As filed with the Securities and Exchange Commission on September 8, 1997
                                                  Registration No. 333-_________
================================================================================
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

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

                         Advanced Polymer Systems, Inc.
             ------------------------------------------------------
             (Exact Name of Registrant as Specified in Its Charter)

         Delaware                                           94-2875566
         --------                                           ----------
(State or Other Jurisdiction of                          (I.R.S. Employer
 Incorporation or Organization)                          Identification No.)

                3696 Haven Avenue, Redwood City, California 94063
             ------------------------------------------------------
                    (Address of Principal Executive Offices)


                        1997 Employee Stock Purchase Plan
                    -----------------------------------------
                            (Full Title of the Plan)

                             Michael P.J. O'Connell
                             Chief Financial Officer
                         Advanced Polymer Systems, Inc.
                                3696 Haven Avenue
                         Redwood City, California 94063
                    -----------------------------------------
                     (Name and Address of Agent For Service)

                                 (415) 366-2626
                    -----------------------------------------
          (Telephone Number, Including Area Code, of Agent For Service)

                                    Copy to:
                             Richard A. Peers, Esq.
                         Heller Ehrman White & McAuliffe
                              525 University Avenue
                        Palo Alto, California 94301-1908
                                 (415) 324-7000
                                 --------------


                         CALCULATION OF REGISTRATION FEE
==================================================================================================================== Title of Securities Amount to be Proposed Maximum Proposed Maximum Amount of to be Registered Registered Offering Price Aggregate Offering Registration per Share (1) Price Fee - -------------------------------------------------------------------------------------------------------------------- Common Stock, par value $0.01 400,000 $7.50 $3,000,000 $909 ==================================================================================================================== (1) Estimated solely for the purpose of computing the amount of registration fee pursuant to Rule 457(c) under the Securities Act, as amended, based on the average of the high and low prices of the Registrant's Common Stock reported on the Nasdaq National Market on September 3, 1997.
PART II INFORMATION REQUIRED IN THE REGISTRATION STATEMENT Item 3. Incorporation of Documents by Reference The following documents filed or to be filed with the Securities and Exchange Commission (the "Commission") by the Registrant are incorporated by reference in this Registration Statement: (a) The Registrant's Annual Report on Form 10-K for the fiscal year ended December 31, 1996; (b) The Registrant's Quarterly Reports on Form 10-Q for the fiscal quarters ended June 30, 1997 and March 31, 1997; (c) The description of the Registrant's Common Stock contained in the registration statement on Form 8-A filed with the Commission on August 7, 1987 pursuant to Section 12 of the Exchange Act of 1934, as amended (the "Exchange Act"), and the description of the Registrant's Preferred Share Purchase Rights contained in the registration statement on Form 8-A filed with the Commission on September 6, 1996 pursuant to Section 12 of the Exchange Act; and (d) All documents subsequently filed by the Registrant pursuant to Sections 13(a), 13(c), 14 and 15(d) of the Exchange Act, prior to the filing of a post-effective amendment which indicates that all securities offered hereby have been sold or which deregisters all securities then remaining unsold. Item 6. Indemnification of Directors and Officers The registrant has the power to indemnify its officers and directors against liability for certain acts pursuant to Section 145 of the General Corporation Law of the State of Delaware. Section B of Article VI of the Registrant's Certificate of Incorporation provides: "(1) Right to Indemnification. Each person who was or is made a party or is threatened to be made a party to or is involved in any action, suit or proceeding, whether civil, criminal, administrative or investigative (hereinafter a "proceeding"), by reason of the fact that he or she, or a person of whom he or she is the legal representative, is or was a director or officer, of the Corporation or is or was serving at the request of the Corporation, as a director, officer, employee or agent of another corporation or of a partnership, joint venture, trust or other enterprise, including service with respect to employee benefit plans, whether the basis of such proceeding is alleged action in an official capacity as a director, officer, employee or agent or in any other capacity while serving as a director, officer, employee or agent, shall be indemnified and held harmless by the Corporation to the fullest extent authorized by the General Corporation Law of the State of Delaware, as the same exists or may hereafter be amended (but, in the case of any such amendment, only to the extent that such amendment permits the Corporation to provide broader indemnification rights than said law permitted the Corporation to provide prior to such amendment), against all expense, liability and loss (including attorneys' fees, judgments, fines, ERISA excise taxes or penalties and amounts paid or to be paid in settlement) reasonably incurred or suffered by such person in connection therewith and such indemnification shall continue as to a person who has ceased to be a director, officer, employee or agent and shall inure to the benefit of his or her heirs, executors and administrators; provided, II-1 however, that, the Corporation shall indemnify any such person seeking indemnification in connection with a proceeding (or part thereof) initiated by such person only if such proceeding (or part thereof) was authorized by the board of directors of the Corporation. The right to indemnification conferred in this Section B shall be a contract right and shall include the right to be paid by the Corporation the expenses incurred in defending any such proceeding in advance of its final disposition; provided, however, that, if the General Corporation Law of the State of Delaware requires, the payment of such expenses incurred by a director or officer in his or her capacity as a director or officer (and not in any other capacity in which service was or is rendered by such person while a director or officer, including, without limitation, service to an employee benefit plan) in advance of the final disposition of a proceeding, shall be made only upon delivery to the Corporation of an undertaking, by or on behalf of such director or officer, to repay all amounts so advanced if it shall ultimately be determined that such director or officer is not entitled to be indemnified under this Section or otherwise. The Corporation may, by action of its Board of Directors, provide indemnification to employees and agents of the Corporation with the same scope and effect as the foregoing indemnification of directors and officers. (2) Non-Exclusivity of Rights. The right to indemnification and the payment of expenses incurred in defending a proceeding in advance of its final disposition conferred in this Section B shall not be exclusive of any other rights which any person may have or hereafter acquire under any statute, provisions of this Certificate of Incorporation, Bylaw, agreement, vote of stockholders or disinterested directors or otherwise. (3) Insurance. The Corporation may maintain insurance, at its expense, to protect itself and any director, officer, employee or agent of the Corporation or another corporation, partnership, joint venture, trust or other enterprise against any such expense, liability or loss, whether or not the Corporation would have the power to indemnify such person against such expense, liability or loss under Delaware General Corporation Law." Registrant maintains directors' and officers' liability insurance in the amount of $5,000,000 which covers civil liabilities. Such insurance helps the Registrant to attract qualified officers and directors, by providing a means for the Company to pay the costs and expenses involved in the event civil litigation is brought against of one of the Registrant's officers or directors. Item 8. Exhibits 5 Opinion of Heller Ehrman White & McAuliffe 23.1 Consent of KPMG Peat Marwick LLP 23.2 Consent of Heller Ehrman White & McAuliffe (filed as part of Exhibit 5) 24.1 Power of Attorney (see page II-4) 99.1 1997 Employee Stock Purchase Plan II-2 Item 9. Undertakings A. The undersigned Registrant hereby undertakes: (1) To file, during any period in which offers or sales are being made, a post-effective amendment to this Registration Statement; (i) To include any prospectus required by Section 10(a)(3) of the Securities Act of 1933, as amended (the "Securities Act"); (ii) To reflect in the prospectus any facts or events arising after the effective date of the Registration Statement (or the most recent post-effective amendment thereof) which, individually or in the aggregate, represent a fundamental change in the information set forth in the Registration Statement; (iii) To include any material information with respect to the plan of distribution not previously disclosed in the Registration Statement or any material change to such information in the Registration Statement; provided, however, that paragraphs A(1)(i) and A(1)(ii) do not apply if the information required to be included in a post-effective amendment by those paragraphs is contained in periodic reports filed by the Registrant pursuant to Section 13 or 15(d) of the Exchange Act that are incorporated by reference in the Registration Statement. (2) That, for the purpose of determining any liability under the Securities Act, each such post-effective amendment shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof. (3) To remove from registration by means of a post-effective amendment any of the securities being registered which remain unsold at the termination of the offering. B. The undersigned Registrant hereby undertakes that, for purposes of determining liability under the Securities Act, each filing of the registrant's annual report pursuant to Section 13(a) or 15(d) of the Exchange Act that is incorporated by reference in the Registration Statement shall be deemed a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof. C. Insofar as indemnification for liabilities arising under the Securities Act may be permitted to directors, officers and controlling persons of the registrant pursuant to the foregoing provisions, or otherwise, the registrant has been advised that in the opinion of the Securities and Exchange Commission such indemnification is against public policy as expressed in the Securities Act and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the registrant of expenses incurred or paid by a director, officer or controlling person of the registrant in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling person in connection with the securities being registered, the registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed in the Securities Act and will be governed by the final adjudication of such issue. II-3 SIGNATURES Pursuant to the requirements of the Securities Act, the Registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Redwood City, State of California, on this 8th day of September, 1997. ADVANCED POLYMER SYSTEMS, INC. By:/s/ Michael P.J. O'Connell -------------------------- Michael P.J. O'Connell Chief Financial Officer POWER OF ATTORNEY TO SIGN AMENDMENTS KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below does hereby constitute and appoint John J. Meakem, Jr. and Michael P.J. O'Connell, or either of them, with full power of substitution, such person's true and lawful attorneys-in-fact and agents for such person in such person's name, place and stead, in any and all capacities, to sign any or all amendments (including post-effective amendments) to this Registration Statement on Form S-8 and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-fact and agents full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises in order to effectuate the same as fully, to all intents and purposes, as he or such person might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents may lawfully do or cause to be done by virtue hereof. Pursuant to the requirements of the Securities Act, this Registration Statement on Form S-8 has been signed by the following persons in the capacities and on the dates indicated. /s/ John J. Meakem, Jr. Chairman of the Board and September 8, 1997 - ---------------------------- President (Principal John J. Meakem, Jr. Executive Officer) /s/ Michael P.J. O'Connell Chief Financial Officer September 8, 1997 - ---------------------------- (Principal Financial and Michael P.J. O'Connell Accounting Officer) /s/ Carl Ehmann Director September 8, 1997 - ---------------------------- Carl Ehmann II-4 /s/ Jorge Heller Director September 8, 1997 - ---------------------------- Jorge Heller /s/ Peter Riepenhausen Director September 8, 1997 - ---------------------------- Peter Riepenhausen /s/ Toby Rosenblatt Director September 8, 1997 - ---------------------------- Toby Rosenblatt /s/ Gregory H. Turnbull Director September 8, 1997 - ---------------------------- Gregory H. Turnbull /s/ C. Anthony Wainwright Director September 8, 1997 - ---------------------------- C. Anthony Wainwright /s/ Dennis Winger Director September 8, 1997 - ---------------------------- Dennis Winger II-5 INDEX TO EXHIBITS Sequentially Item No. Description of Item Numbered Page 5 Opinion of Heller Ehrman White & McAuliffe ......... 23.1 Consent of KPMG Peat Marwick LLP ................... 23.2 Consent of Heller Ehrman White & McAuliffe (filed as part of Exhibit 5) ....................... 24.1 Power of Attorney (see page II-4) .................. 99.1 1997 Employee Stock Purchase Plan .................. 6
                               September 8, 1997


                                                                      10008-0006

Advanced Polymer Systems, Inc.
3696 Haven Avenue
Redwood City, California 94063


                       Registration Statement on Form S-8


Ladies and Gentlemen:

         We have acted as counsel to Advanced Polymer Systems,  Inc., a Delaware
corporation  (the "Company"),  in connection with the Registration  Statement on
Form S-8 (the "Registration  Statement") which the Company proposes to file with
the Securities  and Exchange  Commission on September 8, 1997 for the purpose of
registering under the Securities Act of 1933, as amended,  400,000 shares of its
Common Stock,  par value $.01 (the "Shares").  The Shares are issuable under the
Company's 1997 Stock Purchase Plan (the "Plan"}.

         We  have  assumed  the  authenticity  of  all  records,  documents  and
instruments submitted to us as originals, the genuineness of all signatures, the
legal  capacity of natural  persons and the  conformity  to the originals of all
records, documents and instruments submitted to us as copies.

         In rendering  our opinion,  we have  examined  the  following  records,
documents and instruments:

         (a)  The Certificate of Incorporation of the Company,  certified by the
              Delaware Secretaty of State as of September 5, 1997, and certified
              to us by an officer of the Company as being  complete  and in full
              force as of the date of this opinion;

         (b)  The  Bylaws of the  Company  certified  to us by an officer of the
              Company as being  complete  and in full force and effect as of the
              date of this opinion;

         (c)  A certificate  of an officer of the Company (i) attaching  records
              certified  to us as  consituting  all records of  proceedings  and
              actions  of  the  Board  of  Directors,  including  any  committee
              thereof,  and  stockholders of the Company relating to the Shares,
              and the Registration  Ststement, and (ii) certifying as to certain
              factual matters;

Advanced Polymer Systems, Inc.
September 8, 1997                                                         Page 2


         (d)  The Registration Statement;

         (d)  The Plan; and

         (e)  A letter from Boston  Equiserve,  the  Company's  transfer  agent,
              dated  September  5,  1997,  as to the  number  of  shares  of the
              Company's Common Stock that were outstanding on September 4, 1997.

         This  opinion  is limited to the  federal  law of the United  States of
America  and the  General  Corporation  Law of the  State  of  Delaware,  and we
disclaim  any  opinion  as to the laws of any  other  jurisdiction.  We  further
disclaim any opinion as to any other statute, rule, regulation, ordinance, order
or  other  promulgation  of any  other  jurisdiction  or any  regional  or local
governmental body or as to any related judicial or administrative opinion.

         Based upon the foregoing and our  examination  of such questions of law
as we have deemed necessary or appropriate for the purpose of this opinion,  and
assuming  that (i) the  Registration  Statement  becomes and  remains  effective
during  the  period  when the  Shares  are  offered  and  issued,  (ii) the full
consideration  stated  in the  Plan  is  paid  for  each  Share  and  that  such
consideration  in respect of each Share includes payment of cash or other lawful
consideration  at  least  equal  to the par  value  thereof,  (iii)  appropriate
certificates  evidencing  the Shares are executed and  delivered by the Company,
and (iv) all  applicable  securities  laws are complied  with, it is our opinion
that when issued and sold by the Company,  after payment therefore in the manner
provided in the Plan and the Registration Statement,  the Shares will be legally
issued, fully paid and nonassessable.

         This  opinion is rendered to you in  connection  with the  Registration
Statement and is solely for your benefit. This opinion may not be relied upon by
you for any other purpose, or relied upon by any other person, firm, corporation
or other entity for any purpose,  without our prior written consent. We disclaim
any  obligation to advise you of any change of law that occurs,  or any facts of
which we may become aware, after the date of this opinion.

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

                               Very truly yours,


                               /s/ HELLER EHRMAN WHITE & MCAULIFFE


The Board of Directors
Advanced Polymer Systems, Inc.:


We consent to the use of our report incorporated herein by reference.


                                                KPMG Peat Marwick LLP


San Francisco, California
September 4, 1997


                         ADVANCED POLYMER SYSTEMS, INC. 

                        1997 EMPLOYEE STOCK PURCHASE PLAN


         1.       PURPOSE.  This Advanced  Polymer  Systems,  Inc. 1997 Employee
Stock  Purchase Plan is designed to encourage  and assist  employees of Advanced
Polymer  Systems,  Inc.  and  participating  subsidiaries  to  acquire an equity
interest in the Company through the purchase of shares of Company common stock.

         2.       DEFINITIONS.  As used herein, the following  definitions shall
apply:

                  (a) "Administrator" shall mean the entity, either the Board or
the committee of the Board, responsible for administering this Plan, as provided
in Section 3.

                  (b) "Board"  shall mean the Board of Directors of the Company,
as constituted from time to time.

                  (c) "Code"  shall mean the Internal  Revenue Code of 1986,  as
amended from time to time, and any successor statute.

                  (d) "Company"  shall mean Advanced  Polymer  Systems,  Inc., a
Delaware corporation, and Participating Subsidiaries.

                  (e)  "Common  Stock"  shall  mean the Common  Stock,  $.01 par
value, of the Company.

                  (f) "Employee" shall mean any individual who is an employee of
the Company or a Participating  Subsidiary within the meaning of Section 3401(c)
of the Code and the Treasury Regulations thereunder.

                  (g)  "Enrollment  Date"  shall have the  meaning  set forth in
Section 6.

                  (h) "Fair market  value"  means as of any given date:  (i) the
closing price of the Common Stock on the Nasdaq  National  Market as reported in
the Wall Street Journal;  or (ii) if the Common Stock is no longer quoted on the
Nasdaq National Market, but is listed on an established stock exchange or quoted
on any other established interdealer quotation system, the closing price for the
Common Stock on such exchange or system, as reported in the Wall Street Journal;
or (iii) in the absence of an established  market for the Common Stock, the fair
market  value of the Common Stock as  determined  by the  Administrator  in good
faith.

                  (i) "Lower Price  Enrollment  Date" shall have the meaning set
forth in Section 6.

                  (j)  "Option  Period"  shall  have the  meaning  set  forth in
Section 7(b).



                  (k)  "Participating  Subsidiary" shall mean a Subsidiary which
has been designated by the Administrator as covered by the Plan.

                  (l) "Plan" shall mean this Advanced Polymer Systems, Inc. 1997
Employee Stock Purchase Plan, as it may be amended from time to time.

                  (m)  "Purchase  Date"  shall  have the  meaning  set  forth in
Section 9(a).

                  (n) "Section" unless the context clearly indicates  otherwise,
shall refer to a Section of this Plan.

                  (o) "Subsidiary" shall mean a "subsidiary  corporation" of the
Company, whether now or hereafter existing, within the meaning of Section 424(f)
of the Code, but only for so long as it is a "subsidiary corporation."

                  (p)  "Trading  Day"  means  any day on which  regular  trading
occurs on any  established  stock  exchange or market system on which the Common
Stock is traded.

         3.       ADMINISTRATION.

                  (a) Administrator. The Plan shall be administered by the Board
or, upon  delegation by the Board,  by a committee of the Board (in either case,
the  "Administrator").  In connection with the  administration  of the Plan, the
Administrator  shall have the powers possessed by the Board.  The  Administrator
may act only by a  majority  of its  members.  The  Administrator  may  delegate
administrative  duties to such  employees of the Company as it deems proper,  so
long as such  delegation  is not  otherwise  prohibited  by Rule 16b-3 under the
Securities  Exchange Act of 1934, as amended, or other applicable law. The Board
at any time may terminate the authority  delegated to any committee of the Board
pursuant to this Section 3(a) and revest in the Board the  administration of the
Plan.

                  (b) Administrator  Determinations  Binding.  The Administrator
may adopt,  alter and repeal  administrative  rules,  guidelines  and  practices
governing the Plan and the options  granted under it as it shall deem  advisable
from time to time,  may interpret  the terms and  provisions of the Plan and the
Options granted under it, may correct any defect,  omission or  inconsistency in
the Plan or in any Option; and may otherwise supervise the administration of the
Plan and the Options granted under it. The  Administrator  may establish,  under
guidelines from the Board, limits on the number of shares which may be purchased
by each  participant  on an annual or other  periodic  basis or on the number of
shares which may be purchased on any Purchase  Date.  All decisions  made by the
Administrator  under the Plan  shall be binding on all  persons,  including  the
Company and all participants in the Plan. No member of the Administrator shall

                                       -2-


be liable  for any action  that he or she has in good  faith  taken or failed to
take with respect to this Plan.

         4.       NUMBER OF SHARES.

                  (a) The Company has  reserved  for sale under the Plan 400,000
shares of Common Stock. Shares sold under the Plan may be newly issued shares or
shares  reacquired in private  transactions  or open market  purchases,  but all
shares sold under the Plan,  regardless of source,  shall be counted against the
400,000 share  limitation.  If at any Purchase Date, the shares  available under
the Plan are less than the number all  participants  would otherwise be entitled
to  purchase  on such  date,  purchases  shall  be  reduced  proportionately  to
eliminate  the  deficit.  If, at any  Purchase  Date,  the  shares  which may be
purchased by a participant are restricted on account of a limit on the aggregate
shares which may be purchased per employee, purchases under each option shall be
reduced  proportionately.  Any funds that  cannot be applied to the  purchase of
shares due to such  reductions  shall be  refunded  to  participants  as soon as
administratively feasible.

                  (b) In the  event  of  any  reorganization,  recapitalization,
stock split, reverse stock split, stock dividend, combination of shares, merger,
consolidation,  offering  of  rights,  or other  similar  change in the  capital
structure  of the  Company,  the Board may make such  adjustment,  if any, as it
deems  appropriate  in the  number,  kind,  and  purchase  price  of the  shares
available  for  purchase  under  the Plan and in the  maximum  number  of shares
subject to any option under the Plan.

          5.      ELIGIBILITY REQUIREMENTS.

                  (a) Each  Employee of the Company,  except those  described in
the  next  paragraph,  shall  become  eligible  to  participate  in the  Plan in
accordance  with  Section  6 on  the  first  Enrollment  Date  on  or  following
commencement of his or her employment by the Company or following such period of
employment  as  is  designated   by  the   Administrator   from  time  to  time.
Participation in the Plan is entirely voluntary.

                  (b) The following Employees are not eligible to participate in
the Plan:

                           (i) Employees who would,  immediately upon enrollment
in the Plan,  own directly or  indirectly,  or hold options or rights to acquire
stock  possessing,  five percent (5%) or more of the total combined voting power
or  value  of all  classes  of stock of the  Company  or any  subsidiary  of the
Company; and

                           (ii)  Employees who are  customarily  employed by the
Company  fewer than  twenty (20) hours per week or fewer than five (5) months in
any calendar year.


                                       -3-


         6.       ENROLLMENT.  Any eligible  employee may enroll or re-enroll in
the Plan  each year as of the close of the  first  trading  day of:  (a) May and
November of each such year; or (b) such other days as may be  established by the
Board  from  time to time (the  "Enrollment  Dates");  provided,  that the first
Enrollment  Date  shall be  April 30,  1997.  In order to  enroll,  an  eligible
employee must complete,  sign, and submit to the Company an enrollment form. Any
enrollment  form received by the Company by the 20th day of the month  preceding
an Enrollment  Date (or by the  Enrollment  Date in the case of employees  hired
after such 20th day or in the case of the first Enrollment  Date), or such other
date  established by the  Administrator  from time to time, will be effective on
that Enrollment  Date. In addition,  the  Administrator  may re-enroll  existing
participants  in the Plan on any  Enrollment  Date (the "Lower Price  Enrollment
Date") on which the fair market value of the Common Stock is lower than the fair
market value on such participant's  existing  Enrollment Date. A participant may
elect not to  re-enroll  on a Lower  Price  Enrollment  Date by filing a written
statement  with the Company  declaring  such  election  prior to the Lower Price
Enrollment Date.

          7.      GRANT OF OPTION ENROLLMENT.

                  (a) Enrollment or  re-enrollment  by a participant in the Plan
on an  Enrollment  Date  will  constitute  the  grant  by  the  Company  to  the
participant  of an option to  purchase  shares of Common  Stock from the Company
under the Plan. Any  participant  whose option expires and who has not withdrawn
from the Plan will  automatically  be  re-enrolled in the Plan and granted a new
option on the Enrollment Date immediately following the date on which the option
expires.

                  (b) Except as provided  in Section  10,  each  option  granted
under the Plan shall have the following terms:

                           (i) the  option  will  have a term of not  more  than
twenty-four  (24) months or such shorter  option period as may be established by
the  Board  from  time  to  time  (the  "Option  Period").  Notwithstanding  the
foregoing,  however,  whether or not all shares have been purchased  thereunder,
the option  will expire on the  earlier to occur of: (A) the  completion  of the
purchase of shares on the last Purchase Date occurring  within  twenty-four (24)
months after the Enrollment Date for such option,  or such shorter option period
as may be established by the Board before an Enrollment  Date for all options to
be granted on such date; or (B) the date on which the  employee's  participation
in the Plan terminates for any reason;

                           (ii)  payment for shares  purchased  under the option
will be made only through payroll withholding in accordance with Section 8;

                           (iii)  purchase of shares upon exercise of the option
will be effected  only on the Purchase  Dates  established  in  accordance  with
Section 9;

                                       -4-


                           (iv) the option,  if not altered,  amended or revoked
by the Company prior to the relevant  Purchase Date, may be accepted only by (x)
there having been withheld from the  compensation  of the employee in accordance
with the terms of the Plan  amounts  sufficient  to  purchase  the Common  Stock
intended to be purchased  under the option,  and (y) the employee being employed
by the Company and not having  withdrawn from the Plan on the relevant  Purchase
Date.

                           (v) the  price per share  under  the  option  will be
determined as provided in Section 9;

                           (vi) the  maximum  number  of  shares  available  for
purchase under an option for each one percent (1%) of compensation designated by
an employee in accordance with Section 8 will,  unless otherwise  established by
the Board before an Enrollment  Date for all options to be granted on such date,
be determined by dividing  $25,000 by the fair market value of a share of Common
Stock on the  Enrollment  Date,  dividing  the result by the  maximum  number of
percentage  points that an employee may  designate  under  Section 8 at the time
such option is  granted,  and  multiplying  the result by the number of calendar
years included in whole or in part in the period from grant to expiration of the
option;

                           (vii)  the  option  (taken  together  with all  other
options then  outstanding  under this and all other similar stock purchase plans
of the Company and any subsidiary of the Company,  collectively  "Options") will
in no event  give the  participant  the right to  purchase  shares at a rate per
calendar  year which  accrues in excess of $25,000 of fair market  value of such
shares,  less the fair market value of any shares accrued and already  purchased
during such year under Options which have expired or  terminated,  determined at
the applicable Enrollment Dates; and

                           (viii) the option will in all  respects be subject to
the terms and conditions of the Plan, as interpreted by the  Administrator  from
time to time.

          8.      PAYROLL AND TAX WITHHOLDING; USE BY COMPANY.

                  (a) Each participant shall elect to have amounts withheld from
his or her compensation  paid by the Company during the Option Period, at a rate
equal to any whole  percentage  up to a maximum of ten  percent  (10%),  or such
lesser  percentage  as the  Board  may  establish  from  time to time  before an
Enrollment  Date.  Compensation  includes  regular salary  payments,  annual and
quarterly  bonuses,  hire-on  bonuses,  cash  recognition  awards,  commissions,
overtime pay, shift premiums,  and elective  contributions by the participant to
qualified  employee  benefit plans,  but excludes all other payments  including,
without limitation,  long-term disability or workers compensation  payments, car
allowances,    employee   referral   bonuses,   relocation   payments,   expense
reimbursements (including but not limited to travel,  entertainment,  and moving
expenses), salary gross-up

                                       -5-


payments,  and non-cash  recognition  awards.  The participant shall designate a
rate of withholding  in his or her enrollment  form and may elect to increase or
decrease  the rate of  contribution  effective  as of any  Enrollment  Date,  by
delivery to the  Company,  not later than ten (10) days  before such  Enrollment
Date, of a written notice indicating the revised withholding rate.

                  (b)  Payroll  withholdings  shall be  credited  to an  account
maintained  for purposes of the Plan on behalf of each  participant,  as soon as
administratively  feasible after the  withholding  occurs.  The Company shall be
entitled  to use the  withholdings  for any  corporate  purpose,  shall  have no
obligation to pay interest on withholdings to any participant,  and shall not be
obligated to segregate withholdings.

                  (c) Upon  disposition  of shares  acquired  by  exercise of an
option, the participant shall pay, or make provision adequate to the Company for
payment of, all federal,  state, and other tax (and similar)  withholdings  that
the Company determines, in its discretion,  are required due to the disposition,
including any such withholding that the Company  determines in its discretion is
necessary  to allow the  Company to claim tax  deductions  or other  benefits in
connection  with  the  disposition.   A  participant  shall  make  such  similar
provisions  for payment  that the Company  determines,  in its  discretion,  are
required  due to the exercise of an option,  including  such  provisions  as are
necessary  to allow the  Company to claim tax  deductions  or other  benefits in
connection with the exercise of the option.

          9.      PURCHASE OF SHARES.

                  (a)  On  the  last  Trading  Day   immediately   preceding  an
Enrollment Date (other than the first Enrollment Date), or on such other days as
may be  established  by the Board from time to time prior to an Enrollment  Date
for all options to be granted on such Enrollment Date (each a "Purchase  Date"),
the Company  shall apply the funds then credited to each  participant's  payroll
withholdings  account to the purchase of whole shares of Common Stock.  The cost
to the participant  for the shares  purchased under any option shall be not less
than eighty-five percent (85%) of the lower of:

                           (i) the fair market  value of the Common Stock on the
Enrollment Date for such option; or

                           (ii) the fair market value of the Common Stock on the
date such option is exercised.

                  (b) Any funds in an amount  less than the cost of one share of
Common Stock left in a participant's  payroll withholdings account on a Purchase
Date  shall be carried  forward  in such  account  for  application  on the next
Purchase Date.

                  (c)  Notwithstanding  the  terms  of  Section  9(a),  no funds
credited to any employee's payroll withholdings account

                                       -6-


shall be used to  purchase  Common  Stock on any date prior to the date that the
Plan has been approved by the  stockholders of the Company,  as noted in Section
21. If such approval is not  forthcoming  within one year from the date that the
Plan was  approved  by the Board of  Directors,  all amounts  withheld  shall be
distributed to the participants as soon as administratively feasible.

         10.      WITHDRAWAL  FROM THE PLAN. A participant may withdraw from the
Plan in full  (but not in part) at any  time,  effective  after  written  notice
thereof is received by the Company.  Unless the Administrator elects to permit a
withdrawing  participant  to invest  funds  credited  to his or her  withholding
account on the Purchase Date  immediately  following  notice of withdrawal,  all
funds  credited  to  a  participant's  payroll  withholdings  account  shall  be
distributed to him or her without  interest  within sixty (60) days after notice
of  withdrawal  is  received  by the  Company.  Any  eligible  employee  who has
withdrawn  from  the  Plan  may  enroll  in the  Plan  again  on any  subsequent
Enrollment Date in accordance with the provisions of Section 6.

         11.      TERMINATION   OF   EMPLOYMENT.   Participation   in  the  Plan
terminates  immediately when a participant  ceases to be employed by the Company
for any reason  whatsoever  (including death or disability) or otherwise becomes
ineligible  to  participate  in the Plan. As soon as  administratively  feasible
after  termination,  the  Company  shall  pay to the  participant  or his or her
beneficiary or legal  representative,  all amounts credited to the participant's
payroll withholdings account; provided, however, that if a participant ceases to
be employed by the Company  because of the  commencement  of  employment  with a
Subsidiary  of the Company that is not a  Participating  Subsidiary,  funds then
credited to such participant's  payroll withholdings account shall be applied to
the purchase of whole shares of Common Stock at the next  Purchase  Date and any
funds remaining after such purchase shall be paid to the participant.

         12.      DESIGNATION OF BENEFICIARY.

                  (a) Each  participant may designate one or more  beneficiaries
in the  event of death  and may,  in his or her  sole  discretion,  change  such
designation at any time. Any such designation shall be effective upon receipt in
written form by the Company and shall  control over any  disposition  by will or
otherwise.

                  (b) As soon as administratively  feasible after the death of a
participant, amounts credited to his or her account shall be paid in cash to the
designated  beneficiaries or, in the absence of a designation,  to the executor,
administrator,  or other legal representative of the participant's  estate. Such
payment shall relieve the Company of further  liability with respect to the Plan
on  account  of the  deceased  participant.  If more  than  one  beneficiary  is
designated, each beneficiary shall

                                       -7-


receive an equal portion of the account unless the participant has given express
contrary written instructions.

         13.      ASSIGNMENT.

                  (a) The  rights of a  participant  under the Plan shall not be
assignable by such participant, by operation of law or otherwise. No participant
may create a lien on any funds,  securities,  rights,  or other property held by
the  Company for the account of the  participant  under the Plan,  except to the
extent that there has been a designation of beneficiaries in accordance with the
Plan, and except to the extent permitted by the laws of descent and distribution
if beneficiaries have not been designated.

                  (b) A  participant's  right to purchase  shares under the Plan
shall be exercisable only during the  participant's  lifetime and only by him or
her,  except that a participant may direct the Company in the enrollment form to
issue share  certificates  to the participant and his or her spouse in community
property,  to the participant  jointly with one or more other persons with right
of survivorship, or to certain forms of trusts approved by the Administrator.

         14.      ADMINISTRATIVE   ASSISTANCE.   If  the  Administrator  in  its
discretion so elects,  it may retain a brokerage firm,  bank, or other financial
institution to assist in the purchase of shares,  delivery of reports,  or other
administrative  aspects  of the  Plan.  If the  Administrator  so  elects,  each
participant  shall  (unless  prohibited  by the laws of the nation of his or her
employment  or  residence)  be  deemed  upon  enrollment  in the  Plan  to  have
authorized  the  establishment  of an  account  on  his or her  behalf  at  such
institution.  Shares purchased by a participant  under the Plan shall be held in
the account in the name in which the share certificate would otherwise be issued
pursuant to Section 13(b).

         15.      COSTS. All costs and expenses  incurred in  administering  the
Plan shall be paid by the  Company,  except  that any stamp  duties or  transfer
taxes  applicable to  participation in the Plan may be charged to the account of
such  participant by the Company.  Any brokerage fees for the purchase of shares
by a participant shall be paid by the Company, but brokerage fees for the resale
of shares by a participant shall be borne by the participant.

         16.      EQUAL RIGHTS AND PRIVILEGES. All eligible employees shall have
equal rights and privileges  with respect to the Plan so that the Plan qualifies
as an "employee  stock  purchase  plan" within the meaning of Section 423 of the
Code and the related  Treasury  Regulations.  Any provision of the Plan which is
inconsistent with Section 423 of the Code shall without further act or amendment
by the  Company or the Board be  reformed  to comply  with the  requirements  of
Section 423. This Section 16 shall take precedence over all other  provisions of
the Plan.


                                       -8-


         17.      APPLICABLE  LAW. The Plan shall be governed by the substantive
laws  (excluding  the  conflict of laws rules) of the State of California.

         18.      MODIFICATION AND TERMINATION.

                  (a) The Board may amend,  alter,  or terminate the Plan at any
time,  including  amendments to outstanding  options. No amendment shall require
stockholder approval, except:

                           (i) for an increase in the number of shares  reserved
for purchase under the Plan;

                           (ii) to the  extent  required  for the Plan to comply
with Section 423 of the Code;

                           (iii) to the  extent  required  by  other  applicable
laws, regulations or rules; or

                           (iv) to the extent the Board otherwise concludes that
stockholder approval is advisable.

                  (b) In the event the Plan is  terminated,  the Board may elect
to terminate all  outstanding  options either  immediately or upon completion of
the purchase of shares on the next Purchase Date, or may elect to permit options
to expire in accordance with their terms (and  participation to continue through
such expiration  dates). If the options are terminated prior to expiration,  all
funds  contributed to the Plan that have not been used to purchase  shares shall
be returned to the participants as soon as administratively feasible.

                  (c) In the  event of the sale of all or  substantially  all of
the assets of the  Company,  or the merger of the Company  with or into  another
corporation,  or the  dissolution  or  liquidation  of the Company,  each option
outstanding  under  the  Plan  shall  be  assumed  by  any  purchaser  of all or
substantially  all of the assets of the Company or by a  successor  by merger to
the Company (or the parent company of such purchaser or successor) in compliance
with Section 424 of the Code, unless otherwise provided by the Board in its sole
discretion,  in which event, a Purchase Date shall occur immediately  before the
effective date of such event.

         19.      RIGHTS AS AN EMPLOYEE.  Nothing in the Plan shall be construed
to give any person the right to remain in the employ of the Company or to affect
the Company's  right to terminate the  employment of any person at any time with
or without cause.

         20.      RIGHTS AS A  SHAREHOLDER;  DELIVERY  OF  CERTIFICATES.  Unless
otherwise determined by the Board,  certificates  evidencing shares purchased on
any Purchase Date shall be delivered to a participant  only if he or she makes a
written  request  to the  Administrator.  Participants  shall be  treated as the
owners of their shares effective as of the Purchase Date.

                                       -9-


         21.      BOARD AND SHAREHOLDER  APPROVAL.  The Plan was approved by the
Board of  Directors  on March 5,  1997,  and by the holders of a majority of the
votes cast at a duly held  shareholders'  meeting on June 18,  1997,  at which a
quorum of the voting power of the Company was represented in person or by proxy.


                                      -10-