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                                                                 Exhibit 4.6


                        SECURITIES PURCHASE AGREEMENT

         This Securities Purchase Agreement is entered into and dated as of
December 19, 2003 (together with the Disclosure Schedules, this
"AGREEMENT"), among Zoltek Companies, Inc., a Missouri corporation (the
"COMPANY"), and the Investors identified on the signature pages hereto
(each, a "INVESTOR" and collectively, the "INVESTORS").

         WHEREAS, subject to the terms and conditions set forth in this
Agreement, the Company desires to borrow certain sums from each of the
Investors (each, a "LOAN" and, collectively, the "LOANS") and sell certain
securities to each of the Investors, and each Investor, severally and not
jointly, desires to make a Loan to the Company and purchase from the
Company, certain securities of the Company.

         NOW, THEREFORE, IN CONSIDERATION of the mutual covenants contained
in this Agreement, and for other good and valuable consideration the receipt
and adequacy of which are hereby acknowledged, the Company and the Investors
agree as follows:

                                 ARTICLE I.

                                 DEFINITIONS

         1.1. Definitions. In addition to the terms defined elsewhere in this
              -----------
Agreement, the following terms shall have the meanings set forth in this
Section 1.1:

                  "ACTION" means any action, suit, inquiry, notice of
         violation, proceeding (including any partial proceeding such as a
         deposition) or investigation pending or threatened in writing
         against or affecting the Company, any Subsidiary or any of their
         respective Subsidiaries or properties before or by any court,
         arbitrator, governmental or administrative agency, regulatory
         authority (federal, state, county, local or foreign), stock market,
         stock exchange or trading facility.

                  "AFFILIATE" means any Person that, directly or indirectly
         through one or more intermediaries, controls or is controlled by or
         is under common control with a Person, as such terms are used in
         and construed under Rule 144 under the Securities Act. With respect
         to an Investor, any investment fund or managed account that is
         managed on a discretionary basis by the same investment manager as
         such Investor will be deemed to be an Affiliate of such Investor.

                  "BANKRUPTCY EVENT" means any of the following events: (a)
         the Company or any Subsidiary commences a case or other proceeding
         under any bankruptcy, reorganization, arrangement, adjustment of
         debt, relief of debtors, dissolution, insolvency or liquidation or
         similar law of any jurisdiction relating to the Company or any
         Subsidiary thereof; (b) there is commenced against the Company or
         any Subsidiary any such case or proceeding that is not dismissed
         within 60 days after commencement; (c) the Company or any
         Subsidiary is adjudicated by a court of competent jurisdiction
         insolvent or bankrupt or any order of relief or other order
         approving any such case or proceeding is


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         entered; (d) the Company or any Subsidiary suffers any appointment
         of any custodian or the like for it or any substantial part of its
         property that is not discharged or stayed within 60 days; (e) under
         applicable bankruptcy law the Company or any Subsidiary makes a
         general assignment for the benefit of creditors; (f) the Company or
         any Subsidiary fails to pay, or states that it is unable to pay or is
         unable to pay, its debts generally as they become due; (g) the
         Company or any Subsidiary calls a meeting of its creditors with a
         view to arranging a composition, adjustment or restructuring of its
         debts; or (h) the Company or any Subsidiary, by any act or failure
         to act, expressly indicates its consent to, approval of or
         acquiescence in any of the foregoing or takes any corporate or
         other action for the purpose of effecting any of the foregoing.

                  "BUSINESS DAY" means any day except Saturday, Sunday and
         any day which shall be a federal legal holiday or a day on which
         banking institutions in the State of New York are authorized or
         required by law or other governmental action to close.

                  "COMPANY COUNSEL" means Thompson Coburn LLP.

                  "CAPITAL LEASE OBLIGATIONS" of any Person shall mean the
         obligations of such Person to pay rent or other amounts under any
         lease of (or other arrangement conveying the right to use) real or
         personal property, or a combination thereof, which obligations are
         required to be classified and accounted for as capital leases on a
         balance sheet of such Person under GAAP and, for the purposes of
         this Agreement, the amount of such obligations at any time shall be
         the capitalized amount thereof at such time determined in
         accordance with GAAP.

                  "CASH EQUIVALENTS" means:

                           (a) debt obligations and maturing within one year
from the date of acquisition thereof to the extent the principal thereof and
interest thereon is backed by the full faith and credit of the United States
of America;

                           (b) investments in commercial paper and maturing
within 180 days from the date of acquisition thereof and having, at such
date of acquisition, the highest credit rating obtainable from Standard &
Poor's Ratings Services, a division of The McGraw Hill Companies, or any
successor thereto, or from Moody's Investors Service, Inc. or any successor
thereto;

                           (c) investments in certificates of deposit,
banker's acceptances and time deposits maturing within 180 days from the
date of acquisition thereof issued or guaranteed by or placed with, and
money market deposit accounts issued or offered by, any domestic office of
any commercial bank organized under the laws of the United States of America
or any State thereof that has a combined capital and surplus and undivided
profits of not less than $500,000,000, in each case denominated in dollars;
and

                           (d) money market mutual funds, at least 90% of
the investments of which are in cash or investments contemplated by clauses
(a), (b) and (c) of this definition.

                                     2

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                  "CLOSING" means the closing of the Loans and purchases and
sale of Securities pursuant to Section 2.1.

                  "CLOSING DATE" means the Business Day immediately
         following the date on which all the conditions set forth in
         Sections 6.1 and 6.2 hereof are satisfied or waived by the
         appropriate party.

                  "CODE" means the Internal Revenue Code of 1986, as from
         time to time amended and any successor thereto and the rules and
         regulations promulgated from time to time thereunder.

                  "COMMISSION" means the U.S. Securities and Exchange
         Commission.

                  "COMMON STOCK" means the common stock of the Company,
         $0.01 par value per share, and any securities into which such
         common stock may hereafter be reclassified.

                  "COMMON STOCK EQUIVALENTS" means any securities of the
         Company or any Subsidiary which entitle the holder thereof to
         acquire Common Stock at any time, including without limitation, any
         debt, preferred stock, rights, options, warrants or other
         instrument that is at any time convertible into or exchangeable
         for, or otherwise entitles the holder thereof to receive, Common
         Stock or other securities that entitle the holder to receive,
         directly or indirectly, Common Stock.

                  "DEBENTURES" means the convertible debentures due on the
         30th month anniversary of the Closing Date issuable by the Company
         to the Investors pursuant to terms hereof, in the form of Exhibit A
                                                                   ---------
         hereto.

                  "EFFECTIVE DATE" means the date that a Registration
         Statement is first declared effective by the Commission.

                  "ELIGIBLE MARKET" means any of the New York Stock
         Exchange, the American Stock Exchange, the Nasdaq National Market
         or the Nasdaq SmallCap Market.

                  "EQUITY INTEREST" means (i) shares of corporate stock,
         partnership interests, membership interests and any other interest
         that confers on a Person the right to receive a share of the
         profits and losses of, or a distribution of the assets of, the
         issuing Person and (ii) all warrants, options or other rights to
         acquire any Equity Interest set forth in clause (i) of this defined
         term.

                  "EXCHANGE ACT" means the Securities Exchange Act of 1934,
as amended.

                  "EVENT OF DEFAULT" has the meaning assigned to such term
in the Debentures.

                  "GAAP" means United States generally accepted accounting
         principals as in effect from time to time applied on a consistent
         basis during the periods involved.

                  "GUARANTEE" of or by any Person shall mean any obligation,
         contingent or otherwise, of such Person guaranteeing or having the
         economic effect of guaranteeing


                                     3

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         any Indebtedness of any other Person (the "primary obligor") in any
         manner, whether directly or indirectly, and including any
         obligation of such Person, direct or indirect, (a) to purchase or
         pay (or advance or supply funds for the purchase or payment of)
         such Indebtedness or to purchase (or to advance or supply funds for
         the purchase of) any security for the payment of such Indebtedness,
         (b) to purchase property, securities or services for the purpose of
         assuring the owner of such Indebtedness of the payment of such
         Indebtedness or (c) to maintain working capital, equity capital or
         other financial statement condition or liquidity of the primary
         obligor so as to enable the primary obligor to pay such
         Indebtedness, provided, that the term Guarantee shall not include
                       --------
         endorsements for collection or deposit, in either case in the
         ordinary course of business.

                  "INDEBTEDNESS" of any Person shall mean, without
         duplication, (a) all obligations of such Person for borrowed money
         or with respect to deposits or advances of any kind, (b) all
         obligations of such Person evidenced by bonds, debentures, notes or
         similar instruments, (c) all obligations of such Person upon which
         interest charges are customarily paid, (d) all obligations of such
         Person under conditional sale or other title retention agreements
         relating to property or assets purchased by such Person, (e) all
         obligations of such Person issued or assumed as the deferred
         purchase price of property or services, (f) all Indebtedness of
         others secured by (or for which the holder of such Indebtedness has
         an existing right, contingent or otherwise, to be secured by) any
         Lien on property owned or acquired by such Person, whether or not
         the obligations secured thereby have been assumed, (g) all
         Guarantees by such Person of Indebtedness of others, (h) all
         Capital Lease Obligations of such Person, (i) all obligations of
         such Person in respect of interest rate protection agreements,
         foreign currency exchange agreements or other interest or exchange
         rate hedging arrangements that exceed amounts necessary to hedge
         the Company's cross-currency exposure and (j) all obligations of
         such Person as an account party in respect of letters of credit and
         bankers' acceptances. The Indebtedness of any Person shall include
         the Indebtedness of any partnership in which such Person is a
         general partner.

                  "INVESTOR PERCENTAGE" means, with respect to an Investor,
         the percentage equal to the product of (x) a fraction, the
         numerator of which shall be the Loan Amount loaned by such Investor
         on the Closing Date and the denominator of which shall be the
         aggregate Loan Amounts loaned by all Investors on the Closing Date
         times (y) 100.

                  "LIEN" means any lien, charge, claim, security interest,
         encumbrance, right of first refusal or other restriction.

                  "LOAN AMOUNT" means, with respect to each Investor, the
         loan amount indicated below such Investor's name on its signature
         page of this Agreement.

                  "LOSSES" means any and all losses, claims, damages,
         liabilities, settlement costs and expenses, including without
         limitation costs of preparation of legal action, investigation and
         reasonable attorneys' fees.

                                     4

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                  "PERSON" means an individual or corporation, partnership,
         trust, incorporated or unincorporated association, joint venture,
         limited liability company, joint stock company, government (or an
         agency or subdivision thereof) or other entity of any kind.

                  "PROCEEDING" means an action, claim, suit, investigation
         or proceeding (including, without limitation, an investigation or
         partial proceeding, such as a deposition), whether commenced or
         threatened.

                  "REGISTRATION STATEMENT" means one or more registration
         statements meeting the requirements of the Registration Rights
         Agreement and covering the resale of Underlying Shares by the
         Investors who shall be named "selling shareholders" thereunder.

                  "REGISTRATION RIGHTS AGREEMENT" means the Registration
         Rights Agreement, dated as of the date of this Agreement, among the
         Company and the Investors, in the form of Exhibit B hereto.
                                                   ---------

                  "REQUIRED MINIMUM" means, as of any date, the maximum
         aggregate number of shares of Common Stock then issued or
         potentially issuable in the future pursuant to the Transaction
         Documents, including any Underlying Shares issuable upon conversion
         in full of all Debentures and issuable on account of interest
         thereunder, and upon exercise of the Warrants, ignoring for all
         such purposes any conversion or exercise caps contained in the
         Warrants or Debentures assuming that: (a) any previously
         unconverted Debentures and unexercised Warrants are held until the
         maturity or expiration date thereof, and all interest on the
         Debentures is paid in shares of Common Stock and (b) the Conversion
         Price and Exercise Price at all times on and after the date of
         determination equals 50% of the actual Conversion Price or Exercise
         on the Trading Day immediately prior to the date of determination.

                  "RESTRICTED PAYMENT" means, as to any Person, (a) any
         dividend or other distribution by such Person (whether in cash,
         securities or other property) with respect to any Equity Interests
         of such Person, (b) any payment (whether in cash, securities or
         other property), including any sinking fund or similar deposit, on
         account of the purchase, redemption, retirement, acquisition,
         cancellation or termination of any such Equity Interest, (c) any
         payment of principal or interest or any purchase, redemption,
         retirement, acquisition or defeasance with respect to any
         Indebtedness of such Person which is subordinated to the payment of
         the Obligations, (d) the acquisition for value by such Person of
         any Equity Interests issued by such Person or any other Person that
         controls such Person and (e) any payment by such Person to its
         officers or directors other than in compliance with existing
         Company stock option plans and salaries in the ordinary course of
         business.

                  "RULE 144" means Rule 144 promulgated by the Commission
         pursuant to the Securities Act, as such Rule may be amended from
         time to time, or any similar rule or regulation hereafter adopted
         by the Commission having substantially the same effect as such
         Rule.

                                     5

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                  "SECURITIES" means the Debentures, the Warrants and the
         Underlying Shares issuable under the Debentures and the Warrants.

                  "SECURITIES ACT" means the Securities Act of 1933, as
         amended.

                  "STRATEGIC TRANSACTION" means a transaction or
         relationship in which (1) the Company issues shares of Common Stock
         to a Person which the Board of Directors of the Company determines
         in good faith is, itself or through its Subsidiaries, an operating
         company in a business synergistic with the business of the Company
         and (2) the Company expects to receive benefits in addition to the
         investment of funds, but shall not include a transaction in which
         the Company issues securities primarily for the purpose of raising
         capital or to an entity whose primary business is investing in
         securities.

                  "SUBSIDIARY" means any "significant subsidiary" of the
         Company as defined in Rule 1-02(w) of Regulation S-X promulgated
         under the Exchange Act.

                  "TRADING DAY" means (i) a day on which the Common Stock is
         traded on an Eligible Market, or (ii) if the Common Stock is not
         listed on an Eligible Market, a day on which the Common Stock is
         traded in the over-the-counter market, as reported by the OTC
         Bulletin Board or the National Quotation Bureau Incorporated, or
         (iii) if the Common Stock is not quoted on the OTC Bulletin Board,
         a day on which the Common Stock is quoted in the over-the-counter
         market as reported by the National Quotation Bureau Incorporated
         (or any similar organization or agency succeeding to its functions
         of reporting prices); provided, that in the event that the Common
         Stock is not listed or quoted as set forth in (i), (ii) and (iii)
         hereof, then Trading Day shall mean a Business Day.

                  "TRADING MARKET" means Nasdaq National Market or any other
         Eligible Market on which the Common Stock is then listed or quoted.

                  "TRANSACTION DOCUMENTS" means this Agreement, the
         Debentures, the Warrants, the Registration Rights Agreement, and
         any other documents or agreements executed or delivered in
         connection with the transactions contemplated hereunder.

                  "UNDERLYING SHARES" means the shares of Common Stock
         issuable upon conversion of the Debentures, as payment of interest
         thereunder, exercise of the Warrants, and in satisfaction of any
         other obligation of the Company to issue shares of Common Stock
         pursuant to the Transaction Documents.

                  "WARRANTS" means the Common Stock purchase warrants in the
         form of Exhibit C, issuable pursuant to Section 2.2(a)(iii).
                 ---------

                                ARTICLE II.

                              PURCHASE AND SALE

         2.1.     Closing. Subject to the terms and conditions set forth in
                  -------
         this Agreement, at the Closing the Company shall issue and sell to
         the Investors, and the Investors shall, severally and


                                     6

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         not jointly, purchase from the Company, the Debentures and
         Warrants. The Closing shall take place at the offices of Bryan Cave
         LLP, 1290 Avenue of the Americas, New York, NY 10104 on the date
         this Agreement is executed and delivered by the parties or at such
         other location or time as the parties may agree.

         2.2.     Closing Deliveries.
                  ------------------

                  (a)      At the Closing, the Company shall deliver or cause
to be delivered to each Investor the following (the "COMPANY DELIVERABLES"):

                           (i)      this Agreement duly executed by the Company;

                           (ii)     Debentures in the aggregate principal
         amount of the Loan Amount indicated below such Investor's name on its
         signature page of this Agreement, registered in the name of such
         Investor;

                           (iii)    a Warrant, registered in the name of such
         Investor, pursuant to which such Investor shall have the right to
         acquire 25% of the number of shares of Common Stock issuable upon
         an assumed conversion in full of the Debenture issuable to the
         Investor in accordance with Section 2.2(a)(ii) (assuming for such
         purpose that the conversion price equals the closing sales price of
         the Common Stock on the Trading Day immediately prior to the
         Closing Date);

                           (iv)     the Registration Rights Agreement, duly
         executed by the Company;

                           (v)      the legal opinion of Company Counsel,
         in agreed  form, addressed to such Investor; and

                           (vi)     any other document reasonably requested by
         such Investor.

                  (b)      At the Closing, each Investor shall deliver or cause
to be delivered to the Company the following:

                           (i)      the Loan Amount indicated below such
         Investor's name on the signature page of this Agreement, in United
         States dollars and in immediately available funds, by wire transfer
         to an account designated in writing by the Company for such
         purpose;

                           (ii)     the Registration Rights Agreement, duly
         executed by such Investor; and

                           (iii)    this Agreement duly executed by such
         Investor.

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                                ARTICLE III.

                       REPRESENTATIONS AND WARRANTIES

         3.1.     Representations and Warranties of the Company. Subject to the
                  ---------------------------------------------
qualifications and disclosures set forth beside the specific reference to
this Agreement in the Disclosure Schedule (the parties hereto agreeing that
a reference in the Disclosure Schedule to a particular Section shall only
apply to the representation in such section), the Company hereby makes the
following representations and warranties to each Investor:

                  (a)      Subsidiaries. The Company does not directly or
                           ------------
indirectly control or own any interest in any Subsidiary, other than as
listed in Section 3.1(a) of the Disclosure Schedule. Except as disclosed in
Section 3.1(a) of the Disclosure Schedule, the Company owns, directly or
indirectly, all of the capital stock of each Subsidiary free and clear of
any Lien, and all the issued and outstanding shares of capital stock of each
Subsidiary are validly issued and are fully paid, non-assessable and free of
preemptive and similar rights.

                  (b)      Organization and Qualification. Each of the Company
                           ------------------------------
and each Subsidiary is an entity duly incorporated or otherwise organized,
validly existing and in good standing under the laws of the jurisdiction of
its incorporation or organization (as applicable), with the requisite power
and authority to own and use its properties and assets and to carry on its
business as currently conducted. Neither the Company nor any Subsidiary is
in violation of any of the provisions of its respective certificate or
articles of incorporation, bylaws or other organizational or charter
documents. Each of the Company and each Subsidiary is duly qualified to
conduct business and is in good standing as a foreign corporation or other
entity in each jurisdiction in which the nature of the business conducted or
property owned by it makes such qualification necessary, except where the
failure to be so qualified or in good standing, as the case may be, could
not, individually or in the aggregate, have or reasonably be expected to
result in (i) an adverse effect on the legality, validity or enforceability
of any Transaction Document, (ii) a material and adverse effect on the
results of operations, assets, prospects, business or condition (financial
or otherwise) of the Company and the Subsidiaries, taken as a whole, or
(iii) an adverse impairment to the Company ability to perform on a timely
basis its obligations under any Transaction Document (any of (i), (ii) or
(iii), a "MATERIAL ADVERSE EFFECT").

                  (c)      Authorization; Enforcement. The Company has the
                           --------------------------
requisite corporate power and authority to enter into and to consummate the
transactions contemplated by each of the Transaction Documents and otherwise
to carry out its obligations thereunder. The execution and delivery of each
of the Transaction Documents by the Company and the consummation by it of
the transactions contemplated thereunder have been duly authorized by all
necessary action on the part of the Company and no further consent or action
is required by the Company, its Board of Directors or its shareholders. Each
of the Transaction Documents has been (or upon delivery will be) duly
executed by the Company and, when delivered in accordance with the terms
hereof, will constitute the valid and binding obligation of the Company
enforceable against the Company in accordance with its terms.

                  (d)      No Conflicts. The execution, delivery and
                           ------------
performance of the Transaction Documents by the Company and the consummation
by the Company of the transactions


                                     8

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contemplated thereby do not and will not (i) conflict with or violate any
provision of the Company's or any Subsidiary's certificate or articles of
incorporation, bylaws or other organizational or charter documents, or (ii)
conflict with, or constitute a default (or an event that with notice or
lapse of time or both would become a default) under, or give to others any
rights of termination, amendment, acceleration or cancellation (with or
without notice, lapse of time or both) of, any agreement, credit facility,
debt or other instrument (evidencing a Company or Subsidiary debt or
otherwise) or other understanding to which the Company or any Subsidiary is
a party or by which any property or asset of the Company or any Subsidiary
is bound or affected, or (iii) result in a violation of any law, rule,
regulation, order, judgment, injunction, decree or other restriction of any
court or governmental authority to which the Company or a Subsidiary is
subject (including federal and state securities laws and regulations) and
the rules and regulations of any self-regulatory organization to which the
Company or its securities are subject, or by which any property or asset of
the Company or a Subsidiary is bound or affected; except in the case of each
of clauses (ii) and (iii), such as could not, individually or in the
aggregate, have or reasonably be expected to result in a Material Adverse
Effect. Payments of cash on account of interest under the Debentures, upon
any Event of Default under the Debentures, as a result of liquidated damages
under any Transaction Document or upon a Buy-In under a Warrant will not
require the consent of any lender to or creditor of the Company or any
Subsidiary (under a credit facility, loan agreement or otherwise) and will
not result in a default under any such credit facilities, loan or other
agreements.

                  (e)      Filings, Consents and Approvals. The Company is
                           -------------------------------
not required to obtain any consent, waiver, authorization or order of, give
any notice to, or make any filing or registration with, any court or other
federal, state, local or other governmental authority or other Person in
connection with the execution, delivery and performance by the Company of
the Transaction Documents, other than (i) the filing with the Commission of
one or more Registration Statements in accordance with the requirements
Registration Rights Agreement and (ii) the application(s) to the Trading
Market on which the Common Stock is listed for trading for the listing of
the Underlying Shares for trading thereon in the time and manner required
thereby which have been made and obtained prior to the Closing Date.

                  (f)      Issuance of the Securities. The Securities have
                           --------------------------
been duly authorized and, when issued and paid for in accordance with the
Transaction Documents, will be duly and validly issued, fully paid and
nonassessable, free and clear of all Liens. The Company has reserved from
its duly authorized capital stock a number of shares of Common Stock
issuable upon conversion of the Debentures (as may be issued on account of
interest thereunder) and exercise of the Warrants, which number of reserved
shares is not less than the Required Minimum calculated as of the date
hereof.

                  (g)      Capitalization. The number of shares and type of
                           --------------
all authorized, issued and outstanding capital stock of the Company, and all
shares of Common Stock reserved for issuance under the Company's various
option and incentive plans, is set forth in Section 3.1(g) of the Disclosure
Schedule. No securities of the Company are entitled to preemptive or similar
rights, and no Person has any right of first refusal, preemptive right,
right of participation, or any similar right to participate in the
transactions contemplated by the Transaction Documents. Except as a result
of the purchase and sale of the Securities, there are no outstanding
options, warrants, scrip rights to subscribe to, calls or commitments of any
character whatsoever relating

                                     9

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to, or securities, rights or obligations convertible into or exchangeable
for, or giving any Person any right to subscribe for or acquire, any shares
of Common Stock, or contract, commitment, understanding or arrangement by
which the Company or any Subsidiary is or may become bound to issue
additional shares of Common Stock, or securities or rights convertible or
exchangeable into shares of Common Stock. The issue and sale of the
Securities will not, immediately or with the passage of time, obligate the
Company to issue shares of Common Stock or other securities to any Person
(other than the Investors) and will not result in a right of any holder of
Company securities to adjust the exercise, conversion, exchange or reset
price under such securities.

                  (h)      SEC Reports; Financial Statements. The Company
                           ---------------------------------
has filed all reports required to be filed by it under the Exchange Act,
including pursuant to Section 13(a) or 15(d) thereof, for the twelve months
preceding the date hereof (or such shorter period as the Company was
required by law to file such material) (the foregoing materials being
collectively referred to herein as the "SEC REPORTS" and, together with this
Agreement and Section 3.1(h) of the Disclosure Schedule to this Agreement,
the "DISCLOSURE MATERIALS") on a timely basis or has timely filed a valid
extension of such time of filing and has filed any such SEC Reports prior to
the expiration of any such extension. As of their respective dates, the SEC
Reports complied in all material respects with the requirements of the
Securities Act and the Exchange Act and the rules and regulations of the
Commission promulgated thereunder, and none of the SEC Reports, when filed,
contained any untrue statement of a material fact or omitted to state a
material fact required to be stated therein or necessary in order to make
the statements therein, in light of the circumstances under which they were
made, not misleading. The financial statements of the Company included in
the SEC Reports comply in all material respects with applicable accounting
requirements and the rules and regulations of the Commission with respect
thereto as in effect at the time of filing. Such financial statements have
been prepared in accordance GAAP, except as may be otherwise specified in
such financial statements or the notes thereto, and fairly present in all
material respects the financial position of the Company and its consolidated
Subsidiaries as of and for the dates thereof and the results of operations
and cash flows for the periods then ended, subject, in the case of unaudited
statements, to normal, immaterial, year-end audit adjustments. All material
agreements to which the Company or any Subsidiary is a party or to which the
property or assets of the Company or any Subsidiary are subject are included
as part of or specifically identified in the SEC Reports.

                  (i)      Press Releases. The press releases disseminated
                           --------------
by the Company during the two (2) years preceding the date of this Agreement
taken as a whole do not contain any untrue statement of a material fact or
omit to state a material fact required to be stated therein or necessary in
order to make the statements therein, in light of the circumstances under
which they were made, not misleading.

                  (j)      Material Changes. Since the date of the latest
                           ----------------
audited financial statements included within the SEC Reports, except as
specifically disclosed in the SEC Reports, (i) there has been no event,
occurrence or development that has had or that could reasonably be expected
to result in a Material Adverse Effect, (ii) the Company has not incurred
any liabilities (contingent or otherwise) other than (A) trade payables and
accrued expenses incurred in the ordinary course of business consistent with
past practice and (B) liabilities not required to be reflected in the
Company's financial statements pursuant to GAAP or required to be disclosed
in filings made with the Commission, (iii) the Company has not altered its
method of accounting or


                                     10

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the identity of its auditors, (iv) the Company has not declared or made any
dividend or distribution of cash or other property to its shareholders or
purchased, redeemed or made any agreements to purchase or redeem any shares
of its capital stock, and (v) the Company has not issued any equity
securities to any officer, director or Affiliate, except pursuant to
existing Company stock incentive plans. Except as noted in the Company's SEC
Reports, the Company does not have pending before the Commission any request
for confidential treatment of information.

                  (k)      Litigation. There is no Action which (i) adversely
                           ----------
affects or challenges the legality, validity or enforceability of any of the
Transaction Documents or the Securities or (ii) except as otherwise set
forth in the SEC Reports, could, if there were an unfavorable decision,
individually or in the aggregate, have or reasonably be expected to result
in a Material Adverse Effect. Neither the Company nor any Subsidiary, nor
any director or officer thereof, is or has been the subject of any Action
involving a claim of violation of or liability under federal or state
securities laws or a claim of breach of fiduciary duty. There has not been,
and to the knowledge of the Company, there is not pending or contemplated,
any investigation by the Commission involving the Company or any current or
former director or officer of the Company. The Commission has not issued any
stop order or other order suspending the effectiveness of any registration
statement filed by the Company or any Subsidiary under the Exchange Act or
the Securities Act.

                  (l)      Labor Relations. No material labor dispute exists
                           ---------------
or, to the knowledge of the Company, is imminent with respect to any of the
employees of the Company.

                  (m)      Compliance. Neither the Company nor any Subsidiary
                           ----------
(i) is in default under or in violation of (and no event has occurred that
has not been waived that, with notice or lapse of time or both, would result
in a default by the Company or any Subsidiary under), nor has the Company or
any Subsidiary received notice of a claim that it is in default under or
that it is in violation of, any indenture, loan or credit agreement or any
other agreement or instrument to which it is a party or by which it or any
of its properties is bound (whether or not such default or violation has
been waived), (ii) is in violation of any order of any court, arbitrator or
governmental body, or (iii) is or has been in violation of any statute, rule
or regulation of any governmental authority, including without limitation
all foreign, federal, state and local laws relating to taxes, environmental
protection, occupational health and safety, product quality and safety and
employment and labor matters, except in each case as could not, individually
or in the aggregate, have or could reasonably be expected to result in a
Material Adverse Effect. The Company is in compliance with the applicable
requirements of the Sarbanes-Oxley Act of 2002, as amended, and the rules
and regulations thereunder promulgated by the Commission, except where such
noncompliance could not have or reasonably be expected to result in a
Material Adverse Effect.

                  (n)      Regulatory Permits. The Company and the Subsidiaries
                           ------------------
possess all certificates, authorizations and permits issued by the
appropriate federal, state, local or foreign regulatory authorities
necessary to conduct their respective businesses as described in the SEC
Reports, except where the failure to possess such permits could not,
individually or in the aggregate, have or could reasonably be expected to
result in a Material Adverse Effect

                                     11

<PAGE>
<PAGE>

("MATERIAL PERMITS"), and neither the Company nor any Subsidiary has
received any notice of proceedings relating to the revocation or
modification of any Material Permit.

                  (o)      Title to Assets. The Company and the Subsidiaries
                           ---------------
have good and marketable title in fee simple to all real property owned by
them that is material to the business of the Company and the Subsidiaries
and good and marketable title in all personal property owned by them that is
material to the business of the Company and the Subsidiaries, in each case
free and clear of all Liens, except for Liens as do not materially affect
the value of such property and do not materially interfere with the use made
and proposed to be made of such property by the Company and the
Subsidiaries. Any real property and facilities held under lease by the
Company and the Subsidiaries are held by them under valid, subsisting and
enforceable leases of which the Company and the Subsidiaries are in
compliance.

                  (p)      Patents and Trademarks. The Company and the
                           ----------------------
Subsidiaries have, or have rights to use, all patents, patent applications,
trademarks, trademark applications, service marks, trade names, copyrights,
licenses and other similar rights that are necessary or material for use in
connection with their respective businesses as described in the SEC Reports
and which the failure to so have could not, individually or in the
aggregate, have or reasonably be expected to result in a Material Adverse
Effect (collectively, the "INTELLECTUAL PROPERTY RIGHTS"). Neither the
Company nor any Subsidiary has received a written notice that the
Intellectual Property Rights used by the Company or any Subsidiary violates
or infringes upon the rights of any Person. Except as set forth in the SEC
Reports, to the knowledge of the Company, all such Intellectual Property
Rights are enforceable and there is no existing infringement by another
Person of any of the Intellectual Property Rights.

                  (q)      Insurance. The Company and the Subsidiaries are
                           ---------
insured by insurers of recognized financial responsibility against such
losses and risks and in such amounts as are prudent and customary in the
businesses in which the Company and the Subsidiaries are engaged. Neither
the Company nor any Subsidiary has any reason to believe that it will not be
able to renew its existing insurance coverage as and when such coverage
expires or to obtain similar coverage from similar insurers as may be
necessary to continue its business without a significant increase in cost.

                  (r)      Transactions With Affiliates and Employees. Except
                           ------------------------------------------
as set forth in SEC Reports, none of the officers or directors of the
Company and, to the knowledge of the Company, none of the employees of the
Company is presently a party to any transaction with the Company or any
Subsidiary (other than for services as employees, officers and directors),
including any contract, agreement or other arrangement providing for the
furnishing of services to or by, providing for rental of real or personal
property to or from, or otherwise requiring payments to or from any officer,
director or such employee or, to the knowledge of the Company, any entity in
which any officer, director, or any such employee has a substantial interest
or is an officer, director, trustee or partner.

                  (s)      Internal Accounting Controls. The Company and the
                           ----------------------------
Subsidiaries maintain a system of internal accounting controls sufficient to
provide reasonable assurance that (i) transactions are executed in
accordance with management's general or specific authorizations, (ii)
transactions are recorded as necessary to permit preparation of financial
statements in


                                     12

<PAGE>
<PAGE>

conformity with generally accepted accounting principles and to maintain
asset accountability, (iii) access to assets is permitted only in accordance
with management's general or specific authorization, and (iv) the recorded
accountability for assets is compared with the existing assets at reasonable
intervals and appropriate action is taken with respect to any differences.
The Company has established disclosure controls and procedures (as defined
in Exchange Act Rules 13a-14 and 15d-14) for the Company and designed such
disclosure controls and procedures to ensure that material information
relating to the Company, including its Subsidiaries, is made known to the
certifying officers by others within those entities, particularly during the
period in which the Company's Form 10-K or 10-Q, as the case may be, is
being prepared. The Company's certifying officers have evaluated the
effectiveness of the Company's controls and procedures as of a date within
90 days prior to the filing date of the Form 10-Q for the quarter ended June
30, 2003 (such date, the "EVALUATION DATE"). The Company presented in its
most recently filed Form 10-K or Form 10-Q the conclusions of the certifying
officers about the effectiveness of the disclosure controls and procedures
based on their evaluations as of the Evaluation Date. Since the Evaluation
Date, there have been no significant changes in the Company's internal
controls (as such term is defined in Item 307(b) of Regulation S-K under the
Exchange Act) or, to the Company's knowledge, in other factors that could
significantly affect the Company's internal controls.

                  (t)      Solvency. Based on the financial condition of the
                           --------
Company as of the Closing Date (and assuming that the Closing shall have
occurred), (i) the Company's fair saleable value of its assets exceeds the
amount that will be required to be paid on or in respect of the Company's
existing debts and other liabilities (including known contingent
liabilities) as they mature; (ii) the Company's assets do not constitute
unreasonably small capital to carry on its business for the current fiscal
year as now conducted and as proposed to be conducted including its capital
needs taking into account the particular capital requirements of the
business conducted by the Company, and projected capital requirements and
capital availability thereof; and (iii) the current cash flow of the
Company, together with the proceeds the Company would receive, were it to
liquidate all of its assets, after taking into account all anticipated uses
of the cash, would be sufficient to pay all amounts on or in respect of its
debt when such amounts are required to be paid. The Company does not intend
to incur debts beyond its ability to pay such debts as they mature (taking
into account the timing and amounts of cash to be payable on or in respect
of its debt).

                  (u)      Certain Fees. Except as set forth in Section 3.1(u)
                           ------------                         --------------
of the Disclosure Schedule, no brokerage or finder's fees or commissions are
or will be payable by the Company to any broker, financial advisor or
consultant, finder, placement agent, investment banker, bank or other Person
with respect to the transactions contemplated by this Agreement. The
Investors shall have no obligation with respect to any fees or with respect
to any claims (other than such fees or commissions owed by a Investor
pursuant to written agreements executed by such Investor which fees or
commissions shall be the sole responsibility of such Investor) made by or on
behalf of other Persons for fees of a type contemplated in this Section that
may be due in connection with the transactions contemplated by this
Agreement.

                  (v)      Certain Registration Matters. Assuming the
                           ----------------------------
accuracy of the Investors' representations and warranties set forth in
Sections 3.2(b)-(e), no registration under the Securities Act is required
for the offer and sale of the Securities by the Company to the Investors
under the


                                     13

<PAGE>
<PAGE>

Transaction Documents. The Company is eligible to register the resale of its
Common Stock for resale by the Investors under Form S-3 promulgated under
the Securities Act. The Company has not granted or agreed to grant to any
Person any rights (including "piggy-back" registration rights) to have any
securities of the Company registered with the Commission or any other
governmental authority that have not been satisfied.

                  (w)      Listing and Maintenance Requirements. Except as
                           ------------------------------------
specified in the SEC Reports, the Company has not, in the two years
preceding the date hereof, received notice from any Eligible Market to the
effect that the Company is not in compliance with the listing or maintenance
requirements thereof. The Company is, and has no reason to believe that it
will not in the foreseeable future continue to be, in compliance with the
listing and maintenance requirements for continued listing of the Common
Stock on the Trading Market. The issuance and sale of the Securities under
the Transaction Documents does not contravene the rules and regulations of
the Trading Market, and no approval of the shareholders of the Company
thereunder is required for the Company to issue and deliver to the Investors
the maximum number of Securities contemplated by Transaction Documents,
including as may be required pursuant to Nasdaq Rule Filing SR-NASD-2003-40
(March 14, 2003) concerning shareholder approval requirements when officers
and directors participate in discounted private placements and Nasdaq Rule
Filing SR-NASD-2003-61 (March 28, 2003) concerning shareholder approval
requirements in connection with a change of control.

                  (x)      Investment Company. The Company is not, and is
                           ------------------
not an Affiliate of, an "investment company" within the meaning of the
Investment Company Act of 1940, as amended.

                  (y)      Application of Takeover Protections. The Company
                           -----------------------------------
and its Board of Directors have taken all necessary action, if any, in order
to render inapplicable any control share acquisition, business combination,
poison pill (including any distribution under a rights agreement) or other
similar anti-takeover provision under the Company's Articles of
Incorporation (or similar charter documents) or the laws of its state of
incorporation that is or could become applicable to the Investors as a
result of the Investors and the Company fulfilling their obligations or
exercising their rights under the Transaction Documents, including without
limitation the Company's issuance of the Securities and the Investors'
ownership of the Securities.

                  (z)      No Additional Agreements. The Company that does
                           ------------------------
not have any agreement or understanding with any Investor with respect to
the transactions contemplated by the Transaction Documents other than as
specified in this Agreement, except that any officer or director who
participates in this transaction as a Investor shall not be entitled to any
anti-dilution protection (other than on account of stock splits, stock
combinations and similar events) under the Debentures or the Warrants
acquired by them or their Affiliates so as not to violate Nasdaq Rule Filing
SR-NASD-2003-40 (March 14, 2003).

                  (aa)     Disclosure. The Company confirms that neither
                           ----------
it nor any Person acting on its behalf has provided any of the Investors or
their agents or counsel with any information that the Company believes
constitutes material, non-public information. The Company understands and
confirms that the Investors will rely on the foregoing representations and

                                     14

<PAGE>
<PAGE>

covenants in effecting transactions in securities of the Company. All
disclosure provided to the Investors regarding the Company, its business and
the transactions contemplated hereby, furnished by or on behalf of the
Company (including the Company's representations and warranties set forth in
this Agreement and the Disclosure Schedule) are true and correct and do not
contain any untrue statement of a material fact or omit to state any
material fact necessary in order to make the statements made therein, in
light of the circumstances under which they were made, not misleading.

                  (bb)     Acknowledgment Regarding Investors' Purchase of
                           -----------------------------------------------
Securities. The Company acknowledges and agrees that each of the Investors
----------
is acting solely in the capacity of an arm's length Investor with respect to
the Transaction Documents and the transactions contemplated hereby. The
Company further acknowledges that no Investor is acting as a financial
advisor or fiduciary of the Company (or in any similar capacity) with
respect to the Transaction Documents and the transactions contemplated
hereby and any advice given by any Investor or any of their respective
representatives or agents in connection with the Transaction Documents and
the transactions contemplated hereby is merely incidental to the Investors'
purchase of the Securities. The Company further represents to each Investor
that the Company's decision to enter into this Agreement has been based
solely on the independent evaluation by the Company and its representatives.

         3.2.     Representations and Warranties of the Investors. Each
                  -----------------------------------------------
Investor, for itself and for no other Investor, hereby represents and
warrants to the Company as follows:

                  (a)      Organization; Authority. Such Investor is an
                           -----------------------
entity duly organized, validly existing and in good standing under the laws
of the jurisdiction of its organization with the requisite corporate or
partnership power and authority to enter into and to consummate the
transactions contemplated by the applicable Transaction Documents and
otherwise to carry out its obligations thereunder. The execution, delivery
and performance by such Investor of the transactions contemplated by this
Agreement has been duly authorized by all necessary corporate or, if such
Investor is not a corporation, such partnership, limited liability Company
or other applicable like action, on the part of such Investor. Each of this
Agreement and the Registration Rights Agreement has been duly executed by
such Investor, and when delivered by such Investor in accordance with terms
hereof, will constitute the valid and legally binding obligation of such
Investor, enforceable against it in accordance with its terms.

                  (b)      Investment Intent. Such Investor is acquiring
                           -----------------
the Securities as principal for its own account for investment purposes only
and not with a view to or for distributing or reselling such Securities or
any part thereof, without prejudice, however, to such Investor's right at
all times to sell or otherwise dispose of all or any part of such Securities
in compliance with applicable federal and state securities laws. Subject to
the immediately preceding sentence, nothing contained herein shall be deemed
a representation or warranty by such Investor to hold the Securities for any
period of time. Such Investor is acquiring the Securities hereunder in the
ordinary course of its business. Such Investor does not have any agreement
or understanding, directly or indirectly, with any Person to distribute any
of the Securities.

                  (c)      Investor Status. At the time such Investor was
                           ---------------
offered the Securities, it was, and at the date hereof, it is, an
"accredited investor" as defined in Rule 501(a) under the


                                     15

<PAGE>
<PAGE>

Securities Act. Such Investor is not a registered broker-dealer under
Section 15 of the Exchange Act.

                  (d)      General Solicitation. Such Investor is not
                           --------------------
purchasing the Securities as a result of any advertisement, article, notice
or other communication regarding the Securities published in any newspaper,
magazine or similar media or broadcast over television or radio or presented
at any seminar or any other general solicitation or general advertisement.

                  (e)      Access to Information. Such Investor acknowledges
                           ---------------------
that it has reviewed the Disclosure Materials and has been afforded (i) the
opportunity to ask such questions as it has deemed necessary of, and to
receive answers from, representatives of the Company concerning the terms
and conditions of the offering of the Securities and the merits and risks of
investing in the Securities; (ii) access to information about the Company
and the Subsidiaries and their respective financial condition, results of
operations, business, properties, management and prospects sufficient to
enable it to evaluate its investment; and (iii) the opportunity to obtain
such additional information that the Company possesses or can acquire
without unreasonable effort or expense that is necessary to make an informed
investment decision with respect to the investment. Neither such inquiries
nor any other investigation conducted by or on behalf of such Investor or
its representatives or counsel shall modify, amend or affect such Investor's
right to rely on the truth, accuracy and completeness of the Disclosure
Materials and the Company's representations and warranties contained in the
Transaction Documents.

                  (f)      Limited Ownership. The purchase by such Investor
                           -----------------
of the Securities issuable to it at the Closing (including the Underlying
Shares that would be issuable upon the conversion and exercise of such
Securities) will not result in such Investor (individually or together with
other Person with whom such Investor has identified, or will have
identified, itself as part of a "group" in a public filing made with the
Commission involving the Company's securities) acquiring, or obtaining the
right to acquire, in excess of 19.999% of the Common Stock or the voting
power of the Company on a post transaction basis that assumes that the
Closing shall have occurred. Such Investor does not presently intend to,
alone or together with others, make a public filing with the Commission to
disclose that it has (or that it together with such other Persons have)
acquired, or obtained the right to acquire, as a result of the Closing (when
added to any other securities of the Company that it or they then own or
have the right to acquire), in excess of 19.999% of the Common Stock or the
voting power of the Company on a post transaction basis that assumes that
the Closing shall have occurred.

                  (g)      Independent Investment Decision. Such Investor has
                           -------------------------------
independently evaluated the merits of its decision to purchase Securities
pursuant to this Agreement, such decision has been independently made by
such Investor and such Investor confirms that it has only relied on the
advice of its own business and/or legal counsel and not on the advice of any
other Investor's business and/or legal counsel in making such decision.

The Company acknowledges and agrees that no Investor makes or has made any
representations or warranties with respect to the transactions contemplated
hereby other than those specifically set forth in this Section 3.2.

                                     16

<PAGE>
<PAGE>

                                 ARTICLE IV.

                       OTHER AGREEMENTS OF THE PARTIES

         4.1.     (a)      Securities may only be disposed of in compliance
with state and federal securities laws. In connection with any transfer of
the Securities other than pursuant to an effective registration statement,
to the Company, to an Affiliate of a Investor or in connection with a pledge
as contemplated in Section 4.1(b), the Company may require the transferor
thereof to provide to the Company an opinion of counsel selected by the
transferor, the form and substance of which opinion shall be reasonably
satisfactory to the Company, to the effect that such transfer does not
require registration of such transferred Securities under the Securities
Act.

                  (b)      Certificates evidencing the Securities will
contain the following legend, so long as is required by this Section 4.1(b)
or Section 4.1(c):

     [NEITHER THESE SECURITIES NOR THE SECURITIES ISSUABLE UPON
     CONVERSION/EXERCISE OF THESE SECURITIES HAVE BEEN REGISTERED] [THESE
     SECURITIES HAVE NOT BEEN REGISTERED] WITH THE SECURITIES AND EXCHANGE
     COMMISSION OR THE SECURITIES COMMISSION OF ANY STATE IN RELIANCE UPON
     AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS
     AMENDED (THE "SECURITIES ACT"), AND, ACCORDINGLY, MAY NOT BE OFFERED OR
     SOLD EXCEPT PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE
     SECURITIES ACT OR PURSUANT TO AN AVAILABLE EXEMPTION FROM, OR IN A
     TRANSACTION NOT SUBJECT TO, THE REGISTRATION REQUIREMENTS OF THE
     SECURITIES ACT AND IN ACCORDANCE WITH APPLICABLE STATE SECURITIES LAWS
     AS EVIDENCED BY A LEGAL OPINION OF COUNSEL TO THE TRANSFEROR TO SUCH
     EFFECT, THE SUBSTANCE OF WHICH SHALL BE REASONABLY ACCEPTABLE TO THE
     COMPANY. [THESE SECURITIES AND THE SECURITIES ISSUABLE UPON
     CONVERSION/EXERCISE OF THESE SECURITIES] [THESE SECURITIES] MAY BE
     PLEDGED IN A MANNER CONSISTENT WITH THE SECURITIES ACT IN CONNECTION
     WITH A BONA FIDE MARGIN ACCOUNT SECURED BY SUCH SECURITIES.

                  The Company acknowledges and agrees that a Investor may
from time to time pledge, and/or grant a security interest in some or all of
the Securities pursuant to a bona fide margin agreement in connection with a
bona fide margin account in accordance with the Securities Act and, if
required under the terms of such agreement or account, such Investor may
transfer pledged or secured Securities to the pledgees or secured parties.
Such a pledge or transfer would not be subject to approval or consent of the
Company and no legal opinion of legal counsel to the pledgee, secured party
or pledgor shall be required in connection with the pledge, but such legal
opinion may be required in connection with a subsequent transfer following
default by the Investor transferee of the pledge. No notice shall be
required of such pledge. At the appropriate Investor's expense, the Company
will execute and deliver such reasonable documentation as a pledgee or
secured party of Securities may reasonably request in connection with a
pledge or transfer of the Securities including the preparation and filing of
any required prospectus supplement under Rule 424(b)(3) under the Securities
Act or other


                                     17

<PAGE>
<PAGE>

applicable provision of the Securities Act to appropriately amend the list
of Selling Stockholders thereunder.

                  (c)      Certificates evidencing Underlying Shares shall
not contain any legend (including the legend set forth in Section 4.1(b)):
(i) following a sale of such Securities under a registration statement
(including the Registration Statement), or (ii) following any sale of such
Securities pursuant to Rule 144, or (iii) while such Securities are eligible
for sale under Rule 144(k), or (iv) if such legend is not required under
applicable requirements of the Securities Act (including judicial
interpretations and pronouncements issued by the Staff of the Commission).
Company may not make any notation on its records or give instructions to any
transfer agent of the Company that enlarge the restrictions on transfer set
forth in this Section.

         4.2.     Furnishing of Information. As long as any Investor owns
                  -------------------------
the Securities issued or issuable to it, the Company covenants to timely
file (or obtain extensions in respect thereof and file within the applicable
grace period) all reports required to be filed by the Company after the date
hereof pursuant to the Exchange Act. Upon the request of any such Person,
the Company shall deliver to such Person a written certification of a duly
authorized officer as to whether it has complied with the preceding
sentence. As long as any Investor owns Securities, if the Company is not
required to file reports pursuant to such laws, it will prepare and furnish
to the Investors and make publicly available in accordance with Rule 144(c)
such information as is required for the Investors to sell the Underlying
Shares under Rule 144. The Company further covenants that it will take such
further action as any holder of Securities may reasonably request, all to
the extent required from time to time to enable such Person to sell such
Underlying Shares without registration under the Securities Act within the
limitation of the exemptions provided by Rule 144.

         4.3.     Acknowledgment of Dilution. The Company acknowledges
                  --------------------------
that the issuance of the Securities (including the Underlying Shares) will
result in dilution of the outstanding shares of Common Stock, which dilution
may be substantial. The Company further acknowledges that its obligations
under the Transaction Documents, including without limitation its obligation
to issue the Securities (including the Underlying Shares) pursuant to the
Transaction Documents, are unconditional and absolute and not subject to any
right of set off, counterclaim, delay or reduction, regardless of the effect
of any such dilution or any claim that the Company may have against any
Investor.

         4.4.     Integration. The Company shall not, and shall use its best
                  -----------
efforts to ensure that no Affiliate of the Company shall, sell, offer for
sale or solicit offers to buy or otherwise negotiate in respect of any
security (as defined in Section 2 of the Securities Act) that would be
integrated with the offer or sale of the Securities in a manner that would
require the registration under the Securities Act of the sale of the
Securities to the Investors, or that would be integrated with the offer or
sale of the Securities for purposes of the rules and regulations of any
Trading Market.

         4.5.     Listing of Common Stock. From the date hereof through
                  -----------------------
the Effectiveness Period (as such term is defined in the Registration Rights
Agreement) the Company agrees, (i) if the Company applies to have the Common
Stock traded on any Trading Market other than the Trading Market which the
Common Stock is currently listed for trading, it will include in such
application the Underlying Shares, and will take such other action as is
necessary or desirable to


                                     18

<PAGE>
<PAGE>

cause such securities to be listed on such other Trading Market as promptly
as possible and (ii) it will take all action reasonably necessary to
continue the listing and trading of its Common Stock on a Trading Market and
will comply in all material respects with the Company's reporting, filing
and other obligations under the bylaws or rules of the Trading Market.

         4.6.     Reservation of Shares. The Company shall maintain a reserve
                  ---------------------
from its duly authorized shares of Common Stock to comply with its conversion
obligations under the Debentures and its exercise obligations under the
Warrants. If on any date the Company would be, if notice of exercise or
conversion were to be delivered on such date, precluded from issuing the
number of Underlying Shares, as the case may be, issuable upon conversion in
full of the Debentures or exercise in full under the Warrants due to the
unavailability of a sufficient number of authorized but unissued or reserved
shares of Common Stock, then the Board of Directors of the Company shall
promptly prepare and mail to the shareholders of the Company proxy materials
or other applicable materials requesting authorization to amend the
Company's articles of incorporation or other organizational document to
increase the number of shares of Common Stock which the Company is
authorized to issue so as to provide enough shares for issuance of the
Underlying Shares. In connection therewith, the Board of Directors shall (a)
adopt proper resolutions authorizing such increase, (b) recommend to and
otherwise use its best efforts to promptly and duly obtain shareholder
approval to carry out such resolutions (and hold a special meeting of the
shareholders as soon as practicable, but in any event not later than the
60th day after delivery of the proxy or other applicable materials relating
to such meeting) and (c) within five Business Days of obtaining such
shareholder authorization, file an appropriate amendment to the Company's
articles of incorporation or other organizational document to evidence such
increase.

         4.7.     Conversion and Exercise Procedures. The form of Exercise
                  ----------------------------------
Notice included in the Warrants and the form of Conversion Notice included
in the Debentures set forth the totality of the procedures required by the
Investors in order to exercise the Warrants and convert the Debentures. No
additional legal opinion or other information or instructions shall be
necessary to enable the Investors to exercise Warrants or convert Debentures.
The Company shall honor exercises of the Warrants and conversions of the
Debentures and shall deliver Underlying Shares in accordance with the terms,
conditions and time periods set forth in the Transaction Documents.

         4.8.     Subsequent Registrations; Subsequent Placements.
                  -----------------------------------------------

                  (a)      From the Closing Date through and including the
Effective Date, the Company will not file a registration statement (other
than on a Form S-8 and pursuant to the Registration Rights Agreement) with
the Commission with respect to any securities of the Company.

                  (b)      Prior to the first year anniversary of the
Closing Date, in the event the Company, directly or indirectly, determines
to offer, sell, grant any option to purchase, or otherwise dispose of (or
announces any offer, sale, grant or any option to purchase or otherwise
dispose of any of Common Stock or Common Stock Equivalents or any of its
Subsidiaries' equity or Common Stock Equivalents, including without
limitation, pursuant to a private placement, an equity line of credit or a
shelf registration statement in accordance with Rule 415


                                     19

<PAGE>
<PAGE>

under the Securities Act, (such offer, sale, grant, disposition or
announcement being referred to as "SUBSEQUENT PLACEMENT"), the Company shall
deliver to each Investor a written notice (the "SUBSEQUENT PLACEMENT
NOTICE") of its intention to effect such Subsequent Placement, which
specifies in reasonable detail all of the material terms of such Subsequent
Placement, the amount of proceeds intended to be raised thereunder, the
names of the investors (including the investment manager of such investors,
if any) and the investment bankers with whom such Subsequent Placement is
proposed to be effected, and attached to which shall be a term sheet or
similar document. The Investor shall have until 6:30 p.m. (New York City
time) on the fifth Trading Day after their respective receipt of the
Subsequent Placement Notice to notify Company of its intention to
participate, subject to completion of mutually acceptable documentation, in
such financing on the same terms as set forth in the Subsequent Placement
Notice. The Company shall not be required to permit a Investor to
participate in a Subsequent Placement hereunder in an amount (whether in
terms of a purchase price or shares of Common Stock) in excess of the
greater of: (i) its pro rata portion (calculated by reference to its
Investor Percentage) of 25% of the aggregate amount of such Subsequent
Placement and (ii) its pro rata portion (calculated by reference to its
Investor Percentage) of that proportion of the Subsequent Financing equal to
the outstanding principal balance of the Debentures held by such Investor
divided by the aggregate dollar amount of the Subsequent Placement.

                  (c)      The period set forth in the first sentence of
Section 4.8(b) shall be extended for the number of Trading Days during such
period in which (i) trading in the Common Stock is suspended by any Trading
Market or the Commission, or (ii) following the Effective Date, the
Registration Statement is not effective or the prospectus included in the
Registration Statement may not be used by the Investors for the resale of
the Underlying Shares.

                  (d)      The Company's obligations under Section 4.8(b)
shall not apply to any grant or issuance by the Company of any of the
following: (i) the issuance of securities upon the exercise or conversion of
any Common Stock Equivalents issued by the Company prior to the date of this
Agreement (but will apply to any amendments, modifications and reissuances
thereof), and (ii) the grant of options or warrants, or the issuance of
additional securities, under any duly authorized company stock option,
restricted stock plan or stock purchase plan in existence on the Closing
Date, (iii) the issuance of Common Stock in payment of interest on the
Debentures, or (iv) the issuance of Common Stock Equivalents pursuant to a
Strategic Transaction.

         4.9.     Securities Laws Disclosure; Publicity. By 8:30 a.m.
                  -------------------------------------
(New York City time) on the day this Agreement is executed and on the
Closing Date, the Company shall issue a press release reasonably acceptable
to the Investors disclosing the transactions contemplated hereby on the date
of this Agreement and file a Current Report on Form 8-K disclosing the
material terms of the transactions contemplated hereby. The Company will
file an additional Current Report on Form 8-K on the Closing Date to
disclose the Closing. In addition, the Company will make such other filings
and notices in the manner and time required by the Commission and the
Trading Market on which the Common Stock is listed. Notwithstanding the
foregoing, the Company shall not publicly disclose the name of any Investor,
or include the name of any Investor in any filing with the Commission (other
than the Registration Statement and any exhibits to filings made in respect
of this transaction in accordance with periodic filing requirements under
the Exchange Act) or any regulatory agency or Trading Market, without the
prior written consent of


                                     20

<PAGE>
<PAGE>

such Investor, except to the extent such disclosure is required by law or
Trading Market regulations, in which case the Company shall provide the
Investors with prior notice of such disclosure.

         4.10.    Limitation on Issuance of Future Priced Securities.
                  --------------------------------------------------
Following the Closing and for so long as Debentures remain outstanding, the
Company shall not issue or agree to issue any "Future Priced Securities" as
such term is described by NASD IM-4350-1.

         4.11.    Indemnification of Investors. In addition to the indemnity
                  ----------------------------
provided in the Registration Rights Agreement, the Company will indemnify
and hold the Investors and their directors, officers, shareholders,
partners, employees and agents (each, a "INVESTOR PARTY") harmless from any
and all losses, liabilities, obligations, claims, contingencies, damages,
costs and expenses, including all judgments, amounts paid in settlements,
court costs and reasonable attorneys' fees and costs of investigation
(collectively, "LOSSES") that any such Investor Party may suffer or incur as
a result of or relating to any misrepresentation, breach or inaccuracy of
any representation, warranty, covenant or agreement made by the Company in
any Transaction Document. In addition to the indemnity contained herein, the
Company will reimburse each Investor Party for its reasonable legal and
other expenses (including the cost of any investigation, preparation and
travel in connection therewith) incurred in connection therewith, as such
expenses are incurred.

         4.12.    Non-Public Information. The Company covenants and agrees
                  ----------------------
that neither it nor any other Person acting on its behalf will provide any
Investor or its agents or counsel with any information that the Company
believes constitutes material non-public information. The Company
understands and confirms that each Investor shall be relying on the
foregoing representations in effecting transactions in securities of the
Company.

         4.13.    Certain Trading Restrictions. Each Investor agrees that
                  ----------------------------
neither it nor its Affiliates will enter into or maintain a net short
position with respect to the Common Stock. Accordingly, each Investor agrees
that neither it nor its Affiliates will enter into or maintain any short
sale of the Common Stock at a time when there is no equivalent offsetting
long position in the Common Stock held by such Investor. For purposes of
determining whether there is an equivalent offsetting long position in the
Common Stock held by such Investor, the Underlying Shares issuable upon
exercise of the Warrants and conversion of the Debentures (including any
shares issuable on account of interest thereunder) held by such Investor
(without regard to any exercise or conversion caps contained therein, and
whether or not any exercise or conversion notice shall have been tendered by
such Investor) shall be deemed held long by such Investor for purposes of
this Section.

         4.14.    Existence; Conduct of Business. The Company will, and will
                  ------------------------------
cause each of the Subsidiaries to, do or cause to be done all things
necessary to preserve, renew and keep in full force and effect its legal
existence and the rights, licenses, permits, privileges and franchises
material to the conduct of its business, provided that the foregoing shall
                                         --------
not prohibit any merger, consolidation, liquidation or dissolution permitted
under Section 5.4 or any sale, lease, transfer or other disposition
permitted by Section 5.2.

                                     21

<PAGE>
<PAGE>

         4.15.    Maintenance of Cash and Cash Equivalents. While any
                  ----------------------------------------
Debentures are outstanding, the Company will, at all times, maintain
unrestricted cash and Cash Equivalents, together with availability under the
Company's revolving line of credit, in an aggregate amount not less than
$500,000, free and clear of all Liens (other than any right of offset of the
Company's bank lenders). In the event that such unrestricted cash and Cash
Equivalents maintained by the Company hereunder shall at the end of any
fiscal quarter (as reflected in Company's Quarterly Report on Form 10-Q
under the Exchange Act for such fiscal quarter be in an aggregate amount
less than such amount, the Company shall deliver to each Investor at the
Company's expense, a letter of credit (in form and substance acceptable to
such Investor) and issued by a bank acceptable to such Investor in a face
amount equal to the sum of 100% of the then outstanding principal amount of
such Investor's Debenture plus interest payable thereon until the maturity
date thereof. Such letters of credit shall provide, among other things, that
the beneficiary thereof shall have the right to draw thereunder upon
presentation of a draft together with a certificate signed by such Investor
referring to this Agreement and the Debentures held by such Investor and
certifying that an Event of Default has occurred and is continuing under the
Transaction Documents.

         4.16.    Use of Proceeds. Except as set forth in Section 4.16 of
                  ---------------
the Disclosure Schedule, the Company shall use the net proceeds from the
sale of the Securities hereunder for working capital purposes and not for
the satisfaction of any portion of the Company's debt (other than payment of
the Company's existing line of credit and trade payables and accrued
expenses in the ordinary course of the Company's business and prior
practices), to redeem any Common Stock or Common Stock Equivalents or to
settle any outstanding Action; provided, however, that the Company shall be
entitled to use up to $1,000,000 of such net proceeds in connection with the
resolution of matters described in Section 4.16 of the Disclosure Schedule.

                                 ARTICLE V.

                             NEGATIVE COVENANTS

                  The Company covenants and agrees that from and after the
Closing Date and so long as there remains any outstanding principal
amount under the Debentures, the Company shall not, and shall not permit its
Subsidiaries to:

         5.1.     Dispositions of Assets or Subsidiaries. Sell, convey,
                  --------------------------------------
assign, lease, abandon or otherwise transfer or dispose of, voluntarily or
involuntarily, any material properties or assets, tangible or intangible
(including any spin-offs of any divisions, lines of business or subsidiaries
and also including sale, assignment, discount or other disposition of
accounts, contract rights, chattel paper, equipment or general intangibles
with or without recourse or of capital stock, shares of beneficial interest,
partnership interests or limited liability Company interests of a Subsidiary
of the Company), except:

                  (a)      transactions involving the sale of inventory or
upgrade or exchange of machinery, in either case, in the ordinary course of
business and for usual and ordinary prices;

                  (b)      any sale, transfer or lease of assets by any
wholly-owned Subsidiary to the Company or another Subsidiary;

                                     22

<PAGE>
<PAGE>

                  (c)      any sale, transfer or lease of assets in the
ordinary course of business which are replaced by substitute assets acquired
or leased; or

                  (d)      any sale, transfer or lease of assets, other than
those specifically excepted pursuant to clauses (i) through (iii) above, the
fair market value of which does not exceed $5,000,000 in the aggregate
during the term of this Agreement.

         5.2.     Dividends and other Payments. Declare or distribute any
                  ----------------------------
dividends or any other payments or distributions of cash or other property
to its shareholders or officers or directors (other than payable solely in
Common Stock or in compliance with existing Company stock incentive plans
and salaries in the ordinary course of business) with respect to its capital
stock.

         5.3.     Restricted Payments. Declare or make, or agree to pay for
                  -------------------
or make, directly or indirectly, any Restricted Payment, provided that (a) the
                                                         --------
Company may declare and pay, and agree to pay, dividends with respect to its
Equity Interests payable solely Common Stock, (b) any wholly-owned
Subsidiary of the Company may declare and pay dividends with respect to its
Equity Interests to the Company or any other wholly-owned Subsidiary of the
Company, (c) provided that no default under the Transaction Documents which
             --------
may (with notice or lapse of time or both) become an Event of Default shall
have occurred and shall be continuing, the Company or any Subsidiary may
make payments of Indebtedness and (d) the Company may pay bonuses to its
officers, directors and employees, (e) the Company may pay director's fees
to its directors, (f) the Company may pay fees to its directors for bona
fide consulting services, and (g) the Company may make certain payments with
respect to the matters set forth in Section 5.3 of the Disclosure Schedule.

                                 ARTICLE VI.

                            CONDITIONS PRECEDENT

         6.1.     Conditions Precedent to the Obligations of the Investors
                  --------------------------------------------------------
to Purchase Securities. The obligation of each Investor to acquire
----------------------
Securities is subject to the satisfaction or waiver by such Investor of each
of the following conditions:

                  (a)      Representations and Warranties. The representations
                           ------------------------------
and warranties of the Company contained herein shall be true and correct in
all material respects as of the date when made and as of the Closing as
though made on and as of such date;

                  (b)      Performance. The Company shall have performed,
                           -----------
satisfied and complied in all material respects with all covenants,
agreements and conditions required by the Transaction Documents to be
performed, satisfied or complied with by it at or prior to the Closing;

                  (c)      No Injunction. No statute, rule, regulation,
                           -------------
executive order, decree, ruling or injunction shall have been enacted,
entered, promulgated or endorsed by any court or governmental authority of
competent jurisdiction that prohibits the consummation of any of the
transactions contemplated by the Transaction Documents;

                  (d)      Adverse Changes. Since the date of execution of
                           ---------------
this Agreement, no event or series of events shall have occurred that
reasonably would be expected to have or result in a


                                     23

<PAGE>
<PAGE>

(i) an adverse effect on the legality, validity or enforceability of any
Transaction Document, or (ii) a material and adverse effect on the results
of operations, assets, business or condition (financial or otherwise) of the
Company and the Subsidiaries, taken as a whole;

                  (e)      No Suspensions of Trading in Common Stock; Listing.
                           --------------------------------------------------
Trading in the Common Stock shall not have been suspended by the Commission
or any Trading Market (except for any suspensions of trading of not more
than one Trading Day solely to permit dissemination of material information
regarding the Company) at any time since the date of execution of this
Agreement, and the Common Stock shall have been at all times since such date
listed for trading on a Trading Market;

                  (f)      Nasdaq Listing. The Nasdaq Stock Market shall have
                           --------------
waived application of the 15 day prior notice contained in NASD Marketplace
Rule 4310(17)(D) or such timeframe shall have expired without objection;

                  (g)      Unqualified Opinion. The Company shall have
                           -------------------
received an unqualified opinion from Pricewaterhouse Coopers LLP on the
Company's financial statements as of September 30, 2003 and the year then
ended which does not contain any going concern qualifications;

                  (h)      Revolving Credit Facility. The Company's Credit
                           -------------------------
Agreement, dated as of May 11, 2001, by and among the Company, Zoltek
Corporation, Cape Composites, Inc., Engineering Technology Corporation,
Zoltek Properties, Inc. and Southwest Bank of St. Louis (the "BANK"), as
amended by that certain First Amendment to Credit Agreement dated as of
February 13, 2003 (the "CREDIT FACILITY"), shall have been extended through
the Company's fiscal year ended September 30, 2004, to permit the Company to
draw an amount no less than the maximum amount currently available under the
Credit Facility;

                  (i)      Payments. The Company shall have settled
                           --------
intercompany accounts receivable due Zoltek Rt. from Zoltek Corporation, as
contemplated by Section 3.1(r) of the Disclosure Schedules;

                  (j)      Bank Consent. The Company shall have received the
                           ------------
consent of the Bank with respect to the transactions contemplated by the
Transaction Documents as well as an estoppel certificate indicating the
absence of any event of default or any default which could with or without
the passage of time result in an event of default under the Credit Facility;

                  (k)      10-K Filing. The Company shall have filed its
                           -----------
Annual Report on Form 10-K for the annual period ended September 30, 2003
with the Commission;

                  (l)      Company Deliverables. The Investors shall have
                           --------------------
received the Company Deliverables; and

                  (m)      Timing. The conditions to closing set forth herein
                           ------
(other than Section 6.1(m)) shall have occurred no later than January 31, 2004.

                                     24

<PAGE>
<PAGE>

         6.2.     Conditions Precedent to the Obligations of the Company to sell
                  --------------------------------------------------------------
Securities. The obligation of the Company to sell Securities is subject to
----------
the satisfaction or waiver by the Company hereunder of each of the following
conditions:

                  (a)      Representations and Warranties. The representations
                           ------------------------------
and warranties of each Investor contained herein shall be true and correct
in all material respects as of the date when made and as of the Closing Date
as though made on and as of such date;

                  (b)      Performance. Each Investor shall have performed,
                           -----------
satisfied and complied in all material respects with all covenants,
agreements and conditions required by the Transaction Documents to be
performed, satisfied or complied with by such Investor at or prior to the
Closing;

                  (c)      No Injunction. No statute, rule, regulation,
                           -------------
executive order, decree, ruling or injunction shall have been enacted,
entered, promulgated or endorsed by any court or governmental authority of
competent jurisdiction that prohibits the consummation of any of the
transactions contemplated by the Transaction Documents;

                  (d)      Nasdaq Listing. The Nasdaq Stock Market shall
                           --------------
have waived application of the 15 day prior notice contained in NASD
Marketplace Rule 4310(17)(D) or such timeframe shall have expired without
objection; and

                  (e)      Bank Consent. The Company shall have received
                           ------------
the consent of the Bank with respect to the transactions contemplated by the
Transaction Documents as well as an estoppel certificate indicating the
absence of any event of default or any default which could with or without
the passage of time result in an event of default under the Credit Facility;
and

                  (f)      Timing. The conditions to closing set forth
                           ------
herein (other than Section 6.2(f)) shall have occurred no later than
January 31, 2004.

                                ARTICLE VII.

                                MISCELLANEOUS

         7.1.     Fees and Expenses. The Company shall be responsible for
                  -----------------
the reasonable legal fees and expenses of each Investor in the event that
the Company requests any waiver or amendment of the provisions of any
Transaction Document following the Closing. Except as specified in the
immediately preceding sentence, and except that Company shall reimburse the
initial Investor for its legal fees and expenses incurred in connection with
its entering into the Transaction Documents in an aggregate amount not to
exceed $35,000, each party shall pay the fees and expenses of its advisers,
counsel, accountants and other experts, if any, and all other expenses
incurred by such party incident to the negotiation, preparation, execution,
delivery and performance of the Transaction Documents. The Company shall pay
all stamp and other taxes and duties levied in connection with the sale of
the Securities.

         7.2.     Entire Agreement. The Transaction Documents, together with
                  ----------------
the Exhibits and Schedules thereto, contain the entire understanding of the
parties with respect to the subject matter hereof and supersede all prior
agreements and understandings, oral or written, with


                                     25

<PAGE>
<PAGE>

respect to such matters, which the parties acknowledge have been merged into
such documents, exhibits and schedules. At or after the Closing, and without
further consideration, each party will execute and deliver to the other
party hereto such further documents as may be reasonably requested in order
to give practical effect to the intention of the parties under the
Transaction Documents.

         7.3.     Notices. All notices or other communications or deliveries
                  -------
required or permitted to be provided hereunder shall be in writing and shall
be deemed given and effective on the earliest of (a) the date of
transmission, if such notice or communication is delivered via facsimile at
the facsimile number specified in this Section prior to 6:30 p.m. (New York
City time) on a Trading Day, (b) the next Trading Day after the date of
transmission, if such notice or communication is delivered via facsimile at
the facsimile number specified in this Section on a day that is not a
Trading Day or later than 6:30 p.m. (New York City time) on any Trading Day,
(c) the Trading Day following the date of mailing, if sent by U.S.
nationally recognized overnight courier service, or (d) upon actual receipt
by the party to whom such notice is required to be given. The address for
such notices and communications shall be as follows:

                  If to the Company:   Zoltek Companies, Inc.
                                       3101 McKelvey Rd.
                                       St. Louis, Missouri 63044
                                       Facsimile No.: (314) 291-9082
                                       Attention: Chief Financial Officer

                  With a copy to:      Thompson Coburn LLP
                                       One U.S. Bank Plaza
                                       St. Louis, Missouri 63101
                                       Facsimile No.: (314) 552-7000
                                       Attention: Thomas A. Litz, Esq.

                  If to any Investor:  To the address set forth under
                                       such Investor's name on the
                                       signature pages attached hereto.

or such other address as may be designated in writing hereafter, in the same
manner, by such Person.

         7.4.     Amendments; Waivers. No provision of this Agreement may be
                  -------------------
waived or amended except in a written instrument signed, in the case of an
amendment, by the Company and the Investor or Investors holding no less than
66 2/3% of the outstanding principal amount of Debentures or, in the case of a
waiver, by the party against whom enforcement of any such waiver is sought.
No waiver of any default with respect to any provision, condition or
requirement of this Agreement shall be deemed to be a continuing waiver in
the future or a waiver of any subsequent default or a waiver of any other
provision, condition or requirement hereof, nor shall any delay or omission
of either party to exercise any right hereunder in any manner impair the
exercise of any such right.

         7.5.     Construction. The headings herein are for convenience only,
                  ------------
do not constitute a part of this Agreement and shall not be deemed to limit or
affect any of the provisions hereof.


                                     26

<PAGE>
<PAGE>

The language used in this Agreement will be deemed to be the language chosen
by the parties to express their mutual intent, and no rules of strict
construction will be applied against any party. This Agreement shall be
construed as if drafted jointly by the parties, and no presumption or burden
of proof shall arise favoring or disfavoring any party by virtue of the
authorship of any provisions of this Agreement or any of the Transaction
Documents.

         7.6.     Successors and Assigns. This Agreement shall be binding
                  ----------------------
upon and inure to the benefit of the parties and their successors and
permitted assigns. The Company may not assign this Agreement or any rights
or obligations hereunder without the prior written consent of the Investors.
Any Investor may assign its rights under this Agreement to any Person to
whom such Investor assigns or transfers any Securities.

         7.7.     No Third-Party Beneficiaries. This Agreement is intended for
                  ----------------------------
the benefit of the parties hereto and their respective successors and permitted
assigns and is not for the benefit of, nor may any provision hereof be
enforced by, any other Person, except that each Related Person is an
intended third party beneficiary of Section 4.11 and may enforce the
provisions of such Section directly against the Company.

         7.8.     Governing Law. All questions concerning the construction,
                  -------------
validity, enforcement and interpretation of this Agreement shall be governed
by and construed and enforced in accordance with the internal laws of the
State of New York, without regard to the principles of conflicts of law
thereof. Each party agrees that all Proceedings concerning the
interpretations, enforcement and defense of the transactions contemplated by
this Agreement and any other Transaction Documents (whether brought against
a party hereto or its respective Affiliates, employees or agents) shall be
commenced exclusively in the state and federal courts sitting in the City of
New York, Borough of Manhattan (the "NEW YORK COURTS"). Each party hereto
hereby irrevocably submits to the exclusive jurisdiction of the New York
Courts for the adjudication of any dispute hereunder or in connection
herewith or with any transaction contemplated hereby or discussed herein
(including with respect to the enforcement of the any of the Transaction
Documents), and hereby irrevocably waives, and agrees not to assert in any
Proceeding, any claim that it is not personally subject to the jurisdiction
of any such New York Court, or that such Proceeding has been commenced in an
improper or inconvenient forum. Each party hereto hereby irrevocably waives
personal service of process and consents to process being served in any such
Proceeding by mailing a copy thereof via registered or certified mail or
overnight delivery (with evidence of delivery) to such party at the address
in effect for notices to it under this Agreement and agrees that such
service shall constitute good and sufficient service of process and notice
thereof. Nothing contained herein shall be deemed to limit in any way any
right to serve process in any manner permitted by law. Each party hereto
hereby irrevocably waives, to the fullest extent permitted by applicable
law, any and all right to trial by jury in any legal proceeding arising out
of or relating to this Agreement or the transactions contemplated hereby. If
either party shall commence a Proceeding to enforce any provisions of a
Transaction Document, then the prevailing party in such Proceeding shall be
reimbursed by the other party for its attorney's fees and other costs and
expenses incurred with the investigation, preparation and prosecution of
such Proceeding.

         7.9.     Survival. The representations, warranties, agreements and
                  --------
covenants contained herein shall survive the Closing and the delivery,
exercise and conversion of the Securities.

                                     27

<PAGE>
<PAGE>

         7.10.    Execution. This Agreement may be executed in two or more
                  ---------
counterparts, all of which when taken together shall be considered one and
the same agreement and shall become effective when counterparts have been
signed by each party and delivered to the other party, it being understood
that both parties need not sign the same counterpart. In the event that any
signature is delivered by facsimile transmission, such signature shall
create a valid and binding obligation of the party executing (or on whose
behalf such signature is executed) the same with the same force and effect
as if such facsimile signature page were an original thereof.

         7.11.    Severability. If any provision of this Agreement is held
                  ------------
to be invalid or unenforceable in any respect, the validity and
enforceability of the remaining terms and provisions of this Agreement shall
not in any way be affected or impaired thereby and the parties will attempt
to agree upon a valid and enforceable provision that is a reasonable
substitute therefor, and upon so agreeing, shall incorporate such substitute
provision in this Agreement.

         7.12.    Rescission and Withdrawal Right. Notwithstanding anything
                  -------------------------------
to the contrary contained in (and without limiting any similar provisions
of) the Transaction Documents, whenever any Investor exercises a right,
election, demand or option under a Transaction Document and the Company does
not timely perform its related obligations within the periods therein
provided, then such Investor may rescind or withdraw, in its sole discretion
from time to time upon written notice to the Company, any relevant notice,
demand or election in whole or in part without prejudice to its future
actions and rights.

         7.13.    Replacement of Securities. If any certificate or instrument
                  -------------------------
evidencing any Securities is mutilated, lost, stolen or destroyed, the
Company shall issue or cause to be issued in exchange and substitution for
and upon cancellation thereof, or in lieu of and substitution therefor, a
new certificate or instrument, but only upon receipt of evidence reasonably
satisfactory to the Company of such loss, theft or destruction and customary
and reasonable indemnity, if requested. The applicants for a new certificate
or instrument under such circumstances shall also pay any reasonable
third-party costs associated with the issuance of such replacement
Securities.

         7.14.    Remedies. In addition to being entitled to exercise all rights
                  --------
provided herein or granted by law, including recovery of damages, each of
the Investors and the Company will be entitled to specific performance under
the Transaction Documents. The parties agree that monetary damages may not
be adequate compensation for any loss incurred by reason of any breach of
obligations described in the foregoing sentence and hereby agrees to waive
in any action for specific performance of any such obligation the defense
that a remedy at law would be adequate.

         7.15.    Payment Set Aside. To the extent that the Company makes a
                  -----------------
payment or payments to any Investor pursuant to any Transaction Document or
a Investor enforces or exercises its rights thereunder, and such payment or
payments or the proceeds of such enforcement or exercise or any part thereof
are subsequently invalidated, declared to be fraudulent or preferential, set
aside, recovered from, disgorged by or are required to be refunded, repaid
or otherwise restored to the Company, a trustee, receiver or any other
person under any law (including, without limitation, any bankruptcy law,
state or federal law, common law or equitable cause of action), then to the
extent of any such restoration the obligation or part thereof


                                     28

<PAGE>
<PAGE>

originally intended to be satisfied shall be revived and continued in full
force and effect as if such payment had not been made or such enforcement or
setoff had not occurred.

         7.16.    Independent Nature of Investors. The obligations of each
                  -------------------------------
Investor under any Transaction Document are several and not joint with the
obligations of any other Investor, and no Investor shall be responsible in
any way for the performance of the obligations of any other Investor under
any Transaction Document. The decision of each Investor to purchase
Securities pursuant to this Agreement has been made by such Investor and
each Investor confirms that it has only relied on the advice of its own
business and/or legal counsel and not on the advice of any other Investor's
business and/or legal counsel. Nothing contained herein, or in any
Transaction Document, and no action taken by any Investor pursuant hereto or
thereto, shall be deemed to constitute the Investors as a partnership, an
association, a joint venture or any other kind of entity, or create a
presumption that the Investors are in any way acting in concert or as a
group with respect to such obligations or the transactions contemplated by
the Transaction Documents. Each Investor shall be entitled to independently
protect and enforce its rights, including without limitation the rights
arising out of this Agreement or out of the other Transaction Documents, and
it shall not be necessary for any other Investor to be joined as an
additional party in any proceeding for such purpose.

         7.17.    Limitation of Liability. Notwithstanding anything herein to
                  -----------------------
the contrary, the Company acknowledges and agrees that the liability of any
Investor arising directly or indirectly, under any Transaction Document, of
any and every nature whatsoever, shall be satisfied solely out of the assets
of such Investor, and that no trustee, officer, other investment vehicle
affiliated with such Investor or any investor, shareholder or holder of
shares of beneficial interest of such a Investor shall be personally liable
for any liabilities of such Investor.

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                           SIGNATURE PAGES FOLLOW]


                                     29

<PAGE>
<PAGE>

                  IN WITNESS WHEREOF, the parties hereto have caused this
Securities Purchase Agreement to be duly executed by their respective
authorized signatories as of the date first indicated above.

                              ZOLTEK COMPANIES, INC.

                              By: /s/ Zsolt Rumy
                                  --------------------------------------------
                                  Name: Zsolt Rumy
                                  Title: Chief Executive Officer and President

                 [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK
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                                     30