RATIONAL SOFTWARE CORP
S-8, 1997-02-11
PREPACKAGED SOFTWARE
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<PAGE>
 
      As filed with the Securities and Exchange Commission on February 11, 1997
                                               Registration No. 333-__________
===============================================================================

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


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

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

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


                         RATIONAL SOFTWARE CORPORATION
                         -----------------------------
                         (formerly Verdix Corporation)
             (Exact name of Registrant as specified in its charter)


        Delaware                                       54-1217099
- -----------------------                 ---------------------------------------
(State of incorporation)                (I.R.S. Employer (Identification Number)


                           2800 San Tomas Expressway
                         Santa Clara, California 95051
                    (Address of principal executive offices)

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

                   Requisite, Inc. 1994 Stock Option Plan


                            (Full title of the Plan)

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


                                 Robert T. Bond
                Senior Vice President, Chief Operating Officer,
                     Chief Financial Officer and Secretary
                         RATIONAL SOFTWARE CORPORATION
                           2800 San Tomas Expressway
                         Santa Clara, California  95051
                    (Name and address of agent for service)



                                 (408) 496-3600
         (Telephone number, including area code, of agent for service)

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

                                   Copies to:

                       Christopher G. Nicholson, Esq.
                      WILSON SONSINI GOODRICH & ROSATI
                             650 Page Mill Road
                      Palo Alto, California 94304-1050
<TABLE>  
<CAPTION> 
                                   CALCULATION OF REGISTRATION FEE

                                                 Proposed          Proposed
                                                 Maximum           Maximum     
Title of Securities            Amount to be   Offering Price      Aggregate            Amount of
to be Registered                Registered     Per Share(1)     Offering Price(2)   Registration Fee(3) 
=======================================================================================================
<S>                             <C>           <C>               <C>                <C>    
Common Stock, 
$0.01 par  value:                6,450           $1.8389             10,180.12          $4.00
=======================================================================================================
</TABLE>
(1)  2,040 of the shares to be registered underlie options exercisable at
     $1.0151 per share; the remaining 4,410 shares to be registered underlie
     options exercisable at $1.8389 per share.

(2)  The proposed maximum offering price was calculated pursuant to Rule
     457(h) under the Securities Act.

(3)   Rounded up to nearest dollar.
<PAGE>
 
                         RATIONAL SOFTWARE CORPORATION
                       REGISTRATION STATEMENT ON FORM S-8

                                    PART II

               INFORMATION REQUIRED IN THE 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 Registrant's Annual Report on Form 10-K for the year ended
March 31, 1996, as amended, filed with the Commission.

         (b)  The Registrant's Quarterly Reports on Form 10-Q for the quarterly
periods ended June 30, 1996, and September 30, 1996, filed with the Commission.

              The Registrant's Current Reports on Form 8-K dated October 2,
1996, October 3, 1996, as amended, and December 6, 1996, filed with the
Commission.

         (c)  The description of the Registrant's Common Stock contained in the
Registration Statement on Form S-4 (File No. 333-19669) initially filed by the
Registrant with the Commission on January 13, 1997, and any amendment or report
filed hereafter for the purpose of updating such description.

              Item 1 of Registrant's Form 8-A dated May 25, 1984 as amended on
Form 8-A/A dated May 25, 1995, filed with the Commission.

         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.
         ----------------------------------------- 

         Section 145 of the Delaware General Corporation Law authorizes a court
to award, or a corporation's Board of Directors to grant, indemnify to directors
and officers in terms sufficiently broad to permit such indemnification under
certain circumstances for liabilities (including reimbursement for expenses
incurred) arising under the Securities Act of 1933, as amended. The Registrant's
Certificate of Incorporation, as amended, and Bylaws provide for indemnification
of its officers, directors, employees and other agents to the 

                                      II-1
<PAGE>
 
maximum extent permitted by the Delaware Law. In addition, the Registrant has
entered into Indemnification Agreements with its officers and directors.

Item 7.  Exemption from Registration Claimed.
         ----------------------------------- 
        
         Not applicable.
 
Item 8.  Exhibits.
         ---------
 
           Exhibit
           Number                       Description
          --------        --------------------------------------------
            4.1           Requisite, Inc. 1994 Stock Option Plan
            5.1           Opinion of Wilson Sonsini Goodrich & Rosati, P.C. 
                           with respect to the securities  being registered.
            23.1          Consent of Ernst & Young LLP, Independent Accountants
            23.2          Consent of Counsel (contained in Exhibit 5.1)
            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 the time shall be deemed to be the initial bona
fide offering thereof.

              (3)  To remove from registration by means of a post-effective
amendment any of the securities being registered which remain unsold at the
termination of the offering.

         (b)  The undersigned Registrant hereby undertakes that, for purposes of
determining 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 General Corporations 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 

                                      II-2
<PAGE>
 
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 the 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 the such issue.

                                      II-3
<PAGE>
 
                                   SIGNATURES

     Pursuant to the requirements of Section 13 or 15(d) 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 Santa Clara, State of
California, on February 11, 1997.

                                        RATIONAL SOFTWARE CORPORATION


                                        By:    /s/ Robert T. Bond
                                        ---------------------------------------
                                        Robert T. Bond
                                        Senior Vice President, Chief Operating 
                                          Officer, Chief
                                        Financial Officer and Secretary


                               POWER OF ATTORNEY

     KNOW ALL THESE PERSONS BY THESE PRESENTS, that each person whose signature
appears below constitutes and appoints Paul D. Levy and Robert T. Bond and each
of them, jointly and severally, his attorneys-in-fact, each with full power of
substitution, for him 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 said
attorneys-in-fact or his 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 by the following persons in the
capacities and on the dates indicated:

<TABLE>
<CAPTION>
<S>                             <C> 
Date:  February 11, 1997        /s/ Michael T. Devlin
                                ----------------------------------------------
                                Michael T. Devlin, President and Director

Date:  February 11, 1997        /s/ Paul D. Levy
                                ----------------------------------------------
                                Paul D. Levy, Chairman of the Board and Chief
                                  Executive Officer

Date:  February 11, 1997        /s/ Robert T. Bond
                                ----------------------------------------------
                                Robert T. Bond, Senior Vice President
                                  Chief Operating Officer, Chief Financial 
                                  Officer and Secretary

Date:  February 11, 1997        /s/ James S. Campbell
                                ----------------------------------------------
                                James S. Campbell, Director

Date:  February 11, 1997        /s/ Daniel H. Case III
                                ----------------------------------------------
                                Daniel H. Case III, Director

Date:  February 11, 1997        /s/ Leslie G. Denend
                                ----------------------------------------------
                                Leslie G. Denend, Director

Date:  February 11, 1997        /s/ John E. Montague
                                ----------------------------------------------
                                John E. Montague, Director

Date:  February 11, 1997        /s/ Allison R. Schleicher
                                ----------------------------------------------
                                Allison R. Schleicher, Director

Date:  February 11, 1997        /s/ Timothy A. Brennan
                                ----------------------------------------------
                                Timothy A. Brennan, Vice President, Finance and 
                                  Administration (Principal Accounting Officer)
</TABLE>

                                      II-4

<PAGE>
 
                                                                     Exhibit 4.1
                                                                     -----------

                                REQUISITE, INC.

                               STOCK OPTION PLAN

               ADOPTED BY THE BOARD OF DIRECTORS ON JUNE 1, 1994
                  APPROVED BY THE STOCKHOLDERS ON JUNE 1, 1994
             AS AMENDED BY THE BOARD OF DIRECTORS ON APRIL 23, 1996


  1. Purposes.
     -------- 

     (a) The purpose of the Plan is to provide a means by which selected
Employees and Directors of and Consultants to the Company, and its Affiliates,
may be given an opportunity to purchase stock of the Company.

     (b) The Company, by means of the Plan, seeks to retain the services of
persons who are now Employees or Directors of or Consultants to the Company or
its Affiliates, to secure and retain the services of new Employees, Directors
and Consultants, and to provide incentives for such persons to exert maximum
efforts for the success of the Company and its Affiliates.

     (c) The Company intends that the Options issued under the Plan shall, in
the discretion of the Board or any Committee to which responsibility for
administration of the Plan has been delegated pursuant to subsection 3(c), be
either Incentive Stock Options or Nonstatutory Stock Options. All Options shall
be separately designated Incentive Stock Options or Nonstatutory Stock Options
at the time of grant, and in such form as issued pursuant to Section 6, and a
separate certificate or certificates will be issued for shares purchased on
exercise of each type of Option.

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

     (a) "Affiliate" means any parent corporation or subsidiary corporation,
whether now or hereafter existing, as those terms are defined in Sections 424(e)
and (f) respectively, of the Code.

     (b) "Board" means the Board of Directors of the Company.

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

     (d) "Committee" means a Committee appointed by the Board in accordance with
subsection 3(c) of the Plan.

     (e) "Company" means Requisite, Inc., a Colorado corporation.

     (f) "Consultant" means any person, including an advisor, engaged by the
Company or an Affiliate to render consulting services, provided that the term
"Consultant" shall 
<PAGE>
 
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.

     (g) "Continuous Status as an Employee, Director or Consultant" means the
employment or relationship as a Director or Consultant is not interrupted or
terminated.  The Board, in its sole discretion, may determine whether Continuous
Status as an Employee, Director or Consultant shall be considered interrupted in
the case of:  (i) any leave of absence approved by the Board, including sick
leave, military leave, or any other personal leave; or (ii) transfers between
locations of the Company or between the Company, Affiliates or their successors.

     (h) "Director" means a member of the Board.

     (i) "Disinterested Person" means a Director:  who either (i) was not during
the one year prior to service as an administrator of the Plan granted or awarded
equity securities pursuant to the Plan or any other plan of the Company or any
of its affiliates entitling the participants therein to acquire equity
securities of the Company or any of its affiliates except as permitted by Rule
16b-3(c)(2)(i); or (ii) is otherwise considered to be a "disinterested person"
in accordance with Rule 16b-3(c)(2)(i), or any other applicable rules,
regulations or interpretations of the Securities and Exchange Commission.

     (j) "Employee" means any person, including Officers and Directors, employed
by the Company or any Affiliate 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.

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

     (l) "Fair Market Value" means the value of the common stock as determined
in good faith by the Board.

     (m) "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.

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

     (o) "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.

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

     (q) "Option Agreement" means a written agreement between the Company and an
Optionee evidencing the terms and conditions of an individual Option grant.
Each Option Agreement shall be subject to the terms and conditions of the Plan.

     (r) "Optionee" means an Employee, Director or Consultant who holds an
outstanding Option.

                                      -2-
<PAGE>
 
     (s) "Plan" means this 1994 Stock Option Plan.

     (t) "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.

   3. Administration.
      -------------- 

      (a) The Plan shall be administered by the Board unless and until the Board
delegates administration to a Committee, as provided in subsection 3(c).

      (b) The Board shall have the power, subject to, and within the limitations
of, the express provisions of the Plan:

          (1) To determine from time to time which of the persons eligible under
the Plan shall be granted Options; when and how each Option shall be granted;
whether an Option will be an Incentive Stock Option or a Nonstatutory Stock
Option; the provisions of each Option granted (which need not be identical),
including the time or times such Option may be exercised in whole or in part;
and the number of shares for which an Option shall be granted to each such
person.

          (2) To construe and interpret the Plan and Options granted under it,
and to establish, amend and revoke rules and regulations for its administration.
The Board, in the exercise of this power, may correct any defect, omission or
inconsistency in the Plan or in any Option Agreement in a manner and to the
extent it shall deem necessary or expedient to make the Plan fully effective.

          (3) To amend the Plan as provided in Section 11.

          (4) Generally, to exercise such powers and to perform such acts as the
Board deems necessary or expedient to promote the best interests of the Company.

      (c) The Board may delegate administration of the Plan to a committee
composed of not fewer than two (2) members (the "Committee"), all of the members
of which Committee shall be Disinterested Persons if required by the provisions
of subsection 3(d). If administration is delegated to a Committee, the Committee
shall have, in connection with the administration of the Plan, the powers
theretofore possessed by the Board (and references in this Plan to the Board
shall thereafter be to the Committee), subject, however, to such resolutions,
not inconsistent with the provisions of the Plan, as may be adopted from time to
time by the Board. The Board may abolish the Committee at any time and revest in
the Board the administration of the Plan. Additionally, prior to the date of the
first registration of an equity security of the Company under Section 12 of the
Exchange Act, and notwithstanding anything to the contrary contained herein, the
Board may delegate administration of the Plan to any person or persons and the
term "Committee" shall apply to any person or persons to whom such authority has
been delegated. Notwithstanding anything in this Section 3 to the contrary, the
Board or the Committee may delegate to a committee of one or more members of the
Board the authority to grant Options to eligible persons who are not then
subject to Section 16 of the Exchange Act.

                                      -3-
<PAGE>
 
      (d) Any requirement that an administrator of the Plan be a Disinterested
Person shall not apply (i) prior to the date of the first registration of an
equity security of the Company under Section 12 of the Exchange Act, or (ii) if
the Board or the Committee expressly declares that such requirement shall not
apply.  Any Disinterested Person shall otherwise comply with the requirements of
Rule 16b-3.

   4. Shares Subject To The Plan.
      -------------------------- 

      (a) Subject to the provisions of Section 10 relating to adjustments upon
changes in stock, the stock that may be sold pursuant to Options shall not
exceed in the aggregate six hundred fifty thousand (650,000) shares of the
Company's common stock.  If any Option shall for any reason expire or otherwise
terminate, in whole or in part, without having been exercised in full, the stock
not purchased under such Option shall revert to and again become available for
issuance under the Plan.

      (b) The stock subject to the Plan may be unissued shares or reacquired
shares, bought on the market or otherwise.

   5. Eligibility.
      ----------- 

      (a) Incentive Stock Options may be granted only to Employees. Nonstatutory
Stock Options may be granted only to Employees, Directors or Consultants.

      (b) A Director shall in no event be eligible for the benefits of the Plan
unless at the time discretion is exercised in the selection of the Director as a
person to whom Options may be granted, or in the determination of the number of
shares which may be covered by Options granted to the Director:  (i) the Board
has delegated its discretionary authority over the Plan to a Committee which
consists solely of Disinterested Persons; or (ii) the Plan otherwise complies
with the requirements of Rule 16b-3.  The Board shall otherwise comply with the
requirements of Rule 16b-3.  This subsection 5(b) shall not apply (i) prior to
the date of the first registration of an equity security of the Company under
Section 12 of the Exchange Act, or (ii) if the Board or Committee expressly
declares that it shall not apply.

       (c) No person shall be eligible for the grant of an Incentive Stock
Option if, at the time of grant, such person owns (or is deemed to own pursuant
to Section 424(d) of the Code) stock possessing more than ten percent (10%) of
the total combined voting power of all classes of stock of the Company or of any
of its Affiliates unless the exercise price of such Option is at least one
hundred ten percent (110%) of the Fair Market Value of such stock at the date of
grant and the Option is not exercisable after the expiration of five (5) years
from the date of grant.

   6. Option Provisions.  Each Option shall be in such form and shall contain
      -----------------
such terms and conditions as the Board shall deem appropriate. The provisions of
separate Options need not be identical, but each Option shall include (through
incorporation of provisions hereof by reference in the Option or otherwise) the
substance of each of the following provisions:

      (a) Term.  No Option shall be exercisable after the expiration of ten (10)
          ----                                                                  
years from the date it was granted.

                                      -4-
<PAGE>
 
      (b) Price.  The exercise price of each Incentive Stock Option shall be not
          -----                                                                 
less than one hundred percent (100%) of the Fair Market Value of the stock
subject to the Option on the date the Option is granted.  The exercise price of
each Nonstatutory Stock Option shall be not less than eighty five percent (85%)
of the Fair Market Value of the stock subject to the Option on the date the
Option is granted.

      (c) Consideration.  The purchase price of stock acquired pursuant to an
          -------------
Option shall be paid, to the extent permitted by applicable statutes and
regulations, either (i) in cash at the time the Option is exercised, or (ii) at
the discretion of the Board or the Committee, either at the time of the grant or
exercise of the Option, (A) by delivery to the Company of other common stock of
the Company, (B) according to a deferred payment or other arrangement (which may
include, without limiting the generality of the foregoing, the use of other
common stock of the Company) with the person to whom the Option is granted or to
whom the Option is transferred pursuant to subsection 6(d), or (C) in any other
form of legal consideration that may be acceptable to the Board.

    In the case of any deferred payment arrangement, interest shall be payable
at least annually and shall be charged at the minimum rate of interest necessary
to avoid the treatment as interest, under any applicable provisions of the Code,
of any amounts other than amounts stated to be interest under the deferred
payment arrangement.

      (d) Transferability.  An Option shall not be transferable except by will
          ---------------
or by the laws of descent and distribution, and shall be exercisable during the
lifetime of the person to whom the Option is granted only by such person. The
person to whom the Option is granted may, by delivering written notice to the
Company, in a form satisfactory to the Company, designate a third party who, in
the event of the death of the Optionee, shall thereafter be entitled to exercise
the Option.

      (e) Vesting.  The total number of shares of stock subject to an Option
          -------
may, but need not, be allotted in periodic installments (which may, but need
not, be equal). The Option Agreement may provide that from time to time during
each of such installment periods, the Option may become exercisable ("vest")
with respect to some or all of the shares allotted to that period, and may be
exercised with respect to some or all of the shares allotted to such period
and/or any prior period as to which the Option became vested but was not fully
exercised. The Option may be subject to such other terms and conditions on the
time or times when it may be exercised (which may be based on performance or
other criteria) as the Board may deem appropriate. The provisions of this
subsection 6(e) are subject to any Option provisions governing the minimum
number of shares as to which an Option may be exercised.

      (f) Securities Law Compliance.  The Company may require any Optionee, or
          -------------------------
any person to whom an Option is transferred under subsection 6(d), as a
condition of exercising any such Option, (1) to give written assurances
satisfactory to the Company as to the Optionee's knowledge and experience in
financial and business matters and/or to employ a purchaser representative
reasonably satisfactory to the Company who is knowledgeable and experienced in
financial and business matters, and that he or she is capable of evaluating,
alone or together with the purchaser representative, the merits and risks of
exercising the Option; and (2) to give written assurances satisfactory to the
Company stating that such person is acquiring the stock subject to 

                                      -5-
<PAGE>
 
the Option for such person's own account and not with any present intention of
selling or otherwise distributing the stock. The foregoing requirements, and any
assurances given pursuant to such requirements, shall be inoperative if (i) the
issuance of the shares upon the exercise of the Option has been registered under
a then currently effective registration statement under the Securities Act of
1933, as amended (the "Securities Act"), or (ii) as to any particular
requirement, a determination is made by counsel for the Company that such
requirement need not be met in the circumstances under the then applicable
securities laws. The Company may, upon advice of counsel to the Company, place
legends on stock certificates issued under the Plan as such counsel deems
necessary or appropriate in order to comply with applicable securities laws,
including, but not limited to, legends restricting the transfer of the stock.

      (g) Termination of Employment or Relationship as a Director or Consultant.
          ---------------------------------------------------------------------
In the event an Optionee's Continuous Status as an Employee, Director or
Consultant terminates (other than upon the Optionee's death or disability), the
Optionee may exercise his or her Option (to the extent that the Optionee was
entitled to exercise it at the date of termination) but only within such period
of time ending on the date three (3) months after the termination of the
Optionee's Continuous Status as an Employee, Director or Consultant (or such
longer or shorter period specified in the Option Agreement). If, after
termination, the Optionee does not exercise his or her Option within the time
specified in the Option Agreement, the Option shall terminate, and the shares
covered by such Option shall revert to and again become available for issuance
under the Plan.

      (h) Disability of Optionee.  In the event an Optionee's Continuous Status
          ----------------------
as an Employee, Director or Consultant terminates as a result of the Optionee's
disability, the Optionee may exercise his or her Option (to the extent that the
Optionee was entitled to exercise it as the date of termination), but only
within such period of time ending on the earlier of (i) the date twelve (12)
months following such termination (or such longer or shorter period specified in
the Option Agreement), or (ii) the expiration of the term of the Option as set
forth in the Option Agreement. If, at 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 and again become available
for issuance under 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 and again
become available for issuance under the Plan.

      (i) Death of Optionee.  In the event of the death of an Optionee during,
          -----------------
or within a period specified in the Option after the termination of, the
Optionee's Continuous Status as an Employee, Director or Consultant, the Option
may be exercised (to the extent the Optionee was entitled to exercise the Option
at the date of death) by the Optionee's estate or by a person who acquired the
right to exercise the Option by bequest or inheritance, but only within the
period ending on the earlier of (i) the date twelve (12) months following the
date of death (or such longer or shorter period specified in the Option
Agreement), or (ii) the expiration of the term of such Option as set forth in
the Option Agreement. If, at the time of death, the Optionee was not entitled to
exercise his or her entire Option, the shares covered by the unexercisable
portion of the Option shall revert to and again become available for issuance
under the Plan. If, after death, the Option is not exercised within the term
specified herein, the Option shall terminate, and the shares covered by such
Option shall revert to and again become available for issuance under the Plan.

                                      -6-
<PAGE>
 
      (j) Early Exercise.  The Option may, but need not, include a provision
          --------------
whereby the Optionee may elect at any time while an Employee, Director or
Consultant to exercise the Option as to any part or all of the shares subject to
the Option prior to the full vesting of the Option. Any unvested shares so
purchased may be subject to a repurchase right in favor of the Company or to any
other restriction the Board determines to be appropriate.

      (k) Withholding.  To the extent provided by the terms of an Option
          -----------
Agreement, the Optionee may satisfy any federal, state or local tax withholding
obligation relating to the exercise of such Option by any of the following means
or by a combination of such means: (1) tendering a cash payment; (2) authorizing
the Company to withhold shares from the shares of the common stock otherwise
issuable to the Optionee as a result of the exercise of the Option; or (3)
delivering to the Company owned and unencumbered shares of the common stock of
the Company.

   7. Covenants Of The Company.
      ------------------------ 

      (a) During the terms of the Options, the Company shall keep available at
all times the number of shares of stock required to satisfy such Options.

      (b) The Company shall seek to obtain from each regulatory commission or
agency having jurisdiction over the Plan such authority as may be required to
issue and sell shares of stock upon exercise of the Options; provided, however,
that this undertaking shall not require the Company to register under the
Securities Act either the Plan, any Option or any stock issued or issuable
pursuant to any such Option. If, after reasonable efforts, the Company is unable
to obtain from any such regulatory commission or agency the authority which
counsel for the Company deems necessary for the lawful issuance and sale of
stock under the Plan, the Company shall be relieved from any liability for
failure to issue and sell stock upon exercise of such Options unless and until
such authority is obtained.

   8. Use Of Proceeds From Stock.  Proceeds from the sale of stock pursuant to
      --------------------------                                              
Options shall constitute general funds of the Company.

   9. Miscellaneous.
      ------------- 

      (a) The Board shall have the power to accelerate the time at which an
Option may first be exercised or the time during which an Option or any part
thereof will vest pursuant to subsection 6(e), notwithstanding the provisions in
the Option stating the time at which it may first be exercised or the time
during which it will vest.

      (b) Neither an Optionee nor any person to whom an Option is transferred
under subsection 6(d) shall be deemed to be the holder of, or to have any of the
rights of a holder with respect to, any shares subject to such Option unless and
until such person has satisfied all requirements for exercise of the Option
pursuant to its terms.

      (c) Nothing in the Plan or any instrument executed or Option granted
pursuant thereto shall confer upon any Employee, Director or Consultant or
Optionee any right to continue in the employ of the Company or any Affiliate (or
to continue acting as a Director or Consultant) 

                                      -7-
<PAGE>
 
or shall affect the right of the Company or any Affiliate to terminate the
employment or relationship as a Director or Consultant of any Employee,
Director, Consultant or Optionee with or without cause.

      (d) To the extent that the aggregate Fair Market Value (determined at the
time of grant) of stock with respect to which Incentive Stock Option granted
after 1986 are exercisable for the first time by any Optionee during any
calendar year under all plans of the Company and its Affiliates exceeds one
hundred thousand dollars ($100,000), the Options or portions thereof which
exceed such limit (according to the order in which they were granted) shall be
treated as Nonstatutory Stock Options.

  10. Adjustments Upon Changes In Stock.
      --------------------------------- 

      (a) If any change is made in the stock subject to the Plan, or subject to
any Option (through merger, consolidation, reorganization, recapitalization,
stock dividend, dividend in property other than cash, stock split, liquidating
dividend, combination of shares, exchange of shares, change in corporate
structure or otherwise), the Plan and outstanding Options will be appropriately
adjusted in the class(es) and maximum number of shares subject to the Plan and
the class(es) and number of shares and price per share of stock subject to
outstanding Options.

      (b) In the event of: (1) a dissolution, liquidation or sale of
substantially all of the assets of the Company or (2) a Change of Control (as
hereinafter defined), with respect to each Optionee immediately prior to such
Change of Control the vesting under all outstanding Options shall automatically
accelerate by 12 months (e.g., that number of shares shall be immediately vested
as would have been vested on the date 12 months after the date of the Change of
Control), then to the extent permitted by applicable law: (i) any surviving
corporation shall assume any Options outstanding under the Plan or shall
substitute similar Options for those outstanding under the Plan, or (ii) such
Options shall continue in full force and effect. In the event any surviving
corporation refuses to assume or continue such Options, or to substitute similar
options for those outstanding under the Plan, then, with respect to Options held
by persons then performing services as Employees, Directors or Consultants, the
time during which such Options may be exercised shall be accelerated and the
Option terminated if not exercised prior to such event.

  For purposes of this Plan, "Change of Control" shall mean:  any consolidation
or merger of the Company with or into any other entity or person, or any other
corporate reorganization in which the Company shall not be the continuing or
surviving entity, or any transaction or related transactions by the Company in
which in excess of 50% of the Company's voting power is transferred, or any
sale, lease, license or other disposition of all or substantially all of the
assets of the Company.  The continuing or surviving organization entity shall be
deemed the acquiror for purposes of this subsection of the Plan.

  11. Amendment Of The Plan.
      --------------------- 

      (a) The Board at any time, and from time to time, may amend the Plan.
However, except as provided in Section 10 relating to adjustments upon changes
in stock, no 

                                      -8-
<PAGE>
 
amendment shall be effective unless approved by the stockholders of the Company
within twelve (12) months before or after the adoption of the amendment, where
the amendment will:

          (1) Increase the number of shares reserved for Options under the Plan;

          (2) Modify the requirements as to eligibility for participation in the
Plan (to the extent such modification requires stockholder approval in order for
the Plan to satisfy the requirements of Section 422 of the Code); or

          (3) Modify the Plan in any other way if such modification requires
stockholder approval in order for the Plan to satisfy the requirements of
Section 422 of the Code or to comply with the requirements of Rule 16b-3.

      (b) It is expressly contemplated that the Board may amend the Plan in any
respect the Board deems necessary or advisable to provide Optionees with the
maximum benefits provided or to be provided under the provisions of the Code and
the regulations promulgated thereunder relating to Incentive Stock Options
and/or to bring the Plan and/or Incentive Stock Options granted under it into
compliance therewith.

      (c) Rights and obligations under any Option granted before amendment of
the Plan shall not be altered or impaired by any amendment of the Plan unless
(i) the Company requests the consent of the person to whom the Option was
granted and (ii) such person consents in writing.

  12. Termination Or Suspension Of The Plan.
      ------------------------------------- 

      (a) The Board may suspend or terminate the Plan at any time. Unless sooner
terminated, the Plan shall terminate on May 31, 2004 which shall be within ten
(10) years from the date the Plan is adopted by the Board or approved by the
stockholders of the Company, whichever is earlier. No Options may be granted
under the Plan while the Plan is suspended or after it is terminated.

      (b) Rights and obligations under any Option granted while the Plan is in
effect shall not be altered or impaired by suspension or termination of the
Plan, except with the consent of the person to whom the Option was granted.

  13. Effective Date Of Plan.  The Plan shall become effective as determined by
      ----------------------                                                   
the Board, but no Options granted under the Plan shall be exercised unless and
until the Plan has been approved by the stockholders of the Company, which
approval shall be within twelve (12) months before or after the date the Plan is
adopted by the Board.

                                      -9-

<PAGE>
 
                                                                     Exhibit 5.1
                       WILSON SONSINI GOODRICH & ROSATI
                            PROFESSIONAL CORPORATION


                               650 PAGE MILL ROAD
                       PALO ALTO, CALIFORNIA 94304-1050        JOHN ARNOT WILSON
                TELEPHONE 415-493-9300   FACSIMILE 415-493-6811     RETIRED
  
                

                               February 11, 1997

Rational Software Corporation
2800 San Tomas Expressway
Santa Clara, CA  95051

   Re:  Registration Statement on Form S-8 - Requisite, Inc. 
        ----------------------------------------------------------------------
        1994 Stock Option Plan
        ----------------------


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 February 11, 1997 (the
"Registration Statement"), in connection with the registration under the
Securities Act of 1933, as amended, of 6,450 shares of Rational Software
Corporation (the "Company") Common Stock (the "Option Shares"), to be issued
pursuant to the exercise of options issued under the Requisite, Inc. 1994 Stock
Option Plan (the "Plan") which were assumed by the Company in connection with
its acquisition of Requisite, Inc. As your counsel in connection with the
transaction, we have examined the proceedings taken and proposed to be taken in
connection with the issuance and sale of the Option Shares. We assume that the
consideration received by the Company in connection with each issuance of 
Option Shares will include an amount in the form of cash, services rendered or 
property that exceeds the greater of (i) the aggregate par value of such 
Option Shares or (ii) the portion of such consideration determined by the 
Company's Board of Directors to be "capital" for purposes of the Delaware 
General Corporation Law.

   Based on the foregoing, it is our opinion that the Option Shares, when
issued and sold in the manner described under the Plan, will be legally and
validly issued, fully paid and non-assessable.

     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 appearing in the
Registration Statement and any amendments thereto.

                                        Very truly yours,

                                        WILSON SONSINI GOODRICH & ROSATI
                                        Professional Corporation

                                        /s/ Wilson Sonsini Goodrich & Rosati

<PAGE>
 
                                                                    Exhibit 23.1
                                                                    ------------



               CONSENT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS

    We consent to the incorporation by reference in the Registration Statement
(Form S-8) pertaining to the Requisite, Inc. 1994 Stock Option Plan of our
reports dated April 22, 1996, with respect to the consolidated financial
statements of Rational Software Corporation incorporated by reference in its
Annual Report (Form 10-K) for the year ended March 31, 1996 and the related
financial statement schedule included therein, filed with the Securities and
Exchange Commission.


                                                /s/ Ernst & Young LLP


San Jose, California
February 5, 1997


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