Document:

<PAGE>

                                                                     EXHIBIT 4.3

OPTION NO.:

OPTIONEE:

DATE OF GRANT:             October 26, 1999

OPTION PRICE:              $8.00

COVERED SHARES:

                           MAXIM PHARMACEUTICALS, INC.

                                      * * *

                       NONSTATUTORY STOCK OPTION AGREEMENT

         1. DEFINITIONS. In this Agreement, except where the context otherwise
indicates, the following definitions apply:

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

                  (b) "Agreement" means this Nonstatutory Stock Option
Agreement.

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

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

                  (e) "Committee" means the committee charged with the
administration of the stock option grants. Unless otherwise determined by the
Board, the Compensation Committee of the Board shall be the Committee.

                  (f) "Common Stock" means the common stock, par value $.001 per
share, of the Company.

                  (g) "Company" means Maxim Pharmaceuticals, Inc.

                  (h) "Continuous Status as an Employee, Director or Consultant"
means that the service of an individual to the Company, whether as an Employee,
Director or

                                       1.

<PAGE>

Consultant, is not interrupted or terminated. The Board, or the chief executive
officer of the Company may determine, in that party's sole discretion, whether
Continuous Status as an Employee, Director or Consultant shall be considered
interrupted in the case of: (i) any leave of absence approved by the Board or
the chief executive officer of the Company, including sick leave, military
leave, or any other personal leave; or (ii) transfers between the Company,
Affiliates or their successors.

                  (i) "Consultant" means any person, including an advisor,
engaged by the Company or an Affiliate to render consulting services and who is
compensated for such services, provided that the term "Consultant" shall not
include Directors who are paid only a director's fee by the Company or who are
not compensated by the Company for their services as Directors.

                  (j) "Covered Shares" means the Shares subject to the Option
set forth as the "Covered Shares" on page 1 of this Agreement.

                  (k) "Date of Exercise" means the date on which the Company
receives notice pursuant to Paragraph 5(a) of the exercise, in whole or in part,
of the Option.

                  (l) "Date of Expiration" means the date on which the Option
shall expire, which shall be seven years after the Date of Grant.

                  (m) "Date of Grant" means the date set forth as the "Date of
Grant" on page 1 of this Agreement.

                  (n) "Disability" means permanent and total disability within
the meaning of Section 422(c)(6) of the Code.

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

                  (p) "Fair Market Value" of a Share means the amount equal to
the closing sales price for a Share in the principal trading market for the
Shares as reported by such source as the Committee may select, or, if such price
quotations are not then reported, then the fair market value of a Share as
determined by the Committee pursuant to a reasonable method adopted in good
faith for such purpose.

                  (q) "Option" means the nonstatutory stock option granted to
the Optionee in Paragraph 2 of this Agreement.

                                       2.

<PAGE>

                  (r) "Option Price" means the dollar amount per Share set forth
as the "Option Price" on page 1 of this Agreement.

                  (s) "Optionee" means the person identified as the "Optionee"
on page 1 of this Agreement.

                   (t) "Share" means a share of Common Stock.

         2. GRANT OF OPTION. Subject to the terms of this Agreement, the Company
hereby grants to the Optionee or his successors the Option to purchase from the
Company that number of shares of Common Stock equal to the Covered Shares,
exercisable at the Option Price

         3. TERMS OF THE OPTION.

                  (a) TYPE OF OPTION. The Option is intended to be a
nonstatutory stock option, and is not an incentive stock option within the
meaning of Section 422 of the Code.

                  (b) OPTION PERIOD. During the period commencing on the Date of
the Grant and terminating on the Date of Expiration, the Option may be exercised
with respect to all or a portion of the Covered Shares (in full shares) to the
extent that the Option has not been previously exercised with respect to such
Covered Shares subject to the following limitations:

                  [Insert Vesting Schedule]

                  Notwithstanding the above provisions of the Paragraph 3(b),
the Option may be exercised in full at any time during the period commencing on
the Date of Grant and terminating on the Date of Expiration if (i) there is a
Change of Control, (ii) the Optionee's employment with the Company or a
subsidiary terminates due to the Optionee's retirement, death or disability, or
(iii) the Optionee's employment with the Company or a Subsidiary is terminated
by the Company without Cause or by the Optionee due to a Constructive Discharge.

                   (c) NONTRANSFERABILITY. The Option is not transferable by the
Optionee other than by will or the laws of descent and distribution and is
exercisable during the

                                       3.

<PAGE>

Optionee's lifetime only by the Optionee or, in the event of the Optionee's
Disability or death, by the Optionee's legal representative.

                  (d) PAYMENT OF OPTION PRICE. Payment of the Option Price is
due in full upon exercise, in whole or in part, of the Option. The Optionee may
elect, to the extent permitted by applicable statutes and regulations, to make
payment of the Option Price under one of the following alternatives:

                           (i) Payment of the Option Price in cash (including
check) at the time of exercise;

                           (ii) Payment pursuant to a program developed under
Regulation T as promulgated by the Federal Reserve Board which, prior to the
issuance of Common Stock, results in either the receipt of cash (or check) by
the Company or the receipt of irrevocable instructions to pay the aggregate
Option Price to the Company from the sales proceeds;

                           (iii) Provided that at the time of exercise the
Company's Common Stock is publicly traded and quoted regularly in THE WALL
STREET JOURNAL, payment by delivery of already-owned shares of Common Stock,
held for the period required to avoid a charge to the Company's reported
earnings, and owned free and clear of any liens, claims, encumbrances or
security interests, which Common Stock shall be valued at its fair market value
on the date of exercise;

                           (iv) Provided that at the time of exercise the
Committee has granted its prior approval, payment by delivery of cash equal to
the par value of the Shares to be acquired on exercise together with a
promissory note (1) evidencing the Optionee's obligation to make future cash
payment(s) of principal in an amount equal to the difference between the
aggregate Option Price and the par value of the Shares to be acquired on
exercise, (2) secured by a pledge of such Shares and (3) bearing interest at a
rate fixed by the Committee; or

                           (v) Payment by a combination of the methods of
payment permitted by subparagraph 3(d)(i) through 3(d)(iv) above.

         4. CAPITAL ADJUSTMENTS. The number of Covered Shares and the Option
Price automatically shall be adjusted proportionately in the event of a stock
split or stock dividend of or with respect to the Common Stock, and the number
and class of Covered Shares and the Option Price shall be subject to such
adjustment, if any, as the Committee in its sole discretion deems appropriate to
reflect such events as adoption of stock rights plans, recapitalizations,
mergers, consolidations or reorganizations of or by the Company.

         5. EXERCISE.

                                       4.

<PAGE>

                  (a) NOTICE. The Option shall be exercised, in whole or in
part, by the delivery to the Company of written notice of such exercise, in such
form as the Committee may from time to time prescribe, accompanied by (i) full
payment of the Option Price with respect to that portion of the Option being
exercised as provided in Paragraph 3(d) of this Agreement and, if required under
applicable income tax laws, (ii) any amounts required to be withheld pursuant to
applicable income tax laws in connection with such exercise. Until the Committee
notifies the Optionee to the contrary, the form attached to this Agreement as
Exhibit A shall be used to exercise the Option.

                  (b) EFFECT. The exercise, in whole or in part, of the Option
shall cause a reduction in the number of Covered Shares equal to the number of
Shares of Common Stock with respect to which the Option is exercised.

         6. RIGHTS AS STOCKHOLDER. The Optionee shall have no rights as a
stockholder with respect to any Shares subject to the Option until and unless a
certificate or certificates representing such Shares are issued to the Optionee
pursuant to this Agreement. Except as provided in Paragraph 4, no adjustment
shall be made for dividends or other rights for which the record date is prior
to the issuance of such certificate or certificates.

         7. SERVICE AS CONSULTANT. Neither the granting of the Option evidenced
by this Agreement nor any term or provision of this Agreement shall constitute
or be evidence of any understanding, express or implied, on the part of the
Company or any of its Affiliate to engage the services of the Optionee for any
period.

         8. RESTRICTION UPON SHARES OF COMMON STOCK ISSUED UPON EXERCISE.
Notwithstanding any other provision of this Agreement, the Optionee agrees, for
himself and his successors, that, if required under applicable federal or state
securities laws, upon the issuance of any Shares upon the exercise of the
option, he will, upon the request of the Company, agree in writing that he is
acquiring such Shares for investment only and not with a view to resale, and
that he will not sell, pledge or otherwise dispose of such Shares so issued
unless and until (a) the Company is furnished with an opinion of counsel to the
effect that registration of such Shares pursuant to the Securities Act of 1933,
as amended, is not required by that Act and the rules and regulations
thereunder; (b) the staff of the Securities and Exchange Commission has issued a
"no-action" letter with respect to such disposition; or (c) such registration or
notification as is, in the opinion of counsel for the Company, required for the
lawful disposition of such Shares has been filed by the Company and has become
effective; provided, however, that the Company is not obligated hereby to file
any such registration or notification. The Optionee further agrees that the
Company may place a legend embodying such restriction on the certificates
evidencing such Shares.

                                       5.

<PAGE>

         9. GENERAL PROVISIONS.

                  (a) This Agreement shall not confer upon any Director,
Employee, or Consultant any legal or equitable right against the Company, any
Subsidiary, the Committee or the CEO, except as expressly provided in this
option grant.

                  (b) This Agreement does not constitute inducement or
consideration for the employment of any Employee or the service of any Director
or Consultant. This Agreement shall not give a Director, Employee or Consultant
any right to be retained in the service of the Company or a Subsidiary.

                  (c) The interest of any Director, Employee or Consultant under
this Agreement are not subject to the claims of creditors and may not, in any
way, be assigned, alienated or encumbered except as provided in Item 3(c).

                  (d) This Agreement shall be governed, construed and
administered in accordance with the laws of Delaware.

         IN WITNESS WHEREOF, the Company has caused this Agreement to be signed
on its behalf effective as of the Date of Grant.

ATTEST:                                    MAXIM PHARMACEUTICALS, INC.

                                           By:
--------------------                            --------------------------------
                                                Larry G. Stambaugh
                                                President and Chief Executive
                                                Officer

Accepted and agreed to as of the Date of Grant.

                                           -------------------------------------
                                           Optionee

                                       6.

<PAGE>

                                    EXHIBIT A

                               EXERCISE OF OPTION

Board of Directors
Maxim Pharmaceuticals, Inc.
8899 University Center Lane, Suite 400
San Diego, California 92122

Gentlemen:

The undersigned, the Optionee under the Nonqualified Stock Option Agreement
identified as Option No. ___ - ___, granted by Maxim Pharmaceuticals, Inc.
hereby irrevocably elects to exercise the Option granted in the Agreement to
purchase _____ shares of Common Stock of Maxim Pharmaceuticals, Inc., par value
$.001 per share, and herewith makes payment of $_______________ the form of
_______________ [cash, Common Stock, cash plus Common Stock. (Please complete.)

Dated:
      --------------------------              -------------------------------
                                              (Signature of Optionee)

Date Received by Maxim Pharmaceuticals, Inc.:
                                             ---------------------
         Received by:
                     -------------------

[Note: Shares of Common Stock being delivered in payment of all or any part of
the exercise price must be represented by certificates registered in the name of
the Optionee and duly endorsed by the Optionee and by each and every other
co-owner in whose name the shares may also be registered. If the Committee has
agreed to permit the exercise of this option pursuant to a promissory note and
pledge of shares, the original executed note and pledge agreement must accompany
this notice of exercise.]

                                       1.<PAGE>

                                                                   Exhibit 4.1.8

--------------------------------------------------------------------------------
                           FIFTH AMENDMENT AND CONSENT
               TO AMENDED AND RESTATED REVOLVING CREDIT AGREEMENT
--------------------------------------------------------------------------------

         This Fifth Amendment and Consent to Amended and Restated Revolving
Credit Agreement (this "FIFTH AMENDMENT") is made and entered into as of May 14,
1999, by and among AU BON PAIN CO., INC., a Delaware corporation ("ABP"), SAINT
LOUIS BREAD COMPANY, INC., a Delaware corporation ("SAINT LOUIS BREAD"), ABP
MIDWEST MANUFACTURING CO., INC., a Delaware corporation ("ABP MIDWEST", and,
collectively with ABP and Saint Louis Bread, the "BORROWERS"), and BANKBOSTON,
N.A., a national banking association ("BKB") and the other lending institutions
listed on SCHEDULE 1 hereto (collectively with BKB, the "BANKS"), and
BANKBOSTON, N.A. as agent for the Banks (in such capacity, the "AGENT"),
amending certain provisions of the Amended and Restated Revolving Credit
Agreement dated as of February 13, 1998 (as amended by the First Amendment to
Amended and Restated Revolving Credit Agreement dated as of June 30, 1998, the
Second Amendment and Waiver to Amended and Restated Revolving Credit Agreement
dated as of October 14, 1998, the Third Amendment and Waiver to Amended and
Restated Revolving Credit Agreement dated as of January 20, 1999, the Fourth
Amendment and Waiver to Amended and Restated Revolving Credit Agreement dated as
of March 25, 1999 and as further amended and in effect from time to time, the
"CREDIT AGREEMENT") by and among the Borrowers, the Banks and the Agent. Terms
not otherwise defined herein which are defined in the Credit Agreement shall
have the same respective meanings herein as therein.

         WHEREAS, immediately prior to the effectiveness of this Fifth
Amendment, the BKB has accepted an assignment of the entire interest of USTrust
under the Credit Agreement pursuant to that certain Assignment and Acceptance
(the "Assignment") of even date herewith, by and among BKB, USTrust, the
Borrowers, and the Agent;

         WHEREAS, simultaneously with the effectiveness of this Fifth Amendment
the Borrowers are closing a transaction (the "Sale") to sell the part of their
business generally known as Au Bon Pain (the "Sale"); and

         WHEREAS, the Borrowers, the Banks and the Agent have agreed to modify
certain terms and conditions of the Credit Agreement as specifically set forth
in this Fifth Amendment;

         NOW, THEREFORE, in consideration of the premises and the mutual
agreements contained herein and for other good and valuable consideration, the
receipt and sufficiency of which are hereby acknowledged, the parties hereto
hereby agree as follows:

<PAGE>

                                      -2-

       SECTION 1. AMENDMENT TO SECTION 1 OF THE CREDIT AGREEMENT. Section 1.1 of
the Credit Agreement is hereby amended as follows:

         (a) by deleting the definition of "ABP" in its entirety and hereby
replacing it with the following definition:

          ABP. Au Bon Pain Co., Inc., a Delaware corporation, PROVIDED that the
          name of such corporation may change to Panera Bread Company.

         (b) by deleting the definition of "Applicable Margin" in its entirety
and hereby replacing it with the following definition:

          APPLICABLE MARGIN. The Applicable Margin for Base Rate Loans shall be
          the percentage 0.75%. The Applicable Margin for Eurodollar Loans shall
          be the percentage 2.25%.

         (c) by deleting the definition of "Banks" in its entirety and hereby
replacing it with the following definition:

          BANKS. BankBoston and the other lending institutions listed on
          SCHEDULE 1 hereto, any other Person who becomes an assignee of any
          rights and obligations of a Bank pursuant to Section 17 and any
          other permitted successors or assigns.

         (d) by deleting the definition of "Borrowers" in its entirety and
hereby replacing it with the following definition:

          BORROWERS. Au Bon Pain Co., Inc., a Delaware corporation, provided
          that the name of such corporation may change to Panera Bread Company,
          Saint Louis Bread Company, Inc., a Delaware corporation, and ABP
          Midwest Manufacturing Co., Inc., a Delaware corporation, collectively,
          and if the context requires, individually.

         (e) by deleting the definition of "Consolidated EBITDA" in its entirety
and hereby replacing it with the following definition:

          CONSOLIDATED EBITDA. For any specified period, the sum of (a)
          Consolidated Net Income for such period, PLUS (b) to the extent
          deducted from the calculation of Consolidated Net Income, income tax
          expenditures for such period, PLUS (c) to the extent deducted in the
          calculation of Consolidated Net Income for such period, Consolidated
          Total Interest Expense for such period, PLUS (d) to the extent
          deducted in the calculation of Consolidated Net Income for such
          period, the aggregate amount of depreciation and amortization for such
          period, PLUS (e) to the extent deducted in the calculation of
          Consolidated Net Income for such period, other extraordinary
          nonrecurring non-cash charges, in each case determined on a
          consolidated basis for the Borrowers

<PAGE>

                                      -3-

          and their Subsidiaries in accordance with generally accepted
          accounting principles.

         (f) by deleting the definition of "Consolidated Net Income (or
Deficit)" in its entirety and hereby replacing it with the following definition:

          CONSOLIDATED NET INCOME (OR DEFICIT). For any specified period, the
          net income (or deficit) (after taxes) of the Borrowers and their
          Subsidiaries determined on a consolidated basis in accordance with
          generally accepted accounting principles after eliminating all
          extraordinary nonrecurring non-cash items of income, all extraordinary
          nonrecurring non-cash items of expense, and all inter-company items.

         (g) by deleting from the definition of "Maturity Date" the date
"December 31, 1999" and replacing it with "December 31, 2000".

         SECTION 2. AMENDMENT TO SECTION 2 OF THE CREDIT AGREEMENT. Section 3 of
the Credit Agreement is hereby amended as follows:

         (a) Section 2.2 of the Credit Agreement is hereby amended by deleting
the text "at the per annum rate of 0.375%" in the first sentence thereof and
replacing it with the text "at the per annum rate of 0.5%"

         (b) Section 2.5 of the Credit Agreement is hereby amended by deleting
the text of clause (a) in the first sentence thereof in its entirety and
replacing it with the following:

          (a) on the same day of the proposed Drawdown Date of any Base Rate
          Loan and

          (c) Section 2.8 of the Credit Agreement is hereby amended by deleting
the second sentence thereof in its entirety and replacing it with the following:

          The Borrowers shall give the Agent notice of any proposed repayment of
          Revolving Credit Loans, no later than 11:00 a.m. (Boston time) (a) on
          the date of any proposed repayment of Base Rate Loans and (b) at least
          three (3) Eurodollar Business Days' notice of any proposed repayment
          of Eurodollar Rate Loans, in each case specifying the proposed date of
          repayment and the principal amount to be paid, which notice, if not in
          writing, shall be promptly confirmed in writing.

          SECTION 3. AMENDMENT TO SECTION 3 OF THE CREDIT AGREEMENT. Section 3
of the Credit Agreement is hereby amended as follows:

         (a) Section 3.1(a) of the Credit Agreement is hereby amended by
deleting the text of clause (x) in its entirety and replacing it with the
following:

<PAGE>

                                      -4-

          (x) the sum of the aggregate Maximum Drawing Amount and all Unpaid
          Reimbursement Obligations shall not exceed $3,000,000 at any one time
          and

         (b) Section 3.6 of the Credit Agreement is hereby amended by deleting
the text "in advance" after "The Borrowers shall pay" in the first sentence
thereof and replacing it with "quarterly in arrears"

         (c) Section 3.6 of the Credit Agreement is hereby amended by deleting
in its entirety the text of clause (i) in the first sentence thereof and
replacing it with the following:

          (i) 2.25% per annum of the Maximum Drawing Amount of each Letter of
          Credit, or

          SECTION 4. AMENDMENT TO SECTION 4 OF THE CREDIT AGREEMENT. Section
4.11 of the Credit Agreement is hereby amended by deleting the text of Section
4.11 in its entirety and replacing it with the following:

               SECTION 4.11. INTEREST ON OVERDUE AMOUNTS. Overdue principal and
         (to the extent permitted by applicable law) interest on the Revolving
         Credit Loans and all other overdue amounts payable hereunder or under
         any of the other Loan Documents shall bear interest compounded daily
         and payable on demand at a rate per annum equal to two percent (2.0%)
         above the Base Rate until such amount shall be paid in full (after as
         well as before judgment).

         SECTION 5. AMENDMENT TO SECTION 6 OF THE CREDIT AGREEMENT. Section 6.18
of the Credit Agreement is hereby amended by deleting the date "December 13,
1994" and replacing it with "December 22, 1998".

         SECTION 6. AMENDMENT TO SECTION 7 OF THE CREDIT AGREEMENT. Section 7 of
the Credit Agreement is hereby amended as follows:

         (a) Section 7.1(g) of the Credit Agreement is hereby amended by
replacing ";" at the end of such clause with "; and";

         (b) Section 7.1(h) of the Credit Agreement is hereby amended by
replacing ";" at the end of such clause with ".";

         (c) Sections 7.1(i), 7.1(j) and 7.1(k) of the Credit Agreement are
hereby amended by deleting the text of such clauses in their entirety;

         (d) Section 7.3(iv) is hereby amended by deleting the text of such
clause in its entirety and replacing it with the following:

          (iv) liens in respect of judgments or awards, the Indebtedness with
          respect to which is permitted by Section 7.1(f);

<PAGE>

                                      -5-

         (e) Section 7.3(viii) is hereby amended by deleting the text of such
clause in its entirety and replacing it with the following:

         (viii) [Intentionally omitted];

         (f) Section 7.3(ix) is hereby amended by deleting the text of such
clause in its entirety and replacing it with the following:

         (ix) liens in respect of purchase money indebtedness permitted under
         Section 7.1(h); and

         (g) Section 7.4(b) of the Credit Agreement is hereby amended by
replacing ";" at the end of such clause with "; and";

         (h) Section 7.4(c) of the Credit Agreement is hereby amended by
replacing ";" at the end of such clause with ".";

         (i) Sections 7.4(d) and 7.4(e) of the Credit Agreement are hereby
amended by deleting the text of such clauses in their entirety; and

         (j) Section 7.11 of the Credit Agreement is hereby amended by deleting
the text of Section 7.11 in its entirety.

         SECTION 7. AMENDMENT TO SECTION 8 OF THE CREDIT AGREEMENT. Section 8 of
the Credit Agreement is hereby amended as follows:
                  --------- -- -- -- --- ------ ---------

         (a) Section 8.1 of the Credit Agreement is hereby amended by deleting
the text of Section 8.1 in its entirety and replacing it with the following:

                Section 8.1. MINIMUM ALLOWABLE CONSOLIDATED EBITDA. The Borrower
          will not permit Consolidated EBITDA calculated for each fiscal quarter
          ending on a date set forth below to be less than the amount set forth
          opposite such date in the table below:

<TABLE>
<CAPTION>
               ----------------------------------------------------------------
                       FISCAL QUARTER                       CONSOLIDATED
                           ENDING                              EBITDA
               ----------------------------------------------------------------
                       <S>                                  <C>
                         10/02/1999                          $1,500,000
               ----------------------------------------------------------------
                         12/27/1999                          $2,500,000
               ----------------------------------------------------------------
                          4/05/2000                          $2,500,000
               ----------------------------------------------------------------
                          7/01/2000                          $2,000,000
               ----------------------------------------------------------------
                          9/30/2000                          $2,000,000
               ----------------------------------------------------------------
                         12/23/2000                          $3,000,000
               ----------------------------------------------------------------
</TABLE>

         (b) Section 8.2 of the Credit Agreement is hereby amended by deleting
the text of Section 8.2 in its entirety and replacing it with the following:

<PAGE>

                                      -6-

               Section 8.2. MAXIMUM CAPITAL EXPENDITURES. The Borrowers will not
          permit Consolidated Capital Expenditures to exceed $25,000,000 for any
          period consisting of four (4) consecutive fiscal quarters of the
          Borrowers ending on or after October 2, 1999.

         (c) Sections 8.3 and 8.4 of the Credit Agreement are hereby amended by
deleting the text of Sections 8.3 and 8.4 in their entirety.

         SECTION 8. AMENDMENT TO SECTION 11 OF THE CREDIT AGREEMENT. Section
11 of the Credit Agreement is hereby amended by deleting clause (k) in its
entirety and replacing it with the following:

         (k) [Intentionally omitted];

         SECTION 9. AMENDMENT TO SECTION 17 OF THE CREDIT AGREEMENT. Section
17 of the Credit Agreement is hereby amended by deleting the last sentence of
Section 17 in its entirety and replacing it with the following:

         Each Bank shall have the right to assign or transfer at any time its
         rights and benefits and obligations or any portion thereof under this
         Credit Agreement or any other Loan Document with the prior written
         consent of the Borrowers (unless a Default or Event of Default shall
         occur and be then continuing or unless such Bank is required to do so
         under applicable laws in which case the prior written consent of the
         Borrowers will not be required) and the Agent. Assignments or transfers
         of commitment obligations of a Bank which require the consent of the
         Borrowers shall be in integral multiples of $5,000,000.

         SECTION 10. AMENDMENT TO SCHEDULE 1.1(a) OF THE CREDIT AGREEMENT.
SCHEDULE 1.1(a) of the Credit Agreement is hereby amended by deleting SCHEDULE
1.1(a) in its entirety and replacing it with SCHEDULE 1.1(a) attached hereto.

         SECTION 11. CONSENT. Notwithstanding anything to the contrary set
forth in Section 7.6, Section 7.7 or Section 7.9 of the Credit Agreement, ABP
may transfer substantially all of the operating assets, store leases,
contracts and liabilities associated with ABP's bakery cafe food service
business concept generally known as Au Bon Pain (but in any event excluding
the capital stock of Saint Louis Bread) to its wholly-owned subsidiaries, ABP
Holdings, Inc. and ABP Equipment, Inc. and ABP Equipment, Inc. may merge into
ABP Holdings, Inc. immediately prior to the sale of the common stock of ABP
Holdings, Inc. to ABP Corporation, a Delaware corporation controlled by
Bruckman, Rosser, Sherill & Co., Inc., a private equity investment firm based
in New York, pursuant to the terms of a Stock Purchase Agreement dated August
12, 1998 and amended on October 28, 1998, by and among ABP, ABP Holdings,
Inc. and ABP Corporation and may sell the common stock of ABP Holdings, Inc.
to ABP Corporation as provided in such Stock Purchase Agreement for a
purchase price equal to $73,000,000 as adjusted as provided therein; PROVIDED

<PAGE>

                                      -7-

that the proceeds of the sale of such common stock (net of any costs and
expenses payable by the Borrowers in connection with such sale and the principal
amounts of any indebtedness secured by such assets and required to be repaid in
connection with such sale) shall be applied by the Borrowers to repay the
outstanding principal amount of the Revolving Credit Loans and any and all
amounts due under the terms of this Fifth Amendment before such proceeds are
used to pay any Subordinated Debt.

         SECTION 12. REPRESENTATIONS AND WARRANTIES. Each of the Borrowers
hereby repeats, on and as of the date hereof, each of the representations and
warranties made in ss.5 of the Credit Agreement as though such representations
and warranties refer specifically to such Borrower, except to the extent of
changes resulting from transactions contemplated or permitted by this Fifth
Amendment or the Credit Agreement and except to the extent that such
representations and warranties relate expressly to an earlier date; provided,
that all references therein to the Credit Agreement shall refer to such Credit
Agreement as amended hereby. No Default or Event of Default has occurred and is
continuing under the Credit Agreement after giving effect to this Fifth
Amendment.

         SECTION 13. PAYMENT OF 4.75% SUBORDINATED CONVERTIBLE NOTES. No Bank
shall have any obligation to make any Revolving Credit Loan and the sum of the
aggregate Maximum Drawing Amount and all Unpaid Reimbursement Obligations for
all Letters of Credit issued after the date hereof shall not exceed $500,000
unless and until the prior payment in full or other satisfaction of all amounts
owing under the 4.75% Subordinated Convertible Notes and the Agent has received
evidence in form and substance satisfactory to the Agent that the obligations of
the Borrowers under such 4.75% Subordinated Convertible Notes have been
terminated.

         SECTION 14. TRANSITIONAL ARRANGEMENTS. All commitment and other fees
which accrued prior to the date hereof under the Credit Agreement but which
remain unpaid on the date hereof shall be calculated as of the date hereof (PRO
RATED in the case of any fractional periods) and paid by the Borrowers hereunder
in accordance with the method and on the dates specified in the Credit Agreement
and shall be allocated PRO RATA between USTrust and BKB in accordance with their
respective "Commitment Percentages", as defined in the Credit Agreement as in
effect immediately prior to the effectiveness of the Assignment. All interest on
Revolving Credit Loans which accrued prior to the date hereof under the Credit
Agreement will be calculated and paid on the date hereof and shall be allocated
PRO RATA between USTrust and BKB in accordance with their respective "Commitment
Percentages", as defined in the Credit Agreement as in effect immediately prior
to the effectiveness of the Assignment.

<PAGE>

                                      -8-

         SECTION 15. CHANGE OF NAME. The Borrowers shall deliver to the Agent
certified copies of any documents filed with or received
from the State of Delaware related to a change of any Borrower's name.

         SECTION 16. EFFECTIVENESS. The effectiveness of this Fifth Amendment
shall be subject to the satisfaction of the following
conditions precedent:

                  Section 16.1 LOAN DOCUMENTS. This Fifth Amendment shall have
         been duly executed and delivered to the Agent by each of the parties to
         the Credit Agreement.

                  Section 16.2. NO DEFAULT. No Default or Event of Default has
         occurred and is continuing under the Credit Agreement immediately after
         giving effect to this Fifth Amendment.

                  Section 16.3. PAYMENT OF FEES. The Borrowers  shall have paid
         to the Agent any and all fees payable in connection with the
         transactions contemplated by this Fifth Amendment.

                  Section 16.4. IMPERIO TERM LOAN AGREEMENT. All amounts owing
         to USTrust in connection with the Assignment and Release dated as of
         May 13, 1999 by USTrust to ABP Holdings, Inc and ABP shall have been
         paid in full and all obligations of USTrust under the Imperio Term Loan
         Agreement shall have been extinguished.

                  Section 16.5. USTRUST ISSUED LETTERS OF CREDIT. The Agent
         shall have received evidence satisfactory to USTrust and the Agent that
         all letters of credit issued by USTrust have either been returned or
         the beneficiaries to such letters of credit will not submit drafts
         thereon.

                  Section 16.6. APPLICATION OF PROCEEDS FROM SALE. The Agent
         shall have received (a) payoff letters from all other lenders being
         paid on the date hereof, indicating the amount of the debt obligations
         of the Borrowers to be discharged on the date hereof and an
         acknowledgement by such exiting lenders that upon receipt of such
         funds the Borrowers will be released from any and all obligations due
         to such exiting lenders; and (b) a memorandum from the Borrowers
         outlining the flow of funds received as proceeds from the Sale.

         SECTION 17. RATIFICATION, ETC. Except as expressly amended hereby, the
Credit Agreement and all documents, instruments and agreements related thereto,
including, but not limited to the Loan Documents, are hereby ratified and
confirmed in all respects and shall continue in full force and effect. The
Credit Agreement and this Fifth Amendment shall be read and construed as a
single agreement. All references in the Credit Agreement or any related
agreement or instrument to the Credit Agreement shall hereafter refer to the
Credit Agreement as amended hereby.

<PAGE>

                                      -9-

         SECTION 18. NO WAIVER. Nothing contained herein shall constitute a
waiver of, impair or otherwise affect any Obligations, any other obligation of
the Borrowers or any rights of the Agent or the Banks consequent thereon.

         SECTION 19. COUNTERPARTS. This Fifth Amendment may be executed in one
or more counterparts, each of which shall be deemed an original but which
together shall constitute one and the same instrument.

         SECTION 20. GOVERNING LAW. THIS FIFTH AMENDMENT SHALL BE GOVERNED BY,
AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE COMMONWEALTH OF MASSACHUSETTS
(WITHOUT REFERENCE TO CONFLICT OF LAWS).

                  [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]

<PAGE>

         IN WITNESS WHEREOF, the parties hereto have executed this Fifth
Amendment as a document under seal as of the date first above written.

                                AU BON PAIN CO., INC.

                                By:    /s/ Ronald M. Shaich
                                       -----------------------------------------
                                       Name:  Ronald M. Shaich
                                       Title:  Chairman/Chief Executive Officer

                                SAINT LOUIS BREAD COMPANY, INC.

                                By:    /s/ Ronald M. Shaich
                                       -----------------------------------------
                                       Name:  Ronald M. Shaich
                                       Title:  Chairman/Chief Executive Officer

                                ABP MIDWEST MANUFACTURING CO., INC.

                                By:    /s/ Ronald M. Shaich
                                       -----------------------------------------
                                       Name:  Ronald M. Shaich
                                       Title:  Chairman/Chief Executive Officer

                                BANKBOSTON, N.A.
                                   INDIVIDUALLY AND AS AGENT

                                By:    /s/  Thomas P. Tansi
                                       -----------------------------------------
                                       Name:  Thomas P. Tansi
                                       Title:  Vice President

<PAGE>

                                                                SCHEDULE 1.1(a)

                          REVOLVING CREDIT COMMITMENTS

<TABLE>
<CAPTION>
--------------------------------------------------------------------------------
                                                                   COMMITMENT
LENDER                                          COMMITMENT         PERCENTAGE
--------------------------------------------------------------------------------
<S>                                           <C>                  <C>
BANKBOSTON, N.A.                              $10,000,000.00          100%
   100 Federal Street
   Boston, Massachusetts 02110
   Telefax Number: (617) 434-4426
   Telex: 940581
   Answerback: BOSTONBK BSN
   Attention:     Thomas P. Tansi, 01-09-05
--------------------------------------------------------------------------------
</TABLE>

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