DATA TRANSMISSION NETWORK CORP
8-A12G, 1997-08-29
COMPUTER PROGRAMMING, DATA PROCESSING, ETC.
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                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 8-A

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



                      DATA TRANSMISSION NETWORK CORPORATION
- --------------------------------------------------------------------------------
             (Exact name of registrant as specified in its charter)



         Delaware                                              47-0669375
- -----------------------                                  -----------------------
(State of incorporation                                       (IRS Employer
    or organization)                                          Identification
                                                                 Number)


9110 West Dodge Road, Suite 200, Omaha, Nebraska                        68114
- ------------------------------------------------                      ----------
(Address of principal executive offices)                              (Zip Code)


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

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


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

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

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

                         Preferred Stock Purchase Rights
                         -------------------------------
                                (Title of class)
<PAGE>


Item 1.  Description of Registrant's Securities to be Registered.
- ------   --------------------------------------------------------

         On August 29, 1997, the Board of Directors of Data Transmission Network
Corporation (the "Company")  declared a dividend of one preferred share purchase
right (a "Right") for each  outstanding  share of common stock,  par value $.001
per share,  of the Company  (the  "Common  Stock").  The  dividend is payable on
September  2, 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-thousandth of a share of Series A Junior Participating  Preferred Stock, par
value $.50 per  share,  of the  Company  (the  "Preferred  Stock") at a price of
$150.00 per one-thousandth of a share of Preferred Stock (the "Purchase Price"),
subject to adjustment.  The description and terms of the Rights are set forth in
a Rights  Agreement dated as of August 29, 1997, as the same may be amended from
time to time (the "Rights  Agreement"),  between the Company and First  National
Bank of Omaha, 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")  has  acquired  beneficial  ownership of 11% or more of the
outstanding  shares of Common Stock or (ii) 10 business days (or such later date
as may be  determined by action of a majority of  Continuing  Directors  then in
office 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 11% or more of
the  outstanding  shares of Common Stock (the earlier of such dates being called
the "Distribution  Date"), the Rights will be evidenced,  with respect to any of
the Common Stock certificates  outstanding as of the Record Date, by such Common
Stock  certificate  together with a summary  description of the Rights  attached
thereto. The term "Acquiring Person" excludes the Company, any subsidiary of the
Company,  any  employee  benefit  plan of the Company or any  subsidiary  of the
Company, and Roger R. Brodersen (the founder of the Company) and certain related
persons and  entities.  In addition,  any other person  whose  current  level of
beneficial  ownership  exceeds 11% but is less than 14% of the Common Stock will
become an Acquiring Person only if its level of beneficial ownership exceeds 14%
of the Common Stock.

         The Rights Agreement  provides that,  until the  Distribution  Date (or
earlier expiration of the Rights),  the Rights will be transferred with and only
with the Common Stock. Until the Distribution Date (or earlier expiration of the
Rights), new Common Stock certificates issued after the Record Date upon

                                       2
<PAGE>

transfer or new issuances of Common Stock will contain a notation  incorporating
the Rights  Agreement  by  reference.  Until the  Distribution  Date (or earlier
expiration of the Rights),  the surrender for transfer of any  certificates  for
shares of Common  Stock  outstanding  as of the Record  Date,  even without such
notation or a summary  description  of the Rights being attached  thereto,  will
also constitute the transfer of the Rights  associated with the shares of Common
Stock  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 Stock 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 August 29, 2007 (the "Final Expiration  Date"),  unless the Final
Expiration  Date is  advanced  or  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 shares of Preferred Stock
or other securities or property issuable, upon exercise of the Rights is subject
to adjustment from time to time to prevent  dilution (i) in the event of a stock
dividend on, or a subdivision, combination or reclassification of, the Preferred
Stock,  (ii) upon the grant to holders of the Preferred  Stock of certain rights
or  warrants  to  subscribe  for or  purchase  Preferred  Stock at a  price,  or
securities  convertible into Preferred Stock with a conversion  price, less than
the  then  current  market  price  of the  Preferred  Stock  or  (iii)  upon the
distribution  to holders of the Preferred  Stock of evidences of indebtedness or
assets  (excluding  regular  periodic  cash  dividends or  dividends  payable in
Preferred  Stock)  or of  subscription  rights or  warrants  (other  than  those
referred to above).

         The number of outstanding  Rights is subject to adjustment in the event
of a stock  dividend on the Common  Stock  payable in shares of Common  Stock or
subdivisions,  consolidations or combinations of the Common Stock occurring,  in
any such case, prior to the Distribution Date.

         Shares of Preferred Stock  purchasable upon exercise of the Rights will
not be redeemable.  Each share of Preferred Stock will be entitled, when, as and
if declared,  to a minimum preferential  quarterly dividend payment of $1.00 per
share but will be entitled to an  aggregate  dividend of 1000 times the dividend
declared per share of Common Stock. In the event of liquidation,  dissolution or
winding up of the Company,  the holders of the Preferred  Stock will be entitled
to a minimum

                                       3
<PAGE>

preferential  payment  of  $150.00  per  share  (plus  any  accrued  but  unpaid
dividends)  but will be  entitled  to an  aggregate  payment  of 1000  times the
payment made per share of Common Stock.  Each share of Preferred Stock will have
1000 votes, voting together with the Common Stock.  Finally, in the event of any
merger, consolidation or other transaction in which outstanding shares of Common
Stock are converted or exchanged, each share of Preferred Stock will be entitled
to receive  1000  times the amount  received  per share of Common  Stock.  These
rights are protected by customary antidilution provisions.

         Because of the nature of the Preferred  Stock's  dividend,  liquidation
and voting rights,  the value of the one  one-thousandth  interest in a share of
Preferred Stock  purchasable upon exercise of each Right should  approximate the
value of one share of Common Stock.

         In the event  that any  person  or group of  affiliated  or  associated
persons becomes an Acquiring Person,  each holder of a Right,  other than Rights
beneficially  owned by the Acquiring  Person (which will thereupon become void),
will  thereafter  have the right to receive upon exercise of a Right that number
of shares of Common Stock having a market value of two times the exercise  price
of the Right.

         In the event  that,  after a person or group  has  become an  Acquiring
Person,  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,
proper provisions will be made so that each holder of a Right (other than Rights
beneficially  owned by an  Acquiring  Person  which will have become  void) will
thereafter have the right to receive upon the exercise of a Right that number of
shares of common  stock of the person  with whom the  Company has engaged in the
foregoing  transaction (or its parent) that at the time of such transaction have
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 earlier of one of the events described in the previous paragraph or
the  acquisition  by such  Acquiring  Person  of 50% or more of the  outstanding
shares  of  Common  Stock,  the  Board of  Directors  of the  Company  (with the
concurrence  of a majority  of the  Continuing  Directors  then in  office)  may
exchange the Rights (other than Rights owned by such Acquiring Person which will
have become void),  in whole or in part, for shares of Common Stock or Preferred
Stock (or a series of the Company's  preferred stock having  equivalent  rights,
preferences and privileges), at an exchange ratio of one share of Common Stock,

                                       4
<PAGE>

or a fractional share of Preferred Stock (or other preferred  stock)  equivalent
in value thereto, per Right.

         The Rights Agreement defines "Continuing Director" as any member of the
Company's  Board of Directors who is not an Acquiring  Person or an affiliate or
associate of an Acquiring Person or a  representative  of an Acquiring Person or
any such  affiliate  or  associate  and  either (i) was a member of the Board of
Directors prior to the date of the Rights Agreement or (ii) subsequently becomes
a Board  member,  if such  person's  nomination  for election or election to the
Board is recommended or approved by a majority of the Continuing Directors.

         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  shares of Preferred  Stock or Common Stock
will be issued  (other than  fractions  of  Preferred  Stock which are  integral
multiples of one  one-thousandths  of a share of Preferred Stock,  which may, at
the election of the Company, be evidenced by depository  receipts),  and in lieu
thereof an adjustment in cash will be made based on the current  market price of
the Preferred Stock or the Common Stock.

         At any time prior to the time an Acquiring  Person  becomes  such,  the
Board of Directors  of the Company  (with the  concurrence  of a majority of the
Continuing  Directors)  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 and with such  conditions as
the Board of Directors  and the  majority of such  Continuing  Directors  may in
their discretion  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.

         For so long as the  Rights  are then  redeemable,  the  Company  may by
majority  vote of the Board of  Directors  and majority  vote of the  Continuing
Directors,  except  with  respect  to the  redemption  price,  amend the  Rights
Agreement in any manner. After the Rights are no longer redeemable,  the Company
may, except with respect to the redemption price,  amend the Rights Agreement in
any  manner  that does not  adversely  affect  the  interests  of holders of the
Rights.

         Until a Right is exercised or exchanged,  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.

                                       5
<PAGE>


         The Rights  Agreement,  which  includes as Exhibit B the Form of Rights
Certificate,  is  attached  hereto as  Exhibit 1 and is  incorporated  herein by
reference.  The  foregoing  description  of the  Rights  does not  purport to be
complete and is qualified in its entirety by reference to such Exhibit.

Item 2.  Exhibits.
- -------  ---------

1.       Rights   Agreement,   dated  as  of  August  29,  1997,   between  Data
         Transmission  Network  Corporation and First National Bank of Omaha, as
         Rights Agent,  which includes the Form of Certificate of Designation of
         Series A Junior Participating Preferred Stock as Exhibit A, the Form of
         Right  Certificate  as Exhibit B, and the Summary of Rights to Purchase
         Shares of Preferred Stock as Exhibit C.

2.       Form of press release dated August 29, 1997.


                                   Signatures
                                   ----------

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

         Date: August 29, 1997.

                                           DATA TRANSMISSION NETWORK CORPORATION



                                             By: /s/ Brian L. Larson
                                                 -------------------------------
                                                 Brian L. Larson, Vice
                                                 President, Chief Financial
                                                 Officer, Secretary and
                                                 Treasurer
                                       
                                       6

<PAGE>
                                  EXHIBIT INDEX

                                                                    Page Number
                                                                   In Sequential
Exhibit                                                              Numbering
  No.                                                                  System
- -------                                                            -------------
  1                    Rights Agreement, dated as of                      1
                       August 29, 1997, between Data
                       Transmission Network Corporation and
                       First National Bank of Omaha, 
                       as Rights Agent,  which includes
                       the Form of  Certificate  of
                       Designation of Series  A  Junior
                       Participating  Preferred  Stock as
                       Exhibit A, the Form of Right  Certificate
                       as Exhibit B, and the  Summary of Rights 
                       to  Purchase  Shares of Preferred Stock
                       as Exhibit C.

  2                    Form of press release dated August 29, 1997.      70

                                       7




                      DATA TRANSMISSION NETWORK CORPORATION

                                       and

                          FIRST NATIONAL BANK OF OMAHA,

                                  Rights Agent








                                RIGHTS AGREEMENT

                           Dated as of August 29, 1997

                                     - 1 -
<PAGE>

                                TABLE OF CONTENTS
                                -----------------

Section                                                                     Page
- -------                                                                     ----

   1  Certain Definitions........................................             1

   2  Appointment of Rights Agent................................             8

   3  Issue of Right Certificates................................             8

   4  Form of Right Certificates.................................             10

   5  Countersignature and Registration..........................             10

   6  Transfer, Split Up, Combination and Exchange
      of Right Certificates; Mutilated, Destroyed,
      Lost or Stolen Right Certificates..........................             11

   7  Exercise of Rights, Purchase Price;
      Expiration Date of Rights..................................             12

   8  Cancellation and Destruction of Right
      Certificates...............................................             13

   9  Availability of Shares of Preferred Stock..................             14

   10 Preferred Stock Record Date................................             15

   11 Adjustment of Purchase Price, Number and
      Kind of Shares and Number of Rights........................             16

   12 Certificate of Adjusted Purchase Price or
      Number of Shares...........................................             25

   13 Consolidation, Merger or Sale or Transfer
      of Assets or Earning Power.................. ..............             25

   14 Fractional Rights and Fractional Shares....................             29

   15 Rights of Action............................. .............             31

   16 Agreement of Right Holders.................................             31

   17 Right Certificate Holder Not Deemed a
      Stockholder................................................             32

   18 Concerning the Rights Agent................................             32

                                       i

                                     - 2 -
<PAGE>

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

   20 Duties of Rights Agent.....................................             34

   21 Change of Rights Agent.....................................             36

   22 Issuance of New Right Certificates.........................             37

   23 Redemption.................................................             37

   24 Exchange...................................................             38

   25 Notice of Certain Events...................................             40

   26 Notices....................................................             40

   27 Supplements and Amendments.................................             41

   28 Successors.................................................             42

   29 Benefits of this Agreement.................................             42

   30 Determinations and Actions by the Board of
      Directors..................................................             42

   31 Severability...............................................             42

   32 Governing Law..............................................             43

   33 Counterparts...............................................             43

   34 Descriptive Headings.......................................             43

Exhibit A - Form of Certificate of Designation

Exhibit B - Form of Right Certificate

Exhibit C - Summary of Rights

Exhibit D - Voting Trust Agreement

                                       ii

                                     - 3 -
<PAGE>

                                RIGHTS AGREEMENT

         Rights Agreement,  dated as of August 29, 1997  ("Agreement").  between
Data Transmission Network  Corporation.  a Delaware corporation (the "Company"),
and First National Bank of Omaha, as Rights Agent (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 share of
Common Stock (as hereinafter defined) of the Company outstanding as of the Close
of Business (as defined  below) on September 2, 1997 (the "Record  Date"),  each
Right  representing  the  right  to  purchase  one  one-thousandth  (subject  to
adjustment) of a share of Preferred  Stock (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  (subject to  adjustment  as provided
herein) with respect to each share of Common Stock that shall become outstanding
between  the  Record  Date  and the  earlier  of the  Distribution  Date and the
Expiration Date (as such terms are hereinafter defined); provided, however, that
Rights may be issued with  respect to shares of Common  Stock that shall  become
outstanding  after the  Distribution  Date and prior to the  Expiration  Date in
accordance with Section 22.

         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 shall be the Beneficial Owner (as such term is
hereinafter  defined)  of 11% or  more  of  the  shares  of  Common  Stock  then
outstanding, but shall not include an Exempt Person (as such term is hereinafter
defined);  provided,  however, that (i) if the Board of Directors of the Company
determines  in good  faith that a Person who would  otherwise  be an  "Acquiring
Person" became such inadvertently  (including,  without limitation,  because (A)
such Person was unaware that it beneficially  owned a percentage of Common Stock
that would otherwise  cause such Person to be an "Acquiring  Person" or (B) such
Person was aware of the extent of its  Beneficial  Ownership of Common Stock but
had no actual knowledge of the  consequences of such Beneficial  Ownership under
this Agreement) and without any intention of changing or influencing  control of
the Company,  and if such Person as promptly as practicable  divested or divests
itself of Beneficial  Ownership of a sufficient number of shares of Common Stock
so that such Person would no longer be an  "Acquiring  Person," then such Person
shall not be  deemed  to be or to have  become  an  "Acquiring  Person"  for any

                                       1

                                     - 4 -

<PAGE>

purposes of this  Agreement;  (ii) if, as of the date hereof,  any Person is the
Beneficial  Owner of 11% or more but less than 14% of the shares of Common Stock
outstanding, such Person shall not be or become an "Acquiring Person" unless and
until such time as such Person shall become the Beneficial  Owner of 14% or more
of the shares of Common Stock then outstanding; and (iii) no Person shall become
an "Acquiring  Person" as the result of an acquisition of shares of Common Stock
by the Company which,  by reducing the number of shares  outstanding,  increases
the proportionate  number of shares of Common Stock  beneficially  owned by such
Person to 11% or more of the shares of Common Stock then  outstanding (or 14% or
more of the shares of Common Stock then  outstanding in the event the Person was
the  Beneficial  Owner of 11% or more but less than 14% of the  shares of Common
Stock outstanding on the date hereof), provided, however, that if a Person shall
become the  Beneficial  Owner of 11% or more of the shares of Common  Stock then
outstanding  (or 14% or more of the shares of Common Stock then  outstanding  in
the event the Person was the  Beneficial  Owner of 11% or more but less than 14%
of the shares of Common Stock  outstanding on the date hereof) by reason of such
share  acquisitions  by the Company and shall  thereafter  become the Beneficial
Owner of any  additional  shares of  Common  Stock  (other  than  pursuant  to a
dividend or distribution  paid or made by the Company on the outstanding  Common
Stock in shares of Common  Stock or  pursuant to a split or  subdivision  of the
outstanding Common Stock),  then such Person shall be deemed to be an "Acquiring
Person" unless upon becoming the Beneficial  Owner of such additional  shares of
Common Stock such Person does not  beneficially own 11% or more of the shares of
Common Stock then outstanding (or 14% or more of the shares of Common Stock then
outstanding in the event the Person was the Beneficial  Owner of 11% or more but
less than 14% of the shares of Common Stock outstanding on the date hereof). For
all  purposes  of this  Agreement,  any  calculation  of the number of shares of
Common Stock  outstanding  at any  particular  time,  including  for purposes of
determining the particular percentage of such outstanding shares of Common Stock
of which any Person is the Beneficial  Owner,  shall be made in accordance  with
the last sentence of Rule  13d-3(d)(1)(i)  of the General Rules and  Regulations
under the Securities  Exchange Act of 1934, as amended (the "Exchange  Act"), as
in effect on the date hereof.

                  (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 Exchange Act, as in effect on the date hereof.

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

                                       2

                                     - 5 -

<PAGE>
                           (i)  which  such  Person  or  any  of  such  Person's
Affiliates or Associates is deemed to beneficially  own, directly or indirectly,
within the meaning of Rule 13d-3 of the General Rules and Regulations  under the
Exchange Act as in effect on the date hereof;

                           (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, warrants or options, or otherwise;  provided,  however,
that a Person shall not be deemed the  Beneficial  Owner of, or to  beneficially
own, (x) 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,  (y) securities  which such
Person has a right to acquire  upon the  exercise of Rights at any time prior to
the time that any Person becomes an Acquiring Person or (z) securities  issuable
upon the  exercise of Rights from and after the time that any Person  becomes an
Acquiring  Person if such  Rights  were  acquired  by such Person or any of such
Person's  Affiliates or Associates prior to the Distribution Date or pursuant to
Section  3(a) or Section 22 hereof  ("Original  Rights")  or pursuant to Section
11(i) or Section 11(n) with respect to an adjustment to Original Rights;  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 by reason of such  agreement,  arrangement or
understanding  if the  agreement,  arrangement  or  understanding  to vote  such
security  (1) arises  solely  from a  revocable  proxy or consent  given to such
Person in response to a public proxy or consent  solicitation  made pursuant to,
and in accordance with, the applicable rules and regulations  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 and with respect to 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 such  securities of the
Company;

                                       3

                                     - 6 -

<PAGE>

provided, however, that (A) no Person who is an officer, director or employee of
an Exempt Person shall be deemed,  solely by reason of such  Person's  status or
authority  as  such,  to be the  "Beneficial  Owner"  of,  to  have  "Beneficial
Ownership" of or to  "beneficially  own" any securities  that are  "beneficially
owned" (as defined in this Section 1(c)),  including,  without limitation,  in a
fiduciary capacity,  by an Exempt Person or by any other such officer,  director
or  employee  of an Exempt  Person and (B) solely for  purposes  of  determining
whether a Person is an Acquiring  Person as defined in Section  1(a),  no Person
shall be deemed to be the "Beneficial Owner" of, to have "Beneficial  Ownership"
of or to "beneficially own" any shares of Common Stock which are and continue to
be subject to a voting trust agreement,  in substantially  the form of Exhibit D
hereto,  with the  Continuing  Directors in office at the time of the  execution
thereof  being the  initial  trustees,  so long as the  shares  of Common  Stock
beneficially  owned by such Person  (determined  without the  operation  of this
clause (B) and  therefore  including  the shares  subject to such  voting  trust
agreement) do not in the  aggregate  exceed 20% of the shares of Common Stock of
the Company then outstanding.

                  (d) "Business Day" shall mean any day other than a Saturday, a
Sunday or a day on which  banking  institutions  in the State of Nebraska or the
city in which the principal office of the Rights Agent is located 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., Omaha,  Nebraska time, on such date; provided,  however, that if such date
is not a Business Day it shall mean 5:00 P.M., Omaha, Nebraska time, on the next
succeeding Business Day.

                  (f)  "Common  Stock" when used with  reference  to the Company
shall mean the  Common  Stock,  presently  par value  $0.001  per share,  of the
Company.  "Common  Stock" when used with  reference to any Person other than the
Company  shall  mean the  common  stock  (or,  in the case of an  unincorporated
entity,  the equivalent  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)      "Common  Stock  Equivalents"  shall have the  meaning
set forth in  Section  11(a)(iii) hereof.

                  (h)  "Continuing  Director"  shall  mean (i) any member of the
Board of Directors of the  Company,  while a member of the Board,  who is not an
Acquiring  Person,  or an Affiliate or  Associate of an Acquiring  Person,  or a
representative of an Acquiring Person or of any such Affiliate or Associate, and
who was a member of the Board prior to the date of this  Agreement,  or (ii) any

                                       4

                                     - 7 -

<PAGE>

Person who  subsequently  becomes a member of the  Board,  while a member of the
Board,  who is not an  Acquiring  Person,  or an  Affiliate  or  Associate of an
Acquiring  Person,  or a  representative  of an Acquiring  Person or of any such
Affiliate or Associate,  if such Person's nomination for election or election to
the Board is recommended or approved by a majority of the Continuing Directors.

                  (i)      "Current Value" shall have the meaning set forth in 
Section 11(a)(iii) hereof.

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

                  (k)      "Equivalent Preferred Shares" shall have the meaning
set forth in Section 11(b) hereof.

                  (l) "Exempt  Person" shall mean the Company or any  Subsidiary
(as such term is hereinafter  defined) of the Company,  in each case  including,
without limitation,  in its fiduciary capacity,  or any employee benefit plan of
the  Company  or of any  Subsidiary  of the  Company,  or any  entity or trustee
holding  Common  Stock for or  pursuant to the terms of any such plan or for the
purpose  of  funding  any such  plan or  funding  other  employee  benefits  for
employees  of  the  Company  or  of  any  Subsidiary  of  the  Company,  or  any
Grandfathered Person (as such term is hereinafter defined.)

                  (m)      "Exchange Ratio" shall have the meaning set forth in
Section 24 hereof.

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

                  (o)      "Flip-In Event" shall have the meaning set forth in
Section 11(a)(ii) hereof.

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

                  (q)      "Grandfathered Person" shall mean:

                           (i)  Roger R. Brodersen (the founder of the Company),
                  any descendant of Roger R. Brodersen,  or any spouse, widow or
                  widower of Roger R. Brodersen or any such descendant (Roger R.
                  Brodersen  and  any  such  descendants,  spouses,  widows  and
                  widowers   collectively   defined  as  the  "Brodersen  Family
                  Members");   

                           (ii)  any   estate   of,  or  the   executor   or
                  administrator  of any estate of, or any  guardian or custodian
                  for, a Brodersen Family Member or any trust established before
                  
                                       5

                                     - 8 -

<PAGE>

                  or  after  the date  hereof  by one or more  Brodersen  Family
                  Members,  provided that one or more Brodersen  Family Members,
                  collectively,  are the  beneficiaries  of at least  80% of the
                  actuarially-determined  beneficial interests in such estate or
                  trust;

                           (iii) any charitable  organization which qualifies as
                  an exempt  organization  under Section  501(c) of the Internal
                  Revenue Code of 1986, as amended  ("Charitable  Organization")
                  which is established  by one or more Brodersen  Family Members
                  (a "Brodersen Family Charitable Organization");

                           (iv) any  corporation  of  which at least  80% of the
                  voting power and at least 80% of the equity  interest is held,
                  directly or  indirectly,  by or for the benefit of one or more
                  Brodersen Family Members, estates, executors,  administrators,
                  guardians  or  custodians  or trusts  described in clause (ii)
                  above, or Brodersen Family Charitable Organizations; and

                           (v) any  general  partnership,  limited  partnership,
                  organization  or other entity or arrangement of which at least
                  80% of the voting  interest  and at least 80% of the  economic
                  interest  is  held,  directly  or  indirectly,  by or for  the
                  benefit  of one or more  Brodersen  Family  Members,  estates,
                  executors, administrators,  guardians or custodians, or trusts
                  described in clause (ii) above, or Brodersen Family Charitable
                  Organizations;

provided,  however,  that a  Grandfathered  Person ceases to be a  Grandfathered
Person  at the time that all or any part of its  interest  in the  Common  Stock
becomes reportable on a Schedule 13D under the Securities  Exchange Act of 1934,
as amended (or any comparable or successor report) as part of a "group" (as such
term is defined or used under Rule 13d-5(b) of the General Rules and Regulations
under the Securities  Exchange Act of 1934, as amended) which beneficially owns,
directly or  indirectly,  11% or more of the then  outstanding  shares of Common
Stock and  includes one or more persons  (including  any  affiliate or associate
thereof) who (i) are not  Grandfathered  Persons and (ii) individually or in the
aggregate  beneficially  owned,  directly or indirectly,  in excess of 1% of the
then  outstanding  shares of Common  Stock.  For purposes of the  definition  of
Grandfathered  Person,  the term "descendant" shall be deemed to include adopted
children  and the  issue of such  adopted  children,  including  adopted  issue,
provided that any such adoptee is adopted before his or her eighteenth birthday.

                  (r)      "NASDAQ" shall mean The NASDAQ Stock Market.

                                       6

                                     - 9 -

<PAGE>

                  (s) "Person"  shall mean any  individual,  firm,  corporation,
partnership, limited liability company, trust or other entity, and shall include
any successor (by merger or otherwise) to such entity.

                  (t)   "Preferred   Stock"  shall  mean  the  Series  A  Junior
Participating  Preferred  Stock, par value $.50 per share, of the Company having
the rights and  preferences  set forth in the Form of Certificate of Designation
attached to this Agreement as Exhibit A.

                  (u)      "Principal Party" shall have the meaning set forth in
Section 13(b) hereof.

                  (v)      "Redemption Date" shall have the meaning set forth in
Section 7 hereof.

                  (w)      "Redemption Price" shall have the meaning set forth
in Section 23 hereof.

                  (x)      "Right Certificate" shall have the meaning set forth
in Section 3 hereof.

                  (y)      "Securities Act" shall mean the Securities Act of
1933, as amended.

                  (z)      "Section   11(a)(ii)  Trigger  Date"  shall  have the
meaning  set  forth  in  Section 11(a)(iii) hereof.

                  (aa)     "Spread" shall have the meaning set forth in Section
11(a)(iii) hereof.

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

                  (cc)  "Subsidiary" of any Person shall mean any corporation or
other entity of which  securities or other ownership  interests  having ordinary
voting power  sufficient  to elect a majority of the board of directors or other
persons  performing  similar  functions  are  beneficially  owned,  directly  or
indirectly,  by such  Person,  and  any  corporation  or  other  entity  that is
otherwise controlled by such Person.

                  (dd)     "Substitution Period" shall have the meaning set
forth in Section 11(a)(iii) hereof.

                                       7

                                     - 10 -

<PAGE>

                  (ee)     "Summary of Rights" shall have the meaning set forth
in Section 3 hereof.

                  (ff)     "Trading Day" shall have the meaning set forth in 
Section 11(d)(i) hereof.

         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 be the
holders of Common Stock) 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 Close of  Business  on the  earlier  of (i) the
tenth day after the Stock  Acquisition  Date or (ii) the tenth  Business Day (or
such  later date as may be  determined  by action of a  majority  of  Continuing
Directors  then in office prior to such time as any Person  becomes an Acquiring
Person) after the date of the  commencement  by any Person (other than an Exempt
Person) of, or of the first public  announcement of the intention of such Person
(other  than an Exempt  Person)  to  commence,  a tender or  exchange  offer the
consummation  of which would result in any Person (other than an Exempt  Person)
becoming the Beneficial Owner of shares of Common Stock  aggregating 11% or more
of the Common  Stock then  outstanding  (the  earlier of such dates being herein
referred to as the "Distribution  Date",  provided,  however,  that if either of
such dates occurs after the date of this Agreement and on or prior to the Record
Date, then the Distribution  Date shall be the Record Date), (x) the Rights will
be  evidenced  (subject  to  the  provisions  of  Section  3(b)  hereof)  by the
certificates for Common Stock registered in the names of the holders thereof and
not by separate Right Certificates, and (y) the Rights will be transferable only
in connection  with the transfer of Common Stock.  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  Stock as of the  close of  business  on the
Distribution Date (other than any Acquiring Person or any Associate or Affiliate
of an Acquiring  Person),  at the address of such holder shown on the records of
the Company, a Right Certificate,  in substantially the form of Exhibit B hereto
(a "Right Certificate"), evidencing one Right (subject to adjustment as provided
herein) for each share of Common Stock so held. As of the Distribution Date, the
Rights will be evidenced solely by such Right Certificates.

                                       8

                                     - 11 -

<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  Shares of
Preferred Stock, in substantially  the form of Exhibit C hereto (the "Summary of
Rights"), by first-class,  postage-prepaid mail, to each record holder of Common
Stock as of the Close of Business  on the Record Date (other than any  Acquiring
Person or any Associate or Affiliate of any Acquiring Person), at the address of
such holder  shown on the records of the Company.  With respect to  certificates
for Common Stock 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 the Summary of Rights. Until the Distribution Date
(or, if  earlier,  the  Expiration  Date),  the  surrender  for  transfer of any
certificate  for Common Stock  outstanding on the Record Date, with or without a
copy of the Summary of Rights,  shall also constitute the transfer of the Rights
associated with the Common Stock represented thereby.

                  (c) Certificates  issued for Common Stock (including,  without
limitation,  upon transfer of  outstanding  Common Stock,  disposition of Common
Stock out of treasury  stock or issuance or  reissuance  of Common  Stock out of
authorized  but unissued  shares) after the Record Date but prior to the earlier
of the  Distribution  Date and the  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  Data
         Transmission  Network  Corporation and First National Bank of Omaha, as
         Rights  Agent,  dated as of August 29,  1997 as the same may be amended
         from  time to time  (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  Data  Transmission  Network
         Corporation.  Under certain  circumstances,  as set forth in the Rights
         Agreement,  such Rights will be evidenced by separate  certificates and
         will no longer be  evidenced  by this  certificate.  Data  Transmission
         Network  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 owned by or transferred to any Person who is
         or becomes an Acquiring Person (as defined in the Rights Agreement) and
         certain  transferees  thereof  will  become  null  and void and will no
         longer be transferable.

With respect to such  certificates  containing the foregoing  legend,  until the
Distribution  Date the Rights  associated  with the Common Stock  represented by

                                       9

                                     - 12 -

<PAGE>

such  certificates  shall  be  evidenced  by such  certificates  alone,  and the
surrender  for transfer of any such  certificate,  except as otherwise  provided
herein,  shall also  constitute the transfer of the Rights  associated  with the
Common Stock  represented  thereby.  In the event that the Company  purchases or
otherwise  acquires  any Common  Stock  after the  Record  Date but prior to the
Distribution  Date, any Rights associated with such Common Stock shall be deemed
canceled  and retired so that the Company  shall not be entitled to exercise any
Rights associated with the Common Stock which are no longer outstanding.

                  Notwithstanding  this  paragraph (c), the omission of a legend
shall not affect the  enforceability of any part of this Agreement or the rights
of any holder of the Rights.

         Section 4. Form of Right Certificates.  The Right Certificates (and the
forms of  election  to purchase  shares and of  assignment  to be printed on the
reverse  thereof)  shall be  substantially  in the form set  forth in  Exhibit B
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 or  interdealer  quotation  system on which the Rights may from time to
time be listed or quoted,  or to conform to usage.  Subject to the provisions of
Sections 11, 13 and 22 hereof,  the Right Certificates shall entitle the holders
thereof to purchase such number of one  one-thousandths  of a share of Preferred
Stock as shall be set forth  therein  at the price per one  one-thousandth  of a
share of Preferred  Stock set forth  therein  (the  "Purchase  Price"),  but the
number  of such  one  one-thousandths  of a share  of  Preferred  Stock  and the
Purchase Price shall be subject to adjustment as provided herein.

         Section 5. Countersignature and Registration.

                  (a) The Right  Certificates shall be executed on behalf of the
Company by the Chief  Executive  Officer of the Company,  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 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,

                                       10

                                     - 13 -

<PAGE>

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

                  (b) Following  the  Distribution  Date,  the Rights Agent will
keep or cause to be kept,  at an office or agency  designated  for such purpose,
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.

                  (a) Subject to the provisions of Sections 7(e), 11(a)(ii),  13
and 14  hereof,  at any  time  after  the  Distribution  Date  and  prior to the
Expiration Date, any Right Certificate or Right Certificates 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-thousandths  of a share of Preferred Stock 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 office or agency of the
Rights  Agent  designated  for such  purpose.  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.

                  (b) Subject to the provisions of Section  11(a)(ii) hereof, at
any time after the  Distribution  Date and prior to the  Expiration  Date,  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

                                       11

                                     - 14 -

<PAGE>

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) Except as  otherwise  provided  herein,  the Rights  shall
become  exercisable  on the  Distribution  Date,  and  thereafter the registered
holder of any Right  Certificate  may,  subject to Section  11(a)(ii) hereof and
except as otherwise  provided herein,  exercise the Rights evidenced  thereby in
whole or in part  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 office or agency of the Rights Agent  designated  for such purpose,
together with payment of the aggregate  Purchase Price with respect to the total
number  of  one  one-thousandths  of  a  share  of  Preferred  Stock  (or  other
securities, cash or other assets, as the case may be) as to which the Rights are
exercised,  at any time which is both after the  Distribution  Date and prior to
the time  (the  "Expiration  Date")  that is the  earliest  of (i) the  Close of
Business  on August 29,  2007 (the "Final  Expiration  Date"),  (ii) 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 shall be initially $150.00 for each one
one-thousandth  of a share of Preferred Stock purchasable upon the exercise of a
Right.  The Purchase Price and the number of one  one-thousandths  of a share of
Preferred Stock or other  securities or property to be acquired upon exercise of
a Right shall be subject to adjustment from time to time as provided in Sections
11 and 13 hereof and shall be payable  in lawful  money of the United  States of
America in accordance with paragraph (c) of this Section 7.

                  (c) Except as  otherwise  provided  herein,  upon receipt of a
Right Certificate  representing exercisable Rights, with the form of election to
purchase duly executed,  accompanied by payment of the aggregate  Purchase Price
for the shares of  Preferred  Stock 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,  in cash or 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 Stock  certificates for the number of shares of Preferred Stock 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

                                       12

                                     - 15 -

<PAGE>

depositary receipts representing interests in such number of one one-thousandths
of a share of Preferred Stock as are to be purchased (in which case certificates
for the Preferred  Stock  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 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)  promptly  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,  promptly deliver such cash to or upon the order of
the registered holder of such Right Certificate.

                  (d)  Except  as  otherwise   provided  herein,   in  case  the
registered  holder of any Right  Certificate shall exercise less than all of the
Rights evidenced thereby,  a new Right Certificate  evidencing Rights equivalent
to the exercisable  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.

                  (e)   Notwithstanding   anything  in  this  Agreement  to  the
contrary,  neither  the  Rights  Agent nor the  Company  shall be  obligated  to
undertake  any action  with  respect to a  registered  holder of Rights upon the
occurrence of any purported transfer or exercise of Rights pursuant to Section 6
hereof or this Section 7 unless such registered  holder shall have (i) completed
and  signed  the  certificate  contained  in the form of  assignment  or form of
election to purchase  set forth on the  reverse  side of the Rights  Certificate
surrendered  for such  transfer or exercise and (ii)  provided  such  additional
evidence of the identity of the Beneficial  Owner (or former  Beneficial  Owner)
thereof as the Company shall reasonably request.

         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 canceled form,
or, if  surrendered  to the Rights Agent,  shall be canceled by it, and no Right
Certificates  shall be issued in lieu thereof  except as expressly  permitted by
any of the provisions of this Agreement. The Company shall deliver to the Rights
Agent for cancellation and retirement,  and the Rights Agent shall so cancel and
retire,  any other  Right  Certificate  purchased  or  acquired  by the  Company
otherwise than upon the exercise thereof. The Rights Agent shall deliver all

                                       13

                                     - 16 -

<PAGE>

canceled Right Certificates to the Company,  or shall, at the written request of
the Company,  destroy such canceled Right  Certificates,  and in such case shall
deliver a certificate of destruction thereof to the Company.

         Section 9. Availability of Shares of Preferred Stock.

                  (a) The Company  covenants and agrees that it will cause to be
reserved  and kept  available  out of its  authorized  and  unissued  shares  of
Preferred  Stock or any  shares of  Preferred  Stock held in its  treasury,  the
number of shares of  Preferred  Stock  that  will be  sufficient  to permit  the
exercise in full of all outstanding Rights.

                  (b) So long as the shares of Preferred  Stock (and,  following
the time that any Person becomes an Acquiring Person, shares of Common Stock and
other securities) issuable upon the exercise of Rights may be listed or admitted
to trading on any national securities exchange, or quoted on NASDAQ, the Company
shall use its best  efforts  to cause,  from and after  such time as the  Rights
become  exercisable,  all  shares  reserved  for such  issuance  to be listed or
admitted to trading on such exchange,  or quoted on NASDAQ, upon official notice
of issuance upon such exercise.

                  (c) From and after such time as the Rights become exercisable,
the Company shall use its best efforts, if then necessary to permit the issuance
of shares of Preferred Stock (and, following the time that any Person becomes an
Acquiring Person, shares of Common Stock and other securities) upon the exercise
of Rights,  to  register  and  qualify  such  shares of  Preferred  Stock  (and,
following the time that any Person becomes an Acquiring Person, shares of Common
Stock and other  securities)  under the Securities Act and any applicable  state
securities  or "Blue  Sky"  laws (to the  extent  exemptions  therefrom  are not
available),  cause such  registration  statement  and  qualifications  to become
effective as soon as possible after such filing and keep such  registration  and
qualifications  effective  until the  earlier of the date as of which the Rights
are no longer  exercisable  for such  securities  and the  Expiration  Date. The
Company may temporarily suspend, for a period of time not to exceed 90 days, the
exercisability  of the  Rights  in order  to  prepare  and  file a  registration
statement under the Securities Act and permit it to become  effective.  Upon any
such suspension,  the Company shall issue a public announcement stating that the
exercisability of the Rights has been temporarily suspended, as well as a public
announcement   at  such  time  as  the   suspension  is  no  longer  in  effect.
Notwithstanding  any  provision of this  Agreement to the  contrary,  the Rights
shall not be exercisable in any jurisdiction unless the requisite  qualification

                                       14

                                     - 17 -

<PAGE>

in such jurisdiction shall have been obtained and until a registration statement
under the Securities Act (if required) shall have been declared effective.

                  (d) The  Company  covenants  and agrees  that it will take all
such action as may be  necessary  to ensure that all shares of  Preferred  Stock
(and, following the time that any Person becomes an Acquiring Person,  shares of
Common Stock and other  securities)  delivered upon exercise of Rights shall, at
the time of delivery  of the  certificates  therefor  (subject to payment of the
Purchase  Price),  be duly and validly  authorized and issued and fully paid and
nonassessable shares.

                  (e) The Company further  covenants and agrees that it will pay
when due and payable any and all  federal and state  transfer  taxes and charges
which may be  payable  in  respect  of the  issuance  or  delivery  of the Right
Certificates  or of any shares of Preferred  Stock (or shares of Common Stock or
other  securities) 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
Stock (or shares of Common Stock or other  securities) in a name other than that
of, the registered holder of the Right Certificate evidencing Rights surrendered
for exercise or to issue or deliver any certificates or depositary  receipts for
Preferred  Stock  (or  shares  of  Common  Stock or other  securities)  upon the
exercise  of any  Rights  until any such tax shall  have been paid (any such tax
being payable by that holder of such 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 Stock Record Date. Each Person in whose name any
certificate  for Preferred Stock is issued upon the exercise of Rights shall for
all  purposes  be deemed to have  become  the  holder of record of the shares of
Preferred Stock 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  Stock  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  Stock 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 Stock for which the
Rights shall be exercisable, including, without limitation, the right to vote or
to  receive  dividends  or other  distributions,  and shall not be  entitled  to

                                       15

                                     - 18 -

<PAGE>

receive any notice of any proceedings of the Company, except as provided herein.

         Section 11. Adjustment of Purchase Price, Number and Kind of Shares and
Number of Rights. The Purchase Price, the number of shares of Preferred Stock or
other  securities  or property  purchasable  upon exercise of each Right and the
number of Rights  outstanding  are  subject to  adjustment  from time to time as
provided in this Section 11.

                  (a)(i) In the event the  Company  shall at any time  after the
date of this  Agreement  (A) declare and pay a dividend on the  Preferred  Stock
payable in shares of Preferred  Stock,  (B) subdivide the outstanding  Preferred
Stock,  (C) combine the  outstanding  Preferred  Stock into a smaller  number of
shares of  Preferred  Stock or (D) issue any  shares of its  capital  stock in a
reclassification of the Preferred Stock (including any such  reclassification in
connection with a consolidation or merger in which the Company is the continuing
or surviving  corporation),  except as otherwise provided in this Section 11(a),
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  Stock  transfer books of the Company were
open,  the  holder  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.

                  (ii) Subject to Section 24 of this Agreement, in the event any
Person  becomes an Acquiring  Person (the first  occurrence  of such event being
referred to  hereinafter  as the "Flip-In  Event"),  then (A) the Purchase Price
shall be adjusted to be the Purchase  Price in effect  immediately  prior to the
Flip-In  Event  multiplied  by the number of one  one-thousandths  of a share of
Preferred  Stock  for which a Right was  exercisable  immediately  prior to such
Flip-In  Event,  whether  or not such Right was then  exercisable,  and (B) each
holder of a Right,  except as otherwise  provided in this Section  11(a)(ii) and
Section  11(a)(iii)  hereof,  shall  thereafter have the right to receive,  upon
exercise  thereof at a price equal to the Purchase  Price (as so  adjusted),  in
accordance  with the terms of this  Agreement and in lieu of shares of Preferred
Stock,  such number of shares of Common Stock as shall equal the result obtained
by dividing the Purchase  Price (as so adjusted) by 50% of the current per share

                                       16

                                     - 19 -

<PAGE>

market price of the Common Stock  (determined  pursuant to Section 11(d) hereof)
on the date of such Flip-In Event;  provided,  however,  that the Purchase Price
(as so  adjusted)  and the number of shares of Common Stock so  receivable  upon
exercise of a Right shall,  following the Flip-In  Event,  be subject to further
adjustment   as   appropriate   in   accordance   with  Section   11(f)  hereof.
Notwithstanding  anything in this Agreement to the contrary,  however,  from and
after the  Flip-In  Event,  any Rights  that are  beneficially  owned by (x) any
Acquiring Person (or any Affiliate or Associate of any Acquiring Person),  (y) a
transferee of any  Acquiring  Person (or any such  Affiliate or  Associate)  who
becomes  a  transferee  after  the  Flip-In  Event  or (z) a  transferee  of any
Acquiring  Person (or any such  Affiliate or Associate)  who became a transferee
prior to or  concurrently  with the  Flip-In  Event  pursuant  to  either  (I) a
transfer from the Acquiring Person to holders of its equity securities or to any
Person with whom it has any continuing  agreement,  arrangement or understanding
regarding the transferred Rights or (II) a transfer which the Board of Directors
has  determined is part of a plan,  arrangement or  understanding  which has the
purpose or effect of avoiding the provisions of this  paragraph,  and subsequent
transferees  of such Persons,  shall be void without any further  action and any
holder of such Rights shall thereafter have no rights whatsoever with respect to
such Rights under any  provision of this  Agreement.  The Company  shall use all
reasonable  efforts to ensure that the provisions of this Section  11(a)(ii) are
complied with,  but shall have no liability to any holder of Right  Certificates
or other  Person  as a result of its  failure  to make any  determinations  with
respect to an Acquiring  Person or its  Affiliates,  Associates  or  transferees
hereunder.  From and after the  Flip-In  Event,  no Right  Certificate  shall be
issued pursuant to Section 3 or Section 6 hereof that represents Rights that are
or have become void pursuant to the provisions of this paragraph,  and any Right
Certificate  delivered  to the Rights Agent that  represents  Rights that are or
have become void pursuant to the provisions of this paragraph shall be canceled.
From and after the occurrence of an event specified in Section 13(a) hereof, any
Rights  that  theretofore  have  not been  exercised  pursuant  to this  Section
11(a)(ii) shall thereafter be exercisable only in accordance with Section 13 and
not pursuant to this Section 11(a)(ii).

                  (iii) The Company may at its option  substitute for a share of
Common  Stock  issuable  upon the  exercise  of  Rights in  accordance  with the
foregoing  subparagraph  (ii) a number of shares of Preferred  Stock or fraction
thereof  such that the current per share  market price of one share of Preferred
Stock  multiplied  by such  number or fraction is equal to the current per share
market price of one share of Common Stock.  In the event that there shall not be
sufficient  shares of Common Stock issued but not  outstanding or authorized but
unissued  to permit the  exercise in full of the Rights in  accordance  with the

                                       17

                                     - 20 -

<PAGE>

foregoing  subparagraph  (ii),  the  Board of  Directors  shall,  to the  extent
permitted by applicable law and any material  agreements then in effect to which
the Company is a party (A) determine  the excess (such excess,  the "Spread") of
(1) the value of the shares of Common  Stock  issuable  upon the  exercise  of a
Right in accordance with the foregoing  subparagraph  (ii) (the "Current Value")
over (2) the  Purchase  Price (as  adjusted  in  accordance  with the  foregoing
subparagraph  (ii)), and (B) with respect to each Right (other than Rights which
have become void pursuant to the  foregoing  subparagraph  (ii)),  make adequate
provision to  substitute  for the shares of Common Stock  issuable in accordance
with the foregoing  subparagraph  (ii) upon exercise of the Right and payment of
the  Purchase  Price (as  adjusted in  accordance  therewith),  (1) cash,  (2) a
reduction in such Purchase Price,  (3) shares of Preferred Stock or other equity
securities of the Company (including, without limitation, shares or fractions of
shares of  preferred  stock  which,  by virtue of having  dividend,  voting  and
liquidation  rights  substantially  comparable  to those of the shares of Common
Stock, are deemed in good faith by the Board of Directors to have  substantially
the same value as the shares of Common Stock (such shares of Preferred Stock and
shares or fractions of shares of preferred stock are hereinafter  referred to as
"Common  Stock  Equivalents"),  (4) debt  securities  of the Company,  (5) other
assets,  or (6) any  combination  of the foregoing,  having a value which,  when
added to the value of the shares of Common  Stock  issued upon  exercise of such
Right, shall have an aggregate value equal to the Current Value (less the amount
of any reduction in such Purchase  Price),  where such aggregate  value has been
determined by the Board of Directors upon the advice of a nationally  recognized
investment  banking  firm  selected  in good  faith by the  Board of  Directors;
provided,  however,  that if the Company  shall not make  adequate  provision to
deliver value pursuant to clause (B) above within thirty (30) days following the
Flip-In Event (the "Section 11(a) (ii) Trigger Date"), then the Company shall be
obligated to deliver, to the extent permitted by applicable law and any material
agreements  then in effect to which the Company is a party,  upon the  surrender
for exercise of a Right and without  requiring  payment of such Purchase  Price,
shares of Common Stock (to the extent available),  and then, if necessary,  such
number or fractions of shares of Preferred  Stock (to the extent  available) and
then, if necessary, cash, which shares and/or cash have an aggregate value equal
to the  Spread.  If, upon the  occurrence  of the  Flip-In  Event,  the Board of
Directors  shall  determine  in good  faith  that it is likely  that  sufficient
additional shares of Common Stock could be authorized for issuance upon exercise
in full of the Rights,  then,  if the Board of Directors  so elects,  the thirty
(30) day period set forth above may be extended to the extent necessary, but not
more than ninety (90) days after the Section  11(a) (ii) Trigger  Date, in order
that the Company may seek  stockholder  approval for the  authorization  of such

                                       18

                                     - 21 -

<PAGE>

additional shares (such thirty (30) day period, as it may be extended, is herein
called the  "Substitution  Period").  To the extent that the Company  determines
that some action need be taken  pursuant to the second and/or third  sentence of
this  Section  11(a)(iii),  the  Company (x) shall  provide,  subject to Section
11(a)(ii) hereof and the last sentence of this Section 11(a)(iii)  hereof,  that
such action shall apply uniformly to all outstanding  Rights and (y) may suspend
the exercisability of the Rights until the expiration of the Substitution Period
in order to seek any  authorization  of  additional  shares and/or to decide the
appropriate form of distribution to be made pursuant to such second sentence and
to determine the value thereof. In the event of any such suspension, the Company
shall issue a public announcement  stating that the exercisability of the Rights
has been temporarily suspended, as well as a public announcement at such time as
the suspension is no longer in effect. For purposes of this Section  11(a)(iii),
the value of the shares of Common  Stock shall be the  current per share  market
price (as  determined  pursuant to Section  11(d)(i))  on the Section  11(a)(ii)
Trigger  Date  and the per  share  or  fractional  value  of any  "Common  Stock
Equivalent"  shall be deemed to equal the current per share  market price of the
Common  Stock.  The Board of  Directors  of the  Company  may,  but shall not be
required to,  establish  procedures  to allocate the right to receive  shares of
Common Stock upon the exercise of the Rights among holders of Rights pursuant to
this Section 11(a)(iii).

                  (b) In case  the  Company  shall  fix a  record  date  for the
issuance  of rights,  options or  warrants  to all  holders of  Preferred  Stock
entitling them (for a period  expiring within 45 calendar days after such record
date) to subscribe  for or purchase  Preferred  Stock (or shares having the same
rights, privileges and preferences as the Preferred Stock ("equivalent preferred
shares")) or securities convertible into Preferred Stock or equivalent preferred
shares at a price per share of Preferred  Stock or equivalent  preferred  shares
(or having a conversion  price per share, if a security  convertible into shares
of Preferred  Stock or equivalent  preferred  shares) less than the then current
per share market price of the Preferred  Stock  (determined  pursuant to Section
11(d) hereof) on such record date, the Purchase Price to be in effect after such
record date shall be  determined  by  multiplying  the Purchase  Price in effect
immediately  prior to such  record date by a fraction,  the  numerator  of which
shall be the number of shares of Preferred Stock and equivalent preferred shares
outstanding on such record date plus the number of shares of Preferred Stock and
equivalent  preferred  shares which the  aggregate  offering  price of the total
number of shares of Preferred Stock 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 shares of Preferred  Stock and

                                       19

                                     - 22 -

<PAGE>

equivalent  preferred shares  outstanding on such record date plus the number of
additional  shares of Preferred Stock 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. Shares of Preferred Stock and equivalent  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 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  Stock  (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 Stock) 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 Stock (determined  pursuant
to Section  11(d)  hereof) 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 share of Preferred
Stock, and the denominator of which shall be such current per share market price
(determined pursuant to Section 11(d) hereof) of the Preferred Stock;  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  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.

                                       20

                                     - 23 -
<PAGE>

                  (d)(i) Except as otherwise provided herein, 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  by the  principal
consolidated  transaction  reporting system with respect to securities listed or
admitted to trading on the New York Stock  Exchange  or, if the  Security is not
listed or admitted to trading on the New York Stock Exchange, as reported in the
principal  consolidated  transaction reporting system with respect to securities
listed on the principal  national  securities  exchange on which the Security is
listed or admitted  to trading or, if the  Security is not listed or admitted to
trading on any national securities exchange, the last 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  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,  if the
Preferred Stock is publicly traded,  the "current per share market price" of the
Preferred  Stock shall be determined in accordance  with the method set forth in
Section  11(d)(i).  If the Preferred Stock is not publicly traded but the Common
Stock is publicly traded,  the "current per share market price" of the Preferred
Stock shall be  conclusively  deemed to be the current per share market price of
the Common Stock as determined  pursuant to Section  11(d)(i)  multiplied by the
then  applicable  Adjustment  Number (as defined in and determined in accordance
with the  Certificate of Designation  for the Preferred  Stock).  If neither the
Common  Stock nor the  Preferred  Stock is publicly  traded,  "current per share

                                       21

                                     - 24 -

<PAGE>

market price" shall mean the fair value per share 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.

                  (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
hundred-thousandth  of a share of Preferred Stock or one-hundredth of a share of
Common Stock or 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 Expiration Date.

                  (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 the Preferred
Stock,  thereafter  the  Purchase  Price and the number of such other  shares so
receivable  upon exercise of a 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  Stock  contained in Sections  11(a),
11(b),  11(c),  11(e),  11(h),  11(i) and 11(m) hereof,  as applicable,  and the
provisions  of Sections 7, 9, 10, 13 and 14 hereof with respect to the Preferred
Stock shall apply on like terms to any such other shares.

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

                  (h) 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

                                       22

                                     - 25 -

<PAGE>

evidence the right to purchase,  at the adjusted  Purchase Price, that number of
one one-thousandths of a share of Preferred Stock (calculated to the nearest one
hundred-thousandth  of a share of Preferred  Stock)  obtained by (i) multiplying
(x) the number of one  one-thousandths  of a share purchasable upon the exercise
of a Right  immediately  prior to such  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  pursuant to Sections 11(b) or 11(c) hereof to
adjust the number of Rights, in substitution for any adjustment in the number of
one  one-thousandths of a share of Preferred Stock purchasable upon the exercise
of a Right.  Each of the Rights  outstanding after such adjustment of the number
of Rights shall be exercisable for the number of one  one-thousandths of a share
of Preferred Stock for which a Right was exercisable  immediately  prior to such
adjustment.  Each Right held of record prior to such adjustment of the number of
Rights  shall  become  that  number  of  Rights   (calculated   to  the  nearest
one-hundredth)  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  may,  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.

                  (j)  Irrespective  of any adjustment or change in the Purchase
Price  or the  number  of one  one-thousandths  of a share  of  Preferred  Stock

                                       23

                                     - 26 -

<PAGE>

issuable upon the exercise of a Right,  the Right  Certificates  theretofore and
thereafter  issued may continue to express the Purchase  Price and the number of
one  one-thousandths  of a share of Preferred  Stock 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 the then par value, if any, of the fraction of
Preferred  Stock or other shares of capital  stock  issuable  upon exercise of a
Right,  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  shares of  Preferred  Stock or other such
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  issuing to the holder of any Right  exercised  after such record date the
Preferred  Stock and other capital  stock or securities of the Company,  if any,
issuable upon such exercise over and above the Preferred Stock and other capital
stock or securities of the Company,  if any,  issuable upon such exercise on the
basis of the  Purchase  Price in  effect  prior  to such  adjustment;  provided,
however,  that the  Company  shall  deliver  to such  holder a due bill or other
appropriate instrument evidencing such holder's right to receive such additional
shares 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  adjustments 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
Stock,  issuance  wholly for cash of any shares of Preferred  Stock at less than
the  current  market  price,  issuance  wholly  for cash of  Preferred  Stock or
securities  which  by their  terms  are  convertible  into or  exchangeable  for
Preferred  Stock,  dividends on Preferred  Stock  payable in shares of Preferred
Stock or issuance  of rights,  options or warrants  referred to  hereinabove  in
Section 11(b),  hereafter made by the Company to holders of its Preferred  Stock
shall not be taxable to such stockholders.

                  (n)    Anything   in   this    Agreement   to   the   contrary
notwithstanding,  in the event  that at any time  after the date of this  Rights
Agreement and prior to the Distribution  Date, the Company shall (i) declare and
pay any  dividend on the Common  Stock  payable in Common Stock or (ii) effect a
subdivision,   combination   or   consolidation   of  the   Common   Stock   (by

                                       24

                                     - 27 -

<PAGE>

reclassification  or otherwise  than by payment of a dividend  payable in Common
Stock) into a greater or lesser number of shares of Common Stock,  then, in each
such case, the number of Rights  associated with each share of Common Stock then
outstanding,  or  issued  or  delivered  thereafter,  shall  be  proportionately
adjusted so that the number of Rights  thereafter  associated with each share of
Common  Stock  following  any such  event  shall  equal the result  obtained  by
multiplying  the number of Rights  associated  with each  share of Common  Stock
immediately  prior to such event by a fraction  the  numerator of which shall be
the total number of shares of Common Stock outstanding  immediately prior to the
occurrence of the event and the  denominator  of which shall be the total number
of shares of Common Stock  outstanding  immediately  following the occurrence of
such event.

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

         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  Stock and the
Preferred Stock 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 (if
so required under Section 25 hereof).  The Rights Agent shall be fully protected
in relying on any such certificate and on any adjustment  therein  contained and
shall not be deemed to have knowledge of any such adjustment unless and until it
shall have received such certificate.

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

                  (a) In the event,  directly or  indirectly,  at any time after
the Flip-In Event (i) the Company shall consolidate with or shall merge into any
other  Person,  (ii) any Person  shall  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 Stock shall be changed
into or exchanged  for stock or other  securities of any other Person (or of the
Company)  or cash or any other  property,  or (iii) the  Company  shall  sell or
otherwise  transfer (or one or more of its Subsidiaries  shall sell or otherwise
transfer), in one or more transactions,  assets or earning power aggregating 50%

                                       25

                                     - 28 -

<PAGE>

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
wholly owned  Subsidiaries  of the Company),  then upon the first  occurrence of
such event,  proper  provision shall be made so that: (A) each holder of a Right
(other than Rights which have become void pursuant to Section  11(a)(ii) hereof)
shall  thereafter  have the right to receive,  upon the exercise  thereof at the
Purchase Price (as  theretofore  adjusted in accordance  with Section  11(a)(ii)
hereof), in accordance with the terms of this Agreement and in lieu of shares of
Preferred  Stock  or  Common  Stock  of the  Company,  such  number  of  validly
authorized and issued, fully paid,  non-assessable and freely tradable shares of
Common Stock of the Principal Party (as such term is hereinafter  defined),  not
subject to any liens,  encumbrances,  rights of first  refusal or other  adverse
claims,  as shall equal the result  obtained by dividing the Purchase  Price (as
theretofore  adjusted in accordance with Section 11(a)(ii) hereof) by 50% of the
current  per share  market  price of the Common  Stock of such  Principal  Party
(determined  pursuant to Section  11(d) hereof) on the date of  consummation  of
such  consolidation,  merger,  sale or  transfer;  provided,  however,  that the
Purchase Price (as  theretofore  adjusted in accordance  with Section  11(a)(ii)
hereof)  and the  number of shares of Common  Stock of such  Principal  Party so
receivable  upon  exercise of a Right shall be subject to further  adjustment as
appropriate  in  accordance  with  Section  11(f)  hereof to reflect  any events
occurring  in respect  of the Common  Stock of such  Principal  Party  after the
occurrence of such consolidation,  merger, sale or transfer;  (B) such Principal
Party  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  Rights  Agreement;  (C)  the  term  "Company"  shall
thereafter be deemed to refer to such  Principal  Party;  and (D) such Principal
Party shall take such steps (including, but not limited to, the reservation of a
sufficient  number of its shares of Common  Stock in  accordance  with Section 9
hereof) in connection with such  consummation of any such  transaction as may be
necessary to assure that the provisions  hereof shall  thereafter be applicable,
as nearly as  reasonably  may be, in relation to the shares of its Common  Stock
thereafter deliverable upon the exercise of the Rights;  provided that, upon the
subsequent  occurrence of any consolidation,  merger, sale or transfer of assets
or other  extraordinary  transaction  in respect of such Principal  Party,  each
holder of a Right shall  thereupon  be entitled to receive,  upon  exercise of a
Right and payment of the Purchase Price as provided in this Section 13(a),  such
cash, shares,  rights,  warrants and other property which such holder would have
been entitled to receive had such holder, at the time of such transaction, owned
the Common Stock of the Principal Party  receivable upon the exercise of a Right
pursuant to this Section 13(a),  and such Principal  Party shall take such steps

                                       26

                                     - 29 -

<PAGE>

(including,  but not  limited  to,  reservation  of  shares  of stock) as may be
necessary to permit the subsequent exercise of the Rights in accordance with the
terms hereof for such cash, shares, rights, warrants and other property.

                  (b)      "Principal Party" shall mean:

                           (i) in  the  case of any  transaction  described  in 
(i) or (ii) of the first  sentence of Section 13(a) hereof:  (A) the Person that
is the  issuer  of the  securities  into  which the  shares of Common  Stock are
converted  in such merger or  consolidation,  or, if there is more than one such
issuer,  the  issuer  the  shares of  Common  Stock of which  have the  greatest
aggregate  market value of shares  outstanding,  or (B) if no securities  are so
issued,  (x) the Person that is the other  party to the  merger,  if such Person
survives said merger,  or, if there is more than one such Person, the Person the
shares of Common  Stock of which have the  greatest  aggregate  market  value of
shares  outstanding  or (y) if the Person  that is the other party to the merger
does not survive the merger,  the Person that does survive the merger (including
the Company if it survives) or (z) the Person resulting from the  consolidation;
and

                           (ii) in the  case of any  transaction  described  in
(iii) of the first  sentence  in Section  13(a)  hereof,  the Person that is the
party receiving the greatest portion of the assets or earning power  transferred
pursuant to such transaction or transactions, or, if each Person that is a party
to such  transaction or transactions  receives the same portion of the assets or
earning power so transferred or if the Person  receiving the greatest portion of
the assets or earning power cannot be  determined,  whichever of such Persons is
the issuer of Common Stock having the greatest  aggregate market value of shares
outstanding;

provided,  however,  that in any such case  described  in the  foregoing  clause
(b)(i) or (b)(ii), if the Common Stock of such Person is not at such time or has
not been  continuously  over the  preceding  12-month  period  registered  under
Section 12 of the Exchange  Act, then (1) if such Person is a direct or indirect
Subsidiary  of  another  Person  the  Common  Stock  of which is and has been so
registered,  the term "Principal Party" shall refer to such other Person, or (2)
if such Person is a Subsidiary, directly or indirectly, of more than one Person,
the  Common  Stock  of all of  which  is and has  been so  registered,  the term
"Principal  Party"  shall refer to  whichever  of such  Persons is the issuer of
Common Stock having the greatest  aggregate market value of shares  outstanding,
or (3) if such  Person is owned,  directly  or  indirectly,  by a joint  venture
formed by two or more Persons that are not owned, directly or indirectly, by the
same  Person,  the rules set forth in clauses  (1) and (2) above  shall apply to

                                       27

                                     - 30 -
<PAGE>

each of the owners  having an interest in the venture as if the Person  owned by
the joint venture was a Subsidiary of both or all of such joint  venturers,  and
the Principal  Party in each such case shall bear the  obligations  set forth in
this  Section 13 in the same ratio as its  interest in such Person  bears to the
total of such interests.

                  (c)  The  Company  shall  not  consummate  any  consolidation,
merger,  sale or  transfer  referred to in Section  13(a)  hereof  unless  prior
thereto the Company and the Principal Party involved therein shall have executed
and delivered to the Rights Agent an agreement  confirming that the requirements
of Sections 13(a) and (b) hereof shall promptly be performed in accordance  with
their  terms and that such  consolidation,  merger,  sale or  transfer of assets
shall not result in a default by the Principal Party under this Agreement as the
same shall have been assumed by the Principal  Party  pursuant to Sections 13(a)
and (b) hereof and providing  that, as soon as practicable  after executing such
agreement pursuant to this Section 13, the Principal Party will:

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

                           (ii) use its best efforts, if the Common Stock of the
Principal Party shall be listed or admitted to trading on a national  securities
exchange,  to list or admit to trading (or  continue  the listing of) the Rights
and the securities  purchasable  upon exercise of the Rights on such  securities
exchange,  or, if the Common Stock of the Principal Party shall not be listed or
admitted to trading on a national securities  exchange,  to cause the Rights and
the  securities  receivable  upon  exercise of the Rights to be  authorized  for
quotation on NASDAQ or on such other system then in use;

                           (iii)  deliver  to  holders  of the Rights historical
financial  statements for the Principal  Party which comply in all respects with
the  requirements  for registration on Form 10 (or any successor form) under the
Exchange Act; and
                           (iv) obtain waivers of any rights of first refusal or
preemptive  rights in respect of the Common Stock of the Principal Party subject
to purchase upon exercise of outstanding Rights.

                                       28

                                     - 31 -

<PAGE>

                  (d) In case the  Principal  Party has  provision in any of its
authorized securities or in its certificate of incorporation or by-laws or other
instrument  governing  its corporate  affairs,  which  provision  would have the
effect of (i) causing  such  Principal  Party to issue (other than to holders of
Rights pursuant to this Section 13), in connection with, or as a consequence of,
the  consummation  of a  transaction  referred to in this Section 13,  shares of
Common Stock or Common Stock  Equivalents of such  Principal  Party at less than
the then current market price per share thereof (determined  pursuant to Section
11(d) hereof) or securities  exercisable for, or convertible  into, Common Stock
or  Common  Stock  Equivalents  of such  Principal  Party at less than such then
current market price, or (ii) providing for any special payment,  tax or similar
provision in connection  with the issuance of the Common Stock of such Principal
Party pursuant to the provisions of Section 13, then, in such event, the Company
hereby agrees with each holder of Rights that it shall not  consummate  any such
transaction unless prior thereto the Company and such Principal Party shall have
executed and delivered to the Rights Agent a  supplemental  agreement  providing
that the provision in question of such Principal Party shall have been canceled,
waived or amended, or that the authorized  securities shall be redeemed, so that
the  applicable  provision  will  have no  effect in  connection  with,  or as a
consequence of, the consummation of the proposed transaction.

                  (e) The Company covenants and agrees that it shall not, at any
time after the Flip-In Event,  enter into any  transaction of the type described
in clauses (i) through  (iii) of Section  13(a)  hereof if (i) at the time of or
immediately  after  such   consolidation,   merger,   sale,  transfer  or  other
transaction  there are any rights,  warrants or other  instruments or securities
outstanding  or  agreements  in effect  which  would  substantially  diminish or
otherwise  eliminate  the benefits  intended to be afforded by the Rights,  (ii)
prior to,  simultaneously with or immediately after such consolidation,  merger,
sale,  transfer  or  other  transaction,  the  stockholders  of the  Person  who
constitutes,  or would  constitute,  the Principal Party for purposes of Section
13(b) hereof shall have received a distribution  of Rights  previously  owned by
such Person or any of its  Affiliates  or Associates or (iii) the form or nature
of   organization   of  the  Principal   Party  would   preclude  or  limit  the
exercisability of the Rights.

         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
(except prior to the Distribution Date in accordance with Section 11(n) hereof).
In lieu of such fractional Rights, there shall be paid to the registered holders

                                       29

                                     - 32 -

<PAGE>

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 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  Stock  (other than  fractions  which are  integral  multiples  of one
one-thousandths  of a share of Preferred  Stock) or to  distribute  certificates
which evidence  fractional shares of Preferred Stock (other than fractions which
are integral  multiples of one  one-thousandths  of a share of Preferred  Stock)
upon the  exercise or exchange of Rights.  Interests  in  fractions of Preferred
Stock in integral multiples of one one-thousandths of a share of Preferred Stock
may, at the  election of the  Company,  be  evidenced  by  depositary  receipts,
pursuant to an  appropriate  agreement  between  the  Company  and a  depositary
selected by it; provided,  that such agreement shall provide that the holders of
such depositary  receipts shall have all the rights,  privileges and preferences
to  which  they  are  entitled  as  beneficial  owners  of the  Preferred  Stock
represented  by  such  depositary  receipts.  In lieu of  fractional  shares  of
Preferred  Stock that are not  integral  multiples of one  one-thousandths  of a
share of Preferred  Stock,  the Company shall pay to the  registered  holders of
Right  Certificates at the time such Rights are exercised or exchanged as herein
provided  an amount in cash equal to the same  fraction  of the  current  market

                                       30

                                     - 33 -

<PAGE>

value of a whole share of Preferred  Stock (as  determined  in  accordance  with
Section 14(a) hereof) for the Trading Day immediately  prior to the date of such
exercise or exchange.

                  (c) The Company  shall not be required to issue  fractions  of
shares of Common Stock or to distribute  certificates which evidence  fractional
shares of Common Stock upon the exercise or exchange of Rights.  In lieu of such
fractional  shares of Common  Stock,  the  Company  shall pay to the  registered
holders of the Right Certificates with regard to which such fractional shares of
Common  Stock  would  otherwise  be issuable an amount in cash equal to the same
fraction  of the  current  market  value of a whole  share of  Common  Stock (as
determined  in  accordance  with  Section  14(a)  hereof)  for the  Trading  Day
immediately prior to the date of such exercise or exchange.

                  (d) 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 or exchange 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 Stock);  and any registered holder of any Right Certificate (or, prior to
the Distribution  Date, of the Common Stock),  without the consent of the Rights
Agent  or of the  holder  of any  other  Right  Certificate  (or,  prior  to the
Distribution  Date,  of the  Common  Stock),  on his own  behalf and for his own
benefit,  may  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 (or, prior to
the Distribution  Date, such Common Stock) in the manner provided therein 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 Stock;

                                       31

                                     - 34 -

<PAGE>

                  (b) after the  Distribution  Date, the Right  Certificates are
transferable  only on the registry  books of the Rights Agent if  surrendered at
the office or agency of the  Rights  Agent  designated  for such  purpose,  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 Common Stock certificate) is registered as the absolute owner thereof and of
the Rights  evidenced  thereby  (notwithstanding  any  notations of ownership or
writing on the Right Certificates or the Common Stock certificate made by anyone
other than the Company or the Rights  Agent) for all  purposes  whatsoever,  and
neither the Company nor the Rights  Agent 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  Stock or any
other  securities  of the  Company  which  may at any  time be  issuable  on the
exercise or  exchange  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 this Agreement),  or to
receive  dividends  or  subscription  rights,  or  otherwise,  until the  Rights
evidenced by such Right  Certificate  shall have been  exercised or exchanged in
accordance with the provisions hereof.

         Section 18.  Concerning the Rights Agent.

                  (a) The Company  agrees to pay to the Rights Agent  reasonable
compensation  for all services  rendered by it hereunder and, from time to time,
on demand of the Rights  Agent,  its  reasonable  expenses  and counsel fees and
other  disbursements  incurred  in the  administration  and  execution  of  this
Agreement and the exercise and performance of its duties hereunder.  The Company
also agrees to indemnify the Rights Agent for, and to hold it harmless  against,
any loss,  liability  or  expense,  incurred  without  negligence,  bad faith or
willful misconduct on the part of the Rights Agent, for anything done or omitted
by the Rights Agent in connection with the acceptance and administration of this
Agreement,  including  the costs and expenses of defending  against any claim of
liability arising therefrom,  directly or indirectly. In no case will the Rights

                                       32

                                     - 35 -

<PAGE>

Agent be liable for  special,  indirect,  incidental  or  consequential  loss or
damages of any kind whatsoever, even if the Rights Agent has been advised of the
possibility of such damages.

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

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

                  (a)  Any  corporation  into  which  the  Rights  Agent  or any
successor  Rights Agent may be merged or with which it may be  consolidated,  or
any corporation  resulting from any merger or  consolidation to which the Rights
Agent  or any  successor  Rights  Agent  shall be a  party,  or any  corporation
succeeding to the stock  transfer or corporate  trust powers of the Rights Agent
or any successor Rights Agent,  shall be the successor to the Rights Agent under
this  Agreement  without the execution or filing of any paper or any further act
on the part of any of the parties hereto;  provided, 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.

                  (b) 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

                                       33

                                     - 36 -

<PAGE>

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.

         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 the Chief  Executive  Officer  and 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.

                  (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

                                       34

                                     - 37 -

<PAGE>

adjustment in the terms of the Rights provided for in Sections 3, 11, 13, 23 and
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 receipt of a certificate  furnished pursuant to Section
12, describing such change or adjustment);  nor shall it by any act hereunder be
deemed  to make  any  representation  or  warranty  as to the  authorization  or
reservation  of any shares of Preferred  Stock or other  securities to be issued
pursuant to this Agreement or any Right  Certificate or as to whether any shares
of Preferred Stock or other securities will, when issued, be validly  authorized
and issued, fully paid and nonassessable.

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

                  (g) The Rights  Agent is hereby  authorized  and  directed  to
accept instructions with respect to the performance of its duties hereunder from
any  person  reasonably  believed  by the  Rights  Agent to be one of the  Chief
Executive Officer or the Secretary of the Company, and to apply to such officers
for advice or instructions  in connection  with its duties,  and it shall not be
liable for any action taken or suffered by it in good faith in  accordance  with
instructions  of any such officer or for any delay in acting  while  waiting for
those instructions. Any application by the Rights Agent for written instructions
from the Company  may, at the option of the Rights  Agent,  set forth in writing
any  action  proposed  to be taken or omitted  by the  Rights  Agent  under this
Agreement  and the date on and/or after which such action shall be taken or such
omission shall be effective. The Rights Agent shall not be liable for any action
taken by, or  omission  of,  the  Rights  Agent in  accordance  with a  proposal
included  in any  such  application  on or  after  the  date  specified  in such
application (which date shall not be less than five Business Days after the date
any officer of the Company actually  receives such  application  unless any such
officer shall have  consented in writing to an earlier  date)  unless,  prior to
taking any such action (or the effective  date in the case of an omission),  the
Rights  Agent  shall have  received  written  instructions  in  response to such
application specifying the action to be taken or omitted.

                  (h) The Rights Agent and any stockholder, director, officer or
employee of the Rights Agent may buy, sell or deal in any of the Rights or other
securities of the Company or become pecuniarily interested in any transaction in
which the  Company  may be  interested,  or  contract  with or lend money to the

                                       35

                                     - 38 -

<PAGE>

Company or otherwise  act as fully and freely as though it were not Rights Agent
under this Agreement. Nothing herein shall preclude the Rights Agent from acting
in any other capacity for the Company or for any other legal entity.

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

                  (j) If, with respect to any Rights Certificate  surrendered to
the Rights Agent for exercise or transfer, the certificate contained in the form
of  assignment  or the form of  election  to  purchase  set forth on the reverse
thereof, as the case may be, has not been completed to certify the holder is not
an Acquiring  Person (or an Affiliate  or Associate  thereof),  the Rights Agent
shall not take any further  action with  respect to such  requested  exercise or
transfer without first consulting with the Company.

         Section 21. Change of Rights  Agent.  The Rights Agent or any successor
Rights Agent may resign and be discharged  from its duties under this  Agreement
upon 30 days' notice in writing mailed to the Company and to each transfer agent
of the Common Stock or Preferred  Stock by  registered or certified  mail,  and,
following the  Distribution  Date, 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 Stock or Preferred Stock by registered or certified mail, and,  following
the Distribution  Date, 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 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,  or an affiliate of
such  corporation,  organized  and doing  business  under the laws of the United
States  or the  laws of any  state  of the  United  States  or the  District  of

                                       36

                                     - 39 -

<PAGE>

Columbia,  in good  standing,  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 that purpose. Not later than the effective
date of any such  appointment  the Company shall file notice  thereof in writing
with the predecessor Rights Agent and each transfer agent of the Common Stock or
Preferred Stock, and,  following the Distribution Date, 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.

         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 forms
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.  In addition,  in connection
with the issuance or sale of Common Stock  following the  Distribution  Date and
prior to the  Expiration  Date, the Company may with respect to shares of Common
Stock so issued or sold  pursuant  to (i) the  exercise of stock  options,  (ii)
under any employee plan or arrangement,  (iii) upon the exercise,  conversion or
exchange  of  securities,  notes or  debentures  issued by the Company or (iv) a
contractual  obligation  of the  Company,  in each  case  existing  prior to the
Distribution Date, issue Rights Certificates representing the appropriate number
of Rights in connection with such issuance or sale.

         Section 23.  Redemption.

                  (a) The Board of  Directors  of the  Company  may, at any time
prior  to the  Flip-In  Event,  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 (the redemption price being hereinafter referred
to as the  "Redemption  Price");  provided,  however,  there must be  Continuing

                                       37

                                     - 40 -

<PAGE>

Directors then in office and such authorization shall require the concurrence of
a majority of such  Continuing  Directors.  The  redemption of the Rights may be
made effective at such time, on such basis and with such conditions as the Board
of  Directors  and  the  majority  of such  Continuing  Directors  may in  their
discretion  establish.  The Redemption Price shall be payable,  at the option of
the Company,  in shares of Common  Stock,  based on the current per share market
price  thereof (as  determined  pursuant to Section 11(d) hereof) at the time of
redemption  or  cash,  as the  Board  of  Directors  and  the  majority  of such
Continuing Directors shall determine.

                  (b) Immediately  upon the action of the Board of Directors and
the majority of such Continuing  Directors ordering the redemption of the Rights
pursuant to paragraph (a) of this Section 23 (or at such later time as the Board
of Directors  may  establish  for the  effectiveness  of such  redemption),  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  ordering the redemption of the Rights (or such
later time as the Board of Directors may establish for the effectiveness of such
redemption), 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 Stock.  Any notice which is
mailed in the manner herein  provided shall be deemed given,  whether or not the
holder  receives  the  notice.  Each such notice of  redemption  shall state the
method by which the payment of the Redemption Price will be made.

         Section 24.  Exchange.

                  (a) The Company  may, at its option,  by majority  vote of the
Board of Directors and a majority vote of the Continuing Directors,  at any time
after  the  Flip-In  Event,  exchange  all or part of the then  outstanding  and
exercisable  Rights  (which  shall not  include  Rights  that have  become  void
pursuant to the provisions of Section  11(a)(ii)  hereof) for Common Stock at an
exchange ratio of one share of Common Stock per Right, appropriately adjusted to
reflect any stock split, stock dividend or similar  transaction  occurring after
the date  hereof  (such  amount per Right 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 an Acquiring  Person
shall have become the Beneficial Owner of shares of Common Stock aggregating 50%

                                       38

                                     - 41 -

<PAGE>

or more of the  shares  of Common  Stock  then  outstanding.  From and after the
occurrence  of an event  specified  in Section  13(a)  hereof,  any Rights  that
theretofore  have  not been  exchanged  pursuant  to this  Section  24(a)  shall
thereafter  be  exercisable  only in  accordance  with Section 13 and may not be
exchanged pursuant to this Section 24(a). The exchange of the Rights may be made
effective at such time,  on such basis and with such  conditions as the Board of
Directors and the majority of such Continuing  Directors may in their discretion
establish.

                  (b) Immediately  upon the  effectiveness  of 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 shares
of  Common  Stock  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
shall  promptly  mail a notice of any such exchange to all of the holders of the
Rights so  exchanged  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
shares of Common  Stock 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.

                  (c) The  Company  may at its option  substitute,  and,  in the
event that there shall not be  sufficient  shares of Common Stock issued but not
outstanding  or  authorized  but  unissued  to permit an  exchange of Rights for
Common Stock as  contemplated  in  accordance  with this Section 24, the Company
shall substitute to the extent of such  insufficiency,  for each share of Common
Stock that would  otherwise be issuable  upon  exchange of a Right,  a number of
shares of Preferred Stock or fraction thereof (or equivalent  preferred  shares,
as such term is defined in Section 11(b)) such that the current per share market
price  (determined  pursuant to Section  11(d) hereof) of one share of Preferred
Stock (or equivalent  preferred share)  multiplied by such number or fraction is
equal to the  current  per  share  market  price of one  share of  Common  Stock
(determined pursuant to Section 11(d) hereof) as of the date of such exchange.

                                       39

                                     - 42 -

<PAGE>

         Section 25.  Notice of Certain Events.

                  (a) In case the Company shall at any time after the earlier of
the  Distribution  Date or the Stock  Acquisition  Date  propose  (i) to pay any
dividend  payable in stock of any class to the holders of its Preferred Stock or
to make any other distribution to the holders of its Preferred Stock (other than
a  regular  quarterly  cash  dividend),  (ii) to  offer  to the  holders  of its
Preferred  Stock  rights  or  warrants  to  subscribe  for  or to  purchase  any
additional  shares  of  Preferred  Stock or  shares of stock of any class or any
other securities, rights or options, (iii) to effect any reclassification of its
Preferred Stock (other than a reclassification involving only the subdivision or
combination of outstanding  Preferred  Stock),  (iv) to effect the  liquidation,
dissolution  or winding up of the  Company,  or (v) to pay any  dividend  on the
Common Stock payable in Common Stock or to effect a subdivision,  combination or
consolidation  of the Common Stock (by  reclassification  or  otherwise  than by
payment of  dividends in Common  Stock),  then,  in each such case,  the Company
shall give to each holder of a 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  liquidation,  dissolution  or  winding up is to take
place and the date of  participation  therein by the holders of the Common Stock
and/or  Preferred  Stock, if any such date is to be fixed, and such notice shall
be so given in the case of any  action  covered  by clause  (i) or (ii) above at
least 10 days prior to the record date for determining  holders of the Preferred
Stock 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  Stock  and/or
Preferred Stock, whichever shall be the earlier.

                  (b) In case  any  event  described  in  Section  11(a)(ii)  or
Section 13 shall occur then the Company shall as soon as practicable  thereafter
give to each  holder  of a  Right  Certificate  (or if  occurring  prior  to the
Distribution  Date, the holders of the Common Stock) 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) and Section 13 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:

                                       40

                                     - 43 -

<PAGE>

                  Data Transmission Network Corporation
                  9110 West Dodge Road, Suite 200
                  Omaha, Nebraska 68114
                  Attention: 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,  postage prepaid,  addressed (until another address
is filed in writing with the Company) as follows:

                  First National Bank of Omaha
                  One First National Center
                  16th and Dodge Streets
                  Omaha, Nebraska  68102
                  Attn:  Trust Department

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.  Except as  provided in the
penultimate  sentence  of this  Section  27,  for so long as the Rights are then
redeemable,  the Company may by majority  vote of the Board of  Directors  and a
majority  vote of the  Continuing  Directors,  and the Rights Agent shall if the
Company so directs,  supplement or amend any provision of this  Agreement in any
respect without the approval of any holders of the Rights.  At any time when the
Rights are no longer redeemable,  except as provided in the penultimate sentence
of this Section 27, the Company may, and the Rights Agent shall,  if the Company
so directs,  supplement  or amend this  Agreement  without  the  approval of any
holders of Rights in order to (i) cure any ambiguity, (ii) correct or supplement
any provision  contained herein which may be defective or inconsistent  with any
other provision herein, (iii) shorten or lengthen any time period hereunder,  or
(iv) change or  supplement  the  provisions  hereunder  in any manner  which the
Company may deem  necessary or desirable;  provided  that no such  supplement or
amendment shall adversely  affect the interests of the holders of Rights as such
(other than an  Acquiring  Person or an  Affiliate  or Associate of an Acquiring
Person),  and no such amendment may cause the Rights again to become  redeemable
or cause the Agreement  again to become  amendable other than in accordance with
this  sentence.  Notwithstanding  anything  contained  in this  Agreement to the
contrary,  no supplement or amendment shall be made which changes the Redemption
Price.  Upon the delivery of a certificate  from an  appropriate  officer of the

                                       41

                                     - 44 -

<PAGE>

Company which states that the proposed  supplement or amendment is in compliance
with  the  terms of this  Section  27,  the  Rights  Agent  shall  execute  such
supplement or amendment.

         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 other than the Company,  the Rights Agent and
the registered holders of the Right Certificates (and, prior to the Distribution
Date, the Common Stock) any legal or equitable right, remedy or claim under this
Agreement; but this Agreement shall be for the sole and exclusive benefit of the
Company,  the Rights Agent and the registered  holders of the Right Certificates
(and, prior to the Distribution Date, the Common Stock).

                  Section  30.  Determinations  and  Actions  by  the  Board  of
Directors.  The Board of  Directors  of the  Company  (and,  where  specifically
provided for herein,  the Continuing  Directors)  shall have the exclusive power
and authority to administer this Agreement and to exercise the rights and powers
specifically  granted to the Board of Directors of the Company or to the Company
(or, where specifically  provided for herein, the Continuing  Directors),  or as
may  be  necessary  or  advisable  in  the  administration  of  this  Agreement,
including,  without  limitation,  the  right  and  power  to (i)  interpret  the
provisions of this Agreement and (ii) make all  determinations  deemed necessary
or  advisable  for the  administration  of this  Agreement  (including,  without
limitation,  a determination to redeem or not redeem the Rights or to amend this
Agreement). All such actions,  calculations,  interpretations and determinations
(including,  for purposes of clause (y) below, all omissions with respect to the
foregoing)  that are done or made by the Board of  Directors of the Company (or,
where specifically provided for herein, the Continuing Directors) in good faith,
shall (x) be final, conclusive and binding on the Company, the Rights Agent, the
holders of the Rights,  as such, and all other parties,  and (y) not subject the
Board of Directors or the  Continuing  Directors to any liability to the holders
of the Rights.

         Section  31.  Severability.   If  any  term,  provision,   covenant  or
restriction  of this Agreement is held by a court of competent  jurisdiction  or
other  authority  to be invalid,  void or  unenforceable,  the  remainder of the
terms, provisions,  covenants and restrictions of this Agreement shall remain in
full force and effect and shall in no way be affected,  impaired or invalidated.
Without  limiting  the  foregoing,  if any  provision  requiring  approval  of a
majority  of the  Continuing  Directors  is  held  by  any  court  of  competent

                                       42

                                     - 45 -

<PAGE>

jurisdiction  or other  authority  to be invalid,  void or  unenforceable,  such
determination  shall then be made by the Board of  Directors  of the  Company in
accordance  with applicable law and the Company's  Certificate of  Incorporation
and Bylaws.

         Section 32.  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 33. Counterparts.  This Agreement may be executed in any number
of counterparts and each of such  counterparts  shall for all purposes be deemed
to be an original,  and all such counterparts shall together  constitute but one
and the same instrument.

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

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

                                       DATA TRANSMISSION NETWORK CORPORATION



                                       By:
                                               Name:  /s/ Roger R. Brodersen
                                                      --------------------------
                                               Title: Chairman and CEO
                                                      --------------------------



                                       FIRST NATIONAL BANK OF OMAHA,
                                       as Rights Agent



                                       By:
                                               Name:  /s/ John E. Lenihan
                                                      --------------------------
                                               Title: Trust Officer
                                                      --------------------------

                                       43

                                     - 46 -

<PAGE>
                                                                       EXHIBIT A

                       FORM OF CERTIFICATE OF DESIGNATION
                                       of
                  SERIES A JUNIOR PARTICIPATING PREFERRED STOCK
                                       of
                      DATA TRANSMISSION NETWORK CORPORATION

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

         Data  Transmission  Network  Corporation,  a corporation  organized and
existing  under  the  General  Corporation  Law of the  State  of  Delaware,  in
accordance with the provisions of Section 103 thereof, DOES HEREBY CERTIFY:

         That  pursuant to the  authority  vested in the Board of  Directors  in
accordance with the provisions of the Certificate of  Incorporation  of the said
Corporation,  the said  Board of  Directors  on  August  29,  1997  adopted  the
following  resolution  creating a series of 100,000  shares of  Preferred  Stock
designated as "Series A Junior Participating Preferred Stock

         RESOLVED,  that  pursuant  to the  authority  vested  in the  Board  of
         Directors of this  Corporation in accordance with the provisions of the
         Certificate of  Incorporation,  a series of Preferred  Stock, par value
         $.50 per share, of the  Corporation be and hereby is created,  and that
         the  designation  and number of shares thereof and the voting and other
         powers,  preferences  and  relative,  participating,  optional or other
         rights of the shares of such series and the qualifications, limitations
         and restrictions thereof are as follows:

                  Series A Junior Participating Preferred Stock

         1.  Designation and Amount.  There shall be a series of Preferred Stock
that shall be designated as "Series A Junior Participating Preferred Stock," and
the number of shares  constituting such series shall be 100,000.  Such number of
shares may be increased or decreased by  resolution  of the Board of  Directors;
provided,  however, that no decrease shall reduce the number of shares of Series
A Junior  Participating  Preferred  Stock to less than the number of shares then
issued and  outstanding  plus the number of shares  issuable  upon  exercise  of
outstanding  rights,  options or  warrants  or upon  conversion  of  outstanding
securities issued by the Corporation.

         2.       Dividends and Distribution.

                  (A) Subject to the prior and superior rights of the holders of
any shares of any series of preferred  stock  ranking  prior and superior to the
shares of Series A Junior Participating
  
                                 - 47 -

<PAGE>

Preferred  Stock with  respect to  dividends,  the holders of shares of Series A
Junior Participating  Preferred Stock, in preference to the holders of shares of
any class or series of stock of the  Corporation  ranking junior to the Series A
Junior  Participating  Preferred Stock in respect thereof,  shall be entitled to
receive, when, as and if declared by the Board of Directors out of funds legally
available for the purpose,  quarterly dividends payable in cash on the first day
of March,  June,  September  and  December  in each year  (each  such date being
referred to herein as a "Quarterly  Dividend  Payment Date"),  commencing on the
first  Quarterly  Dividend  Payment Date after the first  issuance of a share or
fraction  of a share of Series A Junior  Participating  Preferred  Stock,  in an
amount per share (rounded to the nearest cent) equal to the greater of (a) $1.00
or (b) the  Adjustment  Number (as defined  below) times the aggregate per share
amount of all cash dividends,  and the Adjustment Number times the aggregate per
share amount (payable in kind) of all non-cash dividends or other  distributions
other than a dividend  payable in shares of Common Stock or a subdivision of the
outstanding shares of Common Stock (by reclassification or otherwise),  declared
on the Common Stock,  par value $.001 per share, of the Corporation (the "Common
Stock") since the immediately  preceding  Quarterly  Dividend  Payment Date, or,
with  respect to the first  Quarterly  Dividend  Payment  Date,  since the first
issuance of any share or  fraction  of a share of Series A Junior  Participating
Preferred Stock.  The "Adjustment  Number" shall initially be 1000. In the event
the Corporation  shall at any time after August 29, 1997 (i) declare and pay any
dividend on Common Stock payable in shares of Common Stock,  (ii)  subdivide the
outstanding  Common Stock or (iii) combine the  outstanding  Common Stock into a
smaller number of shares, then in each such case the Adjustment Number in effect
immediately prior to such event shall be adjusted by multiplying such Adjustment
Number by a fraction  the  numerator  of which is the number of shares of Common
Stock  outstanding  immediately after such event and the denominator of which is
the number of shares of Common Stock that were outstanding  immediately prior to
such event.

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

                            (C)   Dividends   shall   begin  to  accrue  and  be
cumulative  on  outstanding  shares of Series A Junior  Participating  Preferred
Stock from the Quarterly  Dividend Payment Date next preceding the date of issue
of such shares of Series A Junior Participating Preferred Stock, unless the date
of issue of such  shares is prior to the  record  date for the  first  Quarterly
Dividend  Payment  Date,  in which case  dividends on such shares shall begin to
accrue from the date of issue of such  shares,  or unless the date of issue is a
Quarterly  Dividend  Payment  Date or is a date  after the  record  date for the
determination  of holders of shares of Series A Junior  Participating  Preferred

                                       2

                                     - 48 -

<PAGE>

Stock  entitled  to  receive a  quarterly  dividend  and before  such  Quarterly
Dividend  Payment Date, in either of which events such dividends  shall begin to
accrue and be cumulative from such Quarterly  Dividend Payment Date. Accrued but
unpaid dividends shall not bear interest. Dividends paid on the shares of Series
A Junior  Participating  Preferred Stock in an amount less than the total amount
of such  dividends  at the time  accrued  and  payable on such  shares  shall be
allocated pro rata on a  share-by-share  basis among all such shares at the time
outstanding.  The Board of Directors may fix a record date for the determination
of holders of shares of Series A Junior  Participating  Preferred Stock entitled
to receive payment of a dividend or distribution declared thereon,  which record
date  shall be no more  than 60 days  prior to the date  fixed  for the  payment
thereof.

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

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

                  (B)  Except  as  required  by law and by  Section  10  hereof,
holders of Series A Junior  Participating  Preferred Stock shall have no special
voting rights and their consent shall not be required (except to the extent they
are  entitled  to vote with  holders of Common  Stock as set forth  herein)  for
taking any corporate action.

         4.       Certain Restrictions.

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

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

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

                                       3

                                     - 49 -

<PAGE>

dividends  are payable or in arrears in proportion to the total amounts to which
the holders of all such shares are then entitled; or

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

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

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

         6.       Liquidation, Dissolution or Winding Up.

                  (A) Upon any  liquidation,  dissolution  or  winding up of the
Corporation,  voluntary  or  otherwise,  no  distribution  shall  be made to the
holders  of shares of stock  ranking  junior  (either  as to  dividends  or upon
liquidation,  dissolution  or winding  up) to the Series A Junior  Participating
Preferred Stock unless,  prior thereto, the holders of shares of Series A Junior
Participating  Preferred  Stock  shall  have  received  an amount per share (the
"Series A  Liquidation  Preference")  equal to the  greater  of (i) $150 plus an
amount equal to accrued and unpaid dividends and distributions thereon,  whether
or not declared,  to the date of such  payment,  or (ii) the  Adjustment  Number
times the per share amount of all cash and other  property to be  distributed in
respect of the Common Stock upon such liquidation,  dissolution or winding up of
the Corporation.

                  (B) In the  event,  however,  that  there  are not  sufficient
assets  available  to  permit  payment  in  full  of the  Series  A  Liquidation
Preference and the liquidation preferences of all other series of all classes of

                                       4

                                     - 50 -

<PAGE>

preferred  stock,  if any,  that  rank on a  parity  with  the  Series  A Junior
Participating  Preferred Stock in respect thereof, then the assets available for
such  distribution  shall be distributed  ratably to the holders of the Series A
Junior  Participating  Preferred  Stock and the holders of such parity shares in
proportion to their respective liquidation preferences.

                  (C) Neither  the merger or  consolidation  of the  Corporation
into or with another  corporation nor the merger or  consolidation  of any other
corporation  into or with the  Corporation  shall be deemed to be a liquidation,
dissolution or winding up of the Corporation  within the meaning of this Section
6.

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

         8.       No Redemption.  Shares of Series A Junior  Participating  Pre-
ferred Stock shall not be subject to redemption by the Company.

         9. Ranking.  The Series A Junior  Participating  Preferred  Stock shall
rank junior to all other  series of all classes of the  Corporation's  preferred
stock as to the payment of dividends and as to the  distribution  of assets upon
liquidation,  dissolution  or winding  up,  unless the terms of any such  series
shall  provide  otherwise,  and shall rank senior to the Common Stock as to such
matters.

         10.  Amendment.  At any  time  that  any  shares  of  Series  A  Junior
Participating Preferred Stock are outstanding,  the Certificate of Incorporation
of the  Corporation  shall not be amended in any manner  which would  materially
alter or change the powers, preferences or special rights of the Series A Junior
Participating  Preferred  Stock  so as to  affect  them  adversely  without  the
affirmative  vote of the  holders of  two-thirds  of the  outstanding  shares of
Series A Junior Participating Preferred Stock, voting separately as a class.

                                       5

                                     - 51 -

<PAGE>

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

IN WITNESS WHEREOF,  the undersigned has executed this Certificate this ____ day
of ________, 1997.

                                           DATA TRANSMISSION NETWORK CORPORATION

                                           By:_________________________________
                                           Name:_______________________________
                                           Title:______________________________

                                       6

                                     - 52 -

<PAGE>

                                                                       EXHIBIT B
                           [Form of Right Certificate]

Certificate No. R                                                  ______ Rights

         NOT  EXERCISABLE  AFTER  AUGUST 29,  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.  UNDER CERTAIN
         CIRCUMSTANCES,  AS SET FORTH IN THE RIGHTS  AGREEMENT,
         RIGHTS OWNED BY OR  TRANSFERRED  TO ANY PERSON WHO IS OR
         BECOMES AN  ACQUIRING PERSON (AS DEFINED IN THE RIGHTS
         AGREEMENT)  AND  CERTAIN  TRANSFEREES THEREOF WILL BECOME
         NULL AND VOID AND WILL NO LONGER BE TRANSFERABLE.

                                Right Certificate

                      DATA TRANSMISSION NETWORK 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 August 29, 1997,  as the same may be amended
from time to time (the "Rights  Agreement"),  between Data Transmission  Network
Corporation,  a Delaware corporation (the "Company"), and First National Bank of
Omaha, as Rights Agent (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.,  Omaha,  Nebraska time, on August 29, 2007 at
the office or agency of the Rights Agent designated for such purpose,  or of its
successor as Rights Agent,  one  one-thousandth  of a fully paid  non-assessable
share of Series A Junior Participating Preferred Stock, par value $.50 per share
(the "Preferred  Stock"), of the Company, at a purchase price of $150.00 per one
one-thousandth  of a share of  Preferred  Stock  (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  Rights
Certificate (and the number of one one-thousandths of a share of Preferred Stock
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 August 29, 1997,
based on the  Preferred  Stock as  constituted  at such date. As provided in the
Rights  Agreement,  the Purchase Price, the number of one  one-thousandths  of a
share of  Preferred  Stock  (or  other  securities  or  property)  which  may be
purchased upon the exercise of the Rights and the number of 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

                                     - 53 -

<PAGE>

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  office  or agency of the  Rights  Agent.  The
Company will mail to the holder of this Right  Certificate  a copy of the Rights
Agreement without charge after receipt of a written request therefor.

         This Right Certificate, with or without other Right Certificates,  upon
surrender  at the  office or  agency of the  Rights  Agent  designated  for such
purpose, 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 shares of  Preferred  Stock 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  shares of the
Company's Common Stock, par value $.001 per share, or shares of Preferred Stock.

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

         No holder of this Right Certificate, as such, shall be entitled to vote
or receive  dividends  or be deemed for any purpose the holder of the  Preferred
Stock  or of any  other  securities  of the  Company  which  may at any  time be
issuable on the exercise or exchange 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  or  exchanged as provided in the Rights
Agreement.

                                       2

                                     - 54 -

<PAGE>

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

         WITNESS the facsimile  signature of the proper  officers of the Company
and its corporate seal. Dated as of , 199 .

                                              DATA TRANSMISSION NETWORK
                                              CORPORATION
ATTEST:
                                              By:_______________________________
By:______________________                     Title:____________________________
Title:___________________

Countersigned:

FIRST NATIONAL BANK OF OMAHA, as Rights Agent

By:______________________
   Authorized Signature

                                       3

                                     - 55 -

<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)

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

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

Signature Guaranteed:


         Signatures must be guaranteed by a bank, trust company,  broker, dealer
or other eligible institution  participating in a recognized signature guarantee
medallion program.

                                (To be completed)

         The  undersigned  hereby  certifies  that the Rights  evidenced by this
Right  Certificate  are not  beneficially  owned by,  were not  acquired  by the
undersigned  from,  and are not  being  assigned  to an  Acquiring  Person or an
Affiliate or Associate thereof (as defined in the Rights Agreement).

                                             -----------------------------------
                                             Signature

                                       4

                                     - 56 -

<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 DATA TRANSMISSION NETWORK CORPORATION:

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

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

                         (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 must conform to holder specified on Right Certificate)

Signature Guaranteed:

         Signature must be guaranteed by a bank, trust company,  broker,  dealer
or other eligible institution  participating in a recognized signature guarantee
medallion program.

                                       5

                                     - 57 -

<PAGE>

              Form of Reverse Side of Right Certificate - continued

                                (To be completed)

         The  undersigned  certifies  that the  Rights  evidenced  by this Right
Certificate  are not  beneficially  owned  by,  and  were  not  acquired  by the
undersigned  from, 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, such Assignment or Election to Purchase will not be honored.

                                       6

                                     - 58 -

<PAGE>

                                                                       EXHIBIT C


                  UNDER  CERTAIN  CIRCUMSTANCES,  AS SET  FORTH  IN
                  THE  RIGHTS AGREEMENT, RIGHTS OWNED BY OR
                  TRANSFERRED TO ANY PERSON WHO IS OR  BECOMES  AN 
                  ACQUIRING  PERSON  (AS  DEFINED IN THE RIGHTS
                  AGREEMENT)  AND CERTAIN  TRANSFEREES  THEREOF 
                  WILL BECOME NULL AND VOID AND WILL NO LONGER 
                  BE TRANSFERABLE.


                          SUMMARY OF RIGHTS TO PURCHASE
                          SHARES OF PREFERRED STOCK OF
                      DATA TRANSMISSION NETWORK CORPORATION

         On August 29, 1997, the Board of Directors of Data Transmission Network
Corporation (the "Company")  declared a dividend of one preferred share purchase
right (a "Right") for each  outstanding  share of common stock,  par value $.001
per share,  of the Company  (the  "Common  Stock").  The  dividend is payable on
September  2, 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-thousandth of a share of Series A Junior Participating  Preferred Stock, par
value $.50 per  share,  of the  Company  (the  "Preferred  Stock") at a price of
$150.00 per one-thousandth of a share of Preferred Stock (the "Purchase Price"),
subject to adjustment.  The description and terms of the Rights are set forth in
a Rights  Agreement  dated as of August 29, 1997 as the same may be amended from
time to time (the "Rights  Agreement"),  between the Company and First  National
Bank of Omaha, 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")  has  acquired  beneficial  ownership of 11% or more of the
outstanding  shares of Common Stock or (ii) 10 business days (or such later date
as may be  determined by action of a majority of  Continuing  Directors  then in
office 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 11% or more of
the  outstanding  shares of Common Stock (the earlier of such dates being called
the "Distribution  Date"), the Rights will be evidenced,  with respect to any of
the Common Stock certificates  outstanding as of the Record Date, by such Common
Stock  certificate  together  with a copy of this  Summary of  Rights.  The term
"Acquiring  Person"  excludes the Company,  any  subsidiary of the Company,  any
employee benefit plan of the Company or any subsidiary of the Company, and Roger
R.  Brodersen  (the  founder of the  Company)  and certain  related  persons and
entities.

                                     - 59 -

<PAGE>

In addition,  any other  person  whose  current  level of  beneficial  ownership
exceeds 11% but is less than 14% of the Common  Stock will  become an  Acquiring
Person  only if its level of  beneficial  ownership  exceeds  14% of the  Common
Stock.
         The Rights Agreement  provides that,  until the  Distribution  Date (or
earlier expiration of the Rights),  the Rights will be transferred with and only
with the Common Stock. Until the Distribution Date (or earlier expiration of the
Rights),  new  Common  Stock  certificates  issued  after the  Record  Date upon
transfer or new issuances of Common Stock will contain a notation  incorporating
the Rights  Agreement  by  reference.  Until the  Distribution  Date (or earlier
expiration of the Rights),  the surrender for transfer of any  certificates  for
shares of Common  Stock  outstanding  as of the Record  Date,  even without such
notation or a copy of this Summary of Rights,  will also constitute the transfer
of the Rights  associated  with the shares of Common Stock  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  Stock 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 August 29, 2007 (the "Final Expiration  Date"),  unless the Final
Expiration  Date is  advanced  or  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 shares of Preferred Stock
or other securities or property issuable, upon exercise of the Rights is subject
to adjustment from time to time to prevent  dilution (i) in the event of a stock
dividend on, or a subdivision, combination or reclassification of, the Preferred
Stock,  (ii) upon the grant to holders of the Preferred  Stock of certain rights
or  warrants  to  subscribe  for or  purchase  Preferred  Stock at a  price,  or
securities  convertible into Preferred Stock with a conversion  price, less than
the  then  current  market  price  of the  Preferred  Stock  or  (iii)  upon the
distribution  to holders of the Preferred  Stock of evidences of indebtedness or
assets  (excluding  regular  periodic  cash  dividends or  dividends  payable in
Preferred  Stock)  or of  subscription  rights or  warrants  (other  than  those
referred to above).

         The number of outstanding  Rights is subject to adjustment in the event
of a stock  dividend on the Common  Stock  payable in shares of Common  Stock or
subdivisions,  consolidations or combinations of the Common Stock occurring,  in
any such case, prior to the Distribution Date.

         Shares of Preferred Stock  purchasable upon exercise of the Rights will
not be redeemable.  Each share of Preferred Stock will be entitled, when, as and
if declared,  to a minimum preferential  quarterly dividend payment of $1.00 per
share but will be entitled to an  aggregate  dividend of 1000 times the dividend
declared per share of Common Stock. In the event of liquidation,  dissolution or
winding up of the Company,  the holders of the Preferred  Stock will be entitled



                                       2

                                     - 60 -

<PAGE>

to a minimum  preferential  payment of $150.00  per share  (plus any accrued but
unpaid dividends) but will be entitled to an aggregate payment of 1000 times the
payment made per share of Common Stock.  Each share of Preferred Stock will have
1000 votes, voting together with the Common Stock.  Finally, in the event of any
merger, consolidation or other transaction in which outstanding shares of Common
Stock are converted or exchanged, each share of Preferred Stock will be entitled
to receive  1000  times the amount  received  per share of Common  Stock.  These
rights are protected by customary antidilution provisions.

         Because of the nature of the Preferred  Stock's  dividend,  liquidation
and voting rights,  the value of the one  one-thousandth  interest in a share of
Preferred Stock  purchasable upon exercise of each Right should  approximate the
value of one share of Common Stock.

         In the event  that any  person  or group of  affiliated  or  associated
persons becomes an Acquiring Person,  each holder of a Right,  other than Rights
beneficially  owned by the Acquiring  Person (which will thereupon become void),
will  thereafter  have the right to receive upon exercise of a Right that number
of shares of Common Stock having a market value of two times the exercise  price
of the Right.

         In the event  that,  after a person or group  has  become an  Acquiring
Person,  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,
proper provisions will be made so that each holder of a Right (other than Rights
beneficially  owned by an  Acquiring  Person  which will have become  void) will
thereafter have the right to receive upon the exercise of a Right that number of
shares of common  stock of the person  with whom the  Company has engaged in the
foregoing  transaction (or its parent) that at the time of such transaction have
a market value of two times the exercise price of the Right.

                                       3

                                     - 61 -

<PAGE>

         At any time after any person or group  becomes an Acquiring  Person and
prior to the earlier of one of the events described in the previous paragraph or
the  acquisition  by such  Acquiring  Person  of 50% or more of the  outstanding
shares  of  Common  Stock,  the  Board of  Directors  of the  Company  (with the
concurrence  of a majority  of the  Continuing  Directors  then in  office)  may
exchange the Rights (other than Rights owned by such Acquiring Person which will
have become void),  in whole or in part, for shares of Common Stock or Preferred
Stock (or a series of the Company's  preferred stock having  equivalent  rights,
preferences and privileges),  at an exchange ratio of one share of Common Stock,
or a fractional share of Preferred Stock (or other preferred  stock)  equivalent
in value thereto, per Right.
         The Rights Agreement defines "Continuing Director" as any member of the
Company's  Board of Directors who is not an Acquiring  Person or an affiliate or
associate of an Acquiring Person or a  representative  of an Acquiring Person or
any such  affiliate  or  associate  and  either (i) was a member of the Board of
Directors prior to the date of the Rights Agreement or (ii) subsequently becomes
a Board  member,  if such  person's  nomination  for election or election to the
Board is recommended or approved by a majority of the Continuing Directors.

         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  shares of Preferred  Stock or Common Stock
will be issued  (other than  fractions  of  Preferred  Stock which are  integral
multiples of one  one-thousandths  of a share of Preferred Stock,  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 current  market price of
the Preferred Stock or the Common Stock.

         At any time prior to the time an Acquiring  Person  becomes  such,  the
Board of Directors  of the Company  (with the  concurrence  of a majority of the
Continuing  Directors)  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 and with such  conditions as
the Board of Directors  and the  majority of such  Continuing  Directors  may in
their discretion  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.

         For so long as the  Rights  are then  redeemable,  the  Company  may by
majority  vote of the Board of  Directors  and majority  vote of the  Continuing
Directors,  except  with  respect  to the  redemption  price,  amend the  Rights
Agreement in any manner. After the Rights are no longer redeemable,  the Company
may, except with respect to the redemption price,  amend the Rights Agreement in
any  manner  that does not  adversely  affect  the  interests  of holders of the
Rights.

         Until a Right is exercised or exchanged,  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
August 29, 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,
as the same may be  amended  from  time to time,  which is  hereby  incorporated
herein by reference.

                                       4

                                     - 62 -

<PAGE>

                                                                       EXHIBIT D

                             VOTING TRUST AGREEMENT

          VOTING TRUST  AGREEMENT  made this ____ day of _______,  ____,  by and
among DATA TRANSMISSION NETWORK CORPORATION, a Delaware corporation (hereinafter
called   the   "Company"),   _____________________   (hereinafter   called   the
"Stockholder")  and those other parties  hereto,  and their  successors in trust
(hereinafter called the "Trustees").

          WHEREAS, the Stockholder is the holder of certain shares of the common
stock of the Company and desires to establish  this voting trust so as not to be
an "Acquiring  Person" as such term is defined in the Company's Rights Agreement
with First National Bank of Omaha dated August 29, 1997 (as amended from time to
time, the "Rights Agreement"),  and the Trustees have consented to act hereunder
for the purposes herein provided;

          NOW,  THEREFORE,  in  consideration  of the  premises  and the  mutual
agreements of the parties, it is agreed:

          1.  The  Stockholder,   simultaneously  with  its  execution  of  this
agreement,  shall endorse,  transfer and deliver its  certificate for __________
shares of the common stock of the Company to the Trustees or their nominee. Each
certificate  for common stock of the Company  transferred  and  delivered to the
Trustees  pursuant to this agreement shall be surrendered by the Trustees to the
Company and  cancelled,  and a new  certificate  therefor shall be issued to and
held by the Trustees in their names as Voting  Trustees U/A dated  ____________,
____, or in the name of their nominee.

          2.  Copies  of this  agreement,  and of every  agreement  supplemental
hereto  or  amendatory  hereof,  shall be filed at the  principal  office of the
Company  in  Omaha,  Nebraska,  and  shall  be  open  to the  inspection  of any
stockholder  of  the  Company,  or  any  beneficiary  of the  trust  under  this
agreement,  daily during business hours. All voting trust certificates issued as
hereinafter  provided  shall be issued,  received and held subject to all of the
terms of this agreement.  Every person, firm or corporation  entitled to receive
voting trust  certificates  representing  shares of common stock of the Company,
and their  respective  transferees and assigns,  upon accepting the voting trust
certificates issued hereunder, shall become parties to and shall be bound by the
provisions of this  agreement  with the same effect as if they had executed this
agreement.

          3. The voting  trust  certificates  to be issued and  delivered by the
Trustees  in  respect  of the  common  stock  of the  Company,  as  hereinbefore
provided,  shall  be  substantially  in the  form  attached  hereto  and by this
reference made a part hereof.

                                     - 63 -

<PAGE>

          4. Subject to their  terms,  the voting  trust  certificates  shall be
transferable at the principal  office of the Company in Omaha,  Nebraska (and at
such other offices as the Trustees may  designate by a notice in writing  signed
by the Trustees and sent by mail to the  registered  holders of the voting trust
certificates)  on the books of the Trustees,  by the registered  owners thereof,
either  in person or by  attorney  thereunto  duly  authorized,  upon  surrender
thereof,  according to the rules  established  for that purpose by the Trustees;
and the  Trustees  may treat the  registered  holders as owners  thereof for all
purposes  whatsoever,  but the Trustees  shall not be required to deliver  stock
certificates hereunder without the surrender of such voting trust certificates.

          5. The voting trust hereby created shall continue until the expiration
of ten (10) years from the date of this  agreement or until all of the shares of
common stock of the Company  subject to this agreement are withdrawn by the then
holders of the voting trust certificates pursuant to Section 6 hereof, whichever
occurs first;  and throughout  such period the Trustees shall have the exclusive
right to vote such  stock or to give  written  consents  in lieu of voting  such
stock,  subject  to any  limitation  on the right to vote  prescribed  by law or
contained in the  Certificate  of  Incorporation  or Bylaws of the  Company,  in
person or by proxy at all meetings of the stockholders of the Company and in all
proceedings  wherein the vote or written consent of stockholders may be required
or authorized by law or the Bylaws of the Company.  The Trustees shall use their
best  judgment in voting the stock held by them under this  agreement  but shall
not be liable for the  consequences  of any vote cast, or consent given by them,
in good faith and without gross negligence.

         6. If at any time  during  the term of this  agreement  any  registered
holder of voting  trust  certificates  desires to  withdraw  its shares from the
restrictions  of this  agreement,  such holder  shall have the right to do so by
making written  demand upon the Trustees for a return of its shares  represented
by  such  voting  trust  certificates  and by  surrendering  such  voting  trust
certificates  properly  endorsed  for  cancellation.  The  Trustees  as  soon as
possible,  but no later than ten days after receipt of such demand, shall assign
and  deliver to such  holder  the  shares so  demanded,  properly  endorsed  for
transfer to such holder.

         7. Any of the Trustees (and any of the  successor  Trustees) may at any
time resign by mailing to the registered  holders of voting trust certificates a
written  resignation,  to take  effect  ten days  thereafter.  Upon the death or
resignation of a Trustee,  the remaining Trustees may designate as a replacement
successor  Trustee any person who is a  "Continuing  Director"  (as such term is
defined in the Rights  Agreement),  and such successor Trustee shall accept such
appointment  by giving written notice thereof to the holders of the voting trust
certificates.  Any act,  decision,  or vote by the Trustees  shall be deemed the

                                       2

                                     - 64 -

<PAGE>

act,  decision,  or vote of such Trustees if concurred in by a majority of them.
The Trustees shall have the right,  subject to the provisions of this paragraph,
to exercise,  in person or by their nominees or proxies,  all stockholder voting
rights and powers in respect of all stock  deposited  hereunder.  If at any time
during the term of this agreement  there are no Trustees  acting as such (due to
deaths, resignations, or otherwise), then the Company shall and hereby agrees to
act as the sole Trustee hereunder.

          8. The Trustees shall serve without  compensation.  The Trustees shall
have the right to incur and pay such  reasonable  expenses  and  charges  and to
employ and pay such agents,  attorneys and counsel as he may deem  necessary and
proper for carrying  this  agreement  into effect.  Any such expenses or charges
incurred by and due to the Trustees may be deducted  from the dividends or other
moneys or property  received by the Trustees on the stock  deposited  hereunder.
Nothing herein  contained shall disqualify the Trustees from serving the Company
as officers or  directors,  or in any other  capacity,  and in any such capacity
receiving compensation therefor.

          9. Unless  otherwise  in this  agreement  specifically  provided,  any
notice  required  to be given to the  holders of the voting  trust  certificates
issued  hereunder  shall be deemed to be  sufficiently  given if in writing  and
delivered  personally  to them or if mailed to such holders at their  respective
addresses appearing on the transfer books of the Trustees.  The addresses of the
holders of voting  trust  certificates,  as shown on the  transfer  books of the
Trustees,  in all  cases  shall be deemed to be the  addresses  of voting  trust
certificate  holders for all purposes  under this  agreement,  without regard to
what other or  different  addresses  the  Trustees may have for any voting trust
certificate  holder on any other books or records of the Trustees.  Every notice
so given shall be effective,  whether or not  received;  and the date of mailing
shall be deemed the date such notice is given for all purposes. Any notice given
to the  Trustees  hereunder  shall be in  writing,  delivered  in  person to and
receipted  for by the  Trustees,  or  sent  by  registered  or  certified  mail,
addressed to the Trustees at 9110 West Dodge Road,  Suite 200,  Omaha,  Nebraska
68114 or at such other  address or addresses  as the  Trustees may  designate by
notice in writing to the holders of the voting trust certificates.

         10. In the event that any dividend or  distribution in cash or stock of
the Company,  other than shares of common  stock or other  voting  shares of the
Company, is received by the Trustees,  the Trustees shall distribute the same to
the registered  holders of the voting trust  certificates as of the date of such
distribution  or to  the  registered  certificate  holders  as of the  close  of
business on the date fixed by the Trustees for taking a record to determine  the
certificate  holders entitled to such  distribution,  ratably in accordance with

                                       3

                                     - 65 -

<PAGE>

the number of shares represented by their respective voting trust  certificates.
Shares of common  stock of the  Company or other  voting  shares of the  Company
issued to the Trustees as stock  dividends shall be subject to the terms of this
agreement  to the same extent and in the same manner as the shares with  respect
to which such stock  dividend  was  declared  and shall be held by the  Trustees
pursuant to this agreement.

        11.  This  agreement  shall inure to the benefit of and shall be binding
upon the  Stockholder  and the Company,  and their  respective  heirs,  personal
representatives, successors, and assigns, and the Trustees.

          IN WITNESS  WHEREOF,  the parties  hereto have executed this agreement
the day and year first above written.


STOCKHOLDER:                                       TRUSTEES:

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

                                                   -----------------------------
                                                   ____________________, Trustee


DATA TRANSMISSION                                  _____________________________
NETWORK CORPORATION                                ____________________, Trustee
By:___________________                             _____________________________
Title:________________                             ____________________, Trustee


                                                   -----------------------------
                                                   ____________________, Trustee


                                                   -----------------------------
                                                   ____________________, Trustee


                                                   -----------------------------
                                                   ____________________, Trustee


                                                   -----------------------------
                                                   ____________________, Trustee

                                       4

                                     - 66 -

<PAGE>

No. _____                                                          ______ Shares

                      DATA TRANSMISSION NETWORK CORPORATION
                           
                             A Delaware Corporation

                   VOTING TRUST CERTIFICATE FOR COMMON STOCK

         This  certifies  that  ______________________________,   or  registered
assigns,  is entitled to all of the  benefits  arising from the deposit with the
Trustees under the Voting Trust Agreement  hereinafter mentioned of certificates
for shares of the capital  stock of Data  Transmission  Network  Corporation,  a
Delaware  corporation,  hereinafter  called the  "Company",  as provided in such
trust agreement and subject to the terms thereof.  The registered holder hereof,
or assigns, is entitled to receive payment equal to the amount of cash dividends
or distributions,  if any, received by the Trustees upon the number of shares of
the capital stock of the Company in respect of which this certificate is issued.
Dividends received by the Trustees in common stock or other voting shares of the
Company shall be payable in voting trust  certificates,  in form similar hereto.
Until the  Trustees  shall  have  delivered  the stock  held  under  such  trust
agreement to the holders of the trust  certificates,  as specified in such trust
agreement,  subject to the limitations  contained in such trust  agreement,  the
Trustees  shall  possess and shall be entitled to exercise all voting rights and
powers of an absolute  owner of such stock,  including the right to vote thereon
for every purpose and to execute  consents in respect thereof for every purpose,
it being  expressly  stipulated that no voting right passes to the owner hereof,
or to their assigns,  under this  certificate or under any agreement  express or
implied except as expressly provided in such trust agreement.

         A. This certificate is issued,  received and held under, and the rights
of the owner  hereof are  subject  to, the terms of the Voting  Trust  Agreement
dated  __________,  _____,  expiring  ten (10) years  thereafter  unless  sooner
terminated  in  accordance  with  the  provisions  of  such   agreement,   among
____________________________ and _______________________, Trustees, the Company,
and the holders of this and similar  certificates  (copies of which Voting Trust
Agreement and of every agreement  amending or supplementing the same are on file
in the principal office of the Company in Omaha,  Nebraska, and shall be open to
the  inspection of any  stockholder  of the Company,  or any  beneficiary of the
trust  under  such  agreement,  daily  during  business  hours),  to  all of the
provisions of which Voting Trust  Agreement the holder of this  certificate,  by
acceptance hereof,  assents and by which the holder of this certificate is bound
with like effect as if such  Voting  Trust  Agreement  had been signed by him in
person.

                                       5

                                     - 67 -

<PAGE>

         B. This certificate is transferable on the books of the Trustees at the
office of the Company in Omaha,  Nebraska  (or  elsewhere as  designated  by the
Trustees) by the holder hereof, either in person or by attorney duly authorized,
in accordance with the rules established for that purpose by the Trustees and on
surrender of this certificate properly endorsed.  Title to this certificate when
duly endorsed  shall, to the extent  permitted by law, be transferable  with the
same  effect as in the case of the stock  certificate  representing  the shares.
Each holder hereof agrees that  delivery of this  certificate,  duly endorsed by
any  holder  hereof,  shall vest title  hereto and all rights  hereunder  in the
transferee; provided, however, that the Trustees may treat the registered holder
hereof,  or when  presented duly endorsed in blank,  the bearer  hereof,  as the
absolute owner hereof, and of all rights and interests  represented  hereby, for
all purposes whatsoever,  and the Trustees shall not be bound or affected by any
notice to the contrary, or by any notice of any trust, whether express,  implied
or constructive, or of any charge or equity respecting the title or ownership of
this  certificate,  or the  shares of stock  represented  hereby,  except to the
extent that restrictions,  limitations or conditions  respecting the transfer of
this certificate be endorsed hereon by the Trustees;  provided, however, that no
delivery of stock certificates hereunder, or the proceeds thereof, shall be made
without the surrender of this certificate properly endorsed.

          C. This certificate shall not be  valid  for  any  purpose until duly
signed by the Trustees.

         IN WITNESS  WHEREOF,  the  Trustees  have  signed this  certificate  on
___________, _____.

                                                   -----------------------------
                                                   Trustee

                                                   -----------------------------
                                                   Trustee

                                                   -----------------------------
                                                   Trustee

                                                   -----------------------------
                                                   Trustee

                                                   -----------------------------
                                                   Trustee

                                                   -----------------------------
                                                   Trustee

                                                   -----------------------------
                                                   Trustee

                                        6

                                     - 68 -

<PAGE>

Form of Assignment:

         For value received,  _________________________hereby assigns the within
certificate,    and   all   right   and   interest   represented   thereby,   to
_______________________________  and appoints  _________________________________
attorney to transfer  this  certificate  on the books of the Trustees  mentioned
therein, with full power of substitution.

Dated:__________

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

In the presence of:

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


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

                                       7

                                     - 69 -


                                 PRESS RELEASE

August 29, 1997                                  Contact:  Linda A. Grunberg
                                                           402-255-3748 (office)
                                                           402-390-7188 (FAX)

                                                           Brian Larson
                                                           402-255-3757 (office)
                                                           402-255-8666 (FAX)


      Data Transmission Network Corporation Adopts Shareholder Rights Plan

         Omaha, NE -- Data Transmission Network Corporation (DTN), traded on the
NASDAQ exchange as DTLN, announced today that its Board of Directors has adopted
a  Shareholder  Rights  Plan and  declared a  dividend  of one  preferred  stock
purchase  right on each  outstanding  share  of its  common  stock.  The Plan is
intended to protect and potentially enhance shareholder value.
         The  non-taxable  dividend  distribution  will be made on  September 2,
1997,  payable to shareholders of record on that date. The Rights will expire on
August 29, 2007.  Until the rights become  exercisable  upon certain  triggering
events, the Rights trade with the Company's common stock as a unit.
         The Plan is similar  to plans  adopted  by many  other  companies.  The
Rights are  designed  to assure  that all  shareholders  receive  fair and equal
treatment  in the event of any  proposed  takeover  of the  Company and to guard
against  partial  tender  offers or other tactics to gain control of the Company
which might provide inadequate or dissimilar value to shareholders. The Board is
not aware of any current efforts to acquire the Company at this time.

                                       1

                                     - 70 -

<PAGE>

         The rights  become  exercisable  only if a person or group  acquires 11
percent or more of DTN's common stock or announces a tender offer for 11 percent
or more of DTN's  common  stock.  The Plan  allows a person or group to  acquire
greater  than 11% (but not more than 20%) of DTN's  common  stock  with a voting
trust agreement as provided in the Plan.  Each Right will initially  entitle the
holder to  purchase  one  one-thousandths  of a share of a new  series of junior
participating preferred stock at an exercise price of $150.00.
         If a person  acquires  11 percent or more of DTN's  common  stock,  all
holders of rights other than the acquiring  person are entitled to acquire DTN's
common stock at a substantial discount. If after such event DTN is acquired in a
merger or other  business  combination,  rights holders would be able to buy the
acquiring  company's  shares at a substantial  discount.  At any time within ten
days after a person or group has acquired beneficial ownership of 11% or more of
the Company's  common stock, the Rights are redeemable for one cent per Right at
the option of certain members of the Board of Directors.
         After the Rights become exercisable,  the Plan, in essence, permits DTN
shareholders  (other  than the person or group  attempting  to gain  control) to
acquire  DTN  shares at a  significant  discount.  This  right  will  dilute the
ownership of the acquiring person or group and encourage them to first negotiate
with DTN's Board of Directors.
         Data Transmission  Network  Corporation  (NASDAQ:  DTLN), an electronic
information and communication  services company headquartered in Omaha, NE, is a
leader in the  delivery  of  time-sensitive  information.  DTN is  committed  to
providing the best information and analysis  available,  as quickly as possible,
at an affordable  cost to over 154,000  subscribers in the U.S. and Canada.  The
company  has  information  and  communication  services  for  the  agricultural,
automotive,  energy, farm implement,  financial,  mortgage,  produce, golf, turf
management,    construction,    aviation,   emergency   management   and   other
weather-related industries.
                       Visit our web site at www.dtn.com.

                                       2

                                     - 71 -



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