Document:

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                                                                     Exhibit 4.8

                            CENTURY ALUMINUM COMPANY

    THIS CERTIFIES THAT          GLENCORE AG               is the
                       -----------------------------------

registered holder of  FIVE HUNDRED THOUSAND fully paid and nonassessable  Shares
                    -----------------------------------------------------

   of 8% Cumulative Convertible Preferred Stock, par value $.01 per share, of
                            Century Aluminum Company

transferable only on the books of the Corporation by the holder hereof in person
      or by Attorney upon surrender of this Certificate properly endorsed.

   IN WITNESS WHEREOF, the said Corporation has caused this Certificate to be
      signed by its duly authorized officers and its Corporate Seal to be
      hereunto affixed this    second    day of     April        A.D. 2001
                            -------------       ------------------

   /s/ Daniel J. Krofcheck                          /s/ Gerald J. Kitchen
 ---------------------------                       -------------------------
        Treasurer                                   Executive Vice President

                                     [SEAL]

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For Value Received,        hereby sell, assign and transfer
unto                                                 Shares
represented by the within Certificate, and do hereby irrevocably constitute
and appoint

                                                                    Attorney
to transfer the said Shares on the books of the within named Corporation with
full power of substitution in the premises.

     Dated                           19

               In presence of

   NOTICE: THE SIGNATURE OF THIS ASSIGNMENT MUST CORRESPOND WITH THE NAME AS
     WRITTEN UPON THE FACE OF THE CERTIFICATE, IN EVERY PARTICULAR, WITHOUT
               ALTERATION OR ENLARGEMENT OR ANY CHANGE WHATEVER.

THE POWERS, DESIGNATIONS, PREFERENCES AND SPECIAL RIGHTS OF THE SHARES
REPRESENTED HEREBY ARE AS SET FORTH IN THE CERTIFICATE OF DESIGNATION,
PREFERENCES AND RIGHTS, A COPY OF WHICH MAY BE OBTAINED, WITHOUT CHARGE,
FROM THE CORPORATION.<PAGE>   1
                                                                   EXHIBIT 10.1

                             MIDDLEFIELD BANC CORP.
                             1999 Stock Option Plan

         1. Plan Purpose. The purpose of the Plan is to promote the long-term
interests of the Corporation and its shareholders by providing a means for
attracting and retaining directors, officers and employees of the Corporation
and its Affiliates. It is intended that designated Options granted pursuant to
the provisions of this Plan to persons employed by the Corporation or its
Affiliates will qualify as Incentive Stock Options. Options granted to persons
who are not employees will be Non-Qualified Stock Options.

         2. Definitions. The following definitions are applicable to the Plan:

         "Affiliate" - means any "parent corporation" or "subsidiary
corporation" of the Corporation, as such terms are defined in Section 424(e) and
(f), respectively, of the Code.

         "Award" - means the grant of an Incentive Stock Option, a Non-Qualified
Stock Option, a Stock Appreciation Right, Restricted Stock or other property or
securities, or any combination thereof, as provided in the Plan.

         "Award Agreement" - means the agreement evidencing the grant of an
Award made under the Plan.

         "Bank" - means The Middlefield Banking Co., and any successor entity.

         "Cause" or "cause" - means, in connection with termination or cessation
of service as a director, officer or employee of the Corporation or an
Affiliate, personal dishonesty, incompetence, willful misconduct, breach of
fiduciary duty involving personal profit, intentional failure to perform stated
duties or gross negligence.

         "Code" - means the Internal Revenue Code of 1986, as amended.

         "Committee" - means the Committee referred to in Section 3 hereof.

         "Continuous Service" - means the absence of any interruption or
termination of service as a director, officer or employee of the Corporation or
an Affiliate, except that when used with respect to persons granted an Incentive
Option "Continuous Service" means the absence of any interruption or termination
of service as an employee of the Corporation or an Affiliate. Service shall not
be considered interrupted in the case of sick leave, military leave or any other
leave of absence approved by the Corporation or in the case of transfers between
payroll locations of the Corporation or between the Corporation, its parent, its
subsidiaries or its successor.

         "Corporation" - means Middlefield Banc Corp., an Ohio corporation.

         "Employee" - means any person, including an officer or director, who is
employed by the Corporation or any Affiliate.

         "ERISA" - means the Employee Retirement Income Security Act of 1974, as
amended.

         "Exercise Price" - means (i) in the case of an Option, the price per
Share at which the Shares subject to such Option may be purchased upon exercise
of such Option and (ii) in the case of a Right, the price per Share which, upon
grant, the Committee determines shall be used to calculate the aggregate value a
Participant shall be entitled to receive pursuant to Sections 9 or 12 hereof
upon exercise of such Right.

         "Incentive Stock Option" - means an option to purchase Shares granted
by the Committee pursuant to Section 6 hereof which is subject to the
limitations and restrictions of Section 8 hereof and is intended to qualify
under Section 422 of the Code. Unless otherwise set forth in the Award
Agreement, any Option that does not qualify as an Incentive Stock Option for any
reason shall be deemed a Non-Qualified Stock Option.

         "Market Value" - means the average of the high and low quoted sales
prices on the date in question (or, if there is no reported sale on such date,
on the last preceding date on which any reported sale occurred) of a Share on
the Composite Tape for the New York Stock Exchange-Listed Stocks, or, if on such
date the Shares are not quoted on the Composite Tape, on the New York Stock
Exchange, or, if the Shares are not listed or admitted to trading on such
Exchange, on the principal United States securities exchange registered under
the Securities Exchange Act of 1934 on which the Shares are listed or admitted
to trading, or, if the Shares are not listed or admitted to trading on any such
exchange, the mean between the closing high bid and low asked quotations with
respect to a Share on such date on the National Association of Securities
Dealers, Inc. Automated Quotations System or bulletin board, or any

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similar system then in use, or, if no such quotations are available, the fair
market value on such date of a Share as the Board of Directors shall determine.

         "Non-Employee Director" - means a director who (a) is an outside
director, as defined in Section 162(m) of the Code, and (b) is a Non-Employee
Director, as defined in Rule 16b-3(b)(3) of the Securities and Exchange
Commission or any successor rule thereto.

         "Non-Qualified Stock Option" - means an option to purchase Shares
granted by the Committee pursuant to Section 6 hereof which does not qualify,
for any reason, as an Incentive Stock Option under Section 422(b) of the Code.

         "Option" - means an Incentive Stock Option or a Non-Qualified Stock
Option.

         "Participant" - means any director, officer or employee of the
Corporation or any Affiliate who is selected by the Committee to receive an
Award and any director of the Corporation who is granted an Award pursuant to
Section 19 hereof.

         "Plan" - means the 1999 Stock Option Plan of the Corporation.

         "Related" - means (i) in the case of a Right, a Right which is granted
in connection with, and to the extent exercisable, in whole or in part, in lieu
of, an Option or another Right and (ii) in the case of an Option, an Option
which is granted in connection with, and to the extent exercisable, in whole or
in part, in lieu of, a Right or another Option.

         "Restricted Stock" - means Shares awarded to a Participant by the
Committee pursuant to Section 10(a) hereof.

         "Right" - means a Stock Appreciation Right.

         "Shares" - means the shares of Common Stock of the Corporation, without
par value.

         "Stock Appreciation Right" - means a stock appreciation right with
respect to Shares granted by the Committee pursuant to the Plan.

         3. Administration. The Plan shall be administered by a Committee
consisting of two or more members, each of whom shall be a Non-Employee
Director. The members of the Committee shall be appointed by the Board of
Directors of the Corporation. Except as limited by the express provisions of the
Plan or by resolutions adopted by the Board of Directors of the Corporation, the
Committee shall have sole and complete authority and discretion to (i) select
Participants and grant Awards; (ii) determine the number of Shares to be subject
to types of Awards generally, as well as to individual Awards granted under the
Plan; (iii) determine the terms and conditions upon which Awards shall be
granted under the Plan; (iv) prescribe the form and terms of instruments
evidencing such grants; and (v) establish from time to time regulations for the
administration of the Plan, interpret the Plan, and make all determinations
deemed necessary or advisable for the administration of the Plan.

         Without in any way limiting the authority of the Committee under the
terms of the Plan, the Committee may provide in any Award Agreement that the
recipient of the Award shall maintain in confidence the amount and terms of his
or her award, except as disclosure thereof may be required under applicable law.
An Award shall be subject to forfeiture at the Committee's discretion for
violation of the confidentiality provisions of an Award Agreement, except
insofar as such Award relates to Options or Rights that have been exercised or
Shares that have become vested by lapse of any applicable restrictions.

         A majority of the Committee shall constitute a quorum, and the acts of
a majority of the members present at any meeting at which a quorum is present,
or acts approved in writing by a majority of the Committee without a meeting,
shall be acts of the Committee.

         4. Eligibility. The Committee may select from time to time Participants
in the Plan from those directors, officers and employees of the Corporation or
its Affiliates who, in the opinion of the Committee, are responsible for or
contribute to the management, growth and profitability of the Corporation and
its Affiliates. Subject to adjustment as set forth in Section 11, the maximum
number of Shares with respect to which an Option or Options may be granted in
any one taxable year of the Corporation is 5,743.

         5. Shares Subject to Plan. Subject to adjustment by the operation of
Section 11 hereof, the maximum number of Shares with respect to which Awards may
be made under the Plan is 57,433, plus any Shares surrendered to the Corporation
in payment of the exercise price of Options or Rights issued under the Plan. The
Shares with

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respect to which Awards may be made under the Plan may be authorized and
unissued shares or issued shares heretofore or hereafter reacquired and held as
treasury shares. Shares that are subject to Related Rights and Related Options
shall be counted only once in determining whether the maximum number of Shares
with respect to which Awards may be granted under the Plan has been exceeded. An
Award shall not be considered to have been made under the Plan with respect to
any Option or Right that terminates. New Awards may be granted under the Plan
with respect to the number of Shares as to which such termination has occurred.

         6. General Terms and Conditions of Options and Rights. The Committee
shall have full and complete authority and discretion, except as expressly
limited by the Plan, to grant Options and/or Rights and to provide the terms and
conditions (which need not be identical among Participants) thereof. In
particular, the Committee shall prescribe the following terms and conditions:
(i) the Exercise Price of any Option or Right, which shall not be less than the
Market Value per Share at the date of grant of such Option or Right, (ii) the
number of Shares subject to, and the expiration date of, any Option or Right,
which expiration date shall not exceed ten years from the date of grant, (iii)
the manner, time and rate (cumulative or otherwise) of exercise of such Option
or Right, and (iv) the restrictions, if any, to be placed upon such Option or
Right or upon Shares which may be issued upon exercise of such Option or Right.
Notwithstanding the foregoing, no individual shall be granted Awards with
respect to more than 20% of the total shares subject to the Plan. All directors
who are neither officers or employees of the Corporation, in the aggregate, may
not be granted Awards with respect to more than 20% of the total Shares subject
to the Plan. No Awards shall vest and become exercisable earlier than one year
from the date the Plan is approved by shareholders of the Corporation.

         Furthermore, at the time of any Award, the Participant shall enter into
an agreement with the Corporation in a form specified by the Committee, agreeing
to the terms and conditions of the Award and such other matters as the
Committee, in its sole discretion, shall determine (the "Option Agreement").

         7. Exercise of Options or Rights.

         (a) Except as provided herein, an Option or Right granted under the
Plan shall be exercisable during the lifetime of the Participant to whom such
Option or Right was granted only by such Participant and, except as provided in
paragraphs (c) and (d) of this Section 7, no such Option or Right may be
exercised unless at the time such Participant exercises such Option or Right,
such Participant has maintained Continuous Service since the date of grant of
such Option or Right.

         (b) To exercise an Option or Right under the Plan, the Participant to
whom such Option or Right was granted shall give written notice to the
Corporation in form satisfactory to the Committee (and, if partial exercises
have been permitted by the Committee, by specifying the number of Shares with
respect to which such Participant elects to exercise such Option or Right)
together with full payment of the Exercise Price, if any and to the extent
required. The date of exercise shall be the date on which such notice is
received by the Corporation. Payment, if any is required, shall be made either
(i) in cash (including check, bank draft or money order) or (ii) by delivering
(A) Shares already owned by the Participant and having a fair market value equal
to the applicable exercise price, such fair market value to be determined in
such appropriate manner as may be provided by the Committee or as may be
required in order to comply with or to conform to requirements of any applicable
laws or regulations, or (B) a combination of cash and such Shares.

         (c) If a Participant to whom an Option or Right was granted shall cease
to maintain Continuous Service for any reason (excluding death or disability and
termination of employment by the Corporation or any Affiliate for cause), such
Participant may, but only within the period of three months immediately
succeeding such cessation of Continuous Service and in no event after the
expiration date of such Option or Right, exercise such Option or Right to the
extent that such Participant was entitled to exercise such Option or Right at
the date of such cessation; provided, however, that such right of exercise after
cessation of Continuous Service shall not be available to a Participant if the
Committee otherwise determines and so provides in the applicable instrument or
instruments evidencing the grant of such Option or Right. If a Participant to
whom an Option or Right was granted shall cease to maintain Continuous Service
by reason of death or disability then, unless the Committee shall have otherwise
provided in the instrument evidencing the grant of an Option or Stock
Appreciation Right, all Options and Rights granted and not fully exercisable
shall become exercisable in full upon the happening of such event and shall
remain so exercisable (i) in the event of death for the period described in
paragraph (d) of this Section 7 and (ii) in the event of disability for a period
of three months following such date. If the Continuous Service of a Participant
to whom an Option or Right was granted by the Corporation is terminated for
cause, all rights under any Option or Right of such Participant shall expire
immediately upon the giving to the Participant of notice of such termination.

         (d) In the event of the death of a Participant while in the Continuous
Service of the Corporation or an Affiliate or within the three month period
referred to in paragraph (c) of this Section 7, the person to whom any Option or
Right held by the Participant at the time of his death is transferred by will or
the laws of descent and distribution, or in the case of an Award other than an
Incentive Stock Option, pursuant to a qualified domestic

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relations order, as defined in the Code or Title 1 of ERISA or the rules
thereunder may, but only to the extent such Participant was entitled to exercise
such Option or Right as set forth in paragraph (c) of this Section 7, exercise
such Option or Right at any time within a period of one year succeeding the date
of death of such Participant, but in no event later than ten years from the date
of grant of such Option or Right. Following the death of any Participant to whom
an Option was granted under the Plan, irrespective of whether any Related Right
shall have been granted to the Participant or whether the person entitled to
exercise such Related Right desires to do so, the Committee may, as an
alternative means of settlement of such Option, elect to pay to the person to
whom such Option is transferred by will or by the laws of descent and
distribution, or in the case of an Option other than an Incentive Stock Option,
pursuant to a qualified domestic relations order, as defined in the Code or
Title I of ERISA or the rules there under, the amount by which the Market Value
per Share on the date of exercise of such Option shall exceed the Exercise Price
of such Option, multiplied by the number of Shares with respect to which such
Option is properly exercised. Any such settlement of an Option shall be
considered an exercise of such Option for all purposes of the Plan.

         8. Incentive Stock Options. Incentive Stock Options may be granted only
to Participants who are Employees. Any provision of the Plan to the contrary
notwithstanding, (i) no Incentive Stock Option shall be granted more than ten
years from the date the Plan is adopted by the Board of Directors of the
Corporation and no Incentive Stock Option shall be exercisable more than ten
years from the date such Incentive Stock Option is granted, (ii) the Exercise
Price of any Incentive Stock Option shall not be less than the Market Value per
Share on the date such Incentive Stock Option is granted, (iii) any Incentive
Stock Option shall not be transferable by the Participant to whom such Incentive
Stock Option is granted other than by will or the laws of descent and
distribution, and shall be exercisable during such Participant's lifetime only
by such Participant, (iv) no Incentive Stock Option shall be granted to any
individual who, at the time such Incentive Stock Option is granted, owns stock
possessing more than ten percent of the total combined voting power of all
classes of stock of the Corporation or any Affiliate unless the Exercise Price
of such Incentive Stock Option is at least 110 percent of the Market Value per
Share at the date of grant and such Incentive Stock Option is not exercisable
after the expiration of five years from the date such Incentive Stock Option is
granted, and (v) the aggregate Market Value (determined as of the time any
Incentive Stock Option is granted) of the Shares with respect to which Incentive
Stock Options are exercisable for the first time by a Participant in any
calendar year shall not exceed $100,000.

         9. Stock Appreciation Rights. A Stock Appreciation Right shall, upon
its exercise, entitle the Participant to whom such Stock Appreciation Right was
granted to receive a number of Shares or cash or combination thereof, as the
Committee in its discretion shall determine, the aggregate value of which (i.e.,
the sum of the amount of cash and/or Market Value of such Shares on date of
exercise) shall equal (as nearly as possible, it being understood that the
Corporation shall not issue any fractional shares) the amount by which the
Market Value per Share on the date of such exercise shall exceed the Exercise
Price of such Stock Appreciation Right, multiplied by the number of Shares with
respect of which such Stock Appreciation Right shall have been exercised. A
Stock Appreciation Right may be Related to an Option or may be granted
independently of any Option as the Committee shall from time to time in each
case determine. At the time of grant of an Option the Committee shall determine
whether and to what extent a Related Stock Appreciation Right shall be granted
with respect thereto; provided, however, and notwithstanding any other provision
of the Plan, that if the Related Option is an Incentive Stock Option, the
Related Stock Appreciation Right shall satisfy all the restrictions and
limitations of Section 8 hereof as if such Related Stock Appreciation Right were
an Incentive Stock Option and as if other rights which are Related to Incentive
Stock Options were Incentive Stock Options. In the case of a Related Option,
such Related Option shall cease to be exercisable to the extent of the Shares
with respect to which the Related Stock Appreciation Right was exercised. Upon
the exercise or termination of a Related Option, any Related Stock Appreciation
Right shall terminate to the extent of the Shares with respect to which the
Related Option was exercised or terminated.

         10. Restricted Stock and Performance Awards.

         (a) Restricted Stock. The Committee is hereby authorized to grant
Awards of Restricted Stock to Participants with the following terms and
conditions and with such additional terms and conditions not inconsistent with
the provisions of the Plan as the Committee shall determine:

         (i) Restrictions. Shares of Restricted Stock shall be subject to such
         restrictions as the Committee may impose (including, without
         limitation, any limitation on the right to vote a Share of Restricted
         Stock or the right to receive any dividend or other right or property
         with respect thereto), which restrictions may lapse separately or in
         combination at such time or times, in such installments or otherwise as
         the Committee may deem appropriate.

         (ii) Stock Certificates. Any Restricted Stock granted under the Plan
         shall be evidenced by issuance of a stock certificate or certificates,
         which certificate or certificates shall be held by the Corporation.
         Such certificate or certificates shall be registered in the name of the
         Participant and shall bear an appropriate legend referring to the
         restrictions applicable to such Restricted Stock.
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         (iii) Forfeiture; Delivery of Shares. Except as otherwise determined by
         the Committee, upon Termination of Service during the applicable
         restriction period, all Shares of Restricted Stock at such time subject
         to restriction shall be forfeited to the Corporation; provided,
         however, that the Committee may waive in whole or in part any or all
         remaining restrictions with respect to Shares of Restricted Stock.
         Shares representing Restricted Stock that is no longer subject to
         restrictions shall be delivered to the holder thereof promptly after
         the applicable restrictions lapse or are waived.

         (b) Performance Awards. The Committee is hereby authorized to grant
performance Awards to Participants subject to the terms of the Plan and any
applicable Award Agreement. A performance Award granted under the Plan (i) may
be denominated or payable in cash, Shares (including, without limitation,
Restricted Stock), other securities, other Awards or other property and (ii)
shall confer on the holder thereof the right to receive payments, in whole or in
part, upon the achievement of such performance goals during such performance
periods as the Committee shall establish. Subject to the terms of the Plan and
any applicable Award Agreement, the performance goals to be achieved during any
performance period, the length of any performance period, the amount of any
performance Award granted and the amount of any payment or transfer to be made
pursuant to any performance Award shall be determined by the Committee.

         11. Adjustments Upon Changes in Capitalization. In the event of any
change in the outstanding Shares subsequent to the effective date of the Plan by
reason of any reorganization, recapitalization, stock split, stock dividend,
combination or exchange of shares, merger, consolidation or any change in the
corporate structure or Shares of the Corporation, the maximum aggregate number
and class of shares as to which Awards may be granted under the Plan and the
number, class and exercise price of shares with respect to which Awards have
been granted under the Plan shall be appropriately adjusted by the Committee,
whose determination shall be conclusive. Creation of a class of Serial Preferred
Stock or issuance of such shares hereafter shall not be deemed to constitute a
change requiring adjustment under this Section.

         12. Effect of Merger and Change in Control.

         (a) Merger. In the event of any merger, consolidation or combination of
the Corporation (other than a merger, consolidation or combination in which the
Corporation is the continuing entity and which does not result in the
outstanding Shares being converted into or exchanged for different securities,
cash or other property, or any combination thereof) pursuant to a plan or
agreement the terms of which are binding upon all shareholders of the
Corporation (except to the extent that dissenting shareholders may be entitled,
under statutory provisions or provisions contained in the articles of
incorporation, to receive the appraised or fair value of their holdings), any
Participant to whom an Option or Right has been granted shall have the right
(subject to the provisions of the Plan and any limitation or vesting period
applicable to such Option or Right), thereafter and during the term of each such
Option or Right, to receive upon exercise of any such Option or Right an amount
equal to the excess of the fair market value on the date of such exercise of the
securities, cash or other property, or combination thereof, receivable upon such
merger, consolidation or combination in respect of a Share over the Exercise
Price of such Right or Option, multiplied by the number of Shares with respect
to which such Option or Right shall have been exercised. Such amount may be
payable fully in cash, fully in one or more of the kind or kinds of property
payable in such merger, consolidation or combination, or partly in cash and
partly in one or more of such kind or kinds of property, all in the discretion
of the Committee.

         (b) Change in Control. Each of the events specified in the following
clauses (i) through (iii) of this Section 12(b) shall be deemed a "change in
control": (i) any third person, including a "group," as defined in Section
13(d)(3) of the Securities Exchange Act of 1934, shall become the beneficial
owner of shares of the Corporation with respect to which 25% or more of the
total number of votes for the election of the Board of Directors of the
Corporation may be cast (other than any person or group owning 25% or more of
the Common Stock as of the date of adoption of the Plan, and other than any
person who, together with members of his immediate family, owns 25% or more of
the Common Stock as of the date of adoption of the Plan), (ii) as a result of,
or in connection with, any cash tender offer, merger or other business
combination, sale of assets or contested election, or combination of the
foregoing, the persons who were directors of the Corporation shall cease to
constitute a majority of the Board of Directors of the Corporation, or (iii) the
shareholders of the Corporation shall approve an agreement providing either for
a transaction in which the Corporation will cease to be an independent, publicly
owned corporation or for a sale or other disposition of all or substantially all
the assets of the Corporation. Upon a change in control, unless the Committee
shall have otherwise provided in the Award Agreement, any restricted period with
respect to Restricted Stock awarded to such Participant shall lapse and all
Shares awarded as Restricted Stock shall become fully vested in the Participant
to whom such Shares were awarded. If a tender offer or exchange offer for Shares
(other than such an offer by the Corporation) is commenced, or if the event
specified in clause (iii) above shall occur, unless the Committee shall have
otherwise provided in the Award Agreement, all Options and Stock Appreciation
Rights granted and not fully exercisable shall become exercisable in full upon
the happening of such event; provided, however, that no Option or Stock
Appreciation Right that has previously been exercised or otherwise terminated
shall become exercisable.

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         13. Assignments and Transfers. No Award nor any right or interest of a
Participant under the Plan in any instrument evidencing any Award under the Plan
may be assigned, encumbered or transferred except, in the event of the death of
a Participant, by will or the laws of descent and distribution or in the case of
Awards other than Incentive Stock Options pursuant to a qualified domestic
relations order, as defined in the Code or Title I of ERISA or the rules
thereunder.

         14. Employee Rights Under the Plan. No director, officer or employee
shall have a right to be selected as a Participant nor, having been so selected,
to be selected again as a Participant and no director, officer, employee or
other person shall have any claim or right to be granted an Award under the Plan
or under any other incentive or similar plan of the Corporation or any
Affiliate. Neither the Plan nor any action taken thereunder shall be construed
as giving any employee any right to be retained in the employ of the Corporation
or any Affiliate.

         15. Delivery and Registration of Stock. The Corporation's obligation to
deliver Shares with respect to an Award shall, if the Committee so requests, be
conditioned upon the receipt of a representation as to the investment intention
of the Participant to whom such Shares are to be delivered, in such form as the
Committee shall determine to be necessary or advisable to comply with the
provisions of the Securities Act of 1933 or any other Federal, state or local
securities legislation or regulation. It may be provided that any representation
requirement shall become inoperative upon a registration of the Shares or other
action eliminating the necessity of such representation under the Securities Act
of 1933 or other applicable securities law. The Corporation shall not be
required to deliver any Shares under the Plan prior to (i) the admission of such
shares to listing on any stock exchange on which Shares may then be listed, and
(ii) the completion of such registration or other qualification of such Shares
under any state or Federal law, rule or regulation, as the Committee shall
determine to be necessary or advisable.

         16. Withholding Tax. Upon the termination of the restricted period with
respect to any shares of Restricted Stock (or at any such earlier time, if any,
that an election is made by the Participant under Section 83(b) of the Code, or
any successor provision thereto, to include the value of such shares in taxable
income), the Corporation shall have the right to require the Participant or
other person receiving such shares to pay the Corporation the amount of any
taxes which the Corporation is required to withhold with respect to such shares,
or, in lieu thereof, to retain or sell without notice, a sufficient number of
shares held by it to cover the amount required to be withheld. The Corporation
shall have the right to deduct from all dividends paid with respect to shares of
Restricted Stock the amount of any taxes which the Corporation is required to
withhold with respect to such dividend payments.

         The Corporation shall have the right to deduct from all amounts paid in
cash with respect to the exercise of a Right under the Plan any taxes required
by law to be withheld with respect to such cash payments. Where a Participant or
other person is entitled to receive Shares pursuant to the exercise of an Option
or Right pursuant to the Plan, the Corporation shall have the right to require
the Participant or such other person to pay the Corporation the amount of any
taxes which the Corporation is required to withhold with respect to such Shares,
or, in lieu thereof, to retain, or sell without notice, a number of such Shares
sufficient to cover the amount required to be withheld.

         All withholding decisions pursuant to this Section 16 shall be at the
sole discretion of the Committee or the Corporation.

         17. Amendment or Termination. The Board of Directors of the Corporation
may amend, suspend or terminate the Plan or any portion thereof at any time, but
(except as provided in Section 11 hereof) no amendment shall be made without
approval of the shareholders of the Corporation which shall (i) increase the
aggregate number of Shares with respect to which Awards may be made under the
Plan (except pursuant to Section 11), (ii) materially increase the benefits
accruing to Participants, (iii) materially change the requirements as to
eligibility for participation in the Plan or (iv) change the class of persons
eligible to participate in the Plan; provided, that no such amendment,
suspension or termination shall impair the rights of any Participant, without
his consent, in any Award made pursuant to the Plan.

         18. Effective Date and Term of Plan. The Plan shall become effective
upon its adoption by shareholders of the Corporation. It shall continue in
effect for a term of ten years unless sooner terminated under Section 17 hereof.

         19. Initial Grant. Following adoption of this Plan by the shareholders
of the Corporation at the Corporation's 1999 Annual Meeting of Shareholder of
the Corporation, each member of the Board of Directors of the Corporation who is
not an Employee (which term includes officers) shall be granted a ten-year,
Non-Qualified Stock Option to purchase 500 shares at an Exercise Price per share
equal to the Market Value per share of the Shares on the date of grant. Any
director who is elected or appointed hereafter, but during the term of the Plan,
who is not then an Employee shall be granted a ten-year, Non-Qualified Stock
Option to purchase 500 shares at an Exercise Price per share equal to the Market
Value per share of the Shares on the date of grant, the number of

<PAGE>   7

Shares being subject to possible adjustment as provided in Section 11 in the
event of intervening changes in capitalization; provided, however, that no
director shall receive more than one Award pursuant to this Section 19.

         Each Option issued under this Section 19 shall be evidenced by a
Non-Qualified Stock Option Agreement in a form approved by the Board of
Directors and shall be subject in all respects to the terms and conditions of
this Plan, which are controlling. All Options granted pursuant to this section
shall become exercisable on the first anniversary of the date of grant, subject
to the Director maintaining Continuous Service with the Corporation or its
Affiliates since the date of grant.

         20. Successors. All obligations of the Corporation under the Plan, with
respect to Awards granted hereunder, shall be binding on any successor to the
Corporation, whether the existence of such successor is the result of a direct
or indirect purchase, merger, consolidation or otherwise, of all or
substantially all of the business and/or assets of the Corporation.

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