Document:

Exhibit 4.8

                            VALMONT INDUSTRIES, INC.
              INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE

               This Certificate is transferable in Omaha, Nebraska

COMMON STOCK
See Reverse For Certain Definitions
                                                               CUSIP 920253 10 1

This Certifies that

is the owner of

fully paid and non-assessable shares, of the common stock of the par value of
One Dollar ($1.00) per share of Valmont Industries, Inc. transferable on the
books of the Corporation by the holder hereof in person or by duly authorized
attorney upon surrender of this Certificate properly endorsed. This Certificate
and the shares represented hereby are issued and shall be held subject to all
provisions of the Certificate of Incorporation of the Corporation and all
amendments thereto (copies of which are on file with the Transfer Agent) to all
of which provisions each holder hereof by acceptance hereof assents. This
Certificate is not valid unless countersigned by the Transfer Agent and
registered by Registrar.

         In Witness Whereof the Corporation has caused this Certificate to be
signed by the facsimile signatures of its duly authorized officers and a
facsimile of its corporate seal to be hereunto affixed.

Dated

        Secretary                         Chairman and Chief Executive Officer
                           Countersigned and registered:
                           First National Bank of Omaha (Omaha, Nebraska)
                           Transfer Agent and Registrar,

                           By
                                    Authorized Officer

[Graphic Material consisting of the corporate seal]

<PAGE>

                            VALMONT INDUSTRIES, INC.

         The following abbreviations, when used in the inscription on the face
of this certificate, shall be construed as though they were written out in full
according to applicable laws or regulations:

         TEN COM -         as tenants in common
         TEN ENT -         as tenants by the entireties
         JT TEN -          as joint tenants with right of
                           survivorship and not as tenants
                           in common
         UNIF GIFT MIN ACT -        __________ Custodian __________
                                      (Cust)               (Minor)
                           under Uniform Gifts to Minors
                           Act __________________________
                                    (State)

         Additional abbreviations may also be used though not in the above list.
--------------------------------------------------------------------------------

     For value received __________________ hereby sell, assign and transfer unto

Please insert social security or other identifying number of assignee __________
________________________________________________________________________
(Please print or typewrite name and address including zip code of assignee)
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________ shares
of  the capital stock represented by the within Certificate, and do hereby
irrevocably constitute and appoint _____________________________________________
Attorney to transfer the said stock on the books of the within named Corporation
with full power of substitution in the premises.

Dated   ______________________________

        ______________________________

NOTICE: The signature to this assignment must correspond to the name as written
upon the face of the certificate in every particular, without alteration or
enlargement or any change whatever.

Signature(s) guaranteed:

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

This certificate also evidences and entitles the holder hereof to certain rights
as set forth in a Rights Agreement between Valmont Industries, Inc. and First
National Bank of Omaha, as Rights Agent, dated as of December 19, 1995, as the
same may be amended from time to time (the "Rights Agreement"), the terms of
which are hereby incorporated herein by reference and a copy of which is on file
at the principal executive offices of Valmont Industries, Inc. 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. Valmont Industries, Inc. will mail to the holder of this
certificate a copy of the Rights Agreement without charge after receipt of a
written request therefor. Under certain circumstances, as set forth in the
Rights Agreement, Rights issued to Acquiring Persons (as defined in the Rights
Agreement) and certain transferees thereof will become null and void and will no
longer be transferable.<PAGE>
                                                                    Exhibit 10.1

                           EMPLOYEE STOCK OPTION PLAN

                         OF MACK-CALI REALTY CORPORATION

SECTION 1.  INTRODUCTION.

         1.1 PURPOSE. The 1994 Employee Stock Option Plan was established by
Cali Realty Corporation ("Cali") in 1994 as the "1994 Employee Stock Option Plan
of Cali Realty Corporation" (the "1994 Employee Stock Option Plan"). The 1994
Employee Stock Option Plan is being amended and restated in its entirety and
renamed the "Employee Stock Option Plan of Mack-Cali Realty Corporation (the
"Plan") in order to reflect the change of Cali's name to Mack-Cali Realty
Corporation in December 1997 in connection with the acquisition of certain
office properties from The Mack Company and Patriot American Office Group, to
incorporate previously authorized amendments to the Plan and to clarify certain
procedures and definitions under the Plan.

         The purpose of the Plan is to advance and promote the interests of
Mack-Cali Realty Corporation (the "Corporation") and its Subsidiaries by
providing employees, consultants and advisors of the Corporation or its
Subsidiaries with an incentive to achieve corporate objectives, to attract and
retain employees, consultants and advisors of outstanding competence and to
provide such individuals with an equity interest in the Corporation through the
acquisition of Common Stock and by providing for payments to such individuals
based on the appreciation in value or value of such Common Stock. The Plan, as
amended and restated effective as of December 1, 1998, and as set forth herein
is intended to be construed as an employee benefit plan that satisfies the
requirements for exemption from the restrictions of Section 16(b) of the
Securities Exchange Act of 1934, as amended, pursuant to the applicable rules
promulgated thereunder.

<PAGE>

         1.2 DEFINITIONS. The following definitions are applicable to the Plan:

         (a)      Award.

         "Award" means Options, Restricted Stock, Stock Appreciation Rights
(SARs) or any combination thereof, granted under the Plan.

         (b)      Award Agreement.

         "Award Agreement" means the written agreement by which an Award shall
be evidenced.

         (c)      Beneficiary.

         "Beneficiary" means the beneficiary or beneficiaries designated in
accordance with Section 5.8 hereof to receive the amount, if any, payable under
the Plan upon the death of a Participant.

         (d)      Board.

         "Board" means the Board of Directors of the Corporation.

         (e)      Change in Control.

         "Change in Control" means that any of the following events has
occurred:

         (i)      any "person" or "group" of persons, as such terms are used in
                  Sections 13 and 14 of the Exchange Act, other than the
                  Corporation, any of its Subsidiaries, or any employee benefit
                  plan sponsored by the Corporation or any of its Subsidiaries,
                  becomes the "beneficial owner" (as such term is defined in
                  Rule 13d-3 under the Exchange Act) of thirty percent (30%) or
                  more of the Common Stock issued and outstanding immediately
                  prior to such acquisition;

         (ii)     any Common Stock is purchased pursuant to a tender or exchange
                  offer other than an offer by the Corporation; or

         (iii)    the dissolution or liquidation of the Corporation or the
                  consummation of any merger or consolidation of the Corporation
                  or any sale or other disposition of all or substantially all
                  of its assets, if the shareholders of the Corporation
                  immediately before

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<PAGE>

                  such transaction own, immediately after consummation of such
                  transaction, equity securities (other than options and other
                  rights to acquire equity securities) possessing less than
                  thirty percent (30%) of the voting power of the surviving or
                  acquiring corporation.

PROVIDED, HOWEVER, that notwithstanding anything in the Plan to the contrary, no
Change in Control shall be deemed to have occurred and no rights arising upon a
Change in Control described in Sections 2.2(f) and 4.7 hereof shall exist unless
(i) on a Plan wide basis, the Board directs to the contrary by resolution
adopted prior to the Change in Control or (ii) on a Participant by Participant
basis with respect to individual Participants who have employment or other
agreements with the Corporation or any Subsidiary which contain a definition of
change in control, the definition of change in control is met under such
employment or other agreement and such employment or other agreement specifies
that a change in control under such other employment or other agreement will be
considered a change in control for purposes of the Plan. Any resolution of the
Board adopted in accordance with the provisions of this Section directing that
this Section and Sections 2.2(f) and 4.7 hereof or any of such Sections become
ineffective may be rescinded or countermanded at any time with or without
retroactive effect by such Board.

         (f)      Code.

         "Code" means the Internal Revenue Code of 1986, as amended from time to
time.

         (g)      Committee.

         "Committee" means the committee appointed pursuant to Section 1.3
hereof or if no such Committee is appointed, the Board.

          (h)     Common Stock.

         "Common Stock" means the common stock, $.01 par value per share, of the

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Corporation.

         (i)      Corporation.

         "Corporation" means Mack-Cali Realty Corporation.

         (j)      Effective Date.

         "Effective Date" means December 1, 1998, the effective date of the
amendment and restatement of the Plan. The 1994 Employee Stock Option Plan was
originally effective on August 31, 1994.

         (k)      Eligible Individual.

         "Eligible Individual" means any Key Employee, consultant or advisor of
the Corporation or any Subsidiary.

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<PAGE>

         (l)      Exchange Act.

         "Exchange Act" means the Securities Exchange Act of 1934, as amended.
References to a particular section of, or rule under the Exchange Act include
references to successor provisions.

         (m)      Fair Market Value.

         "Fair Market Value" means the fair market value of the Common Stock
based upon the closing price of a Share as quoted on the New York Stock Exchange
at the end of the last business day preceding the Grant Date or other date of
determination, as reported in the New York edition of THE WALL STREET JOURNAL.

         (n)      Incentive Stock Option.

         "Incentive Stock Option" means an Option to purchase Common Stock that
qualifies as an incentive stock option within the meaning of Section 422 of the
Code.

         (o)      Immediate Family.

         "Immediate Family" means, with respect to a particular Participant, the
Participant's spouse, children and grandchildren.

         (p)      Key Employee.

         "Key Employee" means any employee of the Corporation or any of its
Subsidiaries, including any officer or director who is also an employee, who, in
the judgment of the Committee, is considered important to the future of the
Corporation. Nothing shall limit the Board from designating all or substantially
all employees as eligible for grants.

         (q)      Mature Shares.

         "Mature Shares" means Shares for which the holder thereof has good
title, free and clear of all liens and encumbrances, and which such holder
either (i) has held for at least six (6) months or (ii) has purchased from the
open market.

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<PAGE>

         (r)      Non-qualified Stock Option.

         "Non-qualified Stock Option" means an Option to purchase Common Stock
that does not qualify as an Incentive Stock Option.

         (s)      Option.

         "Option" means an Incentive Stock Option or a Non-qualified Stock
Option granted under the Plan.

         (t)      Option Price.

         "Option Price" means the purchase price per Share of an Option.

         (u)      Option Term.

         "Option Term" means the period beginning on the Grant Date of an Option
and ending on the expiration date of such Option, as specified in the Award
Agreement for such Option and as may, in the discretion of the Committee, and
consistent with the provisions of the Plan, be extended from time to time.

         (v)      Participant

         "Participant" means an Eligible Individual who has been granted an
Award or a Permitted Transferee.

         (w)      Permitted Transferee.

         "Permitted Transferee" means a person to whom an Award may be
transferred or assigned in accordance with Section 5.8 hereof.

         (x)      Plan

         "Plan" means the Employee Stock Option Plan of Mack-Cali Realty
Corporation, as amended and restated herein, and as may be amended from time to
time.

         (y)      Restricted Stock.

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<PAGE>

         "Restricted Stock" means Shares which are subject to forfeiture if the
Participant does not satisfy the Restrictions specified in the Award Agreement
applicable to such Restricted Stock.

         (z)      Restricted Period.

         "Restricted Period" means the period of time Restricted Stock are
subject to the Restrictions specified in the Award Agreement applicable to such
Restricted Stock.

          (aa)    Restrictions.

         "Restrictions" means those restrictions and conditions placed upon
Restricted Stock as determined by the Board in accordance with Section 4.2
hereof.

          (bb)    Rule 16b-3.

         "Rule 16b-3" means Rule 16b-3 of the SEC under the Exchange Act, as
amended from time to time, together with any successor rule.

         (cc)     SEC.

         "SEC" means the Securities and Exchange Commission.

         (dd)     Section 16 Participant.

         "Section 16 Participant" means a Participant who is subject to
potential liability under Section 16(b) of the Exchange Act with respect to
transactions involving equity securities of the Corporation.

         (ee)     Share.

         "Share" means a share of Common Stock.

         (ff)     Stock Appreciation Right or SAR.

         "Stock Appreciation Right" or "SAR" means a right granted under the
Plan in connection with an Option, or separately, to receive the appreciation in
value of Shares.

                                       7
<PAGE>

         (gg)     Subsidiary.

         "Subsidiary" means, for purposes of grants of Incentive Stock Options,
a corporation as defined in Section 424(f) of the Code (with the Corporation
treated as the employer corporation for purposes of this definition) and, for
all other purposes, a corporation or other entity with respect which the
Corporation (i) owns, directly or indirectly, fifty percent (50%) or more of the
then outstanding common stock in any corporation or (ii) has a fifty percent
(50%) or more ownership interest in any other entity.

         (hh)     10% Owner.

         "10% Owner" means a person who owns capital stock (including stock
treated as owned under Section 424(d) of the Code) possessing more than ten
percent (10%) of the combined voting power of all classes of capital stock of
the Corporation or any Subsidiary where "voting power" means the combined voting
power of the then outstanding securities of a corporation entitled to vote
generally in the election of directors.

         1.3 ADMINISTRATION. The Plan shall be administered by a committee (the
"Committee), which shall consist of two or more directors of the Corporation,
all of whom qualify as "Non Employee Directors" as defined in Rule 16b-3. The
number of members of the Committee shall from time to time be increased or
decreased, and shall be subject to such conditions, in each case as the Board
deems appropriate to permit transactions in Shares pursuant to the Plan to
satisfy such conditions of Rule 16b-3 as then in effect. In the event that the
Compensation Committee of the Board (the "Compensation Committee) meets the
requirements set forth in this Section 1.3 hereof, such Compensation Committee
shall be the Committee hereunder unless otherwise determined by the Board.

         A majority of the members of the Committee shall constitute a quorum.
The

                                       8
<PAGE>

Committee may act at a meeting, including a telephonic meeting, by action of a
majority of the members present, or without a meeting by unanimous written
consent.

         Subject to the express provisions of the Plan, the Committee shall have
full and final authority and discretion as follows:

                  (i)      to select the Participants from Eligible Individuals;

                  (ii)     to grant Options and/or Restricted Stock to
                           Participants in such combination and in such amounts
                           as it shall determine and to determine the terms and
                           conditions applicable to each such Award, including
                           the benefit payable under any SAR, and whether or not
                           specific Awards shall be identifiable with other
                           specific Awards, and if so whether they shall be
                           exercisable cumulatively with, or alternatively to,
                           such other specific Award;

                  (iii)    to determine the amount, if any, that a Participant
                           shall pay for Restricted Stock, the nature of the
                           Restrictions applicable to the Restricted Stock, and
                           the duration of the Restricted Period applicable to
                           the Restricted Stock;

                  (iv)     to determine the actual amount earned by each
                           Participant with respect to such Awards, the terms
                           and conditions of all Award Agreements (which need
                           not be identical) and with the consent of the
                           Participant, to amend any such Award Agreement at any
                           time, among other things, to permit transfers of such
                           Awards to the extent permitted by the Plan, except
                           that consent of the Participant shall not be required
                           for any amendment which (A) does not adversely affect
                           the rights of the Participant or (B) is necessary or
                           advisable (as determined by the Committee) to carry
                           out the purpose of the Award as a result of any
                           change in applicable law;

                  (v)      to determine consistent with the Code whether an
                           Option that is granted to a Participant is a
                           Non-qualified Stock Option or an Incentive Stock
                           Option, the number of Shares to be covered by each
                           such Option and the time or times when and the manner
                           in which each Option shall be exercisable;

                  (vi)     to amend any Incentive Stock Option with the consent
                           of the Participant so as to make it a Non-qualified
                           Stock Option;

                  (vii)    to cancel, with the consent of the Participant, any
                           outstanding Award(s) and to grant new Award(s) in
                           substitution therefor;

                  (viii)   to grant a SAR in connection with the grant of an
                           Option or separately;

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<PAGE>

                  (ix)     to accelerate the exercisability (including
                           exercisability within a period of less than one year
                           after the Grant Date) of, and to accelerate or waive
                           any or all of the terms and conditions applicable to,
                           any Award or any group of Awards for any reason and
                           at any time, including in connection with a
                           termination of employment or consultancy;

                  (x)      subject to the provisions of the Plan, to extend the
                           time during which any Award or group of Awards may be
                           exercised;

                  (xi)     to treat all or any portion of any period during
                           which a Participant is on military leave or on an
                           approved leave of absence from the Corporation or a
                           Subsidiary as a period of employment or service of
                           such Participant by the Corporation or any Subsidiary
                           for purposes of accrual of his or her rights under
                           his or her Awards;

                  (xii)    to interpret the Plan and make all determinations
                           necessary or advisable for the administration of the
                           Plan including the establishment, amendment or
                           revocation from time to time of guidelines or
                           regulations for the administration of the Plan, to
                           cause appropriate records to be established, and to
                           take all other actions considered necessary or
                           advisable for the administration of the Plan; and

                  (xiii)   to take any other action with respect to any matters
                           relating to the Plan for which it is responsible.

         All decisions, actions or interpretations of the Committee on all
matters relating to the Plan or any Award Agreement shall be final, binding and
conclusive upon all parties. No member of the Committee shall be liable for any
action or determination made in good faith with respect to the Plan or any
Award.

         1.4 PARTICIPATION. The Committee may, in its discretion, grant Awards
to any Eligible Individual, whether or not he or she has previously received an
Award. Participation in the Plan shall be limited to those Key Employees,
consultants and advisors who have received written notification from the
Committee, or from a person designated by the Committee, that they have been
selected to participate in the Plan. No such Eligible Individuals shall at any
time have the right to be a Participant unless selected by the

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Committee pursuant to the Plan. No Participant, having been granted an Award,
shall have the right to an additional Award in the future unless such Award is
granted by the Committee.

         1.5 MAXIMUM NUMBER OF SHARES AVAILABLE FOR AWARDS. Subject to
adjustment in accordance with Section 5.2 hereof, the maximum number of Shares
for which grants under the Plan shall be available is 4,980,188. In addition,
the Administrative Committee shall have the authority, in its sole discretion,
to grant additional Non-qualified Stock Options to a Participant who exercises
an Option and pays the exercise price in Common Stock, in a quantity equal to
the number of Common Stock delivered to the Corporation upon such exercise. In
the event any Awards granted under the Plan shall be forfeited, terminate or
expire, the number of Shares subject to such Award, to the extent of any such
forfeiture, termination or expiration, shall thereafter again be available for
grant under the Plan. The Common Stock distributed under the Plan may be
authorized and unissued shares, shares held in the treasury of the Corporation,
or shares purchased on the open market by the Corporation (at such time or times
and in such manner as it may determine). The Corporation shall be under no
obligation to acquire Common Stock for distribution to Participants before such
Common Stock is due and distributable.

         1.6 GENERAL CONDITIONS TO GRANTS. The Grant Date of an Award shall be
the date on which the Committee grants the Award or such later date as specified
in advance by the Committee. All Awards shall be evidenced by an Award Agreement
and any terms and conditions of an Award not set forth in the Plan shall be set
forth in the Award Agreement related to that Award or in the Participant's
employment or other agreement with the Corporation or any Subsidiary.

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<PAGE>

         SECTION 2. OPTIONS.

         2.1 AWARDS OF OPTIONS. Subject to the provisions of the Plan, the
Committee shall determine and designate from time to time those Eligible
Individuals to whom Incentive Stock Options, or Non-qualified Stock Options, or
both, shall be granted and the number of Shares to be granted to each such
Eligible Individual; PROVIDED, HOWEVER, that only Key Employees may receive
Incentive Stock Options and the aggregate fair market value (determined at the
time the Option is granted) of the shares with respect to which any incentive
stock options are exercisable for the first time by any Key Employee during any
calendar year under all incentive stock option plans of the Corporation and any
Subsidiary shall not exceed one hundred thousand dollars ($100,000) or such
other limit set forth in Section 422 of the Code (the "Limitations of the
Code"). If the aggregate fair market value of such shares exceeds the
Limitations of the Code, the excess Shares will be treated as Non-qualified
Options under this Plan. In reducing the number of Incentive Stock Options to
meet the Limitations of the Code, the most recently granted Incentive Stock
Options shall be reduced first. If a reduction of simultaneously granted Options
is necessary to meet the Limitations of the Code, the Committee may designate
which Shares are to be treated as Shares acquired pursuant to an Incentive Stock
Option. In the event that any Incentive Stock Options granted under the Plan
fail to meet the requirements for Incentive Stock Options as set forth in the
Code, such Incentive Stock Options will be treated as Non-qualified Stock
Options under the Plan. In determining the Eligible Individuals who will be
granted Options under the Plan, the Committee may consider such individuals'
responsibilities, service, present and future value to the Corporation or any
Subsidiary and other factors it considers relevant.

         2.2 TERMS AND CONDITIONS OF OPTIONS. Except as otherwise provided in a

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Participant's employment or other agreement with the Corporation or any
Subsidiary or in an Award Agreement, each Option shall be subject to the
following express terms and conditions and to such other terms and conditions as
the Committee may deem appropriate as set forth in the Award Agreement or the
Participant's employment or other agreement with the Corporation or any
Subsidiary:

         (a) OPTION TERM. Each Option shall expire on the tenth (10th)
anniversary of the Grant Date (or in the case of an Incentive Stock Option
granted to a 10% Owner, on the fifth (5th) anniversary of the Grant Date) or
such earlier period specified in the Participant's Award Agreement or employment
or other agreement with the Corporation or any Subsidiary. The Committee may
extend such Option Term; PROVIDED, HOWEVER, that (i) such extension shall not in
any way disqualify the Option as an Incentive Stock Option and (ii) the Option
Term, including any such extensions, shall not exceed ten (10) years.

         (b) OPTION PRICE. The Option Price per Share shall be determined by the
Committee no later than the Grant Date of any Option; PROVIDED, HOWEVER, (i) in
the case of an Incentive Stock Option, the Option Price shall not be less than
the Fair Market Value of a Share on the Grant Date, and (ii) in the case of an
Incentive Stock Option granted to a 10% Owner, the Option Price shall not be
less than one hundred ten percent (110%) of the Fair Market Value of a Share on
the Grant Date, (but in no event less than the par value of a Share).

         (c) EXERCISE OF OPTION. The exercisability of an Option shall be
determined by the Committee. Subject to acceleration or early expiration as
provided elsewhere in the Plan or in a Participant's employment or other
agreement with the Corporation or any Subsidiary, the vesting of any Option
granted under the Plan shall be subject to the Participant remaining in

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the employ of or maintaining a consultancy with the Corporation or any of its
Subsidiaries and shall vest (i) in five (5) equal installments of twenty percent
(20%) of the amount granted, with the first installment vesting on the December
31st next following the Grant Date and each other installment vesting on each of
the next four December 31st thereafter or (ii) in such other amounts over such
period of time after the Grant Date as the Committee may designate.

         (d) DISQUALIFYING DISPOSITION. The Award Agreement shall require any
Participant who is granted an Incentive Stock Option to notify the Corporation
of any disposition of such Shares issued upon the exercise of such Incentive
Stock Option under the circumstances described in Section 421(b) of the Code
(relating to certain disqualifying dispositions) (a "Disqualifying Disposition",
within ten (10) business days after such Disqualifying Disposition.

         (e) PAYMENT OF PURCHASE PRICE UPON EXERCISE. The purchase price as to
which an Option shall be exercised shall be paid to the Corporation at the time
of exercise either (i) in cash, certified check or wire transfer, (ii) in such
other consideration as the Committee deems appropriate, including, but not
limited to, loans from the Corporation or a third party, (iii) subject to the
approval of the Committee, in Mature Shares already owned by the Participant
having a total fair market value, as determined by the Committee, equal to the
purchase price, or a combination of cash and Mature Shares having a total fair
market value, as so determined, equal to the purchase price, (iv) subject to the
approval of the Committee, in its sole discretion, by delivering a properly
executed exercise notice in a form approved by the Committee, together with an
irrevocable notice of exercise and irrevocable instructions to a broker to
promptly deliver to the Corporation the amount of applicable sale or loan
proceeds sufficient to pay the purchase price for such Shares, together with the
amount of federal, state

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<PAGE>

and local withholding taxes payable by Participant by reason of such exercise,
or (v) a combination of the foregoing.

         (f) EXERCISE IN THE EVENT OF TERMINATION OR CHANGE IN CONTROL. Unless
otherwise provided in a Participant's employment or other agreement with the
Corporation or any Subsidiary or Award Agreement, the following provisions shall
apply upon termination of a Participant's employment or consultancy with the
Corporation or any Subsidiary:

                  (i)      UPON TERMINATION FOR ANY REASON OTHER THAN DUE TO
                           DEATH. If a Participant's employment or consultancy
                           with the Corporation or any Subsidiary shall
                           terminate for any reason other than by reason of his
                           or her death, such Participant may exercise his or
                           her Options, to the extent that such Participant
                           shall have been entitled to do so on the date of such
                           termination, at any time, or from time to time, but
                           not later than (x) the expiration date specified in
                           Subsection 2.2(a) hereof or (y) three (3) months
                           after the date of such termination, whichever date is
                           earlier and any portion of any Option granted
                           hereunder that is not vested and exercisable as of
                           the date of the Participant's termination of
                           employment shall automatically expire and be
                           forfeited as of such date of termination.

                  (ii)     UPON TERMINATION DUE TO DEATH. In the event a
                           Participant's employment or consultancy shall
                           terminate by reason of his or her death, such
                           Participant's Beneficiary, heirs or estate may
                           exercise his or her Options, to the extent that such
                           Participant, if such Participant had not died, would
                           have been entitled to do so within the calendar year
                           following such Participant's death, at any time, or
                           from time to time, but not later than (x) the
                           expiration date specified in Subsection 2.2(a) hereof
                           or (y) one year after the date of death, whichever is
                           earlier and any portion of any Option granted
                           hereunder that would not have vested and been
                           exercisable within the calendar year following such
                           Participant's death if such Participant had not died
                           shall automatically expire and be forfeited as of the
                           date of such Participant's death.

                  (iii)    UPON A CHANGE IN CONTROL. In the event a
                           Participant's employment or consultancy shall
                           terminate within six (6) months following a Change in
                           Control, all Options granted under the Plan which the
                           Participant shall not then have been entitled to
                           exercise shall be accelerated as of the date of such
                           termination and the Participant may exercise all such
                           Options at any time, or from time to time, but not
                           later than (x) the expiration date specified in
                           Subsection 2.2(a) hereof or (y) three (3) months
                           after such termination, whichever is earlier.

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<PAGE>

         (g) TRANSFERABILITY OF INCENTIVE STOCK OPTIONS. No Incentive Stock
Option granted under the Plan shall be transferable other than by will or by the
laws of descent and distribution and during the lifetime of the Participant,
shall be exercisable only by the Participant or his or her guardian or legal
representative.

         (h) INVESTMENT REPRESENTATION. Each Award Agreement for an Option shall
provide that, upon demand by the Committee for such a representation, the
Participant (or any person acting under Subsection 2.2(e) hereof) shall deliver
to the Committee, at the time of any exercise of an Option or portion thereof, a
written representation that the Shares to be acquired upon such exercise are to
be acquired for investment and not for resale or with a view to the distribution
thereof. Upon such demand, delivery of such representation prior to the delivery
of any Common Stock issued upon exercise of an Option and prior to the
expiration of the Option Term shall be a condition precedent to the right of the
Participant or such other person to purchase any Common Stock. In the event
certificates for Common Stock are delivered under the Plan with respect to which
such an investment representation has been obtained, the Committee may cause a
legend or legends to be placed on such certificates to make appropriate
reference to such representations and to restrict transfer in the absence of
compliance with applicable federal or state securities laws.

         (i) PARTICIPANTS TO HAVE NO RIGHTS AS SHAREHOLDERS. No Participant
shall have any rights as a shareholder with respect to any Common Stock subject
to his or her Option prior to the date of issuance to him or her of such Common
Stock.

         (j) OTHER OPTION PROVISIONS. The Committee may require a Participant to
agree, as a condition to receiving an Option under the Plan, that part or all of
any Options previously granted to such Participant under the Plan or any prior
plan of the Corporation be

                                       16
<PAGE>

terminated.

         2.3 EXERCISE OF OPTIONS. An Option shall be exercised by the delivery
to the Corporation during the Option Term of (x) written notice of intent to
purchase a specific number of Shares subject to the Option and (y) payment in
full of the Option Price of such specific number of Shares.

         SECTION 3.  STOCK APPRECIATION RIGHTS.

         3.1 AWARD OF STOCK APPRECIATION RIGHTS. Subject to the provisions of
the Plan, the Committee shall determine and designate from time to time those
Eligible Individuals to whom SARs shall be granted and the number of Shares to
be granted to each such Eligible Individual. When granted SARS may, but need
not, be identified with a specific Option (including any Option granted on or
before the Grant Date of the SARs) in a number equal to or different from the
number of SARs so granted. If SARs are identified with Shares subject to an
Option, then, unless otherwise provided in the applicable Award Agreement, the
Participant's associated SARs shall terminate upon (x) the expiration,
termination, forfeiture or cancellation of such Option, or (y) the exercise of
such Option.

         3.2 STRIKE PRICE. The strike price ("Strike Price") of any SAR shall
equal, for any SAR that is identified with an Option, the Option Price of such
Option, or for any other SAR, 100% of the Fair Market Value of a Share on the
Grant Date of such SAR; except that the Committee may (x) specify a higher
Strike Price in the Award Agreement or (y) provide that the benefit payable upon
exercise of any SAR shall not exceed a percentage of Fair Market Value of a
Share on such Grant Date as the Committee shall specify.

         3.3 VESTING OF SARS. Unless otherwise specified in the applicable Award
Agreement or in the Participant's employment or other agreement with the
Corporation or

                                       17
<PAGE>

any Subsidiary, (x) each SAR not identified with any other Award shall become
exercisable with respect to 20% of the Shares subject thereto on each of the
first five December 31st following the Grant Date of such SAR or in such other
amounts and over such other time period as may be determined by the Committee
and (y) each SAR which is identified with any other Award shall become
exercisable as and to the extent that the Option with which such SAR is
identified may be exercised.

         3.4 EXERCISE OF SARS. SARs shall be exercised by delivery to the
Corporation of written notice of intent to exercise a specific number of SARs.
Unless otherwise provided in the applicable Award Agreement or a Participant's
employment or other agreement with the Corporation or any Subsidiary, the
exercise of SARs which are identified with Shares subject to an Option shall
result in the cancellation or forfeiture of such Option, to the extent of such
exercise and any such Shares so canceled or forfeited shall not thereafter again
become available for grant under the Plan. The benefit for each SAR shall be
equal to (x) the Fair Market Value of the Share on the date of such exercise,
minus (y) the Strike Price of such SAR. Such benefit shall be payable in cash
(subject to applicable withholding), except that the Committee may provide in
the applicable Award Agreement that benefits may be paid wholly or partly in
Shares.

         3.5 NO RIGHTS AS SHAREHOLDERS. No Participant shall have any rights as
a shareholder with respect to any Common Stock subject to his or her SAR.

         3.6 EXERCISE IN THE EVENT OF TERMINATION OR CHANGE IN CONTROL. Unless
otherwise provided in a Participant's employment or other agreement with the
Corporation or any Subsidiary or Award Agreement, the following provisions shall
apply upon termination of a Participant's employment or consultancy with the
Corporation or any

                                       18
<PAGE>

Subsidiary:

                  (i)      UPON TERMINATION FOR ANY REASON OTHER THAN DUE TO
                           DEATH. If a Participant's employment or consultancy
                           with the Corporation or any Subsidiary shall
                           terminate for any reason other than by reason of his
                           or her death, such Participant may exercise his or
                           her SARs, to the extent that such Participant shall
                           have been entitled to do so on the date of such
                           termination, at any time, or from time to time, but
                           not later than (x) the expiration date specified in
                           Subsection 2.2(a) hereof or (y) three (3) months
                           after the date of such termination, whichever date is
                           earlier and any SARs granted hereunder that are not
                           vested and exercisable as of the date of the
                           Participant's termination of employment shall
                           automatically expire and be forfeited as of such date
                           of termination.

                  (ii)     UPON TERMINATION DUE TO DEATH. In the event a
                           Participant's employment or consultancy shall
                           terminate by reason of his or her death, such
                           Participant's Beneficiary, heirs or estate may
                           exercise his or her SARs, to the extent that such
                           Participant, if such Participant had not died, would
                           have been entitled to do so within the calendar year
                           following such Participant's death, at any time, or
                           from time to time, but not later than (x) the
                           expiration date specified in Subsection 2.2(a) hereof
                           or (y) one year after the date of death, whichever is
                           earlier and any SARs granted hereunder that would not
                           have vested and been exercisable within the calendar
                           year following such Participant's death if such
                           Participant had not died shall automatically expire
                           and be forfeited as of the date of such Participant's
                           death.

                  (iii)    UPON A CHANGE IN CONTROL. In the event a
                           Participant's employment or consultancy shall
                           terminate within six (6) months following a Change in
                           Control, all SARs granted under the Plan which the
                           Participant shall not then have been entitled to
                           exercise shall be accelerated as of the date of such
                           termination and the Participant may exercise all such
                           SARs at any time, or from time to time, but not later
                           than (x) the expiration date specified in Subsection
                           2.2(a) hereof or (y) three (3) months after such
                           termination, whichever is earlier.

         SECTION 4.  RESTRICTED STOCK.

         4.1 AWARDS OF RESTRICTED STOCK. Restricted Stock awarded under this
Plan shall be subject to certain Restrictions as provided below. All
Restrictions imposed on any such Award of Restricted Stock shall be made by and
at the discretion of the Committee, subject to the provisions of the Plan, and
are binding on the Corporation and the Participants, their

                                       19
<PAGE>

Beneficiaries and legal representatives.

         4.2 RESTRICTED PERIOD/RESTRICTIONS. At the time each Award of
Restricted Stock is granted, the Committee (i) shall establish a Restricted
Period within which Restricted Stock awarded to the Participants may not be
sold, assigned, transferred, made subject to gift, or otherwise disposed of,
mortgaged, pledged or otherwise encumbered, if any and (ii) may impose such
other Restrictions on any Restricted Stock as it may deem advisable.

         4.3 RIGHTS AS STOCKHOLDERS. Except for the conditions outlined in
Section 4.2 hereof, and the forfeiture conditions described in Section 4.5
hereof, each Participant shall have all rights of a holder of Common Stock,
including the right to receive all dividends or other distributions made or paid
in respect of such Shares and the right to vote such Shares at regular or
special meetings of the shareholders of the Corporation.

         4.4 DELIVERY OF SHARES. The certificates for any Restricted Stock
awarded to an Eligible Individual under the Plan shall be held (together with a
stock power executed in blank by the Eligible Individual) in escrow by the
Secretary of the Corporation under the Participant's name in an account
maintained by the Corporation until such Shares of Restricted Stock become
nonforfeitable or are forfeited. At the conclusion of the Restricted Period or
the expiration or attainment of such other Restrictions imposed on any
Restricted Stock granted to a Participant, or upon the prior approval of the
Committee as described in Section 4.5 hereof, and subject to the satisfaction of
the Corporation's withholding obligations described in Section 5.8 hereof,
certificates representing such Shares of Restricted Stock shall be delivered to
the Participant, or the Beneficiary or legal representative of the Participant,
free of the Restrictions set forth in the Award Agreement pursuant to Section
4.2 hereof.

         4.5      TERMINATION OF A PARTICIPANT'S EMPLOYMENT OR CONSULTANCY.

                                       20
<PAGE>

         Unless otherwise provided in the Award Agreement or in the
Participant's employment or other agreement with the Corporation or any
Subsidiary, the following provisions shall apply upon termination of a
Participant's employment or consultancy with the Corporation or any Subsidiary:

                  (i)      UPON TERMINATION FOR ANY REASON OTHER THAN DUE TO
                           DEATH. If a Participant's employment or consultancy
                           with the Corporation or any Subsidiary is terminated,
                           except termination due to death, all Restricted Stock
                           awarded under the Plan which are then subject to a
                           Restricted Period or other Restrictions will be
                           forfeited and become the property of the Corporation
                           on the date of such termination. However, the
                           Committee may, if it, in its sole discretion,
                           determines that the circumstances warrant such
                           action, approve the release of all or any part of the
                           Restricted Stock which would otherwise be forfeited
                           pursuant to this Section, upon such conditions as it
                           shall determine.

                  (ii)     UPON DUE TO DEATH. If a Participant's employment or
                           consultancy with the Corporation or a Subsidiary is
                           terminated due to death, all Shares of Restricted
                           Stock awarded under the Plan which are then subject
                           to a Restricted Period or other Restrictions and
                           which would have been released, if the Participant
                           had not died, within the calendar year following the
                           Participant's death shall be released on the date of
                           such termination as if with respect to such Shares
                           the Restricted Period had ended and the other
                           Restrictions had lapsed and certificates representing
                           such Shares of Restricted Stock shall be delivered to
                           the Participant's Beneficiary or legal representative
                           free from such Restrictions as soon as practicable
                           following such termination and all other Shares of
                           Restricted Stock which would not have been released,
                           if the Participant had not died, within the calendar
                           year following the Participant's death will be
                           forfeited and become the property of the Corporation
                           on the date of such termination.

         4.6 SECTION 83(B) ELECTIONS. A Participant who files an election
permitted under Section 83(b) of the Code with the Internal Revenue Service to
include the fair market value of any Restricted Stock in gross income while they
are still subject to a Restricted Period or other Restrictions shall notify the
Corporation of such election within ten (10) days of making such election and
promptly furnish the Corporation with a copy of such election together with the
amount of any federal, state, local or other taxes required to be withheld to
enable

                                       21
<PAGE>

the Corporation to claim an income tax deduction with respect to such election.

         4.7 CHANGE IN CONTROL. In the event of a Change in Control, all
Restricted Periods shall end, the Restricted Period or other Restrictions
applicable to all previously granted Awards of Restricted Stock shall end or
lapse, as the case may be, and such Shares shall be released and certificates
representing such Shares of Restricted Stock shall be delivered to the
Participants free from such Restrictions as soon as practicable following such
Change in Control.

         SECTION 5.  GENERAL PROVISIONS

         5.1 GENERAL CREDITOR STATUS. Participants shall have no right, title,
or interest whatsoever in or to any investments which the Corporation may make
to aid it in meeting its obligations under the Plan. Nothing contained in the
Plan, and no action taken pursuant to its provisions, shall create or be
construed to create a trust of any kind, or a fiduciary relationship between the
Corporation and any Participant, Beneficiary, legal representative or any other
person. To the extent that any person acquires a right to receive payments from
the Corporation under the Plan, such right shall be no greater than the right of
an unsecured general creditor of the Corporation. All payments to be made
hereunder shall be paid from the general funds of the Corporation and no special
or separate fund shall be established and no segregation of assets shall be made
to assure payment of such amounts except as expressly set forth in the Plan;
PROVIDED, HOWEVER, that in its sole discretion, the Committee may authorize the
creation of trusts or other arrangements to meet the obligations created under
the Plan to deliver Common Stock or pay cash; PROVIDED, FURTHER, HOWEVER, that,
unless the Committee otherwise determines with the consent of the affected
Participant, the existence of such trusts or other arrangements shall be
consistent with the "unfunded" status of the Plan.

         5.2 CERTAIN ADJUSTMENTS TO SHARES. In the event of any change in the
Common Stock by reason of any stock dividend, recapitalization, reorganization,
spin-off, split-off, merger, consolidation, stock split, reverse stock split,
combination or exchange of shares, or any rights offering to purchase Common
Stock at a price substantially below fair market value, or of any similar change
affecting the Common Stock of or by the Corporation, the number and kind of
Shares available for Awards under the Plan and the number and kind of Shares
subject to a Restricted Period or other Restrictions or subject to Options in
outstanding Awards and the Option Price or purchase price per Share thereof
shall be appropriately adjusted consistent with such change in such manner as
the Committee may deem equitable to prevent substantial dilution or enlargement
of the rights granted to, or available for, the Participants hereunder. Any
adjustment of an Incentive Stock Option pursuant to this Section shall be made
only to the extent not constituting a "modification" within the meaning of
Section 424(h)(3) of the Code, unless the holder of such Option shall agree
otherwise. The Committee shall give notice to each Participant of any adjustment
made pursuant to this Section and, upon notice, such adjustment shall be
effective and binding for all purposes of the Plan.

         5.3 SUCCESSOR CORPORATION. The obligations of the Corporation under the
Plan shall be binding upon any successor corporation or organization resulting
from the merger, consolidation or other reorganization of the Corporation, or
upon any successor corporation or organization succeeding to substantially all
of the assets and business of the Corporation. The Corporation agrees that it
will make appropriate provision for the preservation of Participants' rights
under the Plan in any agreement or plan which it may enter into or adopt to
effect any such merger, consolidation, reorganization or transfer of assets.

                                       22
<PAGE>

         5.4 NO CLAIM OR RIGHT UNDER THE PLAN. Neither the Plan nor any action
taken thereunder shall be construed as giving any employee, consultant or
advisor any right to be retained in the employ of or by the Corporation.

         5.5 AWARDS NOT TREATED AS COMPENSATION UNDER BENEFIT PLANS. No Award
shall be considered as compensation under any employee benefit plan of the
Corporation, except as specifically provided in any such plan or as otherwise
determined by the Board.

         5.6 LISTING AND QUALIFICATION OF COMMON STOCK. The Corporation, in its
discretion, may postpone the issuance or delivery of Common Stock upon any
exercise of an Option or pursuant to an Award of Restricted Stock until
completion of such stock exchange listing or other qualification of such shares
under any state or federal law, rule or regulation as the Corporation may
consider appropriate, and may require any Participant, Beneficiary or legal
representative to make such representations and furnish such information as it
may consider appropriate in connection with the issuance or delivery of the
shares in compliance with applicable laws, rules and regulations.

         5.7 WITHHOLDING TAXES. The Corporation may make such provisions and
take such steps as it may deem necessary or appropriate for the withholding of
all federal, state and local taxes required by law to be withheld with respect
to Awards granted pursuant to the Plan including, but not limited to (i)
accepting a remittance from the Participant in cash, or in the Committee's
discretion in Mature Shares (ii) deducting the amount required to be withheld
from any other amount then or thereafter payable by the Corporation or
Subsidiary to a Participant, Beneficiary or legal representative or from any
Shares due to the Participant under the Plan, (iii) requiring a Participant,
Beneficiary or legal representative to pay to the Corporation the amount
required to be withheld as a condition of releasing Common Stock

                                       23
<PAGE>

or (iv) any combination of the foregoing. In addition, subject to such rules and
regulations as the Committee shall from time to time establish, Participants
shall be permitted to satisfy federal, state and local taxes, if any, imposed
upon the payment of Awards in Common Stock at a rate up to such Participant's
maximum marginal tax rate with respect to each such tax by (i) irrevocably
electing to have the Corporation deduct from the number of Shares otherwise
deliverable in payment of an Award such number of Shares as shall have a value
equal to the amount of tax to be withheld, (ii) delivering to the Corporation
such portion of the Common Stock delivered in payment of the Award as shall have
a value equal to the amount of tax to be withheld, or (iii) delivering to the
Corporation such number of Mature Shares or combination of Mature Shares and
cash as shall have a value equal to the amount of tax to be withheld.

         5.8      NON-TRANSFERABILITY/DESIGNATION AND CHANGE OF BENEFICIARY.

         (a) An Award granted hereunder shall not be assignable or transferable
other than by will or by the laws of descent and distribution and may be
exercised during the Participant's lifetime only by the Participant or his or
her guardian or legal representative, except that, subject to Section 2.2(f)
hereof, in respect of Incentive Stock Options, a Participant may, if permitted
by the Committee, in its discretion, transfer an Award, or any portion thereof,
to one or more members of the Participant's Immediate Family.

         (b) Each Participant shall file with the Committee a written
designation of one or more persons as the Beneficiary who shall be entitled to
receive the amount, if any, payable under the Plan upon his or her death. A
Participant may, from time to time, revoke or change his or her Beneficiary
designation without the consent of any prior Beneficiary by filing a new
designation with the Committee. The last such designation received by the
Committee shall be controlling; PROVIDED, HOWEVER, that no designation, or
change or

                                       24
<PAGE>

revocation thereof, shall be effective unless received by the Committee prior to
the Participant's death, and in no event shall it be effective as of a date
prior to such receipt.

         5.9 PAYMENTS TO PERSONS OTHER THAN A PARTICIPANT. If the Committee
shall find that any person to whom any amount is payable under the Plan is
unable to care for his or her affairs because of illness or accident, or is a
minor, or has died, then any payment due to such person or his or her estate
(unless a prior claim therefor has been made by a duly appointed legal
representative), may, if the Committee so directs the Corporation, be paid to
his or her spouse, a child, a relative, an institution maintaining or having
custody of such person, or any other person deemed by the Committee to be a
proper recipient on behalf of such person otherwise entitled to payment. Any
such payment shall be a complete discharge of the liability of the Committee and
the Corporation therefor.

         5.10 NO LIABILITY OF COMMITTEE MEMBERS. No member of the Committee
shall be personally liable by reason of any contract or other instrument
executed by such member or on his or her behalf in his or her capacity as a
member of the Committee nor for any mistake of judgment made in good faith, and
the Corporation shall indemnify and hold harmless each employee, officer or
director of the Corporation to whom any duty or power relating to the
administration or interpretation of the Plan may be allocated or delegated,
against any cost or expense (including counsel fees) or liability (including any
sum paid in settlement of a claim with the approval of the Board) arising out of
any act or omission to act in connection with the Plan unless arising out of
such person's own fraud or bad faith. The indemnification provided for in this
Section 5.10 shall be in addition to any rights of indemnification such
Committee member has as a director or officer pursuant to law, under the
Certificate of Incorporation or By-Laws of the Corporation.

                                       25
<PAGE>

         5.11 AMENDMENT OR TERMINATION. Except as to matters that in the opinion
of the Corporation's legal counsel require stockholder approval, any provision
of the Plan may be modified as to a Participant by an individual agreement
approved by the Committee. The Board may, with prospective or retroactive
effect, amend, suspend or terminate the Plan or any portion thereof at any time;
PROVIDED, HOWEVER, that (i) no amendment that would materially increase the cost
of the Plan to the Corporation may be made by the Board without the approval of
the stockholders of the Corporation and (ii) no amendment, suspension or
termination of the Plan shall deprive any Participant of any rights to Awards
previously made under the Plan without his or her written consent. Subject to
earlier termination pursuant to the provisions of this Section, and unless the
stockholders of the Corporation shall have approved an extension of the Plan
beyond such date, the Plan shall terminate and no further Awards shall be made
under the Plan after the tenth (10th) anniversary of the original effective date
of the Plan specified in Section 5.15 hereof.

         5.12 UNFUNDED PLAN. The Plan is intended to constitute an unfunded
deferred compensation arrangement.

         5.13 GOVERNING LAW. The Plan shall be governed by and construed in
accordance with the laws of the State of Maryland, without reference to the
principles of conflicts of law thereof.

         5.14 NON-UNIFORM DETERMINATIONS. The Committee's determinations under
the Plan need not be uniform and may be made by the Committee selectively among
persons who receive, or are eligible to receive, Awards whether or not such
persons are similarly situated. Without limiting the generality of the
foregoing, the Committee shall be entitled, to enter into non-uniform and
selective Award Agreements as to (a) the identity of the Participant, (b)

                                       26
<PAGE>

the terms and provisions of Awards, and (c) the treatment of termination of
employment or consultancies.

         5.15 EFFECTIVE DATE. The 1994 Employee Stock Option Plan was originally
effective as of August 31, 1994 and was subsequently amended and restated in its
entirety effective December 1, 1998.

         5.16 NO ILLEGAL TRANSACTIONS. The Plan and all Awards granted pursuant
to it are subject to all applicable laws and regulations. Notwithstanding any
provision of the Plan or any Award, Participants shall not be entitled to
exercise or receive benefits under, any Award, and the Corporation shall not be
obligated to deliver any Shares or deliver any benefits to a Participant, if
such exercise or delivery would constitute a violation by the Participant or the
Corporation of any applicable law or regulation.

         5.17 SEVERABILITY. If any part of the Plan is declared by any court of
governmental authority to be unlawful or invalid, such unlawfulness or
invalidity shall not invalidate any other part of the Plan. Any Section or part
of a Section so declared to be unlawful or invalid shall, if possible, be
construed in manner which will give effect to the terms of such Section to the
fullest extent possible while remaining lawful and valid.

                                       27

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