Document:

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                                                                   EXHIBIT 10.41
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                                      NABI
                      5800 PARK OF COMMERCE BOULEVARD, N.W.
                            BOCA RATON, FLORIDA 33487

February 15, 2001

Attention:    David J. Gury
              Chairman and Chief Executive Officer

Dear Ladies/Gentlemen:

         This letter agreement (the "Agreement") is to confirm the engagement of
Stonebridge Associates, LLC ("Stonebridge") as financial advisor to Nabi (the
"Company") in connection with the Company's review and implementation of a
divestiture strategy, whereby the Company intends to divest 47 of its antibody
collection centers and its central testing laboratory (collectively the
"Antibody Business") to an appropriate strategic acquiror (the "Transaction").
The terms and conditions of Stonebridge providing financial advisory services
are presented below.

         1.       FINANCIAL ADVISORY SERVICES: Stonebridge will work closely
with you to:

                  a.       Assist in all aspects of the strategic review and
                           financial analysis of the proposed Transaction.

                  b.       Prepare a detailed financial valuation of the
                           proposed Transaction to include

                           i)       Valuing the Antibody Business to provide the
                                    basis of evaluating offers to be received
                                    for the Transaction;

                           ii)      Valuing Nabi today with the Company's
                                    continued ownership of the Antibody
                                    Business, to provide a benchmark for
                                    assessing the shareholder impact of the
                                    Transaction; and

                           iii)     Valuing Nabi post-Transaction, assuming a
                                    range of values to be received in the
                                    Transaction.

                  c.       Prepare all financial information required by the
                           Company's New York and Delaware counsel for purposes
                           of such counsel delivering all opinions requested by
                           Nabi.

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                  d.       Assist in identifying and evaluating appropriate
                           strategic acquirors. For each potential acquiror we
                           will:

                           i)       Provide a strategic assessment of such
                                    acquiror's existing antibody business; and

                           ii)      Evaluate the acquiror's strategic rationale
                                    for completing the Transaction.

                  e.       Prepare information on the Antibody Business to be
                           provided to potential acquirors (the "Information").
                           For each acquiror, the Information will reflect the
                           assessment of its strategic rationale for the
                           Transaction.

                  f.       As appropriate, contact potential acquirors or
                           provide follow-up to the Company's contact, supply
                           the Information and manage the process by which
                           potential acquirors will conduct their due diligence
                           investigation of the Antibody Business.

                  g.       Assist the Company in reviewing and assessing
                           potential Transaction proposals, structures and
                           valuations.

                  h.       Advise the Company and actively participate in all
                           discussions and negotiations with potential
                           acquirors.

                  i.       As needed, assist the Company and its legal counsel
                           in the preparation of the Transaction purchase
                           agreement and other legal documentation.

                  j.       If necessary, advise the Company with regard to
                           restructuring all current financing arrangements in
                           order to accommodate and facilitate the Transaction.

                  k.       Provide all financial and valuation analyses required
                           to assist the Company with debt restructuring
                           discussions with lenders; and

                  l.       At the request of the Company or its Board of
                           Directors, render an opinion in writing with respect
                           to the fairness, from a financial point of view, of
                           the consideration received in the Transaction.

         2.       INFORMATION: Stonebridge will not distribute the Information
other than to our employees and professional advisors directly involved in the
Transaction nor shall we distribute the Information to any potential acquirors
without your prior approval, and without first obtaining a signed
confidentiality agreement having terms acceptable to the

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Company. We will keep strict control over the disposition of the Information,
and attempt to retrieve all copies of the Information given to parties who
decide not to pursue a Transaction.

         3.       COMPENSATION ARRANGEMENTS: As compensation for providing the
financial advisory services outlined herein, Stonebridge will be entitled to the
following fees:

                  a)       A monthly retainer of $15,000 per month payable in
                           advance, with the first payment due upon the
                           Company's signing of an engagement letter; plus

                  b)       A Transaction success fee payable upon the closing of
                           the Transaction equal to $450,000, plus 1.5% of all
                           consideration received in the Transaction between $90
                           million and $100 million plus 2.0% of all
                           consideration received in excess of $100 million
                           (the "Transaction Success Fee"); plus

                  c)       A fairness opinion fee of $50,000 payable upon
                           Stonebridge's delivery of the fairness opinion.

Stonebridge's total Transaction Success Fee shall not exceed an amount equal to
..8% of total consideration received in the Transaction.

         If during the term of Stonebridge's engagement, the Company decides to
proceed with a transaction in which Nabi is acquired by or merged with any
potential acquiror ("Acquisition Transaction"), the Company may choose to
retain Stonebridge or other investment banker to advise Nabi in the Acquisition
Transaction. If the Company elects to retain Stonebridge, Stonebridge's fee
shall be

                  1)       A monthly retainer fee of $15,000 per month, payable
                           in advance; plus

                  2)       A transaction success fee payable upon the closing of
                           such transaction equal to .5% of the consideration
                           received or exchanged in the Acquisition Transaction
                           ("Acquisition Success Fee"); plus

                  3)       If requested to provide a fairness opinion, a fee of
                           $100,000 payable upon Stonebridge's delivery of the
                           fairness opinion.

Stonebridge's Transaction Success Fee and Acquisition Success Fee shall be
reduced by an amount equal to the total monthly retainers previously paid, up to
a maximum of $40,000.

         If in pursuing an Acquisition Transaction, the Company decides to
retain an investment banker other than Stonebridge, upon the successful
completion of such transaction, Stonebridge will be entitled to a fee of
$300,000 if such transaction is consummated with an acquiror contacted by
Stonebridge as part of the engagement, or $150,000 if a transaction is
consummated with any other acquiror.

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         For purposes of calculating Stonebridge's success fees, consideration
shall mean the sum of the cash, fair market value of any other securities,
assets, obligations, or any other consideration agreed to be paid or provided by
or on behalf of the acquiror in connection with the Transaction, plus if not
already included in the sum above, the principal amount of all obligations for
indebtedness for borrowed money remaining with the Company or assumed by the
acquiror in connection with the Transaction.

         The amount of consideration involved in a transaction shall be
determined, and such fee shall be paid, subject to the terms hereof, at the time
a transaction is consummated. If, however a portion of the consideration is
contingent upon future events, then the portion of the fee relating to the
contingent portion of the consideration shall be payable at the consummation of
a transaction to the extent that Stonebridge and the Company can agree on the
amount, or, failing that agreement, shall be payable when the contingent portion
of the consideration is received.

         In the event that the Company consummates a transaction not
specifically addressed by this proposal with a potential acquiror contacted as
part of this engagement, the Company and Stonebridge shall, in good faith,
negotiate a mutually agreeable fee arrangement incorporating the general
parameters of these fee arrangements specifically outlined in this proposal.

         4.       OUT OF POCKET EXPENSES: In addition to any fees that may be
payable to Stonebridge hereunder (and regardless of whether the Transaction
occurs), the Company hereby agrees to reimburse Stonebridge monthly for
reasonable travel and other out-of-pocket expenses incurred in performing its
services hereunder.

         5.       INDEMNIFICATION PROVISIONS: The Company agrees to indemnify
Stonebridge and related persons in accordance with the Standard Form of
Indemnification Agreement attached hereto as Exhibit A, the provisions of which
are incorporated herein by this reference.

         6.       RELIANCE ON REPORTS/ACCURACY OF INFORMATION: The Company
agrees that Stonebridge shall be entitled to rely upon all reports of the
Company and/or information supplied to Stonebridge by or on behalf of the
Company (whether written or oral), and Stonebridge shall not in any respect be
responsible for the accuracy or completeness of any such report or information
or have any obligation to verify the same.

         7.       COMMUNICATION AND ADVERTISEMENTS: Stonebridge may not be
quoted or referred to in any document, release or written or verbal
communication prepared, issued or transmitted by the Company or any entity
controlled by the Company, or any director, officer, employee, or agent thereof,
without Stonebridge's prior written authorization. The Company agrees that,
subsequent to the closing of a Transaction, Stonebridge has the right at its own
expense to place customary advertisements in financial and other newspapers and
journals and to make mailings to its current, former or prospective clients
describing its services to the Company hereunder.

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         8.       CONFIDENTIAL USE OF INFORMATION OR ADVICE: The Company agrees
that any information or advice rendered by Stonebridge or its representatives in
connection with this engagement is for the confidential use of the Company and
its Board of Directors only in its evaluation of a Transaction and, except as
otherwise required by law, the Company will not and will not permit any third
party to disclose or otherwise refer to such advice or information in any manner
without Stonebridge's prior written consent. The Company's Board of Directors
and senior management will base their decisions on Stonebridge's advice as well
as on the advice of their legal, tax and other business advisors and other
factors which they consider appropriate. Accordingly, as an independent
contractor Stonebridge will not assume the responsibilities of a fiduciary to
the Company or its shareholders in connection with the performance of
Stonebridge's services.

         9.       ADMINISTRATION PROCEEDING AND LITIGATION: In the event of
administrative proceeding or litigation in connection with the services provided
by Stonebridge, Stonebridge agrees that its representatives will testify at the
request of the Company or its counsel. Subject to the provisions of the Standard
Form of Indemnification Agreement, the Company will reimburse Stonebridge for
all out-of-pocket expenses reasonably incurred by Stonebridge in connection
therewith, including the reasonable fees and disbursements of its legal counsel,
and the Company will pay Stonebridge reasonable and customary additional
compensation as agreed upon by Stonebridge and the Company to cover preparation
for and the expenses of testifying at such litigation or proceeding, unless such
proceeding or litigation resulted in whole or in part from the gross negligence
or willful misconduct of Stonebridge, or the illegal conduct of Stonebridge or a
breach by Stonebridge of a warranty herein.

         10.      TERM OF ENGAGEMENT: The term of Stonebridge's engagement as
financial advisor to the Company shall commence on the date hereof and continue
until the earlier of the consummation of a Transaction or termination by either
party upon thirty days' prior written notice; provided, however, that the
Company cannot terminate the engagement prior to four months except in the event
that the Company has been notified by all prospective acquirors contacted by
Stonebridge that no such acquiror intends to pursue a Transaction with the
Company. In no event shall any termination of this Agreement affect the
indemnification, contribution and confidentiality obligations of the Company the
confidentiality obligation of Stonebridge, or the right of Stonebridge to
receive any unpaid amounts due hereunder as of the date of termination or
pursuant to the following sentence. Stonebridge shall be entitled to its
appropriate success fees, in the event that any time prior to the expiration of
twelve months after termination of this Agreement a Transaction or Acquisition
Transaction is consummated with any party contacted by Stonebridge or the
Company pursuant to this Agreement or with any party which contacted the Company
during the term of this Agreement. Upon termination of this Agreement,
Stonebridge will provide to the Company a written list of all such parties which
have been contacted or have contacted the Company.

         11.      SOLE RECOURSE: The Company's sole recourse with respect to
this Agreement for any matter relating to this Agreement shall be to Stonebridge
and in no

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event shall the Company have any recourse or assert any claim against or seek
recovery from any other Indemnified Party as defined in the Standard Form of
Indemnification Agreement.

         12.      GOVERNING LAW/MISCELLANEOUS: This Agreement (a) shall be
governed by and construed in accordance with the laws of the Commonwealth of
Massachusetts without regard to conflicts of law principles, (b) incorporates
the entire understanding of the parties with respect to the subject matter
hereof and supersedes all previous agreements should they exist with respect
thereto, (c) may not be amended or modified except in a writing executed by the
Company and Stonebridge and (d) shall be binding upon and inure to the benefit
of the Company, Stonebridge, any indemnified parties and their respective heirs,
personal representatives, successors and assigns. Except as otherwise
contemplated by Exhibit A hereto, nothing in this agreement is intended to
confer upon any other person other than the parties hereto any rights or
remedies hereunder or by reason hereof.

         13.      WARRANTY OF STONEBRIDGE: Stonebridge hereby represents and
warrants that it is aware that U.S. securities laws prohibit any person who has
material non-public information about a company from purchasing or selling
securities of such company and further warrants that Stonebridge will not, and
that Stonebridge has instructed its representatives that they should not, use
the Information supplied pursuant to this Agreement in any way which may violate
any securities or anti-trust law, and that Stonebridge will comply with all
applicable provisions of all federal, state and local laws and all ordinances,
rules and regulations thereunder.

         14.      DISCLOSURES REQUIRED BY LAW: In the event that Stonebridge is
requested or required by law to disclose any of the Information, it is agreed
that Stonebridge will provide Company with prompt prior notice of such request
so that Company may seek an appropriate protective order and/or waive compliance
with the provisions of the Agreement.

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         This Agreement may be executed in two or more counterparts, each of
which shall be deemed to be an original, but all of which shall constitute one
and the same agreement. Please confirm that the foregoing is in accordance with
your understanding by signing and returning to us a copy of this letter.

                                       Very truly yours,

                                       STONEBRIDGE ASSOCIATES, LLC

                               BY:     /s/ Richard A. Harvey, Jr.
                                  -------------------------------------
                                       Richard A. Harvey, Jr.
                                       President

Accepted and agreed to as of
the date set forth above:

             NABI

BY:   /s/ David J. Gury
   ---------------------------
       David J. Gury

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                                                                       EXHIBIT A

STONEBRIDGE ASSOCIATES, LLC

STANDARD FORM OF INDEMNIFICATION AGREEMENT

In connection with the services Stonebridge Associates, LLC has agreed to render
to the Company, the Company agrees to indemnify and hold harmless Stonebridge
Associates, LLC, its officers, directors, employees, agents, managers, members,
affiliates and persons deemed to be in control of Stonebridge Associates, LLC
within the meaning of either Section 15 of the Securities Act of 1933, as
amended, or Section 20 of the Securities Exchange Act of 1934, as amended
(collectively, the "Indemnified Parties"), from and against any losses, claims,
damages and liabilities, joint or several, related to or arising in any manner
out of any transaction, proposal or any other matter (collectively the
"Matters") contemplated by the engagement of Stonebridge Associates, LLC
hereunder. The Company also will promptly reimburse the Indemnified Parties for
any expenses (including fees and expenses of legal counsel) as incurred in
connection with the investigation of, preparation for or defense of any pending
or threatened claim related to or arising in any manner out of any Matter
contemplated by the engagement of Stonebridge Associates, LLC hereunder, or any
action or proceeding arising therefrom, whether or not resulting in liability
(collectively, "Proceedings"). Notwithstanding the foregoing, the Company shall
not be liable in respect of any losses, claims, damages, liabilities or expenses
that a court of competent jurisdiction shall have determined by final judgment
resulted solely from the gross negligence or willful misconduct of any
Indemnified Party. Promptly after receipt by an Indemnified Party of notice of
any claim or the commencement of any action or proceeding in respect of which
indemnity may be sought against the Company, such Indemnified Party will notify
the Company in writing of the receipt of commencement thereof, and the Company
shall assume the defense of such action or proceeding (including the employment
of counsel satisfactory to the Indemnified Party and the payment of the fees and
expenses of such counsel), but the failure so to notify the Company will not
relieve the Company from any liability which it may have to any Indemnified
Party except to the extent of the Company's actual damages arising from the
failure to so notify the Company. Notwithstanding the preceding sentence, the
Indemnified Party will be entitled to employ its own counsel in such action if
the Indemnified Party reasonably determines that a conflict of interest exists
which makes representation by counsel chosen by the Company not advisable, it
being understood, however, that the Company shall not be liable for the expense
of more than one separate counsel (and one local counsel in each jurisdiction in
which it is appropriate) to represent all Indemnified Parties. In such event,
the fees and disbursements of such separate counsel will be paid by the Company.
In no event shall the Company have any liability to an Indemnified Part for any
settlement or compromise effected without the Company's written consent.

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If for any reason the foregoing indemnity is unavailable to Stonebridge
Associates, LLC or insufficient to hold Stonebridge Associates, LLC harmless,
then the Company shall contribute to the amount paid or payable by Stonebridge
Associates, LLC as a result of such claims, liabilities, losses, damages or
expenses in such proportion as is appropriate to reflect not only the relative
benefits received by the Company on the one hand and Stonebridge Associates, LLC
on the other but also the relative fault of the Company and Stonebridge
Associates, LLC, as well as any relevant equitable consideration.
Notwithstanding the provisions of this agreement, the aggregate contribution of
Stonebridge Associates, LLC to all claims, liabilities, losses, damages and
expenses shall not exceed the amount of fees actually received by Stonebridge
Associates, LLC pursuant to its engagement by the Company. It is hereby further
agreed that the relative benefits to the Company on the one hand and Stonebridge
Associates, LLC on the other hand with respect to the transactions contemplated
in this engagement letter shall be deemed to be in the same proportion as (i)
the total value of the transaction bears to (ii) the fees paid to Stonebridge
Associates, LLC with respect to such transaction.

The indemnity, contribution and expense reimbursement agreements and obligations
set forth herein shall apply whether or not an Indemnified Party is a formal
party to any Proceeding, shall be in addition to any other rights, remedies or
indemnification which any Indemnified Party may have or be entitled to at common
law or otherwise, and shall remain operative and in full force and effect
regardless of any investigation made by or on behalf of any Indemnified Party or
any withdrawal, termination or consummation of or failure to initiate or
consummate any Matter or any termination or completion or expiration of this
letter or Stonebridge Associates, LLC's engagement.<PAGE>
                                                                   EXHIBIT 10.42

                                      NABI
                      5800 PARK OF COMMERCE BOULEVARD, N.W.
                            BOCA RATON, FLORIDA 33487

                          Effective as of April 1, 2001

Mr. Thomas H. McLain
1617 SW 20th Ave
Boca Raton, Florida, 33486

Dear Tom:

You have agreed to serve as an Executive Vice President/Chief Operating Officer
(COO) for Nabi. The following are the terms of such employment:

1. TERM: You will serve as an Executive Vice-President/COO of Nabi for a period
beginning as of the date hereof and ending on March 31, 2004, unless your
employment is sooner terminated as provided below (the "Employment Period").

2. SALARY: Your salary will be $260,000.00 per year, payable bi-weekly during
the Employment Period. Your salary will be subject to discretionary annual
increases as determined by Nabi's Board of Directors.

3. BONUS: You will be entitled to participate in Nabi's VIP Management Incentive
Program.

Unless the Employment Period is terminated for "cause" pursuant to Section 7(B)
(b) below, bonus compensation shall be pro rated in respect of any calendar year
during which the Employment Period terminates based on the amount of bonus
compensation which would have been payable with respect to such year per your
original VIP Management Incentive Program participation, divided by 12, times
the number of full calendar months during the relevant year you were employed
prior to the termination of the Employment Period. If the Employment Period is
terminated pursuant to Section 7 (B)(b) below, no bonus compensation is payable
with respect to the calendar year during which it is terminated.

Bonus payments shall be payable within 120 days after the end of the relevant
calendar year.

4. AUTO ALLOWANCE: You, while an employee under the terms of this Agreement,
shall receive an auto allowance of not less than $900.00 per month.

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5. BENEFITS: During the Employment Period, you will be eligible to participate
in such fringe benefits programs as are accorded to other similarly situated
Nabi employees.

6. DUTIES AND EXTENT OF SERVICES:

(A) During the Employment Period, you agree to devote substantially all of your
working time, and such energy, knowledge, and efforts as is necessary to the
discharge and performance of your duties provided for in this Agreement and such
other reasonable duties and responsibilities consistent with your position as
are assigned to you from time to time by the person to whom you report. You
shall be located primarily in Nabi's Boca Raton, Florida facilities, but shall
travel to other locations from time to time as shall be reasonably required in
the course of performance of your duties.

(B) During the Employment Period, you shall serve as an Executive
Vice-President/COO. You shall have such duties as are delegated to you by the
person to whom you report provided that such duties shall be reasonably
consistent with those duties assigned to executive officers having similar
titles in organizations comparable to Nabi.

7. TERMINATION:

(A) The Employment Period shall terminate upon your death. You may also
terminate the Employment Period upon thirty (30) days' prior written notice to
Nabi. Any termination pursuant to this Section 7(A) shall not affect any bonus
compensation applicable to the year of such termination, provided that any bonus
compensation payable pursuant to Section 3 of this Agreement shall be pro rated
as provided for in Section 3.

(B) Nabi may terminate the Employment Period in the event of (a) your inability
to perform the essential functions of your position, with or without reasonable
accomodation for any three (3) consecutive months as the result of mental or
physical incapacity (Nabi shall have sole discretion to determine whether you
continue to be disabled) or (b) for "cause", which is defined as (i) commission
of fraud or embezzlement or other felonious acts by you, (ii) your refusal to
comply with reasonable directions in connection with the performance of your
duties as provided for in Section 6 of this Agreement after notice of such
failure is delivered to you, (iii) failure to comply with the provisions of
Section 8 or 9 of this Agreement or (iv) your gross negligence in connection
with the performance of your duties as provided for in this Agreement, which
gross negligence causes material damage to Nabi, provided that, in the event of
termination under this clause (B), you shall receive ten (10) days' notice of
such failure prior to termination and a determination must be made by Nabi's
Board of Directors or a duly appointed committee of the Board, after you are
afforded an opportunity to be

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heard, that it is, at the date of such termination, reasonable to conclude that
grounds for such termination under this clause (B) still exists.

(C) Nabi may otherwise terminate the Employment Period upon thirty (30) days'
prior notice to you. In the event of such termination based on the effective
date of such termination, Nabi will pay you severance pay of twelve (12) months
of your annual base salary as in effect at the time of such termination
("Severance Pay") and maintain in effect for a twelve (12) month period such
fringe benefits as are accorded to other similarly situated employees (to the
extent allowed under, and subject to the limitations of, applicable plans.
Severance Pay provided for in this paragraph shall be made in the form of salary
continuation and would be paid on Nabi's regular bi-weekly pay date through the
period covered. If you terminate your employment with Nabi within thirty (30)
days of the expiration of the Employment Period, you shall be entitled to
receive Severance Pay under Section 7C unless during the thirty (30) day period
prior to the expiration of the Employment Period, Nabi offered to renew this
Agreement on terms no less favorable to you than the terms then in effect.

(D) If your employment terminates pursuant to Section 7B(a), Section 7C or as a
result of your death, all non-vested stock options, restricted stock or similar
incentive equity instruments pursuant to the Company's 1990, 2000 Equity
Incentive Plans and/or successor plans, (the "Options"), shall immediately vest.
All such "Options" shall be exercisable for one (1) year past the termination
date, except that no "Options" shall be exercisable beyond the original "Option"
expiration date. To the extent the terms of any "Options" are inconsistent with
this Agreement, the terms of this Agreement shall control.

(E) All payments or benefits to you under this Section 7 (other than payments or
benefits already accrued and otherwise due under Nabi's employee benefit plans
or programs) will not be given unless you execute (and do not rescind) a written
employment termination agreement in a form prescribed by Nabi, which includes a
general release of all claims against Nabi and related parties with respect to
all matters occurring to the date of the release, including (but not limited to)
employment matters or matters in connection with your termination.

(F) Your confidentiality and non-competition agreements set forth in Sections 8
and 9 below shall survive the termination of your employment regardless of the
reasons therefor.

8. CONFIDENTIALITY: You acknowledge that your duties as described in Section 6
of this Agreement will give you access to trade secrets and other confidential
information of Nabi and/or its affiliates, including but not limited to
information concerning production and marketing of their respective products,
customer lists, and other information relating to their present or future
operations (all of the foregoing, whether or not it qualifies as a "trade
secret" under applicable law, is collectively called

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"Confidential Information"). You recognize that Confidential Information is
proprietary to each such entity and gives each of them significant competitive
advantage.

Accordingly, you shall not use or disclose any of the Confidential Information
during or after the Employment Period, except for the sole and exclusive benefit
of the relevant company. Upon any termination of the Employment Period, you will
return to the relevant company's office all documents, computer tapes, and other
tangible embodiments of any Confidential Information. You agree that Nabi would
be irreparably injured by any breach of your confidentiality agreement, that
such injury would not be adequately compensable by monetary damages, and that,
accordingly, the offended company may specifically enforce the provisions of
this Section by injunction or similar remedy by any court of competent
jurisdiction without affecting any claim for damages.

9. NON-COMPETITION:

(A) You acknowledge that your services to be rendered are of a special and
unusual character and have a unique value to Nabi the loss of which cannot
adequately be compensated by damages in an action at law. In view of the unique
value of the services, and because of the Confidential Information to be
obtained by or disclosed to you, and as a material inducement to Nabi to enter
into this Agreement and to pay to you the compensation referred to above and
other consideration provided, you covenant and agree that you will not, during
the term of your employment by Nabi and for a period of one (1) year after
termination of such employment for any reason whatsoever, you will not, directly
or indirectly, (a) engage or become interested, as owner, employee, consultant,
partner, through stock ownership (except ownership of less than five percent of
any class of securities which are publicly traded), investment of capital,
lending of money or property, rendering of services, or otherwise, either alone
or in association with others, in the operations, management or supervision of
any type of business or enterprise engaged in any business which is competitive
with any business of Nabi (a "Competitive Business"), (b) solicit or accept
orders from any current or past customer of Nabi for products or services
offered or sold by, or competitive with products or services offered or sold by,
Nabi, (c) induce or attempt to induce any such customer to reduce such
customer's purchase of products or services from Nabi, (d) disclose or use for
the benefit of any Competitive Business the name and/or requirements of any such
customer or (e) solicit any of Nabi's employees to leave the employ of Nabi or
hire or negotiate for the employment of any employee of Nabi.

(B) You have carefully read and considered the provisions of this Section and
Section 8 and having done so, agree that the restrictions set forth (including
but not limited to the time period of restriction and the world wide areas of
restriction) are fair and reasonable (even if termination is at our request and
without cause) and are reasonably required for the protection of the interest of
Nabi, its officers, directors, and other employees. You acknowledge that upon
termination of this Agreement for any reason, it may be necessary for you to
relocate to another area, and you agree that this restriction is fair and
reasonable and is reasonably required for the protection of the interests of
Nabi, their officers, directors, and other employees.

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<PAGE>

(C) In the event that, notwithstanding the foregoing, any of the provisions of
this Section or Section 8 shall be held to be invalid or unenforceable, the
remaining provisions thereof shall nevertheless continue to be valid and
enforceable as though invalid or unenforceable parts had not been included
therein. In the event that any provision of this Section relating to time period
and/or areas of restriction shall be declared by a court of competent
jurisdiction to exceed the maximum time period or areas such court deems
reasonable and enforceable, said time period and/or areas of restriction shall
be deemed to become, and thereafter be, the maximum time period and/or area
which such court deems reasonable and enforceable.

(D) With respect to the provisions of this Section, you agree that damages, by
themselves, are an inadequate remedy at law, that a material breach of the
provisions of this Section would cause irreparable injury to the aggrieved
party, and that provisions of this Section 9 may be specifically enforced by
injunction or similar remedy in any court of competent jurisdiction without
affecting any claim for damages.

10. MISCELLANEOUS: This Agreement and the rights and obligations of the parties
pursuant to it and any other instruments or documents issued pursuant to it
shall be construed, interpreted and enforced in accordance with the laws of the
State of Florida, exclusive of its choice-of-law principles. This Agreement
shall be binding upon and inure to the benefit of the parties hereto, and their
respective successors and assigns. The provisions of this Agreement shall be
severable and the illegality, unenforceability or invalidity of any provision of
this Agreement shall not affect or impair the remaining provisions hereof, and
each provision of this Agreement shall be construed to be valid and enforceable
to the full extent permitted by law. In any suit, action or proceeding arising
out of or in connection with this Agreement, the prevailing party shall be
entitled to receive an award of the reasonable related amount of attorneys' fees
and disbursements incurred by such party, including fees and disbursements on
appeal. This Agreement is a complete expression of all agreements of the parties
relating to the subject matter hereof, and all prior or contemporaneous oral or
written understandings or agreements shall be null and void except to the extent
set forth in this Agreement.

This Agreement cannot be amended orally, or by any course of conduct or dealing,
but only by a written agreement signed by the party to be charged therewith. All
notices required and allowed hereunder shall be in writing, and shall be deemed
given upon deposit in the Certified Mail, Return Receipt Requested, first-class
postage and registration fees prepaid, and correctly addressed to the party for
whom intended at its address set forth under its name below, or to such other
address as has been most recently specified by a party by one or more
counterparts, each of which shall constitute

                                       5
<PAGE>

one and the same agreement. All references to genders or number in this
Agreement shall be deemed interchangeably to have a masculine, feminine, neuter,
singular or plural meaning, as the sense of the context required.

If the foregoing confirms your understanding of our agreements, please so
indicate by signing in the space provided below and returning a signed copy to
us.

                                       Nabi

                                       5800 Park of Commerce Boulevard, N.W.
                                       Boca Raton, Florida 33487

                                       By: /s/ David J. Gury
                                           -------------------------------------
                                           David J. Gury
                                           Chief Executive Officer

Accepted and agreed:

/s/ Thomas H. McLain
--------------------------------
Thomas H. McLain
1617 SW 20th Ave
Boca Raton, Florida 33486

                                       6

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