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EXHIBIT 10.26

                         EXECUTIVE EMPLOYMENT AGREEMENT

         THIS EXECUTIVE EMPLOYMENT AGREEMENT is made as of the May 31, 2000, by
and between CHESAPEAKE BIOLOGICAL LABORATORIES, INC., a Maryland corporation
(the "Corporation"), and JOHN T. BOTEK (the "Executive").

                                    RECITALS

         The Executive is the Vice President and Chief Operating Officer of the
Corporation. The Corporation and the Executive are parties to an Executive
Employment Agreement, dated as of March 22, 1999 (the "Prior Agreement"). The
Corporation and the Executive consider it in their mutual best interests that
they enter into a new Executive Employment Agreement to replace the Prior
Agreement and to define the terms and conditions of the Executive's continued
employment.

         NOW, THEREFORE, in consideration of the foregoing and of the mutual
covenants and agreements hereinafter contained, the Corporation and the
Executive hereby agree as follows:

         1.       FULL-TIME EMPLOYMENT OF EXECUTIVE.

                  1.1.     DUTIES AND STATUS.

                           (a)   The Corporation shall continue to engage the
Executive as a full-time executive employee for the period specified in Section
4 hereof (the "Employment Period"), and the Executive accepts such employment,
on the terms and conditions set forth in this Agreement. At all times during the
Employment Period, the Executive shall hold the offices of Vice President and
Chief Operating Officer. During the Employment Period, the Executive shall
exercise such authority and perform such executive duties as are commensurate
with the duties of Vice President and Chief Operating Officer of the
Corporation. During the Employment Period, there shall be no material decrease
in the responsibilities and duties of the Executive, unless otherwise agreed to
in writing by the Corporation and the Executive.

                           (b)   During the Employment Period, the Executive
shall (i) devote substantially all of his time and efforts to the business of
the Corporation and its subsidiaries; (ii) not engage in consulting work or any
trade or business for his own account or for or on behalf of any other person,
firm or corporation which competes or conflicts or interferes with the
performance of his duties hereunder in any way; and (iii) accept such additional
office or offices with the Corporation or its subsidiaries to which he may be
elected by the Board of Directors of the Corporation, provided that the
performance of the duties of such office or offices shall be consistent with the
scope and nature of the duties provided for in paragraph (a) of this Section
1.1. The foregoing shall not preclude the Executive from devoting a reasonable
amount of his time to (i) management of his personal business investments, (ii)
civic and charitable affairs, (iii) supervision of his personal investments and
(iv) serving on boards of directors of other corporations, provided, in each
case, that such activities do not interfere with the performance of the
Executive's duties under this Agreement.

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                           (c)   The Executive shall be required to perform the
services and duties provided for in paragraph (a) of this Section 1.1 only at
the location of the executive offices of the Corporation in the Baltimore
metropolitan area.

                           (d)   The Executive shall be entitled to vacations,
leaves of absence and leaves for illness or temporary disability in accordance
with the policies of the Corporation as in effect from time to time, which
policies shall not be less favorable than those in effect at the date of this
Agreement. Any leave on account of illness or temporary disability which is less
than total disability as defined in the Corporation's long-term disability
insurance plan ("Total Disability") and which continues for a continuous period
of less than 180 consecutive days shall not constitute a breach by the Executive
of his obligations hereunder.

                  1.2.     COMPENSATION AND GENERAL BENEFITS.  As compensation
for his services under this Agreement, the Executive shall be compensated as
follows:

                           (a)   The Corporation shall initially pay the
Executive an annual base salary of $160,000, which shall be payable in periodic
equal installments no less frequent than the periodic installments in effect for
salaries of senior executives of the Corporation immediately prior to the
effective date of this Agreement. Such base salary shall be subject to normal
periodic review by the Compensation Committee of the Board of Directors of the
Corporation (the "Compensation Committee"), at least annually, for increases
based on the policies established by the Compensation Committee and based on the
Executive's contributions to the enterprise.

                           (b)   The Executive also shall be eligible for annual
bonus compensation payments, based upon his contribution to the Corporation's
business and the Corporation's financial condition and recent results of
operations, in such amounts, if any, as the Compensation Committee considers
appropriate in its sole and absolute discretion. Any such bonus compensation,
whether in the form of cash paid to the Executive as a bonus or as part of a
profit or incentive cash compensation program established from time to time, or
in the form of stock options or other equity-based grants under the
Corporation's incentive plans, are hereinafter referred to as "Incentive
Compensation." Nothing in this Agreement, however, shall be deemed to require
the Corporation to pay any Incentive Compensation to Executive. For purposes of
determining the amount of the Executive's Incentive Compensation resulting from
the grant of a stock option, the value of any such option shall be determined
using the Black-Scholes formula as of the date of grant.

                           (c)   During the Employment Period, the Executive
shall be entitled to such fringe benefits as are now or hereafter made available
to the Corporation's executive officers generally and to participate in the
Corporation's 401(k) plan, as well as such plans of the Corporation relating to
stock options, employee stock ownership, pension, thrift, profit-sharing, group
life insurance, medical coverage, education, or other retirement or employee
benefits as the Corporation has adopted or may hereafter adopt for the benefit
of its executive officers.

                           (d)   The Corporation shall reimburse the Executive
for his reasonable out-of-pocket expenses incurred in connection with performing
his duties hereunder on behalf of

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the Corporation, subject to the Executive's compliance with the Corporation's
policies for expense reimbursement as in effect from time to time.

                           (e)   No later than execution of this Agreement, the
Corporation shall sell to the Executive 75,000 shares of its Class A Common
Stock in accordance with the terms approved by the Compensation Committee on May
25, 2000.

                           (f)   During the Employment Period, the Corporation
shall maintain a "split dollar" term insurance policy in the face amount of
$200,000 on the life of Executive, with the beneficiary thereof to be such
person, trust or entity as Executive shall designate from time to time. During
the Employment Period, the Corporation shall pay all premiums as and when due on
such policy, and upon termination or expiration of the Employment Period, the
Corporation shall assign such policy to Executive.

         2.       COMPETITION; CONFIDENTIAL INFORMATION.

                  The Executive and the Corporation recognize that due to the
nature of his position with the Corporation, the Executive has had access to and
has acquired, will have access to and will acquire, and will assist in
developing, confidential and proprietary information relating to the business
and operations of the Corporation and its subsidiaries and affiliates,
including, without limiting the generality of the foregoing, information with
respect to their present and prospective products, systems, customers, agents,
processes and sales and marketing methods. The Executive acknowledges that such
information has been and will continue to be of central importance to the
business of the Corporation and its affiliates and that disclosure of it to or
its use by others could cause substantial loss to the Corporation. The Executive
and the Corporation also recognize that an important part of the Executive's
duties will be to develop good will for the Corporation and its affiliates
through his personal contact with customers, agents and others having business
relationships with the Corporation and its subsidiaries and affiliates, and that
there is a danger that this good will, a proprietary asset of the Corporation
and its subsidiaries and affiliates, may follow the Executive if and when his
relationship with the Corporation is terminated. The Executive accordingly
agrees as follows:

                  2.1.     NON-COMPETITION.

                  At all times during the Employment Period and for a period of
one (1) year after expiration or termination of the Employment Period, other
than as a result of a termination by the Corporation without cause (pursuant to
Section 4.2):

                           (a)   the Executive will not, directly or indirectly,
either individually or as owner, partner, agent, employee, consultant or
otherwise, except for the account of and on behalf of the Corporation or its
subsidiaries or affiliates, engage in any activity competitive with the business
of the Corporation or its subsidiaries or affiliates;

                           (b)   the Executive will not, directly or indirectly,
solicit or otherwise attempt to establish for himself or any person, firm or
entity, other than the Corporation or its subsidiaries or affiliates, any
business relationship with any person, firm or corporation which was, at the
time of termination of the Employment Period, a customer of the Corporation or
one

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of its subsidiaries or affiliates, but only to the extent such business
relationship would be competitive with the business of the Corporation or its
subsidiaries or affiliates; and

                           (c)   the Executive will not, directly or indirectly,
either individually or as owner, agent, employee, consultant or otherwise,
except for the account of and on behalf of the Corporation or its subsidiaries
or affiliates, solicit or otherwise attempt to establish for himself or any
other person, firm or entity, any employment, agency, consulting or other
relationship with any person (except any person with whom the Executive had a
business relationship prior to his employment with the Corporation hereunder,
other than solely through his previous affiliation with the Corporation as a
director) who was an employee of the Corporation or its subsidiaries or
affiliates at any time within one year before termination or expiration of the
Employment Period.

                  2.2. INVESTMENTS. Nothing in this Section 2 shall be construed
to prevent the Executive from owning, as an investment, not more than 2% of a
class of equity securities issued by any competitor of the Corporation or its
affiliates and publicly-traded and registered under Section 12 of the Securities
Exchange Act of 1934.

                  2.3. TRADE SECRETS. The Executive will keep confidential any
and all trade secrets and confidential or proprietary information of the
Corporation and its subsidiaries and affiliates which are now known to him or
which hereafter may become known to him as a result of his employment or
association with the Corporation and shall not at any time directly or
indirectly disclose any such information to any person, firm or corporation, or
use the same in any way other than in connection with the business of the
Corporation or its affiliates during and at all times after the expiration of
the Employment Period. For purposes of this Agreement, "trade secrets and
confidential or proprietary information" means information unique to the
Corporation or any of its subsidiaries or affiliates which has a significant
business purpose and is not known or generally available from sources outside
the Corporation or any of its affiliates or typical of industry practice.

                  2.4. COMPANY PROPERTY. All correspondence, records, documents,
software, promotional materials and other Corporation property, including all
copies, which come into Executive's possession by, through or in the course of
his employment, regardless of the source and whether created by Executive, are
the sole and exclusive property of the Corporation, and immediately upon the
termination of Executive's employment, Executive shall return to the Corporation
all such property of the Corporation.

         3.       CORPORATION'S REMEDIES FOR BREACH.

                  It is recognized that damages in the event of breach of
Section 2 by the Executive would be difficult, if not impossible, to ascertain,
and it is therefore agreed that the Corporation, in addition to and without
limiting any other remedy or right it may have, shall have the right to an
injunction or other equitable relief in any court of competent jurisdiction,
enjoining any such breach, and the Executive hereby waives any and all defenses
he may have on the ground of lack of jurisdiction or competence of the court to
grant such an injunction or other equitable relief. The existence of this right
shall not preclude any other rights and remedies at law or in equity which the
Corporation may have.

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         4.       EMPLOYMENT PERIOD.

                  4.1. DURATION. The Employment Period shall commence on June 1,
2000, and shall continue through May 31, 2002; PROVIDED, HOWEVER, the Employment
Period shall be renewed for one year beginning on June 1, 2002, if the Executive
gives the Corporation advance written notice, on or before February 28, 2002, of
such one year renewal of the Employment Period. Notwithstanding the preceding
sentence, the Employment Period shall automatically terminate upon the
Executive's death, retirement or Total Disability, upon a termination by the
Corporation for cause under Section 4.2 hereof or as provided in Section 5
hereof as the result of a Change in Control (as hereinafter defined). In the
event that the Employment Period shall terminate upon the Executive's death,
retirement or Total Disability, or for cause under Section 4.2 hereof, the
Corporation shall pay the Executive his base salary and any Incentive
Compensation (to the extent accrued) through the date of such termination, at
the rate or rates then in effect, and the Corporation shall have no further
obligation to the Executive under this Agreement. Any reference herein to
"termination" of the Executive's employment shall not be deemed to mean or
include the cessation of the Executive's employment with the Corporation as a
result of expiration of the Employment Period in accordance with the terms of
this Agreement.

                  4.2. TERMINATION FOR CAUSE. The Executive's employment under
this Agreement may be terminated by the Board of Directors of the Corporation
for "cause". As used in this Agreement, termination for "cause" shall mean the
Executive's termination for gross negligence, commission of a felony,
incompetence, fraud or dishonesty involving the Corporation's assets,
intentional failure to perform his duties hereunder or any other material breach
by the Executive of this Agreement (including, without limitation, Section 2
hereof). The Corporation shall notify the Executive in writing at least 15 days
in advance of any proposed termination for cause, indicating in detail the
specific reasons for such termination, and shall extend to the Executive the
opportunity during such 15 days to cure the breach or misconduct if the same is
capable of being cured. In the event that the Executive's employment under this
Agreement is terminated for cause, the Corporation shall pay the Executive his
base salary and any Incentive Compensation (to the extent accrued through the
date of such termination), at the rate or rates then in effect, and the
Corporation shall have no further obligation to the Executive under this
Agreement.

                  4.3.     TERMINATION WITHOUT CAUSE.

                           (a)   In the event the Executive's employment
hereunder is terminated without cause other than a termination as a result of,
in connection with or following a Change in Control pursuant to Section 5, the
Executive shall be entitled to receive the greater of (x) the compensation
described in Section 1.2(a) of this Agreement for the unexpired remainder of the
Employment Period, or (y) one year's annual salary as in effect on the date of
such termination, in either case together with (i) an amount equal to the
Incentive Compensation, if any, the Executive received, or which was accrued by
the Corporation for the benefit of the Executive, during the twelve-months'
period immediately preceding such termination, and (ii) the benefits described
in Section 1.2(c) of this Agreement (other than those benefits, such as stock
option grants, participation in any profit sharing plan or education benefits,
which are available only to employees of the Corporation, except that, in the
case of health, life, disability and other insurance plans or programs in which
the Executive participated immediately prior to the

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termination, such benefits shall continue, provided that the Executive's
continued participation is permissible under the general terms and provisions of
such plans or programs, or in the event that such continued participation is
barred or not otherwise permissible or available, the Corporation shall arrange
to provide the Executive, at the expense of the Corporation, with benefits
substantially similar to those which the Executive had been receiving under such
plans health, life, disability and other insurance and programs immediately
prior to the time of termination of the Executive's employment for the unexpired
remainder of the Employment Period). All payments under this Section 4.3(a)
shall be made in three substantially equal monthly installments, commencing on
the first day of the first calendar month immediately following the month during
which the date of termination occurred and continuing on the first day of each
of the two immediately succeeding consecutive calendar months, without present
value discount, except that if the Corporation is to continue to provide
benefits pursuant to clause (ii) above, it shall do so for the longer of the
unexpired remainder of the Employment Period or one year from the date of such
termination.

                           (b)   The Executive shall not be required to mitigate
the amount of any payment or benefit to which he may be entitled under any
provision of this Agreement by seeking other employment, nor shall any such
amount be reduced by remuneration earned from other sources if his employment is
terminated without cause.

                           (c)   The Executive agrees that the compensation and
benefits to which he shall be entitled in the event of termination of his
employment hereunder without cause shall be in lieu of all other claims which
the Executive may make against the Corporation by reason of such termination of
employment. Reference herein to termination of the Executive's employment
hereunder "without cause" shall not mean or include, but shall specifically
exclude, termination upon death, retirement or Total Disability of the
Executive.

                           (d)   The Executive and the Corporation recognize
that, due to the relationship of the Executive and the Corporation and such
relationship's susceptibility to public comment which may be injurious to the
Executive or the Corporation, or both, it is necessary for the protection of
both parties that neither party make any disparaging public statements
concerning the termination of this Agreement and the arrangements made pursuant
thereto. The Executive and the Corporation, accordingly, agree that neither the
Executive nor the Corporation will make any public comments about the other at
any time following the termination of this Agreement without the express prior
approval of the other party, which approval shall not be unreasonably withheld,
conditioned or delayed, and subject in any event to any obligation on the part
of the Corporation under applicable law, including federal securities laws, to
issue a press release or otherwise to make public comment regarding such
matters.

         5.       CHANGE IN CONTROL.

                  5.1      TERMINATION IN CONNECTION WITH CHANGE IN CONTROL.

                           (a)   If, during the term of this Agreement, there
is a "Change in Control" of the Corporation, the Executive's employment
hereunder may be terminated: (i) either by the Corporation or the Executive,
effective on the date of such Change in Control, provided that written notice of
such termination is provided to the other party at least twenty (20) days

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prior to the effective date of such Change in Control, and (ii) by the Executive
at any time within six (6) months following such Change in Control, provided
that the Executive provides the Corporation with at least thirty (30) days
advance written notice of such termination. If the Executive or the Corporation
terminates the Executive's employment under this Agreement as provided in the
preceding sentence (unless such termination occurs by virtue of Executive's
normal retirement, Total Disability or death, or the Employment Period expires
or is not renewed), as consideration for services previously rendered to the
Corporation and in lieu of any future payments to the Executive under Section
1.2(a) hereof, the Executive will be entitled to receive a lump sum cash payment
as provided for herein (an "Involuntary Severance Payment"), and, upon payment
of such Involuntary Severance Payment, the Corporation shall have no further
obligation to the Executive under this Agreement. The amount of the Involuntary
Severance Payment shall equal two times the sum of Executive's then effective
annual salary plus any Incentive Compensation paid by the Corporation to, and/or
accrued for the benefit of, the Executive during the twelve-months' period
immediately preceding such termination of employment. The amount of the
Involuntary Severance Payment shall not be reduced by any compensation which the
Executive may receive from other employment with another employer after
termination of his employment with the Corporation, and the Involuntary
Severance Payment shall be paid no later than five (5) days after termination of
the Executive's employment pursuant to this Section 5.1(a).

                           (b)   The Corporation agrees to cause the
Compensation Committee of the Board of Directors to cause all stock options
granted to the Executive, whether pursuant to the Corporation's Stock Option
Plans or otherwise, to provide that all options granted under those agreements
(including the options granted under Section 1(e) hereof) shall automatically
become completely vested no later than immediately prior to any Change in
Control.

                  5.2   DEFINITION OF CHANGE IN CONTROL.  For purposes of this
Agreement, a "Change in Control" of the Corporation shall be deemed to have
occurred if (i) any person, entity or group of persons or entities acting in
concert (collectively, a "Person") becomes or become the beneficial owners of
50% or more of the then outstanding shares of Common Stock of the Corporation,
(ii) any Person holds revocable or irrevocable proxies entitling them to vote
50% or more of the then outstanding shares of the Corporation's Common Stock
(other than the persons named as proxies in any Proxy Statement prepared by
management of the Corporation in connection with an annual or special meeting of
stockholders called by an officer or the Board of Directors of the Corporation),
(iii) a merger, sale of substantially all the assets of the Corporation, share
exchange, consolidation or other business combination (as defined in the
Maryland General Corporation Law) of the Corporation and any other Person, as a
result of which the Corporation's Common Stock becomes exchangeable for other
securities or property or cash, or (iv) if a majority of the members of the
Board of Directors is replaced during any 12 month period during the Employment
Period but only if the directors who replace such majority have not been elected
either by the remaining members of the Board of Directors or by the stockholders
of the Corporation.

         6.       CERTAIN ADDITIONAL PAYMENTS BY THE CORPORATION.

                  6.1  EXCISE TAX PROTECTION.  In the event it shall be
determined that any payment or distribution by the Corporation to or for the
benefit of the Executive (whether paid or payable or distributed or
distributable pursuant to the terms of this Agreement or otherwise, but
determined without regard to any additional

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payments required under this Section 6) (a "Payment") would be subject to the
excise tax imposed by Section 4999 (or any successor provision) of the Internal
Revenue Code of 1986, as amended, or any interest or penalties are incurred by
the Executive with respect to such excise tax (such excise tax, together with
any such interest and penalties, are hereinafter collectively referred to as the
"Excise Tax"), then the Corporation shall pay to the Executive an additional
amount (a "Gross-Up Payment") such that, after payment by the Executive of all
income and employment taxes and any Excise Tax imposed upon the Gross-Up
Payment, the Executive will retain an amount of the Gross-Up Payment equal to
the Excise Tax imposed upon the Payments.

                  6.2   DETERMINATIONS.  Subject to the provisions of
Section 6.3 below, all determinations required to be made under this Section
6.2, including whether and when a Gross-Up Payment is required, the amount of
such Gross-Up Payment and the assumptions to be utilized in arriving at such
determination, shall be made by the Corporation's then independent auditors (the
"Accountants"), who shall provide detailed supporting calculations both to the
Corporation and the Executive within 15 business days of the receipt of notice
from the Executive that there has been a Payment, or such earlier time as may be
requested by the Corporation. The Accountants may employ and rely upon the
opinion of legal counsel to the extent they deem necessary or advisable. All
fees and expenses of the Accountants shall be borne solely by the Corporation.
Any Gross-Up Payment determined pursuant to this Section 6 shall be paid by the
Corporation to the Executive within five (5) business days of the Corporation's
receipt of the Accountants' determinations. If the Accountants determine that no
Excise Tax is payable by the Executive, the Accountants shall furnish the
Executive with a written opinion that failure to report the Excise Tax on the
Executive's applicable federal income tax return will not result in the
imposition of a negligence or similar penalty. Any determination by the
Accountants shall be binding upon the Corporation and the Executive. If no
Gross-Up Payment is made by the Corporation or any Gross-Up Payment which is
made by the Corporation is determined by the Internal Revenue Service to be
insufficient to satisfy the Excise Taxes and/or all applicable income taxes
incurred by the Executive on the Gross-Up Payment (in either case, an
"Underpayment"), and the Executive thereafter is required to make a payment of
any Excise Tax, the Accountants shall determine the amount of the Underpayment
that has occurred, and any such Underpayment shall be promptly paid by the
Corporation to or for the benefit of the Executive. The Executive shall promptly
notify the Corporation in writing of any claim by the Internal Revenue Service
that, if successful, would result in the assessment or collection of any
Underpayment, and shall permit the Corporation to participate in any proceedings
relating to such claim if the Corporation wishes to contest the Internal Revenue
Service's claim. The Corporation shall bear and pay directly all costs and
expenses (including additional interest and penalties) incurred in connection
with any such contest and shall indemnify and hold the Executive harmless, on an
after-tax basis, for any Excise Tax or income tax (including interest and
penalties with respect thereto) imposed as a result of such representation and
payment of costs and expenses.

                  6.3.  REFUNDS.  If, after the receipt by the Executive of any
amount paid or advanced by the Corporation in connection with a contest
undertaken pursuant to Section 6.2, the Executive becomes entitled to receive
any refund or credit with respect thereto, the Executive shall (subject to the
Corporation's complying with Section 6.2) promptly pay to the Corporation the
amount of such refund or credit (together with any interest paid or credited
thereon after taxes applicable thereto).

         7.       INTEREST ON OVERDUE PAYMENTS.

                  The Executive shall be entitled to receive interest (at the
prime rate of interest as then announced by the Corporation's then bank lenders)
on any payment due to Executive hereunder which is not paid when due (other than
payments deferred with the consent of Executive).

         8.       NOTICES.

                  Any notices, requests, demands and other communications
provided for by this Agreement shall be sufficient if in writing and if sent by
registered or certified mail to the Executive at the last address he has filed
in writing with the Corporation or, in the case of the Corporation, at its
principal executive offices.

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         9.       BINDING AGREEMENT.

                  This Agreement shall be effective as of the date hereof and
shall be binding upon and inure to the benefit of the Executive, his executors,
administrators and personal representatives. The rights and obligations of the
Corporation under this Agreement shall inure to the benefit of and shall be
binding upon the Corporation and any successor of the Corporation as defined in
the Maryland General Corporation Law as now in effect; provided that (i) this
Agreement shall be binding upon any successor of the Corporation who is a vendee
or other transferee of substantially all of the assets of the Corporation only
insofar as the obligations of the Corporation hereunder shall have been
expressly assumed by such vendee or transferee in connection with or pursuant to
such transfer; (ii) this Agreement may not be assigned by the Corporation
without the consent of the Executive, and (iii) in the case of a successor by
sale or transfer of all or substantially all of the assets of the Corporation,
or any other successor in which the Corporation does not cease to exist by
operation of the transaction in question as a matter of law, the Corporation or
such successor shall not be relieved of its obligations hereunder. All
references herein to the Corporation shall be deemed to include any such
successor who shall become obligated to the Executive hereunder.

         10.      ENTIRE AGREEMENT; GOVERNING LAW; SEVERABILITY.

                           (a)   This Agreement constitutes the entire
understanding of the Executive and the Corporation with respect to the subject
matter hereof and supersedes any and all prior understandings between the
parties written or oral, including without limitation, the Prior Agreement. This
Agreement may not be changed, modified or discharged orally, but only by an
instrument in writing signed by the parties. The Executive's or Corporation's
failure to insist upon strict compliance with any provision hereof shall not be
deemed to be a waiver of such provision or any other provision hereof.

                           (b)   This  Agreement shall be governed by the laws
of the State of Maryland, and the invalidity or unenforceability of any
provisions hereof shall in no way affect the validity or enforceability of any
other provision.

                           (c)   Any provision of this Agreement which is
prohibited or unenforceable in any jurisdiction shall, as to such jurisdiction,
be deemed severable from the remainder of this Agreement, and the remaining
provisions contained in this Agreement shall be construed to preserve to the
maximum permissible extent the intent and purposes of this Agreement. Any such
prohibition or unenforceability in any jurisdiction shall not invalidate or
render unenforceable such provision in any other jurisdiction where it is not
prohibited or unenforceable.

         11.      ARBITRATION.

         Any disputes hereunder which cannot be resolved by negotiations between
the Corporation and the Executive shall be submitted to, and determined by,
arbitration in accordance with the arbitration rules of Jams/Endispute, Inc.,
and the parties agree that arbitration shall be the exclusive method of
resolution of any dispute under this Agreement and agree to be bound by the
final award of the arbitrator in any such proceeding. The arbitrator

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shall apply the laws of the State of Maryland. Arbitration may be held in
Baltimore, Maryland or such other place as the parties hereto may mutually
agree. Judgment upon the award by the arbitrator may be entered in any court
having jurisdiction thereof. In reaching its decision, the arbitrator shall have
no authority to change or modify any provision of this Agreement.

         IN WITNESS WHEREOF, the parties have executed and delivered this
Agreement as of the date first above written.

ATTEST:                                CHESAPEAKE BIOLOGICAL LABORATORIES, INC.

/s/ Joyce Carnucci                     By: /s/ John T. Janssen
------------------                     -----------------------
                                       Title:  CFO

WITNESS:                               EXECUTIVE:

/s/ Joseph G. Wendel                   /s/ John T. Botek
--------------------                   -----------------
Controller                             John T. Botek

                                       66<PAGE>

EXHIBIT 10.27

                       Restricted Stock Purchase Agreement

              This Restricted Stock Purchase Agreement is entered into on June
16, 2000, 2000, by Chesapeake Biological Laboratories, Inc., a Maryland
corporation (the "Company"), and Thomas P. Rice (the "Purchaser").

                                    RECITALS

              WHEREAS, the Company agreed under that certain Executive
Employment Agreement between the Company and the Purchaser dated as of May 31,
2000 (the "Employment Agreement") to permit the Purchaser to acquire 100,000
shares of Class A Common Stock, $0.01 par value per share, of the Company
("Common Stock") pursuant to and subject to the terms and conditions of the
Chesapeake Biological Laboratories, Inc. Fifth Stock Incentive Plan (the
"Plan"); and

              WHEREAS, this Restricted Stock Purchase Agreement is entered into
by the Company in fulfillment of that obligation and sets forth, together with
the Plan which is incorporated herein by reference and made a part hereof, the
terms and conditions of the purchase of such shares.

              NOW, THEREFORE, in consideration of the mutual covenants
hereinafter set forth and for other good and valuable consideration, the parties
agree as follows:

SECTION A -- ACQUISITION OF SHARES.

1.   TRANSFER. On the terms and conditions set forth in this Agreement, the
     Company agrees to transfer 100,000 shares of Common Stock to the Purchaser.
     The transfer shall occur at the offices of the Company on the date set
     forth above.

2.   CONSIDERATION. The Purchaser agrees to pay $2.50, which represents Fair
     Market Value on the date hereof, for each Purchased Share. Payment shall
     be made on the date hereof in cash or cash equivalents or, at the election
     of the Purchaser, by delivery of a 50% recourse promissory note in an
     original principal amount equal to the amount of the Purchase Price for
     the Purchased Shares not otherwise paid in cash or cash equivalents (the
     "Note") (the form of  which is attached hereto as Exhibit A and made a part
     hereof), with interest on the Note set at the applicable Federal short-term
     rate in effect as of the date such Note is made, compounded annually. The
     Note shall be collateralized by a pledge of the Purchased  Shares in
     accordance with a Pledge and Security Agreement (the form of which is
     attached hereto as Exhibit B and made a part hereof). Payments of
     principal and interest due under the Note shall be subject to acceleration
     under the terms set forth therein and in the Pledge and Security Agreement.
     The Note shall provide for a balloon payment of principal and accrued,
     unpaid interest on May 31, 2002 or, if the Employment Agreement is renewed
     beyond that date, May 31, 2003 (whichever applies, the "Maturity Date"). If
     Purchaser is then in the Service of the Company, payment of the principal
     amount of the Note and accrued, unpaid interest shall be forgiven by the
     Company as follows (i) as to the entire principal amount of the Note and
     all accrued, unpaid interest, immediately prior to a Change in Control if
     such Change in Control occurs on or before the Maturity Date, (ii) on
     May 31, 2001, as to one-third of the principal amount of the Note and
     one-third of the accrued, unpaid interest, and (iii) on May 31, 2002, as
     to the entire remaining principal amount of the Note and all accrued,
     unpaid interest.

3.   TAX ELECTION. Purchaser hereby acknowledges that he has been advised by the
     Company to seek independent tax advice regarding the availability and
     advisability of making an election under Section

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     83(b) of the Internal Revenue Code of 1986, as amended, and that any
     such election, if made, must be made within 30 days of the date the
     Purchased Shares are transferred to the Purchaser.

4.   DEFINED TERMS. Capitalized terms not defined above are defined in Section J
     of this Agreement.

SECTION B -- REPURCHASE RIGHT.

1.   SCOPE OF REPURCHASE RIGHT. All of the Purchased Shares initially shall be
     Restricted Shares and shall be subject to a right, but not an obligation,
     of repurchase by the Company (the "Repurchase Right"). The Purchaser shall
     not transfer, assign, encumber, sell, hypothecate, exchange or otherwise
     dispose of any Restricted Shares, except by will or the laws of descent and
     distribution. The Company shall not be required to (a) transfer on its
     books any Purchased Shares that have been sold or transferred in
     contravention of this Agreement or (b) treat as the owner of Purchased
     Shares, or otherwise accord voting, dividend or liquidation rights to, any
     transferee to whom Purchased Shares have been transferred in contravention
     of this Agreement.

2.   CONDITION PRECEDENT TO EXERCISE OF REPURCHASE RIGHT. Subject to the next
     paragraph of this Section B, the Repurchase Right shall be exercisable with
     respect to any or all of the Restricted Shares at any time following the
     date when the Purchaser's Service by the Company terminates for any reason,
     with or without cause, including death or disability.

3.   LAPSE OF REPURCHASE RIGHT. The Repurchase Right shall lapse with
     respect to (a) 33,333 Shares on July 1, 2000, (b) 33,333 Shares on May
     31, 2001 and (c) 33,334 Shares May 31, 2002, provided that in each such
     case the Purchaser continuously remains in the Service of the Company
     from the date of this Agreement up to the specified lapse date.
     Notwithstanding the immediately preceding sentence, if a Change in
     Control occurs while the Purchaser is in the Service of the Company, the
     Repurchase Right shall lapse with respect to any and all Restricted
     Shares immediately prior to the Change in Control. Except as otherwise
     provided in the Pledge and Security Agreement, the lapse of the
     Repurchase Right under this Agreement shall not affect the Company's
     rights regarding the Purchased Shares subject to the Pledge and Security
     Agreement.

4.   REPURCHASE PRICE. If the Company exercises the Repurchase Right, it shall
     pay the Purchaser an amount equal to the Purchase Price, adjusted to
     reflect any intervening stock splits or reverse stock splits since the date
     of this Agreement, for each of the Restricted Shares being repurchased.

5.   EXERCISE OF REPURCHASE RIGHT. The Repurchase Right shall be exercisable
     only by written notice delivered to the Purchaser. The notice shall set
     forth the date on which the repurchase is to be effected. Such date
     shall not be more than 30 days after the date of the notice. The
     certificate(s) representing the Restricted Shares to be repurchased
     shall, prior to the close of business on the date specified for the
     repurchase, be delivered to the Company properly endorsed for transfer.
     The Company shall, concurrently with the receipt of such certificate(s),
     pay to the Purchaser the purchase price determined according to
     Paragraph B.4 above. Payment shall be made (a) in cash or cash
     equivalents, (b) by canceling indebtedness to the Company incurred by
     the Purchaser in the purchase of the Restricted Shares, or (c) by a
     combination of the foregoing.

6.   ADDITIONAL SHARES OR SUBSTITUTED SECURITIES. In the event of the
     declaration of a stock dividend, the declaration of an extraordinary
     dividend payable in a form other than stock, a spin-off, a stock split,
     a reverse stock split, a recapitalization or a similar transaction
     affecting the Company's outstanding securities without receipt of
     consideration, any new, substituted or additional securities or other
     property (including money paid other than as an ordinary cash dividend)
     which are by reason of such transaction distributed with respect to any
     Restricted Shares shall immediately be subject to the

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     Repurchase Right. Appropriate adjustments to reflect the distribution of
     such securities or property shall be made to the number and/or class of
     the Restricted Shares. Appropriate adjustments shall also, after each
     such transaction, be made to the price per share to be paid upon the
     exercise of the Repurchase Right in order to reflect any change in the
     Company's outstanding securities effected without receipt of
     consideration therefor; provided, however, that the aggregate purchase
     price payable for the Restricted Shares shall remain the same.

7.   TERMINATION OF RIGHTS AS STOCKHOLDER. If the Company makes available, at
     the time and place and in the amount and form provided in this Agreement,
     the consideration for the Restricted Shares to be repurchased in accordance
     with this Section B, then after such time, the person from whom such
     Restricted Shares are to be repurchased shall no longer have any rights as
     a holder of such Restricted Shares (other than the right to receive payment
     of such consideration in accordance with this Agreement). Such Restricted
     Shares shall be deemed to have been repurchased in accordance with the
     applicable provisions hereof, whether or not the certificate(s) therefor
     have been delivered as required by this Agreement.

8.   ESCROW. Upon issuance, the certificates for Restricted Shares shall be
     deposited in escrow with the Company to be held in accordance with the
     provisions of this Agreement. Any new, substituted or additional
     securities or other property described in Paragraph B.6 above shall
     immediately be delivered to the Company to be held in escrow, but only
     to the extent the Purchased Shares are at the time Restricted Shares.
     All regular cash dividends on Restricted Shares (or other securities at
     the time held in escrow) shall be paid directly to the Purchaser and
     shall not be held in escrow. Restricted Shares, together with any other
     assets or securities held in escrow hereunder, shall be (a) surrendered
     to the Company for repurchase and cancellation upon the Company's
     exercise of its Repurchase Right or (b) released to the Purchaser upon
     the Purchaser's request to the extent the Purchased Shares are no longer
     Restricted Shares nor subject to the pledge under the Pledge and
     Security Agreement (but not more frequently than once every three months
     unless the Company determines otherwise). In any event, all Purchased
     Shares with respect to which the Repurchase Right has lapsed (and any
     other vested assets and securities attributable thereto) and which are
     no longer subject to the Pledge and Security Agreement as a result of
     payment in full of the Note shall be released within 10 days after the
     Purchaser's cessation of Service.

SECTION C -- SUCCESSORS AND ASSIGNS.

         Except as otherwise expressly provided to the contrary, the provisions
of this Agreement shall inure to the benefit of, and be binding upon, the
Company and its successors and assigns and be binding upon the Purchaser and the
Purchaser's legal representatives, heirs, legatees, distributees, assigns and
transferees by operation of law, whether or not any such person has become a
party to this Agreement or has agreed in writing to join herein and to be bound
by the terms, conditions and restrictions hereof.

SECTION D -- NO RETENTION RIGHTS.

         Nothing in this Agreement shall confer upon the Purchaser any right to
continue in Service for any period of specific duration or interfere with or
otherwise restrict in any way the rights of the Company (or any Parent or
Subsidiary employing or retaining the Purchaser) or of the Purchaser, which
rights are hereby expressly reserved by each, to terminate his or her Service at
any time and for any reason, with or without cause or notice, subject in all
cases to the terms of the Employment Agreement and any successor thereto.

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SECTION E -- LEGENDS.

         All certificates evidencing Purchased Shares shall bear a legend in
substantially the following form:

         "THE SHARES REPRESENTED HEREBY MAY NOT BE SOLD, ASSIGNED, TRANSFERRED,
         ENCUMBERED, HYPOTHECATED, EXCHANGED OR IN ANY MANNER DISPOSED OF,
         EXCEPT IN COMPLIANCE WITH THE TERMS OF A WRITTEN AGREEMENT BETWEEN THE
         COMPANY AND THE REGISTERED HOLDER OF THE SHARES (OR THE PREDECESSOR IN
         INTEREST TO THE SHARES). SUCH AGREEMENT GRANTS TO THE COMPANY CERTAIN
         REPURCHASE RIGHTS UPON TERMINATION OF SERVICE WITH THE COMPANY. THE
         SECRETARY OF THE COMPANY WILL UPON WRITTEN REQUEST FURNISH A COPY OF
         SUCH AGREEMENT TO THE HOLDER HEREOF WITHOUT CHARGE."

SECTION F -- NOTICE.

         Any notice required by the terms of this Agreement shall be given in
writing and shall be deemed effective upon personal delivery or upon deposit
with the United States Postal Service, by registered or certified mail, with
postage and fees prepaid; provided that, if the receiving party consents in
advance, a notice may be given by telecopy or by such other electronic
transmission mechanism as may be available to the parties. Notice shall be
addressed to the Company, care of the Corporate Secretary, at its principal
executive office and to the Purchaser at the address that he most recently
provided to the Company.

SECTION G -- ENTIRE AGREEMENT.

         This Agreement, together with the Note and the Pledge and Security
Agreement, constitute the entire contract between the parties hereto with regard
to the subject matter hereof. It supersedes any other agreements,
representations or understandings, whether oral or written and whether express
or implied, which relate to the subject matter hereof.

SECTION H -- AMENDMENT AND RESCISSION.

         This Agreement may be amended or rescinded only by a writing signed by
the parties making specific reference to this Agreement.

SECTION I -- CHOICE OF LAW.

         This Agreement shall be governed by, and construed in accordance with,
the laws of the State of Maryland, as such laws are applied to contracts entered
into and performed in such State, without regard to the conflicts of law
principles thereof.

SECTION J -- Definitions.

1.  "AGREEMENT" means this Stock Purchase Agreement.

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2.  "BOARD OF DIRECTORS" means the Board of Directors of the Company, as
    constituted from time to time.

3.  "CHANGE IN CONTROL" shall have the meaning ascribed to it in the Employment
    Agreement.

4.  "CODE" means the Internal Revenue Code of 1986, as amended.

5.  "CONSULTANT" means a person who performs bona fide services for the
    Company, a Parent or a Subsidiary, as a consultant or advisor, excluding
    Employees and Outside Directors.

6.  "EMPLOYEE" means any individual who is a common-law employee of the Company,
    a Parent or a Subsidiary.

7.  "FAIR MARKET VALUE" shall have the meaning ascribed to such term under the
    Plan.

8.  "OUTSIDE DIRECTOR" means a member of the Board of Directors who is not an
    Employee.

9.  "PARENT" means any entity (other than the Company) in an unbroken chain
    of entities ending with the Company, if each of the entities other than
    the Company owns stock possessing 50% or more of the total combined
    voting power of all classes of stock in one of the other entities in such
    chain.

10. "PURCHASED SHARES" means the Shares purchased by the Purchaser pursuant to
    this Agreement.

11. "PURCHASE PRICE" means the amount for which one Share may be purchased by
    the Purchaser pursuant to this Agreement, as specified in Section A.2.

12. "REPURCHASE RIGHT" means the Company's right of repurchase described in
    Section B.

13. "RESTRICTED SHARE" means a Purchased Share that is subject to the Repurchase
    Right.

14. "SERVICE" means service as an Employee, Outside Director or Consultant.

15. "SHARE" means one share of Stock.

16. "STOCK" means the Class A Common Stock of the Company, with a par value
    of $0.01 per Share.

17. "Subsidiary" means any entity (other than the Company) in an unbroken
    chain of entities beginning with the Company, if each of the entities
    other than the last entity in the unbroken chain owns stock possessing
    50% or more of the total combined voting power of all classes of stock in
    one of the other entities in such chain.

                  IN WITNESS WHEREOF, each of the parties has executed this
Agreement, in the case of the Company by its duly authorized officer, on the day
and year first above written.

PURCHASER:                                          CHESAPEAKE BIOLOGICAL
                                                    LABORATORIES, INC.

/s/ Thomas P. Rice
-----------------------------
Thomas P. Rice                                       By: /s/ John T. Janssen
                                                     ---------------------------
                                                     Title: CFO

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