MICRION CORP /MA/
8-A12G, 1997-07-30
SPECIAL INDUSTRY MACHINERY, NEC
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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 (g) OF THE SECURITIES EXCHANGE ACT OF 1934


                               MICRION CORPORATION
             (Exact name of registrant as specified in its charter)


             Massachusetts                                   04-2892070
- ----------------------------------------                     -------------------
(State of incorporation or organization)                     (IRS Employer
                                                             Identification No.)

One Corporation Way, Peabody, MA                             01960
- ----------------------------------------                     ----------
(Address of principal executive offices)                     (Zip Code)

If this Form relates to                      If this Form relates to the
the registration of a                        registration of a class of debt
class of debt securities                     securities and is to become
and is effective upon                        effective simultaneously with
filing pursuant to General                   the effectiveness of a concurrent
Instruction A(c)(1)please                    registration statement under the
check the following box. [  ]                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:

                                      NONE

                      (Name of each exchange on which each
                           class is to be registered):


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

                     JUNIOR PREFERRED STOCK PURCHASE RIGHTS
                    -----------------------------------------
                    (Title of each class to be so registered)









<PAGE>   2



Item 1.           DESCRIPTION OF REGISTRANT'S SECURITIES TO BE REGISTERED

         As of July 30, 1997, the Board of Directors (the "Board") of Micrion
Corporation (the "Company") declared a dividend of one purchase right ("Right")
for every outstanding share of the Company's common stock, no par value (the
"Common Stock"). The Rights will be distributed to holders of record of the
Common Stock as of the close of business on August 4, 1997 (the "Dividend Record
Date"). The terms of the Rights are set forth in a Rights Agreement dated as of
July 30, 1997 (the "Rights Agreement") between the Company and BankBoston, N.A.
(the "Rights Agent"). The Rights Agreement provides for the issuance of one
Right for every share of Common Stock issued and outstanding on the Dividend
Record Date and for each share of Common Stock which is issued or sold after
that date and prior to the Distribution Date (as defined below).

         Each Right entitles the holder to purchase from the Company one
one-thousandth of a share of Series A Junior Preferred Stock, $.01 par value, of
the Company (the "Junior Preferred Stock"), at a price of $90 per one
one-thousandth of a share, subject to adjustments in certain events. The Rights
will expire on July 30, 2007 (the "Expiration Date"), or upon the earlier
redemption of the Rights, and are not exercisable until the Distribution Date.

         No separate Rights certificates will be issued at the present time.
Until the Distribution Date (or earlier redemption or expiration of the Rights),
(i) the Rights will be evidenced by the outstanding Common Stock certificates
and will be transferred with and only with the Common Stock certificates, (ii)
new Common Stock certificates issued after the Dividend Record Date upon
transfer or new issuance of the Common Stock will contain a notation
incorporating the Rights Agreement by reference and (iii) the surrender for
transfer of any Common Stock certificate will also constitute the transfer of
the Rights associated with the Common Stock represented by such certificate.

         The Rights will separate from the Common Stock on the Distribution
Date. Unless otherwise determined by a majority of the Continuing Directors (as
defined below) then in office, the Distribution Date (the "Distribution Date")
will occur on the earlier of (i) the tenth business day following the date of a
public announcement that a person, together with its affiliates and associates,
except as described below, has acquired or obtained the rights to acquire
beneficial ownership of 15% or more of the outstanding shares of Common Stock
(collectively, an "Acquiring Person") (such date is referred to herein as the
"Shares Acquisition Date") or (ii) the tenth business day following commencement
of a tender offer or exchange offer that would result in any person, together
with its affiliates and associates, owning 15% or more of the outstanding Common
Stock.

                                        2

<PAGE>   3



After the Distribution Date, separate certificates evidencing the Rights
("Rights Certificates") will be mailed to holders of record of the Common Stock
as of the close of business on the Distribution Date and thereafter such
separate Rights Certificates alone will evidence the Rights. The Board, by
action of the Continuing Directors, may delay the distribution of the
Certificates. The term "Continuing Directors" means (i) any member of the
Company's Board of Directors who is not an Acquiring Person, or an affiliate,
associate or representative of an Acquiring Person, or (ii) any person who
subsequently becomes a member of the Board, who is not an Acquiring Person or an
affiliate, associate or representative of an Acquiring Person, if such person's
nomination for election or election to the Board is recommended or approved by a
majority of Continuing Directors.

         If, at any time after July 30, 1997, any person or group of affiliated
or associated persons (other than the Company and its affiliates) shall become
an Acquiring Person, each holder of a Right will have the right to receive
shares of Common Stock (or, in certain circumstances, cash, property or other
securities of the Company) having a market value of two times the exercise price
of the Right. Following the occurrence of any such event, any Rights that are,
or (under certain circumstances specified in the Rights Agreement) were,
beneficially owned by any Acquiring Person shall immediately become null and
void. Also, if the Company were acquired in a merger or other business
combination, or if more than 50% of its assets or earning power were sold, each
holder of a Right would have the right to exercise such Right and thereby
receive common stock of the acquiring company with a market value of two times
the exercise price of the Right.

         The Board may, at its option, at any time after any person becomes an
Acquiring Person, exchange all or part of the then outstanding and exercisable
Rights for shares of Common Stock at an exchange ratio of one share of Common
Stock per Right, appropriately adjusted to reflect any stock split, stock
dividend or similar transaction occurring after July 30, 1997 (as the same may
be adjusted, the "Exchange Ratio"). The Board however, may not effect an
exchange at any time after any person (other than (i) the Company, (ii) any
subsidiary of the Company, (ii) any employee benefit plan of the Company or of
any subsidiary of the Company or (iv) any entity holding Common Stock for or
pursuant to the terms of any such plan), together with all affiliates of such
person, becomes the beneficial owner of 50% or more of the Common Stock then
outstanding. Immediately upon the action of the Board ordering the exchange of
any Rights and without any further action and without any notice, the right to
exercise such Rights will terminate and the only right thereafter of a holder of
such Rights will be to receive that number of shares of Common Stock equal to
the number of such Rights held by the holder multiplied by the Exchange Ratio.


                                        3

<PAGE>   4



         The exercise price of the Rights, and the number of one one-thousandths
of a share of Junior Preferred Stock or other securities or property issuable
upon exercise of the Rights, are subject to adjustment from time to time to
prevent dilution (i) in the event of a stock dividend on, or a subdivision,
combination or reclassification of, the Junior Preferred Stock, (ii) upon the
grant to holders of the Junior Preferred Stock of certain rights or warrants to
subscribe for shares of the Junior Preferred Stock or certain convertible
securities at less than the current market price of the Junior Preferred Stock,
or (iii) upon the distribution to holders of the Junior Preferred Stock of
evidences of indebtedness or assets (excluding cash dividends paid out of the
earnings or retained earnings of the Company and certain other distributions) or
of subscription rights, or warrants (other than those referred to above).

         At any time prior to the tenth day (or such later date as may be
determined by a majority of the Continuing Directors) after the Shares
Acquisition Date, the Company, by a majority vote of the Continuing Directors,
may redeem the Rights at a redemption price of $.01 per Right, subject to
adjustment in certain events (as the same may be adjusted, the "Redemption
Price"). Immediately upon the action of the Continuing Directors electing to
redeem 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.

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

         The Rights Agreement may be amended by the Board at any time prior to
the Distribution Date without the approval of the holders of the Rights. From
and after the Distribution Date, the Rights Agreement may be amended by the
Board without the approval of the holders of the Rights in order to cure any
ambiguity, to correct any defective or inconsistent provisions, to change any
time period for redemption or any other time period under the Rights Agreement
or to make any other changes that do not adversely affect the interests of the
holders of the Rights (other than any Acquiring Person or its affiliates and
associates or their transferees).

         A copy of the Rights Agreement dated as of July 30, 1997 between the
Company and BankBoston, N.A., as Rights Agent, specifying the terms of the
Rights (including as exhibits the form of Rights Certificate and the Summary of
Rights) is attached hereto as an exhibit. The foregoing description of the
Rights does not purport to be complete and is qualified in its entirety by
reference to the Rights Agreement, which is incorporated herein by reference.


                                        4

<PAGE>   5



Item 2.           EXHIBITS

1.       Rights Agreement, dated as of July 30, 1997 (the "Rights Agreement")
         between Micrion Corporation and BankBoston, N.A., as Rights Agent.

2.       Form of Certificate of Vote of Directors Establishing a Series of a
         Class of Stock of the Company, with respect to the Series A Junior
         Preferred Stock, par value $.01 per share (attached as Exhibit A to the
         Rights Agreement).

3.       Form of Rights Certificate (attached as Exhibit B to the Rights
         Agreement). Pursuant to the Rights Agreement, printed Rights
         Certificates will not be mailed until the Distribution Date (as defined
         in the Rights Agreement).

4.       Summary of Rights (attached as Exhibit C to the Rights
         Agreement).



                                        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.

                                             MICRION CORPORATION



Dated:  July 30, 1997                        By: /s/ Nicholas P. Economou
                                                 -------------------------------
                                             Name:  Nicholas P. Economou
                                             Title: President and Chief
                                                    Executive Officer



                                        6

<PAGE>   7


                                  EXHIBIT INDEX

         The following designated exhibits are filed herewith:




1.       Rights Agreement, dated as of July 30, 1997 (the "Rights Agreement")
         between Micrion Corporation and BankBoston, N.A., as Rights Agent.

2.       Form of Certificate of Vote of Directors Establishing a Series of a
         Class of Stock of the Company, with respect to the Series A Junior
         Preferred Stock, par value $.01 per share (attached as Exhibit A to the
         Rights Agreement).

3.       Form of Rights Certificate (attached as Exhibit B to the Rights
         Agreement). Pursuant to the Rights Agreement, printed Rights
         Certificates will not be mailed until the Distribution Date (as defined
         in the Rights Agreement).

4.       Summary of Rights (attached as
         Exhibit C to the Rights Agreement).



                                        7





<PAGE>   1












                               MICRION CORPORATION

                                       and

                                BANKBOSTON, N.A.

                                  Rights Agent








                                RIGHTS AGREEMENT


                            Dated as of July 30, 1997



<PAGE>   2



                                TABLE OF CONTENTS

                                                                           PAGE

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

Section 2.        Appointment of Rights Agent...............................  6

Section 3.        Issuance of Rights Certificates...........................  6

Section 4.        Form of Rights Certificates...............................  8

Section 5.        Countersignature and Registration.........................  9

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

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

Section 8.        Cancellation and Destruction of Rights
                  Certificates.............................................. 13

Section 9.        Reservation and Availability of Preferred
                  Shares.................................................... 13

Section 10.       Preferred Shares Record Date.............................. 15

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

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

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

Section 14.       Fractional Rights and Fractional Shares................... 28

Section 15.       Rights of Action.......................................... 29

Section 16.       Agreement of Rights Holders............................... 30

Section 17.       Rights Certificate Holder Not Deemed a
                  Stockholder............................................... 30

Section 18.       Concerning the Rights Agent............................... 30

Section 19.       Merger or Consolidation or Change of Name of
                  Rights Agent.............................................. 31



                                        i

<PAGE>   3



Section 20.       Duties of Rights Agent.................................... 32

Section 21.       Change of Rights Agent.................................... 34

Section 22.       Issuance of New Rights Certificate........................ 35

Section 23.       Redemption................................................ 36

Section 24.       Exchange.................................................. 37

Section 25.       Notice of Certain Events.................................. 39

Section 26.       Notices................................................... 39

Section 27.       Supplements and Amendments................................ 40

Section 28.       Successors................................................ 41

Section 29.       Determinations and Actions by the Board of
                  Directors, etc............................................ 41

Section 30.       Benefits of this Agreement................................ 41

Section 31.       Severability.............................................. 41

Section 32.       Governing Law............................................. 42

Section 33.       Counterparts.............................................. 42

Section 34.       Descriptive Headings...................................... 42


EXHIBITS
- --------

Exhibit A                  Form of Certificate of Designations
Exhibit B                  Form of Rights Certificate
Exhibit C                  Summary of Rights




                                       ii

<PAGE>   4



                                RIGHTS AGREEMENT
                                ----------------


         Rights Agreement, dated as of July 30, 1997 (this "Agreement"), between
MICRION CORPORATION, a Massachusetts corporation (the "Company"), and
BANKBOSTON, N.A. (the "Rights Agent").

         As of July 30, 1997 (the "Rights Dividend Declaration Date"), the Board
of Directors of the Company authorized and declared a dividend of one Preferred
Share purchase right (a "Right") for each Common Share (as hereinafter defined)
of the Company outstanding as of the Close of Business (as hereinafter defined)
on August 4, 1997 (the "Record Date"), each right representing the right to
purchase one one-thousandth of a share of Series A Junior Preferred Stock (as
such number may be adjusted pursuant to the provisions of this Agreement),
having the rights, preferences and privileges set forth in the form of
Certificate of Vote of Directors Establishing a Series of a Class of Stock, with
respect to the Series A Junior Preferred Stock of the Company, attached hereto
as EXHIBIT A, upon the terms and subject to the conditions herein set forth, and
further authorized and directed the issuance of one Right (as such number may be
adjusted pursuant to the provisions of this Agreement) with respect to each
Common Share that shall become outstanding between the Record Date and the
earlier of the Distribution Date and the Expiration Date (as such terms are
hereinafter defined), and in certain circumstances after the Distribution Date.

         NOW, THEREFORE, in consideration of the promises and the mutual
agreements herein set forth, the parties hereby agree as follows:

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

                  (a) "ACQUIRING PERSON" shall mean any Person who or which,
together with all Affiliates and Associates of such Person, shall be the
Beneficial Owner of 15% or more of the Common Shares then outstanding, but shall
not include (i) the Company, (ii) any Subsidiary of the Company, (iii) any
employee benefit plan of the Company or of any Subsidiary of the Company, (iv)
any entity holding Common Shares for or pursuant to the terms of any such plan
or (v) UBS Securities LLC ("UBS"). Notwithstanding the foregoing, no Affiliate
or Associate of UBS shall be treated as the Beneficial Owner of the Common
Shares held by UBS, and no Person shall be deemed to be an Acquiring Person
either (i) as the result of an acquisition of Common Shares by the Company
which, by reducing the number of shares outstanding, increases the proportionate
number of shares beneficially owned by such Person to 15% or more of the Common
Shares of the Company then outstanding; PROVIDED, HOWEVER,





<PAGE>   5



that if a Person shall become the Beneficial Owner of 15% of more of the Common
Shares of the Company then outstanding by reason of share purchases by the
Company and shall, after such share purchases by the Company, become the
Beneficial Owner of any additional Common Shares of the Company, then such
Person shall be deemed to be an Acquiring Person, or (ii) if within eight
Business Days after such Person would otherwise become an Acquiring Person (but
for the operation of this clause (ii)), such Person notifies the Board of
Directors that such Person did so inadvertently and within two Business Days
after such notification, such Person is the Beneficial Owner of less than 15% of
the outstanding Common Shares.

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

                  (c)      A Person shall be deemed the "BENEFICIAL OWNER" of
and shall be deemed to "BENEFICIALLY OWN" any securities:

                           (i)      which such Person or any of such Person's
Affiliates or Associates beneficially owns, directly or indirectly, for purposes
of Section 13(d) of the Exchange Act and Rule 13d-3 thereunder (or any
comparable or successor law or regulation);

                           (ii)     which such Person or any of such Person's
Affiliates or Associates has (A) the right to acquire (whether such right is
exercisable immediately or only after the passage of time) pursuant to any
agreement, arrangement or understanding (other than customary agreements with
and between underwriters and selling group members with respect to a bona fide
public offering of securities), or upon the exercise of conversion rights,
exchange rights, rights (other than the Rights), warrants or options, or
otherwise; PROVIDED, HOWEVER, that a Person shall not be deemed pursuant to this
Section 1(c)(ii)(A) the Beneficial Owner of, or to beneficially own, (1)
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 (2) securities
which a Person or any of such Person's Affiliates or Associates may be deemed to
have the right to acquire pursuant to any merger or other acquisition agreement
between the Company and such Person (or one or more of its Affiliates or
Associates) if such agreement has been approved by the Board of Directors of the
Company prior to there being an Acquiring Person; or (B) the right to vote
pursuant to any agreement, arrangement or understanding; PROVIDED, HOWEVER, that
a Person shall not be deemed the Beneficial Owner of, or to beneficially own,
any security under this Section 1(c)(ii)(B) if the agreement, arrangement or
understanding to vote such security



                                        2

<PAGE>   6



(1) arises solely from a revocable proxy or consent given to such Person in
response to a public proxy or consent solicitation made pursuant to, and in
accordance with, the applicable rules and regulations 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

                           (iii)    which are beneficially owned, directly or
indirectly, by any other Person (or any Affiliate or Associate thereof) with
which such Person or any of such Person's Affiliates or Associates has any
agreement, arrangement or understanding (whether or not in writing) (other than
customary agreements with and between underwriters and selling group members
with respect to a bona fide public offering of securities) for the purpose of
acquiring, holding, voting (except to the extent contemplated by the proviso to
Section 1(c)(ii)(B)) or disposing of any securities of the Company; PROVIDED,
HOWEVER, that in no case shall an officer or director of the Company be deemed
(x) the Beneficial Owner of any securities beneficially owned by another officer
or director of the Company solely by reason of actions undertaken by such
persons in their capacity as officers or directors of the Company or (y) the
Beneficial Owner of securities held of record by the trustee of any employee
benefit plan of the Company or any Subsidiary of the Company for the benefit of
any employee of the Company or any Subsidiary of the Company, other than the
officer or director, by reason of any influence that such officer or director
may have over the voting of the securities held in the plan.

                  (d)      "BUSINESS DAY" shall mean any day other than a
Saturday, Sunday or a day on which banking institutions in Massachusetts are
authorized or obligated by law or executive order to close.

                  (e)      "CLOSE OF BUSINESS" on any given date shall mean 5:00
P.M., Massachusetts time, on such date; PROVIDED, HOWEVER, that if such date is
not a Business Day it shall mean 5:00 P.M., Massachusetts time, on the next
succeeding Business Day.

                  (f)      "COMMON SHARES" when used with reference to the
Company shall mean the shares of Common Stock of the Company, no par value.
"Common Shares" when used with reference to any Person other than the Company
shall mean the capital stock (or equity interest) with the greatest voting power
of such other Person or, if such other Person is a Subsidiary of another Person,
the Person or Persons which ultimately control such first-mentioned Person.

                  (g)      "CONTINUING DIRECTOR" shall mean (i) any member of
the Board of directors of the Company, while a member of the Board, who is not
an Acquiring Person, or an Affiliate or Associate of an Acquiring Person, or a
representative of an Acquiring Person or of any such Affiliate or Associate, and
who was a member of the Board



                                        3

<PAGE>   7



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

                  (h) "DISTRIBUTION DATE" shall mean the earlier of (i) the
Close of Business on the tenth Business Day (or such later date as may be
determined by action of a majority of Continuing Directors then in office) after
the Shares Acquisition Date (or, if the tenth Business Day after the Shares
Acquisition Date occurs before the Record Date, the Close of Business on the
Record Date) or (ii) the Close of Business on the tenth Business Day (or such
later date as may be determined by action of a majority of Continuing Directors
then in office) after the date that a tender or exchange offer by any Person
(other than the Company, any Subsidiary of the Company, any employee benefit
plan of the Company or of any Subsidiary of the Company, or any Person or entity
organized, appointed or established by the Company for or pursuant to the terms
of any such plan) is first published or sent or given within the meaning of Rule
14d-2(a) of the General Rules and Regulations under the Exchange Act, if,
assuming the successful consummation thereof, such person would be the
Beneficial Owner of 15% or more of the shares of Common Stock then outstanding.

                  (i) "EQUIVALENT SHARES" shall mean Preferred Shares and any
other class or series of capital stock of the Company which is entitled to
participate in dividends and other distributions, including distributions upon
the liquidation, dissolution or winding up of the Company, on a proportional
basis with the Common Shares. In calculating the number of any class or series
of Equivalent Shares for purposes of Section 11 of this Agreement, the number of
shares, or fractions of a share, of such class or series of capital stock that
is entitled to the same dividend or distribution as a whole Common Share shall
be deemed to be one share.

                  (j) "EXPIRATION DATE" shall mean the earliest of (i) the Close
of Business on the Final Expiration Date, (ii) the Redemption Date, (iii) the
time at which the Board of Directors orders the exchange of the Rights as
provided in Section 24 hereof or (iv) the consummation of a transaction
contemplated by Section 13(d) hereof.

                  (k) "FINAL EXPIRATION DATE" shall mean July 30, 2007.

                  (l) "PERMITTED OFFER" shall mean a tender offer for all
outstanding Common Shares made in the manner prescribed by Section 14(d) of the
Exchange Act and the rules and regulations promulgated thereunder; PROVIDED,
HOWEVER, that such tender offer occurs at a



                                        4

<PAGE>   8



time when Continuing Directors are in office and a majority of the Continuing
Directors then in office has determined that the offer is both adequate and
otherwise in the best interests of the Company and its stockholders (taking into
account all factors that such Continuing Directors deem relevant, including
without limitation prices that could reasonably be achieved if the Company or
its assets were sold on an orderly basis designed to realize maximum value).

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

                  (n) "PREFERRED SHARES" shall mean shares of Series A Junior
Preferred Stock of the Company.

                  (o) "PURCHASE PRICE" shall have the meaning set forth in
Section 4(a) hereof.

                  (p) "RECORD DATE" shall have the meaning set forth in the
recitals at the beginning of this Agreement.

                  (q) "REDEMPTION DATE" shall mean the time at which the Board
of Directors of the Company orders redemption of the Rights as provided in
Section 23 hereof.

                  (r) "REDEMPTION PRICE" shall have the meaning set forth in
Section 23(a) hereof.

                  (s) "RIGHTS DIVIDEND DECLARATION DATE" shall have the meaning
set forth in the recitals at the beginning of this Agreement.

                  (t) "SECTION 13 EVENT" shall mean any event described in
clause (i), (ii) or (iii) of Section 13(a) hereof.

                  (u) "SHARES ACQUISITION DATE" shall mean the first date of
public announcement (which, for purposes of this definition, shall include,
without limitation, a report filed pursuant to Section 13(d) under the Exchange
Act) by the Company or an Acquiring Person that an Acquiring Person has become
such; PROVIDED THAT, if such person is determined not to have become an
Acquiring Person pursuant to Section 1(a)(ii) hereof, then no Shares Acquisition
Date shall be deemed to have occurred.

                  (v) "SUBSIDIARY" of any Person shall mean any corporation or
other entity of which an amount of voting securities sufficient to elect a
majority of the directors or Persons having similar authority of such
corporation or other entity is beneficially owned, directly or indirectly, by
such Person, or any corporation or other entity otherwise controlled by such
Person.



                                        5

<PAGE>   9




                  (w) "TOTAL EXERCISE PRICE" shall have the meaning set forth in
Section 4(a) hereof.

                  (x) "TRADING DAY" shall have the meaning set forth in Section
11(d) hereof.

                  (y) A "TRIGGERING EVENT" shall be deemed to have occurred upon
any Person (other than the Company, any Subsidiary of the Company, any employee
benefit plan of the Company or any Subsidiary of the Company, or any entity
holding Common Shares for or pursuant to the terms of any such plan), together
with all Affiliates and Associates of such Person, becoming an Acquiring Person.

         Section 2. APPOINTMENT OF RIGHTS AGENT. The Company hereby appoints the
Rights Agent to act as agent for the Company and the holders of the Rights (who,
in accordance with Section 3 hereof, shall, prior to the Distribution Date, also
be the holders of the Common Shares) in accordance with the terms and conditions
hereof, and the Rights Agent hereby accepts such appointment. The Company may
from time to time appoint such co-Rights Agents as it may deem necessary or
desirable upon ten (10) days' prior written notice to the Rights Agent. The
Rights Agent shall have no duty to supervise, and shall in no event be liable
for, the acts or omissions of any such co-Rights Agent.

         Section 3. ISSUANCE OF RIGHTS CERTIFICATES.

                  (a) Until the Distribution Date, (i) the Rights will be
evidenced (subject to the provisions of Section 3(b) and 3(c) hereof) by the
certificates for Common Shares registered in the names of the holders thereof
(which certificates shall also be deemed to be Rights Certificates) and not by
separate Rights Certificates and (ii) the right to receive Rights Certificates
will be transferable only in connection with the transfer of Common Shares.
Until the earlier of the Distribution Date or the Expiration Date, the surrender
for transfer of such certificates for Common Shares shall also constitute the
surrender for transfer of the Rights associated with the Common Shares
represented thereby. As soon as practicable after the Distribution Date, the
Company will prepare and execute, the Rights Agent will countersign, and the
Company will send or cause to be sent (and the Rights Agent will, if requested,
send) by first-class, 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 Rights Certificate in
substantially the form of EXHIBIT B hereto (a "Rights Certificate"), evidencing
one Right for each Common Share so held, subject to adjustment as provided
herein. In the event that an adjustment in the number of Rights per Common Share
has been made pursuant to Section 11(a)(i), Section 11(i) or Section 11(p)
hereof, then at the time of distribution of the Rights Certificates, the Company
shall make the necessary and appropriate



                                        6

<PAGE>   10



rounding adjustments (in accordance with Section 14(a) hereof) so that Rights
Certificates representing only whole numbers of Rights are distributed and cash
is paid in lieu of any fractional Rights. As of the Distribution Date, the
Rights will be evidenced solely by such Rights Certificates and may be
transferred by the transfer of the Rights Certificates as permitted hereby,
separated and apart from any transfer of one or more Common Shares, and the
holders of such Rights Certificates as listed in the records of the Company or
any transfer agent or registrar for the Rights shall be the record holders
thereof.

                  (b) On the Record Date or as soon as practicable thereafter,
the Company will send a copy of a Summary of Rights in substantially the form of
EXHIBIT C hereto (the "Summary of Rights"), by first-class, postage-prepaid
mail, to each record holder of Common Shares as of the close of business on the
Record Date, at the address of such holder shown on the records of the Company.

                  (c) Unless the Board of Directors, by resolution adopted at or
before the time of the issuance (including pursuant to the exercise of rights
under the Company's benefit plans) of any Common Shares, specifies to the
contrary, Rights shall be issued in respect of all Common Shares that are issued
after the Record Date but prior to the earlier of the Distribution Date or the
Expiration Date or, in certain circumstances provided in Section 22 hereof,
after the Distribution Date. Certificates representing such Common Shares shall
also be deemed to be certificates for Rights, and shall bear the following
legend:

         This certificate also evidences and entitles the holder hereof to
         certain rights as set forth in a Rights Agreement between MICRION
         CORPORATION and BANKBOSTON, N.A., as the Rights Agent, dated as of July
         30, 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 MICRION CORPORATION. Under certain
         circumstances, as set forth in the Rights Agreement, such Rights will
         be evidenced by separate certificates and will no longer be evidenced
         by this certificate. MICRION CORPORATION will mail to the holder of
         this certificate a copy of the Rights Agreement without charge after
         receipt of a written request therefor. Under certain circumstances set
         forth in the Rights Agreement, Rights issued to, or held by, any Person
         who is, was or becomes an Acquiring Person or any Affiliate or
         Associate thereof (as such terms are defined in the Rights Agreement),
         whether currently held by or on behalf of such Person or by any
         subsequent holder, may become null and void.




                                        7

<PAGE>   11



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

         Section 4. FORM OF RIGHTS CERTIFICATES.

                  (a) The Rights Certificates (and the forms of election to
purchase Common Shares and of assignment to be printed on the reverse thereof)
shall be substantially in the form of EXHIBIT B hereto and may have such marks
of identification or designation and such legends, summaries or endorsements
printed thereon as the Company may deem appropriate and as are not inconsistent
with the provisions of this Agreement, or as may be required to comply with any
applicable law or with any rule or regulation made pursuant thereto or with any
rule or regulation of any stock exchange on which the Rights may from time to
time be listed, or to conform to usage. Subject to the provisions of Section 11
and Section 22 hereof, the Rights Certificates, whenever distributed, shall be
dated as of the Record Date (or in the case of Rights issued with respect to
Common Shares issued by the Company after the Record Date, as of the date of
issuance of such Common Shares) and on their face shall entitle the holders
thereof to purchase such number of one-thousandths of a Preferred Share as shall
be set forth therein at the price set forth therein (such exercise price per one
one-thousandth of a Preferred Share being hereinafter referred to as the
"Purchase Price" and the aggregate exercise price of all Preferred Shares
issuable upon exercise of one Right being hereinafter referred to as the "Total
Exercise Price"), but the number and type of securities purchasable upon the
exercise of each Right and the Purchase Price shall be subject to adjustment as
provided herein.

                  (b) Any Rights Certificate issued pursuant to Section 3(a) or
Section 22 hereof that represents Rights beneficially owned by: (i) an Acquiring
Person or any Associate or Affiliate of an Acquiring Person, (ii) a transferee
of an Acquiring Person (or of any such Associate or Affiliate) who becomes a
transferee after the Acquiring Person becomes such or (iii) a transferee of an
Acquiring Person (or of any such Associate or Affiliate) who becomes a
transferee prior to or concurrently with the Acquiring Person becoming such and
receives such Rights pursuant to either (A) a



                                        8

<PAGE>   12



transfer (whether or not for consideration) from the Acquiring Person to holders
of equity interests in such Acquiring Person or to any Person with whom such
Acquiring Person has any continuing agreement, arrangement or understanding
regarding the transferred Rights or (B) a transfer which the Board of Directors
of the Company has determined is part of a plan, arrangement or understanding
which has as a primary purpose or effect avoidance of Section 7(e) hereof, and
any Rights Certificate issued pursuant to Section 6 or Section 11 hereof upon
transfer, exchange, replacement or adjustment of any other Rights Certificate
referred to in this sentence, shall contain (to the extent feasible) the
following legend:

         The Rights represented by this Rights Certificate are or were
         beneficially owned by a Person who was or became an Acquiring Person or
         an Affiliate or Associate of an Acquiring Person (as such terms are
         defined in the Rights Agreement). Accordingly, this Rights Certificate
         and the Rights represented hereby may become null and void in the
         circumstances specified in Section 7(e) of the Rights Agreement.

         Section 5. COUNTERSIGNATURE AND REGISTRATION.

                  (a) The Rights Certificates shall be executed on behalf of the
Company by its President or any Vice President, either manually or by facsimile
signature, and by the Treasurer or an Assistant Treasurer of the Company, either
manually or by facsimile signature, and shall have affixed thereto the Company's
seal (if any) or a facsimile thereof. The Rights Certificates shall be manually
countersigned by the Rights Agent and shall not be valid for any purpose unless
countersigned. In case any officer of the Company who shall have signed any of
the Rights Certificates shall cease to be such officer of the Company before
countersignature by the Rights Agent and issuance and delivery by the Company,
such Rights Certificates nevertheless may be countersigned by the Rights Agent
and issued and delivered by the Company with the same force and effect as
through the person who signed such Rights Certificates had not ceased to be such
officer of the Company; and any Rights Certificate may be signed on behalf of
the Company by any person who, at the actual date of the execution of such
Rights Certificate, shall be a proper officer of the Company to sign such Rights
Certificate, although at the date of the execution of this Rights Agreement any
such person was not such an officer.

                  (b) Following the Distribution Date, the Rights Agent will
keep or cause to be kept, at its office designated for such purposes, books for
registration and transfer of the Rights Certificates issued hereunder. Such
books shall show the names and addresses of the respective holders of the Rights
Certificates, the



                                        9

<PAGE>   13



number of Rights evidenced on its face by each of the Rights Certificates and
the date of each of the Rights Certificates.

         Section 6. TRANSFER, SPLIT UP, COMBINATION AND EXCHANGE OF RIGHTS
CERTIFICATES; MUTILATED, DESTROYED, LOST OR STOLEN RIGHTS CERTIFICATES.

                  (a) Subject to the provisions of Sections 7(e), 14 and 24
hereof, at any time after the Close of Business on the Distribution Date, and at
or prior to the Close of Business on the Expiration Date, any Rights Certificate
or Rights Certificates may be transferred, split up, combined or exchanged for
another Rights Certificate or Rights Certificates, entitling the registered
holder to purchase a like number of one-thousandths of a Preferred Share (or,
following a Triggering Event, other securities, cash or other assets, as the
case may be) as the Rights Certificate or Rights Certificates surrendered then
entitled such holder to purchase. Any registered holder desiring to transfer,
split up, combine or exchange any Rights Certificate or Rights Certificates
shall make such request in writing delivered to the Rights Agent, and shall
surrender the Rights Certificate or Rights Certificates to be transferred, split
up, combined or exchanged at the office of the Rights Agent designated for such
purpose. Neither the Rights Agent nor the Company shall be obligated to take any
action whatsoever with respect to the transfer of any such surrendered Rights
Certificate until the registered holder shall have completed and signed the
certificate contained in the form of assignment on the reverse side of such
Rights Certificate and shall have provided such additional evidence of the
identity of the Beneficial Owner (or former Beneficial Owner) or Affiliates or
Associates thereof as the Company shall reasonably request. Thereupon the Rights
Agent shall, subject to Sections 7(e), 14 and 24 hereof, countersign and deliver
to the Person entitled thereto a Rights Certificate or Rights Certificates, as
the case may be, as so requested. The Company may require payment of a sum
sufficient to cover any tax or governmental charge that may be imposed in
connection with any transfer, split up, combination or exchange of Rights
Certificates.

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





                                       10

<PAGE>   14



         Section 7. EXERCISE OF RIGHTS; PURCHASE PRICE; EXPIRATION DATE OF
RIGHTS.

                  (a) Subject to Section 7(e) hereof, the registered holder of
any Rights Certificate may exercise the Rights evidenced thereby (except as
otherwise provided herein) in whole or in part at any time after the
Distribution Date upon surrender of the Rights Certificate, with the form of
election to purchase on the reverse side thereof duly executed, to the Rights
Agent at the office of the Rights Agent designated for such purpose, together
with payment of the Purchase Price for each one-thousandth of a Preferred Share
as to which the Rights are exercised, at or prior to the Expiration Date.

                  (b) The Purchase Price for each one-thousandth of a Preferred
Share issuable pursuant to the exercise of a Right shall initially be $90, shall
be subject to adjustment from time to time as provided in Sections 11 and 13
hereof and shall be payable in lawful money of the Untied States of America in
accordance with paragraph (c) below.

                  (c) Upon receipt of a Rights Certificate representing
exercisable Rights, with the form of election to purchase duly executed,
accompanied by payment of the Purchase Price for the number of one-thousandths
of a Preferred Share (or other securities or property, as the case may be) to be
purchased and an amount equal to any applicable transfer tax required to be paid
by the holder of such Rights Certificate in accordance with Section 9 hereof in
cash, or by certified check or cashier's check payable to the order of the
Company, the Rights Agent shall, subject to Section 20(k) hereof, thereupon
promptly (i) (A) requisition from any transfer agent of the Preferred Shares (or
make available, if the Rights Agent is the transfer agent for the Preferred
Shares) a certificate or certificates for the number of one-thousandths of a
Preferred Share to be purchased and the Company hereby irrevocably authorizes
its transfer agent to comply with all such requests or (B) if the Company shall
have elected to deposit the total number of one-thousandths of a Preferred Share
issuable upon exercise of the Rights hereunder with a depositary agent,
requisition from the depositary agent of depositary receipts representing such
number of one-thousandths of a Preferred Share as are to be purchased (in which
case certificates for the Preferred Shares represented by such receipts shall be
deposited by the transfer agent with the depositary agent) and the Company
hereby directs the depositary agent to comply with such request, (ii) when
appropriate, requisition from the Company the amount of cash to be paid in lieu
of issuance of fractional shares in accordance with Section 14 hereof, (iii)
after receipt of such certificates or depositary receipts, cause the same to be
delivered to or upon the order of the registered holder of such Rights
Certificate, registered in such name or names as may be designated by such
holder and (iv)



                                       11

<PAGE>   15



when appropriate, after receipt thereof, deliver such cash to or upon the order
of the registered holder of such Rights Certificate. The payment of the Purchase
Price (as such amount may be reduced (including to zero) pursuant to Section
11(a)(iv) hereof) may be made in cash or by certified bank check or bank draft
payable to the order of the Company. In the event that the Company is obligated
to issue other securities of the Company, pay cash and/or distribute other
property pursuant to Section 11(a) hereof, the Company will make all
arrangements necessary so that such other securities, cash and/or other property
are available for distribution by the Rights Agent, if and when appropriate.

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

                  (e) Notwithstanding anything in this Agreement to the
contrary, from and after the first occurrence of a Triggering Event or a Section
13 Event, any Rights beneficially owned by (i) an Acquiring Person or an
Associate or Affiliate of an Acquiring Person, (ii) a transferee of an Acquiring
Person (or of any such Associate or Affiliate) who becomes a transferee after
the Acquiring Person becomes such (a "Post Transferee"), (iii) a transferee of
an Acquiring Person (or of any such Associate or Affiliate) who becomes a
transferee prior to or concurrently with the Acquiring Person becoming such and
receives such Rights pursuant to either (A) a transfer (whether or not for
consideration) from the Acquiring Person to holders of equity interests in such
Acquiring Person or to any Person with whom the Acquiring Person has any
continuing agreement, arrangement or understanding regarding the transferred
Rights or (B) a transfer which the Board of Directors of the Company has
determined is part of a plan, arrangement or understanding which has as a
primary purpose or effect the avoidance of this Section 7(e) (a "Prior
Transferee") or (iv) any subsequent transferee receiving transferred Rights from
a Post Transferee or a Prior Transferee, either directly or through one or more
intermediate transferees, shall become null and void without any further action
and no holder of such Rights shall have any rights whatsoever with respect to
such Rights, whether under any provision of this Agreement or otherwise. The
Company shall use all reasonable efforts to ensure that the provisions of this
Section 7(e) and Section 4(b) hereof are complied with, but shall have no
liability to any holder of Rights Certificates or to any other Person as a
result of its failure to make any determinations with respect to an Acquiring
Person or any of such Acquiring Person's Affiliates, Associates or transferees
hereunder.



                                       12

<PAGE>   16



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

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

         Section 9. RESERVATION AND AVAILABILITY OF PREFERRED SHARES.

                  (a) The Company covenants and agrees that it will use its best
efforts to cause to be reserved and kept available out of and to the extent of
its authorized and unissued shares of preferred stock not reserved for another
purpose (and, following the occurrence of a Triggering Event, out of its
authorized and unissued shares of Common Shares and/or other securities), the
number of Preferred Shares (and, following the occurrence of the Triggering
Event, Common Shares and/or other securities) that will be sufficient to permit
the exercise in full of all outstanding Rights.

                  (b) If the Company shall hereafter list any of its Preferred
Shares on a national securities exchange, then so long as the Preferred Shares
(and, following the occurrence of a Triggering Event, Common Shares and/or other
securities) issuable and deliverable upon exercise of the Rights may be listed
on a national securities exchange, the Company shall use its best efforts to
cause, from and after such time as the Rights become exercisable (but only to
the extent that it is reasonably likely that the



                                       13

<PAGE>   17



Rights will be exercised), all shares reserved for such issuance to be listed on
such exchange upon official notice of issuance upon such exercise.

                  (c) The Company shall use its best efforts to (i) file, as
soon as practicable following the earliest date after the first occurrence of a
Triggering Event in which the consideration to be delivered by the Company upon
exercise of the Rights has been determined in accordance with Section 11(a)(iv)
hereof, or as soon as is required by law following the Distribution Date, as the
case may be, a registration statement under the Securities Act of 1933, as
amended (the "Securities Act"), with respect to the securities purchasable upon
exercise of the Rights on an appropriate form, (ii) cause such registration
statement to become effective as soon as practicable after such filing, and
(iii) cause such registration statement to remain effective (with a prospectus
at all times meeting the requirements of the Securities Act) until the earlier
of (A) the date as of which the Rights are no longer exercisable for such
securities and (B) the date of expiration of the Rights. The Company may
temporarily suspend, for a period not to exceed ninety (90) days after the date
set forth in clause (i) of the first sentence of this Section 9(c), the
exercisability of the Rights in order to prepare and file such registration
statement and permit it to become effective. Upon any such suspension, the
Company shall issue a public announcement stating, and notify the Rights Agent,
that the exercisability of the Rights has been temporarily suspended, as well as
a public announcement and notification to the Rights Agent at such time as the
suspension is no longer in effect. The Company will also take such action as may
be appropriate under, or to ensure compliance with, the securities or "blue sky"
laws of the various states in connection with the exercisability of the Rights.
Notwithstanding any provision of this Agreement to the contrary, the Rights
shall not be exercisable in any jurisdiction, unless the requisite qualification
in such jurisdiction shall have been obtained, or an exemption therefrom shall
be available, and until a registration statement has been declared effective.

                  (d) The Company covenants and agrees that it will take all
such action as may be necessary to ensure that all Preferred Shares delivered
upon exercise of Rights shall, at the time of delivery of the certificates for
such Preferred Shares (subject to payment of the Purchase Price), be duly and
validly authorized and issued and fully paid and nonassessable shares.

                  (e) The Company further covenants and agrees that it will pay
when due and payable any and all federal and state transfer taxes and charges
which may be payable in respect of the original issuance or delivery of the
Rights Certificates or of any Preferred Shares upon the exercise of Rights. The
Company shall not, however, be required to pay any transfer tax which may be



                                       14

<PAGE>   18



payable in respect of any transfer or delivery of Rights Certificates to a
person other than, or the issuance or delivery of certificates or depositary
receipts for the Preferred Shares in a name other than that of, the registered
holder of the Rights Certificate evidencing Rights surrendered for exercise or
to issue or to deliver any certificates or depositary receipts for Preferred
Shares upon the exercise of any Rights until any such tax shall have been paid
(any such tax being payable by the holder of such Rights Certificate at the time
of surrender) or until it has been established to the Company's satisfaction
that no such tax is due.

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

         Section 11. ADJUSTMENT OF PURCHASE PRICE; NUMBER OF SHARES OR NUMBER OF
RIGHTS. The Purchase Price, the number and kind of shares or other property
covered by each Right and the number of Rights outstanding are subject to
adjustment from time to time as provided in this Section 11.

                  (a) (i) In the event 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 (by reverse stock split or otherwise) into a smaller
number of Common 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), then, in each such event, except as otherwise
provided in this Section 11(a) and Section 7(e) hereof: (1) each of the Rights



                                       15

<PAGE>   19



outstanding at the time of the record date for such dividend or the effective
date of such subdivision, combination or reclassification shall be
proportionately adjusted to that number of Rights (calculated to the nearest one
ten-thousandth (1/10,000) of a Right) equal to a fraction (the "Exchange
Ratio"), the numerator of which shall be the total number of Common Shares or
shares of capital stock issued in such reclassification of the Common Shares
outstanding immediately following such time and the denominator of which shall
be the total number of Common Shares outstanding immediately prior to such time,
and the number of Rights that shall thereafter be issued with respect to each
Common Share or share of such other capital stock that shall become outstanding
thereafter prior to the Distribution Date shall be equal to the total number of
outstanding Rights immediately after such event (as adjusted pursuant to this
clause (1)) divided by the total number of outstanding Common Shares or shares
of such other capital stock immediately after such event (subject to further
adjustment pursuant to the provisions of this Agreement); (2) 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 shall be adjusted so
that the Purchase Price thereafter shall equal the result obtained by dividing
the Purchase Price in effect immediately prior to such time by the Exchange
Ratio; PROVIDED, HOWEVER, that in no event shall the consideration to be paid
upon the exercise of one Right be less than the aggregate par value of the
shares of capital stock of the Company issuable upon exercise of such Right; and
(3) the number of Common Shares or shares of such other capital stock issuable
upon the exercise of each Right shall remain unchanged immediately after such
event, but, in the event of a reclassification, the kind of shares issuable upon
the exercise of each Right immediately after such reclassification shall be
adjusted to be the kind of shares of such other capital stock issued in such
reclassification, rather than Common Shares. If an event occurs which would
require an adjustment under both this Section 11(a)(i) and Section 11(a)(ii)
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) hereof.

                           (i)  Subject to Section 24 of this Agreement, in the
event a Triggering Event shall have occurred, then promptly following such
Triggering Event, proper provision shall be made so that each holder of a Right,
except as provided in Section 7(e) hereof, shall thereafter have the right to
receive for each Right, upon exercise thereof in accordance with the terms of
this Agreement and payment of the then-current Total Exercise Price, in lieu of
a number of one-thousandths of a Preferred Share, such number of Common Shares
of the Company as shall equal the result obtained by multiplying the
then-current Purchase Price by the then number of one-thousandths of a Preferred
Share for which a Right was exercisable (or would have been exercisable if the
Distribution



                                       16

<PAGE>   20



Date had occurred) immediately prior to the first occurrence of a Triggering
Event, and dividing that product by 50% of the current per share market price
(determined pursuant to Section 11(d) hereof) for Common Shares on the date of
occurrence of the Triggering Event (such number of shares being hereinafter
referred to as the "Adjustment Shares").

                           (ii)  The right to buy Common Shares of the Company
pursuant to Section 11(a)(ii) hereof shall not arise as a result of any Person
becoming an Acquiring Person through an acquisition of Common Shares pursuant to
a Permitted Offer.

                           (iii) In lieu of issuing Common Shares in accordance
with Section 11(a)(ii) hereof, the Company may, if the Board of Directors
determines that such action is necessary or appropriate and not contrary to the
interest of holders of Rights (and, in the event that the number of Common
Shares which are authorized by the Company's Articles of Organization but not
outstanding or reserved for issuance for purposes other than upon exercise of
the Rights are not sufficient to permit the exercise in full of the Rights, or
if any necessary regulatory approval for such issuance has not been obtained by
the Company, the Company shall): (A) determine the excess of (1) the value of
the Common Shares issuable upon the exercise of a Right (the "Current Value")
over (2) the Purchase Price (such excess, the "Spread") and (B) with respect to
each Right make adequate provision to substitute for such Common Shares, upon
exercise of the Rights (1) cash, (2) a reduction in the Purchase Price, (3)
other equity securities of the Company (including, without limitation, shares or
units of shares of any series of preferred stock which the Board of Directors of
the Company has deemed to have the same value as Common Shares (such shares or
units of shares of preferred stock are herein called "common stock
equivalents"), except to the extent that the Company has not obtained any
necessary stockholder or regulatory approval for such issuance, (4) debt
securities of the Company except to the extent that the Company has not obtained
any necessary stockholder or regulatory approval for such issuance, (5) other
assets or (6) any combination of the foregoing, having an aggregate value equal
to the Current Value, where such aggregate value has been determined by the
Board of Directors of the Company based upon the advice of a nationally
recognized investment banking firm selected by the Board of Directors of the
Company; PROVIDED, HOWEVER, if the Company shall not have made adequate
provision to deliver value pursuant to clause (B) above within thirty (30) days
following the later of (x) the first occurrence of a Triggering Event and (y)
the date on which the Company's right of redemption pursuant to Section 23(a)
expires (the later of (x) and (y) being referred to herein as the "Section
11(a)(ii) Trigger Date"), then the Company shall be obligated to deliver, upon
the surrender for exercise of a Right and without requiring payment of the
Purchase Price, Common Shares (to the extent available), except to the extent
that the Company



                                       17

<PAGE>   21



has not obtained any necessary stockholder or regulatory approval for such
issuance, and then, if necessary, cash, which shares and/or cash have an
aggregate value equal to the Spread. If the Board of Directors of the Company
shall determine in good faith that it is likely that sufficient additional
Common Shares could be authorized for issuance upon exercise in full of the
Rights or that any necessary regulatory approval for such issuance will be
obtained, the thirty (30) day period set forth above may be extended to the
extent necessary, but not more than ninety (90) days after the Section 11(a)(ii)
Trigger Date, in order that the Company may seek stockholder approval for the
authorization of such additional shares or take action to obtain such regulatory
approval (such period, as it may be extended, the "Substitution Period"). To the
extent that the Company determines that some action need be taken pursuant to
the first and/or second sentences of this Section 11(a)(iv), the Company (x)
shall provide, subject to Section 7(e) hereof, that such action shall apply
uniformly to all outstanding Rights and (y) may suspend the exercisability of
the Rights until the expiration of the Substitution Period in order to seek any
authorization of additional shares, to take any action to obtain any required
regulatory approval and/or to decide the appropriate form of distribution to be
made pursuant to such first sentence and to determine the value thereof. In the
event of any such suspension, the Company shall issue a public announcement
stating that the exercisability of the Rights has been temporarily suspended, as
well as a public announcement at such time as the suspension is no longer in
effect. For purposes of this Section 11(a)(iv), the value of the Common Shares
shall be the current per share market price (as determined pursuant to Section
11(d) hereof) of the Common Shares on the Section 11(a)(ii) Trigger Date and the
value of any "common stock equivalent" shall be deemed to have the same value as
the Common Shares on such date.

                  (b) In case the Company shall, at any time after the date of
this Agreement, fix a record date for the issuance of rights, options or
warrants to all holders of Common Shares or of any class or series of Equivalent
Shares entitling such holders (for a period expiring within forty-five (45)
calendar days after such record date) to subscribe for or purchase Common Shares
or Equivalent Shares or securities convertible into Common Shares or Equivalent
Shares at a price per share (or having a conversion price per share, if a
security convertible into Common Shares or Equivalent Shares) less than the then
current per share market price of the Common Shares or Equivalent Shares (as
defined in Section 11(d)) on such record date, then, in each such case, 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 and
Equivalent Shares (if any) outstanding on such record date, plus the number of
Common Shares or Equivalent Shares, as the case may be, which the aggregate



                                       18

<PAGE>   22



offering price of the total number of Common Shares or Equivalent Shares, as the
case may be, so to be offered (and/or the aggregate initial conversion price of
the convertible securities so to be offered) would purchase at such current
market price, and the denominator of which shall be the number of Common Shares
and Equivalent Shares (if any) outstanding on such record date, plus the number
of additional Common Shares or Equivalent Shares, as the case may be, 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 and shall be binding on the Rights Agent
and the holders of the Rights. Common Shares and Equivalent Shares owned by or
held for the account of the Company shall not be deemed outstanding for the
purpose of any such computation. Such adjustment shall be made successively
whenever such a record date is fixed, and in the event that such rights, options
or warrants are not so issued, the Purchase Price shall be adjusted to be the
Purchase Price which would then be in effect if such record date had not been
fixed.

                  (c) In case the Company shall, at any time after the date of
this Agreement, fix a record date for the making of a distribution to all
holders of the Common Shares or of any class or series of Equivalent Shares
(including any such distribution made in connection with a consolidation or
merger in which the Company is the continuing or surviving corporation) or
evidences of indebtedness or assets (other than a regular quarterly cash
dividend, if any, or a dividend payable in Common Shares) or subscription
rights, options or warrants (excluding those referred to in Section 11(b)),
then, in each such case, the Purchase Price to be in effect after such record
date shall be determined by multiplying the Purchase Price in effect immediately
prior to such record date by a fraction, the numerator of which shall be the
current market price (as determined pursuant to Section 11(d) hereof) of a
Common Share or an Equivalent Share on such record date, less the fair market
value (as determined in good faith by the Board of Directors of the Company,
whose determination shall be described in a statement filed with the Rights
Agent) of the portion of the cash, assets or evidences of indebtedness so to be
distributed or of such subscription rights or warrants applicable to a Common
Share or Equivalent Share, as the case may be, and the denominator of which
shall be such current market price (as determined pursuant to Section 11(d)
hereof) of a Common Share or Equivalent Share on such record date. 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



                                       19

<PAGE>   23



shall be adjusted to be the Purchase Price which would have been in effect if
such record date had not been fixed.

                  (d) For the purpose of any computation hereunder, other than
computations made pursuant to Section 11(a)(iv) hereof, the "current per share
market price" of any security (a "Security" for the purpose of this Section
11(d)) on any date shall be deemed to be the average of the daily closing prices
per share of such Security for the thirty (30) consecutive Trading Days (as such
term is hereinafter defined) immediately prior to such date, and for purposes of
computations made pursuant to Section 11(a)(iv) hereof, the "current per share
market price" of any Security on any date shall be deemed to be the average of
the daily closing prices per share of such Security for the ten (10) consecutive
Trading Days immediately prior to such date; PROVIDED, HOWEVER, that in the
event that the current per share market price of the Security is determined
during a period following the announcement by the issuer of such Security of (i)
a dividend or distribution on such Security payable in shares of such Security
or securities convertible into such shares or (ii) any subdivision, combination
or reclassification of such Security, and prior to the expiration of the
requisite thirty (30) Trading Days or ten (10) Trading Day period, after the
ex-dividend date for such dividend or distribution, or the record date for such
subdivision, combination or reclassification, then, and in each such case, the
current per share market price shall be appropriately adjusted to reflect the
current market price per share equivalent of such Security. The closing price
for each day shall be the last sale price, regular way, or, in case no such sale
takes place on such day, the average of the closing bid and asked prices,
regular way, in either case as reported in the principal consolidated
transaction reporting system with respect to securities listed or admitted to
trading on the New York Stock Exchange or, if the Security is not listed or
admitted to trading on the New York Stock Exchange, as reported in the principal
consolidated transaction reporting system with respect to securities listed on
the principal national securities exchange on which the Security is listed or
admitted to trading or, if the Security is not listed or admitted to trading on
any national securities exchange, the last sale price or, if such last sale
price is not reported, the average of the high bid and low asked prices in the
over-the-counter market, as reported by the National Association of Securities
Dealers, Inc. Automated Quotations System ("Nasdaq") or such other system then
in use, or, if on any such date the Security is not quoted by any such
organization, the average of the closing bid and asked prices as furnished by a
professional market maker making a market in the Security selected by the Board
of Directors of the Company. If on any such date no market maker is making a
market in the Common Shares, the fair value of such shares on such date as
determined in good faith by the Board of Directors of the Company shall be used.
The term "Trading Day" shall mean a day on which the principal national



                                       20

<PAGE>   24



securities exchange on which the Security is listed or admitted to trading is
open for the transaction of business or, if the Security is not listed or
admitted to trading on any national securities exchange, a Business Day. If the
Common Shares are not publicly held or so listed or traded, "current per share
market price" shall mean the fair value per share as determined in good faith by
the Board of Directors of the Company, whose determination shall be described in
a statement filed with the Rights Agent and shall be conclusive for all
purposes.

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

                  (f) If as a result of an adjustment made pursuant to Section
11(a) or 13(a) hereof, the holder of any Right thereafter exercised shall become
entitled to receive any shares of capital stock other than Preferred Shares,
thereafter the number of such other shares so receivable upon exercise of any
Right and if required, the Purchase Price thereof, shall be subject to
adjustment from time to time in a manner and on terms as nearly equivalent as
practicable to the provisions with respect to the Common Shares contained in
sections 11(a), (b), (c), (e), (h), (i), (j), (k), (l) and (m), and the
provisions of Sections 7, 9, 10, 13 and 14 with respect to the Preferred Shares
shall apply on like terms to any such other shares.

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

                  (h) Unless the Company shall have exercised its election as
provided in Section 11(i), upon each adjustment of the Purchase Price as a
result of the calculations made in Section 11(b), 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 Preferred
Shares



                                       21

<PAGE>   25



(calculated to the nearest one hundred-thousandth of a share) obtained by (i)
multiplying (x) the number of Preferred Shares covered by a Right immediately
prior to this adjustment, by (y) the Purchase Price in effect immediately prior
to such adjustment of the Purchase Price, and (ii) dividing the product so
obtained by the Purchase Price in effect immediately after such adjustment of
the Purchase Price.

                  (i) The Company may elect on or after the date of any
adjustment of the Purchase Price as a result of the calculations made in Section
11(b) to adjust the number of Rights, in substitution for any adjustment in the
number of Preferred Shares purchasable upon the exercise of a Right. Each of the
Rights outstanding after such adjustment of the number of Rights shall be
exercisable for the number of one-thousandths of a Preferred Share 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 ten-thousandth) obtained by dividing the
Purchase Price in effect immediately prior to adjustment of the Purchase Price
by the Purchase Price in effect immediately after adjustment of the Purchase
Price. The Company shall make a public announcement of its election to adjust
the number of Rights, indicating the record date for the adjustment, and, if
known at the time, the amount of the adjustment to be made. This record date may
be the date on which the Purchase Price is adjusted or any day thereafter, but,
if the Rights Certificates have been issued, shall be at least ten (10) days
later than the date of the public announcement. If Rights Certificates have been
issued, upon each adjustment of the number of Rights pursuant to this Section
11(i), the Company shall, as promptly as practicable, cause to be distributed to
holders of record of Rights Certificates on such record date Rights Certificates
evidencing, subject to Section 14 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 Rights Certificates held by such holders
prior to the date of adjustment, and upon surrender thereof, if required by the
Company, new Rights Certificates evidencing all the Rights to which such holders
shall be entitled after such adjustment. Rights Certificates so to be
distributed shall be issued, executed and countersigned in the manner provided
for herein (and may bear, at the option of the Company, the adjusted Purchase
Price) and shall be registered in the names of the holders of record of Rights
Certificates on the record date specified in the public announcement.

                  (j) Irrespective of any adjustment or change in the Purchase
Price or the number of Preferred Shares issuable upon the exercise of the
Rights, the Rights Certificates theretofore and thereafter issued may continue
to express the Purchase Price per



                                       22

<PAGE>   26



one one-thousandth of a Preferred Share and the number of one-thousandths of a
Preferred Share which were expressed in the initial Rights Certificates issued
hereunder.

                  (k) Before taking any action that would cause an adjustment
reducing the Purchase Price below the par or stated value, if any, of the number
of one-thousandths of a Preferred Share 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 as
fully paid and nonassessable shares such number of one-thousandths of a
Preferred Share at such adjusted Purchase Price.

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

                  (m) Anything in this Section 11 to the contrary
notwithstanding, prior to the Distribution Date, the Company shall be entitled
to make such reductions in the Purchase Price, in addition to those adjustments
expressly required by this Section 11, as and to the extent that it in its sole
discretion shall determine to be advisable in order that any (i) consolidation
or subdivision of the Preferred or Common Shares, (ii) issuance wholly for cash
of any Preferred or Common Shares at less than the current market price, (iii)
issuance wholly for cash of Preferred or Common Shares or securities which by
their terms are convertible into or exchangeable for Preferred or 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 Preferred or
Common Shares shall not be taxable to such stockholders.

                  (n) The Company covenants and agrees that it shall not, at any
time after the Distribution Date, effect or permit to occur any Triggering Event
or Section 13 Event, if (i) at the time or immediately after such Triggering
Event or Section 13 Event there are any rights, warrants or other instruments or
securities outstanding or agreements in effect which would substantially



                                       23

<PAGE>   27



diminish or otherwise eliminate the benefits intended to be afforded by the
Rights or (ii) prior to, simultaneously with or immediately after such Section
13 Event, the stockholders of the Person who constitutes, or would constitute,
the "Principal Party" for purposes of Section 13(b) hereof shall have received a
distribution of Rights previously owned by such Person or any of its Affiliates
and Associates.

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

                  (p) Anything in this Agreement to the contrary
notwithstanding, in the event the Company shall at any time after the date of
this Agreement (A) declare a dividend on the Preferred Shares payable in
Preferred Shares, (B) subdivide the outstanding Preferred Shares, (C) combine
the outstanding Preferred Shares (by reverse stock split or otherwise) into a
smaller number of Preferred Shares, or (D) issue any shares of its capital stock
in a reclassification of the Preferred Shares (including any such
reclassification in connection with a consolidation or merger in which the
Company is the continuing or surviving corporation), then, in each such event,
except as otherwise provided in this Section 11 and Section 7(e) hereof: (1)
each of the Rights outstanding at the time of the record date for such dividend
or the effective date of such subdivision, combination or reclassification shall
be proportionately adjusted to that number of Rights (calculated to the nearest
one ten-thousandth (1/10,000) of a Right) equal to a fraction (the "Exchange
Fraction"), the numerator of which shall be the total number of Preferred Shares
or shares of capital stock issued in such reclassification of the Preferred
Shares outstanding immediately following such time and the denominator of which
shall be the total number of Preferred Shares outstanding immediately prior to
such time, and the number of Rights that shall thereafter be issued with respect
to each Common Share or share of other capital stock that shall be issued in a
reclassification of the Common Shares prior to the Distribution Date shall be
equal to the total number of outstanding Rights immediately after such event (as
adjusted pursuant to this clause(1)) divided by the total number of outstanding
Common Shares or shares of such other capital stock immediately after such event
(subject to further adjustment pursuant to the provisions of this Agreement);
(2) 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 shall be adjusted so that the Purchase Price thereafter shall
equal the result obtained by dividing the Purchase Price in effect immediately
prior to such time by the Exchange Fraction; PROVIDED, HOWEVER, that in no event



                                       24

<PAGE>   28



shall the consideration to be paid upon the exercise of one Right be less than
the aggregate par value of the shares of capital stock of the Company issuable
upon exercise of such Right; and (3) the number of one-thousandths of a
Preferred Share or share of such other capital stock issuable upon the exercise
of each Right shall remain unchanged immediately after such event, but, in the
event of a reclassification, the kind of shares issuable upon the exercise of
each Right immediately after such reclassification shall be adjusted to be the
kind of shares of such other capital stock issued in such reclassification,
rather than Preferred Shares.

         Section 12. CERTIFICATE OF ADJUSTED PURCHASE PRICE OR NUMBER OF SHARES.
Whenever an adjustment is made as provided in Sections 11 and 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 Preferred Shares a copy of
such certificate and (c) mail a brief summary thereof to each holder of a Rights
Certificate in accordance with Section 26 hereof. Notwithstanding the foregoing
sentence, the failure of the Company to make such certification or give such
notice shall not affect the validity of such adjustment or the force or effect
of the requirement for such adjustment. The Rights Agent shall be fully
protected in relying on any such certificate and on any adjustment contained
therein and shall not be deemed to have knowledge of such adjustment unless and
until it shall have received such certificate.

         Section 13. CONSOLIDATION, MERGER OR SALE OR TRANSFER OF ASSETS OR
EARNING POWER.

                  (a)      In the event that, following the Shares Acquisition
Date, directly or indirectly:

                           (i)      the Company shall consolidate with, or merge
with and into, any other Person (other than a Subsidiary of the Company in a
transaction the principal purpose of which is to change the state of
incorporation of the Company or which complies with Section 11(o) hereof);

                           (ii)     any Person (other than a Subsidiary of the
Company in a transaction that complies with Section 11(o) hereof) shall
consolidate with the Company, or merge with and into the Company and the Company
shall be the continuing or surviving corporation of such consolidation or
merger; or

                           (iii)    the Company shall sell or otherwise
transfer (or one or more of its Subsidiaries shall sell or otherwise transfer),
in one or more transactions, assets or earning power aggregating 50% or more of
the assets or earning power of the Company and its Subsidiaries (taken as a
whole) to any other Person



                                       25

<PAGE>   29



or Persons (other than the Company or one or more of its wholly owned
Subsidiaries in one or more transactions, each of which complies with Section
11(o) hereof);

                           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, such number of validly
authorized and issued, fully paid and nonassessable Common Shares of the
Principal Party (as hereinafter defined), free of any liens, encumbrances,
rights of first refusal or other adverse claims, as shall be equal to the result
obtained by (1) multiplying the then current Purchase Price by the number of
one-thousandths of a Preferred Share for which a Right was exercisable
immediately prior to the first occurrence of a Section 13 Event (or, if a
Triggering Event has occurred prior to the first occurrence of a Section 13
Event, multiplying the number of such one-thousandths of a Preferred Share for
which a Right was exercisable immediately prior to the first occurrence of a
Triggering Event by the Purchase Price in effect immediately prior to such first
occurrence) and (2) dividing that product (which, following the first occurrence
of a Section 13 Event, shall be referred to as the "Total Exercise Price" for
each Right and for all purposes of this Agreement) by 50% of the current per
share market price (determined pursuant to Section 11(d) hereof) of the Common
Shares of such Principal Party on the date of consummation of such Section 13
Event;

                           (B) such Principal Party shall thereafter be liable
for, and shall assume, by virtue of such Section 13 Event, all the obligations
and duties of the Company pursuant to this Agreement;

                           (C) the term "Company" shall thereafter be deemed to
refer to such Principal Party, it being specifically intended that the
provisions of Section 11 hereof shall apply only to such Principal Party
following the first occurrence of a Section 13 Event;

                           (D) such Principal Party shall take such steps
(including, but not limited to, the reservation of a sufficient number of its
Common Shares) in connection with the consummation of any such transaction as
may be necessary to assure that the provisions hereof shall thereafter be
applicable, as nearly as reasonably may be, in relation to its Common Shares
thereafter deliverable upon the exercise of the Rights.

                  (b)      "Principal Party" shall mean, in the case of any
transaction described in clause (i), (ii) or (iii) of Section 13(a), the Person
or Acquiring Person referred to therein (or such



                                       26

<PAGE>   30



Person's or Acquiring Person's successor, including, if applicable, the Company,
if it is the surviving corporation), PROVIDED, HOWEVER, that in any such case,
(i) if such Person is a direct or indirect Subsidiary of another Person,
"Principal Party" shall refer to such other Person and (ii) in case such Person
is a Subsidiary, directly or indirectly, of more than one Person, "Principal
Party" shall refer to whichever of such Persons is the issuer of the Common
Shares having the greatest aggregate value, and PROVIDED, FURTHER, that for
purposes of transactions described in clause (iii) hereof, "Principal Party"
shall refer to that Person receiving the greatest portion of the assets or
earning power transferred pursuant to such transaction or transactions.

                  (c) If, for any reason, the Rights cannot be exercised for
Common Shares of such Principal Party as provided in Section 13(a), then each
holder of Rights shall have the right to exchange its Rights for cash from such
Principal Party in an amount equal to the number of Common Shares that it would
otherwise be entitled to purchase times 50% of the current per share market
price, as determined pursuant to Section 11(d) hereof, of such Common Shares of
such Principal Party. If, for any reason, the foregoing formulation cannot be
applied to determine the cash amount into which the Rights are exchangeable,
then the Board of Directors, based upon the advice of one or more nationally
recognized investment banking firms, and based upon the total value of the
Company, shall determine such amount reasonably and with good faith to the
holders of Rights. Any such determination shall be final and binding on the
Rights Agent.

                  (d) Notwithstanding anything in this Agreement to the
contrary, Section 13 shall not be applicable to a transaction described in
clauses (i) and (ii) of Section 13(a) if: (i) such transaction is consummated
with a Person or Persons who acquired Common Shares pursuant to a Permitted
Offer (or a wholly-owned Subsidiary of any such Person or Persons); (ii) the
price per share of Common Shares offered in such transaction is not less than
the price per share of Common Shares paid to all holders of Common Shares whose
shares were purchased pursuant to such Permitted Offer; and (iii) the form of
consideration being offered to the remaining holders of Common Shares pursuant
to such transaction is the same form as the form of consideration paid pursuant
to such Permitted Offer. Upon consummation of any such transaction contemplated
by this Section 13(d), all rights hereunder shall expire.

                  (e) The Company shall not consummate any Section 13 Event
unless the Principal Party shall have a sufficient number of authorized Common
Shares that 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
thereto the Company and such issuer shall have executed and delivered to the
Rights Agent a



                                       27

<PAGE>   31



supplemental agreement confirming that such Principal Party shall, upon
consummation of such Section 13 Event, assume this Agreement in accordance with
Sections 13(a) and (b) hereof, that all rights of first refusal or preemptive
rights in respect of the issuance of Common Shares of such Principal Party upon
exercise of outstanding Rights have been waived, that there are no rights,
warrants, instruments or securities outstanding or any agreements or
arrangements which, as a result of the consummation of such transaction, would
eliminate or substantially diminish the benefits intended to be afforded by the
Rights and that such transaction shall not result in a default by such Principal
Party under this Agreement, and further providing that, as soon as practicable
after the date of such Section 13 Event, such Principal Party will:

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

                           (ii)     use its best efforts to list (or continue
the listing of) the Rights and the securities purchasable upon exercise of the
Rights on a national securities exchange or to meet the eligibility requirements
for quotation on Nasdaq; and

                           (iii)    deliver to holders of the Rights historical
financial statements for such Principal Party which comply in all respects with
the requirements for registration on Form 10 (or any successor form) under the
Exchange Act.

                           In the event that at any time after the occurrence
of a Triggering Event some or all of the Rights shall not have been exercised at
the time of a transaction described in this Section 13, the Rights which have
not theretofore been exercised shall thereafter be exercisable in the manner
described in Section 13(a) (without taking into account any prior adjustment
required by Section 11(a)(ii)).

                  (f)      The provisions of this Section 13 shall similarly
apply to successive mergers or consolidations or sales or other transfers.

         Section 14. FRACTIONAL RIGHTS AND FRACTIONAL SHARES.

                  (a)      The Company shall not be required to issue fractions
of Rights or to distribute Rights Certificates which evidence fractional Rights.
In lieu of such fractional Rights, there shall



                                       28

<PAGE>   32



be paid to the registered holders of the Rights Certificates with regard to
which such fractional Rights would otherwise be issuable, an amount in cash
equal to the same fraction of the current market value of a whole Right. For the
purposes of this Section 14(a), the current market value of a whole Right shall
be the closing price of the Rights for the Trading Day immediately prior to the
date on which such fractional Rights would have been otherwise issuable, as
determined pursuant to the second sentence of Section 11(d) hereof.

                  (b) The Company shall not be required to issue fractions of
Preferred Shares (other than fractions that are integral multiples of one
one-thousandth of a Preferred Share) upon exercise of the Rights or to
distribute certificates which evidence fractional Preferred Shares (other than
fractions that are integral multiples of one one-thousandth of a Preferred
Share). In lieu of fractional Preferred Shares that are not integral multiples
of one one-thousandth of a Preferred Share, the Company shall pay to the
registered holders of Rights Certificates at the time such Rights are exercised
as herein provided an amount in cash equal to the same fraction of the current
market value of a Common Share. For purposes of this Section 14(b), the current
market value of a Common Share shall be the closing price of a Common Share (as
determined pursuant to the second sentence of Section 11(d) hereof) for the
Trading Day immediately prior to the date of such exercise.

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

         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 Rights
Certificates (and, prior to the Distribution Date, the registered holders of the
Common Shares); and any registered holder of any Rights 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 Rights Certificate (or, prior to the
Distribution Date, of the Common Shares), may, in his or her own behalf and for
his or her own benefit, enforce, and may institute and maintain any suit, action
or proceeding against the Company to enforce, or otherwise act in respect of,
his or her right to exercise the Rights evidenced by such Rights Certificate in
the manner provided in such Rights Certificate and in this Agreement. Without
limiting the foregoing or any remedies available to the holders of Rights, it is
specifically acknowledged that the holders of Rights would not have an adequate
remedy at law for any breach of this Agreement and will be entitled to specific
performance of the obligations under and injunctive relief against actual or
threatened violators of, the obligations of any Person subject to this
Agreement.



                                       29

<PAGE>   33



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

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

                  (b) after the Distribution Date, the Rights Certificates are
transferable only on the registry books of the Rights Agent if surrendered at
the principal office or offices of the Rights Agent designated for such purposes
duly endorsed or accompanied by a proper instrument of transfer and with the
appropriate forms and certificates fully executed; and

                  (c) subject to Sections 6(a) and 7(f) hereof, the Company and
the Rights Agent may deem and treat the person in whose name the Rights
Certificate (or, prior to the Distribution Date, the associated Common Shares
certificate) is registered as the absolute owner thereof and of the Rights
evidenced thereby (notwithstanding any notations of ownership or writing on the
Rights Certificates or the associated Common Shares certificate made by anyone
other than the Company or the Rights Agent) for all purposes whatsoever, and
neither the Company nor the Rights Agent shall be affected by any notice to the
contrary.

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

         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



                                       30

<PAGE>   34



the exercise and performance of its duties hereunder. The Company also agrees to
indemnify the Rights Agent for, and to hold it harmless against any loss,
liability or expense, incurred without 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 in the premises.

                  (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
Rights Certificate or certificate for the Common Shares or for other securities
of the Company, instrument of assignment or transfer, power of attorney,
endorsement, affidavit, letter, notice, direction, consent, certificate,
statement or other paper or document believed by it to be genuine and to be
signed, executed and, where necessary, verified or acknowledged, by the proper
Person or Persons, or otherwise upon the advice of counsel as set forth in
Section 20 hereof.

         Section 19. MERGER OR CONSOLIDATION OR CHANGE OF NAME OF RIGHTS AGENT.

                  (a) Any corporation into which the Rights Agent or any
successor Rights Agent may be merged or with which it may be consolidated, or
any corporation resulting from any merger or consolidation to which the Rights
Agent or any successor Rights Agent shall be a party, or any corporation
succeeding to the 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, HOWEVER, 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 Rights Certificates shall
have been countersigned but not delivered, any such successor Rights Agent may
adopt the counter-signature of the predecessor Rights Agent and deliver such
Rights Certificates so countersigned; and in case at that time any of the Rights
Certificates shall not have been countersigned, any successor Rights Agent may
countersign such Rights Certificates either in the name of the predecessor
Rights Agent or in the name of the successor Rights Agent; and in all such cases
such Rights Certificates shall have the full force provided in the Rights
Certificates and in this Agreement.

                  (b) In case at any time the name of the Rights Agent shall be
changed and at such time any of the Rights Certificates



                                       31

<PAGE>   35



shall have been countersigned but not delivered, the Rights Agent may adopt the
countersignature under its prior name and deliver Rights Certificates so
countersigned; and in case at that time any of the Rights Certificates shall not
have been countersigned, the Rights Agent may countersign such Rights
Certificates either in its prior name or in its changed name; and in all such
cases such Rights Certificates shall have the full force provided in the Rights
Certificates and in this Agreement.

         Section 20. DUTIES OF RIGHTS AGENT. The Rights Agent undertakes the
duties and obligations imposed by this Agreement upon the following terms and
conditions, by all of which the Company and the holders of Rights Certificates,
by their acceptance thereof, shall be bound:

                  (a) The Rights Agent may consult with legal counsel (who may
be legal counsel for the Company), and the opinion or advice 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 or advice.

                  (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 (including, without limitation, the identity of any Acquiring Person and
the determination of "current per share market price") be proved or established
by the Company prior to taking or suffering any action hereunder, such fact or
matter (unless other evidence in respect thereof be herein specifically
prescribed) may be deemed to be conclusively proved and established by a
certificate signed by any one of the President, any Vice President, the Chief
Financial Officer, the Clerk or any Assistant Clerk of the Company and delivered
to the Rights Agent; and such certificate shall be full authorization to the
Rights Agent for any action taken or suffered in good faith by it under the
provisions of this Agreement in reliance upon such certificate.

                  (c) The Rights Agent shall be liable hereunder to the Company
and any other Person only for its own 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
Rights Certificates (except its countersignature thereof) or be required to
verify the same, but all such statements and recitals are and shall be deemed to
have been made by the Company only.

                  (e) The Rights Agent shall not be under any responsibility in
respect of the validity of this Agreement or the execution and delivery hereof
(except the due execution hereof by



                                       32

<PAGE>   36



the Rights Agent) or in respect of the validity or execution of any Rights
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 Rights Certificate; nor shall it be responsible for any
change in the exercisability of the Rights or any adjustment in the terms of the
Rights (including the manner, method or amount thereof) provided for in Sections
3, 11, 13, 23 or 24, or the ascertaining of the existence of facts that would
require any such change or adjustment (except with respect to the exercise of
Rights evidenced by Rights Certificates after receipt by the Rights Agent of a
certificate furnished pursuant to Section 12 describing such change or
adjustment); nor shall it by any act hereunder be deemed to make any
representation or warranty as to the authorization or reservation of any
Preferred Shares to be issued pursuant to this Agreement or any Rights
Certificate or as to whether any Preferred Shares will, when issued, be validly
authorized and issued, fully paid and nonassessable.

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

                  (g) The Rights Agent is hereby authorized and directed to
accept instructions with respect to the performance of its duties hereunder from
any one of the Chairman of the Board, the Chief Executive Officer, the
President, any Vice President, the Chief Financial Officer, the Clerk or any
Assistant Clerk of the Company, and to apply to such officers for advice or
instructions in connection with its duties, and it shall not be liable for any
action taken or suffered by it in good faith in accordance with instructions of
any such officer or for any delay in acting while waiting for those
instructions. Any application by the Rights Agent for written instructions from
the Company may, at the option of the Rights Agent, set forth in writing any
action proposed to be taken or omitted by the Rights Agent under this Rights
Agreement and the date on and/or after which such action shall be taken or such
omission shall be effective. The Rights Agent shall not be liable for any action
taken by, or omission of, the Rights Agent in accordance with a proposal
included in any such application on or after the date specified in such
application (which date shall not be less than five (5) Business Days after the
date any officer of the Company actually receives such application, unless any
such officer shall have consented in writing to an earlier date) unless, prior
to taking any such action (or the effective date in the case of an omission),
the Rights Agent shall have received written instructions in response to such
application specifying the action to be taken or omitted.



                                       33

<PAGE>   37



                  (h) The Rights Agent and any stockholder, director, officer or
employee of the Rights Agent may buy, sell or deal in any of the Rights or other
securities of the Company or become pecuniarily interested in any transaction in
which the Company may be interested, or contract with or lend money to the
Company or otherwise act as fully and freely as though it were not Rights Agent
under this Agreement. Nothing herein shall preclude the Rights Agent from acting
in any other capacity for the Company or for any other legal entity.

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

                  (j) No provisions of this Agreement shall require the Rights
Agent to expend or risk its own funds or otherwise incur any financial liability
in the performance of any of its duties hereunder or in the exercise of its
rights if there shall be reasonable grounds for believing that repayment of such
funds or adequate indemnification against such risk or liability is not
reasonably assured to it.

                  (k) If, with respect to any Rights Certificate surrendered to
the Rights Agent for exercise or transfer, the certificate attached to the form
of assignment or form of election to purchase, as the case may be, has either
not been completed or indicates an affirmative response to clause 1 and/or 2
thereof, the Rights Agent shall not take any further action with respect to such
requested exercise or transfer without first consulting with the Company.

         Section 21. CHANGE OF RIGHTS AGENT. The Rights Agent or any successor
Rights Agent may resign and be discharged from its duties under this Agreement
upon thirty (30) days' notice in writing mailed to the Company and to each
transfer agent of the Preferred Shares and the Common Shares by registered or
certified mail, and to the holders of the Rights Certificates by first-class
mail. The Company may remove the Rights Agent or any successor Rights Agent upon
thirty (30) 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 Preferred
Shares and the Common Shares by registered or certified mail, and to the holders
of the Rights Certificates by first-class mail. If the Rights Agent shall resign
or be removed or shall otherwise become incapable of acting, the Company shall
appoint a successor to the Rights Agent. If the Company shall fail to make such
appointment within a period of



                                       34

<PAGE>   38



thirty (30) days after giving notice of such removal or after it has been
notified in writing of such resignation or incapacity by the resigning or
incapacitated Rights Agent or by the holder of a Rights Certificate (who shall,
with such notice, submit his or her Rights Certificate for inspection by the
Company), then the registered holder of any Rights Certificate may apply to any
court of competent jurisdiction for the appointment of a new Rights Agent. Any
successor Rights Agent, whether appointed by the Company or by such a court
shall be a corporation organized and doing business under the laws of the United
States or of any state of the United States, in good standing, which is
authorized under such laws to exercise corporate trust or stockholder services
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 $50,000,000. After appointment, the
successor Rights Agent shall be vested with the same powers, rights, duties and
responsibilities as if it had been originally named as Rights Agent without
further act or deed; but the predecessor Rights Agent shall deliver and transfer
to the successor Rights Agent any property at the time held by it hereunder, and
execute and deliver any further assurance, conveyance, act or deed necessary for
the purpose. Not later than the effective date of any such appointment, the
Company shall file notice thereof in writing with the predecessor Rights Agent
and each transfer agent of the Preferred Shares and the Common Shares, and mail
a notice thereof in writing to the registered holders of the Rights
Certificates. Failure to give any notice provided for in this Section 21,
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 RIGHTS CERTIFICATE. Notwithstanding any of
the provisions of this Agreement or of the Rights to the contrary, the Company
may, at its option, issue new Rights Certificates evidencing Rights in such form
as may be approved by its Board of Directors to reflect any adjustment or change
in the Purchase Price and the number or kind or class of shares or other
securities or property purchasable under the Rights Certificates made in
accordance with the provisions of this Agreement. In addition, in connection
with the issuance or sale of Common Shares following the Distribution Date and
prior to the redemption or expiration of the Rights, the Company (a) shall, with
respect to Common Shares so issued or sold pursuant to the exercise of stock
options or under any employee plan or arrangement or upon the exercise,
conversion or exchange of securities hereinafter issued by the Company and (b)
may, in any other case, if deemed necessary or appropriate by the Board of
Directors of the Company, issue Rights Certificates representing the appropriate
number of Rights in connection with such issuance of sale; PROVIDED, HOWEVER,
that (i) no such Rights Certificate shall be issued and this



                                       35

<PAGE>   39



sentence shall be null and void AB INITIO if, and to the extent that, such
issuance or this sentence would create a significant risk of or result in
material adverse tax consequences to the Company or the Person to whom such
Rights Certificate would be issued or would create a significant risk of or
result in such options' or employee plans' or arrangements' failing to qualify
for otherwise available special tax treatment and (ii) no such Rights
Certificate shall be issued if, and to the extent that, appropriate adjustment
shall otherwise have been made in lieu of the issuance thereof.

         Section 23. REDEMPTION.

                  (a) The Company may, at its option and with the approval of
the Board of Directors, at any time prior to the Close of Business on the
earlier of (i) the tenth day following the Shares Acquisition Date or such later
date as may be determined by action of a majority of Continuing Directors then
in office and publicly announced by the Company or (ii) the Final Expiration
Date, redeem all but not less than all the then outstanding Rights at a
redemption price of $0.01 per Right, appropriately adjusted to reflect any stock
split, stock dividend or similar transaction occurring after the date hereof
(such redemption price being herein referred to as the "Redemption Price") and
the Company may, at its option, pay the Redemption Price either in Common Shares
(based on the current per share market price thereof (as determined pursuant to
Section 11(d) hereof) at the time of redemption) or cash; PROVIDED, HOWEVER, if
the Board of Directors of the Company authorizes redemption of the Rights on or
after the time a Person becomes an Acquiring Person, then there must be
Continuing Directors then in office and such authorization shall require the
concurrence of a majority of such Continuing Directors.

                  (b) Immediately upon the action of the Board of Directors of
the Company ordering the redemption of the Rights, evidence of which shall have
been filed with the Rights Agent, and without any further action and without any
notice, the right to exercise the Rights will terminate and the only right
thereafter of the holders of Rights shall be to receive the Redemption Price.
Within ten (10) days after the action of the Board of Directors ordering the
redemption of the Rights, the Company shall give notice of such redemption to
the Rights Agent and 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 Rights Agent or, prior to the Distribution Date, on the
registry books of the transfer agent for the Common Shares. Any notice which is
mailed in the manner herein provided shall be deemed given, whether or not the
holder receives the notice. Each such notice of redemption will state the method
by which the payment of the Redemption Price will be made. Neither the Company
nor any of its Affiliates or Associates may redeem, acquire or



                                       36

<PAGE>   40



purchase for value any Rights at any time in any manner other than that
specifically set forth in this Section 23 or in Section 24 hereof, and other
than in connection with the purchase of Common Shares prior to the Distribution
Date.

         Section 24. EXCHANGE.

                  (a) Subject to applicable laws, rules and regulations, and
subject to subsection (c) below, the Company may, at its option, by majority
vote of the Board of Directors and a majority vote of the Continuing Directors,
at any time after the 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 7(e) 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 "Ratio of Exchange"). 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), 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
ordering the exchange of any Rights pursuant to subsection (a) of this Section
24 and without any further action and without any notice, the right to exercise
such Rights shall terminate and the only right thereafter of a holder of such
Rights shall be to receive that number of Common Shares equal to the number of
such Rights held by such holder multiplied by the Ratio of Exchange. The Company
shall give public notice of any such exchange; PROVIDED, HOWEVER, that the
failure to give, or any defect in, such notice shall not affect the validity of
such exchange. The Company shall mail a notice of any such exchange to all of
the holders of such Rights at their last addresses as they appear upon the
registry books of the Rights Agent. Any notice which is mailed in the manner
herein provided shall be deemed given, whether or not the holder receives the
notice. Each such notice of exchange will state the method by which the exchange
of the Common Shares for Rights will be effected and, in the event of any
partial exchange, the number of Rights which will be exchanged. Any partial
exchange shall be effected pro rata based on the number of Rights (other than
Rights which have become void pursuant to the provisions of Section 7(e) hereof)
held by each holder of Rights.

                  (c) In the event that there shall not be sufficient Common
Shares issued but not outstanding or authorized but unissued



                                       37

<PAGE>   41



to permit any exchange of Rights as contemplated in accordance with Section
24(a), the Company shall either take such action as may be necessary to
authorize additional Common Shares for issuance upon exchange of the Rights or
alternatively, at the option of a majority of the Board of Directors, with
respect to each Right (i) pay cash in an amount equal to the Current Value (as
hereinafter defined), in lieu of issuing Common Shares in exchange therefor, or
(ii) issue debt or equity securities or a combination thereof, having a value
equal to the Current Value, in lieu of issuing Common Shares in exchange for
each such Right, where the value of such securities shall be determined by a
nationally recognized investment banking firm selected by the Board of Directors
by majority vote of the Board of Directors, or (iii) deliver any combination of
cash, property, Common Shares and/or other securities having a value equal to
the Current Value in exchange for each Right. For purposes of this Section 24(c)
only, the Current Value shall mean the product of the current per share market
price of Common Shares (determined pursuant to Section 11(d) on the date of the
occurrence of the event described above in subparagraph 9(a)) multiplied by the
number of Common Shares for which the Right otherwise would be exchangeable if
there were sufficient shares available. To the extent that the Company
determines that some action need be taken pursuant to clauses (i), (ii) or (iii)
of this Section 24(c), the Board of Directors may temporarily suspend the
exercisability of the Rights for a period of up to sixty (60) days following the
date on which the event described in Section 24(a) shall have occurred, in order
to seek any authorization of additional Common Shares and/or to decide the
appropriate form of distribution to be made pursuant to the above provision and
to determine the value thereof. In the event of any such suspension, the Company
shall issue a public announcement stating that the exercisability of the Rights
has been temporarily suspended.

                  (d) The Company shall not be required to issue fractions of
Common Shares or to distribute certificates which evidence fractional Common
Shares. In lieu of such fractional Common Shares, there shall be paid to the
registered holders of the Rights Certificates with regard to which such
fractional Common Shares would otherwise be issuable, an amount in cash equal to
the same fraction of the current per share market value of a whole Common Share
(as determined pursuant to the second sentence of Section 11(d) hereof).

                  (e) The Company may, at its option, by majority vote of the
Board of Directors, at any time before any Person has become an Acquiring
Person, exchange all or part of the then outstanding Rights for rights of
substantially equivalent value, as determined reasonably and with good faith by
the Board of Directors, based upon the advice of one or more nationally
recognized investment banking firms.



                                       38

<PAGE>   42



                  (f) Immediately upon the action of the Board of Directors
ordering the exchange of any Rights pursuant to subsection (e) of this Section
24 and without any further action and without any notice, the right to exercise
such Rights shall terminate and the only right thereafter of a holder of such
Rights shall be to receive that number of rights in exchange therefor as has
been determined by the Board of Directors in accordance with subsection (e)
above. The Company shall give public notice of any such exchange; PROVIDED,
HOWEVER, that the failure to give, or any defect in, such notice shall not
affect the validity of such exchange. The Company shall mail a notice of any
such exchange to all of the holders of such Rights at their last addresses as
they appear upon the registry books of the transfer agent for the Common Shares
of the Company. Any notice which is mailed in the manner herein provided shall
be deemed given, whether or not the holder receives the notice. Each such notice
of exchange will state the method by which the exchange of the Rights will be
effected.

         Section 25. NOTICE OF CERTAIN EVENTS.

                  (a) In case the Company shall propose to effect or permit to
occur any Section 13 Event, the Company shall give notice thereof to each holder
of Rights in accordance with Section 26 hereof at least twenty (20) days prior
to occurrence of such Section 13 Event.

                  (b) In case any Triggering Event or Section 13 Event shall
occur, then, in any such case, the Company shall as soon as practicable
thereafter give to each holder of a Rights Certificate, in accordance with
Section 26 hereof, a notice of the occurrence of such event, which shall specify
the event and the consequences of the event to holders of Rights under Sections
11(a)(ii) and 13 hereof.

         Section 26. NOTICES. Notices or demands authorized by this Agreement to
be given or made by the Rights Agent or by the holder of any Rights 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:

                  Micrion Corporation
                  One Corporation Way
                  Peabody, Massachusetts  01960
                  Attention:  President


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
Rights Certificate to or on the Rights Agent shall be sufficiently given or made
if sent by first-



                                       39

<PAGE>   43

class mail, postage prepaid, addressed (until another address is filed in
writing with the Company) as follows:

                  BankBoston, N.A.
                  c/o Boston EquiServe
                  150 Royall Street
                  Canton, MA  02102
                  Attention:  Ms. Angela Dray

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

         Section 27. SUPPLEMENTS AND AMENDMENTS. Prior to the Distribution Date,
the Company may supplement or amend this Agreement in any respect without the
approval of any holders of Rights and the Rights Agent shall, if the Company so
directs, execute such supplement or amendment. From and after the Distribution
Date, the Company and the Rights Agent may from time to time supplement or amend
this Agreement without the approval of any holders of Rights in order to (i)
cure any ambiguity, (ii) correct or supplement any provision contained herein
which may be defective or inconsistent with any other provisions herein, (iii)
shorten or lengthen any time period hereunder (which lengthening or shortening,
following the first occurrence of an event set forth in the proviso to Section
23(a) hereof, shall be effective only if there are Continuing Directors and
shall require the concurrence of a majority of such Continuing Directors) or
(iv) change or supplement the provisions hereunder in any manner that the
Company may deem necessary or desirable and that shall not adversely affect the
interests of the holders of Rights (other than an Acquiring Person or an
Affiliate or Associate of an Acquiring Person); PROVIDED, this Agreement may not
be supplemented or amended to lengthen, pursuant to clause (iii) of this
sentence, (A) a time period relating to when the Rights may be redeemed at such
time as the Rights are not then redeemable or (B) any other time period unless
such lengthening is for the purpose of protecting, enhancing, or clarifying the
rights of, and/or the benefits to, the holders of Rights. Upon the delivery of a
certificate from an appropriate officer of the Company that states that the
proposed supplement or amendment is in compliance with the terms of this Section
27, the Rights Agent shall execute such supplement or amendment. Prior to the
Distribution Date, the interests of the holders of Rights shall be deemed
coincident with the interests of the holders of Common Shares.

         Section 28. SUCCESSORS. All the covenants and provisions of this
Agreement by or for the benefit of the Company or the



                                       40

<PAGE>   44



Rights Agent shall bind and inure to the benefit of their respective successors
and assigns hereunder.

         Section 29. DETERMINATIONS AND ACTIONS BY THE BOARD OF DIRECTORS, ETC.
For all purposes of this Agreement, any calculation of the number of Common
Shares outstanding at any particular time, including for purposes of determining
the particular percentage of such outstanding Common Shares of which any Person
is the Beneficial Owner, shall be made in accordance with the last sentence of
Rule 13d-3(d)(1)(i) of the General Rules and Regulations under the Exchange Act.
The Board of Directors of the Company (and, where specifically provided for
herein, the Continuing Directors) shall have the exclusive power and authority
to administer this Agreement and to exercise all rights and powers specifically
granted to the Board, or the Company (or, where specifically provided for
herein, the Continuing Directors), or as may be necessary or advisable in the
administration of this Agreement, including, without limitation, the right and
power to (i) interpret the provisions of this Agreement and (ii) make all
determinations deemed necessary or advisable for the administration of this
Agreement (including a determination to redeem or not redeem the Rights or to
amend the Agreement). All such actions, calculations, interpretations and
determinations (including, for purposes of clause (y) below, all omissions with
respect to the foregoing) which are done or made by the Board (or, where
specifically provided for herein, by the Continuing Directors) in good faith,
shall (x) be final, conclusive and binding on the Company, the Rights Agent, the
holders of the Rights Certificates and all other parties and (y) not subject the
Board or the Continuing Directors to any liability to the holders of the Rights.

         Section 30. BENEFITS OF THIS AGREEMENT. Nothing in this Agreement shall
be construed to give to any Person other than the Company, the Rights Agent and
the registered holders of the Rights Certificates (and, prior to the
Distribution Date, 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 Rights Certificates (and, prior to the Distribution Date, the Common
Shares).

         Section 31. SEVERABILITY. If any term, provision, covenant or
restriction of this Agreement is held by a court of competent jurisdiction or
other authority to be invalid, void or unenforceable, the remainder of the
terms, provisions, covenants and restrictions of this Agreement shall remain in
full force and effect and shall in no way be affected, impaired or invalidated;
PROVIDED, HOWEVER, that notwithstanding anything in this Agreement to the
contrary, if any such term, provision, covenant or restriction is held by such
court or authority to be invalid, void or unenforceable and the Board of
Directors of the Company


                                       41
<PAGE>   45



determines in its good faith judgment that severing the invalid language from
this Agreement would adversely affect the purpose or effect of this Agreement,
the right of redemption set forth in Section 23 hereof shall be reinstated and
shall not expire until the close of business on the tenth day following the date
of such determination by the Board of Directors.

         Section 32. GOVERNING LAW. This Agreement and each Right and each
Rights Certificate issued hereunder shall be deemed to be a contract made under
the laws of The Commonwealth of Massachusetts and for all purposes shall be
governed by and construed in accordance with the laws of The Commonwealth of
Massachusetts applicable to contracts to be made and performed entirely within
Massachusetts.

         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.


            [The remainder of this page is left blank intentionally.]


                                       42
<PAGE>   46



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

Attest:                             MICRION CORPORATION



By: /s/ David M. Hunter             By: /s/ Nicholas P. Economou
    ----------------------------        ----------------------------------
    David M. Hunter                     Nicholas P. Economou
    Assistant Clerk                     President




Attest:                             BANKBOSTON, N.A.


By: /s/ Angela R. Dray              By: /s/ Michael Lapolla
    ----------------------------        ----------------------------------


Name: Angela R. Dray                Name: Michael Lapolla
      --------------------------          --------------------------------


Title: Account Manager              Title: Administration Manager
       -------------------------           -------------------------------








<PAGE>   47



                                    EXHIBIT A
                                    ---------

                        The Commonwealth of Massachusetts
                 Office of the Massachusetts Secretary of State
                    One Ashburton Place, Boston, Mass. 02108

                  CERTIFICATE OF VOTE OF DIRECTORS ESTABLISHING
                          A SERIES OF A CLASS OF STOCK

                     General Laws, Chapter 156B, Section 26

                                    ---------

         We, Nicholas P. Economou, President, and David M. Hunter, Assistant
Clerk of Micrion Corporation, located at One Corporation Way, Peabody,
Massachusetts 01960, do hereby certify that at a meeting of the directors of the
corporation held on July 23, 1997, the following vote establishing and
designating a series of a class of stock and determining the relative rights and
preferences thereof was duly adopted:

         Section 1. DESIGNATION AND AMOUNT. The shares of such series shall be
designated as "Series A Junior Preferred Stock," no par value per share, and the
number of shares constituting such series shall be 15,000.

         Section 2. DIVIDENDS AND DISTRIBUTIONS.

                  (A) Subject to the prior and superior right of the holders of
any shares of any series of Preferred Stock ranking prior and superior to the
shares of Series A Junior Preferred Stock with respect to dividends, the holders
of shares of Series A Junior Preferred Stock shall be entitled to receive when,
as and if declared by the Board of Directors out of funds legally available for
the purpose, quarterly dividends payable in cash on the last day of March, June,
September and December in each year (each such date being referred to herein as
a "Quarterly Dividend Payment Date") commencing on the first Quarterly Dividend
Payment Date after the first issuance of a share or fraction of a share of
Series A Junior Preferred Stock, in an amount per share (rounded to the nearest
cent) equal to, subject to the provision for adjustment hereinafter set forth,
1,000 times the aggregate per share amount of all cash dividends, and 1,000
times the aggregate per share amount (payable in kind) of all non-cash dividends
or other distributions other than a dividend payable in shares of Common Stock
or a subdivision of the outstanding shares of Common Stock (by reclassification
or otherwise), declared on the Common Stock of the Corporation (the "Common
Stock") since the immediately preceding Quarterly Dividend Payment Date, or,
with respect to the first Quarterly Dividend Payment Date, since the first
issuance of any share or fraction of a share of Series A Junior Preferred



<PAGE>   48



Stock. In the event the Corporation shall at any time after [_____] [__], 1997
(the "Rights Declaration Date") (i) declare any dividend on Common Stock payable
in shares of Common Stock, (ii) subdivide the outstanding Common Stock, or (iii)
combine the outstanding Common Stock into a smaller number of shares, then in
each such case the amount to which holders of shares of Series A Junior
Preferred Stock were entitled immediately prior to such event under the
preceding sentence shall be adjusted by multiplying such amount by a fraction,
the numerator of which is the number of shares of Common Stock outstanding
immediately after such event and the denominator of which is the number of
shares of Common Stock that ere outstanding immediately prior to such event.

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

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

         Section 3. VOTING RIGHTS. The holders of shares of Series A Junior
Preferred Stock shall have the following voting rights.

                  (A) Subject to the provision for adjustment hereinafter set
forth, each share of Series A Junior Preferred Stock shall entitle the holder
thereof to 1,000 votes on all matters submitted to a vote of the stockholders of
the Corporation. In the event the



                                        2

<PAGE>   49



Corporation shall at any time after the Rights Declaration Date (i) declare any
dividend on Common Stock payable in shares of Common Stock, (ii) subdivide the
outstanding Common Stock, or (iii) combine the outstanding Common Stock to a
smaller number of shares, then in each such case the number of votes per share
to which holders of shares of Series A Junior Preferred Stock were entitled
immediately prior to such event shall be adjusted by multiplying such number by
a fraction, the numerator of which is the number of shares of Common Stock
outstanding immediately after such event and the denominator of which is the
number of shares of Common Stock that were outstanding immediately prior to such
event.

                  (B)      Except as otherwise provided herein or by law, the
holders of shares of Series A Junior Preferred Stock and the holders of shares
of Common Stock shall vote together as one class on all matters submitted to a
vote of stockholders of the corporation.

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

         Section 4. CERTAIN RESTRICTIONS.

                  (A)      The Corporation shall not declare any dividend on,
make any distribution on, or redeem or purchase or otherwise acquire for
consideration any shares of Common Stock after the first issuance of a share or
fraction of a share of Series A Junior Preferred Stock unless concurrently
therewith it shall declare a dividend on the Series A Junior Preferred Stock as
required by Section 2 hereof.

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

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

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



                                        3

<PAGE>   50



the Series A Junior Preferred Stock and all such parity stock on which dividends
are payable or in arrears in proportion to the total amounts to which the
holders of all such shares are then entitled;

                           (iii)    redeem or purchase or otherwise acquire
for consideration shares of any stock ranking on a parity (either as to
dividends or upon liquidation, dissolution or winding up) with the Series A
Junior Preferred Stock, PROVIDED THAT the Corporation may at any time redeem,
purchase or otherwise acquire shares of any such parity stock in exchange for
shares of any stock of the Corporation ranking junior (either as to dividends or
upon dissolution, liquidation or winding up) to the Series A Junior Preferred
Stock;

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

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

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

         Section 6. LIQUIDATION, DISSOLUTION OR WINDING UP.

                  (A)      Upon any liquidation (voluntary or otherwise),
dissolution or winding up of the Corporation, no distribution shall be made to
the holders of shares of stock ranking junior (either as to dividends or upon
liquidation, dissolution or winding up) to the Series A Junior Preferred Stock
unless, prior thereto, the holders of shares of Series A Junior Preferred Stock
shall have received an amount equal to accrued and unpaid dividends and
distributions



                                        4

<PAGE>   51



thereon, whether or not declared, to the date of such payment, plus an amount
equal to the greater of (1) $1,000 per share, PROVIDED THAT in the event the
Corporation does not have sufficient assets, after payment of its liabilities
and distribution to holders of Preferred Stock ranking prior to the Series A
Junior Preferred Stock, available to permit payment in full of the $1,000 per
share amount, the amount required to be paid under this Section 6(A)(1) shall,
subject to Section 6(B) hereof, equal the value of the amount of available
assets divided by the number of outstanding shares of Series A Junior Preferred
Stock or (2) subject to the provisions for adjustment hereinafter set forth,
1,000 times the aggregate per share amount to be distributed to the holders of
Common Stock (the greater of (1) or (2), the "Series A Liquidation Preference").
In the event the Corporation shall at any time after the Rights Declaration Date
(i) declare any dividend on Common Stock payable in shares of Common Stock, (ii)
subdivide the outstanding Common Stock, or (iii) combine the outstanding Common
Stock into a smaller number of shares, then in each such case the amount to
which holders of shares of Series A Junior Preferred Stock were entitled
immediately prior to such event under clause (2) of the preceding sentence shall
be adjusted by multiplying such amount by a fraction the numerator of which is
the number of shares of Common Stock that were outstanding immediately after
such event and the denominator of which is the number of shares of Common Stock
that were outstanding immediately prior to such event.

                  (B) In the event, however, that there are not sufficient
assets available to permit payment in full of the Series A Liquidation
Preference and the liquidation preferences of all other series of Preferred
Stock, if any, which rank on a parity with the Series A Junior Preferred Stock,
then such remaining assets shall be distributed ratably to the holders of such
parity shares in proportion to their respective liquidation preferences.

         Section 7. CONSOLIDATION, MERGER, ETC. In case the Corporation shall
enter into any consolidation, merger, combination or other transaction in which
the shares of Common Stock are exchanged for or changed into other stock or
securities, cash and/or any other property, then in any such case the shares of
Series A Junior Preferred Stock shall at the same time be similarly exchanged or
changed in an amount per share (subject to the provision for adjustment
hereinafter set forth) equal to 1,000 times the aggregate amount of stock,
securities, cash and/or any other property (payable in kind), as the case may
be, into which or for which each share of Common Stock is changed or exchanged.
In the event the Corporation shall at any time after the Rights Declaration Date
(i) declare any dividend on Common Stock payable in shares of Common Stock, (ii)
subdivide the outstanding Common Stock, or (iii) combine the outstanding Common
Stock into a smaller number of shares, then in each such case the amount set
forth in the preceding sentence with respect to the exchange or change of



                                        5

<PAGE>   52



shares of Series A Junior Preferred Stock shall be adjusted by multiplying such
amount by a fraction the numerator of which is the number of shares of Common
Stock outstanding immediately after such event and the denominator of which is
the number of shares of Common Stock that were outstanding immediately prior to
such event.

         Section 8. NO REDEMPTION. The shares of Series A Junior Preferred Stock
shall not be redeemable.

         Section 9. RANKING. The Series A Junior Preferred Stock shall rank
junior to all other series of the Corporation's Preferred Stock as to the
payment of dividends and the distribution of assets, unless the terms of any
such series shall provide otherwise.

         Section 10. AMENDMENT. The Articles of Organization of the Corporation
shall not be further amended in any manner which would materially alter or
change the powers, preference or special rights of the Series A Junior Preferred
Stock so as to affect them adversely without the affirmative vote of the holders
of a majority or more of the outstanding shares of Series A Junior Preferred
Stock, voting separately as a class.

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




                                        6

<PAGE>   53



         IN WITNESS WHEREOF AND UNDER THE PAINS AND PENALTIES OF PERJURY, we
have hereto signed our names this 28th day of July, 1997.


                                            --------------------------------
                                            Nicholas P. Economou, President



                                            --------------------------------
                                            David M. Hunter, Assistant Clerk








                                        7

<PAGE>   54



                                    EXHIBIT B
                                    ---------

                           FORM OF RIGHTS CERTIFICATE
                           --------------------------


Certificate No. ___.                                                 ____ Rights


NOT EXERCISABLE AFTER July 30, 2007 OR EARLIER IF TERMINATED BY THE COMPANY OR
IF THE COMPANY EXCHANGES THE RIGHTS PURSUANT TO THE RIGHTS AGREEMENT. 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, RIGHTS
BENEFICIALLY OWNED BY AN ACQUIRING PERSON OR AN AFFILIATE OR ASSOCIATE OF AN
ACQUIRING PERSON (AS SUCH TERMS ARE DEFINED IN THE RIGHTS AGREEMENT) AND ANY
SUBSEQUENT HOLDER OF SUCH RIGHTS MAY BECOME NULL AND VOID. [THE RIGHTS
REPRESENTED BY THIS RIGHTS CERTIFICATE ARE OR WERE BENEFICIALLY OWNED BY A
PERSON WHO WAS OR BECAME AN ACQUIRING PERSON OR AN AFFILIATE OR ASSOCIATE OF AN
ACQUIRING PERSON (AS SUCH TERMS ARE DEFINED IN THE RIGHTS AGREEMENT).
ACCORDINGLY, THIS RIGHTS CERTIFICATE AND THE RIGHTS REPRESENTED HEREBY MAY
BECOME NULL AND VOID IN THE CIRCUMSTANCES SPECIFIED IN SECTION 7(e) OF SUCH
RIGHTS AGREEMENT.](1)


                               Rights Certificate


         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 July 30, 1997 (the "Rights
Agreement"), between MICRION CORPORATION, a Massachusetts corporation (the
"Company"), and BANKBOSTON, N.A. (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., Massachusetts time, on ___________ at
the office of the Rights Agent designated for such purpose, or at the office of
its successor as Rights Agent, one one-thousandth of a fully paid non-assessable
share of Series A Junior Preferred Stock, par value $0.01 per share, (the
"Preferred Shares"), of the Company, at a purchase price of $90 per
one-thousandth of a Preferred Share (the "Purchase Price"), upon presentation
and surrender of this Rights Certificate with the Form of Election to Purchase
and related Certificate duly executed. The number of Rights evidenced by this
Rights Certificate (and the number of one-thousandths of a Preferred Share which
may be

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



                                        2

<PAGE>   55



purchased upon exercise hereof) set forth above are the number and Purchase
Price as of July 30, 1997 based on the Preferred Shares as constituted at such
date. As provided in the Rights Agreement, the Purchase Price and the number and
kind of Preferred Shares or other securities which may be purchased upon the
exercise of the Rights evidenced by this Rights Certificate are subject to
modification and upon the happening of certain events.

         This Rights Certificate is subject to all of the terms, provisions and
conditions of the Rights Agreement, which terms, provisions and conditions are
hereby incorporated herein by reference and made a part hereof and to which
Rights Agreement reference is hereby made for a full description of the rights,
limitations of rights, obligations, duties and immunities hereunder of the
Rights Agent, the Company and the holders of the Rights Certificates, which
limitations of rights include the temporary suspension of the exercisability of
such Rights under the specific circumstances set forth in the Rights Agreement.
Copies of the Rights Agreement are on file at the principal executive offices of
the Company and the above-mentioned office of the Rights Agent.

         Subject to the provisions of the Rights Agreement, the Rights evidenced
by this Rights Certificate (i) may be redeemed by the Company, at its option, at
a redemption price of $0.01 per Right or (ii) may be exchanged by the Company in
whole or in part for Common Shares, substantially equivalent rights or other
consideration as determined by the Company.

         This Rights Certificate, with or without other Rights Certificates,
upon surrender at the office of the Rights Agent designated for such purpose,
may be exchanged for another Rights Certificate or Rights Certificates of like
tenor and date evidencing Rights entitling the holder to purchase a like
aggregate amount of securities as the Rights evidenced by the Rights Certificate
or Rights Certificates surrendered shall have entitled such holders to purchase.
If this Rights Certificate shall be exercised in part, the holder shall be
entitled to receive upon surrender hereof another Rights Certificate or Rights
Certificates for the number of whole Rights not exercised.

         No fractional portion of less than one one-thousandth of a Preferred
Share will be issued upon the exercise of any Right or Rights evidenced hereby
but in lieu thereof a cash payment will be made, as provided in the Rights
Agreement.

         No holder of this Rights Certificate, as such, shall be entitled to
vote or receive dividends or be deemed for any purpose the holder of the
Preferred Shares or of any other securities of the Company which may at any time
be issuable on the exercise hereof, nor shall anything contained in the Rights
Agreement or herein be construed to confer upon the holder hereof, as such, any



                                        3

<PAGE>   56



of the rights of a stockholder of the Company or any right to vote for the
election of directors or upon any matter submitted to stockholders at any
meeting thereof, or to give or withhold consent to any corporate action, or to
receive notice of meetings or other actions affecting stockholders (except as
provided in the Rights Agreement), or to receive dividends or subscription
rights, or otherwise, until the Right or Rights evidenced by this Rights
Certificate shall have been exercised as provided in the Rights Agreement.

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

         WITNESS the facsimile signature of the proper officers of the Company
and its corporate seal. Dated as of ________ ___, 19__.

Attest:                                       MICRION CORPORATION


                                              By:
- --------------------------------                  ------------------------------
Assistant Clerk                                   President


Countersigned:


BANKBOSTON, N.A.,
as Rights Agent


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





                                        4

<PAGE>   57





                   Form of Reverse Side of Rights Certificate

                               FORM OF ASSIGNMENT
                               ------------------

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


         FOR VALUE RECEIVED _________________ hereby sells, assigns and
transfers unto

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

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



Dated: ___________, 19___                    ___________________________________
                                             Signature



Signature Guaranteed:

         The signature(s) should be guaranteed by an eligible guarantor
institution (Banks, Stockbrokers, Savings and Loan Associations and Credit
Unions with membership in an approved signature guarantee medallion program)
pursuant to S.E.C. Rule 17Ad-15.





                                        5

<PAGE>   58



             Form of Reverse Side of Rights Certificate -- continued

                                   CERTIFICATE
                                   -----------


         The undersigned hereby certifies by checking the appropriate boxes
that:

         (1) this Rights Certificate [ ] is [ ] not being sold, assigned and
transferred by or on behalf of a Person who is or was an Acquiring Person, or an
Affiliate or Associate of 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 Rights Certificate from
any Person who is, was or subsequently became an Acquiring Person or an
Affiliate or Associate of any such Person.



Dated: ___________, 19___                    ___________________________________
                                             Signature

Signature Guaranteed:

         The signature(s) should be guaranteed by an eligible guarantor
institution (Banks, Stockbrokers, Savings and Loan Associations and Credit
Unions with membership in an approved signature guarantee medallion program)
pursuant to S.E.C. Rule 17Ad-15.





                                        6

<PAGE>   59



             Form of Reverse Side of Rights Certificate -- continued

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

                      (To be executed if holder desires to
                        exercise the Rights Certificate)

To:________________________

         The undersigned hereby irrevocably elects to exercise _________________
Rights represented by this Rights Certificate to purchase the number of
one-thousandths of a Preferred Share issuable upon the exercise of such Rights
and requests that certificates for such number of one-thousandths of a Preferred
Share 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 Rights
Certificate, a new Rights Certificate for the balance remaining of such Rights
shall be registered in the name of and delivered to:

Please insert social security or
other identifying number

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

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


Dated: ___________, 19___                    ___________________________________
                                             Signature

Signature Guaranteed:

         The signature(s) should be guaranteed by an eligible guarantor
institution (Banks, Stockbrokers, Savings and Loan Associations and Credit
Unions with membership in an approved signature guarantee medallion program)
pursuant to S.E.C. Rule 17Ad-15.






                                        7

<PAGE>   60




             Form of Reverse Side of Rights Certificate -- continued

                                   CERTIFICATE
                                   -----------


         The undersigned hereby certifies by checking the appropriate boxes
that:

         (1) the Rights evidenced by this Rights 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 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 Rights Certificate from
any Person who is, was or subsequently became an Acquiring Person or an
Affiliate or Associate of any such Person.



Dated: ___________, 19___                    ___________________________________
                                             Signature


Signature Guaranteed:

         The signature(s) should be guaranteed by an eligible guarantor
institution (Banks, Stockbrokers, Savings and Loan Associations and Credit
Unions with membership in an approved signature guarantee medallion program)
pursuant to S.E.C. Rule 17Ad-15.




                                        8

<PAGE>   61



             Form of Reverse Side of Rights Certificate -- continued


                                     NOTICE
                                     ------


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







                                        9

<PAGE>   62



                                    EXHIBIT C
                                    ---------

                               MICRION CORPORATION
                             STOCKHOLDER RIGHTS PLAN


                                Summary of Rights
                                -----------------




Distribution and                    The Board of Directors has declared a
Transfer of                         dividend of one Right for each share of
Rights; Rights                      MICRION CORPORATION Common Stock
Certificate:                        outstanding.  Prior to the Distribution Date
- -----------                         referred to below, the Rights will be
                                    evidenced by and trade with the
                                    certificates for the Common Stock. After
                                    the Distribution Date, MICRION CORPORATION
                                    (the "Company") will mail Rights
                                    certificates to the Company's stockholders
                                    and the Rights will become transferable
                                    apart from the Common Stock.

Distribution                        Rights will separate from the Common Stock
Date:                               and become exercisable following the tenth
- ----                                business day (the "Distribution Date") (or
                                    such later date as may be determined by a
                                    majority of the Directors not affiliated
                                    with the acquiring person or group (the
                                    "Continuing Directors")) after a person or
                                    group (a) acquires beneficial ownership of
                                    15% or more of the Company's Common Stock or
                                    (b) announces a tender or exchange offer,
                                    the consummation of which would result in
                                    ownership by a person or group of 15% or
                                    more of the Company's Common Stock.

Preferred Stock                     After the Distribution Date, each Right will
Purchasable Upon                    entitle the holder to purchase, for $90, a
Exercise of                         fraction of a share of the Company's
Rights:                             Preferred Stock with economic terms similar
- ------                              to that of one share of the Company's Common
                                    Stock.






<PAGE>   63




Flip-In:                            If an acquiror (an "Acquiring Person")
- -------                             obtains 15% or more of the Company's Common
                                    Stock (other than pursuant to a tender offer
                                    deemed fair by the Board of Directors (a
                                    "Permitted Offer")), THEN each Right (other
                                    than Rights owned by an Acquiring Person or
                                    its affiliates) will entitle the holder
                                    thereof to purchase, for the exercise price,
                                    a number of shares of the Company's Common
                                    Stock having a then current market value of
                                    twice the exercise price.

Flip-Over:                          If, after the Shares Acquisition Date
- ---------                           (defined below), (a) the Company merges into
                                    another entity, (b) an acquiring entity
                                    merges into the Company or (c) the Company
                                    sells more than 50% of the Company's assets
                                    or earning power, THEN each Right (other
                                    than Rights owned by an Acquiring Person or
                                    its affiliates) will entitle the holder
                                    thereof to purchase, for the exercise price,
                                    a number of shares of Common Stock of the
                                    person engaging in the transaction having a
                                    then current market value of twice the
                                    exercise price (unless the transaction
                                    satisfies certain conditions and is
                                    consummated with a person who acquired
                                    shares pursuant to a Permitted Offer, in
                                    which case the Rights will expire).

Exchange                            At any time after an event triggering the
Provision:                          flip-in or flip-over rights and prior to the
- ---------                           acquisition by the Acquiring Person of 50%
                                    or more of the outstanding Common Stock, the
                                    Board of Directors of the Company may
                                    exchange the Rights (other than Rights owned
                                    by the Acquiring Person or its affiliates),
                                    in whole or in part, at an exchange ratio of
                                    one Common Share per Right (subject to
                                    adjustment).

Redemption of                       Rights will be redeemable at the Company's
The Rights:                         option for $0.01 per Right at any time on or
- ----------                          prior to the tenth day (or such later date
                                    as may be determined by a majority of the
                                    Continuing Directors) after public
                                    announcement that a person has acquired
                                    beneficial ownership of 15% or more of the
                                    Company's Common Stock (the "Shares
                                    Acquisition Date").





<PAGE>   64



Expiration of                       The Rights expire on the earliest of (a)
The Rights:                         July 30, 2007, (b) exchange or redemption of
- ----------                          the Rights as described above, or (c)
                                    consummation of a merger or consolidation or
                                    sale of assets resulting in expiration of
                                    the Rights as described above.

Amendment of                        The terms of the Rights and the Rights
Terms of Rights:                    Agreement may be amended in any respect
- ---------------                     without the consent of the Rightsholders
                                    on or prior to the Distribution Date;
                                    thereafter, the terms of the Rights and the
                                    Rights Agreement may be amended without the
                                    consent of the Rights holders in order to
                                    cure any ambiguities or to make changes
                                    which do not adversely affect the interests
                                    of Rights holders (other than the Acquiring
                                    Person).

Voting Rights:                      Rights will not have any voting rights.
- -------------

Anti-Dilution                       Rights will have the benefit of certain
Provisions:                         customary anti-dilution provisions.
- ---------

Taxes:                              The Rights distribution should not be
- -----                               taxable for federal income tax purposes.
                                    However, following an event which renders
                                    the Rights exercisable or upon redemption
                                    of the Rights, stockholders may recognize
                                    taxable income.


The foregoing is a summary of certain principal terms of the Stockholder Rights
Plan only and is qualified in its entirety by reference to the detailed terms of
the Rights Agreement, dated as of July 30, 1997, between the Company and the
Rights Agent.





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