such
certificate shall be dated, the date upon which the Rights Certificate
evidencing such Rights was duly surrendered and payment of the Purchase Price
multiplied by the number of one-thousandths of a Preferred Share with respect to
which the Rights have been exercised (and any applicable transfer taxes) was
made; provided, however, that if the date of such surrender and payment is a
      --------  -------                                                     
date upon which the Preferred Shares transfer books of the Company are closed,
such person shall be deemed to have become the record holder of such shares on,
and such certificate shall be dated, the next succeeding Business Day on which
the Preferred Shares transfer books of the Company are open.  Prior to the
exercise of the Rights evidenced thereby, the holder of a Rights Certificate
shall not be entitled to any rights of a holder of Preferred Shares for which
the Rights shall be exercisable, including, without limitation, the right to
vote, to receive dividends or other distributions or to exercise any preemptive
rights, and shall not be entitled to receive any notice of any proceedings of
the Company, except as provided herein.

     Section 11.  Adjustment of Purchase Price, Number of Shares or Number of
                  -----------------------------------------------------------
Rights.  The Purchase Price, the number and kind of shares or other property
- ------                                                                        
covered by each Right and the number of Rights outstanding are subject to
adjustment from time to time as provided in this Section 11.

             (a)  (i)  In the event the Company shall at any time after the date
of this Agreement (A) declare a dividend on the Common Shares payable in Common
Shares, (B) subdivide the outstanding Common Shares, (C) combine the outstanding
Common Shares (by reverse stock split or otherwise) into a smaller number of
Common Shares, or (D) issue any shares of its capital stock in a
reclassification of the Common Shares (including any such reclassification in
connection with a consolidation or merger in which the Company is the continuing
or surviving corporation), then, in each such event, except as otherwise
provided in this Section 11(a) and Section 7(e) of this Agreement: (1) each of
the Rights outstanding at the time of the record date for such dividend or the
effective date of such subdivision, combination or reclassification shall be
proportionately adjusted to that number of Rights (calculated to the nearest one
ten-thousandth (1/10,000) of a Right) equal to a fraction (the "EXCHANGE
RATIO"), the numerator of which shall be the total number of Common Shares or
shares of capital stock issued in such dividend, subdivision, combination or
reclassification of the Common Shares outstanding immediately following such
dividend, subdivision, combination or reclassification and the denominator of
which shall be the total number of Common Shares outstanding immediately prior
to such time, and the number of Rights that shall thereafter be issued with
respect to each Common Share or share of such other capital stock that shall
become outstanding thereafter prior to the Distribution Date shall be equal to
the total number of outstanding Rights immediately after such event (as adjusted
pursuant to this clause (1)) divided by the total number of outstanding Common
Shares or shares of such other capital stock immediately after such event
(subject to further adjustment pursuant to the provisions of this Agreement);
(2) the Purchase Price in effect at the time of the record date for such
dividend or of the effective date of such subdivision, combination or
reclassification shall be adjusted so that the Purchase Price thereafter 

                                      -13-
<PAGE>
 
shall equal the result obtained by dividing the Purchase Price in effect
immediately prior to such time by the Exchange Ratio; provided, however, that in
                                                      --------  ------- 
no event shall the consideration to be paid upon the exercise of one Right be
less than the aggregate par value of the shares of capital stock of the Company
issuable upon exercise of such Right; and (3) the number of Preferred Shares or
shares of such other capital stock issuable upon the exercise of each Right
shall remain unchanged immediately after such event, but, in the event of a
reclassification, the kind of shares issuable upon the exercise of each Right
immediately after such reclassification shall be adjusted to be the kind of
shares of such other capital stock issued in such reclassification, rather than
Preferred Shares. If an event occurs which would require an adjustment under
both this Section 11(a)(i) and Section 11(a)(ii) of this Agreement, the
adjustment provided for in this Section 11(a)(i) shall be in addition to, and
shall be made prior to, any adjustment required pursuant to Section 11(a)(ii) of
this Agreement.

          (ii)   Subject to Section 24 of this Agreement, in the event a
Triggering Event shall have occurred, then promptly following such Triggering
Event, proper provision shall be made so that each holder of a Right, except as
provided in Section 7(e) of this Agreement, shall thereafter have the right to
receive for each Right, upon exercise thereof in accordance with the terms of
this Agreement and payment of the then-current Total Exercise Price, in lieu of
a number of one-thousandths of a Preferred Share, such number of Common Shares
of the Company as shall equal the result obtained by multiplying the then-
current Purchase Price by the then number of one-thousandths of a Preferred
Share for which a Right was exercisable (or would have been exercisable if the
Distribution Date had occurred) immediately prior to the first occurrence of a
Triggering Event, and dividing that product by 50% of the current per share
market price (determined pursuant to Section 11(d) of this Agreement) for Common
Shares on the date of occurrence of the Triggering Event (such number of shares
being hereinafter referred to as the "ADJUSTMENT SHARES").

          (iii)  The right to buy Common Shares of the Company pursuant to
Section 11(a)(ii) of this Agreement shall not arise as a result of any Person
becoming an Acquiring Person through an acquisition of Common Shares pursuant to
a Permitted Offer.

          (iv)   In lieu of issuing Common Shares in accordance with Section
11(a)(ii) of this Agreement, the Company may, if the Board of Directors
determines that such action is necessary or appropriate and not contrary to the
interest of holders of Rights (and, in the event that the number of Common
Shares which are authorized by the Company's Certificate of Incorporation but
not outstanding or reserved for issuance for purposes other than upon exercise
of the Rights are not sufficient to permit the exercise in full of the Rights,
or if any necessary regulatory approval for such issuance has not been obtained
by the Company, the Company shall): (A) determine the excess of (1) the value of
the Common Shares issuable upon the exercise of a Right (the "CURRENT VALUE")
over (2) the Purchase Price (such excess, the "SPREAD") and (B) with respect to
each Right, make adequate provision to substitute for such Common Shares, upon
exercise of the Rights, (1) cash, (2) a reduction in the Purchase Price, (3)
other equity securities of the Company (including, without limitation, shares or
units of shares of any series of Preferred Stock which the Board of Directors
has deemed to have the same value as Common Shares (such shares or units of
shares of Preferred Stock are herein called "COMMON 

                                      -14-
<PAGE>
 
STOCK EQUIVALENTS")), except to the extent that the Company has not obtained any
necessary stockholder or regulatory approval for such issuance, (4) debt
securities of the Company, except to the extent that the Company has not
obtained any necessary stockholder or regulatory approval for such issuance, (5)
other assets or (6) any combination of the foregoing, having an aggregate value
equal to the Current Value, where such aggregate value has been determined by
the Board of Directors based upon the advice of a nationally recognized
investment banking firm selected by the Board of Directors; provided, however,
                                                            --------  -------
if the Company shall not have made adequate provision to deliver value pursuant
to clause (B) above within thirty (30) days following the later of (x) the first
occurrence of a Triggering Event and (y) the date on which the Company's right
of redemption pursuant to Section 23(a) expires (the later of (x) and (y) being
referred to herein as the "SECTION 11(A)(II) TRIGGER DATE"), then the Company
shall be obligated to deliver, upon the surrender for exercise of a Right and
without requiring payment of the Purchase Price, Common Shares (to the extent
available), except to the extent that the Company has not obtained any necessary
stockholder or regulatory approval for such issuance, and then, if necessary,
cash, which shares and/or cash have an aggregate value equal to the Spread. If
the Board of Directors shall determine in good faith that it is likely that
sufficient additional Common Shares could be authorized for issuance upon
exercise in full of the Rights or that any necessary regulatory approval for
such issuance will be obtained, the thirty (30) day period set forth above may
be extended to the extent necessary, but not more than ninety (90) days after
the Section 11(a)(ii) Trigger Date, in order that the Company may seek
stockholder approval for the authorization of such additional shares or take
action to obtain such regulatory approval (such period, as it may be extended,
the "SUBSTITUTION PERIOD"). To the extent that the Company determines that some
action need be taken pursuant to the first and/or second sentences of this
Section 11(a)(iv), the Company (x) shall provide, subject to Section 7(e) of
this Agreement, that such action shall apply uniformly to all outstanding Rights
and (y) may suspend the exercisability of the Rights until the expiration of the
Substitution Period in order to seek any authorization of additional shares, to
take any action to obtain any required regulatory approval and/or to decide the
appropriate form of distribution to be made pursuant to such first sentence and
to determine the value thereof. In the event of any such suspension, the Company
shall issue a public announcement stating that the exercisability of the Rights
has been temporarily suspended, as well as a public announcement at such time as
the suspension is no longer in effect. For purposes of this Section 11(a)(iv),
the value of the Common Shares shall be the current per share market price (as
determined pursuant to Section 11(d) of this Agreement) of the Common Shares on
the Section 11(a)(ii) Trigger Date and the value of any "common stock
equivalent" shall be deemed to have the same value as the Common Shares on such
date.

          (b) In case the Company shall, at any time after the date of this
Agreement, fix a record date for the issuance of rights, options or warrants to
all holders of Common Shares or of any class or series of Equivalent Shares
entitling such holders (for a period expiring within forty-five (45) calendar
days after such record date) to subscribe for or purchase Common Shares or
Equivalent Shares or securities convertible into Common Shares or Equivalent
Shares at a price per share (or having a conversion price per share, if a
security convertible into Common Shares or Equivalent Shares) less than the then
current per share market price of the Common Shares or Equivalent Shares (as
defined in Section 11(d)) on such record date, then, in each such case, the
Purchase Price to be in effect after such record date shall be determined by
multiplying 

                                      -15-
<PAGE>
 
the Purchase Price in effect immediately prior to such record date by a
fraction, the numerator of which shall be the number of Common Shares and
Equivalent Shares (if any) outstanding on such record date, plus the number of
Common Shares or Equivalent Shares, as the case may be, which the aggregate
offering price of the total number of Common Shares or Equivalent Shares, as the
case may be, so to be offered (and/or the aggregate initial conversion price of
the convertible securities so to be offered) would purchase at such current
market price, and the denominator of which shall be the number of Common Shares
and Equivalent Shares (if any) outstanding on such record date, plus the number
of additional Common Shares or Equivalent Shares, as the case may be, to be
offered for subscription or purchase (or into which the convertible securities
so to be offered are initially convertible). In case such subscription price may
be paid in a consideration part or all of which shall be in a form other than
cash, the value of such consideration shall be as determined in good faith by
the Board of Directors, whose determination shall be described in a statement
filed with the Rights Agent and shall be binding on the Rights Agent and the
holders of the Rights. Common Shares and Equivalent Shares owned by or held for
the account of the Company shall not be deemed outstanding for the purpose of
any such computation. Such adjustment shall be made successively whenever such a
record date is fixed, and in the event that such rights, options or warrants are
not so issued, the Purchase Price shall be adjusted to be the Purchase Price
which would then be in effect if such record date had not been fixed.

          (c) In case the Company shall, at any time after the date of this
Agreement, fix a record date for the making of a distribution to all holders of
the Common Shares or of any class or series of Equivalent Shares (including any
such distribution made in connection with a consolidation or merger in which the
Company is the continuing or surviving corporation) of evidences of indebtedness
or assets (other than a regular quarterly cash dividend, if any, or a dividend
payable in Common Shares) or subscription rights, options or warrants (excluding
those referred to in Section 11(b)), then, in each such case, the Purchase Price
to be in effect after such record date shall be determined by multiplying the
Purchase Price in effect immediately prior to such record date by a fraction,
the numerator of which shall be the current market price (as determined pursuant
to Section 11(d) of this Agreement) of a Common Share or an Equivalent Share on
such record date, less the fair market value (as determined in good faith by the
Board of Directors, whose determination shall be described in a statement filed
with the Rights Agent) of the portion of the cash, assets or evidences of
indebtedness so to be distributed or of such subscription rights or warrants
applicable to a Common Share or Equivalent Share, as the case may be, and the
denominator of which shall be such current market price (as determined pursuant
to Section 11(d) of this Agreement) of a Common Share or Equivalent Share on
such record date.  Such adjustments shall be made successively whenever such a
record date is fixed, and in the event that such distribution is not so made,
the Purchase Price shall be adjusted to be the Purchase Price which would have
been in effect if such record date had not been fixed.

          (d) For the purpose of any computation hereunder, other than
computations made pursuant to Section 11(a)(iv) of this Agreement, the "CURRENT
PER SHARE MARKET PRICE" of any security (a "SECURITY" for the purpose of this
Section 11(d)) on any date shall be deemed to be the average of the daily
closing prices per share of such Security for the thirty (30) consecutive
Trading Days (as such term is hereinafter defined) immediately prior to such
date, 

                                      -16-
<PAGE>
 
and for purposes of computations made pursuant to Section 11(a)(iv) of this
Agreement, the "current per share market price" of any Security on any date
shall be deemed to be the average of the daily closing prices per share of such
Security for the ten (10) consecutive Trading Days immediately prior to such
date; provided, however, that in the event that the current per share market
      --------  -------                                                     
price of the Security is determined during a period following the announcement
by the issuer of such Security of (i) a dividend or distribution on such
Security payable in shares of such Security or securities convertible into such
shares or (ii) any subdivision, combination or reclassification of such
Security, and prior to the expiration of the requisite thirty (30) Trading Day
or ten (10) Trading Day period, after the ex-dividend date for such dividend or
distribution, or the record date for such subdivision, combination or
reclassification, then, and in each such case, the current per share market
price shall be appropriately adjusted to reflect the current market price per
share equivalent of such Security.  The closing price for each day shall be the
last sale price, regular way, or, in case no such sale takes place on such day,
the average of the closing bid and asked prices, regular way, in either case as
reported in the principal consolidated transaction reporting system with respect
to securities listed or admitted to trading on the New York Stock Exchange or,
if the Security is not listed or admitted to trading on the New York Stock
Exchange, as reported in the principal consolidated transaction reporting system
with respect to securities listed on the principal national securities exchange
on which the Security is listed or admitted to trading or, if the Security is
not listed or admitted to trading on any national securities exchange, the last
sale price or, if such last sale price is not reported, the average of the high
bid and low asked prices in the over-the-counter market, as reported by the
National Association of Securities Dealers, Inc. Automated Quotations System
("NASDAQ") or such other system then in use, or, if on any such date the
Security is not quoted by any such organization, the average of the closing bid
and asked prices as furnished by a professional market maker making a market in
the Security selected by the Board of Directors.  If on any such date no market
maker is making a market in the Common Shares, the fair value of such shares on
such date as determined in good faith by the Board of Directors shall be used.
The term "TRADING DAY" shall mean a day on which the principal national
securities exchange on which the Security is listed or admitted to trading is
open for the transaction of business or, if the Security is not listed or
admitted to trading on any national securities exchange, a Business Day.  If the
Common Shares are not publicly held or so listed or traded, "current per share
market price" shall mean the fair value per share as determined in good faith by
the Board of Directors, whose determination shall be described in a statement
filed with the Rights Agent and shall be conclusive for all purposes.

          (e) Anything herein to the contrary notwithstanding, no adjustment in
the Purchase Price shall be required unless such adjustment would require an
increase or decrease of at least 1% in the Purchase Price; provided, however,
                                                           --------  ------- 
that any adjustments which by reason of this Section 11(e) are not required to
be made shall be carried forward and taken into account in any subsequent
adjustment.  All calculations under this Section 11 shall be made to the nearest
cent or to the nearest ten-thousandth of a Common Share or other share or one
hundred-thousandth of a Preferred Share, as the case may be.  Notwithstanding
the first sentence of this Section 11(e), any adjustment required by this
Section 11 shall be made no later than the earlier of (i) three (3) years from
the date of the transaction which requires such adjustment or (ii) the
Expiration Date.

                                      -17-
<PAGE>
 
          (f) If as a result of an adjustment made pursuant to Sections 11(a) or
13(a) of this Agreement, the holder of any Right thereafter exercised shall
become entitled to receive any shares of capital stock other than Preferred
Shares, thereafter the number of such other shares so receivable upon exercise
of any Right and if required, the Purchase Price thereof, shall be subject to
adjustment from time to time in a manner and on terms as nearly equivalent as
practicable to the provisions with respect to the Common Shares contained in
Sections 11(a), (b), (c), (e), (h), (i), (j), (k), (1) and (m), and the
provisions of Sections 7, 9, 10, 13 and 14 with respect to the Preferred Shares
shall apply on like terms to any such other shares.

          (g) All Rights originally issued by the Company subsequent to any
adjustment made to the Purchase Price hereunder shall evidence the right to
purchase, at the adjusted Purchase Price, the number of one-thousandths of a
Preferred Share purchasable from time to time hereunder upon exercise of the
Rights, all subject to further adjustment as provided herein.

          (h) Unless the Company shall have exercised its election as provided
in Section 11(i), upon each adjustment of the Purchase Price as a result of the
calculations made in Section 11(b), each Right outstanding immediately prior to
the making of such adjustment shall thereafter evidence the right to purchase,
at the adjusted Purchase Price, that number of Preferred Shares (calculated to
the nearest one hundred-thousandth of a share) obtained by (i) multiplying (x)
the number of Preferred Shares covered by a Right immediately prior to this
adjustment, by (y) the Purchase Price in effect immediately prior to such
adjustment of the Purchase Price, and (ii) dividing the product so obtained by
the Purchase Price in effect immediately after such adjustment of the Purchase
Price.

          (i) The Company may elect on or after the date of any adjustment of
the Purchase Price as a result of the calculations made in Section 11(b) to
adjust the number of Rights, in substitution for any adjustment in the number of
Preferred Shares purchasable upon the exercise of a Right.  Each of the Rights
outstanding after such adjustment of the number of Rights shall be exercisable
for the number of one-thousandths of a Preferred Share for which a Right was
exercisable immediately prior to such adjustment.  Each Right held of record
prior to such adjustment of the number of Rights shall become that number of
Rights (calculated to the nearest ten-thousandth) obtained by dividing the
Purchase Price in effect immediately prior to adjustment of the Purchase Price
by the Purchase Price in effect immediately after adjustment of the Purchase
Price.  The Company shall make a public announcement of its election to adjust
the number of Rights, indicating the record date for the adjustment, and, if
known at the time, the amount of the adjustment to be made.  This record date
may be the date on which the Purchase Price is adjusted or any day thereafter,
but, if the Rights Certificates have been issued, shall be at least ten (10)
days later than the date of the public announcement.  If Rights Certificates
have been issued, upon each adjustment of the number of Rights pursuant to this
Section 11(i), the Company shall, as promptly as practicable, cause to be
distributed to holders of record of Rights Certificates on such record date
Rights Certificates evidencing, subject to Section 14 of this Agreement, the
additional Rights to which such holders shall be entitled as a result of such
adjustment, or, at the option of the Company, shall cause to be distributed to
such holders of record in substitution and replacement for the Rights
Certificates held by such holders prior to the date of adjustment, and upon
surrender thereof, if required by the Company, new Rights 

                                      -18-
<PAGE>
 
Certificates evidencing all the Rights to which such holders shall be entitled
after such adjustment. Rights Certificates so to be distributed shall be issued,
executed and countersigned in the manner provided for herein (and may bear, at
the option of the Company, the adjusted Purchase Price) and shall be registered
in the names of the holders of record of Rights Certificates on the record date
specified in the public announcement.

          (j) Irrespective of any adjustment or change in the Purchase Price or
the number of Preferred Shares issuable upon the exercise of the Rights, the
Rights Certificates theretofore and thereafter issued may continue to express
the Purchase Price per one one-thousandth of a Preferred Share and the number of
one-thousandths of a Preferred Share which were expressed in the initial Rights
Certificates issued hereunder.

          (k) Before taking any action that would cause an adjustment reducing
the Purchase Price below the par or stated value, if any, of the number of one-
thousandths of a Preferred Share issuable upon exercise of the Rights, the
Company shall take any corporate action which may, in the opinion of its
counsel, be necessary in order that the Company may validly and legally issue as
fully paid and nonassessable shares such number of one-thousandths of a
Preferred Share at such adjusted Purchase Price.

          (1) In any case in which this Section 11 shall require that an
adjustment in the Purchase Price be made effective as of a record date for a
specified event, the Company may elect to defer until the occurrence of such
event the issuing to the holder of any Right exercised after such record date of
the number of one-thousandths of a Preferred Share and other capital stock or
securities of the Company, if any, issuable upon such exercise over and above
the number of one-thousandths of a Preferred Share and other capital stock or
securities of the Company, if any, issuable upon such exercise on the basis of
the Purchase Price in effect prior to such adjustment; provided, however, that
                                                       --------  -------      
the Company shall deliver to such holder a due bill or other appropriate
instrument evidencing such holder's right to receive such additional shares
(fractional or otherwise) upon the occurrence of the event requiring such
adjustment.

          (m) Anything in this Section 11 to the contrary notwithstanding, prior
to the Distribution Date, the Company shall be entitled to make such reductions
in the Purchase Price, in addition to those adjustments expressly required by
this Section 11, as and to the extent that it in its sole discretion shall
determine to be advisable in order that any (i) consolidation or subdivision of
the Preferred or Common Shares, (ii) issuance wholly for cash of any Preferred
or Common Shares at less than the current market price, (iii) issuance wholly
for cash of Preferred or Common Shares or securities which by their terms are
convertible into or exchangeable for Preferred or Common Shares, (iv) stock
dividends or (v) issuance of rights, options or warrants referred to in this
Section 11, hereafter made by the Company to holders of its Preferred or Common
Shares shall not be taxable to such stockholders.

          (n) The Company covenants and agrees that it shall not, at any time
after the Distribution Date, effect or permit to occur any Triggering Event or
Section 13 Event, if (i) at the time or immediately after such Triggering Event
or Section 13 Event there are any rights, warrants or other instruments or
securities outstanding or agreements in effect which would 

                                      -19-
<PAGE>
 
substantially diminish or otherwise eliminate the benefits intended to be
afforded by the Rights or (ii) prior to, simultaneously with or immediately
after such Section 13 Event, the stockholders of the Person who constitutes, or
would constitute, the "Principal Party" for purposes of Section 13(b) of this
Agreement shall have received a distribution of Rights previously owned by such
Person or any of its Affiliates and Associates.

          (o) The Company covenants and agrees that, after the Distribution
Date, it will not, except as permitted by Sections 23, 24 or 27 of this
Agreement, take (or permit to be taken) any action if at the time such action is
taken it is reasonably foreseeable that such action will diminish substantially
or otherwise eliminate the benefits intended to be afforded by the Rights.

          (p) Anything in this Agreement to the contrary notwithstanding, in the
event the Company shall at any time after the date of this Agreement (A) declare
a dividend on the Preferred Shares payable in Preferred Shares, (B) subdivide
the outstanding Preferred Shares, (C) combine the outstanding Preferred Shares
(by reverse stock split or otherwise) into a smaller number of Preferred Shares,
or (D) issue any shares of its capital stock in a reclassification of the
Preferred Shares (including any such reclassification in connection with a
consolidation or merger in which the Company is the continuing or surviving
corporation), then, in each such event, except as otherwise provided in this
Section 11 and Section 7(e) of this Agreement: (1) each of the Rights
outstanding at the time of the record date for such dividend or the effective
date of such subdivision, combination or reclassification shall be
proportionately adjusted to that number of Rights (calculated to the nearest one
ten-thousandth (1/10,000) of a Right) equal to a fraction (the "EXCHANGE
FRACTION"), the numerator of which shall be the total number of Preferred Shares
or shares of capital stock issued in such reclassification of the Preferred
Shares outstanding immediately following such time and the denominator of which
shall be the total number of Preferred Shares outstanding immediately prior to
such time, and the number of Rights that shall thereafter be issued with respect
to each Common Share or share of other capital stock that shall be issued in a
reclassification of the Common Shares prior to the Distribution Date shall be
equal to the total number of outstanding Rights immediately after such event (as
adjusted pursuant to this clause (1)) divided by the total number of outstanding
Common Shares or shares of such other capital stock immediately after such event
(subject to further adjustment pursuant to the provisions of this Agreement);
(2) the Purchase Price in effect at the time of the record date for such
dividend or of the effective date of such subdivision, combination or
reclassification shall be adjusted so that the Purchase Price thereafter shall
equal the result obtained by dividing the Purchase Price in effect immediately
prior to such time by the Exchange Fraction; provided, however, that in no event
                                             --------  -------                  
shall the consideration to be paid upon the exercise of one Right be less than
the aggregate par value of the shares of capital stock of the Company issuable
upon exercise of such Right; and (3) the number of one-thousandths of a
Preferred Share or share of such other capital stock issuable upon the exercise
of each Right shall remain unchanged immediately after such event, but, in the
event of a reclassification, the kind of shares issuable upon the exercise of
each Right immediately after such reclassification shall be adjusted to be the
kind of shares of such other capital stock issued in such reclassification,
rather than Preferred Shares.

                                      -20-
<PAGE>
 
     Section 12.  Certificate of Adjusted Purchase Price or Number of Shares  .
                  ----------------------------------------------------------    
Whenever an adjustment is made as provided in Sections 11 and 13 of this
Agreement, the Company shall promptly (a) prepare a certificate setting forth
such adjustment and a brief statement of the facts accounting for such
adjustment, (b) file with the Rights Agent and with each transfer agent for the
Preferred Shares a copy of such certificate and (c) mail a brief summary thereof
to each holder of a Rights Certificate in accordance with Section 26 of this
Agreement.  Notwithstanding the foregoing sentence, the failure of the Company
to make such certification or give such notice shall not affect the validity of
such adjustment or the force or effect of the requirement for such adjustment.
The Rights Agent shall be fully protected in relying on any such certificate and
on any adjustment contained therein and shall not be deemed to have knowledge of
such adjustment unless and until it shall have received such certificate.

     Section 13. Consolidation, Merger or Sale or Transfer of Assets or Earning
                 --------------------------------------------------------------
Power.
- -----   

             (a) In the event that, following the Shares Acquisition Date,
directly or indirectly:

                 (i)   the Company shall consolidate with, or merge with and
into, any other Person (other than a Subsidiary of the Company in a transaction
the principal purpose of which is to change the state of incorporation of the
Company or that complies with Section 11(o) of this Agreement);

                 (ii)  any Person (other than a Subsidiary of the Company in a
transaction that complies with Section 11(o) of this Agreement) shall
consolidate with the Company, or merge with and into the Company and the Company
shall be the continuing or surviving corporation of such consolidation or
merger; or

                 (iii) the Company shall sell or otherwise transfer (or one or
more of its Subsidiaries shall sell or otherwise transfer), in one or more
transactions, assets or earning power aggregating 50% or more of the assets or
earning power of the Company and its Subsidiaries (taken as a whole) to any
other Person or Persons (other than the Company or one or more of its wholly
owned Subsidiaries in one or more transactions, each of which complies with
Section 11(o) of this Agreement),

                       then, and in each such case, proper provision shall be
made so that

                       (A) each holder of a Right (except as otherwise provided
herein) shall thereafter have the right to receive, upon the exercise thereof in
accordance with the terms of this Agreement, such number of validly authorized
and issued, fully paid and nonassessable Common Shares of the Principal Party
(as hereinafter defined), free of any liens, encumbrances, rights of first
refusal or other adverse claims, as shall be equal to the result obtained by (1)
multiplying the then current Purchase Price by the number of one-thousandths of
a Preferred Share for which a Right was exercisable immediately prior to the
first occurrence of a Section 13 Event (or, if a Triggering Event has occurred
prior to the first occurrence of a Section 13 Event, multiplying the number of
such one-thousandths of a Preferred Share for which a Right was exercisable
immediately prior to the first occurrence of a Triggering Event by 

                                      -21-
<PAGE>
 
the Purchase Price in effect immediately prior to such first occurrence) and (2)
dividing that product (which, following the first occurrence of a Section 13
Event, shall be referred to as the "TOTAL EXERCISE PRICE" for each Right and for
all purposes of this Agreement) by 50% of the current per share market price
(determined pursuant to Section 11(d) of this Agreement) of the Common Shares of
such Principal Party on the date of consummation of such Section 13 Event;

          (B) such Principal Party shall thereafter be liable for, and shall
assume, by virtue of such Section 13 Event, all the obligations and duties of
the Company pursuant to this Agreement;

          (C) the term "Company" shall thereafter be deemed to refer to such
Principal Party, it being specifically intended that the provisions of Section
11 of this Agreement shall apply only to such Principal Party following the
first occurrence of a Section 13 Event;

          (D) such Principal Party shall take such steps (including, but not
limited to, the reservation of a sufficient number of its Common Shares) in
connection with the consummation of any such transaction as may be necessary to
assure that the provisions of this Agreement shall thereafter be applicable, as
nearly as reasonably may be, in relation to its Common Shares thereafter
deliverable upon the exercise of the Rights.

     (b) "PRINCIPAL PARTY" shall mean, in the case of any transaction described
in clause (i), (ii) or (iii) of Section 13(a), the Person referred to therein or
such Person's successor, including, if applicable, the Company, if it is the
surviving corporation), provided, however, that in any such case, (i) if such
                        --------  -------                               
Person is a direct or indirect Subsidiary of another Person, "Principal Party"
shall refer to such other Person and (ii) in case such Person is a Subsidiary,
directly or indirectly, of more than one Person, "Principal Party" shall refer
to whichever of such Persons is the issuer of the Common Shares having the
greatest aggregate value, and provided, further, that for purposes of
                              --------  -------                      
transactions described in clause (iii) of this Section 13(b), "Principal Party"
shall refer to that Person receiving the greatest portion of the assets or
earning power transferred pursuant to such transaction or transactions.

     (c) If, for any reason, the Rights cannot be exercised for Common Shares of
such Principal Party as provided in Section 13(a), then each holder of Rights
shall have the right to exchange its Rights for cash from such Principal Party
in an amount equal to the number of Common Shares that it would otherwise be
entitled to purchase times 50% of the current per share market price, as
determined pursuant to Section 11(d) of this Agreement, of such Common Shares of
such Principal Party. If, for any reason, the foregoing formulation cannot be
applied to determine the cash amount into which the Rights are exchangeable,
then the Board of Directors, based upon the advice of one or more nationally
recognized investment banking firms, and based upon the total value of the
Company, shall determine such amount reasonably and with good faith to the
holders of Rights. Any such determination shall be final and binding on the
Rights Agent.

     (d) Notwithstanding anything in this Agreement to the contrary, Section 13
shall not be applicable to a transaction described in clauses (i) and (ii) of
Section 13(a) if: (i)

                                      -22-
<PAGE>
 
such transaction is consummated with a Person or Persons who acquired Common
Shares pursuant to a Permitted Offer (or a wholly-owned Subsidiary of any such
Person or Persons); (ii) the price per share of Common Shares offered in such
transaction is not less than the price per share of Common Shares paid to all
holders of Common Shares whose shares were purchased pursuant to such Permitted
Offer; and (iii) the form of consideration being offered to the remaining
holders of Common Shares pursuant to such transaction is the same form as the
form of consideration paid pursuant to such Permitted Offer. Upon consummation
of any such transaction contemplated by this Section 13(d), all Rights hereunder
shall expire.

          (e) The Company shall not consummate any Section 13 Event unless the
Principal Party shall have a sufficient number of authorized Common Shares that
have not been issued or reserved for issuance to permit the exercise in full of
the Rights in accordance with this Section 13 and unless prior thereto the
Company and such issuer shall have executed and delivered to the Rights Agent a
supplemental agreement confirming that such Principal Party shall, upon
consummation of such Section 13 Event, assume this Agreement in accordance with
Sections 13(a) and (b) of this Agreement, that all rights of first refusal or
preemptive rights in respect of the issuance of Common Shares of such Principal
Party upon exercise of outstanding Rights have been waived, that there are no
rights, warrants, instruments or securities outstanding or any agreements or
arrangements which, as a result of the consummation of such transaction, would
eliminate or substantially diminish the benefits intended to be afforded by the
Rights and that such transaction shall not result in a default by such Principal
Party under this Agreement, and further providing that, as soon as practicable
after the date of such Section 13 Event, such Principal Party will:

              (i)   prepare and file a registration statement under the
Securities Act with respect to the Rights and the securities purchasable upon
exercise of the Rights on an appropriate form, use its best efforts to cause
such registration statement to become effective as soon as practicable after
such filing and use its best efforts to cause such registration statement to
remain effective (with a prospectus at all times meeting the requirements of the
Securities Act) until the Expiration Date, and similarly comply with applicable
state securities laws;

              (ii)  use its best efforts to list (or continue the listing of)
the Rights and the securities purchasable upon exercise of the Rights on a
national securities exchange or to meet the eligibility requirements for
quotation on Nasdaq; and

              (iii) deliver to holders of the Rights historical financial
statements for such Principal Party which comply in all respects with the
requirements for registration on Form 10 (or any successor form) under the
Exchange Act.

          In the event that at any time after the occurrence of a Triggering
Event some or all of the Rights shall not have been exercised at the time of a
transaction described in this Section 13, the Rights which have not theretofore
been exercised shall thereafter be exercisable in the manner described in
Section 13(a) (without taking into account any prior adjustment required by
Section 11(a)(ii)).

                                      -23-
<PAGE>
 
             (f) The provisions of this Section 13 shall similarly apply to
successive mergers or consolidations or sales or other transfers.

     Section 14. Fractional Rights and Fractional Shares.
                 ---------------------------------------   

             (a) The Company shall not be required to issue fractions of Rights
or to distribute Rights Certificates that evidence fractional Rights. In lieu of
such fractional Rights, there shall be paid to the registered holders of the
Rights Certificates with regard to which such fractional Rights would otherwise
be issuable, an amount in cash equal to the same fraction of the current market
value of a whole Right. For the purposes of this Section 14(a), the current
market value of a whole Right shall be the closing price of the Rights for the
Trading Day immediately prior to the date on which such fractional Rights would
have been otherwise issuable, as determined pursuant to the second sentence of
Section 11(d) of this Agreement.

             (b) The Company shall not be required to issue fractions of
Preferred Shares (other than fractions that are integral multiples of one one-
thousandth of a Preferred Share) upon exercise of the Rights or to distribute
certificates which evidence fractional Preferred Shares (other than fractions
that are integral multiples of one one-thousandth of a Preferred Share). In lieu
of fractional Preferred Shares that are not integral multiples of one one-
thousandth of a Preferred Share, the Company shall pay to the registered holders
of Rights Certificates at the time such Rights are exercised as herein provided
an amount in cash equal to the same fraction of the current market value of a
Common Share. For purposes of this Section 14(b), the current market value of a
Common Share shall be the closing price of a Common Share (as determined
pursuant to the second sentence of Section 11(d) of this Agreement) for the
Trading Day immediately prior to the date of such exercise.

             (c) The holder of a Right by the acceptance of the Right expressly
waives his or her right to receive any fractional Rights or any fractional
shares upon exercise of a Right.

     Section 15. Rights of Action. All rights of action in respect of this
                 ----------------
Agreement, excepting the rights of action given to the Rights Agent under
Section 18 of this Agreement, are vested in the respective registered holders of
the Rights Certificates (and, prior to the Distribution Date, the registered
holders of the Common Shares); and any registered holder of any Rights
Certificate (or, prior to the Distribution Date, of the Common Shares), without
the consent of the Rights Agent or of the holder of any other Rights Certificate
(or, prior to the Distribution Date, of the Common Shares), may, in his or her
own behalf and for his or her own benefit, enforce, and may institute and
maintain any suit, action or proceeding against the Company to enforce, or
otherwise act in respect of, his or her right to exercise the Rights evidenced
by such Rights Certificate in the manner provided in such Rights Certificate and
in this Agreement. Without limiting the foregoing or any remedies available to
the holders of Rights, it is specifically acknowledged that the holders of
Rights would not have an adequate remedy at law for any breach of this Agreement
and will be entitled to specific performance of the obligations under, and
injunctive relief against actual or threatened violations of, the obligations of
any Person subject to this Agreement.

                                      -24-
<PAGE>
 
     Section 16. Agreement of Rights Holders. Every holder of a Right, by
                 ---------------------------
accepting the same, consents and agrees with the Company and the Rights Agent
and with every other holder of a Right that:

                 (a) prior to the Distribution Date, the Rights will be
transferable only in connection with the transfer of the Common Shares;

                 (b) after the Distribution Date, the Rights Certificates are
transferable only on the registry books of the Rights Agent if surrendered at
the office or offices of the Rights Agent designated for such purposes, duly
endorsed or accompanied by a proper instrument of transfer and with the
appropriate forms and certificates fully executed; and

                 (c) subject to Sections 6(a) and 7(f) of this Agreement, the
Company and the Rights Agent may deem and treat the person in whose name the
Rights Certificate (or, prior to the Distribution Date, the associated Common
Shares certificate) is registered as the absolute owner thereof and of the
Rights evidenced thereby (notwithstanding any notations of ownership or writing
on the Rights Certificates or the associated Common Shares certificate made by
anyone other than the Company or the Rights Agent) for all purposes whatsoever,
and neither the Company nor the Rights Agent shall be affected by any notice to
the contrary.

     Section 17. Rights Certificate Holder Not Deemed a Stockholder. No holder,
                 --------------------------------------------------
as such, of any Rights Certificate shall be entitled to vote, receive dividends
or be deemed for any purpose the holder of the Preferred Shares or any other
securities of the Company which may at any time be issuable on the exercise of
the Rights represented thereby, nor shall anything contained herein or in any
Rights Certificate be construed to confer upon the holder of any Rights
Certificate, as such, any of the rights of a stockholder of the Company or any
right to vote for the election of directors or upon any matter submitted to
stockholders at any meeting thereof, or to give or withhold consent to any
corporate action, or to receive notice of meetings or other actions affecting
stockholders (except as provided in Section 25 of this Agreement), or to receive
dividends or subscription rights, or otherwise, until the Right or Rights
evidenced by such Rights Certificate shall have been exercised in accordance
with the provisions of this Agreement.

     Section 18. Concerning the Rights Agent.
                 ---------------------------

                 (a) The Company agrees to pay to the Rights Agent reasonable
compensation for all services rendered by it hereunder and, from time to time,
on demand of the Rights Agent, its reasonable expenses and counsel fees and
other disbursements incurred in the administration and execution of this
Agreement and the exercise and performance of its duties hereunder.  The Company
also agrees to indemnify the Rights Agent for, and to hold it harmless against,
any loss, liability or expense, incurred without negligence, bad faith or
willful misconduct on the part of the Rights Agent, for anything done or omitted
by the Rights Agent in connection with the acceptance and administration of this
Agreement, including the costs and expenses of defending against any claim of
liability in the premises.

                 (b) The Rights Agent shall be protected and shall incur no
liability for, or in respect of any action taken, suffered or omitted by it in
connection with, its administration of this 

                                      -25-
<PAGE>
 
Agreement in reliance upon any Rights Certificate or certificate for the Common
Shares or for other securities of the Company, instrument of assignment or
transfer, power of attorney, endorsement, affidavit, letter, notice, direction,
consent, certificate, statement or other paper or document believed by it to be
genuine and to be signed, executed and, where necessary, verified or
acknowledged, by the proper Person or Persons, or otherwise upon the advice of
counsel as set forth in Section 20 of this Agreement.

     Section 19. Merger or Consolidation or Change of Name of Rights Agent.
                 ---------------------------------------------------------   

             (a) Any corporation into which the Rights Agent or any successor
Rights Agent may be merged or with which it may be consolidated, or any
corporation resulting from any merger or consolidation to which the Rights Agent
or any successor Rights Agent shall be a party, or any corporation succeeding to
the shareholder services business of the Rights Agent or any successor Rights
Agent, shall be the successor to the Rights Agent under this Agreement without
the execution or filing of any paper or any further act on the part of any of
the parties to this Agreement; provided, however, that such corporation would be
                               --------  -------                                
eligible for appointment as a successor Rights Agent under the provisions of
Section 21 of this Agreement.  In case at the time such successor Rights Agent
shall succeed to the agency created by this Agreement, any of the Rights
Certificates shall have been countersigned but not delivered, any such successor
Rights Agent may adopt the countersignature of the predecessor Rights Agent and
deliver such Rights Certificates so countersigned; and in case at that time any
of the Rights Certificates shall not have been countersigned, any successor
Rights Agent may countersign such Rights Certificates either in the name of the
predecessor Rights Agent or in the name of the successor Rights Agent; and in
all such cases such Rights Certificates shall have the full force provided in
the Rights Certificates and in this Agreement.

             (b) In case at any time the name of the Rights Agent shall be
changed and at such time any of the Rights Certificates shall have been
countersigned but not delivered, the Rights Agent may adopt the countersignature
under its prior name and deliver Rights Certificates so countersigned; and in
case at that time any of the Rights Certificates shall not have been
countersigned, the Rights Agent may countersign such Rights Certificates either
in its prior name or in its changed name; and in all such cases such Rights
Certificates shall have the full force provided in the Rights Certificates and
in this Agreement.

     Section 20.  Duties of Rights Agent.  The Rights Agent undertakes the 
                  ----------------------                                    
duties and obligations imposed by this Agreement upon the following terms and
conditions, by all of which the Company and the holders of Rights Certificates,
by their acceptance thereof, shall be bound:

             (a) The Rights Agent may consult with legal counsel (who may be
legal counsel for the Company), and the opinion or advice of such counsel shall
be full and complete authorization and protection to the Rights Agent as to any
action taken or omitted by it in good faith and in accordance with such opinion
or advice.

             (b) Whenever in the performance of its duties under this Agreement
the Rights Agent shall deem it necessary or desirable that any fact or matter
(including, without limitation, the identity of any Acquiring Person and the
determination of "current per share 

                                      -26-
<PAGE>
 
market price") be proved or established by the Company prior to taking or
suffering any action hereunder, such fact or matter (unless other evidence in
respect thereof be herein specifically prescribed) may be deemed to be
conclusively proved and established by a certificate signed by any one of the
Chairman of the Board, the Chief Executive Officer, the President, any Vice
President, the Chief Financial Officer, the Secretary or any Assistant Secretary
of the Company and delivered to the Rights Agent; and such certificate shall be
full authorization to the Rights Agent for any action taken or suffered in good
faith by it under the provisions of this Agreement in reliance upon such
certificate.

          (c) The Rights Agent shall be liable hereunder to the Company and any
other Person only for its own negligence, bad faith or willful misconduct.

          (d) The Rights Agent shall not be liable for or by reason of any of
the statements of fact or recitals contained in this Agreement or in the Rights
Certificates (except its countersignature thereof) or be required to verify the
same, but all such statements and recitals are and shall be deemed to have been
made by the Company only.

          (e) The Rights Agent shall not be under any responsibility in respect
of the validity of this Agreement or the execution and delivery of this
Agreement (except the due execution of this Agreement by the Rights Agent) or in
respect of the validity or execution of any Rights Certificate (except its
countersignature thereof); nor shall it be responsible for any breach by the
Company of any covenant or condition contained in this Agreement or in any
Rights Certificate; nor shall it be responsible for any change in the
exercisability of the Rights or any adjustment in the terms of the Rights
(including the manner, method or amount thereof) provided for in Sections 3, 11,
13, 23 or 24, or the ascertaining of the existence of facts that would require
any such change or adjustment (except with respect to the exercise of Rights
evidenced by Rights Certificates after receipt by the Rights Agent of a
certificate furnished pursuant to Section 12 describing such change or
adjustment); nor shall it by any act hereunder be deemed to make any
representation or warranty as to the authorization or reservation of any
Preferred Shares to be issued pursuant to this Agreement or any Rights
Certificate or as to whether any Preferred Shares will, when issued, be validly
authorized and issued, fully paid and nonassessable.

          (f) The Company agrees that it will perform, execute, acknowledge and
deliver or cause to be performed, executed, acknowledged and delivered all such
further and other acts, instruments and assurances as may reasonably be required
by the Rights Agent for the carrying out or performing by the Rights Agent of
the provisions of this Agreement.

          (g) The Rights Agent is hereby authorized and directed to accept
instructions with respect to the performance of its duties hereunder from any
one of the Chairman of the Board, the Chief Executive Officer, the President,
any Vice President, the Chief Financial Officer, the Secretary or any Assistant
Secretary of the Company, and to apply to such officers for advice or
instructions in connection with its duties, and it shall not be liable for any
action taken or suffered by it in good faith in accordance with instructions of
any such officer or for any delay in acting while waiting for those
instructions.  Any application by the Rights Agent for written instructions from
the Company may, at the option of the Rights Agent, set forth in 

                                      -27-
<PAGE>
 
writing any action proposed to be taken or omitted by the Rights Agent under
this Rights Agreement and the date on and/or after which such action shall be
taken or such omission shall be effective. The Rights Agent shall not be liable
for any action taken by, or omission of, the Rights Agent in accordance with a
proposal included in any such application on or after the date specified in such
application (which date shall not be less than five (5) Business Days after the
date any officer of the Company actually receives such application, unless any
such officer shall have consented in writing to an earlier date) unless, prior
to taking any such action (or the effective date in the case of an omission),
the Rights Agent shall have received written instructions in response to such
application specifying the action to be taken or omitted.

          (h) The Rights Agent and any stockholder, director, officer or
employee of the Rights Agent may buy, sell or deal in any of the Rights or other
securities of the Company or become pecuniarily interested in any transaction in
which the Company may be interested, or contract with or lend money to the
Company or otherwise act as fully and freely as though it were not Rights Agent
under this Agreement.  Nothing herein shall preclude the Rights Agent from
acting in any other capacity for the Company or for any other legal entity.

          (i) The Rights Agent may execute and exercise any of the rights or
powers hereby vested in it or perform any duty hereunder either itself or by or
through its attorneys or agents, and the Rights Agent shall not be answerable or
accountable for any act, default, neglect or misconduct of any such attorneys or
agents or for any loss to the Company resulting from any such act, default,
neglect or misconduct, provided reasonable care was exercised in the selection
and continued employment thereof.

          (j) No provision of this Agreement shall require the Rights Agent to
expend or risk its own funds or otherwise incur any financial liability in the
performance of any of its duties hereunder or in the exercise of its rights if
there shall be reasonable grounds for believing that repayment of such funds or
adequate indemnification against such risk or liability is not reasonably
assured to it.

          (k) If, with respect to any Rights Certificate surrendered to the
Rights Agent for exercise or transfer, the certificate attached to the form of
assignment or form of election to purchase, as the case may be, has either not
been completed or indicates an affirmative response to clause 1 and/or 2
thereof, the Rights Agent shall not take any further action with respect to such
requested exercise or transfer without first consulting with the Company.

     Section 21.  Change of Rights Agent.  The Rights Agent or any successor
                  ----------------------                                      
Rights Agent may resign and be discharged from its duties under this Agreement
upon thirty (30) days' notice in writing mailed to the Company and to each
transfer agent of the Preferred Shares and the Common Shares by registered or
certified mail, and to the holders of the Rights Certificates by first-class
mail.  The Company may remove the Rights Agent or any successor Rights Agent
upon thirty (30) days' notice in writing, mailed to the Rights Agent or
successor Rights Agent, as the case may be, and to each transfer agent of the
Preferred Shares and the Common Shares by registered or certified mail, and to
the holders of the Rights Certificates by first-class mail.  If the Rights Agent
shall resign or be removed or shall otherwise become incapable of acting, the

                                      -28-
<PAGE>
 
Company shall appoint a successor to the Rights Agent.  If the Company shall
fail to make such appointment within a period of thirty (30) days after giving
notice of such removal or after it has been notified in writing of such
resignation or incapacity by the resigning or incapacitated Rights Agent or by
the holder of a Rights Certificate (who shall, with such notice, submit his or
her Rights Certificate for inspection by the Company), then the registered
holder of any Rights Certificate may apply to any court of competent
jurisdiction for the appointment of a new Rights Agent. Any successor Rights
Agent, whether appointed by the Company or by such a court, shall either (a) be
a corporation organized and doing business under the laws of the United States
or of any state of the United States, in good standing, which is authorized
under such laws to exercise corporate trust or stockholder services powers and
is subject to supervision or examination by federal or state authority and which
has at the time of its appointment as Rights Agent a combined capital and
surplus of at least $50 million or (b) be an affiliate of such a corporation.
After appointment, the successor Rights Agent shall be vested with the same
powers, rights, duties and responsibilities as if it had been originally named
as Rights Agent without further act or deed; but the predecessor Rights Agent
shall deliver and transfer to the successor Rights Agent any property at the
time held by it hereunder, and execute and deliver any further assurance,
conveyance, act or deed necessary for the purpose.  Not later than the effective
date of any such appointment, the Company shall file notice thereof in writing
with the predecessor Rights Agent and each transfer agent of the Preferred
Shares and the Common Shares, and mail a notice thereof in writing to the
registered holders of the Rights Certificates.  Failure to give any notice
provided for in this Section 21, however, or any defect therein, shall not
affect the legality or validity of the resignation or removal of the Rights
Agent or the appointment of the successor Rights Agent, as the case may be.

     Section 22.  Issuance of New Rights Certificates.  Notwithstanding any of
                  -----------------------------------                           
the provisions of this Agreement or of the Rights to the contrary, the Company
may, at its option, issue new Rights Certificates evidencing Rights in such form
as may be approved by its Board of Directors to reflect any adjustment or change
in the Purchase Price and the number or kind or class of shares or other
securities or property purchasable under the Rights Certificates made in
accordance with the provisions of this Agreement.  In addition, in connection
with the issuance or sale of Common Shares following the Distribution Date and
prior to the redemption or expiration of the Rights, the Company (a) shall, with
respect to Common Shares so issued or sold pursuant to the exercise of stock
options or under any employee plan or arrangement or upon the exercise,
conversion or exchange of any convertible subordinated debentures of the Company
outstanding at the date hereof or upon the exercise, conversion or exchange of
securities hereinafter issued by the Company and (b) may, in any other case, if
deemed necessary or appropriate by the Board of Directors, issue Rights
Certificates representing the appropriate number of Rights in connection with
such issuance or sale; provided, however, that (i) no such Rights Certificate
                       --------  -------                                     
shall be issued and this sentence shall be null and void ab initio if, and to
the extent that, such issuance or this sentence would create a significant risk
of or result in material adverse tax consequences to the Company or the Person
to whom such Rights Certificate would be issued or would create a significant
risk of or result in such options' or employee plans' or arrangements'  failing
to qualify for otherwise available special tax treatment and (ii) no such Rights
Certificate shall be issued if, and to the extent that, appropriate adjustment
shall otherwise have been made in lieu of the issuance thereof.

                                      -29-
<PAGE>
 
     Section 23. Redemption.
                 ----------   

             (a) The Company may, at its option and with the approval of the
Board of Directors, at any time prior to the Close of Business on the earlier of
(i) the tenth day following the Shares Acquisition Date or such later date as
may be determined by action of a majority of the Board of Directors and publicly
announced by the Company or (ii) the Final Expiration Date, redeem all but not
less than all the then outstanding Rights at a redemption price of $.01 per
Right, appropriately adjusted to reflect any stock split, stock dividend or
similar transaction occurring after the date of this Agreement (such redemption
price being herein referred to as the "Redemption Price") and the Company may,
at its option, pay the Redemption Price either in Common Shares (based on the
current per share market price thereof (as determined pursuant to Section 11(d)
of this Agreement) at the time of redemption) or cash. Such redemption by the
Company may be made effective at such time, on such basis and with such
conditions as the Board of Directors in its sole discretion may establish.

          (b) Immediately upon the action of the Board of Directors ordering the
redemption of the Rights, evidence of which shall have been filed with the
Rights Agent, and without any further action and without any notice, the right
to exercise the Rights will terminate and the only right thereafter of the
holders of Rights shall be to receive the Redemption Price.  Within ten (10)
days after the action of the Board of Directors ordering the redemption of the
Rights, the Company shall give notice of such redemption to the Rights Agent and
the holders of the then outstanding Rights by mailing such notice to all such
holders at their last addresses as they appear upon the registry books of the
Rights Agent or, prior to the Distribution Date, on the registry books of the
transfer agent for the Common Shares.  Any notice which is mailed in the manner
herein provided shall be deemed given, whether or not the holder receives the
notice.  Each such notice of redemption will state the method by which the
payment of the Redemption Price will be made.  Neither the Company nor any of
its Affiliates or Associates may redeem, acquire or purchase for value any
Rights at any time in any manner other than that specifically set forth in this
Section 23 or in Section 24 of this Agreement, and other than in connection with
the purchase of Common Shares prior to the Distribution Date.

                                      -30-
<PAGE>
 
     Section 24. Exchange.
                 --------   

             (a) Subject to applicable laws, rules and regulations, and subject
to subsection (c) below, the Company may, at its option, by majority vote of the
Board of Directors, at any time after the occurrence of a Triggering Event,
exchange all or part of the then outstanding and exercisable Rights (which shall
not include Rights that have become void pursuant to the provisions of Section
7(e) of this Agreement) for Common Shares at an exchange ratio of one Common
Share per Right, appropriately adjusted to reflect any stock split, stock
dividend or similar transaction occurring after the date of this Agreement (such
exchange ratio being hereinafter referred to as the "RATIO OF EXCHANGE").
Notwithstanding the foregoing, the Board of Directors shall not be empowered to
effect such exchange at any time after any Person (other than the Company, any
Subsidiary of the Company, any employee benefit plan of the Company or any such
Subsidiary, or any entity holding Common Shares for or pursuant to the terms of
any such plan), together with all Affiliates and Associates of such Person,
becomes the Beneficial Owner of 50% or more of the Common Shares then
outstanding.

             (b) Immediately upon the action of the Board of Directors ordering
the exchange of any Rights pursuant to subsection (a) of this Section 24 and
without any further action and without any notice, the right to exercise such
Rights shall terminate and the only right thereafter of a holder of such Rights
shall be to receive that number of Common Shares equal to the number of such
Rights held by such holder multiplied by the Ratio of Exchange. The Company
shall give public notice of any such exchange; provided, however, that the
                                               --------  -------
failure to give, or any defect in, such notice shall not affect the validity of
such exchange. The Company shall mail a notice of any such exchange to all of
the holders of such Rights at their last addresses as they appear upon the
registry books of the Rights Agent. Any notice which is mailed in the manner
herein provided shall be deemed given, whether or not the holder receives the
notice. Each such notice of exchange will state the method by which the exchange
of the Common Shares for Rights will be effected and, in the event of any
partial exchange, the number of Rights which will be exchanged. Any partial
exchange shall be effected pro rata based on the number of Rights (other than
Rights which have become void pursuant to the provisions of Section 7(e) of this
Agreement) held by each holder of Rights.

             (c) In the event that there shall not be sufficient Common Shares
issued but not outstanding or authorized but unissued to permit any exchange of
Rights as contemplated in accordance with Section 24(a), the Company shall
either take such action as may be necessary to authorize additional Common
Shares for issuance upon exchange of the Rights or alternatively, at the option
of a majority of the Board of Directors, with respect to each Right (i) pay cash
in an amount equal to the Current Value (as hereinafter defined), in lieu of
issuing Common Shares in exchange therefor, or (ii) issue debt or equity
securities or a combination thereof, having a value equal to the Current Value,
in lieu of issuing common Shares in exchange for each such Right, where the
value of such securities shall be determined by a nationally recognized
investment banking firm selected by the Board of Directors by majority vote of
the Board of Directors, or (iii) deliver any combination of cash, property,
Common Shares and/or other securities having a value equal to the Current Value
in exchange for each Right.  For purposes of this Section 24(c) only, the
Current Value shall mean the product of the current per share market price of
Common 

                                      -31-
<PAGE>
 
Shares (determined pursuant to Section 11(d) on the date of the occurrence of
the event described above in subparagraph (a)) multiplied by the number of
Common Shares for which the Right otherwise would be exchangeable if there were
sufficient shares available. To the extent that the Company determines that some
action need be taken pursuant to clauses (i), (ii) or (iii) of this Section
24(c), the Board of Directors may temporarily suspend the exercisability of the
Rights for a period of up to sixty (60) days following the date on which the
event described in Section 24(a) shall have occurred, in order to seek any
authorization of additional Common Shares and/or to decide the appropriate form
of distribution to be made pursuant to the above provision and to determine the
value thereof. In the event of any such suspension, the Company shall issue a
public announcement stating that the exercisability of the Rights has been
temporarily suspended.

                 (d) The Company shall not be required to issue fractions of
Common Shares or to distribute certificates that evidence fractional Common
Shares. In lieu of such fractional Common Shares, there shall be paid to the
registered holders of the Rights Certificates with regard to which such
fractional Common Shares would otherwise be issuable, an amount in cash equal to
the same fraction of the current per share market value of a whole Common Share
(as determined pursuant to the second sentence of Section 11(d) of this
Agreement).

                 (e) The Company may, at its option, by majority vote of the
Board of Directors, at any time before any Person has become an Acquiring
Person, exchange all or part of the then outstanding Rights for rights of
substantially equivalent value, as determined reasonably and with good faith by
the Board of Directors, based upon the advice of one or more nationally
recognized investment banking firms.

                 (f) Immediately upon the action of the Board of Directors
ordering the exchange of any Rights pursuant to subsection (e) of this Section
24 and without any further action and without any notice, the right to exercise
such Rights shall terminate and the only right thereafter of a holder of such
Rights shall be to receive that number of rights in exchange therefor as has
been determined by the Board of Directors in accordance with subsection (e)
above. The Company shall give public notice of any such exchange; provided,
                                                                  ---------
however, that the failure to give, or any defect in, such notice shall not
- --------  
affect the validity of such exchange. The Company shall mail a notice of any
such exchange to all of the holders of such Rights at their last addresses as
they appear upon the registry books of the transfer agent for the Common Shares
of the Company. Any notice which is mailed in the manner herein provided shall
be deemed given, whether or not the holder receives the notice. Each such notice
of exchange will state the method by which the exchange of the Rights will be
effected.

     Section 25. Notice of Certain Events.
                 ------------------------ 

                 (a) In case the Company shall propose to effect or permit to
occur any Section 13 Event, the Company shall give notice thereof to each holder
of Rights in accordance with Section 26 of this Agreement at least twenty (20)
days prior to occurrence of such Section 13 Event.

                                      -32-
<PAGE>
 
             (b) In case any Triggering Event or Section 13 Event shall occur,
then, in any such case, the Company shall as soon as practicable thereafter give
to each holder of a Rights Certificate, in accordance with Section 26 of this
Agreement, a notice of the occurrence of such event, which shall specify the
event and the consequences of the event to holders of Rights under Sections
11(a)(ii) and 13 of this Agreement.

     Section 26.  Notices.  Notices or demands authorized by this Agreement to
                  -------                                                       
be given or made by the Rights Agent or by the holder of any Rights Certificate
to or on the Company shall be sufficiently given or made if sent by first-class
mail, postage prepaid, addressed (until another address is filed in writing with
the Rights Agent) as follows:

                              Preview Travel, Inc.
                                747 Front Street
                            San Francisco, CA 94111
                              Attention: President

Subject to the provisions of Section 21 hereof, any notice or demand authorized
by this Agreement to be given or made by the Company or by the holder of any
Rights Certificate to or on the Rights Agent shall be sufficiently given or made
if sent by first-class mail, postage prepaid addressed (until another address is
filed in writing with the Company) as follows:

                        U.S. Stock Transfer Corporation
                              1745 Gardena Avenue
                              Glendale, CA  91204
                                Attn:  Mark Cano

Notices or demands authorized by this Agreement to be given or made by the
Company or the Rights Agent to or on the holder of any Rights Certificate shall
be sufficiently given or made if sent by first-class mail, postage prepaid,
addressed to such holder at the address of such holder as shown on the registry
books of the Company.

                                      -33-
<PAGE>
 
     Section 27.  Supplements and Amendments.  Prior to the Distribution Date,
                  --------------------------                                    
the Company may supplement or amend this Agreement in any respect without the
approval of any holders of Rights and the Rights Agent shall, if the Company so
directs, execute such supplement or amendment.  From and after the Distribution
Date, the Company and the Rights Agent may from time to time supplement or amend
this Agreement without the approval of any holders of Rights in order to (i)
cure any ambiguity, (ii) correct or supplement any provision contained herein
which may be defective or inconsistent with any other provisions herein, (iii)
shorten or lengthen any time period hereunder or (iv) change or supplement the
provisions hereunder in any manner that the Company may deem necessary or
desirable and that shall not adversely affect the interests of the holders of
Rights (other than an Acquiring Person or an Affiliate or Associate of an
Acquiring Person); provided, this Agreement may not be supplemented or amended
                   --------                                                   
to lengthen, pursuant to clause (iii) of this sentence, (A) a time period
relating to when the Rights may be redeemed at such time as the Rights are not
then redeemable or (B) any other time period unless such lengthening is for the
purpose of protecting, enhancing or clarifying the rights of, and/or the
benefits to, the holders of Rights.  Upon the delivery of a certificate from an
appropriate officer of the Company that states that the proposed supplement or
amendment is in compliance with the terms of this Section 27, the Rights Agent
shall execute such supplement or amendment.  Prior to the Distribution Date, the
interests of the holders of Rights shall be deemed coincident with the interests
of the holders of Common Shares.

     Section 28.  Successors.  All the covenants and provisions of this
                  ----------                                             
Agreement by or for the benefit of the Company or the Rights Agent shall bind
and inure to the benefit of their respective successors and assigns hereunder.

     Section 29.  Determinations and Actions by the Board of Directors, etc.
                  ---------------------------------------------------------     
For all purposes of this Agreement, any calculation of the number of Common
Shares outstanding at any particular time, including for purposes of determining
the particular percentage of such outstanding Common Shares of which any Person
is the Beneficial Owner, shall be made in accordance with the last sentence of
Rule 13d-3(d)(1)(i) of the General Rules and Regulations under the Exchange Act.
The Board of Directors shall have the exclusive power and authority to
administer this Agreement and to exercise all rights and powers specifically
granted to the Board of Directors, or the Company, or as may be necessary or
advisable in the administration of this Agreement, including, without
limitation, the right and power to (i) interpret the provisions of this
Agreement and (ii) make all determinations deemed necessary or advisable for the
administration of this Agreement (including a determination to redeem or not
redeem the Rights or to amend the Agreement).  All such actions, calculations,
interpretations and determinations (including, for purposes of clause (y) below,
all omissions with respect to the foregoing) which are done or made by the Board
of Directors in good faith, shall (x) be final, conclusive and binding on the
Company, the Rights Agent, the holders of the Rights Certificates and all other
parties and (y) not subject the Board of Directors to any liability to the
holders of the Rights.

     Section 30.  Benefits of this Agreement.
                  --------------------------   

     Nothing in this Agreement shall be construed to give to any Person other
than the Company, the Rights Agent and the registered holders of the Rights
Certificates (and, prior to the 

                                      -34-
<PAGE>
 
Distribution Date, the Common Shares) any legal or equitable right, remedy or
claim under this Agreement; but this Agreement shall be for the sole and
exclusive benefit of the Company, the Rights Agent and the registered holders of
the Rights Certificates (and, prior to the Distribution Date, the Common
Shares).

     Section 31.  Severability.  If any term, provision, covenant or
                  ------------                                        
restriction of this Agreement is held by a court of competent jurisdiction or
other authority to be invalid, void or unenforceable, the remainder of the
terms, provisions, covenants and restrictions of this Agreement shall remain in
full force and effect and shall in no way be affected, impaired or invalidated;
provided, however, that notwithstanding anything in this Agreement to the
- --------  -------                                                        
contrary, if any such term, provision, covenant or restriction is held by such
court or authority to be invalid, void or unenforceable and the Board of
Directors determines in its good faith judgment that severing the invalid
language from this Agreement would adversely affect the purpose or effect of
this Agreement, the right of redemption set forth in Section 23 of this
Agreement shall be reinstated and shall not expire until the close of business
on the tenth day following the date of such determination by the Board of
Directors.

     Section 32.  Governing Law.  This Agreement and each Right and each Rights
                  -------------                                           
Certificate issued hereunder shall be deemed to be a contract made under the
laws of the State of Delaware and for all purposes shall be governed by and
construed in accordance with the laws of such State applicable to contracts to
be made and performed entirely within such State.

     Section 33.  Counterparts.  This Agreement may be executed in any number
                  ------------                                                 
of counterparts and each of such counterparts shall for all purposes be deemed
to be an original, and all such counterparts shall together constitute but one
and the same instrument.

     Section 34.  Descriptive Headings.  Descriptive headings of the several
                  --------------------                                        
Sections of this Agreement are inserted for convenience only and shall not
control or affect the meaning or construction of any of the provisions of this
Agreement.

                                      -35-
<PAGE>
 
     IN WITNESS WHEREOF, the parties hereto have caused this Preferred Shares
Rights Agreement to be duly executed as of the day and year first above written.

                              PREVIEW TRAVEL, INC.
                              --------------------


                              By: /s/ Kenneth Pelowski
                                  ----------------------------------
                              Name:  Kenneth Pelowski
                              Title: Executive Vice President and
                                     Chief Financial Officer


                              U.S. STOCK TRANSFER CORPORATION


                              By: /s/ Mark Cano
                                  ----------------------------------
                              Name:   Mark Cano
                              Title:  Assistant Vice President 

                                      -36-
<PAGE>
 
                                   EXHIBIT A

               CERTIFICATE OF DESIGNATION OF RIGHTS, PREFERENCES

                               AND PRIVILEGES OF

                    SERIES A PARTICIPATING PREFERRED STOCK

                                      OF

                             PREVIEW TRAVEL, INC.


Pursuant to Section 151 of the General Corporation Law of the State of Delaware

     I, Kenneth Pelowski, the Executive Vice President and Chief Financial
Officer of Preview Travel, Inc., a corporation organized and existing under the
General Corporation Law of the State of Delaware, in accordance with the
provisions of Section 103 thereof, DO HEREBY CERTIFY:

     That pursuant to the authority conferred upon the Board of Directors by the
Certificate of Incorporation of the said Corporation, the said Board of
Directors on October 28, 1998 adopted the following resolution creating a series
of shares of Preferred Stock designated as Series A Participating Preferred
Stock:

     "RESOLVED, that pursuant to the authority vested in the Board of Directors
of the corporation by the Certificate of Incorporation, the Board of Directors
does hereby provide for the issue of a Series of Preferred Stock, $0.001 par
value, of the Corporation, to be designated "Series A Participating Preferred
Stock", initially consisting of one hundred thousand (100,000) shares and to the
extent that the designations, powers, preferences and relative and other special
rights and the qualifications, limitations and restrictions of the Series A
Participating Preferred Stock are not stated and expressed in the Certificate of
Incorporation, does hereby fix and herein state and express such designations,
powers, preferences and relative and other special rights and the
qualifications, limitations and restrictions thereof, as follows (all terms used
herein which are defined in the Certificate of Incorporation shall be deemed to
have the meanings provided therein):

     Section 1.  Designation and Amount.  The shares of such series shall be
                 ----------------------                            
designated as "Series A Participating Preferred Stock", par value $0.001 per
share, and the number of shares constituting such series shall be one hundred
thousand (100,000).

     Section 2.  Dividends and Distributions.
                 --------------------------- 

             (A) Subject to the prior and superior right of the holders of any
shares of any series of Preferred Stock ranking prior and superior to the shares
of Series A Participating Preferred Stock with respect to dividends, the holders
of shares of Series A Participating 

                                      -1-
<PAGE>
 
Preferred Stock shall be entitled to receive when, as and if declared by the
Board of Directors out of funds legally available for the purpose, quarterly
dividends payable in cash on the last day of March, June, September and December
in each year (each such date being referred to herein as a "QUARTERLY DIVIDEND
PAYMENT DATE"), commencing on the first Quarterly Dividend Payment Date after
the first issuance of a share or fraction of a share of Series A Participating
Preferred Stock, in an amount per share (rounded to the nearest cent) equal to,
subject to the provision for adjustment hereinafter set forth, 1,000 times the
aggregate per share amount of all cash dividends, and 1,000 times the aggregate
per share amount (payable in kind) of all non-cash dividends or other
distributions other than a dividend payable in shares of Common Stock or a
subdivision of the outstanding shares of Common Stock (by reclassification or
otherwise), declared on the Common Stock of the Corporation (the "COMMON STOCK")
since the immediately preceding Quarterly Dividend Payment Date, or, with
respect to the first Quarterly Dividend Payment Date, since the first issuance
of any share or fraction of a share of Series A Participating Preferred Stock.
In the event the Corporation shall at any time after October 28, 1998 (the
"RIGHTS DECLARATION DATE") (i) declare any dividend on Common Stock payable in
shares of Common Stock, (ii) subdivide the outstanding Common Stock, or (iii)
combine the outstanding Common Stock into a smaller number of shares, then in
each such case the amount to which holders of shares of Series A Participating
Preferred Stock were entitled immediately prior to such event under the
preceding sentence shall be adjusted by multiplying such amount by a fraction,
the numerator of which is the number of shares of Common Stock outstanding
immediately after such event and the denominator of which is the number of
shares of Common Stock that were outstanding immediately prior to such event.

          (B) The Corporation shall declare a dividend or distribution on the
Series A Participating Preferred Stock as provided in paragraph (A) above
immediately after it declares a dividend or distribution on the Common Stock
(other than a dividend payable in shares of Common Stock).

          (C) Dividends shall begin to accrue and be cumulative on outstanding
shares of Series A Participating Preferred Stock from the Quarterly Dividend
Payment Date next preceding the date of issue of such shares of Series A
Participating Preferred Stock, unless the date of issue of such shares is prior
to the record date for the first Quarterly Dividend Payment Date, in which case
dividends on such shares shall begin to accrue from the date of issue of such
shares, or unless the date of issue is a Quarterly Dividend Payment Date or is a
date after the record date for the determination of holders of shares of Series
A Participating Preferred Stock entitled to receive a quarterly dividend and
before such Quarterly Dividend Payment Date, in either of which events such
dividends shall begin to accrue and be cumulative from such Quarterly Dividend
Payment Date.  Accrued but unpaid dividends shall not bear interest.  Dividends
paid on the shares of Series A Participating Preferred Stock in an amount less
than the total amount of such dividends at the time accrued and payable on such
shares shall be allocated pro rata on a share-by-share basis among all such
shares at the time outstanding.  The Board of Directors may fix a record date
for the determination of holders of shares of Series A Participating Preferred
Stock entitled to receive payment of a dividend or distribution declared
thereon, which record date shall be no more than 30 days prior to the date fixed
for the payment thereof.

                                      -2-
<PAGE>
 
     Section 3.  Voting Rights.  The holders of shares of Series A Participating
                 -------------                                    
Preferred Stock shall have the following voting rights:

             (A) Subject to the provision for adjustment hereinafter set forth,
each share of Series A Participating Preferred Stock shall entitle the holder
thereof to 1,000 votes on all matters submitted to a vote of the stockholders of
the Corporation.  In the event the Corporation shall at any time after the
Rights Declaration Date (i) declare any dividend on Common Stock payable in
shares of Common Stock, (ii) subdivide the outstanding Common Stock, or (iii)
combine the outstanding Common Stock into a smaller number of shares, then in
each such case the number of votes per share to which holders of shares of
Series A Participating Preferred Stock were entitled immediately prior to such
event shall be adjusted by multiplying such number by a fraction, the numerator
of which is the number of shares of Common Stock outstanding immediately after
such event and the denominator of which is the number of shares of Common Stock
that were outstanding immediately prior to such event.

             (B) Except as otherwise provided herein or by law, the holders of
shares of Series A Participating Preferred Stock and the holders of shares of
Common Stock shall vote together as one class on all matters submitted to a vote
of stockholders of the Corporation.

             (C) Except as required by law, holders of Series A Participating
Preferred Stock shall have no special voting rights and their consent shall not
be required (except to the extent they are entitled to vote with holders of
Common Stock as set forth herein) for taking any corporate action.

     Section 4.  Certain Restrictions.
                 -------------------- 

             (A) The Corporation shall not declare any dividend on, make any
distribution on, or redeem or purchase or otherwise acquire for consideration
any shares of Common Stock after the first issuance of a share or fraction of a
share of Series A Participating Preferred Stock unless concurrently therewith it
shall declare a dividend on the Series A Participating Preferred Stock as
required by Section 2 hereof.

             (B) Whenever quarterly dividends or other dividends or
distributions payable on the Series A Participating Preferred Stock as provided
in Section 2 are in arrears, thereafter and until all accrued and unpaid
dividends and distributions, whether or not declared, on shares of Series A
Participating Preferred Stock outstanding shall have been paid in full, the
Corporation shall not:

                 (i)   declare or pay dividends on, make any other distributions
on, or redeem or purchase or otherwise acquire for consideration any shares of
stock ranking junior (either as to dividends or upon liquidation, dissolution or
winding up) to the Series A Participating Preferred Stock;

                 (ii)  declare or pay dividends on, make any other distributions
on any shares of stock ranking on a parity (either as to dividends or upon
liquidation, dissolution or winding up) with Series A Participating Preferred
Stock, except dividends paid ratably on the 

                                      -3-
<PAGE>
 
Series A Participating Preferred Stock and all such parity stock on which
dividends are payable or in arrears in proportion to the total amounts to which
the holders of all such shares are then entitled;

                 (iii) redeem or purchase or otherwise acquire for consideration
shares of any stock ranking on a parity (either as to dividends or upon
liquidation, dissolution or winding up) with the Series A Participating
Preferred Stock, provided that the Corporation may at any time redeem, purchase
or otherwise acquire shares of any such parity stock in exchange for shares of
any stock of the Corporation ranking junior (either as to dividends or upon
dissolution, liquidation or winding up) to the Series A Participating Preferred
Stock;

                 (iv)  purchase or otherwise acquire for consideration any
shares of Series A Participating Preferred Stock, or any shares of stock ranking
on a parity with the Series A Participating Preferred Stock, except in
accordance with a purchase offer made in writing or by publication (as
determined by the Board of Directors) to all holders of such shares upon such
terms as the Board of Directors, after consideration of the respective annual
dividend rates and other relative rights and preferences of the respective
series and classes, shall determine in good faith will result in fair and
equitable treatment among the respective series or classes.

          (C) The Corporation shall not permit any subsidiary of the Corporation
to purchase or otherwise acquire for consideration any shares of stock of the
Corporation unless the Corporation could, under paragraph (A) of this Section 4,
purchase or otherwise acquire such shares at such time and in such manner.

     Section 5.  Reacquired Shares.  Any shares of Series A Participating 
                 -----------------                         
Preferred Stock purchased or otherwise acquired by the Corporation in any manner
whatsoever shall be retired and canceled promptly after the acquisition thereof.
All such shares shall upon their cancellation become authorized but unissued
shares of Preferred Stock and may be reissued as part of a new series of
Preferred Stock to be created by resolution or resolutions of the Board of
Directors, subject to the conditions and restrictions on issuance set forth
herein.

     Section 6.  Liquidation, Dissolution or Winding Up.
                 -------------------------------------- 

             (A) Upon any liquidation (voluntary or otherwise), dissolution or
winding up of the Corporation, no distribution shall be made to the holders of
shares of stock ranking junior (either as to dividends or upon liquidation,
dissolution or winding up) to the Series A Participating Preferred Stock unless,
prior thereto, the holders of shares of Series A Participating Preferred Stock
shall have received an amount equal to accrued and unpaid dividends and
distributions thereon, whether or not declared, to the date of such payment,
plus an amount equal to the greater of (1) $1,000 per share, provided that in
the event the Corporation does not have sufficient assets, after payment of its
liabilities and distribution to holders of Preferred Stock ranking prior to the
Series A Participating Preferred Stock, available to permit payment in full of
the $1,000 per share amount, the amount required to be paid under this Section
6(A)(1) shall, subject to Section 6(B) hereof, equal the value of the amount of
available assets divided by the number of outstanding shares of Series A
Participating Preferred Stock or (2) subject to the provisions for adjustment
hereinafter set forth, 1,000 times the aggregate per share amount to be

                                      -4-
<PAGE>
 
distributed to the holders of Common Stock (the greater of (1) or (2), the
"Series A Liquidation Preference").  In the event the Corporation shall at any
time after the Rights Declaration Date (i) declare any dividend on Common Stock
payable in shares of Common Stock, (ii) subdivide the outstanding Common Stock,
or (iii) combine the outstanding Common Stock into a smaller number of shares,
then in each such case the amount to which holders of shares of Series A
Participating Preferred Stock were entitled immediately prior to such event
under clause (2) of the preceding sentence shall be adjusted by multiplying such
amount by a fraction, the numerator of which is the number of shares of Common
Stock that were outstanding immediately after such event and the denominator of
which is the number of shares of Common Stock that were outstanding immediately
prior to such event.

             (B) In the event, however, that there are not sufficient assets
available to permit payment in full of the Series A Liquidation Preference and
the liquidation preferences of all other series of Preferred Stock, if any,
which rank on a parity with the Series A Participating Preferred Stock, then
such remaining assets shall be distributed ratably to the holders of such parity
shares in proportion to their respective liquidation preferences.

     Section 7.  Consolidation, Merger, etc.  In case the Corporation shall 
                 --------------------------              
enter into any consolidation, merger, combination or other transaction in which
the shares of Common Stock are exchanged for or changed into other stock or
securities, cash and/or any other property, then in any such case the shares of
Series A Participating Preferred Stock shall at the same time be similarly
exchanged or changed in an amount per share (subject to the provision for
adjustment hereinafter set forth) equal to 1,000 times the aggregate amount of
stock, securities, cash and/or any other property (payable in kind), as the case
may be, into which or for which each share of Common Stock is changed or
exchanged. In the event the Corporation shall at any time after the Rights
Declaration Date (i) declare any dividend on Common Stock payable in shares of
Common Stock, (ii) subdivide the outstanding Common Stock, or (iii) combine the
outstanding Common Stock into a smaller number of shares, then in each such case
the amount set forth in the preceding sentence with respect to the exchange or
change of shares of Series A Participating Preferred Stock shall be adjusted by
multiplying such amount by a fraction, the numerator of which is the number of
shares of Common Stock outstanding immediately after such event and the
denominator of which is the number of shares of Common Stock that were
outstanding immediately prior to such event.

     Section 8.  No Redemption.  The shares of Series A Participating Preferred
                 -------------                         
Stock shall not be redeemable.

     Section 9.  Ranking.  The Series A Participating Preferred Stock shall
                 -------                                       
rank junior to all other series of the Corporation's Preferred Stock as to the
payment of dividends and the distribution of assets, unless the terms of any
such series shall provide otherwise.

     Section 10. Amendment.  The Certificate of Incorporation of the
                 ---------                                      
Corporation shall not be further amended in any manner which would materially
alter or change the powers, preference or special rights of the Series A
Participating Preferred Stock so as to affect them adversely 

                                      -5-
<PAGE>
 
without the affirmative vote of the holders of a majority or more of the
outstanding shares of Series A Participating Preferred Stock, voting separately
as a class.

     Section 11. Fractional Shares.  Series A Participating Preferred Stock
                 -----------------                         
may be issued in fractions of a share which shall entitle the holder, in
proportion to such holder's fractional shares, to exercise voting rights,
receive dividends, participate in distributions and to have the benefit of all
other rights of holders of Series A Participating Preferred Stock."

          IN WITNESS WHEREOF, we have executed and subscribed this Certificate
and do affirm the foregoing as true under the penalties of perjury this 29th day
of October, 1998.


                              /s/ Kenneth Pelowski
                              ----------------------------------------------
                              Kenneth Pelowski, Executive Vice President and
                              Chief Financial Officer

                                      -6-
<PAGE>
 
                                   EXHIBIT B

                           FORM OF RIGHTS CERTIFICATE

CERTIFICATE NO. R-                                                 ______ RIGHTS

     NOT  EXERCISABLE  AFTER OCTOBER 28, 2008 OR EARLIER IF TERMINATED BY THE
     COMPANY.  THE RIGHTS ARE SUBJECT TO REDEMPTION, AT THE OPTION OF THE
     COMPANY, AT $.01 PER RIGHT  ON  THE  TERMS  SET  FORTH  IN  THE  RIGHTS
     AGREEMENT. UNDER  CERTAIN  CIRCUMSTANCES, RIGHTS  BENEFICIALLY  OWNED  BY
     AN  ACQUIRING  PERSON  OR  AN  AFFILIATE  OR  ASSOCIATE  OF  AN ACQUIRING
     PERSON (AS SUCH TERMS ARE DEFINED IN THE RIGHTS AGREEMENT) AND ANY
     SUBSEQUENT HOLDER OF SUCH RIGHTS MAY BECOME NULL AND VOID.  [THE RIGHTS
     REPRESENTED BY THIS RIGHTS CERTIFICATE ARE OR WERE BENEFICIALLY OWNED BY A
     PERSON WHO WAS OR BECAME AN ACQUIRING PERSON OR AN AFFILIATE OR ASSOCIATE
     OF AN ACQUIRING PERSON (AS SUCH TERMS  ARE  DEFINED  IN  THE  RIGHTS
     AGREEMENT).  ACCORDINGLY, THIS  RIGHTS  CERTIFICATE  AND  THE  RIGHTS
     REPRESENTED  HEREBY MAY BECOME NULL AND VOID IN THE CIRCUMSTANCES SPECIFIED
     IN SECTION 7(E) OF SUCH RIGHTS AGREEMENT./*/]

RIGHTS CERTIFICATE

     This certifies that ________________________, or registered assigns, is the
registered owner of the number of Rights set forth above, each of which entitles
the owner thereof, subject to the terms, provisions and conditions of the
Preferred Shares Rights Agreement, dated as of October 29, 1998 (the "RIGHTS
AGREEMENT"), between Preview Travel, Inc., a Delaware corporation (the
"COMPANY"), and U.S. Stock Transfer Corporation (the "RIGHTS AGENT"), to
purchase from the Company at any time after the Distribution Date (as such term
is defined in the Rights Agreement) and prior to 5:00 P.M., San Francisco,
California time, on October 28, 2008, at the office of the Rights Agent
designated for such purpose, or at the office of its successor as Rights Agent,
one one-thousandth (1/1,000) of a fully paid non-assessable share of Series A
Participating Preferred Stock (the "PREFERRED SHARES"), of the Company, at a
purchase price of $100.00 per one-thousandth of a Preferred Share (the "PURCHASE
PRICE"), upon presentation and surrender of this Rights Certificate with the
Form of Election to Purchase and related Certificate duly executed.  The number
of Rights evidenced by this Rights Certificate (and the number of one-
thousandths of a Preferred Share which may be purchased upon exercise hereof)
set forth above, are the number and Purchase Price as of _____________, ____,
based on the Preferred Shares as constituted at such date.  As provided in the
Rights Agreement, the Purchase Price and the number and kind of Preferred Shares
or other securities which may be 



- ------------------
/*/ The portion of the legend in bracket shall be inserted only if applicable
    and shall replace the preceding sentence.

                                      -1-
<PAGE>
 
purchased upon the exercise of the Rights evidenced by this Rights Certificate
are subject to modification and adjustment upon the happening of certain events.

     This Rights Certificate is subject to all of the terms, provisions and
conditions of the Rights Agreement, which terms, provisions and conditions are
hereby incorporated herein by reference and made a part hereof and to which
Rights Agreement reference is hereby made for a full description of the rights,
limitations of rights, obligations, duties and immunities hereunder of the
Rights Agent, the Company and the holders of the Rights Certificates, which
limitations of rights include the temporary suspension of the exercisability of
such Rights under the specific circumstances set forth in the Rights Agreement.
Copies of the Rights Agreement are on file at the principal executive offices of
the Company and the above-mentioned office of the Rights Agent.

     Subject to the provisions of the Rights Agreement, the Rights evidenced by
this Rights Certificate (i) may be redeemed by the Company, at its option, at a
redemption price of $.01 per Right or (ii) may be exchanged by the Company in
whole or in part for Common Shares, substantially equivalent rights or other
consideration as determined by the Company.

     This Rights Certificate, with or without other Rights Certificates, upon
surrender at the office of the Rights Agent designated for such purpose, may be
exchanged for another Rights Certificate or Rights Certificates of like tenor
and date evidencing Rights entitling the holder to purchase a like aggregate
amount of securities as the Rights evidenced by the Rights Certificate or Rights
Certificates surrendered shall have entitled such holder to purchase.  If this
Rights Certificate shall be exercised in part, the holder shall be entitled to
receive upon surrender hereof another Rights Certificate or Rights Certificates
for the number of whole Rights not exercised.

     No fractional portion less than integral multiples of one one-thousandth of
a Preferred Share will be issued upon the exercise of any Right or Rights
evidenced hereby but in lieu thereof a cash payment will be made, as provided in
the Rights Agreement.

     No holder of this Rights Certificate, as such, shall be entitled to vote or
receive dividends or be deemed for any purpose the holder of the Preferred
Shares or of any other securities of the Company which may at any time be
issuable on the exercise hereof, nor shall anything contained in the Rights
Agreement or herein be construed to confer upon the holder hereof, as such, any
of the rights of a stockholder of the Company or any right to vote for the
election of directors or upon any matter submitted to stockholders at any
meeting thereof, or to give or withhold consent to any corporate action, or to
receive notice of meetings or other actions affecting stockholders (except as
provided in the Rights Agreement), or to receive dividends or subscription
rights, or otherwise, until the Right or Rights evidenced by this Rights
Certificate shall have been exercised as provided in the Rights Agreement.

     This Rights Certificate shall not be valid or obligatory for any purpose
until it shall have been countersigned by the Rights Agent.

                                      -2-
<PAGE>
 
     WITNESS the facsimile signature of the proper officers of the Company and
its corporate seal.  Dated as of _______________ , 19__.


ATTEST:                                  PREVIEW TRAVEL, INC.



_______________________________          By: ______________________________
        Secretary                                     President



Countersigned:

U.S. Stock Transfer Corporation

 
_______________________________
as Rights Agent

By:____________________________
     Authorized Signature

                                      -3-
<PAGE>
 
                   FORM OF REVERSE SIDE OF RIGHTS CERTIFICATE

                               FORM OF ASSIGNMENT

(To be executed by the registered holder if such holder desires to transfer the
Rights Certificate)


FOR VALUE RECEIVED _____________________________ hereby sells, assigns and 
transfers unto _________________________________________________________________
(Please print name and address of transferee)

________________________________________________________________________________
this Rights Certificate, together with all right, title and interest therein, 
and does hereby irrevocably constitute and appoint ___________________ Attorney,
to transfer the Rights Certificate on the books of the within-named Company,
with full power of substitution.

Dated:             , 19__


 
                              ____________________________________
                              Signature


Signature Guaranteed:

     Signatures must be guaranteed by a member firm of a registered national
securities exchange, a member of the National Association of Securities Dealers,
Inc., a commercial bank or trust company having an office or correspondent in
the United States or any other member of a medallion signature guarantee program
approved by the Securities Transfer Association.

                                      -4-
<PAGE>
 
                                  CERTIFICATE

The undersigned hereby certifies by checking the appropriate boxes that:

          (1) this Rights Certificate [ ]  is [ ]  is not being sold, assigned
and transferred by or on behalf of a Person who is or was an Acquiring Person,
or an Affiliate or Associate of any such Person (as such terms are defined in
the Rights Agreement);

          (2) after due inquiry and to the best knowledge of the undersigned, it
[ ] did

[ ] did not acquire the Rights evidenced by this Rights Certificate from any
Person who is, was or subsequently became an Acquiring Person or an Affiliate or
Associate of any such Person.
Dated: _______________, ______________


 
                              __________________________________
                              Signature

Signature Guaranteed:

     Signatures must be guaranteed by a member firm of a registered national
securities exchange, a member of the National Association of Securities Dealers,
Inc., a commercial bank or trust company having an office or correspondent in
the United States or any other member of a medallion signature guarantee program
approved by the Securities Transfer Association.

                                      -5-
<PAGE>
 
            Form of Reverse Side of Rights Certificate -- continued

                          FORM OF ELECTION TO PURCHASE

     (To be executed if holder desires to exercise the Rights Certificate)


To: _____________________________

     The undersigned hereby irrevocably elects to exercise ____________________
Rights represented by this Rights Certificate to purchase the number of one-
thousandths of a Preferred Share issuable upon the exercise of such Rights and
requests that certificates for such number of one-thousandths of a Preferred
Share be issued in the name of:

Please insert social security or other identifying number

________________________________________________________________________________
(Please print name and address)

________________________________________________________________________________

If such number of Rights shall not be all the Rights evidenced by this Rights
Certificate, a new Rights Certificate for the balance shall be registered in the
name of and delivered to:

Please insert social security or other identifying number

________________________________________________________________________________
(Please print name and address)

________________________________________________________________________________

Dated: _____________, ________


 
                              ______________________________________
                              Signature


Signature Guaranteed:

     Signatures must be guaranteed by a member firm of a registered national
securities exchange, a member of the National Association of Securities Dealers,
Inc., a commercial bank or trust company having an office or correspondent in
the United States or any other member of a medallion signature guarantee program
approved by the Securities Transfer Association.

                                      -6-
<PAGE>
 
                                  CERTIFICATE

     The undersigned hereby certifies by checking the appropriate boxes that:

          (1) the Rights evidenced by this Rights Certificate [ ]  are [ ] are
not being exercised by or on behalf of a Person who is or was an Acquiring
Person or an Affiliate or Associate of any such Person (as such terms are
defined in the Rights Agreement);

          (2) after due inquiry and to the best knowledge of the undersigned, it
[ ] did [ ] did not acquire the Rights evidenced by this Rights Certificate from
any Person who is, was or subsequently became an Acquiring Person or an
Affiliate or Associate of any such Person.
Dated:_______________, ______


 
                              ___________________________________________
                              Signature

Signature Guaranteed:

     Signatures must be guaranteed by a member firm of a registered national
securities exchange, a member of the National Association of Securities Dealers,
Inc., a commercial bank or trust company having an office or correspondent in
the United States or any other member of a medallion signature guarantee program
approved by the Securities Transfer Association.

                                      -7-
<PAGE>
 
            Form of Reverse Side of Rights Certificate -- continued

                                     NOTICE

     The signature in the foregoing Forms of Assignment and Election must
conform to the name as written upon the face of this Rights Certificate in every
particular, without alteration or enlargement or any change whatsoever.

                                      -8-
<PAGE>
 
                                   EXHIBIT C

                              PREVIEW TRAVEL, INC.

                            STOCKHOLDER RIGHTS PLAN
                                        
                               SUMMARY OF RIGHTS


<TABLE>

<S>                       <C>
Distribution and          The Board of Directors has declared a dividend of one Right for
Transfer of Rights;       each share of Common Stock of Preview Travel, Inc. (the "COMPANY")
Rights Certificate:       outstanding.  Prior to the Distribution Date referred to below, the
- ------------------        Rights will be evidenced by and trade with the certificates for the
                          Common Stock.  After the Distribution Date, the Company will mail
                          Rights certificates to the Company's stockholders and the Rights
                          will become transferable apart from the Common Stock.

Distribution Date:        Rights will separate from the Common Stock and become exercisable
- ------------------        following the tenth day (or such later date as may be determined by
                          a majority the Company's Board of Directors) after a person or
                          group (a) acquires beneficial ownership of 20% or more of the
                          Company's Common Stock, or (b) announces a tender or exchange
                          offer, the consummation of which would result in ownership by a
                          person or group of 20% or more of the Company's Common Stock (the
                          "DISTRIBUTION DATE").

Preferred Stock           After the Distribution Date, each Right will entitle the holder to
Purchasable Upon          purchase, for $100.00, a fraction of a share of the Company's
Exercise of Rights:       Preferred Stock with economic terms similar to that of one share of
- ------------------        the Company's Common Stock.

Flip-In:                  If an acquiror (an "ACQUIRING PERSON") obtains 20% or more of the
- -------                   Company's Common Stock (other than pursuant to a tender offer
                          deemed fair by the Board of Directors (a "PERMITTED OFFER"), then
                          each Right (other than Rights owned by an Acquiring Person or its
                          affiliates) will entitle the holder thereof to purchase, for the
                          exercise price, a number of shares of the Company's Common Stock
                          having a then current market value of twice the exercise price.
</TABLE> 
<PAGE>
 
<TABLE> 

<S>                       <C> 
Flip-Over:                If, after the Shares Acquisition Date (defined below), (a) the
- ---------                 Company merges into another entity, (b) an acquiring entity merges
                          into the Company or (c) the Company sells more than 50% of the
                          Company's assets or earning power, then each Right (other than
                          Rights owned by an Acquiring Person or its affiliates) will entitle
                          the holder thereof to purchase, for the exercise price, a number of
                          shares of Common Stock of the person engaging in the transaction
                          having a then current market value of twice the exercise price
                          (unless the transaction satisfies certain conditions and is
                          consummated with a person who acquired shares pursuant to a
                          Permitted Offer, in which case the Rights will expire).

Exchange Provision:       At any time after an event triggering the flip-in or flip-over
- ------------------        rights and prior to the acquisition by the Acquiring Person of 50%
                          or more of the outstanding Common Stock, the Board of Directors of
                          the Company may exchange the Rights (other than Rights owned by the
                          Acquiring Person or its affiliates), in whole or in part, at an
                          exchange ratio of one share of Common Stock per Right (subject to
                          adjustment).

Redemption of             Rights will be redeemable at the Company's option for $0.01 per
the Rights:               Right at any time on or prior to the tenth day (or such later date
- ----------                as may be determined by a majority of the Board of Directors) after
                          public announcement that a person has acquired beneficial ownership
                          of 20% or more of the Company's Common Stock (the "SHARES
                          ACQUISITION DATE").
 
Expiration of             The Rights expire on the earliest of (a) October 28, 2008, (b)
the Rights:               exchange or redemption of the Rights as described above or (c)
- -----------               consummation of a merger or consolidation or sale of assets
                          resulting in expiration of the Rights as described above.
 
Amendment of Terms        The terms of the Rights and the Rights Agreement may be amended in
of Rights:                any respect without the consent of the Rights holders on or prior
- ---------                 to the Distribution Date; thereafter, the terms of the Rights and
                          the Rights Agreement may be amended without the consent of the
                          Rights holders in order to cure any ambiguities or to make changes
                          which do not adversely affect the interests of Rights holders
                          (other than the Acquiring Person).
 
Voting Rights:            Rights will not have any voting rights.
- -------------              

Anti-Dilution             Rights will have the benefit of certain customary anti-dilution
Provisions:               provisions.
- ----------               
</TABLE> 
<PAGE>
 
<TABLE> 

<S>                       <C> 
Taxes:                    The Rights distribution should not be taxable for federal income
- -----                     tax purposes.  However, following an event which renders the Rights
                          exercisable or upon redemption of the Rights, stockholders may
                          recognize taxable income.
</TABLE>

The foregoing is a summary of certain principal terms of the Stockholder Rights
Plan only and is qualified in its entirety by reference to the detailed terms of
the Rights Agreement dated as of October 29, 1998, between the Company and the
Rights Agent.


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