GENVEC INC
S-1/A, EX-1.1, 2000-12-07
PHARMACEUTICAL PREPARATIONS
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                                                                     Exhibit 1.1

                                  GENVEC, INC.

                        4,000,000 SHARES OF COMMON STOCK

                             Underwriting Agreement


                                                      December __, 2000


J.P. Morgan Securities Inc.
UBS Warburg LLC
A.G. Edwards & Sons, Inc.
As Representatives of several
   underwriters listed in Schedule I
   hereto
c/o J.P. Morgan Securities Inc.
    60 Wall Street
    New York, New York  10260

Ladies and Gentlemen:

         GenVec, Inc., a Delaware corporation (the "COMPANY"), proposes to
issue and sell to the several Underwriters listed in Schedule I hereto (the
"UNDERWRITER"), for whom you are acting as representatives (the
"REPRESENTATIVES"), an aggregate of 4,000,000 shares of Common Stock, par
value $0.001 per share, of the Company (the "UNDERWRITTEN SHARES") and, for
the sole purpose of covering over-allotments in connection with the sale of
the Underwritten Shares, at the option of the Underwriters, up to an
additional 600,000 shares of Common Stock of the Company (the "OPTION
SHARES"). The Underwritten Shares and the Option Shares are herein referred
to as the "SHARES". The shares of Common Stock of the Company to be
outstanding after giving effect to the sale of the Shares are herein referred
to as the "STOCK".

         As part of the offering contemplated by this Agreement, J.P. Morgan
Securities Inc. (the "DESIGNATED UNDERWRITER") has agreed to reserve out of the
Underwritten Shares purchased by them under this Agreement, up to five percent
or 200,000 shares, for sale to the Company's directors, officers, employees and
other parties associated with the Company (collectively, "PARTICIPANTS"), as set
forth in the Prospectus (as defined herein) under the heading "Underwriting"
(the "DIRECTED SHARE PROGRAM"). The Underwritten Shares to be sold by the


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Designated Underwriter pursuant to the Directed Share Program (the "DIRECTED
SHARES") will be sold by the Designated Underwriter pursuant to this
Agreement at the public offering price. Any Directed Shares not orally
confirmed for purchase by a Participant by the end of the business day on
which this Agreement is executed will be offered to the public by the
Underwriters as set forth in the Prospectus.

         The Company has prepared and filed with the Securities and Exchange
Commission (the "COMMISSION") in accordance with the provisions of the
Securities Act of 1933, as amended, and the rules and regulations of the
Commission thereunder (collectively, the "SECURITIES ACT"), a registration
statement, including a prospectus, relating to the Shares. The registration
statement as amended at the time when it shall become effective including
information (if any) deemed to be part of the registration statement at the
time of effectiveness pursuant to Rule 430A under the Securities Act, is
referred to in this Agreement as the "REGISTRATION STATEMENT", and the
prospectus in the form first used to confirm sales of Shares is referred to
in this Agreement as the "PROSPECTUS". If the Company has filed an
abbreviated registration statement pursuant to Rule 462(b) under the
Securities Act (the "RULE 462 REGISTRATION STATEMENT"), then any reference
herein to the term "Registration Statement" shall be deemed to include such
Rule 462 Registration Statement.

         The Company hereby agrees with the Underwriters as follows:

           1. The Company agrees to issue and sell the Underwritten Shares to
the several Underwriters as hereinafter provided, and each Underwriter, upon
the basis of the representations and warranties herein contained, but subject
to the conditions hereinafter stated, agrees to purchase, severally and not
jointly, from the Company the respective number of Underwritten Shares set
forth opposite such Underwriter's name in Schedule I hereto at a purchase
price per share (the "PURCHASE PRICE") of $______.

         In addition, the Company agrees to issue and sell the Option Shares
to the several Underwriters as hereinafter provided, and the Underwriters on
the basis of the representations and warranties herein contained, but subject
to the conditions hereinafter stated, shall have the option to purchase,
severally and not jointly, from the Company up to an aggregate of 600,000
Option Shares at the Purchase Price, for the sole purpose of covering
over-allotments (if any) in the sale of Underwritten Shares by the several
Underwriters.

         If any Option Shares are to be purchased, the number of Option Shares
to be purchased by each Underwriter shall be the number of Option Shares which
bears the same ratio to the aggregate number of Option Shares being purchased as


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the number of Underwritten Shares set forth opposite the name of such
Underwriter in Schedule I hereto (or such number increased as set forth in
Section 9 hereof) bears to the aggregate number of Underwritten Shares being
purchased from the Company by the several Underwriters, subject, however, to
such adjustments to eliminate any fractional Shares as the Representatives in
their sole discretion shall make.

         The Underwriters may exercise the option to purchase the Option
Shares at any time (but not more than once) on or before the thirtieth day
following the date of this Agreement, by written notice from the
Representatives to the Company. Such notice shall set forth the aggregate
number of Option Shares as to which the option is being exercised and the
date and time when the Option Shares are to be delivered and paid for which
may be the same date and time as the Closing Date (as hereinafter defined)
but shall not be earlier than the Closing Date nor later than the tenth full
Business Day (as hereinafter defined) after the date of such notice (unless
such time and date are postponed in accordance with the provisions of Section
9 hereof). Any such notice shall be given at least two Business Days prior to
the date and time of delivery specified therein.

           2. The Company understands that the Underwriters intend (i) to
make a public offering of the Shares as soon after (A) the Registration
Statement has become effective and (B) the parties hereto have executed and
delivered this Agreement, as in the judgment of the Representatives is
advisable and (ii) initially to offer the Shares upon the terms set forth in
the Prospectus.

           3. Payment for the Shares shall be made by wire transfer in
immediately available funds to the account specified by the Company to the
Representatives in the case of the Underwritten Shares, on December __, 2000,
or at such other time on the same or such other date, not later than the
fifth Business Day thereafter, as the Representatives and the Company may
agree upon in writing or, in the case of the Option Shares, on the date and
time specified by the Representatives in the written notice of the
Underwriters' election to purchase such Option Shares. The time and date of
such payment for the Underwritten Shares is referred to herein as the
"CLOSING DATE" and the time and date for such payment for the Option Shares,
if other than the Closing Date, are herein referred to as the "ADDITIONAL
CLOSING DATE". As used herein, the term "BUSINESS DAY" means any day other
than a day on which banks are permitted or required to be closed in New York
City.

         Payment for the Shares to be purchased on the Closing Date or the
Additional Closing Date, as the case may be, shall be made against delivery
to the Representatives for the respective accounts of the several
Underwriters of the Shares to be purchased on such date registered in such
names and in such


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denominations as the Representatives shall request in writing not later than
two full Business Days prior to the Closing Date or the Additional Closing
Date, as the case may be, with any transfer taxes payable in connection with
the transfer to the Underwriters of the Shares duly paid by the Company. The
certificates for the Shares will be made available for inspection and
packaging by the Representatives at the office of J.P. Morgan Securities Inc.
set forth above not later than 1:00 P.M., New York City time, on the Business
Day prior to the Closing Date or the Additional Closing Date, as the case may
be.

           4. The Company represents and warrants to each Underwriter that:

                  (a) no order preventing or suspending the use of any
         preliminary prospectus has been issued by the Commission, and each
         preliminary prospectus filed as part of the Registration Statement as
         originally filed or as part of any amendment thereto, or filed pursuant
         to Rule 424 under the Securities Act, complied when so filed in all
         material respects with the Securities Act, and did not contain an
         untrue statement of a material fact or omit to state a material fact
         required to be stated therein or necessary to make the statements
         therein, in the light of the circumstances under which they were made,
         not misleading; PROVIDED that this representation and warranty shall
         not apply to any statements or omissions made in reliance upon and in
         conformity with information relating to any Underwriter furnished to
         the Company in writing by such Underwriter through the Representatives
         expressly for use therein;

                  (b) no stop order suspending the effectiveness of the
         Registration Statement has been issued and no proceeding for that
         purpose has been instituted or, to the knowledge of the Company,
         threatened by the Commission; and the Registration Statement and
         Prospectus (as amended or supplemented if the Company shall have
         furnished any amendments or supplements thereto) comply, or will
         comply, as the case may be, in all material respects with the
         Securities Act and do not and will not, as of the applicable effective
         date as to the Registration Statement and any amendment thereto and as
         of the date of the Prospectus and any amendment or supplement thereto,
         contain any untrue statement of a material fact or omit to state any
         material fact required to be stated therein or necessary to make the
         statements therein not misleading, and the Prospectus, as amended or
         supplemented, if applicable, at the Closing Date or Additional Closing
         Date, as the case may be, will not contain any untrue statement of a
         material fact or omit to state a material fact necessary to make the
         statements therein, in light of the circumstances under which they were
         made, not misleading; except that the foregoing representations and
         warranties shall not apply to statements or omissions


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         in the Registration Statement or the Prospectus made in reliance
         upon and in conformity with information relating to any Underwriter
         furnished to the Company in writing by such Underwriter through the
         Representatives expressly for use therein;

                  (c) the financial statements, and the related notes thereto,
         included in the Registration Statement and the Prospectus present
         fairly in all material respects the financial position of the Company
         as of the dates indicated and the results of its operations and changes
         in its consolidated cash flows for the periods specified; said
         financial statements have been prepared in conformity with generally
         accepted accounting principles applied on a consistent basis, and the
         supporting schedules, if any, included in the Registration Statement
         present fairly in all material respects the information required to be
         stated therein;

                  (d) since the respective dates as of which information is
         given in the Registration Statement and the Prospectus, there has not
         been any change in the capital stock or long-term debt of the Company,
         or any material adverse change, or any development involving a
         prospective material adverse change, in or affecting the business,
         prospects, management, financial position, stockholders' equity or
         results of operations of the Company, otherwise than as set forth or
         contemplated in the Prospectus (a "MATERIAL ADVERSE CHANGE"); and
         except as set forth or contemplated in the Prospectus the Company has
         not entered into any transaction or agreement (whether or not in the
         ordinary course of business) material to the Company;

                  (e) the Company has been duly incorporated and is validly
         existing as a corporation in good standing under the laws of its
         jurisdiction of incorporation, with corporate power and authority to
         own its properties and conduct its business as described in the
         Prospectus, and has been duly qualified as a foreign corporation for
         the transaction of business and is in good standing under the laws of
         each other jurisdiction in which it owns or leases properties, or
         conducts any business, so as to require such qualification, other than
         where the failure to be so qualified or in good standing would not have
         a material adverse effect on the business, prospects, management,
         financial position, stockholders' equity or results of operations of
         the Company (a "MATERIAL ADVERSE EFFECT");

                  (f)    the Company has no subsidiaries;

                  (g) this Agreement has been duly authorized, executed and
         delivered by the Company;


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                  (h) upon the filing of an amended and restated certificate of
         incorporation with the Secretary of State of the State of Delaware, the
         Company will have an authorized capitalization as set forth in the
         Prospectus and such authorized capital stock will conform as to legal
         matters to the description thereof set forth in the Prospectus, and all
         of the outstanding shares of capital stock of the Company have been
         duly authorized and validly issued, are fully-paid and non-assessable
         and are not subject to any pre-emptive or similar rights; and, except
         as described in or expressly contemplated by the Prospectus, there are
         no outstanding rights (including, without limitation, pre-emptive
         rights), warrants or options to acquire, or instruments convertible
         into or exchangeable for, any shares of capital stock or other equity
         interest in the Company, or any contract, commitment, agreement,
         understanding or arrangement of any kind relating to the issuance of
         any capital stock of the Company, any such convertible or exchangeable
         securities or any such rights, warrants or options;

                  (i) the Shares to be issued and sold by the Company hereunder
         have been duly authorized, and, when issued and delivered to and paid
         for by the Underwriters in accordance with the terms of this Agreement,
         will be duly issued and will be fully paid and non-assessable and will
         conform in all material respects to the descriptions thereof in the
         Prospectus; and the issuance of the Shares is not subject to any
         preemptive or similar rights;

                  (j) the Company is not, and with the giving of notice or lapse
         of time or both will not be, in violation of or in default under, its
         certificate of incorporation or by-laws or any indenture, mortgage,
         deed of trust, loan agreement or other agreement or instrument to which
         the Company is a party or by which it or any of its properties is
         bound, except for violations and defaults which individually and in the
         aggregate are not material to the Company; the issue and sale of the
         Shares and the performance by the Company of its obligations under this
         Agreement and the consummation of the transactions contemplated herein
         will not conflict with or result in a breach of any of the terms or
         provisions of, or constitute a default under, any indenture, mortgage,
         deed of trust, loan agreement or other agreement or instrument to which
         the Company is a party or by which the Company is bound or to which any
         of the property or assets of the Company is subject, nor will any such
         action result in any violation of the provisions of the certificate of
         incorporation or the by-laws of the Company or any applicable law or
         statute or any order, rule or regulation of any court or governmental
         agency or body having jurisdiction over the Company or


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         any of its properties; and no consent, approval, authorization,
         order, license, registration or qualification of or with any such
         court or governmental agency or body is required for the issue and
         sale of the Shares or the consummation by the Company of the
         transactions contemplated by this Agreement, except such consents,
         approvals, authorizations, orders, licenses, registrations or
         qualifications as have been obtained under the Securities Act and
         as may be required under state securities or Blue Sky Laws in
         connection with the purchase and distribution of the Shares by the
         Underwriters;

                  (k) other than as set forth or contemplated in the Prospectus,
         there are no legal or governmental investigations, actions, suits or
         proceedings pending or, to the Company's knowledge, threatened against
         or affecting the Company or any of its properties or to which the
         Company is or may be a party or to which any property of the Company is
         or may be the subject which, if determined adversely to the Company,
         could individually or in the aggregate, reasonably be expected to have
         a Material Adverse Effect and, to the Company's knowledge, no such
         proceedings are threatened or contemplated by governmental authorities
         or threatened by others; and there are no statutes, regulations,
         contracts or other documents that are required to be described in the
         Registration Statement or Prospectus or to be filed as exhibits to the
         Registration Statement that are not described or filed as required;

                  (l) the Company owns no real property and has good title to
         all personal property owned by it, in each case free and clear of all
         liens, encumbrances and defects except such as are described or
         referred to in the Prospectus or such as do not materially affect the
         value of such property and do not interfere with the use made or
         proposed to be made of such property by the Company; and any real
         property and buildings held under lease by the Company are held by it
         under valid, existing and enforceable leases with such exceptions as
         are not material and do not interfere with the use made or proposed to
         be made of such property and buildings by the Company;

                  (m) no relationship, direct or indirect, exists between or
         among the Company on the one hand, and the directors, officers,
         stockholders, customers or suppliers of the Company on the other hand,
         which is required by the Securities Act to be described in the
         Registration Statement and the Prospectus which is not so described;

                  (n) no person has the right to require the Company to register
         any securities for offering and sale under the Securities Act by reason


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         of the filing of the Registration Statement with the Commission or the
         issue and sale of the Shares, except for rights that have been waived;

                  (o) the Company is not and, after giving effect to the
         offering and sale of the Shares, will not be an "investment company" or
         an entity "controlled" by an "investment company", as such terms are
         defined in the Investment Company Act of 1940, as amended (the
         "INVESTMENT COMPANY ACT");

                  (p) KPMG LLP, independent auditors, who have certified certain
         financial statements of the Company, are independent public accountants
         with respect to the Company as required by the Securities Act;

                  (q) the Company has filed all federal, state, local and
         foreign tax returns which have been required to be filed and has paid
         all taxes shown thereon and all assessments received by it to the
         extent that such taxes have become due and are not being contested in
         good faith, except where such failure to file tax returns or pay such
         taxes and assessments would not, individually or in the aggregate,
         reasonably be expected to have a Material Adverse Effect; and there is
         no tax deficiency which has been or might reasonably be expected to be
         asserted or threatened against the Company which would reasonably be
         expected to have a Material Adverse Effect;

                   (r) the Company has not taken nor will it take, directly or
         indirectly, any action designed to, or that might be reasonably
         expected to, cause or result in stabilization or manipulation of the
         price of the Common Stock;

                   (s) the Company owns, possesses or has obtained all licenses,
         permits, certificates, consents, orders, approvals and other
         authorizations from, and has made all declarations and filings with,
         all federal, state, local and other governmental authorities (including
         foreign regulatory agencies), all self-regulatory organizations and all
         courts and other tribunals, domestic or foreign, necessary to own or
         lease, as the case may be, and to operate its properties and to carry
         on its business as conducted as of the date hereof, except where such
         failure to make declarations and filings would not, individually or in
         the aggregate, reasonably be expected to have a Material Adverse
         Effect, and the Company has not received any actual notice of any
         proceeding relating to revocation or modification of any such license,
         permit, certificate, consent, order, approval or other authorization,
         except as described in the Registration Statement and the Prospectus;
         and the Company is in compliance in all material respects with


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         all laws and regulations relating to the conduct of its business as
         conducted as of the date hereof;

                  (t) there are no existing or, to the best knowledge of the
         Company, threatened labor disputes with the employees of the Company
         which could reasonably be expected to have a Material Adverse Effect;

                  (u) the Company (i) is in compliance with any and all
         applicable foreign, federal, state and local laws and regulations
         relating to the protection of human health and safety, the environment
         or hazardous or toxic substances or wastes, pollutants or contaminants
         ("ENVIRONMENTAL LAWS"), (ii) has received all permits, licenses or
         other approvals required of them under applicable Environmental Laws to
         conduct its businesses and (iii) is in compliance with all terms and
         conditions of any such permit, license or approval, except where such
         noncompliance with Environmental Laws, failure to receive required
         permits, licenses or other approvals or failure to comply with the
         terms and conditions of such permits, licenses or approvals would not,
         singly or in the aggregate, have a Material Adverse Effect;

                  (v) each employee benefit plan, within the meaning of Section
         3(3) of the Employee Retirement Income Security Act of 1974, as
         amended, ("ERISA") that is maintained, administered or contributed to
         by the Company or any of its affiliates for employees or former
         employees of the Company and its affiliates has been maintained in
         compliance with its terms and the requirements of any applicable
         statutes, orders, rules and regulations, including but not limited to
         ERISA and the Internal Revenue Code of 1986, as amended, ("CODE"); no
         prohibited transaction, within the meaning of Section 406 of ERISA or
         Section 4975 of the Code has occurred with respect to any such plan
         excluding transactions effected pursuant to a statutory or
         administrative exemption. For any such plan which is subject to the
         funding rules of Section 412 of the Code or Section 302 of ERISA, no
         "accumulated funding deficiency" as defined in Section 412 of the Code
         has been incurred, whether or not waived, and the fair market value of
         the assets of each such plan (excluding for these purposes accrued but
         unpaid contributions) exceeded the present value of all benefits
         accrued under such plan determined using reasonable actuarial
         assumptions;

                  (w) except as described in the Prospectus, the Company owns,
         is licensed to use or otherwise possesses adequate right to use the
         patents, patent rights, licenses, inventions, trademarks, service
         marks, trade names, copyrights and know-how, including trade secrets
         and other unpatented


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         and/or unpatentable proprietary or confidential information,
         systems, processes or procedures (collectively, the "INTELLECTUAL
         PROPERTY") reasonably necessary to carry on the business conducted
         by it, except to the extent that the failure to own, be licensed to
         use or otherwise possess adequate rights to use such Intellectual
         Property would not reasonably be expected to have a Material
         Adverse Effect; except as described in the Prospectus, the Company
         has not received any notice of infringement of or conflict with,
         and the Company has no knowledge of any infringement of or conflict
         with, asserted rights of others with respect to its Intellectual
         Property which could reasonably be expected to result in a Material
         Adverse Effect; except as described in the Prospectus, the
         discoveries, inventions, products or processes of the Company
         referred to in the Registration Statement and the Prospectus do
         not, to the knowledge of the Company, infringe or conflict with any
         right or patent of any third party, or any discovery, invention,
         product or process which is the subject of a patent application
         filed by any third party, which infringement or conflict could
         reasonably be expected to have a Material Adverse Effect; except as
         described in the Prospectus, the Company is not obligated to pay a
         royalty, grant a license or provide other consideration to any
         third party in connection with its patents, patent rights,
         licenses, inventions, trademarks, service marks, trade names,
         copyrights and know-how; and no third party, including any academic
         or governmental organization, possesses rights to the Intellectual
         Property which, if exercised would reasonably be expected to have a
         Material Adverse Effect;

                  (x) since the respective dates as of which information is
         given in the Registration Statement and the Prospectus, the studies,
         tests and preclinical and clinical trials conducted by or on behalf of
         the Company that are described in the Registration Statement and the
         Prospectus were and, if still pending, are being conducted in all
         material respects in accordance with experimental protocols, procedures
         and controls pursuant to, where applicable, accepted professional
         scientific standards; the descriptions of the results of such studies,
         tests and trials contained in the Registration Statement and the
         Prospectus are accurate in all material respects; the Company has not
         received any notices or correspondence from the United States Food and
         Drug Administration (the "FDA") or any foreign, state or local
         governmental body exercising comparable authority requiring the
         termination, suspension or material modification of any studies, tests
         or preclinical or clinical trials conducted by or on behalf of the
         Company which termination, suspension or material modification would
         reasonably be expected to have a Material Adverse Effect;


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                  (y) the statistical and market-related data included in the
         Registration Statement and the Prospectus are based on or derived from
         sources which are believed by the Company to be reliable;

                  (z) the Company carries, or is covered by, insurance in such
         amounts and covering such risks as it reasonably believes in the
         judgment of its management is adequate for the conduct of its business
         and the value of its properties and as is customary for companies
         engaged in similar businesses in similar industries;

                 (aa) the Company maintains a system of internal accounting
         sufficient to provide reasonable assurance that (A) transactions are
         executed in accordance with management's general or specific
         authorizations; (B) transactions are recorded as necessary to permit
         preparation of financial statements in conformity with generally
         accepted accounting principles and to maintain asset accountability;
         (C) access to assets is permitted only in accordance with management's
         general or specific authorization; and (D) the recorded accountability
         for assets is compared with the existing assets at reasonable intervals
         and appropriate action is taken with respect to any differences;

                 (bb) (i) the Registration Statement, the Prospectus and any
         preliminary prospectus comply, and any further amendments or
         supplements thereto will comply, with any applicable laws or
         regulations of foreign jurisdictions in which the Prospectus or any
         preliminary prospectus, as amended or supplemented, if applicable, are
         distributed in connection with the Directed Share Program, and (ii) no
         authorization, approval, consent, license, order, registration or
         qualification of or with any government, governmental instrumentality
         or court, other than such as have been obtained, is necessary under the
         securities laws and regulations of foreign jurisdictions in which the
         Directed Shares are offered outside the United States; and

                 (cc) the Company has not offered, or caused the Underwriters to
         offer, any Shares to any person pursuant to the Directed Share Program
         with the specific intent to unlawfully influence (i) a customer or
         supplier of the Company to alter the customer's or supplier's level or
         type of business with the Company or (ii) a trade journalist or
         publication to write or publish favorable information about the Company
         or its products.

         5. The Company covenants and agrees with each of the several
Underwriters as follows:



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                  (a) to use its best efforts to cause the Registration
         Statement to become effective at the earliest possible time and, if
         required, to file the final Prospectus with the Commission within the
         time periods specified by Rule 424(b) and Rule 430A under the
         Securities Act and to furnish copies of the Prospectus to the
         Underwriters in New York City prior to 10:00 a.m., New York City time,
         on the Business Day next succeeding the date of this Agreement in such
         quantities as the Representatives may reasonably request;

                  (b) to deliver, at the expense of the Company, to the
         Representatives four signed copies of the Registration Statement (as
         originally filed) and each amendment thereto, in each case including
         exhibits and to each other Underwriter a conformed copy of the
         Registration Statement (as originally filed) and each amendment
         thereto, in each case without exhibits and, during the period mentioned
         in Section 5(e) below, to each of the Underwriters as many copies of
         the Prospectus (including all amendments and supplements thereto) as
         the Representatives may reasonably request;

                  (c) before filing any amendment or supplement to the
         Registration Statement or the Prospectus, whether before or after the
         time the Registration Statement becomes effective, to furnish to the
         Representatives a copy of the proposed amendment or supplement for
         review and not to file any such proposed amendment or supplement to
         which the Representatives reasonably object;

                  (d) to advise the Representatives promptly, and to confirm
         such advice in writing (i) when the Registration Statement has become
         effective, (ii) when any amendment to the Registration Statement has
         been filed or becomes effective, (iii) when any supplement to the
         Prospectus or any amended Prospectus has been filed and to furnish the
         Representatives with copies thereof, (iv) of any request by the
         Commission for any amendment to the Registration Statement or any
         amendment or supplement to the Prospectus or for any additional
         information, (v) of the issuance by the Commission of any stop order
         suspending the effectiveness of the Registration Statement or of any
         order preventing or suspending the use of any preliminary prospectus or
         the Prospectus or the initiation or threatening of any proceeding for
         that purpose, (vi) of the occurrence of any event, within the period
         referenced in Section 5(e) below, as a result of which the Prospectus
         as then amended or supplemented would include an untrue statement of a
         material fact or omit to state any material fact necessary in order to
         make the statements therein, in the light of the circumstances when the
         Prospectus is delivered to a



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<PAGE>

         purchaser, not misleading, and (vii) of the receipt by the Company
         of any notification with respect to any suspension of the
         qualification of the Shares for offer and sale in any jurisdiction
         or the initiation or threatening of any proceeding for such
         purpose; and to use commercially reasonable efforts to prevent the
         issuance of any such stop order, or of any order preventing or
         suspending the use of any preliminary prospectus or the Prospectus,
         or of any order suspending any such qualification of the shares, or
         notification of any such order thereof and, if issued, to obtain as
         soon as possible the withdrawal thereof;

                  (e) if, during such period of time after the first date of the
         public offering of the Shares as in the opinion of counsel for the
         Underwriters a prospectus relating to the Shares is required by law to
         be delivered in connection with sales by the Underwriters or any
         dealer, any event shall occur as a result of which it is necessary to
         amend or supplement the Prospectus in order to make the statements
         therein, in the light of the circumstances when the Prospectus is
         delivered to a purchaser, not misleading, or if it is necessary to
         amend or supplement the Prospectus to comply with law, forthwith to
         prepare and furnish, at the expense of the Company, to the Underwriters
         and to the dealers (whose names and addresses the Representatives will
         furnish to the Company) to which Shares may have been sold by the
         Representatives on behalf of the Underwriters and to any other dealers
         upon request, such amendments or supplements to the Prospectus as may
         be necessary so that the statements in the Prospectus as so amended or
         supplemented will not, in the light of the circumstances when the
         Prospectus is delivered to a purchaser, be misleading or so that the
         Prospectus will comply with law;

                  (f) to endeavor to qualify the Shares for offer and sale under
         the securities or Blue Sky laws of such jurisdictions as the
         Representatives shall reasonably request and to continue such
         qualification in effect so long as reasonably required for distribution
         of the Shares; PROVIDED that the Company shall not be required to file
         a general consent to service of process, to register as a broker or
         dealer, or to expose itself to taxation, in any jurisdiction;

                  (g) to make generally available to its security holders and to
         the Representatives as soon as practicable an earnings statement
         covering a period of at least twelve months beginning with the first
         fiscal quarter of the Company occurring after the effective date of the
         Registration Statement, which shall satisfy the provisions of Section
         11(a) of the Securities Act and Rule 158 of the Commission promulgated
         thereunder;



                                         13


<PAGE>



                  (h) during the period of three years after the date of this
         Agreement, to furnish to the Representatives copies of all reports or
         other communications (financial or other) furnished to holders of the
         Shares, and copies of any reports and financial statements furnished to
         or filed with the Commission or any national securities exchange;

                  (i) for a period of 180 days after the date of the initial
         public offering of the Shares not to (i) offer, pledge, announce the
         intention to sell, sell, contract to sell, sell any option or contract
         to purchase, purchase any option or contract to sell, grant any option,
         right or warrant to purchase or otherwise transfer or dispose of,
         directly or indirectly, any shares of Stock or any securities of the
         Company which are substantially similar to the Common Stock, including,
         but not limited to, any securities convertible into or exercisable or
         exchangeable for, or that represent the right to receive, Stock or any
         such substantially similar securities (including, but not limited to,
         any securities which may be issued upon exercise of a stock option or
         warrant) or (ii) enter into any swap or other agreement that transfers,
         in whole or in part, any of the economic consequences of ownership of
         the Stock, whether any such transaction described in clause (i) or (ii)
         above is to be settled by delivery of Stock or such other securities,
         in cash or otherwise without the prior written consent of the
         Representatives, other than the Shares to be sold hereunder and any
         shares of Stock of the Company issued upon the exercise of options
         granted or to be granted under the Company's employee or director stock
         plans existing on the date of or described in the Prospectus or shares
         of Stock issued upon exercise of warrants existing on the date of the
         Prospectus;

                  (j) to use the net proceeds received by the Company from the
         sale of the Shares pursuant to this Agreement in the manner specified
         in the Prospectus under the caption "Use of Proceeds";

                  (k) to use its best efforts to list for quotation the Shares
         on the National Association of Securities Dealers Automated Quotations
         National Market (the "NASDAQ NATIONAL MARKET");

                  (l) whether or not the transactions contemplated in this
         Agreement are consummated or this Agreement is terminated, to pay or
         cause to be paid all costs and expenses incident to the performance of
         its obligations hereunder, including without limiting the generality of
         the foregoing, all costs and expenses (i) incident to the preparation,
         issuance, execution and delivery of the Shares, (ii) incident to the
         preparation, printing and filing under the Securities Act of the
         Registration Statement,




                                         14


<PAGE>


         the Prospectus and any preliminary prospectus (including in each
         case all exhibits, amendments and supplements thereto), (iii)
         incurred in connection with the registration or qualification of
         the Shares under the laws of such jurisdictions as the
         Representatives may designate (including fees of counsel for the
         Underwriters and its disbursements), (iv) in connection with the
         listing of the Shares on the Nasdaq National Market, (v) related to
         the filing with, and clearance of the offering by, the National
         Association of Securities Dealers, Inc. (including fees of counsel
         for the Underwriters and its disbursements), (vi) in connection
         with the printing (including word processing and duplication costs)
         and delivery of this Agreement, the Preliminary and Supplemental
         Blue Sky Memoranda and the furnishing to the Underwriters and
         dealers of copies of the Registration Statement and the Prospectus,
         including mailing and shipping, as herein provided, (vii) any
         expenses incurred by the Company in connection with a "road show"
         presentation to potential investors, (viii) the cost of preparing
         stock certificates and (ix) the cost and charges of any transfer
         agent and any registrar; PROVIDED HOWEVER, that the Company's
         obligation for fees of counsel for the Underwriters and its
         disbursements described in clauses (iii) and (v) shall not exceed
         $25,000 in the aggregate;

                  (m) in connection with the Directed Share Program, to ensure
         that the Directed Shares will be restricted to the extent required by
         the National Association of Securities Dealers, Inc. (the "NASD") or
         the NASD rules from sale, transfer, assignment, pledge or hypothecation
         for a period of three months following the date of the effectiveness of
         the Registration Statement. The Designated Underwriter will notify the
         Company as to which Participants will need to be so restricted. The
         Company will direct the transfer agent to place stop transfer
         restrictions upon such securities for such period of time;

                  (n) to pay all reasonable fees and disbursements of counsel
         incurred by the Underwriters in connection with the Directed Share
         Program and stamp duties, similar taxes or duties or other taxes, if
         any, incurred by the Underwriters in connection with the Directed Share
         Program; PROVIDED HOWEVER, that the Company's obligation for any such
         fees and disbursements of counsel shall not exceed $10,000; and

                  (o) to comply with all applicable securities and other
         applicable laws, rules and regulations in each foreign jurisdiction in
         which the Directed Shares are offered in connection with the Directed
         Share Program.



                                         15


<PAGE>



           6. The several obligations of the Underwriters hereunder to purchase
the Shares on the Closing Date or the Additional Closing Date, as the case may
be, are subject to the performance by the Company of its obligations hereunder
and to the following additional conditions:

                  (a) the Registration Statement shall have become effective (or
         if a post-effective amendment is required to be filed under the
         Securities Act, such post-effective amendment shall have become
         effective) not later than 5:00 P.M., New York City time, on the date
         hereof; and no stop order suspending the effectiveness of the
         Registration Statement or any post-effective amendment shall be in
         effect, and no proceedings for such purpose shall be pending before or
         threatened by the Commission; the Prospectus shall have been filed with
         the Commission pursuant to Rule 424(b) within the applicable time
         period prescribed for such filing by the rules and regulations under
         the Securities Act and in accordance with Section 5(a) hereof; and all
         requests for additional information shall have been complied with to
         the satisfaction of the Representatives;

                  (b) the representations and warranties of the Company
         contained herein are true and correct on and as of the Closing Date or
         the Additional Closing Date, as the case may be, as if made on and as
         of the Closing Date or the Additional Closing Date, as the case may be,
         and the Company shall have complied with all agreements and all
         conditions on its part to be performed or satisfied hereunder at or
         prior to the Closing Date or the Additional Closing Date, as the case
         may be;

                  (c) subsequent to the execution and delivery of this Agreement
         and prior to the Closing Date or the Additional Closing Date, as the
         case may be, there shall not have occurred any downgrading, nor shall
         any notice have been given of (i) any downgrading, (ii) any intended or
         potential downgrading or (iii) any review or possible change that does
         not indicate an improvement, in the rating accorded any securities of
         or guaranteed by the Company by any "nationally recognized statistical
         rating organization", as such term is defined for purposes of Rule
         436(g)(2) under the Securities Act;

                  (d) since the respective dates as of which information is
         given in the Prospectus there shall not have been any change in the
         capital stock or long-term debt of the Company or any Material Adverse
         Change, or any development involving a prospective Material Adverse
         Change, otherwise than as set forth or contemplated in the Prospectus,
         the effect of which in the judgment of the Representatives makes it
         impracticable or inadvisable to proceed with the public offering or the
         delivery of the Shares on the



                                         16


<PAGE>


         Closing Date or the Additional Closing Date, as the case may be, on
         the terms and in the manner contemplated in the Prospectus; and the
         Company has not sustained since the date of the latest audited
         financial statements included in the Prospectus any material loss
         or interference with its business from fire, explosion, flood or
         other calamity, whether or not covered by insurance, or from any
         labor dispute or court or governmental action, order or decree,
         otherwise than as set forth or contemplated in the Prospectus;

                  (e) the Representatives shall have received on and as of the
         Closing Date or the Additional Closing Date, as the case may be, a
         certificate of an executive officer of the Company, with specific
         knowledge about the Company's financial matters, satisfactory to the
         Representatives to the effect set forth in Sections 6(a), 6(b), 6(c)
         and 6(d) (with respect to the respective representations, warranties,
         agreements and conditions of the Company) and to the further effect
         that there has not occurred any Material Adverse Change, or any
         development involving a prospective Material Adverse Change, from that
         set forth or contemplated in the Registration Statement;

                  (f) Arnold & Porter, special counsel for the Company, shall
         have furnished to the Representatives their written opinion, dated the
         Closing Date or the Additional Closing Date, as the case may be, in
         form and substance satisfactory to the Representatives, to the effect
         that:

                           (i) the Company is validly existing as a corporation
                  in good standing under the laws of the state of Delaware, with
                  corporate power and authority to own its properties and
                  conduct its business as described in the Prospectus;

                          (ii) the Company has been duly qualified as a foreign
                  corporation for the transaction of business and is in good
                  standing under the laws of Maryland;

                         (iii) this Agreement has been duly authorized, executed
                  and delivered by the Company;

                          (iv) the authorized capital stock of the Company
                  conforms in all material respects as to legal matters to the
                  description thereof contained in the Prospectus;

                           (v) the Shares to be issued and sold by the Company
                  hereunder have been duly authorized, and when delivered to and




                                         17


<PAGE>


                  paid for by the Underwriters in accordance with the terms of
                  this Agreement, will be validly issued, fully paid and
                  non-assessable and the issuance of the Shares is not subject
                  to any preemptive or, to our knowledge, similar rights;

                          (vi) the statements in the Prospectus under "Business
                  - Strategic Alliances - Our Collaboration with the
                  Warner-Lambert Company", "Business - Governmental Regulation",
                  "Management - Limitation of Directors' and Officers'
                  Liability", "Description of Capital Stock", "Shares Eligible
                  for Future Sale", and "Underwriting", and in the Registration
                  Statement in Item 14, insofar as such statements constitute a
                  summary of the terms of the Stock, legal matters or documents
                  referred to therein, accurately summarize the information
                  called for with respect to such terms, legal matters or
                  documents;

                         (vii) the Registration Statement and the Prospectus and
                  any amendments and supplements thereto (other than the
                  financial statements and related schedules and other financial
                  or statistical data therein, as to which such counsel need
                  express no opinion) comply as to form in all material respects
                  with the requirements of the Securities Act;

                        (viii) the issue and sale of the Shares being delivered
                  on the Closing Date or the Additional Closing Date, as the
                  case may be, and the performance by the Company of its
                  obligations under this Agreement and the consummation of the
                  transactions contemplated herein will not conflict with or
                  result in a breach of any of the terms or provisions of, or
                  constitute a default under, any agreement or instrument filed
                  as an exhibit to the Registration Statement, nor will any such
                  action result in any violation of the provisions of the
                  certificate of incorporation or the by-laws of the Company or
                  any applicable law or statute or, to the knowledge of such
                  counsel, any order, rule or regulation of any court or
                  governmental agency or body having jurisdiction over the
                  Company or any of its properties;

                          (ix) no consent, approval, authorization, order,
                  license, registration or qualification of or with any court or
                  governmental agency or body is required for the issue and sale
                  of the Shares or the consummation of the other transactions
                  contemplated by this Agreement, except such consents,
                  approvals, authorizations, orders, licenses, registrations or
                  qualifications as have been obtained or made under the
                  Securities Act and as may be required



                                         18

<PAGE>

                  under state securities or Blue Sky laws in connection
                  with the purchase and distribution of the Shares by the
                  Underwriters;

                            (x) the Company is not and, after giving effect to
                  the offering and sale of the Shares, will not be an
                  "investment company" or entity "controlled" by an "investment
                  company", as such terms are defined in the Investment Company
                  Act; and

                           (xi) the issuance of shares of Common Stock in the
                  amount of $5,000,000 to Warner-Lambert, Inc. in a private
                  placement to close concurrently with the Closing Date of the
                  initial public offering, pursuant to the terms and conditions
                  of the Stock Purchase Agreement dated as of July 21, 1997
                  between the Company and Warner-Lambert, Inc., will be exempt
                  from all registration requirements of the Securities Act and
                  applicable state securities laws;

         In rendering such opinions, such counsel may rely as to matters of
fact, to the extent such counsel deems proper, on certificates of responsible
officers of the Company and certificates or other written statements of
officials of jurisdictions having custody of documents respecting the
corporate existence or good standing of the Company. The opinion of such
counsel for the Company shall state that the opinion of any such other
counsel upon which they relied is in form satisfactory to such counsel and,
in such counsel's opinion, the Underwriters and they are justified in relying
thereon. Such counsel shall also separately deliver a letter stating that (i)
no facts have come to their attention that have caused them to believe that
the Registration Statement and the prospectus included therein (other than
the financial statements and related schedules and other financial or
statistical data therein, as to which such counsel need express no belief) at
the time the Registration Statement became effective contained any untrue
statement of a material fact or omitted to state a material fact required to
be stated therein or necessary to make the statements therein not misleading,
and the Prospectus, as amended or supplemented, if applicable, as of its date
and as of the Closing Date or the Additional Closing Date, as the case may
be, contained or contains any untrue statement of a material fact or omitted
or omits to state a material fact necessary in order to make the statements
therein, in the light of the circumstances under which they were made, not
misleading; (ii) to such counsel's knowledge, other than as set forth or
contemplated in the Registration Statement or Prospectus, there are no legal
proceedings pending or threatened or contemplated against the Company by
governmental authorities or others; and (iii) such counsel does not know of
any contracts or other documents of a character that are required to be
described in the Registration Statement or Prospectus or to be filed as
exhibits to the Registration Statement that are not described or filed as
required.


                                         19


<PAGE>

With respect to the matters to be covered above counsel may state
their opinion and belief is based upon their participation in the preparation
of the Registration Statement and the Prospectus and any amendment or
supplement thereto and review and discussion of the contents thereof but is
without independent check or verification except as specified.

         The opinion of Arnold & Porter described above shall be rendered to the
Underwriters at the request of the company and shall so state therein.

                  (g) Leydig Voit & Mayer, Ltd., counsel for the Company, shall
         have furnished to the Representatives their written opinion, dated the
         Closing Date or Additional Closing Date, as the case may be, in form
         and substance satisfactory to the Representatives, to the effect that:

                           (i) the statements in the Prospectus under "Risk
                  Factors - Risks Related to Our Industry - If we are unable to
                  adequately protect our intellectual property rights, our
                  competitors may be able to take advantage of our research and
                  development efforts to compete with us," "- If our potential
                  products conflict with intellectual property rights of
                  competitors, universities or others, then we may be prevented
                  from developing those product candidates," "- If our right to
                  use intellectual property we license from others is affected,
                  our ability to develop and commercialize our product
                  candidates may be harmed," and "Business - Patents and
                  Proprietary Rights" insofar as such statements constitute a
                  summary of the legal matters, documents or proceedings
                  referred to herein, fairly present the information called for
                  with respect thereto;

                          (ii) to the best knowledge of such counsel, after due
                  inquiry, except as described in the Prospectus, the Company
                  owns, possesses or has the right to use the Intellectual
                  Property employed by it in connection with the business
                  conducted by it as of the date hereof;

                         (iii) to the best knowledge of such counsel, after due
                  inquiry, except as described in the Prospectus, the Company
                  has not received any notice of infringement of or conflict
                  with, and such counsel has no knowledge of any infringement of
                  or conflict with, asserted rights of others with respect to
                  the Company's Intellectual Property which could reasonably be
                  expected to result in a material adverse effect on the
                  Company;


                                         20
<PAGE>


                          (iv) to the best knowledge of such counsel, after due
                  inquiry, except as described in the Prospectus, the
                  discoveries, inventions, products or processes of the Company
                  referred to in the Prospectus do not infringe or conflict with
                  any right or patent of any third party, or any discovery,
                  invention, product or process which is the subject of a patent
                  application filed by any third party;

                           (v) to the best knowledge of such counsel, after due
                  inquiry, except as described in the Prospectus, the Company is
                  not obligated to pay a royalty, grant a license or provide
                  other consideration to any third party in connection with its
                  patents, patent rights, licenses, inventions, trademarks,
                  service marks, trade names, copyrights and know-how;

                          (vi) to the best knowledge of such counsel, after due
                  inquiry, no third party, including any academic or
                  governmental organization, possesses rights to the Company's
                  Intellectual Property which, if exercised, could enable such
                  third party to develop products competitive with those of the
                  Company or could reasonably be expected to have a material
                  adverse effect on the Company;

                         (vii) based on the information brought to such
                  counsel's attention by the Company with respect to the
                  Company's investigation, if any, of the published literature
                  and patent references relating to the inventions claimed in
                  its patent applications, such counsel will disclose all
                  references known to it to the Patent and Trademark Office in
                  accordance with 37 C.F.R. Section 1.56; to the best of such
                  counsel's knowledge, all information submitted to the U.S.
                  Patent and Trademark Office in the relevant applications, and
                  in connection with the prosecution of the relevant
                  applications, was accurate; neither such counsel, nor to the
                  best of its knowledge, the Company, made any misrepresentation
                  or concealed any material information from the Patent and
                  Trademark office in any of such applications, or in connection
                  with the prosecution of such applications in the violation of
                  37 C.F.R. Section 1.56;

                        (viii) to the best knowledge of such counsel, after due
                  inquiry, there are no legal or governmental proceedings
                  pending (other than prosecution of the Company's patent
                  applications) relating to the Company, the claimed inventions
                  of the Company's patent or patent applications and no such
                  proceedings are


                                      21

<PAGE>

                  threatened or contemplated by governmental authorities or
                  others; and

                          (ix) such counsel shall state that no facts have come
                  to their attention to cause them to believe that (A) the
                  portions of the Registration Statement and the Prospectus
                  included therein under the captions "Risk Factors - Risks
                  Related to Our Industry - If we are unable to adequately
                  protect our intellectual property rights, our competitors may
                  be able to take advantage of our research and development
                  efforts to compete with us," " - If our potential products
                  conflict with intellectual property rights of competitors,
                  universities or others, then we may be prevented from
                  developing those product candidates," "- If our right to use
                  intellectual property we license from others is affected, our
                  ability to develop and commercialize our product candidates
                  may be harmed," and "Business - Patents and Proprietary
                  Rights" at the time the Registration Statement became
                  effective contained any untrue statement of a material fact or
                  omitted to state a material fact required to be stated therein
                  or necessary to make the statements therein not misleading;
                  and (B) the portions of the Prospectus under the captions
                  "Risk Factors C Risks Related to Our Industry - If we are
                  unable to adequately protect our intellectual property rights,
                  our competitors may be able to take advantage of our research
                  and development efforts to compete with us," "- If our
                  potential products conflict with intellectual property rights
                  of competitors, universities or others, then we may be
                  prevented from developing those product candidates," "- If our
                  right to use intellectual property we license from others is
                  affected, our ability to develop and commercialize our product
                  candidates may be harmed," and "Business - Patents and
                  Proprietary Rights" as of its date and as of the Closing Date
                  or the Additional Closing Date, as the case may be, contained
                  or contains any untrue statement of a material fact or omitted
                  or omits to state a material fact necessary in order to make
                  the statements therein, in light of the circumstances under
                  which they were made, not misleading.

         The opinion of Leydig Voit & Mayer, Ltd., described above shall be
rendered to the Underwriters at the request of the Company and shall so state
therein.

                  (h) on the effective date of the Registration Statement and
         the effective date of the most recently filed post-effective amendment
         to the Registration Statement and also on the Closing Date or
         Additional Closing


                                      22

<PAGE>

         Date, as the case may be, KPMG LLP shall have furnished to you
         letters, dated the respective dates of delivery thereof, in form and
         substance satisfactory to you, containing statements and information
         of the type customarily included in accountants' "comfort letters" to
         underwriters with respect to the financial statements and certain
         financial information contained in the Registration Statement and
         the Prospectus;

                  (i) the Representatives shall have received on and as of the
         Closing Date or Additional Closing Date, as the case may be, an opinion
         of Davis Polk & Wardwell, counsel to the Underwriters, with respect to
         the due authorization and valid issuance of the Shares, the
         Registration Statement, the Prospectus and other related matters as the
         Representatives may reasonably request, and such counsel shall have
         received such papers and information as they may reasonably request to
         enable them to pass upon such matters;

                  (j) the Shares to be delivered on the Closing Date or
         Additional Closing Date, as the case may be, shall have been approved
         for quotation on the Nasdaq National Market;

                  (k) on or prior to the Closing Date or Additional Closing
         Date, as the case may be, the Company shall have furnished to the
         Representatives such further certificates and documents as the
         Representatives shall reasonably request; and

                  (l) The "lock-up" agreements, each substantially in the form
         of Exhibit A hereto, between you and the shareholders, officers and
         directors of the Company relating to sales and certain other
         dispositions of shares of Stock or certain other securities, delivered
         to you on or before the date hereof, shall be in full force and effect
         on the Closing Date or Additional Closing Date, as the case may be,

           7. The Company agrees to indemnify and hold harmless each
Underwriter, each affiliate of any Underwriter which assists such Underwriter
in the distribution of the Shares and each person, if any, who controls any
Underwriter within the meaning of either Section 15 of the Securities Act or
Section 20 of the Securities Exchange Act of 1934, as amended (the "EXCHANGE
ACT"), from and against any and all losses, claims, damages and liabilities
(including, without limitation, the legal fees and other expenses incurred in
connection with any suit, action or proceeding or any claim asserted) caused
by any untrue statement or alleged untrue statement of a material fact
contained in the Registration Statement or the Prospectus (as amended or
supplemented if the Company shall have furnished any amendments or
supplements thereto) or any


                                      23

<PAGE>

preliminary prospectus, or caused by any omission or alleged omission to
state therein a material fact required to be stated therein or necessary to
make the statements therein not misleading, except insofar as such losses,
claims, damages or liabilities are caused by any untrue statement or omission
or alleged untrue statement or omission made in reliance upon and in
conformity with information relating to any Underwriter furnished to the
Company in writing by such Underwriter through the Representatives expressly
for use therein; PROVIDED HOWEVER, that the foregoing indemnity agreement
with respect to any preliminary prospectus shall not inure to the benefit of
any Underwriter (or affiliate of such Underwriter which assists such
Underwriter in the distribution of the Shares) from whom the persons
asserting any such losses, claims, damages or liabilities purchased Shares,
or any person controlling such Underwriter, if a copy of the Prospectus (as
then amended or supplemented if the Company shall have furnished any
amendments or supplements thereto) was not sent or given by or on behalf of
such Underwriter to such person, if required by law so to have been
delivered, at or prior to the written confirmation of the sale of the Shares
to such person, and if the Prospectus (as so amended or supplemented) would
have cured the defect giving rise to such loss, claim, damage or liability.

         Each Underwriter agrees, severally and not jointly, to indemnify and
hold harmless the Company, its directors, its officers who sign the
Registration Statement and each person who controls the Company within the
meaning of Section 15 of the Securities Act and Section 20 of the Exchange
Act to the same extent as the foregoing indemnity from the Company to each
Underwriter, but only with reference to information relating to such
Underwriter furnished to the Company in writing by such Underwriter through
the Representatives expressly for use in the Registration Statement, the
Prospectus, any amendment or supplement thereto, or any preliminary
prospectus.

         If any suit, action, proceeding (including any governmental or
regulatory investigation), claim or demand shall be brought or asserted
against any person in respect of which indemnity may be sought pursuant to
either of the two preceding paragraphs, such person (the "INDEMNIFIED
PERSON") shall promptly notify the person against whom such indemnity may be
sought (the "INDEMNIFYING PERSON") in writing, and the Indemnifying Person,
upon request of the Indemnified Person, shall retain counsel reasonably
satisfactory to the Indemnified Person to represent the Indemnified Person
and any others the Indemnifying Person may designate in such proceeding and
shall pay the reasonable fees and expenses of such counsel related to such
proceeding. In any such proceeding, any Indemnified Person shall have the
right to retain its own counsel, but the fees and expenses of such counsel
shall be at the expense of such Indemnified Person unless (i) the
Indemnifying Person and the Indemnified Person shall have mutually agreed to
the contrary, (ii) the Indemnifying Person


                                      24

<PAGE>

has failed within a reasonable time to retain counsel reasonably satisfactory
to the Indemnified Person or (iii) the named parties in any such proceeding
(including any impleaded parties) include both the Indemnifying Person and
the Indemnified Person and representation of both parties by the same counsel
would be inappropriate due to actual or potential differing interests between
them. It is understood that the Indemnifying Person shall not, in connection
with any proceeding or related proceeding in the same jurisdiction, be liable
for the fees and expenses of more than one separate firm (in addition to any
local counsel) for all Indemnified Persons, and that all such fees and
expenses shall be reimbursed as they are incurred. Any such separate firm for
the Underwriters, each affiliate of any Underwriter which assists such
Underwriter in the distribution of the Shares and such control persons of
Underwriters shall be designated in writing by J.P. Morgan Securities Inc.
and any such separate firm for the Company, its directors, its officers who
sign the Registration Statement and such control persons of the Company shall
be designated in writing by the Company. The Indemnifying Person shall not be
liable for any settlement of any proceeding effected without its written
consent, but if settled with such consent or if there be a final judgment for
the plaintiff, the Indemnifying Person agrees to indemnify any Indemnified
Person from and against any loss or liability by reason of such settlement or
judgment. Notwithstanding the foregoing sentence, if at any time an
Indemnified Person shall have requested an Indemnifying Person to reimburse
the Indemnified Person for fees and expenses of counsel as contemplated by
the second and third sentences of this paragraph, the Indemnifying Person
agrees that it shall be liable for any settlement of any proceeding effected
without its written consent if (i) such settlement is entered into more than
60 days after receipt by such Indemnifying Person of the aforesaid request
and (ii) such Indemnifying Person shall not have reimbursed the Indemnified
Person in accordance with such request prior to the date of such settlement.
No Indemnifying Person shall, without the prior written consent of the
Indemnified Person, effect any settlement of any pending or threatened
proceeding in respect of which any Indemnified Person is or could have been a
party and indemnity could have been sought hereunder by such Indemnified
Person, unless such settlement includes an unconditional release of such
Indemnified Person from all liability on claims that are the subject matter
of such proceeding.

         If the indemnification provided for in the first and second
paragraphs of this Section 7 is unavailable to an Indemnified Person or
insufficient in respect of any losses, claims, damages or liabilities
referred to therein, then each Indemnifying Person under such paragraph, in
lieu of indemnifying such Indemnified Person thereunder, shall contribute to
the amount paid or payable by such Indemnified Person as a result of such
losses, claims, damages or liabilities (i) in such proportion as is
appropriate to reflect the relative benefits received by the Company on the
one hand and the Underwriters on the other hand from the


                                      25

<PAGE>

offering of the Shares or (ii) if the allocation provided by clause (i) above
is not permitted by applicable law, in such proportion as is appropriate to
reflect not only the relative benefits referred to in clause (i) above but
also the relative fault of the Company on the one hand and the Underwriters
on the other hand in connection with the statements or omissions that
resulted in such losses, claims, damages or liabilities, as well as any other
relevant equitable considerations. The relative benefits received by the
Company on the one hand and the Underwriters on the other hand shall be
deemed to be in the same respective proportions as the net proceeds from the
offering (before deducting expenses) received by the Company and the total
underwriting discounts and the commissions received by the Underwriters, in
each case as set forth in the table on the cover of the Prospectus, bear to
the aggregate public offering price of the Shares. The relative fault of the
Company on the one hand and the Underwriters on the other hand shall be
determined by reference to, among other things, whether the untrue or alleged
untrue statement of a material fact or the omission or alleged omission to
state a material fact relates to information supplied by the Company by the
Underwriters and the parties' relative intent, knowledge, access to
information and opportunity to correct or prevent such statement or omission.

         The Company and the Underwriters agree that it would not be just and
equitable if contribution pursuant to this Section 7 were determined by PRO
RATA allocation (even if the Underwriters were treated as one entity for such
purposes) or by any other method of allocation that does not take account of
the equitable considerations referred to in the immediately preceding
paragraph. The amount paid or payable by an Indemnified Person as a result of
the losses, claims, damages and liabilities referred to in the immediately
preceding paragraph shall be deemed to include, subject to the limitations
set forth above, any legal or other expenses incurred by such Indemnified
Person in connection with investigating or defending any such action or
claim. Notwithstanding the provisions of this Section 7, in no event shall an
Underwriter be required to contribute any amount in excess of the amount by
which the total price at which the Shares underwritten by it and distributed
to the public were offered to the public exceeds the amount of any damages
that such Underwriter has otherwise been required to pay by reason of such
untrue or alleged untrue statement or omission or alleged omission. No person
guilty of fraudulent misrepresentation (within the meaning of Section 11(f)
of the Securities Act) shall be entitled to contribution from any person who
was not guilty of such fraudulent misrepresentation. The Underwriters'
obligations to contribute pursuant to this Section 7 are several in
proportion to the respective number of Shares set forth opposite their names
in Schedule I hereto, and not joint.


                                      26

<PAGE>

         The remedies provided for in this Section 7 are not exclusive and
shall not limit any rights or remedies which may otherwise be available to
any indemnified party at law or in equity.

         The indemnity and contribution agreements contained in this Section
7 and the representations and warranties of the Company set forth in this
Agreement shall remain operative and in full force and effect regardless of
(i) any termination of this Agreement, (ii) any investigation made by or on
behalf of any Underwriter or any person controlling any Underwriter or by or
on behalf of the Company, its officers or directors or any other person
controlling the Company and (iii) acceptance of and payment for any of the
Shares.

           8. Notwithstanding anything herein contained, this Agreement (or
the obligations of the several Underwriters with respect to the Option
Shares) may be terminated in the absolute discretion of the Representatives,
by notice given to the Company, if after the execution and delivery of this
Agreement and prior to the Closing Date (or, in the case of the Option
Shares, prior to the Additional Closing Date) (i) trading generally shall
have been suspended or materially limited on or by, as the case may be, any
of the New York Stock Exchange or the American Stock Exchange, or the
National Association of Securities Dealers, Inc., (ii) trading of any
securities of or guaranteed by the Company shall have been suspended on any
exchange or in any over-the-counter market, (iii) a general moratorium on
commercial banking activities in New York shall have been declared by either
Federal or New York State authorities, or (iv) there shall have occurred any
outbreak or escalation of hostilities or any change in financial markets or
any calamity or crisis that, in the judgment of the Representatives, is
material and adverse and which, in the judgment of the Representatives, makes
it impracticable to market the Shares being delivered at the Closing Date or
the Additional Closing Date, as the case may be, on the terms and in the
manner contemplated in the Prospectus.

           9. This Agreement shall become effective upon the later of (x)
execution and delivery hereof by the parties hereto and (y) release of
notification of the effectiveness of the Registration Statement (or, if
applicable, any post-effective amendment) by the Commission.

         If on the Closing Date or the Additional Closing Date, as the case
may be, any one or more of the Underwriters shall fail or refuse to purchase
Shares which it or they have agreed to purchase hereunder on such date, and
the aggregate number of Shares which such defaulting Underwriter or
Underwriters agreed but failed or refused to purchase is not more than
one-tenth of the aggregate number of Shares to be purchased on such date, the
other Underwriters shall be obligated severally in the proportions that the
number of Shares set forth opposite their


                                      27

<PAGE>

respective names in Schedule I bears to the aggregate number of Underwritten
Shares set forth opposite the names of all such non-defaulting Underwriters,
or in such other proportions as the Representatives may specify, to purchase
the Shares which such defaulting Underwriter or Underwriters agreed but
failed or refused to purchase on such date; PROVIDED that in no event shall
the number of Shares that any Underwriter has agreed to purchase pursuant to
Section 1 be increased pursuant to this Section 9 by an amount in excess of
one-tenth of such number of Shares without the written consent of such
Underwriter. If on the Closing Date or the Additional Closing Date, as the
case may be, any Underwriter or Underwriters shall fail or refuse to purchase
Shares which it or they have agreed to purchase hereunder on such date, and
the aggregate number of Shares with respect to which such default occurs is
more than one-tenth of the aggregate number of Shares to be purchased on such
date, and arrangements satisfactory to the Representatives and the Company
for the purchase of such Shares are not made within 36 hours after such
default, this Agreement (or the obligations of the several Underwriters to
purchase the Option Shares, as the case may be) shall terminate without
liability on the part of any non-defaulting Underwriter or the Company. In
any such case either you or the Company shall have the right to postpone the
Closing Date (or, in the case of the Option Shares, the Additional Closing
Date), but in no event for longer than seven days, in order that the required
changes, if any, in the Registration Statement and in the Prospectus or in
any other documents or arrangements may be effected. Any action taken under
this paragraph shall not relieve any defaulting Underwriter from liability in
respect of any default of such Underwriter under this Agreement.

          10. If this Agreement shall be terminated by the Underwriters, or
any of them, because of any failure or refusal on the part of the Company to
comply with the terms or to fulfill any of the conditions of this Agreement,
or if for any reason the Company shall be unable to perform its obligations
under this Agreement or any condition of the Underwriters' obligations cannot
be fulfilled, the Company agrees to reimburse the Underwriters or such
Underwriters as have so terminated this Agreement with respect to themselves,
severally, for all out-of-pocket expenses (including the fees and expenses of
its counsel) reasonably incurred by the Underwriter in connection with this
Agreement or the offering contemplated hereunder.

          11. This Agreement shall inure to the benefit of and be binding
upon the Company, the Underwriters, each affiliate of any Underwriter which
assists such Underwriter in the distribution of the Shares, any controlling
persons referred to herein and their respective successors and assigns.
Nothing expressed or mentioned in this Agreement is intended or shall be
construed to give any other person, firm or corporation any legal or
equitable right, remedy or claim under or in respect of this Agreement or any
provision herein contained. No purchaser of


                                      28

<PAGE>

Shares from any Underwriter shall be deemed to be a successor by reason
merely of such purchase.

          12. Any action by the Underwriters hereunder may be taken by the
Representatives jointly or by J.P. Morgan Securities Inc. alone on behalf of
the Underwriters, and any such action taken by the Representatives jointly or
by J.P. Morgan Securities Inc. alone shall be binding upon the Underwriters.
All notices and other communications hereunder shall be in writing and shall
be deemed to have been duly given if mailed or transmitted by any standard
form of telecommunication. Notices to the Underwriters shall be given to the
Representatives, c/o J.P. Morgan Securities Inc., 60 Wall Street, New York,
New York 10260 (telefax: 212-648-5705), Attention: Syndicate Department, copy
to Davis Polk & Wardwell, 450 Lexington Avenue, New York, New York 10017
(telefax: 212-450-5759), Attention: Jeffrey Small, Esq. Notices to the
Company shall be given to it at 65 West Watkins Mill Road, Gaithersburg,
Maryland, 20878 (telefax: 240-632-0735), Attention: Paul H. Fischer,
President and Chief Executive Officer, copy to Arnold & Porter, 555 Twelfth
Street, NW, Washington, DC 20004 (telefax: 202-942-6166), Attention: Steven
Kaplan, Esq.

          13. This Agreement may be signed in counterparts, each of which
shall be an original and all of which together shall constitute one and the
same instrument.

          14. THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE
WITH THE LAWS OF THE STATE OF NEW YORK, WITHOUT GIVING EFFECT TO THE
CONFLICTS OF LAWS PROVISIONS THEREOF.


                                      29

<PAGE>

         If the foregoing is in accordance with your understanding, please sign
and return four counterparts hereof.

                                            Very truly yours,

                                            GenVec, Inc.



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

Accepted: December __, 2000

J.P. Morgan Securities Inc.
UBS Warburg LLC
A.G. Edwards & Sons, Inc.

Acting severally on behalf of themselves
    and the several Underwriters listed
    in Schedule I hereto.

By: J.P. Morgan Securities Inc.

Acting on behalf of itself and the several
    Underwriters listed in Schedule I
    hereto.



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


                                      30

<PAGE>

                                                                     SCHEDULE I


<TABLE>
<CAPTION>
                                                     NUMBER OF SHARES
                 UNDERWRITER                          TO BE PURCHASED
                 -----------                         ----------------
<S>                                                  <C>
J.P. Morgan Securities Inc...............
UBS Warburg LLC..........................
A.G. Edwards & Sons, Inc.................



         Total...........................                4,000,000
</TABLE>



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