IA CORP
S-8, 1997-08-15
PREPACKAGED SOFTWARE
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<PAGE>

As filed with the Securities and Exchange Commission on August 14, 1997

                                                     Registration No. 333-
===============================================================================

                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549

                                ------------- 
 
                                   FORM S-8
 
            REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933
 
                                ------------- 
 
 
                               IA CORPORATION I
            (Exact name of Registrant as specified in its charter)
 
                                ------------- 
 
 
      DELAWARE                                       94-3161772
      --------                                       ----------
(State of incorporation)                 (I.R.S. Employer Identification No.)
 
 
                         1900 Powell Street, Suite 600
                       Emeryville, California 94608-1840
                   (Address of principal executive offices)

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

                                1996 STOCK PLAN
                       1996 EMPLOYEE STOCK PURCHASE PLAN
 
                           (Full title of the Plans)

                                 ------------- 
 
                               DAVID M. WINKLER
                            Chief Financial Officer
                               IA CORPORATION I
                         1900 Powell Street, Suite 600
                       Emeryville, California 94608-1840

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

(Name, address, and telephone number, including area code, of agent for service)
 
                                 ------------- 
 
                                  Copies to:
 
                             BARRY E. TAYLOR, ESQ.
                       WILSON SONSINI GOODRICH & ROSATI
                           PROFESSIONAL CORPORATION
                              650 PAGE MILL ROAD
                           PALO ALTO, CA 94304-1050
                                (415) 493-9300




===============================================================================

<TABLE> 
<CAPTION> 

============================================================================================

                        CALCULATION OF REGISTRATION FEE

============================================================================================
<S>                                   <C>             <C>            <C>        <C> 
 
                                                      Proposed       Proposed    
Title of                                              Maximum        Maximum     
Securities                              Amount        Offering       Aggregate   Amount of
to be                                    to be        Price Per      Offering   Registration
Registered                             Registered      Share          Price         Fee
- --------------------------------------------------------------------------------------------- 
1996 Stock Plan, Common Stock,             
  $0.01 par value....................    700,000     $2.50(1)       $1,750,000      530.30
 
1996 Employee Stock Purchase Plan,         
  Common Stock, $0.01 par value......    400,000     $2.50(2)       $1,000,000      303.03
===============================================================================================
            TOTAL                      1,100,000       ---          $2,750,000     $833.33        
===============================================================================================
</TABLE> 
 
(1)   Estimated in accordance with Rule 457(h) under the Securities Act as 
      to 700,000 shares of Common Stock, solely for the purpose of calculating 
      the registration fee. Because the price at which the options to be 
      granted in the future may be exercised is not currently determinable, 
      the computation is based on the average of the high and low closing 
      prices of the Common Stock as reported on the Nasdaq National Market 
      on August 11, 1997 which average was $2.50.

(2)   Estimated pursuant to Rule 457 solely for the purposes of calculating 
      the registration fee on the basis of 85% of the Market Price.
<PAGE>
 
                                IA CORPORATION I
                       REGISTRATION STATEMENT ON FORM S-8

                                    PART II

                 INFORMATION REQUIRED IN REGISTRATION STATEMENT

Item 3. Incorporation of Documents by Reference
        ---------------------------------------

        There are hereby incorporated by reference in this Registration
Statement the following documents and information heretofore filed with the
Securities and Exchange Commission (the "Commission"):

        (a)  The Company's Annual Report on Form 10-K for the year ended 
December 31, 1996 filed pursuant to Section 13 of the Securities Exchange Act of
1934 (the "Exchange Act").

        (b)  The Company's Quarterly Reports on Form 10-Q for the quarters 
ended March 31, 1997 and June 30, 1997 filed pursuant to Section 13 of the 
Exchange Act.

        (c)  The description of the Registrant's Common Stock contained in the
Registration Statement on Form 8-A filed pursuant to Section 12(g) of the
Exchange Act on October 15, 1996.

        All documents filed by the Registrant pursuant to Sections 13(a), 13(c),
14 and 15(d) of the Exchange Act subsequent to the filing of this Registration
Statement, and prior to the filing of a post-effective amendment which indicates
that all securities offered have been sold or which deregisters all securities
then remaining unsold, shall be deemed to be incorporated by reference in the
Registration Statement and to be part hereof from the date of filing of such
documents.

Item 4. Description of Securities.
        ------------------------- 

        Not applicable.

Item 5. Interests of Named Experts and Counsel.
        -------------------------------------- 

        Not applicable.

Item 6. Indemnification of Directors and Officers.
        ----------------------------------------- 

        The Registrant's Bylaws provide that the Registrant shall indemnify its
directors and officers to the fullest extent permitted by law.  The Registrant
believes that indemnification under its Bylaws covers at least negligence and
gross negligence on the part of indemnified parties.

        The Registrant has entered into agreements to indemnify its directors
and officers, in addition to the indemnification provided for in the
Registrant's Bylaws. These agreements, among other things, indemnify the
Registrant's directors and executive officers for certain expenses (including
attorneys' fees), judgments, fines and settlement amounts incurred by any such
person in any action or proceeding, including any action by or in the right of
the Registrant, arising out of such person's service as a director or executive
officer of the Registrant, any subsidiary of the Registrant or any other company
or enterprise to which the person provides services at the request of the
Registrant.

                                      II-1
<PAGE>
 
        The Registrant has purchased insurance on behalf of any officer or
director for any liability arising out of his or her actions in such capacity.
The Registrant believes that indemnification agreements and insurance are
necessary to attract and retain qualified directors and executive officers.

        At present, there is no pending litigation or proceeding involving any
director, officer, employee or agent of the Registrant where indemnification
will be required or permitted.  The Registrant is not aware of any threatened
litigation or proceeding that might result in a claim for such indemnification.

        See also the undertakings set out in response to Item 9 herein.

Item 7. Exemption from Registration Claimed.
        ----------------------------------- 
 
        Not applicable.



 
Item 8. Exhibits.
        --------

                Exhibit                
                 Number                Description
                -------                -----------
 
                  4.1                   1996 Stock Plan, as amended
 
                  4.2                   1996 Employee Stock Purchase Plan,
                                        as amended
 
                  5.1                   Opinion of Wilson, Sonsini, Goodrich &
                                        Rosati, P.C. as to legality of
                                        securities being registered.

                 23.1                   Consent of Wilson, Sonsini, Goodrich &
                                        Rosati, P.C. (contained in Exhibit 5.1).
 
                 23.2                   Consent of Ernst & Young LLP, 
                                        Independent Auditors.
 
                 24.1                   Power of Attorney (see page II-4).

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 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.

                  (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.

                                      II-2
<PAGE>
 
      (b) The undersigned Registrant hereby undertakes that, for purposes of
determining any liability under the Securities Act, each filing of the
Registrant's annual report pursuant to section 13(a) or section 15(d) of the
Exchange Act (and, where applicable, each filing of an employee benefit plan's
annual report pursuant to Section 15(d) of the Exchange Act) that is
incorporated by reference in the Registration Statement shall be deemed to be a
new registration statement relating to the securities offered therein, and the
offering of such securities at that time shall be deemed to be an 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 Delaware Corporation Law, the Certificate of
Incorporation of the Registrant, the Bylaws of the Registrant, Indemnification
Agreements entered into between the Registrant and its officers and directors,
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
<PAGE>
 
                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, 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 Emeryville, State of California, on this 14th day of
August, 1997.

                                    IA CORPORATION I

                                    By: /s/ Chakravarthi V. Ravi
                                        ----------------------------------------
                                         Chakravarthi V. Ravi
                                         President, Chief Executive Officer and
                                              Chairman of the Board

                               POWER OF ATTORNEY

     KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature
appears below constitutes and appoints, jointly and severally, Chakravarthi V.
Ravi and David M. Winkler, and each one of them, individually and without the
other, his or her attorney-in-fact, each with full power of substitution, for
him or her in any and all capacities, to sign any and all amendments to this
Registration Statement on Form S-8, and to file the same, with exhibits thereto
and other documents in connection therewith, with the Securities and Exchange
Commission, hereby ratifying and confirming all that each of said attorneys-in-
fact, or his or her substitute or substitutes, may do or cause to be done by
virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, this
Registration Statement has been signed below by the following persons in the
capacities and on the dates indicated.
<TABLE>
<CAPTION>
 
Signature                                        Title                            Date
- ---------------------------   --------------------------------------         ----------------
<S>                           <C>                                            <C>
 
/s/ Chakravarthi V. Ravi      President, Chief Executive Officer and         August 14, 1997
- ---------------------------   Chairman of the Board
Chakravarthi V. Ravi         

 
/s/ David M. Winkler          Chief Financial Officer, Vice President        August 14, 1997
- ---------------------------   and Secretary 
David M. Winkler              
 
 
/s/ Henry Kressel             Director                                       August 14, 1997
- ---------------------------  
Henry Kressel
 

/s/ Peter Stalker III         Director                                       August 14, 1997
- ---------------------------  
Peter Stalker III
 

/s/ John Oltman               Director                                       August 14, 1997
- ---------------------------  
John Oltman

 
/s/ Randy Katz                Director                                       August 14, 1997
- ---------------------------  
Randy Katz
</TABLE>

                                      II-4
<PAGE>
 
                               INDEX TO EXHIBITS
<TABLE>
<CAPTION>
 
Exhibit                                                        Sequentially
 Number                         Description                    Numbered Page
- -------      --------------------------------------------      -------------
 
<S>          <C>                                                 <C>
 
4.1          1996 Stock Plan, as amended
 
4.2          1996 Employee Stock Purchase Plan, as amended
 
5.1          Opinion of Wilson Sonsini Goodrich & Rosati,
             P.C.
             as to legality of securities being registered.
 
23.1         Consent of Wilson Sonsini Goodrich & Rosati,
             P.C. (contained in Exhibit 5.1).
 
23.2         Consent of Ernst & Young LLP, Independent 
             Auditors.
 
24.1         Power of Attorney (see page II-4).
</TABLE>

<PAGE>
                                                                     EXHIBIT 4.1

                               IA CORPORATION I
                                1996 STOCK PLAN
                        (AS AMENDED THROUGH JUNE 1997)


     1.   Purposes of the Plan.  The purposes of this Stock Plan are:
          --------------------                                       

          .   to attract and retain the best available personnel for positions
              of substantial responsibility;

          .   to provide additional incentive to Employees and Consultants; and

          .   to promote the success of the Company's business.

     Options granted under the Plan may be Incentive Stock Options or
Nonstatutory Stock Options, as determined by the Administrator at the time of
grant.  Stock Purchase Rights may also be granted under the Plan.

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

          (a)  "Administrator" means the Board or any of its Committees as 
                -------------             
shall be administering the Plan, in accordance with Section 4 of the Plan.

          (b)  "Applicable Laws" means the legal requirements relating to the
                ---------------                                              
administration of stock option plans under U.S. state corporate laws, U.S.
federal and state securities laws, the Code and the applicable laws of any
foreign country or jurisdiction where Options or Stock Purchase Rights are, or
will be, granted under the Plan.

          (c)  "Board" means the Board of Directors of the Company.
                -----                                              

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

          (e)  "Committee"  means a Committee appointed by the Board in
                ---------                                              
accordance with Section 4 of the Plan.

          (f)  "Common Stock" means the Common Stock of the Company.
                ------------                                        

          (g)  "Company" means IA Corporation I, a Delaware corporation.
                -------                                                 

          (h)  "Consultant" means any person, including an advisor, engaged by 
                ----------              
the Company or a Parent or Subsidiary to render services and who is compensated
for such services. The term "Consultant" shall not include Directors who are
paid only a director's fee by the Company or who are not compensated by the
Company for their services as Directors.
<PAGE>
 
          (i)  "Continuous Status as an Employee or Consultant" means that the
                ----------------------------------------------                
employment or consulting relationship with the Company, any Parent, or
Subsidiary, is not interrupted or terminated. Continuous Status as an Employee
or Consultant shall not be considered interrupted in the case of (i) any leave
of absence approved by the Company or (ii) transfers between locations of the
Company or between the Company, its Parent, any Subsidiary, or any successor. A
leave of absence approved by the Company shall include sick leave, military
leave, or any other personal leave approved by an authorized representative of
the Company. For purposes of Incentive Stock Options, no such leave may exceed
ninety (90) days, unless reemployment upon expiration of such leave is
guaranteed by statute or contract. If reemployment upon expiration of a leave of
absence approved by the Company is not so guaranteed, on the one hundred eighty-
first (181st) day of such leave any Incentive Stock Option held by the Optionee
shall cease to be treated as an Incentive Stock Option and shall be treated for
tax purposes as a Nonstatutory Stock Option.

          (j)  "Director" means a member of the Board.
                --------                              

          (k)  "Disability" means total and permanent disability as defined in
                ----------                                                    
Section 22(e)(3) of the Code.

          (l)  "Employee" means any person, including Officers and Directors,
                --------                                                     
employed by the Company or any Parent or Subsidiary of the Company.  Neither
service as a Director nor payment of a director's fee by the Company shall be
sufficient to constitute "employment" by the Company.

          (m)  "Exchange Act" means the Securities Exchange Act of 1934, as
                ------------                                               
amended.

          (n)  "Fair Market Value" means, as of any date, the value of Common
                -----------------                                            
Stock determined as follows:

               (i)    If the Common Stock is listed on any established stock 
exchange or a national market system, including without limitation the Nasdaq
National Market or The Nasdaq SmallCap Market of The Nasdaq Stock Market, its
Fair Market Value shall be the closing sales price for such stock (or the
closing bid, if no sales were reported) as quoted on such exchange or system for
the last market trading day prior to the time of determination, as reported in
The Wall Street Journal or such other source as the Administrator deems
- -----------------------
reliable; or

               (ii)   If the Common Stock is regularly quoted by a recognized 
securities dealer but selling prices are not reported, the Fair Market Value of
a Share of Common Stock shall be the mean between the high bid and low asked
prices for the Common Stock on the last market trading day prior to the day of
determination, as reported in The Wall Street Journal or such other source as
                              -----------------------
the Administrator deems reliable; or

               (iii)  In the absence of an established market for the Common 
Stock, the Fair Market Value shall be determined in good faith by the
Administrator.

                                      -2-
<PAGE>
 
          (o)  "Incentive Stock Option" means an Option intended to qualify as 
                ----------------------                        
an incentive stock option within the meaning of Section 422 of the Code and the
regulations promulgated thereunder.

          (p)  "Nonstatutory Stock Option" means an Option not intended to
                -------------------------                                 
qualify as an Incentive Stock Option.

          (q)  "Notice of Grant" means a written notice evidencing certain 
                ---------------          
terms and conditions of an individual Option or Stock Purchase Right grant. The
Notice of Grant is part of the Option Agreement.

          (r)  "Officer" means a person who is an officer of the Company within 
                -------                  
the meaning of Section 16 of the Exchange Act and the rules and regulations
promulgated thereunder.

          (s)  "Option" means a stock option granted pursuant to the Plan.
                ------                                                    

          (t)  "Option Agreement" means a written agreement between the Company 
                ----------------             
and an Optionee evidencing the terms and conditions of an individual Option
grant. The Option Agreement is subject to the terms and conditions of the Plan.

          (u)  "Option Exchange Program" means a program whereby outstanding 
                -----------------------          
options are surrendered in exchange for options with a lower exercise price.

          (v)  "Optioned Stock" means the Common Stock subject to an Option or
                --------------                                                
Stock Purchase Right.

          (w)  "Optionee" means an Employee or Consultant who holds an
                --------                                              
outstanding Option or Stock Purchase Right.

          (x)  "Parent" means a "parent corporation", whether now or hereafter
                ------                                                        
existing, as defined in Section 424(e) of the Code.

          (y)  "Plan" means this 1996 Stock Plan.
                ----                             

          (z)  "Restricted Stock" means shares of Common Stock acquired 
                ----------------                
pursuant to a grant of Stock Purchase Rights under Section 11 below.

          (aa) "Restricted Stock Purchase Agreement" means a written agreement
                -----------------------------------                           
between the Company and the Optionee evidencing the terms and restrictions
applying to stock purchased under a Stock Purchase Right.  The Restricted Stock
Purchase Agreement is subject to the terms and conditions of the Plan and the
Notice of Grant.

                                      -3-
<PAGE>
 
          (bb) "Rule 16b-3" means Rule 16b-3 of the Exchange Act or any 
                ----------                               
successor to Rule 16b-3, as in effect when discretion is being exercised with
respect to the Plan.

          (cc) "Section 16(b)" means Section 16(b) of the Securities Exchange 
                -------------                 
Act of 1934, as amended.

          (dd) "Share" means a share of the Common Stock, as adjusted in
                -----                                                   
accordance with Section 13 of the Plan.

          (ee) "Stock Purchase Right" means the right to purchase Common Stock
                --------------------                                          
pursuant to Section 11 of the Plan, as evidenced by a Notice of Grant.

          (ff) "Subsidiary" means a "subsidiary corporation", whether now or
                ----------                                                  
hereafter existing, as defined in Section 424(f) of the Code.

     3.   Stock Subject to the Plan.  Subject to the provisions of Section 13 of
          -------------------------                                             
the Plan, the maximum aggregate number of Shares which may be optioned and sold
under the Plan is seven hundred thousand (700,000) Shares.  The Shares may be
authorized, but unissued, or reacquired Common Stock.

          If an Option or Stock Purchase Right expires or becomes unexercisable
without having been exercised in full, or is surrendered pursuant to an Option
Exchange Program, the unpurchased Shares which were subject thereto shall become
available for future grant or sale under the Plan (unless the Plan has
terminated).

     4.   Administration of the Plan.
          -------------------------- 

          (a)  Procedure.
               --------- 

               (i)   Multiple Administrative Bodies.  If permitted by Rule 
                     ------------------------------    
16b-3, the Plan may be administered by different bodies with respect to
Directors, Officers who are not Directors, and Employees who are neither
Directors nor Officers.

               (ii)  Administration With Respect to Directors and Officers 
                     -----------------------------------------------------
Subject to Section 16(b).  With respect to Option or Stock Purchase Right 
- ------------------------ 
grants made to Employees who are also Officers or Directors subject to Section
16(b) of the Exchange Act, the Plan shall be administered by (A) the Board, if
the Board may administer the Plan in a manner complying with the rules under
Rule 16b-3 relating to the disinterested administration of employee benefit
plans under which Section 16(b) exempt discretionary grants and awards of equity
securities are to be made, or (B) a committee designated by the Board to
administer the Plan, which committee shall be constituted to comply with the
rules under Rule 16b-3 relating to the disinterested administration of employee
benefit plans under which Section 16(b) exempt discretionary grants and awards
of equity securities are to be made. Once appointed, such Committee shall
continue to serve in its designated capacity 

                                      -4-
<PAGE>
 
until otherwise directed by the Board. From time to time the Board may increase
the size of the Committee and appoint additional members, remove members (with
or without cause) and substitute new members, fill vacancies (however caused),
and remove all members of the Committee and thereafter directly administer the
Plan, all to the extent permitted by the rules under Rule 16b-3 relating to the
disinterested administration of employee benefit plans under which Section 16(b)
exempt discretionary grants and awards of equity securities are to be made.

               (iii)  Administration With Respect to Other Persons.  With 
                      --------------------------------------------   
respect to Option or Stock Purchase Right grants made to Employees or
Consultants who are neither Directors nor Officers of the Company, the Plan
shall be administered by (A) the Board or (B) a committee designated by the
Board, which committee shall be constituted to satisfy Applicable Laws. Once
appointed, such Committee shall serve in its designated capacity until otherwise
directed by the Board. The Board may increase the size of the Committee and
appoint additional members, remove members (with or without cause) and
substitute new members, fill vacancies (however caused), and remove all members
of the Committee and thereafter directly administer the Plan, all to the extent
permitted by Applicable Laws.

          (b)   Powers of the Administrator.  Subject to the provisions of the
                ---------------------------  
Plan, and in the case of a Committee, subject to the specific duties delegated
by the Board to such Committee, the Administrator shall have the authority, in
its discretion:

               (i)    to determine the Fair Market Value of the Common Stock, in
accordance with Section 2(n) of the Plan;

               (ii)   to select the Consultants and Employees to whom Options
and Stock Purchase Rights may be granted hereunder;

               (iii)  to determine whether and to what extent Options and
Stock Purchase Rights or any combination thereof, are granted hereunder;

               (iv)   to determine the number of shares of Common Stock to be
covered by each Option and Stock Purchase Right granted hereunder;

               (v)    to approve forms of agreement for use under the Plan;

               (vi)   to determine the terms and conditions, not inconsistent
with the terms of the Plan, of any award granted hereunder. Such terms and
conditions include, but are not limited to, the exercise price, the time or
times when Options or Stock Purchase Rights may be exercised (which may be based
on performance criteria), any vesting acceleration or waiver of forfeiture
restrictions, and any restriction or limitation regarding any Option or Stock
Purchase Right or the shares of Common Stock relating thereto, based in each
case on such factors as the Administrator, in its sole discretion, shall
determine;

                                      -5-
<PAGE>
 
               (vii)  to reduce the exercise price of any Option or Stock
Purchase Right to the then current Fair Market Value if the Fair Market Value of
the Common Stock covered by such Option or Stock Purchase Right shall have
declined since the date the Option or Stock Purchase Right was granted;

               (viii) to construe and interpret the terms of the Plan and awards
granted pursuant to the Plan;

               (ix)   to prescribe, amend and rescind rules and regulations
relating to the Plan, including rules and regulations relating to sub-plans
established for the purpose of qualifying for preferred tax treatment under
foreign tax laws;

               (x)    to modify or amend each Option or Stock Purchase Right
(subject to Section 15(c) of the Plan), including the discretionary authority to
extend the post-termination exercisability period of Options longer than is
otherwise provided for in the Plan;

               (xi)   to authorize any person to execute on behalf of the
Company any instrument required to effect the grant of an Option or Stock
Purchase Right previously granted by the Administrator;

               (xii)  to institute an Option Exchange Program;

               (xiii) to make all other determinations deemed necessary or
advisable for administering the Plan.

          (c)  Effect of Administrator's Decision.  The Administrator's
               ----------------------------------    
decisions, determinations and interpretations shall be final and binding on all
Optionees and any other holders of Options or Stock Purchase Rights.

     5.   Eligibility.  Nonstatutory Stock Options and Stock Purchase Rights may
          -----------                                                           
be granted to Employees and Consultants.  Incentive Stock Options may be granted
only to Employees.  If otherwise eligible, an Employee or Consultant who has
been granted an Option or Stock Purchase Right may be granted additional Options
or Stock Purchase Rights.

     6.   Limitations.
          ----------- 

          (a)  Each Option shall be designated in the written option agreement
as either an Incentive Stock Option or a Nonstatutory Stock Option. However,
notwithstanding such designation, to the extent that the aggregate Fair Market
Value of the Shares with respect to which Incentive Stock Options are
exercisable for the first time by the Optionee during any calendar year (under
all plans of the Company and any Parent or Subsidiary) exceeds one hundred
thousand dollars ($100,000), such Options shall be treated as Nonstatutory Stock
Options. For purposes of this Section 6(a), Incentive Stock Options shall be
taken into account in the order in which they were 

                                      -6-
<PAGE>
 
granted. The Fair Market Value of the Shares shall be determined as of the time
the Option with respect to such Shares is granted. If an Option is granted
hereunder that is part Incentive Stock Option and part Nonstatutory Stock Option
due to becoming first exercisable in any calendar year in excess of one hundred
thousand dollars ($100,000), the Incentive Stock Option portion of such Option
shall become exercisable first in such calendar year, and the Nonstatutory Stock
Option portion shall commence becoming exercisable once the one hundred thousand
dollars ($100,000) limit has been reached.

          (b)  Neither the Plan nor any Option or Stock Purchase Right shall
confer upon an Optionee any right with respect to continuing the Optionee's
employment or consulting relationship with the Company, nor shall they interfere
in any way with the Optionee's right or the Company's right to terminate such
employment or consulting relationship at any time, with or without cause.

          (c)  The following limitations shall apply to grants of Options to
Employees:

               (i)    No Employee shall be granted, in any fiscal year of the
Company, Options to purchase more than two hundred thousand (200,000) Shares.

               (ii)   In connection with his or her initial employment, an
Employee may be granted Options to purchase up to an additional one hundred and
fifty thousand (150,000) Shares which shall not count against the limit set
forth in subsection (i) above.

               (iii)  The foregoing limitations shall be adjusted
proportionately in connection with any change in the Company's capitalization as
described in Section 13.

               (iv)   If an Option is canceled in the same fiscal year of the
Company in which it was granted (other than in connection with a transaction
described in Section 13), the canceled Option will be counted against the limits
set forth in subsections (i) and (ii) above. For this purpose, if the exercise
price of an Option is reduced, the transaction will be treated as a cancellation
of the Option and the grant of a new Option.

     7.   Term of Plan.  Subject to Section 19 of the Plan, the Plan shall
          ------------                                                    
become effective upon the earlier to occur of its adoption by the Board or its
approval by the shareholders of the Company as described in Section 19 of the
Plan. It shall continue in effect for a term of ten (10) years unless terminated
earlier under Section 15 of the Plan.

     8.   Term of Option.  The term of each Option shall be stated in the Notice
          --------------                                                        
of Grant; provided, however, that in the case of an Incentive Stock Option, the
term shall be ten (10) years from the date of grant or such shorter term as may
be provided in the Notice of Grant.  Moreover, in the case of an Incentive Stock
Option granted to an Optionee who, at the time the Incentive Stock Option is
granted, owns stock representing more than ten percent (10%) of the voting power
of all classes of stock of the Company or any Parent or Subsidiary, the term of
the Incentive Stock Option 

                                      -7-
<PAGE>
 
shall be five (5) years from the date of grant or such shorter term as may be
provided in the Notice of Grant.

     9.   Option Exercise Price and Consideration.
          --------------------------------------- 

          (a)  Exercise Price.  The per share exercise price for the Shares to
               --------------         
be issued pursuant to exercise of an Option shall be determined by the
Administrator, subject to the following:

               (i)    In the case of an Incentive Stock Option

                      (A) granted to an Employee who, at the time the Incentive
Stock Option is granted, owns stock representing more than ten percent (10%) of
the voting power of all classes of stock of the Company or any Parent or
Subsidiary, the per Share exercise price shall be no less than 110% of the Fair
Market Value per Share on the date of grant.

                      (B) granted to any Employee other than an Employee
described in paragraph (A) immediately above, the per Share exercise price shall
be no less than one hundred percent (100%) of the Fair Market Value per Share on
the date of grant.

               (ii)   In the case of a Nonstatutory Stock Option, the per Share
exercise price shall be determined by the Administrator.

          (b)  Waiting Period and Exercise Dates.  At the time an Option is
               ---------------------------------        
granted, the Administrator shall fix the period within which the Option may be
exercised and shall determine any conditions which must be satisfied before the
Option may be exercised. In so doing, the Administrator may specify that an
Option may not be exercised until the completion of a service period.

          (c)  Form of Consideration.  The Administrator shall determine the
               ---------------------                                        
acceptable form of consideration for exercising an Option, including the method
of payment.  In the case of an Incentive Stock Option, the Administrator shall
determine the acceptable form of consideration at the time of grant.  Such
consideration may consist entirely of:

               (i)    cash; or

               (ii)   check; or

               (iii)  promissory note; or

               (iv)   other Shares which (A) in the case of Shares acquired upon
exercise of an option, have been owned by the Optionee for more than six (6)
months on the date of surrender, and (B) have a Fair Market Value on the date of
surrender equal to the aggregate exercise price of the Shares as to which said
Option shall be exercised; or

                                      -8-
<PAGE>
 
               (v)    delivery of a properly executed exercise notice together
with such other documentation as the Administrator and the broker, if
applicable, shall require to effect an exercise of the Option and delivery to
the Company of the sale or loan proceeds required to pay the exercise price; or

               (vi)   a reduction in the amount of any Company liability to the
Optionee, including any liability attributable to the Optionee's participation
in any Company-sponsored deferred compensation program or arrangement; or

               (vii)  any combination of the foregoing methods of payment; or

               (viii) such other consideration and method of payment for the
issuance of Shares to the extent permitted by Applicable Laws.

     10.  Exercise of Option.
          ------------------ 

          (a)  Procedure for Exercise; Rights as a Shareholder. Any Option
               -----------------------------------------------  
granted hereunder shall be exercisable according to the terms of the Plan and at
such times and under such conditions as determined by the Administrator and set
forth in the Option Agreement.

              An Option may not be exercised for a fraction of a Share.

              An Option shall be deemed exercised when the Company receives: (i)
written notice of exercise (in accordance with the Option Agreement) from the
person entitled to exercise the Option, and (ii) full payment for the Shares
with respect to which the Option is exercised.  Full payment may consist of any
consideration and method of payment authorized by the Administrator and
permitted by the Option Agreement and the Plan.  Shares issued upon exercise of
an Option shall be issued in the name of the Optionee or, if requested by the
Optionee, in the name of the Optionee and his or her spouse.  Until the stock
certificate evidencing such Shares is issued (as evidenced by the appropriate
entry on the books of the Company or of a duly authorized transfer agent of the
Company), no right to vote or receive dividends or any other rights as a
shareholder shall exist with respect to the Optioned Stock, notwithstanding the
exercise of the Option.  The Company shall issue (or cause to be issued) such
stock certificate promptly after the Option is exercised.  No adjustment will be
made for a dividend or other right for which the record date is prior to the
date the stock certificate is issued, except as provided in Section 13 of the
Plan.

              Exercising an Option in any manner shall decrease the number of
Shares thereafter available, both for purposes of the Plan and for sale under
the Option, by the number of Shares as to which the Option is exercised.

          (b)  Termination of Employment or Consulting Relationship.  Upon
               ----------------------------------------------------       
termination of an Optionee's Continuous Status as an Employee or Consultant,
other than upon the Optionee's death or Disability, the Optionee may exercise
his or her Option within such period of time as is specified in 

                                      -9-
<PAGE>
 
the Notice of Grant, up to a maximum of three (3) months from the date of
termination, to the extent that he or she is entitled to exercise it on the date
of termination (but in no event later than the expiration of the term of such
Option as set forth in the Notice of Grant). In the absence of a specified time
in the Notice of Grant, the Option shall remain exercisable for three (3) months
following the Optionee's termination. If, on the date of termination, the
Optionee is not entitled to exercise his or her entire Option, the Shares
covered by the unexercisable portion of the Option shall revert to the Plan. If,
after termination, the Optionee does not exercise his or her Option within the
time specified by the Administrator, the Option shall terminate, and the Shares
covered by such Option shall revert to the Plan.

          Notwithstanding the above, in the event of an Optionee's change in
status from Consultant to Employee or Employee to Consultant, the Optionee's
Continuous Status as an Employee or Consultant shall not automatically terminate
solely as a result of such change in status.  In such event, an Incentive Stock
Option held by the Optionee shall cease to be treated as an Incentive Stock
Option and shall be treated for tax purposes as a Nonstatutory Stock Option
three months and one day following such change of status.

          (c)  Disability of Optionee.  Upon termination of an Optionee's
               ----------------------    
Continuous Status as an Employee or Consultant as a result of the Optionee's
Disability, the Optionee may exercise his or her Option at any time within
twelve (12) months from the date of termination, but only to the extent that the
Optionee is entitled to exercise it on the date of termination (and in no event
later than the expiration of the term of the Option as set forth in the Notice
of Grant). If, on the date of termination, the Optionee is not entitled to
exercise his or her entire Option, the Shares covered by the unexercisable
portion of the Option shall revert to the Plan. If, after termination, the
Optionee does not exercise his or her Option within the time specified herein,
the Option shall terminate, and the Shares covered by such Option shall revert
to the Plan.

          (d)  Death of Optionee.  Upon the death of an Optionee, the Option
               -----------------      
shall become one hundred percent (100%) vested and may be exercised at any time
within twelve (12) months following the date of death (but in no event later
than the expiration of the term of such Option as set forth in the Notice of
Grant), by the Optionee's estate or by a person who acquires the right to
exercise the Option by bequest or inheritance. If the Optionee's estate or the
person who acquires the right to exercise the Option by bequest or inheritance
does not exercise the Option within the time specified herein, the Option shall
terminate, and the Shares covered by such Option shall revert to the Plan.

          (e)   Buyout Provisions.  The Administrator may at any time offer to
                -----------------    
buy out for a payment in cash or Shares, an Option previously granted based on
such terms and conditions as the Administrator shall establish and communicate
to the Optionee at the time that such offer is made.

          (f)   Rule 16b-3.  Options granted to individuals subject to Section
                ---------- 
16 of the Exchange Act ("Insiders") must comply with the applicable provisions
of Rule 16b-3 and shall contain such 

                                      -10-
<PAGE>
 
additional conditions or restrictions as may be required thereunder to qualify
for the maximum exemption from Section 16 of the Exchange Act with respect to
Plan transactions.

     11.  Stock Purchase Rights.
          --------------------- 

          (a)  Rights to Purchase.  Stock Purchase Rights may be issued either
               ------------------ 
alone, in addition to, or in tandem with other awards granted under the Plan
and/or cash awards made outside of the Plan. After the Administrator determines
that it will offer Stock Purchase Rights under the Plan, it shall advise the
offeree in writing, by means of a Notice of Grant, of the terms, conditions and
restrictions related to the offer, including the number of Shares that the
offeree shall be entitled to purchase, the price to be paid, and the time within
which the offeree must accept such offer, which shall in no event exceed six (6)
months from the date upon which the Administrator made the determination to
grant the Stock Purchase Right. The offer shall be accepted by execution of a
Restricted Stock Purchase Agreement in the form determined by the Administrator.

          (b)  Repurchase Option.  Unless the Administrator determines
               ----------------- 
otherwise, the Restricted Stock Purchase Agreement shall grant the Company a
repurchase option exercisable upon the voluntary or involuntary termination of
the purchaser's employment with the Company for any reason (including death or
Disability). The purchase price for Shares repurchased pursuant to the
Restricted Stock purchase agreement shall be the original price paid by the
purchaser and may be paid by cancellation of any indebtedness of the purchaser
to the Company. The repurchase option shall lapse at a rate determined by the
Administrator.

          (c)  Rule 16b-3.  Stock Purchase Rights granted to Insiders, and
               ----------    
Shares purchased by Insiders in connection with Stock Purchase Rights, shall be
subject to any restrictions applicable thereto in compliance with Rule 16b-3. An
Insider may only purchase Shares pursuant to the grant of a Stock Purchase
Right, and may only sell Shares purchased pursuant to the grant of a Stock
Purchase Right, during such time or times as are permitted by Rule 16b-3.

          (d)  Other Provisions.  The Restricted Stock Purchase Agreement shall
               ----------------                                                
contain such other terms, provisions and conditions not inconsistent with the
Plan as may be determined by the Administrator in its sole discretion.  In
addition, the provisions of Restricted Stock Purchase Agreements need not be the
same with respect to each purchaser.

          (e)   Rights as a Shareholder.  Once the Stock Purchase Right is
                -----------------------                      
exercised, the purchaser shall have the rights equivalent to those of a
shareholder, and shall be a shareholder when his or her purchase is entered upon
the records of the duly authorized transfer agent of the Company. No adjustment
will be made for a dividend or other right for which the record date is prior to
the date the Stock Purchase Right is exercised, except as provided in Section 13
of the Plan.

     12.  Non-Transferability of Options and Stock Purchase Rights.  An Option
          --------------------------------------------------------            
or Stock Purchase Right may not be sold, pledged, assigned, hypothecated,
transferred, or disposed of in any 

                                      -11-
<PAGE>
 
manner other than by will or by the laws of descent or distribution and may be
exercised, during the lifetime of the Optionee, only by the Optionee.

     13.  Adjustments Upon Changes in Capitalization, Dissolution, Merger or
          ------------------------------------------------------------------
          Asset Sale.
          ---------- 

          (a)  Changes in Capitalization.  Subject to any required action by the
               -------------------------                                        
shareholders of the Company, the number of shares of Common Stock covered by
each outstanding Option and Stock Purchase Right, and the number of shares of
Common Stock which have been authorized for issuance under the Plan but as to
which no Options or Stock Purchase Rights have yet been granted or which have
been returned to the Plan upon cancellation or expiration of an Option or Stock
Purchase Right, as well as the price per share of Common Stock covered by each
such outstanding Option or Stock Purchase Right, shall be proportionately
adjusted for any increase or decrease in the number of issued shares of Common
Stock resulting from a stock split, reverse stock split, stock dividend,
combination or reclassification of the Common Stock, or any other increase or
decrease in the number of issued shares of Common Stock effected without receipt
of consideration by the Company; provided, however, that conversion of any
convertible securities of the Company shall not be deemed to have been "effected
without receipt of consideration." Such adjustment shall be made by the Board,
whose determination in that respect shall be final, binding and conclusive.
Except as expressly provided herein, no issuance by the Company of shares of
stock of any class, or securities convertible into shares of stock of any class,
shall affect, and no adjustment by reason thereof shall be made with respect to,
the number or price of shares of Common Stock subject to an Option or Stock
Purchase Right.

          (b)  Dissolution or Liquidation.  In the event of the proposed
               --------------------------  
dissolution or liquidation of the Company, the Administrator shall notify each
Optionee as soon as practicable prior to the effective date of such proposed
transaction. The Administrator in its discretion may provide for an Optionee to
have the right to exercise his or her Option until ten (10) days prior to such
transaction as to all of the Optioned Stock covered thereby, including Shares as
to which the Option would not otherwise be exercisable. In addition, the
Administrator may provide that any Company repurchase option applicable to any
Shares purchased upon exercise of an Option shall lapse as to all such Shares,
provided the proposed dissolution or liquidation takes place at the time and in
the manner contemplated. To the extent it has not been previously exercised, an
Option will terminate immediately prior to the consummation of such proposed
action.

          (c)  Merger or Asset Sale.  In the event of a merger of the Company
               --------------------
with or into another corporation, or the sale of substantially all of the assets
of the Company, each outstanding Option and Stock Purchase Right shall be
assumed or an equivalent option or right substituted by the successor
corporation or a Parent or Subsidiary of the successor corporation. In the event
that the successor corporation refuses to assume or substitute for the Option or
Stock Purchase Right, the Optionee shall have the right to exercise the Option
or Stock Purchase Right as to all of the Optioned Stock, including Shares as to
which it would not otherwise be exercisable. If an Option or Stock Purchase
Right is exercisable in lieu of assumption or substitution in the event of a
merger or sale of assets, the Administrator shall notify the Optionee that the
Option or Stock Purchase Right shall be 

                                      -12-
<PAGE>
 
fully exercisable and vested for a period of fifteen (15) days from the date of
such notice, and the Option or Stock Purchase Right shall terminate upon the
expiration of such period. In the event an Option or Stock Purchase right
becomes fully exercisable and vested pursuant to the preceding sentence, such
Option or Stock Purchase Right shall only be exercisable in full; no fractional
exercise shall be permitted. For the purposes of this paragraph, the Option or
Stock Purchase Right shall be considered assumed if, following the merger or
sale of assets, the option or right confers the right to purchase or receive,
for each Share of Optioned Stock subject to the Option or Stock Purchase Right
immediately prior to the merger or sale of assets, the consideration (whether
stock, cash, or other securities or property) received in the merger or sale of
assets by holders of Common Stock for each Share held on the effective date of
the transaction (and if holders were offered a choice of consideration, the type
of consideration chosen by the holders of a majority of the outstanding Shares);
provided, however, that if such consideration received in the merger or sale of
assets is not solely common stock of the successor corporation or its Parent,
the Administrator may, with the consent of the successor corporation, provide
for the consideration to be received upon the exercise of the Option or Stock
Purchase Right, for each Share of Optioned Stock subject to the Option or Stock
Purchase Right, to be solely common stock of the successor corporation or its
Parent equal in fair market value to the per share consideration received by
holders of Common Stock in the merger or sale of assets.

     14.  Date of Grant.  The date of grant of an Option or Stock Purchase Right
          -------------                                                         
shall be, for all purposes, the date on which the Administrator makes the
determination granting such Option or Stock Purchase Right, or such other later
date as is determined by the Administrator.  Notice of the determination shall
be provided to each Optionee within a reasonable time after the date of such
grant.

     15.  Amendment and Termination of the Plan.
          ------------------------------------- 

          (a)  Amendment and Termination.  The Board may at any time amend,
               -------------------------                                   
alter, suspend or terminate the Plan.

          (b)  Shareholder Approval.  The Company shall obtain shareholder
               --------------------                       
approval of any Plan amendment to the extent necessary and desirable to comply
with Rule 16b-3 or with Section 422 of the Code (or any successor rule or
statute or other applicable law, rule or regulation, including the requirements
of any exchange or quotation system on which the Common Stock is listed or
quoted). Such shareholder approval, if required, shall be obtained in such a
manner and to such a degree as is required by the applicable law, rule or
regulation.

          (c)  Effect of Amendment or Termination.  No amendment, alteration,
               ----------------------------------                            
suspension or termination of the Plan shall impair the rights of any Optionee,
unless mutually agreed otherwise between the Optionee and the Administrator,
which agreement must be in writing and signed by the Optionee and the Company.

     16.  Conditions Upon Issuance of Shares.
          ---------------------------------- 

                                      -13-
<PAGE>
 
          (a)  Legal Compliance.  Shares shall not be issued pursuant to the
               ----------------                                  
exercise of an Option or Stock Purchase Right unless the exercise of such Option
or Stock Purchase Right and the issuance and delivery of such Shares shall
comply with all relevant provisions of law, including, without limitation, the
Securities Act of 1933, as amended, the Exchange Act, the rules and regulations
promulgated thereunder, Applicable Laws, and the requirements of any stock
exchange or quotation system upon which the Shares may then be listed or quoted,
and shall be further subject to the approval of counsel for the Company with
respect to such compliance.

          (b)  Investment Representations.  As a condition to the exercise of
               --------------------------     
an Option or Stock Purchase Right, the Company may require the person exercising
such Option or Stock Purchase Right to represent and warrant at the time of any
such exercise that the Shares are being purchased only for investment and
without any present intention to sell or distribute such Shares if, in the
opinion of counsel for the Company, such a representation is required.


     17.  Liability of Company.
          -------------------- 

          (a)  Inability to Obtain Authority.  The inability of the Company to
               -----------------------------                        
obtain authority from any regulatory body having jurisdiction, which authority
is deemed by the Company's counsel to be necessary to the lawful issuance and
sale of any Shares hereunder, shall relieve the Company of any liability in
respect of the failure to issue or sell such Shares as to which such requisite
authority shall not have been obtained.

          (b)  Grants Exceeding Allotted Shares.  If the Optioned Stock covered
               --------------------------------                        
by an Option or Stock Purchase Right exceeds, as of the date of grant, the
number of Shares which may be issued under the Plan without additional
shareholder approval, such Option or Stock Purchase Right shall be void with
respect to such excess Optioned Stock, unless shareholder approval of an
amendment sufficiently increasing the number of Shares subject to the Plan is
timely obtained in accordance with Section 15(b) of the Plan.

     18.  Reservation of Shares.  The Company, during the term of this Plan,
          ---------------------                                             
will at all times reserve and keep available such number of Shares as shall be
sufficient to satisfy the requirements of the Plan.

     19.  Shareholder Approval.  Continuance of the Plan shall be subject to
          --------------------                                              
approval by the shareholders of the Company within twelve (12) months before or
after the date the Plan is adopted.  Such shareholder approval shall be obtained
in the manner and to the degree required under Applicable Laws and the rules of
any stock exchange upon which the Common Stock is listed.

                                      -14-
<PAGE>
 
                               IA CORPORATION I

                            STOCK OPTION AGREEMENT


     Unless otherwise defined herein, the terms defined in the Plan shall have
the same defined meanings in this Option Agreement.

I.   NOTICE OF STOCK OPTION GRANT
     ----------------------------

________________________

________________________

________________________

     You have been granted an option to purchase Common Stock of the Company,
subject to the terms and conditions of the Plan and this Option Agreement, as
follows:

     Grant Number                       _________________________

     Date of Grant                      _________________________

     Vesting Commencement Date          _________________________

     Exercise Price per Share           $________________________

     Total Number of Shares Granted     _________________________

     Total Exercise Price               $_________________________

     Type of Option:                    ___   Incentive Stock Option

                                        ___   Nonstatutory Stock Option

     Term/Expiration Date:              _________________________


   Vesting Schedule:
   ---------------- 

     This Option may be exercised, in whole or in part, in accordance with the
following schedule:

     Twenty-five percent (25%) of the Shares subject to the Option shall vest
twelve (12) months after the Vesting Commencement Date, and 1/48 of the Shares
subject to the Option shall vest each month thereafter.

                                      -15-
<PAGE>
 
     Termination Period:
     ------------------ 

     This Option may be exercised for three (3) months after termination of the
Optionee's Continuous Status as an Employee or Consultant with the Company.
Upon the death or Disability of the Optionee, this Option may be exercised for
such longer period as provided in the Plan.  In no event shall this Option be
exercised later than the Term/Expiration Date as provided above.

II.  AGREEMENT
     ---------

     1.   Grant of Option.  The Plan Administrator of the Company hereby grants
          ---------------                                                      
to the Optionee named in the Notice of Grant attached as Part I of this
Agreement (the "Optionee") an option (the "Option") to purchase the number of
Shares, as set forth in the Notice of Grant, at the exercise price per share set
forth in the Notice of Grant (the "Exercise Price"), subject to the terms and
conditions of the Plan, which is incorporated herein by reference.  Subject to
Section 15(c) of the Plan, in the event of a conflict between the terms and
conditions of the Plan and the terms and conditions of this Option Agreement,
the terms and conditions of the Plan shall prevail.

          If designated in the Notice of Grant as an Incentive Stock Option
("ISO"), this Option is intended to qualify as an Incentive Stock Option under
Section 422 of the Code.  However, if this Option is intended to be an Incentive
Stock Option, to the extent that it exceeds the one hundred thousand dollars
($100,000) rule of Code Section 422(d) it shall be treated as a Nonstatutory
Stock Option ("NSO").

     2.   Exercise of Option.
          ------------------ 

          (a)  Right to Exercise.  This Option is exercisable during its term in
               -----------------                                                
accordance with the Vesting Schedule set out in the Notice of Grant and the
applicable provisions of the Plan and this Option Agreement.  In the event of
Optionee's death, Disability or other termination of Optionee's employment or
consulting relationship, the exercisability of the Option is governed by the
applicable provisions of the Plan and this Option Agreement.

          (b)  Method of Exercise.  This Option is exercisable by delivery of an
               ------------------                                               
exercise notice, in the form attached as Exhibit A (the "Exercise Notice"),
which shall state the election to exercise the Option, the number of Shares in
respect of which the Option is being exercised (the "Exercised Shares"), and
such other representations and agreements as may be required by the Company
pursuant to the provisions of the Plan.  The Exercise Notice shall be signed by
the Optionee and shall be delivered in person or by certified mail to the
Secretary of the Company.  The Exercise Notice shall be accompanied by payment
of the aggregate Exercise Price as to all Exercised Shares.  This Option shall
be deemed to be exercised upon receipt by the Company of such fully executed
Exercise Notice accompanied by such aggregate Exercise Price.

          No Shares shall be issued pursuant to the exercise of this Option
unless such issuance and exercise complies with all relevant provisions of law
and the requirements of any stock exchange 

                                      -16-
<PAGE>
 
or quotation service upon which the Shares are then listed. Assuming such
compliance, for income tax purposes the Exercised Shares shall be considered
transferred to the Optionee on the date the Option is exercised with respect to
such Exercised Shares.

     3.   Method of Payment.  Payment of the aggregate Exercise Price shall be
          -----------------                                                   
by any of the following, or a combination thereof, at the election of the
Optionee:

          (a)  cash; or

          (b)  check; or

          (c)  delivery of a properly executed exercise notice together with
such other documentation as the Administrator and the broker, if applicable,
shall require to effect an exercise of the Option and delivery to the Company of
the sale or loan proceeds required to pay the exercise price; or

          (d)  surrender of other Shares which (i) in the case of Shares
acquired upon exercise of an option, have been owned by the Optionee for more
than six (6) months on the date of surrender, AND (ii) have a Fair Market Value
on the date of surrender equal to the aggregate Exercise Price of the Exercised
Shares.

     4.   Non-Transferability of Option.  This Option may not be transferred in
          -----------------------------                                        
any manner otherwise than by will or by the laws of descent or distribution and
may be exercised during the lifetime of Optionee, only by the Optionee.  The
terms of the Plan and this Option Agreement shall be binding upon the executors,
administrators, heirs, successors and assigns of the Optionee.

     5.   Term of Option.  This Option may be exercised only within the term set
          --------------                                                        
out in the Notice of Grant, and may be exercised during such term only in
accordance with the Plan and the terms of this Option Agreement.

     6.   Tax Consequences.  Some of the federal and California tax consequences
          ----------------                                                      
relating to this Option, as of the date of this Option, are set forth below.
THIS SUMMARY IS NECESSARILY INCOMPLETE, AND THE TAX LAWS AND REGULATIONS ARE
SUBJECT TO CHANGE.  THE OPTIONEE SHOULD CONSULT A TAX ADVISER BEFORE EXERCISING
THIS OPTION OR DISPOSING OF THE SHARES.

          (a)  Exercising the Option.
               --------------------- 

               (i)    Nonstatutory Stock Option.  The Optionee may incur regular
                      -------------------------                             
federal income tax and California income tax liability upon exercise of a NSO.
The Optionee will be treated as having received compensation income (taxable at
ordinary income tax rates) equal to the excess, if any, of the Fair Market Value
of the Exercised Shares on the date of exercise over their aggregate Exercise
Price. If the Optionee is an Employee or a former Employee, the Company will be
required 

                                      -17-
<PAGE>
 
to withhold from his or her compensation or collect from Optionee and pay to the
applicable taxing authorities an amount in cash equal to a percentage of this
compensation income at the time of exercise, and may refuse to honor the
exercise and refuse to deliver Shares if such withholding amounts are not
delivered at the time of exercise.

               (ii)   Incentive Stock Option.  If this Option qualifies as an
                      ----------------------
ISO, the Optionee will have no regular federal income tax or California income
tax liability upon its exercise, although the excess, if any, of the Fair Market
Value of the Exercised Shares on the date of exercise over their aggregate
Exercise Price will be treated as an adjustment to alternative minimum taxable
income for federal tax purposes and may subject the Optionee to alternative
minimum tax in the year of exercise. In the event that the Optionee undergoes a
change of status from Employee to Consultant, any Incentive Stock Option of the
Optionee that remains unexercised shall cease to qualify as an Incentive Stock
Option and will be treated for tax purposes as a Nonstatutory Stock Option on
the ninety-first (91st) day following such change of status.

          (b)  Disposition of Shares.
               --------------------- 

               (i)    NSO.  If the Optionee holds NSO Shares for at least one
                      ---  
(1) year, any gain realized on disposition of the Shares will be treated as 
long-term capital gain for federal income tax purposes.

                (ii)  ISO.  If the Optionee holds ISO Shares for at least one
                      ---                                                       
(1) year after exercise and two years after the grant date, any gain realized on
disposition of the Shares will be treated as long-term capital gain for federal
income tax purposes. If the Optionee disposes of ISO Shares within one year
after exercise or two (2) years after the grant date, any gain realized on such
disposition will be treated as compensation income (taxable at ordinary income
rates) to the extent of the excess, if any, of the lesser of (A) the difference
between the Fair Market Value of the Shares acquired on the date of exercise and
the aggregate Exercise Price, or (B) the difference between the sale price of
such Shares and the aggregate Exercise Price.

          (c)  Notice of Disqualifying Disposition of ISO Shares.  If the
               -------------------------------------------------        
Optionee sells or otherwise disposes of any of the Shares acquired pursuant to
an ISO on or before the later of (i) two (2) years after the grant date, or (ii)
one year after the exercise date, the Optionee shall immediately notify the
Company in writing of such disposition. The Optionee agrees that he or she may
be subject to income tax withholding by the Company on the compensation income
recognized from such early disposition of ISO Shares by payment in cash or out
of the current earnings paid to the Optionee.

     7.   Entire Agreement; Governing Law.  The Plan is incorporated herein by
          -------------------------------                                     
reference.  The Plan and this Option Agreement constitute the entire agreement
of the parties with respect to the subject matter hereof and supersede in their
entirety all prior undertakings and agreements of the Company and Optionee with
respect to the subject matter hereof, and may not be modified adversely 

                                      -18-
<PAGE>
 
to the Optionee's interest except by means of a writing signed by the Company
and Optionee. This agreement is governed by California law except for that body
of law pertaining to conflict of laws.

     8.   NO GUARANTEE OF EMPLOYMENT.  OPTIONEE ACKNOWLEDGES AND AGREES THAT THE
          --------------------------                                            
VESTING OF SHARES PURSUANT TO THE VESTING SCHEDULE HEREOF IS EARNED ONLY BY
CONTINUING SERVICE AS AN EMPLOYEE OR CONSULTANT AT THE WILL OF THE COMPANY (AND
NOT THROUGH THE ACT OF BEING HIRED, BEING GRANTED AN OPTION OR PURCHASING SHARES
HEREUNDER).  OPTIONEE FURTHER ACKNOWLEDGES AND AGREES THAT THIS AGREEMENT, THE
TRANSACTIONS CONTEMPLATED HEREUNDER AND THE VESTING SCHEDULE SET FORTH HEREIN DO
NOT CONSTITUTE AN EXPRESS OR IMPLIED PROMISE OF CONTINUED ENGAGEMENT AS AN
EMPLOYEE OR CONSULTANT FOR THE VESTING PERIOD, FOR ANY PERIOD, OR AT ALL, AND
SHALL NOT INTERFERE WITH OPTIONEE'S RIGHT OR THE COMPANY'S RIGHT TO TERMINATE
OPTIONEE'S EMPLOYMENT OR CONSULTING RELATIONSHIP AT ANY TIME, WITH OR WITHOUT
CAUSE.

     By your signature and the signature of the Company's representative below,
you and the Company agree that this Option is granted under and governed by the
terms and conditions of the Plan and this Option Agreement.  Optionee has
reviewed the Plan and this Option Agreement in their entirety, has had an
opportunity to obtain the advice of counsel prior to executing this Option
Agreement and fully understands all provisions of the Plan and Option Agreement.
Optionee hereby agrees to accept as binding, conclusive and final all decisions
or interpretations of the Administrator upon any questions relating to the Plan
and Option Agreement.  Optionee further agrees to notify the Company upon any
change in the residence address indicated below.


OPTIONEE:                             IA Corporation I



____________________________________  By:____________________________________
Signature

____________________________________  Title:_________________________________
Print Name

____________________________________
Residence Address

____________________________________

                                      -19-
<PAGE>
 
                                   EXHIBIT A
                                   ---------

                                IA CORPORATION I
                                1996 STOCK PLAN

                                EXERCISE NOTICE


IA Corporation I
1900 Powell Street, Suite 600
Emeryville, CA  94608-1840
Attention:  Secretary

     1.   Exercise of Option.  Effective as of today, ________________, _____,
          ------------------                                                  
the undersigned ("Purchaser") hereby elects to purchase ______________ shares
(the "Shares") of the Common Stock of IA Corporation I (the "Company") under and
pursuant to the 1996 Stock Plan (the "Plan") and the Stock Option Agreement
dated _____________, 19___ (the "Option Agreement").  The purchase price for the
Shares shall be $_______________________, as required by the Option Agreement.

     2.   Delivery of Payment.  Purchaser herewith delivers to the Company the
          -------------------                                                 
full purchase price for the Shares.

     3.   Representations of Purchaser.  Purchaser acknowledges that Purchaser
          ----------------------------                                        
has received, read and understood the Plan and the Option Agreement and agrees
to abide by and be bound by their terms and conditions.

     4.   Rights as Shareholder.  Until the issuance (as evidenced by the
          ---------------------                                          
appropriate entry on the books of the Company or of a duly authorized transfer
agent of the Company) of the stock certificate evidencing such Shares, no right
to vote or receive dividends or any other rights as a shareholder shall exist
with respect to the Optioned Stock, notwithstanding the exercise of the Option.
A share certificate for the number of Shares so acquired shall be issued to the
Optionee as soon as practicable after exercise of the Option.  No adjustment
will be made for a dividend or other right for which the record date is prior to
the date the stock certificate is issued, except as provided in Section 13 of
the Plan.

     5.   Tax Consultation.  Purchaser understands that Purchaser may suffer
          ----------------                                                  
adverse tax consequences as a result of Purchaser's purchase or disposition of
the Shares.  Purchaser represents that Purchaser has consulted with any tax
consultants Purchaser deems advisable in connection with the purchase or
disposition of the Shares and that Purchaser is not relying on the Company for
any tax advice.

     6.   Entire Agreement; Governing Law.  The Plan and Option Agreement are
          -------------------------------                                    
incorporated herein by reference.  This Agreement, the Plan and the Option
Agreement constitute the entire agreement of the parties with respect to the
subject matter 
<PAGE>
 
hereof and supersede in their entirety all prior undertakings and agreements of
the Company and Purchaser with respect to the subject matter hereof, and may not
be modified adversely to the Purchaser's interest except by means of a writing
signed by the Company and Purchaser. This agreement is governed by California
law except for that body of law pertaining to conflict of laws.


Submitted by:                       Accepted by:

PURCHASER:                          IA Corporation I


__________________________________  By: _________________________________
Signature

__________________________________  Its: ________________________________
Print Name


Address:                            Address:
- -------                             ------- 

__________________________________  1900 Powell St., Suite 600
                                    Emeryville, CA  94608-1840
__________________________________


                                      -2-

<PAGE>

                                                                     EXHIBIT 4.2
 
                                IA CORPORATION

                       1996 EMPLOYEE STOCK PURCHASE PLAN
                        (AS AMENDED THROUGH JUNE 1997)


     The following constitute the provisions of the 1996 Employee Stock Purchase
Plan of IA Corporation.

     1.   Purpose.  The purpose of the Plan is to provide employees of the
          -------                                                         
Company and its Designated Subsidiaries with an opportunity to purchase Common
Stock of the Company through accumulated payroll deductions.  It is the
intention of the Company to have the Plan qualify as an "Employee Stock Purchase
Plan" under Section 423 of the Internal Revenue Code of 1986, as amended.  The
provisions of the Plan, accordingly, shall be construed so as to extend and
limit participation in a manner consistent with the requirements of that section
of the Code.

     2.   Definitions.
          ----------- 

          (a)  "Board" shall mean the Board of Directors of the Company.
                -----                                                   

          (b)  "Code" shall mean the Internal Revenue Code of 1986, as amended.
                ----                                                           

          (c)  "Common Stock" shall mean the Common Stock of the Company.
                ------------                                             

          (d)  "Company" shall mean IA Corporation and any Designated Subsidiary
                -------                                                         
of the Company.

          (e)  "Compensation" shall mean all base straight time gross earnings 
                ------------  
and commissions, overtime, shift premiums, bonuses and other cash compensation
but shall not include income recognized pursuant to stock options or Shares
purchased hereunder or to imputed fringe benefit income.

          (f)  "Current Purchase Period" shall mean any Purchase Period which is
                -----------------------                                         
scheduled to end in the current calendar year.

          (g)  "Designated Subsidiaries" shall mean the Subsidiaries which have 
                -----------------------
been designated by the Board from time to time in its sole discretion as
eligible to participate in the Plan.

          (h)  "Employee" shall mean any individual who is an Employee of the 
                -------- 
Company for tax purposes whose customary employment with the Company is at least
twenty (20) hours per week and more than five (5) months in any calendar year.
For purposes of the Plan, the employment relationship shall be treated as
continuing intact while the individual is on sick leave or other leave of
absence approved by the Company. Where the period of leave exceeds ninety (90)
days and the
<PAGE>
 
individual's right to reemployment is not guaranteed either by statute or by
contract, the employment relationship shall be deemed to have terminated on the
ninety-first (91)st day of such leave.

          (i)  "Enrollment Date" shall mean the first day of each Offering
                ---------------                                           
Period.

          (j)  "Exercise Date" shall mean the last day of each Purchase Period.
                -------------                                                  

          (k)  "Fair Market Value" shall mean, as of any date, the value of
                -----------------                                          
Common Stock determined as follows:

               (i)    If the Common Stock is listed on any established stock 
exchange or a national market system, including without limitation the Nasdaq
National Market or The Nasdaq SmallCap Market of The Nasdaq Stock Market, its
Fair Market Value shall be the closing sales price for such stock (or the
closing bid, if no sales were reported) as quoted on such exchange or system for
the last market trading day prior to the time of determination, as reported in
The Wall Street Journal or such other source as the Administrator deems
reliable, or;

               (ii)   If the Common Stock is regularly quoted by a recognized 
securities dealer but selling prices are not reported, its Fair Market Value
shall be the mean of the closing bid and asked prices for the Common Stock on
the date of such determination, as reported in The Wall Street Journal or such
other source as the Board deems reliable, or;

               (iii)  In the absence of an established market for the Common 
Stock, the Fair Market Value thereof shall be determined in good faith by the
Board; or

               (iv)   For the purposes of the Enrollment Date under the first 
Offering Period under the Plan, the Fair Market Value of the Common Stock shall
be the price to public as set forth in the final prospectus included within the
Registration Statement on either Form S-1 or Form SB-2 filed with the Securities
and Exchange Commission for the initial public offering of the Common Stock.

          (l)  "New Exercise Date" shall mean the new Exercise Date set for 
                -----------------       
Purchase Periods in the event of a proposed sale of all or substantially all of
the assets of the Company, or the merger of the Company with or into another
corporation in accordance with Section 18(c).

          (m)  "Offering Periods" shall mean the periods of approximately 
                ----------------                  
twenty-four (24) months during which an option granted pursuant to the Plan may
be exercised, commencing on the first Trading Day on or after August 1 and
February 1 of each year and terminating on the last Trading Day in the periods
ending twenty-four (24) months later; provided, however, that the first Offering
Period shall be the period of approximately twenty-seven (27) months, commencing
with the first Trading Day on or after the date on which the Company's
registration statement on either Form S-1 or Form SB-2 (or any successor forms
thereof) is declared effective by the Securities and Exchange Commission and
terminating on the last Trading Day in the period ending January 31, 

                                      -2-
<PAGE>
 
1999. The second Offering Period under the Plan shall commence on the first
Trading Day on or after February 1, 1997. The duration and timing of Offering
Periods may be changed pursuant to Section 4 of this Plan.

          (n)  "Plan" shall mean this Employee Stock Purchase Plan.
                ----                                               

          (o)  "Purchase Price" shall mean an amount equal to eighty-five 
                --------------                               
percent (85)% of the Fair Market Value of a share of Common Stock on the
Enrollment Date or on the Exercise Date, whichever is lower.

          (p)  "Purchase Period" shall mean the approximately six (6) month 
                ---------------                                 
period commencing after one Exercise Date and ending with the next Exercise
Date, except that the first Purchase Period of any Offering Period shall
commence on the Enrollment Date and end with the next Exercise Date.

          (q)  "Reserves" shall mean the number of shares of Common Stock 
                --------                             
covered by each option under the Plan which have not yet been exercised and the
number of shares of Common Stock which have been authorized for issuance under
the Plan but not yet placed under option.

          (r)  "Subsidiary" shall mean a corporation, domestic or foreign, of 
                ----------                
which not less than fifty percent (50)% of the voting shares are held by the
Company or a Subsidiary, whether or not such corporation now exists or is
hereafter organized or acquired by the Company or a Subsidiary.

          (s)  "Trading Day" shall mean a day on which national stock exchanges
                -----------                                                    
and the Nasdaq System are open for trading.

     3.   Eligibility.
          ----------- 

          (a)  Any Employee, who shall be employed by the Company on a given
Enrollment Date shall be eligible to participate in the Plan.

          (b)  Any provisions of the Plan to the contrary notwithstanding, no
Employee shall be granted an option under the Plan (i) to the extent that,
immediately after the grant, such Employee (or any other person whose stock
would be attributed to such Employee pursuant to Section 424(d) of the Code)
would own capital stock of the Company and/or hold outstanding options to
purchase such stock possessing five percent (5%) or more of the total combined
voting power or value of all classes of the capital stock of the Company or of
any Subsidiary, or (ii) to the extent that his or her rights to purchase stock
under all employee stock purchase plans of the Company and its subsidiaries
accrues at a rate which exceeds twenty-five thousand dollars ($25,000) worth of
stock (determined at the fair market value of the shares at the time such option
is granted) for each calendar year in which such option is outstanding at any
time.

                                      -3-
<PAGE>
 
     4.   Offering Periods.  The Plan shall be implemented by consecutive,
          ----------------                                                
overlapping Offering Periods.  The Board shall have the power to change the
duration of Offering Periods (including the commencement dates thereof) with
respect to future offerings without shareholder approval if such change is
announced at least two (2) days prior to the scheduled beginning of the first
Offering Period to be affected thereafter.

     5.   Participation.
          ------------- 

          (a)  An eligible Employee may become a participant in the Plan by
completing a subscription agreement authorizing payroll deductions in the form
of Exhibit A to this Plan and filing it with the Company's payroll office prior
to the applicable Enrollment Date.

          (b)  Payroll deductions for a participant shall commence on the first
payroll following the Enrollment Date and shall end on the last payroll in the
Offering Period to which such authorization is applicable, unless sooner
terminated by the participant as provided in Section 10 hereof.

     6.   Payroll Deductions.
          ------------------ 

          (a)  At the time a participant files his or her subscription 
agreement, he or she shall elect to have payroll deductions made on each pay day
during the Offering Period in an amount not exceeding ten percent (10%) of the
Compensation which he or she receives on each pay day during the Offering
Period.

          (b)  All payroll deductions made for a participant shall be credited 
to his or her account under the Plan and shall be withheld in whole percentages
only. A participant may not make any additional payments into such account.

          (c)  A participant may discontinue his or her participation in the 
Plan as provided in Section 10 hereof, or may increase or decrease the rate of
his or her payroll deductions during the Offering Period by completing or filing
with the Company a new subscription agreement authorizing a change in payroll
deduction rate. The Board may, in its discretion, limit the number of
participation rate changes during any Offering Period. The change in rate shall
be effective with the first full payroll period commencing after the Company's
receipt of the new subscription agreement unless the Company elects to process a
given change in participation more quickly. A participant's subscription
agreement shall remain in effect for successive Offering Periods unless
terminated as provided in Section 10 hereof.

          (d)  Notwithstanding the foregoing, to the extent necessary to comply
with Section 423(b)(8) of the Code and Section 3(b) hereof, a participant's
payroll deductions may be decreased to zero percent (0%) at such time during any
Current Purchase Period that the aggregate of all payroll deductions which were
previously used to purchase stock under the Plan in a prior Purchase Period
which ended during that calendar year plus all payroll deductions accumulated
with respect to the 

                                      -4-
<PAGE>
 
Current Purchase Period equal twenty-one thousand two hundred fifty dollars
($21,250) or at any time the limit set forth in Section 423(b)(8) of the Code is
likely to be exceeded but for such decrease. Payroll deductions shall recommence
at the rate provided in such participant's subscription agreement at the
beginning of the first Purchase Period which is scheduled to end in the
following calendar year, unless terminated by the participant as provided in
Section 10 hereof.

          (e)  At the time the option is exercised, in whole or in part, or at
the time some or all of the Company's Common Stock issued under the Plan is
disposed of, the participant must make adequate provision for the Company's
federal, state, or other tax withholding obligations, if any, which arise upon
the exercise of the option or the disposition of the Common Stock.  At any time,
the Company may, but shall not be obligated to, withhold from the participant's
compensation the amount necessary for the Company to meet applicable withholding
obligations, including any withholding required to make available to the Company
any tax deductions or benefits attributable to sale or early disposition of
Common Stock by the Employee.

     7.   Grant of Option.  On the Enrollment Date of each Offering Period, each
          ---------------                                                       
eligible Employee participating in such Offering Period shall be granted an
option to purchase on each Exercise Date during such Offering Period (at the
applicable Purchase Price) up to a number of shares of the Company's Common
Stock determined by dividing such Employee's payroll deductions accumulated
prior to such Exercise Date and retained in the Participant's account as of the
Exercise Date by the applicable Purchase Price; provided that in no event shall
an Employee be permitted to purchase during each Purchase Period more than a
number of shares determined by dividing twenty-five thousand dollars ($25,000)
(fifty thousand dollars $50,000 for the first Purchase Period under the Plan) by
the Fair Market Value of a share of the Company's Common Stock on the Enrollment
Date, and provided further that such purchase shall be subject to the
limitations set forth in Sections 3(b) and 12 hereof and in Code Section
423(b)(8).  Exercise of the option shall occur as provided in Section 8 hereof,
unless the participant has withdrawn pursuant to Section 10 hereof.  The option
shall expire on the last day of the Offering Period.

     8.   Exercise of Option.  Unless a participant withdraws from the Plan as
          ------------------                                                  
provided in Section 10 hereof, his or her option for the purchase of shares
shall be exercised automatically on the Exercise Date, and the maximum number of
full shares subject to option shall be purchased for such participant at the
applicable Purchase Price with the accumulated payroll deductions in his or her
account.  No fractional shares shall be purchased; any payroll deductions
accumulated in a participant's account which are not sufficient to purchase a
full share shall be retained in the participant's account for the subsequent
Purchase Period or Offering Period, subject to earlier withdrawal by the
participant as provided in Section 10 hereof.  Any other monies left over in a
participant's account after the Exercise Date shall be returned to the
participant.  During a participant's lifetime, a participant's option to
purchase shares hereunder is exercisable only by him or her.

     9.   Delivery.  As promptly as practicable after each Exercise Date on
          --------                                                         
which a purchase of shares occurs, the Company shall arrange the delivery to
each participant, as appropriate, of a 

                                      -5-
<PAGE>
 
certificate representing the shares purchased upon exercise of his or her option
or shall cause an appropriate entry to be made in participant's brokerage
account reflecting the shares purchased.

     10.  Withdrawal; Termination of Employment.
          ------------------------------------- 

          (a)  A participant may withdraw all but not less than all the payroll
deductions credited to his or her account and not yet used to exercise his or
her option under the Plan at any time by giving written notice to the Company in
the form of Exhibit B to this Plan. All of the participant's payroll deductions
credited to his or her account shall be paid to such participant promptly after
receipt of notice of withdrawal and such participant's option for the Offering
Period shall be automatically terminated, and no further payroll deductions for
the purchase of shares shall be made for such Offering Period. If a participant
withdraws from an Offering Period, payroll deductions shall not resume at the
beginning of the succeeding Offering Period unless the participant delivers to
the Company a new subscription agreement.

          (b)  Upon a participant's ceasing to be an Employee for any reason, 
he or she shall be deemed to have elected to withdraw from the Plan and the
payroll deductions credited to such participant's account during the Offering
Period but not yet used to exercise the option shall be returned to such
participant or, in the case of his or her death, to the person or persons
entitled thereto under Section 14 hereof, and such participant's option shall be
automatically terminated. The preceding sentence notwithstanding, a participant
who receives payment in lieu of notice of termination of employment shall be
treated as continuing to be an Employee for the participant's customary number
of hours per week of employment during the period in which the participant is
subject to such payment in lieu of notice.

          (c)  A participant's withdrawal from an Offering Period shall not 
have any effect upon his or her eligibility to participate in any similar plan
which may hereafter be adopted by the Company or in succeeding Offering Periods
which commence after the termination of the Offering Period from which the
participant withdraws.

     11.  Interest.  No interest shall accrue on the payroll deductions of a
          --------                                                          
participant in the Plan.

     12.  Stock.
          ----- 

          (a)  The maximum number of shares of the Company's Common Stock which 
shall be made available for sale under the Plan shall be four hundred thousand
(400,000) shares, subject to adjustment upon changes in capitalization of the
Company as provided in Section 18 hereof. If, on a given Exercise Date, the
number of shares with respect to which options are to be exercised exceeds the
number of shares then available under the Plan, the Company shall make a pro
rata allocation of the shares remaining available for purchase in as uniform a
manner as shall be practicable and as it shall determine to be equitable.

                                      -6-
<PAGE>
 
          (b)  The participant shall have no interest or voting right in shares
covered by his option until such option has been exercised.

          (c)  Shares to be delivered to a participant under the Plan shall be
registered in the name of the participant or in the name of the participant and
his or her spouse.

     13.  Administration.
          -------------- 

          (a)  Administrative Body.  The Plan shall be administered by the Board
               -------------------                                              
or a committee of members of the Board appointed by the Board. The Board or its
committee shall have full and exclusive discretionary authority to construe,
interpret and apply the terms of the Plan, to determine eligibility and to
adjudicate all disputed claims filed under the Plan. Every finding, decision and
determination made by the Board or its committee shall, to the full extent
permitted by law, be final and binding upon all parties.

          (b)  Rule 16b-3 Limitations.  Notwithstanding the provisions of
               ----------------------                                    
Subsection (a) of this Section 13, in the event that Rule 16b-3 promulgated
under the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or
any successor provision ("Rule 16b-3") provides specific requirements for the
administrators of plans of this type, the Plan shall be administered only by
such a body and in such a manner as shall comply with the applicable
requirements of Rule 16b-3.  Unless permitted by Rule 16b-3, no discretion
concerning decisions regarding the Plan shall be afforded to any committee or
person that is not "disinterested" as that term is used in Rule 16b-3.

     14.  Designation of Beneficiary.
          -------------------------- 

          (a)  A participant may file a written designation of a beneficiary 
who is to receive any shares and cash, if any, from the participant's account
under the Plan in the event of such participant's death subsequent to an
Exercise Date on which the option is exercised but prior to delivery to such
participant of such shares and cash. In addition, a participant may file a
written designation of a beneficiary who is to receive any cash from the
participant's account under the Plan in the event of such participant's death
prior to exercise of the option. If a participant is married and the designated
beneficiary is not the spouse, spousal consent shall be required for such
designation to be effective.

          (b)  Such designation of beneficiary may be changed by the 
participant at any time by written notice. In the event of the death of a
participant and in the absence of a beneficiary validly designated under the
Plan who is living at the time of such participant's death, the Company shall
deliver such shares and/or cash to the executor or administrator of the estate
of the participant, or if no such executor or administrator has been appointed
(to the knowledge of the Company), the Company, in its discretion, may deliver
such shares and/or cash to the spouse or to any one or more dependents or
relatives of the participant, or if no spouse, dependent or relative is known to
the Company, then to such other person as the Company may designate.

                                      -7-
<PAGE>
 
     15.  Transferability.  Neither payroll deductions credited to a
          ---------------                                           
participant's account nor any rights with regard to the exercise of an option or
to receive shares under the Plan may be assigned, transferred, pledged or
otherwise disposed of in any way (other than by will, the laws of descent and
distribution or as provided in Section 14 hereof) by the participant.  Any such
attempt at assignment, transfer, pledge or other disposition shall be without
effect, except that the Company may treat such act as an election to withdraw
funds from an Offering Period in accordance with Section 10 hereof.

     16.  Use of Funds.  All payroll deductions received or held by the Company
          ------------                                                         
under the Plan may be used by the Company for any corporate purpose, and the
Company shall not be obligated to segregate such payroll deductions.

     17.  Reports.  Individual accounts shall be maintained for each participant
          -------                                                               
in the Plan.  Statements of account shall be given to participating Employees at
least annually, which statements shall set forth the amounts of payroll
deductions, the Purchase Price, the number of shares purchased and the remaining
cash balance, if any.

     18.  Adjustments Upon Changes in Capitalization, Dissolution, Liquidation,
          ---------------------------------------------------------------------
          Merger or Asset Sale.
          -------------------- 

          (a)  Changes in Capitalization.  Subject to any required action by the
               -------------------------                                        
shareholders of the Company, the Reserves, the amount of the annual Plan share
replenishment, as well as the price per share and the number of shares of Common
Stock covered by each option under the Plan which has not yet been exercised,
shall be proportionately adjusted for any increase or decrease in the number of
issued shares of Common Stock resulting from a stock split, reverse stock split,
stock dividend, combination or reclassification of the Common Stock, or any
other increase or decrease in the number of shares of Common Stock effected
without receipt of consideration by the Company; provided, however, that
conversion of any convertible securities of the Company shall not be deemed to
have been "effected without receipt of consideration".  Such adjustment shall be
made by the Board, whose determination in that respect shall be final, binding
and conclusive.  Except as expressly provided herein, no issuance by the Company
of shares of stock of any class, or securities convertible into shares of stock
of any class, shall affect, and no adjustment by reason thereof shall be made
with respect to, the number or price of shares of Common Stock subject to an
option.

          (b)  Dissolution or Liquidation.  In the event of the proposed 
               --------------------------       
dissolution or liquidation of the Company, the Offering Periods shall terminate
immediately prior to the consummation of such proposed action, unless otherwise
provided by the Board.

          (c)  Merger or Asset Sale. In the event of a proposed sale of all or
               --------------------                                           
substantially all of the assets of the Company, or the merger of the Company
with or into another corporation, any Purchase Periods then in progress shall be
shortened by setting a new Exercise Date and any Offering Periods then in
progress shall end on the New Exercise Date.  The New Exercise Date shall be
before the date of the Company's proposed sale or merger.  The Board shall
notify each participant in writing, at least ten (10) business days prior to the
New Exercise Date, that the Exercise Date for the 

                                      -8-
<PAGE>
 
participant's option has been changed to the New Exercise Date and that the
participant's option shall be exercised automatically on the New Exercise Date,
unless prior to such date the participant has withdrawn from the Offering Period
as provided in Section 10 hereof.

     19.  Amendment or Termination.
          ------------------------ 

          (a)  The Board of Directors of the Company may at any time and for any
reason terminate or amend the Plan. Except as provided in Section 18 hereof, no
such termination can affect options previously granted, provided that an
Offering Period may be terminated by the Board of Directors on any Exercise Date
if the Board determines that the termination of the Plan is in the best
interests of the Company and its shareholders. Except as provided in Section 18
hereof, no amendment may make any change in any option theretofore granted which
adversely affects the rights of any participant. To the extent necessary to
comply with Rule 16b-3 or under Section 423 of the Code (or any successor rule
or provision or any other applicable law or regulation), the Company shall
obtain shareholder approval in such a manner and to such a degree as required.

          (b)  Without shareholder consent and without regard to whether any
participant rights may be considered to have been "adversely affected," the
Board (or its committee) shall be entitled to change the Offering Periods, limit
the frequency and/or number of changes in the amount withheld during an Offering
Period, establish the exchange ratio applicable to amounts withheld in a
currency other than U.S. dollars, permit payroll withholding in excess of the
amount designated by a participant in order to adjust for delays or mistakes in
the Company's processing of properly completed withholding elections, establish
reasonable waiting and adjustment periods and/or accounting and crediting
procedures to ensure that amounts applied toward the purchase of Common Stock
for each participant properly correspond with amounts withheld from the
participant's Compensation, and establish such other limitations or procedures
as the Board (or its committee) determines in its sole discretion advisable
which are consistent with the Plan.

     20.  Notices.  All notices or other communications by a participant to the
          -------                                                              
Company under or in connection with the Plan shall be deemed to have been duly
given when received in the form specified by the Company at the location, or by
the person, designated by the Company for the receipt thereof.

     21.  Conditions Upon Issuance of Shares.  Shares shall not be issued with
          ----------------------------------                                  
respect to an option unless the exercise of such option and the issuance and
delivery of such shares pursuant thereto shall comply with all applicable
provisions of law, domestic or foreign, including, without limitation, the
Securities Act of 1933, as amended, the Securities Exchange Act of 1934, as
amended, the rules and regulations promulgated thereunder, and the requirements
of any stock exchange upon which the shares may then be listed, and shall be
further subject to the approval of counsel for the Company with respect to such
compliance.

          As a condition to the exercise of an option, the Company may require
the person exercising such option to represent and warrant at the time of any
such exercise that the shares are 

                                      -9-
<PAGE>
 
being purchased only for investment and without any present intention to sell or
distribute such shares if, in the opinion of counsel for the Company, such a
representation is required by any of the aforementioned applicable provisions of
law.

     22.  Term of Plan.  The Plan shall become effective upon the earlier to
          ------------                                                      
occur of its adoption by the Board of Directors or its approval by the
shareholders of the Company.  It shall continue in effect for a term of ten (10)
years unless sooner terminated under Section 19 hereof.

     23.  Automatic Transfer to Low Price Offering Period.  To the extent
          -----------------------------------------------                
permitted by Rule 16b-3 of the Exchange Act, if the Fair Market Value of the
Common Stock on any Exercise Date in an Offering Period is lower than the Fair
Market Value of the Common Stock on the Enrollment Date of such Offering Period,
then all participants in such Offering Period shall be automatically withdrawn
from such Offering Period immediately after the exercise of their option on such
Exercise Date and automatically re-enrolled in the immediately following
Offering Period as of the first day thereof.

                                      -10-
<PAGE>
 
                                   EXHIBIT A
                                   ---------


                                 IA CORPORATION

                       1996 EMPLOYEE STOCK PURCHASE PLAN

                             SUBSCRIPTION AGREEMENT



      Original Application                         Enrollment Date:
- -----                                                               -----------
      Change in Payroll Deduction Rate
- -----                                                               
      Change of Beneficiary(ies)
- -----                                                               


1.                                                         hereby elects to
     -----------------------------------------------------
     participate in the 1996 Employee Stock Purchase Plan (the "Employee Stock
     Purchase Plan") and subscribes to purchase shares of the Company's Common
     Stock in accordance with this Subscription Agreement and the Employee Stock
     Purchase Plan.

2.   I hereby authorize payroll deductions from each paycheck in the amount of
         % of my Compensation on each payday (from 1 to 10%) during the Offering
     ----
     Period in accordance with the Employee Stock Purchase Plan.  (Please note
     that no fractional percentages are permitted.)

3.   I understand that said payroll deductions shall be accumulated for the
     purchase of shares of Common Stock at the applicable Purchase Price
     determined in accordance with the Employee Stock Purchase Plan.  I
     understand that if I do not withdraw from an Offering Period, any
     accumulated payroll deductions will be used to automatically exercise my
     option.

4.   I have received a copy of the complete Employee Stock Purchase Plan. I
     understand that my participation in the Employee Stock Purchase Plan is in
     all respects subject to the terms of the Plan.

5.   Shares purchased for me under the Employee Stock Purchase Plan should be
     issued in the name(s) of (Employee or Employee and Spouse only):
     
     ---------------------------------------------------------------------------
                 .
     ------------

6.   I understand that if I dispose of any shares received by me pursuant to the
     Plan within two (2) years after the Enrollment Date (the first day of the
     Offering Period during which I purchased such shares) or one (1) year after
     the Exercise Date, I will be treated for federal income tax purposes as
     having received ordinary income at the time of such disposition in an
     amount equal to the excess of the fair market value of the shares at the
     time such shares were 

                                      -1-
<PAGE>
 
     purchased by me over the price which I paid for the shares. I hereby agree
                                                                 --------------
     to notify the Company in writing within thirty (30) days after the date of
     --------------------------------------------------------------------------
     any disposition of my shares and I will make adequate provision for
     -------------------------------------------------------------------
     Federal, state or other tax withholding obligations, if any, which arise
     ------------------------------------------------------------------------
     upon the disposition of the Common Stock. The Company may, but will not be
     ----------------------------------------
     obligated to, withhold from my compensation the amount necessary to meet
     any applicable withholding obligation including any withholding necessary
     to make available to the Company any tax deductions or benefits
     attributable to sale or early disposition of Common Stock by me. If I
     dispose of such shares at any time after the expiration of the two (2) year
     and one (1) year holding periods, I understand that I will be treated for
     federal income tax purposes as having received income only at the time of
     such disposition, and that such income will be taxed as ordinary income
     only to the extent of an amount equal to the lesser of (a) the excess of
     the fair market value of the shares at the time of such disposition over
     the purchase price which I paid for the shares, or (b) 15% of the fair
     market value of the shares on the first day of the Offering Period. The
     remainder of the gain, if any, recognized on such disposition will be taxed
     as capital gain.

7.   I hereby agree to be bound by the terms of the Employee Stock Purchase
     Plan. The effectiveness of this Subscription Agreement is dependent upon
     my eligibility to participate in the Employee Stock Purchase Plan.

8.   In the event of my death, I hereby designate the following as my
     beneficiary(ies) to receive all payments and shares due me under the
     Employee Stock Purchase Plan:

NAME:  (Please print)
                     ---------------------------------------------------
                        (First)         (Middle)               (Last)

- ------------------------------        ----------------------------------
Relationship                                        Address

Employee's Social Security Number:    
                                      ----------------------------------

Employee's Address:           
                                      ----------------------------------


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

I UNDERSTAND THAT THIS SUBSCRIPTION AGREEMENT SHALL REMAIN IN EFFECT THROUGHOUT
SUCCESSIVE OFFERING PERIODS UNLESS TERMINATED BY ME.

Dated:
      ------------------------        ----------------------------------
                                      Signature of Employee


                                      ----------------------------------
                                      Spouse's Signature (If beneficiary 
                                      other than spouse)

                                      -2-
<PAGE>
 
                                   EXHIBIT B
                                   ---------


                                 IA CORPORATION

                       1996 EMPLOYEE STOCK PURCHASE PLAN

                              NOTICE OF WITHDRAWAL



     The undersigned participant in the Offering Period of the IA Corporation
1996 Employee Stock Purchase Plan which began on             ,      (the
                                                 ------------  ----
"Enrollment Date") hereby notifies the Company that he or she hereby withdraws
from the Offering Period.  He or she hereby directs the Company to pay to the
undersigned as promptly as practicable all the payroll deductions credited to
his or her account with respect to such Offering Period. The undersigned
understands and agrees that his or her option for such Offering Period will be
automatically terminated.  The undersigned under  stands further that no further
payroll deductions will be made for the purchase of shares in the current
Offering Period and the undersigned shall be eligible to participate in
succeeding Offering Periods only by delivering to the Company a new Subscription
Agreement.

                                      Name and Address of Participant:

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

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

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


                                      Signature:


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


                                      Date:
                                           -----------------------------

                                      -3-

<PAGE>
 
                                                                     EXHIBIT 5.1



                               August 14, 1997


IA Corporation I
1900 Powell Street, Suite 600
Emeryville, California 94608-1840

     RE:  REGISTRATION STATEMENT ON FORM S-8
          ----------------------------------

Ladies and Gentlemen:

     We have examined the Registration Statement on Form S-8 to be filed by you
with the Securities and Exchange Commission on or about August 14, 1997 (the
"Registration Statement") in connection with the registration under the
Securities Act of 1933, as amended, of an aggregate of 1,100,000 shares of your
Common Stock (the "Shares") reserved for issuance under the 1996 Stock Plan and
the 1996 Employee Stock Purchase Plan (collectively, the "Plans"). As your legal
counsel, we have examined the proceedings taken and are familiar with the
proceedings proposed to be taken by you in connection with the sale and issuance
of the Shares under the Plans.

     It is our opinion that, when issued and sold in the manner referred to in
the Plans and pursuant to the respective agreements which accompany each grant
under the Plans, the Shares will be legally and validly issued, fully paid and
nonassessable.

     We consent to the use of this opinion as an exhibit to the Registration
Statement and further consent to the use of our name wherever it appears in the
Registration Statement and any amendment thereto.


                              Very truly yours,
 
                              WILSON SONSINI GOODRICH & ROSATI
                              Professional Corporation


                              /s/ WILSON SONSINI GOODRICH & ROSATI 

<PAGE>
 
                                                                    EXHIBIT 23.2

              CONSENT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS

     We consent to the incorporation by reference in the Registration
Statement (Form S-8) pertaining to the 1996 Stock Plan and the 1996 Employee
Stock Purchase Plan of IA Corporation I of our report dated January 29, 1997,
with respect to the consolidated financial statements and schedule of IA
Corporation I included in its Annual Report (Form 10-K) for the year ended
December 31, 1996, filed with the Securities and Exchange Commission.

                                                                              
                                                        /s/ Ernst & Young, LLP


Walnut Creek, California
August 13, 1997



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