AAON INC
8-A12G, 1999-02-26
AIR-COND & WARM AIR HEATG EQUIP & COMM & INDL REFRIG EQUIP
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                                    FORM 8-A

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D. C. 20549


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

                                   AAON, INC.
                                   ----------
             (Exact name of registrant as specified in its charter)


                         COMMISSION FILE NO. 000-18953


        Nevada                                             87-0448736
        ------                                             ----------
(State of incorporation)                       (IRS Employer Identification No.)


2425 South Yukon, Tulsa, Oklahoma                      74107
- ---------------------------------                      -----
(Address of principal executive offices)             (Zip Code)


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

Title of each class                               Name of each exchange on which
to be so registered                               each class is to be registered
- -------------------                               ------------------------------
       None                                                   None

         If this Form relates to the  registration of a class of debt securities
and is effective upon filing pursuant to General  Instruction  A.(c)(1),  please
check the following box. _

         If this Form relates to the  registration of a class of debt securities
and is to become effective simultaneously with the effectiveness of a concurrent
registration  statement  under the  Securities  Act of 1933  pursuant to General
Instruction A.(c)(2), please check the following box. _

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

                               Rights to Purchase
                            Series A Preferred Stock
                            ------------------------
                                (Title of class)



<PAGE>


               Item 1. Description of Securities To Be Registered

         On  February  18,  1999,  the Board of  Directors  of AAON,  Inc.  (the
"Company")  authorized  and  declared,  effective  February 19, 1999, a dividend
distribution  of one Right for each  outstanding  share of the Company's  common
stock,  $.004 par value (the "Common  Stock"),  to stockholders of record at the
close of business on March 1, 1999. Each Right entitles the registered holder to
purchase  from the Company one  one-thousandth  (1/1,000) of a share of Series A
Preferred  Stock,  par value  $.001  per share  (the  "Preferred  Stock"),  at a
Purchase Price of $60.00 per one one-thousandth (1/1,000) of a share, subject to
adjustment.  The  description  and terms of the Rights are set forth in a Rights
Agreement (the "Rights Agreement") between the Company and Progressive  Transfer
Company, as Rights Agent (the "Rights Agent").

         Initially, the Rights will be attached to all Common Stock certificates
representing  shares then outstanding,  and no separate Rights Certificates will
be distributed.  The Rights will separate from the Common Stock upon the earlier
of (i) ten (10)  business  days  following a public  announcement  that a person
(other than Norman H.  Asbjornson,  the Company's  Chief  Executive  Officer) or
group of affiliated or associated persons (an "Acquiring  Person") has acquired,
or obtained the right to acquire,  beneficial  ownership of twenty percent (20%)
or more of the  outstanding  shares  of Common  Stock  (the  "Stock  Acquisition
Date"),  or (ii) ten (10)  business  days (or such  later  date as the  Board of
Directors shall  determine)  following the  commencement of a tender or exchange
offer that would result in a person or group beneficially  owning twenty percent
(20%) or more of  such outstanding  shares of Common Stock. The date  the Rights
separate is referred to as the "Distribution Date."

         Until the  Distribution  Date,  (i) the Rights will be evidenced by the
Common Stock certificates and will be transferred with and only with such Common
Stock  certificates,  (ii) new Common Stock  certificates  issued after March 1,
1999 will contain a notation  incorporating  the Rights  Agreement by reference,
and (iii) the  surrender  for  transfer  of any  certificates  for Common  Stock
outstanding will also constitute the transfer of the Rights  associated with the
Common Stock represented by such certificates. Pursuant to the Rights Agreement,
the  Company  reserves  the  right  to  require  prior  to the  occurrence  of a
Triggering  Event (as defined below) that, upon any exercise of Rights, a number
of Rights be  exercised  so that only whole  shares of  Preferred  Stock will be
issued.

         The Rights are not  exercisable  until the  Distribution  Date and will
expire at the close of business on March 1, 2009, unless earlier redeemed by the
Company as described below.

         As soon as practicable after the Distribution Date, Rights Certificates
will be mailed to  holders  of  record  of the  Common  Stock as of the close of
business  on  the  Distribution  Date  and,  thereafter,   the  separate  Rights
Certificates  will  represent the Rights.  Except in  connection  with shares of
Common Stock issued or sold  pursuant to the exercise of stock options under any
employee plan or arrangements,  or upon the exercise,  conversion or exchange of
securities  hereafter issued by the Company,  or as otherwise  determined by the
Board of Directors, only shares of Common Stock issued prior to the Distribution
Date will be issued with Rights.

         In the event that (i) the  Company is the  surviving  corporation  in a
merger or other business  combination with an Acquiring Person (or any associate
or affiliate  thereof) and its Common Stock remains  outstanding  and unchanged,
(ii) any person shall acquire  beneficial  ownership of more than twenty percent
(20%) of the outstanding  shares of Common Stock (except pursuant to (A) certain
consolidations  or mergers  involving  the Company or sales or  transfers of the
combined assets,  cash flow or earning power of the Company and its subsidiaries
or (B) an offer for all  outstanding  shares of Common Stock at a price and upon
terms and conditions  which the Board of Directors  determines to be in the best
interests  of the  Company  and its  stockholders),  or  (iii)  there  occurs  a
reclassification  of  securities,  a  recapitalization  of the Company or any of
certain  business   combinations  or  other  transactions  (other  than  certain
consolidations  and mergers  involving the Company and sales or transfers of the
combined assets, cash flow or earning power of the Company and its subsidiaries)
involving  the  Company  or any of its  subsidiaries  which  has the  effect  of
increasing by more than one percent (1%) the proportionate share of any class of
the  outstanding  equity  securities  of the Company or any of its  subsidiaries
beneficially  owned  by an  Acquiring  Person  (or any  associate  or  affiliate
thereof),  each holder of a Right (other than the  Acquiring  Person and certain
related  parties)  will  thereafter  have the right to receive,  upon  exercise,
Common Stock (or, in certain  circumstances,  cash, property or other securities
of the  Company)  having a value  equal to two times the  Purchase  Price of the
Right. Notwithstanding any of the foregoing,  following the occurrence of any of
the events  described in this paragraph,  all Rights that are, or (under certain
circumstances specified in the Rights Agreement) were, beneficially owned by any
Acquiring  Person will be null and void. The events  described in this paragraph
are referred to as "Flip-in Events."

         For example,  at a Purchase  Price of $60.00 per Right,  each Right not
owned by an  Acquiring  Person (or by certain  related  parties or  transferees)
following an event set forth in the preceding paragraph would entitle its holder
to purchase  $120.00  worth of Common  Stock (or other  consideration,  as noted
above) for $60.00.  Assuming  that the Common Stock had a per share market price
of $10.00 at such time,  the holder of each valid  Right  would be  entitled  to
purchase twelve shares of Common Stock for $60.00.

         In the event that, at any time  following the Stock  Acquisition  Date,
(i) the  Company  shall  enter  into a  merger  or  other  business  combination
transaction  in which the  Company is not the  surviving  corporation,  (ii) the
Company  is the  surviving  corporation  in a  consolidation,  merger or similar
transaction  pursuant to which all or part of the  outstanding  shares of Common
Stock are changed into or exchanged  for stock or other  securities of any other
person  or cash or any other  property  or (iii)  more than 50% of the  combined
assets,  cash flow or earning power of the Company and its  subsidiaries is sold
or transferred  (in each case other than certain  consolidations  with,  mergers
with  and  into,  or  sales  of  assets,  cash  flow or  earning  power by or to
subsidiaries of the Company as specified in the Rights  Agreement),  each holder
of a Right (except Rights which  previously have been voided as set forth above)
shall thereafter have the right to receive,  upon exercise,  common stock of the
acquiring  company  having a value equal to two times the Purchase  Price of the
Right.  The events  described in this  paragraph  are referred to as  "Flip-over
Events."  Flip-in Events and Flip-over  Events are referred to  collectively  as
"Triggering Events."

         The Purchase  Price  payable,  the number and kind of shares covered by
each Right and the number of Rights  outstanding  are subject to adjustment from
time to time to prevent  dilution (i) in the event of a stock  dividend on, or a
subdivision,  combination or  reclassification  of, the Preferred Stock, (ii) if
holders of the Preferred Stock are granted  certain rights,  options or warrants
to subscribe for Preferred Stock or securities  convertible into Preferred Stock
at less than the current market price of the Preferred  Stock, or (iii) upon the
distribution  to holders of the  Preferred  Stock of evidences of  indebtedness,
cash (excluding regular quarterly cash dividends),  assets (other than dividends
payable in Preferred Stock) or subscription rights or warrants (other than those
referred to in (ii) immediately above).

         With certain  exceptions,  no adjustment in the Purchase  Price will be
required until cumulative adjustments amount to at least one percent (1%) of the
Purchase  Price.  No  fractional  shares of  Preferred  Stock are required to be
issued (other than fractions which are integral  multiples of one one-thousandth
(1/1,000) of a share of Preferred  Stock) and, in lieu thereof,  the Company may
make an adjustment  in cash based on the market price of the Preferred  Stock on
the trading date immediately prior to the date of exercise.

         At any time after any person or group  becomes an Acquiring  Person and
prior to the  acquisition by such person or group of fifty percent (50%) or more
of the outstanding shares of Common Stock, the Board of Directors of the Company
may,  without  payment of the Purchase Price by the holder,  exchange the Rights
(other than Rights owned by such person or group,  which will become  void),  in
whole or in part,  for shares of Common  Stock at an exchange  ratio of one-half
(1/2)  the  number  of shares  of  Common  Stock  (or in  certain  circumstances
Preferred Stock) for which a Right is exercisable  immediately prior to the time
of the Company's decision to exchange the Rights (subject to adjustment).

         At any time until the Stock  Acquisition  Date,  the Company may redeem
the Rights in whole, but not in part, at a price of $0.001 per Right (payable in
cash, shares of Common Stock or other  consideration  deemed  appropriate by the
Board of  Directors).  Immediately  upon the  action of the  Board of  Directors
ordering  redemption of the Rights, the Rights will terminate and the only right
of the holders of Rights will be to receive the $0.001 redemption price.

         Until a Right is exercised,  the holder thereof,  as such, will have no
rights as a stockholder of the Company, including, without limitation, the right
to vote or to receive  dividends.  While the distribution of the Rights will not
be taxable to stockholders or to the Company,  stockholders may,  depending upon
the circumstances,  recognize taxable income in the event that the Rights become
exercisable  for Common  Stock (or other  consideration)  of the  Company or for
common stock of an acquiring company as set forth above or in the event that the
Rights are redeemed.

         Other than those provisions relating to the principal economic terms of
the Rights,  any of the provisions of the Rights Agreement may be amended by the
Board of  Directors  of the  Company at any time  during the period in which the
Rights are redeemable. At any time when the Rights are no longer redeemable, the
provisions  of the  Rights  Agreement  may be  amended by the Board only if such
amendment does not adversely affect the interest of holders of Rights (excluding
the interest of any Acquiring Person); provided,  however, that no amendment may
cause the Rights again to become redeemable.

         A copy of the Rights Agreement  specifying the terms of the Rights, the
form of Certificate of Designation, Preferences and Rights of Series A Preferred
Stock and the form of Rights  Certificate are filed herewith as Exhibits and are
incorporated  herein by  reference.  Copies  of the  Rights  Agreement  are also
available free of charge from the Rights Agent. The foregoing description of the
Rights does not  purport to be  complete  and is  qualified  in its  entirety by
reference to the Rights Agreement.

Item 2.   Exhibits

1    Rights Agreement,  dated as of February 19, 1999, by and between AAON, Inc.
     and Progressive Transfer Company, as Rights
         Agent, including exhibits thereto.

2    Form of  Certificate  of  Designation,  Preferences  and Rights of Series A
     Preferred  Stock  of  AAON,  Inc.  (attached  as  Exhibit  1 to the  Rights
     Agreement filed as Exhibit 1 hereto).

3    Form of Rights  Certificate  (attached as Exhibit 2 to the Rights Agreement
     filed as Exhibit 1 hereto).


<PAGE>


                                   SIGNATURES


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


                                      AAON, INC.


February 25, 1999                     By  /s/ Norman H. Asbjornson      
                                          -------------------------------
                                              Norman H. Asbjornson
                                              President and Treasurer


<PAGE>


                                Index to Exhibits

1    Rights Agreement,  dated as of February 19, 1999, by and between AAON, Inc.
     and  Progressive  Transfer  Company,  as Rights Agent,  including  exhibits
     thereto.

2    Form of  Certificate  of  Designation,  Preferences  and Rights of Series A
     Preferred  Stock  of  AAON,  Inc.  (attached  as  Exhibit  1 to the  Rights
     Agreement filed as Exhibit 1 hereto).

3    Form of Rights  Certificate  (attached as Exhibit 2 to the Rights Agreement
     filed as Exhibit 1 hereto).


<PAGE>


                                   AAON, INC.

                                       and


                          PROGRESSIVE TRANSFER COMPANY

                                  Rights Agent


                                Rights Agreement

                          Dated as of February 19, 1999




<PAGE>


                                TABLE OF CONTENTS

Section                                                                     Page

Section 1.        Certain Definitions                                          1

Section 2.        Appointment of Rights Agent                                  7

Section 3.        Issuance of Rights Certificates                              7
         (a)      Distribution Date; Rights Certificates.                      7
         (b)      Common Stock Certificates; Summary of Rights.                8
         (c)      Legend.                                                      8

Section 4.        Form of Rights Certificates                                  9
         (a)      Form; Date.                                                  9
         (b)      Acquiring Person Legend.                                     9

Section 5.        Countersignature and Registration                           10
         (a)      Signatures.                                                 10
         (b)      Registration and Transfer.                                  11

Section 6.        Transfer, Split Up, Combination and Exchange of Rights
                  Certificates; Mutilated, Destroyed, Lost or Stolen
                  Rights Certificates                                         11
         (a)      Procedure.                                                  11
         (b)      Issuance of New Rights Certificates.                        11

Section 7.        Exercise of Rights; Purchase Price; Expiration 
                  Date of Rights                                              12
         (a)      Exercise.                                                   12
         (b)      Purchase Price.                                             13
         (c)      Rights Agent Actions.                                       13
         (d)      Partial Exercise.                                           13
         (e)      Termination of Acquiring Person's Rights.                   13
         (f)      Surrender of Rights Certificates; Identity of
                  Beneficial Owner.                                           14

Section 8.        Cancellation and Destruction of Rights Certificates         14

Section 9.        Reservation and Availability of Capital Stock               14
         (a)      Reservation of Capital Stock.                               14
         (b)      Listing.                                                    15
         (c)      Registration under the Act.                                 15
         (d)      Covenant Regarding Capital Stock.                           16
         (e)      Transfer Taxes and Charges.                                 16

Section 10.       Preferred Stock Record Date                                 16

Section 11.       Adjustment of Purchase Price; Number and Kind
                  of Shares or Number of Rights                               17
         (a)      Certain Adjustments.                                        17
         (b)      Purchase Price Adjustment -- Capital Stock.                 21
         (c)      Purchase Price Adjustment -- Cash, Assets, etc.             21
         (d)      Current Market Price                                        22
         (e)      Purchase Price Adjustment Threshold.                        23
         (f)      Equivalent Adjustments.                                     24
         (g)      Post-Adjustment Rights Issuances.                           24
         (h)      Preferred Stock Anti-Dilution.                              24
         (i)      Adjustment of Number of Rights.                             24
         (j)      Rights Certificates.                                        25
         (k)      Adjustment Below Par Value.                                 25
         (l)      Adjustment Effective as of Future Date; Exercise.           25
         (m)      Tax Adjustments.                                            26
         (n)      Restriction on Certain Transactions.                        26
         (o)      Restriction Against Diminishing Benefits of the Rights.     27
         (p)      Common Stock Adjustments.                                   27

Section 12.       Certificate of Adjusted Purchase Price or Number of Shares  27

Section 13.       Consolidation, Merger or Sale or Transfer of
                  Assets or Earning Power                                     28
         (a)      Flip-over Event.                                            28
         (b)      Principal Party.                                            29
         (c)      Supplemental Agreement.                                     29
         (d)      Exceptions.                                                 30

Section 14.       Fractional Rights and Fractional Shares                     31
         (a)      Fractional Rights.                                          31
         (b)      Fractional Shares of Preferred Stock.                       31
         (c)      Fractional Shares of Common Stock.                          32
         (d)      Waiver of Fractional Rights and Shares.                     32

Section 15.       Rights of Action                                            32

Section 16.       Agreement of Rights Holders                                 33

Section 17.       Rights Certificate Holder Not Deemed a Stockholder          33

Section 18.       Concerning the Rights Agent                                 34
         (a)      Compensation.                                               34
         (b)      Reliance.                                                   34

Section 19.       Merger or Consolidation or Change of Name of Rights Agent   34
         (a)      Successor.                                                  34
         (b)      Prior Countersignatures.                                    35

Section 20.       Duties of Rights Agent                                      35
         (a)      Legal Counsel.                                              35
         (b)      Certification by the Company.                               35
         (c)      Liability for Negligence, etc.                              35
         (d)      Statements of Fact or Recitals.                             36
         (e)      Agreement; Adjustments.                                     36
         (f)      Further Assurances.                                         36
         (g)      Instructions.                                               36
         (h)      Dealing in Rights.                                          36
         (i)      Agents; Reasonable Care.                                    37
         (j)      Expenses; Repayment Assurances.                             37
         (k)      Exercise of Rights; Consultation with Company.              37
         (l)      No Notice of Facts.                                         37

Section 21.       Change of Rights Agent                                      37

Section 22.       Issuance of New Rights Certificates                         38

Section 23.       Redemption and Termination                                  38
         (a)      Redemption.                                                 38
         (b)      Effect of Redemption; Procedure.                            39

Section 24.       Exchange                                                    39
         (a)      Right to Exchange                                           39
         (b)      Effect of Exchange; Procedure.                              40
         (c)      Common Stock Equivalents                                    40
         (d)      Insufficient Common Stock                                   40
         (e)      Fractional Shares                                           40

Section 25.       Notice of Certain Events                                    41
         (a)      Preferred Stock Transactions, etc.                          41
         (b)      Other Transactions.                                         42

Section 26.       Notices                                                     42

Section 27.       Supplements and Amendments                                  42

Section 28.       Successors                                                  43

Section 29.       Determinations and Actions by the Board of Directors, etc   43

Section 30.       Benefits of this Agreement                                  44

Section 31.       Severability                                                44

Section 32.       Governing Law                                               44

Section 33.       Counterparts                                                44

Section 34.       Descriptive Headings                                        44

Exhibit 1         Certificate of Designation, Preferences and Rights
                  of Series A Preferred Stock                                 46

Exhibit 2         Form of Rights Certificate                                  55

Exhibit 3         Letter to Stockholders                                      62

Exhibit 4         Press Release                                               67



<PAGE 1>

                                RIGHTS AGREEMENT


         RIGHTS AGREEMENT,  dated as of February 19, 1999, between AAON, INC., a
Nevada  corporation  (the  "Company"),  and  PROGRESSIVE  TRANSFER  COMPANY (the
"Rights Agent").

                                     RECITAL

         On February 18, 1999, the Board of Directors of the Company  authorized
and  declared,  effective  February 19, 1999 (the "Rights  Dividend  Declaration
Date"), a dividend  distribution of one Right for each share of Common Stock (as
hereinafter  defined)  of the  Company  outstanding  at the close of business on
March 1, 1999 (the "Record Date"),  and has authorized the issuance of one Right
(as such number may hereafter be adjusted as provided  herein) for each share of
Common Stock of the Company issued  between the Record Date (whether  originally
issued or delivered from the Company's treasury) and the Distribution Date, each
Right initially representing the right to purchase one one-thousandth of a share
of Series A  Preferred  Stock of the  Company  having  the  rights,  powers  and
preferences set forth in the form of Certificate of Designation, Preferences and
Rights  attached  hereto  as  Exhibit  1,  upon the  terms  and  subject  to the
conditions hereinafter set forth (the "Rights");

                                    AGREEMENT

         In consideration of the premises 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 (as
such term is  hereinafter  defined) of 20% or more of the shares of Common Stock
then outstanding,  but shall not include (i) the Company, (ii) any Subsidiary of
the Company, (iii) 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,  (iv) any Exempt
Person,  (v) any Person who is an  Acquiring  Person on the first date of public
announcement  of the  adoption of this  Agreement,  unless and until such Person
shall purchase or otherwise  become (as a result of actions taken by such Person
or its Affiliates or Associates) the Beneficial  Owner of any additional  shares
of Common Stock, or (vi) any Person who becomes an Acquiring  Person solely as a
result of a reduction in the number of shares of Common Stock outstanding due to
the  repurchase of shares of Common Stock by the Company,  unless and until such
Person shall purchase or otherwise  become (as a result of actions taken by such
Person or its  Affiliates  or  Associates)  the  Beneficial  Owner of additional
shares of Common Stock constituting 1% or more of the then outstanding shares of
Common Stock;  provided,  however,  that if a Person shall become the Beneficial
Owner of 20% or more of the Common  Stock of the  Company  then  outstanding  by
reason  of  share  repurchases  by the  Company  and  shall,  after  such  share
repurchases by the Company, become the Beneficial Owner of any additional Common
Stock of the  Company,  then such  Person  shall be  deemed to be an  "Acquiring
Person,"  unless upon the  consummation  of the  acquisition of such  additional
shares of Common Stock such Person does not  beneficially own 20% or more of the
shares of Common Stock then outstanding.  Notwithstanding the foregoing,  if the
Board of  Directors  of the Company  determines  in good faith that a Person who
would  otherwise be an Acquiring  Person,  as defined  pursuant to the foregoing
provisions of this paragraph, has become such inadvertently (including,  without
limitation,  because (i) such Person was unaware  that it  beneficially  owned a
percentage  of Common  Stock that  would  otherwise  cause such  Person to be an
Acquiring  Person, or (ii) such Person was aware of the extent of its Beneficial
Ownership of Common Stock 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 such  Person  divests as
promptly as  practicable  a sufficient  number of shares of Common Stock so that
such Person  would no longer be an Acquiring  Person as defined  pursuant to the
foregoing provisions of this paragraph,  then such Person shall not be deemed to
be or to have become an Acquiring Person for any purposes of this Agreement.

     (b) "Act" shall mean the  Securities  Act of 1933, as amended and in effect
from time to time.

     (c)  "Adjustment  Shares"  shall  have the  meaning  set  forth in  Section
11(a)(ii)  (Adjustment of Purchase Price; Number and Kind of Shares or Number of
Rights -- Certain Adjustments)

     (d) "Affiliate" and "Associate" shall have the respective meanings ascribed
to such  terms in Rule  12b-2 of the  General  Rules and  Regulations  under the
Exchange Act.

     (e) "Agreement" shall mean this Rights Agreement as originally  executed or
as it may  from  time  to  time  be  supplemented  or  amended  pursuant  to the
applicable provisions hereof.

     (f) 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,  directly or indirectly, has 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) or upon the exercise of conversion rights, exchange
          rights, rights, warrants or options, or otherwise;  provided, however,
          that a Person shall not, for purposes of this paragraph (i), be deemed
          the  "Beneficial  Owner" of or to  "beneficially  own," (A) securities
          tendered pursuant to a tender or exchange offer made by such Person or
          any of such  Person's  Affiliates  or  Associates  until such tendered
          securities  are accepted for purchase or exchange,  or (B)  securities
          issuable upon  exercise of Rights at any time prior to the  occurrence
          of a Triggering  Event,  or (C)  securities  issuable upon exercise of
          Rights from and after the  occurrence  of a  Triggering  Event,  which
          Rights were acquired by such Person or any of such Person's Affiliates
          or Associates  prior to the  Distribution  Date or pursuant to Section
          3(a) (Issuance of Rights  Certificates  -- Distribution  Date;  Rights
          Certificates) or Section 22 (Issuance of New Rights Certificates) (the
          "Original  Rights")  or  pursuant  to  Section  11(i)  (Adjustment  of
          Purchase  Price;  Number  and Kind of  Shares  or  Number of Rights --
          Adjustment of Number of Rights) in connection  with an adjustment made
          with respect to any Original Rights;

               (ii)  which such  Person or any of such  Person's  Affiliates  or
          Associates,  directly or indirectly,  has the right to vote or dispose
          of or has  "beneficial  ownership" of (as determined  pursuant to Rule
          13d-3 of the General Rules and  Regulations  under the Exchange  Act),
          including  pursuant to any agreement,  arrangement  or  understanding,
          whether or not in writing; provided,  however, that a Person shall not
          be deemed the  "Beneficial  Owner" of, or to  "beneficially  own," any
          security  under this  subparagraph  (ii) as a result of an  agreement,
          arrangement or  understanding to vote such security if such agreement,
          arrangement or understanding: (A) arises solely from a revocable proxy
          given in  response  to a public  proxy or  consent  solicitation  made
          pursuant to, and in accordance with, the applicable  provisions of the
          General Rules and  Regulations  under the Exchange Act, and (B) is not
          also  then  reportable  by such  Person  on a  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),
          for the purpose of acquiring,  holding,  voting (except  pursuant to a
          revocable  proxy as described in the proviso to  subparagraph  (ii) of
          this  paragraph  (f)) or  disposing  of any voting  securities  of the
          Company;

provided,  however,  that  nothing in this  paragraph  (f) shall  cause a Person
engaged in business as an underwriter of securities to be the "Beneficial Owner"
of or to  "beneficially  own," any  securities  acquired  through such  Person's
participation  in  good  faith  in a  firm  commitment  underwriting  until  the
expiration of forty (40) calendar days after the date of such acquisition.

     (g) "Board" means the Board of Directors of the Company.

     (h)  "Business  Day" shall mean any day other than a Saturday,  Sunday or a
day on which  banking  institutions  in the State of Oklahoma are  authorized or
obligated by law or executive order to close.

     (i) "Close of  Business"  on any given  date  shall mean 5:00 P.M.,  Tulsa,
Oklahoma  time,  on such  date;  provided,  however,  that if such date is not a
Business  Day it  shall  mean  5:00  P.M.,  Tulsa,  Oklahoma  time,  on the next
succeeding  Business Day.

     (j) "Common Stock" shall mean the common stock,  par value $.004 per share,
of the  Company,  except that  "Common  Stock" when used with  reference  to any
Person other than the Company  shall mean the capital  stock of such Person with
the greatest  voting power,  or the equity  securities or other equity  interest
having power to control or direct the management, of such Person.

     (k) "Common Stock  Equivalents" shall have the meaning set forth in Section
11(a)(iii) (Adjustment of Purchase Price; Number and Kind of Shares or Number of
Rights -- Certain Adjustments).

     (l)  "Company"  shall mean the Person  named as the  "Company" in the first
paragraph  of this  Agreement  until a successor  corporation  shall have become
such, or until a Principal Party shall assume, and thereafter be liable for, all
obligations  and duties of the Company  hereunder,  pursuant  to the  applicable
provisions of this Agreement, and thereafter "Company" shall mean such successor
corporation or Principal Party.

     (m)  "Current  Market  Price"  shall have the  meaning set forth in Section
11(d)  (Adjustment  of  Purchase  Price;  Number and Kind of Shares or Number of
Rights -- Current Market Price).

     (n) "Current Value" shall have the meaning set forth in Section  11(a)(iii)
(Adjustment of Purchase Price;  Number and Kind of Shares or Number of Rights --
Certain Adjustments).

     (o)  "Distribution  Date" shall have the meaning set forth in Section  3(a)
(Issuance of Rights  Certificates -- Distribution  Date;  Rights  Certificates).

     (p)  "Equivalent  Preferred  Stock"  shall  have the  meaning  set forth in
Section 11(b) (Adjustment of Purchase Price; Number and Kind of Shares or Number
of Rights -- Purchase Price Adjustment -- Capital Stock).

     (q)  "Exchange  Act" shall mean the  Securities  Exchange  Act of 1934,  as
amended and in effect on the date of this Agreement.

     (r) "Exchange Number" shall mean one-half of the number of shares of Common
Stock,  one-thousandths  of a share of Preferred Stock, or shares or other units
of other property for which a Right is exercisable immediately prior to the time
of the action of the Board to exchange the Rights.

     (s) "Exempt Person" shall mean Norman H. Asbjornson or his Affiliates.

     (t)  "Expiration  Date" shall have the  meaning  set forth in Section  7(a)
(Exercise of Rights; Purchase Price; Expiration Date of Rights -- Exercise).

     (u) "Final  Expiration  Date"  shall mean the Close of Business on March 1,
2009.

     (v) "Flip-in Event" shall mean any event described in Section 11(a)(ii) (A)
or (B)  (Adjustment  of Purchase  Price;  Number and Kind of Shares or Number of
Rights -- Certain Adjustments).

     (w)  "Flip-in  Trigger  Date"  shall have the  meaning set forth in Section
11(a)(iii) (Adjustment of Purchase Price; Number and Kind of Shares or Number of
Rights -- Certain Adjustments).

     (x) "Flip-over Event" shall mean any event described in clauses (x), (y) or
(z) of Section  13(a)  (Consolidation,  Merger or Sale or  Transfer of Assets or
Earning Power -- Flip-over Event).

     (y) "Original  Rights" shall have the meaning set forth in Section  1(f)(i)
(Certain Definitions).

     (z) "Person" shall mean any individual,  firm, corporation,  partnership or
other entity.

     (aa) "Preferred Stock" shall mean shares of Preferred Stock,  Series A, par
value $.001,  of the Company,  and, to the extent that there is not a sufficient
number of  shares of Series A  Preferred  Stock  authorized  to permit  the full
exercise of the Rights, any other series of Preferred Stock, par value $.001, of
the Company designated for such purpose containing terms  substantially  similar
to the terms of the Series A Preferred Stock.

     (bb)  "Principal  Party" shall have the meaning set forth in Section  13(b)
(Consolidation,  Merger  or Sale or  Transfer  of  Assets  or  Earning  Power --
Principal Party).

     (cc)  "Purchase  Price"  shall have the meaning  set forth in Section  4(a)
(Form of Rights Certificates -- Form; Date).

     (dd)  "Record  Date" shall have the meaning set forth in the Recital at the
beginning of the Agreement.

     (ee)  "Redemption  Date" shall have the meaning set forth in Section  23(a)
(Redemption   and  Termination  --  Redemption).

     (ff)  "Redemption  Price" shall have the meaning set forth in Section 23(a)
(Redemption   and  Termination  --  Redemption).

     (gg)  "Rights"  shall  have the  meaning  set forth in the  Recital  at the
beginning of the Agreement.

     (hh) "Rights  Agent"  shall mean the Person named as the "Rights  Agent" in
the first paragraph of this Agreement until a successor  Rights Agent shall have
become such pursuant to the applicable  provisions hereof and thereafter "Rights
Agent" shall mean such successor Rights Agent. If at any time there is more than
one Person  appointed by the Company as Rights Agent  pursuant to the applicable
provisions of this  Agreement,  "Rights  Agent" shall mean and include each such
Person.

     (ii) "Rights Certificates" shall have the meaning set forth in Section 3(a)
(Issuance of Rights Certificates -- Distribution Date; Rights Certificates).

     (jj) "Rights Dividend Declaration Date" shall have the meaning set forth in
the Recital at the beginning of the Agreement.

     (kk)  "Spread"  shall  have the  meaning  set forth in  Section  11(a)(iii)
(Adjustment of Purchase Price;  Number and Kind of Shares or Number of Rights --
Certain Adjustments).

     (ll)  "Stock  Acquisition  Date"  shall  mean  the  first  date  of  public
announcement  (which,  for purposes of this definition,  shall include,  without
limitation,  a report  filed or  amended  pursuant  to Section  13(d)  under the
Exchange Act) by the Company or an Acquiring Person that an Acquiring Person has
become such.

     (mm) "Subsidiary" shall mean, with reference to any Person, any corporation
or other entity of which a majority of the voting power of equity  securities or
majority of the equity interest is beneficially  owned,  directly or indirectly,
by such Person, or otherwise controlled by such Person.

     (nn)  "Substitution  Period"  shall have the  meaning  set forth in Section
11(a)(iii) (Adjustment of Purchase Price; Number and Kind of Shares or Number of
Rights -- Certain Adjustments).

     (oo)  "Trading  Day" shall have the meaning  set forth in Section  11(d)(i)
(Adjustment of Purchase Price;  Number and Kind of Shares or Number of Rights --
Current Market Price).

     (pp)  "Triggering  Event"  shall mean any  Flip-in  Event or any  Flip-over
Event.

<PAGE 7>

     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  hereof,  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) Distribution  Date; Rights  Certificates.  Until the earlier of (i) the
Close of Business on the tenth  Business  Day after the Stock  Acquisition  Date
(or, if the tenth  Business Day after the Stock  Acquisition  Date occurs before
the Record Date, the Close of Business on the Record Date), or (ii) the Close of
Business  on the tenth  Business  Day (or such  later  date as the  Board  shall
determine  prior to such time as any Person  becomes an Acquiring  Person) 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 upon  consummation
thereof such Person would be the  Beneficial  Owner of 20% or more of the shares
of Common  Stock then  outstanding  (the  earlier  of (i) and (ii) being  herein
referred  to as the  "Distribution  Date"),  (x) the  Rights  will be  evidenced
(subject  to  the  provisions  of  paragraph  (b)  of  this  Section  3) by  the
certificates  for the Common Stock registered in the names of the holders of the
Common  Stock  (which  certificates  for Common Stock shall be deemed also to be
certificates  for Rights) and not by separate  certificates,  and (y) the Rights
will be  transferable  only in  connection  with the transfer of the  underlying
shares of Common Stock (including a transfer to the Company,  except pursuant to
the  provision  of  Section  23  (Redemption  and  Termination)).   As  soon  as
practicable  after  the  Distribution  Date,  the  Rights  Agent  will  send  by
first-class,  insured, postage prepaid mail, to each record holder of the Common
Stock as of the Close of Business on the  Distribution  Date,  at the address of
such  holder  shown  on  the  records  of  the  Company,   one  or  more  rights
certificates,  in  substantially  the  form of  Exhibit  2 hereto  (the  "Rights
Certificates"),  evidencing  one Right for each  share of Common  Stock so held,
subject to adjustment as provided herein. In the event that an adjustment in the
number of Rights  per share of Common  Stock has been made  pursuant  to Section
11(p)  (Adjustment  of  Purchase  Price;  Number and Kind of Shares or Number of
Rights -- Common Stock  Adjustments)  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) (Fractional  Rights and Fractional
Shares --  Fractional  Rights)) so that Rights  Certificates  representing  only
whole  numbers  of  Rights  are  distributed  and  cash  is  paid in lieu of any
fractional  Rights.  As of and after the  Distribution  Date, the Rights will be
evidenced  solely by such Rights  Certificates.

<PAGE 8>

     (b)  Common  Stock  Certificates;   Summary  of  Rights.  With  respect  to
certificates  for the Common Stock  outstanding as of the Record Date, until the
Distribution  Date, the Rights  associated with the Common Stock  represented by
such  certificates  will  be  evidenced  by  such  certificates  alone  and  the
registered  holders of such Common Stock shall also be the registered holders of
the  associated  Rights.  Until  the  earlier  of the  Distribution  Date or the
Expiration Date, the transfer of any certificates  representing shares of Common
Stock in respect of which  Rights have been  issued  shall also  constitute  the
transfer  of the Rights  associated  with such  shares of Common  Stock.  On the
Record Date, or as soon as practicable thereafter,  the Company will send a copy
of a Summary of Rights to Purchase Preferred Stock, in substantially the form of
Exhibit 3 hereto (the  "Summary of  Rights"),  by  first-class,  postage-prepaid
mail,  to each  record  holder  of  shares  of  Common  Stock as of the close of
business of the Record Date,  at the address of such holder shown on the records
of the Company.

     (c)  Legend.  Rights  shall be issued in  respect of all  certificates  for
shares of Common Stock which are issued (whether  originally  issued or from the
Company's  treasury)  after the Record Date but prior to the earliest of the (i)
Distribution  Date, (ii) the Expiration  Date, or (iii) the Redemption Date, or,
in  certain  circumstances  provided  in  Section  22  (Issuance  of New  Rights
Certificates) after the Distribution Date. Certificates representing such shares
of Common Stock 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 the  Rights  Agreement  dated as of
          February 19, 1999,  by and between  AAON,  Inc.  (the  "Company")  and
          Progressive   Transfer   Company,   as  Rights   Agent  (the   "Rights
          Agreement"),  the terms of which  are  hereby  incorporated  herein by
          reference and a copy of which is on file at the  principal  offices of
          the Company. 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. The Company will mail
          to the holder of this certificate a copy of the Rights  Agreement,  as
          in  effect  on the date of  mailing,  without  charge  promptly  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
earliest of (i) the  Distribution  Date, (ii) the Expiration Date, and (iii) the
Redemption Date, (x) the Rights  associated with the Common Stock represented by
such  certificates  shall  be  evidenced  by such  certificates  alone,  (y) the
registered  holders of such Common Stock shall also be the registered holders of
the associated  Rights,  and (z) the transfer of any of such certificates  shall
also constitute the transfer of the Rights associated with such shares of Common
Stock. In the event that the Company purchases, or acquires any shares of Common
Stock  after the  Record  Date but prior to the  Distribution  Date,  any rights
associated with such shares of Common Stock shall be deemed canceled and retired
so that the Company shall not be entitled to exercise any Rights associated with
shares of Common Stock which are no longer outstanding.

<PAGE 9>

     Section 4. Form of Rights Certificates.

     (a) Form;  Date.  The Rights  Certificates  (and the forms of  election  to
purchase and of assignment to be printed on the reverse  thereof)  shall each be
substantially  in the form set forth in Exhibit 2 hereto 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 any  securities  association  on whose  interdealer  quotation
system the  Rights  may be from time to time  authorized  for  quotation,  or to
conform  to usage.  Subject to the  provisions  of  Section  11  (Adjustment  of
Purchase  Price;  Number and Kind of Shares or Number of Rights)  and Section 22
(Issuance  of  New  Rights  Certificates),  the  Rights  Certificates,  whenever
distributed,  shall be  dated as of the  Record  Date  and on their  face  shall
entitle the holders thereof to purchase such number of one  one-thousandths of a
share of  Preferred  Stock as shall be set forth  therein at the price set forth
therein (such  exercise price per one  one-thousandth  of a share is referred to
herein  as the  "Purchase  Price"),  but  the  amount  and  type  of  securities
purchasable upon the exercise of each Right and the Purchase Price thereof shall
be subject to adjustment as provided herein.

     (b) Acquiring  Person Legend.  Any Rights  Certificate  issued  pursuant to
Section 3(a)  (Issuance of Rights  Certificates  --  Distribution  Date;  Rights
Certificates)  or  Section  22  (Issuance  of  New  Rights   Certificates)  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  Acquiring  Person  has any  continuing  agreement,
arrangement or understanding  regarding the transferred Rights or (B) a transfer
which is part of a plan,  arrangement  or  understanding  which has as a primary
purpose or effect avoidance of Section 7(e) (Exercise of Rights; Purchase Price;
Expiration Date of Rights -- Termination of Acquiring  Person's  Rights) and any
Rights Certificate issued pursuant to Section 6 (Transfer, Split Up, Combination
and Exchange of Rights Certificates; Mutilated, Destroyed, Lost or Stolen Rights
Certificates),  Section 11  (Adjustment  of Purchase  Price;  Number and Kind of
Shares or Number of Rights) or Section 22 (Issuance of New Rights  Certificates)
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 dated as of February 19, 1999, by and
          between AAON, Inc. and Progressive Transfer Company, as Rights Agent).
          Accordingly, this Rights Certificate and the Rights represented hereby
          may become  null and void in the  circumstances  specified  in Section
          7(e) (Exercise of Rights; Purchase Price; Expiration Date of Rights --
          Termination of Acquiring Person's Rights) of such Agreement.

<PAGE 10>

     Section 5. Countersignature and Registration.

     (a) Signatures.  The Rights Certificates shall be executed on behalf of the
Company by its  Chairman  of the Board,  its  President  or any Vice  President,
either  manually or by facsimile  signature,  and shall have affixed thereto the
Company's  seal  or a  facsimile  thereof  which  shall  be  attested  to by the
Secretary  or an  Assistant  Secretary  of the  Company,  either  manually or by
facsimile  signature.  The Rights  Certificates  shall be  countersigned  by the
Rights Agent, either manually or by facsimile signature,  and shall not be valid
for any purpose unless so 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
Certificates  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.

<PAGE 11>

     (b) Registration and Transfer.  Following the Distribution Date, the Rights
Agent  will  keep or  cause to be  kept,  at its  principal  office  or  offices
designated as the appropriate  place for surrender of Rights  Certificates  upon
exercise  or  transfer,  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)  Procedure.  Subject to the  provisions of Section 4(b) (Form of Rights
Certificates  -- Acquiring  Person  Legend),  Section 7(e)  (Exercise of Rights;
Purchase Price;  Expiration Date of Rights -- Termination of Acquiring  Person's
Rights) and Section 14 (Fractional  Rights and Fractional  Shares),  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 Certificates
may  be  transferred,  split  up,  combined  or  exchanged  for  another  Rights
Certificate or Certificates,  entitling the registered holder to purchase a like
number of one  one-thousandths  of a share of Preferred  Stock (or,  following a
Triggering Event,  Common Stock, other securities,  cash or other assets, as the
case may be) as the Rights Certificate or Certificates  surrendered then entitle
such  holder (or  former  holder in the case of a  transfer)  to  purchase.  Any
registered holder desiring to transfer, split up, combine or exchange any Rights
Certificate or Certificates  shall make such request in writing delivered to the
Rights Agent,  and shall surrender the Rights  Certificate or Certificates to be
transferred,  split up, combined or exchanged at the principal office or offices
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 Section
4(b),  Section  7(e) and  Section  14,  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)  Issuance of New Rights  Certificates.  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
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 execute and deliver a new
Rights  Certificate of like tenor to the Rights Agent for  countersignature  and
delivery  to the  registered  owner in lieu of the Rights  Certificate  so lost,
stolen, destroyed or mutilated.

<PAGE 12>

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

     (a) Exercise.  Subject to Section 7(e) (Exercise of Rights; Purchase Price;
Expiration  Date of Rights -- Termination  of Acquiring  Person's  Rights),  the
registered  holder of any Rights  Certificate may exercise the Rights  evidenced
thereby (except as otherwise provided herein, including, without limitation, the
restrictions  on  exercisability  set forth in  Section  9(c)  (Reservation  and
Availability of Capital Stock -- Registration under the Act), Section 11(a)(iii)
(Adjustment of Purchase Price;  Number and Kind of Shares or Number of Rights --
Certain Adjustments),  Section 23(a) (Redemption and Termination -- Redemption),
and Section 24(b)  (Exchange -- Effect of Exchange;  Procedure))  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 and the  certificate  on the
reverse side thereof duly executed,  to the Rights Agent at the principal office
or  offices of the Rights  Agent  designated  for such  purpose,  together  with
payment of the aggregate  Purchase Price with respect to the total number of one
one-thousandths  of a share of  Preferred  Stock (or other  securities,  cash or
other assets,  as the case may be) as to which such surrendered  Rights are then
exercisable  and an amount equal to any applicable  transfer tax, at or prior to
the earliest of (i) the Final  Expiration  Date,  (ii) the  Redemption  Date, or
(iii) the  expiration of the Rights  pursuant to Section  13(d)  (Consolidation,
Merger or Sale or  Transfer  of  Assets or  Earning  Power --  Exceptions)  (the
earliest of (i),  (ii) and (iii)  being  herein  referred to as the  "Expiration
Date").  The payment of the Purchase Price and the  applicable  transfer tax, if
any (as such amount may be reduced pursuant to Section 11(a)(iii) (Adjustment of
Purchase  Price;  Number  and Kind of Shares  or  Number  of  Rights --  Certain
Adjustments)),  may be made (x) in cash, (y) by certified check, cashier's check
or money  order  payable to the order of the  Company,  or (z) by  delivery of a
certificate or  certificates  (with  appropriate  stock powers executed in blank
attached  thereto)  evidencing  a number of shares of Common  Stock equal to the
then  Purchase  Price divided by the closing  price (as  determined  pursuant to
Section 11(d) (Adjustment of Purchase Price; Number and Kind of Shares or Number
of Rights -- Current Market Price)) per share of Common Stock on the Trading Day
immediately  preceding the date of such exercise.  In the event that the Company
is obligated to issue other securities  (including Common Stock) of the Company,
pay cash and/or  distribute other property pursuant to Section 11(a) 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.  The Company  reserves the right to require prior to the occurrence
of a Triggering  Event that upon any  exercise of Rights,  a number of Rights be
exercised so that only whole shares of Preferred Stock would be issued.

<PAGE 13>

     (b) Purchase  Price.  The Purchase Price for each one  one-thousandth  of a
share of Preferred  Stock pursuant to the exercise of a Right shall initially be
$60.00,  and shall be subject to  adjustment  from time to time as  provided  in
Section 11 (Adjustment of Purchase Price; Number and Kind of Shares or Number of
Rights) and Section 13(a)  (Consolidation,  Merger or Sale or Transfer of Assets
or Earning  Power -- Flip-over  Event) and shall be payable in  accordance  with
paragraph (a) of this Section 7.

     (c) Rights Agent Actions. Upon receipt of a Rights Certificate representing
exercisable  Rights and the compliance by the holder of such Rights  Certificate
with paragraph (a) of this Section 7, the Rights Agent shall, subject to Section
20(k) (Duties of Rights Agent -- Exercise of Rights; Consultation with Company),
thereupon  promptly (i) (A) requisition from any transfer agent of the shares of
Preferred  Stock (or make  available,  if the Rights Agent is the transfer agent
for such shares)  certificates for the total number of one  one-thousandths of a
share of Preferred  Stock 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 shares of Preferred
Stock issuable upon exercise of the Rights  hereunder  with a depositary  agent,
requisition  from the depositary  agent depositary  receipts  representing  such
number  of one  one-thousandths  of a  share  of  Preferred  Stock  as are to be
purchased  (in  which  case  certificates  for the  shares  of  Preferred  Stock
represented  by such receipts  shall be deposited by the transfer agent with the
depositary  agent) and the Company  will direct the  depositary  agent to comply
with such request, (ii) requisition from the Company the amount of cash, if any,
to be  paid  in  lieu  of  fractional  shares  in  accordance  with  Section  14
(Fractional Rights and Fractional Shares), (iii) after receipt thereof,  deliver
such certificates or depositary  receipts 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) after receipt thereof, deliver such cash, if
any, to or upon the order of the registered holder of such Rights Certificate.

     (d)  Partial  Exercise.  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 and  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,  subject to the provisions of
Section 14 (Fractional Rights and Fractional Shares).

     (e) Termination of Acquiring Person's Rights.  Notwithstanding  anything in
this Agreement to the contrary, from and after the first occurrence of a Flip-in
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 such
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  the  Acquiring  Person  has any  continuing  agreement,
arrangement or understanding  regarding the transferred Rights or (B) a transfer
which is part of a plan,  arrangement  or  understanding  which has as a primary
purpose or effect the avoidance of this Section 7(e), 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)  (Form of Rights
Certificates  -- Acquiring  Person  Legend) are complied with, but shall have no
liability  to any holder of Rights  Certificates  or other Person as a result of
its failure to make any  determinations  with respect to an Acquiring  Person or
any of its respective Affiliates, Associates or transferees hereunder.

<PAGE 14>

     (f)  Surrender  of  Rights  Certificates;  Identity  of  Beneficial  Owner.
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 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 Capital Stock.

     (a) Reservation of Capital Stock.  The Company will use its best efforts to
reserve  and  keep  available  out of its  authorized  and  unissued  shares  of
Preferred Stock (and, following the occurrence of a Triggering Event, out of its
authorized and unissued shares of Common Stock and/or other securities or out of
its  authorized  and issued  shares of Common Stock held in its  treasury),  the
number of  shares  of  Preferred  Stock  (and,  following  the  occurrence  of a
Triggering  Event,  Common Stock and/or other  securities)  that, as provided in
this  Agreement,  including the rights of the Company  under Section  11(a)(iii)
(Adjustment of Purchase Price;  Number and Kind of Shares or Number of Rights --
Certain Adjustments) to otherwise fulfill its obligations, will be sufficient to
permit the exercise in full of all outstanding Rights.

<PAGE 15>

     (b) Listing.  So long as the shares of Preferred Stock (and,  following the
occurrence of a Triggering Event, Common Stock and/or other securities) issuable
and  deliverable  upon the  exercise of the Rights may be listed on any national
securities  exchange or authorized  for quotation on any  interdealer  quotation
system of any securities association,  the Company shall use its best efforts to
cause,  from and after such time as the Rights  become  exercisable,  all shares
reserved  for such  issuance  to be  listed on such  exchange  or quoted on such
system upon official notice of issuance upon such exercise.

     (c)  Registration  under the Act.  The Company will use its best efforts to
(i) file,  as soon as  practicable  following  the earliest date after the first
occurrence of a Flip-in Event on which the  consideration to be delivered by the
Company  upon  exercise of the Rights has been  determined  in  accordance  with
Section 11(a)(iii)  (Adjustment of Purchase Price;  Number and Kind of Shares or
Number of Rights  --  Certain  Adjustments),  or as soon as is  required  by law
following the Distribution Date, as the case may be, a registration statement on
an  appropriate  form under the Act with respect to the  securities  purchasable
upon exercise of the Rights,  (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 Act) until the  earlier of (A) the date as of
which the  Rights are no longer  exercisable  for such  securities,  and (B) the
Expiration  Date.  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. The Company
may temporarily suspend, for a period of time not to exceed ninety (90) calendar
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  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. In addition,
if the  Company  shall  determine  that a  registration  statement  is  required
following  the  Distribution  Date,  the  Company  may  temporarily  suspend the
exercisability  of the Rights until such time as a  registration  statement  has
been declared effective.  Notwithstanding any provision of this Agreement to the
contrary,  the  Rights  shall  not be  exercisable  in any  jurisdiction  if the
requisite  qualification in such jurisdiction shall not have been obtained,  the
exercise  thereof shall not be permitted under  applicable law or a registration
statement shall not have been declared effective.

<PAGE 16>

     (d) Covenant Regarding Capital Stock. The Company will take all such action
as may be  necessary  to  ensure  that  all one  one-thousandths  of a share  of
Preferred  Stock (and,  following the occurrence of a Triggering  Event,  Common
Stock and/or other  securities)  delivered upon exercise of Rights shall, at the
time of delivery of the  certificates for such shares (subject to payment of the
Purchase  Price),  be duly and validly  authorized and issued and fully paid and
nonassessable.

     (e) Transfer  Taxes and Charges.  The Company will pay when due and payable
any and all federal and state transfer taxes and charges which may be payable in
respect  of the  issuance  or  delivery  of the Rights  Certificates  and of any
certificates for a number of one  one-thousandths  of a share of Preferred Stock
(or Common Stock and/or other securities,  as the case may be) 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 a number of
one  one-thousandths of a share of Preferred Stock (or Common Stock and/or other
securities,  as the case may be) in respect of a name  other  than,  that of the
registered holder of the Rights  Certificates  evidencing Rights surrendered for
exercise  or  to  issue  or  deliver  any  certificates  for  a  number  of  one
one-thousandths  of a share of  Preferred  Stock (or Common  Stock  and/or other
securities,  as the case may be) in a name  other  than  that of the  registered
holder upon the  exercise of any Rights until 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.

     Section 10.  Preferred  Stock  Record  Date.  Each Person in whose name any
certificate  for a number of one  one-thousandths  of a share of Preferred Stock
(or Common Stock and/or other securities, as the case may be) is issued upon the
exercise of Rights shall for all purposes be deemed to have become the holder of
record of such  fractional  shares of  Preferred  Stock (or Common  Stock and/or
other  securities,  as the  case  may  be)  represented  thereby  on,  and  such
certificate  shall be dated as of, the date upon  which the  Rights  Certificate
evidencing  such Rights was duly  surrendered  and payment of the Purchase Price
(and all applicable  transfer taxes) was made;  provided,  however,  that if the
date of such surrender and payment is a date upon which the Preferred  Stock (or
Common Stock and/or other securities,  as the case may be) transfer books of the
Company are closed, such Person shall be deemed to have become the record holder
of such shares  (fractional  or  otherwise)  on, and such  certificate  shall be
dated, the next succeeding  Business Day on which the Preferred Stock (or Common
Stock and/or other securities, as the case may be) 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 stockholder of the
Company  with  respect  to 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.

<PAGE 17>

     Section  11.  Adjustment  of Purchase  Price;  Number and Kind of Shares or
Number of Rights.  The Purchase Price,  the number and kind of shares 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) Certain Adjustments.

               (i) In the event the Company  shall at any time after the date of
          this  Agreement (A) declare a dividend on the Preferred  Stock payable
          in shares of Preferred  Stock,  (B) subdivide or split the outstanding
          Preferred  Stock,  (C) combine the outstanding  Preferred Stock into a
          smaller number of shares, or (D) issue any shares of its capital stock
          in a  reclassification  of the  Preferred  Stock  (including  any such
          reclassification in connection with a consolidation or merger in which
          the Company is the  continuing  or surviving  corporation),  except as
          otherwise provided in this Section 11(a) and Section 7(e) (Exercise of
          Rights;  Purchase  Price;  Expiration Date of Rights -- Termination of
          Acquiring  Person's Rights),  the Purchase Price in effect at the time
          of the record date for such dividend or of the effective  date of such
          subdivision,  split,  combination or reclassification,  and the number
          and kind of shares of Preferred  Stock or capital  stock,  as the case
          may be, issuable on such date,  shall be  proportionately  adjusted so
          that the  holder  of any Right  exercised  after  such  time  shall be
          entitled to receive,  upon payment of the aggregate  adjusted Purchase
          Price  then in  effect  necessary  to  exercise  a Right in full,  the
          aggregate  number  and kind of shares of  Preferred  Stock or  capital
          stock,  as the case may be,  which,  if such Right had been  exercised
          immediately  prior to such date and at a time when the Preferred Stock
          (or other  capital  stock,  as the case may be) transfer  books of the
          Company were open, such holder would have owned upon such exercise and
          been  entitled  to  receive by virtue of such  dividend,  subdivision,
          split, combination or reclassification. If an event occurs which would
          require an  adjustment  under both this  Section  11(a)(i) and Section
          11(a)(ii) 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).

               (ii) In the event:

                    (A) (1) any  Acquiring  Person or any Associate or Affiliate
               of any  Acquiring  Person,  at any  time  after  the date of this
               Agreement,  directly or indirectly,  shall merge into the Company
               or otherwise  combine  with the Company and the Company  shall be
               the  continuing  or  surviving  corporation  of  such  merger  or
               combination  and the Common  Stock of the  Company  shall  remain
               outstanding   and  unchanged,   or  (2)  subject  to  Section  23
               (Redemption and Termination), 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),  alone or together  with
               its  Affiliates  and  Associates,  shall,  at any time  after the
               Rights Dividend  Declaration  Date,  become an Acquiring  Person,
               unless  the event  causing  such  Person  to become an  Acquiring
               Person is a Flip-over  Event,  or is an  acquisition of shares of
               Common Stock  pursuant to a tender offer or an exchange offer for
               all  outstanding  shares of Common  Stock at a price and on terms
               determined  by the  Board  of  Directors,  prior  to  the  public
               announcement  of such  tender  offer  or  exchange  offer,  after
               receiving  advice  from  one or  more  investment  banking  firms
               selected by the Board of Directors, to be (a) at a price which is
               fair to the  stockholders of the Company (taking into account all
               factors  which the Board of Directors  deem  relevant  including,
               without limitation,  prices which could reasonably be achieved if
               the Company or its assets were sold on an orderly basis  designed
               to realize maximum value) and (b) otherwise in the best interests
               of the Company and its  stockholders,  other than such  Acquiring
               Person, its Affiliates and its Associates; or

                    (B) during such time as there is an Acquiring Person,  there
               shall  be  any  reclassification  of  securities  (including  any
               reverse stock split), or  recapitalization of the Company, or any
               merger  or   consolidation   of  the  Company  with  any  of  its
               Subsidiaries  or any other  transaction or series of transactions
               involving  the Company or any of its  Subsidiaries,  other than a
               transaction  or  transactions  to which the provisions of Section
               13(a)  (Consolidation,  Merger or Sale or  Transfer  of Assets or
               Earning Power -- Flip-over  Event) apply  (whether or not with or
               into or otherwise  involving an Acquiring  Person)  which has the
               effect, directly or indirectly, of increasing by more than 1% the
               proportionate  share of the  outstanding  shares  of any class of
               equity securities of the Company or any of its subsidiaries which
               is directly or  indirectly  beneficially  owned by any  Acquiring
               Person or any Associate or Affiliate of any Acquiring Person,

         then,  promptly  following  the  occurrence  of any such Flip-in  Event
         (whether  described in Section  11(a)(ii)(A) or (B)),  proper provision
         shall be made so that each holder of a Right (except as provided  below
         and in Section 7(e)  (Exercise of Rights;  Purchase  Price;  Expiration
         Date of Rights --  Termination  of Acquiring  Person's  Rights))  shall
         thereafter have the right to receive, upon exercise thereof at the then
         current  Purchase Price in accordance with the terms of this Agreement,
         in lieu of the number of one  one-thousandths  of a share of  Preferred
         Stock,  such  number of shares of Common  Stock of the Company as shall
         equal the result obtained by (x) multiplying the then current  Purchase
         Price by the then number of one one-thousandths of a share of Preferred
         Stock for which a Right was exercisable  immediately prior to the first
         occurrence of a Flip-in  Event,  and (y) dividing that product  (which,
         following such first occurrence, shall thereafter be referred to as the
         "Purchase Price" for each Right and for all purposes of this Agreement)
         by 50% of the  Current  Market  Price per share of Common  Stock on the
         date of such first  occurrence (such number of shares being referred to
         as the "Adjustment Shares").

                    (iii) In the event that the number of shares of Common Stock
               that are  authorized by the Company's  Articles of  Incorporation
               but not  outstanding  or reserved for issuance for purposes other
               than upon exercise of the Rights is not  sufficient to permit the
               exercise in full of the Rights in  accordance  with the foregoing
               subparagraph  (ii) of this Section 11(a),  the Company shall: (A)
               determine  the excess of (1) the value of the  Adjustment  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,  subject  to  Section  7(e)(Exercise  of
               Rights;  Purchase Price; Expiration Date of Rights -- Termination
               of  Acquiring  Person's  Rights),   make  adequate  provision  to
               substitute  for  the  Adjustment  Shares,  upon  payment  of  the
               applicable  Purchase  Price,  (1) cash,  (2) a  reduction  in the
               Purchase  Price,  (3) Common Stock or other equity  securities of
               the Company (including,  without limitation,  shares, or units of
               shares,  of  preferred  stock  which the Board has deemed to have
               essentially the same value or economic rights as shares of Common
               Stock  (such  shares of  preferred  stock  being  referred  to as
               "Common Stock Equivalents")), (4) debt securities of the Company,
               (5) other assets, or (6) any combination of the foregoing, having
               an aggregate value equal to the Current Value (less the amount of
               any reduction in the Purchase Price),  where such aggregate value
               has been  determined  by the  Board  based  upon the  advice of a
               nationally  recognized  investment  banking firm  selected by the
               Board; provided, however, that if the Company shall not have made
               adequate  provision to deliver value pursuant to clause (B) above
               within thirty (30) calendar days  following the first  occurrence
               of a Flip-in Event (the date of such Flip-In Event being referred
               to herein as the "Flip-in 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, shares
               of Common Stock (to the extent available) and then, if necessary,
               cash,  which shares and/or cash have an aggregate  value equal to
               the Spread. If the Board shall determine in good faith that it is
               likely that sufficient additional shares of Common Stock or other
               equity  securities could be authorized for issuance upon exercise
               in full of the Rights,  the thirty (30)  calendar  day period set
               forth above may be extended to the extent necessary, but not more
               than ninety (90) calendar days after the Flip-in Trigger Date, in
               order that the  Company  may seek  stockholder  approval  for the
               authorization  of  such  additional  shares  (such  period,   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)(iii),  the Company (x)
               shall  provide,  subject to Section 7(e),  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  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)(iii), the
               value of the Common  Stock shall be the Current  Market Price per
               share of the Common  Stock on the  Flip-in  Trigger  Date and the
               value of any Common Stock  Equivalent shall be deemed to have the
               same value as the Common Stock on such date.

                    (iv)  If the  rules  of the  national  securities  exchange,
               registered  as such pursuant to Section 6 of the Exchange Act, or
               of  the  national  securities  association,  registered  as  such
               pursuant to Section 15A of the Exchange  Act, on which the Common
               Stock  is  principally  traded  or  quoted  would  prohibit  such
               exchange or  association  from listing or  continuing to list, or
               from authorizing for or continuing  quotation and/or  transaction
               reporting through an inter-dealer  quotation  system,  the Common
               Stock or other  equity  securities  of the  Company if the Rights
               were to be  exercised  for shares of Common  Stock in  accordance
               with  subparagraph  (ii)  of  this  Section  11(a)  because  such
               issuance  would nullify,  restrict or disparately  reduce the per
               share  voting  rights of holders  of Common  Stock,  the  Company
               shall:  (A)  determine  the Spread,  and (B) with respect to each
               Right,  make adequate  provision to substitute for the Adjustment
               Shares,  upon payment of the applicable Purchase Price, (1) cash,
               (2) a reduction in the Purchase Price,  (3) equity  securities of
               the  Company,   including,   without  limitation,   Common  Stock
               Equivalents, other than securities which would have the effect of
               nullifying,  restricting  or  disparately  reducing the per share
               voting rights of holders of Common Stock,  (4) debt securities of
               the Company,  (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 based
               upon the advice of a recognized  investment banking firm selected
               by the Board;  provided,  however,  if the Company shall not have
               made adequate  provision to deliver value  pursuant to clause (B)
               above within  thirty (30)  calendar  days  following  the Flip-in
               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,  cash having an  aggregate  value
               equal to the Spread.  To the extent  that the Company  determines
               that some action need be taken  pursuant to the first sentence of
               this Section 11(a)(iv), the Company (x) shall provide, subject to
               Section 7(e) (Exercise of Rights; Purchase Price; Expiration Date
               of Rights -- Termination of Acquiring Person's Rights), that such
               action shall apply  uniformly to all  outstanding  Rights and (y)
               may suspend the exercisability of the Rights, but not longer than
               ninety (90)  calendar  days after the Flip-in  Trigger  Date,  in
               order 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  Stock shall be the Current  Market Price per share of the
               Common  Stock on the  Flip-in  Trigger  Date and the value of any
               Common Stock Equivalent shall be deemed to have the same value as
               the Common Stock on such date.

<PAGE 21>

     (b) Purchase Price  Adjustment -- Capital Stock.  In case the Company shall
fix a record date for the issuance of rights, options or warrants to all holders
of Preferred  Stock  entitling  them to subscribe  for or purchase (for a period
expiring within  forty-five (45) calendar days after such record date) Preferred
Stock (or shares  having the same  rights,  privileges  and  preferences  as the
shares  of  Preferred  Stock  ("Equivalent   Preferred  Stock"))  or  securities
convertible  into Preferred  Stock or Equivalent  Preferred Stock at a price per
share of Preferred Stock or per share of Equivalent Preferred Stock (or having a
conversion  price per share, if a security  convertible  into Preferred Stock or
Equivalent  Preferred  Stock)  less than the Current  Market  Price per share of
Preferred  Stock on such record date,  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 number of shares of  Preferred  Stock  outstanding  on such  record
date, plus the number of shares of Preferred Stock which the aggregate  offering
price of the  total  number  of  shares of  Preferred  Stock  and/or  Equivalent
Preferred Stock 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 shares of
Preferred  Stock  outstanding on such record date, plus the number of additional
shares of Preferred  Stock and/or  Equivalent  Preferred Stock 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
by  delivery of  consideration  part or all of which may be in a form other than
cash,  the value of such  consideration  shall be as determined in good faith by
the Board, 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.  Shares  of  Preferred  Stock  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 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) Purchase  Price  Adjustment -- Cash,  Assets,  etc. In case the Company
shall fix a record date for a  distribution  to all holders of  Preferred  Stock
(including any such  distribution  made in connection  with a  consolidation  or
merger in which the  Company is the  continuing  corporation)  of  evidences  of
indebtedness,  cash (other than a regular  quarterly  cash  dividend  out of the
earnings or retained  earnings of the  Company),  assets  (other than a dividend
payable in Preferred  Stock,  but including any dividend  payable in stock other
than  Preferred  Stock) or  subscription  rights or  warrants  (excluding  those
referred to in Section 11(b)  (Adjustment of Purchase Price;  Number and Kind of
Shares or Number of Rights  Purchase Price  Adjustment -- Capital  Stock)),  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 per
share of  Preferred  Stock on such record  date,  less the fair market value (as
determined in good faith by the Board, 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 share of Preferred  Stock and the denominator of which
shall  be  such  Current  Market  Price  per  share  of  Preferred  Stock.  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.

<PAGE 22>

     (d) Current Market Price.

               (i) For the  purpose  of any  computation  hereunder,  other than
          computations  made  pursuant  to  Section  11(a)(iii)  (Adjustment  of
          Purchase  Price;  Number  and Kind of  Shares  or  Number of Rights --
          Certain  Adjustments)  the  Current  Market  Price per share of Common
          Stock on any date  shall be  deemed  to be the  average  of the  daily
          closing  prices per share of such  Common  Stock for the  thirty  (30)
          consecutive  Trading  Days  immediately  prior to such  date,  and for
          purposes  of  computations  made  pursuant to Section  11(a)(iii)  the
          Current  Market  Price per share of Common  Stock on any date shall be
          deemed to be the average of the daily closing prices per share of such
          Common Stock for the ten (10)  consecutive  Trading  Days  immediately
          following  such date;  provided,  however,  that in the event that the
          Current  Market  Price per  share of the  Common  Stock is  determined
          during a period  following  the  announcement  by the  issuer  of such
          Common  Stock of (A) a dividend or  distribution  on such Common Stock
          payable in shares of such Common Stock or securities  convertible into
          shares  of such  Common  Stock  (other  than the  Rights),  or (B) any
          subdivision,  combination or reclassification of such Common Stock and
          the ex-dividend date for such dividend or distribution,  or the record
          date for such subdivision,  combination or reclassification  shall not
          have occurred prior to the  commencement of the requisite  thirty (30)
          Trading Day or ten (10) Trading Day period, as set forth above,  then,
          and in each such case,  the  Current  Market  Price  shall be properly
          adjusted to take into account ex-dividend  trading.  The closing price
          for each Trading Day shall be the last sale price, regular way, or, in
          case no such sale takes place on such  Trading 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  shares of Common  Stock are 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 shares of Common Stock are listed or admitted to trading or,
          if the shares of Common Stock are not listed or admitted to trading on
          any national securities exchange,  the last quoted price or, if not so
          quoted,  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  Quotation  System or such other
          system then in use, or, if on any such date the shares of Common Stock
          are 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 Common Stock  selected by the Board.  If on any
          such date no market maker is making a market in the Common Stock,  the
          fair value of such shares on such date as  determined in good faith by
          the Board shall be used.  The term  "Trading  Day" shall mean a day on
          which the principal national  securities  exchange on which the shares
          of Common  Stock are  listed or  admitted  to  trading is open for the
          transaction  of  business  or, if the  shares of Common  Stock are not
          listed or admitted to trading on any national securities  exchange,  a
          Business  Day.  If the  Common  Stock is not  publicly  held or not so
          listed or traded,  Current  Market Price per share shall mean the fair
          value  per  share as  determined  in good  faith by the  Board,  whose
          determination  shall be described in a statement filed with the Rights
          Agent and shall be conclusive for all purposes.

               (ii) For the purpose of any  computation  hereunder,  the Current
          Market Price per share of Preferred  Stock shall be  determined in the
          same manner as set forth  above for the Common  Stock in clause (i) of
          this Section  11(d)  (other than the last  sentence  thereof).  If the
          Current Market Price per share of Preferred Stock cannot be determined
          in the manner provided above or if the Preferred Stock is not publicly
          held or listed or traded in a manner  described  in clause (i) of this
          Section 11(d),  the Current Market Price per share of Preferred  Stock
          shall be  conclusively  deemed to be an amount equal to 1,000 (as such
          number may be appropriately  adjusted for such events as stock splits,
          stock dividends and recapitalizations with respect to the Common Stock
          occurring after the date of this Agreement)  multiplied by the Current
          Market  Price per share of the Common  Stock.  If  neither  the Common
          Stock nor the Preferred Stock is publicly held or so listed or traded,
          Current  Market Price per share of the Preferred  Stock shall mean the
          fair value per share as determined  in good faith by the Board,  whose
          determination  shall be described in a statement filed with the Rights
          Agent and shall be conclusive  for all  purposes.  For all purposes of
          this Agreement,  the Current Market Price of one  one-thousandth  of a
          share of Preferred Stock shall be equal to the Current Market Price of
          one share of Preferred Stock divided by 1,000.

<PAGE 23>

     (e) Purchase Price  Adjustment  Threshold.  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 one percent
(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 (Adjustment of Purchase  Price;  Number and Kind of Shares
or  Number  of  Rights)  shall  be made to the  nearest  cent or to the  nearest
thousandth of a share of Common Stock or other share or one-millionth of a share
of Preferred  Stock, 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 mandates such adjustment, or (ii) the Expiration Date.

<PAGE 24>

     (f) Equivalent  Adjustments.  If as a result of an adjustment made pursuant
to Section 11(a)(ii) (Adjustment of Purchase Price; Number and Kind of Shares or
Number of Rights -- Certain Adjustments) or Section 13(a) (Consolidation  Merger
or Sale or Transfer of Assets or Earning Power -- Flip-over Event) the holder of
any Right  thereafter  exercised  shall become entitled to receive any shares of
capital stock other than  Preferred  Stock,  thereafter the number of such other
shares so receivable  upon exercise of any Right and 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 Preferred
Stock  contained in Sections  11(a),  (b), (c), (e), (g), (h), (i), (j), (k) and
(m),  and the  provisions  of Sections  7, 9, 10, 13 and 14 with  respect to the
Preferred Stock shall apply on like terms to any such other shares.

     (g) Post-Adjustment  Rights Issuances.  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  one-thousandths of a share of Preferred Stock purchasable from time to time
hereunder  upon  exercise of the Rights,  all subject to further  adjustment  as
provided herein.

     (h) Preferred Stock Anti-Dilution.  Unless the Company shall have exercised
its election as provided in Section 11(i) (Adjustment of Purchase Price;  Number
and Kind of Shares or Number of Rights -- Adjustment of Number of Rights),  upon
each  adjustment of the Purchase Price as a result of the  calculations  made in
Section 11(b) (Adjustment of Purchase Price; Number and Kind of Shares or Number
of Rights -- Purchase  Price  Adjustment  -- Capital  Stock) and  Section  11(c)
(Adjustment of Purchase Price;  Number and Kind of Shares or Number of Rights --
Purchase  Price  Adjustment  -- Cash,  Assets,  etc.),  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  one
one-thousandths  of a  share  of  Preferred  Stock  (calculated  to the  nearest
one-millionth) obtained by (i) multiplying (x) the number of one one-thousandths
of a share 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)  Adjustment of Number of Rights.  The Company may elect on or after the
date of any adjustment of the Purchase Price to adjust the number of Rights,  in
lieu of any  adjustment  in the  number  of one  one-thousandths  of a share  of
Preferred  Stock  purchasable  upon the exercise of a Right.  Each of the Rights
outstanding  after the  adjustment in the number of Rights shall be  exercisable
for the number of one  one-thousandths of a share of Preferred Stock 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  one-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)
calendar  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 (Fractional
Rights and Fractional  Shares) 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  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.

<PAGE 25>

     (j) Rights  Certificates.  Irrespective  of any adjustment or change in the
Purchase  Price or the  number of one  one-thousandths  of a share of  Preferred
Stock  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 share and the number of one  one-thousandths of a share
which were expressed in the initial Rights Certificates issued hereunder.

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

     (l) Adjustment Effective as of Future Date; Exercise.  In any case in which
this  Section 11  (Adjustment  of Purchase  Price;  Number and Kind of Shares or
Number of Rights) 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 issuance to the holder of any Right
exercised after such record date the number of one one-thousandths of a share of
Preferred  Stock and other capital  stock or securities of the Company,  if any,
issuable upon such exercise over and above the number of one  one-thousandths of
a share of Preferred Stock 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) or securities
upon the occurrence of the event requiring such adjustment.

<PAGE 26>

     (m) Tax  Adjustments.  Anything in this Section 11  (Adjustment of Purchase
Price;  Number  and  Kind  of  Shares  or  Number  of  Rights)  to the  contrary
notwithstanding,  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 in its good faith judgment the Board shall
determine to be advisable in order that any (i)  consolidation or subdivision of
the Preferred  Stock,  (ii) issuance  wholly for cash of any shares of Preferred
Stock at less than the Current Market Price,  (iii) issuance  wholly for cash of
shares of Preferred  Stock or  securities  which by their terms are  convertible
into or exchangeable for shares of Preferred Stock,  (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  Stock shall not be
taxable to such stockholders.

     (n) Restriction on Certain Transactions. The Company shall not, at any time
after the earlier of the Stock  Acquisition Date or the  Distribution  Date, (i)
consolidate  with any other Person  (other than a Subsidiary of the Company in a
transaction  which complies with Section 11(o)  (Adjustment  of Purchase  Price;
Number and Kind of Shares or Number of Rights -- Restriction Against Diminishing
Benefits of the Rights)), (ii) merge with or into any other Person (other than a
Subsidiary of the Company in a transaction  which complies with Section  11(o)),
(iii) enter into a statutory  share  exchange  or similar  transaction  with any
other Person  (other than a  Subsidiary  of the Company in a  transaction  which
complies with Section 11(o)), or (iv) sell or transfer (or permit any Subsidiary
to sell or transfer),  in one transaction,  or a series of related transactions,
assets, cash flow or earning power aggregating more than 50% of the assets, cash
flow or earning power of the Company and its Subsidiaries  (taken as a whole) to
any  other  Person  or  Persons  (other  than  the  Company  and/or  any  of its
Subsidiaries  in one or more  transactions  each of which  complies with Section
11(o)), if (x) at the time of or immediately after such  consolidation,  merger,
statutory share exchange or similar  transaction,  or sale there are any rights,
warrants or other instruments or securities  outstanding or agreements in effect
which would substantially  diminish or otherwise eliminate the benefits intended
to be afforded by the Rights or (y) prior to, simultaneously with or immediately
after  such   consolidation,   merger,   statutory  share  exchange  or  similar
transaction,  or sale, the stockholders of the Person who constitutes,  or would
constitute,  the "Principal Party" for purposes of Section 13(a) (Consolidation,
Merger or Sale or Transfer of Assets or Earning Power -- Flip-over  Event) shall
have received a distribution of Rights previously owned by such Person or any of
its Affiliates and Associates.

<PAGE 27>

     (o) Restriction  Against  Diminishing  Benefits of the Rights.  The Company
covenants and agrees that,  after the earlier of the Stock  Acquisition  Date or
the  Distribution  Date,  it  will  not,  except  as  permitted  by  Section  23
(Redemption and Termination) or Section 27 (Supplements and Amendments) take (or
permit any Subsidiary to take) 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) Common Stock  Adjustments.  Anything in this  Agreement to the contrary
notwithstanding,  in the  event  that the  Company  shall at any time  after the
Rights Dividend  Declaration Date and prior to the Distribution Date (i) declare
a dividend on the outstanding shares of Common Stock payable in shares of Common
Stock, (ii) subdivide or split the outstanding  shares of Common Stock, or (iii)
combine the outstanding  shares of Common Stock into a smaller number of shares,
the  number  of  Rights   associated  with  each  share  of  Common  Stock  then
outstanding,  or issued or delivered  thereafter  but prior to the  Distribution
Date, shall be proportionately  adjusted so that the number of Rights thereafter
associated  with each share of Common Stock following any such event shall equal
the result  obtained by multiplying  the number of Rights  associated  with each
share of  Common  Stock  immediately  prior to such  event  by a  fraction,  the
numerator  of which  shall  be the  total  number  of  shares  of  Common  Stock
outstanding immediately prior to the occurrence of the event and the denominator
of which  shall be the  total  number of  shares  of  Common  Stock  outstanding
immediately following the occurrence of such event. The adjustments provided for
in this Section  11(p) shall be made  successively  whenever  such a dividend is
declared or paid or such subdivision, combination or consolidation is effected.

     Section 12.  Certificate  of Adjusted  Purchase  Price or Number of Shares.
Whenever an adjustment is made as provided in Section 11 (Adjustment of Purchase
Price;  Number  and  Kind  of  Shares  or  Number  of  Rights)  and  Section  13
(Consolidation,  Merger or Sale or  Transfer  of Assets or  Earning  Power)  the
Company shall (a) promptly  prepare a certificate  setting forth such adjustment
and a brief statement of the facts accounting for such adjustment,  (b) promptly
file with the Rights Agent, and with each transfer agent for the Preferred Stock
and the  Common  Stock,  a copy of such  certificate,  and (c) mail or cause the
Rights  Agent  to mail a  brief  summary  thereof  to each  holder  of a  Rights
Certificate  (or,  if  prior  to the  Distribution  Date,  to each  holder  of a
certificate  representing  shares of Common Stock) in accordance with Section 26
(Notices).  The Rights  Agent  shall be fully  protected  in relying on any such
certificate and on any adjustment therein contained.

<PAGE 28>

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

     (a) Flip-over  Event.  In the event that,  following the Stock  Acquisition
Date,  directly or indirectly,  (x) the Company shall consolidate with, or merge
with and into, or enter into a statutory  stock exchange or similar  transaction
with,  any other Person (other than a Subsidiary of the Company in a transaction
which complies with Section  11(o)(Adjustment of Purchase Price; Number and Kind
of Shares or Number of Rights -- Restriction Against Diminishing Benefits of the
Rights)),  and the Company shall not be the continuing or surviving  corporation
of  such   consolidation,   merger  or  statutory   share  exchange  or  similar
transaction,  (y) any  Person  (other  than a  Subsidiary  of the  Company  in a
transaction  which complies with Section 11(o)) shall consolidate with, or merge
with or into, or enter into a statutory  stock  exchange or similar  transaction
with,  the  Company,  and the  Company  shall  be the  continuing  or  surviving
corporation of such consolidation, merger or statutory share exchange or similar
transaction  and, in  connection  with such  consolidation,  merger or statutory
share exchange or similar transaction,  all or part of the outstanding shares of
Common Stock shall be changed into or exchanged for stock or other securities of
any other Person or cash or any other property, or (z) the Company shall sell or
otherwise  transfer (or one or more of its Subsidiaries  shall sell or otherwise
transfer), in one transaction or a series of related transactions,  assets, cash
flow or earning  power  aggregating  more than 50% of the  assets,  cash flow or
earning  power of the  Company  and its  Subsidiaries  (taken as a whole) to any
Person or Persons  (other than the Company or any  Subsidiary  of the Company in
one or more transactions  each of which complies with Section 11(o)),  then, and
in  each  such  case   (except  as  may  be   contemplated   by  Section   13(d)
(Consolidation,  Merger  or Sale or  Transfer  of  Assets  or  Earning  Power --
Exceptions)),  (i)  proper  provision  shall be made so that:  each  holder of a
Right,  except as provided in Section 7(e) (Exercise of Rights;  Purchase Price;
Expiration  Date of Rights --  Termination of Acquiring  Person's  Rights) shall
thereafter  have the right to  receive,  upon the  exercise  thereof at the then
current  Purchase  Price in accordance  with the terms of this  Agreement,  such
number of validly  authorized and issued,  fully paid,  nonassessable and freely
tradeable  shares of Common  Stock of the  Principal  Party,  not subject to any
liens,  encumbrances,  rights of first refusal or other adverse claims, as shall
be equal to the result  obtained by (A)  multiplying  the then current  Purchase
Price by the number of one  one-thousandths  of a share of  Preferred  Stock for
which a Right is  exercisable  immediately  prior to the first  occurrence  of a
Flip-over  Event  (or,  if a  Flip-in  Event  has  occurred  prior to the  first
occurrence  of  a  Flip-over   Event,   multiplying   the  number  of  such  one
one-thousandths  of a share for which a Right was exercisable  immediately prior
to the first  occurrence  of a  Flip-in  Event by the  Purchase  Price in effect
immediately  prior to such first  occurrence),  and (B)  dividing  that  product
(which,  following the first occurrence of a Flip-over Event,  shall be referred
to as the  "Purchase  Price"  for  each  Right  and  for  all  purposes  of this
Agreement)  by 50% of the Current  Market Price per share of the Common Stock of
such Principal Party on the date of consummation of such Flip-over  Event;  (ii)
such Principal Party shall thereafter be liable for, and shall assume, by virtue
of such Flip-over  Event, all the obligations and duties of the Company pursuant
to this Agreement;  (iii) the term "Company" shall thereafter be deemed to refer
to such Principal Party, it being  specifically  intended that the provisions of
Section 11 (Adjustment of Purchase Price; Number and Kind of Shares or Number of
Rights) shall apply only to such Principal Party following the first  occurrence
of a Flip-  over  Event;  (iv)  such  Principal  Party  shall  take  such  steps
(including, but not limited to, the reservation of a sufficient number of shares
of its Common Stock) in connection with the consummation of any such transaction
as may be necessary to assure that the  provisions  hereof shall  thereafter  be
applicable,  as nearly as reasonably may be, in relation to its shares of Common
Stock  thereafter  deliverable  upon the  exercise  of the  Rights;  and (v) the
provisions of Section 11(a)(ii)  (Adjustment of Purchase Price;  Number and Kind
of Shares or Number of  Rights --  Certain  Adjustments)  hereof  shall be of no
effect following the first occurrence of any Flip-over Event.

<PAGE 29>

     (b) Principal Party. "Principal Party" shall mean

               (i) in the case of any transaction described in clause (x) or (y)
          of the first sentence of Section 13(a) (Consolidation,  Merger or Sale
          or Transfer of Assets or Earning Power -- Flip-over Event), the Person
          that is the issuer of any securities into which shares of Common Stock
          of  the  Company  are  converted  in  such  consolidation,  merger  or
          statutory share exchange or similar transaction,  and if no securities
          are  so  issued,   the  Person   that  is  the  other  party  to  such
          consolidation,   merger  or  statutory   share   exchange  or  similar
          transaction, and

               (ii) in the case of any  transaction  described  in clause (z) of
          the first sentence of Section 13(a) (Consolidation,  Merger or Sale or
          Transfer of Assets or Earning  Power -- Flip-over  Event),  the Person
          that is the party receiving the greatest  portion of the assets,  cash
          flow or earning  power  transferred  pursuant to such  transaction  or
          transactions;

provided, however, that in any such case, (1) if the Common Stock of such Person
is not at such time and has not been continuously over the preceding twelve (12)
month period registered under Section 12 of the Exchange Act, and such Person is
a direct or indirect  Subsidiary of another  Person the Common Stock of which is
and has been so registered,  "Principal Party" shall refer to such other Person;
and (2) in case such Person is a  Subsidiary,  directly or  indirectly,  of more
than one Person,  the Common Stocks of two or more of which are and have been so
registered,  "Principal  Party"  shall refer to whichever of such Persons is the
issuer of the total  outstanding  Common  Stock  having the  greatest  aggregate
market value.

     (c)  Supplemental  Agreement.  The Company shall not consummate a Flip-over
Event unless the  Principal  Party shall have a sufficient  number of authorized
shares of its Common  Stock which have not been issued or reserved  for issuance
to permit the exercise in full of the Rights in accordance  with this Section 13
(Consolidation,  Merger or Sale or  Transfer  of Assets or  Earning  Power)  and
unless prior  thereto the Company and such  Principal  Party shall have executed
and  delivered to the Rights Agent a  supplemental  agreement  providing for the
terms  set  forth  in  paragraphs  (a) and (b) of this  Section  13 and  further
providing that, as soon as practicable  after the date of such Flip-over  Event,
the Principal Party will

               (i) prepare and file a registration statement under the Act, with
          respect to the Rights and the securities  purchasable upon exercise of
          the Rights on an  appropriate  form,  and will use its best efforts to
          cause such  registration  statement to (A) become effective as soon as
          practicable  after  such  filing  and  (B)  remain  effective  (with a
          prospectus at all times meeting the requirements of the Act) until the
          Expiration  Date and take all such other action as may be necessary to
          enable the Principal  Party to issue the securities  purchasable  upon
          exercise of the Rights,  including but not limited to the registration
          or  qualification  of such securities  under all requisite  securities
          laws or  jurisdictions  of the various  states and the listing of such
          securities on such exchange and trading markets as may be necessary or
          appropriate; and

               (ii) will deliver to holders of the Rights  historical  financial
          statements for the Principal  Party and each of its  Affiliates  which
          comply in all respects with the  requirements for registration on Form
          10 under the Exchange Act.

The provisions of this Section 13 (Consolidation,  Merger or Sale or Transfer of
Assets or Earning  Power) shall  similarly  apply to successive  consolidations,
mergers or statutory share  exchanges or similar  transactions or sales or other
transfers. In the event that a Flip-over Event shall occur at any time after the
occurrence  of a Flip-in  Event,  the  Rights  which have not  theretofore  been
exercised shall thereafter become exercisable in the manner described in Section
13(a)  (Consolidation,  Merger or Sale or Transfer of Assets or Earning Power --
Flip-over Event).

<PAGE 30>

     (d) Exceptions. Notwithstanding anything in this Agreement to the contrary,
Section  13  (Consolidation,  Merger or Sale or  Transfer  of Assets or  Earning
Power) shall not be applicable to a transaction  described in subparagraphs  (x)
and (y) of Section 13(a) (Consolidation, Merger or Sale or Transfer of Assets or
Earning Power -- Flip-over  Event) if (i) such transaction is consummated with a
Person or Persons who acquired shares of Common Stock pursuant to a tender offer
or exchange offer for all outstanding shares of Common Stock which complies with
the provisions of Section 11(a)(ii)(A) (Adjustment of Purchase Price; Number and
Kind of Shares or Number of Rights -- Certain  Adjustments)  (or a  wholly-owned
subsidiary  of any such Person or  Persons),  (ii) the price per share of Common
Stock offered in such transaction is not less than the price per share of Common
Stock paid to all holders of shares of Common Stock whose shares were  purchased
pursuant to such tender or  exchange  offer and (iii) the form of  consideration
being offered in such transaction is the same as the form of consideration  paid
to all holders of shares of Common Stock whose shares were purchased pursuant to
such tender offer or exchange offer.  Upon  consummation of any such transaction
contemplated by this Section 13(d), all Rights hereunder shall expire.

<PAGE 31>

     Section 14. Fractional Rights and Fractional Shares.

     (a) Fractional Rights. The Company shall not be required to issue fractions
of Rights,  except prior to the  Distribution  Date as provided in Section 11(p)
(Adjustment of Purchase Price;  Number and Kind of Shares or Number of Rights --
Common Stock  Adjustments),  or to distribute Rights Certificates which 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 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.  The closing price of
the Rights for any Trading Day shall be the last sale price, regular way, or, in
case no such sale takes place on such  Trading  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 Rights are 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 Rights are
listed or admitted  to  trading,  or if the Rights are not listed or admitted to
trading on any national securities exchange, the last quoted price or, if not so
quoted, 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  Quotation  System or such other system then in use or, if on any such
date the  Rights  are 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 Rights selected by the Board. If on any such date no such market
maker is making a market in the  Rights,  the fair  value of the  Rights on such
date as determined in good faith by the Board shall be used.

     (b) Fractional Shares of Preferred Stock. The Company shall not be required
to issue  fractions of shares of Preferred Stock (other than fractions which are
integral multiples of one one-thousandth of a share of Preferred Stock which may
at the option of the Company, be evidenced by depositary receipts) upon exercise
of the Rights or to distribute  certificates which evidence fractional shares of
Preferred  Stock  (other than  fractions  which are  integral  multiples  of one
one-thousandth  of a share  of  Preferred  Stock).  Interests  in  fractions  of
Preferred  Stock in  integral  multiples  of one one-  thousandth  of a share of
Preferred Stock may, at the election of the Company,  be evidenced by depositary
receipts,  pursuant  to an  appropriate  agreement  between  the  Company  and a
depositary selected by it; provided,  however, that such agreement shall provide
that  the  holders  of such  depositary  receipts  shall  have  all the  rights,
privileges and  preferences  to which they are entitled as beneficial  owners of
the  Preferred  Stock  represented  by  such  depositary  receipts.  In  lieu of
fractional  shares of  Preferred  Stock that are not  integral  multiples of one
one-thousandth  of a  share  of  Preferred  Stock,  the  Company  may 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 one  one-thousandth  of a share of Preferred Stock. For purposes
of this Section 14(b), the current market value of one one-thousandth of a share
of Preferred Stock shall be one  one-thousandth  of the closing price of a share
of Preferred Stock (as determined  pursuant to Section 11(d)(ii)  (Adjustment of
Purchase Price;  Number and Kind of Shares or Number of Rights -- Current Market
Price) for the Trading Day immediately prior to the date of such exercise.

<PAGE 32>

     (c)  Fractional  Shares of Common  Stock.  Following  the  occurrence  of a
Triggering Event, the Company shall not be required to issue fractions of shares
of Common Stock upon exercise of the Rights or to distribute  certificates which
evidence  fractional  shares of Common Stock.  In lieu of  fractional  shares of
Common  Stock,  the  Company  may  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 one (1) share
of Common Stock. For purposes of this Section 14(c), the current market value of
one  share of Common  Stock  shall be the  closing  price of one share of Common
Stock (as determined pursuant to Section 11(d)(i) (Adjustment of Purchase Price;
Number and Kind of Shares or Number of Rights -- Current  Market  Price) for the
Trading Day immediately prior to the date of such exercise.

     (d) Waiver of  Fractional  Rights and Shares.  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,  except as
permitted by this Section 14 (Fractional Rights and Fractional Shares).

     Section  15.  Rights of  Action.  All  rights of action in  respect 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 Stock); and any registered holder of any Rights Certificate (or, prior to
the Distribution  Date, of the Common Stock),  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 Stock),  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 shall be entitled to specific
performance of the obligations hereunder and injunctive relief against actual or
threatened violations of the obligations hereunder of any Person subject to this
Agreement.

<PAGE 33>

     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 Common Stock;

     (b) after the Distribution  Date, the Rights  Certificates are transferable
only on the registry  books of the Rights Agent if  surrendered at the principal
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;

     (c) subject to Section 6(a) (Transfer,  Split Up,  Combination and Exchange
of Rights Certificates; Mutilated, Destroyed, Lost or Stolen Rights Certificates
- -- Procedure) and Section 7(f) (Exercise of Rights;  Purchase Price;  Expiration
Date of Rights --  Surrender  of Rights  Certificates;  Identity  of  Beneficial
Owner),  the Company and the Rights Agent may deem and treat the person in whose
name a Rights  Certificate (or, prior to the  Distribution  Date, the associated
Common Stock 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 Stock  certificate made by
anyone other than the Company or the Rights Agent) for all purposes  whatsoever,
and neither the Company nor the Rights  Agent,  subject to the last  sentence of
Section 7(e) (Exercise of Rights;  Purchase Price;  Expiration Date of Rights --
Termination of Acquiring  Person's Rights),  shall be required to be affected by
any notice to the contrary; and

     (d) notwithstanding anything in this Agreement to the contrary, neither the
Company nor the Rights  Agent shall have any  liability to any holder of a Right
or other Person as a result of its  inability to perform any of its  obligations
under this  Agreement by reason of any  preliminary  or permanent  injunction or
other order, decree or ruling issued by a court of competent  jurisdiction or by
a  governmental,  regulatory  or  administrative  agency or  commission,  or any
statute,  rule,  regulation  or executive  order  promulgated  or enacted by any
governmental authority, prohibiting or otherwise restraining performance of such
obligation; provided, however, the Company must use its best efforts to have any
such order, decree or ruling lifted or otherwise overturned as soon as possible.

     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 number of one  one-thousandths of
a share of Preferred  Stock 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 (Notice
of  Certain  Events)),  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 hereof.

<PAGE 34>

     Section 18. Concerning the Rights Agent.

     (a)  Compensation.  The Company  shall 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
agrees to indemnify the Rights Agent for, and to hold it harmless  against,  any
loss,  liability or expense,  incurred  without gross  negligence,  bad faith or
willful misconduct on the part of the Rights Agent, for anything done or omitted
to  be  done  by  the  Rights  Agent  in  connection  with  the  acceptance  and
administration of this Agreement,  including the costs and expenses of defending
against or investigating any claim of liability in the premises.

     (b)  Reliance.  The Rights  Agent  shall be  protected  and shall  incur no
liability for or in respect of any action taken, suffered or omitted to be taken
by it in connection with its  administration  of this Agreement in reliance upon
any Rights  Certificate or certificate for Common Stock 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 (Duties of Rights Agent).

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

     (a) Successor. 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  corporate  trust or stock  transfer  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  hereto;  provided,  however,  that such  corporation
would be  eligible  for  appointment  as a  successor  Rights  Agent  under  the
provisions  of Section 21  (Change  of Rights  Agent).  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 a 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 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.

<PAGE 35>

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

     (b) Certification by the Company. 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 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 the President,  any Vice  President,  the Secretary,  any
Assistant Secretary, the Treasurer or any Assistant Treasurer 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) Liability for Gross  Negligence,  etc. The Rights Agent shall be liable
hereunder only for its own gross negligence, bad faith or willful misconduct.

     (d)  Statements  of Fact or Recitals.  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  or be  required  to verify  the same
(except as to its  countersignature on such Rights  Certificates),  but all such
statements and recitals are and shall be deemed to have been made by the Company
only.

     (e)  Agreement;  Adjustments.  The  Rights  Agent  shall  not be under  any
responsibility in respect of the validity of this Agreement or the execution and
delivery  hereof  (except the due  execution  hereof by the Rights  Agent) or in
respect of the  validity  or  execution  of any Rights  Certificate  (except its
countersignature);  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 adjustment  required under the
provisions  of Section 11  (Adjustment  of  Purchase  Price;  Number and Kind of
Shares or Number of  Rights) or  Section  13  (Consolidation,  Merger or Sale or
Transfer of Assets or Earning  Power) or responsible  for the manner,  method or
amount of any such adjustment or the ascertaining of the existence of facts that
would require any such adjustment (except with respect to the exercise of Rights
evidenced by Rights  Certificates  after actual notice of any such  adjustment);
nor  shall it by any act  hereunder  be  deemed  to make any  representation  or
warranty as to the authorization or reservation of any shares of Common Stock or
Preferred  Stock  to  be  issued  pursuant  to  this  Agreement  or  any  Rights
Certificate or as to whether any shares of Common Stock or Preferred Stock will,
when so issued, be validly authorized and issued, fully paid and nonassessable.

     (f) Further Assurances. The Company 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)  Instructions.  The Rights Agent is hereby  authorized  and directed to
accept instructions with respect to the performance of its duties hereunder from
the President,  any Vice President,  the Secretary, any Assistant Secretary, the
Treasurer or any Assistant Treasurer of the Company and to apply to such persons
for advice or instructions  in connection  with its duties,  and it shall not be
liable  for any  action  taken or  suffered  to be taken by it in good  faith in
accordance with the instructions of any such person.

     (h)  Dealing in Rights.  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.

<PAGE 37>

     (i) Agents;  Reasonable Care. 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,  however,  reasonable care was
exercised in the selection and continued employment thereof.

     (j) Expenses;  Repayment  Assurances.  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. The Rights  Agent may, in its sole
discretion, before taking any action which would necessitate expending funds for
expenses that are reimbursable under this Agreement,  require prepayment of such
expenses.

     (k) Exercise of Rights;  Consultation with Company. 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 of transfer without first
consulting with the Company.

     (l) No Notice of Facts.  The Rights  Agent  shall not be  required  to take
notice  or be  deemed  to  have  notice  of any  fact,  event  or  determination
(including, without limitation, any dates or events defined in this Agreement or
the  designation of any Person as an Acquiring  Person,  Affiliate or Associate)
under this  Agreement  unless and until the Rights  Agent shall be  specifically
notified in writing by the Company of such fact, event or determination.

     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) calendar days' notice in writing mailed to the Company,  and to
each transfer  agent of the Common Stock and Preferred  Stock,  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)  calendar  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
Common Stock and Preferred  Stock,  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
Company shall appoint a successor to the Rights Agent. If the Company shall fail
to make such  appointment  within a period of thirty  (30)  calendar  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
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 be (a) 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 stock
transfer or corporate trust powers,  is subject to supervision or examination by
federal  or state  authority  and has at the time of its  appointment  as Rights
Agent a combined capital and surplus of at least $50,000,000 or (b) an Affiliate
of a corporation  described in clause (a) of this sentence.  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 Common Stock and the Preferred  Stock, 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 (Change of Rights
Agent), 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.

<PAGE 38>

     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 the Board 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
shares  of  Common  Stock  following  the  Distribution  Date  and  prior to the
redemption or expiration of the Rights,  the Company (a) shall,  with respect to
shares of  Common  Stock 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 securities  hereafter issued by the Company, in either
case outstanding as of the Distribution Date, and (b) may, in any other case, if
deemed  necessary  or  appropriate  by  the  Board,  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
if, and to the extent  that,  the Company  shall be advised by counsel that such
issuance would create a significant  risk of material,  adverse tax consequences
to the  Company or the Person to whom such Rights  Certificate  would be issued,
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.

     Section 23. Redemption and Termination.

     (a)  Redemption.  The Company may, at its option,  at any time prior to the
earlier of (i) the Stock  Acquisition  Date, or (ii) the Final  Expiration Date,
redeem (the date of such redemption  being referred to herein as the "Redemption
Date") all but not less than all of the then outstanding  Rights at a redemption
price of $0.001  per Right,  as such  amount may be  appropriately  adjusted  to
reflect any stock split, stock dividend or similar  transaction  occurring after
the date hereof  (such  redemption  price being  hereinafter  referred to as the
"Redemption  Price").  The  redemption  of the Rights by the Company may be made
effective at such time,  on such basis and with such  conditions as the Board in
its sole  discretion,  may  establish.  The Company may, at its option,  pay the
Redemption  Price in cash,  shares of Common Stock (based on the Current  Market
Price of the  Common  Stock  at the time of  redemption)  or any  other  form of
consideration deemed appropriate by Board.

<PAGE 39>

     (b) Effect of  Redemption;  Procedure.  Immediately  upon the action of the
Company ordering the redemption of the Rights 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 for each Right so held.  Promptly after the  Redemption  Date, the Company
shall (i) give notice of such  redemption to the Rights Agent,  (ii) give public
notice of such redemption;  provided,  however, that the failure to give, or any
defect in, such notice  shall not affect the  validity of such  redemption,  and
(iii) mail  notice of such  redemption  to the  holders of the then  outstanding
Rights 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  Stock.  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.  Amounts payable shall be rounded
down to the nearest $0.01.

     Section 24. Exchange.

     (a) Right to Exchange. The Company may, at its option, at any time and from
time to time after the first occurrence of a Flip-in Event, exchange all or part
of the then  outstanding  and  exercisable  Rights (other than Rights which have
become void as provided in Section  7(e)  (Exercise of Rights;  Purchase  Price;
Expiration Date of Rights -- Termination of Acquiring  Person's Rights)) for the
Exchange  Number of shares of Common Stock,  shares or units of Preferred  Stock
which the Board has determined to be a Common Stock  Equivalent,  units of other
property or any combination thereof as determined by the Board.  Notwithstanding
the foregoing, the Company 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 shares of Common Stock for or pursuant to any such plan),  together with
all Affiliates and  Associates of such Person,  becomes the Beneficial  Owner of
50% or more of the shares of Common Stock then outstanding.  The exchange of the
Rights by the Company may be made effective at such time, on such basis and with
such conditions as the Board in its sole discretion may establish.

<PAGE 40>

     (b)  Effect of  Exchange;  Procedure.  Immediately  upon the  action of the
Company  ordering the exchange of any Rights  pursuant to paragraph  (a) of this
Section 24,  evidence  of which shall have been filed with the Rights  Agent and
without any further  action and without any notice,  the right to exercise  such
Rights will  terminate and the only right  thereafter of a holder of such Rights
shall be to  receive  that  number  of  shares of  Common  Stock,  Common  Stock
Equivalents  or units of other  property equal to the number of such Rights held
by such holder  multiplied by the Exchange Number.  Promptly after the action of
the Company  ordering  the  exchange of the Rights,  the Company  shall (i) file
evidence of such action with the Rights  Agent,  (ii) give public notice of such
exchange;  provided,  however,  that the failure to give, or any defect in, such
notice shall not affect the validity of such exchange,  and (iii) mail notice of
such  exchange  to 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  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
as provided in Section 7(e) (Exercise of Rights; Purchase Price; Expiration Date
of Rights -- Termination of Acquiring  Person's  Rights)) held by each holder of
Rights.

     (c) Common Stock Equivalents.  In any exchange pursuant to this Section 24,
the Company,  at its option,  may substitute Common Stock Equivalents for Common
Stock  exchangeable for Rights, at the initial rate of one share of Common Stock
Equivalent for each share of Common Stock, as appropriately  adjusted to reflect
adjustments  in the voting rights of the Common Stock  pursuant to the Company's
Articles  of  Incorporation,  so that  the  share  of  Common  Stock  Equivalent
delivered  in lieu of each  share of Common  Stock  shall  have the same  voting
rights as one share of Common Stock.

     (d)  Insufficient  Common Stock.  In the event that the number of shares of
Common Stock which are authorized by the Company's Articles of Incorporation but
not  outstanding  or reserved for issuance for purposes other than upon exercise
of the Rights is not  sufficient  to permit any exchange of Rights in accordance
with this  Section 24, the Company  may, at its option,  take all such action as
may be  necessary to  authorize  additional  shares of Common Stock for issuance
upon such exchange.

     (e) Fractional Shares. Upon the action of the Company ordering the exchange
of any Rights  pursuant to paragraph  (a) of this Section 24, the Company  shall
not be required to issue fractions of shares or to distribute certificates which
evidence  fractional  shares. In lieu of such fractional shares, the Company may
pay to the registered  holders of the Rights  Certificates  with regard to which
such  fractional  shares would  otherwise be issuable an amount in cash equal to
the same fraction of the current market value of one share of Common Stock.  For
purposes of this  Section 24, the  current  market  value of one share of Common
Stock shall be the  closing  price of one share of Common  Stock (as  determined
pursuant to Section 11(d)(i)  (Adjustment of Purchase Price;  Number and Kind of
Shares or  Number  of Rights --  Current  Market  Price))  for the  Trading  Day
immediately  prior to the date of exchange  pursuant to this Section 24, and the
value of any Common  Stock  Equivalent  shall be deemed to have the same current
market value as the Common Stock on such date.

<PAGE 41>

     Section 25. Notice of Certain Events.

     (a) Preferred Stock  Transactions,  etc. In case the Company shall propose,
at any time after the  Distribution  Date,  (i) to pay any  dividend  payable in
stock of any  class  to the  holders  of  Preferred  Stock or to make any  other
distribution to the holders of Preferred  Stock (other than a regular  quarterly
cash  dividend  out of earnings or retained  earnings of the  Company);  (ii) to
offer to the holders of Preferred  Stock rights or warrants to subscribe  for or
to purchase any additional  shares of Preferred  Stock or shares of stock of any
class  or  any  other  securities,  rights  or  options;  (iii)  to  effect  any
reclassification of its Preferred Stock (other than a reclassification involving
only the subdivision of outstanding  shares of Preferred Stock);  (iv) to effect
any  consolidation  with,  merger into or with, or statutory  share  exchange or
similar  transaction  with,  any other Person  (other than a  Subsidiary  of the
Company in a  transaction  which  complies  with Section  11(o)  (Adjustment  of
Purchase  Price;  Number  and Kind of Shares or Number of Rights --  Restriction
against  Diminishing  Benefits of the  Rights)),  or to effect any sale or other
transfer  (or to permit  one or more of its  Subsidiaries  to effect any sale or
other transfer), in one transaction or a series of related transactions, of more
than 50% of the  assets,  cash  flow or  earning  power of the  Company  and its
Subsidiaries  (taken as a whole) to any other Person or Persons  (other than the
Company and/or any of its Subsidiaries in one or more transactions each of which
complies with Section  11(o));  (v) to effect the  liquidation,  dissolution  or
winding up of the Company,  or (vi) to declare or pay any dividend on the shares
of Common Stock payable in Common Stock or to effect a subdivision,  combination
or consolidation of the shares of Common Stock (by reclassification or otherwise
than by payment of  dividends in Common  Stock),  then,  in each such case,  the
Company  shall  give to each  holder  of a  Rights  Certificate,  to the  extent
feasible and in accordance with Section 26 (Notices),  a notice of such proposed
action,  which  shall  specify  the record  date for the  purposes of such stock
dividend,  distribution  of  rights  or  warrants,  or the  date on  which  such
reclassification,  consolidation,  merger,  statutory  share exchange or similar
transaction, sale, transfer, liquidation,  dissolution, or winding up is to take
place and the date of  participation  therein  by the  holders  of the shares of
Preferred  Stock,  if any such date is to be fixed,  and such notice shall be so
given in the case of any  action  covered  by clause  (i) or (ii) above at least
twenty (20)  calendar days prior to the record date for  determining  holders of
the shares of Preferred  Stock for  purposes of such action,  and in the case of
any such other  action,  at least twenty (20) calendar days prior to the date of
the taking of such proposed action or the date of  participation  therein by the
holders of the shares of Preferred Stock, whichever shall be the earlier.

<PAGE 42>

     (b) Other  Transactions.  In case any of the  events  set forth in  Section
11(a)(ii)  (Adjustment of Purchase Price; Number and Kind of Shares or Number of
Rights -- Certain  Adjustments)  shall occur,  then,  in any such case,  (i) the
Company shall as soon as practicable  thereafter give to each holder of a Rights
Certificate, to the extent feasible and in accordance with Section 26 (Notices),
a notice of the occurrence of such event,  which shall specify the event and the
consequences of the event to holders of Rights under Section 11(a)(ii), and (ii)
all  references  in the preceding  paragraph to Preferred  Stock shall be deemed
thereafter to refer to Common Stock and/or, if appropriate, other securities.

     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  telecopier
(with receipt  confirmed) or by first-class  mail,  postage  prepaid,  addressed
(until another address is filed in writing with the Rights Agent) as follows:

                                    AAON, Inc.
                                    2425 South Yukon
                                    Tulsa, Oklahoma 74107
                                    Attention: Chief Executive Officer
                                    Telecopier: (918) 583-6094


Subject to the provisions of Section 21 (Change of Rights Agent),  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 telecopier  (with receipt  confirmed) or by first-class
mail, postage prepaid, addressed (until another address is filed in writing with
the Company) as follows:

                                    Progressive Transfer Company
                                    1981 East Murray-Holladay Road
                                    Suite 200
                                    Salt Lake City, Utah
                                    Attention: Kurtis D. Hughes
                                    Telecopier: 801-277-3147

Notices  or  demands  authorized  by this  Agreement  to be given or made by the
Company or the Rights  Agent to the holder of any  Rights  Certificate  (or,  if
prior to the  Distribution  Date,  to the  holder of  certificates  representing
shares  of  Common  Stock)  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.

     Section  27.  Supplements  and  Amendments.  For so long as the  Rights are
redeemable,  and subject to the  penultimate  sentence  of this  Section 27, the
Company may, and the Rights Agent shall,  if the Company so directs,  supplement
or amend any provision of this Agreement  without the approval of any holders of
certificates   representing  shares  of  Common  Stock  or,  on  and  after  the
Distribution  Date,  any  holders of Rights  Certificates.  At any time when the
Rights are no longer redeemable and subject to the penultimate  sentence of this
Section 27, the Company and the Rights Agent  shall,  if the Company so directs,
supplement or amend this Agreement without the approval of any holders of Rights
Certificates;  provided,  however,  that no such supplement or amendment may (i)
adversely affect the interests of the holders of Rights Certificates,  or, prior
to the  Distribution  Date,  the  holders of the  Common  Stock  (other  than an
Acquiring  Person or an Affiliate or Associate of any such  Person),  (ii) cause
this  Agreement  again to become  amendable  other than in accordance  with this
sentence,  or (iii)  cause  the  Rights  again to  become  redeemable.  Upon the
delivery of a  certificate  from an  appropriate  officer of the  Company  which
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.
Notwithstanding  anything  contained  in  this  Agreement  to the  contrary,  no
supplement or amendment  shall be made which changes the Redemption  Price,  the
Final Expiration Date, the Purchase Price, or the number of one  one-thousandths
of a share  of  Preferred  Stock  for  which a right is  exercisable;  provided,
however, that at any time prior to (i) a Stock Acquisition Date or (ii) 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 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 upon  consummation
thereof,  such Person would be the Beneficial Owner of 20% or more of the shares
of Common Stock then outstanding, the Board may amend this Agreement to increase
the  Purchase  Price  or  extend  the  Final   Expiration  Date.  Prior  to  the
Distribution  Date,  the  interests  of the  holders  of Rights  shall be deemed
coincident with the interests of the holders of Common Stock.

<PAGE 43>

     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 shares of
Common Stock  outstanding  at any  particular  time,  including  for purposes of
determining the particular percentage of such outstanding shares of Common Stock
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 shall have the  exclusive  power and authority
to administer this Agreement and to exercise all rights and powers  specifically
granted to the Board or to 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,  in good faith,
shall (x) be final, conclusive and binding on the Company, the Rights Agent, the
holders of the Rights and all other  parties,  and (y) not  subject the Board to
any liability to the holders of the Rights.

<PAGE 44>

     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 Distribution
Date,  registered  holders of the Common  Stock) 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,
registered holders of the Common Stock).

     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 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 (Redemption and  Termination)  shall
be  reinstated  and shall not expire  until the Close of  Business  on the tenth
Business Day following the date of such determination by the Board.

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

* * * * *


       IN WITNESS  WHEREOF,  the parties hereto have caused this Agreement to be
duly executed as of the day and year first above written.



Attest:


By:/s/ John B. Johnson     
   --------------------------
       John B. Johnson, Secretary


By:/s/ Shirrell W. Hughes  
   --------------------------
Name:  Shirrell W. Hughes    
Title: President   


AAON, INC.


By:/s/ Norman H. Asbjornson         
   --------------------------
       Norman H. Asbjornson, President
       and Treasurer



PROGRESSIVE TRANSFER COMPANY


By:/s/ Kurtis D. Hughes    
   -------------------------
Name:  Kurtis D. Hughes      
Title: Vice President       



<PAGE 46>

Exhibit 1



CERTIFICATE OF
                     DESIGNATION, PREFERENCES AND RIGHTS OF
                            SERIES A PREFERRED STOCK

                                       of

                                   AAON, INC.

     Pursuant to Sections  78.195 and 78.1955 of the Nevada General  Corporation
Law

     We,  Norman H.  Asbjornson,  President  and  Treasurer and John B. Johnson,
Secretary  of AAON,  INC.  (the  "Corporation"),  a  corporation  organized  and
existing under Chapter 78 of the Nevada Revised Statutes, in accordance with the
provisions of Sections 78.035 and 78.195 of the Nevada General  Corporation Law,
DO HEREBY CERTIFY:

     That pursuant to the authority  conferred  upon the Board of Directors (the
"Board")  by  the  Amended  and  Restated   Articles  of  Incorporation  of  the
Corporation,  as  amended,  the said Board on  February  18,  1999,  adopted the
following  resolutions  creating  a series  of  one-hundred  thousand  shares of
Preferred  Stock,  par value $.001 per share,  designated  as Series A Preferred
Stock:

     RESOLVED, that, pursuant to the authority vested in the Board in accordance
with the provisions of its Amended and Restated  Articles of  Incorporation,  as
amended,  the Board does hereby  create,  authorize and provide for the issuance
upon the exercise of the  Corporation's  Preferred Stock Purchase  Rights,  of a
series of Preferred Stock of the Corporation, and does hereby fix and state that
the designations,  amounts,  powers,  preferences and relative and other special
rights  and the  qualifications,  limitations  or  restrictions  thereof  are as
follows:

Series A Preferred Stock

     Section 1.  Designation  and  Amount.  The shares of such  series  shall be
designated  as Series A  Preferred  Stock and the number of shares  constituting
such series shall be 100,000,  which  number may be increased or decreased  (but
not below the number of shares  thereof then  outstanding)  from time to time by
action of the Board of Directors.


     Section 2. Dividends and Distributions.

     (A) Subject to the prior and  superior  rights of the holders of any shares
of any series of  Preferred  Stock  ranking  prior and superior to the shares of
Series A Preferred  Stock with  respect to  dividends,  the holders of shares of
Series A Preferred Stock shall be entitled to receive,  when, as and if declared
by the Board of  Directors  out of funds  legally  available  for that  purpose,
quarterly  dividends payable in cash on the 1st day of July,  October,  January,
April, in each year  commencing  April 1, 1999 (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 Preferred  Stock,  in an amount per share (rounded to the
nearest  cent) equal to the greater of (a) $0.01 or (b) subject to the provision
for adjustment  hereinafter set forth,  one thousand (1,000) times the aggregate
per share  amount of all cash  dividends,  and one  thousand  (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 the common stock of the
Corporation, par value $.004 per share ("the Common Stock"), or a subdivision of
the  outstanding  shares of Common  Stock (by  reclassification  or  otherwise),
declared on 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
Preferred  Stock. In the event the Corporation  shall at any time after February
19, 1999 (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
Preferred Stock were entitled  immediately  prior to such event under clause (b)
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
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 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);  provided that, in the event no dividend or
distribution  shall have been  declared  on the Common  Stock  during the period
between any Quarterly  Dividend  Payment Date and the next subsequent  Quarterly
Dividend  Payment  Date, a dividend of $0.01 per share on the Series A Preferred
Stock  shall  nevertheless  be payable  on such  subsequent  Quarterly  Dividend
Payment Date.

     (C) Dividends shall begin to accrue and be cumulative on outstanding shares
of Series A  Preferred  Stock  from the  Quarterly  Dividend  Payment  Date next
preceding the date of issue of such shares of Series A 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 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 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  Preferred
Stock  entitled  to  receive  payment  of a dividend  or  distribution  declared
thereon,  which  record  date shall be no more than sixty (60) days prior to the
date fixed for the payment thereof.

     Section 3. Voting Rights. The holders of shares of Series A Preferred Stock
shall have the following voting rights:

     (A) Subject to the provision for  adjustment  hereinafter  set forth,  each
share of Series A  Preferred  Stock  shall  entitle  the  holder  thereof to one
thousand (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  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 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.  Except as otherwise  provided herein or by law, the holders of the
shares of Series A  Preferred  Stock shall not be entitled to vote as a separate
class on any matters submitted to a vote of the stockholders.

          (C)    (i) If at any  time dividends  on any Series A Preferred  Stock
          shall be in arrears in an amount equal to six (6) quarterly  dividends
          thereon,  the  holders of the Series A  Preferred  Stock,  voting as a
          separate  series from all other series of Preferred  Stock and classes
          of capital stock,  shall be entitled to elect two members of the Board
          of Directors in addition to any directors elected by any other series,
          class or classes of securities, and the authorized number of directors
          will automatically be increased by two. Promptly thereafter, the Board
          of Directors of this Corporation shall, as soon as may be practicable,
          call a special  meeting of holders of Series A Preferred Stock for the
          purpose  of  electing  such  members of the Board of  Directors.  Said
          special  meeting  shall  in any  event be held  within  45 days of the
          occurrence of such arrearage.

               (ii)  During any period  when the  holders of Series A  Preferred
          Stock,  voting as a separate series,  shall be entitled and shall have
          exercised  their  right to elect two  directors,  then and during such
          time  as such  right  continues  (a) the  then  authorized  number  of
          directors  shall be  increased  by two,  and the  holders  of Series A
          Preferred  Stock,  voting as a separate  series,  shall be entitled to
          elect the  additional  directors  so provided  for,  and (b) each such
          additional director shall not be a member of any existing class of the
          Board of Directors,  but shall serve until the next annual  meeting of
          stockholders  for the election of  directors,  or until his  successor
          shall be elected  and shall  qualify,  or until his right to hold such
          office terminates pursuant to the provisions of this Section 3(C).

               (iii) A  director  elected  pursuant  to the terms  hereof may be
          removed  with or without  cause by the  holders of Series A  Preferred
          Stock entitled to vote in an election of such Director.

               (iv)  If  during  any  interval   between   annual   meetings  of
          stockholders  for the election of  directors  and while the holders of
          Series A Preferred  Stock  shall be  entitled to elect two  directors,
          there is no such director in office by reason of resignation, death or
          removal, then, promptly thereafter,  the Board of Directors shall call
          a special  meeting of the holders of Series A Preferred  Stock for the
          purpose of filling such  vacancy and such  vacancy  shall be filled at
          such special meeting.  Such special meeting shall in any event be held
          within 90 days of the  occurrence  of such  vacancy,  unless an annual
          meeting of stockholders is scheduled during such 90-day period.

               (v) At  such  time  as the  arrearage  is  fully  cured,  and all
          dividends  accumulated  and unpaid on any shares of Series A Preferred
          Stock  outstanding  are paid, and, in addition  thereto,  at least one
          regular  dividend has been paid  subsequent to curing such  arrearage,
          the term of office of any directors  elected  pursuant to this Section
          3(C),  or  his  successor,  shall  automatically  terminate,  and  the
          authorized  number of directors shall  automatically  decrease by two,
          the rights of the  holders  of the  shares of the  Series A  Preferred
          Stock to vote as provided in this Section 3(C) shall cease, subject to
          renewal from time to time upon the same terms and conditions,  and the
          holders of shares of the Series A Preferred  Stock shall have only the
          limited voting rights elsewhere herein set forth.

     (D) Except as set forth herein,  holders of Series A 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)  Whenever  quarterly  dividends  or other  dividends  or  distributions
payable on the Series A 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 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  Preferred
          Stock;

               (ii) declare or pay dividends on, or make any other distributions
          on, any shares of stock ranking junior (either as to dividends or upon
          liquidation,  dissolution  or winding  up) to the  Series A  Preferred
          Stock,  except  dividends paid ratably on the Series A Preferred Stock
          and all such junior 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
          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 Preferred Stock; or

               (iv) purchase or otherwise  acquire for  consideration any shares
          of Series A  Preferred  Stock,  or any  shares of stock  ranking  on a
          parity with the Series A 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.

     (B) 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  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 Preferred Stock unless,  prior thereto,  the holders
of shares of Series A Preferred  Stock shall have received $250 per share,  plus
an amount  equal to accrued  and unpaid  dividends  and  distributions  thereon,
whether or not declared,  to the date of such payment (the "Series A Liquidation
Preference"). Notwithstanding any provision of the Amended and Restated Articles
of Incorporation, as amended, to the contrary, following the payment of the full
amount of the Series A Liquidation Preference, no additional distributions shall
be made to the  holders  of shares of Series A  Preferred  Stock  unless,  prior
thereto, the holders of shares of Common Stock shall have received an amount per
share (the "Common  Adjustment")  equal to the quotient obtained by dividing (i)
the  Series  A  Liquidation   Preference  by  (ii)  one  thousand   (1,000)  (as
appropriately  adjusted as set forth in paragraph (C) of this Section to reflect
such events as stock splits, stock dividends and recapitalizations  with respect
to the  Common  Stock)  (such  number in clause  (ii)  immediately  above  being
referred  to as the  "Adjustment  Number").  Following  the  payment of the full
amount of the  Series A  Liquidation  Preference  and the Common  Adjustment  in
respect of all outstanding  shares of Series A Preferred Stock and Common Stock,
respectively,  holders  of Series A  Preferred  Stock and  holders  of shares of
Common  Stock  shall  receive  their  ratable  and  proportionate  share  of the
remaining assets to be distributed in the ratio of the Adjustment  Number to one
(1) with respect to such Preferred Stock and Common Stock, on a per share basis,
respectively.

     (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 Preferred  Stock,  then such remaining assets
shall be distributed  ratably to the holders of such parity shares in proportion
to their respective liquidation  preferences.  In the event, however, that there
are not  sufficient  assets  available  to permit  payment in full of the Common
Adjustment,  then such  remaining  assets  shall be  distributed  ratably to the
holders of Common Stock.

     (C) 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  Adjustment  Number  in  effect  immediately  prior to such  event  shall be
adjusted by multiplying  such  Adjustment  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.

     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,
securities,  cash or any other  property,  then in any such  case the  shares of
Series A  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 one thousand  (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 (ii) 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 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. Redemption.  The outstanding  shares of Series A Preferred Stock
may be redeemed at the option of the Board of Directors  as a whole,  but not in
part,  at any time,  or from to time to time, at a cash price per share equal to
one hundred  five  percent  (105%) of (i) the product of the  Adjustment  Number
times the  Average  Market  Value (as such term is  hereinafter  defined) of the
Common Stock,  plus (ii) all dividends which on the redemption date have accrued
on the shares to be  redeemed  and have not been  paid,  or  declared  and a sum
sufficient for the payment  thereof set apart,  without  interest.  The "Average
Market  Value" is the  average of the closing  sale  prices of the Common  Stock
during the thirty  (30) day period  immediately  preceding  the date  before the
redemption date on the Composite Tape for New York Stock Exchange Listed Stocks,
or, if such stock is not  quoted on the  Composite  Tape,  on the New York Stock
Exchange,  or, if such stock is not listed on such  Exchange,  on the  principal
United States securities  exchange  registered under the Securities Exchange Act
of 1934,  as  amended,  on which such stock is listed,  or, if such stock is not
listed on any such exchange, the average of the closing sale prices with respect
to a share of Common Stock during such thirty (30) day period,  as quoted on the
National Association of Securities Dealers,  Inc. Automated Quotations System or
any system then in use, or if no such quotations are available,  the fair market
value of the Common Stock as determined by the Board of Directors in good faith.

     Section 9. Ranking.  The Series A 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.  Except as  otherwise  provided in the Amended and
Restated  Articles  of  Incorporation,  as amended,  or by law,  the Amended and
Restated Articles of Incorporation of the Corporation,  as amended, shall not be
further amended in any manner which would materially alter or change the powers,
preferences  or special  rights of the Series A Preferred  Stock so as to affect
them adversely without the affirmative vote of the holders of a majority or more
of the outstanding  shares of Series A Preferred Stock,  voting  separately as a
class.

     Section 11. Fractional Shares. At the Corporation's sole discretion, Series
A 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 Preferred Stock.

* * * * *


         IN WITNESS  WHEREOF,  we have executed and subscribed this  Certificate
and do affirm the foregoing as true as of February 19, 1999.

                                   AAON, INC.

                                   By: /s/ Norman H. Asbjornson
                                       ------------------------------   
                                           Norman H. Asbjornson
                                           President and Treasurer

                                   By: /s/ John B. Johnson
                                       ------------------------------   
                                           John B. Johnson
                                           Secretary


                                 ACKNOWLEDGMENT

STATE OF OKLAHOMA                           ss.
                                            ss.
COUNTY OF TULSA                             ss.

         Before me, a Notary Public,  on this day personally  appeared Norman H.
Asbjornson, known to me to be the person and officer whose name is subscribed to
the foregoing  instrument  and  acknowledged  to me that the same was the act of
AAON,  Inc., and that he has executed the same on behalf of said corporation for
the purposes and consideration  therein  expressed,  and in the capacity therein
stated.

         Given under my hand and seal of office this 19th day of February, 1999.



                                           -----------------
                                           Notary Public in and for the State of
                                           Oklahoma

(PERSONALIZED SEAL)



                                 ACKNOWLEDGMENT

STATE OF OKLAHOMA                           ss.
                                            ss.
COUNTY OF TULSA                             ss.

         Before me, a Notary  Public,  on this day  personally  appeared John B.
Johnson,  known to me to be the person and officer  whose name is  subscribed to
the foregoing  instrument  and  acknowledged  to me that the same was the act of
AAON,  Inc., and that he has executed the same on behalf of said corporation for
the purposes and consideration  therein  expressed,  and in the capacity therein
stated.

         Given under my hand and seal of office this 19th day of February, 1999.



                                           -----------------
                                           Notary Public in and for the State of
                                           Oklahoma

(PERSONALIZED SEAL)


<PAGE 55>

Exhibit 2


                          [Form of Rights Certificate]


                       Certificate No. R__________ Rights


NOT  EXERCISABLE  AFTER THE EARLIER OF MARCH 1, 2009, OR SUCH DATE AS THE RIGHTS
REPRESENTED  HEREBY ARE REDEEMED BY AAON, INC. (THE  "CORPORATION").  THE RIGHTS
REPRESENTED BY THIS RIGHTS CERTIFICATE ARE SUBJECT TO REDEMPTION,  AT THE OPTION
OF THE  CORPORATION,  AT $0.001  PER RIGHT ON THE TERMS SET FORTH IN THE  RIGHTS
AGREEMENT  DATED AS OF FEBRUARY 19,  1999,  BY AND BETWEEN THE  CORPORATION  AND
PROGRESSIVE  TRANSFER COMPANY, AS RIGHTS AGENT (THE "RIGHTS  AGREEMENT").  UNDER
CERTAIN CIRCUMSTANCES, RIGHTS BENEFICIALLY OWNED BY AN ACQUIRING PERSON (AS SUCH
TERM IS 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) (EXERCISE OF RIGHTS;  PURCHASE PRICE;  EXPIRATION DATE
OF RIGHTS -- TERMINATION OF ACQUIRING PERSON'S RIGHTS) OF SUCH AGREEMENT.]1

- --------
1    The portion of the legend in brackets  shall be inserted only if applicable
     and shall replace the preceding sentence.


                               Rights Certificate
                                   AAON, INC.

     This certifies  that _________________________________________________,  or
its, his or her 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 Rights Agreement,  dated as of February
19, 1999 (the "Rights Agreement"), between AAON, Inc., a Nevada corporation (the
"Corporation"),  and  Progressive  Transfer  Company  (the "Rights  Agent"),  to
purchase from the  Corporation at any time prior to 5:00 P.M.  (Tulsa,  Oklahoma
time) on March 1, 2009 at the office or offices of the Rights  Agent  designated
for  such  purpose,  or its  successors  as  Rights  Agent,  one  one-thousandth
(1/1,000) of a fully paid,  nonassessable share of Series A Preferred Stock (the
"Preferred  Stock") of the  Corporation,  at a  purchase  price of $____ per one
one-thousandth  (1/1,000) of a 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  shares  which  may be  purchased  upon
exercise  thereof) set forth above,  and the Purchase Price set forth above, are
the  number  and  Purchase  Price  as of  _____________,  ______,  based  on the
Preferred Stock as constituted at such date. The Corporation  reserves the right
to  require  prior to the  occurrence  of a  Triggering  Event  (as such term is
defined in the Rights  Agreement) that upon any exercise of Rights,  a number of
Rights be  exercised  so that only  whole  shares of  Preferred  Stock  would be
issued.

     Upon the  occurrence  of a Flip-in  Event (as such term is  defined  in the
Rights  Agreement),  if the Rights  evidenced  by this  Rights  Certificate  are
beneficially  owned by (i) an  Acquiring  Person or an Associate or Affiliate or
any such  Person (as such terms are  defined  in the Rights  Agreement),  (ii) a
transferee  of an Acquiring  Person or its  Associate or Affiliate who becomes a
transferee  after such  Acquiring  Person or its Associate or Affiliate  becomes
such, or (iii) under certain circumstances  specified in the Rights Agreement, a
transferee  of an Acquiring  Person or its  Associate or Affiliate who becomes a
transferee  prior to or  concurrently  with the Acquiring  Person becoming such,
such Rights shall become null and void and no holder hereof shall have any right
with respect to such Rights from and after the occurrence of such Flip-in Event.

     As provided in the Rights Agreement,  the Purchase Price and the number and
kind of shares of Preferred  Stock or other  securities,  which may be purchased
upon the exercise of the Rights evidenced by this Rights Certificate are subject
to modification  and adjustment upon the happening of certain events,  including
Triggering Events (as such term is defined in the Rights Agreement).

     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 Corporation 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 above-mentioned  office of the
Rights Agent and are also available upon written request to the Rights Agent.

     This Rights Certificate,  with or without other Rights  Certificates,  upon
surrender at the principal  office or offices 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 number of one  one-thousandths of a share of Preferred
Stock 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 for which this Rights Certificate is not exercised.

     Subject to the provisions of the Rights Agreement,  the Rights evidenced by
this  Certificate  (i) may be  redeemed  by the  Corporation  at its option at a
redemption price of $0.001 per Right at any time prior to the earlier of (a) the
Stock  Acquisition Date (as such term is defined in the Rights Agreement) or (b)
the Final Expiration Date (as such term is defined in the Rights  Agreement) and
(ii) may be exchanged  in whole or in part for  Preferred  Stock,  shares of the
Corporation's  Common Stock,  par value $.004 per share,  other  property or any
combination thereof.

     In addition,  the Rights may be exchanged,  in whole or in part, for shares
of the Common Stock,  or shares of common stock  equivalents of the  Corporation
having essentially the same value or economic rights as such shares. Immediately
upon the action of the Board of Directors  of the  Corporation  authorizing  any
such exchange,  and without any further action or any notice,  the Rights (other
than  Rights  which are not subject to such  exchange)  will  terminate  and the
Rights  will only  enable  holders to  receive  the  shares  issuable  upon such
exchange.

     No fractional shares of Preferred Stock will be issued upon the exercise of
any Right or Rights  evidenced  hereby (other than fractions  which are integral
multiples of one  one-thousandth  (1/1,000) of a share of Preferred Stock, which
may, at the election of the Corporation,  be evidenced by depositary  receipts),
but a cash  payment  will be made in lieu  thereof,  as  provided  in the Rights
Agreement.

     No holder of this Rights  Certificate  shall be  entitled to vote,  receive
dividends or be deemed for any purpose the holder of shares of  Preferred  Stock
or of any other securities of the Corporation  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  Corporation  or any right to vote for the election of
directors or upon any matter submitted to stockholders of the Corporation 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  of the
Corporation  (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.

     WITNESS the facsimile  signature of the proper  officers of the Corporation
and its corporate seal.



Dated as of _________________

ATTEST:                               AAON, INC.


- -------------------------------       By:
       Secretary                      Title:       


Countersigned:

RIGHTS AGENT

By: ---------------------------------                                        
         Authorized Signature




                  [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  within  Rights  Certificate  on the  books  of the
within-named Corporation, with full power of substitution.

Dated:
                                               ---------------------------      
                                               Signature

Signature Guaranteed:

                                   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 an Acquiring  Person (as such terms are defined in the
Rights Agreement); and

     (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 an Acquiring Person.


Dated:
                                               ---------------------------      
                                               Signature

Signature Guaranteed:

                                     NOTICE

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

                          FORM OF ELECTION TO PURCHASE
                      (To be executed if holder desires to
                       exercise Rights represented by the
                              Rights Certificate.)

To:      AAON, INC.

     The  undersigned  hereby  irrevocably  elects to  exercise  _______________
Rights  represented  by this  Rights  Certificate  to  purchase  the  shares  of
Preferred  Stock  issuable  upon the  exercise  of the  Rights  (or  such  other
securities of the  Corporation or of any other person which may be issuable upon
the exercise of the Rights) and requests  that  certificates  for such shares be
issued in the name of and delivered to:

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 of such Rights
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:


                                   CERTIFICATE

     The undersigned hereby certifies by checking the appropriate boxes that:

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

     (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 became an Acquiring Person or an Affiliate or Associate of
an Acquiring Person.


Dated:
                                               ---------------------------      
                                               Signature

Signature Guaranteed:



                                     NOTICE

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



<PAGE 62>

[Letter to Stockholders]   Exhibit 3







                                  March 1, 1999




Dear AAON Stockholder:

      On February 18, 1999, your Board of Directors adopted a Stockholder Rights
Plan  designed  to prevent a  potential  acquiror  from  gaining  control of the
Company without fairly compensating all of the Company's stockholders.

      The Rights will initially trade with shares of the Company's  Common Stock
and will have no impact on the way in which the  Company's  shares  are  traded.
There are no separate certificates or market for the Rights.

      The  Rights  will not become  exercisable  and trade  separately  from the
Common  Stock  until  the  earlier  of (1) ten  business  days  after  a  public
announcement  that a person has  acquired 20% or more of the Common Stock of the
Company or (2) ten business days (or any later date  determined by the Company's
Board of Directors)  after a person makes a tender or exchange  offer for 20% or
more of the Company's Common Stock.

      Many  other  public  companies  have  adopted  similar  plans,  indicating
widespread  agreement  that such plans can help Directors  deflect  coercive and
inadequate offers.

      A summary of the terms of the Rights is included with this letter.

                              Sincerely,

                              Norman H. Asbjornson
                              President and Treasurer





                          SUMMARY OF RIGHTS TO PURCHASE
                                 PREFERRED STOCK

      Effective  February 19, 1999,  the Board of Directors of AAON,  Inc.  (the
"Company")  declared a dividend  distribution of one Right for each  outstanding
share of the Company's common stock,  $.004 par value (the "Common  Stock"),  to
stockholders  of record at the close of  business  on March 1, 1999.  Each Right
entitles the registered  holder to purchase from the Company one  one-thousandth
(1/1,000) of a share of Series A Preferred Stock, par value $.001 per share (the
"Preferred  Stock"),  at a  Purchase  Price  of  $60.00  per one  one-thousandth
(1/1,000) of a share,  subject to adjustment.  The  description and terms of the
Rights are set forth in a Rights Agreement (the "Rights  Agreement") between the
Company and Progressive Transfer Company, as Rights Agent (the "Rights Agent").

      Initially,  the Rights will be attached to all Common  Stock  certificates
representing  shares then outstanding,  and no separate Rights Certificates will
be distributed.  The Rights will separate from the Common Stock upon the earlier
of (i) ten (10)  business  days  following a public  announcement  that a person
(other than Norman H.  Asbjornson,  the Company's  Chief  Executive  Officer) or
group of affiliated or associated persons (an "Acquiring  Person") has acquired,
or obtained the right to acquire,  beneficial  ownership of twenty percent (20%)
or more of the  outstanding  shares  of Common  Stock  (the  "Stock  Acquisition
Date"),  or (ii) ten (10)  business  days (or such  later  date as the  Board of
Directors shall  determine)  following the  commencement of a tender or exchange
offer that would result in a person or group beneficially  owning twenty percent
(20%) or more of such  outstanding  shares of Common Stock.  The date the Rights
separate is referred to as the "Distribution Date."

      Until the  Distribution  Date,  (i) the Rights  will be  evidenced  by the
Common Stock certificates and will be transferred with and only with such Common
Stock  certificates,  (ii) new Common Stock  certificates  issued after March 1,
1999 will contain a notation  incorporating  the Rights  Agreement by reference,
and (iii) the  surrender  for  transfer  of any  certificates  for Common  Stock
outstanding will also constitute the transfer of the Rights  associated with the
Common Stock represented by such certificates. Pursuant to the Rights Agreement,
the  Company  reserves  the  right  to  require  prior  to the  occurrence  of a
Triggering  Event (as defined below) that, upon any exercise of Rights, a number
of Rights be  exercised  so that only whole  shares of  Preferred  Stock will be
issued.

      The Rights are not exercisable until the Distribution Date and will expire
at the close of  business  on March 1,  2009,  unless  earlier  redeemed  by the
Company as described below.

      As soon as practicable after the Distribution  Date,  Rights  Certificates
will be mailed to  holders  of  record  of the  Common  Stock as of the close of
business  on  the  Distribution  Date  and,  thereafter,   the  separate  Rights
Certificates  will  represent the Rights.  Except in  connection  with shares of
Common Stock issued or sold  pursuant to the exercise of stock options under any
employee plan or arrangements,  or upon the exercise,  conversion or exchange of
securities  hereafter issued by the Company,  or as otherwise  determined by the
Board of Directors, only shares of Common Stock issued prior to the Distribution
Date will be issued with Rights.

      In the event that (i) the Company is the surviving corporation in a merger
or other  business  combination  with an Acquiring  Person (or any  associate or
affiliate thereof) and its Common Stock remains outstanding and unchanged,  (ii)
any person shall acquire beneficial  ownership of more than twenty percent (20%)
of the  outstanding  shares of Common  Stock  (except  pursuant  to (A)  certain
consolidations  or mergers  involving  the Company or sales or  transfers of the
combined assets,  cash flow or earning power of the Company and its subsidiaries
or (B) an offer for all  outstanding  shares of Common Stock at a price and upon
terms and conditions  which the Board of Directors  determines to be in the best
interests  of the  Company  and its  stockholders),  or  (iii)  there  occurs  a
reclassification  of  securities,  a  recapitalization  of the Company or any of
certain  business   combinations  or  other  transactions  (other  than  certain
consolidations  and mergers  involving the Company and sales or transfers of the
combined assets, cash flow or earning power of the Company and its subsidiaries)
involving  the  Company  or any of its  subsidiaries  which  has the  effect  of
increasing by more than one percent (1%) the proportionate share of any class of
the  outstanding  equity  securities  of the Company or any of its  subsidiaries
beneficially  owned  by an  Acquiring  Person  (or any  associate  or  affiliate
thereof),  each holder of a Right (other than the  Acquiring  Person and certain
related  parties)  will  thereafter  have the right to receive,  upon  exercise,
Common Stock (or, in certain  circumstances,  cash, property or other securities
of the  Company)  having a value  equal to two times the  Purchase  Price of the
Right. Notwithstanding any of the foregoing,  following the occurrence of any of
the events  described in this paragraph,  all Rights that are, or (under certain
circumstances specified in the Rights Agreement) were, beneficially owned by any
Acquiring  Person will be null and void. The events  described in this paragraph
are referred to as "Flip-in Events."

      For example, at a Purchase Price of $60.00 per Right, each Right not owned
by an Acquiring Person (or by certain related parties or transferees)  following
an event  set forth in the  preceding  paragraph  would  entitle  its  holder to
purchase $120.00 worth of Common Stock (or other consideration,  as noted above)
for  $60.00.  Assuming  that the Common  Stock had a per share  market  price of
$10.00 at such  time,  the  holder of each  valid  Right  would be  entitled  to
purchase twelve shares of Common Stock for $60.00.

      In the event that, at any time following the Stock  Acquisition  Date, (i)
the Company shall enter into a merger or other business combination  transaction
in which the Company is not the surviving  corporation,  (ii) the Company is the
surviving corporation in a consolidation, merger or similar transaction pursuant
to which all or part of the outstanding  shares of Common Stock are changed into
or exchanged  for stock or other  securities  of any other person or cash or any
other  property  or (iii)  more than 50% of the  combined  assets,  cash flow or
earning power of the Company and its  subsidiaries  is sold or  transferred  (in
each case other than certain  consolidations  with,  mergers  with and into,  or
sales of assets, cash flow or earning power by or to subsidiaries of the Company
as specified in the Rights  Agreement),  each holder of a Right  (except  Rights
which  previously have been voided as set forth above) shall thereafter have the
right to receive, upon exercise,  common stock of the acquiring company having a
value equal to two times the Purchase Price of the Right.  The events  described
in this  paragraph are referred to as  "Flip-over  Events."  Flip-in  Events and
Flip-over Events are referred to collectively as "Triggering Events."

      The Purchase Price payable,  the number and kind of shares covered by each
Right and the number of Rights  outstanding  are subject to adjustment from time
to time to  prevent  dilution  (i) in the  event of a stock  dividend  on,  or a
subdivision,  combination or  reclassification  of, the Preferred Stock, (ii) if
holders of the Preferred Stock are granted  certain rights,  options or warrants
to subscribe for Preferred Stock or securities  convertible into Preferred Stock
at less than the current market price of the Preferred  Stock, or (iii) upon the
distribution  to holders of the  Preferred  Stock of evidences of  indebtedness,
cash (excluding regular quarterly cash dividends),  assets (other than dividends
payable in Preferred Stock) or subscription rights or warrants (other than those
referred to in (ii) immediately above).

      With certain  exceptions,  no  adjustment  in the  Purchase  Price will be
required until cumulative adjustments amount to at least one percent (1%) of the
Purchase  Price.  No  fractional  shares of  Preferred  Stock are required to be
issued (other than fractions which are integral  multiples of one one-thousandth
(1/1,000) of a share of Preferred  Stock) and, in lieu thereof,  the Company may
make an adjustment  in cash based on the market price of the Preferred  Stock on
the trading date immediately prior to the date of exercise.

      At any time after any  person or group  becomes  an  Acquiring  Person and
prior to the  acquisition by such person or group of fifty percent (50%) or more
of the outstanding shares of Common Stock, the Board of Directors of the Company
may,  without  payment of the Purchase Price by the holder,  exchange the Rights
(other than Rights owned by such person or group,  which will become  void),  in
whole or in part,  for shares of Common  Stock at an exchange  ratio of one-half
(1/2)  the  number  of shares  of  Common  Stock  (or in  certain  circumstances
Preferred Stock) for which a Right is exercisable  immediately prior to the time
of the Company's decision to exchange the Rights (subject to adjustment).

      At any time until the Stock  Acquisition  Date, the Company may redeem the
Rights in whole,  but not in part,  at a price of $0.001 per Right  (payable  in
cash, shares of Common Stock or other  consideration  deemed  appropriate by the
Board of  Directors).  Immediately  upon the  action of the  Board of  Directors
ordering  redemption of the Rights, the Rights will terminate and the only right
of the holders of Rights will be to receive the $0.001 redemption price.

      Until a Right is  exercised,  the holder  thereof,  as such,  will have no
rights as a stockholder of the Company, including, without limitation, the right
to vote or to receive  dividends.  While the distribution of the Rights will not
be taxable to stockholders or to the Company,  stockholders may,  depending upon
the circumstances,  recognize taxable income in the event that the Rights become
exercisable  for Common  Stock (or other  consideration)  of the  Company or for
common stock of an acquiring company as set forth above or in the event that the
Rights are redeemed.

      Other than those  provisions  relating to the principal  economic terms of
the Rights,  any of the provisions of the Rights Agreement may be amended by the
Board of  Directors  of the  Company at any time  during the period in which the
Rights are redeemable. At any time when the Rights are no longer redeemable, the
provisions  of the  Rights  Agreement  may be  amended by the Board only if such
amendment does not adversely affect the interest of holders of Rights (excluding
the interest of any Acquiring Person); provided,  however, that no amendment may
cause the Rights again to become redeemable.

      A copy of the Rights  Agreement  has been filed  with the  Securities  and
Exchange Commission as an Exhibit to a Registration  Statement on Form 8-A filed
on [March ], 1999. A copy of the Rights  Agreement  is available  free of charge
from the Rights Agent.  This summary  description of the Rights does not purport
to be complete  and is  qualified  in its  entirety by  reference  to the Rights
Agreement, which is incorporated herein by reference.




<PAGE 67>

Exhibit 4
IMMEDIATE                                     Contact:
                                              W.A. Bowen
                                              Vice President - Finance
                                              Phone:  843-520-4835



                    AAON, INC. ADOPTS STOCKHOLDER RIGHTS PLAN


TULSA, Oklahoma,  February 19, 1999... AAON, Inc. [Nasdaq: AAON] (the "Company")
today  announced  that its Board of Directors has adopted a  Stockholder  Rights
Plan (the "Plan").

The Plan is designed to protect  the  Company  from unfair or coercive  takeover
attempts and to prevent a potential acquiror from gaining control of the Company
without fairly compensating all of the Company's stockholders.

The Plan  creates a  dividend  of one right  for each  outstanding  share of the
Company's  Common  Stock.  The rights  are  represented  by and traded  with the
Company's  Common Stock.  There are no separate  certificates  or market for the
rights.

The rights do not become  exercisable or trade  separately from the Common Stock
unless one or both of the following  conditions  are met: a public  announcement
that a person has acquired 20% or more of the Common Stock of the Company,  or a
tender  or  exchange  offer is made for 20% or more of the  Common  Stock of the
Company.

Should  either of the  aforementioned  conditions  be met and the rights  become
exercisable,  each right will entitle the holder  thereof to buy  1/1,000th of a
share of the Company's  Series A Preferred Stock at an exercise price of $60.00.
Each share of the Series A  Preferred  Stock will  essentially  be the  economic
equivalent of one share of Common Stock.

Under certain  circumstances the rights entitle the holders to buy the Company's
stock at a 50%  discount.  In the event that (1) the  Company  is the  surviving
corporation in a merger or other business  combination  with an entity that owns
20% or more of the  Company's  outstanding  stock;  (2) any person shall acquire
beneficial ownership of 20% of the Company's  outstanding stock; or (3) there is
any type of  recapitalization of the Company that results in an increase by more
than 1% the  proportionate  share of equity securities of the Company owned by a
person  who owns 20% or more of the  Company's  outstanding  stock,  each  right
holder will have the option to buy for the  purchase  price  Common Stock of the
Company having a value equal to two times the purchase price of the right.

Under certain  circumstances the rights entitle the holders to buy shares of the
acquiror's Common Stock at a 50% discount.  In the event that, at any time after
a person has acquired 20% or more of the Company's Common Stock, (1) the Company
enters  into a merger or other  business  combination  transaction  in which the
Company is not the  surviving  corporation;  (2) the  Company  is the  surviving
corporation  in a  transaction  in  which  all or part of the  Common  Stock  is
exchanged for cash, property or securities of any other person; or (3) more than
50% of the assets, cash flow or earning power of the Company is sold, each right
holder will have the option to buy for the purchase price stock of the acquiring
company having a value equal to two times the purchase price of the right.

The rights may be redeemed by the Company for $0.001 per right at any time until
the first public announcement of the acquisition of beneficial  ownership of 20%
of the Company's  Common Stock.  The  distribution of the rights will be made to
stockholders of record as of March 1, 1999.  Stockholders of record will receive
a separate mailing describing the Plan and a copy of the Plan containing all the
provisions  of the new rights  will be filed with the  Securities  and  Exchange
Commission by March 1, 1999.  The Company's  Plan is similar to those adopted by
many other companies.

AAON,  Inc.   manufactures  rooftop  commercial  heating  and  air  conditioning
equipment,  air  handlers,  condensing  units and air  conditioning  coils.  The
Company  employs over 1,000 in its Tulsa,  Oklahoma and Longview,  Texas plants.



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