EXOGEN INC
S-8, 1998-05-04
ELECTROMEDICAL & ELECTROTHERAPEUTIC APPARATUS
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As filed with the Securities and Exchange Commission on May 4, 1998
                                               Registration No._________________


                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM S-8
                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933

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


          Delaware                                       22-3208468
- --------------------------------------------------------------------------------
(State or other jurisdiction                   (IRS Employer Identification No.)
of incorporation or organization)


       10 Constitution Avenue, P.O. Box 6860, Piscataway, New Jersey 08855
- --------------------------------------------------------------------------------
               (Address of principal executive offices) (Zip code)


                      1995 STOCK OPTION/STOCK ISSUANCE PLAN
                          EMPLOYEE STOCK PURCHASE PLAN
                            (Full title of the Plans)

                               Patrick A. McBrayer
                      Chief Executive officer and President

                                  EXOGEN, INC.
       10 Constitution Avenue, P.O. Box 6860, Piscataway, New Jersey 08855
                     (Name and address of agent for service)

                                 (732) 981-0990
          (Telephone number, including area code, of agent for service)
<PAGE>
<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>
1995 Stock Option/
Stock Issuance Plan

Options to purchase
Common Stock                        600,000 shares          N/A                 N/A                      N/A

Common Stock,
$0.0001 par value                   600,000 shares          $4.81               $2,886,000               $  851.37
                                                                      

Employee Stock Purchase Plan

Common Stock,
$0.0001 par value                   200,000 shares          $4.81               $  962,000               $  283.79 
                                                              

                                                                              Aggregate Filing Fee:      $1,135.16
</TABLE>
(1)      This  Registration  Statement shall also cover any additional shares of
         Common Stock which become  issuable  under the 1995 Stock  Option/Stock
         Issuance  Plan and/or  Employee  Stock  Purchase  Plan by reason of any
         stock  dividend,   stock  split,   recapitalization  or  other  similar
         transaction effected without the receipt of consideration which results
         in an increase in the number of the outstanding  shares of Common Stock
         of Exogen, Inc.

(2)      Calculated  solely for purposes of this  offering  under Rule 457(h) of
         the Securities Act of 1933, as amended,  on the basis of the average of
         the high and low  selling  prices per share of Common  Stock of Exogen,
         Inc. on April 30, 1998, as reported by the Nasdaq National
         Market.
<PAGE>
                                     PART II

               Information Required in the Registration Statement

Item 3.  Incorporation of Documents by Reference

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

         (a)      The  Registrant's  Annual  Report on Form 10-K for the  fiscal
                  year ended September 30, 1997,  filed with the SEC on December
                  19, 1997;

         (b)      The Registrant's  Quarterly Report on Form 10-Q for the fiscal
                  quarter ended  December 31, 1997,  filed with the with the SEC
                  on February 6, 1998; and

         (c)      The Registrant's Registration Statement No. 26154 on Form 8-A,
                  and  amendments  thereto,  filed with the SEC on May 26, 1995,
                  pursuant to Section 12 of the  Securities  and Exchange Act of
                  1934 (the "1934 Act") 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 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  deregisters  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 such 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

         Section 145 of the Delaware General  Corporation Law authorizes a court
to award or a  corporation's  Board of  Directors  to grant  indemnification  to
directors   and   officers   in  terms   sufficiently   broad  to  permit   such
indemnification   under  certain   circumstances   for  liabilities   (including
reimbursement for expenses  incurred) arising under the 1933 Act. Articles 8 and
<PAGE>
9 of the Registrant's  Second Amended and Restated  Certificate of Incorporation
provide for  indemnification  of its  directors  and  officers  and  permissible
indemnification of employees and other agents to the maximum extent permitted by
the  Delaware  General  Corporation  Law.  The  Company has  obtained  liability
insurance for its officers and directors.


Item 7.  Exemption from Registration Claimed

                  Not applicable.


Item 8.  Exhibits

  Exhibit Number                        Exhibit
  --------------                        -------

         4        Instruments Defining Rights of Shareholders. Reference is made
                  to Registrant's  Registration  Statement No. 26154 on Form 8-A
                  and  amendments  thereto  which  are  incorporated  herein  by
                  reference pursuant to Item 3(b).
         5        Opinion and Consent of Brobeck,  Phleger & Harrison  LLP. 
         23.1     Consent of Arthur Andersen LLP, Independent Accountants. 
         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     1995 Stock Option/Stock  Issuance Plan (as amended on November
                  14, 1997).
         99.2*    Form of Notice of Grant of Stock Option.
         99.3     Form of Stock Option Agreement (Installment Option).
         99.4     Form of  Addendum to Stock  Option  Agreement  (Limited  Stock
                  Appreciation Right).
         99.5*    Form of  Addendum  to  Stock  Option  Agreement  (Special  Tax
                  Elections).
         99.6*    Form of Notice of Grant of  Automatic  Stock  Option  (Initial
                  Grant).
         99.7*    Form of  Notice Of Grant of  Automatic  Stock  Option  (Annual
                  Grant).
         99.8     Form of Automatic Stock Option Agreement.
         99.9     Employee  Stock  Purchase  Plan (as  amended on  November  14,
                  1997).
         99.10*   Form of Stock  Purchase  Agreement  under the  Employee  Stock
                  Purchase Plan.
         99.11*   Form of Enrollment/Change Form.
         99.12*   Form of Special Officer Participation Form.

         *  Exhibits  99.2,  99.5,  99.6,  99.7,  99.10,  99.11  and  99.12  are
incorporated  herein by reference to Exhibits 99.2,  99.5,  99.6,  99.7,  99.13,
99.14 and  99.15,  respectively,  to  Registrant's  Registration  Statement  No.
33-94750 on Form S-8, filed with the SEC on July 19, 1995.
<PAGE>
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 the 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 disclosed in the 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
paragraphs 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  1995 Stock  Option/Stock
Issuance Plan and/or 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 the 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  foregoing  provisions,   or  otherwise,  the
Registrant   has  been  advised   that,   in  the  opinion  of  the  SEC,   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.
<PAGE>
                                   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 Piscataway,  State of New Jersey,  on
this 30th day of April, 1998.


                                           EXOGEN, INC.

                                      By:  /s/Patrick A. McBrayer
                                           ----------------------
                                           Patrick A. McBrayer
                                           Chief Executive Officer and President


                                POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS:

                  That the undersigned officers and directors of Exogen, Inc., a
Delaware  corporation,  do hereby constitute and appoint Patrick A. McBrayer and
Richard H. Reisner,  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 of them, shall do or cause to be done
by virtue hereof. This Power of Attorney may be signed in several counterparts.
<PAGE>
                  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>
Signatures                  Title                                          Date
- ----------                  -----                                          ----
<S>                         <C>                                            <C>
/s/Patrick A. McBrayer      Chief Executive Officer, President,            April 30, 1998
- -----------------------     and Director                    
Patrick A. McBrayer         (Principal Executive Officer)   


/s/Richard H. Reisner       Vice President, Chief Financial Officer,       April 30, 1998
- ---------------------       and Secretary                  
Richard H. Reisner          (Principal Financial Officer)  


/s/John P. Ryaby            Director                                       April 30, 1998
- ----------------
John P. Ryaby


/s/Buzz Benson              Director                                       April 30, 1998
- --------------
Buzz Benson


/s/Donald J. Lothrop        Director                                       April 30, 1998
- --------------------
Donald J. Lothrop


/s/Terence D. Wall          Director                                       April 30, 1998
- ------------------
Terence D. Wall


/s/David J. Ottensmeyer     Director                                       April 30, 1998
- -----------------------
David J. Ottensmeyer


/s/Peter C. Madeja          Director                                       April 30, 1998
- ------------------
Peter C. Madeja
</TABLE>
<PAGE>













                       SECURITIES AND EXCHANGE COMMISSION
                                WASHINGTON, D.C.


                                    EXHIBITS

                                       TO

                                    FORM S-8

                                      UNDER

                             SECURITIES ACT OF 1933


                                  EXOGEN, INC.



<PAGE>
                                  EXHIBIT INDEX




    Exhibit Number                      Exhibit
    --------------                      -------

         4        Instruments Defining Rights of Shareholders. Reference is made
                  to Registrant's  Registration  Statement No. 26154 on Form 8-A
                  which is  incorporated  herein by  reference  pursuant to Item
                  3(d).
         5        Opinion and Consent of Brobeck, Phleger & Harrison LLP.
         23.1     Consent of Arthur Andersen LLP, Independent Auditors.
         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     1995 Stock Option/Stock  Issuance Plan (as amended on November
                  14, 1997).
         99.2*    Form of Notice of Grant of Stock Option.
         99.3     Form of Stock Option Agreement (Installment Option).
         99.4     Form of  Addendum to Stock  Option  Agreement  (Limited  Stock
                  Appreciation Right).
         99.5*    Form of  Addendum  to  Stock  Option  Agreement  (Special  Tax
                  Elections).
         99.6*    Form of Notice of Grant of  Automatic  Stock  Option  (Initial
                  Grant).
         99.7*    Form of Notice of Automatic Stock Option (Annual Grant).
         99.8     Form of Automatic Stock Option Agreement.
         99.9     Employee  Stock  Purchase  Plan (as  amended on  November  14,
                  1997).
         99.10*   Form of Stock  Purchase  Agreement  under the  Employee  Stock
                  Purchase Plan.
         99.11*   Form of Enrollment/Change Form.
         99.12*   Form of Special Officer Participation Form.


         *  Exhibits  99.2,  99.5,  99.6,  99.7,  99.10,  99.11  and  99.12  are
incorporated  herein by reference to Exhibits 99.2,  99.5,  99.6,  99.7,  99.13,
99.14 and  99.15,  respectively,  to  Registrant's  Registration  Statement  No.
33-94750 on Form S-8, filed with the SEC on July 19, 1995.

 











                                    EXHIBIT 5

             Opinion and Consent of Brobeck, Phleger & Harrison LLP


<PAGE>

                                                                     May 4, 1998






EXOGEN, INC.
10 Constitution Avenue
P.O. Box 6860
Piscataway, New Jersey  08855

         Re:      Exogen, Inc. (the "Company")
                  Registration Statement for Registration
                  of an Aggregate of 800,000 Shares of Common Stock


Ladies and Gentlemen:

         We  refer  to  your   registration  on  Form  S-8  (the   "Registration
Statement")  under  the  Securities  Act of 1933,  as  amended,  of (i)  600,000
additional  shares of the common stock  ("Common  Stock") of Exogen,  Inc.  (the
"Company")  issuable under the Company's 1995 Stock Option/Stock  Issuance Plan,
(the "Option Plan") and (ii) 200,000  additional shares of Common Stock issuable
under the Employee  Stock  Purchase Plan (the  "Purchase  Plan").  We advise you
that, in our opinion, when such shares have been issued and sold pursuant to the
applicable provisions of the Option Plan and the Purchase Plan and in accordance
with the Registration Statement,  such shares will be validly issued, fully paid
and non-assessable shares of the Company's Common Stock.

         We hereby  consent to the  filing of this  opinion as an exhibit to the
Registration Statement.


                                              Very truly yours,


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


 



                                  EXHIBIT 23.1

              Consent of Arthur Andersen LLP, Independent Auditors


<PAGE>





                     CONSENT OF INDEPENDENT PUBLIC ACCOUNTS

         As   independent   public   accountants,   we  hereby  consent  to  the
incorporation by reference in this form S-8 registration statement of our report
dated November 3, 1997 (except with respect to the matters discussed in Note 15,
as to which the date is November 4, 1997)  included in Exogen,  Inc.'s Form 10-K
for the year ended September 30, 1997 and to all references to our firm included
in this registration statement.


                                                          /s/ARTHUR ANDERSEN LLP
                                                          ----------------------
                                                             ARTHUR ANDERSEN LLP





New York, New York
May 4, 1998

 



                                  EXHIBIT 99.1

                      1995 Stock Option/Stock Issuance Plan
                        (As amended on November 14, 1997)



<PAGE>
                                  EXOGEN, INC.
                      1995 STOCK OPTION/STOCK ISSUANCE PLAN

                     (As Amended through November 14, 1997)

                                   ARTICLE ONE

                               GENERAL PROVISIONS


        I.        PURPOSE OF THE PLAN

                  This 1995 Stock  Option/Stock  Issuance  Plan is  intended  to
promote the  interests  of Exogen,  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  four  separate  equity
         programs:

                           (i) 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,

                           (ii) the Salary Investment Option Grant Program under
         which  eligible  employees  may elect to have a portion  of their  base
         salary  invested  each year in  options  to  purchase  shares of Common
         Stock,

                           (iii) 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), and

                           (iv) the  Automatic  Option Grant Program under which
         Eligible  Directors  shall  automatically   receive  option  grants  at
         periodic intervals to purchase shares of Common Stock.


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

      III.        ADMINISTRATION OF THE PLAN

                  A.  The  Board  shall  have   authority  to   administer   the
Discretionary  Option Grant,  Salary  Investment Option Grant and Stock Issuance
Programs with respect to Section 16 Insiders. However the Board may, at its sole
discretion, delegate such authority to the Primary Committee.
<PAGE>
                  B.  Administration of the Discretionary  Option Grant,  Salary
Investment  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 such
persons.

                  C. 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  committee  and reassume  all powers and  authority  previously
delegated to such committee.

                  D.  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,
Salary  Investment  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,  Salary
Investment  Option Grant or Stock Issuance Program under its jurisdiction or any
option or stock issuance thereunder.

                  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.

                  F.  Administration of the Automatic Option Grant Program shall
be  self-executing  in accordance  with the terms of that  program,  and no Plan
Administrator shall exercise any discretionary  functions with respect to option
grants made thereunder.

      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  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 and
Salary Investment  Option Grant Programs,  which eligible persons are to receive
<PAGE>
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 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  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  to be paid by the  Participant  for such
shares.

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

                  E. The  individuals  eligible to  participate in the Automatic
Option Grant Program shall be those  individuals  who first become  non-employee
Board members after the Effective Date, whether through appointment by the Board
or  election  by the  Corporation's  stockholders,  and  those  individuals  who
continue to serve as  non-employee  Board members  after the  Effective  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  Option  Grant  Program at the time he or she
first becomes a non-employee Board member, but such individual shall be eligible
to receive  periodic option grants under the Automatic Option Grant Program upon
his or her  continued  service  as a  non-employee  Board  member at one or more
Annual Stockholders Meetings.

        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 which may be issued  over the term of the Plan shall not exceed  1,350,000
shares.  Such authorized  share reserve reflects the 1-for-2 reverse stock split
effected  prior to the  Effective  Date and is  comprised  of (i) the  number of
shares which remained  available for issuance,  as of the Effective Date,  under
the  Predecessor  Plan  as  last  approved  by the  Corporation's  stockholders,
including the shares subject to the outstanding  options  incorporated  into the
Plan and any other  shares  which would have been  available  for future  option
grants under the Predecessor Plan, (ii) an increase of 500,000 shares authorized
by the  Board  and  approved  by the  Corporation's  stockholders  prior  to the
Effective Date and (iii) an increase of 600,000  shares  authorized by the Board
in November 1997,  subject to approval by the Corporation's  stockholders at the
1998 Annual Meeting.

                  B.  No one  person  participating  in  the  Plan  may  receive
options,  separately  exercisable  stock  appreciation  rights and direct  stock
issuances for more than 300,000 shares of Common Stock per calendar year.

                  C. Shares of Common Stock subject to outstanding options shall
be  available  for  subsequent  issuance  under the Plan to the  extent  (i) the
options (including any options incorporated from the Predecessor Plan) 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.
<PAGE>
Unvested shares issued under the Plan and subsequently  cancelled or repurchased
by the  Corporation,  at the  original  exercise or direct  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,
shares  subject  to  any  options  surrendered  in  connection  with  the  stock
appreciation right provisions of the Plan shall not be available for reissuance.
In addition,  should the exercise  price of an option under the Plan  (including
any option incorporated from the Predecessor Plan) be paid with shares of Common
Stock or should  shares of Common  Stock  otherwise  issuable  under the Plan 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.

                  D. 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,  (ii) the number and/or class of securities  for which
any one person may be granted options, separately exercisable stock appreciation
rights and direct stock  issuances  per calendar  year,  (iii) the number and/or
class of securities  for which  automatic  option grants are to be  subsequently
made per Eligible Director under the Automatic Option Grant Program and (iv) the
number  and/or class of  securities  and the exercise  price per share in effect
under  each  outstanding  option  (including  any option  incorporated  from the
Predecessor  Plan) in order to prevent the dilution or  enlargement  of benefits
thereunder. The adjustments determined by the Plan Administrator shall be final,
binding and conclusive.
<PAGE>
                                   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 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
         written 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 transaction.

                  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.
<PAGE>
                  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)  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 it is not otherwise at that time  exercisable  for vested
         shares.

                                  (iv)   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.

                                  (v) In the event of an Involuntary Termination
         following a Corporate Transaction,the provisions of Section III of this
         Article Two shall govern the period for which the  outstanding  options
         are to remain exercisable following the Optionee's cessation of Service
         and shall supersede any provisions to the contrary in this Section.

                           2. 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:

                                  (i)  extend  the  period of time for which the
         option is to remain exercisable  following the Optionee's  cessation of
         Service  from the 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

                                  (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
<PAGE>
         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 under the option 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. However,  Nonstatutory
Options 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 Six  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.  Dollar   Limitation.   The  aggregate  Fair  Market  Value
(determined as of the respective date or dates of grant) of the shares of Common
Stock 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.
<PAGE>
                  C.  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  for all of the 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 so accelerate
if and to the  extent:  (i) such  option is, in  connection  with the  Corporate
Transaction,  either to be  assumed  by the  successor  corporation  (or  parent
thereof) or to be replaced  with a comparable  option to purchase  shares of the
capital stock of the successor corporation (or parent thereof), (ii) such option
is to be replaced with a cash  incentive  program of the  successor  corporation
which preserves the spread existing on the unvested option shares at the time of
the Corporate  Transaction and provides for subsequent payout in accordance with
the same vesting schedule applicable to such option or (iii) the acceleration of
such option is subject to other limitations imposed by the Plan Administrator at
the time of the option grant. The  determination of option  comparability  under
clause (i) above shall be made by the Plan Administrator,  and its determination
shall be final, binding and conclusive.

                  B. All  outstanding  repurchase  rights  shall also  terminate
automatically, 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).

                  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  shall  also be made to (i) the  number  and  class  of
securities  available  for issuance  under the Plan on both an aggregate and per
individual  basis 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.

                  E. Any options  which are assumed or replaced in the Corporate
Transaction  and do not otherwise  accelerate  at that time shall  automatically
accelerate (and any of the Corporation's  outstanding repurchase rights which do
not  otherwise  terminate  at  the  time  of  the  Corporate  Transaction  shall
<PAGE>
automatically  terminate  and the  shares  of  Common  Stock  subject  to  those
terminated  rights shall  immediately  vest in full) in the event the Optionee's
Service should  subsequently  terminate by reason of an Involuntary  Termination
within  eighteen  (18) months  following the  effective  date of such  Corporate
Transaction.   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.

                  F. Each outstanding option shall automatically accelerate (and
any 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  the  Optionee's  Service  should  terminate  by reason of an
Involuntary Termination within eighteen (18) months following the effective date
of a Change in Control.  Any options so accelerated shall remain exercisable for
fully-vested  shares until the earlier of (i) the  expiration of the option term
(ii) the expiration of the one (1)-year  period measured from the effective date
of the Involuntary Termination.

                  G.  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 limitation is not exceeded. To the extent such dollar limitation
is exceeded,  the  accelerated  portion of such option shall be exercisable as a
Non-Statutory Option under the Federal tax laws.

                  H. The grant of options under the  Discretionary  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.        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 option 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
<PAGE>
         shares of Common Stock and 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.  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
         rejected 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 such 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.

                                  (iii)    The    Plan    Administrator    shall
         pre-approve,  at the time the limited right is granted,  the subsequent
         exercise  of that right in  accordance  with the terms of the grant and
         the  provisions of this Section V. No  additional  approval of the Plan
         Administrator  shall  be  required  at the  time of the  actual  option
         surrender and cash distribution.

                                  (iv) The  balance of the option (if any) shall
         continue  in full force and  effect in  accordance  with the  documents
         evidencing such option.
<PAGE>
                                  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  Program  is to be in  effect  and to  select  the  Employees
eligible to participate in the Salary  Investment  Option Grant Program for such
calendar year or years.  Each selected Employee 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 a  designated  multiple of one percent  (1%).
However, the amount of such salary reduction must be not less than Five Thousand
Dollars  ($5,000.00)  and must not be more than the lesser of (i) twenty percent
(20%) of his or her rate of base  salary for the  calendar  year or (ii)  Twenty
Thousand  Dollars  ($20,000.00).  Each  individual  who  files a  proper  salary
reduction  authorization  shall  automatically  be granted an option  under this
Salary  Investment  Option Grant  Program on the first trading day in January of
the calendar year for which that 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.

                  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 Optionee's  base salary
                           reduction for the calendar year, and

                           B is the Fair Market  Value per share of Common Stock
                           on the option grant date.
<PAGE>
                  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 two (2)-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 the
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 two
(2)-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

                  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 for all of the 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  option  term  or  (ii)  the
expiration  of the two  (2)-year  period  measured  from the date of  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  for all of the
shares of Common  Stock at the time  subject to such option and may be exercised
for any or all of such shares as fully-vested shares of Common Stock. The option
shall  remain so  exercisable  until the  earlier of (i) the  expiration  of the
option term or (ii) the expiration of the two (2)-year  period measured from the
date of Optionee's cessation of Service.

                  C. 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.
<PAGE>
      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.
<PAGE>
                                  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 the Fair Market Value per share
of Common Stock on the stock issuance date.

                           2. Subject to the  provisions of Section I of Article
Six 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


                                  (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,
<PAGE>
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 such surrendered shares.

                           5. The Plan Administrator may in its discretion waive
the surrender and  cancellation  of one or more unvested  shares of Common Stock
(or other assets  attributable  thereto)  which would  otherwise  occur upon the
cessation  of the  Participant's  Service or the  non-completion  of the vesting
schedule  applicable  to such 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.

       II.        CORPORATE TRANSACTION/CHANGE IN CONTROL

                  A. All of the  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  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. Any  repurchase  rights that are assigned in the  Corporate
Transaction shall  automatically  terminate,  and all the shares of Common Stock
subject to those terminated  rights shall immediately vest in full, in the event
the  Participant's  Service  should  subsequently  terminate  by  reason  of  an
Involuntary Termination within eighteen (18) months following the effective date
of such Corporate Transaction.

                  C. All of the  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 the  Optionee's  service  should  terminate  by  reason of an  Involuntary
Termination within eighteen (18) months following the effective date of a Change
in Control.
<PAGE>
      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.
<PAGE>
                                  ARTICLE FIVE

                         AUTOMATIC OPTION GRANT PROGRAM


        I.        OPTION TERMS

                  A.  Grant  Dates.  Option  grants  shall be made on the  dates
specified below:

                           1. Each  Eligible  Director  who is first  elected or
appointed  as a  non-employee  Board  member  after  the  Effective  Date  shall
automatically be granted, on the date of such initial election or appointment, a
Non-Statutory Option to purchase 7,500 shares of Common Stock.

                           2. On the date of each Annual  Stockholders  Meeting,
beginning with the 1996 Annual  Meeting,  each  individual who is to continue to
serve as an Eligible  Director shall  automatically  be granted a  Non-Statutory
Option to purchase an  additional  1,250 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 1,250-share option grants
any one Eligible Director may receive over his or her period of 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 grant shall vest, and the
Corporation's  repurchase  right shall lapse,  in a series of four (4) equal and
successive  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  grant  shall vest,  and the  Corporation's  repurchase  right shall
lapse, upon the Optionee's  completion of one (1) year of Board service measured
from the option grant date.

                  E.  Effect of  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:
<PAGE>
                                  (i)  Should the  Optionee  cease to serve as a
         Board member for any reason (other than death or Permanent Disability),
         then the Optionee shall have a six (6)-month  period following the date
         of such  cessation  of Board  service  in which to  exercise  each such
         option.

                                  (ii) Should the  Optionee die while the option
         is  outstanding,  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  twelve  (12)-  month  period
         following  the date of the  Optionee's  cessation  of Board  service in
         which to exercise each such option.

                                  (iii) During the limited 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 at the
         time of the Optionee's cessation of Board service.

                                  (iv) 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
         the Optionee's death or Permanent  Disability,  be exercised for all or
         any portion of such shares as fully-vested shares of Common Stock.

                                  (v)  In  no  event  shall  the  option  remain
         exercisable   after  the  expiration  of  the  option  term.  Upon  the
         expiration of the limited post-service  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,  terminate  and  cease to be
         outstanding to the extent it is not otherwise at that time  exercisable
         for vested shares.

       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 such  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
<PAGE>
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  such  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. 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  automatic  option  held by him or her.  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.  Stockholder  approval
of the  amendments  to the  Plan at the 1998  Annual  Meeting  shall  constitute
preapproval  of the  grant  of each  such  option  surrender  right  under  this
Automatic  Option  Grant  Program and the  subsequent  exercise of that right in
accordance  with the terms and  provisions  of this Section  II.C. No additional
approval or consent of the Plan  Administrator  shall be required at the time of
the actual option surrender and cash distribution.

                  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  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.

                  E. 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.
<PAGE>
                                   ARTICLE SIX

                                  MISCELLANEOUS


        I.        FINANCING

                  A.  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 for shares issued under the Stock  Issuance
Program 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 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.

                  B. The Plan  Administrator  may, in its discretion,  determine
that one or more such  promissory  notes shall be subject to  forgiveness by the
Corporation  in whole or in part upon such terms as the Plan  Administrator  may
deem appropriate.

       II.        TAX WITHHOLDING

                  A. The  Corporation's  obligation to deliver  shares of Common
Stock upon the  exercise  of options  or stock  appreciation  rights or upon 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 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:

                                  (i) 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.

                                  (ii) 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.
<PAGE>
      III.        EFFECTIVE DATE AND TERM OF PLAN

                  A. The Plan was  adopted by the Board on May 25,  1995 and was
subsequently  approved  by  the  Corporation's  stockholders.  The  Plan  became
effective on the Effective Date.

                  B. On  November  14,  1997  the  Board  adopted  a  series  of
amendments  to the Plan which (i) increased the number of shares of Common Stock
reserved for issuance over the term of the Plan by an additional 600,000 shares,
(ii) rendered all  non-employee  Board members eligible to receive option grants
and  direct  stock  issuances  under the  Discretionary  Option  Grant and Stock
Issuance  Programs,  (iii)  allowed  unvested  shares  issued under the Plan and
subsequently  repurchased  by the  Corporation  at the option  exercise price or
direct  issue price paid per share to be reissued  under the Plan,  (iv) removed
certain  restrictions on the eligibility of non-employee  Board members to serve
as Plan  Administrator,  and (v) effected a series of additional  changes to the
provisions of the Plan  (including the  stockholder  approval  requirements)  in
order to take  advantage  of the 1996  amendments  to Rule 16b-3 of the 1934 Act
which exempts certain officer and director  transactions under the Plan from the
short-swing  liability provisions of the federal securities laws. The amendments
listed above are subject to stockholder  approval at the 1998 Annual Meeting. In
addition  to such  amendments,  the  Board,  without  the need  for  stockholder
approval,  amended the Plan to (i) allow the Board or the Primary  Committee  to
administer   the  Plan  with  respect  to  Section  16   Insiders,   (ii)  allow
Non-Statutory  Options  to be  transferred  in limited  circumstances  and (iii)
eliminiate the six (6)-month holding  requirement for limited stock appreciation
rights. Should the required stockholder approval of the November 1997 amendments
not be obtained, then the amendments to the Plan which required such stockholder
approval shall have no force and effect and any options  granted on the basis of
the  600,000-share  increase  shall  terminate  and cease to remain  outstanding
without ever becoming exercisable for those shares, and no further option grants
shall be made on the basis of such  increase.  The  provisions of the Plan as in
effect immediately prior to the November 1997 amendments  requiring  shareholder
approval  shall  automatically  be  reinstated,  and  option  grants  and  share
issuances  may  thereafter  continue  to be  made  pursuant  to  the  reinstated
provisions of the Plan.

                  C. The Plan shall serve as the  successor  to the  Predecessor
Plan,  and no further  option  grants shall be made under the  Predecessor  Plan
after the Effective Date. All options  outstanding under the Predecessor Plan on
such date shall,  immediately  upon  approval of the Plan by the  Corporations's
stockholders,  be incorporated into the Plan and 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.

                  D. One or more  provisions  of the  Plan,  including  (without
limitation) the option/vesting acceleration provisions of Article Two applicable
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.

                  E. The Plan shall terminate upon the earliest of (i) April 30,
2005,  (ii) the date on which all shares  available for issuance  under the Plan
shall have been issued  pursuant to the  exercise of the options or the issuance
<PAGE>
of shares  (whether  vested or unvested) under the Plan or (iii) the termination
of all outstanding  options in connection with a Corporate  Transaction.  Upon a
clause (i) termination,  all options and unvested stock issuances outstanding on
such date shall thereafter  continue to have 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 adversely affect the rights and obligations with
respect to options, stock appreciation rights 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 and regulations.

                  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 are 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 option
or stock  appreciation  right  under the Plan and the  issuance of any shares of
Common Stock (i) upon the exercise of any option or stock  appreciation right 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 options and stock  appreciation  rights
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.
<PAGE>
      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.
<PAGE>
                                    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 which
         the Board does not recommend such stockholders to accept, 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 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.

         G. Corporation shall mean Exogen, Inc., a Delaware corporation.

         H.  Discretionary  Option Grant  Program  shall mean the  discretionary
option grant program in effect under the Plan.

         I.  Effective  Date  shall  mean  the date on  which  the  Underwriting
Agreement is executed and the initial public  offering price of the Common Stock
is established.
<PAGE>
         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 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 option grants made on the Effective
         Date,  the Fair Market Value shall be deemed to be equal to the initial
         public offering price per share at which the Common Stock is to be sold
         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
<PAGE>
                        (ii) such individual's  voluntary  resignation following
         (A) a  change  in  his or  her  position  with  the  Corporation  which
         materially reduces his or her level of responsibility,  (B) a reduction
         in his or her level of  compensation  (including  base  salary,  fringe
         benefits  and  participation  in  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.

         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,  Automatic  Option Grant or Salary  Investment
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 the purposes of the Automatic  Option
Grant  Program,  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 1995 Stock  Option/Stock  Issuance
Plan, as set forth in this document.
<PAGE>
         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,  Salary Investment 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.  Predecessor Plan shall mean the  Corporation's  existing 1993 Stock
Option Plan.

         AA.  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,  Salary  Investment Option Grant and Stock Issuance
Programs with respect to Section 16 Insiders.

         AB.  Salary  Investment  Option  Grant  Program  shall  mean the salary
investment option grant program in effect under the Plan.

         AC. Secondary Committee shall mean a committee of two (2) or more Board
members  appointed by the Board to administer  the  Discretionary  Option Grant,
Salary  Investment  Option  Grant and Stock  Issuance  Programs  with respect to
eligible persons other than Section 16 Insiders.

         AD.  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.

         AE. Section 12(g)  Registration Date shall mean the first date on which
the Common Stock is registered under Section 12(g) of the 1934 Act.

         AF. 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  or  independent
advisor,  except to the extent otherwise  specifically provided in the documents
evidencing the option grant or stock issuance.

         AG. Stock Exchange shall mean either the American Stock Exchange or the
New York Stock Exchange.

         AH. 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.

         AI. Stock  Issuance  Program shall mean the stock  issuance  program in
effect under the Plan.

         AJ. 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.

         AK. 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
<PAGE>
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.

         AL. 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 such holder's  options
or the vesting of his or her shares.

         AM. 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).

         AN.  Underwriting  Agreement  shall  mean  the  agreement  between  the
Corporation  and the  underwriter  or  underwriters  managing the initial public
offering of the Common Stock.



                                  EXHIBIT 99.3

                         Form of Stock Option Agreement
                              (Installment Option)



<PAGE>
                                    EXHIBIT A

                                  EXOGEN, INC.
                             STOCK OPTION AGREEMENT


                                                                     INSTALLMENT
RECITALS                                                                  OPTION

         A. The Board has  adopted  the Plan for the  purpose of  retaining  the
services of selected Employees,  non-employee  members of the Board or 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 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  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:
<PAGE>
                                  (i) Should Optionee cease to remain in Service
         for any reason  (other than death or Permanent  Disability)  while this
         option is  outstanding,  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.

                                  (ii) Should  Optionee die while this option is
         outstanding,  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.  Such right
         shall lapse and this  option  shall  cease to be  outstanding  upon the
         earlier of (A) the expiration of the twelve (12)- month period measured
         from the date of Optionee's death or (B) the Expiration Date.

                                  (iii) Should  Optionee cease Service by reason
         of Permanent Disability while this option is outstanding, 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.

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

                                  (v) During the limited  post-Service  exercise
         period, this option may not be exercised in the aggregate for more than
         the number of vested 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 vested
         Option  Shares  for which the  option  has not been  exercised.  To the
         extent  Optionee  is not  vested  in the  Option  Shares at the time of
         Optionee's   cessation  of  Service,   this  option  shall  immediately
         terminate and cease to be outstanding with respect to those shares.

                                  (vi)   In   the   event   of  an   Involuntary
         Termination following a Corporate Transaction or Change in Control, the
         provisions of Paragraph 6 shall govern the period for which this option
         is to remain exercisable  following Optionee's cessation of Service and
         shall supersede any provisions to the contrary in Paragraph 5.

                  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 the 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, however, shall occur if and to the extent: (i) this
option is, in connection with the Corporate Transaction, either to be assumed by
the  successor  corporation  (or  parent  thereof)  or to  be  replaced  with  a
comparable  option to  purchase  shares of the  capital  stock of the  successor
corporation  (or parent  thereof) or (ii) this  option is to be replaced  with a
<PAGE>
cash incentive  program of the successor  corporation which preserves the spread
existing on the Option  Shares for which this option is not  exercisable  at the
time of the Corporate  Transaction (the excess of the Fair Market Value of those
Option  Shares over the  aggregate  Exercise  Price payable for such shares) and
provides for subsequent pay-out in accordance with the same exercise schedule in
effect for the option pursuant to the option exercise  schedule set forth in the
Grant Notice. The determination of option  comparability  under clause (i) shall
be made by the Plan  Administrator,  and  such  determination  shall  be  final,
binding and conclusive.

                           (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) Should there occur an Involuntary  Termination of
Optionee's Service within eighteen (18) months following a Corporate Transaction
in which this option is assumed or  replaced,  then this  option,  to the extent
outstanding  at such time but not  otherwise  exercisable,  shall  automatically
accelerate so that this option shall immediately  become exercisable for all 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.  The option 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 effective date of such  Involuntary
Termination.

                           (e) Upon an  Involuntary  Termination  of  Optionee's
Service within eighteen (18) months following a Change in Control,  this option,
to the extent  outstanding  at such time but not  otherwise  fully  exercisable,
shall  automatically  accelerate  so that this option shall  immediately  become
exercisable for all 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.  The
option 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 effective
date of the Involuntary Termination.

                           (f) 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.
<PAGE>
                  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.

                  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 written
         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 transaction.

                           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.

                                  (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.
<PAGE>
                           (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.

                  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 promissory note.
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.(1)

                  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.

- --------
(1)  Authorization  of payment of the Exercise Price by a promissory  note under
such provisions may, under currently  proposed Treasury  Regulations,  result in
the loss of incentive stock option treatment under the Federal tax laws.
<PAGE>
                  15.  Governing  Law.  The   interpretation,   performance  and
enforcement of this Agreement  shall be governed by the laws of the State of New
Jersey 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 such 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:

                                  (i) 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.

                                  (ii) 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 any earlier
         installments  of the Common  Stock and any 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
         ($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.

                                  (iii) Should the exercisability of this option
         be accelerated upon a Corporate Transaction or Involuntary Termination,
         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 or Involuntary  Termination 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  or  Involuntary  Termination,  the  option  may
         nevertheless  be exercised  for the excess shares in such calendar year
         as a Non-Statutory Option.
<PAGE>
                                  (iv) 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.
<PAGE>
                                    EXHIBIT I

                               NOTICE OF EXERCISE


                  I hereby notify Exogen,  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 1995 Stock Option/Stock Issuance 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>
                                    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. 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 which
         the Board does not recommend such stockholders to accept, 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

               (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 Exogen, Inc., a Delaware corporation.

         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 option  shall have
been exercised in accordance with Paragraph 9 of the Agreement.
<PAGE>
         J. Exercise  Price shall mean the exercise price per share as specified
in the Grant Notice.

         K.  Expiration  Date shall mean the date on which the option expires as
specified in the Grant Notice.

         L. 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
         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.

         M. Grant  Date shall mean the date of grant of the option as  specified
in the Grant Notice.

         N.  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.

         O.  Incentive   Option  shall  mean  an  option  which   satisfies  the
requirements of Code Section 422.

         P.  Involuntary  Termination  shall mean the  termination of Optionee's
Service which occurs by reason of:

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

               (ii) 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  level  of
         responsibility,  (b) a reduction in  Optionee's  level of  compensation
         (including   base  salary,   fringe  benefits  and   participation   in
         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.

         Q.  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
<PAGE>
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).

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

         S.  Non-Statutory  Option  shall mean an option not intended to satisfy
the requirements of Code Section 422.

         T.  Notice of  Exercise  shall mean the notice of  exercise in the form
attached hereto as Exhibit I.

         U.  Option  Shares  shall  mean the  number of  shares of Common  Stock
subject to the option as specified in the Grant Notice.

         V.  Optionee  shall  mean the  person to whom the  option is granted as
specified in the Grant Notice.

         W. 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.

         X. 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.

         Y. Plan shall mean the Corporation's 1995 Stock  Option/Stock  Issuance
Plan.

         Z. Plan  Administrator  shall mean either the Board or a  committee  of
Board members,  to the extent the committee is at the time  responsible  for the
administration of the Plan.

         AA.  Service  shall mean  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.

         AB. Stock  Exchange  shall mean the American  Stock Exchange or the New
York Stock Exchange.

         AC. 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.

 



                                  EXHIBIT 99.4

                   Form of Addendum to Stock Option Agreement
                       (Limited Stock Appreciation Right)




<PAGE>
                                    ADDENDUM
                                       TO
                             STOCK OPTION AGREEMENT

                                                             SECTION 16 INSIDERS
                  The following provisions are hereby incorporated into, and are
hereby made a part of, that certain Stock Option Agreement dated _______________
(the "Option  Agreement") by and between Exogen,  Inc. (the  "Corporation")  and
_________________________________________________  ("Optionee")  evidencing  the
stock  option  granted  on  such  date  to  Optionee  under  the  terms  of  the
Corporation's 1995 Stock  Option/Stock  Issuance Plan, and such provisions shall
be effective immediately.  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 in tandem with the option, exercisable upon the terms set forth below:

                         (i)  Optionee  shall  have  the  unconditional   right,
         exercisable at any time during the thirty (30)-day  period  immediately
         following  a  Hostile   TakeOver,   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) days following such delivery date, and
         neither the approval of the Plan  Administrator  nor the consent of the
         Board shall be required in  connection  with such 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
         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 new 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
<PAGE>
         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.
<PAGE>




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


                                        EXOGEN, INC.

                                        By:    _________________________________

                                        Title: _________________________________


                                        ________________________________________
                                        ______________________________, OPTIONEE



EFFECTIVE DATE: ______________ , 199_




                                  EXHIBIT 99.8

                    Form of Automatic Stock Option Agreement




<PAGE>
                                    EXHIBIT A

                                  EXOGEN, INC.
                        AUTOMATIC STOCK OPTION AGREEMENT

                                                           NON-EMPLOYEE DIRECTOR

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 a member 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 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 shall be exercisable only 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 this
option  immediately  prior to such  assignment  and  shall be set  forth in such
documents issued to the assignee as the Board may deem  appropriate.  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.

                  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 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.
<PAGE>
                           (b) Optionee  shall,  in accordance  with the Vesting
Schedule,  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  holding this
option,  then the period for  exercising  this option  shall be reduced to a six
(6)-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 Optionee  ceases service as a Board
member.  Upon the earlier of (i) the expiration of such six (6)-month  period or
(ii) the 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 six  (6)-month
period  following  his or her  cessation  of Board  service,  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 Expiration Date.

                           (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
Optionee (or the personal  representative  of Optionee's estate or the person or
persons to whom the option is transferred upon Optionee's  death) shall have the
right  to  exercise  this  option  for  any or all of  those  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
death or Permanent Disability or (ii) the Expiration Date.

                           (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.
<PAGE>
                  6. Corporate Transaction.

                           (a) All Option  Shares  subject to this option at the
time of a Corporate  Transaction  but not otherwise  vested shall  automatically
vest so that this option shall,  immediately prior to the effective date of such
Corporate Transaction,  become fully exercisable for all of the Option Shares as
fully-vested shares of Common Stock and may be exercised for any or all of those
Option  Shares.  Immediately  following the Corporate  Transaction,  this option
shall terminate and cease to be exercisable  except to the extent assumed by the
successor  corporation  (or parent  thereof) in connection  with such  Corporate
Transaction.

                           (b) 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  fully  exercisable  for  all of  those  Option  Shares  as
fully-vested  shares of Common Stock and may be exercised for all or any portion
of  those  Option  Shares.   This  option  shall  remain  exercisable  for  such
fully-vested  Option  Shares until the  earliest to occur of (i) the  Expiration
Date, (ii) the sooner  termination of this option in accordance with Paragraph 5
or 6 or (iii) the surrender of the option in connection with a Hostile TakeOver.

                           (b)  Optionee  shall  have  an  unconditional   right
(exercisable  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.

                           (c) 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)
days following such delivery date, and no approval or consent of the Board shall
be required in connection with such option surrender and cash distribution. Upon
receipt of such cash  distribution,  this option shall be cancelled with respect
to the Option  Shares  subject  to the  surrendered  option (or the  surrendered
portion),  and Optionee  shall cease to have any further  right to acquire those
<PAGE>
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 of this  Agreement,  and the  Corporation  shall issue a new 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,  provided,  however, that the aggregate Exercise Price shall
remain the same.

                  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.

                  10. Manner of Exercising Option.

                           (a) In order to  exercise  this option for 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 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
         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  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.
<PAGE>
                                  (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 for the satisfaction of all Federal, state and local income
         tax withholding requirements applicable to the option exercise.

                           (b)  Except  to the  extent  the sale and  remittance
procedure  specified above 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 or certificates for the purchased
Option  Shares.  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  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. In addition,  nothing in this Agreement shall in any way be construed or
interpreted  so as to affect  adversely  or  otherwise  impair  the right of the
Corporation or the shareholders 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.
<PAGE>
                  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 New
Jersey without resort to that State's conflict-of-laws rules.
<PAGE>
                                    EXHIBIT I

                               NOTICE OF EXERCISE


                  I hereby notify Exogen,  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 1995 Stock Option/Stock Issuance 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>                                               
                                    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  which the Board
         does not recommend such stockholders to accept, 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

               (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 Exogen, 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.
<PAGE>
         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
         serving 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 Non-Employee Director
Automatic Stock Option  accompanying  the Agreement,  pursuant to which Optionee
has been informed of the basic terms of the option evidenced hereby.

         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. 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.
<PAGE>
         T. Permanent Disability shall mean the inability of Optionee to perform
his  or  her  usual  duties  as a  Board  member  by  reason  of  any  medically
determinable  physical or mental impairment which is expected to result in death
or has lasted or to be of continuous duration of twelve (12) months or more.

         U. Plan shall mean the Corporation's 1995 Stock  Option/Stock  Issuance
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 the purchased Option Shares
while subject to such repurchase right.

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

         X. Take-Over  Price per share of Common Stock 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  schedule  set forth in the Grant
Notice  pursuant  to  which  the  Option  Shares  are to  vest  in a  series  of
installments over the Optionee's period of Service.




                                  EXHIBIT 99.9

                          Employee Stock Purchase Plan
                        (As amended on November 14, 1997)



<PAGE>
                                  EXOGEN, INC.
                          EMPLOYEE STOCK PURCHASE PLAN

                     (As Amended through November 14, 1997)


       I.         PURPOSE OF THE PLAN

                  This Employee  Stock  Purchase Plan is intended to promote the
interests of Exogen,  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  350,000  shares.
Such authorized  share reserve reflects the 1-for-2 reverse stock split effected
prior to the  Effective  Date and  includes (i) the  original  share  reserve of
150,000  shares  established  for the Plan and (ii) the  200,000-share  increase
adopted  by  the  Board  on  November  14,  1997,  subject  to  approval  by the
Corporation's stockholders at the 1998 Annual Meeting.

                  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.

                  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.  However,  the initial  offering  period  shall  commence at the
Effective  Time and  terminate on the last  business day in July 1997.  The next
offering  period shall  commence on the first  business day in August 1997,  and
subsequent   offering   periods  shall   commence  as  designated  by  the  Plan
Administrator.
<PAGE>
                  C. Each offering  period shall be comprised of a series of one
or more successive  Purchase Periods.  Purchase Periods shall begin on the first
business day in February and August each year and terminate on the last business
day in July and January respectively each year.

       V.         ELIGIBILITY

                  A. Each  individual  who is an Eligible  Employee on the start
date of the initial  offering  period  shall be eligible to enter that  offering
period or any subsequent offering period under the Plan on the start date of any
Purchase Period within the applicable offering period on which he or she remains
an Eligible Employee.

                  B. Each  individual  who first  becomes an  Eligible  Employee
after the start date of the initial  offering  period shall be eligible to enter
that offering  period or any  subsequent  offering  period under the Plan on the
start date of any Purchase Period within the applicable offering period on which
he or she is an Eligible Employee with at least three (3) months of service with
the Corporation or any Corporate Affiliate.

                  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  form) and file such forms with the Plan  Administrator
(or its designate) on or before his or her scheduled Entry Date.

      VI.         PAYROLL DEDUCTIONS

                  A. The payroll  deduction  authorized by the  Participant  for
purposes of acquiring  shares of Common Stock under the Plan may be any multiple
of one percent (1%) of the Cash Compensation paid to the Participant during each
Purchase  Period  within that  offering  period,  up to a maximum of ten percent
(10%).  The  deduction  rate so  authorized  shall  continue  in effect  for the
remainder of 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 Period.

                                  (ii)  The   Participant   may,  prior  to  the
         commencement  of any new Purchase  Period  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 as of
         the start  date of the  Purchase  Period  following  the filing of such
         form.

                  B.  Payroll  deductions  shall  begin  on the  first  pay  day
following  the  Participant's  Entry  Date into the  offering  period  and shall
(unless  sooner  terminated  by the  Participant)  continue  through the pay day
<PAGE>
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 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.

      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 any  Participant  whose
payroll  deductions  have  previously  been  refunded  in  accordance  with  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 Period 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.  However,  for each Participant
whose Entry Date is other than the start date of the offering period, the clause
(i)  amount  shall in no event be less than the Fair  Market  Value per share of
Common Stock on the start date of that offering period.
<PAGE>
                  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  Period 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 2,500 shares,  subject to periodic  adjustments in the event of
certain changes in the Corporation's capitalization.

                  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 by the Participant 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  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
         Period 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  (other than death or  disability)
         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  Period  in which the  purchase  right so
         terminates shall be immediately refunded.  Should the Participant cease
         to remain an Eligible  Employee by reason of death or disability  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  Period in which such death or  disability
         occurs shall, at the election of the  Participant  (or, in the event of
         the   Participant's   death,   the  personal   representative   of  the
         Participant's estate), be immediately refunded or held for the purchase
         of shares on the next Purchase  Date. If no such election is made prior
         to the next Purchase Date, then the payroll  deductions  collected with
         respect to the terminated right shall be refunded as soon as possible.
<PAGE>
                                  (iv) Should the Participant cease to remain in
         active service by reason of an approved  unpaid leave of absence,  then
         no further payroll  deductions shall be collected on the  Participant's
         behalf during such leave, and the Participant  shall have the election,
         exercisable  up until the last  business day of the Purchase  Period in
         which such leave commences,  to (a) withdraw all the payroll deductions
         collected on the  Participant's  behalf to date in that Purchase Period
         or (b) have such  funds held for the  purchase  of shares at the end of
         such Purchase Period.  Upon the Participant's  return to active service
         following the approved leave,  his or her payroll  deductions under the
         Plan shall  automatically  resume at the rate in effect at the time the
         leave  began,  provided  such  return to  service  occurs  prior to the
         expiration date of the offering period in which such leave began.

                  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  Period  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 share  limitations per Participant  shall
continue to apply to any such  purchase,  and the clause (i) amount  above shall
not, for any Participant  whose Entry Date for the offering period is other than
the start date of that offering  period,  be less than the Fair Market Value per
share of Common Stock on such start date.

                  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.  During  the  Participant's  lifetime,  the
purchase right shall be  exercisable  only by the  Participant  and shall not be
assignable  or  transferable  by the  Participant  other  by will or the laws of
descent and distribution following the Participant's death.

                  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.
<PAGE>
     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 of such stock 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,  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 of such stock
         on the date or dates of grant) for each  calendar year such rights were
         at any time outstanding.

                  C. Should any purchase right of a Participant not accrue for a
particular  Purchase  Period  by reason of such  accrual  limitations,  then the
payroll  deductions  which the Participant made during that Purchase Period 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 May 5, 1995 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 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.
<PAGE>
                  B.  Unless  sooner  terminated  by the  Board,  the Plan shall
terminate upon the earliest of (i) the last business day in July 2005,  (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 its
termination.

        X.        AMENDMENT OF THE PLAN

                  The Board may alter, amend, suspend or discontinue the Plan at
any time to become  effective  immediately  following  the close of any Purchase
Period.  However,  the Board may not, without the approval of the  Corporation's
stockholders,  (i)  materially  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)  materially  increase the
benefits  accruing  to  Participants  under the Plan or  materially  modify  the
requirements for eligibility to participate in the Plan.

         XI.      GENERAL PROVISIONS

                  A. All costs and expenses  incurred in the  administration  of
the Plan shall be paid by the Corporation.

                  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 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 New Jersey without resort to that State's conflict-of-laws rules.
<PAGE>
                                    APPENDIX


                  The following definitions shall be in effect under the Plan:

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

                  B. Cash  Compensation  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 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, plus (iii) all of the
following  amounts  to the  extent  paid in cash:  overtime  payments,  bonuses,
commissions,  profit-sharing  distributions and other  incentive-type  payments.
However,  Eligible Earnings shall not include any 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  to  any  deferred
compensation plan or welfare benefit program now or hereafter established.

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

                  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 engaged,  on
a  regularly-scheduled  basis of more than  twenty  (20) hours per week for more
than five (5) months per calendar year, in the rendition of personal services to
any Participating Corporation as an employee for earnings considered wages under
Code Section 3401(a).
 
                  J. Entry Date shall mean the date an Eligible  Employee  first
<PAGE>
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.

                  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 as of the Effective  Time are listed in
attached Schedule A.

                  O. Plan shall mean the  Corporation's  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 Period. The initial Purchase Date shall be January 31, 1996.

                  R. Purchase  Period 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.  Stock  Exchange  shall  mean  either  the  American  Stock
Exchange or the New York Stock Exchange.

                  T. Underwriting Agreement shall mean the agreement between the
Corporation  and the  underwriter  or  underwriters  managing the initial public
offering of the Common Stock.


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