COM21 INC
S-8, 1998-06-23
COMPUTER PROGRAMMING, DATA PROCESSING, ETC.
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<PAGE>   1
    As filed with the Securities and Exchange Commission on June 22, 1998
                                                           Registration No. 333-
================================================================================

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

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

                                    FORM S-8
                             REGISTRATION STATEMENT
                                      Under
                           The Securities Act of 1933

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

                                   COM21, INC.
             (Exact name of registrant as specified in its charter)

           DELAWARE                                       94-3201698
 (State or other jurisdiction                  (IRS Employer Identification No.)
of incorporation or organization)

                                750 TASMAN DRIVE
                           MILPITAS, CALIFORNIA 95035
               (Address of principal executive offices) (Zip Code)

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

                                   COM21, INC.
                            1998 STOCK INCENTIVE PLAN
                        1998 EMPLOYEE STOCK PURCHASE PLAN
                            (Full title of the Plans)

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

                                 PETER D. FENNER
                             CHIEF EXECUTIVE OFFICER
                                   COM21, INC.
                                750 TASMAN DRIVE
                           MILPITAS, CALIFORNIA 95035
                     (Name and address of Agent for service)
                                 (408) 953-9100
          (Telephone number, including area code, of agent for service)

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

<TABLE>
<CAPTION>
                                       CALCULATION OF REGISTRATION FEE
=======================================================================================================
                                                        Proposed        Proposed
         Title of                                       Maximum         Maximum
        Securities                     Amount           Offering        Aggregate        Amount of
           to be                        to be           Price           Offering        Registration
        Registered                  Registered(1)     per Share(2)      Price(2)            Fee
        ----------                  -------------     ------------      --------            ---
<S>                                <C>                <C>            <C>                <C>
1998 Stock Incentive Plan
 Common Stock, $0.001 par value    2,795,080 shares   $ 15.85        $ 44,302,018       $ 13,069.10
                                                       -----------    -----------        ----------
1998 Employee Stock Purchase Plan
 Common Stock, $0.001 par value    250,000 shares     $ 15.85        $ 3,962,500        $ 1,168.94
                                                       -----------    -----------        ----------
                                                                     Aggregate Filing Fee:  $ 14,238.04
                                                                                             ----------
=======================================================================================================
</TABLE>

(1)    This Registration Statement shall also cover any additional shares of
       Common Stock which become issuable under the Com21, Inc. 1998 Stock
       Incentive Plan and 1998 Employee Stock Purchase Plan by reason of any
       stock dividend, stock split, recapitalization or other similar
       transaction effected without the Registrant's receipt of consideration
       which results in an increase in the number of the outstanding shares of
       the Registrant's Common Stock.

(2)    Calculated solely for purposes of this offering under Rule 457(h) of the
       Securities Act of 1933, as amended (the "1933 Act"), on the basis of the
       average of the high and low selling prices per share of the Registrant's
       Common Stock on June 18, 1998, as reported on the Nasdaq National Market.



<PAGE>   2

                                     PART II

               INFORMATION REQUIRED IN THE REGISTRATION STATEMENT



Item 3.  Incorporation of Documents by Reference

        Com21, Inc. (the "Registrant") hereby incorporates by reference into
this Registration Statement the following documents previously filed with the
Securities and Exchange Commission (the "Commission"):

        (a)    The Registrant's Registration Statement No. 333-48107 on Form S-1
               filed with the Commission on March 17, 1998, together with the
               amendments thereto on Forms S-1/A filed with the Commission on
               April 24, 1998, May 7, 1998, May 19, 1998 and May 21, 1998;

        (b)    The Registrant's prospectus filed with the Commission on May 22,
               1998 under SEC Rule 424(b)(4) in connection with Registrant's
               Registration Statement No. 333-48107, in which there is set forth
               the audited financial statements for the Registrant's fiscal year
               ended December 31, 1997; and

        (c)    The Registrant's Registration Statement No. 000-24009 on Form 8-A
               filed with the Commission on April 8, 1998, in which there is
               described the terms, rights and provisions applicable to the
               Registrant's outstanding Common Stock.

        All reports and definitive proxy or information statements filed
pursuant to Section 13(a), 13(c), 14 or 15(d) of the Securities and Exchange Act
of 1934, as amended (the "1934 Act") after the date of this Registration
Statement and prior to the filing of a post-effective amendment which indicates
that all securities offered hereby have been sold or which de-registers all
securities then remaining unsold shall be deemed to be incorporated by reference
into this Registration Statement and to be a part hereof from the date of filing
of such documents. Any statement contained in a document incorporated or deemed
to be incorporated by reference herein shall be deemed to be modified or
superseded for purposes of this Registration Statement to the extent that a
statement contained herein or in any subsequently filed document which also is
deemed to be incorporated by reference herein modifies or supersedes such
statement. Any such statement so modified or superseded shall not be deemed,
except as so modified or superseded, to constitute a part of this Registration
Statement.


Item 4.  Description of Securities

         Not Applicable.

Item 5.  Interests of Named Experts and Counsel

         Not Applicable.


Item 6.  Indemnification of Directors and Officers

        The Registrant's Certificate of Incorporation limits the liability of
directors to the maximum extent permitted by Delaware law. Delaware law provides
that directors of a corporation will not be personally liable for monetary
damages for breach of their fiduciary duties as directors, except for liability
for (i) any breach of their duty of loyalty to the corporation or its
stockholders, (ii) acts or omissions not in good faith or that involve
intentional misconduct or a knowing violation of law, (iii) unlawful payments of
dividends or unlawful stock repurchases or redemptions



                                      II-1

<PAGE>   3



as provided in Section 174 of the Delaware General Corporation Law, or (iv) any
transaction from which the director derives an improper personal benefit.

        The Registrant's Bylaws provide that the Registrant shall indemnify its
directors and may indemnify its officers, employees and other agents to the
fullest extent permitted by law. The Registrant believes that indemnification
under its Bylaws covers at least negligence and gross negligence on the part of
an indemnified party in connection with the defense of any action or proceeding
arising out of such party's status or service as a director, officer, employee
or other agent of the Company upon an undertaking by such party to repay such
advances if it is ultimately determined that such party is not entitled to
indemnification.

Item 7.  Exemption from Registration Claimed

         Not Applicable.

Item 8.  Exhibits

<TABLE>
<CAPTION>
Exhibit Number    Exhibit
<S>               <C>
     4            Instruments Defining the Rights of Stockholders.  Reference is made to Registrant's
                  Registration Statement No. 000-24009 on Form 8-A, and the exhibits thereto, which are
                  incorporated herein by reference pursuant to Item 3(c).
     5            Opinion and consent of Brobeck, Phleger & Harrison LLP.
    23.1          Independent Auditors' Consent
    23.2          Consent of Brobeck, Phleger & Harrison LLP is contained in Exhibit 5.
    24            Power of Attorney.  Reference is made to page II-4 of this Registration Statement.
    99.1          Com21, Inc. 1998 Stock Incentive Plan.
    99.2          Form of Notice of Grant of Stock Option.
    99.3          Form of Stock Option Agreement.
    99.4          Form of Addendum to Stock Option Agreement (Limited Stock Appreciation Right)
    99.5          Form of Addendum to Stock Option Agreement (Involuntary Termination Following Corporate
                  Transaction/Change In Control)
    99.6          Form of Stock Issuance Agreement
    99.7          Form of Addendum to Stock Issuance Agreement (Involuntary Termination Following
                  Corporate Transaction/Change In Control)
    99.8          Form of Notice of Grant of Non-Employee Director of Automatic Stock Option (Initial Grant)
    99.9          Form of Notice of Grant of Non-Employee Director of Automatic Stock Option (Annual Grant)
    99.10         Form of Automatic Stock Option Agreement
    99.11         1998 Employee Stock Purchase Plan.
    99.12         Form of Employee Stock Purchase Plan Enrollment/Change Form.
    99.13         Form of Stock Purchase Agreement.
    99.14         Com21, Inc. 1995 Stock Option Plan
</TABLE>


Item 9.  Undertakings

                  A. The undersigned Registrant hereby undertakes: (1) to file,
during any period in which offers or sales are being made, a post-effective
amendment to this Registration Statement (i) to include any prospectus required
by Section 10(a)(3) of the 1933 Act, (ii) to reflect in the prospectus any facts
or events arising after the effective date of this Registration Statement (or
the most recent post-effective amendment thereof) which, individually or in the
aggregate, represent a fundamental change in the information set forth in this
Registration Statement and (iii) to include any material information with
respect to the plan of distribution not previously



                                      II-2

<PAGE>   4


disclosed in this Registration Statement or any material change to such
information in this Registration Statement; provided, however, that clauses
(1)(i) and (1)(ii) shall not apply if the information required to be included in
a post-effective amendment by those clauses is contained in periodic reports
filed by the Registrant pursuant to Section 13 or Section 15(d) of the 1934 Act
that are incorporated by reference into this Registration Statement; (2) that
for the purpose of determining any liability under the 1933 Act each such
post-effective amendment shall be deemed to be a new registration statement
relating to the securities offered therein and the offering of such securities
at that time shall be deemed to be the initial bona fide offering thereof; and
(3) to remove from registration by means of a post-effective amendment any of
the securities being registered which remain unsold at the termination of the
Registrant's 1998 Stock Incentive Plan and 1998 Employee Stock Purchase Plan.

                  B. The undersigned Registrant hereby undertakes that, for
purposes of determining any liability under the 1933 Act, each filing of the
Registrant's annual report pursuant to Section 13(a) or Section 15(d) of the
1934 Act that is incorporated by reference into this Registration Statement
shall be deemed to be a new registration statement relating to the securities
offered therein, and the offering of such securities at that time shall be
deemed to be the initial bona fide offering thereof.

                  C. Insofar as indemnification for liabilities arising under
the 1933 Act may be permitted to directors, officers or controlling persons of
the Registrant pursuant to the indemnification provisions summarized in Item 6
or otherwise, the Registrant has been advised that, in the opinion of the
Commission, such indemnification is against public policy as expressed in the
1933 Act and is, therefore, unenforceable. In the event that a claim for
indemnification against such liabilities (other than the payment by the
Registrant of expenses incurred or paid by a director, officer, or controlling
person of the Registrant in the successful defense of any action, suit or
proceeding) is asserted by such director, officer or controlling person in
connection with the securities being registered, the Registrant will, unless in
the opinion of its counsel the matter has been settled by controlling precedent,
submit to a court of appropriate jurisdiction the question whether such
indemnification by it is against public policy as expressed in the 1933 Act and
will be governed by the final adjudication of such issue.


                                      II-3

<PAGE>   5


                                   SIGNATURES

               Pursuant to the requirements of the Securities Act of 1933, as
amended, the Registrant certifies that it has reasonable grounds to believe that
it meets all of the requirements for filing on Form S-8, and has duly caused
this Registration Statement to be signed on its behalf by the undersigned,
thereunto duly authorized, in the City of Milpitas, State of California on this
17 day of June , 1998.

                                    COM21, INC.


                                    By:  /s/ Peter D. Fenner
                                        ----------------------------------------
                                         Peter D. Fenner
                                         President, Chief Executive Officer and
                                         Director



                                POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS:

               That the undersigned officers and directors of Com21, Inc., a
Delaware corporation, do hereby constitute and appoint Peter D. Fenner and David
L. Robertson and each of them, the lawful attorneys-in-fact and agents with full
power and authority to do any and all acts and things and to execute any and all
instruments which said attorneys and agents, and any one of them, determine may
be necessary or advisable or required to enable said corporation to comply with
the Securities Act of 1933, as amended, and any rules or regulations or
requirements of the Securities and Exchange Commission in connection with this
Registration Statement. Without limiting the generality of the foregoing power
and authority, the powers granted include the power and authority to sign the
names of the undersigned officers and directors in the capacities indicated
below to this Registration Statement, to any and all amendments, both
pre-effective and post-effective, and supplements to this Registration
Statement, and to any and all instruments or documents filed as part of or in
conjunction with this Registration Statement or amendments or supplements
thereof, and each of the undersigned hereby ratifies and confirms that all said
attorneys and agents, or any one of them, shall do or cause to be done by virtue
hereof. This Power of Attorney may be signed in several counterparts.

               IN WITNESS WHEREOF, each of the undersigned has executed this
Power of Attorney as of the date indicated.

               Pursuant to the requirements of the Securities Act of 1933, as
amended, this Registration Statement has been signed below by the following
persons in the capacities and on the dates indicated.

<TABLE>
<CAPTION>
Signature                              Title                                     Date
- ---------                              -----                                     ----

<S>                                    <C>                                      <C>
/s/ Peter D. Fenner                    President, Chief Executive Officer and   June 17, 1998
- -------------------------------        Director (Principal Executive Officer)   
Peter D. Fenner                        



/s/ Paul Baran                         Chairman of the Board of Directors       June 17, 1998
- -------------------------------                                                 
Paul Baran

</TABLE>


                                                II-4

<PAGE>   6


<TABLE>
<CAPTION>
Signature                              Title                                        Date
- ---------                              -----                                        ----
<S>                                    <C>                                         <C>


/s/ David L. Robertson                 Chief Financial Officer, Vice President,    June 17, 1998
- -------------------------------        Finance and Secretary (Principal        
David L. Robertson                     Financial Officer)




/s/ C. Richard Kramlich                Director                                    June 17, 1998
- -------------------------------                                                    
C. Richard Kramlich



/s/ Scott J. Loftesness                Director                                    June 17, 1998
- -------------------------------                                                    
Scott J. Loftesness



/s/ Robert C. Hawk                     Director                                    June 17, 1998
- -------------------------------                                                 
Robert C. Hawk



/s/ William R. Hearst, III             Director                                    June 17, 1998
- -------------------------------                                                   
William R. Hearst, III



                                       Director                                               , 1998
- -------------------------------                                                    -----------
Robert A. Hoff



                                       Director                                               , 1998
- -------------------------------                                                    -----------
Robert W. Wilmot

</TABLE>



                                      II-5

<PAGE>   7

                                  EXHIBIT INDEX


<TABLE>
<CAPTION>
Exhibit Number    Exhibit
<S>               <C>
     4            Instruments Defining the Rights of Stockholders.  Reference is made to Registrant's
                  Registration Statement No. 000-24009 on Form 8-A, and the exhibits thereto, which are
                  incorporated herein by reference pursuant to Item 3(c).
     5            Opinion and consent of Brobeck, Phleger & Harrison LLP.
    23.1          Independent Auditors' Consent 
    23.2          Consent of Brobeck, Phleger & Harrison LLP is contained in Exhibit 5.
    24            Power of Attorney.  Reference is made to page II-4 of this Registration Statement.
    99.1          Com21, Inc. 1998 Stock Incentive Plan.
    99.2          Form of Notice of Grant of Stock Option.
    99.3          Form of Stock Option Agreement.
    99.4          Form of Addendum to Stock Option Agreement (Limited Stock Appreciation Right)
    99.5          Form of Addendum to Stock Option Agreement (Involuntary Termination Following Corporate
                  Transaction/Change In Control)
    99.6          Form of Stock Issuance Agreement
    99.7          Form of Addendum to Stock Issuance Agreement (Involuntary Termination Following
                  Corporate Transaction/Change In Control)
    99.8          Form of Notice of Grant of Non-Employee Director of Automatic Stock Option (Initial Grant)
    99.9          Form of Notice of Grant of Non-Employee Director of Automatic Stock Option (Annual Grant)
    99.10         Form of Automatic Stock Option Agreement
    99.11         1998 Employee Stock Purchase Plan.
    99.12         Form of Employee Stock Purchase Plan Enrollment/Change Form.
    99.13         Form of Stock Purchase Agreement.
    99.14         Com21, Inc. 1995 Stock Option Plan
</TABLE>



<PAGE>   1
                                                                       EXHIBIT 5

                  [BROBECK PHLEGER & HARRISON LLP LETTERHEAD]


                                 June 17, 1998


Com 21, Inc.
750 Tasman Drive
Milpitas, CA 95035

          Re:  Com21, Inc. Registration Statement on Form S-8 for 3,045,080
               Shares of Common Stock and Related Stock Options

Ladies and Gentlemen:

          We have acted as counsel to Com21, Inc., a Delaware corporation (the 
"Company") in connection with the registration on Form S-8 (the "Registration
Statement") under the Securities Act of 1933, as amended, of 3,045,080 shares
of common stock (the "Shares") and related stock options for issuance under the
Company's 1998 Stock Incentive Plan (the "Incentive Plan") and the 1998
Employee Stock Purchase Plan (the "Purchase Plan").

          This opinion is being furnished in accordance with the requirements
of Item 8 of Form S-8 and Item 601(b)(5)(i) of Regulation S-K.

          We have reviewed the Company's charter documents and the corporate
proceedings taken by the Company in connection with the establishment of the
Plan. Based on such review, we are of the opinion that, if, as and when the
Shares have been issued and sold (and the consideration therefor received)
pursuant to (a) the provisions of option agreements duly authorized under the
Plan and in accordance with the Registration Statement, or (b) duly authorized
direct stock issuances in accordance with the Plan and in accordance with the
Registration Statement, such Shares will be duly authorized, legally issued,
fully paid and nonassessable.

          We consent to the filing of this opinion letter as Exhibit 5.1 to the
Registration Statement. 




<PAGE>   2

                                                                   June 17, 1998
                                                                          Page 2

     This opinion letter is rendered as of the date first written above and we
disclaim any obligation to advise you of facts, circumstances, events or
developments which hereafter may be brought to our attention and which may
alter, affect or modify the opinion expressed herein. Our opinion is expressly
limited to the matters set forth above and we render no opinion, whether by
implication or otherwise, as to any other matters relating to the Company, the
Plan or the Shares.


                                        Very truly yours,

                                        /s/ BROBECK, PHLEGER & HARRISON LLP     
                                        ------------------------------------
                                        BROBECK, PHLEGER & HARRISON LLP     

<PAGE>   1

                                                                    EXHIBIT 23.1

                 OPINION AND CONSENT OF INDEPENDENT ACCOUNTANTS


                        CONSENT OF INDEPENDENT AUDITORS

We consent to the incorporation by reference in this Registration Statement of
Com21, Inc. on Form S-8 of our report dated January 16, 1998 (March 10, 1998 as
to the first through fifth paragraphs of Note 11; April 22, 1998 as to the last
two paragraphs of Note 11; and May 13, 1998 as to the sixth paragraph of Note
11), which appears in the Prospectus constituting part of the Registration
Statement on Form S-1 (No. 333-48107) filed pursuant to Rule 424(b)(4).

/s/ Deloitte & Touche LLP

DELOITTE & TOUCHE LLP
San Jose, California
June 17, 1998





<PAGE>   1
                                                                    EXHIBIT 99.1

                                   COM21, INC.
                            1998 STOCK INCENTIVE PLAN


                                   ARTICLE ONE

                               GENERAL PROVISIONS


       I.      PURPOSE OF THE PLAN

               This 1998 Stock Incentive Plan is intended to promote the
interests of Com 21, Inc., a Delaware corporation, by providing eligible persons
with the opportunity to acquire a proprietary interest, or otherwise increase
their proprietary interest, in the Corporation as an incentive for them to
remain in the service of the Corporation.

               Capitalized terms shall have the meanings assigned to such terms
in the attached Appendix.

      II.      STRUCTURE OF THE PLAN

               A. The Plan shall be divided into five separate equity programs:

                        - the Discretionary Option Grant Program under which
eligible persons may, at the discretion of the Plan Administrator, be granted
options to purchase shares of Common Stock,

                        - the Salary Investment Option Grant Program under which
eligible employees may elect to have a portion of their base salary invested
each year in special option grants,

                        - the Stock Issuance Program under which eligible
persons may, at the discretion of the Plan Administrator, be issued shares of
Common Stock directly, either through the immediate purchase of such shares or
as a bonus for services rendered the Corporation (or any Parent or Subsidiary),

                        - the Automatic Option Grant Program under which
eligible non- employee Board members shall automatically receive option grants
at periodic intervals to purchase shares of Common Stock, and

                        - the Director Fee Option Grant Program under which
non-employee Board members may elect to have all or any portion of their annual
retainer fee otherwise payable in cash applied to a special option grant.


<PAGE>   2

               B. The provisions of Articles One and Seven shall apply to all
equity programs under the Plan and shall govern the interests of all persons
under the Plan.

     III.      ADMINISTRATION OF THE PLAN

               A. The Primary Committee shall have sole and exclusive authority
to administer the Discretionary Option Grant and Stock Issuance Programs with
respect to Section 16 Insiders. Administration of the Discretionary Option Grant
and Stock Issuance Programs with respect to all other persons eligible to
participate in those programs may, at the Board's discretion, be vested in the
Primary Committee or a Secondary Committee, or the Board may retain the power to
administer those programs with respect to all such persons. However, any
discretionary option grants or stock issuances for members of the Primary
Committee shall be made by a disinterested majority of the Board.

               B. Members of the Primary Committee or any Secondary Committee
shall serve for such period of time as the Board may determine and may be
removed by the Board at any time. The Board may also at any time terminate the
functions of any Secondary Committee and reassume all powers and authority
previously delegated to such committee.

               C. Each Plan Administrator shall, within the scope of its
administrative functions under the Plan, have full power and authority (subject
to the provisions of the Plan) to establish such rules and regulations as it may
deem appropriate for proper administration of the Discretionary Option Grant and
Stock Issuance Programs and to make such determinations under, and issue such
interpretations of, the provisions of such programs and any outstanding options
or stock issuances thereunder as it may deem necessary or advisable. Decisions
of the Plan Administrator within the scope of its administrative functions under
the Plan shall be final and binding on all parties who have an interest in the
Discretionary Option Grant and Stock Issuance Programs under its jurisdiction or
any option or stock issuance thereunder.

               D. The Primary Committee shall have the sole and exclusive
authority to determine which Section 16 Insiders and other highly compensated
Employees shall be eligible for participation in the Salary Investment Option
Grant Program for one or more calendar years. However, all option grants under
the Salary Investment Option Grant Program shall be made in accordance with the
express terms of that program, and the Primary Committee shall not exercise any
discretionary functions with respect to the option grants made under that
program.

               E. Service on the Primary Committee or the Secondary Committee
shall constitute service as a Board member, and members of each such committee
shall accordingly be entitled to full indemnification and reimbursement as Board
members for their service on such committee. No member of the Primary Committee
or the Secondary Committee shall be liable for any act or omission made in good
faith with respect to the Plan or any option grants or stock issuances under the
Plan.


                                       2.

<PAGE>   3

               F. Administration of the Automatic Option Grant and Director Fee
Option Grant Programs shall be self-executing in accordance with the terms of
those programs, and no Plan Administrator shall exercise any discretionary
functions with respect to any option grants or stock issuances made under those
programs.

     IV.       ELIGIBILITY

               A. The persons eligible to participate in the Discretionary
Option Grant and Stock Issuance Programs are as follows:

                           (i) Employees,

                          (ii) non-employee members of the Board or the board of
        directors of any Parent or Subsidiary, and

                         (iii) consultants and other independent advisors who
        provide services to the Corporation (or any Parent or Subsidiary).

               B. Only Employees who are Section 16 Insiders or other highly
compensated individuals shall be eligible to participate in the Salary
Investment Option Grant Program.

               C. Each Plan Administrator shall, within the scope of its
administrative jurisdiction under the Plan, have full authority to determine,
(i) with respect to the option grants under the Discretionary Option Grant
Program, which eligible persons are to receive option grants, the time or times
when such option grants are to be made, the number of shares to be covered by
each such grant, the status of the granted option as either an Incentive Option
or a Non-Statutory Option, the time or times when each option is to become
exercisable, the vesting schedule (if any) applicable to the option shares and
the maximum term for which the option is to remain outstanding and (ii) with
respect to stock issuances under the Stock Issuance Program, which eligible
persons are to receive stock issuances, the time or times when such issuances
are to be made, the number of shares to be issued to each Participant, the
vesting schedule (if any) applicable to the issued shares and the consideration
for such shares.

               D. The Plan Administrator shall have the absolute discretion
either to grant options in accordance with the Discretionary Option Grant
Program or to effect stock issuances in accordance with the Stock Issuance
Program.

               E. The individuals who shall be eligible to participate in the
Automatic Option Grant Program shall be limited to (i) those individuals who
first become non-employee Board members after the Underwriting Date, whether
through appointment by the Board or election by the Corporation's stockholders,
and (ii) those individuals who continue to serve as non-employee Board members
at one or more Annual Stockholders Meetings held after the Underwriting Date. A
non-employee Board member who has previously been in the employ of the
Corporation (or any Parent or Subsidiary) shall not be eligible to receive an
option grant under the Automatic

                                       3.

<PAGE>   4

Option Grant Program at the time he or she first becomes a non-employee Board
member, but shall be eligible to receive periodic option grants under the
Automatic Option Grant Program while he or she continues to serve as a
non-employee Board member.

               F. All non-employee Board members shall be eligible to
participate in the Director Fee Option Grant Program.

       V.      STOCK SUBJECT TO THE PLAN

               A. The stock issuable under the Plan shall be shares of
authorized but unissued or reacquired Common Stock, including shares repurchased
by the Corporation on the open market. The maximum number of shares of Common
Stock initially reserved for issuance over the term of the Plan shall not exceed
2,523,510 shares, which shall consist of the number of shares which remained
available for issuance, as of the Plan Effective Date, under the Predecessor
Plan as last approved by the Corporation's stockholders, including the shares
subject to outstanding options under that Predecessor Plan. To the extent any
unvested shares of Common Stock outstanding under the Predecessor Plan as of the
Plan Effective Date are subsequently repurchased by the Corporation, at the
option exercise price paid per share, in connection with the holder's
termination of service prior to vesting in the shares, those repurchased shares
shall be added to the reserve of Common Stock available for issuance under the
Plan, but in no event shall the number of such repurchased shares added to the
reserve exceed 271,570 shares.

               B. The number of shares of Common Stock available for issuance
under the Plan shall automatically increase on the first trading day of each
calendar year during the term of the Plan, beginning with the 1999 calendar
year, by an amount equal to five percent (5%) of the shares of Common Stock
outstanding on the last trading day of the immediately preceding calendar year,
but in no event shall any such annual increase exceed 1,500,000 shares.

               C. No one person participating in the Plan may receive options,
separately exercisable stock appreciation rights and direct stock issuances for
more than 500,000 shares of Common Stock in the aggregate per calendar year,
beginning with the 1998 calendar year.

               D. Shares of Common Stock subject to outstanding options
(including options incorporated into this Plan from the Predecessor Plan) shall
be available for subsequent issuance under the Plan to the extent (i) those
options expire or terminate for any reason prior to exercise in full or (ii) the
options are cancelled in accordance with the cancellation-regrant provisions of
Article Two. Unvested shares issued under the Plan and subsequently cancelled or
repurchased by the Corporation (including unvested shares issued under the
Predecessor Plan and repurchased by the Corporation at or after the Plan
Effective Date), at the original issue price paid per share, pursuant to the
Corporation's repurchase rights under the Plan shall be added back to the number
of shares of Common Stock reserved for issuance under the Plan and shall
accordingly be available for reissuance through one or more subsequent option
grants or direct stock issuances under the Plan. However, should the exercise
price of an option under the Plan be paid with shares of Common Stock or should
shares of Common Stock otherwise issuable under the Plan 


                                       4.

<PAGE>   5

be withheld by the Corporation in satisfaction of the withholding taxes incurred
in connection with the exercise of an option or the vesting of a stock issuance
under the Plan, then the number of shares of Common Stock available for issuance
under the Plan shall be reduced by the gross number of shares for which the
option is exercised or which vest under the stock issuance, and not by the net
number of shares of Common Stock issued to the holder of such option or stock
issuance. Shares of Common Stock underlying one or more stock appreciation
rights exercised under Section IV of Article Two of the Plan shall NOT be
available for subsequent issuance under the Plan.

               E. If any change is made to the Common Stock by reason of any
stock split, stock dividend, recapitalization, combination of shares, exchange
of shares or other change affecting the outstanding Common Stock as a class
without the Corporation's receipt of consideration, appropriate adjustments
shall be made to (i) the maximum number and/or class of securities issuable
under the Plan, (ii) the number and/or class of securities for which any one
person may be granted stock options, separately exercisable stock appreciation
rights and direct stock issuances under the Plan per calendar year, (iii) the
number and/or class of securities for which grants are subsequently to be made
under the Automatic Option Grant Program to new and continuing non-employee
Board members, (iv) the number and/or class of securities and the exercise price
per share in effect under each outstanding option under the Plan and (v) the
number and/or class of securities and price per share in effect under each
outstanding option incorporated into this Plan from the Predecessor Plan. Such
adjustments to the outstanding options are to be effected in a manner which
shall preclude the enlargement or dilution of rights and benefits under such
options. The adjustments determined by the Plan Administrator shall be final,
binding and conclusive.

                                       5.

<PAGE>   6

                                   ARTICLE TWO

                       DISCRETIONARY OPTION GRANT PROGRAM


       I.      OPTION TERMS

               Each option shall be evidenced by one or more documents in the
form approved by the Plan Administrator; provided, however, that each such
document shall comply with the terms specified below. Each document evidencing
an Incentive Option shall, in addition, be subject to the provisions of the Plan
applicable to such options.

               A.     EXERCISE PRICE.

                        1. The exercise price per share shall be fixed by the
Plan Administrator but shall not be less than one hundred percent (100%) of the
Fair Market Value per share of Common Stock on the option grant date.

                        2. The exercise price shall become immediately due upon
exercise of the option and shall, subject to the provisions of Section I of
Article Six and the documents evidencing the option, be payable in one or more
of the forms specified below:

                           (i) cash or check made payable to the Corporation,

                          (ii) shares of Common Stock held for the requisite
        period necessary to avoid a charge to the Corporation's earnings for
        financial reporting purposes and valued at Fair Market Value on the
        Exercise Date, or

                         (iii) to the extent the option is exercised for vested
        shares, through a special sale and remittance procedure pursuant to
        which the Optionee shall concurrently provide irrevocable instructions
        to (a) a Corporation-designated brokerage firm to effect the immediate
        sale of the purchased shares and remit to the Corporation, out of the
        sale proceeds available on the settlement date, sufficient funds to
        cover the aggregate exercise price payable for the purchased shares plus
        all applicable Federal, state and local income and employment taxes
        required to be withheld by the Corporation by reason of such exercise
        and (b) the Corporation to deliver the certificates for the purchased
        shares directly to such brokerage firm in order to complete the sale.

               Except to the extent such sale and remittance procedure is
utilized, payment of the exercise price for the purchased shares must be made on
the Exercise Date.


                                       6.

<PAGE>   7



               B. EXERCISE AND TERM OF OPTIONS. Each option shall be exercisable
at such time or times, during such period and for such number of shares as shall
be determined by the Plan Administrator and set forth in the documents
evidencing the option. However, no option shall have a term in excess of ten
(10) years measured from the option grant date.

               C.     EFFECT OF TERMINATION OF SERVICE.

                        1. The following provisions shall govern the exercise of
any options held by the Optionee at the time of cessation of Service or death:

                           (i) Any option outstanding at the time of the
        Optionee's cessation of Service for any reason shall remain exercisable
        for such period of time thereafter as shall be determined by the Plan
        Administrator and set forth in the documents evidencing the option, but
        no such option shall be exercisable after the expiration of the option
        term.

                          (ii) Any option exercisable in whole or in part by the
        Optionee at the time of death may be subsequently exercised by the
        personal representative of the Optionee's estate or by the person or
        persons to whom the option is transferred pursuant to the Optionee's
        will or in accordance with the laws of descent and distribution.

                         (iii) Should the Optionee's Service be terminated for
        Misconduct, then all outstanding options held by the Optionee shall
        terminate immediately and cease to be outstanding.

                          (iv) During the applicable post-Service exercise
        period, the option may not be exercised in the aggregate for more than
        the number of vested shares for which the option is exercisable on the
        date of the Optionee's cessation of Service. Upon the expiration of the
        applicable exercise period or (if earlier) upon the expiration of the
        option term, the option shall terminate and cease to be outstanding for
        any vested shares for which the option has not been exercised. However,
        the option shall, immediately upon the Optionee's cessation of Service,
        terminate and cease to be outstanding to the extent the option is not
        otherwise at that time exercisable for vested shares.

                      2. The Plan Administrator shall have complete discretion,
exercisable either at the time an option is granted or at any time while the
option remains outstanding, to:

                           (i) extend the period of time for which the option is
        to remain exercisable following the Optionee's cessation of Service from
        the limited exercise period otherwise in effect for that option to such
        greater period of time as the Plan Administrator shall deem appropriate,
        but in no event beyond the expiration of the option term, and/or


                                       7.

<PAGE>   8

                          (ii) permit the option to be exercised, during the
        applicable post-Service exercise period, not only with respect to the
        number of vested shares of Common Stock for which such option is
        exercisable at the time of the Optionee's cessation of Service but also
        with respect to one or more additional installments in which the
        Optionee would have vested had the Optionee continued in Service.

               D. STOCKHOLDER RIGHTS. The holder of an option shall have no
stockholder rights with respect to the shares subject to the option until such
person shall have exercised the option, paid the exercise price and become a
holder of record of the purchased shares.

               E. REPURCHASE RIGHTS. The Plan Administrator shall have the
discretion to grant options which are exercisable for unvested shares of Common
Stock. Should the Optionee cease Service while holding such unvested shares, the
Corporation shall have the right to repurchase, at the exercise price paid per
share, any or all of those unvested shares. The terms upon which such repurchase
right shall be exercisable (including the period and procedure for exercise and
the appropriate vesting schedule for the purchased shares) shall be established
by the Plan Administrator and set forth in the document evidencing such
repurchase right.

               F. LIMITED TRANSFERABILITY OF OPTIONS. During the lifetime of the
Optionee, Incentive Options shall be exercisable only by the Optionee and shall
not be assignable or transferable other than by will or by the laws of descent
and distribution following the Optionee's death. Non-Statutory Options shall be
subject to the same restrictions, except that a Non-Statutory Option may, in
connection with the Optionee's estate plan, be assigned in whole or in part
during the Optionee's lifetime to one or more members of the Optionee's
immediate family or to a trust established exclusively for one or more such
family members. The assigned portion may only be exercised by the person or
persons who acquire a proprietary interest in the option pursuant to the
assignment. The terms applicable to the assigned portion shall be the same as
those in effect for the option immediately prior to such assignment and shall be
set forth in such documents issued to the assignee as the Plan Administrator may
deem appropriate.

     II.       INCENTIVE OPTIONS

               The terms specified below shall be applicable to all Incentive
Options. Except as modified by the provisions of this Section II, all the
provisions of Articles One, Two and Seven shall be applicable to Incentive
Options. Options which are specifically designated as Non-Statutory Options when
issued under the Plan shall not be subject to the terms of this Section II.

               A. ELIGIBILITY. Incentive Options may only be granted to
Employees.

               B. EXERCISE PRICE. The exercise price per share shall not be less
than one hundred percent (100%) of the Fair Market Value per share of Common
Stock on the option grant date.


                                       8.

<PAGE>   9

               C. DOLLAR LIMITATION. The aggregate Fair Market Value of the
shares of Common Stock (determined as of the respective date or dates of grant)
for which one or more options granted to any Employee under the Plan (or any
other option plan of the Corporation or any Parent or Subsidiary) may for the
first time become exercisable as Incentive Options during any one calendar year
shall not exceed the sum of One Hundred Thousand Dollars ($100,000). To the
extent the Employee holds two (2) or more such options which become exercisable
for the first time in the same calendar year, the foregoing limitation on the
exercisability of such options as Incentive Options shall be applied on the
basis of the order in which such options are granted.

               D. 10% STOCKHOLDER. If any Employee to whom an Incentive Option
is granted is a 10% Stockholder, then the exercise price per share shall not be
less than one hundred ten percent (110%) of the Fair Market Value per share of
Common Stock on the option grant date, and the option term shall not exceed five
(5) years measured from the option grant date.

     III.      CORPORATE TRANSACTION/CHANGE IN CONTROL

               A. In the event of any Corporate Transaction, each outstanding
option shall automatically accelerate so that each such option shall,
immediately prior to the effective date of the Corporate Transaction, become
fully exercisable with respect to the total number of shares of Common Stock at
the time subject to such option and may be exercised for any or all of those
shares as fully vested shares of Common Stock. However, an outstanding option
shall NOT become exercisable on such an accelerated basis if and to the extent:
(i) such option is, in connection with the Corporate Transaction, to be assumed
by the successor corporation (or parent thereof) or (ii) such option is to be
replaced with a cash incentive program of the successor corporation which
preserves the spread existing at the time of the Corporate Transaction on any
shares for which the option is not otherwise at that time exercisable and
provides for subsequent payout in accordance with the same exercise/vesting
schedule applicable to those option shares or (iii) the acceleration of such
option is subject to other limitations imposed by the Plan Administrator at the
time of the option grant.

               B. All outstanding repurchase rights shall automatically
terminate, and the shares of Common Stock subject to those terminated rights
shall immediately vest in full, in the event of any Corporate Transaction,
except to the extent: (i) those repurchase rights are to be assigned to the
successor corporation (or parent thereof) in connection with such Corporate
Transaction or (ii) such accelerated vesting is precluded by other limitations
imposed by the Plan Administrator at the time the repurchase right is issued.

               C. Immediately following the consummation of the Corporate
Transaction, all outstanding options shall terminate and cease to be
outstanding, except to the extent assumed by the successor corporation (or
parent thereof).


                                       9.

<PAGE>   10

               D. Each option which is assumed in connection with a Corporate
Transaction shall be appropriately adjusted, immediately after such Corporate
Transaction, to apply to the number and class of securities which would have
been issuable to the Optionee in consummation of such Corporate Transaction had
the option been exercised immediately prior to such Corporate Transaction.
Appropriate adjustments to reflect such Corporate Transaction shall also be made
to (i) the exercise price payable per share under each outstanding option,
provided the aggregate exercise price payable for such securities shall remain
the same, (ii) the maximum number and/or class of securities available for
issuance over the remaining term of the Plan and (iii) the maximum number and/or
class of securities for which any one person may be granted stock options,
separately exercisable stock appreciation rights and direct stock issuances
under the Plan per calendar year.

               E. The Plan Administrator shall have the discretionary authority
to provide for the automatic acceleration of one or more outstanding options
under the Discretionary Option Grant Program upon the occurrence of a Corporate
Transaction, whether or not those options are to be assumed in the Corporate
Transaction, so that each such option shall, immediately prior to the effect
date of such Corporate Transaction, become fully exercisable with respect to the
total number of shares of Common Stock at the time subject to that option and
may be exercised for any or all of those shares as fully vested shares of Common
Stock. In addition, the Plan Administrator shall have the discretionary
authority to structure one or more of the Corporation's repurchase rights under
the Discretionary Option Grant Program so that those rights shall not be
assignable in connection with such Corporate Transaction and shall accordingly
terminate upon the consummation of such Corporate Transaction, and the shares
subject to those terminated rights shall thereupon vest in full.

               F. The Plan Administrator shall have full power and authority,
exercisable either at the time the option is granted or at any time while the
option remains outstanding, to provide for the automatic acceleration of one or
more outstanding options under the Discretionary Option Grant Program in the
event the Optionee's Service is subsequently terminated by reason of an
Involuntary Termination within a designated period (not to exceed eighteen (18)
months) following the effective date of any Corporate Transaction in which those
options are assumed and do not otherwise accelerate. Any options so accelerated
shall remain exercisable for fully vested shares until the earlier of (i) the
expiration of the option term or (ii) the expiration of the one (1) year period
measured from the effective date of the Involuntary Termination. In addition,
the Plan Administrator may provide that one or more of the Corporation's
outstanding repurchase rights with respect to shares held by the Optionee at the
time of such Involuntary Termination shall immediately terminate, and the shares
subject to those terminated repurchase rights shall accordingly vest in full.

               G. The Plan Administrator shall have the discretionary authority
to provide for the automatic acceleration of one or more outstanding options
under the Discretionary Option Grant Program upon the occurrence of a Change in
Control so that each such option shall, immediately prior to the effect date of
such Change in Control, become fully exercisable with respect to the total
number of shares of Common Stock at the time subject to that option and may



                                      10.

<PAGE>   11

be exercised for any or all of those shares as fully vested shares of Common
Stock. In addition, the Plan Administrator shall have the discretionary
authority to structure one or more of the Corporation's repurchase rights under
the Discretionary Option Grant Program so that those rights shall terminate
automatically upon the consummation of such Change in Control, and the shares
subject to those terminated rights shall thereupon vest in full. Alternatively,
the Plan Administrator may condition the automatic acceleration of one or more
outstanding options under the Discretionary Option Grant Program and the
termination of one or more of the Corporation's outstanding repurchase rights
under such program upon the subsequent termination of the Optionee's Service by
reason of an Involuntary Termination within a designated period (not to exceed
eighteen (18) months) following the effective date of such Change in Control.
Each option so accelerated shall remain exercisable for fully vested shares
until the earlier of (i) the expiration of the option term or (ii) the
expiration of the one (1) year period measured from the effective date of
Optionee's cessation of Service.

               H. The portion of any Incentive Option accelerated in connection
with a Corporate Transaction or Change in Control shall remain exercisable as an
Incentive Option only to the extent the applicable One Hundred Thousand Dollar
($100,000) limitation is not exceeded. To the extent such dollar limitation is
exceeded, the accelerated portion of such option shall be exercisable as a
Nonstatutory Option under the Federal tax laws.

               I. The outstanding options shall in no way affect the right of
the Corporation to adjust, reclassify, reorganize or otherwise change its
capital or business structure or to merge, consolidate, dissolve, liquidate or
sell or transfer all or any part of its business or assets.

      IV.      CANCELLATION AND REGRANT OF OPTIONS

               The Plan Administrator shall have the authority to effect, at any
time and from time to time, with the consent of the affected option holders, the
cancellation of any or all outstanding options under the Discretionary Option
Grant Program (including outstanding options incorporated from the Predecessor
Plan) and to grant in substitution new options covering the same or different
number of shares of Common Stock but with an exercise price per share based on
the Fair Market Value per share of Common Stock on the new grant date.

       V.      STOCK APPRECIATION RIGHTS

               A. The Plan Administrator shall have full power and authority to
grant to selected Optionees tandem stock appreciation rights and/or limited
stock appreciation rights.

               B. The following terms shall govern the grant and exercise of
tandem stock appreciation rights:

                           (i) One or more Optionees may be granted the right,
        exercisable upon such terms as the Plan Administrator may establish, to
        elect between the exercise of the underlying option for shares of Common
        Stock and

                                       11.

<PAGE>   12


        the surrender of that option in exchange for a distribution from the
        Corporation in an amount equal to the excess of (a) the Fair Market
        Value (on the option surrender date) of the number of shares in which
        the Optionee is at the time vested under the surrendered option (or
        surrendered portion thereof) over (b) the aggregate exercise price
        payable for such shares.

                          (ii) No such option surrender shall be effective
        unless it is approved by the Plan Administrator, either at the time of
        the actual option surrender or at any earlier time. If the surrender is
        so approved, then the distribution to which the Optionee shall be
        entitled may be made in shares of Common Stock valued at Fair Market
        Value on the option surrender date, in cash, or partly in shares and
        partly in cash, as the Plan Administrator shall in its sole discretion
        deem appropriate.

                         (iii) If the surrender of an option is not approved by
        the Plan Administrator, then the Optionee shall retain whatever rights
        the Optionee had under the surrendered option (or surrendered portion
        thereof) on the option surrender date and may exercise such rights at
        any time prior to the later of (a) five (5) business days after the
        receipt of the rejection notice or (b) the last day on which the option
        is otherwise exercisable in accordance with the terms of the documents
        evidencing such option, but in no event may such rights be exercised
        more than ten (10) years after the option grant date.

               C. The following terms shall govern the grant and exercise of
limited stock appreciation rights:

                           (i) One or more Section 16 Insiders may be granted
        limited stock appreciation rights with respect to their outstanding
        options.

                          (ii) Upon the occurrence of a Hostile Take-Over, each
        individual holding one or more options with such a limited stock
        appreciation right shall have the unconditional right (exercisable for a
        thirty (30)-day period following such Hostile Take-Over) to surrender
        each such option to the Corporation, to the extent the option is at the
        time exercisable for vested shares of Common Stock. In return for the
        surrendered option, the Optionee shall receive a cash distribution from
        the Corporation in an amount equal to the excess of (A) the Take-Over
        Price of the shares of Common Stock which are at the time vested under
        each surrendered option (or surrendered portion thereof) over (B) the
        aggregate exercise price payable for such shares. Such cash distribution
        shall be paid within five (5) days following the option surrender date.


                                       12.

<PAGE>   13

                         (iii) The grant of such limited stock appreciation
        right shall automatically constitute pre-approval by the Plan
        Administrator of any subsequent exercise of that right in accordance
        with the terms of this Paragraph C. Accordingly, no further approval of
        the Plan Administrator or the Board shall be required at the time of the
        actual option surrender and cash distribution.

                          (iv) The balance of the option (if any) shall remain
        outstanding and exercisable in accordance with the documents evidencing
        such option.

                                       13.

<PAGE>   14

                                  ARTICLE THREE

                     SALARY INVESTMENT OPTION GRANT PROGRAM

       I.      OPTION GRANTS

               The Primary Committee shall have the sole and exclusive authority
to determine the calendar year or years (if any) for which the Salary Investment
Option Grant Program is to be in effect and to select the Section 16 Insiders
and other highly compensated Employees eligible to participate in the Salary
Investment Option Grant Program for those calendar year or years. Each selected
individual who elects to participate in the Salary Investment Option Grant
Program must, prior to the start of each calendar year of participation, file
with the Plan Administrator (or its designate) an irrevocable authorization
directing the Corporation to reduce his or her base salary for that calendar
year by an amount not less than Ten Thousand Dollars ($10,000.00) nor more than
Fifty Thousand Dollars ($50,000.00). The Primary Committee shall have complete
discretion to determine whether to approve the filed authorization in whole or
in part. To the extent the Primary Committee approves the authorization, the
individual who filed that authorization shall automatically be granted an option
under the Salary Investment Grant Program on the first trading day in January of
the calendar year for which the salary reduction is to be in effect.

      II.      OPTION TERMS

               Each option shall be a Non-Statutory Option evidenced by one or
more documents in the form approved by the Plan Administrator; provided,
however, that each such document shall comply with the terms specified below.

               A.     EXERCISE PRICE.

                        1. The exercise price per share shall be thirty-three
and one-third percent (33-1/3%) of the Fair Market Value per share of Common
Stock on the option grant date.

                        2. The exercise price shall become immediately due upon
exercise of the option and shall be payable in one or more of the alternative
forms authorized under the Discretionary Option Grant Program. Except to the
extent the sale and remittance procedure specified thereunder is utilized,
payment of the exercise price for the purchased shares must be made on the
Exercise Date.


                                       14.

<PAGE>   15

               B. NUMBER OF OPTION SHARES. The number of shares of Common Stock
subject to the option shall be determined pursuant to the following formula
(rounded down to the nearest whole number):

                      X = A / (B x 66-2/3%), where

                      X is the number of option shares,

                      A is the dollar amount of the approved reduction in the
                      Optionee's base salary for the calendar year, and

                      B is the Fair Market Value per share of Common Stock on
                      the option grant date.

               C. EXERCISE AND TERM OF OPTIONS. The option shall become
exercisable in a series of twelve (12) successive equal monthly installments
upon the Optionee's completion of each calendar month of Service in the calendar
year for which the salary reduction is in effect. Each option shall have a
maximum term of ten (10) years measured from the option grant date.

               D. EFFECT OF TERMINATION OF SERVICE. Should the Optionee cease
Service for any reason while holding one or more options under this Article
Three, then each such option shall remain exercisable, for any or all of the
shares for which the option is exercisable at the time of such cessation of
Service, until the earlier of (i) the expiration of the ten (10)-year option
term or (ii) the expiration of the three (3)-year period measured from the date
of such cessation of Service. Should the Optionee die while holding one or more
options under this Article Three, then each such option may be exercised, for
any or all of the shares for which the option is exercisable at the time of the
Optionee's cessation of Service (less any shares subsequently purchased by
Optionee prior to death), by the personal representative of the Optionee's
estate or by the person or persons to whom the option is transferred pursuant to
the Optionee's will or in accordance with the laws of descent and distribution.
Such right of exercise shall lapse, and the option shall terminate, upon the
earlier of (i) the expiration of the ten (10)-year option term or (ii) the three
(3)-year period measured from the date of the Optionee's cessation of Service.
However, the option shall, immediately upon the Optionee's cessation of Service
for any reason, terminate and cease to remain outstanding with respect to any
and all shares of Common Stock for which the option is not otherwise at that
time exercisable.

     III.      CORPORATE TRANSACTION/CHANGE IN CONTROL/HOSTILE TAKE-
               OVER

               A. In the event of any Corporate Transaction while the Optionee
remains in Service, each outstanding option held by such Optionee under this
Salary Investment Option Grant Program shall automatically accelerate so that
each such option shall, immediately prior to the effective date of the Corporate
Transaction, become fully exercisable with respect to the total number of shares
of Common Stock at the time subject to such option and may be exercised


                                       15.

<PAGE>   16

for any or all of those shares as fully-vested shares of Common Stock. Each such
outstanding option shall be assumed by the successor corporation (or parent
thereof) in the Corporate Transaction and shall remain exercisable for the
fully-vested shares until the earlier of (i) the expiration of the ten (10)-year
option term or (ii) the expiration of the three (3)-year period measured from
the date of the Optionee's cessation of Service.

               B. In the event of a Change in Control while the Optionee remains
in Service, each outstanding option held by such Optionee under this Salary
Investment Option Grant Program shall automatically accelerate so that each such
option shall immediately become fully exercisable with respect to the total
number of shares of Common Stock at the time subject to such option and may be
exercised for any or all of those shares as fully-vested shares of Common Stock.
The option shall remain so exercisable until the earlier of (i) the expiration
of the ten (10)-year option term, (ii) the expiration of the three (3)-year
period measured from the date of the Optionee's cessation of Service or (iii)
the surrender of the option in connection with a Hostile Take-Over.

               C. Upon the occurrence of a Hostile Take-Over, the Optionee shall
have a thirty (30)-day period in which to surrender to the Corporation each
outstanding option granted him or her under the Salary Investment Option Grant
Program. The Optionee shall in return be entitled to a cash distribution from
the Corporation in an amount equal to the excess of (i) the Take-Over Price of
the shares of Common Stock at the time subject to the surrendered option
(whether or not the Optionee is otherwise at the time vested in those shares)
over (ii) the aggregate exercise price payable for such shares. Such cash
distribution shall be paid within five (5) days following the surrender of the
option to the Corporation. The Primary Committee shall, at the time the option
with such limited stock appreciation right is granted under the Salary
Investment Option Grant Program, pre-approve any subsequent exercise of that
right in accordance with the terms of this Paragraph C. Accordingly, no further
approval of the Primary Committee or the Board shall be required at the time of
the actual option surrender and cash distribution.

               D. The grant of options under the Salary Investment Option Grant
Program shall in no way affect the right of the Corporation to adjust,
reclassify, reorganize or otherwise change its capital or business structure or
to merge, consolidate, dissolve, liquidate or sell or transfer all or any part
of its business or assets.

     III.      REMAINING TERMS

               The remaining terms of each option granted under the Salary
Investment Option Grant Program shall be the same as the terms in effect for
option grants made under the Discretionary Option Grant Program.


                                       16.

<PAGE>   17

                                  ARTICLE FOUR

                             STOCK ISSUANCE PROGRAM

       I.      STOCK ISSUANCE TERMS

               Shares of Common Stock may be issued under the Stock Issuance
Program through direct and immediate issuances without any intervening option
grants. Each such stock issuance shall be evidenced by a Stock Issuance
Agreement which complies with the terms specified below.

               A.     PURCHASE PRICE.

                        1. The purchase price per share shall be fixed by the
Plan Administrator, but shall not be less than one hundred percent (100%) of the
Fair Market Value per share of Common Stock on the issuance date.

                        2. Subject to the provisions of Section I of Article
Seven, shares of Common Stock may be issued under the Stock Issuance Program for
any of the following items of consideration which the Plan Administrator may
deem appropriate in each individual instance:

                                (i) cash or check made payable to the
                        Corporation, or

                                (ii) past services rendered to the Corporation
                        (or any Parent or Subsidiary).

               B.     VESTING PROVISIONS.

                        1. Shares of Common Stock issued under the Stock
Issuance Program may, in the discretion of the Plan Administrator, be fully and
immediately vested upon issuance or may vest in one or more installments over
the Participant's period of Service or upon attainment of specified performance
objectives. The elements of the vesting schedule applicable to any unvested
shares of Common Stock issued under the Stock Issuance Program, namely:

                                (i) the Service period to be completed by the
                        Participant or the performance objectives to be
                        attained,

                                (ii) the number of installments in which the
                        shares are to vest,

                                (iii) the interval or intervals (if any) which
                        are to lapse between installments, and



                                       17.

<PAGE>   18


                                (iv) the effect which death, Permanent
                        Disability or other event designated by the Plan
                        Administrator is to have upon the vesting schedule,

shall be determined by the Plan Administrator and incorporated into the Stock
Issuance Agreement.

                       2. Any new, substituted or additional securities or
other property (including money paid other than as a regular cash dividend)
which the Participant may have the right to receive with respect to the
Participant's unvested shares of Common Stock by reason of any stock dividend,
stock split, recapitalization, combination of shares, exchange of shares or
other change affecting the outstanding Common Stock as a class without the
Corporation's receipt of consideration shall be issued subject to (i) the same
vesting requirements applicable to the Participant's unvested shares of Common
Stock and (ii) such escrow arrangements as the Plan Administrator shall deem
appropriate.

                      3. The Participant shall have full stockholder rights with
respect to any shares of Common Stock issued to the Participant under the Stock
Issuance Program, whether or not the Participant's interest in those shares is
vested. Accordingly, the Participant shall have the right to vote such shares
and to receive any regular cash dividends paid on such shares.

                      4. Should the Participant cease to remain in Service while
holding one or more unvested shares of Common Stock issued under the Stock
Issuance Program or should the performance objectives not be attained with
respect to one or more such unvested shares of Common Stock, then those shares
shall be immediately surrendered to the Corporation for cancellation, and the
Participant shall have no further stockholder rights with respect to those
shares. To the extent the surrendered shares were previously issued to the
Participant for consideration paid in cash or cash equivalent (including the
Participant's purchase-money indebtedness), the Corporation shall repay to the
Participant the cash consideration paid for the surrendered shares and shall
cancel the unpaid principal balance of any outstanding purchase-money note of
the Participant attributable to the surrendered shares.

                      5. The Plan Administrator may in its discretion waive the
surrender and cancellation of one or more unvested shares of Common Stock which
would otherwise occur upon the cessation of the Participant's Service or the
non-attainment of the performance objectives applicable to those shares. Such
waiver shall result in the immediate vesting of the Participant's interest in
the shares of Common Stock as to which the waiver applies. Such waiver may be
effected at any time, whether before or after the Participant's cessation of
Service or the attainment or non-attainment of the applicable performance
objectives.


                                       18.

<PAGE>   19



      II.      CORPORATE TRANSACTION/CHANGE IN CONTROL

               A. All of the Corporation's outstanding repurchase rights under
the Stock Issuance Program shall terminate automatically, and all the shares of
Common Stock subject to those terminated rights shall immediately vest in full,
in the event of any Corporate Transaction, except to the extent (i) those
repurchase rights are to be assigned to the successor corporation (or parent
thereof) in connection with such Corporate Transaction or (ii) such accelerated
vesting is precluded by other limitations imposed in the Stock Issuance
Agreement.

               B. The Plan Administrator shall have the discretionary authority,
exercisable either at the time the unvested shares are issued or any time while
the Corporation's repurchase rights remain outstanding under the Stock Issuance
Program, to provide that those rights shall automatically terminate in whole or
in part, and the shares of Common Stock subject to those terminated rights shall
immediately vest, in the event the Participant's Service should subsequently
terminate by reason of an Involuntary Termination within a designated period
(not to exceed eighteen (18) months) following the effective date of any
Corporate Transaction in which those repurchase rights are assigned to the
successor corporation (or parent thereof).

               C. The Plan Administrator shall have the discretionary authority,
exercisable either at the time the unvested shares are issued or any time while
the Corporation's repurchase rights remain outstanding under the Stock Issuance
Program, to provide that those rights shall automatically terminate in whole or
in part, and the shares of Common Stock subject to those terminated rights shall
immediately vest, in the event the Participant's Service should subsequently
terminate by reason of an Involuntary Termination within a designated period
(not to exceed eighteen (18) months) following the effective date of any Change
in Control.

     III.      SHARE ESCROW/LEGENDS

               Unvested shares may, in the Plan Administrator's discretion, be
held in escrow by the Corporation until the Participant's interest in such
shares vests or may be issued directly to the Participant with restrictive
legends on the certificates evidencing those unvested shares.

                                       19.

<PAGE>   20

                                  ARTICLE FIVE

                         AUTOMATIC OPTION GRANT PROGRAM

       I.      OPTION TERMS

               A. GRANT DATES. Option grants shall be made on the dates
specified below:

                      1. Each individual who is first elected or appointed as a
non-employee Board member at any time after the Underwriting Date shall
automatically be granted, on the date of such initial election or appointment, a
Non-Statutory Option to purchase 15,000 shares of Common Stock, provided that
individual has not previously been in the employ of the Corporation or any
Parent or Subsidiary.

                      2. On the date of each Annual Stockholders Meeting held
after the Underwriting Date, each individual who is to continue to serve as an
Eligible Director, whether or not that individual is standing for re-election to
the Board at that particular Annual Meeting, shall automatically be granted a
Non-Statutory Option to purchase 5,000 shares of Common Stock, provided such
individual has served as a non-employee Board member for at least six (6)
months. There shall be no limit on the number of such 5,000-share option grants
any one Eligible Director may receive over his or her period of Board service,
and non-employee Board members who have previously been in the employ of the
Corporation (or any Parent or Subsidiary) or who have otherwise received a stock
option grant from the Corporation prior to the Underwriting Date shall be
eligible to receive one or more such annual option grants over their period of
continued Board service.

               B. EXERCISE PRICE.

                      1. The exercise price per share shall be equal to one 
hundred percent (100%) of the Fair Market Value per share of Common Stock on the
option grant date.

                      2. The exercise price shall be payable in one or more of
the alternative forms authorized under the Discretionary Option Grant Program.
Except to the extent the sale and remittance procedure specified thereunder is
utilized, payment of the exercise price for the purchased shares must be made on
the Exercise Date.

               C. OPTION TERM. Each option shall have a term of ten (10) years
measured from the option grant date.

               D. EXERCISE AND VESTING OF OPTIONS. Each option shall be
immediately exercisable for any or all of the option shares. However, any shares
purchased under the option shall be subject to repurchase by the Corporation, at
the exercise price paid per share, upon the Optionee's cessation of Board
service prior to vesting in those shares. Each initial 15,000-share grant shall
vest, and the Corporation's repurchase right shall lapse, in a series of four
(4)


                                       20.

<PAGE>   21



successive equal annual installments over the Optionee's period of continued
service as a Board member, with the first such installment to vest upon the
Optionee's completion of one (1) year of Board service measured from the option
grant date. Each annual 5,000-share automatic option shall vest, and the
Corporation's repurchase right shall lapse, in a series of two (2) successive
equal annual installments over the Optionee's period of continued service as a
Board member, with the first such installment to vest upon the Optionee's
completion of one (1) year of Board service measured from the option grant date.

               E. TERMINATION OF BOARD SERVICE. The following provisions shall
govern the exercise of any options held by the Optionee at the time the Optionee
ceases to serve as a Board member:

                           (i) The Optionee (or, in the event of Optionee's
        death, the personal representative of the Optionee's estate or the
        person or persons to whom the option is transferred pursuant to the
        Optionee's will or in accordance with the laws of descent and
        distribution) shall have a twelve (12)-month period following the date
        of such cessation of Board service in which to exercise each such
        option.

                          (ii) During the twelve (12)-month exercise period, the
        option may not be exercised in the aggregate for more than the number of
        vested shares of Common Stock for which the option is exercisable at the
        time of the Optionee's cessation of Board service.

                         (iii) Should the Optionee cease to serve as a Board
        member by reason of death or Permanent Disability, then all shares at
        the time subject to the option shall immediately vest so that such
        option may, during the twelve (12)-month exercise period following such
        cessation of Board service, be exercised for all or any portion of those
        shares as fully-vested shares of Common Stock.

                          (iv) In no event shall the option remain exercisable
        after the expiration of the option term. Upon the expiration of the
        twelve (12)-month exercise period or (if earlier) upon the expiration of
        the option term, the option shall terminate and cease to be outstanding
        for any vested shares for which the option has not been exercised.
        However, the option shall, immediately upon the Optionee's cessation of
        Board service for any reason other than death or Permanent Disability,
        terminate and cease to be outstanding to the extent the option is not
        otherwise at that time exercisable for vested shares.


                                       21.

<PAGE>   22

      II.      CORPORATE TRANSACTION/CHANGE IN CONTROL/HOSTILE TAKE-
               OVER

               A. In the event of any Corporate Transaction, the shares of
Common Stock at the time subject to each outstanding option but not otherwise
vested shall automatically vest in full so that each such option shall,
immediately prior to the effective date of the Corporate Transaction, become
fully exercisable for all of the shares of Common Stock at the time subject to
such option and may be exercised for all or any portion of those shares as
fully-vested shares of Common Stock. Immediately following the consummation of
the Corporate Transaction, each automatic option grant shall terminate and cease
to be outstanding, except to the extent assumed by the successor corporation (or
parent thereof).

               B. In connection with any Change in Control, the shares of Common
Stock at the time subject to each outstanding option but not otherwise vested
shall automatically vest in full so that each such option shall, immediately
prior to the effective date of the Change in Control, become fully exercisable
for all of the shares of Common Stock at the time subject to such option and may
be exercised for all or any portion of those shares as fully-vested shares of
Common Stock. Each such option shall remain exercisable for such fully-vested
option shares until the expiration or sooner termination of the option term or
the surrender of the option in connection with a Hostile Take-Over.

               C. All outstanding repurchase rights shall automatically
terminate, and the shares of Common Stock subject to those terminated rights
shall immediately vest in full, in the event of any Corporate Transaction or
Change in Control.

               D. Upon the occurrence of a Hostile Take-Over, the Optionee shall
have a thirty (30)-day period in which to surrender to the Corporation each of
his or her outstanding automatic option grants. The Optionee shall in return be
entitled to a cash distribution from the Corporation in an amount equal to the
excess of (i) the Take-Over Price of the shares of Common Stock at the time
subject to each surrendered option (whether or not the Optionee is otherwise at
the time vested in those shares) over (ii) the aggregate exercise price payable
for such shares. Such cash distribution shall be paid within five (5) days
following the surrender of the option to the Corporation. No approval or consent
of the Board or any Plan Administrator shall be required in connection with such
option surrender and cash distribution.

               E. Each option which is assumed in connection with a Corporate
Transaction shall be appropriately adjusted, immediately after such Corporate
Transaction, to apply to the number and class of securities which would have
been issuable to the Optionee in consummation of such Corporate Transaction had
the option been exercised immediately prior to such Corporate Transaction.
Appropriate adjustments shall also be made to the exercise price payable per
share under each outstanding option, provided the aggregate exercise price
payable for such securities shall remain the same.


                                       22.

<PAGE>   23

               F. The grant of options under the Automatic Option Grant Program
shall in no way affect the right of the Corporation to adjust, reclassify,
reorganize or otherwise change its capital or business structure or to merge,
consolidate, dissolve, liquidate or sell or transfer all or any part of its
business or assets.

     III.      REMAINING TERMS

               The remaining terms of each option granted under the Automatic
Option Grant Program shall be the same as the terms in effect for option grants
made under the Discretionary Option Grant Program.

                                       23.

<PAGE>   24

                                   ARTICLE SIX

                        DIRECTOR FEE OPTION GRANT PROGRAM

       I.      OPTION GRANTS

               Each non-employee Board member may elect to apply all or any
portion of the annual retainer fee otherwise payable in cash for his or her
service on the Board to the acquisition of a special option grant under this
Director Fee Option Grant Program. Such election must be filed with the
Corporation's Chief Financial Officer prior to first day of the calendar year
for which the annual retainer fee which is the subject of that election is
otherwise payable. Each non-employee Board member who files such a timely
election shall automatically be granted an option under this Director Fee Option
Grant Program on the first trading day in January in the calendar year for which
the annual retainer fee which is the subject of that election would otherwise be
payable in cash.

      II.      OPTION TERMS

               Each option shall be a Non-Statutory Option governed by the terms
and conditions specified below.

               A.     EXERCISE PRICE.

                      1. The exercise price per share shall be thirty-three and
one-third percent (33-1/3%) of the Fair Market Value per share of Common Stock
on the option grant date.

                      2. The exercise price shall become immediately due upon
exercise of the option and shall be payable in one or more of the alternative
forms authorized under the Discretionary Option Grant Program. Except to the
extent the sale and remittance procedure specified thereunder is utilized,
payment of the exercise price for the purchased shares must be made on the
Exercise Date.

               B. NUMBER OF OPTION SHARES. The number of shares of Common Stock
subject to the option shall be determined pursuant to the following formula
(rounded down to the nearest whole number):

                      X = A / (B x 66-2/3%), where

                      X is the number of option shares,

                      A is the portion of the annual retainer fee subject to the
                      non-employee Board member's election, and


                                       24.

<PAGE>   25

                      B is the Fair Market Value per share of Common Stock on
                      the option grant date.

               C. EXERCISE AND TERM OF OPTIONS. The option shall become
exercisable in a series of twelve (12) equal monthly installments upon the
Optionee's completion of each month of Board service over the twelve (12)-month
period measured from the grant date. Each option shall have a maximum term of
ten (10) years measured from the option grant date.

               D. TERMINATION OF BOARD SERVICE. Should the Optionee cease Board
service for any reason (other than death or Permanent Disability) while holding
one or more options under this Director Fee Option Grant Program, then each such
option shall remain exercisable, for any or all of the shares for which the
option is exercisable at the time of such cessation of Board service, until the
earlier of (i) the expiration of the ten (10)-year option term or (ii) the
expiration of the three (3)-year period measured from the date of such cessation
of Board service. However, each option held by the Optionee under this Director
Fee Option Grant Program at the time of his or her cessation of Board service
shall immediately terminate and cease to remain outstanding with respect to any
and all shares of Common Stock for which the option is not otherwise at that
time exercisable.

               E. DEATH OR PERMANENT DISABILITY. Should the Optionee's service
as a Board member cease by reason of death or Permanent Disability, then each
option held by such Optionee under this Director Fee Option Grant Program shall
immediately become exercisable for all the shares of Common Stock at the time
subject to that option, and the option may be exercised for any or all of those
shares as fully-vested shares until the earlier of (i) the expiration of the ten
(10)-year option term or (ii) the expiration of the three (3)-year period
measured from the date of such cessation of Board service.

               Should the Optionee die after cessation of Board service but
while holding one or more options under this Director Fee Option Grant Program,
then each such option may be exercised, for any or all of the shares for which
the option is exercisable at the time of the Optionee's cessation of Board
service (less any shares subsequently purchased by Optionee prior to death), by
the personal representative of the Optionee's estate or by the person or persons
to whom the option is transferred pursuant to the Optionee's will or in
accordance with the laws of descent and distribution. Such right of exercise
shall lapse, and the option shall terminate, upon the earlier of (i) the
expiration of the ten (10)-year option term or (ii) the three (3)-year period
measured from the date of the Optionee's cessation of Board service.

     III.      CORPORATE TRANSACTION/CHANGE IN CONTROL/HOSTILE TAKE-
               OVER

               A. In the event of any Corporate Transaction while the Optionee
remains a Board member, each outstanding option held by such Optionee under this
Director Fee Option Grant Program shall automatically accelerate so that each
such option shall, immediately prior to the effective date of the Corporate
Transaction, become fully exercisable with respect to the

                                       25.

<PAGE>   26



total number of shares of Common Stock at the time subject to such option and
may be exercised for any or all of those shares as fully-vested shares of Common
Stock. Each such outstanding option shall be assumed by the successor
corporation (or parent thereof) in the Corporate Transaction and shall remain
exercisable for the fully-vested shares until the earlier of (i) the expiration
of the ten (10)-year option term or (ii) the expiration of the three (3)-year
period measured from the date of the Optionee's cessation of Board service.

               B. In the event of a Change in Control while the Optionee remains
in Service, each outstanding option held by such Optionee under this Director
Fee Option Grant Program shall automatically accelerate so that each such option
shall immediately become fully exercisable with respect to the total number of
shares of Common Stock at the time subject to such option and may be exercised
for any or all of those shares as fully-vested shares of Common Stock. The
option shall remain so exercisable until the earlier or (i) the expiration of
the ten (10)-year option term or (ii) the expiration of the three (3)-year
period measured from the date of the Optionee's cessation of Service.

               C. Upon the occurrence of a Hostile Take-Over, the Optionee shall
have a thirty (30)-day period in which to surrender to the Corporation each
outstanding option granted him or her under the Director Fee Option Grant
Program. The Optionee shall in return be entitled to a cash distribution from
the Corporation in an amount equal to the excess of (i) the Take-Over Price of
the shares of Common Stock at the time subject to each surrendered option
(whether or not the Optionee is otherwise at the time vested in those shares)
over (ii) the aggregate exercise price payable for such shares. Such cash
distribution shall be paid within five (5) days following the surrender of the
option to the Corporation. No approval or consent of the Board or any Plan
Administrator shall be required in connection with such option surrender and
cash distribution.

               D. The grant of options under the Director Fee Option Grant
Program shall in no way affect the right of the Corporation to adjust,
reclassify, reorganize or otherwise change its capital or business structure or
to merge, consolidate, dissolve, liquidate or sell or transfer all or any part
of its business or assets.

      IV.      REMAINING TERMS

               The remaining terms of each option granted under this Director
Fee Option Grant Program shall be the same as the terms in effect for option
grants made under the Discretionary Option Grant Program.

                                       26.

<PAGE>   27

                                  ARTICLE SEVEN

                                  MISCELLANEOUS

       I.      FINANCING

               The Plan Administrator may permit any Optionee or Participant to
pay the option exercise price under the Discretionary Option Grant Program or
the purchase price of shares issued under the Stock Issuance Program by
delivering a full-recourse, interest bearing promissory note payable in one or
more installments. The terms of any such promissory note (including the interest
rate and the terms of repayment) shall be established by the Plan Administrator
in its sole discretion. In no event may the maximum credit available to the
Optionee or Participant exceed the sum of (i) the aggregate option exercise
price or purchase price payable for the purchased shares plus (ii) any Federal,
state and local income and employment tax liability incurred by the Optionee or
the Participant in connection with the option exercise or share purchase.

      II.      TAX WITHHOLDING

               A. The Corporation's obligation to deliver shares of Common Stock
upon the exercise of options or the issuance or vesting of such shares under the
Plan shall be subject to the satisfaction of all applicable Federal, state and
local income and employment tax withholding requirements.

               B. The Plan Administrator may, in its discretion, provide any or
all holders of Non-Statutory Options or unvested shares of Common Stock under
the Plan (other than the options granted or the shares issued under the
Automatic Option Grant or Director Fee Option Grant Program) with the right to
use shares of Common Stock in satisfaction of all or part of the Taxes incurred
by such holders in connection with the exercise of their options or the vesting
of their shares. Such right may be provided to any such holder in either or both
of the following formats:

                      Stock Withholding:  The election to have the Corporation 
withhold, from the shares of Common Stock otherwise issuable upon the exercise
of such Non-Statutory Option or the vesting of such shares, a portion of those
shares with an aggregate Fair Market Value equal to the percentage of the Taxes
(not to exceed one hundred percent (100%)) designated by the holder.

                      Stock Delivery:  The election to deliver to the 
Corporation, at the time the Non-Statutory Option is exercised or the shares
vest, one or more shares of Common Stock previously acquired by such holder
(other than in connection with the option exercise or share vesting triggering
the Taxes) with an aggregate Fair Market Value equal to the percentage of the
Taxes (not to exceed one hundred percent (100%)) designated by the holder.


                                       27.

<PAGE>   28

     III.      EFFECTIVE DATE AND TERM OF THE PLAN

               A. The Plan shall become effective immediately at the Plan
Effective Date. However, the Salary Investment Option Grant Program and the
Director Fee Option Grant Program shall not be implemented until such time as
the Primary Committee may deem appropriate. Options may be granted under the
Discretionary Option Grant at any time on or after the Plan Effective Date.
However, no options granted under the Plan may be exercised, and no shares shall
be issued under the Plan, until the Plan is approved by the Corporation's
stockholders. If such stockholder approval is not obtained within twelve (12)
months after the Plan Effective Date, then all options previously granted under
this Plan shall terminate and cease to be outstanding, and no further options
shall be granted and no shares shall be issued under the Plan.

               B. The Plan shall serve as the successor to the Predecessor Plan,
and no further option grants or direct stock issuances shall be made under the
Predecessor Plan after the Section 12 Registration Date. All options outstanding
under the Predecessor Plan on the Section 12 Registration Date shall be
incorporated into the Plan at that time and shall be treated as outstanding
options under the Plan. However, each outstanding option so incorporated shall
continue to be governed solely by the terms of the documents evidencing such
option, and no provision of the Plan shall be deemed to affect or otherwise
modify the rights or obligations of the holders of such incorporated options
with respect to their acquisition of shares of Common Stock.

               C. One or more provisions of the Plan, including (without
limitation) the option/vesting acceleration provisions of Article Two relating
to Corporate Transactions and Changes in Control, may, in the Plan
Administrator's discretion, be extended to one or more options incorporated from
the Predecessor Plan which do not otherwise contain such provisions.

               D. The Plan shall terminate upon the earliest to occur of (i)
March 9, 2008, (ii) the date on which all shares available for issuance under
the Plan shall have been issued as fully-vested shares or (iii) the termination
of all outstanding options in connection with a Corporate Transaction. Should
the Plan terminate on March 9, 2008, then all option grants and unvested stock
issuances outstanding at that time shall continue to have force and effect in
accordance with the provisions of the documents evidencing such grants or
issuances.

      IV.      AMENDMENT OF THE PLAN

               A. The Board shall have complete and exclusive power and
authority to amend or modify the Plan in any or all respects. However, no such
amendment or modification shall adversely affect the rights and obligations with
respect to stock options or unvested stock issuances at the time outstanding
under the Plan unless the Optionee or the Participant consents to such amendment
or modification. In addition, certain amendments may require stockholder
approval pursuant to applicable laws or regulations.


                                       28.

<PAGE>   29

               B. Options to purchase shares of Common Stock may be granted
under the Discretionary Option Grant and Salary Investment Option Grant Programs
and shares of Common Stock may be issued under the Stock Issuance Program that
are in each instance in excess of the number of shares then available for
issuance under the Plan, provided any excess shares actually issued under those
programs shall be held in escrow until there is obtained stockholder approval of
an amendment sufficiently increasing the number of shares of Common Stock
available for issuance under the Plan. If such stockholder approval is not
obtained within twelve (12) months after the date the first such excess
issuances are made, then (i) any unexercised options granted on the basis of
such excess shares shall terminate and cease to be outstanding and (ii) the
Corporation shall promptly refund to the Optionees and the Participants the
exercise or purchase price paid for any excess shares issued under the Plan and
held in escrow, together with interest (at the applicable Short Term Federal
Rate) for the period the shares were held in escrow, and such shares shall
thereupon be automatically cancelled and cease to be outstanding.

       V.      USE OF PROCEEDS

               Any cash proceeds received by the Corporation from the sale of
shares of Common Stock under the Plan shall be used for general corporate
purposes.

      VI.      REGULATORY APPROVALS

               A. The implementation of the Plan, the granting of any stock
option under the Plan and the issuance of any shares of Common Stock (i) upon
the exercise of any granted option or (ii) under the Stock Issuance Program
shall be subject to the Corporation's procurement of all approvals and permits
required by regulatory authorities having jurisdiction over the Plan, the stock
options granted under it and the shares of Common Stock issued pursuant to it.

               B. No shares of Common Stock or other assets shall be issued or
delivered under the Plan unless and until there shall have been compliance with
all applicable requirements of Federal and state securities laws, including the
filing and effectiveness of the Form S-8 registration statement for the shares
of Common Stock issuable under the Plan, and all applicable listing requirements
of any stock exchange (or the Nasdaq National Market, if applicable) on which
Common Stock is then listed for trading.

     VII.      NO EMPLOYMENT/SERVICE RIGHTS

               Nothing in the Plan shall confer upon the Optionee or the
Participant any right to continue in Service for any period of specific duration
or interfere with or otherwise restrict in any way the rights of the Corporation
(or any Parent or Subsidiary employing or retaining such person) or of the
Optionee or the Participant, which rights are hereby expressly reserved by each,
to terminate such person's Service at any time for any reason, with or without
cause.

                                       29.

<PAGE>   30

                                    APPENDIX


               The following definitions shall be in effect under the Plan:

        A. AUTOMATIC OPTION GRANT PROGRAM shall mean the automatic option grant
program in effect under the Plan.

        B. BOARD shall mean the Corporation's Board of Directors.

        C. CHANGE IN CONTROL shall mean a change in ownership or control of the
Corporation effected through either of the following transactions:

                    (i) the acquisition, directly or indirectly by any person or
        related group of persons (other than the Corporation or a person that
        directly or indirectly controls, is controlled by, or is under common
        control with, the Corporation), of beneficial ownership (within the
        meaning of Rule 13d-3 of the 1934 Act) of securities possessing more
        than fifty percent (50%) of the total combined voting power of the
        Corporation's outstanding securities pursuant to a tender or exchange
        offer made directly to the Corporation's stockholders, or

                   (ii) a change in the composition of the Board over a period
        of thirty-six (36) consecutive months or less such that a majority of
        the Board members ceases, by reason of one or more contested elections
        for Board membership, to be comprised of individuals who either (A) have
        been Board members continuously since the beginning of such period or
        (B) have been elected or nominated for election as Board members during
        such period by at least a majority of the Board members described in
        clause (A) who were still in office at the time the Board approved such
        election or nomination.

        D. CODE shall mean the Internal Revenue Code of 1986, as amended.

        E. COMMON STOCK shall mean the Corporation's common stock.

        F. CORPORATE TRANSACTION shall mean either of the following
stockholder-approved transactions to which the Corporation is a party:

                    (i) a merger or consolidation in which securities possessing
        more than fifty percent (50%) of the total combined voting power of the
        Corporation's outstanding securities are transferred to a person or
        persons different from the persons holding those securities immediately
        prior to such transaction, or


                                      A-1.

<PAGE>   31



                   (ii) the sale, transfer or other disposition of all or
        substantially all of the Corporation's assets in complete liquidation or
        dissolution of the Corporation.

        G. CORPORATION shall mean Com21, Inc., a Delaware corporation, and its
successors.

        H. DIRECTOR FEE OPTION GRANT PROGRAM shall mean the special stock option
grant in effect for non-employee Board members under Article Six of the Plan.

        I. DISCRETIONARY OPTION GRANT PROGRAM shall mean the discretionary
option grant program in effect under the Plan.

        J. ELIGIBLE DIRECTOR shall mean a non-employee Board member eligible to
participate in the Automatic Option Grant Program in accordance with the
eligibility provisions of Article One.

        K. EMPLOYEE shall mean an individual who is in the employ of the
Corporation (or any Parent or Subsidiary), subject to the control and direction
of the employer entity as to both the work to be performed and the manner and
method of performance.

        L. EXERCISE DATE shall mean the date on which the Corporation shall have
received written notice of the option exercise.

        M. FAIR MARKET VALUE per share of Common Stock on any relevant date
shall be determined in accordance with the following provisions:

                    (i) If the Common Stock is at the time traded on the Nasdaq
        National Market, then the Fair Market Value shall be the closing selling
        price per share of Common Stock on the date in question, as such price
        is reported by the National Association of Securities Dealers on the
        Nasdaq National Market. If there is no closing selling price for the
        Common Stock on the date in question, then the Fair Market Value shall
        be the closing selling price on the last preceding date for which such
        quotation exists.

                   (ii) If the Common Stock is at the time listed on any Stock
        Exchange, then the Fair Market Value shall be the closing selling price
        per share of Common Stock on the date in question on the Stock Exchange
        determined by the Plan Administrator to be the primary market for the
        Common Stock, as such price is officially quoted in the composite tape
        of transactions on such exchange. If there is no closing selling price
        for the Common Stock on the date in question, then the Fair Market Value
        shall be the closing selling price on the last preceding date for which
        such quotation exists.


                                      A-2.

<PAGE>   32

                  (iii) For purposes of any option grants made on the
        Underwriting Date, the Fair Market Value shall be deemed to be equal to
        the price per share at which the Common Stock is to be sold in the
        initial public offering pursuant to the Underwriting Agreement.

        N. HOSTILE TAKE-OVER shall mean the acquisition, directly or indirectly,
by any person or related group of persons (other than the Corporation or a
person that directly or indirectly controls, is controlled by, or is under
common control with, the Corporation) of beneficial ownership (within the
meaning of Rule 13d-3 of the 1934 Act) of securities possessing more than fifty
percent (50%) of the total combined voting power of the Corporation's
outstanding securities pursuant to a tender or exchange offer made directly to
the Corporation's stockholders which the Board does not recommend such
stockholders to accept.

        O. INCENTIVE OPTION shall mean an option which satisfies the
requirements of Code Section 422.

        P. INVOLUNTARY TERMINATION shall mean the termination of the Service of
any individual which occurs by reason of:

                    (i) such individual's involuntary dismissal or discharge by
        the Corporation for reasons other than Misconduct, or

                   (ii) such individual's voluntary resignation following (A) a
        change in his or her position with the Corporation which materially
        reduces his or her duties and responsibilities or the level of
        management to which he or she reports, (B) a reduction in his or her
        level of compensation (including base salary, fringe benefits and target
        bonus under any corporate-performance based bonus or incentive programs)
        by more than fifteen percent (15%) or (C) a relocation of such
        individual's place of employment by more than fifty (50) miles, provided
        and only if such change, reduction or relocation is effected by the
        Corporation without the individual's consent.

        Q. MISCONDUCT shall mean the commission of any act of fraud,
embezzlement or dishonesty by the Optionee or Participant, any unauthorized use
or disclosure by such person of confidential information or trade secrets of the
Corporation (or any Parent or Subsidiary), or any other intentional misconduct
by such person adversely affecting the business or affairs of the Corporation
(or any Parent or Subsidiary) in a material manner. The foregoing definition
shall not be deemed to be inclusive of all the acts or omissions which the
Corporation (or any Parent or Subsidiary) may consider as grounds for the
dismissal or discharge of any Optionee, Participant or other person in the
Service of the Corporation (or any Parent or Subsidiary).

        R. 1934 ACT shall mean the Securities Exchange Act of 1934, as amended.


                                      A-3.

<PAGE>   33

        S. NON-STATUTORY OPTION shall mean an option not intended to satisfy the
requirements of Code Section 422.

        T. OPTIONEE shall mean any person to whom an option is granted under the
Discretionary Option Grant, Salary Investment Option Grant, Automatic Option
Grant or Director Fee Option Grant Program.

        U. PARENT shall mean any corporation (other than the Corporation) in an
unbroken chain of corporations ending with the Corporation, provided each
corporation in the unbroken chain (other than the Corporation) owns, at the time
of the determination, stock possessing fifty percent (50%) or more of the total
combined voting power of all classes of stock in one of the other corporations
in such chain.

        V. PARTICIPANT shall mean any person who is issued shares of Common
Stock under the Stock Issuance Program.

        W. PERMANENT DISABILITY OR PERMANENTLY DISABLED shall mean the inability
of the Optionee or the Participant to engage in any substantial gainful activity
by reason of any medically determinable physical or mental impairment expected
to result in death or to be of continuous duration of twelve (12) months or
more. However, solely for purposes of the Automatic Option Grant and Director
Fee Option Grant Programs, Permanent Disability or Permanently Disabled shall
mean the inability of the non-employee Board member to perform his or her usual
duties as a Board member by reason of any medically determinable physical or
mental impairment expected to result in death or to be of continuous duration of
twelve (12) months or more.

        X. PLAN shall mean the Corporation's 1998 Stock Incentive Plan, as set
forth in this document.

        Y. PLAN ADMINISTRATOR shall mean the particular entity, whether the
Primary Committee, the Board or the Secondary Committee, which is authorized to
administer the Discretionary Option Grant and Stock Issuance Programs with
respect to one or more classes of eligible persons, to the extent such entity is
carrying out its administrative functions under those programs with respect to
the persons under its jurisdiction.

        Z. PLAN EFFECTIVE DATE shall mean April 1, 1998.

        AA. PREDECESSOR PLAN shall mean the Corporation's pre-existing Stock
Option Plan in effect immediately prior to the Plan Effective Date hereunder.


                                      A-4.

<PAGE>   34

        AB. PRIMARY COMMITTEE shall mean the committee of two (2) or more
non-employee Board members appointed by the Board to administer the
Discretionary Option Grant and Stock Issuance Programs with respect to Section
16 Insiders and to administer the Salary Investment Option Grant Program solely
with respect to the selection of the eligible individuals who may participate in
such program.

        AC. SALARY INVESTMENT OPTION GRANT PROGRAM shall mean the salary
investment option grant program in effect under the Plan.

        AD. SECONDARY COMMITTEE shall mean a committee of one or more Board
members appointed by the Board to administer the Discretionary Option Grant and
Stock Issuance Programs with respect to eligible persons other than Section 16
Insiders.

        AE. SECTION 12 REGISTRATION DATE shall mean the date on which the Common
Stock is first registered under Section 12 of the 1934 Act.

        AF. SECTION 16 INSIDER shall mean an officer or director of the
Corporation subject to the short-swing profit liabilities of Section 16 of the
1934 Act.

        AG. SERVICE shall mean the performance of services for the Corporation
(or any Parent or Subsidiary) by a person in the capacity of an Employee, a
non-employee member of the board of directors or a consultant or independent
advisor, except to the extent otherwise specifically provided in the documents
evidencing the option grant or stock issuance.

        AH. STOCK EXCHANGE shall mean either the American Stock Exchange or the
New York Stock Exchange.

        AI. STOCK ISSUANCE AGREEMENT shall mean the agreement entered into by
the Corporation and the Participant at the time of issuance of shares of Common
Stock under the Stock Issuance Program.

        AJ. STOCK ISSUANCE PROGRAM shall mean the stock issuance program in
effect under the Plan.

        AK. SUBSIDIARY shall mean any corporation (other than the Corporation)
in an unbroken chain of corporations beginning with the Corporation, provided
each corporation (other than the last corporation) in the unbroken chain owns,
at the time of the determination, stock possessing fifty percent (50%) or more
of the total combined voting power of all classes of stock in one of the other
corporations in such chain.


                                      A-5.

<PAGE>   35


        AL. TAKE-OVER PRICE shall mean the greater of (i) the Fair Market Value
per share of Common Stock on the date the option is surrendered to the
Corporation in connection with a Hostile Take-Over or (ii) the highest reported
price per share of Common Stock paid by the tender offeror in effecting such
Hostile Take-Over. However, if the surrendered option is an Incentive Option,
the Take-Over Price shall not exceed the clause (i) price per share.

        AM. TAXES shall mean the Federal, state and local income and employment
tax liabilities incurred by the holder of Non-Statutory Options or unvested
shares of Common Stock in connection with the exercise of those options or the
vesting of those shares.

        AN. 10% STOCKHOLDER shall mean the owner of stock (as determined under
Code Section 424(d)) possessing more than ten percent (10%) of the total
combined voting power of all classes of stock of the Corporation (or any Parent
or Subsidiary).

        AO. UNDERWRITING AGREEMENT shall mean the agreement between the
Corporation and the underwriter or underwriters managing the initial public
offering of the Common Stock.

        AP. UNDERWRITING DATE shall mean the date on which the Underwriting
Agreement is executed and priced in connection with an initial public offering
of the Common Stock.


                                      A-6.



<PAGE>   1
                                                                    EXHIBIT 99.2

                                  COM21, INC.
                        NOTICE OF GRANT OF STOCK OPTION

          Notice is hereby given of the following option grant (the "Option")
to purchase shares of the Common Stock of Com21, Inc. (the "Corporation"):

          Optionee: _________________________________________________________

          Grant Date: _______________________________________________________

          Vesting Commencement Date: ________________________________________

          Exercise Price: $ _______________________________________ per share

          Number of Option Shares: ___________________________________ shares

          Expiration Date: __________________________________________________

          Type of Option:     _____ Incentive Stock Option

                              _____ Non-Statutory Stock Option

          Exercise Schedule: The Option shall become exercisable for twenty-five
          percent (25%) of the Option Shares upon Optionee's completion of one
          (1) year of Service measured from the Vesting Commencement Date and
          shall become exercisable for the balance of the Option Shares in
          thirty-six (36) successive equal monthly installments upon Optionee's
          completion of each additional month of Service over the thirty-six
          (36) month period measured from the first anniversary of the Vesting
          Commencement Date. In no event shall the Option become exercisable for
          any additional Option Shares after Optionee's cessation of Service.

          Optionee understands and agrees that the Option is granted subject to
and in accordance with the terms of the Com21, Inc. 1998 Stock Incentive Plan
(the "Plan"). Optionee further agrees to be bound by the terms of the Plan and
the terms of the Option as set forth in the Stock Option Agreement attached
hereto as Exhibit A. Optionee hereby acknowledges receipt of a copy of the
official prospectus for the Plan in the form attached hereto as Exhibit B. A
copy of the Plan is available upon request made to the Corporate Secretary at
the Corporation's principal offices.
<PAGE>   2
      No Employment or Service Contract. Nothing in this Notice or in the
attached Stock Option Agreement or in the Plan shall confer upon Optionee any
right to continue in Service for any period of specific duration or interfere
with or otherwise restrict in any way the rights of the Corporation (or any
Parent or Subsidiary employing or retaining Optionee) or of Optionee, which
rights are hereby expressly reserved by each, to terminate Optionee's Service
at any time for any reason, with or without cause.

      Definitions. All capitalized terms in this Notice shall have the meaning
assigned to them in this Notice or in the attached Stock Option Agreement.

DATED:___________________________, 199__

                                        COM21, INC.

                                        By:    ________________________________

                                        Title: ________________________________


                                        _______________________________________
                                        OPTIONEE

                                        Address: ______________________________

                                        _______________________________________





ATTACHMENTS
Exhibit A - Stock Option Agreement
Exhibit B - Plan Summary and Prospectus

<PAGE>   3
                                   EXHIBIT A

                             STOCK OPTION AGREEMENT


<PAGE>   4

                                   EXHIBIT B

                          PLAN SUMMARY AND PROSPECTUS



<PAGE>   1
                                                                   EXHIBIT 99.3

                                  COM21, INC.
                             STOCK OPTION AGREEMENT


RECITALS

         A.      The Board has adopted the Plan for the purpose of retaining
the services of selected Employees, non-employee members of the Board or of the
board of directors of any Parent or Subsidiary and consultants and other
independent advisors who provide services to the Corporation (or any Parent or
Subsidiary).

         B.      Optionee is to render valuable services to the Corporation (or
a Parent or Subsidiary), and this Agreement is executed pursuant to, and is
intended to carry out the purposes of, the Plan in connection with the
Corporation's grant of an option to Optionee.

         C.      All capitalized terms in this Agreement shall have the meaning
assigned to them in the attached Appendix.

                 NOW, THEREFORE, it is hereby agreed as follows:

                 1.       GRANT OF OPTION.  The Corporation hereby grants to
Optionee, as of the Grant Date, an option to purchase up to the number of
Option Shares specified in the Grant Notice.  The Option Shares shall be
purchasable from time to time during the option term specified in Paragraph 2
at the Exercise Price.

                 2.       OPTION TERM.  This option shall have a maximum term
of ten (10) years measured from the Grant Date and shall accordingly expire at
the close of business on the Expiration Date, unless sooner terminated in
accordance with Paragraph 5 or 6.

                 3.       LIMITED TRANSFERABILITY.  This option shall be
neither transferable nor assignable by Optionee other than by will or by the
laws of descent and distribution following Optionee's death and may be
exercised, during Optionee's lifetime, only by Optionee.  However, if this
option is designated a Non-Statutory Option in the Grant Notice, then this
option may, in connection with the Optionee's estate plan, be assigned in whole
or in part during Optionee's lifetime to one or more members of the Optionee's
immediate family or to a trust established for the exclusive benefit of one or
more such family members.  The assigned portion shall be exercisable only by
the person or persons who acquire a proprietary interest in the option pursuant
to such assignment.  The terms applicable to the assigned portion shall be the
same as those in effect for this option immediately prior to such assignment.

                 4.       DATES OF EXERCISE.  This option shall become
exercisable for the Option Shares in one or more installments as specified in
the Grant Notice.  As the option becomes exercisable for such installments,
those installments shall accumulate and the option shall remain
<PAGE>   2

exercisable for the accumulated installments until the Expiration Date or
sooner termination of the option term under Paragraph 5 or 6.

                 5.       CESSATION OF SERVICE.  The option term specified in
Paragraph 2 shall terminate (and this option shall cease to be outstanding)
prior to the Expiration Date should any of the following provisions become
applicable:

                                        (a)       Should Optionee cease to
         remain in Service for any reason (other than death, Permanent
         Disability or Misconduct) while holding this option, then Optionee
         shall have a period of three (3) months (commencing with the date of
         such cessation of Service) during which to exercise this option, but
         in no event shall this option be exercisable at any time after the
         Expiration Date.

                                        (b)       Should Optionee die while
         holding this option, then the personal representative of Optionee's
         estate or the person or persons to whom the option is transferred
         pursuant to Optionee's will or in accordance with the laws of
         inheritance shall have the right to exercise this option.  Such right
         shall lapse, and this option shall cease to be outstanding, upon the
         earlier of (i) the expiration of the twelve (12)-month period measured
         from the date of Optionee's death or (ii) the Expiration Date.

                                        (c)       Should Optionee cease Service
         by reason of Permanent Disability while holding this option, then
         Optionee shall have a period of twelve (12) months (commencing with
         the date of such cessation of Service) during which to exercise this
         option.  In no event shall this option be exercisable at any time
         after the Expiration Date.

                                        (d)       During the limited period of
         post-Service exercisability, this option may not be exercised in the
         aggregate for more than the number of Option Shares for which the
         option is exercisable at the time of Optionee's cessation of Service.
         Upon the expiration of such limited exercise period or (if earlier)
         upon the Expiration Date, this option shall terminate and cease to be
         outstanding for any exercisable Option Shares for which the option has
         not been exercised.  However, this option shall, immediately upon
         Optionee's cessation of Service for any reason, terminate and cease to
         be outstanding with respect to any Option Shares for which this option
         is not otherwise at that time exercisable.

                                        (e)       Should Optionee's Service be
         terminated for Misconduct, then this option shall terminate
         immediately and cease to remain outstanding.



                                       2.
<PAGE>   3
                 6.       SPECIAL ACCELERATION OF OPTION.

                          (a)     This option to the extent outstanding at the
time of a Corporate Transaction, but not otherwise fully exercisable, shall
automatically accelerate so that this option shall, immediately prior to the
effective date of such Corporate Transaction, become exercisable for all of the
Option Shares at the time subject to this option and may be exercised for any
or all of those Option Shares as fully vested shares of Common Stock.  No such
acceleration of this option shall occur, however, if and to the extent: (i)
this option is, in connection with the Corporate Transaction, to be assumed by
the successor corporation (or parent thereof) or (ii) this option is to be
replaced with a cash incentive program of the successor corporation which
preserves the spread existing at the time of the Corporate Transaction on the
Option Shares for which this option is not otherwise at that time exercisable
(the excess of the Fair Market Value of those Option Shares over the aggregate
Exercise Price payable for such shares) and provides for subsequent payout in
accordance with the same option exercise/vesting schedule set forth in the
Grant Notice.

                          (b)     Immediately following the Corporate
Transaction, this option shall terminate and cease to be outstanding, except to
the extent assumed by the successor corporation (or parent thereof) in
connection with the Corporate Transaction.

                          (c)     If this option is assumed in connection with
a Corporate Transaction, then this option shall be appropriately adjusted,
immediately after such Corporate Transaction, to apply to the number and class
of securities which would have been issuable to Optionee in consummation of
such Corporate Transaction had the option been exercised immediately prior to
such Corporate Transaction, and appropriate adjustments shall also be made to
the Exercise Price, provided the aggregate Exercise Price shall remain the
same.

                          (d)     This Agreement shall not in any way affect
the right of the Corporation to adjust, reclassify, reorganize or otherwise
change its capital or business structure or to merge, consolidate, dissolve,
liquidate or sell or transfer all or any part of its business or assets.

                 7.       ADJUSTMENT IN OPTION SHARES.

                          Should any change be made to the Common Stock by
reason of any stock split, stock dividend, recapitalization, combination of
shares, exchange of shares or other change affecting the outstanding Common
Stock as a class without the Corporation's receipt of consideration,
appropriate adjustments shall be made to (i) the total number and/or class of
securities subject to this option and (ii) the Exercise Price in order to
reflect such change and thereby preclude a dilution or enlargement of benefits
hereunder.


                 8.       STOCKHOLDER RIGHTS.  The holder of this option shall
not have any stockholder rights with respect to the Option Shares until such
person shall have exercised the option, paid the Exercise Price and become a
holder of record of the purchased shares.



                                       3.

<PAGE>   4
                 9.       MANNER OF EXERCISING OPTION.

                          (a)     In order to exercise this option with respect
to all or any part of the Option Shares for which this option is at the time
exercisable, Optionee (or any other person or persons exercising the option)
must take the following actions:

                                       (i)         Execute and deliver to the
         Corporation a Notice of Exercise for the Option Shares for which the
         option is exercised.

                                       (ii)        Pay the aggregate Exercise
         Price for the purchased shares in one or more of the following forms:

                                        (A)     cash or check made payable to
the Corporation;

                                        (B)     a promissory note payable to
                 the Corporation, but only to the extent authorized by the Plan
                 Administrator in accordance with Paragraph 13;

                                        (C)     shares of Common Stock held by
                 Optionee (or any other person or persons exercising the
                 option) for the requisite period necessary to avoid a charge
                 to the Corporation's earnings for financial reporting purposes
                 and valued at Fair Market Value on the Exercise Date; or

                                        (D)     through a special sale and
                 remittance procedure pursuant to which Optionee (or any other
                 person or persons exercising the option) shall concurrently
                 provide irrevocable instructions (I) to a
                 Corporation-designated brokerage firm to effect the immediate
                 sale of the purchased shares and remit to the Corporation, out
                 of the sale proceeds available on the settlement date,
                 sufficient funds to cover the aggregate Exercise Price payable
                 for the purchased shares plus all applicable Federal, state
                 and local income and employment taxes required to be withheld
                 by the Corporation by reason of such exercise and (II) to the
                 Corporation to deliver the certificates for the purchased
                 shares directly to such brokerage firm in order to complete
                 the sale.

                          Except to the extent the sale and remittance
                 procedure is utilized in connection with the option exercise,
                 payment of the Exercise Price must accompany the Notice of
                 Exercise delivered to the Corporation in connection with the
                 option exercise.




                                       4.
<PAGE>   5
                                     (iii)         Furnish to the Corporation
         appropriate documentation that the person or persons exercising the
         option (if other than Optionee) have the right to exercise this
         option.

                                       (iv)        Make appropriate
         arrangements with the Corporation (or Parent or Subsidiary employing
         or retaining Optionee) for the satisfaction of all Federal, state and
         local income and employment tax withholding requirements applicable to
         the option exercise.

                          (b)     As soon as practical after the Exercise Date,
the Corporation shall issue to or on behalf of Optionee (or any other person or
persons exercising this option) a certificate for the purchased Option Shares,
with the appropriate legends affixed thereto.

                          (c)     In no event may this option be exercised for
any fractional shares.

                 10.      COMPLIANCE WITH LAWS AND REGULATIONS.

                          (a)     The exercise of this option and the issuance
of the Option Shares upon such exercise shall be subject to compliance by the
Corporation and Optionee with all applicable requirements of law relating
thereto and with all applicable regulations of any stock exchange (or the
Nasdaq National Market, if applicable) on which the Common Stock may be listed
for trading at the time of such exercise and issuance.

                          (b)     The inability of the Corporation to obtain
approval from any regulatory body having authority deemed by the Corporation to
be necessary to the lawful issuance and sale of any Common Stock pursuant to
this option shall relieve the Corporation of any liability with respect to the
non-issuance or sale of the Common Stock as to which such approval shall not
have been obtained.  The Corporation, however, shall use its best efforts to
obtain all such approvals.

                 11.      SUCCESSORS AND ASSIGNS.  Except to the extent
otherwise provided in Paragraphs 3 and 6, the provisions of this Agreement
shall inure to the benefit of, and be binding upon, the Corporation and its
successors and assigns and Optionee, Optionee's assigns and the legal
representatives, heirs and legatees of Optionee's estate.

                 12.      NOTICES.  Any notice required to be given or
delivered to the Corporation under the terms of this Agreement shall be in
writing and addressed to the Corporation at its principal corporate offices.
Any notice required to be given or delivered to Optionee shall be in writing
and addressed to Optionee at the address indicated below Optionee's signature
line on the Grant Notice.  All notices shall be deemed effective upon personal
delivery or upon deposit in the U.S. mail, postage prepaid and properly
addressed to the party to be notified.



                                       5.
<PAGE>   6
                 13.      FINANCING.  The Plan Administrator may, in its
absolute discretion and without any obligation to do so, permit Optionee to pay
the Exercise Price for the purchased Option Shares by delivering a
full-recourse promissory note payable to the Corporation.  The terms of any
such promissory note (including the interest rate, the requirements for
collateral and the terms of repayment) shall be established by the Plan
Administrator in its sole discretion.

                 14.      CONSTRUCTION.  This Agreement and the option
evidenced hereby are made and granted pursuant to the Plan and are in all
respects limited by and subject to the terms of the Plan.  All decisions of the
Plan Administrator with respect to any question or issue arising under the Plan
or this Agreement shall be conclusive and binding on all persons having an
interest in this option.

                 15.      GOVERNING LAW.  The interpretation, performance and
enforcement of this Agreement shall be governed by the laws of the State of
California without resort to that State's conflict-of-laws rules.

                 16.      EXCESS SHARES.  If the Option Shares covered by this
Agreement exceed, as of the Grant Date, the number of shares of Common Stock
which may without stockholder approval be issued under the Plan, then this
option shall be void with respect to those excess shares, unless stockholder
approval of an amendment sufficiently increasing the number of shares of Common
Stock issuable under the Plan is obtained in accordance with the provisions of
the Plan.

                 17.      ADDITIONAL TERMS APPLICABLE TO AN INCENTIVE OPTION.
In the event this option is designated an Incentive Option in the Grant Notice,
the following terms and conditions shall also apply to the grant:

                                        (a)       This option shall cease to
         qualify for favorable tax treatment as an Incentive Option if (and to
         the extent) this option is exercised for one or more Option Shares:
         (A) more than three (3) months after the date Optionee ceases to be an
         Employee for any reason other than death or Permanent Disability or
         (B) more than twelve (12) months after the date Optionee ceases to be
         an Employee by reason of Permanent Disability.

                                        (b)       No installment under this
         option shall qualify for favorable tax treatment as an Incentive
         Option if (and to the extent) the aggregate Fair Market Value
         (determined at the Grant Date) of the Common Stock for which such
         installment first becomes exercisable hereunder would, when added to
         the aggregate value (determined as of the respective date or dates of
         grant) of the Common Stock or other securities for which this option
         or any other Incentive Options granted to Optionee prior to the Grant
         Date (whether under the Plan or any other option plan of the
         Corporation or any Parent or Subsidiary) first become exercisable
         during the same calendar year, exceed One Hundred Thousand Dollars
         ($100,000) in the aggregate.  Should such One Hundred Thousand Dollar





                                       6.
<PAGE>   7

         ($100,000) limitation be exceeded in any calendar year, this option
         shall nevertheless become exercisable for the excess shares in such
         calendar year as a Non-Statutory Option.

                                        (c)       Should the exercisability of
         this option be accelerated upon a Corporate Transaction, then this
         option shall qualify for favorable tax treatment as an Incentive
         Option only to the extent the aggregate Fair Market Value (determined
         at the Grant Date) of the Common Stock for which this option first
         becomes exercisable in the calendar year in which the Corporate
         Transaction occurs does not, when added to the aggregate value
         (determined as of the respective date or dates of grant) of the Common
         Stock or other securities for which this option or one or more other
         Incentive Options granted to Optionee prior to the Grant Date (whether
         under the Plan or any other option plan of the Corporation or any
         Parent or Subsidiary) first become exercisable during the same
         calendar year, exceed One Hundred Thousand Dollars ($100,000) in the
         aggregate.  Should the applicable One Hundred Thousand Dollar
         ($100,000) limitation be exceeded in the calendar year of such
         Corporate Transaction, the option may nevertheless be exercised for
         the excess shares in such calendar year as a Non-Statutory Option.

                                        (d)       Should Optionee hold, in
         addition to this option, one or more other options to purchase Common
         Stock which become exercisable for the first time in the same calendar
         year as this option, then the foregoing limitations on the
         exercisability of such options as Incentive Options shall be applied
         on the basis of the order in which such options are granted.





                                       7.
<PAGE>   8
                                   EXHIBIT I
                               NOTICE OF EXERCISE


                 I hereby notify Com21, Inc. (the "Corporation") that I elect
to purchase ____________ shares of the Corporation's Common Stock (the
"Purchased Shares") at the option exercise price of $
__________________________ per share (the "Exercise Price") pursuant to that
certain option (the "Option") granted to me under the Corporation's 1998 Stock
Incentive Plan on ______________________________, 199___.

                 Concurrently with the delivery of this Exercise Notice to the
Corporation, I shall hereby pay to the Corporation the Exercise Price for the
Purchased Shares in accordance with the provisions of my agreement with the
Corporation (or other documents) evidencing the Option and shall deliver
whatever additional documents may be required by such agreement as a condition
for exercise.  Alternatively, I may utilize the special broker-dealer sale and
remittance procedure specified in my agreement to effect payment of the
Exercise Price.


_____________________________, 199__
Date

                                     ___________________________________________
                                     Optionee

                                     Address:___________________________________

                                     ___________________________________________


Print name in exact manner
it is to appear on the
stock certificate:
                                     ___________________________________________

Address to which certificate
is to be sent, if different
from address above:
                                     ___________________________________________

                                     ___________________________________________


Social Security Number:              ___________________________________________

                                     ___________________________________________

Employee Number:                     ___________________________________________








<PAGE>   9
                                    APPENDIX


                 The following definitions shall be in effect under the
Agreement:

         A.      AGREEMENT shall mean this Stock Option Agreement.

         B.      BOARD shall mean the Corporation's Board of Directors.

         C.      COMMON STOCK shall mean shares of the Corporation's common
stock.

         D.      CODE shall mean the Internal Revenue Code of 1986, as amended.

         E.      CORPORATE TRANSACTION shall mean either of the following
stockholder-approved transactions to which the Corporation is a party:

              (i)         a merger or consolidation in which securities
         possessing more than fifty percent (50%) of the total combined voting
         power of the Corporation's outstanding securities are transferred to a
         person or persons different from the persons holding those securities
         immediately prior to such transaction, or

             (ii)         the sale, transfer or other disposition of all or
         substantially all of the Corporation's assets in complete liquidation
         or dissolution of the Corporation.

         F.      CORPORATION shall mean Com21, Inc., a Delaware corporation,
and its successors.

         G.      EMPLOYEE shall mean an individual who is in the employ of the
Corporation (or any Parent or Subsidiary), subject to the control and direction
of the employer entity as to both the work to be performed and the manner and
method of performance.

         H.      EXERCISE DATE shall mean the date on which the option shall
have been exercised in accordance with Paragraph 9 of the Agreement.

         I.      EXERCISE PRICE shall mean the exercise price per Option Share
as specified in the Grant Notice.

         J.      EXPIRATION DATE shall mean the date on which the option
expires as specified in the Grant Notice.

         K.      FAIR MARKET VALUE per share of Common Stock on any relevant
date shall be determined in accordance with the following provisions:





                                      A-1.
<PAGE>   10
              (i)         If the Common Stock is at the time traded on the
         Nasdaq National Market, then the Fair Market Value shall be deemed
         equal to the closing selling price per share of Common Stock on the
         date in question, as the price is reported by the National Association
         of Securities Dealers on the Nasdaq National Market. If there is no
         closing selling price for the Common Stock on the date in question,
         then the Fair Market Value shall be the closing selling price on the
         last preceding date for which such quotation exists.

             (ii)         If the Common Stock is at the time listed on any
         Stock Exchange, then the Fair Market Value shall be deemed equal to
         the closing selling price per share of Common Stock on the date in
         question on the Stock Exchange determined by the Plan Administrator to
         be the primary market for the Common Stock, as such price is
         officially quoted in the composite tape of transactions on such
         exchange.  If there is no closing selling price for the Common Stock
         on the date in question, then the Fair Market Value shall be the
         closing selling price on the last preceding date for which such
         quotation exists.

         L.      GRANT DATE shall mean the date of grant of the option as
specified in the Grant Notice.

         M.      GRANT NOTICE shall mean the Notice of Grant of Stock Option
accompanying the Agreement, pursuant to which Optionee has been informed of the
basic terms of the option evidenced hereby.

         N.      INCENTIVE OPTION shall mean an option which satisfies the
requirements of Code Section 422.

         O.      MISCONDUCT shall mean the commission of any act of fraud,
embezzlement or dishonesty by Optionee, any unauthorized use or disclosure by
Optionee of confidential information or trade secrets of the Corporation (or
any Parent or Subsidiary), or any other intentional misconduct by Optionee
adversely affecting the business or affairs of the Corporation (or any Parent
or Subsidiary) in a material manner.  The foregoing definition shall not be
deemed to be inclusive of all the acts or omissions which the Corporation (or
any Parent or Subsidiary) may consider as grounds for the dismissal or
discharge of Optionee or any other individual in the Service of the Corporation
(or any Parent or Subsidiary).

         P.      NON-STATUTORY OPTION shall mean an option not intended to
satisfy the requirements of Code Section 422.

         Q.      NOTICE OF EXERCISE shall mean the notice of exercise in the
form attached hereto as Exhibit I.





                                      A-2.
<PAGE>   11
         R.      OPTION SHARES shall mean the number of shares of Common Stock
subject to the option as specified in the Grant Notice.

         S.      OPTIONEE shall mean the person to whom the option is granted
as specified in the Grant Notice.

         T.      PARENT shall mean any corporation (other than the Corporation)
in an unbroken chain of corporations ending with the Corporation, provided each
corporation in the unbroken chain (other than the Corporation) owns, at the
time of the determination, stock possessing fifty percent (50%) or more of the
total combined voting power of all classes of stock in one of the other
corporations in such chain.

         U.      PERMANENT DISABILITY shall mean the inability of Optionee to
engage in any substantial gainful activity by reason of any medically
determinable physical or mental impairment which is expected to result in death
or has lasted or can be expected to last for a continuous period of twelve (12)
months or more.

         V.      PLAN shall mean the Corporation's 1998 Stock Incentive Plan.

         W.      PLAN ADMINISTRATOR shall mean either the Board or a committee
of the Board acting in its capacity as administrator of the Plan.

         X.      SERVICE shall mean the Optionee's performance of services for
the Corporation (or any Parent or Subsidiary) in the capacity of an Employee, a
non-employee member of the board of directors or a consultant or independent
advisor.

         Y.      STOCK EXCHANGE shall mean the American Stock Exchange or the
New York Stock Exchange.

         Z.      SUBSIDIARY shall mean any corporation (other than the
Corporation) in an unbroken chain of corporations beginning with the
Corporation, provided each corporation (other than the last corporation) in the
unbroken chain owns, at the time of the determination, stock possessing fifty
percent (50%) or more of the total combined voting power of all classes of
stock in one of the other corporations in such chain.





                                      A-3.

<PAGE>   1
                                                                    EXHIBIT 99.4

                                    ADDENDUM
                                       TO
                             STOCK OPTION AGREEMENT


                 The following provisions are hereby incorporated into, and are
hereby made a part of, that certain Stock Option Agreement (the "Option
Agreement") by and between Com21, Inc. (the "Corporation") and
_______________________ ("Optionee") evidencing the stock option (the "Option")
granted on ______________________, 199____ (the "Grant Date") to Optionee under
the terms of the Corporation's 1998 Stock Incentive Plan, and such provisions
are effective as of the Grant Date.  All capitalized terms in this Addendum, to
the extent not otherwise defined herein, shall have the meanings assigned to
them in the Option Agreement.

                        LIMITED STOCK APPRECIATION RIGHT

                  1.      Optionee is hereby granted a limited stock
appreciation right exercisable upon the following terms and conditions:

                               (i)         Optionee shall have the
         unconditional right, exercisable at any time during the thirty (30)-
         day period immediately following a Hostile Take-Over, to surrender the
         Option to the Corporation, to the extent the Option is at the time
         exercisable for one or more shares of Common Stock.  In return for the
         surrendered Option, Optionee shall receive a cash distribution from
         the Corporation in an amount equal to the excess of (A) the Take-Over
         Price of the shares of Common Stock for which the surrendered option
         (or surrendered portion) is at the time exercisable over (B) the
         aggregate Exercise Price payable for such shares.

                              (ii)         To exercise this limited stock
         appreciation right, Optionee must, during the applicable thirty
         (30)-day exercise period, provide the Corporation with written notice
         of the option surrender in which there is specified the number of
         Option Shares as to which the Option is being surrendered.  Such
         notice must be accompanied by the return of Optionee's copy of the
         Option Agreement, together with any written amendments to such
         Agreement.  The cash distribution shall be paid to Optionee within
         five (5) business days following such delivery date.  The exercise of
         the limited stock appreciation right in accordance with the terms of
         this Addendum is hereby approved by the Plan Administrator, in advance
         of such exercise, and no further approval of the Plan Administrator or
         the Board shall be required at the time of the actual option surrender
         and cash distribution.  Upon receipt of such cash distribution, the
         Option shall be cancelled with respect to the Option Shares for which
         the Option has been surrendered, and Optionee shall cease to have any
         further right to acquire those Option Shares under the Option
         Agreement.  The Option shall, however, remain outstanding and






<PAGE>   2
         exercisable for the balance of the Option Shares (if any) in
         accordance with the terms of the Option Agreement, and the Corporation
         shall issue a replacement stock option agreement (substantially in the
         same form of the surrendered Option Agreement) for those remaining
         Option Shares.

                             (iii)         In no event may this limited stock
         appreciation right be exercised when there is not a positive spread
         between the Fair Market Value of the Option Shares subject to the
         surrendered option and the aggregate Exercise Price payable for such
         shares.  This limited stock appreciation right shall in all events
         terminate upon the expiration or sooner termination of the Option term
         and may not be assigned or transferred by Optionee, except to the
         extent the Option is transferable in accordance with the provisions of
         the Option Agreement.

                 2.       For purposes of this Addendum, the following
definitions shall be in effect:

                               (i)          A HOSTILE TAKE-OVER shall be deemed
         to occur upon the acquisition, directly or indirectly, by any person
         or related group of persons (other than the Corporation or a person
         that directly or indirectly controls, is controlled by, or is under
         common control with, the Corporation) of beneficial ownership (within
         the meaning of Rule 13d-3 of the 1934 Act) of securities possessing
         more than fifty percent (50%) of the total combined voting power of
         the Corporation's outstanding securities pursuant to a tender or
         exchange offer made directly to the Corporation's stockholders which
         the Board does not recommend such stockholders to accept.

                              (ii)         The TAKE-OVER PRICE per share shall
         be deemed to be equal to the greater of (A) the Fair Market Value per
         Option Share on the option surrender date or (B) the highest reported
         price per share of Common Stock paid by the tender offeror in
         effecting the Hostile Take-Over.  However, if the surrendered Option
         is designated as an Incentive Option in the Grant Notice, then the
         Take-Over Price shall not exceed the clause (A) price per share.





                                       2.
<PAGE>   3
                 IN WITNESS WHEREOF, Com21, Inc. has caused this Addendum to be
executed by its duly-authorized officer.


                                  COM21, INC.


                                  By:___________________________________________


                                  Title:________________________________________


                                  Date:_________________________________________






                                       3.

<PAGE>   1
                                                                    EXHIBIT 99.5


                                    ADDENDUM
                                       TO
                             STOCK OPTION AGREEMENT


                 The following provisions are hereby incorporated into, and are
hereby made a part of, that certain Stock Option Agreement (the "Option
Agreement") by and between Com21, Inc. (the "Corporation") and
_________________________________________ ("Optionee") evidencing the stock
option (the "Option") granted on _____________________, 199___ (the "Grant
Date") to Optionee under the terms of the Corporation's 1998 Stock Incentive
Plan, and such provisions are effective as of the Grant Date.  All capitalized
terms in this Addendum, to the extent not otherwise defined herein, shall have
the meanings assigned to them in the Option Agreement.

                       INVOLUNTARY TERMINATION FOLLOWING
                    CORPORATE TRANSACTION/CHANGE IN CONTROL

                 1.       To the extent the Option is, in connection with a
Corporate Transaction, to be assumed in accordance with Paragraph 6 of the
Option Agreement, the Option shall not accelerate upon the occurrence of that
Corporate Transaction, and the Option shall accordingly continue, over
Optionee's period of Service after the Corporate Transaction, to become
exercisable for the Option Shares in one or more installments in accordance
with the provisions of the Option Agreement.  However, immediately upon an
Involuntary Termination of Optionee's Service within eighteen (18) months
following such Corporate Transaction, the assumed Option, to the extent
outstanding at the time but not otherwise fully exercisable, shall
automatically accelerate so that the Option shall become immediately
exercisable for all the Option Shares at the time subject to the Option and may
be exercised for any or all of those Option Shares as fully vested shares.

                 2.       The Option shall not accelerate upon the occurrence
of a Change in Control, and the Option shall, over Optionee's period of Service
following such Change in Control, continue to become exercisable for the Option
Shares in one or more installments in accordance with the provisions of the
Option Agreement.  However, immediately upon an Involuntary Termination of
Optionee's Service within eighteen (18) months following the Change in Control,
the Option, to the extent outstanding at the time but not otherwise fully
exercisable, shall automatically accelerate so that the Option shall become
immediately exercisable for all the Option Shares at the time subject to the
Option and may be exercised for any or all of those Option Shares as fully
vested shares.

                 3.       The Option as accelerated under Paragraph 1 or 2
shall remain so exercisable until the earlier of (i) the Expiration Date or
(ii) the expiration of the one (1)-year period measured from the date of the
Optionee's Involuntary Termination.






<PAGE>   2
                 4.       For purposes of this Addendum the following
definitions shall be in effect:

                          (i)     An INVOLUNTARY TERMINATION shall mean the
termination of Optionee's Service by reason of:

                                  (A)      Optionee's involuntary dismissal or
                 discharge by the Corporation for reasons other than
                 Misconduct, or

                                  (B)      Optionee's voluntary resignation
                 following (A) a change in Optionee's position with the
                 Corporation (or Parent or Subsidiary employing Optionee) which
                 materially reduces Optionee's duties and responsibilities or
                 the level of management to which Optionee reports, (B) a
                 reduction in Optionee's level of compensation (including base
                 salary, fringe benefits and target bonus under any corporate
                 performance based bonus or incentive programs) by more than
                 fifteen percent (15%) or (C) a relocation of Optionee's place
                 of employment by more than fifty (50) miles, provided and only
                 if such change, reduction or relocation is effected by the
                 Corporation without Optionee's consent.

                          (ii)    A CHANGE IN CONTROL shall be deemed to occur
         in the event of a change in ownership or control of the Corporation
         effected through either of the following transactions:

                                  (A)      the acquisition, directly or
                 indirectly, by any person or related group of persons (other
                 than the Corporation or a person that directly or indirectly
                 controls, is controlled by, or is under common control with,
                 the Corporation) of beneficial ownership (within the meaning
                 of Rule 13d-3 of the 1934 Act) of securities possessing more
                 than fifty percent (50%) of the total combined voting power of
                 the Corporation's outstanding securities pursuant to a tender
                 or exchange offer made directly to the Corporation's
                 stockholders, or

                                  (B)      a change in the composition of the
                 Board over a period of thirty-six (36) consecutive months or
                 less such that a majority of the Board members ceases, by
                 reason of one or more contested elections for Board
                 membership, to be comprised of individuals who either (i) have
                 been Board members continuously since the beginning of such
                 period or (ii) have been elected or nominated for election as
                 Board members during such period by at least a majority of the
                 Board members described in clause (i) who were still in office
                 at the time the Board approved such election or nomination.





                                       2.
<PAGE>   3
                 5.       The provisions of Paragraph 1 of this Addendum shall
govern the period for which the Option is to remain exercisable following the
Involuntary Termination of Optionee's Service within eighteen (18) months after
the Corporate Transaction or Change in Control and shall supersede any
provisions to the contrary in Paragraph 5 of the Option Agreement.

                 IN WITNESS WHEREOF, Com21, Inc. has caused this Addendum to be
executed by its duly-authorized officer as of the Effective Date specified
below.


                                  COM21, INC.


                                  By:___________________________________________


                                  Title:________________________________________


                                  Date:_________________________________________







                                       3.

<PAGE>   1
                                                                    EXHIBIT 99.6

                                  COM21, INC.

                            STOCK ISSUANCE AGREEMENT


                 AGREEMENT made this _____ day of ___________________ 19____,
by and between Com21, Inc., a Delaware corporation, and
__________________________________________________, a Participant in the
Corporation's 1998 Stock Incentive Plan.

                 All capitalized terms in this Agreement shall have the meaning
assigned to them in this Agreement or in the attached Appendix.

         A.      PURCHASE OF SHARES

                 1.       PURCHASE.  Participant hereby purchases _____________
shares of Common Stock (the "Purchased Shares") pursuant to the provisions of
the Stock Issuance Program at the purchase price of $______ per share (the
"Purchase Price").

                 2.       PAYMENT.  Concurrently with the delivery of this
Agreement to the Corporation, Participant shall pay the Purchase Price for the
Purchased Shares in cash or check payable to the Corporation and shall deliver
a duly-executed blank Assignment Separate from Certificate (in the form
attached hereto as Exhibit I) with respect to the Purchased Shares.

                 3.       STOCKHOLDER RIGHTS.  Until such time as the
Corporation exercises the Repurchase Right, Participant (or any successor in
interest) shall have all the rights of a stockholder (including voting,
dividend and liquidation rights) with respect to the Purchased Shares, subject,
however, to the transfer restrictions of this Agreement.

                 4.       ESCROW.  The Corporation shall have the right to hold
the Purchased Shares in escrow until those shares have vested in accordance
with the Vesting Schedule.

                 5.       COMPLIANCE WITH LAW.  Under no circumstances shall
shares of Common Stock or other assets be issued or delivered to Participant
pursuant to the provisions of this Agreement unless, in the opinion of counsel
for the Corporation or its successors, there shall have been compliance with
all applicable requirements of Federal and state securities laws, all
applicable listing requirements of any stock exchange (or the Nasdaq National
Market, if applicable) on which the Common Stock is at the time listed for
trading and all other requirements of law or of any regulatory bodies having
jurisdiction over such issuance and delivery.

         B.      TRANSFER RESTRICTIONS

                 1.       RESTRICTION ON TRANSFER.  Except for any Permitted
Transfer, Participant shall not transfer, assign, encumber or otherwise dispose
of any of the Purchased Shares which are subject to the Repurchase Right.




<PAGE>   2
                 2.       RESTRICTIVE LEGEND.  The stock certificate for the
Purchased Shares shall be endorsed with the following restrictive legend:

                          "The shares represented by this certificate are
         unvested and subject to certain repurchase rights granted to the
         Corporation and accordingly may not be sold, assigned, transferred,
         encumbered, or in any manner disposed of except in conformity with the
         terms of a written agreement dated ____________, 199__ between the
         Corporation and the registered holder of the shares (or the
         predecessor in interest to the shares).  A copy of such agreement is
         maintained at the Corporation's principal corporate offices."

                 3.       TRANSFEREE OBLIGATIONS.  Each person (other than the
Corporation) to whom the Purchased Shares are transferred by means of a
Permitted Transfer must, as a condition precedent to the validity of such
transfer, acknowledge in writing to the Corporation that such person is bound
by the provisions of this Agreement and that the transferred shares are subject
to the Repurchase Right to the same extent such shares would be so subject if
retained by Participant.

         C.      REPURCHASE RIGHT

                 1.       GRANT.  The Corporation is hereby granted the right
(the "Repurchase Right"), exercisable at any time during the ninety (90)-day
period following the date Participant ceases for any reason to remain in
Service, to repurchase at the Purchase Price all or any portion of the Purchased
Shares in which Participant is not, at the time of his or her cessation of
Service, vested in accordance with the Vesting Schedule or the special vesting
acceleration provisions of Paragraph C.5 of this Agreement (such shares to be
hereinafter referred to as the "Unvested Shares").

                 2.       EXERCISE OF THE REPURCHASE RIGHT.  The Repurchase
Right shall be exercisable by written notice delivered to each Owner of the
Unvested Shares prior to the expiration of the ninety (90)-day exercise period.
The notice shall indicate the number of Unvested Shares to be repurchased and
the date on which the repurchase is to be effected, such date to be not more
than thirty (30) days after the date of such notice.  The certificates
representing the Unvested Shares to be repurchased shall be delivered to the
Corporation on or before the close of business on the date specified for the
repurchase.  Concurrently with the receipt of such stock certificates, the
Corporation shall pay to Owner, in cash or cash equivalent (including the
cancellation of any purchase-money indebtedness), an amount equal to the
Purchase Price previously paid for the Unvested Shares to be repurchased from
Owner.

                 3.       TERMINATION OF THE REPURCHASE RIGHT.  The Repurchase
Right shall terminate with respect to any Unvested Shares for which it is not
timely exercised under Paragraph C.2.  In addition, the Repurchase Right shall
terminate and cease to be exercisable with respect to any and all Purchased
Shares in which Participant vests in accordance with the following Vesting
Schedule:





                                       2.
<PAGE>   3
                               (i)         Upon Participant's completion of one
         (1) year of Service measured from ______________, 199__, Participant
         shall acquire a vested interest in, and the Repurchase Right shall
         lapse with respect to, twenty-five percent (25%) of the Purchased
         Shares.

                              (ii)         Participant shall acquire a vested
         interest in, and the Repurchase Right shall lapse with respect to, the
         remaining Purchased Shares in a series of thirty six (36) successive
         equal monthly installments upon Participant's completion of each
         additional month of Service over the thirty-six (36)-month period
         measured from the initial vesting date under subparagraph (i) above.

                 4.       RECAPITALIZATION.  Any new, substituted or additional
securities or other property (including cash paid other than as a regular cash
dividend) which is by reason of any Recapitalization distributed with respect
to the Purchased Shares shall be immediately subject to the Repurchase Right
and any escrow requirements hereunder, but only to the extent the Purchased
Shares are at the time covered by such right or escrow requirements.
Appropriate adjustments to reflect such distribution shall be made to the
number and/or class of securities subject to this Agreement and to the price
per share to be paid upon the exercise of the Repurchase Right in order to
reflect the effect of any such Recapitalization upon the Corporation's capital
structure; provided, however, that the aggregate purchase price shall remain
the same.

                 5.       CORPORATE TRANSACTION.

                          (a)     Immediately prior to the consummation of any
Corporate Transaction, the Repurchase Right shall automatically lapse in its
entirety and the Purchased Shares shall vest in full, except to the extent the
Repurchase Right is to be assigned to the successor corporation (or parent
thereof) in connection with the Corporate Transaction.

                          (b)     To the extent the Repurchase Right remains in
effect following a Corporate Transaction, such right shall apply to the new
capital stock or other property (including any cash payments) received in
exchange for the Purchased Shares in consummation of the Corporate Transaction,
but only to the extent the Purchased Shares are at the time covered by such
right.  Appropriate adjustments shall be made to the price per share payable
upon exercise of the Repurchase Right to reflect the effect of the Corporate
Transaction upon the Corporation's capital structure; provided, however, that
the aggregate purchase price shall remain the same.  The new securities or
other property (including cash payments) issued or distributed with respect to
the Purchased Shares in consummation of the Corporate Transaction shall
immediately be deposited in escrow with the Corporation (or the successor
entity) and shall not be released from escrow until Participant vests in such
securities or other property in accordance with the same Vesting Schedule in
effect for the Purchased Shares.





                                       3.
<PAGE>   4
                          (c)     The Repurchase Right may also be subject to
termination in whole or in part on an accelerated basis, and the Purchased
Shares subject to immediate vesting, in accordance with the terms of any
special Addendum attached to this Agreement.

         D.      SPECIAL TAX ELECTION

                 1.       SECTION 83(b) ELECTION .  Under Code Section 83, the
excess of the fair market value of the Purchased Shares on the date any
forfeiture restrictions applicable to such shares lapse over the Purchase Price
paid for such shares will be reportable as ordinary income on the lapse date.
For this purpose, the term "forfeiture restrictions" includes the right of the
Corporation to repurchase the Purchased Shares pursuant to the Repurchase
Right.  Participant may elect under Code Section 83(b) to be taxed at the time
the Purchased Shares are acquired, rather than when and as such Purchased
Shares cease to be subject to such forfeiture restrictions.  Such election must
be filed with the Internal Revenue Service within thirty (30) days after the
date of this Agreement.  Even if the fair market value of the Purchased Shares
on the date of this Agreement equals the Purchase Price paid (and thus no tax
is payable), the election must be made to avoid adverse tax consequences in the
future.  THE FORM FOR MAKING THIS ELECTION IS ATTACHED AS EXHIBIT II HERETO.
PARTICIPANT UNDERSTANDS THAT FAILURE TO MAKE THIS FILING WITHIN THE APPLICABLE
THIRTY (30)-DAY PERIOD WILL RESULT IN THE RECOGNITION OF ORDINARY INCOME AS THE
FORFEITURE RESTRICTIONS LAPSE.

                 2.       FILING RESPONSIBILITY.  PARTICIPANT ACKNOWLEDGES THAT
IT IS PARTICIPANT'S SOLE RESPONSIBILITY, AND NOT THE CORPORATION'S, TO FILE A
TIMELY ELECTION UNDER CODE SECTION 83(b), EVEN IF PARTICIPANT REQUESTS THE
CORPORATION OR ITS REPRESENTATIVES TO MAKE THIS FILING ON HIS OR HER BEHALF.

         E.      GENERAL PROVISIONS

                 1.       ASSIGNMENT.  The Corporation may assign the
Repurchase Right to any person or entity selected by the Board, including
(without limitation) one or more stockholders of the Corporation.

                 2.       NO EMPLOYMENT OR SERVICE CONTRACT.  Nothing in this
Agreement or in the Plan shall confer upon Participant any right to continue in
Service for any period of specific duration or interfere with or otherwise
restrict in any way the rights of the Corporation (or any Parent or Subsidiary
employing or retaining Participant) or of Participant, which rights are hereby
expressly reserved by each, to terminate Participant's Service at any time for
any reason, with or without cause.

                 3.       NOTICES.  Any notice required to be given under this
Agreement shall be in writing and shall be deemed effective upon personal
delivery or upon deposit in the U.S. mail, registered or certified, postage
prepaid and properly addressed to the party entitled to such notice





                                       4.
<PAGE>   5
at the address indicated below such party's signature line on this Agreement or
at such other address as such party may designate by ten (10) days advance
written notice under this paragraph to all other parties to this Agreement.

                 4.       NO WAIVER.  The failure of the Corporation in any
instance to exercise the Repurchase Right shall not constitute a waiver of any
other repurchase rights that may subsequently arise under the provisions of
this Agreement or any other agreement between the Corporation and Participant.
No waiver of any breach or condition of this Agreement shall be deemed to be a
waiver of any other or subsequent breach or condition, whether of like or
different nature.

                 5.       CANCELLATION OF SHARES.  If the Corporation shall
make available, at the time and place and in the amount and form provided in
this Agreement, the consideration for the Purchased Shares to be repurchased in
accordance with the provisions of this Agreement, then from and after such
time, the person from whom such shares are to be repurchased shall no longer
have any rights as a holder of such shares (other than the right to receive
payment of such consideration in accordance with this Agreement).  Such shares
shall be deemed purchased in accordance with the applicable provisions hereof,
and the Corporation shall be deemed the owner and holder of such shares,
whether or not the certificates therefor have been delivered as required by
this Agreement.

                 6.       PARTICIPANT UNDERTAKING.  Participant hereby agrees
to take whatever additional action and execute whatever additional documents
the Corporation may deem necessary or advisable in order to carry out or effect
one or more of the obligations or restrictions imposed on either Participant or
the Purchased Shares pursuant to the provisions of this Agreement.

                 7.       AGREEMENT IS ENTIRE CONTRACT.  This Agreement
constitutes the entire contract between the parties hereto with regard to the
subject matter hereof.  This Agreement is made pursuant to the provisions of
the Plan and shall in all respects be construed in conformity with the terms of
the Plan.

                 8.       GOVERNING LAW.  This Agreement shall be governed by,
and construed in accordance with, the laws of the State of California without
resort to that State's conflict-of-laws rules.

                 9.       COUNTERPARTS.  This Agreement may be executed in
counterparts, each of which shall be deemed to be an original, but all of which
together shall constitute one and the same instrument.

                 10.      SUCCESSORS AND ASSIGNS.  The provisions of this
Agreement shall inure to the benefit of, and be binding upon, the Corporation
and its successors and assigns and upon Participant, Participant's assigns and
the legal representatives, heirs and legatees of Participant's estate, whether
or not any such person shall have become a party to this Agreement and have
agreed in writing to join herein and be bound by the terms hereof.





                                       5.
<PAGE>   6
                 IN WITNESS WHEREOF, the parties have executed this Agreement
on the day and year first indicated above.

                                  COM21, INC.


                                  By:___________________________________________


                                  Title:________________________________________


                                  Address:______________________________________

                                  ______________________________________________


                                  ______________________________________________
                                  PARTICIPANT


                                  Address:______________________________________

                                  ______________________________________________





                                       6.
<PAGE>   7

                             SPOUSAL ACKNOWLEDGMENT

         The undersigned spouse of the Participant has read and hereby approves
the foregoing Stock Issuance Agreement.  In consideration of the Corporation's
granting the Participant the right to acquire the Purchased Shares in
accordance with the terms of such Agreement, the undersigned hereby agrees to
be irrevocably bound by all the terms of such Agreement, including (without
limitation) the right of the Corporation (or its assigns) to purchase any
Purchased Shares in which the Participant is not vested at the time of his or
her termination of Service.


                                  ______________________________________________
                                  PARTICIPANT'S SPOUSE

                                  Address:______________________________________

                                  ______________________________________________










                                       7.
<PAGE>   8
                                   EXHIBIT I
                      ASSIGNMENT SEPARATE FROM CERTIFICATE

        FOR VALUE RECEIVED ______________________ hereby sell(s), assign(s) and
transfer(s) unto Com21, Inc. (the "Corporation"), ____ ______________(_______)
shares of the Common Stock of the Corporation standing in his or her name on the
books of the Corporation represented by Certificate No. ___________________
herewith and do(es) hereby irrevocably constitute and appoint
_______________________________ Attorney to transfer the said stock on the books
of the Corporation with full power of substitution in the premises. Dated:
________________, 199__.



                                  Signature_____________________________________







INSTRUCTION:  Please do not fill in any blanks other than the signature line.
Please sign exactly as you would like your name to appear on the issued stock
certificate.  The purpose of this assignment is to enable the Corporation to
exercise the Repurchase Right without requiring additional signatures on the
part of Participant.



<PAGE>   9

                                   EXHIBIT II

                           SECTION 83(b) TAX ELECTION

This statement is being made under Section 83(b) of the Internal Revenue Code,
pursuant to Treas. Reg. Section 1.83-2.

(1)      The taxpayer who performed the services is:

         Name:
         Address:
         Taxpayer Ident. No.:

(2)      The property with respect to which the election is being made is
         ____________ shares of the common stock of Com21, Inc.

(3)      The property was issued on _____________, 199___.

(4)      The taxable year in which the election is being made is the calendar
         year 199__.

(5)      The property is subject to a repurchase right pursuant to which the
         issuer has the right to acquire the property at the original purchase
         price if for any reason taxpayer's service with the issuer terminates.
         The issuer's repurchase right lapses in a series of annual and monthly
         installments over a four (4)-year period ending on ______________.

(6)      The fair market value at the time of transfer (determined without
         regard to any restriction other than a restriction which by its terms
         will never lapse) is $_____________per share.

(7)      The amount paid for such property is $____________ per share.

(8)      A copy of this statement was furnished to Com21, Inc. for whom
         taxpayer rendered the services underlying the transfer of property.

(9)      This statement is executed on ________________________, 199__.


____________________________               _____________________________________
Spouse (if any)                            Taxpayer

This election must be filed with the Internal Revenue Service Center with which
taxpayer files his or her Federal income tax returns and must be made within
thirty (30) days after the execution date of the Stock Issuance Agreement.
This filing should be made by registered or certified mail, return receipt
requested.  Participant must retain two (2) copies of the completed form for
filing with his or her Federal and state tax returns for the current tax year
and an additional copy for his or her records.




<PAGE>   10
                                    APPENDIX


                 The following definitions shall be in effect under the
Agreement:

         A.      AGREEMENT shall mean this Stock Issuance Agreement.

         B.      BOARD shall mean the Corporation's Board of Directors.

         C.      COMMON STOCK shall mean shares of the Corporation's common
stock.

         D.      CODE shall mean the Internal Revenue Code of 1986, as amended.

         E.      CORPORATE TRANSACTION shall mean either of the following
stockholder-approved transactions:

                               (i)         a merger or consolidation in which
         securities possessing more than fifty percent (50%) of the total
         combined voting power of the Corporation's outstanding securities are
         transferred to a person or persons different from the persons holding
         those securities immediately prior to such transaction, or

                              (ii)         the sale, transfer or other
         disposition of all or substantially all of the Corporation's assets in
         complete liquidation or dissolution of the Corporation.

         F.      CORPORATION shall mean Com21, Inc., a Delaware corporation,
and its successors.

         G.      OWNER shall mean Participant and all subsequent holders of the
Purchased Shares who derive their chain of ownership through a Permitted
Transfer from Participant.

         H.      PARENT shall mean any corporation (other than the Corporation)
in an unbroken chain of corporations ending with the Corporation, provided each
corporation in the unbroken chain (other than the Corporation) owns, at the
time of the determination, stock possessing fifty percent (50%) or more of the
total combined voting power of all classes of stock in one of the other
corporations in such chain.

         I.      PARTICIPANT shall mean the person to whom the Purchased Shares
are issued under the Stock Issuance Program.





                                      A-1.
<PAGE>   11
         J.      PERMITTED TRANSFER shall mean (i) a gratuitous transfer of the
Purchased Shares, provided and only if Participant obtains the Corporation's
prior written consent to such transfer, (ii) a transfer of title to the
Purchased Shares effected pursuant to Participant's will or the laws of
intestate succession following Participant's death or (iii) a transfer to the
Corporation in pledge as security for any purchase-money indebtedness incurred
by Participant in connection with the acquisition of the Purchased Shares.

         K.      PLAN shall mean the Corporation's 1998 Stock Incentive Plan.

         L.      PLAN ADMINISTRATOR shall mean either the Board or a committee
of the Board acting in its administrative capacity under the Plan.

         M.      PURCHASE PRICE shall have the meaning assigned to such term in
Paragraph A.1.

         N.      PURCHASED SHARES shall have the meaning assigned to such term
in Paragraph A.1.

         O.      RECAPITALIZATION shall mean any stock split, stock dividend,
recapitalization, combination of shares, exchange of shares or other change
affecting the Corporation's outstanding Common Stock as a class without the
Corporation's receipt of consideration.

         P.      REPURCHASE RIGHT shall mean the right granted to the
Corporation in accordance with Article C.

         Q.      SERVICE shall mean the Participant's performance of services
for the Corporation (or any Parent or Subsidiary) in the capacity of an
employee, subject to the control and direction of the employer entity as to
both the work to be performed and the manner and method of performance, a
non-employee member of the board of directors or a consultant.

         R.      STOCK ISSUANCE PROGRAM shall mean the Stock Issuance Program
under the Plan.

         S.      SUBSIDIARY shall mean any corporation (other than the
Corporation) in an unbroken chain of corporations beginning with the
Corporation, provided each corporation (other than the last corporation) in the
unbroken chain owns, at the time of the determination, stock possessing fifty
percent (50%) or more of the total combined voting power of all classes of
stock in one of the other corporations in such chain.

         T.      VESTING SCHEDULE shall mean the vesting schedule specified in
Paragraph C.3, subject to the special vesting acceleration provisions of
Paragraph C.5.

         U.      UNVESTED SHARES shall have the meaning assigned to such term
in Paragraph C.1.





                                      A-2.

<PAGE>   1

                                                                   EXHIBIT 99.7


                                    ADDENDUM
                                       TO
                            STOCK ISSUANCE AGREEMENT


                 The following provisions are hereby incorporated into, and are
hereby made a part of, that certain Stock Issuance Agreement dated
____________________, 199___(the "Issuance Agreement") by and between Com21,
Inc. (the "Corporation") and ____________________ ("Participant") evidencing
the stock issuance made on such date to Participant under the terms of the
Corporation's 1998 Stock Incentive Plan, and such provisions are effective as
of the date of the Issuance Agreement.  All capitalized terms in this Addendum,
to the extent not otherwise defined herein, shall have the meanings assigned to
such terms in the Issuance Agreement.

                       INVOLUNTARY TERMINATION FOLLOWING
                    CORPORATE TRANSACTION/CHANGE IN CONTROL

                 1.       To the extent the Repurchase Right is assigned to the
successor corporation (or parent thereof) in connection with a Corporate
Transaction, no accelerated vesting of the Purchased Shares shall occur upon
such Corporate Transaction, and the Repurchase Right shall continue to remain
in full force and effect in accordance with the provisions of the Issuance
Agreement.  The Participant shall, over Participant's period of Service
following the Corporate Transaction, continue to vest in the Purchased Shares
in one or more installments in accordance with the provisions of the Issuance
Agreement.

                 2.       No accelerated vesting of the Purchased Shares shall
occur upon a Change in Control, and the Repurchase Right shall continue to
remain in full force and effect in accordance with the provisions of the
Issuance Agreement.  The Participant shall, over Participant's period of
Service following the Change in Control, continue to vest in the Purchased
Shares in one or more installments in accordance with the provisions of the
Issuance Agreement.

                 3.       Immediately upon an Involuntary Termination of
Participant's Service within eighteen (18) months following the Corporate
Transaction or Change in Control, the Repurchase Right shall terminate
automatically and all the Purchased Shares shall vest in full.

                 4.       For purposes of this Addendum, the following
definitions shall be in effect:

                          An INVOLUNTARY TERMINATION shall mean the termination
of Participant's Service by reason of:

                               (i)         Participant's involuntary dismissal
         or discharge by the Corporation for reasons other than Misconduct, or

                              (ii)         Participant's voluntary resignation
         following (A) a change in Participant's position with the Corporation
         (or Parent or Subsidiary






<PAGE>   2
         employing Participant) which materially reduces Participant's duties
         and responsibilities or the level of management to which Participant
         reports, (B) a reduction in Participant's level of compensation
         (including base salary, fringe benefits and target bonus under any
         corporate performance based bonus or incentive programs) by more than
         fifteen percent (15%) or (C) a relocation of Participant's place of
         employment by more than fifty (50) miles, provided and only if such
         change, reduction or relocation is effected by the Corporation without
         Participant's consent.

                          A CHANGE IN CONTROL shall be deemed to occur in the
event of a change in ownership or control of the Corporation effected through
either of the following transactions:

                               (i)         the acquisition, directly or
         indirectly, by any person or related group of persons (other than the
         Corporation or a person that directly or indirectly controls, is
         controlled by, or is under common control with, the Corporation) of
         beneficial ownership (within the meaning of Rule 13d-3 of the 1934
         Act) of securities possessing more than fifty percent (50%) of the
         total combined voting power of the Corporation's outstanding
         securities pursuant to a tender or exchange offer made directly to the
         Corporation's stockholders, or

                              (ii)         a change in the composition of the
         Board over a period of thirty-six (36) consecutive months or less such
         that a majority of the Board members ceases, by reason of one or more
         contested elections for Board membership, to be comprised of
         individuals who either (A) have been Board members continuously since
         the beginning of such period or (B) have been elected or nominated for
         election as Board members during such period by at least a majority of
         the Board members described in clause (A) who were still in office at
         the time the Board approved such election or nomination.

                 MISCONDUCT shall mean the commission of any act of fraud,
embezzlement or dishonesty by the Participant, any unauthorized use or
disclosure by the Participant of confidential information or trade secrets of
the Corporation (or any Parent or Subsidiary), or any other intentional
misconduct by the Participant adversely affecting the business or affairs of
the Corporation (or any Parent or Subsidiary) in a material manner.  The
foregoing definition shall not be deemed to be inclusive of all the acts or
omissions which the Corporation (or any Parent or Subsidiary) may consider as
grounds for the dismissal or discharge of the Participant or other person in
the Service of the Corporation (or any Parent or Subsidiary).





                                       2.
<PAGE>   3
                 IN WITNESS WHEREOF, Com21, Inc. has caused this Addendum to be
executed by its duly-authorized officer.


                                  COM21, INC.


                                  By:___________________________________________


                                  Title:________________________________________


                                  Date:_________________________________________









                                       3.

<PAGE>   1
                                                                    EXHIBIT 99.8

                                                                   INITIAL GRANT

                                  COM21, INC.
                    NOTICE OF GRANT OF NON-EMPLOYEE DIRECTOR
                             AUTOMATIC STOCK OPTION

                 Notice is hereby given of the following option grant (the
"Option") to purchase shares of the Common Stock of Com21, Inc. (the
"Corporation"):

                 Optionee:______________________________________________________

                 Grant Date:____________________________________________________

                 Exercise Price:  $___________________________________ per share

                 Number of Option Shares: 15,000 shares

                 Expiration Date:_______________________________________________

                 Type of Option:  Non-Statutory Stock Option
                 Date Exercisable:  Immediately Exercisable

                 Vesting Schedule:  The Option Shares shall initially be
                 unvested and subject to repurchase by the Corporation at the
                 Exercise Price paid per share.  Optionee shall acquire a
                 vested interest in, and the Corporation's repurchase right
                 shall accordingly lapse with respect to, the Option Shares in
                 a series of four (4) successive equal annual installments upon
                 Optionee's completion of each year of service as a member of
                 the Corporation's Board of Directors (the "Board") over the
                 four (4) year period measured from the Grant Date.  In no
                 event shall any additional Option Shares vest after Optionee's
                 cessation of Board service.

                 Optionee understands and agrees that the Option is granted
subject to and in accordance with the terms of the automatic option grant
program under the Com21, Inc. 1998 Stock Incentive Plan (the "Plan").  Optionee
further agrees to be bound by the terms of the Plan and the terms of the Option
as set forth in the Automatic Stock Option Agreement attached hereto as Exhibit
A.

                 Optionee hereby acknowledges receipt of a copy of the official
prospectus for the Plan in the form attached hereto as Exhibit B.  A copy of
the Plan is available upon request made to the Corporate Secretary at the
Corporation's principal offices.





<PAGE>   2
                 REPURCHASE RIGHT.  OPTIONEE HEREBY AGREES THAT ALL UNVESTED
OPTION SHARES ACQUIRED UPON THE EXERCISE OF THE OPTION SHALL BE SUBJECT TO A
REPURCHASE RIGHT EXERCISABLE BY THE CORPORATION AND ITS ASSIGNS.  THE TERMS OF
SUCH RIGHT SHALL BE SPECIFIED IN A STOCK PURCHASE AGREEMENT, IN FORM AND
SUBSTANCE SATISFACTORY TO THE CORPORATION, EXECUTED BY OPTIONEE AT THE TIME OF
THE OPTION EXERCISE.

                 No Impairment of Rights.  Nothing in this Notice or the
attached Automatic Stock Option Agreement or in the Plan shall interfere with
or otherwise restrict in any way the rights of the Corporation and the
Corporation's stockholders to remove Optionee from the Board at any time in
accordance with the provisions of applicable law.

                 Definitions.  All capitalized terms in this Notice shall have
the meaning assigned to them in this Notice or in the attached Automatic Stock
Option Agreement.

________________________, 199__
         Date





                                  COM21, INC.


                                  By:___________________________________________


                                  Title:________________________________________


                                  ______________________________________________
                                  OPTIONEE


                                  Address:______________________________________

                                  ______________________________________________






ATTACHMENTS
Exhibit A - Automatic Stock Option Agreement
Exhibit B - Plan Summary and Prospectus




                                       2.
<PAGE>   3


                                   EXHIBIT A


                        AUTOMATIC STOCK OPTION AGREEMENT

<PAGE>   4

                                    EXHIBIT B


                           PLAN SUMMARY AND PROSPECTUS



<PAGE>   1
                                                                   EXHIBIT 99.9

                                                                   ANNUAL GRANT

                                   COM21, INC.
                    NOTICE OF GRANT OF NON-EMPLOYEE DIRECTOR
                             AUTOMATIC STOCK OPTION


                 Notice is hereby given of the following option grant (the
"Option") to purchase shares of the Common Stock of Com21, Inc. (the
"Corporation"):

                 Optionee:______________________________________________________

                 Grant Date:____________________________________________________

                 Exercise Price:  $___________________________________ per share

                 Number of Option Shares: 5,000 shares

                 Expiration Date:_______________________________________________

                 Type of Option:  Non-Statutory Stock Option
                 Date Exercisable:  Immediately Exercisable

                 Vesting Schedule:  The Option Shares shall initially be
                 unvested and subject to repurchase by the Corporation at the
                 Exercise Price paid per share.  Optionee shall acquire a
                 vested interest in, and the Corporation's repurchase right
                 shall accordingly lapse with respect to, the Option Shares in
                 a series of two (2) successive equal annual installments upon
                 the Optionee's completion of each year of service as a member
                 of the Corporation's Board of Directors (the "Board") over the
                 two (2) year period measured from the Grant Date.  In no event
                 shall any additional Option Shares vest after Optionee's
                 cessation of Board service.

                 Optionee understands and agrees that the Option is granted
subject to and in accordance with the terms of the automatic option grant
program under the Com21, Inc. 1998 Stock Incentive Plan (the "Plan").  Optionee
further agrees to be bound by the terms of the Plan and the terms of the Option
as set forth in the Automatic Stock Option Agreement attached hereto as Exhibit
A.

                 Optionee hereby acknowledges receipt of a copy of the official
prospectus for the Plan in the form attached hereto as Exhibit B.  A copy of
the Plan is available upon request made to the Corporate Secretary at the
Corporation's principal offices.




<PAGE>   2
                 REPURCHASE RIGHT.  OPTIONEE HEREBY AGREES THAT ALL UNVESTED
OPTION SHARES ACQUIRED UPON THE EXERCISE OF THE OPTION SHALL BE SUBJECT TO A
REPURCHASE RIGHT EXERCISABLE BY THE CORPORATION AND ITS ASSIGNS.  THE TERMS OF
SUCH RIGHT SHALL BE SPECIFIED IN A STOCK PURCHASE AGREEMENT, IN FORM AND
SUBSTANCE SATISFACTORY TO THE CORPORATION, EXECUTED BY OPTIONEE AT THE TIME OF
THE OPTION EXERCISE.

                 No Impairment of Rights.  Nothing in this Notice or the
attached Automatic Stock Option Agreement or in the Plan shall interfere with
or otherwise restrict in any way the rights of the Corporation and the
Corporation's stockholders to remove Optionee from the Board at any time in
accordance with the provisions of applicable law.

                 Definitions.  All capitalized terms in this Notice shall have
the meaning assigned to them in this Notice or in the attached Automatic Stock
Option Agreement.

________________________, 199__
         Date

                                  COM21, INC.


                                  By:___________________________________________


                                  Title:________________________________________


                                  ______________________________________________
                                  OPTIONEE


                                  Address:______________________________________

                                  ______________________________________________



ATTACHMENTS
Exhibit A - Automatic Stock Option Agreement
Exhibit B - Plan Summary and Prospectus





                                       2.
<PAGE>   3
                                    EXHIBIT A

                        AUTOMATIC STOCK OPTION AGREEMENT






<PAGE>   4
                                    EXHIBIT B

                           PLAN SUMMARY AND PROSPECTUS







<PAGE>   1
                                                                   EXHIBIT 99.10


                                  COM21, INC.
                        AUTOMATIC STOCK OPTION AGREEMENT


RECITALS

         A.      The Corporation has implemented an automatic option grant
program under the Plan pursuant to which eligible non-employee members of the
Board will automatically receive special option grants at periodic intervals
over their period of Board service in order to provide such individuals with a
meaningful incentive to continue to serve as members of the Board.

         B.      Optionee is an eligible non-employee Board member, and this
Agreement is executed pursuant to, and is intended to carry out the purposes
of, the Plan in connection with the automatic grant of an option to purchase
shares of Common Stock under the Plan.

         C.      All capitalized terms in this Agreement shall have the meaning
assigned to them in the attached Appendix.

                 NOW, THEREFORE, it is hereby agreed as follows:

                 1.       GRANT OF OPTION.  The Corporation hereby grants to
Optionee, as of the Grant Date, a Non-Statutory Option to purchase up to the
number of Option Shares specified in the Grant Notice.  The Option Shares shall
be purchasable from time to time during the option term specified in Paragraph
2 at the Exercise Price.

                 2.       OPTION TERM.  This option shall have a term of ten
(10) years measured from the Grant Date and shall accordingly expire at the
close of business on the Expiration Date, unless sooner terminated in
accordance with Paragraph 5, 6 or 7.

                 3.       LIMITED TRANSFERABILITY.  This option may, in
connection with the Optionee's estate plan, be assigned in whole or in part
during Optionee's lifetime to one or more members of the Optionee's immediate
family or to a trust established for the exclusive benefit of one or more such
family members. The assigned portion shall be exercisable only by the person or
persons who acquire a proprietary interest in the option pursuant to such
assignment. The terms applicable to the assigned portion shall be the same as
those in effect for this option immediately prior to such assignment.  Should
the Optionee die while holding this option, then this option shall be
transferred in accordance with Optionee's will or the laws of descent and
distribution.



<PAGE>   2
                 4.       EXERCISABILITY/VESTING.

                          (a)     This option shall be immediately exercisable
for any or all of the Option Shares, whether or not the Option Shares are at
the time vested in accordance with the Vesting Schedule, and shall remain so
exercisable until the Expiration Date or sooner termination of the option term
under Paragraph 5, 6 or 7.

                          (b)     Optionee shall, in accordance with the
Vesting Schedule set forth in the Grant Notice, vest in the Option Shares in
one or more installments over his or her period of Board service.  Vesting in
the Option Shares may be accelerated pursuant to the provisions of Paragraph 5,
6 or 7.  In no event, however, shall any additional Option Shares vest
following Optionee's cessation of service as a Board member.

                 5.       CESSATION OF BOARD SERVICE.  Should Optionee's
service as a Board member cease while this option remains outstanding, then the
option term specified in Paragraph 2 shall terminate (and this option shall
cease to be outstanding) prior to the Expiration Date in accordance with the
following provisions:

                          (a)     Should Optionee cease to serve as a Board
member for any reason (other than death or Permanent Disability) while this
option is outstanding, then the period for exercising this option shall be
reduced to a twelve (12)-month period (commencing with the date of such
cessation of Board service), but in no event shall this option be exercisable
at any time after the Expiration Date.  During such limited period of
exercisability, this option may not be exercised in the aggregate for more than
the number of Option Shares (if any) in which Optionee is vested on the date of
his or her cessation of Board service. Upon the earlier  of (i) the expiration
of such twelve (12)- month period or (ii) the specified Expiration Date, the
option shall terminate and cease to be exercisable with respect to any vested
Option Shares for which the option has not been exercised.

                          (b)     Should Optionee die during the twelve
(12)-month period following his or her cessation of Board service and hold this
option, at the time of his or her death, then the personal representative of
Optionee's estate or the person or persons to whom the option is transferred
pursuant to Optionee's will or in accordance with the laws of descent and
distribution shall have the right to exercise this option for any or all of the
Option Shares in which Optionee is vested at the time of Optionee's cessation
of Board service (less any Option Shares purchased by Optionee after such
cessation of Board service but prior to death).  Such right of exercise shall
terminate, and this option shall accordingly cease to be exercisable for such
vested Option Shares, upon the earlier of (i) the expiration of the twelve
(12)- month period measured from the date of Optionee's cessation of Board
service or (ii) the specified Expiration Date.





                                       2.
<PAGE>   3
                          (c)      Should Optionee cease service as a Board
member by reason of death or Permanent Disability, then all Option Shares at
the time subject to this option but not otherwise vested shall vest in full so
that this option may be exercised for any or all of the Option Shares as fully
vested shares of Common Stock at any time prior to the earlier of (i) the
expiration of the twelve (12)-month period measured from the date of Optionee's
cessation of Board service or (ii) the specified Expiration Date, whereupon
this option shall terminate and cease to be outstanding.

                          (d)     Upon Optionee's cessation of Board service
for any reason other than death or Permanent Disability, this option shall
immediately terminate and cease to be outstanding with respect to any and all
Option Shares in which Optionee is not otherwise at that time vested in
accordance with the normal Vesting Schedule or the special vesting acceleration
provisions of Paragraph 6 or 7 below.

                 6.       CORPORATE TRANSACTION.

                          (a)     In the event of a Corporate Transaction, all
Option Shares at the time subject to this option but not otherwise vested shall
automatically vest so that this option shall, immediately prior to the
specified effective date for the Corporate Transaction, become exercisable for
all of the Option Shares at the time subject to this option and may be
exercised for all or any portion of such shares as fully vested shares of
Common Stock.  Immediately following the consummation of the Corporate
Transaction, this option shall terminate and cease to be outstanding, except to
the extent assumed by the successor corporation or its parent company.

                          (b)     All outstanding repurchase rights shall also
terminate automatically, and the unvested shares of Common Stock subject to
those terminated rights shall immediately vest in full, in the event of any
Corporate Transaction.

                          (c)     If this option is assumed in connection with
a Corporate Transaction, then this option shall be appropriately adjusted,
immediately after such Corporate Transaction, to apply to the number and class
of securities which would have been issuable to Optionee in consummation of
such Corporate Transaction had the option been exercised immediately prior to
such Corporate Transaction, and appropriate adjustments shall also be made to
the Exercise Price, provided the aggregate Exercise Price shall remain the
same.

                 7.               CHANGE IN CONTROL/HOSTILE TAKE-OVER.

                          (a)     All Option Shares subject to this option at
the time of a Change in Control but not otherwise vested shall automatically
vest so that this option shall, immediately prior to the effective date of such
Change in Control, become exercisable for all of the Option Shares at the time
subject to this option and may be exercised for all or any portion of such
shares as fully-vested shares of Common Stock.  This option shall remain
exercisable for such fully-vested Option Shares until the earliest to occur of
(i) the specified Expiration Date, (ii) the





                                       3.
<PAGE>   4

sooner termination of this option in accordance with Paragraph 5 or 6 or (iii)
the surrender of this option under Paragraph 7(b).

                          (b)     All outstanding repurchase rights shall also
terminate automatically, and the unvested shares of Common Stock subject to
those terminated rights shall immediately vest in full, in the event of any
Change in Control.

                          (c)     Optionee shall have an unconditional right,
exercisable at the time during the thirty (30)-day period immediately following
the consummation of a Hostile Take-Over to surrender this option to the
Corporation in exchange for a cash distribution from the Corporation in an
amount equal to the excess of (i) the Take-Over Price of the Option Shares at
the time subject to the surrendered option (whether or not those Option Shares
are otherwise at the time vested) over (ii) the aggregate Exercise Price
payable for such shares.  This Paragraph 7(b) limited stock appreciation right
shall in all events terminate upon the expiration or sooner termination of the
option term and may not be assigned or transferred by Optionee.

                          (d)     To exercise the Paragraph 7(b) limited stock
appreciation right, Optionee must, during the applicable thirty (30)-day
exercise period, provide the Corporation with written notice of the option
surrender in which there is specified the number of Option Shares as to which
the option is being surrendered.  Such notice must be accompanied by the return
of Optionee's copy of this Agreement, together with any written amendments to
such Agreement.  The cash distribution shall be paid to Optionee within five
(5) business days following such delivery date.  The exercise of such limited
stock appreciation right in accordance with the terms of this Paragraph 7 has
been pre-approved pursuant to the express provisions of the Automatic Option
Grant Program, and neither the approval of the Plan Administrator nor the
consent of the Board shall be required at the time of the actual option
surrender and cash distribution.  Upon receipt of the cash distribution, this
option shall be cancelled with respect to the shares subject to the surrendered
option (or the surrendered portion), and Optionee shall cease to have any
further right to acquire those Option Shares under this Agreement.  The option
shall, however, remain outstanding for the balance of the Option Shares (if
any) in accordance with the terms and provisions of this Agreement, and the
Corporation shall accordingly issue a replacement stock option agreement
(substantially in the same form as this Agreement) for those remaining Option
Shares.

                 8.       ADJUSTMENT IN OPTION SHARES.  Should any change be
made to the Common Stock by reason of any stock split, stock dividend,
recapitalization, combination of shares, exchange of shares or other change
affecting the outstanding Common Stock as a class without the Corporation's
receipt of consideration, appropriate adjustments shall be made to (i) the
total number and/or class of securities subject to this option and (ii) the
Exercise Price in order to reflect such change and thereby preclude a dilution
or enlargement of benefits hereunder.

                 9.       STOCKHOLDER RIGHTS.  The holder of this option shall
not have any stockholder rights with respect to the Option Shares until such
person shall have exercised the option, paid the Exercise Price and become a
holder of record of the purchased shares.





                                       4.
<PAGE>   5
                 10.      MANNER OF EXERCISING OPTION.

                          (a)     In order to exercise this option with respect
to all or any part of the Option Shares for which this option is at the time
exercisable, Optionee (or any other person or persons exercising the option)
must take the following actions:

                                       (i)         To the extent the option is
         exercised for vested Option Shares, execute and deliver to the
         Corporation a Notice of Exercise for the Option Shares for which the
         option is exercised.  To the extent this option is exercised for
         unvested Option Shares, execute and deliver to the Corporation a
         Purchase Agreement for those unvested Option Shares.

                                       (ii)        Pay the aggregate Exercise
         Price for the purchased shares in one or more of the following forms:

                                        (A)     cash or check made payable to
                 the Corporation,

                                        (B)     shares of Common Stock held by
                 Optionee (or any other person or persons exercising the
                 option) for the requisite period necessary to avoid a charge
                 to the Corporation's earnings for financial reporting purposes
                 and valued at Fair Market Value on the Exercise Date, or

                                        (C)     to the extent the option is
                 exercised for vested Option Shares, through a special sale and
                 remittance procedure pursuant to which Optionee (or any other
                 person or persons exercising the option) shall concurrently
                 provide irrevocable instructions (I) to a
                 Corporation-designated brokerage firm to effect the immediate
                 sale of the purchased shares and remit to the Corporation, out
                 of the sale proceeds available on the settlement date,
                 sufficient funds to cover the aggregate Exercise Price payable
                 for the purchased shares plus all applicable Federal, state
                 and local income and employment taxes required to be withheld
                 by the Corporation by reason of such exercise and (II) to the
                 Corporation to deliver the certificates for the purchased
                 shares directly to such brokerage firm in order to complete
                 the sale.

                                     (iii)         Furnish to the Corporation
         appropriate documentation that the person or persons exercising the
         option (if other than Optionee) have the right to exercise this
         option.





                                       5.
<PAGE>   6
                          (b)     Except to the extent the sale and remittance
procedure is utilized in connection with the option exercise, payment of the
Exercise Price must accompany the Notice of Exercise (or the Purchase
Agreement) delivered to the Corporation in connection with the option exercise.

                          (c)     As soon after the Exercise Date as practical,
the Corporation shall issue to or on behalf of Optionee (or any other person or
persons exercising this option) a certificate for the purchased Option Shares,
with the appropriate legends affixed thereto.  To the extent any such Option
Shares are unvested, the certificates for those Option Shares shall be endorsed
with an appropriate legend evidencing the Corporation's repurchase rights and
may be held in escrow with the Corporation until such shares vest.

                          (d)     In no event may this option be exercised for
any fractional shares.

                 11.      NO IMPAIRMENT OF RIGHTS.  This Agreement shall not in
any way affect the right of the Corporation to adjust, reclassify, reorganize
or otherwise make changes in its capital or business structure or to merge,
consolidate, dissolve, liquidate or sell or transfer all or any part of its
business or assets.  In addition, this Agreement shall not in any way be
construed or interpreted so as to affect adversely or otherwise impair the
right of the Corporation or the stockholders to remove Optionee from the Board
at any time in accordance with the provisions of applicable law.

                 12.      COMPLIANCE WITH LAWS AND REGULATIONS.

                          (a)     The exercise of this option and the issuance
of the Option Shares upon such exercise shall be subject to compliance by the
Corporation and Optionee with all applicable requirements of law relating
thereto and with all applicable regulations of any stock exchange (or the
Nasdaq National Market, if applicable) on which the Common Stock may be listed
for trading at the time of such exercise and issuance.

                          (b)     The inability of the Corporation to obtain
approval from any regulatory body having authority deemed by the Corporation to
be necessary to the lawful issuance and sale of any Common Stock pursuant to
this option shall relieve the Corporation of any liability with respect to the
non-issuance or sale of the Common Stock as to which such approval shall not
have been obtained.  The Corporation, however, shall use its best efforts to
obtain all such approvals.

                 13.      SUCCESSORS AND ASSIGNS.  Except to the extent
otherwise provided in Paragraph 3 or 6, the provisions of this Agreement shall
inure to the benefit of, and be binding upon, the Corporation and its
successors and assigns and Optionee, Optionee's assigns and the legal
representatives, heirs and legatees of Optionee's estate.





                                       6.
<PAGE>   7
                 14.      NOTICES.  Any notice required to be given or
delivered to the Corporation under the terms of this Agreement shall be in
writing and addressed to the Corporation at its principal corporate offices.
Any notice required to be given or delivered to Optionee shall be in writing
and addressed to Optionee at the address indicated below Optionee's signature
line on the Grant Notice.  All notices shall be deemed effective upon personal
delivery or upon deposit in the U.S. mail, postage prepaid and properly
addressed to the party to be notified.

                 15.      CONSTRUCTION.  This Agreement and the option
evidenced hereby are made and granted pursuant to the Plan and are in all
respects limited by and subject to the terms of the Plan.

                 16.      GOVERNING LAW.  The interpretation, performance and
enforcement of this Agreement shall be governed by the laws of the State of
California without resort to that State's conflict-of-laws rules.





                                       7.
<PAGE>   8
                                   EXHIBIT I

                               NOTICE OF EXERCISE


                 I hereby notify Com21, Inc. (the "Corporation") that I elect
to purchase __________ shares of the Corporation's Common Stock (the "Purchased
Shares") at the option exercise price of $___________ per share (the "Exercise
Price") pursuant to that certain option (the "Option") granted to me under the
Corporation's 1998 Stock Incentive Plan on ____________________, 199___.

                 Concurrently with the delivery of this Exercise Notice to the
Corporation, I shall hereby pay to the Corporation the Exercise Price for the
Purchased Shares in accordance with the provisions of my agreement with the
Corporation (or other documents) evidencing the Option and shall deliver
whatever additional documents may be required by such agreement as a condition
for exercise.  Alternatively, I may utilize the special broker-dealer sale and
remittance procedure specified in my agreement to effect payment of the
Exercise Price for any Purchased Shares in which I am vested at the time of
exercise of the Option.


_____________________________, 199__                                            
Date                                                                            
                                                                                
                                     ___________________________________________
                                     Optionee                                   
                                                                                
                                     Address:___________________________________
                                                                                
                                     ___________________________________________
                                                                                
                                                                                
Print name in exact manner                                                      
it is to appear on the                                                          
stock certificate:                                                              
                                     ___________________________________________
                                                                                
Address to which certificate                                                    
is to be sent, if different                                                     
from address above:                                                             
                                     ___________________________________________
                                                                                
                                     ___________________________________________
                                                                                
                                                                                
Social Security Number:              ___________________________________________
                                                                                
                                     ___________________________________________
                                                                                





<PAGE>   9

                                    APPENDIX


         The following definitions shall be in effect under the Agreement:

         A.      AGREEMENT shall mean this Automatic Stock Option Agreement.

         B.      BOARD shall mean the Corporation's Board of Directors.

         C.      CHANGE IN CONTROL shall mean a change in ownership or control
of the Corporation effected through either of the following transactions:

                       (i)        the acquisition, directly or indirectly, by
         any person or related group of persons (other than the Corporation or
         a person that directly or indirectly controls, is controlled by, or is
         under common control with, the Corporation) of beneficial ownership
         (within the meaning of Rule 13d-3 of the 1934 Act) of securities
         possessing more than fifty percent (50%) of the total combined voting
         power of the Corporation's outstanding securities pursuant to a tender
         or exchange offer made directly to the Corporation's stockholders, or

                      (ii)        a change in the composition of the Board over
         a period of thirty-six (36) consecutive months or less such that a
         majority of the Board members ceases, by reason of one or more
         contested elections for Board membership, to be comprised of
         individuals who either (A) have been Board members continuously since
         the beginning of such period or (B) have been elected or nominated for
         election as Board members during such period by at least a majority of
         the Board members described in clause (A) who were still in office at
         the time the Board approved such election or nomination.

         D.      COMMON STOCK shall mean shares of the Corporation's common
stock.

         E.      CODE shall mean the Internal Revenue Code of 1986, as amended.

         F.      CORPORATE TRANSACTION shall mean either of the following
stockholder-approved transactions to which the Corporation is a party:

                       (i)        a merger or consolidation in which securities
         possessing more than fifty percent (50%) of the total combined voting
         power of the Corporation's outstanding securities are transferred to a
         person or persons different from the persons holding those securities
         immediately prior to such transaction, or

                      (ii)        the sale, transfer or other disposition of
         all or substantially all of the Corporation's assets in complete
         liquidation or dissolution of the Corporation.





                                      A-2.
<PAGE>   10
         G.      CORPORATION shall mean Com21, Inc., a Delaware corporation.

         H.      EXERCISE DATE shall mean the date on which the option shall
have been exercised in accordance with Paragraph 10 of the Agreement.

         I.      EXERCISE PRICE shall mean the exercise price per share as
specified in the Grant Notice.

         J.      EXPIRATION DATE shall mean the date on which the option
expires as specified in the Grant Notice.

         K.      FAIR MARKET VALUE per share of Common Stock on any relevant
date shall be determined in accordance with the following provisions:

                       (i)        If the Common Stock is at the time traded on
         the Nasdaq National Market, then the Fair Market Value shall be the
         closing selling price per share of Common Stock on the date in
         question, as the price is reported by the National Association of
         Securities Dealers on the Nasdaq National Market or any successor
         system.  If there is no closing selling price for the Common Stock on
         the date in question, then the Fair Market Value shall be the closing
         selling price on the last preceding date for which such quotation
         exists.

                      (ii)        If the Common Stock is at the time listed on
         any Stock Exchange, then the Fair Market Value shall be the closing
         selling price per share of Common Stock on the date in question on the
         Stock Exchange which serves as the primary market for the Common
         Stock, as such price is officially quoted in the composite tape of
         transactions on such exchange.  If there is no closing selling price
         for the Common Stock on the date in question, then the Fair Market
         Value shall be the closing selling price on the last preceding date
         for which such quotation exists.

         L.      GRANT DATE shall mean the date of grant of the option as
specified in the Grant Notice.

         M.      GRANT NOTICE shall mean the Notice of Grant of Automatic Stock
Option accompanying the Agreement, pursuant to which Optionee has been informed
of the basic terms of the option evidenced hereby.

         N.      HOSTILE TAKEOVER shall mean the acquisition, directly or
indirectly, by any person or related group of persons (other than the
Corporation or a person that directly or indirectly controls, is controlled by,
or is under common control with, the Corporation) of beneficial ownership
(within the meaning of Rule 13d-3 of the 1934 Act) of securities possessing
more than fifty percent (50%) of the total combined voting power of the
Corporation's outstanding securities  pursuant to a tender or exchange offer
made directly to the Corporation's stockholders which the Board does not 
recommend such stockholders to accept.





                                      A-3.
<PAGE>   11
         O.      1934 ACT shall mean the Securities Exchange Act of 1934, as
amended.

         P.      NON-STATUTORY OPTION shall mean an option not intended to
satisfy the requirements of Code Section 422.

         Q.      NOTICE OF EXERCISE shall mean the notice of exercise in the
form of Exhibit I.

         R.      OPTION SHARES shall mean the number of shares of Common Stock
subject to the option.

         S.      OPTIONEE shall mean the person to whom the option is granted
as specified in the Grant Notice.

         T.      PERMANENT DISABILITY shall mean the inability of Optionee to
perform his or her usual duties as a member of the Board by reason of any
medically determinable physical or mental impairment which is expected to
result in death or has lasted or can be expected to last for a continuous
period of twelve (12) months or more.

         U.      PLAN shall mean the Corporation's 1998 Stock Incentive Plan.

         V.      PURCHASE AGREEMENT shall mean the stock purchase agreement (in
form and substance satisfactory to the Corporation) which grants the
Corporation the right to repurchase, at the Exercise Price, any and all
unvested Option Shares held by Optionee at the time of Optionee's cessation of
Board service and which precludes the sale, transfer or other disposition of
any purchased Option Shares while those shares are unvested and subject to such
repurchase right.

         W.      STOCK EXCHANGE shall mean the American Stock Exchange or the
New York Stock Exchange.

         X.      TAKE-OVER PRICE shall mean the greater of (i) the Fair Market
Value per share of Common Stock on the date the option is surrendered to the
Corporation in connection with a Hostile Take-Over or (ii) the highest reported
price per share of Common Stock paid by the tender offeror in effecting the
Hostile Take-Over.

         Y.      VESTING SCHEDULE shall mean the vesting schedule specified in
the Grant Notice, pursuant to which the Option Shares will vest in one or more
installments over the Optionee's period of Board service, subject to
acceleration in accordance with the provisions of the Agreement.





                                      A-4.

<PAGE>   1
                                                                   EXHIBIT 99.11



                                  COM21, INC.
                       1998 EMPLOYEE STOCK PURCHASE PLAN


       I.        PURPOSE OF THE PLAN

                 This Employee Stock Purchase Plan is intended to promote the
interests of Com21, Inc. by providing eligible employees with the opportunity
to acquire a proprietary interest in the Corporation through participation in a
payroll-deduction based employee stock purchase plan designed to qualify under
Section 423 of the Code.

                 Capitalized terms herein shall have the meanings assigned to
such terms in the attached Appendix.

      II.        ADMINISTRATION OF THE PLAN

                 The Plan Administrator shall have full authority to interpret
and construe any provision of the Plan and to adopt such rules and regulations
for administering the Plan as it may deem necessary in order to comply with the
requirements of Code Section 423.  Decisions of the Plan Administrator shall be
final and binding on all parties having an interest in the Plan.

     III.        STOCK SUBJECT TO PLAN

                 A.       The stock purchasable under the Plan shall be shares
of authorized but unissued or reacquired Common Stock, including shares of
Common Stock purchased on the open market.  The maximum number of shares of
Common Stock which may be issued over the term of the Plan shall not exceed Two
Hundred Fifty Thousand (250,000) shares.

                 B.       Should any change be made to the Common Stock by
reason of any stock split, stock dividend, recapitalization, combination of
shares, exchange of shares or other change affecting the outstanding Common
Stock as a class without the Corporation's receipt of consideration,
appropriate adjustments shall be made to (i) the maximum number and class of
securities issuable under the Plan, (ii) the maximum number and class of
securities purchasable per Participant on any one Purchase Date and (iii) the
number and class of securities and the price per share in effect under each
outstanding purchase right in order to prevent the dilution or enlargement of
benefits thereunder.

      IV.        OFFERING PERIODS

                 A.       Shares of Common Stock shall be offered for purchase
under the Plan through a series of successive offering periods until such time
as (i) the maximum number of shares of Common Stock available for issuance
under the Plan shall have been purchased or (ii) the Plan shall have been
sooner terminated.






<PAGE>   2
                 B.       Each offering period shall be of such duration (not
to exceed twenty-four (24) months) as determined by the Plan Administrator
prior to the start date of such offering period.  However, the initial offering
period shall commence at the Effective Time and terminate on the last business
day in April 2000.  The next offering period shall commence on the first
business day in May 2000, and subsequent offering periods shall commence as
designated by the Plan Administrator.

                 C.       Each offering period shall be comprised of a series
of one or more successive Purchase Intervals.  Purchase Intervals shall run
from the first business day in May each year to the last business day in
October of the same year and from the first business day in November each year
to the last business day in April of the following year.  However, the first
Purchase Interval in effect under the initial offering period shall commence at
the Effective Time and terminate on the last business day in October 1998.

                 D.       Should the Fair Market Value per share of Common
Stock on any Purchase Date within an offering period be less than the Fair
Market Value per share of Common Stock on the start date of that offering
period, then that offering period shall automatically terminate immediately
after the purchase of shares of Common Stock on such Purchase Date, and a new
offering period shall commence on the next business day following such Purchase
Date.  The new offering period shall have a duration of twenty (24) months,
unless a shorter duration is established by the Plan Administrator within five
(5) business days following the start date of that offering period.

       V.        ELIGIBILITY

                 A.       Each individual who is an Eligible Employee on the
start date of any offering period under the Plan may enter that offering period
on such start date or on any subsequent Semi-Annual Entry Date within that
offering period, provided he or she remains an Eligible Employee.

                 B.       Each individual who first becomes an Eligible
Employee after the start date of an offering period may enter that offering
period on any subsequent Semi-Annual Entry Date within that offering period on
which he or she is an Eligible Employee.

                 C.       The date an individual enters an offering period
shall be designated his or her Entry Date for purposes of that offering period.

                 D.       To participate in the Plan for a particular offering
period, the Eligible Employee must complete the enrollment forms prescribed by
the Plan Administrator (including a stock purchase agreement and a payroll
deduction authorization) and file such forms with the Plan Administrator (or
its designate) on or before his or her scheduled Entry Date.




                                       2.
<PAGE>   3
      VI.        PAYROLL DEDUCTIONS

                 A.       The payroll deduction authorized by the Participant
for purposes of acquiring shares of Common Stock during an offering period may
be any multiple of one percent (1%) of the Base Salary paid to the Participant
during each Purchase Interval within that offering period, up to a maximum of
ten percent (10%).  The deduction rate so authorized shall continue in effect
throughout the offering period, except to the extent such rate is changed in
accordance with the following guidelines:

                               (i)         The Participant may, at any time
         during the offering period, reduce his or her rate of payroll
         deduction to become effective as soon as possible after filing the
         appropriate form with the Plan Administrator.  The Participant may
         not, however, effect more than one (1) such reduction per Purchase
         Interval.

                              (ii)         The Participant may, prior to the
         commencement of any new Purchase Interval within the offering period,
         increase the rate of his or her payroll deduction by filing the
         appropriate form with the Plan Administrator.  The new rate (which may
         not exceed the ten percent (10%) maximum) shall become effective on
         the start date of the first Purchase Interval following the filing of
         such form.

                 B.       Payroll deductions shall begin on the first pay day
administratively feasible following the Participant's Entry Date into the
offering period and shall (unless sooner terminated by the Participant)
continue through the pay day ending with or immediately prior to the last day
of that offering period.  The amounts so collected shall be credited to the
Participant's book account under the Plan, but no interest shall be paid on the
balance from time to time outstanding in such account.  The amounts collected
from the Participant shall not be required to be held in any segregated account
or trust fund and may be commingled with the general assets of the Corporation
and used for general corporate purposes.

                 C.       Payroll deductions shall automatically cease upon the
termination of the Participant's purchase right in accordance with the
provisions of the Plan.

                 D.       The Participant's acquisition of Common Stock under
the Plan on any Purchase Date shall neither limit nor require the Participant's
acquisition of Common Stock on any subsequent Purchase Date, whether within the
same or a different offering period.





                                       3.
<PAGE>   4

     VII.        PURCHASE RIGHTS

                 A.       GRANT OF PURCHASE RIGHT.  A Participant shall be
granted a separate purchase right for each offering period in which he or she
participates.  The purchase right shall be granted on the Participant's Entry
Date into the offering period and shall provide the Participant with the right
to purchase shares of Common Stock, in a series of successive installments over
the remainder of such offering period, upon the terms set forth below.  The
Participant shall execute a stock purchase agreement embodying such terms and
such other provisions (not inconsistent with the Plan) as the Plan
Administrator may deem advisable.

                 Under no circumstances shall purchase rights be granted under
the Plan to any Eligible Employee if such individual would, immediately after
the grant, own (within the meaning of Code Section 424(d)) or hold outstanding
options or other rights to purchase, stock possessing five percent (5%) or more
of the total combined voting power or value of all classes of stock of the
Corporation or any Corporate Affiliate.

                 B.       EXERCISE OF THE PURCHASE RIGHT.  Each purchase right
shall be automatically exercised in installments on each successive Purchase
Date within the offering period, and shares of Common Stock shall accordingly
be purchased on behalf of each Participant (other than Participants whose
payroll deductions have previously been refunded pursuant to the Termination of
Purchase Right provisions below) on each such Purchase Date.  The purchase
shall be effected by applying the Participant's payroll deductions for the
Purchase Interval ending on such Purchase Date to the purchase of whole shares
of Common Stock at the purchase price in effect for the Participant for that
Purchase Date.

                 C.       PURCHASE PRICE.  The purchase price per share at
which Common Stock will be purchased on the Participant's behalf on each
Purchase Date within the offering period shall be equal to eighty-five percent
(85%) of the lower of (i) the Fair Market Value per share of Common Stock on
the Participant's Entry Date into that offering period or (ii) the Fair Market
Value per share of Common Stock on that Purchase Date.

                 D.       NUMBER OF PURCHASABLE SHARES.  The number of shares
of Common Stock purchasable by a Participant on each Purchase Date during the
offering period shall be the number of whole shares obtained by dividing the
amount collected from the Participant through payroll deductions during the
Purchase Interval ending with that Purchase Date by the purchase price in
effect for the Participant for that Purchase Date.  However, the maximum number
of shares of Common Stock purchasable per Participant on any one Purchase Date
shall not exceed One Thousand Five Hundred (1,500) shares, subject to periodic
adjustments in the event of certain changes in the Corporation's
capitalization. In addition, the maximum aggregate number of shares of Common
Stock purchasable by all Participants on any one Purchase Date shall not exceed
Sixty Thousand (60,000) shares, subject to periodic adjustments in the event of
certain changes in the Corporation's capitalization.





                                       4.
<PAGE>   5
                 E.       EXCESS PAYROLL DEDUCTIONS.  Any payroll deductions
not applied to the  purchase of shares of Common Stock on any Purchase Date
because they are not sufficient to purchase a whole share of Common Stock shall
be held for the purchase of Common Stock on the next Purchase Date.  However,
any payroll deductions not applied to the purchase of Common Stock by reason of
the limitation on the maximum number of shares purchasable on the Purchase Date
shall be promptly refunded.

                 F.       TERMINATION OF PURCHASE RIGHT.  The following
provisions shall govern the termination of outstanding purchase rights:

                               (i)         A Participant may, at any time prior
         to the next scheduled Purchase Date in the offering period, terminate
         his or her outstanding purchase right by filing the appropriate form
         with the Plan Administrator (or its designate), and no further payroll
         deductions shall be collected from the Participant with respect to the
         terminated purchase right.  Any payroll deductions collected during
         the Purchase Interval in which such termination occurs shall, at the
         Participant's election, be immediately refunded or held for the
         purchase of shares on the next Purchase Date.  If no such election is
         made at the time such purchase right is terminated, then the payroll
         deductions collected with respect to the terminated right shall be
         refunded as soon as possible.

                              (ii)         The termination of such purchase
         right shall be irrevocable, and the Participant may not subsequently
         rejoin the offering period for which the terminated purchase right was
         granted.  In order to resume participation in any subsequent offering
         period, such individual must re-enroll in the Plan (by making a timely
         filing of the prescribed enrollment forms) on or before his or her
         scheduled Entry Date into that offering period.

                              (iii)        Should the Participant cease to
         remain an Eligible Employee for any reason (including death, disability
         or change in status) while his or her purchase right remains
         outstanding, then that purchase right shall immediately terminate, and
         all of the Participant's payroll deductions for the Purchase Interval
         in which the purchase right so terminates shall be immediately
         refunded.  However, should the Participant cease to remain in active
         service by reason of an approved unpaid leave of absence, then the
         Participant shall have the right, exercisable up until the last
         business day of the Purchase Interval in which such leave commences, to
         (a) withdraw all the payroll deductions collected to date on his or her
         behalf for that Purchase Interval or (b) have such funds held for the
         purchase of shares on his or her behalf on the next scheduled Purchase
         Date.  In no event, however, shall any further payroll deductions be
         collected on the Participant's behalf during such leave. Upon the
         Participant's return to active service within (i) ninety (90) days
         following the commencement of such leave or, if longer, the period
         during which such Participant's right to reemployment with the
         Corporation is guaranteed by either statute or contract, his or her
         payroll 





                                       5.
<PAGE>   6


         deductions under the Plan shall automatically resume at the rate in
         effect at the time the leave began, unless the Participant withdraws
         from the Plan prior to his or her return.  If the Participant's leave
         of absence, whether paid or unpaid, (i) exceeds ninety (90) days and
         (ii) is not guaranteed by either  statute or contract, then the
         Participant's status as an Eligible Employee will be deemed to have
         terminated on the ninety- first (91st) day of such leave, and such
         Participant's purchase right for the offering period in which such
         leave began shall thereupon terminate.  An individual who returns to
         active employment following such a leave will be treated as a new
         employee for purposes of participating in the Plan and will accordingly
         have a new Entry Date.  Such an individual must re-enroll in the Plan
         (by making a timely filing of the prescribed enrollment forms) on or
         before his or her scheduled Entry Date into the offering period.

                 G.       CORPORATE TRANSACTION.  Each outstanding purchase
right shall automatically be exercised, immediately prior to the effective date
of any Corporate Transaction, by applying the payroll deductions of each
Participant for the Purchase Interval in which such Corporate Transaction
occurs to the purchase of whole shares of Common Stock at a purchase price per
share equal to eighty-five percent (85%) of the lower of (i) the Fair Market
Value per share of Common Stock on the Participant's Entry Date into the
offering period in which such Corporate Transaction occurs or (ii) the Fair
Market Value per share of Common Stock immediately prior to the effective date
of such Corporate Transaction.  However, the applicable limitation on the
number of shares of Common Stock purchasable per Participant and in the
aggregate shall continue to apply to any such purchase.

                 The Corporation shall use its best efforts to provide at least
ten (10)-days prior written notice of the occurrence of any Corporate
Transaction, and Participants shall, following the receipt of such notice, have
the right to terminate their outstanding purchase rights prior to the effective
date of the Corporate Transaction.

                 H.       PRORATION OF PURCHASE RIGHTS.  Should the total
number of shares of Common Stock to be purchased pursuant to outstanding
purchase rights on any particular date exceed the number of shares then
available for issuance under the Plan, the Plan Administrator shall make a
pro-rata allocation of the available shares on a uniform and nondiscriminatory
basis, and the payroll deductions of each Participant, to the extent in excess
of the aggregate purchase price payable for the Common Stock pro-rated to such
individual, shall be refunded.

                 I.       ASSIGNABILITY.  The purchase right shall be
exercisable only by the Participant and shall not be assignable or transferable
by the Participant.

                 J.       STOCKHOLDER RIGHTS.  A Participant shall have no
stockholder rights with respect to the shares subject to his or her outstanding
purchase right until the shares are purchased on the Participant's behalf in
accordance with the provisions of the Plan and the Participant has become a
holder of record of the purchased shares.





                                       6.
<PAGE>   7
    VIII.        ACCRUAL LIMITATIONS

                 A.       No Participant shall be entitled to accrue rights to
acquire Common Stock pursuant to any purchase right outstanding under this Plan
if and to the extent such accrual, when aggregated with (i) rights to purchase
Common Stock accrued under any other purchase right granted under this Plan and
(ii) similar rights accrued under other employee stock purchase plans (within
the meaning of Code Section 423) of the Corporation or any Corporate Affiliate,
would otherwise permit such Participant to purchase more than Twenty-Five
Thousand Dollars ($25,000) worth of stock of the Corporation or any Corporate
Affiliate (determined on the basis of the Fair Market Value per share on the
date or dates such rights are granted) for each calendar year such rights are
at any time outstanding.

                 B.       For purposes of applying such accrual limitations to
the purchase rights granted under the Plan, the following provisions shall be
in effect:

                               (i)         The right to acquire Common Stock
         under each outstanding purchase right shall accrue in a series of
         installments on each successive Purchase Date during the offering
         period on which such right remains outstanding.

                              (ii)         No right to acquire Common Stock
         under any outstanding purchase right shall accrue to the extent the
         Participant has already accrued in the same calendar year the right to
         acquire Common Stock under one (1) or more other purchase rights at a
         rate equal to Twenty-Five Thousand Dollars ($25,000) worth of Common
         Stock (determined on the basis of the Fair Market Value per share on
         the date or dates of grant) for each calendar year such rights were at
         any time outstanding.

                 C.       If by reason of such accrual limitations, any
purchase right of a Participant does not accrue for a particular Purchase
Interval, then the payroll deductions which the Participant made during that
Purchase Interval with respect to such purchase right shall be promptly
refunded.

                 D.       In the event there is any conflict between the
provisions of this Article and one or more provisions of the Plan or any
instrument issued thereunder, the provisions of this Article shall be
controlling.

      IX.        EFFECTIVE DATE AND TERM OF THE PLAN

                 A.       The Plan was adopted by the Board on March 10, 1998
and shall become effective at the Effective Time, provided no purchase rights
granted under the Plan shall be exercised, and no shares of Common Stock shall
be issued hereunder, until (i) the Plan shall have been approved by the
stockholders of the Corporation and (ii) the Corporation shall have complied
with all applicable requirements of the 1933 Act (including the registration of
the shares





                                       7.
<PAGE>   8
of Common Stock issuable under the Plan on a Form S-8 registration statement
filed with the Securities and Exchange Commission), all applicable listing
requirements of any stock exchange (or the Nasdaq National Market, if
applicable) on which the Common Stock is listed for trading and all other
applicable requirements established by law or regulation.  In the event such
stockholder approval is not obtained, or such compliance is not effected,
within twelve (12) months after the date on which the Plan is adopted by the
Board, the Plan shall terminate and have no further force or effect, and all
sums collected from Participants during the initial offering period hereunder
shall be refunded.

                 B.       Unless sooner terminated by the Board, the Plan shall
terminate upon the earliest of (i) the last business day in April 2008, (ii)
the date on which all shares available for issuance under the Plan shall have
been sold pursuant to purchase rights exercised under the Plan or (iii) the
date on which all purchase rights are exercised in connection with a Corporate
Transaction.  No further purchase rights shall be granted or exercised, and no
further payroll deductions shall be collected, under the Plan following such
termination.

       X.        AMENDMENT OF THE PLAN

                 A.       The Board may alter, amend, suspend or terminate the
Plan at any time to become effective immediately following the close of any
Purchase Interval.  However, the Plan may be amended or terminated immediately
upon Board action, if and to the extent necessary to assure that the
Corporation will not recognize, for financial reporting purposes, any
compensation expense in connection with the shares of Common Stock offered for
purchase under the Plan, should the financial accounting rules applicable to
the Plan at the Effective Time be subsequently revised so as to require the
recognition of compensation expense in the absence of such amendment or
termination.

                 B.       In no event may the Board effect any of the following
amendments or revisions to the Plan without the approval of the Corporation's
stockholders: (i) increase the number of shares of Common Stock issuable under
the Plan or the maximum number of shares purchasable per Participant on any one
Purchase Date, except for permissible adjustments in the event of certain
changes in the Corporation's capitalization, (ii) alter the purchase price
formula so as to reduce the purchase price payable for the shares of Common
Stock purchasable under the Plan or (iii) modify eligibility requirements for
participation in the Plan.

         XI.     GENERAL PROVISIONS

                 A.       All costs and expenses incurred in the administration
of the Plan shall be paid by the Corporation; however, each Plan Participant
shall bear all costs and expenses incurred by such individual in the sale or
other disposition of any shares purchased under the Plan.

                 B.       Nothing in the Plan shall confer upon the Participant
any right to continue in the employ of the Corporation or any Corporate
Affiliate for any period of specific duration or interfere with or otherwise
restrict in any way the rights of the Corporation (or any Corporate





                                       8.
<PAGE>   9
Affiliate employing such person) or of the Participant, which rights are hereby
expressly reserved by each, to terminate such person's employment  at any time
for any reason, with or without cause.

                 C.       The provisions of the Plan shall be governed by the
laws of the State of California without resort to that State's conflict-of-laws
rules.














                                       9.
<PAGE>   10

                                   SCHEDULE A

                          CORPORATIONS PARTICIPATING IN
                          EMPLOYEE STOCK PURCHASE PLAN
                            AS OF THE EFFECTIVE TIME

                                   COM21, Inc.






<PAGE>   11
                                    APPENDIX


                 The following definitions shall be in effect under the Plan:

                 A.       BASE SALARY shall mean the (i) regular base salary
paid to a Participant by one or more Participating Companies during such
individual's period of participation in one or more offering periods under the
Plan plus (ii) any pre-tax contributions made by the Participant to any Code
Section 401(k) salary deferral plan or any Code Section 125 cafeteria benefit
program now or hereafter established by the Corporation or any Corporate
Affiliate.  The following items of compensation shall NOT be included in Base
Salary:  (i) all overtime payments, bonuses, commissions (other than those
functioning as base salary equivalents), profit-sharing distributions and other
incentive-type payments and (ii) any and all contributions (other than Code
Section 401(k) or Code Section 125 contributions) made on the Participant's
behalf by the Corporation or any Corporate Affiliate under any employee benefit
or welfare plan now or hereafter established.

                 B.       BOARD shall mean the Corporation's Board of
Directors.

                 C.       CODE shall mean the Internal Revenue Code of 1986, as
amended.

                 D.       COMMON STOCK shall mean the Corporation's common
stock.

                 E.       CORPORATE AFFILIATE shall mean any parent or
subsidiary corporation of the Corporation (as determined in accordance with
Code Section 424), whether now existing or subsequently established.

                 F.       CORPORATE TRANSACTION shall mean either of the
following stockholder-approved transactions to which the Corporation is a
party:

                        (i)       a merger or consolidation in which securities
         possessing more than fifty percent (50%) of the total combined voting
         power of the Corporation's outstanding securities are transferred to a
         person or persons different from the persons holding those securities
         immediately prior to such transaction, or

                       (ii)       the sale, transfer or other disposition of
         all or substantially all of the assets of the Corporation in complete
         liquidation or dissolution of the Corporation.

                 G.       CORPORATION shall mean Com21, Inc., a Delaware
corporation, and any corporate successor to all or substantially all of the
assets or voting stock of Com21, Inc. which shall by appropriate action adopt
the Plan.





                                      A-1.
<PAGE>   12
                 H.       EFFECTIVE TIME shall mean the time at which the
Underwriting Agreement is executed and finally priced.  Any Corporate Affiliate
which becomes a Participating Corporation after such Effective Time shall
designate a subsequent Effective Time with respect to its
employee-Participants.

                 I.       ELIGIBLE EMPLOYEE shall mean any person who is
employed by a Participating Corporation on a basis under which he or she is
regularly expected to render more than twenty (20) hours of service per week
for more than five (5) months per calendar year for earnings considered wages
under Code Section 3401(a).

                 J.       ENTRY DATE shall mean the date an Eligible Employee
first commences participation in the offering period in effect under the Plan.
The earliest Entry Date under the Plan shall be the Effective Time.

                 K.       FAIR MARKET VALUE per share of Common Stock on any
relevant date shall be determined in accordance with the following provisions:

                        (i)       If the Common Stock is at the time traded on
         the Nasdaq National Market, then the Fair Market Value shall be the
         closing selling price per share of Common Stock on the date in
         question, as such price is reported by the National Association of
         Securities Dealers on the Nasdaq National Market or any successor
         system.  If there is no closing selling price for the Common Stock on
         the date in question, then the Fair Market Value shall be the closing
         selling price on the last preceding date for which such quotation
         exists.

                       (ii)       If the Common Stock is at the time listed on
         any Stock  Exchange, then the Fair Market Value shall be the closing
         selling price per share of Common Stock on the date in question on the
         Stock Exchange determined by the Plan Administrator to be the primary
         market for the Common Stock, as such price is officially quoted in the
         composite tape of transactions on such exchange.  If there is no
         closing selling price for the Common Stock on the date in question,
         then the Fair Market Value shall be the closing selling price  on the
         last preceding date for which such quotation exists.

                      (iii)       For purposes of the initial offering period
         which begins at the Effective Time, the Fair Market Value shall be
         deemed to be equal to the price per share at which the Common Stock is
         sold in the initial public offering pursuant to the Underwriting
         Agreement.

                 L.       1933 ACT shall mean the Securities Act of 1933, as
amended.

                 M.       PARTICIPANT shall mean any Eligible Employee of a
Participating Corporation who is actively participating in the Plan.





                                      A-2.
<PAGE>   13
                 N.       PARTICIPATING CORPORATION shall mean the Corporation
and such Corporate Affiliate or Affiliates as may be authorized from time to
time by the Board to extend the benefits of the Plan to their Eligible
Employees.  The Participating Corporations in the Plan are listed in attached
Schedule A.

                 O.       PLAN shall mean the Corporation's 1998 Employee Stock
Purchase Plan, as set forth in this document.

                 P.       PLAN ADMINISTRATOR shall mean the committee of two
(2) or more Board members appointed by the Board to administer the Plan.

                 Q.       PURCHASE DATE shall mean the last business day of
each Purchase Interval.  The initial Purchase Date shall be October 30, 1998.

                 R.       PURCHASE INTERVAL shall mean each successive six
(6)-month period within the offering period at the end of which there shall be
purchased shares of Common Stock on behalf of each Participant.

                 S.       SEMI-ANNUAL ENTRY DATE shall mean the first business
day in May and November each year on which an Eligible Employee may first enter
an offering period.

                 T.       STOCK EXCHANGE shall mean either the American Stock
Exchange or the New York Stock Exchange.

                 U.       UNDERWRITING AGREEMENT shall mean the agreement
between the Corporation and the underwriter or underwriters managing the
initial public offering of the Common Stock.





                                      A-3.

<PAGE>   1
                                                                   EXHIBIT 99.12


                                   COM21, INC.
                   1998 EMPLOYEE STOCK PURCHASE PLAN ("ESPP")
                             ENROLLMENT/CHANGE FORM

<TABLE>
<CAPTION>
           Action                                Complete Sections:
           ------                                ------------------
<S>        <C>                                   <C>    
           [ ]  New Enrollment                   2, 3, 7, 8 and sign attached
SECTION 1:                                                  Stock Purchase 
ACTIONS                                                     Agreement
           [ ]  Payroll Deduction Change         2, 4, 8
           [ ]  Terminate Payroll Deductions     2, 5, 8
           [ ]  Leave of Absence                 2, 6, 8
           [ ]  Beneficiary Change               2, 7, 8

</TABLE>
================================================================================
SECTION 2:       Name
PERSONNEL            -----------------------------------------------------------
DATA                 Last        First              MI                     Dept.

                 Home or Mailing Address
                                        ----------------------------------------
                                                      Street

                 ---------------------------------------------------------------
                 City                        State                      Zip Code

                 Social Security #:              -         -
                                  ----------------------------------------------

================================================================================
SECTION 3:       Effective with the Purchase
NEW              Interval Beginning:
ENROLLMENT                         [ ]     May ___, 199___
                                   [ ]     November ___, 199___
                                   [ ]     Initial Offering Period May, 1998

                 Amount to be deducted 
                  (circle one):          1%  2%  3%  4%  5%  6%  7%  8%  9%  10%

================================================================================
SECTION 4:       Effective on or as soon as practicable after the Pay Period
CHANGE           Beginning: 
PAYROLL                     ----------------------------------------------------
DEDUCTIONS
                 Amount to be deducted 
                  (circle one):          1%  2%  3%  4%  5%  6%  7%  8%  9%  10%

      NOTE:      You may reduce your rate of payroll deductions once per 6-month
                 purchase interval to become effective as soon as possible
                 following the filing of the change form. You may increase your
                 rate of payroll deductions to become effective as of the start
                 date of the next 6-month purchase interval (May 1 or 
                 November 1).

================================================================================
SECTION 5:       Effective with the Pay Period Beginning:
TERMINATE                                                 ----------------------
PAYROLL                                                     Month, Day and Year
DEDUCTIONS 
                 Your election to terminate your payroll deductions for the
                 balance of the offering period must be received by the Stock
                 Administration Dept. at least one (1) business day prior to the
                 applicable purchase date, and you may not rejoin that offering
                 period at a later date. You will not be able to resume
                 participation in the ESPP until a new offering period begins.

                 In connection with my voluntary termination of payroll
                 deductions, I elect the following action regarding my ESPP
                 payroll deductions to date in the current purchase interval:

                 [ ] Purchase shares of Com21, Inc. on next scheduled 
                     purchase date

                                       OR

                 [ ] Refund ESPP payroll deductions collected

      NOTE:      If your employment terminates for any reason or your
                 eligibility status changes (less than 20 hrs/wk or less than 5
                 months/yr), you will immediately cease to participate in the
                 ESPP, and your ESPP payroll deductions collected in that
                 purchase interval will automatically be refunded to you.

================================================================================
SECTION 6:       In connection with my unpaid leave of absence, I elect the
LEAVE OF         following action with respect to my ESPP payroll deductions to
ABSENCE          date:

                 in the current offering period:

                 [ ] Purchase shares of Com21, Inc. on next scheduled 
                     purchase date

                                       OR

                 [ ] Refund ESPP payroll deductions collected

      NOTE:      If you take an unpaid leave of absence, your payroll deductions
                 will immediately cease.

================================================================================
SECTION 7:       Beneficiary                         Relationship of Beneficiary
BENEFICIARY      -----------                         ---------------------------

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

================================================================================
SECTION 8:
AUTHORIZATION

- -----------------------------------    -----------------------------------------
              Date                                Signature of Employee

<PAGE>   1

                                                                   EXHIBIT 99.13

                                  COM21, INC.
                            STOCK PURCHASE AGREEMENT

         I hereby elect to participate in the 1998 Employee Stock Purchase Plan
(the "ESPP") for the offering period specified below, and I hereby subscribe to
purchase shares of Common Stock of COM21, Inc. (the "Corporation") in
accordance with the provisions of this Agreement and the ESPP.  I hereby
authorize payroll deductions from each of my paychecks following my entry into
the offering period in the 1% multiple of my base salary (not to exceed a
maximum of 10%) specified in my attached Enrollment Form.

         The offering period is divided into a series of consecutive purchase
intervals.  With the exception of the initial purchase interval which begins at
the time of the initial public offering of the Common Stock, those purchase
intervals will be of six months duration and begin on the first business day of
May and November each year during the offering period.  My participation will
automatically remain in effect from one purchase interval to the next during
the term of the ESPP in accordance with my payroll deduction authorization,
unless I withdraw from the ESPP or change the rate of my payroll deduction or
unless my employment status changes.  I may reduce the rate of my payroll
deductions once per purchase interval and I may increase my rate of payroll
deductions to become effective at the beginning of any subsequent purchase
interval.

         My payroll deductions will be accumulated for the purchase of shares
of the Corporation's Common Stock on the last business day of each purchase
interval within the offering period.  The purchase price per share will be
equal to 85% of the lower of (i) the fair market value per share of Common
Stock on my entry date into the offering period or (ii) the fair market value
per share on the purchase date.  However, the clause (i) amount will in no
event be less than the fair market value per share of Common Stock on the start
date of the offering period.  I will also be subject to ESPP restrictions (i)
limiting the maximum number of shares which I may purchase during any purchase
interval and (ii) prohibiting me from purchasing more than $25,000 worth of
Common Stock for each calendar year my purchase right remains outstanding.

         I may withdraw from the ESPP at any time prior to the last business
day of a purchase interval and elect either to have the Corporation refund all
my payroll deductions for that interval or to have such payroll deductions
applied to the purchase of Common Stock at the end of such interval.  However,
I may not rejoin that particular offering period at any later date.  Upon the
termination of my employment for any reason including death or disability or my
loss of eligible employee status, my participation in the ESPP will immediately
cease and all my payroll deductions for the purchase interval in which my
employment terminates or my loss of eligibility occurs will automatically be
refunded.

         If I take an unpaid leave of absence, my payroll deductions will
immediately cease, and any payroll deductions for the purchase interval in
which my leave begins will, at my election, either be refunded or applied to
the purchase of shares of Common Stock at the end of that purchase interval.
If I take a paid or unpaid leave of absence and  my re-employment is guaranteed
by either law or contract, or if I return to active service within ninety (90)
days, upon my return my payroll deductions will automatically continue or
resume at the rate in effect when my leave began; otherwise upon my return to
active service I may re-enroll in the ESPP as a new employee.  The Corporation
will issue a stock certificate for the shares purchased on my behalf after the
end of each purchase interval.  The certificate will be issued in street name
and will be deposited directly in my Corporation-designated brokerage account.
I will notify the Corporation of any disposition of shares purchased under the
ESPP and I will satisfy all applicable income and employment tax withholding
requirements at the time of such disposition.

         The Corporation has the right, exercisable in its sole discretion, to
amend or terminate the ESPP at any time.  Should the Corporation elect to
terminate the ESPP, I will have no further rights to purchase shares of Common
Stock pursuant to this Agreement.

         I have received a copy of the official Plan Prospectus summarizing the
major features of the ESPP.  I have read this Agreement and the Prospectus and
hereby agree to be bound by the terms of both this Agreement and the ESPP.  The
effectiveness of this Agreement is dependent upon my eligibility to participate
in the ESPP.

Date: ___________________, 199__

                                     ___________________________________________
                                     Signature of Employee

                                     Printed Name:______________________________

Duration of Offering Period:   From: __________________, 1998 to April 30, 2000

Entry Date into Offering Period:  _____________________, 1998




<PAGE>   1
                                                                   EXHIBIT 99.14


                                  COM21, INC.
                             1995 STOCK OPTION PLAN
                (RESTATED AND AMENDED THROUGH JANUARY 15, 1998)


                                  ARTICLE ONE

                               GENERAL PROVISIONS


        I.       PURPOSE OF THE PLAN

                 This 1995 Stock Option Plan is intended to promote the
interests of Com21, Inc., a Delaware corporation, by providing eligible persons
with the opportunity to acquire a proprietary interest, or otherwise increase
their proprietary interest, in the Corporation as an incentive for them to
remain in the service of the Corporation.

                 Capitalized terms herein shall have the meanings assigned to
such terms in the attached Appendix.

       II.       ADMINISTRATION OF THE PLAN

                 A.       The Plan shall be administered by the Board.
However, any or all administrative functions otherwise exercisable by the Board
may be delegated to the Committee.  Members of the Committee shall serve for
such period of time as the Board may determine and shall be subject to removal
by the Board at any time.  The Board may also at any time terminate the
functions of the Committee and reassume all powers and authority previously
delegated to the Committee.

                 B.       The Plan Administrator shall have full power and
authority (subject to the provisions of the Plan) to establish such rules and
regulations as it may deem appropriate for proper administration of the Plan
and to make such determinations under, and issue such interpretations of, the
Plan and any outstanding options as it may deem necessary or advisable.
Decisions of the Plan Administrator shall be final and binding on all parties
who have an interest in the Plan or any option or shares issued thereunder.

      III.       ELIGIBILITY

                 A.       The persons eligible to receive option grants under
the Plan are as follows:

                               (i)         Employees,

                              (ii)         non-employee members of the Board or
          the non-employee members of the board of directors of any Parent or
          Subsidiary, and






<PAGE>   2
                             (iii)         consultants who provide services to
the Corporation (or any Parent or Subsidiary).

                 B.       The Plan Administrator shall have full authority to
determine which eligible persons are to receive option grants under the Plan,
the time or times when such option grants are to be made, the number of shares
to be covered by each such grant, the status of the granted option as either an
Incentive Option or a Non-Statutory Option, the time or times at which each
option is to become exercisable, the vesting schedule (if any) applicable to
the option shares and the maximum term for which the option is to remain
outstanding.

       IV.       STOCK SUBJECT TO THE PLAN

                 A.       The stock issuable under the Plan shall be shares of
authorized but unissued or reacquired Common Stock.  The maximum number of
shares of Common Stock which may be issued over the term of the Plan shall not
exceed 6,000,000(1)/ shares.

                 B.       Shares of Common Stock subject to outstanding options
shall be available for subsequent issuance under the Plan to the extent (i) the
options expire or terminate for any reason prior to exercise in full or (ii)
the options are cancelled in accordance with the cancellation-regrant
provisions of Article Two.  All shares issued under the Plan, whether or not
those shares are subsequently repurchased by the Corporation pursuant to its
repurchase rights under the Plan, shall reduce on a share-for-share basis the
number of shares of Common Stock available for subsequent issuance under the
Plan.

                 C.       Should any change be made to the Common Stock by
reason of any stock split, stock dividend, recapitalization, combination of
shares, exchange of shares or other change affecting the outstanding Common
Stock as a class without the Corporation's receipt of consideration,
appropriate adjustments shall be made to (i) the maximum number and/or class of
securities issuable under the Plan and (ii) the number and/or class of
securities and the exercise price per share in effect under each outstanding
option in order to prevent the dilution or enlargement of benefits thereunder.
The adjustments determined by the Plan Administrator shall be final, binding
and conclusive.  In no event shall any such adjustments be made in connection
with the conversion of one or more outstanding shares of the Corporation's
preferred stock into shares of Common Stock.





____________________________
     (1)/ Reflects the 1,500,000-share increase authorized by the Board on
January 15, 1998, subject to stockholder approval.



                                       2.
<PAGE>   3
                                  ARTICLE TWO

                              OPTION GRANT PROGRAM


        I.       OPTION TERMS

                 Each option shall be evidenced by one or more documents in the
form approved by the Plan Administrator; provided, however, that each such
document shall comply with the terms specified below.  Each document evidencing
an Incentive Option shall, in addition, be subject to the provisions of the
Plan applicable to such options.

                 A.       EXERCISE PRICE.

                          1.      The exercise price per share shall be fixed
by the Plan Administrator in accordance with the following provisions:

                               (i)         The exercise price per share shall
          not be less than eighty-five percent (85%) of the Fair Market Value
          per share of Common Stock on the option grant date.

                              (ii)         If the person to whom the option is
          granted is a 10% Stockholder, then the exercise price per share shall
          not be less than one hundred ten percent (110%) of the Fair Market
          Value per share of Common Stock on the option grant date.

                          2.      The exercise price shall become immediately
due upon exercise of the option and shall, subject to the provisions of Section
I of Article Three and the documents evidencing the option, be payable in cash
or check made payable to the Corporation.  Should the Common Stock be
registered under Section 12(g) of the 1934 Act at the time the option is
exercised, then the exercise price may also be paid as follows:

                               (i)         in shares of Common Stock held for
          the requisite period necessary to avoid a charge to the Corporation's
          earnings for financial reporting purposes and valued at Fair Market
          Value on the Exercise Date, or

                              (ii)         to the extent the option is
          exercised for vested shares, through a special sale and remittance
          procedure pursuant to which the Optionee shall concurrently provide
          irrevocable written instructions (a) to a Corporation-designated
          brokerage firm to effect the immediate sale of the purchased shares
          and remit to the Corporation, out of the sale proceeds available on
          the settlement date, sufficient funds to cover the aggregate exercise
          price payable for the purchased shares plus all applicable Federal,
          state and local income and employment taxes required to be withheld
          by the Corporation





                                       3.
<PAGE>   4

          by reason of such exercise and (b) to the Corporation to deliver the
          certificates for the purchased shares directly to such brokerage firm
          in order to complete the sale.

                 Except to the extent such sale and remittance procedure is
utilized, payment of the exercise price for the purchased shares must be made
on the Exercise Date.

                 B.       EXERCISE AND TERM OF OPTIONS.  Each option shall be
exercisable at such time or times, during such period and for such number of
shares as shall be determined by the Plan Administrator and set forth in the
documents evidencing the option.  However, no option shall have a term in
excess of ten (10) years measured from the option grant date.

                 C.       EFFECT OF TERMINATION OF SERVICE.  The following
provisions shall govern the exercise of any options held by the Optionee at the
time of cessation of Service or death:

                               (i)         Should the Optionee cease to remain
          in Service for any reason other than Disability or death, then the
          Optionee shall have a period of three (3) months following the date
          of such cessation of Service during which to exercise each
          outstanding option held by such Optionee.

                              (ii)         Should such Service terminate by
          reason of Disability, then the Optionee shall have a period of six
          (6) months following the date of such cessation of Service during
          which to exercise each outstanding option held by such Optionee.
          However, should such Disability be deemed to constitute Permanent
          Disability, then the period during which each outstanding option held
          by the Optionee is to remain exercisable shall be extended by an
          additional six (6) months so that the exercise period shall be the
          twelve (12)-month period following the date of the Optionee's
          cessation of Service by reason of such Permanent Disability.

                             (iii)         Should the Optionee die while
          holding one or more outstanding options, then the personal
          representative of the Optionee's estate or the person or persons to
          whom the option is transferred pursuant to the Optionee's will or in
          accordance with the laws of descent and distribution shall have a
          period of twelve (12) months following the date of the Optionee's
          death during which to exercise each such option.

                              (iv)         Under no circumstances, however,
          shall any such option be exercisable after the specified expiration
          of the option term.

                               (v)         During the applicable post-Service
          exercise period, the option may not be exercised in the aggregate for
          more than the number of vested shares for which the option is
          exercisable on the date of the Optionee's cessation of Service.  Upon
          the expiration of the applicable exercise period or





                                       4.
<PAGE>   5

          (if earlier) upon the expiration of the option term, the option shall
          terminate and cease to be outstanding for any vested shares for which
          the option has not been exercised.  However, the option shall,
          immediately upon the Optionee's cessation of Service, terminate and
          cease to be outstanding to the extent it is not exercisable for
          vested shares on the date of such cessation of Service.

                 D.       STOCKHOLDER RIGHTS.  The holder of an option shall
have no stockholder rights with respect to the shares subject to the option
until such person shall have exercised the option, paid the exercise price and
become a holder of record of the purchased shares.

                 E.       UNVESTED SHARES.  The Plan Administrator shall have
the discretion to grant options which are exercisable for unvested shares of
Common Stock under the Plan.  Should the Optionee cease Service while holding
such unvested shares, the Corporation shall have the right to repurchase, at
the exercise price paid per share, all or (at the discretion of the Corporation
and with the consent of the Optionee) any of those unvested shares.  The terms
upon which such repurchase right shall be exercisable (including the period and
procedure for exercise and the appropriate vesting schedule for the purchased
shares) shall be established by the Plan Administrator and set forth in the
document evidencing such repurchase right.  The Plan Administrator may not
impose a vesting schedule upon any option grant or any shares of Common Stock
subject to the option which is more restrictive than twenty percent (20%) per
year vesting, with the initial vesting to occur one (1) year after the option
grant date.  However, such limitation shall not be applicable to any option
grants made to individuals who are officers of the Corporation, non-employee
Board members or independent consultants.

                 F.       FIRST REFUSAL RIGHTS.  Until such time as the Common
Stock is first registered under Section 12(g) of the 1934 Act, the Corporation
shall have the right of first refusal with respect to any proposed disposition
by the Optionee (or any successor in interest) of any shares of Common Stock
issued under the Plan.  Such right of first refusal shall be exercisable in
accordance with the terms established by the Plan Administrator and set forth
in the document evidencing such right.

                 G.       LIMITED TRANSFERABILITY OF OPTIONS.  During the
lifetime of the Optionee, the option shall be exercisable only by the Optionee
and shall not be assignable or transferable other than by will or by the laws
of descent and distribution following the Optionee's death.

                 H.       WITHHOLDING.  The Corporation's obligation to deliver
shares of Common Stock upon the exercise of any options granted under the Plan
shall be subject to the satisfaction of all applicable Federal, state and local
income and employment tax withholding requirements.

       II.       INCENTIVE OPTIONS

                 The terms specified below shall be applicable to all Incentive
Options.  Except as modified by the provisions of this Section II, all the
provisions of the Plan shall be applicable





                                       5.
<PAGE>   6
to Incentive Options.  Options which are specifically designated as
Non-Statutory Options shall not be subject to the terms of Section II.

                 A.       ELIGIBILITY.  Incentive Options may only be granted
to Employees.

                 B.       EXERCISE PRICE.  The exercise price per share shall
not be less than one hundred percent (100%) of the Fair Market Value per share
of Common Stock on the option grant date.

                 C.       DOLLAR LIMITATION.  The aggregate Fair Market Value
of the shares of Common Stock (determined as of the respective date or dates of
grant) for which one or more options granted to any Employee under the Plan (or
any other option plan of the Corporation or any Parent or Subsidiary) may for
the first time become exercisable as Incentive Options during any one (1)
calendar year shall not exceed the sum of One Hundred Thousand Dollars
($100,000).  To the extent the Employee holds two (2) or more such options
which become exercisable for the first time in the same calendar year, the
foregoing limitation on the exercisability of such options as Incentive Options
shall be applied on the basis of the order in which such options are granted.

                 D.       10% STOCKHOLDER.  If any Employee to whom an
Incentive Option is granted is a 10% Stockholder, then the option term shall
not exceed five (5) years measured from the option grant date.

      III.       CORPORATE TRANSACTION

                 A.       In the event of any Corporate Transaction, each
outstanding option shall terminate and cease to be outstanding, except to the
extent assumed by the successor corporation (or parent thereof) in connection
with such Corporate Transaction.  In addition, all outstanding repurchase
rights shall terminate in the event of any Corporate Transaction, except to the
extent the repurchase rights are assigned to the successor corporation (or
parent thereof) in connection with such Corporate Transaction.

                 B.       Each option which is assumed in connection with a
Corporate Transaction shall be appropriately adjusted, immediately after such
Corporate Transaction, to apply to the number and class of securities which
would have been issuable to the Optionee in the consummation of such Corporate
Transaction, had the option been exercised immediately prior to such Corporate
Transaction. Appropriate adjustments shall also be made to (i) the number and
class of securities available for issuance under the Plan following the
consummation of such Corporate Transaction and (ii) the exercise price payable
per share under each outstanding option, provided the aggregate exercise price
payable for such securities shall remain the same.

                 C.       The grant of options under the Plan shall in no way
affect the right of the Corporation to adjust, reclassify, reorganize or
otherwise change its capital or business structure





                                       6.
<PAGE>   7


or to merge, consolidate, dissolve, liquidate or sell or transfer all or any
part of its business or assets.

       IV.       CANCELLATION AND REGRANT OF OPTIONS

                 The Plan Administrator shall have the authority to effect, at
any time and from time to time, with the consent of the affected option
holders, the cancellation of any or all outstanding options under the Plan and
to grant in substitution therefor new options covering the same or different
number of shares of Common Stock but with an exercise price per share based on
the Fair Market Value per share of Common Stock on the new option grant date.









                                       7.
<PAGE>   8
                                 ARTICLE THREE

                                 MISCELLANEOUS


        I.       FINANCING

                 The Plan Administrator may permit any Optionee to pay the
option exercise price by delivering a promissory note payable in one or more
installments.  The terms of any such promissory note (including the interest
rate and the terms of repayment) shall be established by the Plan Administrator
in its sole discretion.  Promissory notes may be authorized with or without
security or collateral.  In all events, the maximum credit available to the
Optionee may not exceed the sum of (i) the aggregate option exercise price
payable for the purchased shares (less the par value of such shares) plus (ii)
any Federal, state and local income and employment tax liability incurred by
the Optionee in connection with the option exercise.

       II.       ADDITIONAL AUTHORITY

                 A.       The Plan Administrator shall have the discretion,
exercisable either at the time an option is granted or at any time while the
option remains outstanding, to extend the period of time for which the option
is to remain exercisable following the Optionee's cessation of Service or death
from the limited period otherwise in effect for that option to such greater
period of time as the Plan Administrator shall deem appropriate, but in no
event beyond the expiration of the option term.

      III.       EFFECTIVE DATE AND TERM OF THE PLAN

                 A.       The Plan became effective when adopted by the Board
in December 1995, and was approved by the Corporation's stockholders on
November 4, 1995.  The initial share reserve approved by the Board was 530,000
shares.  In 1995, the Board approved two increases in the total number of
shares authorized for issuance under the Plan, the first for 470,000 shares and
the second for an additional 500,000 shares.  On October 12, 1995, the Board
approved a restatement of the Plan to bring it into compliance with the
requirements of the California Department of Corporations.  The Plan was
amended by the Board on February 12, 1996, and such increase was approved by
the Corporation's stockholders.  The Plan was further amended by the Board on
January 30, 1997 to increase the number of shares of Common Stock authorized
for issuance over the term of the Plan from 3,500,000 to 4,500,000 shares, and
such increase was approved by the Corporation's stockholders.  The Plan was
further amended by the Board on January 15, 1998 to increase the number of
shares of Common Stock authorized for issuance over the term of the Plan from
4,500,000 to 6,000,000 shares, subject to the approval of such share increase
by the Corporation's stockholders within the succeeding twelve (12) months. No
option grants made on the basis of the 1,500,000-share increase shall become
exercisable in whole or in part unless and until such stockholder approval is
obtained.  Should such stockholder approval not be obtained within twelve (12)
months after the date the excess grants are first made, then





                                       8.
<PAGE>   9
any options granted on the basis of such excess shares shall terminate without
ever becoming exercisable for those shares, and no further option grants shall
be made on the basis of such share increase.

                 B.       The Plan shall terminate upon the earliest of (i) the
expiration of the ten (10)-year period measured from the date the Plan is
adopted by the Board, (ii) the date on which all shares available for issuance
under the Plan shall have been issued or (iii) the termination of all
outstanding options in connection with a Corporate Transaction.  Upon such Plan
termination, all options and unvested stock issuances outstanding under the
Plan shall continue to have full force and effect in accordance with the
provisions of the documents evidencing such options or issuances.

       IV.       AMENDMENT OF THE PLAN

                 A.       The Board shall have complete and exclusive power and
authority to amend or modify the Plan in any or all respects.  However, no such
amendment or modification shall, without the consent of the Optionees,
adversely affect their rights and obligations under their outstanding options.
In addition, the Board shall not, without the approval of the Corporation's
stockholders, (i) increase the maximum number of shares issuable under the
Plan, except for permissible adjustments in the event of certain changes in the
Corporation's capitalization, (ii) materially modify the eligibility
requirements for Plan participation or (iii) materially increase the benefits
accruing to Plan participants.



        V.       USE OF PROCEEDS

                 Any cash proceeds received by the Corporation from the sale of
shares of Common Stock under the Plan shall be used for general corporate
purposes.

       VI.       REGULATORY APPROVALS

                 The implementation of the Plan, the granting of any options
under the Plan and the issuance of any shares of Common Stock upon the exercise
of any option shall be subject to the Corporation's procurement of all
approvals and permits required by regulatory authorities having jurisdiction
over the Plan, the options granted under it and the shares of Common Stock
issued pursuant to it.


      VII.       NO EMPLOYMENT OR SERVICE RIGHTS

                 Nothing in the Plan shall confer upon the Optionee any right
to continue in Service for any period of specific duration or interfere with or
otherwise restrict in any way the rights of the Corporation (or any Parent or
Subsidiary employing or retaining Optionee) or of the





                                       9.
<PAGE>   10

Optionee, which rights are hereby expressly reserved by each, to terminate the
Optionee's Service at any time for any reason, with or without cause.

     VIII.       FINANCIAL REPORTS

                 The Corporation shall deliver a balance sheet and an income
statement at least annually to each individual holding an outstanding option
under the Plan, unless such individual is a key Employee whose duties in
connection with the Corporation (or any Parent or Subsidiary) assure such
individual access to equivalent information.














                                        10.
<PAGE>   11
                                    APPENDIX


                 The following definitions shall be in effect under the Plan:

          A.     BOARD shall mean the Corporation's Board of Directors.

          B.     CODE shall mean the Internal Revenue Code of 1986, as amended.

          C.     COMMITTEE shall mean a committee of two (2) or more Board
members appointed by the Board to exercise one or more administrative functions
under the Plan.

          D.     COMMON STOCK shall mean the Corporation's common stock.

          E.     CORPORATE TRANSACTION shall mean either of the following
stockholder-approved transactions to which the Corporation is a party:

                      (i)         a merger or consolidation in which the
          Corporation's outstanding securities are transferred to a person or
          persons different from the persons holding those securities
          immediately prior to such transaction, or

                      (ii)        the sale, transfer or other disposition of
          all or substantially all of the Corporation's assets in complete
          liquidation or dissolution of the Corporation.

          F.     CORPORATION shall mean Com21, Inc., a Delaware corporation.

          G.     DISABILITY shall mean the inability of the Optionee to engage
in any substantial gainful activity by reason of any medically determinable
physical or mental impairment and shall be determined by the Plan Administrator
on the basis of such medical evidence as the Plan Administrator deems warranted
under the circumstances.  Disability shall be deemed to constitute PERMANENT
DISABILITY in the event that such Disability is expected to result in death or
has lasted or can be expected to last for a continuous period of twelve (12)
months or more.

          H.     EMPLOYEE shall mean an individual who is in the employ of the
Corporation (or any Parent or Subsidiary), subject to the control and direction
of the employer entity as to both the work to be performed and the manner and
method of performance.

          I.     EXERCISE DATE shall mean the date on which the Corporation
shall have received written notice of the option exercise.

          J.     FAIR MARKET VALUE per share of Common Stock on any relevant
date shall be determined in accordance with the following provisions:





                                      A-1.
<PAGE>   12
                      (i)         If the Common Stock is at the time traded on
          the Nasdaq National Market, then the Fair Market Value shall be the
          closing selling price per share of Common Stock on the date in
          question, as such price is reported by the National Association of
          Securities Dealers on the Nasdaq National Market or any successor
          system.  If there is no closing selling price for the Common Stock on
          the date in question, then the Fair Market Value shall be the closing
          selling price on the last preceding date for which such quotation
          exists.

                      (ii)        If the Common Stock is at the time listed on
          any Stock Exchange, then the Fair Market Value shall be the closing
          selling price per share of Common Stock on the date in question on
          the Stock Exchange determined by the Plan Administrator to be the
          primary market for the Common Stock, as such price is officially
          quoted in the composite tape of transactions on such exchange.  If
          there is no closing selling price for the Common Stock on the date in
          question, then the Fair Market Value shall be the closing selling
          price on the last preceding date for which such quotation exists.

                    (iii)         If the Common Stock is at the time neither
          listed on any Stock Exchange nor traded on the Nasdaq National
          Market, then the Fair Market Value shall be determined by the Plan
          Administrator after taking into account such factors as the Plan
          Administrator shall deem appropriate.

          K.     INCENTIVE OPTION shall mean an option which satisfies the
requirements of Code Section 422.

          L.     1934 ACT shall mean the Securities Exchange Act of 1934, as
amended.

          M.     NON-STATUTORY OPTION shall mean an option not intended to
satisfy  the requirements of Code Section 422.

          N.     OPTIONEE shall mean any person to whom an option is granted
under the Plan.

          O.     PARENT shall mean any corporation (other than the Corporation)
in an unbroken chain of corporations ending with the Corporation, provided each
corporation in the unbroken chain (other than the Corporation) owns, at the
time of the determination, stock possessing fifty percent (50%) or more of the
total combined voting power of all classes of stock in one of the other
corporations in such chain.

          P.     PLAN shall mean the Corporation's 1995 Stock Option Plan, as
set forth in this document.

          Q.     PLAN ADMINISTRATOR shall mean either the Board or the
Committee, to the extent the Committee is at the time responsible for the
administration of the Plan.





                                      A-2.
<PAGE>   13
          R.     SERVICE shall mean the provision of services to the
Corporation (or any Parent or Subsidiary) by a person in the capacity of an
Employee, a non-employee member of the board of directors or a consultant,
except to the extent otherwise specifically provided in the documents
evidencing the option grant.

          S.     STOCK EXCHANGE shall mean either the American Stock Exchange
or the New York Stock Exchange.

          T.     SUBSIDIARY shall mean any corporation (other than the
Corporation) in an unbroken chain of corporations beginning with the
Corporation, provided each corporation (other than the last corporation) in the
unbroken chain owns, at the time of the determination, stock possessing fifty
percent (50%) or more of the total combined voting power of all classes of
stock in one of the other corporations in such chain.

          U.     10% STOCKHOLDER shall mean the owner of stock (as determined
under Code Section 424(d)) possessing more than ten percent (10%) of the total
combined voting power of all classes of stock of the Corporation (or any Parent
or Subsidiary).





                                      A-3.


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