MESA INC
8-K, 1996-06-26
CRUDE PETROLEUM & NATURAL GAS
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<PAGE>   1

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549



                                    FORM 8-K

                                 CURRENT REPORT


                       PURSUANT TO SECTION 13 OR 15(D) OF
                      THE SECURITIES EXCHANGE ACT OF 1934


        Date of Report (Date of earliest event reported): JUNE 25 , 1996



                                   MESA INC.
             (Exact name of registrant as specified in its charter)





<TABLE>                         
<S>                             <C>                        <C>
            TEXAS                        1-10874                       75-2394500
(State or other jurisdiction    (Commission File Number)    (IRS Employer Identification No.)
      of incorporation)                                            

</TABLE>
                                                           
                                                                   
                                                                   
              1400 WILLIAMS SQUARE WEST                            
            5205 NORTH O'CONNOR BOULEVARD                          
                    IRVING, TEXAS                                    75039
       (Address of principal executive offices)                    (Zip Code)




       Registrant's telephone number, including area code:  214/444-9001
<PAGE>   2
ITEM 5.  OTHER EVENTS

         At a Special Meeting of Stockholders of MESA Inc. (the "Company") held
on June 25, 1996 (the "Special Meeting"), the Company's stockholders approved
the sale of a minimum of approximately 58.8 million shares and a maximum of
approximately 117.3 million shares of the Company's Series B 8% Cumulative
Convertible Preferred Stock, par value $0.01 per share (the "Series B Preferred
Stock"), to DNR-MESA Holdings, L.P., a Texas limited partnership ("DNR"), the
sole general partner of which is Rainwater, Inc., at a price of $2.26 per share
and on the terms and subject to the conditions set forth in that certain Stock
Purchase Agreement, dated April 26, 1996, between the Company and DNR, as
amended (the "Stock Purchase Agreement").  Copies of the Stock Purchase
Agreement and the form of Statement of Resolution establishing the Series B
Preferred Stock are attached hereto as Exhibits 10 and 4b, respectively, and
incorporated herein by reference.

         At the Special Meeting, the Company's stockholders also approved
certain related amendments to the Company's Amended and Restated Articles of
Incorporation (the "Articles of Incorporation") to (i) increase the number of
authorized shares of the Company's common stock, par value $0.01 per share,
from 100,000,000 to 600,000,000, (ii) increase the number of authorized shares
of the Company's preferred stock, par value $0.01 per share ("Preferred
Stock"), from 10,000,000 to 500,000,000, and (iii) permit the taking of action
by written consent of the holders of any series of Preferred Stock if and to
the extent provided in the resolution of the Board of Directors establishing
any such series.  A copy of the Articles of Amendment to the Amended and
Restated Articles of Incorporation of MESA Inc., dated June 25, 1996, which
reflect such changes to the Articles of Incorporation, is attached hereto as
Exhibit 4c and incorporated herein by reference.

         In addition, on June 25, 1996, Mesa announced the pricing of $325
million principal amount of 10 5/8% senior subordinated notes due July 1, 2006
and its 11 5/8% senior subordinated discount notes due July 1, 2006, which will
yield $150 million in gross proceeds.

         For additional information regarding the foregoing matters, reference
is made to the Company's press releases issued June 25, 1996, copies of which
are attached as Exhibits 99.1 and 99.2 hereto and incorporated herein by 
reference.





                                     -2-
<PAGE>   3
ITEM 7.  FINANCIAL STATEMENTS AND EXHIBITS.

         (c) Exhibits


<TABLE>
             <S>     <C>
             4a.     Amended and Restated Articles of Incorporation of MESA
                     Inc.

             4b.     Statement of Resolution Establishing Series of Shares 
                     Designated Series A Cumulative Convertible Preferred 
                     Stock and Series B Cumulative Convertible Preferred Stock

             4c.     Articles of Amendment to the Amended and Restated Articles
                     of Incorporation of MESA Inc., dated June 25, 1996

             10.     Stock Purchase Agreement, dated April 26, 1996, between
                     the Company and DNR-MESA Holdings, L.P.  (Exhibit 10 to
                     MESA Inc.'s Current Report on Form 8-K dated April 29,
                     1996)

             99.1    Press Release dated June 25, 1996

             99.2    Press Release dated June 25, 1996
</TABLE>





                                     -3-
<PAGE>   4
                                   SIGNATURE

         Pursuant to the requirements of the Securities Exchange Act of 1934,
the Registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.


                                        MESA INC.




Date: June 25, 1996                     By:  /s/ STEPHEN K. GARDNER
                                           -----------------------------------
                                             Stephen K. Gardner
                                             Vice President and Chief Financial
                                             Officer
<PAGE>   5

                              INDEX TO EXHIBITS




<TABLE>
<CAPTION>
 Exhibit 
 Number           Description
 -------          -----------
  <S>     <C>
  4a.     Amended and Restated Articles of Incorporation of MESA
          Inc.

  4b.     Form of Statement of Resolution Establishing Series of
          Shares Designated Series A Cumulative Convertible
          Preferred Stock and Series B Cumulative Convertible
          Preferred Stock

  4c.     Articles of Amendment to the Amended and Restated Articles
          of Incorporation of MESA Inc., dated June 25, 1996

  10.     Stock Purchase Agreement, dated April 26, 1996, between
          the Company and DNR-MESA Holdings, L.P.  (Exhibit 10 to
          MESA Inc.'s Current Report on Form 8-K dated April 29,
          1996)

  99.1    Press Release dated June 25, 1996

  99.2    Press Release dated June 25, 1996
</TABLE>






<PAGE>   1
                                                                      EXHIBIT 4a




                              AMENDED AND RESTATED

                           ARTICLES OF INCORPORATION

                                       OF

                                   MESA INC.



                                  ARTICLE ONE

                 MESA Inc., a Texas corporation (the "Company"), pursuant to
the provisions of Article 4.07 of the Texas Business Corporation Act, hereby
adopts these Amended and Restated Articles of Incorporation, that accurately
copy the Amended and Restated Articles of Incorporation of the Company in
effect on the date hereof, and as further amended by these Amended and Restated
Articles of Incorporation as hereinafter set forth and which contain no other
change in any provisions thereof.

                                  ARTICLE TWO

                 The Amended and Restated Articles of Incorporation of the
Company are amended by these Amended and Restated Articles of Incorporation as
follows:

                 The amendments made by these Amended and Restated Articles of
Incorporation (the "Amendments") alter or change Article IV of the Amended and
Restated Articles of Incorporation and the full text of each provision altered
or added is as set forth in Exhibit A attached hereto.  The Amendments effect a
one-for-five reverse stock split of the authorized shares of Common Stock,
reducing such number from 500,000,000 to 100,000,000, but do not increase the
par value of the Common Stock, which remains at $.01 per share.

                                 ARTICLE THREE

                 The Amendments have been effected in conformity with the
provisions of the Texas Business Corporation Act and such Amended and Restated
Articles of Incorporation were duly adopted by the sole shareholder of the
Company on December 12, 1991.

                                  ARTICLE FOUR

                 On that date there were 1,000 shares of Common Stock
outstanding, all of which were entitled to vote on the Amendments.  All 1,000
shares of Common Stock were voted in favor of the Amendments.



                                     -1-
<PAGE>   2
                                  ARTICLE FIVE

                 The Amended and Restated Articles of Incorporation of the
Company filed with the Secretary of State of the State of Texas on October 10,
1991 are hereby superceded by the Amended and Restated Articles of
Incorporation attached hereto as Exhibit A, which accurately copy the entire
text thereof as amended hereby.

                 EXECUTED AND EFFECTIVE this 31st day of December, 1991.
      
                                        MESA INC.



                                        By: /s/ T. BOONE PICKENS, JR.
                                           ------------------------------------
                                           Name:  T. Boone Pickens, Jr.
                                                -------------------------------
                                           Title: Chairman of the Board and
                                                  Chief Executive Officer
                                                 ------------------------------





                                      -2-
<PAGE>   3





                                                                  EXHIBIT A


                              AMENDED AND RESTATED

                           ARTICLES OF INCORPORATION

                                       OF

                                   MESA INC.


                                   ARTICLE I

                 The name of the corporation is MESA Inc.

                                   ARTICLE II

                 The period of the corporation's duration is perpetual.

                                  ARTICLE III

                 The purpose or purposes for which the corporation is organized
is the transaction of all lawful business for which corporations may be
organized under the Texas Business Corporation Act.

                                   ARTICLE IV

                 The aggregate number of shares that the corporation shall have
the authority to issue is 110,000,000 shares, consisting of 100,000,000 shares
of Common Stock, par value $0.01 per share, and 10,000,000 shares of Preferred
Stock, par value $0.01 per share.

                 The descriptions of the different classes of capital stock of
the corporation and the preferences, designations, relative rights, privileges
and powers, and the restrictions, limitations and qualifications thereof, of
said classes of stock are as follows:

                          Division A - Preferred Stock

                 The shares of Preferred Stock may be divided into and issued
in one or more series, the relative rights and preferences of which series may
vary in any and all respects.  The board of directors of the corporation is
hereby vested with the authority to establish series of Preferred Stock by
fixing and determining all the preferences, limitations and relative rights of
the shares of any series so established, to the extent not provided for in
these articles of incorporation or any amendment hereto, and with the authority
to increase or decrease the number of shares within each such series; provided,
however, that the board of directors may not decrease the number of shares
within a series below the number of shares within such series that is then
issued.  The authority of
<PAGE>   4
the board of directors with respect to each such series shall include, but not
be limited to, determination of the following:

                 (1)      the distinctive designation and number of shares of 
         that series;

                 (2)      the rate of dividend (or the method of calculation
         thereof) payable with respect to shares of that series, the dates,
         terms and other conditions upon which such dividends shall be payable,
         and the relative rights of priority of such dividends to dividends
         payable on any other class or series of capital stock of the
         corporation;

                 (3)      the nature of the dividend payable with respect to
         shares of that series as cumulative, noncumulative or partially
         cumulative, and if cumulative or partially cumulative, from which date
         or dates and under what circumstances.

                 (4)      whether shares of that series shall be subject to
         redemption, and, if made subject to redemption, the times, prices,
         rates, adjustments and other terms and conditions of such redemption
         (including the manner of selecting shares of that series for
         redemption if fewer than all shares of such series are to be
         redeemed);

                 (5)      the rights of the holders of shares of that series in
         the event of voluntary or involuntary liquidation, dissolution or
         winding up of the corporation (which rights may be different if such
         action is voluntary than if it is involuntary), including the relative
         rights of priority in such event as to the rights of the holders of
         any other class or series of capital stock of the corporation;

                 (6)      the terms, amounts and other conditions of any
         sinking or similar purchase or other fund provided for the purchase or
         redemption of shares of that series;

                 (7)      whether shares of that series shall be convertible
         into or exchangeable for shares of capital stock or other securities
         of the corporation or of any other corporation or entity, and, if
         provision be made for conversion or exchange, the times, prices,
         rates, adjustments and other terms and conditions of such conversion
         or exchange;

                 (8)      the extent, if any, to which the holders of shares of
         that series shall be entitled (in addition to any voting rights
         provided by law) to vote as a class or otherwise with respect to the
         election of directors or otherwise;

                 (9)      the restrictions and conditions, if any, upon the
         issue or reissue of any additional Preferred Stock ranking on a parity
         with or prior to shares of that series as to dividends or upon
         liquidation, dissolution or winding up;

                 (10)     any other repurchase obligations of the corporation,
         subject to any limitations of applicable law; and




                                      2

<PAGE>   5
                 (11)    notwithstanding their failure to be included
         in (1) through (10) above, any other designations, preferences,
         limitations or relative rights of shares of that series.
        
Any of the designations, preferences, limitations or relative rights (including
the voting rights) of any series of Preferred Stock may be dependent on facts
ascertainable outside these articles of incorporation.

                 Shares of any series of Preferred Stock shall have no voting
rights except as required by law or as provided in the preferences, limitations
and relative rights of such series.

                           Division B - Common Stock

                 1.       Dividends.  Dividends may be paid on the Common Stock
out of any assets of the corporation available for such dividends subject to
the rights of all outstanding shares of capital stock ranking senior to the
Common Stock in respect of dividends.

                 2.       Distribution of Assets.  In the event of any
liquidation, dissolution or winding up of the corporation, after there shall
have been paid to or set aside for the holders of capital stock ranking senior
to the Common Stock in respect of rights upon liquidation, dissolution or
winding up the full preferential amounts to which they are respectively
entitled, the holders of the Common Stock shall be entitled to receive, pro
rata, all of the remaining assets of the corporation available for distribution
to its shareholders.

                 3.       Voting Rights.  The holders of the Common Stock shall
be entitled to one vote per share for all purposes upon which such holders are
entitled to vote, except for the election of directors, which is subject to
cumulative voting.

                              Division C - General

                 1.       No Preemptive Rights.  No shareholder of the
corporation shall by reason of his holding shares of any class have any
preemptive or preferential right to acquire or subscribe for any additional,
unissued or treasury shares of any class of the corporation now or hereafter to
be authorized, or any notes, debentures, bonds or other securities convertible
into or carrying any right, option or warrant to subscribe to or acquire shares
of any class now or hereafter to be authorized, whether or not the issuance of
any such shares, or such notes, debentures, bonds or other securities, would
adversely affect the dividends or voting or other rights of such shareholder,
and the board of directors may issue or authorize the issuance of shares of any
class, or any notes, debentures, bonds or other securities convertible into or
carrying rights, options or warrants to subscribe to or acquire shares of any
class, without offering any such shares of any class, either in whole or in
part, to the existing shareholders of any class.

                 2.  Share Dividends.  Subject to any restrictions in favor of
any series of Preferred Stock provided in the relative rights and preferences
of such series, the corporation may pay a share dividend in shares of any class
or series of capital stock of the corporation to the holders of shares of any
class or series of capital stock of the corporation.




                                      3

<PAGE>   6
                                   ARTICLE V

                 The corporation will not commence business until it has
received for the issuance of its shares consideration of the value of $1,000,
consisting of money, labor done or property actually received.

                                   ARTICLE VI

                 The street address of the corporation's initial registered
office is 350 N. St. Paul, Dallas, Texas 75201 and the name of its initial
registered agent at such address is C T Corporation System.

                                  ARTICLE VII

                 No action required to be taken or which may be taken at any
annual or special meeting of shareholders of the corporation may be taken
without a meeting, and the power of shareholders to consent in writing, without
a meeting, to the taking of any action is specifically denied.

                                  ARTICLE VIII

                 Special meetings of shareholders may be called by the
corporation's chief executive officer or the board of directors.  Subject to
the provisions of the corporation's bylaws governing special meetings, holders
of not less than twenty percent of the outstanding shares of stock entitled to
vote at the proposed special meeting may also call a special meeting of
shareholders by furnishing the corporation a written request which states the
purpose or purposes of the proposed meeting in the manner set forth in the
bylaws.

                                   ARTICLE IX

                 The number of directors of the corporation shall be fixed by,
or in the manner provided in, the bylaws.  The number of directors constituting
the initial board of directors is one, and the name and address of the person
who is to serve as director until the first annual meeting of the shareholders
or until such director's successor is elected and qualified is:

<TABLE>
<CAPTION>
                 Name                            Address
                 ----                            -------
         <S>                                     <C>
         T. Boone Pickens                        2600 Trammell Crow Center
                                                 2001 Ross Avenue
                                                 Dallas, Texas  75201
</TABLE>

                 The election and removal of directors is subject to cumulative
voting as provided in the Texas Business Corporation Act and the provisions of
the corporation's bylaws.





                                      4
<PAGE>   7
                                   ARTICLE X

                 A director of the corporation shall not be liable to the
corporation or its shareholders for monetary damages for an act or omission in
the director's capacity as a director, except that this article does not
eliminate or limit the liability of a director for:  (1) a breach of a
director's duty of loyalty to the corporation or its shareholders; (2) an act
or omission not in good faith or that involves intentional misconduct or a
knowing violation of the law; (3) a transaction from which a director received
an improper benefit, whether or not the benefit resulted from an action taken
within the scope of the director's office; (4) an act or omission for which the
liability of a director is expressly provided for by statute.

                 If the Texas Miscellaneous Corporation Laws Act or the Texas
Business Corporation Act ("TBCA") is amended to authorize action further
eliminating or limiting the personal liability of directors, then the liability
of a director of the corporation shall be eliminated or limited to the fullest
extent permitted by such statutes, as so amended.  Any repeal or modification
of this article shall not adversely affect any right or protection of a
director of the corporation existing at the time of such repeal or
modification.

                                   ARTICLE XI

                 The vote of shareholders required for approval of (1) any plan
of merger, consolidation, or exchange for which the TBCA requires a shareholder
vote, (2) any disposition of assets for which the TBCA requires a shareholder
vote, (3) any dissolution of the corporation for which the TBCA requires a
shareholder vote, and (4) any amendment of the Articles of Incorporation of the
corporation for which the TBCA requires a shareholder vote, shall be (in lieu
of any greater vote required by the TBCA and together with any additional vote
required by Article XII) the affirmative vote of the holders of a majority of
the outstanding shares entitled to vote thereon, unless any class or series of
shares is entitled to vote as a class thereon, in which event the vote required
shall be the affirmative vote of the holders of a majority of the outstanding
shares within each class or series of shares entitled to vote thereon as a
class and at least a majority of the outstanding shares otherwise entitled to
vote thereon.

                                  ARTICLE XII

                 (a)      In addition to any affirmative vote required by law
or these Articles of Incorporation, and except as otherwise expressly provided
in paragraph (b) of this Article XII:

                          (i)     any merger, consolidation or share exchange
         of the corporation or any subsidiary of the corporation with (A) any
         Related Person or (B) any other Person (whether or not itself a
         Related Person) which is, or after such merger, consolidation or share
         exchange would be, an Affiliate of a Related Person; or

                          (ii)    any sale, lease, exchange, mortgage, pledge,
         transfer or other disposition by the corporation or any subsidiary to
         any Related Person or any Affiliate of any Related Person, or by any
         Related Person or any Affiliate of any Related Person to the





                                      5
<PAGE>   8
         corporation or any subsidiary, of any assets or properties having an
         aggregate Fair Market Value of $10,000,000 or more; or

                          (iii)   any issuance or transfer by the corporation
         or any subsidiary of the corporation of any securities of the
         corporation or any subsidiary of the corporation to any Related Person
         or any Affiliate of any Related Person (except (A) pursuant to the
         exercise, exchange or conversion of securities exercisable for,
         exchangeable for or convertible into stock of the corporation or any
         subsidiary which securities were acquired by the Related Person prior
         to becoming a Related Person, or (B) pursuant to a dividend or
         distribution paid or made, or the exercise, exchange or conversion of
         securities exercisable for, exchangeable for or convertible into stock
         of the corporation or subsidiary which security is distributed, pro
         rata to all holders of a class or series of stock of the corporation
         subsequent to the time the Related Person became such, and provided in
         the case of this clause (B) that there is not any increase of more
         than 1% in the Related Person's proportionate share of the stock of
         any class or series of the corporation or of the Voting Stock of the
         corporation); or

                          (iv)    any dissolution of the corporation
         voluntarily caused or proposed by or on behalf of a Related Person or
         any Affiliate of any Related Person; or

                          (v)     any reclassification of securities (including
         any reverse stock split) or recapitalization of the corporation, or
         any merger, consolidation or share exchange of the corporation with
         any of its subsidiaries or any other transaction (whether or not with
         or into or otherwise involving a Related Person) which has the effect,
         either directly or indirectly, of increasing by more than 1% the
         proportionate share of the outstanding stock of any class or series,
         the securities convertible into stock of any class or series, or all
         the outstanding Voting Stock of the corporation or any subsidiary of
         the corporation which is directly or indirectly owned by any Related
         Person or any Affiliate of any Related Person; or

                          (vi)    any series or combination of transactions
         having, directly or indirectly, the same effect as any of the
         foregoing; or

                          (vii)   any agreement, contract or other arrangement
         providing, directly or indirectly, for any of the foregoing

shall require the affirmative vote of the holders of not less than 80% of the
then outstanding Voting Stock held by shareholders voting together as a single
class.  Such affirmative vote shall be required notwithstanding the fact that
no vote may be required, or that a lesser percentage may be specified, by law,
elsewhere in these Articles of Incorporation or in any agreement with any
national securities exchange or otherwise.

                 (b)      The provisions of paragraph (a) shall not be
applicable to any particular Business Combination, and such Business
Combination shall require only such affirmative vote as is required by law and
any other provision of these Articles of Incorporation, if all of the
conditions specified in either of the following subparagraphs (i) and (ii) are
met:





                                      6
<PAGE>   9
                          (i)      the cash, property, securities or other 
         consideration to be received per share by holders of each and every
         outstanding class or series of shares of the corporation in the
         Business Combination is, with respect to each such class or series,
         either (A) the same in form and amount per share as that paid by the
         Related Person in a tender offer in which such Related Person acquired
         at least 50% of the outstanding stock of such class or series and which
         was consummated not more than one year prior to the date of such
         Business Combination or (B) not less in amount (as to cash) or Fair
         Market Value as of the date of the determination of the Highest Per
         Share Price (as to property, securities or other consideration) than
         the Highest Per Share Price applicable to such class or series of
         shares; provided that in the event of any Business Combination in which
         the corporation survives, any shares retained by the holders thereof
         shall constitute consideration other than cash for purposes of this
         subparagraph (i); or
        
                          (ii)    a majority of the Continuing Directors shall
         have expressly approved such Business Combination either in advance of
         or subsequent to such Related Person's having become a Related Person.

                 In the case of any Business Combination with a Related Person
to which subparagraph (i) above applies, a majority of the Continuing Directors
shall promptly following the request of a Related Person determine the Highest
Per Share Price for each class or series of stock of the corporation.  Such
determination shall be announced prior to the meeting at which holders of
shares vote on the Business Combination.  Such determination shall be final,
unless the Related Person becomes the Beneficial Owner of additional shares
after the date of the earlier determination, in which case the Continuing
Directors will make a new determination as to the Highest Per Share Price for
each class or series of shares prior to the consummation of the Business
Combination.

                 A Related Person shall be deemed to have acquired a share at
the time that such Related Person became the Beneficial Owner thereof.  With
respect to shares owned by Affiliates, Associates and other Persons whose
ownership is attributable to a Related Person, if the price paid by such
Related Person for such shares is not determinable by a majority of the
Continuing Directors, the price so paid shall be deemed to be the higher of (i)
the price paid upon the acquisition thereof by the Affiliate, Associate or
other Person or (ii) the Share Price of the shares in question at the time when
the Related Person became the Beneficial Owner thereof.

                 (c)      For purposes of this Article XII:

                          (i)     The term "Affiliate," used to indicate a
         relationship to a specified Person, shall mean a Person that directly,
         or indirectly through one or more intermediaries, controls, is
         controlled  by, or is under common control with, such specified
         Person.

                          (ii)    The term "Associate," used to indicate a
         relationship with a specified Person, shall mean (A) any corporation,
         partnership or other organization (other than the corporation or any
         wholly owned subsidiary of the corporation) of which such specified
         Person is an officer or partner or is, directly or indirectly, the
         Beneficial Owner of 10% or more of any class of equity securities; (B)
         any trust or other estate in which such specified





                                      7
<PAGE>   10
         Person has a beneficial interest of 10% or more or as to which such
         specified Person serves as trustee or in a similar fiduciary capacity;
         (C) any Person who is a director or officer of such specified Person
         or any of its parents or subsidiaries (other than the corporation or
         any wholly owned subsidiary of the corporation); and (D) any relative
         or spouse of such specified Person or of any of its Associates, or any
         relative of any such spouse, who has the same home as such specified
         Person or such Associate.

                          (iii)   A Person shall be a "Beneficial Owner" of any
         stock (A) which such Person or any of its Affiliates or Associates
         beneficially owns, directly or indirectly; or (B) which such Person or
         any of its Affiliates or Associates has, directly or indirectly, (1)
         the right to acquire (whether such right is exercisable immediately or
         only after the passage of time), pursuant to any agreement,
         arrangement or understanding or upon the exercise of conversion
         rights, exchange rights, warrants or options, or otherwise, or (2) the
         right to vote pursuant to any agreement, arrangement or understanding;
         or (C) which is beneficially owned, directly or indirectly, by any
         other Person with which such Person or any of its Affiliates or
         Associates has any agreement, arrangement or understanding for the
         purpose of acquiring, holding, voting or disposing of any stock; or
         (D) of which such Person would be the Beneficial Owner pursuant to the
         terms of Rule 13d-3 of the Securities Exchange Act of 1934 (the
         "Exchange Act"), as in effect on September 1, 1991; notwithstanding
         the foregoing, no person shall be deemed to be, or to have been, a
         Beneficial Owner of any stock of the corporation owned by Mesa Limited
         Partnership, a Delaware limited partnership ("MLP"), prior to its
         distribution of such stock to its unitholders.  Stock shall be deemed
         "Beneficially Owned" by the Beneficial Owner or Owners thereof.

                          (iv)    The term "Business Combination" shall mean
         any transaction which is referred to in any one or more of clauses (i)
         through (vii) of paragraph (a) of this Article XII.

                          (v)     The term "Continuing Director" shall mean,
         with respect to a Business Combination with a Related Person, any
         director of the corporation who is unaffiliated with the Related
         Person and was a director prior to the time that the Related Person
         became a Related Person, and any successor of a Continuing Director
         who is unaffiliated with the Related Person and is recommended or
         nominated to succeed a Continuing Director by a majority of the
         Continuing Directors.  Without limiting the generality of the
         foregoing, a director shall be deemed to be affiliated with a Related
         Person if such director (A) is an officer, director, employee or
         general partner of such Related Person; (B) is an Affiliate or
         Associate of such Related Person; (C) is a relative or spouse of such
         Related Person or of any such officer, director, general partner,
         Affiliate or Associate; (D) performs services, or is a member,
         employee, stockholder or unitholder of any organization which performs
         services, for such Related Person or any Affiliate of such Related
         Person, or is a relative or spouse of any such Person (other than the
         corporation and its subsidiaries); or (E) was nominated for election
         as a director by such Related Person.

                          (vi)    The term "Fair Market Value" shall mean, in
         the case of securities, the average of the closing sale prices during
         the 30-day period immediately preceding the date





                                      8
<PAGE>   11
         in question of such security on the principal United States securities
         exchange registered under the Exchange Act on which such security is
         listed (or the composite tape therefor) or, if such securities are not
         listed on any such exchange, the average of the closing bid quotations
         with respect to such security during the 30-day period preceding the
         date in question on the NASDAQ national market system or any similar
         system then in use or, if no such quotations are available, the fair
         market value on the date in question of such security as determined in
         good faith by a majority of the Continuing Directors; and in the case
         of property other than cash or securities, the fair market value of
         such property on the date in question as determined in good faith by a
         majority of the Continuing Directors.

                          (vii)   The term "Highest Per Share Price" shall mean
         (A) as to any class or series of stock of which the Related Person
         Beneficially Owns 10% or more of the outstanding shares, the highest
         price that can be determined to have been paid for any share or shares
         of that class or series by such Related Person in a transaction that
         either (1) resulted in such Related Person Beneficially Owning 10% or
         more thereof or (2) was effected at time when such Related Person
         Beneficially Owned more than 10% thereof, (B) as to any class or
         series of stock of which the Related Person Beneficially Owns shares,
         but not more than 10% of the outstanding shares, the highest price
         that can be determined to have been paid at any time by such Related
         Person for any share or shares of that class or series that are then
         Beneficially Owned by such Related Person or (C) as to any other class
         or series of stock, the amount determined by a majority of the
         Continuing Directors, on whatever basis they believe is appropriate,
         to be the per share price equivalent of the highest price that can be
         determined to have been paid at any time by the Related Person for any
         other class or series of stock.  In determining the Highest Per Share
         Price, all purchases by the Related Person shall be taken into account
         regardless of whether the shares were purchased before or after the
         Related Person became a Related Person and the Highest Per Share Price
         will be appropriately adjusted to take into account (W) distributions
         paid or payable in stock, (X) subdivisions of outstanding stock, (Y)
         combinations of shares of stock into a smaller number of shares and
         (Z) similar events.  Additionally, for purposes of this subparagraph
         (vii), the price of any stock received by a shareholder as a
         distribution from MLP in respect of MLP units shall be the price paid
         for such MLP units as appropriately adjusted to account for the number
         of shares received for each unit in connection with the dissolution of
         MLP.

                          (viii)  The term "Person" shall mean any individual,
         corporation, association, partnership, joint venture, trust, estate or
         other entity or organization.

                          (ix)    The term "Related Person" shall mean any
         Person (other than the corporation or any subsidiary and other than
         any profit-sharing, employee ownership or other employee benefit plan
         of the corporation or any subsidiary or any trustee of or fiduciary
         with respect to any such plan when acting in such capacity) who or
         which (A) is the Beneficial Owner of more than 20% of the aggregate
         voting power of all outstanding stock of the corporation; or (B) is an
         Affiliate of the corporation and at any time within the two- year
         period immediately prior to the date in question was the Beneficial
         Owner of more than 20% of the aggregate voting power of all
         outstanding stock of the corporation; or (C) is an assignee of or has
         otherwise succeeded to any shares of stock of the corporation which
         were





                                      9
<PAGE>   12
         at any time within the two-year period immediately prior to the date
         in question Beneficially Owned by any Related Person, if such
         assignment or succession shall have occurred in the course of a
         privately negotiated transaction rather than an open market
         transaction.  For the purposes of determining whether a Person is a
         Related Person, the number of shares of any class or series deemed to
         outstanding shall include shares of such class or series of which the
         Person is deemed the Beneficial Owner, but shall not include any other
         shares which may be issuable pursuant to any agreement, arrangement or
         understanding, or upon exercise of conversion rights, warrants or
         options, otherwise.

                          (x)     The term "Voting Stock" shall mean all
         outstanding shares of capital stock the corporation entitled to vote
         generally in the election of directors, considered for the purpose of
         this Article XII as one class.  If the corporation has shares of
         Voting Stock entitled to more or less than one vote for any such
         share, each reference in this Article XII to a proportion or
         percentage in voting power of Voting Stock shall be calculated by
         reference to the portion or percentage of votes entitled to be cast by
         the holders of such shares.

                 (d)      Nothing contained in this Article XII shall be
construed to relieve any Related Person from any fiduciary obligation imposed
by law.

                 (e)      Notwithstanding any other provision of this Articles
of Incorporation (and notwithstanding the fact that a lesser percentage may be
specified by law), the affirmative vote of the holders of not less than 80% of
the then outstanding Voting Stock held by shareholders, voting together as a
single class, shall be required to amend or repeal, or adopt any provisions
inconsistent with, this Article XII.





                                      10
<PAGE>   13


                      STATEMENT OF RESOLUTION ESTABLISHING
                                SERIES OF SHARES

                                   designated

                 SERIES A JUNIOR PARTICIPATING PREFERRED STOCK

                                       of

                                   MESA INC.

                        Pursuant to Article 2.13D of the
                         Texas Business Corporation Act

                 Pursuant to the provisions of Article 2.13D of the Texas
Business Corporation Act, the undersigned corporation submits the following
statement for the purpose of establishing and designating a series of shares of
its Preference Stock, without par value, designated "Series A Preference Stock"
and fixing and determining the relative rights and preferences thereof:

                 1.       The name of the corporation is MESA INC. (the 
"Corporation").

                 2.       The following resolution, establishing and
designating a series of shares and fixing and determining the relative rights
and preferences thereof, was duly adopted by all necessary action on the part
of the Corporation, consisting of due adoption by the Board of Directors of the
Corporation at a meeting duly held on July 6, 1995:

                 RESOLVED, that pursuant to the authority vested in the Board
         of Directors of this Corporation in accordance with the provisions of
         the Amended and Restated Articles of Incorporation, a series of
         Preferred Stock, par value $.01 per share, of the Corporation be and
         hereby is created, and that the designation and number of shares
         thereof and the preferences, limitations and relative rights,
         including voting rights of the shares of such series and the
         qualifications, limitations and restrictions thereof are as follows:

                 SERIES A JUNIOR PARTICIPATING PREFERRED STOCK

1.       Designation and Amount.  There shall be a series of Preferred Stock 
that shall be designated as "Series A Junior Participating Preferred Stock,"
and the number of shares constituting such series shall be 1,000,000.  Such
number of shares may be increased or decreased by resolution of the Board of
Directors; provided, however, that no decrease shall reduce the number of
shares of Series A Junior Participating Preferred Stock to less than the number
of shares then issued and outstanding
        




<PAGE>   14
plus the number of shares issuable upon exercise of outstanding rights, options
or warrants or upon conversion of outstanding securities issued by the
Corporation.
        
                 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 Junior Participating Preferred Stock with
respect to dividends, the holders of shares of Series A Junior Participating
Preferred Stock, in preference to the holders of shares of any class or series
of stock of the Corporation ranking junior to the Series A Junior Participating
Preferred Stock, shall be entitled to receive, when, as and if declared by the
Board of Directors out of funds legally available for the purpose, quarterly
dividends payable in cash on the first day of March, June, September and
December in each year (each such date being referred to herein as a "Quarterly
Dividend Payment Date"), commencing on the first Quarterly Dividend Payment
Date after the first issuance of a share or fraction of a share of Series A
Junior Participating Preferred Stock, in an amount per share (rounded to the
nearest cent) equal to the greater of (a) $1 or (b) the Adjustment Number (as
defined below) times the aggregate per share amount of all cash dividends, and
the Adjustment Number times the aggregate per share amount (payable in kind) of
all non-cash dividends or other distributions other than a dividend payable in
shares of Common Stock or a subdivision of the outstanding shares of Common
Stock (by reclassification or otherwise), declared on the Common Stock, par
value $.01 per share, of the Corporation (the "Common Stock") since the
immediately preceding Quarterly Dividend Payment Date, or, with respect to the
first Quarterly Dividend Payment Date, since the first issuance of any share or
fraction of a share of Series A Junior Participating Preferred Stock.  The
"Adjustment Number" shall initially be 100.  In the event the Corporation shall
at any time after July 6, 1995 (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.

                 (B)      The Corporation shall declare a dividend or
distribution on the Series A Junior Participating Preferred Stock as provided
in paragraph (A) above immediately after it declares a dividend or distribution
on the Common Stock (other than a dividend payable in shares of Common Stock);
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 $1 per share on the Series A Junior Participating 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 Junior Participating Preferred Stock from the
Quarterly Dividend Payment Date next





                                     -2-

<PAGE>   15
preceding the date of issue of such shares of Series A Junior Participating
Preferred Stock, unless the date of issue of such shares is prior to the record
date for the first Quarterly Dividend Payment Date, in which case dividends on
such shares shall begin to accrue from the date of issue of such shares, or
unless the date of issue is a Quarterly Dividend Payment Date or is a date
after the record date for the determination of holders of shares of Series A
Junior Participating Preferred Stock entitled to receive a quarterly dividend
and before such Quarterly Dividend Payment Date, in either of which events such
dividends shall begin to accrue and be cumulative from such Quarterly Dividend
Payment Date.  Accrued but unpaid dividends shall not bear interest.  Dividends
paid on the shares of Series A Junior Participating Preferred Stock in an
amount less than the total amount of such dividends at the time accrued and
payable on such shares shall be allocated pro rata on a share-by-share basis
among all such shares at the time outstanding.  The Board of Directors may fix
a record date for the determination of holders of shares of Series A Junior
Participating Preferred Stock entitled to receive payment of a dividend or
distribution declared thereon, which record date shall be no more than 30 days
prior to the date fixed for the payment thereof.

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

                 (A)      Each share of Series A Junior Participating Preferred
Stock shall entitle the holder thereof to a number of votes equal to the
Adjustment Number on all matters submitted to a vote of the stockholders of the
Corporation.

                 (B)      Except as otherwise provided herein, in the Amended
and Restated Articles of Incorporation or by law, the holders of shares of
Series A Junior Participating Preferred Stock, the holders of shares of any
other class or series entitled to vote with the Common Stock and the holders of
shares of Common Stock shall vote together as one class on all matters
submitted to a vote of stockholders of the Corporation.

                 (C)(i)   If at any time dividends on any Series A Junior
Participating Preferred Stock shall be in arrears in an amount equal to six
quarterly dividends thereon, the occurrence of such contingency shall mark the
beginning of a period (herein called a "default period") that shall extend
until such time when all accrued and unpaid dividends for all previous
quarterly dividend periods and for the current quarterly dividend period on all
shares of Series A Junior Participating Preferred Stock then outstanding shall
have been declared and paid or set apart for payment.  During each default
period, (1) the number of Directors shall be increased by two, effective as of
the time of election of such Directors as herein provided, and (2) the holders
of Preferred Stock (including holders of the Series A Junior Participating
Preferred Stock) upon which these or like voting rights have been conferred and
are exercisable (the "Voting Preferred Stock") with dividends in arrears in an
amount equal to six quarterly dividends thereon, voting as a class,
irrespective of series, shall have the right to elect such two Directors.

                 (ii)     During any default period, such voting right of the
holders of Series A Junior Participating Preferred Stock may be exercised
initially at a special meeting called pursuant to



                                     -3-

<PAGE>   16
subparagraph (iii) of this Section 3(C) or at any annual meeting of
shareholders, and thereafter at annual meetings of shareholders, provided that
such voting right shall not be exercised unless the holders of at least
one-third in number of the shares of Voting Preferred Stock outstanding shall
be present in person or by proxy.  The absence of a quorum of the holders of
Common Stock shall not affect the exercise by the holders of Voting Preferred
Stock of such voting right.  At any meeting at which the holders of Voting
Preferred Stock shall exercise such voting right initially during an existing
default period, they shall have the right, voting as a class, to elect
Directors to fill such vacancies, if any, in the Board of Directors as may then
exist up to two Directors or, if such right is exercised at an annual meeting,
to elect two Directors.  If the number that may be so elected at any special
meeting does not amount to the required number, the holders of the Voting
Preferred Stock shall have the right to make such increase in the number of
Directors as shall be necessary to permit the election by them of the required
number.  After the holders of the Voting Preferred Stock shall have exercised
their right to elect Directors in any default period and during the continuance
of such period, the number of Directors shall not be increased or decreased
except by vote of the holders of Voting Preferred Stock as herein provided or
pursuant to the rights of any equity securities ranking senior to or pari passu
with the Series A Junior Participating Preferred Stock.

                 (iii)    Unless the holders of Voting Preferred Stock shall,
during an existing default period, have previously exercised their right to
elect Directors, the Board of Directors may order, or any shareholder or
shareholders owning in the aggregate not less than ten percent of the total
number of shares of Voting Preferred Stock outstanding, irrespective of series,
may request, the calling of a special meeting of the holders of Voting
Preferred Stock, which meeting shall thereupon be called by the Chairman of the
Board, the President, a Vice President or the Secretary of the Corporation.
Notice of such meeting and of any annual meeting at which holders of Voting
Preferred Stock are entitled to vote pursuant to this paragraph (C)(iii) shall
be given to each holder of record of Voting Preferred Stock by mailing a copy
of such notice to him at his last address as the same appears on the books of
the Corporation.  Such meeting shall be called for a time not earlier than 20
days and not later than 60 days after such order or request or, in default of
the calling of such meeting within 60 days after such order or request, such
meeting may be called on similar notice by any shareholder or shareholders
owning in the aggregate not less than ten percent of the total number of shares
of Voting Preferred Stock outstanding.  Notwithstanding the provisions of this
paragraph (C)(iii), no such special meeting shall be called during the period
within 60 days immediately preceding the date fixed for the next annual meeting
of the shareholders.

                 (iv)     In any default period, after the holders of Voting
Preferred Stock shall have exercised their right to elect Directors voting as a
class, (x) the Directors so elected by the holders of Voting Preferred Stock
shall continue in office until their successors shall have been elected by such
holders or until the expiration of the default period, and (y) any vacancy in
the Board of Directors may (except as provided in paragraph (C)(ii) of this
Section 3) be filled by vote of majority of the remaining Directors theretofore
elected by the holders of the class or classes of stock which elected the
Director whose office shall have become vacant.  References in this paragraph
(C) to Directors elected by the holders of a particular class or classes of
stock shall include Directors elected by such Directors to fill vacancies as
provided in clause (y) of the foregoing sentence.



                                     -4-

<PAGE>   17
                 (v)      Immediately upon the expiration of a default period,
(x) the right of the holders of Voting Preferred Stock as a class to elect
Directors shall cease, (y) the term of any Directors elected by the holders of
Voting Preferred Stock as a class shall terminate and (z) the number of
Directors shall be such number as may be provided for in the Amended and
Restated Articles of Incorporation or By-Laws irrespective of any increase made
pursuant to the provisions of paragraph (C) of this Section 3 (such number
being subject, however, to change thereafter in any manner provided by law or
in the Amended and Restated Articles of Incorporation or By-Laws).  Any
vacancies in the Board of Directors effected by the provisions of clauses (y)
and (z) in the preceding sentence may be filled by a majority of the remaining
Directors.

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

                 4.       Certain Restrictions.

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

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

                          (ii)    declare or pay dividends on or make any other
         distributions on any shares of stock ranking on a parity (either as to
         dividends or upon liquidation, dissolution or winding up) with the
         Series A Junior Participating Preferred Stock, except dividends paid
         ratably on the Series A Junior Participating Preferred Stock and all
         such parity stock on which dividends are payable or in arrears in
         proportion to the total amounts to which the holders of all such
         shares are then entitled; or

                          (iii)   redeem or purchase or otherwise acquire for
         consideration any shares of Series A Junior Participating Preferred
         Stock, or any shares of stock ranking on a parity with the Series A
         Junior Participating Preferred Stock, except in accordance with a
         purchase offer made in writing or by publication (as determined by the
         Board of Directors) to all holders of Series A Junior Participating
         Preferred Stock, or to all such holders and the holders of any such
         shares ranking on a parity therewith, upon such terms as the Board of
         Directors, after consideration of the respective annual dividend rates
         and other relative rights and



                                     -5-

<PAGE>   18
         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.

                 5.       Reacquired Shares.  Any shares of Series A Junior
Participating Preferred Stock purchased or otherwise acquired by the
Corporation in any manner whatsoever shall be retired and cancelled 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 any conditions and
restrictions on issuance set forth herein.

                 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 Junior Participating Preferred Stock unless, prior
thereto, the holders of shares of Series A Junior Participating Preferred Stock
shall have received $100 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").  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 Junior
Participating 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) 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 Junior Participating Preferred
Stock and Common Stock, respectively, holders of Series A Junior Participating
Preferred Stock and holders of shares of Common Stock shall, subject to the
prior rights of all other series of Preferred Stock, if any, ranking prior
thereto, receive their ratable and proportionate share of the remaining assets
to be distributed in the ratio of the Adjustment Number to 1 with respect to
such Series A Junior Participating 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, that rank on a parity with the Series A Junior Participating
Preferred Stock, then such remaining assets shall be distributed ratably to the
holders of such parity shares in proportion to their respective liquidation
preferences.  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.



                                     -6-


<PAGE>   19
                 C.       Neither the merger or consolidation of the 
Corporation into or with another corporation nor the consolidation, merger or
consolidation of any other corporation into or with the Corporation shall be
deemed to be a liquidation, dissolution or winding up of the Corporation within
the meaning of this Section 6, but the sale, lease or conveyance of all or
substantially all the Corporation's assets shall be deemed to be a liquidation,
dissolution or winding up of the Corporation within the meaning of this Section
6.

                 7.       Consolidation, Merger, etc.  In case the Corporation
shall enter into any consolidation, merger, combination, share exchange or
other transaction in which the shares of Common Stock are exchanged for or
changed into other stock or securities, cash and/or any other property, then in
any such case each share of Series A Junior Participating Preferred Stock shall
at the same time be similarly exchanged or changed in an amount per share equal
to the Adjustment Number 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.

                 8.       Redemption.  (A)  The Corporation, at its option, may

redeem shares of the Series A Junior Participating Preferred Stock in whole at
any time and in part from time to time, at a redemption price equal to the
Adjustment Number times the current per share market price (as such term is
hereinafter defined) of the Common Stock on the date of the mailing of the
notice of redemption, together with unpaid accumulated dividends to the date of
such redemption.  The "current per share market price" on any date shall be
deemed to be the average of the closing price per share of such Common Stock
for the ten consecutive Trading Days (as such term is hereinafter defined)
immediately prior to such date; provided, however, that in the event that the
current per share market price of the Common Stock is determined during a
period following the announcement of (A) a dividend or distribution on the
Common Stock other than a regular quarterly cash dividend 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 such ten Trading Day period, then, and in each such case,
the current per share market price shall be properly adjusted to take into
account ex-dividend trading.  The closing price for each day shall be the last
sales price, regular way, or, in case no such sale takes place on such day, the
average of the closing bid and asked prices, regular way, in either case as
reported in the principal transaction reporting system with respect to
securities listed or admitted to trading on the New York Stock Exchange, or, if
the Common Stock is not listed or admitted to trading on the New York Stock
Exchange, on the principal national securities exchange on which the Common
Stock is listed or admitted to trading, or, if the Common Stock is not listed
or admitted to trading on any national securities exchange but sales price
information is reported for such security, as reported by the National
Association of Securities Dealers, Inc. Automated Quotations System ("NASDAQ")
or such other self-regulatory organization or registered securities information
processor (as such terms are used under the Securities Exchange Act of 1934, as
amended) that then reports information concerning the Common Stock, or, if
sales price information is not so reported, the average of the high bid and low
asked prices in the over-the-counter market on such day, as reported by NASDAQ
or such other entity, or, if on any
        

                                     -7-


<PAGE>   20
such date the Common Stock is not quoted by any such entity, 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 of Directors of the
Corporation.  If on any such date no such market maker is making a market in
the Common Stock, the fair value of the Common Stock on such date as determined
in good faith by the Board of Directors of the Corporation shall be used.  The
term "Trading Day" shall mean a day on which the principal national securities
exchange on which the Common Stock is listed or admitted to trading is open for
the transaction of business, or, if the Common Stock is not listed or admitted
to trading on any national securities exchange but is quoted by NASDAQ, a day
on which NASDAQ reports trades, or, if the Common Stock is not so quoted, a
Monday, Tuesday, Wednesday, Thursday or Friday on which banking institutions in
the State of New York are not authorized or obligated by law or executive order
to close.

                 (B)      In the event that fewer than all the outstanding
shares of the Series A Junior Participating Preferred Stock are to be redeemed,
the number of shares to be redeemed shall be determined by the Board of
Directors and the shares to be redeemed shall be determined by lot or pro rata
as may be determined by the Board of Directors or by any other method that may
be determined by the Board of Directors in its sole discretion to be equitable.

                 (C)      Notice of any such redemption shall be given by
mailing to the holders of the shares of Series A Junior Participating Preferred
Stock to be redeemed a notice of such redemption, first class postage prepaid,
not later than the fifteenth day and not earlier than the sixtieth day before
the date fixed for redemption, at their last address as the same shall appear
upon the books of the Corporation.  Each such notice shall state:  (i) the
redemption date; (ii) the number of shares to be redeemed and, if fewer than
all the shares held by such holder are to be redeemed, the number of such
shares to be redeemed from such holder; (iii) the redemption price; (iv) the
place or places where certificates for such shares are to be surrendered for
payment of the redemption price; and (v) that dividends on the shares to be
redeemed will cease to accrue on the close of business on such redemption date.
Any notice that is mailed in the manner herein provided shall be conclusively
presumed to have been duly given, whether or not the shareholder received such
notice, and failure duly to give such notice by mail, or any defect in such
notice, to any holder of Series A Junior Participating Preferred Stock shall
not affect the validity of the proceedings for the redemption of any other
shares of Series A Junior Participating Preferred Stock that are to be
redeemed.  On or after the date fixed for redemption as stated in such notice,
each holder of the shares called for redemption shall surrender the certificate
evidencing such shares to the Corporation at the place designated in such
notice and shall thereupon be entitled to receive payment of the redemption
price.  If fewer than all the shares represented by any such surrendered
certificate are redeemed, a new certificate shall be issued representing the
unredeemed shares.

                 (D)      The shares of Series A Junior Participating Preferred
Stock shall not be subject to the operation of any purchase, retirement or
sinking fund.

                 9.       Ranking.  The Series A Junior Participating Preferred
Stock shall rank junior to all other series of the Corporation's Preferred
Stock as to the payment of dividends and the



                                     -8-

<PAGE>   21
distribution of assets, unless the terms of any such series shall provide
otherwise, and shall rank senior to the Common Stock as to such matters.

                 10.      Amendment.  At any time that any shares of Series A
Junior Participating Preferred Stock are outstanding, the Amended and Restated
Articles of Incorporation of the Corporation shall not be amended in any manner
which would materially alter or change the powers, preferences or special
rights of the Series A Junior Participating 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 Junior Participating Preferred
Stock, voting separately as a class.

                 11.      Fractional Shares.  Series A Junior Participating
Preferred Stock may be issued in fractions of a share that 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 Junior Participating Preferred
Stock.

                 IN WITNESS WHEREOF, MESA Inc. has caused this Statement to be
executed on its behalf by the undersigned officer this 6th day of July, 1995.


                                           MESA INC.



                                           By:  /s/ STEPHEN K. GARDNER
                                               --------------------------------
                                                    Stephen K. Gardner
                                                    Vice President and
                                                    Chief Financial Officer





                                     -9-



<PAGE>   1
 
                                                                      EXHIBIT 4b
 
                      STATEMENT OF RESOLUTION ESTABLISHING
                                SERIES OF SHARES
 
                                   designated
 
               SERIES A 8% CUMULATIVE CONVERTIBLE PREFERRED STOCK
                                      and
               SERIES B 8% CUMULATIVE CONVERTIBLE PREFERRED STOCK
 
                                       of
 
                                   MESA INC.
 
To the Secretary of State
of the State of Texas:
 
     Pursuant to the provisions of Article 2.13D of the Texas Business
Corporation Act (the "TBCA"), and pursuant to Article IV of its Amended and
Restated Articles of Incorporation, the undersigned, MESA Inc., a corporation
organized and existing under the TBCA (the "corporation"), hereby submits the
following statement for the purpose of establishing and designating series of
its Preferred Stock, par value $.01, designated "Series A Cumulative Convertible
Preferred Stock" and "Series B Cumulative Convertible Preferred Stock" and
fixing and determining the relative rights and preferences thereof:
 
     I. The name of the corporation is MESA Inc.
 
     II. The following resolution establishing and designating series of shares
and fixing and determining the relative rights and preferences thereof, was duly
adopted by all necessary action on the part of the corporation, consisting of
due adoption by the Board of Directors of the corporation at a meeting held on
            , 1996.
 
          RESOLVED, that pursuant to the authority vested in the Board of
     Directors of the corporation ("Board of Directors") in accordance with
     provisions of its Amended and Restated Articles of Incorporation (the
     "Articles of Incorporation"), two series of Preferred Stock, par value $.01
     per share, of the corporation are hereby created, and that the designation
     and number of shares thereof and the preferences, limitations and relative
     rights thereof are as follows:
 
     SECTION 1. DESIGNATION, NUMBER OF SHARES AND STATED VALUE OF SERIES A
PREFERRED STOCK. There is hereby authorized and established a series of
Preferred Stock that shall be designated as "Series A 8% Cumulative Convertible
Preferred Stock" (hereinafter referred to as "Series A Preferred"), and the
number of shares constituting such series shall be 140,000,000, plus, at any
time, such number of shares of Series B Preferred as have been or are at such
time being converted to shares of Series A Preferred pursuant to Section 16
hereof. Such number of shares may be increased, but not decreased, by resolution
adopted by the majority of the full Board of Directors. The "Stated Value" per
share of the Series A Preferred shall be equal to $2.26.
 
     SECTION 2. DESIGNATION, NUMBER OF SHARES AND STATED VALUE OF SERIES B
PREFERRED STOCK. There is hereby authorized and established a series of
Preferred Stock that shall be designated as "Series B 8% Cumulative Convertible
Preferred Stock" (hereinafter referred to as "Series B Preferred"), and the
number of shares constituting such series shall be 140,000,000. Such number of
shares may be increased, but not decreased, by resolution adopted by the
majority of the full Board of Directors. The "Stated Value" per share of the
Series B Preferred shall be equal to $2.26.
 
                                        1
<PAGE>   2
 
     SECTION 3. DEFINITIONS. In addition to the definitions set forth elsewhere
herein, the following terms shall have the meanings indicated:
 
     "Affiliate" means (i) with respect to any Person, any other Person that
directly or indirectly controls or manages, is controlled or managed by, or is
under common control or management with such Person, whether through the
ownership of equity interests, by contract or otherwise, and (ii) with respect
to any individual, in addition to any Persons specified in clause (i), the
spouse, any parent or any child of such individual and any trust for the benefit
of such individual, spouse, parent or child.
 
     "Average Gas Equivalent Price" shall mean for any Rolling 4 Quarter Period,
the average price received by the corporation during such period from sales of
oil and gas production, expressed on a natural gas equivalent basis per thousand
cubic feet ("Mcf") using a factor of 6 Mcf of natural gas per 1 barrel of
liquids, to be calculated as follows:
 
          (i) the aggregate revenues of the corporation and its consolidated
     subsidiaries during such Rolling 4 Quarter Period from sales of natural
     gas, natural gas liquids and oil and condensate produced (other than that
     used for fuel and shrinkage) and sold by the corporation and its
     consolidated subsidiaries, as reported in the corporation's consolidated
     financial statements, divided by,
 
          (ii) the sum of (A) the total volume, on an Mcf basis, of natural gas
     produced (other than that used for fuel and shrinkage) and sold by the
     corporation and its consolidated subsidiaries during such Rolling 4 Quarter
     Period, plus (B) the product of 6 times the total number of barrels of
     natural gas liquids, oil and condensate, produced (other than that used for
     fuel and shrinkage) and sold by the corporation and its consolidated
     subsidiaries during such Rolling 4 Quarter Period, as derived from the
     corporation's consolidated financial statements.
 
     "Business Day" shall mean any day other than a Saturday, Sunday or a day on
which banking institutions in Dallas, Texas are authorized or obligated by law
or executive order to close.
 
     "Closing Price" with respect to a particular security on any Trading Day
shall mean the last reported sales price, regular way, for such security on such
Trading Day, or, in case no sale takes place on such day, the average of the
closing bid and ask prices, regular way on such Trading Day, 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 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 such
security is listed or admitted to trading or, if such security is 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 Nasdaq Stock Market or such other
system then in use, or, if on any such date such security is not quoted by any
such organization, the average of the closing bid and ask prices on such Trading
Day as furnished by a professional market maker making a market in such security
selected by the Board of Directors of the corporation. If on any such date no
market maker is making a market in such security, the fair value of such shares
on such date as determined in good faith by the Board of Directors shall be
used.
 
     "Common Stock" shall mean the common stock, par value $0.01 per share, of
the corporation.
 
     "Consolidated EBITDA" for any period, shall mean the consolidated net
income or loss of the corporation for such period determined in accordance with
GAAP, but excluding gains and losses not arising from operations (including,
without limitation, interest income, gains and losses from investments, gains
and losses from dispositions of oil and gas properties or other assets,
collections and settlements of claims and litigation, adjustments of contingency
reserves and other extraordinary and/or non-recurring gains and losses), plus,
to the extent the following have been deducted in determining such net income or
loss, interest expense, income taxes, depreciation, depletion and amortization
expense and impairment expense.
 
     "Conversion Price" shall mean the conversion price per share of Common
Stock into which the Series A Preferred and Series B Preferred is convertible,
as such conversion price may be adjusted pursuant to Section 10 hereof. The
initial Conversion Price will be $2.26.
 
                                        2
<PAGE>   3
 
     "full Board of Directors" when used in reference to the corporation's Board
of Directors, means the total number of members of the Board of Directors as
fixed by, or in the manner provided in, the Articles of Incorporation and Bylaws
(without regard to any then existing vacancies), including, any members elected
by the holders of the Series B Preferred pursuant hereto.
 
     "Fixed Charge Coverage Ratio" shall mean as of the end of any Rolling 4
Quarter Period, the ratio of (i) the sum of (A) the Consolidated EBITDA for such
Rolling 4 Quarter Period, plus (B) one-third of gross operating rents paid
before sublease income as defined by Standard & Poor's Corporation ("Gross
Rents") , if any, for such period to (ii) the sum for such Rolling 4 Quarter
Period of (A) interest expense, both expensed and capitalized, of the
corporation and its consolidated subsidiaries for such period, plus (B)
one-third of Gross Rents for such period, plus (C) scheduled principal
amortization of indebtedness (including borrowed money and capitalized leases)
of the corporation and its consolidated subsidiaries.
 
     "GAAP" shall mean generally accepted accounting principles in the United
States of America from time to time.
 
     "Initial Partnership Affiliates" shall mean the Partnership, the Persons
that are partners of the Partnership as of the Original Issue Date of the Series
B Preferred and any of their respective Affiliates so long as they remain
Affiliates of the Partnership or such Persons.
 
     "Junior Securities" means the Common Stock or any other series of stock
issued by the corporation ranking junior as to the Series A Preferred and Series
B Preferred in payment of dividends or distributions or upon liquidation,
dissolution, or winding-up of the corporation.
 
     "Market Price" per share of Common Stock as of any date shall mean the
average of the daily Closing Prices for a period of twenty Trading Days ending
on such date.
 
     "Minimum Ownership Amount" shall mean at any time, ownership of (i) at
least 34,132,744 shares of Series B Preferred or (ii) such number of shares of
Common Stock and Underlying Common Stock which is at least equal to 15 percent
of the total number of shares of Common Stock and Underlying Common Stock
outstanding at such time. For purposes of this definition, ownership of shares
of Series B Preferred shall be considered to be ownership of the corresponding
shares of Underlying Common Stock.
 
     "Minimum Ownership Condition" shall be satisfied at any time if (i) the
Minimum Ownership Amount is owned in the aggregate at such time by one or more
of the Initial Partnership Affiliates, (ii) at least one half of the Minimum
Ownership Amount is owned and held in the aggregate at such time by one or more
of the Rainwater Affiliates, and (iii) the power to vote at least a majority of
the shares of Series B Preferred outstanding at such time is held by Rainwater
Affiliates, which shall be satisfied (A) with respect to any shares of Series B
Preferred owned by the Partnership if a Rainwater Affiliate is at such time the
sole general partner of the Partnership, (B) with respect to any shares owned by
a Rainwater Affiliate if at such time the right to vote such shares is not
shared with any Person who is not a Rainwater Affiliate, and (C) with respect to
any shares owned by a Person other than a Rainwater Affiliate, if at such time a
Rainwater Affiliate shall have the sole right to vote such shares pursuant to a
voting agreement, voting trust, irrevocable proxy or other similar agreement
with terms reasonably satisfactory to the corporation; provided that, the
corporation shall have been presented with appropriate certifications or other
documentation demonstrating that the foregoing requirements have been met.
 
     "Non-Series A and B Directors" shall mean the members of the Board of
Directors in whose election the holders of Common Stock are entitled to vote
(whether or not holders of shares of any other class or series are also entitled
to vote thereon).
 
     "Original Issue Date" shall mean with respect to the Series A Preferred or
Series B Preferred, as the case may be, the date on which shares of such series
are first issued.
 
     "Parity Security" means any class or series of stock issued by the
corporation ranking on a parity with the Series A Preferred and Series B
Preferred in payment of dividends or distributions or upon liquidation,
dissolution or winding-up of the corporation.
 
                                        3
<PAGE>   4
 
     "Partnership" shall mean DNR-Mesa Holdings, L.P., a Texas limited
partnership.
 
     "Partnership Affiliates" shall mean the Partnership, its partners and their
respective Affiliates for so long as they remain Affiliates of the Partnership
or such partners.
 
     "Payable-in-Kind" or "Paid-in-Kind" when used in reference to any dividend
payable on the shares of Series A Preferred or Series B Preferred, means payment
of the dividend by issuance of that number of additional shares of Series A
Preferred or Series B Preferred, as the case may be, that has an aggregate
Stated Value equal to the dollar amount of such dividend then payable, rounded
to the nearest whole share (i.e. if less than .5 rounded down, and if .5 or more
rounded up). Shares of Series A Preferred or Series B Preferred issued as
dividends Payable-in-Kind shall be duly authorized, validly issued and
nonassessable and, upon issuance, shall have rights (including without
limitation, dividend, voting, conversion and redemption rights) identical to the
outstanding shares of Series A Preferred and Series B Preferred in respect of
which they are issued.
 
     "Person" means any individual, corporation, association, partnership, joint
venture, limited liability company, trust, estate, or other entity or
organization.
 
     "Rainwater Affiliates" shall mean, at any time, Richard E. Rainwater and
any of his Affiliates at such time. As of the date hereof, the Rainwater
Affiliates include, without limitation, Natural Gas Partners II, L.P. and
Natural Gas Partners III, L.P.
 
     "Rolling 4 Quarter Period" means the most recently ended period of four
consecutive fiscal quarters of the corporation prior to the date of
determination.
 
     "Senior Securities" means any class or series of stock issued by the
corporation ranking senior to the Series A Preferred and Series B Preferred in
payment of dividends or distributions or upon liquidation, dissolution, or
winding-up of the corporation.
 
     "Trading Day" with respect to any security means (i) if such security is
listed or admitted for trading on any national securities exchange, a day on
which such national securities exchange is open for trading, or (ii) if such
security is not listed or admitted to trading on any national securities
exchange, a Business Day.
 
     "Transfer Agent" means American Stock Transfer & Trust Corporation, or such
other agent or agents of the corporation as may be designated by the Board of
Directors as the transfer agent or conversion agent for the Series A Preferred
and Series B Preferred.
 
     "Underlying Common Stock" means at any time, with respect to any share of
Series A Preferred or Series B Preferred, the aggregate number of shares of
Common Stock into which such share is then convertible at such time pursuant to
Section 10 hereof.
 
     SECTION 4. DIVIDENDS AND DISTRIBUTIONS.
 
          (a) The holders of outstanding shares of Series A Preferred and Series
     B Preferred shall be entitled to receive, as and when declared by the
     corporation, out of funds of the corporation legally available for the
     payment of dividends, preferential quarterly dividends at the times and at
     the rates provided for in this Section 4. Dividends on shares of the Series
     A Preferred and Series B Preferred shall be cumulative and shall accrue
     from and including the date of issuance of such shares to and including the
     date on which such shares shall have been converted into Common Stock or
     redeemed pursuant to Section 7 hereof. Such dividends shall accrue whether
     or not there shall be (at the time such dividend becomes payable or at any
     other time) profits, surplus or other funds of the corporation legally
     available for the payment of dividends.
 
          (b) Dividends shall accrue on each outstanding share of Series A
     Preferred and Series B Preferred at the rate of eight percent (8%) per
     annum of the Stated Value (the "Dividend Rate") of such share. Dividends
     shall be payable quarterly, in arrears, as of the last Business Day of each
     December, March, June and September, commencing on September 30, 1996
     (each, a "Dividend Payment Date").
 
                                        4
<PAGE>   5
 
          (c) During the period beginning on the Original Issue Date of the
     Series B Preferred and ending on the first Dividend Payment Date on or
     following the fourth anniversary thereof (the "Exclusive PIK Period"),
     dividends on outstanding shares of Series A Preferred and Series B
     Preferred shall be Payable-in-Kind. After the Exclusive PIK Period,
     dividends on the shares of Series A Preferred and Series B Preferred shall
     be Payable-in-Kind or, at the corporation's option, if the "Stock Price
     Threshold" (as defined in subsection (d) below) or the "Coverage Ratio or
     Gas Price Threshold" (as defined in subsection (e) below) is satisfied as
     of the record date for such dividend, payable in cash.
 
          (d) For purposes hereof, the "Stock Price Threshold" shall be
     satisfied as of a record date for a Dividend Payment Date after the
     Exclusive PIK Period if the average of the daily Closing Prices for the
     Common Stock during a period of ninety (90) consecutive Trading Days
     preceding the tenth day prior to such record date, was more than three
     times the Conversion Price then in effect. Once the Stock Price Threshold
     has been satisfied, it shall be deemed to remain satisfied on each
     subsequent quarterly Dividend Payment Date regardless of any subsequent
     changes in the price of the Common Stock.
 
          (e) For purposes hereof, the "Coverage Ratio or Gas Price Threshold"
     shall be satisfied as of a record date for a Dividend Payment Date if
     either (i) the Fixed Charge Coverage Ratio as of the end of the then most
     recently ended Rolling 4 Quarter Period is in excess of 2.5; or (ii) the
     Average Gas Equivalent Price realized by the corporation during the then
     most recently ended Rolling 4 Quarter Period is in excess of $2.95. As a
     condition to the payment of cash dividends on any Dividend Payment Date,
     the Coverage Ratio or Gas Price Threshold must be satisfied as of the
     record date for such quarterly Dividend Payment Date (unless the Stock
     Price Threshold has been satisfied, in which case satisfaction of the
     Coverage Ratio or Gas Price Threshold shall not be required).
 
          (f) The amount of dividends payable on each Dividend Payment Date
     shall be determined by applying the Dividend Rate from but excluding the
     immediately preceding Dividend Payment Date (or from but excluding the date
     of issuance of shares of Series A Preferred or Series B Preferred, with
     respect to the first dividend period) to and including the Dividend Payment
     Date.
 
          (g) Notwithstanding the foregoing or anything else herein to the
     contrary, however, (i) dividends payable on any Redemption Date (as defined
     in Section 7 below), shall be payable in cash or in Common Stock in
     accordance with Section 7 hereof, and (ii) dividends payable on any final
     distribution date relating to a dissolution, liquidation or winding up of
     the corporation, shall be payable in cash only. If the payment date does
     not occur on a regular Dividend Payment Date, dividends shall be calculated
     on the basis of the actual number of days elapsed from but excluding the
     immediately preceding Dividend Payment Date to and including the Redemption
     Date or such final distribution date. Dividends payable on the shares of
     Series A Preferred and Series B Preferred for any period of less than a
     full quarterly dividend period shall be computed on the basis of a 360-day
     year comprised of twelve 30-day months.
 
          (h) To the extent dividends are not paid in cash or Paid-in-Kind on a
     Dividend Payment Date, all dividends which shall have accrued on each share
     of Series A Preferred and Series B Preferred outstanding as of such
     Dividend Payment Date shall be added to the Stated Value of such share of
     Series A Preferred and Series B Preferred and shall remain a part thereof
     until paid, and dividends shall accrue at the Dividend Rate and be paid on
     such share of Series A Preferred and Series B Preferred on the basis of the
     Stated Value, as so adjusted.
 
          (i) Dividends payable on each Dividend Payment Date shall be paid to
     record holders of the shares of Series A Preferred and Series B Preferred
     as they appear on the books of the corporation at the close of business on
     the tenth Business Day immediately preceding the respective Dividend
     Payment Date or on such other record date as may be fixed by the Board of
     Directors of the corporation in advance of a Dividend Payment Date,
     provided that no such record date shall be less than ten nor more than
     sixty calendar days preceding such Dividend Payment Date.
 
          (j) So long as any shares of Series A Preferred or Series B Preferred
     are outstanding;
 
             (i) No dividend or other distribution shall be declared or paid, or
        set apart for payment on or in respect of, any Junior Securities (other
        than dividends or distributions payable in shares of Junior
 
                                        5
<PAGE>   6
 
        Securities or in rights to purchase Junior Securities), nor shall any
        Junior Securities be redeemed, purchased or otherwise acquired for any
        consideration (or any money be paid to a sinking fund or otherwise set
        apart for the purchase or redemption of any such Junior Securities).
 
             (ii) No dividend or other distribution, except as described in the
        next succeeding sentence, shall be declared or paid, or set apart for
        payment on or in respect of, Series A Preferred or Series B Preferred or
        any Parity Securities for any period unless full cumulative dividends on
        all outstanding shares of Series A Preferred and Series B Preferred and
        any Parity Securities have been or contemporaneously are declared and
        paid for all dividend periods terminating on or prior to the date set
        for payment of such dividend. When dividends are not paid in full, as
        aforesaid, on the shares of Series A Preferred and Series B Preferred
        and any Parity Securities, all dividends declared upon such Parity
        Securities shall be declared and paid pro rata so that the amounts of
        dividends per share declared and paid on the shares of Series A
        Preferred and Series B Preferred and such Parity Securities shall in all
        cases bear to each other the same ratio that unpaid dividends per share
        on the Series A Preferred and Series B Preferred and on such Parity
        Securities bear to each other.
 
             (iii) No shares of Series A Preferred or Series B Preferred or any
        Parity Securities shall be redeemed, purchased or otherwise acquired for
        any consideration (or any money be paid to a sinking fund or otherwise
        set apart for the purchase or redemption of any such Parity Security) by
        the corporation unless the full cumulative dividends on all outstanding
        shares of Series A Preferred and Series B Preferred shall have been or
        contemporaneously are declared and paid for all dividend periods
        terminating on or prior to the date on which such redemption, purchase
        or other payment is to occur.
 
     SECTION 5. CERTAIN COVENANTS AND RESTRICTIONS. So long as any shares of
Series A Preferred or Series B Preferred are outstanding;
 
          (a) The corporation shall at all times reserve and keep available for
     issuance upon the conversion of the shares of Series A Preferred and Series
     B Preferred as provided in Section 7 and Section 10, respectively, such
     number of its authorized but unissued shares of Common Stock as will be
     sufficient to permit the conversion of all outstanding shares of Series A
     Preferred and Series B Preferred and all other securities and instruments
     convertible into shares of Common Stock, and shall take all reasonable
     action within its power required to increase the authorized number of
     shares of Common Stock necessary to permit the conversion of all
     outstanding shares of Series A Preferred and Series B Preferred and all
     such other securities and instruments convertible into shares of Common
     Stock.
 
          (b) The corporation covenants and agrees that all shares of Common
     Stock that may be issued as payment of the Redemption Price or upon
     exercise of the conversion rights of shares of Series A Preferred and
     Series B Preferred will, upon issuance, be fully-paid and nonassessable.
 
          (c) The corporation will endeavor to make the shares of stock that may
     be issued as payment of the Redemption Price or upon exercise of the
     conversion rights of shares of Series A Preferred and Series B Preferred
     eligible for trading upon any national securities exchange, or any
     automated quotation system of a registered securities association, upon or
     through which the Common Stock shall then be traded prior to such delivery.
 
          (d) Prior to the delivery of any securities which the corporation
     shall be obligated to deliver upon redemption or conversion of the Series A
     Preferred or Series B Preferred, the corporation will endeavor to comply
     with all federal and state securities laws and regulations thereunder
     requiring the registration of such securities with, or any approval of or
     consent to the delivery of such securities by, any governmental authority.
 
          (e) The corporation shall pay all taxes and other governmental charges
     (other than any income or franchise taxes) that may be imposed with respect
     to the issue or delivery of shares of Common Stock upon conversion or
     redemption of Series A Preferred or Series B Preferred as provided herein.
     The corporation shall not be required, however, to pay any tax or other
     charge imposed in connection with any transfer involved in the issue of any
     certificate for shares of Common Stock in any name other than that
 
                                        6
<PAGE>   7
 
     of the registered holder of the shares of the Series A Preferred or Series
     B Preferred surrendered in connection with the conversion or redemption
     thereof, or involved in the issue of any certificate for shares of Series A
     Preferred in exchange for shares of Series B Preferred, and in such case
     the corporation shall not be required to issue or deliver any stock
     certificate until such tax or other charge has been paid, or it has been
     established to the corporation's satisfaction that no tax or other charge
     is due.
 
     SECTION 6. LIQUIDATION PREFERENCE.
 
          (a) In the event of any liquidation, dissolution, or winding-up of the
     corporation (in connection with the bankruptcy or insolvency of the
     corporation or otherwise), whether voluntary or involuntary, before any
     payment or distribution of the assets of the corporation (whether capital
     or surplus) shall be made to or set apart for the holders of shares of any
     Junior Securities, the holders of the shares of Series A Preferred and
     Series B Preferred shall be entitled to receive an amount per share equal
     to the Stated Value per share held by them, plus an amount in cash equal to
     the full cumulative dividends accrued and unpaid thereon, to the date of
     such payment, whether or not declared. No payment on account of any such
     liquidation, dissolution or winding-up of the corporation shall be paid to
     the holders of the shares of Series A Preferred or Series B Preferred or
     the holders of any Parity Securities unless there shall be paid at the same
     time to the holders of the shares of Series A Preferred and Series B
     Preferred and the holders of any Parity Securities proportionate amounts
     determined ratably in proportion to the full amounts to which the holders
     of all outstanding shares of Series A Preferred and Series B Preferred and
     the holders of all such outstanding Parity Securities are respectively
     entitled with respect to such distribution. For purposes of this Section 6,
     neither a consolidation or merger of the corporation with one or more
     partnerships, corporations or other entities nor a sale, lease, exchange or
     transfer of all or any substantial part of the corporation's assets for
     cash, securities or other property shall be deemed to be a liquidation,
     dissolution or winding-up of the corporation, whether voluntary or
     involuntary.
 
          (b) After payment of the full amount of the liquidation preference to
     which the holders of shares of Series A Preferred and Series B Preferred
     are entitled, such holders will not be entitled to any further
     participation in any distribution of assets of the corporation.
 
          (c) Written notice of any liquidation, dissolution or winding-up of
     the corporation, stating the payment date or dates when and the place or
     places where the amounts distributable in such circumstances shall be
     payable, shall be given by first class mail, postage prepaid, not less than
     15 days prior to any payment date stated therein, to the holders of record
     of the shares of Series A Preferred and Series B Preferred at their
     respective addresses as the same shall appear in the records of the
     corporation.
 
     SECTION 7. REDEMPTION. The outstanding shares of Series A Preferred and
Series B Preferred are subject to redemption in accordance with the following
provisions:
 
          (a) Subject to the terms hereof, the corporation may at its option
     elect to redeem outstanding shares of Series A Preferred and Series B
     Preferred, in whole or in part (pro-rata or by lot among the outstanding
     shares of both series), on any Dividend Payment Date after the thirtieth
     (30th) day following the tenth (10th) anniversary of the Original Issue
     Date of the Series B Preferred Stock.
 
          (b) On June 30, 2008, the corporation shall redeem all of the shares
     of Series A Preferred and Series B Preferred outstanding on such date.
 
          (c) The redemption price per share for Series A Preferred and Series B
     Preferred redeemed on any optional or mandatory redemption date (the
     "Redemption Price") shall be equal to the Stated Value per share of the
     shares to be redeemed plus an amount equal to the aggregate dollar amount
     of all accrued and unpaid dividends through the redemption date that have
     not been added to the Stated Value of such shares. The Redemption Price
     shall be paid in cash from any source of funds legally available therefor,
     unless the corporation shall publicly announce at least 30 days prior to
     the redemption date that it has elected to make payment of the Redemption
     Price in Common Stock, in which case the Redemption Price shall be payable
     in Common Stock. If the corporation elects to pay the Redemption Price in
     shares of Common Stock, the number (or fraction) of shares to be issued in
     payment of the Redemption Price
 
                                        7
<PAGE>   8
 
     shall be calculated based on the Market Price per share of Common Stock as
     of the fifth Trading Day before the redemption date.
 
          (d) Not less than thirty nor more than sixty days prior the redemption
     date, a notice specifying the time and place of such redemption shall be
     given by first class mail, postage prepaid, to the holders of record of the
     shares of Series A Preferred and Series B Preferred to be redeemed at their
     respective addresses as the same shall appear on the books of the
     corporation (but no failure to mail such notice or any defect therein shall
     affect the validity of the proceedings for redemption except as to the
     holder to whom the corporation has failed to mail such notice or except as
     to the holder whose notice was defective), calling upon each such holder of
     record to surrender to the corporation on the redemption date at the place
     designated in such notice such holder's certificate or certificates
     representing the then outstanding shares of Series A Preferred or Series B
     Preferred held by such holder. On or after the Redemption Date, each holder
     of shares of Series A Preferred and Series B Preferred called for
     redemption shall surrender his certificate or certificates for such shares
     to the corporation at the place designated in the redemption notice and
     shall thereupon be entitled to receive payment of the Redemption Price in
     the manner set forth in Section 7(a) above. If the redemption is delayed
     for any reason, dividends shall continue to accrue on the shares of Series
     A Preferred and Series B Preferred outstanding, and shall be added to and
     become a part of the Redemption Price of such shares, until the Redemption
     Price, as so adjusted, for such shares is paid in full.
 
          (e) If a holder of shares of Series A Preferred or Series B Preferred
     called for redemption shall have elected, in accordance with the provisions
     of Section 10(b), to convert such shares into Common Stock, such shares of
     Series A Preferred or Series B Preferred which are to be converted into
     Common Stock shall no longer be subject to redemption, and conversion of
     same shall occur in accordance with the terms of Section 10.
 
     SECTION 8. SHARES TO BE RETIRED. All shares of Series A Preferred and
Series B Preferred repurchased, redeemed, converted or otherwise acquired by the
corporation shall be retired and cancelled and shall be restored to the status
of authorized but unissued shares of Preferred Stock, without designation as to
series, and may thereafter be reissued.
 
     SECTION 9. VOTING RIGHTS.
 
          (a) Except as otherwise provided in this Section 9 or required by law
     or any provision of the Articles of Incorporation of the corporation, the
     holders of the shares of Series A Preferred and Series B Preferred shall
     vote together with the shares of Common Stock as a single class at any
     annual or special meeting of shareholders of the corporation upon the
     following basis: each holder of shares of Series A Preferred and Series B
     Preferred shall be entitled to such number of votes for the shares of
     Series A Preferred and Series B Preferred held by such holder on the record
     date fixed for such meeting as shall be equal to the whole number of shares
     of Underlying Common Stock for such shares of Series A Preferred and Series
     B Preferred immediately after the close of business on the record date
     fixed for such meeting.
 
          (b) With respect to any matter for which the affirmative vote of the
     holders of separate classes or series of the corporation's capital stock is
     required by the TBCA, the holders of Series A Preferred and Series B
     Preferred shall, except as provided in this Section 9 or required by law,
     vote together as a single class with respect to such matter and the holders
     of the shares of Series A Preferred and Series B Preferred shall not be
     entitled to vote as a separate class or series apart from each other,
     including, without limitation, any vote on a proposal to approve or adopt
     (i) any plan of merger, consolidation or share exchange for which the TBCA
     requires a shareholder vote; (ii) any disposition of assets for which the
     TBCA requires a shareholder vote; and (iii) any dissolution of the
     corporation for which the TBCA requires a shareholder vote.
 
          (c) For so long as any shares of Series A Preferred or Series B
     Preferred remain outstanding, the corporation shall not: (i) without the
     affirmative vote or consent of the holders of a majority of the shares of
     Series A Preferred and Series B Preferred voting together as a single
     class: (x) authorize, create or issue, or increase the authorized or issued
     amount of, any class or series of stock of Senior Securities or
 
                                        8
<PAGE>   9
 
     Parity Securities, or any security convertible into or exchangeable for
     Senior Securities or Parity Securities or reclassify or modify any Junior
     Securities so as to become Parity Securities or Senior Securities; provided
     that if the Series A Preferred and Series B Preferred are affected
     differently by such action, the holders of each series will vote as a
     separate class; or (y) amend the Articles of Incorporation to eliminate
     cumulative voting; or (ii) without the affirmative vote or consent of the
     holders of two-thirds of the shares of Series A Preferred voting as a
     separate class, adopt any amendment to the Articles of Incorporation or the
     bylaws that would materially affect the terms of the Series A Preferred; or
     (iii) without the affirmative vote or consent of the holders of at least a
     majority of the shares of Series B Preferred voting as a separate class,
     adopt any amendment to the Articles of Incorporation or the Bylaws that
     would materially affect the terms of the Series B Preferred.
 
          (d) For so long as any shares of Series B Preferred remain
     outstanding, the affirmative vote or consent of the holders of at least a
     majority of the shares of Series B Preferred outstanding at the time shall
     be necessary to permit, affect or validate the amendment, alteration or
     repeal by the shareholders of any provisions of the Articles of
     Incorporation (including the Statement of Resolution relating to the Series
     A Preferred and Series B Preferred) or Bylaws of the corporation that would
     limit the authority of the Board of Directors to amend or repeal any
     provision of the corporation's Bylaws.
 
          (e) For so long as any shares of Series B Preferred remain outstanding
     and the Minimum Ownership Condition is met, the holders of the Series B
     Preferred shall have, in addition to the other voting rights required by
     law or set forth herein or in the corporation's Articles of Incorporation,
     the exclusive right, voting separately as a single class, to elect the
     minimum number of directors (such directors are referred to herein as the
     "Series B Directors") necessary to constitute a majority of the full Board
     of Directors of the corporation (excluding in any such calculation any
     Series A Directors). As of the Original Issue Date for the Series B
     Preferred, the holders of the Series B Preferred shall have the right to
     elect four of the seven members of the corporation's Board of Directors.
     The right to elect the Series B Directors pursuant hereto may be exercised
     by written consent in accordance with subsection (j) of this Section 9 or
     by vote at any annual or special meeting of shareholders held for the
     purpose of electing directors. At elections for the Series B Directors,
     each holder of Series B Preferred shall be entitled to one vote for each
     share held.
 
          (f) The Series B Directors elected as provided herein shall serve
     until the next annual meeting or until their respective successors shall be
     elected and shall qualify. Any Series B Director may be removed with or
     without cause by, and shall not be removed other than by, the vote of the
     holders of a majority of the outstanding shares of Series B Preferred,
     voting separately as a class, at a meeting called for such purpose or by
     written consent in accordance with subsection (j) hereof. If the office of
     any Series B Director becomes vacant by reason of death, resignation,
     retirement, disqualification or removal from office or otherwise, the
     remaining Series B Directors, by majority vote, may elect a successor, or,
     alternatively, the holders of a majority of the outstanding shares of
     Series B Preferred, voting separately as a class, at a meeting called for
     such purpose or by written consent in accordance with subsection (k) hereof
     may elect a successor. Any such successor shall hold office for the
     unexpired term in respect of which such vacancy occurred. Upon any
     termination of the right of the holders of Series B Preferred to vote for
     and elect Series B Directors as herein provided (i) the Series B Directors
     then serving on the Board of Directors may continue to hold their office
     for the remainder of their term, subject to the right of the majority of
     the Non-Series A and B Directors to request their prior resignation, in
     which case the Series B Directors shall resign upon such request, and (ii)
     upon the expiration of the term of office or earlier resignation of each
     Series B Director pursuant to this sentence, the number of members
     constituting the corporation's Board of Directors shall automatically be
     reduced accordingly unless a majority of the directors other than the
     Series B Directors by resolution determine otherwise and elect additional
     directors to fill any resulting vacancies.
 
          (g) The following special voting provisions shall be applicable to the
     Series A Preferred Stock:
 
             (i) if the corporation shall be in arrears in the payment of
        dividends (whether Payable-in-Kind or in cash) on the shares of Series A
        Preferred and Series B Preferred for a total of six quarterly
 
                                        9
<PAGE>   10
 
        Divided Payment Dates, then the number of members of the Board of
        Directors shall automatically be increased by two additional directors
        and the holders of the Series A Preferred, voting as a separate class,
        shall have the exclusive right to elect two directors ("Series A
        Directors") immediately, and at the next and every subsequent annual
        meeting of shareholders called for the election of directors, at which
        the term of office of the Series A Directors expire;
 
             (ii) the right of the holders of Series A Preferred to elect the
        Series A Directors as aforesaid shall continue until such time as
        dividends accumulated on the Series A Preferred shall have been paid in
        full, whether Payable-in-Kind or in cash, at which time the office of
        the Series A Directors shall be eliminated and the special right of the
        holders of Series A Preferred so to vote separately as a class for the
        election of the Series A Directors shall terminate, subject to revesting
        at such time as the corporation shall be in arrears in the payment of
        dividends on the outstanding shares of Series A Preferred as set forth
        in clause (i) above;
 
             (iii) each Series A Director shall agree, prior to his election to
        office, to resign immediately upon any termination of the right of the
        holders of Series A Preferred to vote as a separate class for directors
        as herein provided, and upon any such termination, each Series A
        Director shall forthwith resign and the size of the Board of Directors
        shall automatically be reduced accordingly;
 
             (iv) unless otherwise required to resign as aforesaid, the term of
        office of each Series A Director shall terminate upon the election of a
        successor Series A Director at any meeting of the shareholders held for
        the purpose of electing directors; and
 
             (v) in any case in which the holders of Series A Preferred shall be
        entitled to vote pursuant to this Section 9(g), each holder of Series A
        Preferred shall be entitled to one vote for each share of Series A
        Preferred held.
 
          (h) During any period in which the holders of Series A Preferred shall
     be entitled to elect directors pursuant to subsection (g) of this Section
     9, or the holders of Series B Preferred shall be entitled to elect
     directors pursuant to subsection (e) of this Section 9 the following shall
     be applicable:
 
             (i) if the annual meeting of shareholders of the corporation is
        not, for any reason, held within the time fixed in the Bylaws of the
        corporation, or if a vacancy shall exist in the office of a Series A
        Director or a Series B Director, a proper officer of the corporation,
        upon the written request of the holders of record of at least ten
        percent (10%) of the shares of the Series A Preferred or Series B
        Preferred then outstanding, as applicable, addressed to the Secretary of
        the corporation, shall call a special meeting in lieu of the annual
        meeting of shareholders, or in the event of a vacancy, a special meeting
        of the holders of Series A Preferred or Series B Preferred, as
        applicable, for the purpose of electing Series A Directors or Series B
        Directors, as applicable, and any such meeting shall be held at the
        earliest practicable date at such time and place as shall be determined
        by the corporation;
 
             (ii) if such meeting shall not be called by the proper officer of
        the corporation within twenty (20) days after personal service of said
        written request upon the Secretary of the corporation, or within (20)
        days after mailing the same within the United States by certified mail,
        addressed to the Secretary of the corporation at its principal executive
        offices, then the holders of record of at least ten percent (10%) of the
        outstanding shares of the Series A Preferred or Series B Preferred, as
        applicable, may designate in writing one of their number to call such
        meeting at the expense of the corporation, and such meeting may be
        called by the person so designated upon the notice required for the
        annual meetings of shareholders of the corporation and shall be held at
        the principal executive offices of the corporation. Any holder of Series
        A Preferred or Series B Preferred, as applicable, so designated shall
        have access to the lists of Series A Preferred or Series B Preferred
        shareholders to be called pursuant to the provisions hereof; and
 
             (iii) at any meeting held for the purpose of electing a director at
        which the holders of Series A Preferred or Series B Preferred shall have
        the right, voting as a separate class, to elect the Series A Director or
        Series B Director pursuant to this Section 9, the presence in person or
        by proxy of the holders of at least one-third ( 1/3) of the outstanding
        Series A Preferred or Series B Preferred, as
 
                                       10
<PAGE>   11
 
        applicable, shall be required to constitute a quorum of such Series A
        Preferred or Series B Preferred, as applicable.
 
          (i) During any period in which the holders of Series B Preferred shall
     be entitled to elect directors pursuant to subsection (e) of this Section
     9, (i) the holders of Series B Preferred shall not have the right or
     otherwise be entitled to vote in the election of any directors other than
     the Series B Directors, (ii) no Series B Director shall have the right to
     vote in the election of any person to fill any vacancy created by the
     death, resignation, retirement, disqualification or removal from office or
     otherwise of any director other than a Series B Director and all such
     rights with respect to the Non-Series A and B Directors shall be exercised
     for and on behalf of the Board of Directors by a majority of the Non-Series
     A and B Directors, and (iii) only the Non-Series A and B Directors shall
     have right to vote in any action by or on behalf of the Board of Directors
     with respect to nominating persons to serve as Non-Series A and B Directors
     to be elected at any meeting of shareholders that is held after the first
     meeting of shareholders at which Non-Series A and B Directors are elected
     that is held after the Original Issue Date of the Series B Preferred. The
     persons to be nominated by or on behalf of the Board of Directors for
     election as Non-Series A and B Directors at such first meeting of
     shareholders to be held after such Original Issue Date shall be such
     persons as shall have most recently been designated as such nominees by
     action of the Board of Directors prior to such Original Issue Date (or, if
     any of such nominees shall be unable or unwilling to serve, such other
     person or persons as shall be designated by the other such nominee or
     nominees), unless otherwise agreed after such date by the unanimous vote of
     all Non-Series A and B Directors then in office. Nothing in clause (ii) or
     (iii) above of this subsection (i), or in the immediately preceding
     sentence, shall limit or restrict the right of holders of shares of Common
     Stock and Series A Preferred to nominate and to elect, subject to and in
     accordance with applicable law, the other provisions of the Articles of
     Incorporation and the bylaws, persons to serve as Non-Series A and B
     Directors. This subsection (i) and the defined terms used herein may not be
     amended without (x) the affirmative vote of the holders of a majority of
     the outstanding shares of Common Stock and (y) the affirmative vote of the
     holders of a majority of the outstanding shares of Series A Preferred
     Stock.
 
          (j) Pursuant to Article 9.10A of the TBCA, any action of the holders
     of the Series B Preferred, voting as a separate class, which is required by
     the TBCA to be taken at any annual or special meeting of the holders of the
     Series B Preferred, or is otherwise permitted to be taken by the holders of
     Series B Preferred at any annual or special meeting pursuant to the TBCA,
     the Articles of Incorporation (including the Statement of Resolution
     relating to the Series A Preferred and Series B Preferred) or the
     corporation's bylaws, may be taken without a meeting, without prior notice,
     and without a vote, if a consent or consents in writing, setting forth the
     action so taken, shall be signed by the holder or holders of shares of
     Series B Preferred having not less than the minimum number of votes that
     would be necessary to take such action at a meeting at which the holders of
     all shares of Series B Preferred were present and voted.
 
     SECTION 10. CONVERSION RIGHTS. Holders of shares of Series A Preferred and
Series B Preferred shall have the right to convert all or a portion of such
shares into shares of Common Stock, as follows:
 
          (a) Subject to and upon compliance with the provisions of this Section
     10, each share of Series A Preferred and Series B Preferred shall be
     convertible at the option of the holder thereof into fully paid,
     nonassessable shares of Common Stock. The number (or fraction) of shares of
     Common Stock deliverable upon conversion of one share of Series A Preferred
     or Series B Preferred shall be determined by dividing the Stated Value of
     such share of Series A Preferred or Series B Preferred by the Conversion
     Price then in effect. For purpose of such determination, the Stated Value
     of each share of Series A Preferred or Series B Preferred shall be
     increased by the amount of accrued and unpaid dividends for all quarterly
     dividend payment periods ending on or prior to the date such shares are
     surrendered to the corporation for conversion and for the partial dividend
     period beginning on the date immediately following the most recent Dividend
     Payment Date through and including the date on which such shares are
     surrendered for conversion. Notwithstanding the foregoing, holders of
     shares of Series A Preferred and Series B Preferred surrendered for
     conversion shall have the right to require the corporation to make
 
                                       11
<PAGE>   12
 
     payment in cash of all such accrued and unpaid dividends, in lieu of such
     adjustment to the Stated Value to the extent funds are legally available
     therefor.
 
          (b) The conversion of any share of Series A Preferred or Series B
     Preferred may be effected by the holder thereof by the surrender of the
     certificate for such share to the corporation at the principal office of
     the Transfer Agent or to such other agent or agents of the corporation as
     may be designated by the Board of Directors. If any shares of Series A
     Preferred or Series B Preferred are called for redemption pursuant to
     Section 7 hereof, such right of conversion shall cease and terminate as to
     the shares called for redemption at the close of business on the Business
     Day immediately preceding the redemption date, unless the corporation shall
     default in the payment of the Redemption Price, in which event such
     conversion right shall remain in effect until full payment of the
     Redemption Price has been made.
 
          (c) As promptly as practicable after the surrender of shares of Series
     A Preferred and Series B Preferred for conversion, the corporation shall
     issue and deliver or cause to be issued and delivered to the holder of such
     shares certificates representing the number (or fraction) of fully paid and
     non-assessable shares of Common Stock into which such shares of Series A
     Preferred and Series B Preferred have been converted in accordance with the
     provisions of this Section 10. Subject to the following provisions of this
     Section 10, such conversion shall be deemed to have been made as of the
     close of business on the date on which the shares of Series A Preferred and
     Series B Preferred shall have been surrendered for conversion in the manner
     herein provided, so that the rights of the holder of the shares of Series A
     Preferred and Series B Preferred so surrendered shall cease at such time,
     and the person or persons entitled to receive the shares of Common Stock
     upon conversion thereof shall be treated for all purposes as having become
     the record holder or holders of such shares of Common Stock at such time;
     provided, however, that any such surrender on any date when the stock
     transfer books of the corporation are closed shall be deemed to have been
     made, and shall be effective to terminate the rights of the holder or
     holders of the shares of Series A Preferred and Series B Preferred so
     surrendered for conversion and to constitute the person or persons entitled
     to receive such shares of Common Stock as the record holder or holders
     thereof for all purposes, at the opening of business on the next succeeding
     day on which such transfer books are open and such conversion shall be at
     the Conversion Price in effect at such time.
 
          (d) Before taking any action which would cause an adjustment reducing
     the Conversion Price below the then par value of the shares of Common Stock
     deliverable upon conversion of the shares of Series A Preferred and Series
     B Preferred, the corporation will take any corporate action which may, in
     the opinion of its counsel, be necessary in order that the corporation may
     validly and legally issue fully paid and non-assessable shares of Common
     Stock at such adjusted Conversion Price.
 
          (e) The Conversion Price shall be subject to adjustment from time to
     time as follows:
 
             (i) In case at any time the corporation shall (A) subdivide the
        outstanding shares of Common Stock into a greater number of shares, or
        (B) combine the outstanding shares of Common Stock into a smaller number
        of shares, the Conversion Price in effect immediately prior thereto
        shall be adjusted proportionately so that the adjusted Conversion Price
        shall bear the same relation to the Conversion Price in effect
        immediately prior to such event as the total number of shares of Common
        Stock outstanding immediately prior to such event shall bear to the
        total number of shares of Common Stock outstanding immediately after
        such event. Such adjustment shall become effective immediately after the
        effective date of a subdivision or combination.
 
             (ii) In case at any time the corporation shall declare, order, pay
        or make any dividend or other distribution to holders of the Common
        Stock payable in Common Stock, then in each such case, subject to
        Section 10(e)(v) hereof, the Conversion Price in effect immediately
        prior to the close of business on the record date fixed for
        determination of holders of any class of securities entitled to receive
        such dividend or distribution shall be reduced to a price (calculated to
        the nearest .001 of cent) determined by multiplying such Conversion
        Price by a fraction:
 
                (A) the numerator of which shall be the number of shares of
           Common Stock outstanding immediately prior to such dividend or
           distribution; and
 
                                       12
<PAGE>   13
 
                (B) the denominator of which shall be the number of shares of
           Common Stock outstanding immediately after such dividend or
           distribution.
 
        Shares of Common Stock owned by or held for the account of the
        corporation shall not be deemed outstanding for the purpose of any such
        computation. Such adjustment shall be made on the date such dividend is
        paid or such distribution is made and shall become effective retroactive
        to the record date for the determination of shareholders entitled to
        receive such dividend or distribution.
 
             (iii) In case at any time the corporation shall declare, order, pay
        or make any dividend or other distribution to all holders of the Common
        Stock, other than a dividend payable in shares of Common Stock
        (including, without limitation, dividends or distributions payable in
        cash, evidences of indebtedness, rights, options or warrants to
        subscribe or purchase any Common Stock or other securities, or any other
        securities or other property, but excluding any rights to purchase any
        stock or other securities if such rights are not separable from the
        Common Stock except upon the occurrence of a contingency beyond the
        control of the corporation), then, and in each such case, subject to
        Section 10(e)(v) hereof, the Conversion Price in effect immediately
        prior to the close of business on the record date fixed for the
        determination of holders of Common Stock entitled to receive such
        dividend or distribution shall be reduced to a price (calculated to the
        nearest .001 of a cent) determined by multiplying such Conversion Price
        by a fraction:
 
                (A) the numerator of which shall be the Market Price per share
           of Common Stock in effect as of such record date or, if the Common
           Stock trades on an ex-dividend basis, on the Trading Day immediately
           prior to the date of commencement of ex-dividend trading, less the
           value of such dividend or distribution (as determined in good faith
           by the Board of Directors of the corporation) applicable to one share
           of Common Stock, and
 
                (B) the denominator of which shall be such Market Price per
           share of Common Stock as of such record date or, if the Capital Stock
           trades on an ex-dividend basis, on the Trading Day immediately prior
           to the date of commencement of ex-dividend trading.
 
        Such adjustment shall be made on the date such dividend is paid or such
        distribution is made and shall become effective retroactive to the
        record date for the determination of shareholders entitled to receive
        such dividend or distribution.
 
             (iv) In case at any time the corporation issues or sells any shares
        of Common Stock or any rights, options or warrants to subscribe for or
        purchase shares of Common Stock or shares having the same rights,
        privileges and preferences as the Common Stock ("equivalent common
        stock") or securities convertible into Common Stock or equivalent common
        stock, at a price per share of Common Stock or equivalent common stock
        (or having a conversion price per share, if a security is convertible
        into shares of Common Stock or equivalent common stock) less than the
        Market Price of the Common Stock as of the date of such issue or sale,
        then upon such issue or sale the Conversion Price shall be reduced to
        such Conversion Price determined by multiplying the Conversion Price in
        effect immediately prior to such issue or sale by a fraction, (x) the
        numerator of which shall be the sum of the number of shares of Common
        Stock outstanding immediately prior to such issue or sale plus the
        number of shares of Common Stock which the aggregate offering price of
        the total number of shares of Common Stock and/or equivalent common
        stock so to be offered (and/or the aggregate initial conversion price of
        the convertible securities so to be offered) would purchase at such
        Market Price and (y) the denominator of which shall be the sum of the
        number of shares of Common Stock outstanding immediately prior to such
        issue or sale plus the number of additional shares of Common Stock
        and/or equivalent common 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 in a
        consideration part of or all of which shall be in a form other than
        cash, the value of such consideration shall be determined in good faith
        by the Board of Directors of the corporation. Shares of Common Stock
        owned by or held for the account of the corporation shall not be deemed
        outstanding for the purpose of any such computation. Such issue or sale
        adjustment shall be made successively upon the issuance or sale of
        shares of Common Stock or
 
                                       13
<PAGE>   14
 
        equivalent common stock or any rights, options or warrants to subscribe
        for or purchase Common Stock or equivalent common stock or securities
        convertible into common stock or equivalent common stock.
        Notwithstanding the foregoing, no adjustment of the Conversion Price
        pursuant to this Section 10(e)(iv) shall be made upon (A) the conversion
        or redemption of shares of Series A Preferred or Series B Preferred; (B)
        the payment of any stock dividend on the Series A Preferred or Series B
        Preferred; (C) the issuance of options to officers, directors and
        employees of the corporation and its subsidiaries, to purchase shares of
        Common Stock, including any such options as are issued and outstanding
        as of the Original Issue of the Series B Preferred; (D) the issuance and
        sale of Common Stock upon exercise of any rights, options or warrants
        referenced in the immediately preceding clause (C) or in Section
        10(e)(iii); or (E) the issuance and sale of Common Stock in an
        underwritten public offering at a price to the public of not less than
        95% of the Closing Price of the Common Stock on the date of the pricing
        of such offering.
 
             (v) If the amount of any adjustment of the Conversion Price
        required pursuant to this Paragraph 10 would be less than 1% of the
        Conversion Price in effect at the time such adjustment is otherwise so
        required to be made, such amount shall be carried forward and an
        adjustment with respect thereto made at the time of and together with
        any subsequent adjustment which, together with such amount and any other
        amount or amounts so carried forward, shall aggregate at least 1% of
        such Conversion Price. All calculations under this Section 10 shall be
        made to the nearest .001 of a cent.
 
             (vi) Except as herein otherwise expressly provided, for all
        purposes of this Section 10(e) the term "Common Stock" shall mean the
        Common Stock and any shares of stock or other class of capital stock of
        the corporation which is not preferred as to dividends or assets over
        any other class of capital stock of the corporation and which is not
        subject to redemption, or which is issued to the holders of shares of
        Common Stock upon any reclassification thereof.
 
          (f) In case at any time after the Original Issuance Date, the
     corporation shall be a party to any transaction (including without
     limitation, a merger, consolidation, statutory share exchange, sale of all
     or substantially all of the corporation's assets or recapitalization of the
     Common Stock), in each case as a result of which shares of Common Stock (or
     any other securities of the corporation then issuable upon conversion of
     the Series A Preferred or Series B Preferred) shall be converted to the
     right to receive stock, securities or other property (including cash or any
     combination thereof) (each of the foregoing transactions being referred to
     as a "Fundamental Change Transaction"), then the shares of Series A
     Preferred and Series B Preferred remaining outstanding will thereafter no
     longer be subject to conversion into Common Stock (or such other
     securities) pursuant to this Section 10, but instead each share shall be
     convertible into the kind and amount of stock and other securities and
     property receivable (including cash) upon the consummation of such
     Fundamental Change Transaction by a holder of that number of shares or
     fraction thereof of Common Stock (or such other securities) into which one
     share of Series A Preferred or Series B Preferred was convertible
     immediately prior to such Fundamental Change Transaction assuming such
     holder of Common Stock failed to exercise any right of election as to the
     kind of consideration to be received in such Fundamental Change
     Transaction. The corporation shall not be a party to any Fundamental Change
     Transaction after which shares of the Series A Preferred and Series B
     Preferred shall remain outstanding unless the terms of such Fundamental
     Change Transaction are consistent with the provisions of this Section
     10(f), and it shall not consent or agree to the occurrence of any such
     Fundamental Change Transaction until the corporation has entered into an
     agreement with the successor or purchasing entity, as the case may be, for
     the benefit of the holders of the shares of Series A Preferred and Series B
     Preferred which will contain provisions enabling the holders of shares of
     the Series A Preferred and Series B Preferred which remain outstanding
     after such Fundamental Change Transaction to convert such shares into the
     consideration received by holders of Common Stock (or any other securities
     of the corporation then issuable upon conversion of the Series A Preferred
     or Series B Preferred) at the Conversion Price immediately after such
     Fundamental Change Transaction. In the event that at any time, as a result
     of an adjustment made pursuant to this Section 10, the Series A Preferred
     and Series B Preferred shall become subject to conversion into any
     securities other than shares
 
                                       14
<PAGE>   15
 
     of Common Stock, thereafter the number of such other securities so issuable
     upon conversion of the shares of Series A Preferred and Series B Preferred
     shall be subject to adjustment from time to time in a manner and on terms
     nearly equivalent as practicable to the provisions with respect to the
     shares of Series A Preferred and Series B Preferred contained in this
     Section 10. The provisions of this Section 10(f) shall similarly apply to
     successive Fundamental Change Transactions.
 
          (g) Upon the occurrence of any event requiring an adjustment of the
     Conversion Price, then and in any such case the corporation shall promptly
     deliver to the holders of shares of Series A Preferred and Series B
     Preferred, a notice stating the Conversion Price resulting from such
     adjustment, the method of calculation thereof, and setting forth a brief
     statement of the facts requiring such adjustment and upon which such
     adjustment is based.
 
          (h) In case at any time:
 
             (i) the corporation shall declare or pay to all holders of Common
        Stock any dividend (whether payable in Common Stock, cash, securities or
        other property);
 
             (ii) there shall be any capital reorganization, or reclassification
        of the Common Stock of the corporation or consolidation or merger of the
        corporation with, or sale of all or substantially all of its assets to,
        another corporation or other entity;
 
             (iii) there shall be a voluntary or involuntary dissolution,
        liquidation, or winding-up of the corporation; or
 
             (iv) there shall be any other Fundamental Change Transaction;
 
     then, in any one or more of such cases, the corporation shall give to the
     holder of shares of Series A Preferred and Series B Preferred (A) at least
     15 days prior to any event referred to in clause (i) above and at least 30
     days prior to any event referred to in clause (ii), (iii) or (iv) above,
     written notice of the date on which the books of the corporation shall
     close or records shall be taken for such dividend or distribution or for
     determining rights to vote in respect of any such organization,
     reclassification, consolidation, merger, sale, dissolution, liquidation,
     winding-up, or Fundamental Change Transaction and (B) in the case of any
     such reorganization, reclassification, consolidation, merger, sale,
     dissolution, liquidation, winding-up, or Fundamental Change Transaction
     known to the corporation, at least 30 days prior written notice of the
     date, or if not then known, a reasonable approximation thereof by the
     corporation) when the same shall take place. Such notice in accordance with
     the foregoing clause (A) shall also specify, in the case of any such
     dividend or distribution, the date on which such holders of Common Stock
     shall be entitled thereto, and such notice in accordance with the foregoing
     clause (B) shall also specify the date on which such holders of Common
     Stock shall be entitled to exchange their Common Stock securities or other
     property deliverable upon such reorganization, reclassification,
     consolidation, merger, sale, dissolution, liquidation, winding-up, or
     Fundamental Change Transaction, as the case may be.
 
          (i) All shares of Common Stock issuable upon the conversion set forth
     in this Section 10 shall be validly issued, fully-paid and non-assessable.
 
     SECTION 11. RANKING.
 
          (a) The Series A Preferred and the Series B Preferred shall rank on a
     parity with each other as to payment of dividends and distributions and
     upon liquidation, dissolution or winding-up of the corporation. In the
     event the corporation is a party to any merger, consolidation or share
     exchange in which the Series A Preferred or Series B Preferred is converted
     or exchanged into any other securities, property, cash or other
     consideration, the securities, property, cash or other consideration into
     which the Series A Preferred and Series B Preferred, respectively, may be
     converted or exchanged shall be identical in kind and amount per share as
     that into which the Series B Preferred or Series A Preferred, as the case
     may be, may be converted or exchanged, and no shares of Series A Preferred
     or Series B Preferred shall be converted or exchanged therein into any
     securities, property, cash or other consideration unless all shares
 
                                       15
<PAGE>   16
 
     of Series A Preferred and Series B Preferred may be converted or exchanged
     into the same kind and amount per share of securities, property, cash or
     other consideration.
 
          (b) Without limiting the definition of Junior Securities, the
     following securities and obligations of the corporation shall rank junior
     to the Series A Preferred and Series B Preferred with respect to the
     payments required or permitted to be made to the holders thereof pursuant
     to their respective governing instruments and payments required to be made
     to the holders of the Series A Preferred and Series B Preferred pursuant
     hereto: the shares of Common Stock and Series A Junior Participating
     Preferred Stock, par value $.01 per share.
 
     SECTION 12. RECORD HOLDERS. The corporation and the Transfer Agent may deem
and treat the record holder of any shares of Series A Preferred and Series B
Preferred as the true and lawful owner thereof for all purposes, and neither the
corporation nor Transfer Agent shall be affected by any notice to the contrary.
 
     SECTION 13. NOTICE. Except as may otherwise be provided by law or provided
for herein, all notices referred to herein shall be in writing, and all notices
hereunder shall be deemed to have been given upon receipt, in the case of a
notice of conversion given to the corporation as contemplated in Section 10(b)
hereof, or, in all other cases, upon the earlier of receipt of such notice or
three Business Days after the mailing of such notices sent by Registered Mail
(unless first-class mail shall be specifically permitted for such notice under
the terms hereof) with postage prepaid, addressed: If to the corporation, to its
principal executive offices (Attention: Corporate Secretary) or to any agent of
the corporation designated as permitted hereby; or if to a holder of the Series
A Preferred and Series B Preferred, to such holder at the address of such holder
of the Series A Preferred and Series B Preferred as listed in the stock record
books of the corporation (which shall include the records of the Transfer
Agent), or to such other address as the corporation or holder, as the case may
be, shall have designated by notice similarly given.
 
     SECTION 14. AUTHORIZATION BY NON-SERIES A AND B DIRECTORS. A majority of
the Non-Series A and B Directors shall make (and no Series B Director shall be
entitled to vote on) any determination required or permitted to be made by the
Board of Directors on behalf of the corporation (i) pursuant to Section 7(c)
hereof, as to whether to make payment of the Redemption Price of the Series A
Preferred and Series B Preferred in cash or in kind, (ii) pursuant to Section
7(a) hereof, as to whether to exercise the corporation's option to redeem
outstanding shares of Series A Preferred or Series B Preferred, or (iii)
pursuant to Section 4(c) hereof, as to whether to make payment of any dividends
declared by the Board of Directors on the Series A Preferred and Series B
Preferred in cash or in kind; provided that, the Non-Series A and B Directors
shall not be entitled to make any determination to pay cash dividends unless the
corporation shall have sufficient cash legally available to make such payment in
full.
 
     SECTION 15. SUCCESSORS AND TRANSFEREES. The provisions applicable to shares
of Series A Preferred and Series B Preferred shall bind and inure to the benefit
of and be enforceable by the corporation, the respective successors to the
corporation, and by any record holder of shares of Series A Preferred and Series
B Preferred.
 
     SECTION 16. CONVERSION OF SERIES B TO SERIES A SHARES. Upon any transfer of
shares of Series B Preferred (or any transfer of beneficial ownership of such
shares) to any Person other than to any Partnership Affiliate, such shares shall
be automatically converted to shares of Series A Preferred on a one for one
basis, and as a condition to the registration of the transfer of such shares,
the certificate for the shares of Series B Preferred to be transferred shall be
surrendered to the Transfer Agent in exchange for the issuance of a certificate
for the same number of shares of Series A Preferred registered in the name of
the transferee. In addition, at such time as the Minimum Ownership Condition is
no longer met, all shares of Series B Preferred remaining outstanding shall be
automatically converted to shares of Series A Preferred on a one for one basis
and each holder of shares of Series B Preferred shall surrender to the Transfer
Agent the certificates for such shares in exchange for certificates for the same
number of shares of Series A Preferred registered in the name of such holder.
 
                                       16
<PAGE>   17
 
     RESOLVED FURTHER, that the appropriate officers of the corporation, be, and
they are hereby, authorized and directed from time to time to execute such
certificates, instruments or other documents and do all such things as may be
necessary or advisable in their discretion in order to carry out the terms
hereof, including the filing with the Secretary of State for the State of Texas
of a copy of the foregoing resolution executed by an officer of the corporation.
 
Dated: June 26, 1996.
 
                                           MESA INC.



                                           By:  /s/ STEPHEN K. GARDNER
                                               --------------------------------
                                                    Stephen K. Gardner
                                                    Vice President and
                                                    Chief Financial Officer



 
                                       17

<PAGE>   1
                                                                      EXHIBIT 4c


                             ARTICLES OF AMENDMENT

                                     TO THE

                              AMENDED AND RESTATED
                           ARTICLES OF INCORPORATION

                                       OF

                                   MESA INC.

                                 June 25, 1996


                 MESA Inc., a Texas corporation (the "Company"), pursuant to
the provisions of Article 4.02 and 4.04 of the Texas Business Corporation Act
(the "TBCA"), hereby adopts the following Articles of Amendment to the Amended
and Restated Articles of Incorporation of the Company (these "Articles of
Amendment"):


                                  ARTICLE ONE

                 The Amended and Restated Articles of Incorporation of the
Company (the "Articles of Incorporation") are hereby amended by these Articles
of Amendment as follows:

                 (a)      The first paragraph of Article IV of the Articles of
Incorporation is hereby amended to read as follows:

                 "The aggregate number of shares that the Company shall have
         the authority to issue is 1,100,000,000 shares, consisting of
         600,000,000 shares of Common Stock, par value $0.01 per share, and
         500,000,000 shares of Preferred Stock, par value $0.01 per share."
<PAGE>   2
                          (b)     Article VII of the Articles of Incorporation
is hereby deleted in its entirety and replaced with the following:

                                  "ARTICLE VII

                 Except to the extent required by the TBCA and as provided in
         the resolutions of the Board of Directors authorizing any series of
         preferred stock of the Company, no action required or permitted by the
         TBCA to be taken at any annual or special meeting of the shareholders
         of the Company may be taken without a meeting, and the power of
         shareholders to consent in writing, without a meeting, to the taking
         of any action is specifically denied."


                                  ARTICLE TWO

                 The amendments provided for in these Articles of Amendment
have been approved by the Board of Directors of the Company pursuant to
resolutions adopted on April 26, 1996, and these Articles of Amendment have
been duly adopted by the shareholders of the Company on June 25, 1996 (the
"Adoption Date") pursuant to Article 4.02 of the TBCA.


                                 ARTICLE THREE

                 On the Adoption Date, 64,050,009 shares of Common Stock were
outstanding, all of which were entitled to vote on these Articles of Amendment.
34,153,553 shares of Common Stock were voted in favor of these Articles of
Amendment and 8,532,498 shares of Common Stock were voted against these
Articles of Amendment.

                 On the Adoption Date, no shares of Preferred Stock were
outstanding and entitled to vote on these Articles of Amendment.
<PAGE>   3
                 IN WITNESS WHEREOF, these Articles of Incorporation have been
executed on the date first above written by the undersigned duly qualified and
acting officer of the Company.



                                           MESA INC.



                                           By:  /s/ STEPHEN K. GARDNER
                                               --------------------------------
                                                    Stephen K. Gardner
                                                    Vice President and
                                                    Chief Financial Officer

<PAGE>   1
                                                                   Exhibit 99.1



                               [MESA LETTERHEAD]

                                  NEWS RELEASE



FOR IMMEDIATE RELEASE                                      CONTACT:  JAY ROSSER
June 25, 1996                                                    (214) 402-7019


                MESA STOCKHOLDERS APPROVE EQUITY TRANSACTION

     APPROVAL REPRESENTS FIRST PHASE OF TOTAL CORPORATE RECAPITALIZATION


         (IRVING, TEXAS) -- MESA Inc. stockholders today approved the issuance
of $265 million in new convertible preferred stock, the first phase of a total
corporate recapitalization effort proposed by the company.

         During the special meeting, stockholders also rejected a proposed
1-for-4 reverse stock split.

         Approval of the equity issuance followed remarks by MESA Chairman and
CEO Boone Pickens in which he said the company should report a profit in the
second quarter of 1996, the company's first consecutive quarterly profit since
the fourth quarter of 1988 and the first quarter of 1989.

         A partnership controlled by Richard Rainwater will purchase $133
million of the new convertible preferred stock in the equity offering and will
purchase any stock not acquired by MESA stockholders in a planned $132 million
rights offering.

         In connection with the equity purchase, the Rainwater group will gain
four of seven seats on MESA's board of directors.

         In the rights offering, open to stockholders of record as of July 3,
1996, holders of common stock will receive .912 rights per share of common
stock held, with each right entitling

<PAGE>   2
the holder to purchase one share of new Series A preferred stock for $2.26, the
same price at which the Rainwater group will purchase its shares.

          No fractional rights or cash in lieu of fractional rights will be
distributed, and the number of rights distributed to each record holder will be
rounded up to the nearest whole number.

          The rights will include transferrable certificates that can be
traded on the New York Stock Exchange under the symbol MXPPrA-RT. In the rights
offering, holders of rights may either exercise the right to purchase the
preferred stock or sell those rights on the open market. The inherent value of
the rights will be lost if they are not exercised or sold.

           MESA's 1996 Annual Meeting is scheduled for July 30.


                                     ###

           (Copies of MESA news releases issued during the past 12 months are
available for retrieval on MESA's Internet home page: http://www.mesainc.com)




                                     -2-




<PAGE>   1
                                                                    Exhibit 99.2


                              [MESA LETTERHEAD]
                                 NEWS RELEASE


FOR IMMEDIATE RELEASE                                        CONTACT: JAY ROSSER
JUNE 25, 1996                                                     (214) 402-7019


                          MESA PRICES DEBT OFFERING


       ANNOUNCEMENT FOLLOWS STOCKHOLDER APPROVAL OF EQUITY TRANSACTION

        (IRVING, TEXAS) - MESA Inc. announced today the pricing of $325 million
principal amount of 10 5/8 percent senior subordinated notes due July 1, 2006
and its 11 5/8 percent senior subordinated discount notes due July 1, 2006,
which will yield $150 million in gross proceeds.

        The note issuance represents the first phase of a complete corporate
recapitalization that was triggered today by stockholder approval at a special
meeting of the company's plans to issue $265 million in new convertible
preferred stock.

        MESA will use the proceeds from the new equity to reduce debt and will
use the proceeds of the note issuance and a new bank credit facility, together
with cash on hand, to repay and refinance the remainder of the company's
outstanding debt.

        The notes are being issued pursuant to an underwritten public offering
for which Chase Securities Inc. served as lead manager and BT Securities Inc.,
Donaldson Lufkin and Jenrette Securities Corporation and Merrill Lynch & Co.
served as co-managers. The offering is expected to close on July 2, 1996.


                                     ###

        (Copies of MESA news releases issued during the past 12 months are
available for retrieval on MESA's Internet home page: http://www.mesainc.com)


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