THERAGENICS CORP
8-A12G, 1997-02-26
PHARMACEUTICAL PREPARATIONS
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<PAGE>   1
 
================================================================================
 
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON D.C. 20549
 
                               ------------------
 
                                    FORM 8-A
 
                     FOR REGISTRATION OF CERTAIN CLASSES OF
                SECURITIES PURSUANT TO SECTION 12(B) OR 12(G) OF
                      THE SECURITIES EXCHANGE ACT OF 1934
 
                            THERAGENICS CORPORATION
             (Exact Name of Registrant as Specified in Its Charter)
 
<TABLE>
<C>                                                <C>
                  DELAWARE                                          58-1528626
          (State of Incorporation                                 (IRS Employer
              or Organization)                                 Identification No.)

             1770 INDIAN TRAIL
                 SUITE 440
             NORCROSS, GEORGIA                                        30093
  (Address of Principal Executive Offices)                          (Zip Code)
</TABLE>
 
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(b) of the Act:
 
<TABLE>
<CAPTION>
            TITLE OF EACH CLASS                           NAME OF EACH EXCHANGE ON WHICH
            TO BE SO REGISTERED                           EACH CLASS IS TO BE REGISTERED
            -------------------                           ------------------------------
<S>                                                <C>
 
</TABLE>
 
     Securities to be registered pursuant to Section 12(g) of the Act:
 
                          COMMON STOCK PURCHASE RIGHTS
                      -----------------------------------
                                (Title of Class)
 
                      Index to Exhibits Appears on Page 7
 
================================================================================
<PAGE>   2
 
ITEM 1.  DESCRIPTION OF REGISTRANT'S SECURITIES TO BE REGISTERED.
 
     On February 14, 1997, the Board of Directors of Theragenics Corporation
(the "Company") declared a dividend distribution of one right (a "Right") for
each outstanding share of common stock, par value $.01 per share (the "Common
Shares"), of the Company. The distribution is payable on February 28, 1997 (the
"Record Date") to the shareholders of record as of the close of business on the
Record Date. Each Right entitles the registered holder to purchase from the
Company one Common Share at a price of $120.00 (the "Purchase Price"), subject
to adjustment. The description and terms of the Rights are set forth in a Rights
Agreement, dated as of February 17, 1997 (the "Rights Agreement"), between the
Company and SunTrust Bank, Atlanta, as Rights Agent (the "Rights Agent").
 
     Until the earliest to occur of (i) the close of business on the tenth
calendar day (or such later date as may be specified by the Board of Directors)
following a public announcement that a person or group of affiliated or
associated persons has acquired, or obtained the right to acquire, beneficial
ownership of 15% or more of the outstanding Common Shares (an "Acquiring
Person"), (ii) the close of business on the tenth calendar day following the
commencement of a tender offer or exchange offer by a person or group of
affiliated or associated persons, the consummation of which would result in
beneficial ownership by such person or group of 15% or more of the outstanding
Common Shares, or (iii) the close of business on the tenth calendar day
following the first date of public announcement of the first occurrence of a
Flip-in Event or a Flip-over Event (as such terms are hereinafter defined) (the
earliest of such dates being hereinafter called the "Distribution Date"), the
Rights will be evidenced, with respect to any of the Common Share certificates
outstanding as of the Record Date, by such Common Share certificates.
 
     The Rights Agreement provides that, until the Distribution Date, the Rights
will be transferred with and only with the Common Shares. Until the Distribution
Date (or earlier redemption or expiration of the Rights), new Common Share
certificates issued after the Record Date upon transfer or new issuance of
Common Shares will contain a notation incorporating the Rights Agreement by
reference. Until the Distribution Date (or earlier redemption or expiration of
the Rights), the surrender for transfer of any certificates for Common Shares in
respect of which Rights have been issued will also constitute the transfer of
the Rights associated with the Common Shares represented by such certificates.
As soon as practicable following the Distribution Date, separate certificates
evidencing the Rights (the "Right Certificates") will be mailed to holders of
record of the Common Shares as of the close of business on the Distribution Date
and such separate Right Certificates alone will evidence the Rights.
 
     No Right is exercisable at any time prior to the Distribution Date. The
Rights will expire on February 28, 2007 (the "Final Expiration Date") unless
earlier redeemed or exchanged by the Company as described below. Until a Right
is exercised, the holder thereof, as such, will have no rights as a shareholder
of the Company, including without limitation the right to vote or to receive
dividends.
 
     The Purchase Price payable, and the number of Common Shares or other
securities issuable, upon exercise of the Rights are subject to adjustment from
time to time to prevent dilution (i) in the event of a stock dividend on, or a
subdivision, combination or reclassification of, the Common Shares, (ii) upon
the grant to holders of the Common Shares of certain rights or warrants to
subscribe for or purchase Common Shares at a price, or securities convertible
into Common Shares with a conversion price, less than the then current market
price of the Common Shares or (iii) upon the distribution to holders of the
Common Shares of evidences of indebtedness or cash (excluding regular periodic
cash dividends), assets, stock (excluding dividends payable in Common Shares) or
of subscription rights or warrants (other than those referred to above).
 
     In the event (a "Flip-in Event") that (i) any person or group of affiliated
or associated persons becomes the beneficial owner of 20% or more of the
outstanding Common Shares, (ii) any Acquiring Person merges into or combines
with the Company and the Company is the surviving corporation or any Acquiring
Person effects certain other transactions with the Company, as described in the
Rights Agreement, or (iii) during such time as there is an Acquiring Person,
there shall be any reclassification of securities or recapitalization or
reorganization of the Company which has the effect of increasing by more than 1%
the proportionate share of the outstanding shares of any class of equity
securities of the Company or any of its subsidiaries beneficially
 
                                        2
<PAGE>   3
 
owned by the Acquiring Person, proper provision shall be made so that each
holder of a Right, other than Rights that are or were owned beneficially by the
Acquiring Person (which, from and after the later of the Distribution Date and
the date of the earliest of any such events, will be void), will thereafter have
the right to receive, upon exercise thereof at the then current exercise price
of the Right, that number of Common Shares (or, under certain circumstances, an
economically equivalent security or securities of the Company) having a market
value of two times the exercise price of the Right.
 
     To illustrate the operation of such an adjustment, at a Purchase Price of
$120.00, assuming the current market price (as determined pursuant to the
provisions of the Rights Agreement) per Common Share were $30.00, each Right not
owned beneficially by an Acquiring Person at or after the time of such an
occurrence would entitle its holder to purchase (after the Distribution Date)
from the Company 8 Common Shares (having a market value of $240.00) for $120.00.
 
     In the event (a "Flip-over Event") that, following the first date of public
announcement that a person has become an Acquiring Person, (i) the Company
merges with or into any person and the Company is not the surviving corporation,
(ii) any person merges with or into the Company and the Company is the surviving
corporation, but its Common Shares are changed or exchanged, or (iii) 50% or
more of the Company's assets or earning power, including without limitation
securities creating obligations of the Company, are sold, proper provision shall
be made so that each holder of a Right will thereafter have the right to
receive, upon the exercise thereof at the then current exercise price of the
Right, that number of shares of common stock (or, under certain circumstances,
an economically equivalent security or securities) of such other person which at
the time of such transaction would have a market value of two times the exercise
price of the Right.
 
     At any time after the later of the Distribution Date and the first
occurrence of a Flip-in Event or Flip-over Event and prior to the acquisition by
any person or group of affiliated or associated persons of 50% or more of the
outstanding Common Shares, the Board of Directors of the Company may exchange
the Rights (other than any Rights which have become void), in whole or in part,
at an exchange ratio of one Common Share per Right (subject to adjustment).
 
     With certain exceptions, no adjustment in the Purchase Price will be
required until cumulative adjustments require an adjustment in the Purchase
Price of at least 1%. The Company is not required to issue fractional Common
Shares or other securities issuable upon the exercise of Rights. In lieu of
issuing such securities, the Company may make a cash payment, as provided in the
Rights Agreement.
 
     The Company may redeem the Rights in whole, but not in part, at a price of
$0.01 per Right (the "Redemption Price"), at any time prior to the close of
business on the later of (i) the Distribution Date and (ii) the first date of
public announcement that a person has become an Acquiring Person. Immediately
upon any redemption of the Rights, the right to exercise the Rights will
terminate and the only right of the holders of Rights will be to receive the
Redemption Price.
 
     The Rights Agreement may be amended by the Company without the approval of
any holders of Right Certificates, including amendments which add other events
requiring adjustment to the purchase price payable and the number of Common
Shares or other securities issuable upon the exercise of the Rights or which
modify procedures relating to the redemption of the Rights, provided that no
amendment may be made at such time as the Rights are not then redeemable which
decreases the stated Redemption Price or the period of time remaining until the
Final Expiration Date or which modifies a time period relating to when the
Rights may be redeemed.
 
     The Rights have certain anti-takeover effects. The Rights will cause
substantial dilution to a person or group that attempts to acquire the Company
on terms not approved by the Board of Directors, except pursuant to an offer
conditioned on a substantial number of Rights being acquired. The Rights should
not interfere with any merger or other business combination approved by the
Board of Directors since (subject to the limitations described above) the Rights
may be redeemed by the Company at the Redemption Price prior to the time that
the Rights would otherwise become exercisable, or if later, the time that a
person or group has become an Acquiring Person.
 
                                        3
<PAGE>   4
 
     The Rights Agreement, which includes the form of Right Certificate as an
exhibit thereto, and the forms of press release and letter to shareholders
announcing the declaration of the dividend distribution of the Rights are
attached hereto as exhibits and are incorporated herein by this reference. The
foregoing description of the Rights does not purport to be complete and is
qualified in its entirety by reference to such exhibits.
 
                                        4
<PAGE>   5
 
ITEM 2.  EXHIBITS.
 
<TABLE>
<S>   <C>
99.1  Rights Agreement (including Form of Right Certificate, as
      Exhibit A, and Summary of Rights to Purchase Common Shares,
      as Exhibit B)
99.2  Form of press release dated February 18, 1997.
99.3  Form of letter to shareholders dated February 28, 1997.
99.4  Power of Attorney and resolutions authorizing Power of
      Attorney.
</TABLE>
 
                                        5
<PAGE>   6
 
                                   SIGNATURE
 
     Pursuant to the requirements of Section 12 of the Securities Exchange Act
of 1934, the registrant has duly caused this registration statement to be signed
on its behalf by the undersigned, thereto duly authorized.
 
                                          THERAGENICS CORPORATION
 
                                          By        /s/ BRUCE W. SMITH
 
                                          --------------------------------------
                                                      Bruce W. Smith
                                                 Chief Financial Officer
 
Dated: February 26, 1997
 
                                        6
<PAGE>   7
 
                               INDEX TO EXHIBITS
 
<TABLE>
<CAPTION>
EXHIBIT
NUMBER                                   EXHIBIT
- -------                                  -------
<C>       <S>  <C>
  99.1    --   Rights Agreement (including Form of Right Certificate, as
               Exhibit A, and Summary of Rights to Purchase Common Shares,
               as Exhibit B).
  99.2    --   Form of press release dated February 18, 1997.
  99.3    --   Form of letter to shareholders dated February 28, 1997.
  99.4    --   Power of Attorney and resolutions authorizing Power of
               Attorney.
</TABLE>
 
                                        7

<PAGE>   1
 
                                                                    EXHIBIT 99.1
 
      Rights Agreement (including Form of Right Certificate, as Exhibit A,
         and Summary of Rights to Purchase Common Shares, as Exhibit B)
<PAGE>   2
 
================================================================================
 
                            THERAGENICS CORPORATION
 
                                      AND
 
                             SUNTRUST BANK, ATLANTA
 
                                RIGHTS AGREEMENT
 
                         DATED AS OF FEBRUARY 17, 1997
 
================================================================================
<PAGE>   3
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                                            PAGE
                                                                            ----
<S>      <C>  <C>                                                           <C>
                                                                              1
RECITALS..................................................................
Section   1.  Certain Definitions.........................................    1
Section   2.  Appointment of Rights Agent.................................    3
Section   3.  Issue of Right Certificates.................................    3
Section   4.  Form of Right Certificates..................................    4
Section   5.  Countersignature and Registration...........................    4
Section   6.  Transfer, Split Up, Combination and Exchange of Right
              Certificates; Mutilated, Destroyed, Lost or Stolen Right
              Certificates................................................    5
Section   7.  Exercise of Rights; Purchase Price; Expiration Date of
              Rights......................................................    5
Section   8.  Cancellation and Destruction of Right Certificates..........    6
Section   9.  Company Covenants Concerning Securities and Rights..........    7
Section  10.  Record Date.................................................    8
Section  11.  Adjustment of Purchase Price, Number and Kind of Securities
              or Number of Rights.........................................    8
Section  12.  Certificate of Adjusted Purchase Price or Number of
              Securities..................................................   13
Section  13.  Consolidation, Merger or Sale or Transfer of Assets or
              Earning Power...............................................   13
Section  14.  Fractional Rights and Fractional Securities.................   15
Section  15.  Rights of Action............................................   15
Section  16.  Agreement of Rights Holders.................................   15
Section  17.  Right Certificate Holder Not Deemed a Shareholder...........   16
Section  18.  Concerning the Rights Agent.................................   16
Section  19.  Merger or Consolidation or Change of Name of Rights Agent...   16
Section  20.  Duties of Rights Agent......................................   17
Section  21.  Change of Rights Agent......................................   18
Section  22.  Issuance of New Right Certificates..........................   19
Section  23.  Redemption..................................................   19
Section  24.  Notice of Certain Events....................................   20
Section  25.  Notices.....................................................   20
Section  26.  Supplements and Amendments..................................   21
Section  27.  Exchange....................................................   21
Section  28.  Successors; Certain Covenants...............................   22
Section  29.  Benefits of this Agreement..................................   22
Section  30.  Determinations and Actions by the Board of Directors,
              etc.........................................................   22
Section  31.  Severability................................................   22
Section  32.  Governing Law...............................................   22
Section  33.  Counterparts................................................   22
Section  34.  Descriptive Headings........................................   22
Exhibit    A  Form of Right Certificate...................................  A-1
Exhibit    B  Summary of Rights to Purchase Common Shares.................  B-1
</TABLE>
<PAGE>   4
 
                                RIGHTS AGREEMENT
 
     This RIGHTS AGREEMENT, dated as of February 17, 1997 (this "Agreement"), is
made and entered into by and between Theragenics Corporation, a Delaware
corporation (the "Company"), and SunTrust Bank, Atlanta, a Georgia banking
corporation (the "Rights Agent").
 
                                    RECITALS
 
     WHEREAS, on February 14, 1997, the Board of Directors of the Company
authorized and declared a dividend distribution of one right ("Right") for each
share of Common Stock, par value $.01 per share, of the Company (a "Common
Share") outstanding as of the Close of Business (as hereinafter defined) on
February 28, 1997, (the "Record Date"), each Right initially representing the
right to purchase one Common Share, upon the terms and subject to the conditions
herein set forth, and further authorized and directed the issuance of one Right
with respect to each Common Share issued or delivered by the Company (whether
originally issued or delivered from the Company's treasury) after the Record
Date but prior to the earlier of the Distribution Date (as hereinafter defined)
and the Expiration Date (as hereinafter defined).
 
     NOW THEREFORE, 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 shall have the meanings indicated:
 
          (a) "Acquiring Person" shall mean any Person (other than the Company
     or any Subsidiary of the Company or any employee benefit or stock ownership
     plan of the Company or of any Subsidiary of the Company or any entity
     holding Common Shares for or pursuant to the terms of any such plan) who or
     which, together with all Affiliates and Associates of such Person, shall be
     the Beneficial Owner of 15% or more of the Common Shares then outstanding.
 
          (b) A Person shall be deemed the "Beneficial Owner" of, and to
     "beneficially own," any securities:
 
             (i) which such Person or any of such Person's Affiliates or
        Associates, directly or indirectly, has the right to acquire (whether
        such right is exercisable immediately or only after the passage of time)
        pursuant to any agreement, arrangement or understanding (whether or not
        in writing), or upon the exercise of conversion rights, exchange rights,
        rights, warrants or options, or otherwise (in each case, other than upon
        exercise or exchange of the Rights); provided, however, that a Person
        shall not be deemed the Beneficial Owner of, or to beneficially own,
        securities tendered pursuant to a tender or exchange offer made by or on
        behalf of such Person or any of such Person's Affiliates or Associates
        until such tendered securities are accepted for purchase or exchange; or
 
             (ii) which such Person or any of such Person's Affiliates or
        Associates, directly or indirectly, has the right to vote or dispose of,
        including pursuant to any agreement, arrangement or understanding
        (whether or not in writing); or
 
             (iii) of which any other Person is the Beneficial Owner, if such
        Person or any of such Person's Affiliates or Associates has any
        agreement, arrangement or understanding (whether or not in writing) with
        such other Person (or any of such other Person's Affiliates or
        Associates) with respect to acquiring, holding, voting or disposing of
        any securities of the Company;
 
     provided, however, that a Person shall not be deemed the Beneficial Owner
     of, or to beneficially own, any security (A) if such Person has the right
     to vote such security pursuant to an agreement, arrangement or
     understanding (whether or not in writing) which (1) arises solely from a
     revocable proxy given to such Person in response to a public proxy or
     consent solicitation made pursuant to, and in accordance with, the
     applicable rules and regulations of the Exchange Act and (2) is not also
     then reportable on Schedule 13D under the Exchange Act (or any comparable
     or successor report), or (B) if such beneficial ownership arises solely as
     a result of such Person's status as a "clearing agency", as defined in
     Section 3(a)(23) of the Exchange Act; and provided, further, that nothing
     in this paragraph (c) shall cause a Person engaged
<PAGE>   5
 
     in business as an underwriter of securities to be the Beneficial Owner of,
     or to beneficially own, any securities acquired through such Person's
     participation in good faith in an underwriting syndicate until the
     expiration of 40 calendar days after the date of such acquisition, or such
     later date as the Board of Directors of the Company may determine in any
     specific case.
 
          (c) "Business Day" shall mean any day other than a Saturday, Sunday or
     a day on which banking institutions in the State of Georgia (or such other
     state in which the principal office of the Rights Agent is located) are
     authorized or obligated by law or executive order to close.
 
          (d) "Close of Business" on any given date shall mean 5:00 P.M.,
     Eastern time, on such date; provided, however, that if such date is not a
     Business Day it shall mean 5:00 P.M., Eastern time, on the next succeeding
     Business Day.
 
          (e) "Common Shares" when used with reference to the Company shall mean
     the Common Stock, par value $.01 per share, of the Company; provided,
     however, that, if the Company is the continuing or surviving corporation in
     a transaction described in Section 11(a)(ii) or Section 13(a)(ii) hereof,
     "Common Shares" when used with reference to the Company shall mean the
     capital stock or equity security with the greatest aggregate voting power
     of the Company. "Common Shares" when used with reference to any corporation
     or other legal entity, other than the Company, including an Issuer, shall
     mean the capital stock or equity security with the greatest aggregate
     voting power of such corporation or other legal entity.
 
          (f) "Company" shall mean Theragenics Corporation, a Delaware
     corporation.
 
          (g) "Distribution Date" shall mean the earliest of: (i) the Close of
     Business on the tenth calendar day (or, unless the Distribution Date shall
     have previously occurred, such later date as may be specified by the Board
     of Directors of the Company) after the Share Acquisition Date, (ii) the
     Close of Business on the tenth Business Day (or, unless the Distribution
     Date shall have previously occurred, such later date as may be specified by
     the Board of Directors of the Company) after the date of the commencement
     of a tender or exchange offer by any Person (other than the Company or any
     Subsidiary of the Company or any employee benefit or stock ownership plan
     of the Company or of any Subsidiary of the Company or any entity holding
     Common Shares for or pursuant to the terms of any such plan), if upon the
     consummation thereof such Person would be the Beneficial Owner of 15% or
     more of the outstanding Common Shares, and (iii) the Close of Business on
     the tenth calendar day after the first date of public announcement by the
     Company or an Acquiring Person (by press release, filing made with the
     Securities and Exchange Commission or otherwise) of the first occurrence of
     a Triggering Event; provided, however, that if the earliest of such dates
     would otherwise occur prior to the Record Date, the Distribution Date shall
     mean the Close of Business on the Record Date.
 
          (h) "Exchange Act" shall mean the Securities Exchange Act of 1934, as
     amended.
 
          (i) "Expiration Date" shall mean the earliest of (i) the Close of
     Business on the Final Expiration Date, (ii) the time at which the Rights
     are redeemed as provided in Section 23 hereof, and (iii) the time at which
     all exercisable Rights are exchanged as provided in Section 27 hereof.
 
          (j) "Final Expiration Date" shall mean the tenth anniversary of the
     Record Date.
 
          (k) "Flip-in Event" shall mean any event described in clauses (A), (B)
     or (C) of Section 11(a)(ii) hereof.
 
          (l) "Flip-over Event" shall mean any event described in subsections
     (i), (ii) or (iii) of Section 13(a) hereof.
 
          (m) "Issuer" shall have the meaning set forth in Section 13(b) hereof.
 
          (n) "NASDAQ" shall mean the National Association of Securities
     Dealers, Inc. Automated Quotation System.
 
                                        2
<PAGE>   6
 
          (o) "Person" shall mean any individual, firm, corporation, partnership
     or other legal entity, and shall include any successor (by merger or
     otherwise) of such entity.
 
          (p) "Purchase Price" shall mean initially $120.00 per Common Share and
     shall be subject to adjustment from time to time as provided in this
     Agreement.
 
          (q) "Redemption Price" shall mean $0.01 per Right, subject to
     adjustment by resolution of the Board of Directors of the Company to
     reflect any stock split, stock dividend or similar transaction occurring
     after the date hereof.
 
          (r) "Right" shall have the meaning set forth in the Recitals to this
     Agreement.
 
          (s) "Right Certificates" shall mean certificates evidencing the
     Rights, in substantially the form of Exhibit A attached hereto.
 
          (t) "Rights Agent" shall mean SunTrust Bank, Atlanta unless and until
     a successor Rights Agent shall have become such pursuant to the terms of
     this Agreement, and thereafter, "Rights Agent" shall mean such successor
     Rights Agent.
 
          (u) "Securities Act" shall mean the Securities Act of 1933, as
     amended.
 
          (v) "Share Acquisition Date" shall mean the first date of public
     announcement by the Company or an Acquiring Person (by press release,
     filing made with the Securities and Exchange Commission or otherwise) that
     an Acquiring Person has become such.
 
          (w) "Subsidiary" when used with reference to any Person shall mean any
     corporation or other legal entity of which a majority of the voting power
     of the voting equity securities or equity interests is owned, directly or
     indirectly, by such Person; provided, however, that for purposes of Section
     13(b) hereof, "Subsidiary" when used with reference to any Person shall
     mean any corporation or other legal entity of which at least 20% of the
     voting power of the voting equity securities or equity interests is owned,
     directly or indirectly, by such Person.
 
          (x) "Summary of Rights to Purchase Common Shares" shall mean the
     Summary of Rights to Purchase Common Shares, in substantially the form of
     Exhibit B attached hereto.
 
          (y) "Trading Day" shall mean any day on which the principal national
     securities exchange on which the Common Shares are listed or admitted to
     trading is open for the transaction of business or, if the Common Shares
     are not listed or admitted to trading on any national securities exchange,
     a Business Day.
 
          (aa) "Triggering Event" shall mean any Flip-in Event or Flip-over
     Event.
 
     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 also be, prior to the Distribution
Date, the holders of the Common Shares) in accordance with the terms and
conditions hereof, and the Rights Agent hereby accepts such appointment and
hereby certifies that it complies with the requirements of the New York Stock
Exchange governing transfer agents and registrars. The Company may from time to
time act as Co-Rights Agent or appoint such Co-Rights Agents as it may deem
necessary or desirable. Any actions which may be taken by the Rights Agent
pursuant to the terms of this Agreement may be taken by any such Co-Rights
Agent. To the extent that any Co-Rights Agent takes any action pursuant to this
Agreement, such Co-Rights Agent shall be entitled to all of the rights and
protections of, and subject to all of the applicable duties and obligations
imposed upon, the Rights Agent pursuant to the terms of this Agreement.
 
     Section 3.  Issue of Right Certificates.
 
     (a) Until the Distribution Date, (i) the Rights shall be evidenced by the
certificates representing Common Shares registered in the names of the record
holders thereof (which certificates representing Common Shares shall also be
deemed to be Right Certificates), together with a copy of the Summary of Rights,
(ii) the Rights shall be transferable only in connection with the transfer of
the underlying Common
 
                                        3
<PAGE>   7
 
Shares, and (iii) the surrender for transfer of any certificates evidencing
Common Shares in respect of which Rights have been issued, with or without a
copy of the Summary of Rights, shall also constitute the transfer of the Rights
associated with the Common Shares evidenced by such certificates.
 
     (b) As promptly as practicable after the Record Date, the Company shall
send a copy of the Summary of Rights by first-class, postage prepaid mail, to
each record holder of Common Shares as of the close of business on the Record
Date, at the address of such holder shown on the records of the Company as of
such date.
 
     (c) Rights shall be issued by the Company in respect of all Common Shares
(other than Common Shares issued upon the exercise or exchange of any Right)
issued or delivered by the Company (whether originally issued or delivered from
the Company's treasury) after the Record Date but prior to the earlier of the
Distribution Date and the Expiration Date. Certificates evidencing such Common
Shares shall have stamped on, impressed on, printed on, written on or otherwise
affixed to them the following legend or such similar legend as the Company may
deem appropriate and as is 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 transaction reporting system on which the Common Shares may
from time to time be listed or quoted, or to conform to usage:
 
        This Certificate also evidences and entitles the holder hereof to
        certain Rights as set forth in a Rights Agreement between Theragenics
        Corporation and SunTrust Bank, Atlanta dated as of February 17, 1997
        (the "Rights Agreement"), the terms of which are hereby incorporated
        herein by reference and a copy of which is on file at the principal
        executive offices of Theragenics Corporation. Under certain
        circumstances, as set forth in the Rights Agreement, such Rights may be
        redeemed, may expire, may be amended or may be evidenced by separate
        certificates and no longer be evidenced by this Certificate. Theragenics
        Corporation will mail to the holder of this Certificate a copy of the
        Rights Agreement without charge promptly after receipt of a written
        request therefor. Under certain circumstances as set forth in the Rights
        Agreement, Rights beneficially owned by an Acquiring Person or any
        Affiliate or Associate of an Acquiring Person (as such terms are defined
        in the Rights Agreement) may become null and void.
 
     (d) As promptly as practicable after the Distribution Date, the Company
shall prepare and execute, the Rights Agent will countersign and the Company
shall send or cause to be sent (and the Rights Agent shall, if requested, send),
by first-class, insured, postage prepaid mail, to each record holder of Common
Shares as of the Close of Business on the Distribution Date, at the address of
such holder shown on the records of the Company, a Right Certificate, evidencing
one Right for each Common Share so held, subject to adjustment. As of and after
the Distribution Date, the Rights shall be evidenced solely by such Right
Certificates.
 
     Section 4.  Form of Right Certificates.  The Right Certificates (and the
form of election to purchase and form of assignment to be printed on the reverse
thereof) shall be substantially in the form set forth as Exhibit A hereto with
such changes, 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 transaction
reporting system on which the Rights may from time to time be listed or quoted,
or to conform to usage. Subject to the provisions of Section 22 hereof, the
Right Certificates, whenever issued, on their face shall entitle the holders
thereof to purchase such number of Common Shares as shall be set forth therein
at the Purchase Price set forth therein, but the Purchase Price, the number and
kind of securities issuable upon exercise of each Right and the number of Rights
outstanding 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
its Chairman of the Board, President or any Vice President, either manually or
by facsimile signature, and shall have affixed thereto the Company's seal or a
facsimile thereof which shall be attested by the Secretary or an Assistant
Secretary of the Company, either manually or by facsimile signature. The Right
Certificates shall be manually countersigned
 
                                        4
<PAGE>   8
 
by the Rights Agent and shall not be valid for any purpose unless so
countersigned. In case any officer of the Company who shall have signed any of
the Right Certificates shall cease to be such officer of the Company before
countersignature by the Rights Agent and issuance and delivery by the Company,
such Right Certificates, nevertheless, may be countersigned by the Rights Agent,
and issued and delivered by the Company with the same force and effect as though
the person who signed such Right Certificates had not ceased to be such officer
of the Company; and any Right Certificate may be signed on behalf of the Company
by any person who, at the actual date of the execution of such Right
Certificate, shall be a proper officer of the Company to sign such Right
Certificate, although at the date of the execution of this Rights Agreement any
such person was not such an officer.
 
     (b) Following the Distribution Date, the Rights Agent shall keep or cause
to be kept, at the principal office of the Rights Agent designated for such
purpose and at such other offices 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 any transaction reporting system on
which the Rights may from time to time be listed or quoted, 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(d) and 14 hereof, at any time
after the Close of Business on the Distribution Date and prior to the Expiration
Date, any Right Certificate or Right Certificates representing exercisable
Rights 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 Common Shares (or other securities, as the case may be) as the
Right Certificate or Right Certificates surrendered then entitled such holder
(or former holder in the case of a transfer) to purchase. Any registered holder
desiring to transfer, split up, combine or exchange any such Right Certificate
shall make such request in writing delivered to the Rights Agent, and shall
surrender the Right Certificate or Right Certificates to be transferred, split
up, combined or exchanged at the principal office of the Rights Agent designated
for such purpose. Thereupon or as promptly as practicable thereafter, subject to
the provisions of Sections 7(d) and 14 hereof, the Company shall prepare,
execute and deliver to the Rights Agent, and the Rights Agent shall countersign
and deliver 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) 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 reimbursement to the Company and
the Rights Agent of all reasonable expenses incidental thereto, and upon
surrender to the Rights Agent and cancellation of the Right Certificate if
mutilated, the Company shall prepare, execute and deliver a new Right
Certificate of like tenor to the Rights Agent and the Rights Agent shall
countersign and deliver such new Right Certificate to the registered holder in
lieu of the Right Certificate so lost, stolen, destroyed or mutilated.
 
     Section 7.  Exercise of Rights; Purchase Price; Expiration Date of Rights.
 
     (a) The registered holder of any Right Certificate may exercise the Rights
evidenced thereby (except as otherwise provided herein) in whole or in part at
any time after the Distribution Date and prior to the Expiration Date, upon
surrender of the Right Certificate, with the form of election to purchase on the
reverse side thereof duly executed, to the Rights Agent at the office or offices
of the Rights Agent designated for such purpose, together with payment in cash,
in lawful money of the United States of America by certified check or bank draft
payable to the order of the Company equal to the sum of (i) the exercise price
for the total number of securities as to which such surrendered Rights are
exercised and (ii) an amount equal to any applicable transfer tax required to be
paid by the holder of such Right Certificate in accordance with the provisions
of Section 9 hereof. In lieu of the cash payment referred to in the immediately
preceding sentence, following the occurrence of a Triggering Event the
registered holder of a Right Certificate may exercise the Rights
 
                                        5
<PAGE>   9
 
evidenced thereby (except as otherwise provided herein) in whole or in part upon
surrender of the Right Certificate as described above together with an election
to exercise such Rights without payment of cash on the reverse side thereof duly
completed. With respect to any Rights as to which such an election is made, the
holder shall receive a number of Common Shares or other securities having a
value equal to the difference between (i) the value of the Common Shares or
other securities that would have been issuable upon payment of the cash amount
as described above, and (ii) the amount of such cash payment. For purposes of
this Section 7(a), the value of any Common Share or other security shall be the
current per share market price of a Common Share (determined pursuant to Section
11(d) hereof) on the Trading Day immediately preceding the date of the first
occurrence of a Triggering Event.
 
     (b) Upon receipt of a Right Certificate representing exercisable Rights
with the form of election to purchase duly executed, accompanied by either
payment as described above or a duly completed election to exercise without
payment of cash, the Rights Agent shall promptly (i) requisition from any
transfer agent of the Common Shares (or make available, if the Rights Agent is
the transfer agent) certificates representing the number of Common Shares to be
purchased (and the Company hereby irrevocably authorizes and directs its
transfer agent to comply with all such requests), (ii) after receipt of such
certificates, 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, (iii) when appropriate, requisition from the
Company or any transfer agent therefor (or make available, if the Rights Agent
is the transfer agent) certificates representing the number of equivalent common
shares to be issued in lieu of the issuance of Common Shares in accordance with
the provisions of Section 11(a)(iii) hereof, (iv) when appropriate, after
receipt of such certificates, 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, (v) when appropriate,
requisition from the Company the amount of cash to be paid in lieu of the
issuance of fractional shares in accordance with the provisions of Section 14
hereof or in lieu of the issuance of Common Shares in accordance with the
provisions of Section 11(a)(iii) hereof, (vi) when appropriate, after receipt,
deliver such cash to or upon the order of the registered holder of such Right
Certificate, and (vii) when appropriate, deliver any due bill or other
instrument provided to the Rights Agent by the Company for delivery to the
registered holder of such Right Certificate as provided by Section 11(l) hereof.
 
     (c) In case the registered holder of any Right Certificate shall exercise
less than all the Rights evidenced thereby, the Company shall prepare, execute
and deliver a new Right Certificate evidencing Rights equivalent to the Rights
remaining unexercised and the Rights Agent shall countersign and deliver such
new Right Certificate to the registered holder of such Right Certificate or to
his duly authorized assigns, subject to the provisions of Section 14 hereof.
 
     (d) 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 any purported transfer, split up, combination or exchange of any
Right Certificate pursuant to Section 6 hereof or exercise of a Right
Certificate as set forth in this Section 7 unless the registered holder of such
Right Certificate shall have (i) completed and signed the certificate following
the form of assignment or form of election to purchase, as applicable, set forth
on the reverse side of the Right Certificate surrendered for such transfer,
split up, combination, exchange or exercise, and (ii) provided such additional
evidence of the identity of the Beneficial Owner (or former Beneficial Owner) or
Affiliates or Associates thereof as the Company shall have reasonably requested.
 
     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
stock transfer agents, be delivered to the Rights Agent for cancellation or in
cancelled form, or, if surrendered to the Rights Agent, shall be cancelled by
it, and no Right Certificates shall be issued in lieu thereof except as
expressly permitted by 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
cancelled Right Certificates to the Company, or shall, at the written request of
the Company,
 
                                        6
<PAGE>   10
 
destroy such cancelled Right Certificates, and in such case shall deliver a
certificate of destruction thereof to the Company.
 
     Section 9.  Company Covenants Concerning Securities and Rights.  The
Company covenants and agrees that:
 
     (a) So long as the Common Shares issuable upon the exercise of the Rights
may be listed on a national securities exchange, it shall endeavor to cause,
from and after such time as the Rights become exercisable, all securities
reserved for issuance upon the exercise of Rights to be listed on such exchange
upon official notice of issuance.
 
     (b) It shall take all such action as may be necessary to ensure that all
Common Shares and/or other securities delivered upon exercise of Rights, at the
time of delivery of the certificates for such securities shall be (subject to
payment of the Purchase Price) duly and validly authorized and issued, fully
paid and nonassessable securities.
 
     (c) It shall pay when due and payable any and all federal and state
transfer taxes and charges that may be payable in respect of the issuance or
delivery of the Right Certificates and of any certificates representing
securities issued upon the exercise of Rights; provided, however, that the
Company shall not be required to pay any transfer tax or charge 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 representing securities
issued upon the exercise of Rights 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 representing securities issued upon the
exercise of any Rights until any such tax or charge shall have been paid (any
such tax or charge being payable by the 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.
 
     (d) It shall use its best efforts (i) to file on an appropriate form, as
soon as practicable following the later of the first occurrence of a Triggering
Event or the Distribution Date, a registration statement under the Securities
Act with respect to the securities issuable upon exercise of the Rights, (ii) to
cause such registration statement to become effective as soon as practicable
after such filing, and (iii) to cause such registration statement to remain
effective (with a prospectus at all times meeting the requirements of the Act)
until the earlier of (A) the date as of which the Rights are no longer
exercisable for such securities and (B) the Expiration Date. The Company shall
also take such action as may be appropriate under, or to ensure compliance with,
the securities or "blue sky" laws of the various states in connection with the
exercisability of the Rights. The Company may temporarily suspend, for a period
of time after the date set forth in clause (i) of the first sentence of this
Section 9(d), the exercisability of the Rights in order to prepare and file such
registration statement and to permit it to become effective. Upon any such
suspension, the Company shall issue a public announcement stating that the
exercisability of the Rights has been temporarily suspended, as well as a public
announcement at such time as the suspension is no longer in effect. In addition,
if the Company shall determine that a registration statement should be filed
under the Securities Act or any state securities laws following the Distribution
Date, the Company may temporarily suspend the exercisability of the Rights in
each relevant jurisdiction until such time as a registration statement has been
declared effective and, 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 anything in this Agreement to
the contrary, the Rights shall not be exercisable in any jurisdiction if the
requisite registration or qualification in such jurisdiction shall not have been
effected or the exercise of the Rights shall not be permitted under applicable
law.
 
     (e) Notwithstanding anything in this Agreement to the contrary, after the
Distribution Date it shall not, except as permitted by Section 23 or Section 26
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 eliminate or
otherwise diminish the benefits intended to be afforded by the Rights.
 
                                        7
<PAGE>   11
 
     (f) In the event that the Company is obligated to issue other securities of
the Company and/or pay cash pursuant to Sections 11, 13 or 14 hereof, it shall
make all arrangements necessary so that such other securities and/or cash are
available for distribution by the Rights Agent, if and when appropriate.
 
     Section 10.  Record Date.  Each Person in whose name any certificate
representing Common Shares is issued upon the exercise of Rights shall for all
purposes be deemed to have become the holder of record of the Common Shares
represented thereby on, and such certificate shall be dated, the date upon which
the Right Certificate evidencing such Rights was duly surrendered and payment of
the Purchase Price (and all applicable transfer taxes) was made; provided,
however, that if the date of such surrender and payment is a date upon which the
Common Shares transfer books of the Company are closed, such Person shall be
deemed to have become the record holder of such securities on, and such
certificate shall be dated, the next succeeding Business Day on which the Common
Shares transfer books of the Company are open. Prior to the exercise of the
Rights evidenced thereby, the holder of a Right Certificate shall not be
entitled to any rights of a shareholder of the Company with respect to
securities for which the Rights shall be exercisable, including, without
limitation, the right to vote, to receive dividends or other distributions or to
exercise any preemptive rights, and shall not be entitled to receive any notice
of any proceedings of the Company, except as provided herein.
 
     Section 11.  Adjustment of Purchase Price, Number and Kind of Securities or
Number of Rights.  The Purchase Price, the number and kind of securities
issuable 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 that the Company shall at any time after the date of
this Agreement (A) declare a dividend on the Common Shares payable in Common
Shares, (B) subdivide the outstanding Common Shares, (C) combine the outstanding
Common Shares into a smaller number of shares or (D) issue any shares of its
capital stock in a reclassification of the Common Shares (including any such
reclassification in connection with a consolidation or merger in which the
Company is the continuing or surviving corporation), 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/or the number and/or
kind of shares of capital stock issuable on such date upon exercise of a Right,
shall be proportionately adjusted so that the holder of any Right exercised
after such time shall be entitled to receive upon payment of the Purchase Price
then in effect 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 Common Shares transfer books of the Company were open, the holder of
such Right would have owned upon such exercise and been entitled to receive by
virtue of such dividend, subdivision, combination or reclassification. If an
event occurs which would require an adjustment under both this Section 11(a)(i)
and Section 11(a)(ii) hereof or Section 13 hereof, the adjustment provided for
in this Section 11(a)(i) shall be in addition to, and shall be made prior to,
any adjustment required pursuant to Section 11(a)(ii) or Section 13 hereof.
 
     (ii) Subject to the provisions of Section 27 hereof, in the event that:
 
          (A) any Acquiring Person or any Affiliate or Associate of any
     Acquiring Person, at any time after the date of this Agreement, directly or
     indirectly, shall (1) merge into the Company or otherwise combine with the
     Company and the Company shall be the continuing or surviving corporation of
     such merger or combination (other than in a transaction subject to Section
     13 hereof), (2) merge or otherwise combine with any Subsidiary of the
     Company, (3) in one or more transactions (other than in connection with the
     exercise or exchange of Rights or the exercise or conversion of securities
     exercisable for or convertible into shares of any class of capital stock of
     the Company or any of its Subsidiaries) transfer any assets to the Company
     or any of its Subsidiaries in exchange (in whole or in part) for shares of
     any class of capital stock of the Company or any of its Subsidiaries or for
     securities exercisable for or convertible into shares of any class of
     capital stock of the Company or any of its Subsidiaries, or otherwise
     obtain from the Company or any of its Subsidiaries, with or without
     consideration, any additional shares of any class of capital stock of the
     Company or any of its Subsidiaries or securities exercisable for or
     convertible into shares of any class of capital stock of the Company or any
     of its Subsidiaries (other than as part of a pro rata distribution to all
     holders of such shares of any class of capital stock of the Company,
 
                                        8
<PAGE>   12
 
     or any of its Subsidiaries), (4) sell, purchase, lease, exchange, mortgage,
     pledge, transfer or otherwise dispose (in one or more transactions), to,
     from, with or of, as the case may be, the Company or any of its
     Subsidiaries (other than in a transaction subject to Section 13 hereof),
     assets, including securities, on terms and conditions less favorable to the
     Company than the Company would be able to obtain in arm's-length
     negotiation with an unaffiliated third party, (5) receive any compensation
     from the Company or any of its Subsidiaries other than compensation as a
     director or for full-time employment as a regular employee, in either case,
     at rates in accordance with the Company's (or its Subsidiaries') past
     practices, or (6) receive the benefit, directly or indirectly (except
     proportionately as a shareholder), of any loans, advances, guarantees,
     pledges or other financial assistance or any tax credits or other tax
     advantage provided by the Company or any of its Subsidiaries; or
 
          (B) during such time as there is an Acquiring Person, there shall be
     any reclassification of securities (including any reverse stock split), or
     recapitalization of the Company, or any merger or consolidation of the
     Company with any of its Subsidiaries or any other transaction or series of
     transactions involving the Company or any of its Subsidiaries (whether or
     not with or into or otherwise involving an Acquiring Person), other than a
     transaction subject to Section 13 hereof, which has the effect, directly or
     indirectly, of increasing by more than 1% the proportionate share of the
     outstanding shares of any class of equity securities or of securities
     exercisable for or convertible into equity securities of the Company or any
     of its Subsidiaries of which an Acquiring Person or any Affiliate or
     Associate of any Acquiring Person, is the Beneficial Owner; or
 
          (C) any Person (other than the Company or any Subsidiary of the
     Company or any employee benefit or stock ownership plan of the Company or
     of any Subsidiary of the Company or any entity holding Common Shares for or
     pursuant to the terms of any such plan) who or which, together with all
     Affiliates and Associates of such Person, shall at any time after date of
     this Agreement, become the Beneficial Owner of 20% or more of the Common
     Shares then outstanding (other than pursuant to any transaction set forth
     in Section 13(a) hereof); provided, however, that a Person shall not be
     deemed to have become the Beneficial Owner of 20% or more of the Common
     Shares then outstanding for the purposes of this Section 11(a)(ii)(C)
     solely as a result of a reduction in the number of Common Shares
     outstanding unless and until such time as (1) such Person or any Affiliate
     or Associate of such Person shall thereafter become the Beneficial Owner of
     any additional Common Shares other than as a result of a stock dividend,
     stock split or similar transaction effected by the Company in which all
     holders of Common Shares are treated equally, or (2) any other Person who
     is the Beneficial Owner of any Common Shares shall thereafter become an
     Affiliate or Associate of such Person,
 
then, and in each such case, proper provision shall be made so that each holder
of a Right, except as provided below, shall thereafter have a right to receive,
upon exercise thereof in accordance with the terms of this Agreement at an
exercise price per Right equal to the product of the then-current Purchase Price
multiplied by the number of Common Shares for which a Right was exercisable
immediately prior to the first occurrence of a Triggering Event, such number of
Common Shares as shall equal the result obtained by (x) multiplying the
then-current Purchase Price by the number of Common Shares for which a Right was
exercisable immediately prior to the first occurrence of a Triggering Event, and
dividing that product by (y) 50% of the current per share market price of the
Common Shares (determined pursuant to Section 11(d) hereof) on the date of the
first occurrence of a Triggering Event. Notwithstanding anything in this
Agreement to the contrary, from and after the later of the Distribution Date and
the first occurrence of a Flip-in Event, (1) any Rights that are or were
acquired or beneficially owned by any Acquiring Person (or any Affiliate or
Associate of such Acquiring Person) shall be void and any holder of such Rights
shall thereafter have no right to exercise such Rights under any provision of
this Agreement, (2) no Right Certificate shall be issued pursuant to this
Agreement that represents Rights beneficially owned by an Acquiring Person or
any Affiliate or Associate thereof, (3) no Right Certificate shall be issued at
any time upon the transfer of any Rights to an Acquiring Person or any Affiliate
or Associate thereof or to any nominee of such Acquiring Person or Affiliate or
Associate thereof, and (4) any Right Certificate delivered to the Rights Agent
for transfer to an Acquiring Person or any Affiliate or Associate thereof shall
be cancelled.
 
                                        9
<PAGE>   13
 
     (iii) Upon the occurrence of a Flip-in Event, if there shall not be
sufficient Common Shares authorized but unissued or issued but not outstanding
to permit the issuance of all the Common Shares issuable in accordance with
subsection (ii) hereof upon the exercise of a Right, the Board of Directors of
the Company shall use its best efforts promptly to authorize and, subject to the
provisions of Section 9(d) hereof, make available for issuance additional Common
Shares or other equity securities of the Company having equivalent voting rights
and an equivalent value (as determined in good faith by the Board of Directors
of the Company) to the Common Shares (for purposes of this Section 11(a)(iii),
"equivalent common shares"). In the event that equivalent common shares are so
authorized, upon the exercise of a Right in accordance with the provisions of
Section 7 hereof, the registered holder shall be entitled to receive (A) Common
Shares, to the extent any are available and (B) a number of equivalent common
shares, which the Board of Directors of the Company shall have determined in
good faith to have a value equivalent to the excess of (x) the aggregate current
per share market value of all the Common Shares issuable in accordance with
subsection (ii) hereof upon the exercise of a Right (the "Exercise Value") over
(y) the aggregate current per share market value of any Common Shares available
for issuance upon the exercise of such Right; provided, however, that if at any
time after 90 calendar days after the first occurrence of a Flip-in Event, there
shall not be sufficient Common Shares and/or equivalent common shares available
for issuance upon the exercise of a Right, then the Company shall be obligated
to deliver, upon the surrender of such Right and without requiring payment of
the Purchase Price, Common Shares (to the extent available), equivalent common
shares (to the extent available) and then cash (to the extent permitted by
applicable law and any agreements or instruments to which the Company is a party
in effect immediately prior to the first occurrence of any Flip-in Event), which
securities and cash shall have an aggregate value equal to the excess of (1) the
Exercise Value over (2) the product of the then-current Purchase Price
multiplied by the number of Common Shares for which a Right was exercisable
immediately prior to the first occurrence of a Triggering Event. To the extent
that any legal or contractual restrictions prevent the Company from paying the
full amount of cash payable in accordance with the foregoing sentence, the
Company shall pay to holders of the Rights as to which such payments are being
made all amounts which are not then restricted on a pro rata basis and shall
continue to make payments on a pro rata basis as funds become available until
the full amount due to each such Rights holder has been paid.
 
     (b) In the event that the Company shall fix a record date for the issuance
of rights, options or warrants to all holders of Common Shares entitling them
(for a period expiring within 45 calendar days after such record date) to
subscribe for or purchase Common Shares (or securities having equivalent rights,
privileges and preferences as the Common Shares (for purposes of this Section
11(b), "equivalent common shares")) or securities convertible into Common Shares
or equivalent common shares at a price per Common Share or equivalent common
share (or having a conversion price per share, if a security convertible into
Common Shares or equivalent common shares) less than the current per share
market price of the Common Shares (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 Common Shares outstanding on such record date plus the number of
Common Shares which the aggregate offering price of the total number of Common
Shares and/or equivalent common 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 per share market price and the denominator of which
shall be the number of Common Shares outstanding on such record date plus the
number of additional Common Shares and/or equivalent common shares to be offered
for subscription or purchase (or into which the convertible securities so to be
offered are initially convertible). In case such subscription price may be paid
in a consideration part or all of which shall be in a form other than cash, the
value of such consideration shall be as determined in good faith by the Board of
Directors of the Company, whose determination shall be described in a statement
filed with the Rights Agent. Common 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 the event that the Company shall fix a record date for the making of
a distribution to all holders of Common Shares (including any such distribution
made in connection with a consolidation or merger in which
 
                                       10
<PAGE>   14
 
the Company is the continuing or surviving corporation) of evidences of
indebtedness, cash (other than a regular periodic cash dividend), assets, stock
(other than a dividend payable in Common Shares) or subscription rights, options
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 current per share market price of
the Common Shares (as determined pursuant to Section 11(d) hereof) on such
record date or, if earlier, the date on which Common Shares begin to trade on an
ex-dividend or when-issued basis for such distribution, 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 evidences of indebtedness, cash, assets or stock so
to be distributed or of such subscription rights, options or warrants applicable
to one Common Share, and the denominator of which shall be such current per
share market price of the Common Shares. 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.
 
     (d) For the purpose of any computation hereunder, the "current per share
market price" of Common Shares on any date shall be deemed to be the average of
the daily closing prices per share of such Common Shares for the 30 consecutive
Trading Days immediately prior to such date; provided, however, that in the
event that the current per share market price of the Common Shares is determined
during a period following the announcement by the issuer of such Common Shares
of (i) a dividend or distribution on such Common Shares payable in such Common
Shares or securities convertible into such Common Shares (other than the Rights)
or (ii) any subdivision, combination or reclassification of such Common Shares,
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 take into account
ex-dividend trading or to reflect the current per share market price per Common
Share equivalent. The closing price for each day shall be the last sale price,
regular way, or, in case no such sale takes place on such day, the average of
the closing bid and asked prices, regular way, in either case as reported in the
principal consolidated transaction reporting system with respect to securities
listed or admitted to trading on the New York Stock Exchange or, if the Common
Shares 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
Common Shares are listed or admitted to trading or, if the Common Shares 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 Common Shares are not quoted by
any such organization, the average of the closing bid and asked prices as
furnished by a professional market maker making a market in the Common Shares
selected by the Board of Directors of the Company. If the Common Shares are not
publicly held or not so listed or traded, or not the subject of available bid
and asked quotes, "current per share 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) Except as set forth below, no adjustment in the Purchase Price shall be
required unless such adjustment would require an increase or decrease of at
least 1% in such 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
ten-thousandth of a Common Share or other 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 and (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 securities of the Company other than Common Shares, thereafter the number of
such other securities so receivable upon exercise of any Right shall be subject
to adjustment from time to time in a manner and on terms as nearly equivalent as
practicable to the provisions
 
                                       11
<PAGE>   15
 
with respect to the Common Shares contained in this Section 11, and the
provisions of Sections 7, 9, 10 and 13 hereof with respect to the Common Shares
shall apply on like terms to any such other securities.
 
     (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 Common Shares issuable
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) hereof, upon each adjustment of the Purchase Price as a result of
the calculations made in Section 11(b) and Section 11(c) hereof made with
respect to a distribution of subscription rights, options or warrants applicable
to Common Shares, each Right outstanding immediately prior to the making of such
adjustment shall thereafter evidence the right to purchase, at the adjusted
Purchase Price, that number of Common Shares (calculated to the nearest
one-thousandth a Common Share) obtained by (i) multiplying (x) the number of
Common Shares issuable upon exercise of a Right immediately prior to this
adjustment by (y) the Purchase Price in effect immediately prior to such
adjustment of the Purchase Price, and (ii) dividing the product so obtained by
the Purchase Price in effect immediately after such adjustment of the Purchase
Price.
 
     (i) The Company may elect, on or after the date of any adjustment of the
Purchase Price, to adjust the number of Rights in substitution for any
adjustment in the number of Common Shares issuable 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 Common Shares 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-thousandth) obtained by dividing the
Purchase Price in effect immediately prior to adjustment of the Purchase Price
by the Purchase Price in effect immediately after adjustment of the Purchase
Price. The Company shall make a public announcement of its election to adjust
the number of Rights, indicating the record date for the adjustment, and, if
known at the time, the amount of the adjustment to be made. This record date may
be the date on which the Purchase Price is adjusted or any day thereafter, but,
if the Right Certificates have been issued, shall be at least 10 calendar days
later than the date of the public announcement. If Right Certificates have been
issued, upon each adjustment of the number of Rights pursuant to this Section
11(i), the Company shall, as promptly as practicable, cause to be distributed to
holders of record of Right Certificates on such record date Right Certificates
evidencing, subject to the provisions of 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 may bear, at the option of the Company, the adjusted
Purchase Price) and shall be registered in the names of the holders of record of
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 or kind of securities issuable upon the exercise of the Rights, the Right
Certificates theretofore and thereafter issued may continue to express the
Purchase Price and the number and kind of securities which were expressed in the
initial Right Certificate 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 Common Shares or other
securities issuable upon exercise of the Rights, the Company shall take any
corporate action which may, in the opinion of its counsel, be necessary in order
that the Company may validly and legally issue fully paid and nonassessable
Common Shares or such other securities at such adjusted Purchase Price.
 
     (l) In any case in which this Section 11 shall require that an adjustment
in the Purchase Price be made effective as of a record date for a specified
event, the Company may elect to defer until the occurrence of such event the
issuance to the holder of any Right exercised after such record date the number
of Common Shares or other securities of the Company, if any, issuable upon such
exercise over and above the number of Common
 
                                       12
<PAGE>   16
 
Shares or other 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
Common Shares or other securities upon the occurrence of the event requiring
such adjustment.
 
     (m) Notwithstanding anything in this Agreement to the contrary, the Company
shall be entitled to make such reductions in the Purchase Price, in addition to
those adjustments expressly required by this Section 11, as and to the extent
that in its good faith judgment the Board of Directors of the Company shall
determine to be advisable in order that any (i) consolidation or subdivision of
the Common Shares, (ii) issuance wholly for cash of Common Shares at less than
the current per share market price therefor, (iii) issuance wholly for cash of
Common Shares or securities which by their terms are convertible into or
exchangeable for Common Shares, (iv) stock dividends, or (v) issuance of rights,
options or warrants referred to in this Section 11, hereafter made by the
Company to holders of its Common Shares shall not be taxable to such
shareholders.
 
     Section 12.  Certificate of Adjusted Purchase Price or Number of
Securities.  Whenever an adjustment is made as provided in Section 11 or Section
13 hereof, the Company shall promptly (a) prepare a certificate setting forth
such adjustment and a brief statement of the facts accounting for such
adjustment, (b) file with the Rights Agent and with each transfer agent for the
Common Shares, a copy of such certificate, and (c) if such adjustment is made
after the Distribution Date, mail a brief summary of such adjustment to each
holder of a Right Certificate in accordance with Section 25 hereof.
 
     Section 13.  Consolidation, Merger or Sale or Transfer of Assets or Earning
Power.
 
     (a) In the event that, following the Share Acquisition Date, directly or
indirectly:
 
          (i) the Company shall consolidate with, or merge with or into, any
     other Person and the Company shall not be the continuing or surviving
     corporation of such consolidation or merger; or
 
          (ii) any Person shall consolidate with the Company, or merge with or
     into the Company and the Company shall be the continuing or surviving
     corporation of such merger or consolidation and, in connection with such
     merger or consolidation, all or part of the Common Shares shall be changed
     into or exchanged for stock or other securities of any other Person 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 (including, without limitation,
     securities creating any obligation on the part of the Company and/or any of
     its Subsidiaries) representing in the aggregate more than 50% of the assets
     or earning power of the Company and its Subsidiaries (taken as a whole) to
     any Person or Persons,
 
then, and in each such case, proper provision shall be made so that (A) each
holder of a Right (except as otherwise provided herein) shall thereafter have
the right to receive, upon the exercise thereof in accordance with the terms of
this Agreement at an exercise price per Right equal to the product of the
then-current Purchase Price multiplied by the number of Common Shares for which
a Right was exercisable immediately prior to the first occurrence of a
Triggering Event, such number of validly authorized and issued, fully paid,
nonassessable and freely tradeable Common Shares of the Issuer, free and clear
of any liens, encumbrances and other adverse claims and not subject to any
rights of call or first refusal, as shall be equal to the result obtained by (x)
multiplying the then-current Purchase Price by the number of Common Shares for
which a Right is exercisable immediately prior to the first occurrence of a
Triggering Event and dividing that product by (y) 50% of the current per share
market price of the Common Shares of the Issuer (determined pursuant to Section
11(d) hereof), on the date of consummation of such Flip-over Event; (B) the
Issuer shall thereafter be liable for, and shall assume, by virtue of the
consummation of such Flip-over Event, all the obligations and duties of the
Company pursuant to this Agreement; (C) the term "Company" shall thereafter be
deemed to refer to the Issuer; and (D) the Issuer shall take such steps
(including, without limitation, the reservation of a sufficient number of its
Common Shares to permit the exercise of all outstanding Rights) in connection
with such consummation as may be necessary to assure that the provisions hereof
shall thereafter be applicable, as nearly as reasonably may be possible, in
relation to its Common Shares thereafter deliverable upon the exercise of the
Rights.
 
                                       13
<PAGE>   17
 
     (b) For purposes of this Section 13, "Issuer" shall mean (i) in the case of
any Flip-over Event described in Sections 13(a) (i) or (ii) above, the Person
that is the continuing, surviving, resulting or acquiring Person (including the
Company as the continuing or surviving corporation of a transaction described in
Section 13(a)(ii) above), and (ii) in the case of any Flip-over Event described
in Section 13(a)(iii) above, the Person that is the party receiving the greatest
portion of the assets or earning power (including, without limitation,
securities creating any obligation on the part of the Company and/or any of its
Subsidiaries) transferred pursuant to such transaction or transactions;
provided, however, that, in any such case, (A) if (1) no class of equity
security of such Person is, at the time of such merger, consolidation or
transaction and has been continuously over the preceding 12-month period,
registered pursuant to Section 12 of the Exchange Act, and (2) such Person is a
Subsidiary, directly or indirectly, of another Person, a class of equity
security of which is and has been so registered, the term "Issuer" shall mean
such other Person; and (B) in case such Person is a Subsidiary, directly or
indirectly, of more than one Person, a class of equity security of two or more
of which are and have been so registered, the term "Issuer" shall mean whichever
of such Persons is the issuer of the equity security having the greatest
aggregate market value. Notwithstanding the foregoing, if the Issuer in any of
the Flip-over Events listed above is not a corporation or other legal entity
having outstanding equity securities, then, and in each such case, (x) if the
Issuer is directly or indirectly wholly owned by a corporation or other legal
entity having outstanding equity securities, then all references to Common
Shares of the Issuer shall be deemed to be references to the Common Shares of
the corporation or other legal entity having outstanding equity securities which
ultimately controls the Issuer, and (y) if there is no such corporation or other
legal entity having outstanding equity securities, (I) proper provision shall be
made so that the Issuer shall create or otherwise make available for purposes of
the exercise of the Rights in accordance with the terms of this Agreement, a
kind or kinds of security or securities having a fair market value at least
equal to the economic value of the Common Shares which each holder of a Right
would have been entitled to receive if the Issuer had been a corporation or
other legal entity having outstanding equity securities; and (II) all other
provisions of this Agreement shall apply to the issuer of such securities as if
such securities were Common Shares.
 
     (c) The Company shall not consummate any Flip-over Event, unless the Issuer
shall have a sufficient number of authorized Common Shares (or other securities
as contemplated in Section 13(b) above) which have not been issued or reserved
for issuance to permit the exercise in full of the Rights in accordance with
this Section 13 and unless prior to such consummation the Company and the Issuer
shall have executed and delivered to the Rights Agent a supplemental agreement
providing for the terms set forth in subsections (a) and (b) of this Section 13
and further providing that as promptly as practicable after the consummation of
any Flip-over Event, the Issuer shall:
 
          (i) prepare and file a registration statement under the Securities
     Act, with respect to the Rights and the securities issuable upon exercise
     of the Rights on an appropriate form, and shall use its best efforts to
     cause such registration statement to (A) become effective as soon as
     practicable after such filing and (B) remain effective (with a prospectus
     at all times meeting the requirements of the Securities Act) until the
     Expiration Date;
 
          (ii) take all such action as may be appropriate under, or to ensure
     compliance with, the securities or "blue sky" laws of the various states in
     connection with the exercisability of the Rights; and
 
          (iii) deliver to holders of the Rights historical financial statements
     for the Issuer and each of its Affiliates which comply in all respects with
     the requirements for registration on Form 10 under the Exchange Act.
 
     (d) The provisions of this Section 13 shall similarly apply to successive
mergers or consolidations or sales or other transfers. In the event that a
Flip-over Event occurs at any time after the occurrence of a Flip-in Event, the
Rights which have not theretofore been exercised shall thereafter become
exercisable in the manner described in Section 13(a) hereof.
 
                                       14
<PAGE>   18
 
     Section 14.  Fractional Rights and Fractional Securities.
 
     (a) The Company shall not be required to issue fractions of Rights or to
distribute Right Certificates which evidence fractional Rights. In lieu of such
fractional Rights, the Company shall pay as promptly as practicable to the
registered holders of the Right Certificates with regard to which such
fractional Rights otherwise would 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 otherwise would have been 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 Common Shares
or other securities issuable upon exercise or exchange of the Rights or to
distribute certificates which evidence any such fractional securities. In lieu
of issuing any such fractional securities, the Company may pay to any Person to
whom or which such fractional securities would otherwise be issuable an amount
in cash equal to the same fraction of the current market value of one such
security. For purposes of this Section 14(b), the current market value of a
Common Share or other security issuable upon the exercise or exchange of Rights
shall be the closing price thereof (as determined in the same manner as set
forth for Common Shares in the second sentence of Section 11(d) hereof) for the
Trading Day immediately prior to the date of such exercise or exchange;
provided, however, that if neither the Common Shares nor any such other
securities are publicly held or listed or admitted to trading on any national
securities exchange, or the subject of available bid and asked quotes, the
current market value of one Common Share or such other security shall be
determined in good faith by the Board of Directors of the Company.
 
     Section 15.  Rights of Action.  All rights of action in respect of this
Agreement, excepting the rights of action given to the Rights Agent under
Section 18 hereof, are vested in the respective registered holders of the Right
Certificates (and, prior to the Distribution Date, the registered holders of the
Common Shares); and any registered holder of any Right Certificate (or, prior to
the Distribution Date, of the Common Shares), without the consent of the Rights
Agent or of the holder of any other Right Certificate (or, prior to the
Distribution Date, of the holder of any Common Shares), may in his own behalf
and for his own benefit enforce, and may institute and maintain any suit, action
or proceeding against the Company to enforce, or otherwise act in respect of,
his right to exercise the Rights evidenced by such Right Certificate or Common
Share certificate in the manner provided in such Right Certificate and in this
Agreement. Without limiting the foregoing or any remedies available to the
holders of Rights, it is specifically acknowledged that the holders of Rights
would not have an adequate remedy at law for any breach of this Agreement and
shall be entitled to specific performance of the obligations under this
Agreement, and injunctive relief against actual or threatened violations of the
obligations of any Person subject to this Agreement.
 
     Section 16.  Agreement of Rights Holders.  Every holder of a Right by
accepting the same consents and agrees with the Company and the Rights Agent and
with every other holder of a Right that:
 
          (a) Prior to the Distribution Date, the Rights shall be transferable
     only in connection with the transfer of the Common Shares;
 
                                       15
<PAGE>   19
 
          (b) After the Distribution Date, the Right Certificates are
     transferable only on the registry books of the Rights Agent if surrendered
     at the principal office of the Rights Agent designated for such purpose,
     duly endorsed or accompanied by a proper instrument of transfer;
 
          (c) The Company and the Rights Agent may deem and treat the person in
     whose name the Right Certificate (or, prior to the Distribution Date, the
     associated Common Share certificate) is registered as the absolute owner
     thereof and of the Rights evidenced thereby (notwithstanding any notations
     of ownership or writing on the Right Certificate or the associated Common
     Share 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;
 
          (d) Such holder expressly waives any right to receive any fractional
     Rights and any fractional securities upon exercise or exchange of a Right,
     except as otherwise provided in Section 14 hereof; and
 
          (e) Notwithstanding anything in this Agreement to the contrary,
     neither the Company nor the Rights Agent shall have any liability to any
     holder of a Right or other Person as a result of its inability to perform
     any of its obligations under this Agreement by reason of any preliminary or
     permanent injunction or other order, decree or ruling issued by a court of
     competent jurisdiction or by a governmental, regulatory or administrative
     agency or commission, or any statute, rule, regulation or executive order
     promulgated or enacted by any governmental authority, prohibiting or
     otherwise restraining performance of such obligation; provided, however,
     that the Company shall use its best efforts to have any such order, decree
     or ruling lifted or otherwise overturned as soon as possible.
 
     Section 17.  Right Certificate Holder Not Deemed a Shareholder.  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 Common Shares or any other
securities of the Company which may at any time be issuable upon the exercise of
the Rights represented thereby, nor shall anything contained herein or in any
Right Certificate be construed to confer upon the holder of any Right
Certificate, as such, any of the rights of a shareholder of the Company or any
right to vote for the election of directors or upon any matter submitted to
shareholders at any meeting thereof, or to give or withhold consent to any
corporate action, or to receive notice of meetings or other actions affecting
shareholders (except as provided in Section 24 hereof), or to receive dividends
or subscription rights, or otherwise, until the Right or Rights evidenced by
such Right Certificate shall have been exercised in accordance with the
provisions of this Agreement or exchanged pursuant to the provisions of Section
27 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, suit, action, proceeding or expense, incurred without gross
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.
 
     (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 evidencing Common Shares or 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.
 
     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
 
                                       16
<PAGE>   20
 
Rights Agent or any successor Rights Agent shall be a party, or any corporation
succeeding to the corporate trust business of the Rights Agent or any successor
Rights Agent, shall be the successor to the Rights Agent under this Agreement
without the execution or filing of any paper or any further act on the part of
any of the parties hereto, provided 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 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 any one of the Chairman of the Board, the
President or any Vice President 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 only for its own gross
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 and delivery 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 adjustment required under the provisions of
Section 11 or Section 13 hereof (including any adjustment which results in
Rights becoming void) or responsible for the manner, method or amount of any
such adjustment or the ascertaining of the existence of facts that would require
any such adjustment (except with respect to the exercise of Rights evidenced by
Right Certificates after actual notice of any such adjustment); nor shall it by
any act hereunder be deemed to make any representation or warranty as to the
authorization or reservation of any shares of stock or other securities to be
issued pursuant to this Agreement or any Right Certificate or as to whether any
shares of stock or other securities will, when issued, be validly authorized and
issued, fully paid and nonassessable.
 
                                       17
<PAGE>   21
 
     (f) The Company agrees that it will perform, execute, acknowledge and
deliver or cause to be performed, executed, acknowledged and delivered all such
further and other acts, instruments and assurances as may reasonably be required
by the Rights Agent for the carrying out or performing by the Rights Agent of
the provisions of this Agreement.
 
     (g) The Rights Agent is hereby authorized and directed to accept
instructions with respect to the performance of its duties hereunder from any
one of the Chairman of the Board, the President or any Vice President 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 to
be taken by it in good faith in accordance with instructions of any such
officer.
 
     (h) The Rights Agent and any shareholder, director, officer or employee of
the Rights Agent may buy, sell or deal in any of the Rights or other securities
of the Company or become pecuniarily interested in any transaction in which the
Company may be interested, or contract with or lend money to the Company or
otherwise act as fully and freely as though it were not Rights Agent under this
Agreement. Nothing herein shall preclude the Rights Agent from acting in any
other capacity for the Company or for any other legal entity.
 
     (i) The Rights Agent may execute and exercise any of the rights or powers
hereby vested in it or perform any duty hereunder either itself or by or through
its attorneys or agents, and the Rights Agent shall not be answerable or
accountable for any act, default, neglect or misconduct of any such attorneys or
agents or for any loss to the Company resulting from any such act, default,
neglect or misconduct, provided reasonable care was exercised in the selection
and continued employment thereof. The Rights Agent shall not be under any duty
or responsibility to insure compliance with any applicable federal or state
securities laws in connection with the issuance, transfer or exchange of Right
Certificates.
 
     (j) If, with respect to any Right Certificate surrendered to the Rights
Agent for exercise, transfer, split up, combination or exchange, the certificate
attached to the form of assignment or form of election to purchase, as the case
may be, has either not been completed or indicates an affirmative response to
clause 1 or 2 thereof, the Rights Agent shall not take any further action with
respect to such requested exercise, transfer, split up, combination or exchange,
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 calendar days' notice in writing mailed to the Company and to each
transfer agent of the Common Shares by registered or certified mail, and to the
holders of the Right Certificates by first-class mail. The Company may remove
the Rights Agent or any successor Rights Agent upon 30 calendar days' notice in
writing, mailed to the Rights Agent or successor Rights Agent, as the case may
be, and to each transfer agent of the Common Shares by registered or certified
mail, and to the holders of the Right Certificates by first-class mail. If the
Rights Agent shall resign or be removed or shall otherwise become incapable of
acting, the Company shall appoint a successor to the Rights Agent. If the
Company shall fail to make such appointment within a period of 30 calendar days
after giving notice of such removal or after it has been notified in writing of
such resignation or incapacity by the resigning or incapacitated Rights Agent or
by the holder of a 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 organized and doing
business under the laws of the United States or of the States of Georgia or New
York (or of any other state of the United States so long as such corporation is
authorized to do business as a banking institution in the States of Georgia or
New York), in good standing, having a principal office in the States of Georgia
or New York, which is authorized under such laws to exercise corporate trust
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,
 
                                       18
<PAGE>   22
 
conveyance, act or deed necessary for the purpose. Not later than the effective
date of any such appointment, the Company shall file notice thereof in writing
with the predecessor Rights Agent and each transfer agent of the Common Shares,
and mail a notice thereof in writing to the registered holders of the Right
Certificates. Failure to give any notice provided for in this Section 21,
however, or any defect therein, shall not affect the legality or validity of the
resignation or removal of the Rights Agent or the appointment of the successor
Rights Agent, as the case may be.
 
     Section 22.  Issuance of New Right Certificates.  Notwithstanding any of
the provisions of this Agreement or of the Rights to the contrary, the Company
may, at its option, issue new Right Certificates evidencing Rights in such form
as may be approved by its Board of Directors to reflect any adjustment or change
in the Purchase Price per share and the number or kind of securities issuable
upon exercise of the Rights made in accordance with the provisions of this
Agreement. In addition, in connection with the issuance or sale by the Company
of Common Shares following the Distribution Date and prior to the Expiration
Date, the Company (a) shall, with respect to Common Shares so issued or sold
pursuant to the exercise or conversion of securities issued prior to the
Distribution Date which are exercisable for, or convertible into, Common Shares,
and (b) may, in any other case, if deemed necessary, appropriate or desirable by
the Board of Directors of the Company, issue Right Certificates representing an
equivalent number of Rights as would have been issued in respect of such Common
Shares if they had been issued or sold prior to the Distribution Date, as
appropriately adjusted as provided herein as if they had been so issued or sold;
provided, however, that (i) no such Right Certificate shall be issued if, and to
the extent that, in its good faith judgment the Board of Directors of the
Company shall have determined that the issuance of such Right Certificate could
have a material adverse tax consequence to the Company or to the Person to whom
or which such Right Certificate otherwise would be issued, and (ii) no such
Right Certificate shall be issued if, and to the extent that, appropriate
adjustment otherwise shall have been made in lieu of the issuance thereof.
 
     Section 23.  Redemption.
 
     (a) Prior to the Expiration Date, the Board of Directors of the Company
may, at its option, redeem all but not less than all of the then-outstanding
Rights at the Redemption Price at any time prior to the Close of Business on the
later of (i) the Distribution Date and (ii) the Share Acquisition Date.
 
     (b) Immediately upon the action of the Board of Directors of the Company
ordering the redemption of the Rights, and without any further action and
without any notice, the right to exercise the Rights shall terminate and the
only right thereafter of the holders of Rights shall be to receive the
Redemption Price. Promptly after the action of its Board of Directors ordering
the redemption of the Rights, the Company shall publicly announce such action,
and within 10 calendar days thereafter, the Company shall give notice of such
redemption to the holders of the then-outstanding Rights by mailing such notice
to all such holders at their last addresses as they appear upon the registry
books of the Company; provided, however, that the failure to give, or any defect
in, any such notice shall not affect the validity of the redemption of the
Rights. Any notice which is mailed in the manner herein provided shall be deemed
given, whether or not the holder receives the notice. The notice of redemption
mailed to the holders of Rights shall state the method by which the payment of
the Redemption Price will be made. The Company may, at its option, pay the
Redemption Price in cash, Common Shares (based upon the current per share market
price of the Common Shares (determined pursuant to Section 11(d) hereof) at the
time of redemption) or any other form of consideration deemed appropriate by the
Board of Directors of the Company (based upon the fair market value of such
other consideration, determined by the Board of Directors of the Company in good
faith) or any combination thereof.
 
     (c) At any time following the Share Acquisition Date, the Board of
Directors of the Company may relinquish the right to redeem the Rights under
this Section 23 by duly adopting a resolution to that effect. Immediately upon
adoption of such resolution, the rights of the Board of Directors of the Company
to redeem the Rights shall terminate without further action and without any
notice. Promptly after adoption of such a resolution, the Company shall publicly
announce such action; provided, however, that the failure to give, or any defect
in, any such notice shall not affect the validity of the action of the Board of
Directors of the Company.
 
                                       19
<PAGE>   23
 
     Section 24.  Notice of Certain Events.
 
     (a) In case, after the Distribution Date, the Company shall propose (i) to
pay any dividend payable in stock of any class to the holders of Common Shares
or to make any other distribution to the holders of Common Shares (other than a
regular periodic cash dividend), (ii) to offer to the holders of Common Shares
rights, options or warrants to subscribe for or to purchase any additional
Common Shares or shares of stock of any class or any other securities, rights or
options, (iii) to effect any reclassification of its Common Shares (other than a
reclassification involving only the subdivision of outstanding Common Shares),
(iv) to effect any consolidation or merger into or with, or to effect any sale
or other transfer (or to permit one or more of its Subsidiaries to effect any
sale or other transfer), in one or more transactions, of assets or earning power
(including, without limitation, securities creating any obligation on the part
of the Company and/or any of its Subsidiaries) representing more than 50% of the
assets and earning power of the Company and its Subsidiaries, taken as a whole,
to any other Person or Persons, or (v) to effect the liquidation, dissolution or
winding up of the Company, then, in each such case, the Company shall give to
each holder of a Right Certificate, in accordance with Section 25 hereof, a
notice of such proposed action, which shall specify the record date for the
purposes of such stock dividend, distribution or offering of rights, options or
warrants, or the date on which such reclassification, consolidation, merger,
sale, transfer, liquidation, dissolution, or winding up is to take place and the
date of participation therein by the holders of the Common Shares, 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 calendar days prior to
the record date for determining holders of the Common Shares for purposes of
such action, and, in the case of any such other action, at least 10 calendar
days prior to the date of the taking of such proposed action or the date of
participation therein by the holders of the Common Shares, whichever shall be
the earlier.
 
     (b) In case any Triggering Event shall occur, then, in any such case, the
Company shall as soon as practicable thereafter give to the Rights Agent and
each holder of a Right Certificate, in accordance with Section 25 hereof, a
notice of the occurrence of such event, which shall specify the event and the
consequences of the event to holders of Rights.
 
     Section 25.  Notices.
 
     (a) 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:
 
              Theragenics Corporation
              1770 Indian Trail, Suite 440
              Norcross, Georgia 30093
              Attention: Bruce W. Smith
 
     (b) 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:
 
              SunTrust Bank, Atlanta
              P.O. Box 4625
              Atlanta, Georgia 30302
              Attention: Department Manager
 
     (c) 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 (or, if
prior to the Distribution Date, to the holder of any certificate evidencing
Common Shares) 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.
 
                                       20
<PAGE>   24
 
     Section 26.  Supplements and Amendments.  Prior to the Distribution Date
and subject to the last sentence of this Section 26, if the Company so directs,
the Company and the Rights Agent shall supplement or amend any provision of this
Agreement without the approval of any holders of certificates representing
Common Shares. From and after the Distribution Date and subject to the last
sentence of this Section 26, if the Company so directs, the Company and the
Rights Agent shall supplement or amend this Agreement without the approval of
any holders of Right Certificates in order (i) to cure any ambiguity, (ii) to
correct or supplement any provision contained herein which may be defective or
inconsistent with any other provisions herein, (iii) to shorten or lengthen any
time period hereunder, or (iv) to supplement or amend the provisions hereunder
in any manner which the Company may deem desirable, including, without
limitation, the addition of other events requiring adjustment to the Rights
under Sections 11 or 13 hereof or procedures relating to the redemption of the
Rights, which supplement or amendment shall not, in the good faith determination
of the Board of Directors of the Company, adversely affect the interests of the
holders of Right Certificates (other than an Acquiring Person or an Affiliate or
Associate of an Acquiring Person so long as the duties, liabilities and
indemnifications of the Rights Agent are not affected). Upon the delivery of a
certificate from an officer of the Company which states that the proposed
supplement or amendment is in compliance with the terms of this Section 26, the
Rights Agent shall execute such supplement or amendment; provided, however, that
the failure or refusal of the Rights Agent to execute such supplement or
amendment shall not affect the validity of any supplement or amendment adopted
by the Company, any of which shall be effective in accordance with the terms
thereof. Notwithstanding anything in this Agreement to the contrary, no
supplement or amendment shall be made which decreases the stated Redemption
Price or the period of time remaining until the Final Expiration Date or which
modifies a time period relating to when the Rights may be redeemed at such time
as the Rights are not then redeemable.
 
     Section 27.  Exchange.
 
     (a) The Board of Directors of the Company may, at its option, at any time
after the later of the Distribution Date and the first occurrence of a
Triggering Event, exchange all or part of the then-outstanding and exercisable
Rights (which shall not include Rights that have become void pursuant to the
provisions of Section 11(a)(ii) hereof) for Common Shares at an exchange ratio
of one Common Share per Right, appropriately adjusted to reflect any stock
split, stock dividend or similar transaction occurring after the date hereof
(such exchange ratio being hereinafter referred to as the "Exchange Ratio").
Notwithstanding the foregoing, the Board of Directors shall not be empowered to
effect such exchange at any time after any Person (other than the Company, any
Subsidiary of the Company, any employee benefit plan of the Company or any such
Subsidiary, or any entity holding Common Shares for or pursuant to the terms of
any such plan), who or which, together with all Affiliates and Associates of
such Person, becomes the Beneficial Owner of 50% or more of the Common Shares
then outstanding.
 
     (b) Immediately upon the action of the Board of Directors of the Company
ordering the exchange of any Rights pursuant to Section 27(a) hereof, and
without any further action and without any notice, the right to exercise such
Rights shall terminate and the only right with respect to such Rights thereafter
of the holder of such Rights shall be to receive that number of Common Shares
equal to the number of such Rights held by such holder multiplied by the
Exchange Ratio. Promptly after the action of the Board of Directors of the
Company ordering the exchange of any Rights pursuant to Section 27(a) hereof,
the Company shall publicly announce such action, and within 10 calendar days
thereafter shall give notice of any such exchange to all of the holders of such
Rights at their last addresses as they appear upon the registry books of the
Rights Agent; provided, however, that the failure to give, or any defect in,
such notice shall not affect the validity of such exchange. 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 shall state the method
by which the exchange of the Common Shares for Rights will be effected and, in
the event of any partial exchange, the number of Rights which will be exchanged.
Any partial exchange shall be effected pro rata based on the number of Rights
(other than Rights which have become void pursuant to the provisions of Section
11(a)(ii) hereof) held by each holder of Rights.
 
     (c) In any exchange pursuant to this Section 27, the Company, at its
option, may substitute for any Common Share exchangeable for a Right, (i)
equivalent common shares (as such term is used in
 
                                       21
<PAGE>   25
 
Section 11(a)(iii) hereof), (ii) cash, (iii) debt securities of the Company,
(iv) other assets, or (v) any combination of the foregoing, in any event having
an aggregate value which the Board of Directors of the Company shall have
determined in good faith to be equal to the current market value of one Common
Share (determined pursuant to Section 11(d) hereof) on the Trading Day
immediately preceding the date of exchange pursuant to this Section 27.
 
     Section 28.  Successors; Certain Covenants.  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 Shares) any legal or equitable right, remedy or claim under
this Agreement; but this Agreement shall be for the sole and exclusive benefit
of the Company, the Rights Agent and the registered holders of the Right
Certificates (or prior to the Distribution Date, the Common Shares).
 
     Section 30.  Determinations and Actions by the Board of Directors,
etc.  The Board of Directors of the corporation shall have the exclusive power
and authority to administer this Agreement and to exercise all rights and powers
specifically granted to the Board, or the corporation, 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 the Agreement,
whether a Person is an Acquiring Person and whether any proposed amendment
adversely affects the interests of the holders of Right Certificates). For all
purposes of this Agreement, any calculation of the number of Common Shares or
other securities outstanding at any particular time, including for purposes of
determining the particular percentage of such outstanding Common Shares or any
other securities of which any Person is the Beneficial Owner, shall be made in
accordance with the last sentence of Rule 13d-3(d)(1)(i) under the Exchange Act
as in effect on the date of this Agreement. All such actions, calculations,
interpretations and determinations (including, for purposes of clause (y) below,
all omissions with respect to the foregoing) which are done or made by the board
in good faith, shall (x) be final, conclusive and binding on the Corporation,
the Rights Agent, the holders of the Right Certificates and all other parties,
and (y) not subject the Board to any liability to the holders of the Right
Certificates.
 
     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.
 
     Section 32.  Governing Law.  This Agreement and each Right Certificate
issued hereunder shall be deemed to be a contract made under the internal
substantive laws of the State of Delaware and for all purposes shall be governed
by and construed in accordance with the internal substantive 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.
 
                                       22
<PAGE>   26
 
     IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
duly executed and their respective corporate seals to be hereunto affixed and
attested, all as of the day and year first above written.
 
<TABLE>
<S>                                                 <C>
[SEAL]
Attest:                                             THERAGENICS CORPORATION
 
By /s/ BRUCE W. SMITH                               By /s/ M. CHRISTINE JACOBS
 -------------------------------------------------  ----------------------------------------------
    Bruce W. Smith                                  M. Christine Jacobs
    Secretary
 
[SEAL]
Attest:                                             SUNTRUST BANK, ATLANTA
 
By /s/ SUE HAMPTON                                  By /s/ LETITIA RADFORD
 -------------------------------------------------  ----------------------------------------------
    Name: Sue Hampton                               Letitia Radford
  -----------------------------------------
    Title: Trust Officer
  -------------------------------------------
</TABLE>
 
                                       23
<PAGE>   27
 
                                                                       EXHIBIT A
 
                           Form of Right Certificate
 
Certificate No. R-                                           ____________ Rights
 
        NOT EXERCISABLE AFTER FEBRUARY 28, 2007 OR EARLIER IF REDEEMED. THE
        RIGHTS ARE SUBJECT TO REDEMPTION, AT THE OPTION OF THE COMPANY, AT $0.01
        PER RIGHT ON THE TERMS SET FORTH IN THE RIGHTS AGREEMENT. UNDER CERTAIN
        CIRCUMSTANCES SPECIFIED IN THE RIGHTS AGREEMENT, RIGHTS BENEFICIALLY
        OWNED BY AN ACQUIRING PERSON OR AN AFFILIATE OR AN ASSOCIATE OF AN
        ACQUIRING PERSON (AS SUCH TERMS ARE DEFINED IN THE RIGHTS AGREEMENT) MAY
        BECOME NULL AND VOID.
 
                               Right Certificate
 
                            THERAGENICS 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 February 17, 1997 (the "Rights Agreement"), between
Theragenics Corporation, a Delaware corporation (the "Company"), and SunTrust
Bank, Atlanta, a Georgia banking corporation (the "Rights Agent"), to purchase
from the Company at any time after the Distribution Date (as such term is
defined in the Rights Agreement) and prior to 5:00 P.M. (Eastern time) on
February 28, 2007 at the principal office or offices of the Rights Agent
designated for such purpose, one fully paid nonassessable share of common stock,
par value $.01 per share (the "Common Shares"), of the Company, at a purchase
price of $120.00 per Common Share (the "Purchase Price"), upon presentation and
surrender of this Right Certificate with the Form of Election to Purchase and
related Certificate duly executed. 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. The number of Rights evidenced by this Right Certificate (and the
number of Common Shares which may be purchased upon exercise thereof) set forth
above, and the Purchase Price set forth above, are the number and Purchase Price
as of February 28, 1997 based on the Common Shares as constituted at such date.
 
     As provided in the Rights Agreement, the Purchase Price and the number and
kind of securities issuable upon the exercise of the Rights evidenced by this
Right Certificate are subject to adjustment upon the happening of certain
events.
 
     This Right Certificate is subject to all of the terms, provisions and
conditions of the Rights Agreement, which terms, provisions and conditions are
hereby incorporated herein by reference and made a part hereof and to which
Rights Agreement reference is hereby made for a full description of the rights,
limitations of rights, obligations, duties and immunities of the Rights Agent,
the Company and the holders of the Right Certificates, which limitations of
rights include the temporary suspension of the exercisability of the Rights
under the circumstances specified in the Rights Agreement. Copies of the Rights
Agreement are on file at the above-mentioned office of the Rights Agent.
 
     Pursuant to the Rights Agreement, from and after the later of the
Distribution Date and the first occurrence of a Flip-in Event (as such term is
defined in the Rights Agreement), (i) any Rights that are or were acquired or
beneficially owned by any Acquiring Person (or any Affiliate or Associate of
such Acquiring Person) shall be void and any holder of such Rights shall
thereafter have no right to exercise such Rights under any provision of the
Rights Agreement, (ii) no Right Certificate shall be issued pursuant to the
Rights Agreement that represents Rights beneficially owned by an Acquiring
Person or any Affiliate or Associate thereof, (iii) no Right Certificate shall
be issued at any time upon the transfer of any Rights to an Acquiring Person or
any Affiliate or Associate thereof or to any nominee of such Acquiring Person or
Affiliate or
 
                                       A-1
<PAGE>   28
 
Associate thereof, and (iv) any Right Certificate delivered to the Rights Agent
for transfer to an Acquiring Person or any Affiliate or Associate thereof shall
be cancelled.
 
     This Right Certificate, with or without other Right Certificates, may be
transferred, split up, combined or exchanged for another Right Certificate or
Right Certificates, entitling the holder to purchase a like number of Common
Shares (or other securities, as the case may be) as the Right Certificate or
Right Certificates surrendered shall have entitled such holder (or former holder
in the case of a transfer) to purchase, upon presentation and surrender hereof
at the principal office of the Rights Agent designated for such purpose, with
the Form of Assignment (if appropriate) and the related Certificate duly
executed.
 
     Subject to the provisions of the Rights Agreement, the Rights evidenced by
this Certificate may be redeemed by the Company at its option at a redemption
price of $0.01 per Right. The Rights Agreement may be supplemented and amended
by the Company, as provided therein.
 
     The Company is not required to issue fractional Common Shares or other
securities issuable upon the exercise of any Right or Rights evidenced hereby.
In lieu of issuing such fractional Common Shares or other securities, the
Company may make a cash payment, 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 Common Shares
or of any other securities of the Company which may at any time be issuable upon
the exercise of the Right or Rights represented hereby, nor shall anything
contained herein or in the Rights Agreement be construed to confer upon the
holder hereof, as such, any of the rights of a shareholder of the Company or any
right to vote for the election of directors or upon any matter submitted to
shareholders at any meeting thereof, or to give or withhold consent to any
corporate action, or to receive notice of meetings or other actions affecting
shareholders (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 in accordance with
the provisions of the Rights Agreement.
 
     This Right Certificate shall not be valid or obligatory for any purpose
until it shall have been countersigned by the Rights Agent.
 
     WITNESS the facsimile signature of the proper officers of the Company and
its corporate seal. Dated as of          , 19  .
 
<TABLE>
<S>                                                         <C>
ATTEST                                                      Theragenics Corporation

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

 
[SEAL]
 
Countersigned:
 
SunTrust Bank, Atlanta
 
By
  ---------------------------------------------------
    Authorized Signature
</TABLE> 
                                       A-2
<PAGE>   29
 
                   Form of Reverse Side of Right Certificate
 
                               FORM OF ASSIGNMENT
 
                (To be executed by the registered holder if such
               holder desires to transfer the Right Certificate)
 
     FOR VALUE RECEIVED,
                        --------------------------------------------------------

hereby sells, assigns and transfers unto
                                        ----------------------------------------

- --------------------------------------------------------------------------------
                 (Please print name and address of transferee)
 
- --------------------------------------------------------------------------------
 
this Right Certificate, together with all right, title and interest therein, and
does hereby irrevocably constitute and appoint _______________  Attorney, to 
transfer the within Right ertificate on the books of the within-named Company,
with full power of substitution.
 
Dated:                     , 19
 
                                          --------------------------------------
                                          Signature
 
Signature Guaranteed:
 
                                  CERTIFICATE
 
     The undersigned hereby certifies by checking the appropriate boxes that:
 
          (1) the Rights evidenced by this Right Certificate [ ] are [ ] are not
     being sold, assigned, transferred, split up, combined or exchanged by or on
     behalf of a Person who is or was an Acquiring Person or an Affiliate or
     Associate of any such Person (as such terms are defined in the Rights
     Agreement);
 
          (2) after due inquiry and to the best knowledge of the undersigned, it
     [  ] did [  ] did not acquire the Rights evidenced by this Right
     Certificate from any Person who is, was or became an Acquiring Person or an
     Affiliate or Associate of an Acquiring Person.
 
Dated:                       , 19
 
                                          --------------------------------------
                                          Signature
 
                                       A-3
<PAGE>   30
 
                          FORM OF ELECTION TO PURCHASE
 
                      (To be executed if holder desires to
                        exercise the Right Certificate)
 
To Theragenics Corporation
 
     The undersigned hereby irrevocably elects to exercise ____________ Rights
represented by this Right Certificate to purchase the Common Shares or other
securities issuable upon the exercise of such Rights and requests that
certificates for such securities be issued in the name of:
 
Please insert social security or other identifying number:
 
- --------------------------------------------------------------------------------
                        (Please print name and address)
 
- --------------------------------------------------------------------------------
 
If such number of Rights shall not be all the Rights evidenced by this Right
Certificate, a new Right Certificate for the balance remaining of such Rights
shall be registered in the name of and delivered to:
 
Please insert social security or other identifying number:
 
- --------------------------------------------------------------------------------
                        (Please print name and address)
 
- --------------------------------------------------------------------------------
 
Optional Election to Exercise without Payment of Cash:
 
     With respect to the exercise of ____________ of the Rights specified above,
the undersigned hereby elects to exercise such Rights without payment of cash
and to receive a number of Common Shares or other securities having a value (as
determined pursuant to the Rights Agreement) equal to the difference between (i)
the value of the Common Shares or other securities that would have been issuable
upon the exercise thereof upon payment of the cash amount as provided in the
Rights Agreement, and (ii) the amount of such cash payment.
 
Dated:                     , 19
 
                                          --------------------------------------
                                          Signature
 
Signature Guaranteed:
 
                                       A-4
<PAGE>   31
 
                                  CERTIFICATE
 
     The undersigned hereby certifies by checking the appropriate boxes that:
 
          (1) the Rights evidenced by this Right Certificate [       ] are
     [       ] are not being exercised by or on behalf of a Person who is or was
     an Acquiring Person or an Affiliate or Associate of any such Person (as
     such terms are defined pursuant to the Rights Agreement);
 
          (2) after due inquiry and to the best knowledge of the undersigned, it
     [       ] did [       ] did not acquire the Rights evidenced by this Right
     Certificate from any Person who is, was or became an Acquiring Person or an
     Affiliate or Associate of an Acquiring Person.
 
Dated:             , 19
 
                                          --------------------------------------
                                          Signature
 
                                     NOTICE
 
     Signatures on the foregoing Form of Assignment and Form of Election to
Purchase and in the related Certificates must correspond to the name as written
upon the face of this Right Certificate in every particular, without alteration
or enlargement or any change whatsoever.
 
     Signatures must be guaranteed by a member firm of a registered national
securities exchange, a member of the National Association of Securities Dealers,
Inc., or a commercial bank or trust company having an office or correspondent in
the United States.
 
                                       A-5
<PAGE>   32
 
                                                                       EXHIBIT B
 
                         SUMMARY OF RIGHTS TO PURCHASE
                                 COMMON SHARES
 
     The Board of Directors of Theragenics Corporation (the "Company") has
declared a dividend distribution of one right (a "Right") for each outstanding
share of common stock, par value $.01 per share (the "Common Shares"), of the
Company. The distribution is payable on February 28, 1997 (the "Record Date") to
the shareholders of record as of the close of business on the Record Date. Each
Right entitles the registered holder to purchase from the Company one Common
Share at a price of $120.00 (the "Purchase Price"), subject to adjustment. The
description and terms of the Rights are set forth in a Rights Agreement, dated
as of February 17, 1997 (the "Rights Agreement"), between the Company and
SunTrust Bank, Atlanta as Rights Agent (the "Rights Agent").
 
     Until the earliest to occur of (i) the close of business on the tenth
calendar day (or such later date as may be specified by the Board of Directors)
following a public announcement that a person or group of affiliated or
associated persons has acquired, or obtained the right to acquire, beneficial
ownership of 15% or more of the outstanding Common Shares (an "Acquiring
Person"), (ii) the close of business on the tenth calendar day following the
commencement of a tender offer or exchange offer by a person or group of
affiliated or associated persons, the consummation of which would result in
beneficial ownership by such person or group of 15% or more of the outstanding
Common Shares, or (iii) the close of business on the tenth calendar day
following the first date of public announcement of the first occurrence of a
Flip-in Event or a Flip-over Event (as such terms are hereinafter defined) (the
earliest of such dates being hereinafter called the "Distribution Date"), the
Rights will be evidenced, with respect to any of the Common Share certificates
outstanding as of the Record Date, by such Common Share certificates.
 
     The Rights Agreement provides that, until the Distribution Date, the Rights
will be transferred with and only with the Common Shares. Until the Distribution
Date (or earlier redemption or expiration of the Rights), new Common Share
certificates issued after the Record Date upon transfer or new issuance of
Common Shares will contain a notation incorporating the Rights Agreement by
reference. Until the Distribution Date (or earlier redemption or expiration of
the Rights), the surrender for transfer of any certificates for Common Shares in
respect of which Rights have been issued will also constitute the transfer of
the Rights associated with the Common Shares represented by such certificates.
As soon as practicable following the Distribution Date, separate certificates
evidencing the Rights (the "Right Certificates") will be mailed to holders of
record of the Common Shares of the close of business on the Distribution Date
and such separate Right Certificates alone will evidence the Rights.
 
     No Right is exercisable at any time prior to the Distribution Date. The
Rights will expire on February 28, 2007 (the "Final Expiration Date") unless
earlier redeemed or exchanged by the Company as described below. Until a Right
is exercised, the holder thereof, as such, will have no rights as a shareholder
of the Company, including without limitation the right to vote or to receive
dividends.
 
     The Purchase Price payable, and the number of Common Shares or other
securities issuable, upon exercise of the Rights are subject to adjustment from
time to time to prevent dilution (i) in the event of a stock dividend on, or a
subdivision, combination or reclassification of, the Common Shares, (ii) upon
the grant to holders of the Common Shares of certain rights or warrants to
subscribe for or purchase Common Shares at a price, or securities convertible
into Common Shares with a conversion price, less than the then current market
price of the Common Shares or (iii) upon the distribution to holders of the
Common Shares of evidences of indebtedness or cash (excluding regular periodic
cash dividends), assets, stock (excluding dividends payable in Common Shares) or
of subscription rights or warrants (other than those referred to above).
 
     In the event (a "Flip-in Event") that (i) any person or group of affiliated
or associated persons becomes the beneficial owner of 20% or more of the
outstanding Common Shares, (ii) any Acquiring Person merges into or combines
with the Company and the Company is the surviving corporation or any Acquiring
Person
 
                                       B-1
<PAGE>   33
 
effects certain other transactions with the Company, as described in the Rights
Agreement, or (iii) during such time as there is an Acquiring Person, there
shall be any reclassification of securities or recapitalization or
reorganization of the Company which has the effect of increasing by more than 1%
the proportionate share of the outstanding shares of any class of equity
securities of the Company or any of its subsidiaries beneficially owned by the
Acquiring Person, proper provision shall be made so that each holder of a Right,
other than Rights that are or were owned beneficially by the Acquiring Person
(which, from and after the later of the Distribution Date and the date of the
earliest of any such events, will be void), will thereafter have the right to
receive, upon exercise thereof at the then current exercise price of the Right,
that number of Common Shares (or, under certain circumstances, an economically
equivalent security or securities of the Company) having a market value of two
times the exercise price of the Right.
 
     To illustrate the operation of such an adjustment, at a Purchase Price of
$120.00, assuming the current market price (as determined pursuant to the
provisions of the Rights Agreement) per Common Share were $30.00, each Right not
owned beneficially by an Acquiring Person at or after the time of such an
occurrence would entitle its holder to purchase (after the Distribution Date)
from the Company 8 Common Shares (having a market value of $240.00) for
$120.00).
 
     In the event (a "Flip-over Event") that, following the first date of public
announcement that a person has become an Acquiring Person, (i) the Company
merges with or into any person and the Company is not the surviving corporation,
(ii) any person merges with or into the Company and the Company is the surviving
corporation, but its Common Shares are changed or exchanged, or (iii) 50% or
more of the Company's assets or earning power, including without limitation
securities creating obligations of the Company, are sold, proper provision shall
be made so that each holder of a Right will thereafter have the right to
receive, upon the exercise thereof at the then current exercise price of the
Right, that number of shares of common stock (or, under certain circumstances,
an economically equivalent security or securities) of such other person which at
the time of such transaction would have a market value of two times the exercise
price of the Right.
 
     At any time after the later of the Distribution Date and the first
occurrence of a Flip-in Event or Flip-over Event and prior to the acquisition by
any person or group of affiliated or associated persons of 50% or more of the
outstanding Common Shares, the Board of Directors of the Company may exchange
the Rights (other than any Rights which have become void), in whole or in part,
at an exchange ratio of one Common Share per Right (subject to adjustment).
 
     With certain exceptions, no adjustment in the Purchase Price will be
required until cumulative adjustments require an adjustment in the Purchase
Price of at least 1%. The Company is not required to issue fractional Common
Shares or other securities issuable upon the exercise of Rights. In lieu of
issuing such securities, the Company may make a cash payment, as provided in the
Rights Agreement.
 
     The Company may redeem the Rights in whole, but not in part, at a price of
$0.01 per Right (the "Redemption Price"), at any time prior to the close of
business on the later of (i) the Distribution Date and (ii) the first date of
public announcement that a person has become an Acquiring Person. Immediately
upon any redemption of the Rights, the right to exercise the Rights will
terminate and the only right of the holders of Rights will be to receive the
Redemption Price.
 
     The Rights Agreement may be amended by the Company without the approval of
any holders of Right Certificates, including amendments which add other events
requiring adjustment to the purchase price payable and the number of Common
Shares or other securities issuable upon the exercise of the Rights or which
modify procedures relating to the redemption of the Rights, provided that no
amendment may be made which decreases the stated Redemption Price or the period
of time remaining until the Final Expiration Date or which modifies a time
period relating to when the Rights may be redeemed at such time as the Rights
are not then redeemable.
 
     A copy of the Rights Agreement has been filed with the Securities and
Exchange Commission as an Exhibit to a Registration Statement on Form 8-A. A
copy of the Rights Agreement is available free of charge from the Company. This
summary description of the Rights is as of February 28, 1997, does not purport
to be complete and is qualified in its entirety by reference to the Rights
Agreement, which is incorporated herein by this reference.
 
                                       B-2

<PAGE>   1
 
                                                                    EXHIBIT 99.2
 
                 Form of press release dated February 18, 1997

<PAGE>   1
 
                                                                    EXHIBIT 99.3
 
                         Form of Letter to Stockholders
                            dated February 28, 1997
<PAGE>   2
 
                      [THERAGENICS CORPORATION LETTERHEAD]
 
                               February 28, 1997
 
To Our Stockholders:
 
     Theragenics Corporation has adopted a Share Purchase Rights Plan designed
to provide you, our stockholders, with additional assurance that you will have
the opportunity to benefit from the long-term prospects and increases in value
of the Company. Pursuant to the Rights Plan, which is similar to the rights
plans previously adopted by many other publicly owned companies, the Board of
Directors declared a dividend of one share purchase right (a "Right") for each
outstanding share of the Company's Common Stock. The distribution is being made
to stockholders of record as of the close of business today.
 
     The Rights initially will be represented by, and traded together with, the
Company's Common Stock. The Rights are not currently exercisable and, as
indicated in the enclosed summary of the Rights Plan, do not become exercisable
unless certain events occur. Upon the occurrence of certain triggering events
including the acquisition of 20% or more of the Company's Common Stock, each
Right that is not held by the 20% or more stockholder will entitle its holder to
purchase additional shares of Common Stock at a discounted price, unless the
Rights are previously redeemed.
 
     A summary of the Rights Plan which explains the terms and nature of the
Rights is enclosed. Please review the summary carefully.
 
     The Board of Directors believes that the Rights Plan will help to protect
your interests in the event that the Company is confronted with coercive, unfair
or inadequate takeover bids or practices. The Plan contains provisions to
protect you in the event of an unsolicited offer to acquire the Company,
including offers that do not treat all stockholders equally, the acquisition in
the open market of shares constituting control without offering fair value to
all stockholders, and other coercive, unfair or inadequate takeover bids and
practices that could impair the ability of the Board of Directors to represent
your interests fully. The Board believes that the Rights represent a sound and
reasonable means of addressing the complex issues of corporate policy created by
the current takeover environment. In adopting the Rights Plan, the Board has
expressed its confidence in the Company's future and its determination that you,
our stockholders, be given every opportunity to participate fully in that
future.
 
                                          On Behalf of the Board of Directors,
 
                                          M. Christine Jacobs
                                          President and Chief Executive Officer

<PAGE>   1
 
                                                                    EXHIBIT 99.4
 
                       Power of Attorney and Resolutions
                         Authorizing Power of Attorney
<PAGE>   2
 
                            THERAGENICS CORPORATION
 
                           RESOLUTIONS ADOPTED BY THE
                    BOARD OF DIRECTORS ON FEBRUARY 14, 1997
 
AUTHORIZATION OF RIGHTS AGREEMENT AND RIGHTS TO PURCHASE COMMON SHARES
 
     RESOLVED, that the issuance by the Corporation of rights to purchase shares
of common stock, par value $.01 of the Corporation ("Common Shares"), as
presented and discussed at this meeting, be, and it hereby is, determined to be
a reasonable response to the threat of inadequate or coercive takeover bids or
practices to which the Board of Directors of the Corporation perceives the
Corporation to be vulnerable.
 
     RESOLVED, that the form of Rights Agreement which has been presented to
this meeting (the "Rights Agreement") with such additions, deletions or
modifications from such form as have been approved at this meeting be, and it
hereby is, approved and ordered placed in the minute book for the Corporation.
 
     RESOLVED, that the Chairman of the Board, the President and any Vice
President of the Corporation be, and each of them hereby is, authorized, in the
name and on behalf of the Corporation, to execute the Rights Agreement with such
additions, deletions or modifications to or from the form thereof presented to
this meeting as have been approved at this meeting, and with such other
additions, deletions or modifications to or from such form as the officer or
officers executing the same shall approve at the recommendation of, or after
consulting with, the Corporation's legal and financial advisors, and to deliver
the same to the Rights Agent thereunder, such execution and delivery
conclusively to evidence the due authorization and approval thereof by the
Corporation.
 
     RESOLVED, that the Corporation be, and it hereby is, authorized and
directed to issue to the holder of each Common Share outstanding on the Record
Date (as hereinafter defined) and thereafter as set forth in the Rights
Agreement one right (a "Right") initially representing the right to purchase one
Common Share, which Right shall be issued pursuant to, and governed by, the
terms of the Rights Agreement.
 
     RESOLVED, that the officers of the Corporation be, and each of them hereby
is, authorized and directed to take any and all such action as they or any of
them may deem necessary, appropriate or desirable to make the Rights Agreement
and the Rights binding and legal obligations of the Corporation in accordance
with their terms, and to comply with each and all of the obligations imposed
upon the Corporation by the provisions of the Rights Agreement and the Rights
which may at any time be outstanding thereunder.
 
DIVIDEND AND ISSUANCE OF RIGHTS
 
     RESOLVED, that the Board of Directors hereby declares that a dividend of
one Right for each Common Share be paid at the close of business on February 28,
1997 (the "Record Date") to the holders of record of the Common Shares issued
and outstanding at the close of business on such date.
 
     RESOLVED, that each Common Share (other than a Common Share issued upon
exercise of any Right) issued or delivered by the Corporation (whether
originally issued or delivered from the Corporation's treasury) after the Record
Date but prior to the earlier of the Distribution Date and the Expiration Date
(as each of those terms is defined in the Rights Agreement) shall be entitled to
and accompanied by one Right and the certificate evidencing such Common Share
shall bear a legend to such effect.
 
     RESOLVED, that the issuance upon exercise of the Rights of a number of
additional Common Shares equal to the total of (i) the number of Common Shares
issued and outstanding at the close of business on the Record Date, (ii) the
number of Common Shares issued (other than a Common Share issued upon the
exercise of any Right) after the close of business on the Record Date but prior
to the earlier of the Distribution Date and the Expiration Date, and (iii) upon
the occurrence of an event which, in accordance with the Rights Agreement, shall
increase the number of Common Shares which may be purchased upon exercise of the
Rights, the number of additional Common Shares which may become so issuable, be,
and it hereby is, authorized; provided, however, that in no event shall such
number of such Common Shares, together with all other Common Shares issued and
outstanding or held in treasury, exceed the total number of authorized Common
Shares.
<PAGE>   3
 
     RESOLVED, that when the Corporation (i) receives for each Common Share as
provided in the Rights Agreement the consideration for which such Common Share
is to be issued pursuant to the Rights Agreement and (ii) issues a Common Share
as provided in the Rights Agreement, such Common Share shall be fully paid and
nonassessable and the issuance of such Common Share shall not be subject to any
preemptive or similar rights.
 
RIGHT CERTIFICATES
 
     RESOLVED, that the certificates evidencing the Rights (the "Right
Certificates") shall be substantially in the form attached as Exhibit A to the
Rights Agreement, with such additions, deletions or modifications to or from
such form as the officer or officers of the Corporation executing the Rights
Agreement or any Right Certificate shall deem necessary, appropriate or
desirable, as conclusively evidenced by his or their execution thereof, and
shall be issued and delivered as provided in the Rights Agreement.
 
     RESOLVED, that the Chairman of the Board, the President, and any Vice
President of the Corporation be, and each of them hereby is, authorized, in the
name and on behalf of the Corporation and under its corporate seal attested by
the Secretary or any Assistant Secretary, to execute and deliver Right
Certificates as provided in the Rights Agreement in fully registered form.
 
     RESOLVED, that the signatures of the officers of the Corporation so
authorized to execute the Right Certificates may be the facsimile signatures of
the present or any future such authorized officers and may be imprinted or
otherwise reproduced thereon, the Corporation for such purpose hereby adopting
each such facsimile signature as binding upon it, notwithstanding the fact that
at the time the Right Certificates shall be countersigned, delivered or disposed
of the officer so executing shall have ceased to be the Chairman of the Board,
the President, a Vice President, the Secretary or an Assistant Secretary, as the
case may be.
 
     RESOLVED, that a facsimile of the corporate seal of the Corporation shall
be imprinted on the Right Certificates, which facsimile is hereby acknowledged
to be the corporate seal of the Corporation for the purpose of sealing the Right
Certificates.
 
     RESOLVED, that after the Distribution Date, the officers of the Corporation
be, and each of them hereby is, authorized to deliver to the Rights Agent
(appointed as described below) under the Rights Agreement the Right Certificates
in such denominations as may be determined by the officers delivering the Right
Certificates (such determination to be conclusively evidenced by the delivery of
the Right Certificates), and to request the Rights Agent to countersign the
Right Certificates and to deliver the same pursuant to the Rights Agreement.
 
RIGHTS AGENT
 
     RESOLVED, that the officers of the Corporation be, and each of them hereby
is, authorized to appoint as Rights Agent under the Rights Agreement SunTrust
Bank, Atlanta or any other bank selected by any of them in their or his
discretion (the "Rights Agent") and, after the Distribution Date, upon
presentation to it of Right Certificates for the purpose of exercise in
accordance with the Rights Agreement, such Rights Agent so appointed is hereby
authorized to act as Transfer Agent and Registrar for the Rights and the Common
Shares issued upon the exercise thereof.
 
     RESOLVED, that for the purpose of the original issue of the Right
Certificates, the Rights Agent be, and it hereby is, authorized and directed:
 
          (a) to countersign when signed manually or by facsimile by the proper
     officers of the Corporation and bearing the manual or facsimile seal of the
     Corporation, original certificates for up to the aggregate number of the
     Rights to be issued; and
 
          (b) to record and register the Right Certificates when so
     countersigned in the books for registration and transfer thereof, showing
     the names and addresses of the respective holders of the Right
     Certificates, the number of Rights evidenced on the face of each of the
     Right Certificates and the date of each of the Right Certificates, as
     provided in the Rights Agreement; and
 
                                        2
<PAGE>   4
 
          (c) upon request of the Corporation, to send Right Certificates when
     so countersigned, recorded and registered to the respective holders of
     Common Shares, at the addresses of the holders shown on the records of the
     Corporation.
 
     RESOLVED, that if the Rights Agent requires a prescribed form of resolution
or resolutions with respect to the matters set forth in the preceding
resolutions or with respect to any of the other duties of the Rights Agent
provided for in the Rights Agreement, such resolution or resolutions shall be
deemed to have been, and hereby are, adopted, and the Secretary or an Assistant
Secretary of the Corporation hereby is authorized to certify the adoption of all
such resolutions as though such resolutions were now adopted, all such
resolutions to be inserted in the minute book for the Corporation and to be
appropriately marked by one of such officers.
 
SECURITIES ACT REGISTRATION
 
     RESOLVED, that if any of the officers of the Corporation deem it necessary,
appropriate or desirable, such officers, and any of them, hereby are authorized
for and on behalf of the Corporation (a) to prepare, execute and file with the
Securities and Exchange Commission (the "Commission") a registration statement
or registration statements under the Securities Act of 1933, as amended (the
"Securities Act"), for the registration of the Common Shares or other securities
issuable upon the exercise of Rights, or any or all thereof; (b) to execute and
file with the Commission such amendments and supplements to any such
registration statement as the officer or officers so acting deem necessary,
appropriate or desirable to conform to the requirements of the Securities Act;
and (c) to take all such further actions and to execute all such additional
documents as the officer or officers so acting may deem necessary, appropriate
or desirable to cause any such registration statement to become and remain
effective.
 
     RESOLVED, that the Secretary of the Corporation be, and he hereby is,
authorized to act on behalf of the Corporation as its agent for service, with
all powers and functions specified in the General Rules and Regulations of the
Commission under the Securities Act.
 
     RESOLVED, that the officers of the Corporation be, and each of them hereby
is, authorized, in the name and on behalf of the Corporation, to take all such
actions and to execute all such documents as they or any of them may deem
necessary, appropriate or desirable in connection with the issuance of the
Rights, Common Shares or other securities issuable upon the exercise of Rights,
or any or all thereof, in order to comply with the Securities Act.
 
BLUE SKY ACTION
 
     RESOLVED, that the officers of the Corporation be, and each of them hereby
is, authorized, in the name and on behalf of the Corporation, to take all such
actions and to execute all such documents as they or any of them may deem
necessary, appropriate or desirable, including the execution, acknowledgment,
verification, delivery, filing and publishing of consents to, and appointments
of statutory agents for, service of process, applications, reports, resolutions,
prospectuses and other documents in order to comply with the applicable
securities laws of all states of the United States or other jurisdictions in
order to permit the issuance of the Rights, Common Shares or other securities
issuable upon the exercise of Rights, or any or all thereof, in such
jurisdictions, and to maintain such registrations or qualifications.
 
     RESOLVED, that the officers of the Corporation be, and each of them hereby
is, authorized and directed, in the name and on behalf of the Corporation, to
take all such actions and to execute all such documents as they or any of them
may deem necessary, appropriate or desirable in order to register the
Corporation as a dealer or broker in any state or states wherein such
registration is necessary, appropriate or desirable in connection with the
issuance of the Rights, Common Shares or other securities issuable upon the
exercise of Rights, or any or all thereof, and in connection therewith to
execute, acknowledge, verify, deliver, file and publish all such applications,
reports, resolutions and other papers and instruments as may be required under
such securities laws, and to take all further actions and to execute all further
documents as they or any of them may deem necessary, appropriate or desirable in
order to maintain any such registration.
 
                                        3
<PAGE>   5
 
     RESOLVED, that the Chairman of the Board, the President, the Chief
Financial Officer or any Vice President and the Secretary and any Assistant
Secretary of the Corporation be, and each of them hereby is, authorized to
execute and file, in the name and on behalf of the Corporation, in such states
of the United States or such other jurisdictions wherein consents to service of
process may be required under the securities laws thereof in connection with
such registration or qualification of the Rights, Common Shares or other
securities issuable upon the exercise of Rights, or any or all thereof, or in
connection with the registration of the Corporation as a dealer or broker, an
irrevocable written consent on the part of the Corporation to be sued in such
states in suits arising out of the violation of any provisions of such
securities laws or arising out of the offer or sale of any such securities and
to appoint an appropriate state official as agent of the Corporation for the
purpose of receiving and accepting process of such suits.
 
     RESOLVED, that if a prescribed form of resolution or resolutions is
required in any such jurisdiction in which any such application or statement is
filed, such resolution or resolutions shall be deemed to have been, and hereby
are, adopted, and the Secretary and any Assistant Secretary of the Corporation
be, and each of them hereby is, authorized to certify the adoption of all such
resolutions as though such resolutions were now adopted, all such resolutions to
be inserted into the minute book for the Corporation and to be appropriately
marked by one of such officers.
 
LISTING ON STOCK EXCHANGES AND EXCHANGE ACT REGISTRATION
 
     RESOLVED, that the officers of the Corporation be, and each of them hereby
is, authorized, in the name and on behalf of the Corporation, to execute and
file such application or applications (including exhibits) and amendments and
supplements thereto and to take such other action as the officer or officers so
acting may deem necessary, appropriate or desirable to list the Rights, Common
Shares or other relevant securities issuable upon the exercise of Rights, or any
or all thereof, on the National Association of Securities Dealers Automated
Quotation National Market (the "NASDAQ National Market") and on any other stock
exchanges (and/or to effect the inclusion thereof on any securities quotation
system) deemed necessary, appropriate or desirable by such officer or officers,
and to appear before the NASDAQ National Market and any such other stock
exchanges, to execute such papers and agreements and deliver or cause to be
delivered such other documents (including certified copies of all resolutions
adopted hereby) as may be necessary to conform with the requirements of the
NASDAQ National Market and any such other stock exchanges and to effect any such
listing or quotation.
 
     RESOLVED, that the form of Indemnity Agreement, if any, required by the
NASDAQ National Market, indemnifying the NASDAQ National Market and others
against loss resulting from reliance on the facsimile signatures of the officers
of the Corporation on the Right Certificates or the certificates representing
the Common Shares or other securities issuable upon the exercise of Rights be,
and it hereby is, approved, and that the officers of the Corporation be, and
each of them hereby is, authorized, in the name and on behalf of the
Corporation, to execute and deliver such Indemnity Agreement.
 
     RESOLVED, that, if the NASDAQ National Market or any stock exchange upon
which the Rights, Common Shares or other securities issuable upon the exercise
of Rights, as the case may be, are to be listed requires a prescribed form of
resolution or resolutions to effect such listing, such resolution or resolutions
shall be deemed to have been, and hereby are, adopted, and the Secretary and any
Assistant Secretary of the Corporation be, and each of them hereby is,
authorized to certify the adoption of all such resolutions as though such
resolutions were now adopted, all such resolutions to be inserted into the
minute book for the Corporation and to be appropriately marked by one of such
officers.
 
     RESOLVED, that the officers of the Corporation be, and each of them hereby
is, authorized to file with the Commission all appropriate applications or
registration statements (and any amendments or supplements thereto) to effect
the registration of the Rights, Common Shares or other securities issuable upon
the exercise of Rights, or any or all thereof, under the Securities Exchange Act
of 1934, as amended (the "Exchange Act"), and to appear before the Commission
and to take all such further actions and to execute all such additional
documents as they or any of them may deem necessary, appropriate or desirable in
connection therewith.
 
                                        4
<PAGE>   6
 
POWER OF ATTORNEY
 
     RESOLVED, that the Chairman of the Board, the President, the Chief
Financial Officer, any Vice President and the Secretary of the Corporation be,
and each of them hereby is, authorized, in the name and on behalf of the
Corporation, to execute a power or powers of attorney appointing M. Christine
Jacobs and Bruce W. Smith, and any of them, with full power of substitution and
resubstitution, as attorneys or attorney of the Corporation, to sign and file a
registration statement or registration statements relating to the registration
of the Rights, Common Shares or other securities issuable upon the exercise of
Rights, or any or all thereof, under the Securities Act and to sign and file a
registration statement relating to the registration of the Rights, Common Shares
or other securities issuable upon the exercise of Rights, or any or all thereof,
under the Exchange Act, and any and all amendments and exhibits to each such
registration statement, and any and all applications or other documents to be
filed with the Commission pertaining thereto, with full power and authority to
do and perform any and all acts and things whatsoever required and necessary to
be done in the premises, and which powers of attorney shall ratify, confirm and
approve the acts of said attorneys and any of them and any such substitutes
related thereto.
 
GENERAL
 
     RESOLVED, that any actions taken by the officers of the Corporation prior
to the adoption of the foregoing resolutions that are within the authority
conferred thereby be, and each of them hereby is, ratified, confirmed and
approved as the act and deed of the Corporation.
 
     RESOLVED, that the officers of the Corporation be, and each of them hereby
is, authorized and empowered to execute and deliver any and all other documents,
papers or instruments and to do or cause to be done any and all such acts and
things as they or any of them may deem necessary, appropriate or desirable in
order to enable the Corporation fully and promptly to carry out the purposes and
intent of the foregoing resolutions.
 
                                        5


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