RUBIOS RESTAURANTS INC
S-8, 1999-05-21
EATING PLACES
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<PAGE>

          As filed with the Securities and Exchange Commission on May 21, 1999
                                        Registration No. 333-_________________
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

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

                                    FORM S-8
                             REGISTRATION STATEMENT

                                      UNDER
                           THE SECURITIES ACT OF 1933

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

                            RUBIO'S RESTAURANTS, INC.
             (Exact name of registrant as specified in its charter)

                   DELAWARE                             33-0100303
           (State or other jurisdiction        (IRS Employer Identification No.)
          of incorporation or organization)

            1902 WRIGHT PLACE, SUITE 300, CARLSBAD, CALIFORNIA 92008
               (Address of principal executive offices) (Zip Code)

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

                            RUBIO'S RESTAURANTS, INC.
                            1999 STOCK INCENTIVE PLAN
                        1999 EMPLOYEE STOCK PURCHASE PLAN
                            (Full title of the Plans)

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

                                 MR. RALPH RUBIO
                      PRESIDENT AND CHIEF EXECUTIVE OFFICER
                            RUBIO'S RESTAURANTS, INC.
                          1902 WRIGHT PLACE, SUITE 300
                           CARLSBAD, CALIFORNIA 92008
                     (Name and address of agent for service)
                                 (760) 929-8226
          (Telephone number, including area code, of agent for service)

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

                         CALCULATION OF REGISTRATION FEE
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
                                                AMOUNT               PROPOSED              PROPOSED                AMOUNT OF
           TITLE OF SECURITIES                  TO BE            MAXIMUM OFFERING     MAXIMUM AGGREGATE          REGISTRATION
            TO BE REGISTERED                REGISTERED(1)        PRICE PER SHARE       OFFERING PRICE                 FEE
           ------------------               -------------        ---------------      -----------------          ------------
<S>                                        <C>                   <C>                  <C>                        <C>
  1999 STOCK INCENTIVE PLAN
  Common Stock                             1,123,938 shares         $ 10.50(2)          $11,801,349(2)            $ 3,281

  1999 EMPLOYEE STOCK PURCHASE PLAN         200,000 shares          $ 10.50(2)          $ 2,100,000(2)            $   584
  Common Stock
                                                                                     AGGREGATE AMOUNT OF          $ 3,865
                                                                                       REGISTRATION FEE
</TABLE>
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
(1)      This Registration Statement shall also cover any additional shares of
         Registrant's common stock which become issuable under the 1999 Stock
         Incentive Plan and the 1999 Employee Stock Purchase Plan with respect
         to the securities registered hereunder by reason of any stock dividend,
         stock split, recapitalization or other similar transaction effected
         without the Registrant's receipt of consideration which results in an
         increase in the number of the Registrant's outstanding shares of common
         stock.

(2)      Calculated solely for purposes of this offering under Rule 457(h) of
         the Securities Act of 1933, as amended, on the basis of the fair market
         value per share of Registrant's common stock on May 20, 1999, as
         determined by the Registrant's Board of Directors.

<PAGE>

                                     PART II

               INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

ITEM 3.  INCORPORATION OF DOCUMENTS BY REFERENCE

                  Rubio's Restaurants, Inc. incorporates by reference into this
Registration Statement the following documents previously filed with the SEC:

         (a)      Our Registration Statement No. 333-75087 on Form S-1 filed
                  with the SEC on March 26, 1999, together with the amendments
                  filed with the SEC on April 30, 1999, May 14, 1999 and May 20,
                  1999.

         (b)      Our prospectus filed with the SEC on May 21, 1999 under Rule
                  424(b) promulgated under the Securities Act of 1933, in
                  connection with our Registration Statement No. 333-75087,
                  which includes the audited financial statements for the year
                  ended December 27, 1998.

         (c)      Our Registration Statement No. 000-26125 on Form 8-A filed
                  with the SEC on May 18, 1999, in which we describe the terms,
                  rights and provisions applicable to our outstanding common
                  stock.

                  All reports and definitive proxy or information statements 
filed under Section 13(a), 13(c), 14 or 15(d) of the Securities Exchange Act 
of 1934, after the date of this Registration Statement and prior to the 
filing of a post-effective amendment which indicates that all securities 
offered under this Registration Statement have been sold or which deregisters 
all securities then remaining unsold shall be deemed to be incorporated by 
reference into this Registration Statement and to be a part of this 
Registration Statement from the date of filing of such documents. Any 
statement contained in a document incorporated or deemed to be incorporated 
by reference in this Registration Statement shall be deemed to be modified or 
superseded for purposes of this Registration Statement to the extent that a 
statement contained in this Registration Statement or in any subsequently 
filed document which also is deemed to be incorporated by reference in this 
Registration Statement modifies or supersedes such statement. Any such 
statement so modified or superseded shall not be deemed, except as so 
modified or superseded, to constitute a part of this Registration Statement.

ITEM 4.  DESCRIPTION OF SECURITIES

         Not applicable.

ITEM 5.  INTERESTS OF NAMED EXPERTS AND COUNSEL

         Not applicable.

ITEM 6.  INDEMNIFICATION OF DIRECTORS AND OFFICERS

         Our certificate provides that, except to the extent prohibited by
Delaware law, our directors shall not be personally liable to us or our
stockholders for monetary damages for breach of their fiduciary duty as
directors. Under Delaware law, the directors have a fiduciary duty to us which
is not eliminated by this provision of our certificate and, in appropriate
circumstances, equitable remedies such as injunctive or other forms of
non-monetary relief will remain available. In addition, each director will
continue to be subject to liability under Delaware law for breach of their duty
of loyalty to us or our stockholders; for acts or omissions which are found by a
court of competent jurisdiction to be not in good faith or which involve
intentional misconduct or knowing violations of law; for actions leading to
improper personal benefit to the director; and for payment of dividends or
approval of stock repurchases or redemptions that are prohibited by Delaware
law. This provision also does not affect the directors' responsibilities under
any other laws, such as the federal securities laws or state or federal
environmental laws.

                                       II-1
<PAGE>

         Section 145 of the Delaware General Corporation Law allows a 
corporation to indemnify its directors and officers and to purchase insurance 
with respect to liability arising out of their capacity or status as 
directors and officers, provided that the indemnification does not eliminate 
or limit the liability of a director for the following:

         -    any breach of the director's duty of loyalty to us or our 
              stockholders;

         -    acts or omissions not in good faith or which involve 
              intentional misconduct or a knowing violation of law;

         -    unlawful payments of dividends or unlawful stock purchases or 
              redemptions; and

         -    any transaction from which the director derived an improper 
              personal benefit.

         Delaware law further provides that the permitted indemnification 
shall not be deemed exclusive of any other rights to which the directors and 
officers may be entitled under our bylaws, any agreement, a vote of 
stockholders or otherwise. Our certificate eliminates the personal liability 
of directors to the fullest extent permitted by Delaware law. In addition, 
our certificate provides that we may fully indemnify any person through bylaw 
provisions, agreements with such person, vote of stockholders or 
disinterested directors or otherwise, in excess of the indemnification and 
advancement otherwise permitted by Section 145 of the Delaware General 
Corporation Law, subject only to limits created by applicable Delaware law 
(statutory or non-statutory), with respect to action for breach of duty to 
us, our stockholders or others.

         We have also entered into agreements to indemnify our directors and
executive officers, in addition to the indemnification provided for in our
bylaws. We believe that these provisions and agreements are necessary to attract
and retain qualified directors and executive officers. Our bylaws also permit us
to secure insurance on behalf of any officer, director, employee or other agent
for any liability arising out of his or her actions, regardless of whether
Delaware law would permit indemnification. We plan to apply for liability
insurance for our officers and directors.

ITEM 7.  EXEMPTION FROM REGISTRATION CLAIMED

         Not applicable.

ITEM 8.  EXHIBITS

EXHIBIT NUMBER    EXHIBIT

   4              Instruments Defining the Rights of Stockholders. Reference is
                  made to the Registration Statement on Form 8-A, filed on May
                  18, 1999, incorporated by reference under Item 3(c).
   5              Opinion and Consent of Brobeck, Phleger & Harrison LLP.
   23.1           Consent of Deloitte & Touche LLP, Independent Auditors.
   23.2           Consent of Brobeck, Phleger & Harrison LLP is contained in 
                  Exhibit 5.
   24             Power of Attorney.  Reference is made to page II-4 of this 
                  Registration Statement.
   99.1+          1999 Stock Incentive Plan (Exhibit 10.45).
   99.2           Form of Notice of Grant of Stock Option.
   99.3           Form of Stock Option Agreement.
   99.4           Form of Addendum to Stock Option Agreement-Involuntary 
                  Termination.
   99.5           Form of Addendum to Stock Option Agreement-Stock 
                  Appreciation Right.
   99.6           Form of Stock Issuance Agreement.
   99.7           Form of Addendum to Stock Issuance Agreement.
   99.8+          1999 Employee Stock Purchase Plan (Exhibit 10.46).
   99.9           Form of Enrollment/Change Form.
   99.10          Form of Stock Purchase Agreement.

   +  Incorporated by reference to our Registration Statement on Form S-1
      (333-75087) filed with the SEC on March 26, 1999, as amended.

ITEM 9.  UNDERTAKINGS

                  A. The undersigned Registrant hereby undertakes: (1) to 
file, during any period in which offers or sales are being made, a 
post-effective amendment to this Registration Statement: (i) to include any 
prospectus required by Section 10(a)(3) of the Securities Act of 1933; (ii) 
to reflect in the prospectus any facts or events arising after the effective 
date of this Registration Statement (or the most recent post-effective 
amendment thereof) which, individually or in the aggregate, represent a 
fundamental change in the information set forth in this Registration 
Statement; and (iii) to include any material information with respect to the 
plan of distribution not previously disclosed in this Registration Statement 
or any material change to such information in this Registration Statement; 
provided, however, that clauses (1)(i) and (1)(ii) shall not apply if the 
information required to be included in a post-effective amendment by those 
clauses is contained in periodic reports filed by the Registrant pursuant to 
Section 13 or Section 15(d) of the Exchange Act that are incorporated by 
reference into this Registration Statement; (2) that for the purpose of 
determining any liability under the Securities Act of 1933, 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; and (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 Rubio's Restaurants, Inc. 1999 Stock Incentive Plan and 
1999 Employee Stock Purchase Plan.

                  B. The undersigned Registrant hereby undertakes that, for 
purposes of determining any liability under the Securities Act of 1933, each 
filing of the Registrant's annual report pursuant to Section 13(a) or Section 
15(d) of the Exchange Act of 1934 that is incorporated by reference into this 
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.

                  C. Insofar as indemnification for liabilities arising under 
the Securities Act of 1933 may be permitted to directors, officers or 
controlling persons of the Registrant pursuant to the indemnification 
provisions summarized in Item 6 or otherwise, the Registrant has been advised 
that, in the opinion of the Commission, such indemnification is against 
public policy as expressed in the Securities Act and is, therefore, 
unenforceable. In the event that a claim for indemnification against such 
liabilities (other than the payment by the Registrant of expenses incurred or 
paid by a director, officer, or controlling person of the Registrant in the 
successful defense of any action, suit or proceeding) is asserted by such 
director, officer or controlling person in connection with the securities 
being registered, the Registrant will, unless in the opinion of its counsel 
the matter has been settled by controlling precedent, submit to a court of 
appropriate jurisdiction the question whether such indemnification by it is 
against public policy as expressed in the 1933 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 Diego, State of 
California on this 21st day of May, 1999.

                                           RUBIO'S RESTAURANTS, INC.


                                           By:     /S/ RALPH RUBIO      
                                              ---------------------------------
                                                    Ralph Rubio
                                                    President and Chief 
                                                    Executive Officer

                                POWER OF ATTORNEY

                  KNOW ALL PERSONS BY THESE PRESENTS, that each person whose 
signature appears below constitutes and appoints Ralph Rubio, President and 
Chief Executive Officer, and Joseph N. Stein, Chief Strategic and Chief 
Financial Officer, and each of them, as such person's true and lawful 
attorneys-in-fact and agents, with full power of substitution and 
resubstitution, for such person and in such person's name, place and stead, 
in any and all capacities, to sign any and all amendments (including 
post-effective amendments) to this Registration Statement, and to file same, 
with all exhibits thereto, and other documents in connection therewith, with 
the Securities and Exchange Commission, granting unto said attorneys-in-fact 
and agents, and each of them, full power and authority to do and perform each 
and every act and thing requisite and necessary to be done in connection 
therewith, as fully to all intents and purposes as such person might or could 
do in person, hereby ratifying and confirming all that said attorneys-in-fact 
and agents, or any of them, or their or his or her substitutes, may lawfully 
do or cause to be done by virtue thereof.

                  Pursuant to the requirements of the Securities Act of 1933, 
as amended, this Registration Statement has been signed below by the 
following persons on behalf of the Registrant and in the capacities and on 
the dates indicated:

<TABLE>
<CAPTION>
SIGNATURE                                       TITLE                                              DATE
<S>                                             <C>                                                <C>

  /S/ RALPH RUBIO                               President, Chief Executive Officer                 May 21, 1999
- -----------------------------------             and Director (principal executive officer)
Ralph Rubio                        


 /S/ JOSEPH N. STEIN                            Chief Strategic and Financial Officer              May 21, 1999
- -----------------------------------             (principal financial and accounting officer)
Joseph N. Stein                    


 /S/ KYLE A. ANDERSON                           Director                                           May 21, 1999
- -----------------------------------
Kyle A. Anderson


 /S/ JASON M. FISH                              Director                                           May 21, 1999
- -----------------------------------
Jason M. Fish


 /S/ RAFAEL RUBIO                               Director                                           May 21, 1999
- -----------------------------------
Rafael Rubio

                                      II-4
<PAGE>


 /S/ ROBERT RUBIO                               Director                                           May 21, 1999
- -----------------------------------
Robert Rubio


 /S/ KIM LOPDRUP                                Director                                           May 21, 1999
- -----------------------------------
Kim Lopdrup


 /S/ TIMOTHY J. RYAN                            Director                                           May 21, 1999
- -----------------------------------
Timothy J. Ryan


 /S/ MICHAEL DOOLING                            Director                                           May 21, 1999
- -----------------------------------
Michael Dooling
</TABLE>


                                      II-5
<PAGE>

                                       
                       SECURITIES AND EXCHANGE COMMISSION

                             WASHINGTON, D.C. 20549


                                   EXHIBITS

                                      TO

                                   FORM S-8

                                     UNDER

                            SECURITIES ACT OF 1933


                           RUBIO'S RESTAURANTS, INC.

<PAGE>

                                       
                                 EXHIBIT INDEX

<TABLE>
<CAPTION>
EXHIBIT NUMBER    EXHIBIT
<S>               <C>
   4              Instruments Defining the Rights of Stockholders. Reference is
                  made to the Registration Statement on Form 8-A, filed on May
                  18, 1999, incorporated by reference under Item 3(c).
   5              Opinion and Consent of Brobeck, Phleger & Harrison LLP.
   23.1           Consent of Deloitte & Touche LLP, Independent Auditors.
   23.2           Consent of Brobeck, Phleger & Harrison LLP is contained in
                  Exhibit 5.
   24             Power of Attorney.  Reference is made to page II-4 of this 
                  Registration Statement.
   99.1+          1999 Stock Incentive Plan (Exhibit 10.45).
   99.2           Form of Notice of Grant of Stock Option.
   99.3           Form of Stock Option Agreement.
   99.4           Form of Addendum to Stock Option Agreement-Involuntary
                  Termination.
   99.5           Form of Addendum to Stock Option Agreement-Stock
                  Appreciation Right.
   99.6           Form of Stock Issuance Agreement.
   99.7           Form of Addendum to Stock Issuance Agreement.
   99.8+          1999 Employee Stock Purchase Plan (Exhibit 10.46).
   99.9           Form of Enrollment/Change Form.
   99.10          Form of Stock Purchase Agreement.

</TABLE>

   +  Incorporated by reference to our Registration Statement on Form S-1
      (333-75087) filed with the SEC on March 26, 1999, as amended.


<PAGE>

                                    EXHIBIT 5

             OPINION AND CONSENT OF BROBECK, PHLEGER & HARRISON LLP


                                  May 21, 1999


Rubio's Restaurants, Inc.
1902 Wright Place, Suite 300
Carlsbad, California  92008

                  Re:      Rubio's Restaurants, Inc. Registration Statement on
                           Form S-8 for (i) 1,123,938 Shares of Common Stock
                           Issuable Under the 1999 Stock Incentive Plan and (ii)
                           200,000 Shares of Common Stock Issuable Under the
                           1999 Employee Stock Purchase Plan

Ladies and Gentlemen:

                  We have acted as counsel to Rubio's Restaurants, Inc., a
Delaware corporation (the "Company"), in connection with the registration on
Form S-8 (the "Registration Statement") under the Securities Act of 1933, as
amended, of 1,123,938 shares of common stock and related stock options issuable
under the Rubio's Restaurants, Inc. 1999 Stock Incentive Plan (the "Option
Plan") and 200,000 shares of common stock issuable under the Rubio's
Restaurants, Inc. 1999 Employee Stock Purchase Plan (the "Purchase Plan"). All
of such shares of common stock are collectively referred to herein as the
"Shares."

                  This opinion is being furnished in accordance with the
requirements of Item 8 of Form S-8 and Item 601(b)(5)(i) of Regulation S-K.

                  We have reviewed the Company's charter documents and the
corporate proceedings taken by the Company in connection with the establishment
and administration of the Option Plan and the Purchase Plan. Based on such
review, we are of the opinion that if, as and when the 1,323,938 Shares reserved
in the aggregate under the Option Plan and the Purchase Plan have been issued
and sold (and the consideration therefor received) pursuant to (a) the
provisions of option agreements duly authorized under the Option Plan and in
accordance with the Registration Statement, or (b) duly authorized direct stock
issuances in accordance with the Option Plan and the Purchase Plan and in
accordance with the Registration Statement, those Shares will be legally issued,
fully paid and nonassessable.

                  We consent to the filing of this opinion letter as Exhibit 5
to the Registration Statement.

                  This opinion letter is rendered as of the date first written
above and we disclaim any obligation to advise you of facts, circumstances,
events or developments which hereafter may be brought to our attention and which
may alter, affect or modify the opinion expressed herein. Our opinion is
expressly limited to the matters set forth above and we render no opinion,
whether by implication or otherwise, as to any other matters relating to the
Company, the Option Plan, the Purchase Plan or the Shares.



                                      Very truly yours,


                                      /s/ Brobeck, Phleger & Harrison LLP

                                      BROBECK, PHLEGER & HARRISON LLP



                                     8.

<PAGE>

                                  EXHIBIT 23.1
                                       
                         INDEPENDENT AUDITORS' CONSENT


         We consent to the incorporation by reference in this Registration 
Statement of Rubio's Restaurants, Inc. on Form S-8 of our report dated March
25, 1999 appearing in the Registration Statement No. 333-75087 on Form S-1 of 
Rubio's Restaurants, Inc. for the year ended December 27, 1998.




DELOITTE & TOUCHE LLP

/s/ Deloitte & Touche LLP

San Diego, California
May 20, 1999


<PAGE>

                                                                   EXHIBIT 99.2

                            RUBIO'S RESTAURANTS, INC.
                         NOTICE OF GRANT OF STOCK OPTION
                         -------------------------------



                  Notice is hereby given of the following option grant (the
"Option") to purchase shares of the Common Stock of Rubio's Restaurants, Inc.
(the "Corporation"):

                  OPTIONEE:
                            ---------------------------------------------------
                  GRANT DATE:
                              -------------------------------------------------
                  VESTING COMMENCEMENT DATE:
                                             ----------------------------------
                  EXERCISE PRICE:  $                                  per share
                                    ---------------------------------
                  NUMBER OF OPTION SHARES:                               shares
                                           -----------------------------
                  EXPIRATION DATE:
                                   --------------------------------------------

                  TYPE OF OPTION:           Incentive Stock Option
                                     -----

                                            Non-Statutory Stock Option
                                     -----

                  EXERCISE SCHEDULE: The Option shall become exercisable for 
                  twenty-five percent (25%) of the Option Shares upon 
                  Optionee's completion of one (1) year of Service measured 
                  from the Vesting Commencement Date and shall become 
                  exercisable for the balance of the Option Shares in 
                  thirty-six (36) successive equal monthly installments upon 
                  Optionee's completion of each additional month of Service 
                  over the thirty-six (36) month period measured from the first 
                  anniversary of the Vesting Commencement Date. In no event 
                  shall the Option become exercisable for any additional Option 
                  Shares after Optionee's cessation of Service.

                  Optionee understands and agrees that the Option is granted 
subject to and in accordance with the terms of the Rubio's Restaurants, Inc. 
1999 Stock Incentive Plan (the "Plan"). Optionee further agrees to be bound 
by the terms of the Plan and the terms of the Option as set forth in the 
Stock Option Agreement attached hereto as EXHIBIT A. Optionee hereby 
acknowledges the receipt of a copy of the official prospectus for the Plan in 
the form attached hereto as EXHIBIT B. A copy of the Plan is available upon 
request made to the Corporate Secretary at the Corporation's principal 
offices.

<PAGE>



                  EMPLOYMENT AT WILL. Nothing in this Notice or in the 
attached Stock Option Agreement or in the Plan shall confer upon Optionee any 
right to continue in Service for any period of specific duration or interfere 
with or otherwise restrict in any way the rights of the Corporation (or any 
Parent or Subsidiary employing or retaining Optionee) or of Optionee, which 
rights are hereby expressly reserved by each, to terminate Optionee's Service 
at any time for any reason, with or without cause.

                  DEFINITIONS. All capitalized terms in this Notice shall 
have the meaning assigned to them in this Notice or in the attached Stock 
Option Agreement.

DATED:
       ------------------------------


                                       RUBIO'S RESTAURANTS, INC.

                                       By:
                                           -----------------------------------
                                       Title:
                                              --------------------------------


                                       ---------------------------------------
                                                       OPTIONEE

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

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








                                      2


<PAGE>

                                                                EXHIBIT 99.3


                             RUBIO'S RESTAURANTS, INC.
                              STOCK OPTION AGREEMENT
                             -------------------------

RECITALS

          A.   The Board has adopted the Plan for the purpose of retaining the
services of selected Employees, non-employee members of the Board or of the
board of directors of any Parent or Subsidiary and consultants and other
independent advisors who provide services to the Corporation (or any Parent or
Subsidiary).

          B.   Optionee is to render valuable services to the Corporation (or a
Parent or Subsidiary), and this Agreement is executed pursuant to, and is
intended to carry out the purposes of, the Plan in connection with the
Corporation's grant of an option to Optionee.

          C.   All capitalized terms in this Agreement shall have the meaning
assigned to them in the attached Appendix.

          NOW, THEREFORE, it is hereby agreed as follows:

          1.   GRANT OF OPTION.  The Corporation hereby grants to Optionee, as
of the Grant Date, an option to purchase up to the number of Option Shares
specified in the Grant Notice.  The Option Shares shall be purchasable from time
to time during the option term specified in Paragraph 2 at the Exercise Price.

          2.   OPTION TERM.  This option shall have a maximum term of ten (10)
years measured from the Grant Date and shall accordingly expire at the close of
business on the Expiration Date, unless sooner terminated in accordance with
Paragraph 5 or 6.

          3.   LIMITED TRANSFERABILITY.  

               (a)  This option shall be neither transferable nor assignable by
Optionee other than by will or by the laws of descent and distribution following
Optionee's death and may be exercised, during Optionee's lifetime, only by
Optionee.  However, Optionee may  designate one or more persons as the
beneficiary or beneficiaries of this option, and  this option shall, in
accordance with such designation, automatically be transferred to such
beneficiary or beneficiaries upon the Optionee's death while holding such
option.  Such beneficiary or beneficiaries shall take the transferred option
subject to all the terms and conditions of this Agreement, including (without
limitation) the limited time period during which this option may, pursuant to
Paragraph 5, be exercised following Optionee's death.

               (b)  If this option is designated a Non-Statutory Option in the
Grant Notice, then this option may, in connection with the Optionee's estate
plan, be assigned in whole or in part during Optionee's lifetime to one or more
members of Optionee's immediate family or to a trust established for the
exclusive benefit of one or more such family members.  The assigned portion
shall be exercisable only by the person or persons who acquire a proprietary
interest in the option pursuant to such assignment.  The terms applicable to the
assigned portion shall be the same as those in effect for this option
immediately prior to such assignment.

<PAGE>

          4.   DATES OF EXERCISE.  This option shall become exercisable for the
Option Shares in one or more installments as specified in the Grant Notice.  As
the option becomes exercisable for such installments, those installments shall
accumulate and the option shall remain exercisable for the accumulated
installments until the Expiration Date or sooner termination of the option term
under Paragraph 5 or 6.

          5.   CESSATION OF SERVICE.  The option term specified in Paragraph 2
shall terminate (and this option shall cease to be outstanding) prior to the
Expiration Date should any of the following provisions become applicable:

               (a)  Should Optionee cease to remain in Service for any reason
(other than death, Permanent Disability or Misconduct) while holding this
option, then Optionee shall have a period of three (3) months (commencing with
the date of such cessation of Service) during which to exercise this option, but
in no event shall this option be exercisable at any time after the Expiration
Date.

               (b)  Should Optionee die while holding this option, then the
personal representative of Optionee's estate or the person or persons to whom
the option is transferred pursuant to Optionee's will or in accordance with the
laws of inheritance shall have the right to exercise this option.  However, if
Optionee has designated one or more beneficiaries of this option, then those
persons shall have the exclusive right to exercise this option following
Optionee's death.  Such right shall lapse, and this option shall cease to be
outstanding, upon the EARLIER of (i) the expiration of the twelve (12)-month
period measured from the date of Optionee's death or (ii) the Expiration Date.

               (c)  Should Optionee cease Service by reason of Permanent
Disability while holding this option, then Optionee shall have a period of
twelve (12) months (commencing with the date of such cessation of Service)
during which to exercise this option.  In no event shall this option be
exercisable at any time after the Expiration Date.

               (d)  During the limited period of post-Service exercisability,
this option may not be exercised in the aggregate for more than the number of
Option Shares for which the option is exercisable at the time of Optionee's
cessation of Service.  Upon the expiration of such limited exercise period or
(if earlier) upon the Expiration Date, this option shall terminate and cease to
be outstanding for any exercisable Option Shares for which the option has not
been exercised.  However, this option shall, immediately upon Optionee's
cessation of Service for any reason, terminate and cease to be outstanding with
respect to any Option Shares for which this option is not otherwise at that time
exercisable.

               (e)  Should Optionee's Service be terminated for Misconduct, then
this option shall terminate immediately and cease to remain outstanding.

                                      2

<PAGE>

          6.   SPECIAL ACCELERATION OF OPTION.

               (a)  This option, to the extent outstanding at the time of a
Corporate Transaction but not otherwise fully exercisable, shall automatically
accelerate so that this option shall, immediately prior to the effective date of
such Corporate Transaction, become exercisable for all of the Option Shares at
the time subject to this option and may be exercised for any or all of those
Option Shares as fully vested shares of Common Stock.  No such acceleration of
this option shall occur, however, if and to the extent: (i) this option is, in
connection with the Corporate Transaction, to be assumed by the successor
corporation (or parent thereof) or (ii) this option is to be replaced with a
cash incentive program of the successor corporation which preserves the spread
existing at the time of the Corporate Transaction on the Option Shares for which
this option is not otherwise at that time exercisable (the excess of the Fair
Market Value of those Option Shares over the aggregate Exercise Price payable
for such shares) and provides for subsequent payout in accordance with the same
option exercise/vesting schedule set forth in the Grant Notice.

               (b)  Immediately following the Corporate Transaction, this option
shall terminate and cease to be outstanding, except to the extent assumed by the
successor corporation (or parent thereof) in connection with the Corporate
Transaction.

               (c)  If this option is assumed in connection with a Corporate
Transaction, then this option shall be appropriately adjusted, immediately after
such Corporate Transaction, to apply to the number and class of securities which
would have been issuable to Optionee in consummation of such Corporate
Transaction had the option been exercised immediately prior to such Corporate
Transaction, and appropriate adjustments shall also be made to the Exercise
Price, PROVIDED the aggregate Exercise Price shall remain the same.

               (d)  This Agreement shall not in any way affect the right of the
Corporation to adjust, reclassify, reorganize or otherwise change its capital or
business structure or to merge, consolidate, dissolve, liquidate or sell or
transfer all or any part of its business or assets.

          7.   ADJUSTMENT IN OPTION SHARES.  Should any change be made to the
Common Stock by reason of any stock split, stock dividend, recapitalization,
combination of shares, exchange of shares or other change affecting the
outstanding Common Stock as a class without the Corporation's receipt of
consideration, appropriate adjustments shall be made to (i) the total number
and/or class of securities subject to this option and (ii) the Exercise Price in
order to reflect such change and thereby preclude a dilution or enlargement of
benefits hereunder.

          8.   STOCKHOLDER RIGHTS.  The holder of this option shall not have any
stockholder rights with respect to the Option Shares until such person shall
have exercised the option, paid the Exercise Price and become a holder of record
of the purchased shares.

                                      3

<PAGE>

          9.   MANNER OF EXERCISING OPTION.

               (a)  In order to exercise this option with respect to all or any
part of the Option Shares for which this option is at the time exercisable,
Optionee (or any other person or persons exercising the option) must take the
following actions:

                    (i)  Execute and deliver to the Corporation a Notice of 
     Exercise for the Option Shares for which the option is exercised.

                    (ii) Pay the aggregate Exercise Price for the purchased 
     shares in one or more of the following forms:

                         (A)  cash or check made payable to the
          Corporation;

                         (B)  a promissory note payable to the Corporation,
          but only to the extent authorized by the Plan Administrator in
          accordance with Paragraph 13;

                         (C)  shares of Common Stock held by Optionee (or
          any other person or persons exercising the option) for the
          requisite period necessary to avoid a charge to the Corporation's
          earnings for financial reporting purposes and valued at Fair
          Market Value on the Exercise Date; or

                         (D)  through a special sale and remittance
          procedure pursuant to which Optionee (or any other person or
          persons exercising the option) shall concurrently provide
          irrevocable instructions (i) to a Corporation-designated
          brokerage firm to effect the immediate sale of the purchased
          shares and remit to the Corporation, out of the sale proceeds
          available on the settlement date, sufficient funds to cover the
          aggregate Exercise Price payable for the purchased shares plus
          all applicable Federal, state and local income and employment
          taxes required to be withheld by the Corporation by reason of
          such exercise and (ii) to the Corporation to deliver the
          certificates for the purchased shares directly to such brokerage
          firm in order to complete the sale.

               Except to the extent the sale and remittance procedure is
          utilized in connection with the option exercise, payment of the
          Exercise Price must accompany the Notice of Exercise delivered to
          the Corporation in connection with the option exercise.

                    (iii) Furnish to the Corporation appropriate documentation
     that the person or persons exercising the option (if other than Optionee)
     have the right to exercise this option.

                                      4

<PAGE>

                    (iv) Make appropriate arrangements with the Corporation (or
     Parent or Subsidiary employing or retaining Optionee) for the satisfaction
     of all Federal, state and local income and employment tax withholding
     requirements applicable to the option exercise.

               (b)  As soon as practical after the Exercise Date, the
Corporation shall issue to or on behalf of Optionee (or any other person or
persons exercising this option) a certificate for the purchased Option Shares,
with the appropriate legends affixed thereto.

               (c)  In no event may this option be exercised for any fractional
shares.

          10.  COMPLIANCE WITH LAWS AND REGULATIONS.

               (a)  The exercise of this option and the issuance of the Option
Shares upon such exercise shall be subject to compliance by the Corporation and
Optionee with all applicable requirements of law relating thereto and with all
applicable regulations of any stock exchange (or the Nasdaq National Market, if
applicable) on which the Common Stock may be listed for trading at the time of
such exercise and issuance.

               (b)  The inability of the Corporation to obtain approval from 
any regulatory body having authority deemed by the Corporation to be 
necessary to the lawful issuance and sale of any Common Stock pursuant to 
this option shall relieve the Corporation of any liability with respect to 
the non-issuance or sale of the Common Stock as to which such approval shall 
not have been obtained. The Corporation, however, shall use its best efforts 
to obtain all such approvals.

          11.  SUCCESSORS AND ASSIGNS.  Except to the extent otherwise provided
in Paragraphs 3 and 6, the provisions of this Agreement shall inure to the
benefit of, and be binding upon, the Corporation and its successors and assigns
and Optionee, Optionee's assigns, the legal representatives, heirs and legatees
of Optionee's estate and any beneficiaries of this option designated by
Optionee.

          12.  NOTICES.  Any notice required to be given or delivered to the
Corporation under the terms of this Agreement shall be in writing and addressed
to the Corporation at its principal corporate offices.  Any notice required to
be given or delivered to Optionee shall be in writing and addressed to Optionee
at the address indicated below Optionee's signature line on the Grant Notice. 
All notices shall be deemed effective upon personal delivery or upon deposit in
the U.S. mail, postage prepaid and properly addressed to the party to be
notified.

          13.  FINANCING.  The Plan Administrator may, in its absolute
discretion and without any obligation to do so, permit Optionee to pay the
Exercise Price for the purchased Option Shares by delivering a full-recourse
promissory note payable to the Corporation.  The terms of any such promissory
note (including the interest rate, the requirements for collateral and the terms
of repayment) shall be established by the Plan Administrator in its sole
discretion.

                                    5

<PAGE>

          14.  CONSTRUCTION.  This Agreement and the option evidenced hereby 
are made and granted pursuant to the Plan and are in all respects limited by 
and subject to the terms of the Plan.  All decisions of the Plan 
Administrator with respect to any question or issue arising under the Plan or 
this Agreement shall be conclusive and binding on all persons having an 
interest in this option.

          15.  GOVERNING LAW.  The interpretation, performance and enforcement
of this Agreement shall be governed by the laws of the State of California
without resort to that State's conflict-of-laws rules.

          16.  EXCESS SHARES.  If the Option Shares covered by this Agreement
exceed, as of the Grant Date, the number of shares of Common Stock which may
without stockholder approval be issued under the Plan, then this option shall be
void with respect to those excess shares, unless stockholder approval of an
amendment sufficiently increasing the number of shares of Common Stock issuable
under the Plan is obtained in accordance with the provisions of the Plan.

          17.  ADDITIONAL TERMS APPLICABLE TO AN INCENTIVE OPTION.  In the event
this option is designated an Incentive Option in the Grant Notice, the following
terms and conditions shall also apply to the grant:

               (a)  This option shall cease to qualify for favorable tax
treatment as an Incentive Option if (and to the extent) this option is exercised
for one or more Option Shares: (A) more than three (3) months after the date
Optionee ceases to be an Employee for any reason other than death or Permanent
Disability or (B) more than twelve (12) months after the date Optionee ceases to
be an Employee by reason of Permanent Disability.

               (b)  No installment under this option shall qualify for favorable
tax treatment as an Incentive Option if (and to the extent) the aggregate Fair
Market Value (determined at the Grant Date) of the Common Stock for which such
installment first becomes exercisable hereunder would, when added to the
aggregate value (determined as of the respective date or dates of grant) of the
Common Stock or other securities for which this option or any other Incentive
Options granted to Optionee prior to the Grant Date (whether under the Plan or
any other option plan of the Corporation or any Parent or Subsidiary) first
become exercisable during the same calendar year, exceed One Hundred Thousand
Dollars ($100,000) in the aggregate.  Should such One Hundred Thousand Dollar
($100,000) limitation be exceeded in any calendar year, this option shall
nevertheless become exercisable for the excess shares in such calendar year as a
Non-Statutory Option.

               (c)  Should the exercisability of this option be accelerated upon
a Corporate Transaction, then this option shall qualify for favorable tax
treatment as an Incentive Option only to the extent the aggregate Fair Market
Value (determined at the Grant Date) of the Common Stock for which this option
first becomes exercisable in the calendar year in which the Corporate
Transaction occurs does not, when added to the aggregate value (determined as of
the respective date or dates of grant) of the Common Stock or other securities
for which this option 

                                      6

<PAGE>

or one or more other Incentive Options granted to Optionee prior to the Grant
Date (whether under the Plan or any other option plan of the Corporation or any
Parent or Subsidiary) first become exercisable during the same calendar year,
exceed One Hundred Thousand Dollars ($100,000) in the aggregate.  Should the
applicable One Hundred Thousand Dollar ($100,000) limitation be exceeded in the
calendar year of such Corporate Transaction, the option may nevertheless be
exercised for the excess shares in such calendar year as a Non-Statutory Option.

               (d)  Should Optionee hold, in addition to this option, one or
more other options to purchase Common Stock which become exercisable for the
first time in the same calendar year as this option, then the foregoing
limitations on the exercisability of such options as Incentive Options shall be
applied on the basis of the order in which such options are granted.

                                      7

<PAGE>

                                          
                                     EXHIBIT I
                                          
                                 NOTICE OF EXERCISE


          I hereby notify Rubio's Restaurants, Inc. (the "Corporation") that I
elect to purchase _____________ shares of the Corporation's Common Stock (the
"Purchased Shares") at the option exercise price of $____________ per share (the
"Exercise Price") pursuant to that certain option (the "Option") granted to me
under the Corporation's 1999 Stock Incentive Plan on _________________, _______.

          Concurrently with the delivery of this Exercise Notice to the
Corporation, I shall hereby pay to the Corporation the Exercise Price for the
Purchased Shares in accordance with the provisions of my agreement with the
Corporation (or other documents) evidencing the Option and shall deliver
whatever additional documents may be required by such agreement as a condition
for exercise.  Alternatively, I may utilize the special broker-dealer sale and
remittance procedure specified in my agreement to effect payment of the Exercise
Price.

     
- -----------------,---------
Date


                                            ----------------------------------
                                            Optionee
          
                                            Address:--------------------------
          
                                            ----------------------------------

          
Print name in exact manner it is to 
appear on the stock certificate:                 
                                            ----------------------------------
          
Address to which certificate is to 
be sent, if different from address 
above:         
                                            ----------------------------------

          
                                            ----------------------------------
          
Social Security Number:
                                            ----------------------------------

<PAGE>

                                      APPENDIX


          The following definitions shall be in effect under the Agreement:

     A.   AGREEMENT shall mean this Stock Option Agreement.

     B.   BOARD shall mean the Corporation's Board of Directors.

     C.   COMMON STOCK shall mean shares of the Corporation's common stock.

     D.   CODE shall mean the Internal Revenue Code of 1986, as amended.

     E.   CORPORATE TRANSACTION shall mean either of the following 
stockholder-approved transactions to which the Corporation is a party:

               (i)  a merger or consolidation in which securities
     possessing more than fifty percent (50%) of the total combined voting
     power of the Corporation's outstanding securities are transferred to a
     person or persons different from the persons holding those securities
     immediately prior to such transaction, or

               (ii) the sale, transfer or other disposition of all or
     substantially all of the Corporation's assets in complete liquidation
     or dissolution of the Corporation.

     F.   CORPORATION shall mean Rubio's Restaurants, Inc., a Delaware
corporation, and any successor corporation to all or substantially all of the
assets or voting stock of Rubio's Restaurants, Inc.  which shall by appropriate
action adopt the Plan. 

     G.   EMPLOYEE shall mean an individual who is in the employ of the
Corporation (or any Parent or Subsidiary), subject to the control and direction
of the employer entity as to both the work to be performed and the manner and
method of performance.

     H.   EXERCISE DATE shall mean the date on which the option shall have been
exercised in accordance with Paragraph 9 of the Agreement.

     I.   EXERCISE PRICE shall mean the exercise price per Option Share as
specified in the Grant Notice.

     J.   EXPIRATION DATE shall mean the date on which the option expires as
specified in the Grant Notice.

     K.   FAIR MARKET VALUE per share of Common Stock on any relevant date shall
be determined in accordance with the following provisions:

                                    A-1

<PAGE>

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

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

     L.   GRANT DATE shall mean the date of grant of the option as specified in
the Grant Notice.

     M.   GRANT NOTICE shall mean the Notice of Grant of Stock Option
accompanying the Agreement, pursuant to which Optionee has been informed of the
basic terms of the option evidenced hereby.

     N.   INCENTIVE OPTION shall mean an option which satisfies the requirements
of Code Section 422.

     O.   MISCONDUCT shall mean the commission of any act of fraud, embezzlement
or dishonesty by Optionee, any unauthorized use or disclosure by Optionee of
confidential information or trade secrets of the Corporation (or any Parent or
Subsidiary), or any other intentional misconduct by Optionee adversely affecting
the business or affairs of the Corporation (or any Parent or Subsidiary) in a
material manner.  The foregoing definition shall not be deemed to be inclusive
of all the acts or omissions which the Corporation (or any Parent or Subsidiary)
may consider as grounds for the dismissal or discharge of Optionee or any other
individual in the Service of the Corporation (or any Parent or Subsidiary).

     P.   NON-STATUTORY OPTION shall mean an option not intended to satisfy the
requirements of Code Section 422.

     Q.   NOTICE OF EXERCISE shall mean the notice of exercise in the form
attached hereto as Exhibit I.

     R.   OPTION SHARES shall mean the number of shares of Common Stock subject
to the option as specified in the Grant Notice.

                                    A-2

<PAGE>

     S.   OPTIONEE shall mean the person to whom the option is granted as 
specified in the Grant Notice.

     T.   PARENT shall mean any corporation (other than the Corporation) in an
unbroken chain of corporations ending with the Corporation, provided each
corporation in the unbroken chain (other than the Corporation) owns, at the time
of the determination, stock possessing fifty percent (50%) or more of the total
combined voting power of all classes of stock in one of the other corporations
in such chain.

     U.   PERMANENT DISABILITY shall mean the inability of Optionee to engage in
any substantial gainful activity by reason of any medically determinable
physical or mental impairment which is expected to result in death or has lasted
or can be expected to last for a continuous period of twelve (12) months or
more.

     V.   PLAN shall mean the Corporation's 1999 Stock Incentive Plan.

     W.   PLAN ADMINISTRATOR shall mean either the Board or a committee of the
Board acting in its capacity as administrator of the Plan. 

     X.   SERVICE shall mean the Optionee's performance of services for the 
Corporation (or any Parent or Subsidiary) in the capacity of an Employee, a 
non-employee member of the board of directors or a consultant or independent 
advisor.

     Y.   STOCK EXCHANGE shall mean the American Stock Exchange or the New York
Stock Exchange.

     Z.   SUBSIDIARY shall mean any corporation (other than the Corporation) in
an unbroken chain of corporations beginning with the Corporation, provided each
corporation (other than the last corporation) in the unbroken chain owns, at the
time of the determination, stock possessing fifty percent (50%) or more of the
total combined voting power of all classes of stock in one of the other
corporations in such chain.

                                    A-3


<PAGE>

                                                                    EXHIBIT 99.4

                                    ADDENDUM
                                       TO
                             STOCK OPTION AGREEMENT


          The following provisions are hereby incorporated into, and are hereby 
made a part of, that certain Stock Option Agreement (the "Option Agreement") by 
and between Rubio's Restaurants, Inc. (the "Corporation") and _________________ 
("Optionee") evidencing the stock option (the "Option") granted this day to 
Optionee under the terms of the Corporation's 1999 Stock Incentive Plan, and 
such provisions are effective immediately. All capitalized terms in this 
Addendum, to the extent not otherwise defined herein, shall have the meanings 
assigned to them in the Option Agreement.

                       INVOLUNTARY TERMINATION FOLLOWING
                    CORPORATE TRANSACTION/CHANGE IN CONTROL

          1.   To the extent the Option is, in connection with a Corporate
Transaction, to be assumed in accordance with Paragraph 6 of the Option
Agreement, the Option shall not accelerate upon the occurrence of that Corporate
Transaction, and the Option shall accordingly continue, over Optionee's period
of Service after the Corporate Transaction, to become exercisable for the Option
Shares in one or more installments in accordance with the provisions of the
Option Agreement.  However, immediately upon an Involuntary Termination of
Optionee's Service within eighteen (18) months following such Corporate
Transaction, the assumed Option, to the extent outstanding at the time but not
otherwise fully exercisable, shall automatically accelerate so that the Option
shall become immediately exercisable for all the Option Shares at the time
subject to the Option and may be exercised for any or all of those Option Shares
as fully vested shares.

          2.   The Option shall not accelerate upon the occurrence of a Change
in Control, and the Option shall, over Optionee's period of Service following
such Change in Control, continue to become exercisable for the Option Shares in
one or more installments in accordance with the provisions of the Option
Agreement.  However, immediately upon an Involuntary Termination of Optionee's
Service within eighteen (18) months following the Change in Control, the Option,
to the extent outstanding at the time but not otherwise fully exercisable, shall
automatically accelerate so that the Option shall become immediately exercisable
for all the Option Shares at the time subject to the Option and may be exercised
for any or all of those Option Shares as fully vested shares.

          3.   The Option as accelerated pursuant to this Addendum shall remain
so exercisable until the EARLIER of (i) the Expiration Date or (ii) the
expiration of the one (1)-year period measured from the date of the Optionee's
Involuntary Termination.

<PAGE>

          4.   For purposes of this Addendum the following definitions shall be 
in effect:

                    (i)  An INVOLUNTARY TERMINATION shall mean the
     termination of Optionee's Service by reason of:

                         (A)  Optionee's involuntary dismissal or discharge
     by the Corporation for reasons other than Misconduct, or

                         (B)  Optionee's voluntary resignation following
     (A) a change in Optionee's position with the Corporation (or Parent or
     Subsidiary employing Optionee) which materially reduces Optionee's
     duties and responsibilities or the level of management to which
     Optionee reports, (B) a reduction in Optionee's level of compensation
     (including base salary, fringe benefits and target bonus under any
     corporate performance based bonus or incentive programs) by more than
     fifteen percent (15%) or (C) a relocation of Optionee's place of
     employment by more than fifty (50) miles, provided and only if such
     change, reduction or relocation is effected by the Corporation without
     Optionee's consent.

                    (ii) A CHANGE IN CONTROL shall be deemed to occur in
     the event of a change in ownership or control of the Corporation
     effected through either of the following transactions:

                         (A)  the acquisition, directly or indirectly, by
     any person or related group of persons (other than the Corporation or
     a person that directly or indirectly controls, is controlled by, or is
     under common control with, the Corporation) of beneficial ownership
     (within the meaning of Rule 13d-3 of the Securities Exchange Act of
     1934, as amended) of securities possessing more than fifty percent
     (50%) of the total combined voting power of the Corporation's
     outstanding securities pursuant to a tender or exchange offer made
     directly to the Corporation's stockholders, or 

                         (B)  a change in the composition of the Board over
     a period of thirty-six (36) consecutive months or less such that a
     majority of the Board members ceases, by reason of one or more
     contested elections for Board membership, to be comprised of
     individuals who either (i) have been Board members continuously since
     the beginning of such period or (ii) have been elected or nominated
     for election as Board members during such period by at least a
     majority of the Board members described in clause (i) who were still
     in office at the time the Board approved such election or nomination.

          5.   The provisions of Paragraph 1 of this Addendum shall govern the
period for which the Option is to remain exercisable following the Involuntary
Termination of Optionee's Service within eighteen (18) months after the
Corporate Transaction or Change in Control and shall supersede any provisions to
the contrary in Paragraph 5 of the Option Agreement.

<PAGE>

          IN WITNESS WHEREOF, Rubio's Restaurants, Inc. has caused this Addendum
to be executed by its duly-authorized officer as of the Effective Date specified
below.


                                       RUBIO'S RESTAURANTS, INC.


                                       By:  ____________________________________

                                       Title:  _________________________________



EFFECTIVE DATE: ____________________

<PAGE>

                                                                    EXHIBIT 99.5

                                    ADDENDUM
                                       TO
                             STOCK OPTION AGREEMENT


          The following provisions are hereby incorporated into, and are hereby 
made a part of, that certain Stock Option Agreement (the "Option Agreement") by 
and between Rubio's Restaurants, Inc. (the "Corporation") and __________________
("Optionee") evidencing the stock option (the "Option") granted this day to 
Optionee under the terms of the Corporation's 1999 Stock Incentive Plan, and 
such provisions are effective immediately. All capitalized terms in this 
Addendum, to the extent not otherwise defined herein, shall have the meanings 
assigned to them in the Option Agreement.

                        LIMITED STOCK APPRECIATION RIGHT

          1.   Optionee is hereby granted a limited stock appreciation right
exercisable upon the following terms and conditions: 

               (a)  Optionee shall have the unconditional right,
     exercisable at any time during the thirty (30)-day period immediately
     following a Hostile Take-Over, to surrender the Option to the
     Corporation.  In return for the surrendered Option, Optionee shall
     receive a cash distribution from the Corporation in an amount equal to
     the excess of (A) the Take-Over Price of the shares of Common Stock
     which are the time subject to the surrendered option (whether or not
     the Option is otherwise at the time exercisable for those shares) over
     (B) the aggregate Exercise Price payable for such shares.

               (b)  To exercise this limited stock appreciation right,
     Optionee must, during the applicable thirty (30)-day exercise period,
     provide the Corporation with written notice of the option surrender in
     which there is specified the number of Option Shares as to which the
     Option is being surrendered.  Such notice must be accompanied by the
     return of Optionee's copy of the Option Agreement, together with any
     written amendments to such Agreement.  The cash distribution shall be
     paid to Optionee within five (5) business days following such delivery
     date.  The exercise of the limited stock appreciation right in
     accordance with the terms of this Addendum is hereby pre-approved by
     the Plan Administrator in advance of such exercise, and no further
     approval of the Plan Administrator or the Board shall be required at
     the time of the actual option surrender and cash distribution.  Upon
     receipt of such cash distribution, the Option shall be cancelled with
     respect to the Option Shares for which the Option has been
     surrendered, and Optionee shall cease to have any further right to
     acquire those Option Shares under the Option Agreement.  The Option
     shall, however, remain outstanding for the balance of the Option
     Shares (if any) in accordance with the terms of the Option Agreement,
     and the Corporation shall issue a replacement stock option agreement
     (substantially in the same form of the surrendered Option Agreement)
     for those remaining Option Shares. 

<PAGE>

               (c)  In no event may this limited stock appreciation right
     be exercised when there is not a positive spread between the Fair
     Market Value of the Option Shares subject to the surrendered option
     and the aggregate Exercise Price payable for such shares.  This
     limited stock appreciation right shall in all events terminate upon
     the expiration or sooner termination of the option term and may not be
     assigned or transferred by Optionee, except to the extent the Option
     is transferable in accordance with the provisions of the Option
     Agreement.

          2.   For purposes of this Addendum, the following definitions shall be
in effect:

               (a)  A HOSTILE TAKE-OVER shall be deemed to occur upon the
     acquisition, directly or indirectly, by any person or related group of
     persons (other than the Corporation or a person that directly or
     indirectly controls, is controlled by, or is under common control
     with, the Corporation) of beneficial ownership (within the meaning of
     Rule 13d-3 of the Securities Exchange Act of 1934, as amended) of
     securities possessing more than fifty percent (50%) of the total
     combined voting power of the Corporation's outstanding securities
     pursuant to a tender or exchange offer made directly to the
     Corporation's stockholders which the Board does not recommend such
     stockholders to accept. 

               (b)  The TAKE-OVER PRICE per share shall be deemed to be
     equal to the GREATER of (A) the Fair Market Value per Option Share on
     the option surrender date or (B) the highest reported price per share
     of Common Stock paid by the tender offeror in effecting the Hostile
     Take-Over.  However, if the surrendered Option is designated as an
     Incentive Option in the Grant Notice, then the Take-Over Price shall
     not exceed the clause (A) price per share.

          IN WITNESS WHEREOF, Rubio's Restaurants, Inc. has caused this Addendum
to be executed by its duly-authorized officer.


                                       RUBIO'S RESTAURANTS, INC.


                                       By:_____________________________________

                                       Title: _________________________________

EFFECTIVE DATE:_____________________

<PAGE>

                                                                    EXHIBIT 99.6
                                       
                           RUBIO'S RESTAURANTS, INC.
                           STOCK ISSUANCE AGREEMENT
                           -------------------------

          
          AGREEMENT made this ___ day of ________________________, by and 
between Rubio's Restaurants, Inc., a Delaware corporation, and 
_____________________, a Participant in the Corporation's 1999 Stock 
Incentive Plan.

          All capitalized terms in this Agreement shall have the meaning 
assigned to them in this Agreement or in the attached Appendix.

     A.   PURCHASE OF SHARES

          1.   PURCHASE.  Participant hereby purchases ________ shares of 
Common Stock (the "Purchased Shares") pursuant to the provisions of the Stock 
Issuance Program at the purchase price of $______ per share (the "Purchase 
Price").

          2.   PAYMENT.  Concurrently with the delivery of this Agreement to 
the Corporation, Participant shall pay the Purchase Price for the Purchased 
Shares in cash or check payable to the Corporation and shall deliver a 
duly-executed blank Assignment Separate from Certificate (in the form 
attached hereto as Exhibit I) with respect to the Purchased Shares.

          3.   STOCKHOLDER RIGHTS.  Until such time as the Corporation 
exercises the Repurchase Right, Participant (or any successor in interest) 
shall have all the rights of a stockholder (including voting, dividend and 
liquidation rights) with respect to the Purchased Shares, subject, however, 
to the transfer restrictions of this Agreement.

          4.   ESCROW.  The Corporation shall have the right to hold the 
Purchased Shares in escrow until those shares have vested in accordance with 
the Vesting Schedule.

          5.   COMPLIANCE WITH LAW.  Under no circumstances shall shares of 
Common Stock or other assets be issued or delivered to Participant pursuant 
to the provisions of this Agreement unless, in the opinion of counsel for the 
Corporation or its successors, there shall have been compliance with all 
applicable requirements of Federal and state securities laws, all applicable 
listing requirements of any stock exchange (or the Nasdaq National Market, if 
applicable) on which the Common Stock is at the time listed for trading and 
all other requirements of law or of any regulatory bodies having jurisdiction 
over such issuance and delivery.

     B.   TRANSFER RESTRICTIONS

          1.   RESTRICTION ON TRANSFER.  Except for any Permitted Transfer, 
Participant shall not transfer, assign, encumber or otherwise dispose of any 
of the Purchased Shares which are subject to the Repurchase Right. 

<PAGE>

          2.   RESTRICTIVE LEGEND.  The stock certificate for the Purchased 
Shares shall be endorsed with the following restrictive legend:

          "The shares represented by this certificate are unvested and 
     subject to certain repurchase rights granted to the Corporation and 
     accordingly may not be sold, assigned, transferred, encumbered, or in 
     any manner disposed of except in conformity with the terms of a written 
     agreement dated ____________, ______ between the Corporation and the 
     registered holder of the shares (or the predecessor in interest to the 
     shares).  A copy of such agreement is maintained at the Corporation's 
     principal corporate offices."

          3.   TRANSFEREE OBLIGATIONS.  Each person (other than the 
Corporation) to whom the Purchased Shares are transferred by means of a 
Permitted Transfer must, as a condition precedent to the validity of such 
transfer, acknowledge in writing to the Corporation that such person is bound 
by the provisions of this Agreement and that the transferred shares are 
subject to the Repurchase Right to the same extent such shares would be so 
subject if retained by Participant.

     C.   REPURCHASE RIGHT

          1.   GRANT.  The Corporation is hereby granted the right (the 
"Repurchase Right"), exercisable at any time during the ninety (90)-day 
period following the date Participant ceases for any reason to remain in 
Service, to repurchase at the Purchase Price all or any portion of the 
Purchased Shares in which Participant is not, at the time of his or her 
cessation of Service, vested in accordance with the Vesting Schedule set 
forth in Paragraph C.3 of this Agreement or the special vesting acceleration 
provisions of Paragraph C.5 of this Agreement (such shares to be hereinafter 
referred to as the "Unvested Shares").

          2.   EXERCISE OF THE REPURCHASE RIGHT.  The Repurchase Right shall 
be exercisable by written notice delivered to each Owner of the Unvested 
Shares prior to the expiration of the ninety (90)-day exercise period.  The 
notice shall indicate the number of Unvested Shares to be repurchased and the 
date on which the repurchase is to be effected, such date to be not more than 
thirty (30) days after the date of such notice.  The certificates 
representing the Unvested Shares to be repurchased shall be delivered to the 
Corporation on or before the close of business on the date specified for the 
repurchase. Concurrently with the receipt of such stock certificates, the 
Corporation shall pay to Owner, in cash or cash equivalent (including the 
cancellation of any purchase-money indebtedness), an amount equal to the 
Purchase Price previously paid for the Unvested Shares to be repurchased from 
Owner.

          3.   TERMINATION OF THE REPURCHASE RIGHT.  The Repurchase Right 
shall terminate with respect to any Unvested Shares for which it is not 
timely exercised under Paragraph C.2.  In addition, the Repurchase Right 
shall terminate and cease to be exercisable with respect to any and all 
Purchased Shares in which Participant vests in accordance with the following 
Vesting Schedule:

                                       2
<PAGE>

                    (i)  Upon Participant's completion of one (1) year of 
     Service measured from ______________, _______, Participant shall acquire 
     a vested interest in, and the Repurchase Right shall lapse with respect 
     to, twenty-five percent (25%) of the Purchased Shares.

                    (ii) Participant shall acquire a vested interest in, and 
     the Repurchase Right shall lapse with respect to, the remaining 
     Purchased Shares in a series of thirty six (36) successive equal monthly 
     installments upon Participant's completion of each additional month of 
     Service over the thirty-six (36)-month period measured from the initial 
     vesting date under subparagraph (i) above.

          4.   RECAPITALIZATION.  Any new, substituted or additional 
securities or other property (including cash paid other than as a regular 
cash dividend) which is by reason of any Recapitalization distributed with 
respect to the Purchased Shares shall be immediately subject to the 
Repurchase Right and any escrow requirements hereunder, but only to the 
extent the Purchased Shares are at the time covered by such right or escrow 
requirements.  Appropriate adjustments to reflect such distribution shall be 
made to the number and/or class of securities subject to this Agreement and 
to the price per share to be paid upon the exercise of the Repurchase Right 
in order to reflect the effect of any such Recapitalization upon the 
Corporation's capital structure; PROVIDED, however, that the aggregate 
purchase price shall remain the same.

          5.   CORPORATE TRANSACTION.

               (a)  Immediately prior to the consummation of any Corporate 
Transaction, the Repurchase Right shall automatically lapse in its entirety 
and the Purchased Shares shall vest in full, except to the extent the 
Repurchase Right is to be assigned to the successor corporation (or parent 
thereof) in connection with the Corporate Transaction.

               (b)  To the extent the Repurchase Right remains in effect 
following a Corporate Transaction, such right shall apply to the new capital 
stock or other property (including any cash payments) received in exchange 
for the Purchased Shares in consummation of the Corporate Transaction, but 
only to the extent the Purchased Shares are at the time covered by such 
right. Appropriate adjustments shall be made to the price per share payable 
upon exercise of the Repurchase Right to reflect the effect of the Corporate 
Transaction upon the Corporation's capital structure; PROVIDED, however, that 
the aggregate purchase price shall remain the same.  The new securities or 
other property (including cash payments) issued or distributed with respect 
to the Purchased Shares in consummation of the Corporate Transaction shall 
immediately be deposited in escrow with the Corporation (or the successor 
entity) and shall not be released from escrow until Participant vests in such 
securities or other property in accordance with the same Vesting Schedule in 
effect for the Purchased Shares.

                                       3
<PAGE>

          D.   SPECIAL TAX ELECTION

          1.   SECTION 83(b) ELECTION.  Under Code Section 83, the excess of 
the fair market value of the Purchased Shares on the date any forfeiture 
restrictions applicable to such shares lapse over the Purchase Price paid for 
such shares will be reportable as ordinary income on the lapse date.  For 
this purpose, the term "forfeiture restrictions" includes the right of the 
Corporation to repurchase the Purchased Shares pursuant to the Repurchase 
Right. Participant may elect under Code Section 83(b) to be taxed at the time 
the Purchased Shares are acquired, rather than when and as such Purchased 
Shares cease to be subject to such forfeiture restrictions.  Such election 
must be filed with the Internal Revenue Service within thirty (30) days after 
the date of this Agreement.  Even if the fair market value of the Purchased 
Shares on the date of this Agreement equals the Purchase Price paid (and thus 
no tax is payable), the election must be made to avoid adverse tax 
consequences in the future.  THE FORM FOR MAKING THIS ELECTION IS ATTACHED AS 
EXHIBIT II HERETO. PARTICIPANT UNDERSTANDS THAT FAILURE TO MAKE THIS FILING 
WITHIN THE APPLICABLE THIRTY (30)-DAY PERIOD WILL RESULT IN THE RECOGNITION 
OF ORDINARY INCOME AS THE FORFEITURE RESTRICTIONS LAPSE.

          2.   FILING RESPONSIBILITY.  PARTICIPANT ACKNOWLEDGES THAT IT IS 
PARTICIPANT'S SOLE RESPONSIBILITY, AND NOT THE CORPORATION'S, TO FILE A 
TIMELY ELECTION UNDER CODE SECTION 83(b), EVEN IF PARTICIPANT REQUESTS THE 
CORPORATION OR ITS REPRESENTATIVES TO MAKE THIS FILING ON HIS OR HER BEHALF.

     E.   GENERAL PROVISIONS

          1.   ASSIGNMENT.  The Corporation may assign the Repurchase Right 
to any person or entity selected by the Board, including (without limitation) 
one or more stockholders of the Corporation.

          2.   AT WILL EMPLOYMENT.  Nothing in this Agreement or in the Plan 
shall confer upon Participant any right to continue in Service for any period 
of specific duration or interfere with or otherwise restrict in any way the 
rights of the Corporation (or any Parent or Subsidiary employing or retaining 
Participant) or of Participant, which rights are hereby expressly reserved by 
each, to terminate Participant's Service at any time for any reason, with or 
without cause.

          3.   NOTICES.  Any notice required to be given under this Agreement 
shall be in writing and shall be deemed effective upon personal delivery or 
upon deposit in the U.S. mail, registered or certified, postage prepaid and 
properly addressed to the party entitled to such notice at the address 
indicated below such party's signature line on this Agreement or at such 
other address as such party may designate by ten (10) days advance written 
notice under this paragraph to all other parties to this Agreement.

                                       4
<PAGE>

          4.   NO WAIVER.  The failure of the Corporation in any instance to 
exercise the Repurchase Right shall not constitute a waiver of any other 
repurchase rights that may subsequently arise under the provisions of this 
Agreement or any other agreement between the Corporation and Participant.  No 
waiver of any breach or condition of this Agreement shall be deemed to be a 
waiver of any other or subsequent breach or condition, whether of like or 
different nature.

          5.   CANCELLATION OF SHARES.  If the Corporation shall make 
available, at the time and place and in the amount and form provided in this 
Agreement, the consideration for the Purchased Shares to be repurchased in 
accordance with the provisions of this Agreement, then from and after such 
time, the person from whom such shares are to be repurchased shall no longer 
have any rights as a holder of such shares (other than the right to receive 
payment of such consideration in accordance with this Agreement).  Such 
shares shall be deemed purchased in accordance with the applicable provisions 
hereof, and the Corporation shall be deemed the owner and holder of such 
shares, whether or not the certificates therefor have been delivered as 
required by this Agreement.

          6.   PARTICIPANT UNDERTAKING.  Participant hereby agrees to take 
whatever additional action and execute whatever additional documents the 
Corporation may deem necessary or advisable in order to carry out or effect 
one or more of the obligations or restrictions imposed on either Participant 
or the Purchased Shares pursuant to the provisions of this Agreement.

          7.   AGREEMENT IS ENTIRE CONTRACT.  This Agreement constitutes the 
entire contract between the parties hereto with regard to the subject matter 
hereof.  This Agreement is made pursuant to the provisions of the Plan and 
shall in all respects be construed in conformity with the terms of the Plan.

          8.   GOVERNING LAW.  This Agreement shall be governed by, and 
construed in accordance with, the laws of the State of California without 
resort to that State's conflict-of-laws rules.

          9.   COUNTERPARTS.  This Agreement may be executed in counterparts, 
each of which shall be deemed to be an original, but all of which together 
shall constitute one and the same instrument.

          10.  SUCCESSORS AND ASSIGNS.  The provisions of this Agreement 
shall inure to the benefit of, and be binding upon, the Corporation and its 
successors and assigns and upon Participant, Participant's assigns and the 
legal representatives, heirs and legatees of Participant's estate, whether or 
not any such person shall have become a party to this Agreement and have 
agreed in writing to join herein and be bound by the terms hereof.

                                       5
<PAGE>

          IN WITNESS WHEREOF, the parties have executed this Agreement on the 
day and year first indicated above.
                                       
                                       RUBIO'S RESTAURANTS, INC.
     
     
                                       By:______________________________________
     
                                       Title:___________________________________
     
                                       Address:_________________________________
     
                                       _________________________________________
     
     
                                       PARTICIPANT
     
     
                                       _________________________________________
                                       Signature
     
     
                                       Address:_________________________________
     
                                       _________________________________________
     
     
                                       6
<PAGE>
                                       
                             SPOUSAL ACKNOWLEDGMENT
                                          
          The undersigned spouse of the Participant has read and hereby 
approves the foregoing Stock Issuance Agreement.  In consideration of the 
Corporation's granting the Participant the right to acquire the Purchased 
Shares in accordance with the terms of such Agreement, the undersigned hereby 
agrees to be irrevocably bound by all the terms of such Agreement, including 
(without limitation) the right of the Corporation (or its assigns) to 
purchase any Purchased Shares in which the Participant is not vested at the 
time of his or her termination of Service.

                                       
                                       _________________________________________
                                       PARTICIPANT'S SPOUSE
     
                                       Address:_________________________________
     
                                       _________________________________________
     


<PAGE>
                                       

                                   EXHIBIT I
                     ASSIGNMENT SEPARATE FROM CERTIFICATE



          FOR VALUE RECEIVED ____________ hereby sell(s), assign(s) and 
transfer(s) unto Rubio's Restaurants, Inc. (the "Corporation"), 
____________________ _____________ (____________) shares of the Common Stock 
of the Corporation standing in his or her name on the books of the 
Corporation represented by Certificate No. __________ herewith and do(es) 
hereby irrevocably constitute and appoint __________________________________ 
Attorney to transfer the said stock on the books of the Corporation with full 
power of substitution in the premises.

Dated:  _________________, _____.



                                       
                                       Signature ______________________________












INSTRUCTION:  Please do not fill in any blanks other than the signature line. 
Please sign exactly as you would like your name to appear on the issued stock 
certificate.  The purpose of this assignment is to enable the Corporation to 
exercise the Repurchase Right without requiring additional signatures on the 
part of Participant.

<PAGE>

                                       
                                   EXHIBIT II
                                          
                           SECTION 83(b) TAX ELECTION
                                          
This statement is being made under Section 83(b) of the Internal Revenue 
Code, pursuant to Treas. Reg. Section 1.83-2.

(1)  The taxpayer who performed the services is:

     Name:
     Address:
     Taxpayer Ident. No.:

(2)  The property with respect to which the election is being made is 
     ______ shares of the common stock of Rubio's Restaurants, Inc.

(3)  The property was issued on _________________, _________.

(4)  The taxable year in which the election is being made is the calendar 
     year _________.

(5)  The property is subject to a repurchase right pursuant to which the 
     issuer has the right to acquire the property at the original purchase 
     price if for any reason taxpayer's service with the issuer terminates.  
     The issuer's repurchase right lapses in a series of annual and monthly 
     installments over a four (4)-year period ending on ______________.

(6)  The fair market value at the time of transfer (determined without regard 
     to any restriction other than a restriction which by its terms will 
     never lapse) is $__________ per share.

(7)  The amount paid for such property is $__________ per share.

(8)  A copy of this statement was furnished to Rubio's Restaurants, Inc. for 
     whom taxpayer rendered the services underlying the transfer of property.

(9)  This statement is executed on __________________, _______.



_______________________________________________________________________________
Spouse (if any)                    Taxpayer

     THIS ELECTION MUST BE FILED WITH THE INTERNAL REVENUE SERVICE CENTER 
WITH WHICH TAXPAYER FILES HIS OR HER FEDERAL INCOME TAX RETURNS AND MUST BE 
MADE WITHIN THIRTY (30) DAYS AFTER THE EXECUTION DATE OF THE STOCK ISSUANCE 
AGREEMENT.  THIS FILING SHOULD BE MADE BY REGISTERED OR CERTIFIED MAIL, 
RETURN RECEIPT REQUESTED.  PARTICIPANT MUST RETAIN TWO (2) COPIES OF THE 
COMPLETED FORM FOR FILING WITH HIS OR HER FEDERAL AND STATE TAX RETURNS FOR 
THE CURRENT TAX YEAR AND AN ADDITIONAL COPY FOR HIS OR HER RECORDS.

<PAGE>
                                       
                                   APPENDIX


          
          The following definitions shall be in effect under the Agreement:

          A.   AGREEMENT shall mean this Stock Issuance Agreement.

          B.   BOARD shall mean the Corporation's Board of Directors.

          C.   COMMON STOCK shall mean shares of the Corporation's common stock.

          D.   CODE shall mean the Internal Revenue Code of 1986, as amended.

          E.   CORPORATE TRANSACTION shall mean either of the following 
stockholder-approved transactions:

                    (i)  a merger or consolidation in which securities 
     possessing more than fifty percent (50%) of the total combined voting 
     power of the Corporation's outstanding securities are transferred to a 
     person or persons different from the persons holding those securities 
     immediately prior to such transaction, or

                    (ii) the sale, transfer or other disposition of all or 
     substantially all of the Corporation's assets in complete liquidation or 
     dissolution of the Corporation.

          F.   CORPORATION shall mean Rubio's Restaurants, Inc., a Delaware 
corporation, and any successor corporation to all or substantially all of the 
assets or voting stock of Rubio's Restaurants, Inc.  

          G.   OWNER shall mean Participant and all subsequent holders of the 
Purchased Shares who derive their chain of ownership through a Permitted 
Transfer from Participant.

          H.   PARENT shall mean any corporation (other than the Corporation) 
in an unbroken chain of corporations ending with the Corporation, provided 
each corporation in the unbroken chain (other than the Corporation) owns, at 
the time of the determination, stock possessing fifty percent (50%) or more 
of the total combined voting power of all classes of stock in one of the 
other corporations in such chain.

          I.   PARTICIPANT shall mean the person to whom the Purchased Shares 
are issued under the Stock Issuance Program.

                                      A-1
<PAGE>

          J.   PERMITTED TRANSFER shall mean (i) a gratuitous transfer of the 
Purchased Shares, PROVIDED AND ONLY IF Participant obtains the Corporation's 
prior written consent to such transfer, (ii) a transfer of title to the 
Purchased Shares effected pursuant to Participant's will or the laws of 
intestate succession following Participant's death or (iii) a transfer to the 
Corporation in pledge as security for any purchase-money indebtedness 
incurred by Participant in connection with the acquisition of the Purchased 
Shares.

          K.   PLAN shall mean the Corporation's 1999 Stock Incentive Plan.

          L.   PLAN ADMINISTRATOR shall mean either the Board or a committee 
of the Board acting in its administrative capacity under the Plan. 

          M.   PURCHASE PRICE shall have the meaning assigned to such term in 
Paragraph A.1.

          N.   PURCHASED SHARES shall have the meaning assigned to such term 
in Paragraph A.1.

          O.   RECAPITALIZATION shall mean any stock split, stock dividend, 
recapitalization, combination of shares, exchange of shares or other change 
affecting the Corporation's outstanding Common Stock as a class without the 
Corporation's receipt of consideration.

          P.   REPURCHASE RIGHT shall mean the right granted to the 
Corporation in accordance with Article C.

          Q.   SERVICE shall mean the Participant's performance of services 
for the Corporation (or any Parent or Subsidiary) in the capacity of an 
employee, subject to the control and direction of the employer entity as to 
both the work to be performed and the manner and method of performance, a 
non-employee member of the board of directors or a consultant.

          R.   STOCK ISSUANCE PROGRAM shall mean the Stock Issuance Program 
under the Plan.

          S.   SUBSIDIARY shall mean any corporation (other than the 
Corporation) in an unbroken chain of corporations beginning with the 
Corporation, provided each corporation (other than the last corporation) in 
the unbroken chain owns, at the time of the determination, stock possessing 
fifty percent (50%) or more of the total combined voting power of all classes 
of stock in one of the other corporations in such chain.

          T.   VESTING SCHEDULE shall mean the vesting schedule specified in 
Paragraph C.3, pursuant to which the Purchased Shares are to vest in a series 
of installments over Participant's period of Service. 

                                     A-2
<PAGE>

          U.   UNVESTED SHARES shall have the meaning assigned to such term 
in Paragraph C.1.

                                     A-3


<PAGE>


                                                                    EXHIBIT 99.7

                                      ADDENDUM
                                         TO
                              STOCK ISSUANCE AGREEMENT
                                          
          The following provisions are hereby incorporated into, and are 
hereby made a part of, that certain Stock Issuance Agreement (the "Issuance 
Agreement") by and between Rubio's Restaurants, Inc. (the "Corporation") and  
___________________ ("Participant") evidencing the stock issuance made this 
day to Participant under the terms of the Corporation's 1999 Stock Incentive 
Plan, and such provisions are effective immediately. All capitalized terms in 
this Addendum, to the extent not otherwise defined herein, shall have the 
meanings assigned to such terms in the Issuance Agreement.

                         INVOLUNTARY TERMINATION FOLLOWING
                      CORPORATE TRANSACTION/CHANGE IN CONTROL
                                          
          1.   To the extent the Repurchase Right is assigned to the 
successor corporation (or parent thereof) in connection with a Corporate 
Transaction, no accelerated vesting of the Purchased Shares shall occur upon 
such Corporate Transaction, and the Repurchase Right shall continue to remain 
in full force and effect in accordance with the provisions of the Issuance 
Agreement.  The Participant shall, over Participant's period of Service 
following the Corporate Transaction, continue to vest in the Purchased Shares 
in one or more installments in accordance with the provisions of the Issuance 
Agreement.

          2.   No accelerated vesting of the Purchased Shares shall occur 
upon a Change in Control, and the Repurchase Right shall continue to remain 
in full force and effect in accordance with the provisions of the Issuance 
Agreement. The Participant shall, over Participant's period of Service 
following the Change in Control, continue to vest in the Purchased Shares in 
one or more installments in accordance with the provisions of the Issuance 
Agreement.

          3.   Immediately upon an Involuntary Termination of Participant's 
Service within eighteen (18) months following the Corporate Transaction or 
Change in Control, the Repurchase Right shall terminate automatically, and 
all the Purchased Shares shall vest in full at that time.

          4.   For purposes of this Addendum, the following definitions shall 
be in effect:

               An INVOLUNTARY TERMINATION shall mean the termination of 
Participant's Service by reason of:

                    (i)    Participant's involuntary dismissal or discharge
     by the Corporation for reasons other than Misconduct, or

                                      
<PAGE>

                    (ii)   Participant's voluntary resignation following
          (A) a change in Participant's position with the Corporation (or
          Parent or Subsidiary employing Participant) which materially
          reduces Participant's duties and responsibilities or the level of
          management to which Participant reports, (B) a reduction in
          Participant's level of compensation (including base salary,
          fringe benefits and target bonus under any corporate performance
          based bonus or incentive programs) by more than fifteen percent
          (15%) or (C) a relocation of Participant's place of employment by
          more than fifty (50) miles, provided and only if such change,
          reduction or relocation is effected by the Corporation without
          Participant's consent.

               A CHANGE IN CONTROL shall be deemed to occur in the event of a 
change in ownership or control of the Corporation effected through either of 
the following transactions:

                    (i)    the acquisition, directly or indirectly, by any
     person or related group of persons (other than the Corporation or a
     person that directly or indirectly controls, is controlled by, or is
     under common control with, the Corporation) of beneficial ownership
     (within the meaning of Rule 13d-3 of the Securities Exchange Act of
     1934, as amended) of securities possessing more than fifty percent
     (50%) of the total combined voting power of the Corporation's
     outstanding securities pursuant to a tender or exchange offer made
     directly to the Corporation's stockholders, or

                    (ii)   a change in the composition of the Board over a
     period of thirty-six (36) consecutive months or less such that a
     majority of the Board members ceases, by reason of one or more
     contested elections for Board membership, to be comprised of
     individuals who either (A) have been Board members continuously since
     the beginning of such period or (B) have been elected or nominated for
     election as Board members during such period by at least a majority of
     the Board members described in clause (A) who were still in office at
     the time the Board approved such election or nomination.

          MISCONDUCT shall mean the commission of any act of fraud, 
embezzlement or dishonesty by the Participant, any unauthorized use or 
disclosure by the Participant of confidential information or trade secrets of 
the Corporation (or any Parent or Subsidiary), or any other intentional 
misconduct by the Participant adversely affecting the business or affairs of 
the Corporation (or any Parent or Subsidiary) in a material manner.  The 
foregoing definition shall not be deemed to be inclusive of all the acts or 
omissions which the Corporation (or any Parent or Subsidiary) may consider as 
grounds for the dismissal or discharge of the Participant or other person in 
the Service of the Corporation (or any Parent or Subsidiary).

                                      
<PAGE>

          IN WITNESS WHEREOF, SoftNet Systems, Inc. has caused this Addendum to
be executed by its duly-authorized officer, effective as of the Effective Date
specified below.


                              RUBIO'S RESTAURANTS, INC.

                              By:_______________________________________  

                              Title: _____________________________________ 


EFFECTIVE DATE:_____________________________________ 




<PAGE>

                                                                   EXHIBIT 99.9

                            RUBIO'S RESTAURANTS, INC.
                   1999 EMPLOYEE STOCK PURCHASE PLAN ("ESPP")
                             ENROLLMENT/CHANGE FORM

<TABLE>
<S><C>
- ------------------
   SECTION 1:
- ------------------    ACTION                                                   COMPLETE SECTIONS:
                         / / New Enrollment                                    2, 3, 7 AND sign attached Stock Purchase
ACTIONS                  / / Payroll Deduction Change                          Agreement
                         / / Terminate Payroll Deductions                      2, 4, 7
                         / / Leave of Absence                                  2, 5, 7
                                                                               2, 6, 7
- -----------------------------------------------------------------------------------------------------------------------------
- -----------------------------------------------------------------------------------------------------------------------------
   SECTION 2:                                                                                                               
- ------------------    Name                                                                                                  
                            ---------------------------------- ------------------------- -------- ------------------------
                                            Last                          First              MI              Dept.
PERSONNEL DATA
                      Home Address                                                                        
                                      --------------------------------------------------------------------
                                                                    Street
                                      ------------------------------ -------------------- ----------------
                                                  City                      State            Zip Code
                                       --- --- ----     ---- ---     ---- --- ---- ---
                      Social                        -            -                                                          
                      Security #
                                       --- --- ----     ---- ---     ---- --- ---- ---

- -----------------------------------------------------------------------------------------------------------------------------
- -----------------------------------------------------------------------------------------------------------------------------
   SECTION 3:         Effective with the Purchase                         Payroll Deduction Amount:  _________ % of cash
- ------------------    Interval Beginning:                                 earnings*

NEW ENROLLMENT        / /    First Business Day of February, _______
                                                                          *  Must be a multiple of 1% up to a maximum of
                      / /    First Business Day of August, _________      10% of cash earnings

                      / /    Initial Offering Period

- -----------------------------------------------------------------------------------------------------------------------------
- -----------------------------------------------------------------------------------------------------------------------------
   SECTION 4:         Effective with the                                      I authorize the following new level of
- ------------------    Pay Period                                              payroll deduction: ______________% of cash
                      Beginning:                                              earnings*
                                      ----------------------------------
                                             Month, Day and Year
PAYROLL DEDUCTION
CHANGE
                                                                              * Must be a multiple of 1% up to a maximum
                                                                              of 10% of cash earnings
                      NOTE:     You may reduce your rate of payroll deductions
                                once per 6-month purchase interval to become
                                effective as soon as possible following the
                                filing of the change form. You may also increase
                                your rate of payroll deductions to become
                                effective as of the start date of the next
                                6-month interval (first business day of February
                                or August).

- -----------------------------------------------------------------------------------------------------------------------------
- -----------------------------------------------------------------------------------------------------------------------------
   SECTION 5:         Effective with the                                      Your election to terminate your payroll
- ------------------    Pay Period                                              deductions for the balance of the offering
                      Beginning:                                              period cannot be changed, and you may not
                                 -------------------------------------------- rejoin the offering  period at a later date.
                                           Month, Day and Year                You will not be able to resume participation
                                                                              in the ESPP until the start of the next
                                                                              offering period.
TERMINATE PAYROLL
DEDUCTIONS
                      In connection with my voluntary termination of payroll
                      deductions, I elect the following action regarding my ESPP
                      payroll deductions to date in the current purchase
                      interval:

                      / /  Purchase shares of Rubio's Restaurants, Inc. at the end of the purchase interval

                                                       OR

                      / /  Refund ESPP payroll deductions collected

                      NOTE:     If your employment terminates for any reason or
                                your eligibility status changes (< 20 hrs/week or
                                < 5 months/year), you will immediately cease to
                                participate in the ESPP, and your ESPP payroll
                                deductions collected in that purchase interval
                                will automatically be refunded to you.

- -----------------------------------------------------------------------------------------------------------------------------
- -----------------------------------------------------------------------------------------------------------------------------
   SECTION 6:         In connection with my leave of absence, I elect the
- ------------------    following action with respect to my ESPP payroll
                      deductions to date in the current purchase interval:


                        / / Purchase shares of Rubio's Restaurants, Inc. at the end of the purchase interval
LEAVE OF ABSENCE
                                         OR

                        / / Refund ESPP payroll deductions collected

                          NOTE:     If you take an unpaid leave of absence, your
                                    payroll deductions will immediately cease.
                                    If you return to active status within 90
                                    days after the start of your leave, your
                                    payroll deductions will at that time
                                    automatically resume at the rate in effect
                                    for you when your leave began.

- -----------------------------------------------------------------------------------------------------------------------------
- -----------------------------------------------------------------------------------------------------------------------------
   SECTION 7:
- ------------------

AUTHORIZATION    I hereby authorize the specific action or actions indicated above.


- ------------------------------------------------------                   ---------------------------------------------------
                        Date                                                           Signature of Employee
</TABLE>

<PAGE>

                                                                  EXHIBIT 99.10


                            RUBIO'S RESTAURANTS, INC.
                            STOCK PURCHASE AGREEMENT

                  I hereby elect to participate in the 1999 Employee Stock
Purchase Plan (the "ESPP") for the offering period specified below, and I hereby
subscribe to purchase shares of Common Stock of Rubio's Restaurants, Inc. (the
"Corporation") in accordance with the provisions of this Agreement and the ESPP.
I hereby authorize payroll deductions from each of my paychecks following my
entry into the ESPP in the 1% multiple of my cash compensation (not to exceed a
maximum of 10%) specified in my attached Enrollment Form.

                   The offering period is divided into a series of consecutive
purchase intervals. With the exception of the initial purchase interval which
will begin at the time of the initial public offering of the Common Stock and
end on January 31, 2000, those purchase intervals will each be of six months
duration and will run from the first business day of February to last business
day of July each year and from the first business day of August each year to the
last business day of January in the following year. My participation will
automatically remain in effect from one purchase interval to the next in
accordance with my payroll deduction authorization, unless I withdraw from the
ESPP or change the rate of my payroll deduction or unless my employment status
changes. I may reduce the rate of my payroll deductions on one occasion per
purchase interval, and I may increase my rate of payroll deductions to become
effective at the beginning of any subsequent purchase interval.

                  My payroll deductions will be accumulated for the purchase of
shares of Common Stock on the last business day of each purchase interval within
the offering period. The purchase price per share will be equal to 85% of the
LOWER of (i) the fair market value per share of Common Stock on my Entry Date
into the offering period or (ii) the fair market value per share on the purchase
date. I will also be subject to ESPP restrictions (i) limiting the maximum
number of shares which I may purchase per purchase interval, (ii) limiting the
maximum number of shares which may be purchased in total by all participants per
purchase interval and (iii) prohibiting me from purchasing more than $25,000
worth of Common Stock for each calendar year my purchase right remains
outstanding.

                  I may withdraw from the ESPP at any time prior to the last
business day of the purchase interval and elect either to have the Corporation
refund all my payroll deductions for that interval or to have such payroll
deductions applied to the purchase of Common Stock at the end of such interval.
However, I may not rejoin that particular offering period at any later date.
Upon the termination of my employment for any reason, including death or
disability, or my loss of eligible employee status, my participation in the ESPP
will immediately cease, and all my payroll deductions for the purchase interval
in which my employment terminates or my loss of eligibility occurs will
immediately be refunded.

                  If I take an unpaid leave of absence, my payroll deductions
will immediately cease, and any payroll deductions for the purchase interval in
which my leave begins will, at my election, either be refunded or applied to the
purchase of shares of Common Stock at the end of that purchase interval. If my
re-employment is guaranteed by either law or contract, or if I return to active
service within ninety (90) days, then upon my return my payroll deductions will
automatically resume at the rate in effect when my leave began.

                  The Corporation will issue a stock certificate for the shares
purchased on my behalf after the end of each purchase interval. The certificate
will be issued in street name and will be deposited directly in my
Corporation-designated brokerage account. HOWEVER, I HEREBY AGREE TO HOLD ALL
SHARES WHICH I PURCHASE UNDER THE ESPP FOR AT LEAST ONE YEAR FROM THE APPLICABLE
PURCHASE DATE OF THOSE SHARES, AND I WILL NOT SELL OR OTHERWISE TRANSFER THOSE
SHARES BEFORE THE ONE-YEAR HOLDING PERIOD IS MET. In addition, I will notify the
Corporation of any disposition of shares purchased under the ESPP, and I will
satisfy all applicable income and employment tax withholding requirements at the
time of such disposition.

                  The Corporation has the right, exercisable in its sole
discretion, to amend or terminate all outstanding purchase rights under the ESPP
at any time, with such amendment or termination to become effective immediately
following the end of any purchase interval. However, such purchase rights may be
amended or terminated with an immediate effective date to the extent necessary
to avoid the Corporation's recognition of compensation expense for financial
reporting purposes, should the accounting principles applicable to the ESPP
change. Upon any such termination, I will cease to have any further rights to
purchase shares of common stock under this Agreement.

                  I have read this Agreement and hereby agree to be bound by the
terms of both this Agreement and the ESPP. The effectiveness of this Agreement
is dependent upon my eligibility to participate in the ESPP.

Date: __________________                               

                                    Signature of Employee _____________________

                                    Printed Name: _____________________________

Offering Period:  Initial Offering Period ending July 31, 2001

Entry Date: __________________




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