INTEGRATED PACKAGING ASSEMBLY CORP
S-8, 1999-10-01
SEMICONDUCTORS & RELATED DEVICES
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<PAGE>

       As filed with the Securities and Exchange Commission on October 1, 1999
                                               Registration No. 333-__________

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

                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549
                          __________________________

                                   FORM S-8
                            REGISTRATION STATEMENT
                                     Under
                          THE SECURITIES ACT OF 1933
                          __________________________

                   INTEGRATED PACKAGING ASSEMBLY CORPORTION
            (Exact name of Registrant as specified in its charter)

          Delaware                                     77-0309372
- ------------------------------         -----------------------------------------
  (State of Incorporation)              (I.R.S. Employer Identification Number)

                             2221 Old Oakland Road
                              San Jose, CA  95131
                   (Address of Principal Executive Offices)
                          __________________________

                            1993 STOCK OPTION  PLAN
                         EMPLOYEE STOCK PURCHASE PLAN
                           1999 DIRECTOR OPTION PLAN
                           (Full title of the plans)
                          __________________________

                               Patrick Verderico
                     President and Chief Executive Officer
                   INTEGRATED PACKAGING ASSEMBLY CORPORATION
                             2221 Old Oakland Road
                              San Jose, CA  95131
                                (408) 321-3600
(Name, address and telephone number, including area code, of agent for service)

                          __________________________

                                   Copy to:
                             J. Robert Suffoletta
                    WILSON SONSINI GOODRICH & ROSATI, P.C.
                              650 Page Mill Road
                         Palo Alto, California  94304
                           Telephone: (650) 493-9300

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

                        CALCULATION OF REGISTRATION FEE

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------------------------------------
                                                         Proposed
                                           Amount        Maximum         Proposed Maximum
      Title of Securities to               to be      Offering Price    Aggregate Offering      Amount of
          be Registered                  Registered    Per Share (1)           Price         Registration Fee
- --------------------------------------------------------------------------------------------------------------
<S>                                       <C>         <C>               <C>                  <C>
Common Stock to be issued under the       17,485,079      $  0.185          $3,234,739.62       $899.26
 1993 Stock Option Plan

Common Stock to be issued under the        1,600,000       0.15725                251,600         69.94
 Employee Stock Purchase Plan

Common Stock to be issued under the        4,000,000         0.185                740,000        205.72
 1999 Director Option Plan

                           TOTAL:         23,085,079                         4,226,339.62      1,174.92
</TABLE>

________________________
(1)  The Proposed Maximum Offering Price Per Share was estimated pursuant to
     Rule 457 under the Securities Act of 1933, as amended (the "Act").  The per
     share price was determined be reference to the average of the high and low
     prices per share of the Common Stock as reported on the Nasdaq National
     Market on September 27, 1999 (the "FMV"), except that the per share price
     for the Employee Stock Purchase Plan is determined to be equal to 85%  of
     the FMV.
================================================================================
<PAGE>

                      REGISTRATION STATEMENT ON FORM S-8

                                    PART II

                INFORMATION REQUIRED IN REGISTRATION STATEMENT

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

     The following documents and information previously filed with the
Securities and Exchange Commission (the "Commission") by Integrated Packaging
Assembly Corporation (the "Company") are hereby incorporated by reference in
this Registration Statement:

     1.  The Company's Annual Report on Form 10-K for the year ending December
31, 1998, filed pursuant to Section 13(a) or 15(d) of the Securities Exchange
Act of 1934, as amended (the "Exchange Act").

     2.  The Company's Quarterly Reports on Form 10-Q for the quarters ending
April 4, 1999 and July 4, 1999, filed pursuant to Section 13(a) or 15(d) of the
Exchange Act.

     3.  The Company's Current Report on Form 8-K filed on May 7, 1999 filed
pursuant to Section 13(a) or 15(d) of the Exchange Act.

     4.  The description of the Company's Common Stock contained in the
Company's Registration Statement on Form 8-B filed with the Commission pursuant
to Section 12 of the Exchange Act, including any amendment or report filed for
the purpose of updating such description.

     All documents filed by the Company pursuant to Sections 13(a), 13(c), 14
and 15(d) of the Exchange Act on or after the date 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 this
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 Company's Certificate of Incorporation limits the liability of
directors to the maximum extent permitted by Delaware law. Delaware law provides
that directors of a company will not be personally liable for monetary damages
for breach of their fiduciary duties as directors, except for liability (i) for
any breach of their duty of loyalty to the company or its stockholders, (ii) for
acts or omissions not in good faith or which involve intentional misconduct or
knowing violation of law, (iii) for unlawful payments or dividends or unlawful
stock repurchases or redemptions as provided Section 174 of Delaware General
Corporation Law or (iv) for transactions from which the director derived an
improper personal benefit.

     The Company's Bylaws provide that the Company shall indemnify its officers
and directors and may indemnify its employees and other agents to the fullest
extent provided by Delaware law, including those circumstances where
indemnification would otherwise be discretionary under Delaware law.  The
Company

                                      II-1
<PAGE>

believes that indemnification under its Bylaws covers at least negligence on the
part of indemnified parties. The Bylaws authorize the use of indemnification
agreements and the Company has entered into such agreements with each of its
directors and officers.

     The Company carries officer and director liability insurance with respect
to certain matters, including matters arising under the Securities Act.

     Delaware Law does not permit a corporation to eliminate a director's duty
of care, and the provisions of the Company's Certificate of Incorporation have
no effect on the availability of equitable remedies such as injunction or
rescission, based upon a director's breach of the duty of care. Insofar as
indemnification for liabilities arising under the Exchange Act may be permitted
to foregoing provisions and agreements, the Company has been informed that in
the opinion of the staff of the Commission such indemnification is against
public policy as expressed in the Exchange Act and is therefore unenforceable.

Item 7.  Exemption from Registration Claimed.
         ------------------------------------

Not Applicable.

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

  Exhibit
   Number                   Description
- ------------  ------------------------------------------------------------------
    4.1       1993 Stock Option Plan, as amended
    4.2       Employee Stock Purchase Plan, as amended
    4.3       1999 Director Option Plan
    5.1       Opinion of counsel as to legality of securities being registered
   23.1       Consent of independent accountants
   23.2       Consent of counsel (contained in Exhibit 5.1)
   24.1       Power of Attorney (see page II-4)

Item 9.  Undertakings.
         ------------

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.

     (4)  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 the initial bona
fide offering thereof.

                                      II-2
<PAGE>

     (5)  Insofar as indemnification for liabilities arising under the
Securities Act may be permitted to directors, officers and controlling persons
of the registrant pursuant to the foregoing provisions, or otherwise, the
registrant has been advised that in the opinion of the Securities and Exchange
Commission, such indemnification is against public policy as expressed in the
Exchange 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 Exchange 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, as amended, the
Registrant certifies that it has reasonable grounds to believe that it meets all
of the requirements for filing on Form S-8 and has duly caused this Registration
Statement to be signed on its behalf by the undersigned, thereunto duly
authorized, in the City of San Jose, State of California, on this 30th day of
September, 1999.

                                   INTEGRATED PACKAGING ASSEMBLY CORPORTION

                                   By: /s/ PATRICK VERDERICO
                                       -------------------------------------
                                       Patrick Verderico,
                                       President and Chief Executive Officer

                               POWER OF ATTORNEY

     KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature
appears below hereby constitutes and appoints Patrick Verderico and F. Terrence
Markle, and each of them acting individually, as 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 any substitute, 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 on
September 30, 1999 in the capacities indicated:

<TABLE>
<CAPTION>
                Signature                                             Title
- ----------------------------------------------------------------------------------------------------------
<S>                                              <C>
/s/ PATRICK VERDERICO                            Director, Chief Executive Officer and President
- ---------------------------
Patrick Verderico                                (Principal Executive and Financial Officer)

/s/ F. TERRENCE MARKLE                           Corporate Controller (Principal Accounting Officer)
- ---------------------------
F. Terrence Markle

/s/ DONALD W. BROOKS                             Director
- ----------------------------
Donald W. Brooks

/s/ EDWARD S. DUH                                Director
- ----------------------------
Edward S. Duh

/s/ CALVIN LEE                                   Director
- ----------------------------
Calvin Lee

/s/ EDMOND TSENG                                 Director
- ----------------------------
Edmond Tseng
</TABLE>

                                      II-4
<PAGE>

                               INDEX TO EXHIBITS

  Exhibit
   Number                       Description
- ------------  ------------------------------------------------------------------
     4.1      1993 Stock Option Plan, as amended
     4.2      Employee Stock Purchase Plan, as amended
     4.3      1999 Director Option Plan
     5.1      Opinion of counsel as to legality of securities being registered
    23.1      Consent of independent accountants
    23.2      Consent of counsel (contained in Exhibit 5.1)
    24.1      Power of Attorney (see page II-4)

<PAGE>

                                                                     EXHIBIT 4.1

                   INTEGRATED PACKAGING ASSEMBLY CORPORATION

                            1993 STOCK OPTION PLAN

                       (as amended through May 26, 1999)


     1.   Purposes of the Plan.  The purposes of this Stock Option Plan are to
          --------------------
attract and retain the best available personnel for positions of substantial
responsibility, to provide additional incentive to Employees and Consultants of
the Company and its Subsidiaries and to promote the success of the Company's
business.  Options granted under this Plan may be incentive stock options (as
defined under Section 422 of the Code) or non-statutory stock options, as
determined by the Administrator at the time of grant of an option and subject to
the applicable provisions of Section 422 of the Code, as amended, and the
regulations promulgated thereunder.

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

          (a) "Administrator" means the Board or any of its Committees appointed
               -------------
pursuant to Section 4 of the Plan.

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

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

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

          (e) "Company" means Integrated Packaging Assembly Corporation, a
               -------
California corporation.

          (f) "Consultant" means any person, including an advisor, who is
               ----------
engaged by the Company or any Parent or Subsidiary to render services and is
compensated for such services, and any director of the Company whether
compensated for such services or not provided that if and in the event the
Company registers any class of any equity security pursuant to the Exchange Act,
the term Consultant shall thereafter not include directors who are not
compensated for their services or are paid only a director's fee by the Company.

          (g) "Continuous Status as an Employee" means the absence of any
               --------------------------------
interruption or termination of the employment relationship by the Company or any
Subsidiary.  Continuous Status as an Employee shall not 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; provided,
however, that for purposes of Incentive Stock Options, such leave is for a
period of not more than ninety (90) days, unless reemployment upon the
expiration of such leave is guaranteed by contract or statute, or unless
provided otherwise pursuant to Company policy adopted from time to time; or (ii)
in the case of transfers between locations of the Company or between the
Company, its Subsidiaries or its successor.

                                      -1-
<PAGE>

          (h) "Employee" means any person, including officers and directors,
               --------
employed by the Company or any Parent or Subsidiary of the Company.  The payment
of a director's fee by the Company shall not be sufficient to constitute
"employment" by the Company.

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

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

              (i)   If the Stock is listed on any established stock exchange or
a national market system including without limitation the National Market System
of the National Association of Securities Dealers, Inc. Automated Quotation
("NASDAQ") System, 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
system or exchange or the exchange with the greatest volume of trading in Stock
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;

              (ii)  If the Stock is quoted on the NASDAQ System (but not on the
National Market System thereof) or regularly quoted by a recognized securities
dealer but selling prices are not reported, its Fair Market Value shall be the
mean between the high and low asked prices for the Stock or;

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

          (k) "Incentive Stock Option" means an Option intended to qualify as an
               ----------------------
incentive stock option within the meaning of Section 422 of the Code.

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

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

          (n) "Optioned Stock" means the Stock subject to an Option.
               --------------

          (o) "Optionee" means an Employee or Consultant who receives an Option.
               --------

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

          (q) "Plan" means this 1993 Stock Option Plan.
               ----

          (r) "Share" means a share of the Stock, as adjusted in accordance with
               -----
Section 12 of the Plan.

          (s) "Stock" means the Common Stock of the Company;
               -----

                                      -2-
<PAGE>

          (t)  "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 12 of
          -------------------------
the Plan, the maximum number of shares of Stock which may be optioned and sold
under the Plan is 20,000,000 shares.  The shares may be authorized, but
unissued, or reacquired Stock.

          If an Option should expire or become unexercisable for any reason
without having been exercised in full, the unpurchased Shares which were subject
thereto shall, unless the Plan shall have been terminated, become available for
future grant under the Plan.

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

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

               (i)   Administration With Respect to Directors and Officers.
                     -----------------------------------------------------
With respect to grants of Options to Employees who are also officers or
directors of the Company, the Plan shall be administered by (A) the Board if the
Board may administer the Plan in compliance with Rule 16b-3 promulgated under
the Exchange Act or any successor thereto ("Rule 16b-3") with respect to a plan
intended to qualify thereunder as a discretionary plan, or (B) a Committee
designated by the Board to administer the Plan, which Committee shall be
constituted in such a manner as to permit the Plan to comply with Rule 16b-3
with respect to a plan intended to qualify thereunder as a discretionary plan.
Once appointed, such Committee shall continue to serve in its designated
capacity until otherwise directed by the Board. From time to time the Board may
increase the size of the Committee and appoint additional members thereof,
remove members (with or without cause) and appoint new members in substitution
therefor, fill vacancies, however caused, and remove all members of the
Committee and thereafter directly administer the Plan, all to the extent
permitted by Rule 16b-3 with respect to a plan intended to qualify thereunder as
a discretionary plan.

               (ii)  Multiple Administrative Bodies.  If permitted by Rule
                     ------------------------------
16b-3, the Plan may be administered by different bodies with respect to
directors, non-director officers and Employees who are neither directors nor
officers.

               (iii) Administration With Respect to Consultants and Other
                     ----------------------------------------------------
Employees. With respect to grants of Options 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 in such a manner as to satisfy the legal requirements relating to
the administration of incentive stock option plans, if any, of the corporate and
securities laws of California and of the Code (the "Applicable Laws"). Once
appointed, such Committee shall continue to serve in its designated capacity
until otherwise directed by the Board. From time to time the Board may increase
the size of the Committee and appoint additional members thereof, remove members
(with or without cause) and appoint new members in substitution therefor, fill
vacancies, however caused, and remove all members of the Committee and
thereafter directly administer the Plan, all to the extent permitted by the
Applicable Laws.

                                      -3-
<PAGE>

          (b)  Powers of the Administrator.  Subject to the provisions of the
               ---------------------------
Plan and in the case of a Committee, 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 Stock, in
accordance with Section 2(j) of the Plan;

               (ii)   to select the officers, Consultants and Employees to whom
Options may from time to time be granted hereunder;

               (iii)  to determine whether and to what extent Options are
granted hereunder;

               (iv)   to determine the number of shares of Stock to be covered
by each such award 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 (including, but not
limited to, the share price and any restriction or limitation, or waiver of
forfeiture restrictions regarding any Option or other award and/or the shares of
Stock relating thereto, based in each case on such factors as the Administrator
shall determine, in its sole discretion); provided, however, that so long as a
permit under Section 25113 of the California Corporation Code is in effect with
respect to the Plan, each Option under this Plan must vest at a rate of no less
                                                                        -------
than 20% per year over 5 years;
- ----

               (vii)  to determine whether and under what circumstances an
Option may be bought-out for cash under subsection 9(f);

               (viii) to determine whether, to what extent and under what
circumstances Stock and other amounts payable with respect to an award under
this Plan shall be deferred either automatically or at the election of the
participant (including providing for and determining the amount, if any, of any
deemed earnings on any deferred amount during any deferral period);

               (ix)   to reduce the exercise price of any Option to the then
current Fair Market Value if the Fair Market Value of the Stock covered by such
Option shall have declined since the date the Option was granted; and

               (x)    to provide for the early exercise of an Option for the
purchase of unvested Shares, subject to such terms and conditions as the
Administrator may determine.

          (c)  Effect of Committee's Decision.  All decisions, determinations
               ------------------------------
and interpretations of the Administrator shall be final and binding on all
Optionees and any other holders of any Options.

                                      -4-
<PAGE>

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

          (a)  Nonstatutory Stock Options may be granted to Employees and
Consultants.  Incentive Stock Options may be granted only to Employees.  An
Employee or Consultant who has been granted an Option may, if he is otherwise
eligible, be granted an additional Option or Options.

          (b)  Each Option shall be designated in the written option agreement
as either an Incentive Stock Option or a Nonstatutory Stock Option. However,
notwithstanding such designations, to the extent that the aggregate Fair Market
Value of the Shares with respect to which Options designated as Incentive Stock
Options are exercisable for the first time by any Optionee during any calendar
year (under all plans of the Company or any Parent or Subsidiary) exceeds
$100,000, such excess Options shall be treated as Nonstatutory Stock Options.

          (c)  For purposes of Section 5(b), Incentive Stock Options shall be
taken into account in the order in which they were granted, and the Fair Market
Value of the Shares shall be determined as of the time the Option with respect
to such Shares is granted.

          (d)  The Plan shall not confer upon any Optionee any right with
respect to continuation of employment or consulting relationship with the
Company, nor shall it interfere in any way with his right or the Company's right
to terminate his employment or consulting relationship at any time, with or
without cause.

          (e)  Upon the Company or a successor corporation issuing any class of
common equity securities required to be registered under Section 12 of the
Exchange Act or upon the Plan being assumed by a corporation having a class of
common equity securities required to be registered under Section 12 of the
Exchange Act, 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 250,000 Shares.

               (ii)  In connection with his or her initial employment, an
Employee may be granted Options to purchase up to an additional 250,000 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 11.

               (iv)  If an Option is cancelled in the same fiscal year of the
Company in which it was granted (other than in connection with a transaction
described in Section 11), the cancelled Option will be counted against the limit
set forth in subsection (i) 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.

     6.   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 as described in Section 18

                                      -5-
<PAGE>

of the Plan. It shall continue in effect until April 6, 2003 unless sooner
terminated under Section 14 of the Plan.

     7.   Term of Option.  The term of each Option shall be the term stated in
          --------------
the Option Agreement; provided, however, the term shall be no more than ten (10)
years from the date of grant thereof or such shorter term as may be provided in
the Option Agreement.  However, in the case of an Incentive Stock Option granted
to an Optionee who, at the time the 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 Option shall be five (5)
years from the date of grant thereof or such shorter term as may be provided in
the Option Agreement.

     8.   Option Exercise Price and Consideration.
          ---------------------------------------

          (a)  The per share exercise price for the Shares to be issued pursuant
to exercise of an Option shall be such price as is determined by the Board, but
shall be subject to the following:

               (i)  In the case of an Incentive Stock Option

                    (A)  granted to an Employee who, at the time of the grant of
such Incentive Stock Option, 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, the per Share exercise price
shall be no less than 100% of the Fair Market Value per Share on the date of
grant.

               (ii) In the case of a Nonstatutory Stock Option

                    (A)  granted to a person who, at the time of the grant of
such Option, 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 the grant.

                    (B)  granted to any person, the per Share exercise price
shall be no less than 85% of the Fair Market Value per Share on the date of
grant.

          (b)  The consideration to be paid for the Shares to be issued upon
exercise of an Option, including the method of payment, shall be determined by
the Administrator (and, in the case of an Incentive Stock Option, shall be
determined at the time of grant) and may consist entirely of (1) cash, (2)
check, (3) promissory note, (4) other shares of the Company's capital stock
which (x) in the case of shares of the Company's capital stock acquired upon
exercise of an Option either have been owned by the Optionee for more than six
months on the date of surrender or were not acquired, directly or indirectly,
from the Company, and (y) 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, (5) delivery of a properly executed exercise notice together
with irrevocable instructions to a broker to promptly deliver to the Company the
amount of sale or loan proceeds required to pay the exercise price, (6) any

                                      -6-
<PAGE>

combination of the foregoing methods of payment, (7) or such other consideration
and method of payment for the issuance of Shares to the extent permitted under
Applicable Laws.

     9.   Exercise of Option.
          ------------------

          (a)  Procedure for Exercise; Rights as a Shareholder. Any Option
               -----------------------------------------------
granted hereunder shall be exercisable at such times and under such conditions
as determined by the Board, including performance criteria with respect to the
Company and/or the Optionee, and as shall be permissible under the terms of the
Plan.  An Option may not be exercised for a fraction of a Share.

               An Option shall be deemed to be exercised, and the Optionee
deemed to be a shareholder of the shares being purchased upon exercise, when
written notice of such exercise has been given to the Company in accordance with
the terms of the Option by the person entitled to exercise the Option and full
payment for the Shares with respect to which the Option is exercised has been
received by the Company. Full payment may, as authorized by the Board, consist
of any consideration and method of payment allowable under Section 8(b) of the
Plan.

               Exercise of an Option in any manner shall result in a decrease in
the number of Shares which thereafter may be 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. In the event of termination of an
               -------------------------
Optionee's consulting relationship or Continuous Status as an Employee with the
Company (as the case may be), such Optionee may, within at least thirty (30)
days with such determination in the case of an Incentive Stock Option not
exceeding three (3) months after the date of such termination (but in no event
later than the expiration date of the term of such Option as set forth in the
Option Agreement), exercise his Option to the extent that Optionee was entitled
to exercise it at the date of such termination.  To the extent that Optionee was
not entitled to exercise the Option at the date of such termination, or if
Optionee does not exercise such Option to the extent so entitled within the time
specified herein, the Option shall terminate.

          (c)  Disability of Optionee.  Notwithstanding the provisions of
               ----------------------
Section 9(b) above, in the event of termination of an Optionee's Consulting
relationship or Continuous Status as an Employee as a result of his total and
permanent disability (as defined in Section 22(e)(3) of the Code), Optionee may,
but only within twelve (12) months from the date of such termination (but in no
event later than the expiration date of the term of such Option as set forth in
the Option Agreement), exercise the Option to the extent otherwise entitled to
exercise it at the date of such termination. To the extent that Optionee was not
entitled to exercise the Option at the date of termination, or if Optionee does
not exercise such Option to the extent so entitled within the time specified
herein, the Option shall terminate.

          (d)  Death of Optionee.  In the event of the death of an Optionee, the
               -----------------
Option may be exercised, at any time within twelve (12) months following the
date of death (but in no event later than the expiration date of the term of
such Option as set forth in the Option Agreement), by the Optionee's estate or
by a person who acquired the right to exercise the Option by bequest or
inheritance, but only to the extent the Optionee was entitled to exercise the
Option at the date of death.  To the extent that Optionee was not entitled to
exercise the Option at the date of termination, or if Optionee does not exercise
such Option to the extent so entitled within the time specified herein, the
Option shall terminate.

                                      -7-
<PAGE>

          (e)  Rule 16b-3.  Options granted to persons subject to Section 16(b)
               ----------
of the Exchange Act must comply with Rule 16b-3 and shall contain such
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.

          (f)  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.

     10.  Non-Transferability of Options.  The Option may not be sold, pledged,
          ------------------------------
assigned, hypothecated, transferred, or disposed of in any 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.

     11.  Adjustments Upon Changes in Capitalization, Liquidation, 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 the number of shares of Common Stock which have been
authorized for issuance under the Plan but as to which no Options have yet been
granted or which have been returned to the Plan upon cancellation or expiration
of an Option, as well as the price per share of Common Stock covered by each
such outstanding Option, 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.

          (b)  Dissolution or Liquidation.  In the event of the proposed
               --------------------------
dissolution or liquidation of the Company, to the extent that an Option has not
been previously exercised, it will terminate immediately prior to the
consummation of such proposed action.  The Board may, in the exercise of its
sole discretion in such instances, declare that any Option shall terminate as of
a date fixed by the Board and give each Optionee the right to exercise his or
her Option as to all or any part of the Optioned Stock, including Shares as to
which the Option would not otherwise be exercisable.

          (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 shall be assumed or an equivalent option
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, the Optionee shall have the right to
exercise the Option as to all of the Optioned Stock, including Shares as to
which it would not otherwise be exercisable.  If an Option is exercisable in
lieu of assumption or substitution in the event of a merger or sale of assets,
the Board shall

                                      -8-
<PAGE>

notify the Optionee that the Option shall be fully exercisable for a period of
fifteen (15) days from the date of such notice, and the Option shall terminate
upon the expiration of such period. For the purposes of this paragraph, the
Option shall be considered assumed if, following the merger or sale of assets,
the option confers the right to purchase or receive, for each Share of Optioned
Stock subject to the Option 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 was not solely common
stock of the successor corporation or its Parent, the Board may, with the
consent of the successor corporation, provide for the consideration to be
received upon the exercise of the Option, for each Share of Optioned Stock
subject to the Option, 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.

     12.  Time of Granting Options.  The date of grant of an Option shall, for
          ------------------------
all purposes, be the date on which the Administrator makes the determination
granting such Option, or such other date as is determined by the Board.  Notice
of the determination shall be given to each Employee or Consultant to whom an
Option is so granted within a reasonable time after the date of such grant.

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

          (a)  Amendment and Termination.  The Board may at any time amend,
               -------------------------
alter, suspend or discontinue the Plan, but no amendment, alteration, suspension
or discontinuation shall be made which would impair the rights of any Optionee
under any grant theretofore made, without his or her consent.  In addition, to
the extent necessary and desirable to comply with Rule 16b-3 under the Exchange
Act or with Section 422 of the Code (or any other applicable law or regulation,
including the requirements of the NASD or an established stock exchange), the
Company shall obtain shareholder approval of any Plan amendment in such a manner
and to such a degree as required.

          (b)  Effect of Amendment or Termination.  Any such amendment or
               ----------------------------------
termination of the Plan shall not affect Options already granted and such
Options shall remain in full force and effect as if this Plan had not been
amended or terminated, unless mutually agreed otherwise between the Optionee and
the Board, which agreement must be in writing and signed by the Optionee and the
Company.

     14.  Conditions Upon Issuance of Shares.  Shares shall not be issued
          ----------------------------------
pursuant to the exercise of an Option unless the exercise of such Option and the
issuance and delivery of such Shares pursuant thereto 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, 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 being purchased only for investment and
without any present intention to sell or distribute such Shares if, in

                                      -9-
<PAGE>

the opinion of counsel for the Company, such a representation is required by any
of the aforementioned relevant provisions of law.

     15.  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.

          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.

     16.  Agreements.  Options shall be evidenced by written agreements in such
          ----------
form as the Board shall approve from time to time.

     17.  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 degree and manner required under applicable state and federal law.

                                      -10-

<PAGE>

                                                                     EXHIBIT 4.2

                   INTEGRATED PACKAGING ASSEMBLY CORPORATION

                       1996 EMPLOYEE STOCK PURCHASE PLAN

                       (as amended through May 26, 1999)

     The following constitute the provisions of the 1996 Employee Stock Purchase
Plan of Integrated Packaging Assembly 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 Integrated Packaging Assembly Corporation,
                -------
a California corporation, and any Designated Subsidiary of the Company.

          (e)  "Compensation" shall mean all W-2 compensation.
                ------------

          (f)  "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.

          (g)  "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 90 days and
the individual's right to reemployment is not guaranteed either by statute or by
contract, the employment relationship will be deemed to have terminated on the
91st day of such leave.

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

          (i)  "Exercise Date" shall mean the last day of each Purchase Period.
                -------------
<PAGE>

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

               (1)  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 Board deems reliable, or;

               (2)  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;

               (3)  For purposes of the Enrollment Date under the first Offering
Period under the Plan, the Fair Market Value shall be the initial price to the
public as set forth in the final prospectus included within the Registration
Statement filed with the Securities and Exchange Commission for the initial
public offering of the Company's Common Stock.

               (4)  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.

          (k)  "Offering Period" shall mean the period of approximately twelve
                ---------------
(12) months during which an option granted pursuant to the Plan may be
exercised, commencing on the first Trading Day on or after February 1 and August
1 of each year and terminating on the last Trading Day in the periods ending
twelve months later. The first Offering Period shall begin on the effective date
of the registration statement related to the initial public offering of the
Company's Common Stock that is filed with the Securities and Exchange Commission
and shall end on the last Trading Day on or before July 31, 1996. The duration
and timing of Offering Periods may be changed pursuant to Section 4 of this
Plan.

          (l)  "Plan" shall mean this 1996 Employee Stock Purchase Plan.
                ----

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

          (n)  "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.

          (o)  "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.

                                      -2-
<PAGE>

          (p)  "Subsidiary" shall mean a corporation, domestic or foreign, of
                ----------
which not less than 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.

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

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

          (a)  Any Employee, as defined in Section 2(g), who has been employed
by the Company for at least thirty (30) days prior to 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) if, 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) which
permits his or her rights to purchase stock under all employee stock purchase
plans of the Company and its subsidiaries to accrue 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.

     4.   Offering Periods.  The Plan shall be implemented by consecutive,
          ----------------
overlapping Offering Periods with a new Offering Period commencing on the first
Trading Day on or after February 1 and August 1 each year, or on such other
dates as the Board shall determine, and continuing thereafter until terminated
in accordance with Section 19 hereof. The first Offering Period shall begin on
the effective date of the registration statement related to the initial public
offering of the Company's Common Stock that is filed with the Securities and
Exchange Commission and shall end on the last Trading Day on or before July 31,
1996. The first Offering Period shall consist of one Purchase Period commencing
and ending on the first and last day of the first Offering Period, as aforesaid.
Subsequent Offering Periods shall consist of two Purchase Periods, unless
otherwise determined by the Board in its discretion. 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 five (5) 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.

                                      -3-
<PAGE>

          (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, and the aggregate of such payroll deductions during the Offering Period
shall not exceed ten percent (10%) of the participant's Compensation during said
Offering Period.

          (b)  All payroll deductions made for a participant shall be credited
to his or her account under the Plan and will 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 following five (5) business days
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 0% at such time during any Purchase
Period which is scheduled to end during the current calendar year (the "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 Current Purchase Period equal $21,250. 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 will 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.

                                      -4-
<PAGE>

     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 any Purchase Period (other than the
first Purchase Period) more than a number of Shares determined by dividing
$12,500 ($25,000 in the case of the first Purchase Period) 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. 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 will
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 will 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 certificate representing the shares
purchased upon exercise of his or her option.

     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 will be paid to such participant promptly after
receipt of notice of withdrawal and such participant's option for the Offering
Period will be automatically terminated, and no further payroll deductions for
the purchase of shares will be made for such Offering Period. If a participant
withdraws from an Offering Period, payroll deductions will 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 (as defined in
Section 2(g) hereof), for any reason, he or she will 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

                                      -5-
<PAGE>

to exercise the option will 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 will 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.

     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 two million (2,000,000)
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.

          (b)  The participant will 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 will 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 only administered 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.

                                      -6-
<PAGE>

     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.

     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 will be maintained for each
          -------
participant in the Plan. Statements of account will be given to participating
Employees at least annually, which statements will 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 as well as the price per share 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

                                      -7-
<PAGE>

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 will 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, each option under the Plan shall be assumed or
an equivalent option shall be substituted by such successor corporation or a
parent or subsidiary of such successor corporation, unless the Board determines,
in the exercise of its sole discretion and in lieu of such assumption or
substitution, to shorten the Offering Periods then in progress by setting a new
Exercise Date (the "New Exercise Date"). If the Board shortens the Offering
Periods then in progress in lieu of assumption or substitution in the event of a
merger or sale of assets, 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 his option has been changed to the New Exercise Date and that his
option will be exercised automatically on the New Exercise Date, unless prior to
such date he has withdrawn from the Offering Period as provided in Section 10
hereof. For purposes of this paragraph, an option granted under the Plan shall
be deemed to be assumed if, following the sale of assets or merger, the option
confers the right to purchase, for each share of option stock subject to the
option immediately prior to the sale of assets or merger, the consideration
(whether stock, cash or other securities or property) received in the sale of
assets or merger by holders of Common Stock for each share of Common Stock held
on the effective date of the transaction (and if such holders were offered a
choice of consideration, the type of consideration chosen by the holders of a
majority of the outstanding shares of Common Stock); provided, however, that if
such consideration received in the sale of assets or merger was not solely
common stock of the successor corporation or its parent (as defined in Section
424(e) of the Code), the Board may, with the consent of the successor
corporation, provide for the consideration to be received upon exercise of the
option 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 and the sale of assets or merger.

     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

                                      -8-
<PAGE>

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 Exchange Act, 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 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

                                      -9-
<PAGE>

such Exercise Date and automatically re-enrolled in the immediately following
Offering Period as of the first day thereof.

                                      -10-
<PAGE>

                                   EXHIBIT A
                                   ---------

                   INTEGRATED PACKAGING ASSEMBLY 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 Integrated
     Packaging Assembly Corporation 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 (1-10%) 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 "Integrated Packaging Assembly
     Corporation 1996 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. I understand that my ability to exercise
     the option under this Subscription Agreement is subject to obtaining
     shareholder approval of the Employee Stock Purchase 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 2 years after the Enrollment Date (the first day of the
     Offering Period during which I purchased such shares) or one 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 purchased over the price which I paid for the shares. I hereby
                                                                       --------
     agree to notify the Company in writing within 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
     -------------------------------
<PAGE>

     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 2-year and 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 (1) 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 (2) 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.

                                      -12-
<PAGE>

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)

                                      -13-
<PAGE>

                                   EXHIBIT B
                                   ---------

                   INTEGRATED PACKAGING ASSEMBLY CORPORATION

                       1996 EMPLOYEE STOCK PURCHASE PLAN

                             NOTICE OF WITHDRAWAL


     The undersigned participant in the Offering Period of the Integrated
Packaging Assembly Corporation 1996 Employee Stock Purchase Plan which began on
____________, 19____ (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 understands 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: ______________________________________

<PAGE>

                                                                     EXHIBIT 4.3

                   INTEGRATED PACKAGING ASSEMBLY CORPORATION

                           1999 DIRECTOR OPTION PLAN

     1.   Purposes of the Plan.  The purposes of this 1999 Director Option Plan
          --------------------
are to attract and retain the best available personnel for service as Outside
Directors (as defined herein) of the Company, to provide additional incentive to
the Outside Directors of the Company to serve as Directors, and to encourage
their continued service on the Board.

          All options granted hereunder shall be nonstatutory stock options.

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

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

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

          (c)  "Common Stock" means the common stock of the Company.
                ------------

          (d)  "Company" means Integrated Packaging Assembly Corporation, a
                -------
Delaware corporation.

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

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

          (g)  "Employee" means any person, including officers and Directors,
                --------
employed by the Company or any Parent or Subsidiary of the Company. The payment
of a Director's fee by the Company shall not be sufficient in and of itself to
constitute "employment" by the Company.

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

          (i)  "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;
<PAGE>

               (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 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 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.

          (j)  "Inside Director" means a Director who is an Employee.
                ---------------

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

          (l)  "Optioned Stock" means the Common Stock subject to an Option.
                --------------

          (m)  "Optionee" means a Director who holds an Option.
                --------

          (n)  "Outside Director" means a Director who is not an Employee.
                ----------------

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

          (p)  "Plan" means this 1999 Director Option Plan.
                ----

          (q)  "Share" means a share of the Common Stock, as adjusted in
                -----
accordance with Section 10 of the Plan.

          (r)  "Subsidiary" means a "subsidiary corporation," whether now or
                ----------
hereafter existing, as defined in Section 424(f) of the Internal Revenue Code of
1986.

     3.   Stock Subject to the Plan.  Subject to the provisions of Section 10
          -------------------------
of the Plan, the maximum aggregate number of Shares which may be optioned and
sold under the Plan is Four Million [4,000,000] Shares (the "Pool"). The Shares
may be authorized, but unissued, or reacquired Common Stock.

          If an Option expires or becomes unexercisable without having been
exercised in full, the unpurchased Shares which were subject thereto shall
become available for future grant or sale under the Plan (unless the Plan has
terminated).  Shares that have actually been issued under the Plan shall not be
returned to the Plan and shall not become available for future distribution
under the Plan.

                                      -2-
<PAGE>

     4.   Administration and Grants of Options under the Plan.
          ---------------------------------------------------

          (a)  Procedure for Grants.  All grants of Options to Outside
               --------------------
Directors under this Plan shall be automatic and nondiscretionary and shall be
made strictly in accordance with the following provisions:

               (i)   No person shall have any discretion to select which Outside
Directors shall be granted Options or to determine the number of Shares to be
covered by Options.

               (ii)  Each Outside Director shall be automatically granted an
Option to purchase One Hundred Thousand (100,000) Shares (the "First Option") on
the date on which the later of the following events occurs: (A) the effective
date of this Plan, as determined in accordance with Section 6 hereof, or (B) the
date on which such person first becomes an Outside Director, whether through
election by the shareholders of the Company or appointment by the Board to fill
a vacancy; provided, however, that an Inside Director who ceases to be an Inside
Director but who remains a Director shall not receive a First Option.

               (iii) Each Outside Director shall be automatically granted an
Option to purchase One Hundred Thousand (100,000) Shares (a "Subsequent Option")
on the date each director is reelected to the Board at the Company's Annual
Meeting of Stockholders provided he or she is then an Outside Director and if as
of such date, he or she shall have served on the Board for at least the
preceding six (6) months.

               (iv)  Notwithstanding the provisions of subsections (ii) and
(iii) hereof, any exercise of an Option granted before the Company has obtained
shareholder approval of the Plan in accordance with Section 16 hereof shall be
conditioned upon obtaining such shareholder approval of the Plan in accordance
with Section 16 hereof.

               (v)   The terms of a First Option granted hereunder shall be as
follows:

                     (A)  the term of the First Option shall be ten (10) years.

                     (B)  the First Option shall be exercisable only while the
Outside Director remains a Director of the Company, except as set forth in
Sections 8 and 10 hereof.

                     (C)  the exercise price per Share shall be equal to the
Fair Market Value per Share on the date of grant of the First Option.

                     (D)  the First Option shall be fully vested and exercisable
on its date of grant.

                                      -3-
<PAGE>

                    (vi)  The terms of a Subsequent Option granted hereunder
shall be as follows:

                          (A)  the term of the Subsequent Option shall be ten
(10) years.

                          (B)  the Subsequent Option shall be exercisable only
while the Outside Director remains a Director of the Company, except as set
forth in Sections 8 and 10 hereof.

                          (C)  the exercise price per Share shall be equal to
the Fair Market Value per Share on the date of grant of the Subsequent Option.

                          (D)  the Subsequent Option shall be fully vested and
exercisable on its date of grant.

                    (vii) In the event that any Option granted under the Plan
would cause the number of Shares subject to outstanding Options plus the number
of Shares previously purchased under Options to exceed the Pool, then the
remaining Shares available for Option grant shall be granted under Options to
the Outside Directors on a pro rata basis. No further grants shall be made until
such time, if any, as additional Shares become available for grant under the
Plan through action of the Board or the shareholders to increase the number of
Shares which may be issued under the Plan or through cancellation or expiration
of Options previously granted hereunder.

     5.   Eligibility.  Options may be granted only to Outside Directors.  All
          -----------
Options shall be automatically granted in accordance with the terms set forth in
Section 4 hereof.

          The Plan shall not confer upon any Optionee any right with respect to
continuation of service as a Director or nomination to serve as a Director, nor
shall it interfere in any way with any rights which the Director or the Company
may have to terminate the Director's relationship with the Company at any time.

     6.   Term of 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 16 of the Plan. It shall continue in effect for
a term of ten (10) years unless sooner terminated under Section 11 of the Plan.

     7.   Form of Consideration.  The consideration to be paid for the Shares
          ---------------------
to be issued upon exercise of an Option, including the method of payment, shall
consist of (i) cash, (ii) check, (iii) consideration received by the Company
under a cashless exercise program implemented by the Company in connection with
the Plan, or (iv) any combination of the foregoing methods of payment.

     8.   Exercise of Option.
          ------------------

          (a)  Procedure for Exercise; Rights as a Shareholder. Any Option
               -----------------------------------------------
granted hereunder shall be exercisable at such times as are set forth in Section
4 hereof; provided, however,

                                      -4-
<PAGE>

that no Options shall be exercisable until shareholder approval of the Plan in
accordance with Section 16 hereof has been obtained.

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

               An Option shall be deemed to be exercised when written notice of
such exercise has been given to the Company in accordance with the terms of the
Option by the person entitled to exercise the Option and full payment for the
Shares with respect to which the Option is exercised has been received by the
Company. Full payment may consist of any consideration and method of payment
allowable under Section 7 of the Plan. 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
shall 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 10 of
the Plan.

               Exercise of an Option in any manner shall result in a decrease in
the number of Shares which thereafter may be 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 Continuous Status as a Director.  Subject to
               ----------------------------------------------
Section 10 hereof, in the event an Optionee's status as a Director terminates
(other than upon the Optionee's death or Disability), the Optionee may exercise
his or her Option, but only within three (3) months following the date of such
termination, and only to the extent that the Optionee was entitled to exercise
it on the date of such termination (but in no event later than the expiration of
its ten (10) year term). To the extent that the Optionee was not entitled to
exercise an Option on the date of such termination, and to the extent that the
Optionee does not exercise such Option (to the extent otherwise so entitled)
within the time specified herein, the Option shall terminate.

          (c)  Disability of Optionee.  In the event Optionee's status as a
               ----------------------
Director terminates as a result of Disability, the Optionee may exercise his or
her Option, but only within twelve (12) months following the date of such
termination, and only to the extent that the Optionee was entitled to exercise
it on the date of such termination (but in no event later than the expiration of
its ten (10) year term). To the extent that the Optionee was not entitled to
exercise an Option on the date of termination, or if he or she does not exercise
such Option (to the extent otherwise so entitled) within the time specified
herein, the Option shall terminate.

          (d)  Death of Optionee.  In the event of an Optionee's death, the
               -----------------
Optionee's estate or a person who acquired the right to exercise the Option by
bequest or inheritance may exercise the Option, but only within twelve (12)
months following the date of death, and only to the extent that the Optionee was
entitled to exercise it on the date of death (but in no event later than the
expiration

                                      -5-
<PAGE>

of its ten (10) year term). To the extent that the Optionee was not entitled to
exercise an Option on the date of death, and to the extent that the Optionee's
estate or a person who acquired the right to exercise such Option does not
exercise such Option (to the extent otherwise so entitled) within the time
specified herein, the Option shall terminate.

     9.   Non-Transferability of Options.  The Option may not be sold, pledged,
          ------------------------------
assigned, hypothecated, transferred, or disposed of in any 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.

     10.  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 covered by each outstanding
Option, the number of Shares which have been authorized for issuance under the
Plan but as to which no Options have yet been granted or which have been
returned to the Plan upon cancellation or expiration of an Option, as well as
the price per Share covered by each such outstanding Option, and the number of
Shares issuable pursuant to the automatic grant provisions of Section 4 hereof
shall be proportionately adjusted for any increase or decrease in the number of
issued Shares 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 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." 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
subject to an Option.

          (b)  Dissolution or Liquidation.  In the event of the proposed
               --------------------------
dissolution or liquidation of the Company, to the extent that an Option has not
been previously exercised, it shall 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, outstanding Options may be assumed or equivalent options may be
substituted by the successor corporation or a Parent or Subsidiary thereof (the
"Successor Corporation"). If an Option is assumed or substituted for, the Option
or equivalent option shall continue to be exercisable as provided in Section 4
hereof for so long as the Optionee serves as a Director or a director of the
Successor Corporation. Following such assumption or substitution, if the
Optionee's status as a Director or director of the Successor Corporation, as
applicable, is terminated other than upon a voluntary resignation by the
Optionee, the Option or option shall become fully exercisable, including as to
Shares for which it would not otherwise be exercisable. Thereafter, the Option
or option shall remain exercisable in accordance with Sections 8(b) through (d)
above.

                                      -6-
<PAGE>

     If the Successor Corporation does not assume an outstanding Option or
substitute for it an equivalent option, the Option shall become fully vested and
exercisable, including as to Shares for which it would not otherwise be
exercisable.  In such event the Board shall notify the Optionee that the Option
shall be fully exercisable for a period of thirty (30) days from the date of
such notice, and upon the expiration of such period the Option shall terminate.

     For the purposes of this Section 10(c), an Option shall be considered
assumed if, following the merger or sale of assets, the Option confers the right
to purchase or receive, for each Share of Optioned Stock subject to the Option
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).
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, for each Share of Optioned Stock
subject to the Option, 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.

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

          (a)  Amendment and Termination.  The Board may at any time amend,
               -------------------------
alter, suspend, or discontinue the Plan, but no amendment, alteration,
suspension, or discontinuation shall be made which would impair the rights of
any Optionee under any grant theretofore made, without his or her consent. In
addition, to the extent necessary and desirable to comply with any applicable
law, regulation or stock exchange rule, the Company shall obtain shareholder
approval of any Plan amendment in such a manner and to such a degree as
required.

          (b)  Effect of Amendment or Termination.  Any such amendment or
               ----------------------------------
termination of the Plan shall not affect Options already granted and such
Options shall remain in full force and effect as if this Plan had not been
amended or terminated.

     12.  Time of Granting Options.  The date of grant of an Option shall, for
          ------------------------
all purposes, be the date determined in accordance with Section 4 hereof.

     13.  Conditions Upon Issuance of Shares.  Shares shall not be issued
          ----------------------------------
pursuant to the exercise of an Option unless the exercise of such Option and the
issuance and delivery of such Shares pursuant thereto 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, state securities laws, 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.

                                      -7-
<PAGE>

          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 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 relevant provisions of law.

          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.

     14.  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.

     15.  Option Agreement.  Options shall be evidenced by written option
          ----------------
agreements in such form as the Board shall approve.

     16.  Shareholder Approval.  The Plan shall be subject to approval by the
          --------------------
shareholders of the Company within twelve (12) months after the date the Plan is
adopted.  Such shareholder approval shall be obtained in the degree and manner
required under applicable state and federal law and any stock exchange rules.

                                      -8-

<PAGE>

                                                                     EXHIBIT 5.1

                               October 1, 1999


Integrated Packaging Assembly Corporation
2221 Old Oakland Road
San Jose, California  95131

     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 October 1, 1999, in
connection with the registration under the Securities Act of 1933, as amended,
of 17,485,079 shares of Common Stock  (the "Option Shares") to be issued under
the Company's 1993 Stock Option Plan (the "Option Plan"), 1,600,000 shares of
Common Stock (the "ESPP Shares") to be issued under the Company's Employee Stock
Purchase Plan (the "ESPP") and 4,000,000 shares of Common Stock (the "Director
Shares") to be issued under the Company's 1999 Director Option Plan (the
"Director Plan").

The Option Shares, the ESPP Shares and Director Shares are collectively referred
to as the "Shares."  The Option Plan, ESPP and Director Plan are collectively
referred to as 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. It is our opinion that the Shares, when issued
and sold in the manner referred to in the Plans, and pursuant to the agreements
which accompany the Plans, as applicable, will be legally and validly issued,
fully paid and nonassessable.

     We consent to the use of this opinion as an exhibit to said Registration
Statement and further consent to the use of our name wherever appearing in said
Registration Statement and any amendments thereto.

                                          Sincerely,

                                          WILSON SONSINI GOODRICH & ROSATI
                                          Professional Corporation

                                          /s/ WILSON SONSINI GOODRICH & ROSATI

<PAGE>

                                                                    EXHIBIT 23.1

                      CONSENT OF INDEPENDENT ACCOUNTANTS

     We hereby consent to the incorporation by reference in this Registration
Statement on Form S-8 of our report dated February 8, 1999 relating to the
financial statements, which appears in Integrated Packaging Assembly
Corporation's Annual Report on Form 10-K for the year ended December 31, 1998.


/s/ PricewaterhouseCoopers LLP
San Jose, California
October 1, 1999


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