EXOGEN INC
DEF 14A, 1998-01-08
ELECTROMEDICAL & ELECTROTHERAPEUTIC APPARATUS
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                            SCHEDULE 14A INFORMATION
                                 (Rule 14a-101)

                Proxy Statement Pursuant to Section 14(a) of the
                   Securities Exchange Act of 1934, as amended.

Filed by Registrant        [ X ]

Filed by a Party other than the Registrant  [   ]

Check the appropriate box:

[   ]  Preliminary Proxy Statement

[ X ]  Definitive Proxy Statement

[   ]  Definitive Additional Materials

[   ]  Soliciting Material Pursuant to Rule 14a-11(c) or Rule 14a-12

                                  Exogen, Inc.
- - --------------------------------------------------------------------------------
                (Name of Registrant as Specified in Its Charter)

                           
- - --------------------------------------------------------------------------------
                   (Name of Person(s) Filing Proxy Statement)

Payment of Filing Fee (Check the appropriate box):

[X] No fee required.
     
[ ] Fee computed on table below per Exchange Act Rules 14a-6(i) and 0-11.

     (1) Title of each class of securities to which transaction applies:
        
     (2) Aggregate number of securities to which transaction applies:
        
     (3) Per unit  price  or other  underlying  value  of  transaction  computed
         pursuant to  Exchange  Act Rule 0-11 (set forth the amount on which the
         filing fee is calculated and state how it was determined):

     (4) Proposed maximum aggregate value of transaction:

     (5) Total fee paid:

[ ] Fee paid previously with preliminary materials.
 
[ ] Check box  if any  part of the fee is offset as  provided  by  Exchange  Act
    Rule  0-11(a)(2)  and identify the filing for which the  offsetting  fee was
    paid  previously.  Identify the previous  filing by  registration  statement
    number, or the form or schedule and the date of its filing.

     (1) Amount Previously Paid: __________________________.

     (2) Form, Schedule or Registration Statement No.: ___________________.

     (3) Filing Party: ___________________________________.

     (4) Date Filed: ___________________________________.
<PAGE> 
                                  EXOGEN, INC.

                             10 Constitution Avenue
                          Piscataway, New Jersey 08855


                    NOTICE OF ANNUAL MEETING OF STOCKHOLDERS

                                February 25, 1998


         The annual meeting of  stockholders  (the "Annual  Meeting") of Exogen,
Inc.  (the  "Company")  will be held at The Holiday Inn  Somerset,  195 Davidson
Avenue, Somerset, New Jersey 08873, telephone number (732) 356- 1700 on February
25, 1998 at 9:00 a.m. (eastern standard time) for the following purposes:

         (1)      To elect  seven  Directors  to  serve  until  the next  Annual
                  Meeting or until their  respective  successors shall have been
                  duly elected and qualified;

         (2)      To  approve  an  amendment  to  the  1995  Stock  Option/Stock
                  Issuance  Plan,  which  includes  an increase in the number of
                  shares of common stock available for issuance  thereunder from
                  750,000 to 1,350,000 shares;

         (3)      To approve an amendment to the Employee Stock Purchase Plan to
                  increase  the number of shares of common stock  available  for
                  issuance thereunder from 150,000 to 350,000 shares;

         (4)      To ratify the selection of Arthur  Andersen  LLP,  independent
                  public accountants,  as auditors of the Company for the fiscal
                  year ending September 30, 1998; and

         (5)      To transact  such other  business as may properly  come before
                  the Annual Meeting.

         Only  stockholders  of record at the close of business on December  31,
1997 will be entitled to notice of, and to vote at, the Annual  Meeting.  A list
of  stockholders  eligible to vote at the Annual  Meeting will be available  for
inspection  at the  Annual  Meeting  and for a period  of ten days  prior to the
Annual Meeting during regular  business hours at the corporate  headquarters  at
the address above.
<PAGE>

         Whether or not you expect to attend the Annual Meeting, your proxy vote
is important. To assure your representation at the meeting, please sign and date
the enclosed proxy card and return it promptly in the enclosed  envelope,  which
requires no additional postage if mailed in the United States or Canada.

                                           By Order of the Board of Directors


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

Piscataway, New Jersey
January 8, 1998
 
- - --------------------------------------------------------------------------------


                  IT IS IMPORTANT THAT THE ENCLOSED PROXY CARD
                       BE COMPLETED AND RETURNED PROMPTLY

- - --------------------------------------------------------------------------------
<PAGE>



                                  EXOGEN, INC.

                       PROXY STATEMENT FOR ANNUAL MEETING
                                 OF STOCKHOLDERS

                                 January 8, 1998

         This Proxy  Statement is furnished to stockholders of record of Exogen,
Inc. (the "Company") as of December 31, 1997 in connection with the solicitation
of proxies by the Board of Directors of the Company (the "Board of Directors" or
"Board") for use at the Annual  Meeting of  Stockholders  to be held on February
25, 1998 (the "Annual Meeting").

         Shares  cannot  be voted at the  Annual  Meeting  unless  the  owner is
present in person or by proxy.  All properly  executed and unrevoked  proxies in
the  accompanying  form that are received in time for the Annual Meeting will be
voted at the  Annual  Meeting or any  adjournment  thereof  in  accordance  with
instructions  thereon, or if no instructions are given, will be voted, "FOR" the
election of the named  nominees as Directors of the Company,  "FOR" the approval
of the  amendment  to the 1995  Stock  Option/Stock  Insurance  Plan,  "FOR" the
approval  of the  amendment  to the  Employee  Stock  Purchase  Plan,  "FOR" the
ratification of Arthur Andersen LLP, Independent Public Accountants, as auditors
of the Company  and will be voted in  accordance  with the best  judgment of the
persons  appointed as proxies with respect to other matters which  properly come
before the Annual  Meeting.  Any person  giving a proxy may revoke it by written
notice to the Company at any time prior to exercise of the proxy.  In  addition,
although  mere  attendance  at the Annual  Meeting will not revoke the proxy,  a
stockholder  who attends the meeting may  withdraw  his or her proxy and vote in
person.  Abstentions  and broker  non-votes  will be  counted  for  purposes  of
determining  the presence or absence of a quorum for the transaction of business
at the Annual Meeting.  Abstentions  will be counted in tabulations of the votes
cast on each of the proposals  presented at the Annual  Meeting,  whereas broker
non-votes will not be counted for purposes of determining whether a proposal has
been approved.

         The Annual  Report of the  Company  (which  does not form a part of the
proxy  solicitation  materials) is being  distributed  concurrently  herewith to
stockholders.

         The mailing address of the principal  executive  offices of the Company
is 10 Constitution  Avenue,  P.O. Box 6860,  Piscataway,  New Jersey 08855. This
Proxy  Statement  and the  accompanying  form of proxy are  being  mailed to the
stockholders of the Company on or about January 8, 1998.

                                VOTING SECURITIES

         The Company has only one class of voting securities,  its common stock,
par value $0.0001 per share (the "Common  Stock").  At the Annual Meeting,  each
stockholder  of record at the close of  business  on  December  31, 1997 will be
entitled  to one vote for each  share of Common  Stock  owned on that date as to
each matter  presented at the Annual Meeting.  On December 31, 1997,  11,802,159
shares of Common Stock were outstanding. A list of stockholders eligible to vote
at the Annual Meeting will be available for inspection at the Annual Meeting and
for a period of ten days prior to the Annual  Meeting  during  regular  business
hours at the principal executive offices of the Company at the address specified
above.
<PAGE>
                                   PROPOSAL 1:

                              ELECTION OF DIRECTORS


         Unless otherwise  directed,  the persons  appointed in the accompanying
form of proxy intend to vote at the Annual Meeting for the election of the seven
nominees  named below as Directors of the Company to serve until the next Annual
Meeting or until their successors are duly elected and qualified. If any nominee
is  unable  to  be a  candidate  when  the  election  takes  place,  the  shares
represented  by valid proxies will be voted in favor of the remaining  nominees.
The Board of Directors  does not currently  anticipate  that any nominee will be
unable to be a candidate for election.

         The Board of Directors  currently  has seven  members,  all of whom are
nominees for election.  Each director  shall serve until the next Annual Meeting
or until their respective successors shall have been duly elected and qualified.
John P. Ryaby, Patrick A. McBrayer,  Buzz Benson, Donald J. Lothrop,  Terence D.
Wall and David J.  Ottensmeyer,  M.D.  were elected to the Board of Directors by
the  stockholders at the 1997 Annual  Meeting.  Peter C. Madeja was appointed by
the Board of Directors to fill a vacancy on the Board in February 1997.

         The affirmative vote of a plurality of the Company's outstanding Common
Stock  represented  and voting at the Annual  Meeting is  required  to elect the
Directors.

Information Regarding Nominees for Election as Directors

         The Board of  Directors  currently  has seven  members.  The  following
information  with  respect to the  principal  occupation  or  employment,  other
affiliations  and business  experience of each of the seven nominees  during the
last five years has been  furnished  to the Company by such  nominee.  Except as
indicated,  each of the seven  nominees for election has had the same  principal
occupation for the last five years.

         John P. Ryaby, 63, a founder of the Company, has been a Director of the
Company since March 1992 and Chairman of the Board of Directors  since  February
1994. Mr. Ryaby served as Chief  Executive  Officer and President of the Company
from March 1992 to February 1994 and currently  serves as the Vice  President of
Research and  Development  and  Regulatory  Affairs.  Mr. Ryaby served from 1989
until  1992  as  the  President  and  Chief   Operating   Officer  of  Interpore
Orthopaedics, Inc. ("Interpore"), a division of Interpore International, Inc., a
physical and biological  research company.  Mr. Ryaby was a founder of, and from
1975 to 1982, was President and Chief Operating Officer of Electro-Biology, Inc.
("EBI"),  a company involved in bone growth electrical  stimulation  technology,
and was  responsible  for  obtaining  regulatory  approval  of EBI's  pre-market
approval ("PMA") in 1979 and for establishing EBI's direct sales force.

         Patrick A. McBrayer,  46, was named Chief Executive Officer,  President
and a Director of the Company in February  1994.  Prior to joining the  Company,
Mr. McBrayer served in various executive positions from 1987 to February 1994 at
Osteotech,  Inc.,  including  President and Chief  Executive  Officer.  While at
Osteotech,  Inc., a company that develops and markets biologic,  biomaterial and
implant systems for musculoskeletal  surgery,  Mr. McBrayer guided the company's
transition  from its  inception to a public  entity.  From 1979 through 1986, he
served in a variety of positions  of  increasing  responsibility  with Johnson &
Johnson,  Inc., including Marketing Manager of the Patient Care Division,  where
he built a significant business in surgical products.
<PAGE>
         Buzz Benson, 43, has been a Director of the Company since January 1995.
Mr.  Benson  has been the  President  and  Managing  Director  of Piper  Jaffray
Ventures, a venture capital fund, since November 1992. Piper Jaffray Ventures is
the  investment  manager  and sole  private  limited  partner  of Piper  Jaffray
Healthcare Capital Limited  Partnership  (SBIC). From 1986 to November 1992, Mr.
Benson was a Managing  Director in the  corporate  finance  department  of Piper
Jaffray Inc. Mr. Benson  serves on the Board of Directors of Unologix,  Inc. and
several privately-held medical companies.

         Donald J.  Lothrop,  38, has been a Director of the Company since March
1993. Mr. Lothrop has been a General Partner of Delphi  Management  Partners II,
L.P.  since July 1994,  a General  Partner of Delphi  Management  Partners  III,
L.L.C. since March 1995 and a General Partner of Delphi Management  Partners IV,
L.L.C.  since October 1997.  From January 1991 to June 1994,  Mr.  Lothrop was a
Partner of Marquette Venture Partners,  a venture capital firm, where he focused
on the health care area. From 1989 to 1990, he worked at Bain & Company, Inc., a
management consulting firm.

         Terence D. Wall,  56, has been a Director  of the  Company  since March
1993. Mr. Wall founded Vital Signs,  Inc., a medical products  company,  in 1972
and has been President,  Chief Executive  Officer and a Director of Vital Signs,
Inc.  since that time. Mr. Wall serves on the Board of Directors of Vital Signs,
Inc., EchoCath, Inc. and Bionix, Inc.

         David J.  Ottensmeyer,  M.D.,  67, has been a Director  of the  Company
since  October  1996.  From 1991 to December  1995,  Dr.  Ottensmeyer  served as
President  and Chief  Executive  Officer of The  Lovelace  Institutes,  a health
services  and  biomedical  research   organization.   From  1990  to  1991,  Dr.
Ottensmeyer  served as President of the  Travelers  Health  Companies  and Chief
Medical Officer of the Travelers  Companies - Managed Care and Employee Benefits
Operations.  Dr.  Ottensmeyer serves on the Board of Directors of Access Anytime
Bank Corporation.

         Peter C. Madeja,  39, has been a Director of the Company since February
1997.  Since October 1993, Mr. Madeja has been the President and Chief Executive
Officer of Genex Services,  Inc. ("Genex"),  a company that provides services to
insurance  companies,  third party  administrators and companies with respect to
integrated  disability  management and medical cost containment.  Mr. Madeja has
held various  positions at Genex since 1982.  Since March 1997,  Mr.  Madeja has
served as an Executive Vice President of Provident  Companies,  Inc., the parent
company of Genex and a  provider  of  disability  and life  insurance  and other
voluntary benefits.

Committees of the Board

         The Audit Committee  consists of Messrs.  McBrayer,  Benson and Lothrop
and its functions  include  recommending to the Board of Directors the selection
of the Company's  auditors and reviewing with such auditors the plan and results
of their audit and the adequacy of the Company's systems of internal  accounting
controls and management  information  systems. In addition,  the Audit Committee
reviews the independence of the auditors and their fees for services rendered to
the Company.

         The  Compensation  Committee  currently  consists of Mr. Madeja and Dr.
Ottensmeyer  and its functions  include  recommending,  reviewing and overseeing
salaries,  benefits and stock option plans relating to the Company's  employees,
consultants,  directors  and  other  individuals  compensated  by  the  Company.
<PAGE>
Pursuant to the  provisions of the Company's  1995 Stock  Option/Stock  Issuance
Plan (the "Option  Plan"),  the Committee  has complete  discretion to authorize
options and direct stock  issuances.  Until December 2, 1997,  the  Compensation
Committee consisted of Messrs. Lothrop and Wall.

Attendance at Board and Committee Meetings

         During fiscal 1997,  the Board of Directors  held nine  meetings.  Each
Director who served on the Board for the full fiscal year  attended all meetings
of the Board of Directors,  except for Mr. Lothrop who missed one meeting.  With
respect to those  Directors  appointed  to the Board after the  commencement  of
fiscal 1997,  Mr.  Madeja  attended  four of five  meetings and Dr.  Ottensmeyer
attended five of eight meetings held since becoming a Director. The Compensation
Committee  acted by unanimous  written  consent in lieu of a meeting seven times
during fiscal 1997. The Audit Committee held two meetings during fiscal 1997.

Compensation of Directors

         Cash  Compensation.  Directors do not receive a fee for attending Board
of Directors or committee meetings,  but are reimbursed for expenses incurred in
connection with performing their respective  duties as Directors of the Company.
Pursuant to a consulting  agreement with the Company,  Dr. Ottensmeyer  receives
payments of $10,000 per year for consulting services on issues relating to third
party reimbursement.

         Stock Option Grant.  Under the Company's Option Plan, each non-employee
Director first elected or appointed to the Board of Directors  after the initial
public offering of the Company's  Common Stock will  automatically be granted an
option for 7,500  shares of Common  Stock on the date of his or her  election or
appointment  to the  Board  of  Directors,  provided  such  individual  has  not
previously  been in the  employ of the  Company.  In  addition,  at each  annual
meeting of stockholders,  each individual with at least six months of service on
the Board of Directors  who will  continue to serve as a  non-employee  Director
following the meeting will  automatically  be granted an option for 1,250 shares
of Common Stock,  whether or not such individual has been in the prior employ of
the  Company  or  joined  the Board of  Directors  prior to the  initial  public
offering.  Each option  granted under the  automatic  grant program will have an
exercise price equal to 100% of the fair market value of the Common Stock on the
automatic  grant  date and a  maximum  term of ten  years,  subject  to  earlier
termination  upon the optionee's  cessation of Board of Director  service.  Each
automatic option will be immediately exercisable;  however, any shares purchased
upon exercise of the option will be subject to repurchase by the Company  should
the optionee's service as a non-employee  Director cease prior to vesting in the
shares.  The initial  7,500-share  option will vest in  successive  equal annual
installments  over the  optionee's  initial  four-year  period of service on the
Board of Directors; each annual option will vest upon completion of one (1) year
of Board service measured from the option grant date. However,  each outstanding
option  will  immediately  vest upon (i)  certain  changes in the  ownership  or
control of the Company or (ii) the death or  disability  of the  optionee  while
serving on the Board of Directors.  In accordance  with the Option Plan, each of
Messrs. Benson, Lothrop, Madeja and Wall and Dr. Ottensmeyer,  if elected to the
Board of Directors for the ensuing year,  will receive options to purchase 1,250
shares of Common  Stock at an exercise  price equal to the fair market  value of
the Company's Common Stock on the date of the Annual Meeting.
<PAGE>
                  EXECUTIVE OFFICERS AND INFORMATION REGARDING
                             EXECUTIVE COMPENSATION

                               Executive Officers

         The executive  officers of the Company as of December 31, 1997 were the
following:


      Name           Age               Position
      ----           ---               --------

Patrick A. McBrayer  46    Chief Executive Officer and President

John P. Ryaby        63    Vice President of Research and Development and
                           Regulatory Affairs

Richard H. Reisner   54    Vice President, Chief Financial Officer and Secretary

Roger J. Talish      55    Vice President of Operations


Information Concerning Executive Officers Who Are Not Directors

         Richard H.  Reisner,  a founder of the Company,  has served as its Vice
President and Chief  Financial  Officer since September 1992. From 1991 to 1992,
Mr. Reisner was Vice President and Chief Financial Officer of Cirrus Diagnostics
Inc.  ("Cirrus"),  a company  which  developed  a system for the  automation  of
diagnostic  immunoassay and chemistry testing. Mr. Reisner was directly involved
with the acquisition of Cirrus by Diagnostic  Products  Corporation in May 1992.
From 1990 to 1991, Mr. Reisner was the Corporate Controller for Datascope Corp.,
a  manufacturer  of medical  instruments.  From 1988 to 1990,  Mr.  Reisner  was
President  and  Chief  Executive  Officer  of Pain  Suppression  Labs,  Inc.,  a
manufacturer  of electrical  stimulation  devices to suppress  chronic  headache
pain.  From  1979 to  1988,  Mr.  Reisner  was Vice  President  of  Finance  and
Administration   of  EBI  and  was   responsible   for   obtaining   third-party
reimbursement for EBI's bone growth electrical stimulation devices.

         Roger J. Talish, a founder of the Company, has served as Vice President
of Operations  for the Company since March 1992.  From 1989 to 1992,  Mr. Talish
was Vice  President of Operations at Interpore and from 1985 to 1989 he held the
same  position at  Meditron,  Inc.  From 1978 to 1985,  Mr.  Talish held various
engineering  management  positions  at EBI,  including  Director of Research and
Product Engineering.
<PAGE>
                           SUMMARY COMPENSATION TABLE

         The following  table sets forth the annual and  long-term  compensation
earned for the three fiscal years ended September 30, 1997, 1996 and 1995 by the
Company's  Chief  Executive  Officer  ("CEO") who served in such capacity during
fiscal 1997,  the executive  officers of the Company,  other than the CEO, whose
total compensation  during fiscal 1997 exceeded $100,000 and who were serving as
such at the end of fiscal 1997 and one other officer who resigned  during fiscal
1997 (collectively, the "Named Executive Officers"):
<TABLE>
<CAPTION> 
                                                         Annual                Long-Term Compensation
                                                     Compensation(1)                   Awards
                                                 -----------------------     ---------------------------
                                                                             Restricted       Securities
                                  Fiscal                                        Stock         Underlying         All Other
Name and Principal Position        Year            Salary        Bonus        Awards(2)         Options        Compensation
- - ---------------------------        ----            ------        -----        ---------         -------        ------------
<S>                                <C>           <C>          <C>                <C>           <C>             <C>     
Patrick A. McBrayer...........     1997          $200,000           --           --                --                --
   Chief Executive Officer         1996           200,000           --           --                --                --
   and President                   1995           200,000           --           --                --                --

John P. Ryaby.................     1997           144,000           --           --                --                --
   Vice President of Research      1996           144,000     $10,000(3)         --                --                --
   and Development and             1995           135,000      10,000(3)         --                --                --
   Regulatory Affairs

Richard H. Reisner............     1997           130,000           --           --                --                --
   Vice President, Chief           1996           128,333           --           --                --                --
   Financial Officer and           1995           110,000           --           --                --                --
   Secretary

Roger J. Talish...............     1997           127,750           --           --                --                --
   Vice President of               1996           128,750       6,666(3)         --                --                --
   Operations                      1995           115,000       6,667(3)         --                --                --

John Bohan(4).................     1997            96,667        5,751           --                --          $65,000(5)
   Vice President of               1996           129,167       23,359           --                --                --
   Sales and Marketing             1995           120,000        9,659           --            25,000(6)             --
</TABLE>
- - ------------------
(1)   Other  compensation in the form of perquisites and other personal benefits
      has been omitted in those  instances  where the  aggregate  amount of such
      perquisites and other personal benefits  constituted the lesser of $50,000
      or 10% of the total annual salary and bonus for the executive  officer for
      such year.
(2)   No restricted stock grants were made to Messrs.  Ryaby,  Reisner or Talish
      during the fiscal years ended  September 30, 1995,  September 30, 1996 and
      September 30, 1997.  Messrs.  Ryaby,  Reisner and Talish each entered into
      Stock Restriction Agreements with the Company relating to 159,500, 129,412
      and 151,162 shares of Common Stock, respectively,  previously purchased by
      such  individuals.   Pursuant  to  the  terms  of  the  Stock  Restriction
      Agreements, 10% of the shares of each of Messrs. Ryaby, Reisner and Talish
      vested  immediately  on March 1, 1993,  and an additional  16% vested upon
      receipt of the PMA from the U.S. Food and Drug  Administration  on October
      5, 1994.  The  remaining  shares  vest in 37 equal  monthly  installments,
      measured from October 5, 1994. The Company has the right to repurchase, at
<PAGE>
      a purchase price of $0.0034 per share, any unvested shares held by each of
      Messrs.  Ryaby,  Reisner and Talish at the time of termination of service.
      However,  in the event service with the Company is terminated by reason of
      death or disability,  such repurchase right shall  immediately  terminate.
      All  restricted  shares  immediately  vest in the  event  the  Company  is
      acquired by merger or asset sale,  unless the Company's  repurchase rights
      are assigned to the acquiring  entity.  As of September 30, 1997,  Messrs.
      Ryaby, Reisner and Talish held 6,380, 5,185 and 6,055 shares of restricted
      Common Stock, respectively,  which shares had a fair market value equal to
      $29,486, $23,963 and $27,983,  respectively.  In addition,  Messrs. Ryaby,
      Reisner and Talish each entered into Stock  Purchase  Agreements  with the
      Company on August 2, 1993,  relating to 100,000,  50,000 and 50,000 shares
      of Common Stock, respectively, which shares are no longer restricted.
(3)   Represents  a portion  of the loan to each of  Messrs.  Ryaby  and  Talish
      forgiven by the Company on January 1, 1995 and January 1, 1996.
(4)   Mr. Bohan resigned from the Company in May 1997.
(5)   Represents  severance  payments  made  during  fiscal  1997 and the  first
      quarter of fiscal 1998. See "Severance Agreements."
(6)   In January  1995,  the  Company  granted  Mr.  Bohan an option to purchase
      25,000  shares of Common  Stock at an  exercise  price of $.60 per  share,
      vesting 20% per annum,  pursuant to the Company's  1993 Stock Option Plan.
      See "Severance Agreements."

                      OPTION/SAR GRANTS IN LAST FISCAL YEAR

      No  options  or  stock  appreciation  rights  were  granted  to any  Named
Executive Officer during the last fiscal year.

                 AGGREGATED OPTION EXERCISES IN LAST FISCAL YEAR
                        AND FISCAL YEAR-END OPTION VALUES

         With  respect  to the Named  Executive  Officers,  there  were no stock
option holdings as of September 30, 1997. The following table sets forth certain
information  regarding  the exercise of stock  options by such persons in fiscal
1997. No stock appreciation rights were exercised by any Named Executive Officer
during  fiscal  1997 and no stock  appreciation  rights were  outstanding  as of
September 30, 1997.


                                          Shares Acquired           Value
Name                                      On Exercise (#)        Realized ($)(1)
- - ----                                      ---------------        ---------------

Patrick A. McBrayer...................          --                   --

John P. Ryaby.........................          --                   --

Richard H. Reisner....................          --                   --

Roger J. Talish.......................          --                   --

John Bohan............................        10,000              $30,250
- - ------------------

(1)   The value realized is the excess of the fair market value of the shares on
      the date of option exercise over the exercise price paid for each share.
<PAGE>
Employment and Severance Agreements

         Patrick A.  McBrayer  and the  Company  are  parties  to an  employment
agreement,  dated as of March 1, 1997.  Pursuant to the terms of this agreement,
Mr. McBrayer receives annual minimum  compensation of $200,000,  which amount is
subject to annual review by the  Compensation  Committee  during the term of the
agreement.  The  agreement  also  provides  that Mr.  McBrayer  is  entitled  to
participate in an executive performance bonus program,  which is to be developed
by Mr. McBrayer and approved by the Board of Directors. Mr. McBrayer is entitled
to receive all employee benefits generally made available to executive officers,
as well as a  monthly  car  allowance  of  $600.  In the  event  Mr.  McBrayer's
employment  is  terminated  by the Company  without  good cause,  the Company is
required to provide  Mr.  McBrayer  with  severance  payments  equal to his base
compensation in effect at the time of such termination  until the earlier of one
year following the date of termination or March 1, 2000.

         John P. Ryaby entered into an arrangement  with the Company in May 1995
whereby if he is terminated by the Company  without good cause prior to November
13, 1999, he will be entitled to receive certain  benefits from the date of such
termination until November 13, 1999.

         John Bohan resigned from the Company  effective May 31, 1997.  Pursuant
to a letter  agreement  dated May 27,  1997,  Mr.  Bohan  received an  aggregate
severance  payment  consisting of six months base salary.  The letter  agreement
provides  that the Company  will not  exercise  certain  repurchase  rights with
respect to 25,000  shares  purchased by Mr. Bohan  pursuant to a Stock  Purchase
Agreement between the Company and Mr. Bohan,  dated February 5, 1994. In January
1995, Mr. Bohan was granted an option to purchase 25,000 shares of Common Stock,
10,000  shares of which vested as of May 31, 1997.  The option was  subsequently
exercised for the vested shares by Mr. Bohan.

Compensation Committee Interlocks and Insider Participation

         During fiscal 1997,  Messrs.  Lothrop and Wall served as members of the
Company's Compensation  Committee. On December 2, 1997, Messrs. Lothrop and Wall
resigned from the Compensation Committee and Mr. Madeja and Dr. Ottensmeyer were
appointed to the Compensation  Committee.  Messrs.  Lothrop and Wall resigned in
accordance with certain  federal  regulations  due to their  participation  in a
private  placement of Common Stock of the Company in October 1997.  See "Certain
Transactions" for a description of the private placement.


                      REPORT OF THE COMPENSATION COMMITTEE
                            OF THE BOARD OF DIRECTORS

         The Compensation  Committee of the Board of Directors advises the Chief
Executive  Officer  and the  Board of  Directors  on  matters  of the  Company's
compensation  philosophy and the  compensation  of executive  officers and other
individuals  compensated  by the Company.  The  Compensation  Committee  also is
responsible  for the  administration  of the  Company's  Option Plan under which
option grants and direct stock issuances may be made to executive officers.  The
Compensation  Committee has reviewed and is in accord with the compensation paid
to executive officers in fiscal 1997.

         General Compensation Policy. The fundamental policy of the Compensation
Committee  is to provide  the  Company's  executive  officers  with  competitive
compensation  opportunities based upon their contribution to the development and
financial  success of the  Company  and their  personal  performance.  It is the
Compensation Committee's objective to have a portion of each executive officer's
<PAGE>
compensation  contingent  upon the  Company's  performance  as well as upon such
executive  officer's own level of  performance.  Accordingly,  the  compensation
package for each executive officer is comprised of two elements: (i) base salary
which  reflects   individual   performance  and  is  designed  primarily  to  be
competitive  with salary levels in the industry and (ii)  long-term  stock-based
incentive  awards  which  strengthen  the  mutuality  of  interests  between the
executive officers and the Company's stockholders.

         Factors.  The  principal  factors  which  the  Compensation   Committee
considered  with respect to each executive  officer's  compensation  package for
fiscal 1997 are summarized below. The Compensation  Committee may,  however,  in
its discretion apply entirely  different factors in advising the Chief Executive
Officer and the Board of Directors  with respect to executive  compensation  for
future years.

                  o Base Salary.  The suggested  base salary for each  executive
officer  is  determined  on the  basis  of the  following  factors:  experience,
personal  performance,  the  salary  levels in effect for  comparable  positions
within  and  without  the  industry  and  internal  base  salary   comparability
considerations.  The  weight  given  to  each  of  these  factors  differs  from
individual to individual, as the Compensation Committee deems appropriate.

         While it is the general  policy of the  Compensation  Committee  not to
award  performance-based  cash  bonuses,  from  time to time,  the  Compensation
Committee  may  advocate  cash bonuses when such bonuses are deemed to be in the
best interest of the Company.

                  o Long-Term Incentive  Compensation.  Long-term incentives are
provided  through grants of restricted  stock and stock options.  The grants are
designed to align the  interests  of each  executive  officer  with those of the
stockholders  and to provide each  individual  with a  significant  incentive to
manage the Company from the  perspective of an owner with an equity stake in the
Company.  The restricted stock generally vests in monthly or annual installments
over a period of four years and any unvested shares held by an executive officer
at the time of his or her  termination  of service are subject to the  Company's
right of  repurchase.  Each option grant allows the individual to acquire shares
of the Company's Common Stock at a fixed price per share (generally,  the market
price on the grant date) over a specified period of time (up to ten years). Each
option generally  becomes  exercisable in installments  over a five-year period,
contingent upon the executive officer's  continued  employment with the Company.
Accordingly,  the restricted  stock or option grant will provide a return to the
executive  officer only if the executive officer remains employed by the Company
during the vesting  period,  and then only if the market price of the underlying
shares appreciates.

         The  number of shares  subject to each  option  grant is set at a level
intended to create a meaningful  opportunity  for stock  ownership  based on the
executive  officer's  current  position  with  the  Company,   the  base  salary
associated with that position, the size of comparable awards made to individuals
in similar  positions  within  the  industry,  the  individual's  potential  for
increased responsibility and promotion over the option term and the individual's
personal  performance  in  recent  periods.  The  Compensation   Committee  also
considers the number of unvested options held by the executive  officer in order
to  maintain  an  appropriate  level of equity  incentive  for that  individual.
However,  the Compensation  Committee does not adhere to any specific guidelines
as to the relative option holdings of the Company's  executive  officers.  There
were no stock options granted to executive officers in fiscal 1997.
<PAGE>
         Through the Company's  Employee Stock Purchase Plan, the Company offers
additional opportunities for equity ownership to executive officers.

         CEO  Compensation.  In advising the Board of Directors  with respect to
the  compensation   payable  to  the  Company's  Chief  Executive  Officer,  the
Compensation Committee seeks to achieve two objectives: (i) to establish a level
of base salary competitive with that paid by companies within the industry which
are of comparable  size to the Company and by companies  outside of the industry
with  which  the  Company  competes  for  executive  talent  and  (ii) to make a
significant  percentage of the total  compensation  package  contingent upon the
Company's performance and stock price appreciation.

         The suggested base salary  established for Mr. McBrayer on the basis of
the  foregoing  criteria  was  intended  to  provide  a level of  stability  and
certainty each year. Accordingly,  this element of compensation was not affected
to any significant degree by Company performance factors.

         In January 1994,  Mr.  McBrayer was issued 350,000 shares of restricted
Common Stock of the Company,  which restrictions fully lapsed in September 1997.
This  restricted  stock  made a  significant  portion  of Mr.  McBrayer's  total
compensation contingent on increased value for the Company's stockholders, since
the value of this  restricted  stock  depends  upon the  value of the  Company's
Common Stock.

         Compliance with Internal  Revenue Code Section  162(m).  As a result of
Section  162(m) of the  Internal  Revenue  Code of 1986,  as amended,  which was
enacted into law in 1993,  the Company will not be allowed a federal  income tax
deduction for compensation  paid to certain  executive  officers,  to the extent
that  compensation  exceeds  $1  million  per  officer  in any  one  year.  This
limitation will apply to all compensation paid to the covered executive officers
which is not considered to be performance based. Compensation which does qualify
as  performance-based  compensation  will not have to be taken into  account for
purposes of this limitation.  The Option Plan contains certain  provisions which
are intended to assure that any compensation  deemed paid in connection with the
exercise of stock options  granted under that plan with an exercise  price equal
to the  market  price of the  option  shares on the grant  date will  qualify as
performance-based compensation.

         The Compensation  Committee does not expect that the compensation to be
paid to the  Company's  executive  officers for the 1998 fiscal year will exceed
the $1 million  limit per  officer.  Because it is very  unlikely  that the cash
compensation  payable  to  any  of  the  Company's  executive  officers  in  the
foreseeable  future  will  approach  the  $1  million  limit,  the  Compensation
Committee  has  decided  at this time not to take any  other  action to limit or
restructure the elements of cash compensation payable to the Company's executive
officers.  The  Compensation  Committee will reconsider this decision should the
individual  compensation  of any executive  officer ever approach the $1 million
level.

                                                     THE COMPENSATION COMMITTEE

                                                     Donald J. Lothrop
                                                     Terence D. Wall
<PAGE>
                                PERFORMANCE GRAPH

         Set forth below is a graph  comparing the annual  percentage  change in
the Company's  cumulative total stockholder return on its Common Stock from July
20, 1995 (the date public trading of the Company's stock  commenced) to the last
day of the Company's last completed fiscal year (as measured by dividing (i) the
sum of (A) the  cumulative  amount  of  dividends  for the  measurement  period,
assuming dividend reinvestment,  and (B) the excess of the Company's share price
at the end over the price at the beginning of the  measurement  period,  by (ii)
the share price at the beginning of the measurement  period) with the cumulative
total return so  calculated of The Nasdaq Stock Market (US) Index and a group of
peer  issuers  in a line of  business  similar  to the  Company  during the same
period.





              COMPARISON OF 26-MONTH CUMULATIVE TOTAL RETURN*
             AMONG EXOGEN, INC, THE NASDAQ STOCK MARKET (U.S) INDEX
                                AND A PEER GROUP






                                                 
             [GRAPHIC-GRAPH PLOTTED TO POINTS LISTED IN CHART BELOW]


                                             Cumulative Total Return
                                        ----------------------------------
                                        7/20/95    9/95     9/96      9/97
                                        -------    ----     ----      ----

Exogen Inc.               EXGN            100       128      35        40
PEER GROUP                PPEER2          100       113     129       191
NASDAQ STOCK MARKET-US    INAS            100       109     129       177

                   $100 INVESTED ON 7/20/95 IN STOCK OR INDEX
                      INCLUDING REINVESTMENT OF DIVIDENDS.
                        FISCAL YEAR ENDING SEPTEMBER 30.
  
 

         The Peer Group consists of Biomet,  Inc., Orthofix  International N.V.,
Orthologic Corp.,  Sofamor/Danek Group, Inc.,  Spine-Tech,  Inc., Stryker Corp.,
and Osteotech Inc.

         Notwithstanding  anything  to  the  contrary  set  forth  in any of the
Company's previous filings under the Securities Act of 1933, as amended,  or the
Securities  Exchange Act of 1934,  as amended,  which might  incorporate  future
filings made by the Company under those  statutes,  the  preceding  Compensation
Committee  Report on Executive  Compensation  and the Company Stock  Performance
Graph will not be incorporated by reference into any of those prior filings, nor
will such report or graph be  incorporated  by reference into any future filings
made by the Company under those statutes.
<PAGE>
         SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

         The following table sets forth certain information regarding beneficial
ownership  of the  Company's  Common  Stock as of November  28, 1997 by (i) each
Director and nominee for Director,  (ii) each of the Named  Executive  Officers,
(iii) each person known by the Company to be the  beneficial  owner of more than
5% of the Company's  Common Stock and (iv) all executive  officers and Directors
as a group.
<TABLE>
<CAPTION>
                                                     Number of Shares of         Percentage of
                                                 Common Stock Beneficially         Shares
Name and Address of Beneficial Owner                       Owned(1)              Outstanding(1)
- - ------------------------------------                       --------              --------------
<S>                                                       <C>                       <C>                     
Delphi Ventures III, L.P. (2)...............              1,151,534                  9.8%

State of Wisconsin Investment Board (3).....                884,800                  7.5%

DLJ Capital Corporation (4).................                815,384                  6.9%

Marquette Venture Partners II, L.P. (5).....                744,463                  6.3%

Dawson-Samberg Capital Management, Inc. (6).                735,294                  6.2%

Patrick A. McBrayer (7).....................                293,000                  2.5%

John P. Ryaby...............................                155,450                  1.3%

Richard H. Reisner (8)......................                153,412                  1.3%

Roger J. Talish (9).........................                145,963                  1.2%

John Bohan..................................                104,572                     *

Buzz Benson (10)............................                321,990                  2.7%

Donald J. Lothrop (11)......................              1,180,646                 10.0%

Terence D. Wall (12)........................                168,632                  1.4%

David J. Ottensmeyer, M.D. (13).............                  7,500                     *

Peter C. Madeja (14)........................                  7,500                     *

All executive officers and directors
  as a group (9 persons) (15)...............              2,538,665                 21.5%
- - ------------------------
</TABLE>
*    Represents  beneficial  ownership  of less than one  percent  of the Common
     Stock.

(1)  Applicable  percentage  of  ownership as of November 28, 1997 is based upon
     11,802,159  shares of Common  Stock  outstanding.  Beneficial  ownership is
     determined  in  accordance  with the rules of the  Securities  and Exchange
     Commission,  and  includes  voting and  investment  power  with  respect to
     shares.  Gives effect to the shares of Common Stock issuable within 60 days
     of  November  28, 1997 upon the  exercise  of all options and other  rights
     beneficially owned by the indicated stockholders on that date.
<PAGE>
(2)  Consists of (i) 443,439 shares owned by Delphi Ventures II, L.P. ("Ventures
     II"); (ii) 2,213 shares owned by Bio-Investments II, L.P. ("Bio-Investments
     II");  (iii) 693,398 shares owned by Delphi  Ventures III, L.P.  ("Ventures
     III") and (iv) 12,484  shares  owned by Delphi  Bio-Investments  III,  L.P.
     ("Bio-Investments III") (collectively,  the "Delphi Entities"). The address
     for the  Delphi  Entities  is 3000 Sand Hill Road,  Building  1, Suite 135,
     Menlo Park, California 94025.
(3)  The address for the State of Wisconsin  Investment  Board is P.O. Box 7842,
     Madison, Wisconsin 53707.
(4)  Consists of 111,470  shares  owned by DLJ Capital  Corporation  and 703,914
     shares  owned by Sprout  Capital VI, L.P.  DLJ Capital  Corporation  is the
     Managing  General  Partner of Sprout  Capital VI, L.P.  The address for DLJ
     Capital Corporation is 277 Park Avenue, New York, New York 10172.
(5)  Consists of 723,783 shares owned by Marquette Venture Partners II, L.P. and
     20,680  shares  owned by MVP II  Affiliates  Fund,  L.P.  The  address  for
     Marquette  Venture  Partners  II,  L.P.  is 520 Lake Cook Road,  Suite 450,
     Deerfield, Illinois 60015.
(6)  Consists of 652,660 shares owned by Pequot  Private  Equity Fund,  L.P. and
     82,634 shares owned by Pequot Offshore Private Equity Fund, Inc., funds for
     which Dawson-Samberg  Capital Management,  Inc. acts as investment manager.
     The  address  for  Dawson-Samberg  Capital  Management,  Inc. is 354 Pequot
     Avenue, Southport, Connecticut 06490.
(7)  Includes (i) 30,000 shares held by Mr. McBrayer's spouse; (ii) 1,000 shares
     held by Mr.  McBrayer's  two children;  and (iii) 147,500 shares pledged to
     Merrill Lynch Credit Corp. Mr. McBrayer disclaims  beneficial  ownership of
     the shares held by his spouse and two children.
(8)  Includes 1,000 shares held by Mr. Reisner's  spouse.  Mr. Reisner disclaims
     beneficial ownership of such shares.
(9)  Includes  5,060 shares held by Mr.  Talish's  daughter  and 120,793  shares
     pledged to Merrill  Lynch  Credit Corp.  Mr.  Talish  disclaims  beneficial
     ownership of the shares held by his daughter.
(10) Includes  (i) 299,465  shares  owned by Piper  Jaffray  Healthcare  Capital
     Limited Partnership (SBIC) ("Piper Jaffray"); (ii) 3,025 shares held by Mr.
     Benson's  children;  and (iii) 2,500 shares  issuable  upon the exercise of
     stock options,  of which 1,250 shares,  if issued,  would be subject to the
     Company's  repurchase  right.  Mr.  Benson is a Managing  Director of Piper
     Ventures  Capital,  Inc.,  which is the general  partner of Piper  Ventures
     Management IV Limited  Partnership,  which is the general  partner of Piper
     Jaffray and, as such,  may be deemed to share voting and  investment  power
     with respect to Piper Jaffray's  shares.  Mr. Benson  disclaims  beneficial
     ownership of Piper  Jaffray's  shares except to the extent of his pecuniary
     interest in such shares arising from his interest in the partnership.
(11) Includes  (i) 443,439  shares owned by Ventures II; (ii) 2,213 shares owned
     by Bio-Investments; (iii) 693,398 shares owned by Ventures III; (iv) 12,484
     shares owned by Bio-Investments  III and (v) 2,500 shares issuable upon the
     exercise of stock  options,  of which  1,250  shares,  if issued,  would be
     subject to the Company's repurchase right. Mr. Lothrop is a general partner
     of the general partner of Ventures II, Bio-Investments II, Ventures III and
     Bio-Investments  III,  respectively,  and, as such,  may be deemed to share
     voting and  investment  power  with  respect to such  shares.  Mr.  Lothrop
     disclaims  beneficial  ownership of such shares except to the extent of his
     pecuniary interest in such shares arising from his interest in Ventures II,
     Bio-Investments II, Ventures III and Bio-Investments III, respectively.
(12) Includes 2,500 shares issuable upon the exercise of stock options, of which
     1,250  shares,  if issued,  would be subject  to the  Company's  repurchase
     right.
<PAGE>
(13) Includes 7,500 shares issuable upon the exercise of stock options, of which
     5,625  shares,  if issued,  would be subject  to the  Company's  repurchase
     right.
(14) Includes 7,500 shares issuable upon the exercise of stock options, of which
     7,500  shares,  if issued,  would be subject  to the  Company's  repurchase
     right.
(15) See Notes (7) through (14) above.

Compliance with Reporting Requirements

          Under  the  securities  laws  of  the  United  States,  the  Company's
Directors,  executive officers, and any persons holding more than ten percent of
the  Company's  Common  Stock are  required  to report  their  ownership  of the
Company's  Common Stock and any changes in that  ownership to the Securities and
Exchange  Commission and the Nasdaq  National  Market  Surveillance  Department.
Specific due dates for these  reports have been  established  and the Company is
required  to report in this Proxy  Statement  any failure to file by these dates
during fiscal 1997. Based solely on its review of such forms received by it from
such persons for their fiscal 1997 transactions,  the Company believes that such
executive  officers,  directors  and  holders  of more than ten  percent  of the
Company's Common Stock have complied with all filing requirements  applicable to
such persons.

Certain Transactions

         In October 1997, the Company completed a $7.5 million private placement
(the "Private Placement") of 1,799,019 shares of its Common Stock.  Participants
in the Private Placement included Messrs.  Benson,  Lothrop and Wall. Mr. Benson
is a Managing  Director of Piper Ventures  Capital,  Inc.,  which is the general
partner  of Piper  Ventures  Management  IV  Limited  Partnership,  which is the
general partner of Piper Jaffray Piper Jaffray. Mr. Lothrop is a general partner
of Delphi Management Partners III, L.L.C.,  which is the general partner of each
Ventures  III  and   Bio-Investments   III.   Piper   Jaffray,   Ventures   III,
Bio-Investments III and Mr. Wall purchased 117,647,  693,398, 12,484 and 117,647
shares, respectively, in the Private Placement.
<PAGE>
                                   PROPOSAL 2:

         APPROVAL OF AMENDMENT TO 1995 STOCK OPTION/STOCK ISSUANCE PLAN


         The Company's  stockholders  are being asked to approve an amendment to
the 1995 Stock Option/Stock Issuance Plan (the "Option Plan") which includes the
following changes:

                  (i) increase  the number of shares of Common  Stock  available
         for issuance by 600,000 shares;

                  (ii)  allow  members  of  the  Compensation   Committee  which
         administers the Option Plan to receive  discretionary  grants and stock
         issuances  under the  Discretionary  Option  Grant  and Stock  Issuance
         Programs of the Option Plan;

                  (iii) allow the shares  issued under the Option Plan which are
         subsequently  reacquired  by the  Company  pursuant  to  the  Company's
         exercise of its repurchase rights to be added back to the share reserve
         available for future issuance under the Option Plan;

                  (iv) require stockholder  approval of future amendments to the
         Option Plan only to the extent necessary to satisfy  applicable laws or
         regulations;

                  (v) allow  either the Board or the  Compensation  Committee to
         administer  the  Option  Plan with  respect to  individuals  subject to
         Section 16 of the Securities Exchange Act of 1934, as amended;

                  (vi) allow non-statutory options granted under the Option Plan
         to be transferred to family  members or trusts  established  for family
         members in connection with the optionee's estate planning; and

                  (vii) eliminate the six-month  holding period  requirement for
         the exercise of limited stock appreciation  rights in connection with a
         hostile take-over.

         The  amendment  to the Option Plan was adopted by the Board on November
14, 1997, subject to stockholder  approval at the 1998 Annual Meeting. The Board
believes  it is in the best  interests  of the  Company  to  increase  the share
reserve so that the Company can  continue to attract and retain the  services of
those persons  essential to the  Company's  growth and  financial  success.  The
purpose  of the  remaining  changes to the  Option  Plan is to provide  the Plan
Administrator  with more  flexibility  as is allowed under recent changes to the
regulations governing employee option plans such as the Option Plan.

         The  following  is a summary of the  principal  features  of the Option
Plan. The summary, however, does not purport to be a complete description of all
the provisions of the Option Plan. Any  stockholder of the Company who wishes to
obtain a copy of the actual plan document may do so upon written  request to the
Corporate  Secretary at the Company's principal executive offices in Piscataway,
New Jersey.

Equity Incentive Programs

         The Option Plan contains four separate equity incentive programs: (i) a
Discretionary  Option  Grant  Program,  (ii) a Salary  Investment  Option  Grant
Program,  (iii) a Stock  Issuance  Program and (iv) an  Automatic  Option  Grant
<PAGE>
Program.  The  principal  features of these  programs are described  below.  The
Option Plan (other than the Automatic  Option Grant Program) is  administered by
the   Compensation   Committee  of  the  Board.   This   committee   (the  "Plan
Administrator") has complete discretion (subject to the provisions of the Option
Plan) to authorize  option  grants and direct stock  issuances  under the Option
Plan.  However,  all grants under the Automatic Option Grant Program are made in
strict  compliance  with the provisions of that program,  and no  administrative
discretion  is  exercised by the Plan  Administrator  with respect to the grants
made thereunder.

Share Reserve

         1,350,000  shares of Common Stock have been  reserved for issuance over
the ten year term of the Option Plan. In no event may any one participant in the
Option Plan be granted stock options,  separately exercisable stock appreciation
rights and direct  stock  issuances  for more than  300,000  shares per calendar
year.

         In the event any  change  is made to the  outstanding  shares of Common
Stock  by  reason  of  any  recapitalization,   stock  dividend,   stock  split,
combination of shares, exchange of shares or other change in corporate structure
effected without the Company's receipt of consideration, appropriate adjustments
will  be  made  to the  securities  issuable  (in  the  aggregate  and  to  each
participant)  under the Option Plan and to the  securities  and  exercise  price
under each outstanding option.

Eligibility

         Officers  and  other  employees  of  the  Company  and  its  parent  or
subsidiaries  (whether now existing or subsequently  established),  non-employee
members of the Board and the board of  directors  of its parent or  subsidiaries
and  consultants  and  independent  advisors  of the  Company and its parent and
subsidiaries are eligible to participate in the  Discretionary  Option Grant and
Stock Issuance Programs. Employees of the Company and its parent or subsidiaries
are also eligible to participate in the Salary  Investment Option Grant Program.
Only  non-employee  members  of the Board are  eligible  to  participate  in the
Automatic Option Grant Program.

         As of November 28, 1997,  approximately 4 executive officers,  71 other
employees and 5  non-employee  Board members were eligible to participate in the
Option Plan,  and 5  non-employee  Board members were eligible to participate in
the Automatic Option Grant Program.

Valuation

         The fair market value per share of Common  Stock on any  relevant  date
under the Option Plan will be the closing  selling  price per share on that date
on the Nasdaq National  Market.  On November 28, 1997, the closing selling price
per share was $3.75.

                       Discretionary Option Grant Program

         Options may be granted under the Discretionary  Option Grant Program at
an  exercise  price per share not less than the fair  market  value per share of
Common  Stock on the option  grant date.  No granted  option will have a term in
excess of ten years.
<PAGE>
         Upon  cessation of service,  the optionee will have a limited period of
time in which to exercise  any  outstanding  option to the extent such option is
exercisable  for  vested  shares.  The Plan  Administrator  will  have  complete
discretion to extend the period  following the  optionee's  cessation of service
during  which  his  or  her  outstanding  options  may be  exercised  and/or  to
accelerate  the  exercisability  or vesting of such options in whole or in part.
Such  discretion  may  be  exercised  at  any  time  while  the  options  remain
outstanding, whether before or after the optionee's actual cessation of service.

         The  Plan  Administrator  is  authorized  to issue  two  types of stock
appreciation   rights  in   connection   with  option   grants  made  under  the
Discretionary Option Grant Program:

                  Tandem stock appreciation  rights provide the holders with the
         right to surrender their options for an appreciation  distribution from
         the Company  equal in amount to the excess of (a) the fair market value
         of the vested shares of Common Stock subject to the surrendered  option
         over (b) the aggregate  exercise  price  payable for such shares.  Such
         appreciation   distribution   may,  at  the   discretion  of  the  Plan
         Administrator, be made in cash or in shares of Common Stock.

                  Limited stock  appreciation  rights may be granted to officers
         of the Company as part of their option  grants.  Any option with such a
         limited stock  appreciation  right in effect may be  surrendered to the
         Company upon the  successful  completion of a hostile  take-over of the
         Company.  In return for the  surrendered  option,  the officer  will be
         entitled  to a cash  distribution  from the  Company  in an amount  per
         surrendered option share equal to the excess of (a) the take-over price
         per share over (b) the exercise price payable for such share.

                  The Plan  Administrator  will have the authority to effect the
cancellation of outstanding options under the Discretionary Option Grant Program
which have exercise  prices in excess of the then current market price of Common
Stock and to issue  replacement  options  with an  exercise  price  based on the
market price of Common Stock at the time of the new grant.

                     Salary Investment Option Grant Program

         The Plan  Administrator  has complete  discretion in  implementing  the
Salary  Investment  Option Grant Program for one or more  calendar  years and in
selecting  the  executive  officers and other  eligible  individuals  who are to
participate   in  the  program  for  those   years.   As  a  condition  to  such
participation, each selected individual must, prior to the start of the calendar
year  of  participation,   file  with  the  Plan  Administrator  an  irrevocable
authorization  directing the Company to reduce, by a designated  multiple of one
percent (1%), his or her base salary for the upcoming  calendar year. The salary
reduction  amount must not be less than Five Thousand Dollars  ($5,000.00),  and
may not be more than the lesser of (i) twenty  percent  (20%) of his or her base
salary or (ii) Twenty Thousand Dollars ($20,000.00). Each individual who files a
proper salary reduction  authorization  will be granted a stock option under the
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.

         Each  option  will be  subject  to  substantially  the same  terms  and
conditions applicable to option grants made under the Discretionary Option Grant
Program, except for the following differences:
<PAGE>
                  - Each option will be a non-statutory option.

                  - The  exercise  price per share will be equal to one-third of
         the fair  market  value per share of Common  Stock on the option  grant
         date,  and the number of option  shares will be  determined by dividing
         the total dollar amount of the  authorized  reduction in the optionee's
         base salary by  two-thirds of the fair market value per share of Common
         Stock on the option  grant date.  As a result,  the total spread on the
         option  (the fair market  value of the option  shares on the grant date
         less the aggregate  exercise price payable for those shares) will equal
         the dollar amount of the reduction to the optionee's  base salary to be
         in effect for the calendar year for which the option grant is made.

                  - The option will become  exercisable for the option shares 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 will remain  outstanding for vested shares 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
         the optionee's service terminates.

                             Stock Issuance Program

         Shares  may be sold  under the Stock  Issuance  Program  at a price per
share not less than the fair market value per share of Common Stock,  payable in
cash or through a promissory  note  payable to the  Company.  Shares may also be
issued solely as a bonus for past services.

         The issued  shares may either be  immediately  vested upon  issuance or
subject  to a  vesting  schedule  tied  to the  performance  of  service  or the
attainment of performance goals. The Plan Administrator will, however,  have the
discretionary  authority at any time to  accelerate  the vesting of any unvested
shares.

                         Automatic Option Grant Program

         Under the Automatic  Option Grant  Program,  each  individual who first
becomes a non-employee  Board member will  automatically be granted at that time
an option grant for 7,500 shares of Common Stock,  provided such  individual has
not been in the prior  employ of the Company.  In addition,  on the date of each
Annual  Stockholders  Meeting,  beginning  with the 1996  Annual  Meeting,  each
individual who is to continue to serve as a non-employee Board member after such
meeting  will  automatically  be granted an option to purchase  1,250  shares of
Common Stock, provided such individual has served as a non-employee Board member
for at  least  six  months.  There  will  be no  limit  on the  number  of  such
1,250-share options which any one non-employee Board member may receive over the
period of Board service.

         Each option will have an exercise  price per share equal to 100% of the
fair  market  value per share of Common  Stock on the  option  grant  date and a
maximum term of ten years measured from the option grant date.

         Each option will be immediately  exercisable for all the option shares,
but any purchased  shares will be subject to  repurchase by the Company,  at the
exercise price paid per share,  upon the optionee's  cessation of Board service.
Each initial  option grant will vest (and the Company's  repurchase  rights will
<PAGE>
lapse) in four equal annual  installments  over the  optionee's  period of Board
service, with the first such installment to vest upon the completion of one year
of Board service  measured from the option grant date.  Each annual option grant
will vest (and the Company's  repurchase  rights will lapse) upon the completion
of one year of Board service measured from the option grant date.

         The shares subject to each automatic option grant will immediately vest
upon the  optionee's  death or permanent  disability  or an  acquisition  of the
Company  by merger or asset sale or a hostile  change in control of the  Company
(whether by successful tender offer for more than 50% of the outstanding  voting
stock or by proxy contest for the election of Board members). In addition,  upon
the successful  completion of a hostile  take-over,  each automatic option grant
may be surrendered to the Company for a cash distribution per surrendered option
share in an amount equal to the excess of (a) the take-over price per share over
(b) the exercise price payable for such share.

                               General Provisions

Acceleration

         In the event that the Company is acquired by merger or asset sale, each
outstanding option under the Discretionary  Option Grant Program which is not to
be assumed by the successor  corporation or replaced with a comparable option to
purchase  shares  of  the  capital  stock  of  the  successor  corporation  will
automatically  accelerate  in full,  and all  unvested  shares  under  the Stock
Issuance  Program  will  immediately  vest,  except to the extent the  Company's
repurchase  rights  with  respect  to those  shares  are to be  assigned  to the
successor  corporation.  Any options assumed or replaced in connection with such
acquisition will be subject to immediate  acceleration,  and any unvested shares
which do not vest at the time of such  acquisition  will be  subject to full and
immediate  vesting,  in the  event  the  individual's  service  is  subsequently
terminated  within  18  months  following  the  acquisition.  Each  option  will
automatically  accelerate  and all  unvested  shares will be subject to full and
immediate vesting in the event the individual's  service is terminated within 18
months  following  a hostile  change  in  control  of the  Company  (whether  by
successful tender offer for more than 50% of the outstanding  voting stock or by
proxy contest for the election of Board members).

         In the event that the Company is acquired or there is a hostile  change
in control of the Company (whether by successful  tender offer for more than 50%
of the  outstanding  voting stock or by proxy  contest for the election of Board
members),  each  outstanding  option  under the Salary  Investment  Option Grant
Program will  automatically  accelerate in full. Each option  outstanding at the
time  of an  acquisition  of the  Company  will  be  assumed  by  the  successor
corporation.

         The  acceleration  of vesting in the event of a change in the ownership
or control of the Company may be seen as an anti-takeover provision and may have
the  effect of  discouraging  a merger  proposal,  a  takeover  attempt or other
efforts to gain control of the Company.

Financial Assistance

         The Plan  Administrator  may permit one or more participants to pay the
exercise price of outstanding  options or the purchase price of shares under the
Option Plan by delivering a promissory  note payable in  installments.  The Plan
Administrator will determine the terms of any such promissory note. However, the
<PAGE>
maximum  amount of financing  provided any  participant  may not exceed the cash
consideration  payable for the issued shares plus all applicable  taxes incurred
in connection with the  acquisition of the shares.  Any such promissory note may
be subject to  forgiveness  in whole or in part,  at the  discretion of the Plan
Administrator, over the optionee's period of service.

Special Tax Election

         The Plan  Administrator  may provide one or more  holders of options or
unvested  shares  with the right to have the  Company  withhold a portion of the
shares  otherwise  issuable  to  such  individuals  in  satisfaction  of the tax
liability  incurred by such individuals in connection with the exercise of those
options or the vesting of those shares.  Alternatively,  the Plan  Administrator
may allow such individuals to deliver previously acquired shares of Common Stock
in payment of such tax liability.

Amendment and Termination

         The Board may amend or modify  the Option  Plan in any or all  respects
whatsoever  subject to any stockholder  approval  required under applicable laws
and  regulations.  The Board may terminate the Option Plan at any time,  and the
Option Plan will in all events terminate on April 30, 2005.
<PAGE>
Stock Awards

         The table below shows, as to each of the Company's  executive  officers
named in the Summary  Compensation  Table and the various indicated  individuals
and  groups,  the number of shares of Common  Stock  subject to options  granted
between  October 1, 1996 and  November  28,  1997,  together  with the  weighted
average exercise price payable per share.
<TABLE>
<CAPTION>
                                         OPTION TRANSACTIONS

                                                                                       Weighted
                                                         Number of                      Average
       Name                                             Option Shares                Exercise Price
       ----                                             -------------                --------------
<S>                                                      <C>                            <C>
Patrick A. McBrayer                                          -                             -
Chief Executive Officer and President

John P. Ryaby                                                -                             -
Chairman of the Board of Directors and Vice
President of Research and Development and
Regulatory Affairs

Richard H. Reisner                                           -                             -
Vice President, Chief Financial Officer and
Secretary

Roger J. Talish                                              -                             -
Vice President of Operations

John Bohan                                                   -                             -
Vice President of Sales and Marketing

All current executive officers as a group                    -                             -
(4 persons)

Buzz Benson                                                1,250                        $4.75
Director

Donald J. Lothrop                                          1,250                        $4.75
Director

Terence D. Wall                                            1,250                        $4.75
Director

David J. Ottensmeyer, M.D.                                 7,500                        $4.50
Director

Peter C. Madeja                                            7,500                        $4.75
Director

All non-employee directors as a group                     18,750                        $4.65
(5 persons)

All employees, including current officers who are
not executive officers as a group (56 persons)           271,800                        $4.17
</TABLE>
<PAGE>
                                   Federal Income Tax Consequences

Option Grants

         Options  granted  under the Option Plan may be either  incentive  stock
options which satisfy the  requirements  of Section 422 of the Internal  Revenue
Code or non-statutory  options which are not intended to meet such requirements.
The  Federal  income  tax  treatment  for the two types of  options  differs  as
follows:

         Incentive  Options.  No taxable income is recognized by the optionee at
the time of the option grant,  and no taxable income is generally  recognized at
the time the option is exercised. The optionee will, however,  recognize taxable
income in the year in which the purchased shares are sold or otherwise  disposed
of. For Federal tax purposes,  dispositions are divided into two categories: (i)
qualifying and (ii) disqualifying.  A qualifying  disposition occurs if the sale
or other  disposition  is made after the  optionee  has held the shares for more
than two years  after the  option  grant  date and more than one year  after the
exercise date. If either of these two holding  periods is not satisfied,  then a
disqualifying disposition will result.

         If the optionee  makes a  disqualifying  disposition  of the  purchased
shares,  then the Company will be entitled to an income tax  deduction,  for the
taxable year in which such  disposition  occurs,  equal to the excess of (i) the
fair  market  value of such  shares on the  option  exercise  date over (ii) the
exercise  price paid for the shares.  In no other  instance  will the Company be
allowed a deduction with respect to the optionee's  disposition of the purchased
shares.

         Non-Statutory  Options.  No taxable income is recognized by an optionee
upon the grant of a non-statutory option. The optionee will in general recognize
ordinary  income,  in the year in which the  option is  exercised,  equal to the
excess of the fair market value of the  purchased  shares on the  exercise  date
over the exercise  price paid for the shares,  and the optionee will be required
to satisfy the tax withholding requirements applicable to such income.

         If the shares  acquired upon exercise of the  non-statutory  option are
unvested and subject to repurchase by the Company in the event of the optionee's
termination of service prior to vesting in those shares,  then the optionee will
not recognize any taxable income at the time of exercise but will have to report
as ordinary income, as and when the Company's repurchase right lapses, an amount
equal to the excess of (i) the fair  market  value of the shares on the date the
repurchase  right lapses over (ii) the exercise  price paid for the shares.  The
optionee may, however, elect under Section 83(b) of the Internal Revenue Code to
include as ordinary income in the year of exercise of the option an amount equal
to the  excess  of (i) the fair  market  value of the  purchased  shares  on the
exercise date over (ii) the exercise price paid for such shares.  If the Section
83(b) election is made, the optionee will not recognize any additional income as
and when the repurchase right lapses.

         The Company  will be entitled to an income tax  deduction  equal to the
amount of  ordinary  income  recognized  by the  optionee  with  respect  to the
exercised non-statutory option. The deduction will in general be allowed for the
taxable year of the Company in which such  ordinary  income is recognized by the
optionee.
<PAGE>
Stock Appreciation Rights

         An optionee who is granted a stock  appreciation  right will  recognize
ordinary income in the year of exercise equal to the amount of the  appreciation
distribution.  The Company will be entitled to an income tax deduction  equal to
the appreciation  distribution for the taxable year in which the ordinary income
is recognized by the optionee.

Direct Stock Issuance

         The tax  principles  applicable  to direct  stock  issuances  under the
Option Plan will be  substantially  the same as those  summarized  above for the
exercise of non-statutory option grants.

                              Accounting Treatment

         Option  grants or stock  issuances  to employees at 100% of fair market
value will not  result in any charge to the  Company's  earnings.  However,  the
number of  outstanding  options  may be a factor in  determining  the  Company's
earnings per share on a fully-diluted basis. Option grants or stock issuances to
consultants and independent advisors at 100% of fair market value will result in
a charge to earnings  equal to the fair value of the award and will be amortized
over the vesting period. Under the new FASB release, footnote disclosure will be
required as to the impact the  outstanding  options  under the Option Plan would
have upon the  Company's  reported  earnings  were those  options  appropriately
valued as compensation expense.

         Should one or more optionees be granted stock appreciation rights which
have no  conditions  upon  exercisability  other  than a service  or  employment
requirement,  then such  rights  will  result in a  compensation  expense to the
Company's earnings.

                                New Plan Benefits

         As of November 28, 1997,  no options have been granted under the Option
Plan in reliance upon the  600,000-share  increase  which is the subject of this
Proposal 2. However,  on the date of the 1998 Annual  Meeting,  Messrs.  Benson,
Lothrop,  Wall and Madeja, and Dr. Ottensmeyer each will be granted an option to
purchase  1,250 shares of Common Stock under the Automatic  Option Grant Program
at an exercise  price per share equal to the closing  selling price per share of
Common Stock on that date on the Nasdaq National Market.

                              Stockholder Approval

         The affirmative vote of a majority of the outstanding  voting shares of
the  Company  present or  represented  and  entitled  to vote at the 1998 Annual
Meeting is required  for approval of the  amendment  to the Option Plan.  Should
such  stockholder  approval not be obtained,  then the share reserve will not be
increased,  unvested shares repurchased by the Company pursuant to the Company's
repurchase  right  will not be added  back to the share  reserve  available  for
future issuances and the members of the  Compensation  Committee will not become
eligible to receive option grants under the  Discretionary  Option Grant Program
or receive  issuances  under the Stock Issuance  Program.  The Option Plan will,
however, continue to remain in effect, and option grants and stock issuances may
continue  to be  made  pursuant  to the  provisions  of the  Plan  prior  to its
amendment until the available reserve of Common Stock under the plan is issued.
<PAGE>
         The Board of Directors  recommends that the  stockholders  vote FOR the
approval of the amendment to the Option Plan.  The Board  believes that it is in
the best  interests  of the Company to continue to have a  comprehensive  equity
incentive  program for the Company  which will provide a meaningful  opportunity
for officers,  employees and non-employee Board members to acquire a substantial
proprietary interest in the enterprise and thereby encourage such individuals to
remain in the  Company's  service and more closely  align their  interests  with
those of the stockholders.
<PAGE>
                                   PROPOSAL 3:

              APPROVAL OF AMENDMENT TO EMPLOYEE STOCK PURCHASE PLAN


         The Company's  stockholders  are being asked to approve an amendment to
the Employee Stock  Purchase Plan (the "Purchase  Plan") which will increase the
maximum  number of shares of Common Stock  authorized for issuance over the term
of the Purchase Plan from 150,000 shares to 350,000 shares.

         The amendment to the Purchase Plan was adopted by the Board on November
14, 1997, subject to stockholder  approval at the 1998 Annual Meeting. The Board
believes  it is in the best  interests  of the  Company  to  increase  the share
reserve  to  ensure  that  such  plan  will  continue  to serve as a  meaningful
incentive for the employees of the Company and its affiliates to continue in the
Company's  service by giving them the  opportunity to acquire an equity interest
in the Company  and thereby  further  align  their  interests  with those of the
stockholders.

         The  following is a summary of the  principal  features of the Purchase
Plan. The summary, however, does not purport to be a complete description of all
the provisions of the Purchase  Plan. Any  stockholder of the Company who wishes
to obtain a copy of the actual plan  document may do so upon written  request to
the  Corporate  Secretary  at  the  Company's  principal  executive  offices  in
Piscataway, New Jersey.

Purpose

         The purpose of the Purchase  Plan is to provide  eligible  employees of
the Company and its  participating  affiliates with the opportunity to acquire a
proprietary interest in the Company through participation in a payroll-deduction
based  employee  stock  purchase plan under Section 423 of the Internal  Revenue
Code. Participating affiliates may include any parent or subsidiary corporations
of the Company,  whether now existing or hereafter  established,  which elect to
extend the benefits of the Purchase Plan to their eligible employees.

Administration

         The Purchase Plan is  administered  by a committee  comprised of two or
more  members of the Board.  Such  committee,  as Plan  Administrator,  has full
authority to adopt  administrative  rules and  procedures  and to interpret  the
provisions  of the  Purchase  Plan.  All costs  and  expenses  incurred  in plan
administration are paid by the Company without charge to participants.

Securities Subject to the Purchase Plan

         The shares of Common  Stock  issuable  under the  Purchase  Plan may be
either  shares newly issued by the Company or shares  reacquired by the Company,
including shares  purchased on the open market.  The maximum number of shares of
Common  Stock which may be sold to  participants  over the term of the  Purchase
Plan may not exceed 350,000 shares.

         In the  event  that any  change  is made to the  Company's  outstanding
Common  Stock  (whether by reason of  recapitalization,  stock  dividend,  stock
split,  exchange or combination of shares or other change in corporate structure
effected   without  the  Company's   receipt  of   consideration),   appropriate
adjustments  will be made to (i) the class  and  maximum  number  of  securities
issuable over the term of the Purchase  Plan,  (ii) the class and maximum number
<PAGE>
of securities  purchasable per participant on any one semi-annual  purchase date
and (iii) the class and number of  securities  and the price per share in effect
under each outstanding purchase right.

Offering Periods

         Shares of Common Stock are offered  under the  Purchase  Plan through a
series  of  successive  offering  periods,  each  with  a  maximum  duration  of
twenty-four (24) months.  The initial offering period began on July 25, 1995 and
terminated on the last business day in July 1997.  The current  offering  period
began on the first business day in August 1997 and will end on the last business
day in July 1999; and subsequent offering periods will commence as designated by
the Plan Administrator.

         Each  offering  period  will 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
January and July respectively each year.

Eligibility

         Any  individual  who is  employed  on a basis  under which he or she is
expected  to work more than  twenty  (20)  hours per week for more than five (5)
months  per  calendar  year in the employ of the  Company  or any  participating
parent or  subsidiary  corporation  is eligible to  participate  in the Purchase
Plan.

         As of  November  28,  1997,  approximately  74  employees,  including 4
executive officers, were eligible to participate in the Purchase Plan.

Participation

         An individual who is an eligible  employee may join an offering  period
on the start date of such offering period or on any subsequent semi-annual entry
date (the first  business  day in  February  and August  each year)  within that
offering  period  provided,  in each case, that such individual has completed at
least  three (3) months of service  with the  Company  or any  affiliate  of the
Company prior to such date.

         At the time a participant  joins the offering period, he or she will be
granted a right to purchase shares of Common Stock. That right will be exercised
on the last  business day in January and July of each year during that  offering
period,  and all payroll  deductions  collected from the participant  during the
period ending with each such  semi-annual  purchase date will  automatically  be
applied to the purchase of Common Stock.

Payroll Deductions and Stock Purchases

         A participant may authorize periodic payroll deductions in any multiple
of one percent  (1%) (up to a maximum of ten  percent  (10%)) of his or her cash
compensation to be applied to the acquisition of Common Stock under the Purchase
Plan. Cash compensation  includes base salary and any pre-tax contributions made
by the  participant to any Code Section 401(k) salary  deferral plan or any Code
Section 125 cafeteria benefit plan,  overtime  payments,  bonuses,  commissions,
profit-sharing   distributions  and  other  incentive-type   payments.  On  each
semi-annual purchase date (the last business day in January and July each year),
the payroll  deductions of each participant will automatically be applied to the
purchase of whole shares of Common Stock at the purchase price in effect for the
participant for that purchase date.
<PAGE>
Purchase Price

         The  purchase  price of the Common Stock  acquired on each  semi-annual
purchase date will 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
the offering  period or (ii) the fair market value on the  semi-annual  purchase
date.  However,  the clause (i) amount for any  participant  whose entry date is
other than the start date of the offering  period will not be less than the fair
market value per share of Common Stock on that start date.

         The fair market value of the Common  Stock on any  relevant  date under
the Purchase  Plan will be the closing  selling  price per share on such date on
the Nasdaq  National  Market.  On November 28,  1997,  the fair market value per
share of Common Stock was $3.75 per share.

Special Limitations

         The  Purchase   Plan   imposes  the   following   limitations   upon  a
participant's rights to acquire Common Stock:

         (i) Purchase rights may not be granted to any individual who owns stock
         (including  stock  purchasable  under any outstanding  purchase rights)
         possessing five percent (5%) or more of the total combined voting power
         or  value  of  all  classes  of  stock  of  the  Company  or any of its
         affiliates.

         (ii)  Purchase  rights  granted to a  participant  may not permit  such
         individual to purchase more than $25,000 of Common Stock (valued at the
         time each purchase right is granted) during any one calendar year.

         (iii) No  participant  may  purchase  more than 2,500  shares of Common
         Stock on any semi-annual purchase date.

Termination of Purchase Rights

         A participant  may withdraw from the Purchase Plan at any time prior to
the next  semi-annual  purchase  date and  elect to have his or her  accumulated
payroll  deductions  either  refunded  immediately or applied to the purchase of
Common Stock on the next semi-annual purchase date.

         A participant's  purchase right will immediately  terminate upon his or
her  cessation of employment or loss of eligible  employee  status.  Any payroll
deductions  which the participant  may have made for the  semi-annual  period in
which his or her employment  terminates will be refunded and will not be applied
to the purchase of Common Stock.

Stockholder Rights

         No  participant  will have any  stockholder  rights with respect to the
shares  covered by his or her  purchase  rights  until the  shares are  actually
purchased on the participant's behalf. No adjustment will be made for dividends,
distributions  or other rights for which the record date is prior to the date of
such purchase.

Assignability

         Purchase  rights will only be exercisable by the  participant  and will
not be assignable or transferable  by the participant  other than by will or the
laws of descent and distribution following the death of the participant.
<PAGE>
Corporate Transaction

         In the event the  Company  is  acquired  by merger or asset  sale,  all
outstanding purchase rights will automatically be exercised immediately prior to
the effective  date of such  corporate  transaction.  The purchase price will be
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  will
continue to apply to any such purchase, and in no event will the clause (i) fair
market value be less than the fair market value per share of Common Stock on the
start date of the offering period in which such corporate transaction occurs.

Amendment and Termination

         The Purchase Plan will terminate upon the earlier of (i) July 31, 2005,
(ii) the date on which all shares  available  for issuance  thereunder  are sold
pursuant to exercised  purchase rights,  or (iii) the date on which all purchase
rights are exercised in connection with a corporate transaction.

         The Board may at any time alter,  suspend or  discontinue  the Purchase
Plan. However,  certain amendments may require stockholder  approval pursuant to
applicable laws or regulations.

Federal Tax Consequences

         The Purchase Plan is intended to be an "employee  stock  purchase plan"
within the meaning of Section 423 of the  Internal  Revenue  Code.  Under a plan
which so qualifies,  no taxable income will be recognized by a participant,  and
no  deductions  will be allowable  to the Company,  upon either the grant or the
exercise of the purchase  rights.  Taxable  income will not be recognized  until
there is a sale or other  disposition of the shares  acquired under the Purchase
Plan or in the event the participant should die while still owning the purchased
shares.

         If the participant sells or otherwise  disposes of the purchased shares
within  two (2) years  after his or her entry date into the  offering  period in
which such  shares were  acquired  or within one (1) year after the  semi-annual
purchase date on which those shares were actually acquired, then the participant
will recognize  ordinary income in the year of sale or disposition  equal to the
amount  by which  the fair  market  value of the  shares  on the  purchase  date
exceeded  the  purchase  price paid for those  shares,  and the Company  will be
entitled  to an  income  tax  deduction,  for the  taxable  year in  which  such
disposition occurs, equal in amount to such excess.

         If the participant  sells or disposes of the purchased shares more than
two (2) years after his or her entry date into the offering  period in which the
shares were acquired and more than one year after the semi-annual  purchase date
of those shares, then the participant will recognize ordinary income in the year
of sale or  disposition  equal to the lesser of (i) the amount by which the fair
market value of the shares on the sale or disposition date exceeded the purchase
price paid for those  shares or (ii)  fifteen  percent  (15%) of the fair market
value of the shares on the  participant's  entry date into that offering period;
and any  additional  gain  upon the  disposition  will be  taxed as a  long-term
capital gain.  The Company will not be entitled to an income tax deduction  with
respect to such disposition.
<PAGE>
         If the  participant  still  owns the  purchased  shares  at the time of
death, the lesser of (i) the amount by which the fair market value of the shares
on the date of death exceeds the purchase price or (ii) fifteen percent (15%) of
the fair market  value of the shares on his or her entry date into the  offering
period in which those shares were acquired will  constitute  ordinary  income in
the year of death.

Accounting Treatment

         Under current  accounting rules, the issuance of Common Stock under the
Purchase Plan will not result in a compensation  expense  chargeable against the
Company's reported earnings.  However,  the Company must disclose,  in pro-forma
statements to the Company's financial statements, the impact the purchase rights
granted under the Purchase Plan would have upon the Company's  reported earnings
were the value of those purchase rights treated as compensation expense.

Stock Issuances

         The table below shows, as to each of the Company's  executive  officers
named in the Summary  Compensation  Table and the various indicated groups,  the
number of shares of Common  Stock  purchased  under the  Purchase  Plan  between
October 1, 1996 and  November  28,  1997,  together  with the  weighted  average
purchase price paid per share.
<TABLE>
<CAPTION>
                                    PURCHASE PLAN TRANSACTIONS

                                                          Number of                 Weighted
                                                            Shares              Average Purchase
        Name                                               Purchased                   Price
        ----                                               ---------                   -----
<S>                                                         <C>                        <C>
Patrick A. McBrayer                                             --                        --
Chief Executive Officer and President

John P. Ryaby
Chairman of the Board of Directors and Vice                     --                        --
President of Research and Development and
Regulatory Affairs

Richard H. Reisner                                           1,571                     $4.14
Vice President, Chief Financial Officer and
Secretary

Roger J. Talish                                              2,953                     $3.56
Vice President of Operations

John Bohan                                                     736                     $4.14
Vice President of Sales and Marketing

All current executive officers as a group                    4,524                     $3.76
(4 persons)

All employees, including current officers who are
not executive officers as a group                           51,736                     $3.57
(54 persons)
</TABLE>
<PAGE>
                                New Plan Benefits

         As of November 28, 1997, no purchase rights have been granted under the
Purchase Plan in reliance upon the  200,000-share  increase which is the subject
of this Proposal 3.

                              Stockholder Approval

         The affirmative vote of a majority of the outstanding  voting shares of
the  Company  present or  represented  and  entitled  to vote at the 1998 Annual
Meeting is required for approval of the amendments to increase the share reserve
under the Purchase Plan by an additional 200,000 shares. Should such stockholder
approval  not be  obtained,  then,  the share  reserve  will not be increased by
200,000 shares. The Purchase Plan will,  however,  continue to remain in effect,
and purchase rights may continue to be granted pursuant to the provisions of the
Purchase Plan prior to its amendment until the available reserve of Common Stock
under the plan is issued.

         The Board of Directors  recommends that the  stockholders  vote FOR the
approval of the amendment to the Purchase Plan.
<PAGE>
                                   PROPOSAL 4:

                            RATIFICATION OF SELECTION
                        OF INDEPENDENT PUBLIC ACCOUNTANTS


         Upon the recommendation of the Audit Committee,  the Board of Directors
appointed Arthur Andersen LLP,  independent  public  accountants and auditors of
the Company since the Company's  inception,  as auditors of the Company to serve
for the fiscal year ending  September 30, 1998,  subject to the  ratification of
such appointment by the stockholders at the Annual Meeting. The affirmative vote
of a  majority  of the  outstanding  voting  shares of the  Company  present  or
represented  and  entitled  to vote at the 1998  Annual  Meeting is  required to
ratify the appointment of the auditors.  A representative of Arthur Andersen LLP
will attend the Annual Meeting of  Stockholders  with the  opportunity to make a
statement  if he or  she so  desires  and  will  also  be  available  to  answer
inquiries.

         The Board of Directors  recommends that the  stockholders  vote FOR the
ratification  of  Arthur  Andersen  LLP  as  the  Company's  independent  public
accountants for the fiscal year ending September 30, 1998.

                              STOCKHOLDER PROPOSALS

         In accordance  with  regulations  issued by the Securities and Exchange
Commission,  stockholder  proposals intended for presentation at the 1999 Annual
Meeting of  Stockholders  must be  received by the  Secretary  of the Company no
later than October 28, 1998 if such proposals are to be considered for inclusion
in the Company's Proxy Statement.

                                  OTHER MATTERS

         Management  knows of no matters that are to be presented  for action at
the  Annual  Meeting  other  than those set forth  above.  If any other  matters
properly come before the Annual Meeting,  the persons named in the enclosed form
of proxy will vote the shares  represented  by proxies in accordance  with their
best judgment on such matters.

         Proxies  will be  solicited by mail and may also be solicited in person
or by telephone by some regular  employees of the Company.  The Company may also
consider the engagement of a proxy  solicitation firm. Costs of the solicitation
will be borne by the Company.


                                           By Order of the Board of Directors


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


Piscataway, New Jersey
January 8, 1998
<PAGE>
                                  APPENDIX A-1

                                 FORM OF PROXY


                                REVOCABLE PROXY
                                  EXOGEN, INC.

        [ X ] PLEASE MARK VOTES AS IN THIS EXAMPLE


          PROXY FOR ANNUAL MEETING OF STOCKHOLDERS -- FEBRUARY 25, 1998

       (This Proxy is solicited by the Board of Directors of the Company)

  The  undersigned  stockholder  of  Exogen,  Inc.  hereby  appoints  Patrick A.
McBrayer,  Chief Executive Officer and President,  and Richard H. Reisner,  Vice
President,  Chief Financial  Officer and Secretary,  and each of them, with full
power of substitution, proxies to vote the shares of stock which the undersigned
could  vote if  personally  present at the Annual  Meeting  of  Stockholders  of
Exogen,  Inc. to be held at The  Holiday  Inn  Somerset,  195  Davidson  Avenue,
Somerset,  New Jersey  08873,  telephone  number (732)  356-1700 on February 25,
1998, at 9:00 a.m. (eastern standard time), or any adjournment thereof.

1. ELECTION OF DIRECTORS (for terms as described in the Proxy Statement)

                [   ] FOR      [   ] WITHHOLD      [   ] FOR ALL EXCEPT


   John P. Ryaby, Patrick A. McBrayer, Buzz Benson, Donald J. Lothrop, 
   Terence D. Wall, David J. Ottensmeyer, M.D. and Peter C. Madeja.
   

   INSTRUCTION  To withhold  authority to vote for an individual  nominee,  mark
   "For All Except" and write that nominee's name in the space provided below.


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

2. APPROVAL OF  AMENDMENT  TO THE 1995 STOCK  OPTION/STOCK  ISSUANCE  PLAN which
   includes an increase in the number of shares of common  stock  available  for
   issuance thereunder from 750,000 to 1,350,000 shares and is further described
   in the Proxy Statement.

                [   ] FOR      [   ] AGAINST      [   ] ABSTAIN


3. APPROVAL OF  AMENDMENT TO THE EMPLOYEE  STOCK  PURCHASE  PLAN to increase the
   number of shares of common  stock  available  for  issuance  thereunder  from
   150,000 to 350,000 shares and is further described in the Proxy Statement.

                [   ] FOR      [   ] AGAINST      [   ] ABSTAIN


4. RATIFICATION  OF  ACCOUNTANTS  proposal  to ratify  the  selection  of Arthur
   Andersen LLP,  independent public accountants,  as auditors of the Company as
   described in the Proxy Statement.

                [   ] FOR      [   ] AGAINST      [   ] ABSTAIN

<PAGE>
5. IN THEIR  DISCRETION  UPON SUCH OTHER MATTERS AS MAY PROPERLY COME BEFORE THE
   MEETING.

UNLESS  OTHERWISE  SPECIFIED,  THIS PROXY WILL BE VOTED FOR THE  ELECTION OF THE
PERSONS NOMINATED BY MANAGEMENT AS DIRECTORS, FOR PROPOSAL 2, FOR PROPOSAL 3 AND
FOR PROPOSAL 4.
 


          Please be sure to sign and date this Proxy in the box below.

                    ________________________________________
                                      Date

                    ________________________________________
                             Stockholder sign above

                    ________________________________________
                          Co-holder (if any) sign above

    Detach above card, sign, date and mail in postage paid envelope provided.

                                  EXOGEN, INC.

Please date and sign exactly as your name appears on this proxy card.  If shares
are held  jointly,  each  stockholder  should sign.  Executors,  administrators,
trustees,  etc. should use full title and, if more than one, all should sign. If
the  stockholder  is a  corporation,  please  sign  full  corporate  name  by an
authorized  officer.  If the  stockholder  is a  partnership,  please  sign full
partnership name by an authorized person.

                               PLEASE ACT PROMPTLY
                     SIGN, DATE & MAIL YOUR PROXY CARD TODAY

<PAGE>

                                  APPENDIX A-2

                                  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.
<PAGE>
                  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
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.
<PAGE>
                  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.
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
<PAGE>
                                (ii) permit the option to be  exercised,  during
         the applicable  post-Service  exercise period, not only with respect to
         the number of vested  shares of Common  Stock for which such  option is
         exercisable at the time of the Optionee's cessation of Service but also
         with  respect  to one or more  additional  installments  in  which  the
         Optionee would have vested 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
automatically  terminate  and the  shares  of  Common  Stock  subject  to  those
<PAGE>
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
         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
<PAGE>
         (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.
<PAGE>
                           2. Any new,  substituted or additional  securities or
other  property  (including  money paid other than as a regular  cash  dividend)
which  the  Participant  may  have the  right to  receive  with  respect  to the
Participant's  unvested  shares of Common Stock by reason of any stock dividend,
stock  split,  recapitalization,  combination  of shares,  exchange of shares or
other change  affecting  the  outstanding  Common  Stock as a class  without the
Corporation's  receipt of consideration  shall be issued subject to (i) the same
vesting requirements  applicable to the Participant's  unvested shares of Common
Stock and (ii) such escrow  arrangements  as the Plan  Administrator  shall deem
appropriate.

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

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

      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
exercisable  for all of the shares of Common  Stock at the time  subject to such
<PAGE>
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)
eliminate 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.
<PAGE>
                  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
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:
<PAGE>
                         (i)  such   individual's   involuntary   dismissal   or
         discharge by the Corporation for reasons other than Misconduct, or

                         (ii) such individual's  voluntary resignation following
         (A) a  change  in  his or  her  position  with  the  Corporation  which
         materially reduces his or her 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
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.
<PAGE>
         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.
<PAGE>
                                  APPENDIX A-3
                                                                    
                                  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.
<PAGE>
                  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.

                  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
<PAGE>
         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
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
<PAGE>
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.

                  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
<PAGE>
         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.

                                  (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.
<PAGE>
                  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.

     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
<PAGE>
Common  Stock is  listed  for  trading  and all  other  applicable  requirements
established by law or regulation.  In the event such stockholder approval is not
obtained,  or such  compliance is not effected,  within twelve (12) months after
the date on which the Plan is adopted by the Board, the Plan shall terminate and
have no further force or effect and all sums collected from Participants  during
the initial offering period hereunder shall be refunded.

                  B.  Unless  sooner  terminated  by the  Board,  the Plan shall
terminate upon the earliest of (i) the last business day in 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>



                                   Schedule A
                                   ----------

                          Corporations Participating in
                          Employee Stock Purchase Plan
                            As of the Effective Time
                            ------------------------


                                  Exogen, Inc.




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

                  K. Fair Market Value per share of Common Stock on any relevant
date shall be determined in accordance with the following provisions:

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

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

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

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

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

                  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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