THIOKOL CORP /DE/
8-K/A, 1997-05-28
GUIDED MISSILES & SPACE VEHICLES & PARTS
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                     SECURITIES AND EXCHANGE COMMISSION

                           Washington, D.C. 20549
                                 ---------


                                  FORM 8-K/A

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


      Date of Report (Date of earliest event reported): May 22, 1997



                            Thiokol Corporation
   ---------------------------------------------------------------------
           (Exact name of registrant as specified in its charter)


                                  Delaware
   _____________________________________________________________________
              (State or other jurisdiction of incorporation)


          1-6179                                     36-2678716
    ------------------------              -------------------------------
    Commission File Number                (IRS Employer Identification No.)


2475 Washington Boulevard, Ogden, Utah                     84401-2398
- -------------------------------------                --------------------
(Address of principal executive offices)                   (Zip Code)



                               (801) 629-2000
                          ------------------------
                      (Registrant's Telephone Number)



<PAGE>




ITEM 5 - OTHER EVENTS

     On May 22, 1997,  the Board of Directors of Thiokol  Corporation  (the
"Company")  declared a dividend of one preferred  share  purchase  right (a
"Right") for each  outstanding  share of common stock,  par value $1.00 per
share (the "Common Shares"), of the Company. The dividend is payable on May
30, 1997 (the "Record  Date") to the  stockholders  of record on that date.
Each Right entitles the registered  holder to purchase from the Company one
one-hundredth of a share of Series A Junior Participating  Preferred Stock,
par value  $1.00 per share (the  "Preferred  Shares"),  of the Company at a
price of $240 per one  one-hundredth  of a Preferred  Share (the  "Purchase
Price"), subject to adjustment. The description and terms of the Rights are
set  forth in a Rights  Agreement  (the  "Rights  Agreement")  between  the
Company and First  Chicago  Trust Company of New York, as Rights Agent (the
"Rights Agent").

     Until  the  earlier  to  occur  of  (i) 10  days  following  a  public
announcement that a person or group of affiliated or associated persons (an
"Acquiring  Person") have acquired  beneficial  ownership of 15% or more of
the outstanding  Common Shares or (ii) 10 business days (or such later date
as may be determined by action of the Board of Directors prior to such time
as any person or group of affiliated  persons becomes an Acquiring  Person)
following the  commencement  of, or announcement of an intention to make, a
tender offer or exchange  offer the  consummation  of which would result in
the  beneficial  ownership  by a  person  or  group  of 15% or  more of the
outstanding  Common  Shares  (the  earlier of such dates  being  called the
"Distribution Date"), the Rights will be evidenced,  with respect to any of
the Common Share  certificates  outstanding  as of the Record Date, by such
Common Share  certificate  with a copy of this  Summary of Rights  attached
thereto.

     The Rights Agreement  provides that,  until the Distribution  Date (or
earlier  redemption  or  expiration  of the  Rights),  the  Rights  will be
transferred  with and only with the Common Shares.  Until the  Distribution
Date (or earlier redemption or expiration of the Rights),  new Common Share
certificates  issued after the Record Date upon transfer or new issuance of
Common Shares will contain a notation incorporating the Rights Agreement by
reference. Until the Distribution Date (or earlier redemption or expiration
of the Rights),  the surrender for transfer of any  certificates for Common
Shares  outstanding as of the Record Date,  even without such notation or a
copy of this Summary of Rights being attached thereto, will also constitute
the transfer of the Rights associated with the Common Shares represented by
such certificate.  As soon as practicable  following the Distribution Date,
separate certificates  evidencing the Rights ("Right Certificates") will be
mailed  to  holders  of  record  of the  Common  Shares  as of the close of
business on the  Distribution  Date and such  separate  Right  Certificates
alone will evidence the Rights.

                                     1
<PAGE>

     The Rights are not exercisable until the Distribution Date. The Rights
will expire on May 30, 2007 (the "Final Expiration Date"), unless the Final
Expiration  Date is extended  or unless the Rights are earlier  redeemed or
exchanged by the Company, in each case, as described below.

     The Purchase  Price  payable,  and the number of  Preferred  Shares or
other  securities  or property  issuable,  upon  exercise of the Rights are
subject  to  adjustment  from time to time to prevent  dilution  (i) in the
event  of  a  stock   dividend  on,  or  a   subdivision,   combination  or
reclassification  of, the Preferred Shares,  (ii) upon the grant to holders
of the Preferred  Shares of certain  rights or warrants to subscribe for or
purchase  Preferred  Shares  at a price,  or  securities  convertible  into
Preferred Shares with a conversion price, less than the then-current market
price of the Preferred  Shares or (iii) upon the distribution to holders of
the  Preferred  Shares of evidences of  indebtedness  or assets  (excluding
regular  periodic cash dividends paid out of earnings or retained  earnings
or dividends  payable in  Preferred  Shares) or of  subscription  rights or
warrants (other than those referred to above).

     The number of outstanding  Rights and the number of one one-hundredths
of a Preferred  Share issuable upon exercise of each Right are also subject
to adjustment in the event of a stock split of the Common Shares or a stock
dividend on the Common  Shares  payable in Common  Shares or  subdivisions,
consolidations or combinations of the Common Shares occurring,  in any such
case, prior to the Distribution Date.

     Preferred  Shares  purchasable upon exercise of the Rights will not be
redeemable. Each Preferred Share will be entitled to a minimum preferential
quarterly  dividend  payment  of $1 per  share but will be  entitled  to an
aggregate  dividend of 100 times the dividend declared per Common Share. In
the event of  liquidation,  the  holders of the  Preferred  Shares  will be
entitled to a minimum  preferential  liquidation  payment of $100 per share
but will be entitled to an aggregate  payment of 100 times the payment made
per Common Share. Each Preferred Share will have 100 votes, voting together
with the Common Shares. Finally, in the event of any merger,  consolidation
or other  transaction in which Common Shares are exchanged,  each Preferred
Share will be entitled to receive 100 times the amount  received per Common
Share. These rights are protected by customary antidilution provisions.

     Because of the nature of the Preferred Shares'  dividend,  liquidation
and  voting  rights,  the  value  of the one  one-hundredth  interest  in a
Preferred Share purchasable upon exercise of each Right should  approximate
the value of one Common Share.

     In the  event  that the  Company  is  acquired  in a  merger  or other
business combination  transaction or 50% or more of its consolidated assets
or earning  power are sold after a person or group has become an  Acquiring
Person,  proper  provision will be made so that each holder of a Right will
thereafter have the right to receive, upon the 

                                     2
<PAGE>

exercise  thereof at the then  current  exercise  price of the Right,  that
number of shares of common stock of the acquiring company which at the time
of such  transaction  will have a market  value of two  times the  exercise
price of the Right.  In the event that any person or group of affiliated or
associated  persons becomes an Acquiring Person,  proper provision shall be
made so that each holder of a Right,  other than Rights  beneficially owned
by the Acquiring  Person (which will  thereafter be void),  will thereafter
have the right to receive upon exercise that number of Common Shares having
a market value of two times the exercise price of the Right.

     At any time after any person or group becomes an Acquiring  Person and
prior  to the  acquisition  by such  person  or group of 50% or more of the
outstanding  Common  Shares,  the Board of  Directors  of the  Company  may
exchange the Rights  (other than Rights owned by such person or group which
will have become void),  in whole or in part,  at an exchange  ratio of one
Common Share, or one one-hundredth of a Preferred Share (or of a share of a
class or series of the Company's  preferred stock having equivalent rights,
preferences and privileges), per Right (subject to adjustment).

     With certain  exceptions,  no adjustment in the Purchase Price will be
required until cumulative  adjustments require an adjustment of at least 1%
in such  Purchase  Price.  No  fractional  Preferred  Shares will be issued
(other than fractions which are integral  multiples of one one-hundredth of
a Preferred Share, which may, at the election of the Company,  be evidenced
by depositary  receipts) and in lieu thereof, an adjustment in cash will be
made based on the market price of the Preferred  Shares on the last trading
day prior to the date of exercise.

     At  any  time  prior  to the  acquisition  by a  person  or  group  of
affiliated or associated persons of beneficial  ownership of 15% or more of
the  outstanding  Common Shares,  the Board of Directors of the Company may
redeem the Rights in whole,  but not in part,  at a price of $.01 per Right
(the  "Redemption  Price").  The  redemption  of the  Rights  may  be  made
effective at such time on such basis with such  conditions  as the Board of
Directors  in its  sole  discretion  may  establish.  Immediately  upon any
redemption of the Rights,  the right to exercise the Rights will  terminate
and the  only  right  of the  holders  of  Rights  will be to  receive  the
Redemption Price.

     The terms of the Rights may be  amended by the Board of  Directors  of
the Company without the consent of the holders of the Rights,  including an
amendment to lower certain thresholds  described above to not less than the
greater  of  (i)  the  sum of  .001%  and  the  largest  percentage  of the
outstanding  Common  Shares  then known to the  Company to be  beneficially
owned by any person or group of affiliated  or associated  persons and (ii)
10%,  except  that  from and  after  such  time as any  person  or group of
affiliated  or  associated  persons  becomes  an  Acquiring  Person no such
amendment may adversely affect the interests of the holders of the Rights.

                                     3
<PAGE>

     Until a Right is exercised,  the holder thereof, as such, will have no
rights as a stockholder of the Company, including,  without limitation, the
right to vote or to receive dividends.

     The Rights have certain  anti-takeover  effects. The Rights will cause
substantial  dilution  to a person or group that  attempts  to acquire  the
Company on terms not approved by the Company's  Board of Directors,  except
pursuant to an offer  conditioned  on a substantial  number of Rights being
acquired. The Rights should not interfere with any merger or other business
combination  approved  by the Board of  Directors  since the  Rights may be
redeemed  by the  Company at $.01 per Right prior to the time that a person
or group has  acquired  beneficial  ownership  of 15% or more of the Common
Shares.

     The Rights  Agreement,  dated as of May 22, 1997,  between the Company
and First Chicago Trust Company of New York, as Rights Agent, specifies the
terms of the  Rights  and  includes  the Form Of Rights  Certificate  as an
exhibit  thereto.  The foregoing  description of the Rights is qualified in
its entirety by reference to such exhibits.

     On May 22,  1997,  the  Board of  Directors  redeemed  the  previously
outstanding  Rights at a redemption price of $.01 per right payable on June
13, 1989, to holders of record of Common  Shares (to which the  outstanding
rights are attached) on May 30, 1997.

ITEM 7 - FINANCIAL STATEMENTS AND EXHIBITS

(C) Exhibits

Exhibit No. 4              Rights Agreement between
                           Thiokol Corporation and
                           First Chicago Trust Company of New York
                           Rights Agent
                           Dated as of May 22, 1997

                                     4
<PAGE>



                                 SIGNATURE

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



                                              THIOKOL CORPORATION
                                                  (Registrant)


                                                  /s/ Edwin M. North
Dated:  May 27, 1997                   By:      __________________________
                                                    Edwin M. North
                                                    Corporate Secretary


                                     5
<PAGE>


EXHIBIT INDEX




Exhibit No. 4              Rights Agreement between
                           Thiokol Corporation and
                           First Chicago Trust Company of New York,
                           Rights Agreement
                           Dated as of May 22, 1997


                                     6
<PAGE>





                                                                  Exhibit 4
                                                                  ---------









                            Thiokol Corporation


                                    and


                  First Chicago Trust Company of New York

                                Rights Agent



                              Rights Agreement

                          Dated as of May 22, 1997















<PAGE>

                             TABLE OF CONTENTS

                                                                        Page
Section 1.  Certain Definitions                                           1

Section 2.  Appointment of Rights Agent                                   6

Section 3.  Issue of Right Certificates                                   6

Section 4.  Form of Right Certificates                                    9

Section 5.  Countersignature and Registration                             9

Section 6.  Transfer, Split Up, Combination and
                   Exchange of Right Certificates;
                   Mutilated, Destroyed, Lost or
                   Stolen Right Certificates                             10

Section 7.  Exercise of Rights; Purchase Price;
                   Expiration Date of Rights                             11

Section 8.  Cancellation and Destruction of
                   Right Certificates                                    13

Section 9.  Availability of Common Shares                                14

Section 10. Preferred Shares Record Date                                 15

Section 11. Adjustment of Purchase Price, Number of
                   Shares or Number of Rights                            15

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

Section 13. Consolidation, Merger or Sale or Transfer
                    of Assets or Earning Power                           27

Section 14. Fractional Rights and Fractional Shares                      29

Section 15. Rights of Action                                             31

Section 16. Agreement of Right Holders                                   31
<PAGE>

Section 17. Right Certificate Holder Not Deemed a
                   Stockholder                                           32

 Section 18. Concerning the Rights Agent                                 33

Section 19. Merger or Consolidation or Change of
                    Name of Rights Agent                                 33

Section 20. Duties of Rights Agent                                       35

Section 21. Change of Rights Agent                                       37

Section 22. Issuance of New Right Certificates                           37

Section 23. Redemption                                                   37

Section 24. Exchange                                                     40

Section 25. Notice of Certain Events                                     43

Section 26. Notices                                                      44

Section 27. Supplements and Amendments                                   45

Section 28. Successors                                                   46

Section 29. Benefits of this Agreement                                   46

Section 30. Severability                                                 46

Section 31. Governing Law                                                46

Section 32. Counterparts                                                 47

Section 33. Descriptive Headings                                         47

Signatures                                                               47


Exhibit A - Form of Right Certificate                                    A-1

Exhibit B - Summary of Rights to Purchase Preferred
                   Shares                                                B-1



<PAGE>


     Agreement,  dated as of May 22, 1997, between Thiokol  Corporation,  a
Delaware  corporation (the  "Company"),  and First Chicago Trust Company of
New York (the "Rights Agent").

     The Board of  Directors of the Company has  authorized  and declared a
dividend of one preferred  share purchase right (a "Right") for each Common
Share (as hereinafter  defined) of the Company  outstanding on May 30, 1997
(the  "Record  Date"),  each Right  representing  the right to purchase one
one-hundredth of a Preferred Share (as hereinafter defined), upon the terms
and subject to the conditions herein set forth, and has further  authorized
and  directed  the  issuance of one Right with respect to each Common Share
that shall become  outstanding  between the Record Date and the earliest of
the  Distribution  Date, the Redemption Date and the Final  Expiration Date
(as such terms are hereinafter defined).

     Accordingly,   in   consideration  of  the  premises  and  the  mutual
agreements herein set forth, the parties hereby agree as follows:

     Section 1. CERTAIN  DEFINITIONS.  For purposes of this Agreement,  the
following terms have the meanings indicated:

     (a)  "Acquiring  Person"  shall  mean  any  Person  (as  such  term is
hereinafter  defined)  who or  which,  together  with  all  Affiliates  and
Associates (as such terms are hereinafter defined) of such Person, shall be
the Beneficial  Owner (as such term is hereinafter  defined) of 15% or more
of the Common Shares of the Company then 


<PAGE>
outstanding,  but shall not include the Company,  any  Subsidiary  (as such
term is hereinafter  defined) of the Company,  any employee benefit plan of
the Company or any Subsidiary of the Company,  or any entity holding Common
Shares for or pursuant to the terms of any such plan.  Notwithstanding  the
foregoing, no Person shall become an "Acquiring Person" as the result of an
acquisition of Common Shares by the Company  which,  by reducing the number
of  shares  outstanding,  increases  the  proportionate  number  of  shares
beneficially  owned by such  Person to 15% or more of the Common  Shares of
the Company then  outstanding;  PROVIDED,  HOWEVER,  that if a Person shall
become  the  Beneficial  Owner of 15% or more of the  Common  Shares of the
Company then  outstanding  by reason of share  purchases by the Company and
shall,  after such share  purchases by the Company,  become the  Beneficial
Owner of any  additional  Common  Shares of the  Company,  then such Person
shall be deemed to be an "Acquiring Person". Notwithstanding the foregoing,
if the Board of  Directors of the Company  determines  in good faith that a
Person who would otherwise be an "Acquiring Person", as defined pursuant to
the  foregoing   provisions  of  this   paragraph   (a),  has  become  such
inadvertently,  and such  Person  divests  as  promptly  as  practicable  a
sufficient  number of Common  Shares so that such Person would no longer be
an "Acquiring  Person," as defined pursuant to the foregoing  provisions of
this  paragraph  (a),  then  such  Person  shall  not  be  deemed  to be an
"Acquiring Person" for any purposes of this Agreement.

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

     (c) A Person  shall be deemed the  "Beneficial  Owner" of and shall be
deemed to "beneficially own" any securities:

     (i) which such Person or any of such Person's Affiliates or Associates
beneficially owns, directly or indirectly;

     (ii)  which  such  Person  or  any  of  such  Person's  Affiliates  or
Associates has (A) the right to acquire  (whether such right is exercisable
immediately  or only after the passage of time)  pursuant to any agreement,
arrangement  or  understanding  (other than customary  agreements  with and
between  underwriters and selling group members with respect to a bona fide
public offering of securities),  or upon the exercise of conversion rights,
exchange rights, rights (other than these Rights),  warrants or options, or
otherwise;  provided,  however,  that a  Person  shall  not be  deemed  the
Beneficial Owner of, or to beneficially own,  securities  tendered pursuant
to a tender or exchange offer made by or on behalf of such Person or any of
such Person's  Affiliates or Associates until such tendered  securities are
accepted for purchase or exchange; or (B) the right to vote pursuant to any
agreement,  arrangement or understanding;  PROVIDED, HOWEVER, that a Person
shall not be deemed the Beneficial  Owner of, or to  beneficially  own, any
security  if the  agreement,  arrangement  or  understanding  to vote  such
security (1)

                                     3
<PAGE>
arises  solely  from a revocable  proxy or consent  given to such Person in
response to a public proxy or consent solicitation made pursuant to, and in
accordance with, the applicable rules and regulations promulgated under the
Exchange Act and (2) is not also then  reportable on Schedule 13D under the
Exchange Act (or any comparable or successor report); or

     (iii) which are  beneficially  owned,  directly or indirectly,  by any
other Person with which such Person or any of such  Person's  Affiliates or
Associates has any  agreement,  arrangement  or  understanding  (other than
customary  agreements  with and  between  underwriters  and  selling  group
members with respect to a bona fide public  offering of securities) for the
purpose of acquiring, holding, voting (except to the extent contemplated by
the proviso to Section  1(c)(ii)(B))  or disposing of any securities of the
Company.

     Notwithstanding anything in this definition of Beneficial Ownership to
the contrary,  the phrase "then outstanding," when used with reference to a
Person's Beneficial Ownership of securities of the Company,  shall mean the
number of such  securities  then issued and  outstanding  together with the
number of such securities not then actually  issued and  outstanding  which
such Person would be deemed to own beneficially hereunder.
                                     4
<PAGE>
     (d) "Business Day" shall mean any day other than a Saturday, a Sunday,
or a day on  which  banking  institutions  in the  State  of New  York  are
authorized or obligated by law or executive order to close.

     (e) "Close of  business"  on any given date shall mean 5:00 P.M.,  New
York City time, on such date; PROVIDED, HOWEVER, that if such date is not a
Business  Day it shall  mean 5:00  P.M.,  New York City  time,  on the next
succeeding Business Day.

     (f) "Common Shares" when used with reference to the Company shall mean
the shares of common  stock,  par value  $1.00 per share,  of the  Company.
"Common  Shares"  when used with  reference  to any  Person  other than the
Company shall mean the capital stock (or equity interest) with the greatest
voting  power of such other Person or, if such other Person is a Subsidiary
of another  Person,  the Person or Persons  which  ultimately  control such
first-mentioned Person.

     (g) "Distribution  Date" shall have the meaning set forth in Section 3
hereof.

     (h)  "Final  Expiration  Date"  shall  have the  meaning  set forth in
Section 7 hereof.

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

     (j)   "Preferred   Shares"  shall  mean  shares  of  Series  A  Junior
Participating  Preferred  Stock, par value $1.00 per share, of the Company.
                                     5
<PAGE>
     (k)  "Redemption  Date"  shall have the meaning set forth in Section 7
hereof.

     (l)  "Shares  Acquisition  Date"  shall  mean the first date of public
announcement by the Company or an Acquiring Person that an Acquiring Person
has become such.

     (m)  "Subsidiary"  of any Person shall mean any  corporation  or other
entity  of  which a  majority  of the  voting  power of the  voting  equity
securities or equity  interest is owned,  directly or  indirectly,  by such
Person.

     Section 2.  APPOINTMENT OF RIGHTS AGENT.  The Company hereby  appoints
the Rights  Agent to act as agent for the  Company  and the  holders of the
Rights  (who,  in  accordance  with  Section 3 hereof,  shall  prior to the
Distribution  Date also be the holders of the Common  Shares) in accordance
with the terms and conditions  hereof,  and the Rights Agent hereby accepts
such appointment.  The Company may from time to time appoint such co-Rights
Agents as it may deem necessary or desirable.

     Section 3. ISSUE OF RIGHT  CERTIFICATES.  (a) Until the earlier of (i)
the tenth day after the Shares  Acquisition Date or (ii) the tenth business
day (or such  later  date as may be  determined  by  action of the Board of
Directors  prior to such time as any Person  becomes an  Acquiring  Person)
after the date of the  commencement  by any Person (other than the Company,
any Subsidiary of the Company,  any employee benefit plan of the Company or
of any Subsidiary of the Company or any entity holding Common Shares for or
pursuant  to the  terms  of any  such  plan)  of,  or of the  first  public
announcement  of the
                                     6
<PAGE>
intention of any Person  (other than the  Company,  any  Subsidiary  of the
Company,  any employee  benefit plan of the Company or of any Subsidiary of
the  Company or any entity  holding  Common  Shares for or  pursuant to the
terms of any such  plan)  to  commence,  a tender  or  exchange  offer  the
consummation  of which would result in any Person  becoming the  Beneficial
Owner of  Common  Shares  aggregating  15% or more of the then  outstanding
Common  Shares  (including  any such  date  which is after the date of this
Agreement  and prior to the  issuance  of the  Rights;  the earlier of such
dates being herein referred to as the "Distribution  Date"), (x) the Rights
will be evidenced (subject to the provisions of Section 3(b) hereof) by the
certificates  for  Common  Shares  registered  in the names of the  holders
thereof (which  certificates shall also be deemed to be Right Certificates)
and not by separate Right Certificates,  and (y) the right to receive Right
Certificates  will be transferable  only in connection with the transfer of
Common Shares.  As soon as  practicable  after the  Distribution  Date, the
Company will prepare and execute,  the Rights Agent will  countersign,  and
the Company  will send or cause to be sent (and the Rights  Agent will,  if
requested,  send) by first-class,  insured,  postage-prepaid  mail, to each
record  holder  of  Common  Shares  as of  the  close  of  business  on the
Distribution  Date,  at the address of such holder  shown on the records of
the Company,  a Right  Certificate,  in substantially the form of Exhibit A
hereto (a "Right Certificate"),  evidencing one Right for each Common Share
so held. As of the  Distribution  Date, the Rights will be evidenced solely
by such Right Certificates.
                                     7
<PAGE>

     (b) On the Record  Date,  or as soon as  practicable  thereafter,  the
Company  will send a copy of a Summary  of  Rights  to  Purchase  Preferred
Shares,  in  substantially  the form of Exhibit B hereto  (the  "Summary of
Rights"),  by first-class,  postage-prepaid  mail, to each record holder of
Common  Shares as of the  close of  business  on the  Record  Date,  at the
address of such holder shown on the records of the Company. With respect to
certificates for Common Shares outstanding as of the Record Date, until the
Distribution  Date,  the  Rights  will be  evidenced  by such  certificates
registered in the names of the holders thereof  together with a copy of the
Summary of Rights attached  thereto.  Until the  Distribution  Date (or the
earlier of the Redemption Date or the Final Expiration Date), the surrender
for transfer of any certificate for Common Shares outstanding on the Record
Date,  with or without a copy of the  Summary of Rights  attached  thereto,
shall also constitute the transfer of the Rights associated with the Common
Shares represented thereby.

     (c)   Certificates   for  Common   Shares  which  become   outstanding
(including, without limitation, reacquired Common Shares referred to in the
last sentence of this paragraph (c)) after the Record Date but prior to the
earliest  of the  Distribution  Date,  the  Redemption  Date  or the  Final
Expiration  Date  shall  have  impressed  on,  printed  on,  written  on or
otherwise affixed to them the following legend:

         This  certificate also evidences and entitles the holder hereof to
         certain rights as set forth in a Rights Agreement  between Thiokol
         Corporation and First Chicago Trust Company of New York,  dated as
         of May 22, 1997 (the "Rights  Agreement"),  the terms of which are
         hereby  incorporated herein by reference and a copy of which is on
         file at the  principal  executive  offices of Thiokol  Corporation
         Under certain
                                     8

<PAGE>

     circumstances,  as set forth in the Rights Agreement, such Rights will
     be evidenced by separate  certificates and will no longer be evidenced
     by this  certificate.  Thiokol  Corporation will mail to the holder of
     this certificate a copy of the Rights  Agreement  without charge after
     receipt of a written request therefor. Under certain circumstances, as
     set forth in the  Rights  Agreement,  Rights  issued to any Person who
     becomes an Acquiring  Person (as defined in the Rights  Agreement) may
     become null and void.


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

     Section 4. FORM OF RIGHT CERTIFICATES. The Right Certificates (and the
forms of election  to purchase  Preferred  Shares and of  assignment  to be
printed on the reverse thereof) shall be substantially  the same as Exhibit
A hereto and may have such marks of  identification or designation and such
legends,  summaries or endorsements printed thereon as the Company may deem
appropriate  and as are  not  inconsistent  with  the  provisions  of  this
Agreement,  or as may be required to comply with any applicable law or with
any rule or regulation made pursuant thereto or with any rule or regulation
of any stock  exchange on which the Rights may from time to time be listed,
or to conform to 

                                     9
<PAGE>
usage.   Subject  to  the  provisions  of  Section  22  hereof,  the  Right
Certificates  shall entitle the holders  thereof to purchase such number of
one  one-hundredths  of a Preferred  Share as shall be set forth therein at
the price per one one-hundredth of a Preferred Share set forth therein (the
"Purchase Price"), but the number of such one one-hundredths of a Preferred
Share and the  Purchase  Price shall be subject to  adjustment  as provided
herein.

     Section 5.  COUNTERSIGNATURE AND REGISTRATION.  The Right Certificates
shall be executed  on behalf of the  Company by its  Chairman of the Board,
its Chief Executive Officer, its President, any of its Vice Presidents,  or
its  Treasurer,  either  manually  or by  facsimile  signature,  shall have
affixed  thereto the Company's  seal or a facsimile  thereof,  and shall be
attested by the Secretary or an Assistant Secretary of the Company,  either
manually  or by  facsimile  signature.  The  Right  Certificates  shall  be
manually  countersigned  by the Rights Agent and shall not be valid for any
purpose unless countersigned.  In case any officer of the Company who shall
have signed any of the Right Certificates shall cease to be such officer of
the Company  before  countersignature  by the Rights Agent and issuance and
delivery by the  Company,  such Right  Certificates,  nevertheless,  may be
countersigned  by the Rights Agent and issued and  delivered by the Company
with the same force and  effect as though the person who signed  such Right
Certificates  had not  ceased to be such  officer of the  Company;  and any
Right Certificate may be signed on behalf of the Company by any person who,
at the actual date of the execution of such Right  Certificate,  shall be a
proper officer of the Company to sign such
                                    10
<PAGE>

Right  Certificate,  although at the date of the  execution  of this Rights
Agreement any such person was not such an officer.

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

     Section 6.  TRANSFER,  SPLIT UP,  COMBINATION  AND  EXCHANGE  OF RIGHT
CERTIFICATES;  MUTILATED,  DESTROYED,  LOST OR STOLEN  RIGHT  CERTIFICATES.
Subject to the provisions of Section 14 hereof, at any time after the close
of  business  on the  Distribution  Date,  and at or prior to the  close of
business  on the  earlier of the  Redemption  Date or the Final  Expiration
Date,  any  Right  Certificate  or Right  Certificates  (other  than  Right
Certificates  representing Rights that have become void pursuant to Section
11(a)(ii) hereof or that have been exchanged pursuant to Section 24 hereof)
may be  transferred,  split up,  combined or  exchanged  for another  Right
Certificate  or Right  Certificates,  entitling  the  registered  holder to
purchase a like number of one  one-hundredths  of a Preferred  Share as the
Right  Certificate  or Right  Certificates  surrendered  then entitled such
holder to purchase.  Any registered holder desiring to transfer,  split up,
combine or exchange any Right Certificate or Right  Certificates shall make
such request in writing  delivered to the Rights Agent, and shall surrender
the Right  Certificate or Right  Certificates to be transferred,  split up,
combined  or  exchanged  at  the  principal  office  of the
                                    11
<PAGE>
Rights Agent.  Thereupon the Rights Agent shall  countersign and deliver to
the person entitled thereto a Right Certificate or Right  Certificates,  as
the case may be, as so requested.  The Company may require payment of a sum
sufficient to cover any tax or  governmental  charge that may be imposed in
connection  with any transfer,  split up,  combination or exchange of Right
Certificates.

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

     Section 7.  EXERCISE OF RIGHTS;  PURCHASE  PRICE;  Expiration  Date of
Rights. (a) The registered holder of any Right Certificate may exercise the
Rights evidenced thereby (except as otherwise  provided herein) in whole or
in part at any time after the Distribution Date upon surrender of the Right
Certificate,  with the form of election  to  purchase  on the reverse  side
thereof duly executed,  to the Rights Agent at the principal  office of the
Rights  Agent,  together  with payment of the  Purchase  Price for each one
one-hundredth of a Preferred Share as to which the Rights are exercised, at
or prior to the  earliest of (i) the close of business on May 30, 2007 (the
"Final Expiration Date"), (ii)
                                    12
<PAGE>
the time at which the Rights are  redeemed as provided in Section 23 hereof
(the  "Redemption  Date"),  or  (iii)  the time at which  such  Rights  are
exchanged as provided in Section 24 hereof.

     (b) The Purchase Price for each one one-hundredth of a Preferred Share
purchasable  pursuant to the  exercise of a Right shall  initially be $240,
and shall be subject to adjustment from time to time as provided in Section
11 or 13 hereof and shall be payable in lawful  money of the United  States
of America in accordance with paragraph (c) below.

     (c)  Upon  receipt  of a Right  Certificate  representing  exercisable
Rights, with the form of election to purchase duly executed, accompanied by
payment of the Purchase  Price for the shares to be purchased and an amount
equal to any  applicable  transfer tax required to be paid by the holder of
such Right  Certificate  in  accordance  with Section 9 hereof by certified
check,  cashier's check or money order payable to the order of the Company,
the Rights  Agent shall  thereupon  promptly (i) (A)  requisition  from any
transfer  agent of the  Preferred  Shares  certificates  for the  number of
Preferred  Shares  to be  purchased  and  the  Company  hereby  irrevocably
authorizes  its  transfer  agent to comply with all such  requests,  or (B)
requisition from the depositary agent depositary receipts representing such
number of one  one-hundredths  of a Preferred  Share as are to be purchased
(in which case  certificates for the Preferred  Shares  represented by such
receipts  shall be  deposited  by the  transfer  agent with the  depositary
agent) and the Company hereby  directs the depositary  agent to comply with
such  request,  (ii) when
                                    13
<PAGE>
appropriate,  requisition from the Company the amount of cash to be paid in
lieu of issuance of fractional shares in accordance with Section 14 hereof,
(iii) after receipt of such certificates or depositary receipts,  cause the
same to be delivered to or upon the order of the registered  holder of such
Right Certificate, registered in such name or names as may be designated by
such holder and (iv) when appropriate,  after receipt, deliver such cash to
or upon the order of the registered holder of such Right Certificate.

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

     Section 8.  CANCELLATION  AND DESTRUCTION OF RIGHT  CERTIFICATES.  All
Right Certificates surrendered for the purpose of exercise, transfer, split
up,  combination or exchange shall, if surrendered to the Company or to any
of its agents,  be  delivered to the Rights  Agent for  cancellation  or in
cancelled form, or, if surrendered to the Rights Agent,  shall be cancelled
by it, and no Right  Certificates shall be issued in lieu thereof except as
expressly permitted by any of the provisions of this Rights Agreement.  The
Company shall deliver to the Rights Agent for  cancellation and retirement,
and  the  Rights  Agent  shall  so  cancel  and  retire,  any  other  Right
Certificate  purchased or acquired by the Company  otherwise  than upon the
exercise  thereof.  The Rights  Agent  shall  deliver all  cancelled  Right
Certificates  to the  Company,  or shall,  at the  written  request  of the
                                    14
<PAGE>
Company, destroy such cancelled Right Certificates,  and in such case shall
deliver a certificate of destruction thereof to the Company.

     Section 9. AVAILABILITY OF PREFERRED SHARES. The Company covenants and
agrees  that it will cause to be  reserved  and kept  available  out of its
authorized and unissued  Preferred  Shares or any Preferred  Shares held in
its  treasury,  the number of Preferred  Shares that will be  sufficient to
permit the exercise in full of all  outstanding  Rights in accordance  with
Section 7. The  Company  covenants  and  agrees  that it will take all such
action as may be necessary to ensure that all  Preferred  Shares  delivered
upon exercise of Rights shall, at the time of delivery of the  certificates
for such Preferred  Shares (subject to payment of the Purchase  Price),  be
duly and  validly  authorized  and issued and fully paid and  nonassessable
shares.

     The Company further covenants and agrees that it will pay when due and
payable any and all federal and state  transfer taxes and charges which may
be payable in respect of the issuance or delivery of the Right Certificates
or of any Preferred  Shares upon the exercise of Rights.  The Company shall
not,  however,  be required to pay any transfer tax which may be payable in
respect of any transfer or delivery of Right Certificates to a person other
than, or the issuance or delivery of  certificates  or depositary  receipts
for the  Preferred  Shares in a name  other  than that of,  the  registered
holder of the Right Certificate  evidencing Rights surrendered for exercise
or to issue or to deliver  any  certificates  or  depositary  receipts  for
Preferred  Shares upon the  exercise of any Rights until any such tax shall
have been paid (any such tax  being  payable  by the  holder of such
                                    15
<PAGE>
Right  Certificate  at  the  time  of  surrender)  or  until  it  has  been
established to the Company's  reasonable  satisfaction  that no such tax is
due.

     Section 10.  PREFERRED  SHARES RECORD DATE.  Each person in whose name
any certificate for Preferred  Shares is issued upon the exercise of Rights
shall for all purposes be deemed to have become the holder of record of the
Preferred  Shares  represented  thereby on, and such  certificate  shall be
dated, the date upon which the Right Certificate evidencing such Rights was
duly  surrendered  and payment of the  Purchase  Price (and any  applicable
transfer  taxes)  was  made;  PROVIDED,  HOWEVER,  that if the date of such
surrender  and payment is a date upon which the Preferred  Shares  transfer
books of the Company are closed, such person shall be deemed to have become
the record holder of such shares on, and such  certificate  shall be dated,
the next  succeeding  Business Day on which the Preferred  Shares  transfer
books  of the  Company  are  open.  Prior  to the  exercise  of the  Rights
evidenced thereby,  the holder of a Right Certificate shall not be entitled
to any rights of a holder of Preferred Shares for which the Rights shall be
exercisable,  including,  without limitation, the right to vote, to receive
dividends or other  distributions or to exercise any preemptive rights, and
shall not be  entitled  to  receive  any notice of any  proceedings  of the
Company, except as provided herein.

     Section 11.  ADJUSTMENT OF PURCHASE PRICE,  NUMBER OF SHARES OR NUMBER
OF RIGHTS.  The Purchase Price,  the number of Preferred  Shares covered by
each Right and
                                    16
<PAGE>
the number of Rights  outstanding  are subject to  adjustment  from time to
time as provided in this Section 11.

     (a) (i) In the event the  Company  shall at any time after the date of
this  Agreement (A) declare a dividend on the Preferred  Shares  payable in
Preferred  Shares,  (B) subdivide the  outstanding  Preferred  Shares,  (C)
combine the outstanding Preferred Shares into a smaller number of Preferred
Shares or (D) issue any shares of its capital  stock in a  reclassification
of the Preferred Shares (including any such  reclassification in connection
with a  consolidation  or merger in which the Company is the  continuing or
surviving corporation), except as otherwise provided in this Section 11(a),
the  Purchase  Price  in  effect  at the time of the  record  date for such
dividend  or of the  effective  date of such  subdivision,  combination  or
reclassification,  and the  number  and kind of  shares  of  capital  stock
issuable on such date, shall be proportionately adjusted so that the holder
of any Right  exercised  after such time shall be  entitled  to receive the
aggregate  number and kind of shares of capital stock which,  if such Right
had been  exercised  immediately  prior to such date and at a time when the
Preferred  Shares  transfer  books of the Company were open,  he would have
owned upon such  exercise  and been  entitled  to receive by virtue of such
dividend, subdivision, combination or reclassification;  PROVIDED, HOWEVER,
that in no event shall the  consideration  to be paid upon the  exercise of
one Right be less than the  aggregate  par value of the  shares of  capital
stock of the Company issuable upon exercise of one Right.
                                    17
<PAGE>
     (ii) Subject to Section 24 of this Agreement,  in the event any Person
becomes an Acquiring Person, each holder of a Right shall thereafter have a
right  to  receive,  upon  exercise  thereof  at a price  equal to the then
current Purchase Price multiplied by the number of one  one-hundredths of a
Preferred Share for which a Right is then  exercisable,  in accordance with
the terms of this Agreement and in lieu of Preferred Shares, such number of
Common  Shares of the  Company as shall  equal the result  obtained  by (x)
multiplying  the  then  current   Purchase  Price  by  the  number  of  one
one-hundredths  of a Preferred Share for which a Right is then  exercisable
and  dividing  that product by (y) 50% of the then current per share market
price of the Company's Common Shares (determined  pursuant to Section 11(d)
hereof) on the date of the occurrence of such event.  In the event that any
Person  shall  become an  Acquiring  Person  and the  Rights  shall then be
outstanding, the Company shall not take any action which would eliminate or
diminish the benefits intended to be afforded by the Rights.

     From and after the  occurrence  of such event,  any Rights that are or
were  acquired  or  beneficially  owned  by any  Acquiring  Person  (or any
Associate  or  Affiliate of such  Acquiring  Person)  shall be void and any
holder of such  Rights  shall  thereafter  have no right to  exercise  such
Rights under any provision of this Agreement. No Right Certificate shall be
issued pursuant to Section 3 that represents Rights  beneficially  owned by
an Acquiring  Person whose Rights would be void  pursuant to
                                  18
<PAGE>
the  preceding  sentence or any  Associate or Affiliate  thereof;  no Right
Certificate  shall be issued at any time upon the transfer of any Rights to
an Acquiring  Person whose Rights would be void  pursuant to the  preceding
sentence or any  Associate or  Affiliate  thereof or to any nominee of such
Acquiring  Person,  Associate  or  Affiliate;  and  any  Right  Certificate
delivered to the Rights  Agent for  transfer to an  Acquiring  Person whose
Rights would be void pursuant to the preceding sentence shall be cancelled.

     (iii) In the event that there shall not be  sufficient  Common  Shares
issued  but not  outstanding  or  authorized  but  unissued  to permit  the
exercise  in  full  of  the  Rights  in   accordance   with  the  foregoing
subparagraph  (ii),  the  Company  shall  take  all such  action  as may be
necessary to authorize  additional Common Shares for issuance upon exercise
of the Rights. In the event the Company shall,  after good faith effort, be
unable  to take all such  action  as may be  necessary  to  authorize  such
additional  Common Shares,  the Company shall  substitute,  for each Common
Share that would  otherwise be issuable upon exercise of a Right,  a number
of  Preferred  Shares or fraction  thereof  such that the current per share
market price of one Preferred  Share  multiplied by such number or fraction
is equal to the current per share  market  price of one Common  Share as of
the date of issuance of such Preferred Shares or fraction thereof.

     (b) In case the Company  shall fix a record  date for the  issuance of
rights,  options or warrants to all holders of Preferred  Shares  entitling
them (for a period expiring within 45 calendar days after such record date)
to subscribe  for or purchase  Preferred  Shares (or shares having the same
rights,  privileges and  preferences as the Preferred  Shares  ("equivalent
preferred  shares")) or securities  convertible  into  Preferred  Shares or
equivalent  preferred  shares at a price per Preferred  Share or equivalent
preferred  share
                                    19
<PAGE>
(or having a conversion  price per share,  if a security  convertible  into
Preferred Shares or equivalent preferred shares) less than the then current
per share  market  price of the  Preferred  Shares  (as  defined in Section
11(d)) on such record date,  the Purchase  Price to be in effect after such
record date shall be determined by multiplying the Purchase Price in effect
immediately prior to such record date by a fraction, the numerator of which
shall be the number of  Preferred  Shares  outstanding  on such record date
plus the number of Preferred  Shares which the aggregate  offering price of
the total number of Preferred Shares and/or equivalent  preferred shares so
to be  offered  (and/or  the  aggregate  initial  conversion  price  of the
convertible  securities  so to be offered)  would  purchase at such current
market price and the  denominator of which shall be the number of Preferred
Shares  outstanding  on such  record  date plus the  number  of  additional
Preferred  Shares  and/or  equivalent  preferred  shares to be offered  for
subscription or purchase (or into which the convertible securities so to be
offered are initially  convertible);  PROVIDED,  HOWEVER,  that in no event
shall the  consideration  to be paid upon the exercise of one Right be less
than the  aggregate par value of the shares of capital stock of the Company
issuable upon exercise of one Right. In case such subscription price may be
paid in a consideration  part or all of which shall be in a form other than
cash, the value of such consideration  shall be as determined in good faith
by the Board of  Directors  of the Company,  whose  determination  shall be
described  in a statement  filed with the Rights  Agent.  Preferred  Shares
owned  by or held  for the  account  of the  Company  shall  not be  deemed
outstanding for the purpose of any such computation.  Such adjustment shall
be made successively whenever such a record date is fixed; and in the event
that such
                                    20
<PAGE>
rights,  options or warrants are not so issued, the Purchase Price shall be
adjusted  to be the  Purchase  Price  which would then be in effect if such
record date had not been fixed.

     (c) In case the  Company  shall fix a record  date for the making of a
distribution  to all holders of the Preferred  Shares  (including  any such
distribution made in connection with a consolidation or merger in which the
Company  is the  continuing  or  surviving  corporation)  of  evidences  of
indebtedness  or assets (other than a regular  quarterly cash dividend or a
dividend  payable in Preferred  Shares) or subscription  rights or warrants
(excluding  those referred to in Section 11(b) hereof),  the Purchase Price
to be in effect after such record date shall be determined  by  multiplying
the  Purchase  Price in effect  immediately  prior to such record date by a
fraction, the numerator of which shall be the then current per share market
price of the  Preferred  Shares on such record  date,  less the fair market
value  (as  determined  in good  faith  by the  Board of  Directors  of the
Company,  whose  determination shall be described in a statement filed with
the Rights Agent) of the portion of the assets or evidences of indebtedness
so to be distributed or of such subscription  rights or warrants applicable
to one Preferred  Share and the  denominator of which shall be such current
per share market price of the Preferred Shares; PROVIDED,  HOWEVER, that in
no event shall the  consideration to be paid upon the exercise of one Right
be less than the  aggregate par value of the shares of capital stock of the
Company to be issued upon exercise of one Right.  Such adjustments shall be
made  successively  whenever such a record date is fixed;  and in the event
that such 
                                    21
<PAGE>

distribution  is not so made, the Purchase Price shall again be adjusted to
be the Purchase Price which would then be in effect if such record date had
not been fixed.

     (d) (i) For the purpose of any computation hereunder, the "current per
share market price" of any security (a  "Security"  for the purpose of this
Section  11(d)(i))  on any date  shall be deemed to be the  average  of the
daily  closing  prices per share of such  Security  for the 30  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 Security is  determined  during a period  following the
announcement  by  the  issuer  of  such  Security  of  (A)  a  dividend  or
distribution  on such  Security  payable  in  shares  of such  Security  or
securities   convertible   into  such  shares,   or  (B)  any  subdivision,
combination  or   reclassification  of  such  Security  and  prior  to  the
expiration of 30 Trading Days after the ex-dividend  date for such dividend
or distribution,  or the record date for such  subdivision,  combination or
reclassification, then, and in each such case, the current per share market
price shall be  appropriately  adjusted to reflect the current market price
per share equivalent of such Security. The closing price for each day shall
be the last sale price,  regular  way, or, in case no such sale takes place
on such day, the average of the closing bid and asked prices,  regular way,
in  either  case as  reported  in the  principal  consolidated  transaction
reporting  system with respect to securities  listed or admitted to trading
on the New York  Stock  Exchange  or,  if the  Security  is not  listed  or
admitted  to trading on the New York Stock  Exchange,  as  reported  in the
principal  consolidated   transaction  reporting  system  with  respect  to
securities listed on the

                                    22
<PAGE>
principal national  securities  exchange on which the Security is listed or
admitted  to  trading  or, if the  Security  is not listed or  admitted  to
trading on any national securities  exchange,  the last quoted price or, if
not so  quoted,  the  average  of the high bid and low asked  prices in the
over-the-counter  market,  as  reported  by  the  National  Association  of
Securities  Dealers,  Inc.  Automated  Quotations System ("NASDAQ") or such
other  system  then in use,  or,  if on any such date the  Security  is not
quoted by any such  organization,  the average of the closing bid and asked
prices as furnished by a  professional  market maker making a market in the
Security  selected  by the  Board of  Directors  of the  Company.  The term
"Trading Day" shall mean a day on which the principal  national  securities
exchange on which the Security is listed or admitted to trading is open for
the  transaction  of business or, if the Security is not listed or admitted
to trading on any national securities exchange, a Business Day.

     (ii) For the purpose of any  computation  hereunder,  the "current per
share  market  price"  of the  Preferred  Shares  shall  be  determined  in
accordance with the method set forth in Section 11(d)(i).  If the Preferred
Shares are not publicly traded, the "current per share market price" of the
Preferred  Shares shall be conclusively  deemed to be the current per share
market  price of the  Common  Shares  as  determined  pursuant  to  Section
11(d)(i) (appropriately adjusted to reflect any stock split, stock dividend
or similar transaction occurring after the date hereof),  multiplied by one
hundred. If neither the Common Shares nor the Preferred Shares are publicly
held or so listed or traded,  "current per share  market  price" shall mean
the fair  value  per  share as  determined  in good  faith by

                                    23
<PAGE>
the  Board  of  Directors  of the  Company,  whose  determination  shall be
described in a statement filed with the Rights Agent.

     (e) No adjustment in the Purchase Price shall be required  unless such
adjustment  would  require an  increase  or  decrease of at least 1% in the
Purchase Price; PROVIDED,  HOWEVER, that any adjustments which by reason of
this Section 11(e) are not required to be made shall be carried forward and
taken into account in any subsequent  adjustment.  All  calculations  under
this  Section 11 shall be made to the  nearest  cent or to the  nearest one
one-millionth of a Preferred Share or one ten-thousandth of any other share
or security as the case may be.  Notwithstanding the first sentence of this
Section 11(e), any adjustment  required by this Section 11 shall be made no
later than the earlier of (i) three years from the date of the  transaction
which  requires such  adjustment or (ii) the date of the  expiration of the
right to exercise any Rights.

     (f) If as a result of an  adjustment  made  pursuant to Section  11(a)
hereof, the holder of any Right thereafter  exercised shall become entitled
to receive any shares of capital stock of the Company other than  Preferred
Shares,  thereafter  the number of such  other  shares so  receivable  upon
exercise of any Right shall be subject to adjustment from time to time in a
manner and on terms as nearly  equivalent as  practicable to the provisions
with respect to the  Preferred  Shares  contained in Section  11(a) through
(c), inclusive, and the provisions of Sections 7, 9, 10 and 13 with respect
to the Preferred Shares shall apply on like terms to any such other shares.
                                    24
<PAGE>
     (g) All Rights  originally  issued by the  Company  subsequent  to any
adjustment made to the Purchase Price hereunder shall evidence the right to
purchase,  at the adjusted Purchase Price, the number of one one-hundredths
of a Preferred Share  purchasable from time to time hereunder upon exercise
of the Rights, all subject to further adjustment as provided herein.

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

     (i) The  Company may elect on or after the date of any  adjustment  of
the Purchase Price to adjust the number of Rights,  in substitution for any
adjustment  in  the  number  of one  one-hundredths  of a  Preferred  Share
purchasable  upon the exercise of a Right.  Each of the Rights  outstanding
after such  adjustment of the number of Rights shall be exercisable for the
number of one  one-hundredths  of a  Preferred  Share for which a Right was
exercisable immediately prior to such adjustment. Each Right held of record
                                    25
<PAGE>
prior to such  adjustment  of the number of Rights shall become that number
of Rights  (calculated  to the  nearest  one  ten-thousandth)  obtained  by
dividing the Purchase  Price in effect  immediately  prior to adjustment of
the  Purchase  Price by the  Purchase  Price in  effect  immediately  after
adjustment  of  the  Purchase  Price.  The  Company  shall  make  a  public
announcement of its election to adjust the number of Rights, indicating the
record date for the  adjustment,  and, if known at the time,  the amount of
the  adjustment  to be made.  This record date may be the date on which the
Purchase  Price  is  adjusted  or any day  thereafter,  but,  if the  Right
Certificates  have been  issued,  shall be at least 10 days  later than the
date of the public  announcement.  If Right  Certificates have been issued,
upon each  adjustment  of the  number of Rights  pursuant  to this  Section
11(i),  the  Company  shall,  as  promptly  as  practicable,  cause  to  be
distributed to holders of record of Right  Certificates on such record date
Right Certificates evidencing, subject to Section 14 hereof, the additional
Rights  to which  such  holders  shall  be  entitled  as a  result  of such
adjustment, or, at the option of the Company, shall cause to be distributed
to such holders of record in  substitution  and  replacement  for the Right
Certificates held by such holders prior to the date of adjustment, and upon
surrender  thereof,  if required  by the  Company,  new Right  Certificates
evidencing  all the Rights to which such  holders  shall be entitled  after
such adjustment.  Right  Certificates so to be distributed shall be issued,
executed and  countersigned  in the manner provided for herein and shall be
registered in the names of the holders of record of Right  Certificates  on
the record date specified in the public announcement.
                                    26
<PAGE>
     (j)  Irrespective of any adjustment or change in the Purchase Price or
the number of one  one-hundredths  of a Preferred  Share  issuable upon the
exercise of the Rights, the Right  Certificates  theretofore and thereafter
issued may  continue  to express the  Purchase  Price and the number of one
one-hundredths  of a Preferred  Share which were  expressed  in the initial
Right Certificates issued hereunder.

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

     (l) In any  case in  which  this  Section  11  shall  require  that an
adjustment in the Purchase  Price be made effective as of a record date for
a specified  event,  the Company may elect to defer until the occurrence of
such  event the  issuing to the  holder of any Right  exercised  after such
record date of the  Preferred  Shares and other capital stock or securities
of the Company,  if any,  issuable  upon such  exercise  over and above the
Preferred  Shares and other capital stock or securities of the Company,  if
any,  issuable  upon such  exercise on the basis of the  Purchase  Price in
effect prior to such adjustment;  PROVIDED, HOWEVER, that the Company shall
deliver to such holder a due bill or other ap-
                                    27
<PAGE>
propriate  instrument  evidencing  such  holder's  right  to  receive  such
additional   shares  upon  the  occurrence  of  the  event  requiring  such
adjustment.

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

     (n) In the event that at any time after the date of this Agreement and
prior to the  Distribution  Date,  the Company shall (i) declare or pay any
dividend  on the Common  Shares  payable in Common  Shares or (ii) effect a
subdivision,   combination  or  consolidation  of  the  Common  Shares  (by
reclassification  or  otherwise  than by  payment  of  dividends  in Common
Shares) into a greater or lesser number of Common Shares,  then in any such
case (A) the number of one  one-hundredths of a Preferred Share purchasable
after such event upon proper  exercise of each Right shall be determined by
multiplying  the  number  of one  one-hundredths  of a  Preferred  Share so
purchasable immediately prior to such event by a fraction, the numerator of
which is the number
                                    28
<PAGE>
of  Common  Shares  outstanding  immediately  before  such  event  and  the
denominator of which is the number of Common Shares outstanding immediately
after such event, and (B) each Common Share  outstanding  immediately after
such event shall have issued with respect to it that number of Rights which
each Common Share  outstanding  immediately  prior to such event had issued
with respect to it. The  adjustments  provided  for in this  Section  11(n)
shall be made successively  whenever such a dividend is declared or paid or
such a subdivision, combination or consolidation is effected.

     Section  12.  CERTIFICATE  OF  ADJUSTED  PURCHASE  PRICE OR  NUMBER OF
SHARES.  Whenever  an  adjustment  is made as  provided in Section 11 or 13
hereof, the Company shall promptly (a) prepare a certificate  setting forth
such  adjustment,  and a brief  statement of the facts  accounting for such
adjustment, (b) file with the Rights Agent and with each transfer agent for
the Common Shares or the Preferred  Shares a copy of such  certificate  and
(c) mail a brief summary  thereof to each holder of a Right  Certificate in
accordance with Section 25 hereof.

     Section  13.  CONSOLIDATION,  MERGER OR SALE OR  TRANSFER OF ASSETS OR
EARNING POWER.  In the event,  directly or indirectly,  at any time after a
Person has become an Acquiring  Person,  (a) the Company shall  consolidate
with,  or merge  with and into,  any other  Person,  (b) any  Person  shall
consolidate  with the  Company,  or merge with and into the Company and the
Company  shall be the  continuing or surviving  corporation  of such merger
and, in connection with such merger, all or part of the Common Shares shall
be changed into or  exchanged  for stock or other  securities  of any other
Person (or the
                                    29
<PAGE>

Company) or cash or any other  property,  or (c) the Company  shall sell or
otherwise  transfer  (or  one or  more of its  Subsidiaries  shall  sell or
otherwise transfer),  in one or more transactions,  assets or earning power
aggregating  50% or more of the assets or earning  power of the Company and
its  Subsidiaries  (taken as a whole) to any other  Person  other  than the
Company or one or more of its wholly-owned Subsidiaries,  then, and in each
such  case,  proper  provision  shall be made so that (i) each  holder of a
Right (except as otherwise provided herein) shall thereafter have the right
to receive,  upon the exercise thereof at a price equal to the then current
Purchase  Price  multiplied  by  the  number  of  one  one-hundredths  of a
Preferred Share for which a Right is then  exercisable,  in accordance with
the terms of this Agreement and in lieu of Preferred Shares, such number of
Common  Shares of such other  Person  (including  the Company as  successor
thereto or as the surviving corporation) as shall equal the result obtained
by (A)  multiplying  the then current  Purchase  Price by the number of one
one-hundredths  of a Preferred Share for which a Right is then  exercisable
and  dividing  that product by (B) 50% of the then current per share market
price of the Common  Shares of such other  Person  (determined  pursuant to
Section 11(d) hereof) on the date of  consummation  of such  consolidation,
merger,  sale or  transfer;  (ii) the issuer of such  Common  Shares  shall
thereafter   be  liable  for,   and  shall   assume,   by  virtue  of  such
consolidation,  merger, sale or transfer, all the obligations and duties of
the Company  pursuant to this  Agreement;  (iii) the term  "Company"  shall
thereafter  be deemed to refer to such  issuer;  and (iv) such issuer shall
take such  steps  (including,  but not  limited  to, the  reservation  of a
sufficient number of its Common Shares in accordance with Section 9 hereof)
in connection with such
                                    30
<PAGE>
consummation as may be necessary to assure that the provisions hereof shall
thereafter be  applicable,  as nearly as reasonably  may be, in relation to
the Common Shares  thereafter  deliverable upon the exercise of the Rights.
The Company shall not consummate any such  consolidation,  merger,  sale or
transfer  unless  prior  thereto the  Company  and such  issuer  shall have
executed  and  delivered to the Rights  Agent a  supplemental  agreement so
providing.  The Company  shall not enter into any  transaction  of the kind
referred to in this Section 13 if at the time of such transaction there are
any  rights,  warrants,   instruments  or  securities  outstanding  or  any
agreements or arrangements  which, as a result of the  consummation of such
transaction,   would  eliminate  or  substantially  diminish  the  benefits
intended to be afforded by the Rights.  The  provisions  of this Section 13
shall similarly apply to successive  mergers or  consolidations or sales or
other transfers.

     Section 14. FRACTIONAL RIGHTS AND FRACTIONAL  SHARES.  (a) The Company
shall not be required to issue  fractions of Rights or to distribute  Right
Certificates  which evidence  fractional Rights. In lieu of such fractional
Rights,  there  shall  be  paid  to the  registered  holders  of the  Right
Certificates with regard to which such fractional Rights would otherwise be
issuable,  an  amount in cash  equal to the same  fraction  of the  current
market value of a whole Right.  For the purposes of this Section 14(a), the
current  market  value of a whole Right  shall be the closing  price of the
Rights  for the  Trading  Day  immediately  prior to the date on which such
fractional Rights would have been otherwise issuable. The closing price for
any day shall be the last sale price, regular way, or, in
                                    31
<PAGE>
case no such sale takes  place on such day,  the average of the closing bid
and asked prices,  regular way, in either case as reported in the principal
consolidated transaction reporting system with respect to securities listed
or admitted to trading on the New York Stock Exchange or, if the Rights are
not  listed or  admitted  to trading  on the New York  Stock  Exchange,  as
reported in the principal  consolidated  transaction  reporting system with
respect to securities listed on the principal national  securities exchange
on which the Rights are listed or admitted to trading or, if the Rights are
not listed or admitted to trading on any national securities exchange,  the
last quoted price or, if not so quoted, the average of the high bid and low
asked prices in the over-the-counter  market, as reported by NASDAQ or such
other  system then in use or, if on any such date the Rights are not quoted
by any such  organization,  the average of the closing bid and asked prices
as furnished by a  professional  market maker making a market in the Rights
selected by the Board of Directors  of the Company.  If on any such date no
such market  maker is making a market in the Rights,  the fair value of the
Rights on such date as  determined  in good faith by the Board of Directors
of the Company shall be used.

     (b) The Company shall not be required to issue  fractions of Preferred
Shares  (other  than  fractions   which  are  integral   multiples  of  one
one-hundredth  of a  Preferred  Share)  upon  exercise  of the Rights or to
distribute  certificates which evidence fractional  Preferred Shares (other
than  fractions  which are  integral  multiples of one  one-hundredth  of a
Preferred  Share).  Fractions of Preferred Shares in integral  multiples of
one one-hundredth of a Preferred Share may, at the election of the Company,
be
                                    32
<PAGE>
evidenced by  depositary  receipts,  pursuant to an  appropriate  agreement
between the Company and a depositary  selected by it;  provided,  that such
agreement shall provide that the holders of such depositary  receipts shall
have all the rights,  privileges and preferences to which they are entitled
as beneficial owners of the Preferred Shares represented by such depositary
receipts.  In lieu of  fractional  Preferred  Shares that are not  integral
multiples of one  one-hundredth of a Preferred Share, the Company shall pay
to the registered holders of Right Certificates at the time such Rights are
exercised as herein  provided an amount in cash equal to the same  fraction
of the current  market value of one  Preferred  Share.  For the purposes of
this Section 14(b),  the current market value of a Preferred Share shall be
the  closing  price of a  Preferred  Share (as  determined  pursuant to the
second sentence of Section 11(d)(i) hereof) for the Trading Day immediately
prior to the date of such exercise.

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

     Section 15. RIGHTS OF ACTION.  All rights of action in respect of this
Agreement,  excepting  the rights of action given to the Rights Agent under
Section 18 hereof,  are vested in the respective  registered holders of the
Right  Certificates  (and, prior to the  Distribution  Date, the registered
holders  of the  Common  Shares);  and any  registered  holder of any Right
Certificate  (or, prior to the  Distribution  Date, of the Common  Shares),
without the consent of the Rights Agent or of the holder of any other Right
                                    33
<PAGE>
Certificate  (or, prior to the  Distribution  Date, of the Common  Shares),
may, in his own behalf and for his own benefit,  enforce, and may institute
and maintain any suit, action or proceeding against the Company to enforce,
or otherwise act in respect of, his right to exercise the Rights  evidenced
by such Right  Certificate in the manner provided in such Right Certificate
and in this  Agreement.  Without  limiting  the  foregoing  or any remedies
available to the holders of Rights,  it is specifically  acknowledged  that
the  holders  of Rights  would not have an  adequate  remedy at law for any
breach of this  Agreement and will be entitled to specific  performance  of
the obligations  under, and injunctive  relief against actual or threatened
violations of the obligations of any Person subject to, this Agreement.

     Section 16.  AGREEMENT OF RIGHT HOLDERS.  Every holder of a Right,  by
accepting  the same,  consents  and agrees  with the Company and the Rights
Agent and with every other holder of a Right that:

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

     (b)  after  the   Distribution   Date,  the  Right   Certificates  are
transferable  only on the registry books of the Rights Agent if surrendered
at the principal  office of the Rights Agent,  duly endorsed or accompanied
by a proper instrument of transfer; and

     (c) the Company and the Rights  Agent may deem and treat the person in
whose name the Right  Certificate (or, prior to the Distribution  Date, the
associated
                                    34
<PAGE>
Common Shares  certificate) is registered as the absolute owner thereof and
of the Rights evidenced thereby (notwithstanding any notations of ownership
or  writing  on the Right  Certificates  or the  associated  Common  Shares
certificate  made by anyone other than the Company or the Rights Agent) for
all purposes whatsoever, and neither the Company nor the Rights Agent shall
be affected by any notice to the contrary.

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

     Section 18.  CONCERNING THE RIGHTS AGENT. The Company agrees to pay to
the Rights Agent reasonable  compensation  for all services  rendered by it
hereunder  and,  from  time to time,  on demand of the  Rights  Agent,  its
reasonable  expenses and counsel fees and other  disbursements  incurred in
the  administration  and  execution of this  Agree-
                                   35
<PAGE>
ment and the exercise and performance of its duties hereunder.  The Company
also  agrees to  indemnify  the Rights  Agent for,  and to hold it harmless
against, any loss, liability, or expense, incurred without negligence,  bad
faith or willful  misconduct on the part of the Rights Agent,  for anything
done or omitted by the Rights Agent in connection  with the  acceptance and
administration  of this  Agreement,  including  the costs and  expenses  of
defending against any claim of liability in the premises.

     The Rights Agent shall be protected and shall incur no liability  for,
or in respect of any action taken,  suffered or omitted by it in connection
with,  its  administration  of this  Agreement  in reliance  upon any Right
Certificate or certificate for the Preferred Shares or Common Shares or for
other  securities  of the Company,  instrument  of  assignment or transfer,
power of  attorney,  endorsement,  affidavit,  letter,  notice,  direction,
consent, certificate,  statement, or other paper or document believed by it
to be genuine and to be signed, executed and, where necessary,  verified or
acknowledged, by the proper person or persons, or otherwise upon the advice
of counsel as set forth in Section 20 hereof.

     Section 19. MERGER OR CONSOLIDATION OR CHANGE OF NAME OF RIGHTS AGENT.
Any corporation  into which the Rights Agent or any successor  Rights Agent
may be  merged or with  which it may be  consolidated,  or any  corporation
resulting from any merger or consolidation to which the Rights Agent or any
successor  Rights Agent shall be a party, or any corporation  succeeding to
the stock  transfer or  corporate  trust  powers of the Rights Agent or any
successor  Rights  Agent,  shall be the successor to the Rights
                                    36
<PAGE>
Agent under this Agreement  without the execution or filing of any paper or
any further act on the part of any of the parties  hereto;  PROVIDED,  that
such  corporation  would be eligible for appointment as a successor  Rights
Agent under the  provisions of Section 21 hereof.  In case at the time such
successor  Rights  Agent  shall  succeed  to the  agency  created  by  this
Agreement,  any of the Right Certificates shall have been countersigned but
not   delivered,   any  such   successor   Rights   Agent   may  adopt  the
countersignature  of the  predecessor  Rights  Agent and deliver such Right
Certificates  so  countersigned;  and in case at that time any of the Right
Certificates shall not have been countersigned,  any successor Rights Agent
may  countersign  such  Right  Certificates  either  in  the  name  of  the
predecessor  Rights Agent or in the name of the successor Rights Agent; and
in all such  cases  such  Right  Certificates  shall  have  the full  force
provided in the Right Certificates and in this Agreement.

     In case at any time the name of the Rights  Agent shall be changed and
at such time any of the Right  Certificates  shall have been  countersigned
but not delivered,  the Rights Agent may adopt the  countersignature  under
its prior name and deliver Right Certificates so countersigned; and in case
at  that  time  any  of  the  Right   Certificates   shall  not  have  been
countersigned,  the Rights Agent may  countersign  such Right  Certificates
either in its prior name or in its changed name; and in all such cases such
Right  Certificates  shall  have  the  full  force  provided  in the  Right
Certificates and in this Agreement.
                                    37
<PAGE>
     Section 20. DUTIES OF RIGHTS AGENT.  The Rights Agent  undertakes  the
duties and  obligations  imposed by this Agreement upon the following terms
and  conditions,  by all of which  the  Company  and the  holders  of Right
Certificates, by their acceptance thereof, shall be bound:

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

     (b) Whenever in the performance of its duties under this Agreement the
Rights Agent shall deem it  necessary or desirable  that any fact or matter
be proved or  established  by the Company  prior to taking or suffering any
action  hereunder,  such fact or matter  (unless other  evidence in respect
thereof be herein specifically prescribed) may be deemed to be conclusively
proved and  established by a certificate  signed by any one of the Chairman
of the  Board,  the  Chief  Executive  Officer,  the  President,  any  Vice
President,  the  Treasurer or the Secretary of the Company and delivered to
the Rights Agent; and such certificate  shall be full  authorization to the
Rights Agent for any action taken or suffered in good faith by it under the
provisions of this Agreement in reliance upon such certificate.

     (c) The Rights Agent shall be liable  hereunder to the Company and any
other Person only for its own negligence, bad faith or willful misconduct.
                                    38
<PAGE>
     (d) The  Rights  Agent  shall not be liable for or by reason of any of
the  statements of fact or recitals  contained in this  Agreement or in the
Right Certificates (except its countersignature  thereof) or be required to
verify the same,  but all such  statements  and  recitals  are and shall be
deemed to have been made by the Company only.

     (e) The Rights Agent shall not be under any  responsibility in respect
of the validity of this  Agreement  or the  execution  and delivery  hereof
(except the due execution  hereof by the Rights Agent) or in respect of the
validity or execution of any Right Certificate (except its countersignature
thereof);  nor shall it be responsible for any breach by the Company of any
covenant  or  condition  contained  in  this  Agreement  or  in  any  Right
Certificate;   nor  shall  it  be   responsible   for  any  change  in  the
exercisability  of the Rights  (including the Rights becoming void pursuant
to Section  11(a)(ii)  hereof) or any adjustment in the terms of the Rights
(including the manner, method or amount thereof) provided for in Section 3,
11, 13, 23 or 24, or the  ascertaining of the existence of facts that would
require any such change or adjustment  (except with respect to the exercise
of Rights  evidenced by Right  Certificates  after actual  notice that such
change or  adjustment  is  required);  nor shall it by any act hereunder be
deemed to make any  representation  or warranty as to the  authorization or
reservation of any Preferred Shares to be issued pursuant to this Agreement
or any Right  Certificate or as to whether any Preferred  Shares will, when
issued, be validly authorized and issued, fully paid and nonassessable.
                                    39
<PAGE>
     (f) The Company agrees that it will perform, execute,  acknowledge and
deliver or cause to be performed, executed,  acknowledged and delivered all
such further and other acts,  instruments  and assurances as may reasonably
be required by the Rights Agent for the carrying out or  performing  by the
Rights Agent of the provisions of this Agreement.

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

     (h)  The  Rights  Agent  and any  stockholder,  director,  officer  or
employee of the Rights Agent may buy,  sell or deal in any of the Rights or
other  securities  of the Company or become  pecuniarily  interested in any
transaction  in which the Company may be  interested,  or contract  with or
lend money to the Company or otherwise act as fully and freely as though it
were not Rights Agent under this  Agreement.  Nothing herein shall preclude
the Rights  Agent from acting in any other  capacity for the Company or for
any other legal entity.
                                    40
<PAGE>
     (i) The Rights  Agent may  execute and  exercise  any of the rights or
powers hereby vested in it or perform any duty  hereunder  either itself or
by or through its  attorneys  or agents,  and the Rights Agent shall not be
answerable or accountable  for any act,  default,  neglect or misconduct of
any such attorneys or agents or for any loss to the Company  resulting from
any such act, default, neglect or misconduct,  provided reasonable care was
exercised in the selection and continued employment thereof.

     Section 21. CHANGE OF RIGHTS AGENT.  The Rights Agent or any successor
Rights  Agent may  resign  and be  discharged  from its  duties  under this
Agreement upon 30 days' notice in writing mailed to the Company and to each
transfer  agent of the Common  Shares or Preferred  Shares by registered or
certified mail, and to the holders of the Right Certificates by first-class
mail. The Company may remove the Rights Agent or any successor Rights Agent
upon 30 days'  notice in writing,  mailed to the Rights  Agent or successor
Rights Agent,  as the case may be, and to each transfer agent of the Common
Shares or Preferred  Shares by  registered  or certified  mail,  and to the
holders of the Right  Certificates by first-class mail. If the Rights Agent
shall resign or be removed or shall otherwise  become  incapable of acting,
the Company shall  appoint a successor to the Rights Agent.  If the Company
shall fail to make such appointment within a period of 30 days after giving
notice of such  removal  or after it has been  notified  in writing of such
resignation or incapacity by the resigning or incapacitated Rights Agent or
by the holder of a Right Certificate (who shall,  with such notice,  submit
his Right  Certificate for inspection by the Company),  then the registered
holder  of any  Right  Certificate  may  apply
                                    41
<PAGE>
to any court of competent  jurisdiction for the appointment of a new Rights
Agent. Any successor Rights Agent,  whether  appointed by the Company or by
such a court, shall be a corporation organized and doing business under the
laws of the  United  States  or of the  State of New York (or of any  other
state of the United States so long as such  corporation is authorized to do
business  as a  banking  institution  in the  State of New  York),  in good
standing,  having an office in the State of New York,  which is  authorized
under such laws to exercise corporate trust or stock transfer powers and is
subject to supervision  or  examination  by federal or state  authority and
which has at the time of its appointment as Rights Agent a combined capital
and  surplus of at least $50  million.  After  appointment,  the  successor
Rights  Agent  shall be vested  with the same  powers,  rights,  duties and
responsibilities as if it had been originally named as Rights Agent without
further act or deed;  but the  predecessor  Rights Agent shall  deliver and
transfer to the successor  Rights Agent any property at the time held by it
hereunder, and execute and deliver any further assurance,  conveyance,  act
or deed necessary for the purpose. Not later than the effective date of any
such  appointment the Company shall file notice thereof in writing with the
predecessor  Rights Agent and each  transfer  agent of the Common Shares or
Preferred  Shares,  and mail a notice  thereof in writing to the registered
holders of the Right Certificates.  Failure to give any notice provided for
in this Section 21, however,  or any defect  therein,  shall not affect the
legality or validity of the  resignation  or removal of the Rights Agent or
the appointment of the successor Rights Agent, as the case may be.
                                    42
<PAGE>
     Section 22. ISSUANCE OF NEW RIGHT CERTIFICATES. Notwithstanding any of
the  provisions  of this  Agreement or of the Rights to the  contrary,  the
Company may, at its option, issue new Right Certificates  evidencing Rights
in such form as may be  approved by its Board of  Directors  to reflect any
adjustment or change in the Purchase  Price and the number or kind or class
of shares  or other  securities  or  property  purchasable  under the Right
Certificates made in accordance with the provisions of this Agreement.

     Section 23. REDEMPTION. (a) The Board of Directors of the Company may,
at its  option,  at any time  prior to such time as any  Person  becomes an
Acquiring  Person,  redeem  all but not less than all the then  outstanding
Rights at a redemption price of $.01 per Right,  appropriately  adjusted to
reflect any stock split,  stock dividend or similar  transaction  occurring
after the date hereof (such redemption price being hereinafter  referred to
as the  "Redemption  Price").  The redemption of the Rights by the Board of
Directors  may be made  effective at such time, on such basis and with such
conditions as the Board of Directors in its sole discretion may establish.

     (b)  Immediately  upon the  action  of the Board of  Directors  of the
Company  ordering the redemption of the Rights pursuant to paragraph (a) of
this Section 23, and without any further action and without any notice, the
right to exercise the Rights will  terminate and the only right  thereafter
of the holders of Rights  shall be to receive  the  Redemption  Price.  The
Company shall promptly give public notice of any such redemption; PROVIDED,
HOWEVER,  that the failure to give, or any defect in, any such notice shall
not  affect  the  validity  of such  redemption.  Within 10 days after such
action of the
                                    43
<PAGE>
Board of Directors ordering the redemption of the Rights, the Company shall
mail a notice of  redemption  to all the  holders  of the then  outstanding
Rights at their last  addresses as they appear upon the  registry  books of
the Rights Agent or, prior to the Distribution  Date, on the registry books
of the transfer agent for the Common Shares.  Any notice which is mailed in
the manner herein provided shall be deemed given, whether or not the holder
receives the notice.  Each such notice of redemption  will state the method
by which the  payment of the  Redemption  Price will be made.  Neither  the
Company nor any of its  Affiliates  or  Associates  may redeem,  acquire or
purchase  for value any  Rights at any time in any  manner  other than that
specifically  set forth in this  Section 23 or in  Section  24 hereof,  and
other than in  connection  with the purchase of Common  Shares prior to the
Distribution Date.

     Section 24.  EXCHANGE.  (a) The Board of Directors of the Company may,
at its option,  at any time after any Person  becomes an Acquiring  Person,
exchange all or part of the then outstanding and exercisable  Rights (which
shall not include  Rights that have become void pursuant to the  provisions
of Section  11(a)(ii) hereof) for Common Shares at an exchange ratio of one
Common Share per Right,  appropriately adjusted to reflect any stock split,
stock dividend or similar transaction occurring after the date hereof (such
exchange  ratio being  hereinafter  referred to as the  "Exchange  Ratio").
Notwithstanding  the  foregoing,  the  Board  of  Directors  shall  not  be
empowered to effect such  exchange at any time after any Person (other than
the Company,  any Subsidiary of the Company,  any employee  benefit plan of
the Company or any such Subsidiary, or any
                                    44
<PAGE>
entity  holding  Common  Shares  for or  pursuant  to the terms of any such
plan), together with all Affiliates and Associates of such Person,  becomes
the Beneficial Owner of 50% or more of the Common Shares then outstanding.

     (b)  Immediately  upon the  action  of the Board of  Directors  of the
Company  ordering the exchange of any Rights  pursuant to paragraph  (a) of
this Section 24 and without any further action and without any notice,  the
right to exercise such Rights shall terminate and the only right thereafter
of a holder of such Rights shall be to receive that number of Common Shares
equal to the number of such Rights held by such  holder  multiplied  by the
Exchange  Ratio.  The Company shall promptly give public notice of any such
exchange;  PROVIDED,  HOWEVER,  that the failure to give, or any defect in,
such notice  shall not affect the  validity of such  exchange.  The Company
promptly  shall mail a notice of any such exchange to all of the holders of
such Rights at their last  addresses as they appear upon the registry books
of the  Rights  Agent.  Any  notice  which is mailed in the  manner  herein
provided  shall be deemed  given,  whether or not the holder  receives  the
notice.  Each such  notice of  exchange  will state the method by which the
exchange of the Common Shares for Rights will be effected and, in the event
of any partial exchange, the number of Rights which will be exchanged.  Any
partial  exchange  shall be effected pro rata based on the number of Rights
(other than Rights  which have become void  pursuant to the  provisions  of
Section 11(a)(ii) hereof) held by each holder of Rights.
                                    45
<PAGE>
     (c) In the event  that there  shall not be  sufficient  Common  Shares
issued  but not  outstanding  or  authorized  but  unissued  to permit  any
exchange of Rights as  contemplated in accordance with this Section 24, the
Company  shall  take all  such  action  as may be  necessary  to  authorize
additional  Common Shares for issuance upon exchange of the Rights.  In the
event the Company  shall,  after good faith  effort,  be unable to take all
such action as may be necessary to authorize such additional Common Shares,
the Company shall substitute, for each Common Share that would otherwise be
issuable upon exchange of a Right, a number of Preferred Shares or fraction
thereof such that the current per share market price of one Preferred Share
multiplied  by such  number or  fraction  is equal to the current per share
market  price  of one  Common  Share  as of the  date of  issuance  of such
Preferred Shares or fraction thereof.

     (d) The Company  shall not be required  to issue  fractions  of Common
Shares or to  distribute  certificates  which  evidence  fractional  Common
Shares. In lieu of such fractional Common Shares,  the Company shall pay to
the registered  holders of the Right Certificates with regard to which such
fractional  Common  Shares  would  otherwise  be issuable an amount in cash
equal to the same  fraction of the current  market  value of a whole Common
Share.  For the purposes of this paragraph (d), the current market value of
a whole  Common  Share  shall be the  closing  price of a Common  Share (as
determined  pursuant to the second sentence of Section 11(d)(i) hereof) for
the Trading Day immediately  prior to the date of exchange pursuant to this
Section 24.
                                    46
<PAGE>
     Section 25.  NOTICE OF CERTAIN  EVENTS.  (a) In case the Company shall
propose  (i) to pay any  dividend  payable  in  stock  of any  class to the
holders of its Preferred  Shares or to make any other  distribution  to the
holders  of its  Preferred  Shares  (other  than a regular  quarterly  cash
dividend),  (ii) to offer to the holders of its Preferred  Shares rights or
warrants to subscribe for or to purchase any additional Preferred Shares or
shares of stock of any class or any other  securities,  rights or  options,
(iii) to effect any  reclassification of its Preferred Shares (other than a
reclassification  involving only the  subdivision of outstanding  Preferred
Shares),  (iv) to effect any  consolidation  or merger into or with,  or to
effect  any  sale  or  other  transfer  (or to  permit  one or  more of its
Subsidiaries  to  effect  any  sale  or  other  transfer),  in one or  more
transactions,  of 50% or more of the assets or earning power of the Company
and its Subsidiaries (taken as a whole) to, any other Person, (v) to effect
the  liquidation,  dissolution  or  winding up of the  Company,  or (vi) to
declare or pay any dividend on the Common  Shares  payable in Common Shares
or to effect a  subdivision,  combination  or  consolidation  of the Common
Shares (by  reclassification  or otherwise  than by payment of dividends in
Common  Shares),  then,  in each such case,  the Company shall give to each
holder of a Right  Certificate,  in  accordance  with Section 26 hereof,  a
notice of such proposed action, which shall specify the record date for the
purposes of such stock dividend,  or distribution of rights or warrants, or
the date on  which  such  reclassification,  consolidation,  merger,  sale,
transfer, liquidation,  dissolution, or winding up is to take place and the
date of  participation  therein by the holders of the Common  Shares and/or
Preferred Shares, if any such date is to be fixed, and such notice shall be
so given in the case of any  action
                                    47
<PAGE>
covered  by clause  (i) or (ii)  above at least 10 days prior to the record
date for determining  holders of the Preferred  Shares for purposes of such
action, and in the case of any such other action, at least 10 days prior to
the date of the taking of such proposed action or the date of participation
therein by the  holders  of the  Common  Shares  and/or  Preferred  Shares,
whichever shall be the earlier.

     (b) In case the event  set forth in  Section  11(a)(ii)  hereof  shall
occur,  then the Company shall as soon as  practicable  thereafter  give to
each holder of a Right Certificate, in accordance with Section 26 hereof, a
notice of the  occurrence of such event,  which notice shall  describe such
event and the consequences of such event to holders of Rights under Section
11(a)(ii) hereof.

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

                           Thiokol Corporation
                           2475 Washington Boulevard
                           Ogden, Utah  84401
                           Attention:  Corporate Secretary


Subject  to the  provisions  of  Section  21  hereof,  any notice or demand
authorized  by this  Agreement to be given or made by the Company or by the
holder  of  any  Right  Certificate  to or on the  Rights  Agent  shall  be
sufficiently  given or made if sent by first-class  mail,

                                    48
<PAGE>
postage prepaid,  addressed (until another address is filed in writing with
the Company) as follows:

                           First Chicago Trust Company of New York
                           525 Washington Boulevard
                           Suite 4660
                           Jersey City, New Jersey  07310
                           Attention:  Tenders and Exchanges Administration


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

     Section 27.  SUPPLEMENTS AND AMENDMENTS.  The Company may from time to
time supplement or amend this Agreement without the approval of any holders
of  Right  Certificates  in  order to cure any  ambiguity,  to  correct  or
supplement  any  provision  contained  herein  which  may be  defective  or
inconsistent  with  any  other  provisions  herein,  or to make  any  other
provisions  with respect to the Rights which the Company may deem necessary
or desirable, any such supplement or amendment to be evidenced by a writing
signed by the Company and the Rights Agent;  PROVIDED,  HOWEVER,  that from
and  after  such time as any  Person  becomes  an  Acquiring  Person,  this
Agreement shall not be amended in any manner which would  adversely  affect
the interests of the holders of Rights. Without limiting the foregoing, the
Company  may at any  time  prior  to such  time as any  Person  becomes  an
Acquiring  Person amend this Agreement to lower the thresholds

                                    49
<PAGE>
set forth in Sections 1(a) and 3(a) to not less than the greater of (i) the
sum of .001% and the largest  percentage of the  outstanding  Common Shares
then known by the  Company to be  beneficially  owned by any Person  (other
than the Company,  any Subsidiary of the Company, any employee benefit plan
of the Company or any  Subsidiary  of the  Company,  or any entity  holding
Common Shares for or pursuant to the terms of any such plan) and (ii) 10%.

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

     Section 29.  BENEFITS  OF THIS  AGREEMENT.  Nothing in this  Agreement
shall be  construed  to give to any  person or  corporation  other than the
Company,  the  Rights  Agent  and  the  registered  holders  of  the  Right
Certificates  (and, prior to the Distribution  Date, the Common Shares) any
legal or equitable  right,  remedy or claim under this Agreement;  but this
Agreement shall be for the sole and exclusive  benefit of the Company,  the
Rights Agent and the  registered  holders of the Right  Certificates  (and,
prior to the Distribution Date, the Common Shares).

     Section  30.  SEVERABILITY.   If  any  term,  provision,  covenant  or
restriction of this Agreement is held by a court of competent  jurisdiction
or other authority to be invalid,  void or unenforceable,  the remainder of
the terms,  provisions,  covenants and restrictions
                                    50
<PAGE>
of this Agreement shall remain in full force and effect and shall in no way
be affected, impaired or invalidated.

     Section 31.  GOVERNING LAW. This Agreement and each Right  Certificate
issued  hereunder  shall be deemed to be a contract  made under the laws of
the  State  of  Delaware  and for all  purposes  shall be  governed  by and
construed in accordance with the laws of such State applicable to contracts
to be made and performed entirely within such State.

     Section 32. COUNTERPARTS. This Agreement may be executed in any number
of  counterparts  and each of such  counterparts  shall for all purposes be
deemed  to be  an  original,  and  all  such  counterparts  shall  together
constitute but one and the same instrument.

     Section 33. DESCRIPTIVE HEADINGS.  Descriptive headings of the several
Sections of this Agreement are inserted for convenience  only and shall not
control or affect  the  meaning or  construction  of any of the  provisions
hereof.
                                    51
<PAGE>
    




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


Attest:                                     THIOKOL CORPORATION


     /S/ Edwin M. North                           /s/ James R. Wilson
By_________________________________         By______________________________
  Title: Corporate Secretary                  Title: Chairman, President &
                                                     Chief Executive Officer



Attest:                                      FIRST CHICAGO TRUST COMPANY
                                              OF NEW YORK



   /s/ M. Phalen                                  /s/ L. A. Woods
By_________________________________           By______________________________
  Title:  Vice President                      Title:  Vice President






                                    52
<PAGE>


                                                                   Exhibit A
                                                                   ---------
                         Form of Right Certificate


Certificate No. R-                                                ____Rights


     NOT  EXERCISABLE  AFTER  MAY 30,  2007 OR  EARLIER  IF  REDEMPTION  OR
     EXCHANGE  OCCURS.  THE RIGHTS ARE  SUBJECT TO  REDEMPTION  AT $.01 PER
     RIGHT AND TO EXCHANGE ON THE TERMS SET FORTH IN THE RIGHTS AGREEMENT.

                             Right Certificate

                            THIOKOL CORPORATION

     This  certifies  that_____________  , or  registered  assigns,  is the
registered  owner of the  number of Rights set forth  above,  each of which
entitles the owner thereof, subject to the terms, provisions and conditions
of the Rights Agreement, dated as of May 22, 1997 (the "Rights Agreement"),
between Thiokol Corporation,  a Delaware  corporation (the "Company"),  and
First Chicago Trust Company of New York (the "Rights  Agent"),  to purchase
from the Company at any time after the  Distribution  Date (as such term is
defined in the  Rights  Agreement)  and prior to 5:00  P.M.,  New York City
time,  on May 30, 2007 at the principal  office of the Rights Agent,  or at
the office of its successor as Rights Agent,  one  one-hundredth of a fully
paid non-assessable share of Series A Junior Participating Preferred Stock,
par value $1.00 per share (the "Preferred  Shares"),  of the Company,  at a
purchase  price of $240 per one  one-hundredth  of a  Preferred  Share (the
"Purchase   Price"),   upon   presentation  and  surrender  of  this  Right
Certificate with the Form of Election to Purchase duly executed. The number
of  Rights  evidenced  by this  Right  Certificate  (and the  number of one
one-hundredths  of a Preferred  Share which may be purchased  upon exercise
hereof) set forth above,  and the Purchase  Price set forth above,  are the
number  and  Purchase  Price as  of________  ,___ , based on the  Preferred
Shares as  constituted  at such date. As provided in the Rights  Agreement,
the  Purchase  Price and the number of one  one-hundredths  of a  Preferred
Share which may be purchased  upon the exercise of the Rights  evidenced by
this Right  Certificate are subject to modification and adjustment upon the
happening of certain events.

     This Right Certificate is subject to all of the terms,  provisions and
conditions of the Rights Agreement,  which terms, provisions and conditions
are hereby  incorporated  herein by reference and made a part hereof and to
which Rights  Agreement  reference is hereby made for a full description of
the  rights,  limitations  of rights,  obligations,  duties and  immunities
hereunder  of the Rights  Agent,  the  Company and the holders of the Right
Certificates.  Copies of the Rights  Agreement are on file at the principal
executive  offices of the  Company and the  above-mentioned  offices of the
Rights Agent.


                                    A-1
<PAGE>
     This Right Certificate, with or without other Right Certificates, upon
surrender at the principal office of the Rights Agent, may be exchanged for
another  Right  Certificate  or Right  Certificates  of like tenor and date
evidencing  Rights entitling the holder to purchase a like aggregate number
of Preferred  Shares as the Rights  evidenced by the Right  Certificate  or
Right Certificates surrendered shall have entitled such holder to purchase.
If this Right  Certificate  shall be exercised in part, the holder shall be
entitled to receive upon  surrender  hereof  another Right  Certificate  or
Right Certificates for the number of whole Rights not exercised.

     Subject  to  the  provisions  of  the  Rights  Agreement,  the  Rights
evidenced  by this  Certificate  (i) may be  redeemed  by the  Company at a
redemption  price of $.01 per Right or (ii) may be exchanged in whole or in
part for  Preferred  Shares or shares of the Company's  Common  Stock,  par
value $1.00 per share.

     No fractional Preferred Shares will be issued upon the exercise of any
Right or Rights  evidenced  hereby (other than fractions which are integral
multiples  of one  one-hundredth  of a Preferred  Share,  which may, at the
election of the Company, be evidenced by depositary receipts),  but in lieu
thereof a cash payment will be made, as provided in the Rights Agreement.

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

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









                                    A-2

<PAGE>
     WITNESS the facsimile  signature of the proper officers of the Company
and its corporate seal. Dated as of________ ,___.



ATTEST:                                      THIOKOL CORPORATION




_____________________________                 By_____________________________







Countersigned:




FIRST CHICAGO TRUST COMPANY
  OF NEW YORK


By________________________________
     Authorized Signature







                                    A-3
<PAGE>


                 Form of Reverse Side of Right Certificate

                             FORM OF ASSIGNMENT


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


     FOR VALUE RECEIVED __________________________hereby sells, assigns and
transfers unto_____________________________________________________________
(Please      print      name      and      address      of      transferee)
___________________________________________________________________________
this  Right  Certificate,  together  with all  right,  title  and  interest
therein, and does hereby irrevocably constitute and appoint________________
Attorney,  to transfer  the within  Right  Certificate  on the books of the
within-named Company, with full power of substitution.


Dated:___________________,___


                                        ___________________________________

                                                   Signature

Signature Guaranteed:

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

- ------------------------------------------------------
                  The   undersigned   hereby   certifies  that  the  Rights
evidenced  by this  Right  Certificate  are not  beneficially  owned  by an
Acquiring  Person or an Affiliate  or Associate  thereof (as defined in the
Rights Agreement).




                                 Signature_________________________________


- ------------------------------------------------------

 



                                   A-4
<PAGE>

           Form of Reverse Side of Right Certificate -- continued

                        FORM OF ELECTION TO PURCHASE
                        ----------------------------

                    (To be executed if holder desires to
                  exercise Rights represented by the Right
                               Certificate.)

To:  Thiokol Corporation

     The    undersigned    hereby    irrevocably    elects   to    exercise
_______________________  Rights  represented  by this Right  Certificate to
purchase the Preferred Shares issuable upon the exercise of such Rights and
requests that  certificates for such Preferred Shares be issued in the name
of:

Please insert social security
or other identifying number


- ----------------------------------------------------------------------------
                      (Please print name and address)

- ----------------------------------------------------------------------------

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

Please insert social security
or other identifying number


- ----------------------------------------------------------------------------
                      (Please print name and address)

- ----------------------------------------------------------------------------

Dated:________________,____



                                        ____________________________________
                                                      Signature

Signature Guaranteed:

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


                                  A-5

<PAGE>

           Form of Reverse Side of Right Certificate -- continued


- ---------------------------------------------------------------------------

     The  undersigned  hereby  certifies that the Rights  evidenced by this
Right  Certificate are not beneficially  owned by an Acquiring Person or an
Affiliate or Associate thereof (as defined in the Rights Agreement).



                                             ______________________________
                                                 Signature


- ----------------------------------------------------------------------------

                                                  NOTICE

     The  signature  in the  Form of  Assignment  or Form  of  Election  to
Purchase,  as the case may be, must conform to the name as written upon the
face of this Right Certificate in every particular,  without  alteration or
enlargement or any change whatsoever.

     In the  event  the  certification  set  forth  above  in the  Form  of
Assignment or the Form of Election to Purchase,  as the case may be, is not
completed,  the Company and the Rights Agent will deem the beneficial owner
of the Rights evidenced by this Right Certificate to be an Acquiring Person
or an Affiliate or Associate  thereof (as defined in the Rights  Agreement)
and such Assignment or Election to Purchase will not be honored.






                                    A-6




<PAGE>


                                                               Exhibit B
                                                               ---------


                       SUMMARY OF RIGHTS TO PURCHASE
                              PREFERRED SHARES


     On May 22, 1997,  the Board of Directors of Thiokol  Corporation  (the
"Company")  declared a dividend of one preferred  share  purchase  right (a
"Right") for each  outstanding  share of common stock,  par value $1.00 per
share (the "Common Shares"), of the Company. The dividend is payable on May
30, 1997 (the "Record  Date") to the  stockholders  of record on that date.
Each Right entitles the registered  holder to purchase from the Company one
one-hundredth of a share of Series A Junior Participating  Preferred Stock,
par value  $1.00 per share (the  "Preferred  Shares"),  of the Company at a
price of $240 per one  one-hundredth  of a Preferred  Share (the  "Purchase
Price"), subject to adjustment. The description and terms of the Rights are
set  forth in a Rights  Agreement  (the  "Rights  Agreement")  between  the
Company and First  Chicago  Trust Company of New York, as Rights Agent (the
"Rights Agent").

                  Until the  earlier  to occur of (i) 10 days  following  a
public  announcement  that a person or group of  affiliated  or  associated
persons (an "Acquiring Person") have acquired  beneficial  ownership of 15%
or more of the outstanding  Common Shares or (ii) 10 business days (or such
later date as may be determined  by action of the Board of Directors  prior
to such  time as any  person  or group of  affiliated  persons  becomes  an
Acquiring  Person)  following the  commencement  of, or  announcement of an
intention  to make, a tender offer or exchange  offer the  consummation  of
which would result in the beneficial  ownership by a person or group of 15%
or more of the  outstanding  Common Shares (the earlier of such dates being
called the "Distribution Date"), the Rights will be evidenced, with respect
to any of the Common Share certificates  outstanding as of the Record Date,
by such  Common  Share  certificate  with a copy of this  Summary of Rights
attached thereto.

     The Rights Agreement  provides that,  until the Distribution  Date (or
earlier  redemption  or  expiration  of the  Rights),  the  Rights  will be
transferred  with and only with the Common Shares.  Until the  Distribution
Date (or earlier redemption or expiration of the Rights),  new Common Share
certificates  issued after the Record Date upon transfer or new issuance of
Common Shares will contain a notation incorporating the Rights Agreement by
reference. Until the Distribution Date (or earlier redemption or expiration
of

                                    B-1

<PAGE>

the Rights),  the  surrender  for transfer of any  certificates  for Common
Shares  outstanding as of the Record Date,  even without such notation or a
copy of this Summary of Rights being attached thereto, will also constitute
the transfer of the Rights associated with the Common Shares represented by
such certificate.  As soon as practicable  following the Distribution Date,
separate certificates  evidencing the Rights ("Right Certificates") will be
mailed  to  holders  of  record  of the  Common  Shares  as of the close of
business on the  Distribution  Date and such  separate  Right  Certificates
alone will evidence the Rights.

     The Rights are not exercisable until the Distribution Date. The Rights
will expire on May 30, 2007 (the "Final Expiration Date"), unless the Final
Expiration  Date is extended  or unless the Rights are earlier  redeemed or
exchanged by the Company, in each case, as described below.

     The Purchase  Price  payable,  and the number of  Preferred  Shares or
other  securities  or property  issuable,  upon  exercise of the Rights are
subject  to  adjustment  from time to time to prevent  dilution  (i) in the
event  of  a  stock   dividend  on,  or  a   subdivision,   combination  or
reclassification  of, the Preferred Shares,  (ii) upon the grant to holders
of the Preferred  Shares of certain  rights or warrants to subscribe for or
purchase  Preferred  Shares  at a price,  or  securities  convertible  into
Preferred Shares with a conversion price, less than the then-current market
price of the Preferred  Shares or (iii) upon the distribution to holders of
the  Preferred  Shares of evidences of  indebtedness  or assets  (excluding
regular  periodic cash dividends paid out of earnings or retained  earnings
or dividends  payable in  Preferred  Shares) or of  subscription  rights or
warrants (other than those referred to above).

     The number of outstanding  Rights and the number of one one-hundredths
of a Preferred  Share issuable upon exercise of each Right are also subject
to adjustment in the event of a stock split of the Common Shares or a stock
dividend on the Common  Shares  payable in Common  Shares or  subdivisions,
consolidations or combinations of the Common Shares occurring,  in any such
case, prior to the Distribution Date.

     Preferred  Shares  purchasable upon exercise of the Rights will not be
redeemable. Each Preferred Share will be entitled to a minimum preferential
quarterly  dividend  payment  of $1 per  share but will be  entitled  to an
aggregate  dividend of 100 times the dividend declared per Common Share. In
the event of  liquidation,  the  holders of the  Preferred  Shares  will be
entitled to a minimum  preferential  liquidation  payment of $100 per share
but will be entitled to an aggregate  payment of 100 times the payment made
per Common Share. Each Preferred Share will have 100 votes, voting together
with the Common Shares. Finally, in the event of any merger,  consolidation
or other

                                    B-2

<PAGE>

transaction in which Common Shares are exchanged, each Preferred Share will
be  entitled  to receive 100 times the amount  received  per Common  Share.
These rights are protected by customary antidilution provisions.

     Because of the nature of the Preferred Shares'  dividend,  liquidation
and  voting  rights,  the  value  of the one  one-hundredth  interest  in a
Preferred Share purchasable upon exercise of each Right should  approximate
the value of one Common Share.

     In the  event  that the  Company  is  acquired  in a  merger  or other
business combination  transaction or 50% or more of its consolidated assets
or earning  power are sold after a person or group has become an  Acquiring
Person,  proper  provision will be made so that each holder of a Right will
thereafter have the right to receive, upon the exercise thereof at the then
current exercise price of the Right,  that number of shares of common stock
of the acquiring  company which at the time of such transaction will have a
market  value of two times the  exercise  price of the Right.  In the event
that any person or group of  affiliated or  associated  persons  becomes an
Acquiring  Person,  proper provision shall be made so that each holder of a
Right, other than Rights  beneficially owned by the Acquiring Person (which
will  thereafter be void),  will  thereafter have the right to receive upon
exercise  that number of Common  Shares  having a market value of two times
the exercise price of the Right.

     At any time after any person or group becomes an Acquiring  Person and
prior  to the  acquisition  by such  person  or group of 50% or more of the
outstanding  Common  Shares,  the Board of  Directors  of the  Company  may
exchange the Rights  (other than Rights owned by such person or group which
will have become void),  in whole or in part,  at an exchange  ratio of one
Common Share, or one one-hundredth of a Preferred Share (or of a share of a
class or series of the Company's  preferred stock having equivalent rights,
preferences and privileges), per Right (subject to adjustment).

     With certain  exceptions,  no adjustment in the Purchase Price will be
required until cumulative  adjustments require an adjustment of at least 1%
in such  Purchase  Price.  No  fractional  Preferred  Shares will be issued
(other than fractions which are integral  multiples of one one-hundredth of
a Preferred Share, which may, at the election of the Company,  be evidenced
by depositary  receipts) and in lieu thereof, an adjustment in cash will be
made based on the market price of the Preferred  Shares on the last trading
day prior to the date of exercise.




                                   B-3

<PAGE>

     At  any  time  prior  to the  acquisition  by a  person  or  group  of
affiliated or associated persons of beneficial  ownership of 15% or more of
the  outstanding  Common Shares,  the Board of Directors of the Company may
redeem the Rights in whole,  but not in part,  at a price of $.01 per Right
(the  "Redemption  Price").  The  redemption  of the  Rights  may  be  made
effective at such time on such basis with such  conditions  as the Board of
Directors  in its  sole  discretion  may  establish.  Immediately  upon any
redemption of the Rights,  the right to exercise the Rights will  terminate
and the  only  right  of the  holders  of  Rights  will be to  receive  the
Redemption Price.

     The terms of the Rights may be  amended by the Board of  Directors  of
the Company without the consent of the holders of the Rights,  including an
amendment to lower certain thresholds  described above to not less than the
greater  of  (i)  the  sum of  .001%  and  the  largest  percentage  of the
outstanding  Common  Shares  then known to the  Company to be  beneficially
owned by any person or group of affiliated  or associated  persons and (ii)
10%,  except  that  from and  after  such  time as any  person  or group of
affiliated  or  associated  persons  becomes  an  Acquiring  Person no such
amendment may adversely affect the interests of the holders of the Rights.

     Until a Right is exercised,  the holder thereof, as such, will have no
rights as a stockholder of the Company, including,  without limitation, the
right to vote or to receive dividends.

     A copy of the Rights  Agreement has been filed with the Securities and
Exchange  Commission as an Exhibit to a Registration  Statement on Form 8-A
dated_______  ,1997.  A copy of the Rights  Agreement is available  free of
charge from the Company.  This summary  description  of the Rights does not
purport to be complete and is qualified in its entirety by reference to the
Rights Agreement, which is hereby incorporated herein by reference.



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