1 Exhibit 1.1 2,500,000 SHARES* CALYPTE BIOMEDICAL CORPORATION COMMON STOCK FORM UNDERWRITING AGREEMENT June ___, 1996 Pacific Growth Equities, Inc. 353 Sacramento Street, 16th Floor San Francisco, California 94111 As Representative of the several Underwriters Ladies and Gentlemen: 1. INTRODUCTORY. Calypte Biomedical Corporation, a Delaware corporation (the "Company"), proposes to issue and sell to the several underwriters identified on Exhibit A hereto (the "Underwriters") for whom you are acting as Representative an aggregate of 2,500,000 shares (the "Firm Common Shares") of the Company's authorized but unissued Common Stock ("Common Stock"). In addition, the Company proposes to grant to the Underwriters an option to purchase up to 375,000 additional shares of Common Stock (the "Optional Common Shares"), as provided in Section 4 hereof. The Firm Common Shares and, to the extent such option is exercised, the Optional Common Shares are hereinafter collectively referred to as the "Common Shares." You have advised the Company that the Underwriters propose to make a public offering of the Common Shares on the effective date of the registration statement hereinafter referred to, or as soon thereafter as in your judgment is advisable. The Company hereby confirms its agreement with respect to the purchase of the Common Shares by the Underwriters as follows: 2. REPRESENTATIONS AND WARRANTIES OF THE COMPANY. The Company represents and warrants to you that: (a) The Company has prepared a registration statement on Form S-1 (File No. __________) with respect to the Common Shares in conformity with the requirements of the Securities Act of 1933, as amended (the "Act"), and the rules and regulations (the "Rules - -------- *Plus an option to purchase up to 375,000 additional shares of Common Stock to cover overallotments, if any. 1. 2 and Regulations") of the Securities and Exchange Commission (the "Commission") thereunder, and has filed such registration statement with the Commission. The Company has prepared and has filed or proposes to file prior to the effective date of such registration statement an amendment or amendments thereto, which have been or will be similarly prepared. The Company has delivered to you two signed copies of such registration statement and amendments, together with two copies of each exhibit filed therewith. Conformed copies of such registration statement and amendments (but without exhibits) and of the related preliminary prospectus have been delivered to you in such reasonable quantities as you have requested. The Company will next file with the Commission one of the following: (i) prior to effectiveness of such registration statement, a further amendment thereto, including the form of final prospectus, (ii) a final prospectus in accordance with Rules 430A and 424(b) of the Rules and Regulations or (iii) a term sheet (the "Term Sheet") as described in and in accordance with Rules 434 and 424(b) of the Rules and Regulations. As filed, such amendment and form of final prospectus, such final prospectus or such Term Sheet shall include all Rule 430A Information (as defined below) and, except to the extent you shall agree in writing to a modification, shall be in all substantive respects in the form furnished to you prior to the date and time that this Agreement was executed and delivered by the parties hereto, or, to the extent not completed at such date and time, shall contain only such specific additional information and other changes (beyond those contained in the latest Preliminary Prospectus) as the Company shall have previously advised you in writing would be included or made therein. The term "Registration Statement" as used in this Agreement shall mean such registration statement at the time such registration statement becomes effective and, in the event any post-effective amendment thereto becomes effective prior to the First Closing Date (as hereinafter defined), shall also mean such registration statement as so amended; provided, however, that such term shall also include all Rule 430A Information deemed to be included in such registration statement at the time such registration statement becomes effective as provided by Rule 430A of the Rules and Regulations and any registration statement filed pursuant to Rule 462(b) of the Rules and Regulations. The term "Preliminary Prospectus" shall mean each preliminary prospectus referred to in the preceding paragraph and any preliminary prospectus included in the Registration Statement at the time it becomes effective that omits Rule 430A Information. The term "Prospectus" shall mean either (i) the prospectus relating to the Common Shares in the form in which it is first filed with the Commission pursuant to Rule 424(b) of the Rules and Regulations or, (ii) if a Term Sheet is not used and no filing pursuant to Rule 424(b) of the Rules and Regulations is required, the form of final prospectus included in the Registration Statement at the time such registration statement becomes effective, or (iii) if a Term Sheet is used, the Term Sheet in the form in which it is first filed with the Commission pursuant to Rule 424(b) of the Rules and Regulations, together with the Preliminary Prospectus included in the Registration Statement at the time it becomes effective. The term "Rule 430A Information" means information with respect to the Common Shares and the offering thereof permitted to be omitted from the Registration Statement when it becomes effective pursuant to Rule 430A of the Rules and Regulations. (b) The Commission has not issued any order preventing or suspending the use of any Preliminary Prospectus, and each Preliminary Prospectus has conformed in all material respects 2. 3 to the requirements of the Act and the Rules and Regulations and, as of its date, has not included any untrue statement of a material fact or omitted to state a material fact necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading; and at the time the Registration Statement becomes effective, and at all times subsequent thereto up to and including each Closing Date hereinafter mentioned, the Registration Statement and the Prospectus, and any amendments or supplements thereto, will contain all material statements and information required to be included therein by the Act and the Rules and Regulations and will in all material respects conform to the requirements of the Act and the Rules and Regulations, and neither the Registration Statement nor the Prospectus, nor any amendment or supplement thereto, will include any untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein not misleading; provided, however, no representation or warranty contained in this subsection 2(b) shall be applicable to information contained in or omitted from any Preliminary Prospectus, the Registration Statement, the Prospectus or any such amendment or supplement in reliance upon and in conformity with written information furnished to the Company by or on behalf of any Underwriter directly or through you, as Representative, specifically for use in the preparation thereof. (c) The Company does not own or control, directly or indirectly, any corporation, association, partnership or entity other than Pepgen Corporation (the "Subsidiary"). The Company and the Subsidiary have been duly incorporated or otherwise formed and each is validly existing as a corporation in good standing under the laws of the jurisdiction of its formation with full power and authority (corporate and other) to own and lease its property and conduct its business as described in the Prospectus. Each of the Company and the Subsidiary: (i) is in possession of and operating in compliance with all authorizations, licenses, permits, consents, certificates and orders material to the conduct of its respective business, all of which are valid and in full force and effect; and (ii) is duly qualified to do business and in good standing as a foreign corporation in each jurisdiction in which the ownership or leasing of properties or the conduct of its business requires such qualification, except for jurisdictions in which the failure to so qualify would not have a material adverse effect upon the Company. No proceeding has been instituted in any such jurisdiction, revoking, limiting or curtailing, or seeking to revoke, limit or curtail, any such power and authority or qualification. (d) The Company has an authorized and outstanding capital stock as set forth under the heading "Capitalization" in the Prospectus; the issued and outstanding shares of Common Stock have been duly authorized and validly issued, are fully paid and nonassessable, were issued in compliance with all federal and state securities laws, were not issued in violation of or subject to any preemptive rights or other rights to subscribe for or purchase securities, and conform to the description thereof contained in the Prospectus. Except as disclosed in or contemplated by the Prospectus and the financial statements of the Company, and the related notes thereto, included in the Prospectus, the Company does not have outstanding any options to purchase, or any preemptive rights or other rights to subscribe for or to purchase, any securities or obligations convertible into, or any contracts or commitments to issue or sell, shares of its capital stock or any such options, rights, convertible securities or obligations. The description of the Company's stock option, stock bonus and other stock plans or arrangements, 3. 4 and the options or other rights granted and exercised thereunder, set forth in the Prospectus accurately and fairly presents the information required to be shown with respect to such plans, arrangements, options and rights. The Prospectus accurately describes the Company's direct and indirect beneficial ownership of the equity securities of the Subsidiary, and there are no outstanding options to purchase or other rights to subscribe for or to purchase, any securities or obligations convertible into, or any contracts or commitments to issue or sell, shares of equity securities of the Subsidiary or any such options, rights, convertible securities or obligations. (e) The Common Shares have been duly authorized and, when issued, delivered and paid for in the manner set forth in this Agreement, will be duly authorized, validly issued, fully paid and nonassessable and will conform to the description thereof contained in the Prospectus. No preemptive rights or other rights to subscribe for or purchase exist with respect to the issuance and sale of the Common Shares by the Company pursuant to this Agreement. No person has any right that has not lapsed or been waived to require the Company to register the sale of any securities owned by such person under the Act in the public offering contemplated by this Agreement. No further approval or authority of the stockholders or the Board of Directors of the Company will be required for the issuance and sale of the Common Shares as contemplated herein. (f) The Company has full legal right, power and authority to enter into this Agreement and perform the transactions contemplated hereby. This Agreement has been duly authorized, executed and delivered by the Company and constitutes a valid and binding obligation of the Company in accordance with its terms. The making and performance of this Agreement by the Company and the consummation of the transactions herein contemplated will not violate any provisions of the certificate of incorporation or bylaws, or other organizational documents, of the Company, and will not conflict with, result in the breach or violation of, or constitute, either by itself or upon notice or the passage of time or both, a default under any agreement, mortgage, deed of trust, lease, franchise, license, indenture, permit or other instrument to which the Company is a party or by which the Company or any of its properties may be bound or affected, any statute or any authorization, judgment, decree, order, rule or regulation of any court or any regulatory body, administrative agency or other governmental body applicable to the Company or any of its properties. No consent, approval, authorization or other order of any court, regulatory body, administrative agency or other governmental body is required for the execution and delivery of this Agreement or the consummation of the transactions contemplated by this Agreement, except for compliance with the Act, the Blue Sky laws applicable to the public offering of the Common Shares by the Underwriters and the clearance of such offering with the National Association of Securities Dealers, Inc. (the "NASD"). (g) KPMG Peat Marwick LLP, who have expressed their opinion as to the financial statements and schedules filed with the Commission as a part of the Registration Statement and included in the Prospectus and in the Registration Statement, are independent accountants for the Company as required by the Act and the Rules and Regulations. 4. 5 (h) The financial statements and schedules of the Company (together with the related notes thereto) included in the Registration Statement and the Prospectus present fairly the financial position of the Company as of the respective dates of such financial statements and schedules, and the results of operations and cash flows of the Company for the respective periods covered thereby. Such statements, schedules and related notes have been prepared in accordance with generally accepted accounting principles applied on a consistent basis as certified, except as otherwise disclosed therein, by the independent accountants named in subsection 2(g). No other financial statements, schedules or information are required to be included in the Registration Statement. The selected financial data set forth in the Prospectus under the captions "Capitalization" and "Selected Consolidated Financial Data" fairly present the information set forth therein on the basis stated in the Registration Statement. (i) Except as disclosed in the Prospectus, and except as to defaults that individually or in the aggregate would not be material to the Company, neither the Company nor the Subsidiary is in violation or default of any provision of its certificate of incorporation or bylaws, or other organizational documents, nor is the Company or the Subsidiary in breach of or default as to any provision of any agreement, judgment, decree, order, mortgage, deed of trust, lease, franchise, license, indenture, permit or other instrument to which the Company or the Subsidiary is a party or by which the Company or the Subsidiary or any of their respective properties are bound; and there does not exist any state of facts that constitutes an event of default on the part of the Company or the Subsidiary as defined in such documents or that, with notice or lapse of time or both, would constitute such an event of default. (j) There are no contracts or other documents required to be described in the Registration Statement or to be filed as exhibits to the Registration Statement by the Act or by the Rules and Regulations that have not been described or filed as required. The descriptions of all contracts referenced in the Prospectus are accurate and complete; all such contracts are in full force and effect on the date hereof; and neither the Company or, to the best of the Company's knowledge, any other party, is in breach of or default under any of such contracts. (k) Except as disclosed in the Prospectus, there are no legal or governmental actions, suits or proceedings pending or, to the best of the Company's knowledge, threatened to which the Company or the Subsidiary is or may be a party or of which property owned or leased by the Company or the Subsidiary is or may be the subject, or related to environmental or discrimination matters, which actions, suits or proceedings might, individually or in the aggregate, prevent or adversely affect the transactions contemplated by this Agreement, or result in a material adverse change in the condition (financial or otherwise), properties, business, results of operations or prospects of the Company. No labor disturbance by the employees of the Company or the Subsidiary exists or is imminent that might be expected to affect adversely such condition, properties, business, results of operations or prospects. Neither the Company nor the Subsidiary is a party or subject to the provisions of any material injunction, judgment, decree or order of any court, regulatory body, administrative agency or other governmental body. 5. 6 (l) The Company or the Subsidiary, as applicable, has good and marketable title to all the properties and assets reflected as owned in the Company's financial statements included in the Prospectus or the Registration Statement and all properties and assets necessary for the conduct of its business, in each case subject to no lien, mortgage, pledge, charge or encumbrance of any kind except (i) those, if any, reflected in such financial statements (or elsewhere in the Prospectus), or (ii) those that are not material in amount and do not adversely affect the use made and proposed to be made of such property by the Company or the Subsidiary. Except as disclosed in the Prospectus, the Company or the Subsidiary, as applicable, holds its leased properties under valid and binding leases, with such exceptions as are not materially significant in relation to the business of the Company. Except as disclosed in the Prospectus, the Company or the Subsidiary, as applicable, owns or leases all such properties as are necessary to its operations as now conducted or as proposed to be conducted. (m) Since the respective dates as of which information is given in the Registration Statement and Prospectus, and except as described in or specifically contemplated by the Prospectus: (i) neither the Company nor the Subsidiary has incurred any material liabilities or obligations, indirect, direct or contingent, or entered into any material verbal or written agreement or other transaction that is not in the ordinary course of business or that could result in a material reduction in the future earnings of the Company; (ii) neither the Company nor the Subsidiary has sustained any material loss or interference with its business or property from fire, flood, windstorm, accident or other calamity, whether or not covered by insurance; (iii) the Company has not paid or declared any dividends or other distributions with respect to its capital stock and neither the Company nor the Subsidiary has defaulted on the payment of principal or interest on any outstanding debt obligations; (iv) there has not been any change in the capital stock (other than upon the sale of the Common Shares hereunder and upon the exercise of options and warrants or pursuant to employee benefit plans described in the Registration Statement) or indebtedness material to the Company; and (v) there has not been any material adverse change in the condition (financial or otherwise), business, properties, results of operations or prospects of the Company or the Subsidiary. (n) Except as disclosed in or specifically contemplated by the Prospectus, the Company and the Subsidiary each has sufficient trademarks, trade names, patent rights, mask works, copyrights, licenses, approvals and governmental authorizations to conduct its respective business as described in the Prospectus; the expiration of any trademarks, trade names, patent rights, mask works, copyrights, licenses, approvals or governmental authorizations would not have a material adverse effect on the condition (financial or otherwise), business, results of operations or prospects of the Company; and the Company has no knowledge of any infringement by it or the Subsidiary of any trademark, trade name rights, patent rights, mask works, copyrights, licenses, trade secret or other similar rights of any others, and there is no claim being made against the Company or the Subsidiary regarding trademark, trade name, patent, copyright, license, trade secret or other infringement that could have a material adverse effect on the condition (financial or otherwise), business, results of operations or prospects of the Company. 6. 7 (o) Neither the Company nor the Subsidiary has been advised, and neither has any reason to believe, that the Company or the Subsidiary is not conducting its business in compliance with all applicable laws, rules and regulations of the jurisdictions in which it is conducting business and proposes to conduct business, including, without limitation, all applicable statutes or regulations relating to: the development, testing, manufacture, labelling, advertising, sale or use of diagnostic medical products; the control of exports from the United States; and local, state and federal environmental laws and regulations, except as disclosed in the Prospectus and except where failure to be so in compliance would not materially adversely affect the condition (financial or otherwise), business, results of operations or prospects of the Company. (p) The Company and the Subsidiary have filed all necessary federal, state and foreign income and franchise tax returns and has paid all taxes shown as due thereon; and the Company has no knowledge of any tax deficiency that has been or might be asserted or threatened against the Company or the Subsidiary that could materially and adversely affect the business, operations or properties of the Company. (q) Neither the Company nor the Subsidiary is or will be after completion of the offering described in the Prospectus, an "investment company" or a company "controlled" by an "investment company" within the meaning of the Investment Company Act of 1940, as amended. (r) The Company has not distributed and will not distribute prior to the later to occur of (i) competition of the distribution of the Common Shares, or (ii) the expiration of any time period within which a dealer is required under the Securities Act to deliver a Prospectus relating to the Common Shares any offering material in connection with the offering and sale of the Common Shares other than the Prospectus, the Registration Statement and the other materials permitted by the Act. (s) The Company and the Subsidiary maintain insurance of the types and in the amounts generally deemed adequate for their respective businesses, including, but not limited to, product liability insurance, insurance covering real and personal property owned or leased by the Company or the Subsidiary against theft, damage, destruction, acts of vandalism and all other risks customarily insured against, all of which insurance is in full force and effect. (t) Neither the Company nor the Subsidiary has, at any time during the last five years, directly or indirectly (i) made any unlawful contribution to any candidate for foreign office, or failed to disclose fully any contribution in violation of law, or (ii) made any payment to any federal or state governmental officer or official, or other person charged with similar public or quasi-public duties, other than payments required or permitted by the laws of the United States or any jurisdiction thereof. 7. 8 (u) Neither the Company nor the Subsidiary has taken, nor will either take, directly or indirectly, any action designed to or that might be reasonably expected to cause or result in stabilization or manipulation of the price of the Common Stock to facilitate the sale or resale of the Common Shares. (v) The Common Stock has been duly authorized for quotation on the Nasdaq National Market. (w) The Company is not aware of any state of facts that might reasonably be expected to result in any supplier to the Company or the Subsidiary failing to deliver or delaying delivery of goods, services, or other products to the Company or the Subsidiary, except for failures or delays that would not materially adversely affect the financial condition or results of operations of the Company. (x) Neither the Company nor the Subsidiary has received any notice, whether written or oral, from any distributor of the Company or the Subsidiary of termination of a distribution agreement between the Company or the Subsidiary and such distributor, and the Company is not aware of the revocation or impending revocation of any governmental permit necessary for the sale of the Company's or the Subsidiary's products in any state or country in which any such distributor has authority to sell such products. 3. REPRESENTATIONS AND WARRANTIES OF THE UNDERWRITERS. The Representative on behalf of the several Underwriters represents and warrants to the Company that the information set forth (i) on the cover page of the Prospectus with respect to price, underwriting discounts and commissions and terms of offering and (ii) under "Underwriting" in the Prospectus was furnished to the Company by and on behalf of the Underwriters for use in connection with the preparation of the Registration Statement and the Prospectus and is correct in all material respects. The Representative represents and warrants that it has been authorized by each of the other Underwriters as the Representative to enter into this Agreement on behalf of such other Underwriter and to act for such other Underwriter in the manner herein provided. 4. PURCHASE, SALE AND DELIVERY OF COMMON SHARES. On the basis of the representations, warranties and agreements herein contained, but subject to the terms and conditions herein set forth, the Company agrees to issue and sell to the Underwriters the 2,500,000 Firm Common Shares. The Underwriters agree, severally and not jointly, to purchase from the Company that number of Firm Common Shares set forth opposite such Underwriter's name on Exhibit A. The purchase price per share to be paid by the Underwriters shall be equal to the initial price to the public per share less an amount per share equal to the per share underwriting discount. The initial price to the public, which shall be a fixed price, and the underwriting discount will be determined by separate agreement among the Company and the Underwriters in substantially the form set forth as Exhibit B hereto. It shall be a condition to this Agreement and the obligation of the Company to sell and deliver the Firm Common Shares hereunder, and of you to purchase the Firm Common Shares in the manner described herein, that you shall purchase and pay for all the Firm Common Shares agreed to be purchased hereunder upon tender to you of all such Firm Common Shares in accordance with the terms hereof. 8. 9 Delivery of certificates for the Firm Common Shares to be purchased by the Underwriters and payment therefor shall be made at the offices of Pacific Growth Equities, Inc., 353 Sacramento Street, 16th Floor, San Francisco, California (or such other place as may be agreed upon by the Company and the Underwriters) at such time and date, not later than the third full business day following the first date that any of the Common Shares are released by you for sale to the public, as you shall designate by at least 48 hours prior notice to the Company (the "First Closing Date"); provided, however, that if the Prospectus is at any time prior to the First Closing Date recirculated to the public, the First Closing Date shall occur upon the later of the third full business day following the first date that any of the Common Shares are released by you for sale to the public or the date that is 48 hours after the date that the Prospectus has been so recirculated. Delivery of certificates for the Firm Common Shares shall be made by or on behalf of the Company to you for the respective accounts of the several Underwriters, against payment by the Underwriters of the purchase price therefor by certified or official bank or investment bank checks payable in next day funds to the order of the Company. The certificates for the Firm Common Shares shall be registered in such names and denominations as you shall have requested at least two full business days prior to the First Closing Date, and shall be made available for checking and packaging on the business day preceding the First Closing Date at a location in New York, New York, as may be designated by you. Time shall be of the essence, and delivery at the time and place specified in this Agreement is a further condition to the obligations of the Underwriters. In addition, on the basis of the representations, warranties and agreements herein contained, but subject to the terms and conditions herein set forth, the Company hereby grants an option to the several Underwriters to purchase, severally and not jointly, up to an aggregate of 375,000 Optional Common Shares at the purchase price per share to be paid for the Firm Common Shares, for use solely in covering any over-allotments made by you for the account of the Underwriters in the sale and distribution of the Firm Common Shares. The option granted hereunder may be exercised at any time (but not more than once) within 30 days after the first date that any of the Common Shares are released by you for sale to the public, upon notice by you to the Company setting forth the aggregate number of Optional Common Shares as to which the Underwriters are exercising the option, the names and denominations in which the certificates for such shares are to be registered and the time and place at which such certificates will be delivered. Such time of delivery (which may not be earlier than the First Closing Date), being herein referred to as the "Second Closing Date," shall be determined by you, but if at any time other than the First Closing Date shall not be earlier than three nor later than five full business days after delivery of such notice of exercise. The number of Optional Common Shares to be purchased by each Underwriter shall be determined by multiplying the number of Optional Common Shares to be sold by the Company pursuant to such notice of exercise by a fraction, the numerator of which is the number of Firm Common Shares to be purchased by such Underwriter as set forth opposite its name in Exhibit A and the denominator of which is 375,000 (subject to such adjustments to eliminate any fractional share purchases as you in your discretion may make). Certificates for the Optional Common Shares will be made available for checking and packaging on the business day preceding the Second Closing Date at a location in New 9. 10 York, New York, as may be designated by you. The manner of payment for and delivery of the Optional Common Shares shall be the same as for the Firm Common Shares as specified in the two preceding paragraphs. At any time before lapse of the option, you may cancel such option by giving written notice of such cancellation to the Company. If the option is cancelled or expires unexercised in whole or in part, the Company will deregister under the Act the number of Optional Common Shares as to which the option has not been exercised. You have advised the Company that each Underwriter has authorized you to accept delivery of its Common Shares, to make payment and to take receipt therefor. You, individually and not as the Representative of the Underwriters, may (but shall not be obligated to) make payment for any Common Shares to be purchased by any Underwriter whose funds shall not have been received by you by the First Closing Date or the Second Closing Date, as the case may be, for the account of such Underwriter, but any such payment shall not relieve such Underwriter from any of its obligations under this Agreement. Subject to the terms and conditions hereof, the Underwriters propose to make a public offering of the Common Shares as soon after the effective date of the Registration Statement as in your judgment is advisable and at the public offering price set forth on the cover page of and on the terms set forth in the Prospectus. 5. COVENANTS OF THE COMPANY. The Company covenants and agrees that: (a) The Company will use its best efforts to cause the Registration Statement and any amendment thereof, if not effective at the time and date this Agreement is executed and delivered by the parties hereto, to become effective. If the Registration Statement has become or becomes effective pursuant to Rule 430A of the Rules and Regulations, or the filing of the Prospectus is otherwise required under Rule 424(b) of the Rules and Regulations, the Company will file the Prospectus, properly completed, pursuant to the applicable paragraph of Rule 424(b) of the Rules and Regulations within the time period prescribed and will provide evidence satisfactory to you of such timely filing. The Company will promptly advise you in writing (i) of the receipt of any comments of the Commission, (ii) of any request of the Commission for amendment of or supplement to the Registration Statement (either before or after it becomes effective), any Preliminary Prospectus or the Prospectus or for additional information, (iii) when the Registration Statement shall have become effective, and (iv) of the issuance by the Commission of any stop order suspending the effectiveness of the Registration Statement or of the institution of any proceedings for that purpose. If the Commission shall enter any such stop order at any time, the Company shall use its best efforts to obtain the lifting of such order at the earliest possible moment. The Company shall not file any amendment or supplement to the Registration Statement (either before or after it becomes effective), any Preliminary Prospectus or the Prospectus of which you have not been furnished with a copy a reasonable time prior to such filing or to which you reasonably object or which is not in compliance with the Act and the Rules and Regulations. 10. 11 (b) The Company shall prepare and file with the Commission, promptly upon your request, any amendments or supplements to the Registration Statement or the Prospectus that in your judgment may be necessary or advisable to enable the Underwriters to continue the distribution of the Common Shares and shall use its best efforts to cause the same to become effective as promptly as possible. The Company shall fully and completely comply with the provisions of Rule 430A of the Rules and Regulations with respect to information omitted from the Registration Statement in reliance upon such Rule. (c) If at any time within the nine-month period referred to in Section 10(a)(3) of the Act during which a prospectus relating to the Common Shares is required to be delivered under the Act any event occurs, as a result of which the Prospectus, including any amendments or supplements, would include an untrue statement of a material fact, or omit to state any material fact required to be stated therein or necessary to make the statements therein not misleading, or if it is necessary at any time to amend the Prospectus, including any amendments or supplements, to comply with the Act or the Rules and Regulations, the Company shall promptly advise you thereof and shall promptly prepare and file with the Commission, at its own expense, an amendment or supplement which will correct such statement or omission or an amendment or supplement which will effect such compliance and shall use its best efforts to cause the same to become effective as soon as possible. In case any Underwriter is required to deliver a prospectus after such nine-month period, the Company, upon request, but at the expense of such Underwriter, shall promptly prepare such amendment or amendments to the Registration Statement and such Prospectus or Prospectuses as may be necessary to permit compliance with the requirements of Section 10(a)(3) of the Act. (d) As soon as practicable, but not later than 45 days after the end of the first quarter ending after one year following the "effective date of the Registration Statement" (as defined in Rule 158(c) of the Rules and Regulations), the Company shall make generally available to its security holders an earnings statement (which need not be audited) covering a period of 12 consecutive months beginning after the effective date of the Registration Statement which will satisfy the provisions of the last paragraph of Section 11(a) of the Act. (e) During such period as a prospectus is required by law to be delivered in connection with sales by an Underwriter or a dealer, the Company, at its expense, but only for the nine-month period referred to in Section 10(a)(3) of the Act, shall furnish to you copies of the Registration Statement, the Prospectus, the Preliminary Prospectus and all amendments and supplements to any such documents in each case as soon as available and in such quantities as you may request, for the purposes contemplated by the Act. (f) The Company shall cooperate with you and your counsel in order to qualify or register the Common Shares for sale under (or obtain exemptions from the application of) the Blue Sky laws of such jurisdictions as you designate, shall comply with such laws and shall continue such qualifications, registrations and exemptions in effect so long as reasonably required for the distribution of the Common Shares. The Company shall not be required to qualify as a foreign corporation or to file a general consent to service of process in any such jurisdiction where it is not presently qualified or where it would be subject to taxation as a 11. 12 foreign corporation. The Company shall advise you promptly of the suspension of the qualification or registration of (or any such exemption relating to) the Common Shares for offering, sale or trading in any jurisdiction or any initiation or threat of any proceeding for any such purpose, and in the event of the issuance of any order suspending such qualification, registration or exemption, the Company, with your cooperation, shall use its best efforts to obtain the withdrawal thereof. (g) During the period of five years hereafter, the Company shall furnish to you and, upon your request, each of the other Underwriters: (i) as soon as practicable after the end of each fiscal year, copies of the Annual Report of the Company containing the balance sheet of the Company as of the close of such fiscal year and statements of income, stockholders' equity and cash flows for the year then ended and the opinion thereon of the Company's independent public accountants; (ii) as soon as practicable after the filing thereof, copies of each proxy statement, Annual Report on Form 10-K, Quarterly Report on Form 10-Q, Report on Form 8-K or other report filed by the Company with the Commission, including the Report on Form SR required by Rule 463 of the Securities Act, the NASD or any securities exchange; and (iii) as soon as available, copies of any report or communication of the Company mailed generally to holders of its Common Stock. (h) During the period of 180 days after the first date any of the Common Shares are released by you for sale to the public, without your prior written consent (which consent may be withheld in your sole discretion), the Company shall not, other than upon the exercise of outstanding stock options and warrants disclosed in the Prospectus and other than the grant of options to employees under option plans described in the Prospectus and consistent with past practice, issue, offer, sell, grant options to purchase or otherwise dispose of any of the Company's equity securities or any other securities convertible into or exchangeable with its Common Stock or other equity security. (i) The Company shall apply the net proceeds of the sale of the Common Shares sold by it substantially in accordance with its statements under the caption "Use of Proceeds" in the Prospectus. (j) The Company shall use its best efforts to qualify or register its Common Stock for sale in non-issuer transactions under (or obtain exemptions from the application of) the Blue Sky laws of the State of California (and thereby permit market making transactions and secondary trading in the Company's Common Stock in California), shall comply with such Blue Sky laws and shall continue such qualifications, registrations and exemptions in effect for a period of five years after the date hereof. (k) Prior to the Second Closing Date, the Company shall not repurchase or otherwise acquire any of the Company's Common Stock or declare or pay any dividend or make any other distribution upon its Common Stock. (l) For a period of five years after the date hereof, the Company shall use its best efforts to maintain the listing of the Common Stock on the Nasdaq National Market. 12. 13 (m) If at any time during the 25-day period after the Registration Statement becomes effective any rumor, publication or event relating to or affecting the Company shall occur as a result of which in your opinion the market price for the shares has been or is likely to be materially affected (regardless of whether such rumor, publication or event necessitates a supplement to or amendment of the Prospectus), the Company will, after written notice from you advising the Company to the effect set forth above, forthwith prepare, consult with you concerning the substance of, and disseminate a press release or other public statement, reasonably satisfactory to you, responding to or commenting on such rumor, publication or event. You may, in your sole discretion, waive in writing the performance by the Company of any one or more of the foregoing covenants or extend the time for their performance. 6. PAYMENT OF EXPENSES. Whether or not the transactions contemplated hereunder are consummated or this Agreement becomes effective or is terminated, the Company agrees to pay all costs, fees and expenses incurred by it in connection with the performance of its obligations hereunder and in connection with the transactions contemplated hereby, including without limiting the generality of the foregoing, (i) all expenses incident to the issuance and delivery of the Common Shares (including all printing and engraving costs), (ii) all fees and expenses of the registrar and transfer agent of the Common Stock, (iii) all necessary issue, transfer and other stamp taxes in connection with the issuance and sale of the Common Shares to the Underwriters, (iv) all fees and expenses of the Company's counsel and the Company's independent accountants, (v) all costs and expenses incurred in connection with the preparation, printing, filing, shipping and distribution of the Registration Statement, each Preliminary Prospectus and the Prospectus (including all exhibits and financial statements) and all amendments and supplements provided for herein, this Agreement, the Agreement among Underwriters, the Selected Dealers Agreement, the Underwriters' Questionnaire, the Underwriters' Power of Attorney, and the Blue Sky Memorandum, (vi) all filing fees, attorneys' fees and expenses incurred by the Company or the Underwriters in connection with qualifying or registering (or obtaining exemptions from the qualification or registration of) all or any part of the Common Shares for offer and sale under the Blue Sky laws, and (vii) the filing fee of the NASD. Except as provided in this Section 6, Section 8 and Section 10 hereof, the Underwriters shall pay all of their expenses, including the fees and disbursements of their counsel (excluding those relating to qualification, registration or exemption under the Blue Sky laws and the Blue Sky Memorandum referred to above). 7. CONDITIONS OF THE OBLIGATIONS OF THE UNDERWRITERS. The obligations of the Underwriters to purchase and pay for the Firm Common Shares on the First Closing Date and the Optional Common Shares on the Second Closing Date shall be subject to the accuracy of the representations and warranties on the part of the Company herein set forth as of the date hereof and as of the First Closing Date or the Second Closing Date, as the case may be, to the accuracy of the statements of Company officers made pursuant to the provisions hereof, to the performance by the Company of its obligations hereunder, and to the following additional conditions: 13. 14 (a) The Registration Statement shall have become effective not later than 5:00 P.M., Washington, D.C. Time, on the date of this Agreement, or at such later time as shall have been consented to by you; if the filing of the Prospectus, or any supplement thereto, is required pursuant to Rule 424(b) of the Rules and Regulations, the Prospectus shall have been filed in the manner and within the time period required by Rule 424(b) of the Rules and Regulations; and prior to such Closing Date, no stop order suspending the effectiveness of the Registration Statement shall have been issued and no proceedings for that purpose shall have been instituted or shall be pending or, to the knowledge of the Company or you, shall be contemplated by the Commission; and any request of the Commission for inclusion of additional information in the Registration Statement, or otherwise, shall have been complied with to your satisfaction. (b) You shall be satisfied that since the respective dates as of which information is given in the Registration Statement and Prospectus, (i) there shall not have been any change in the capital stock of the Company other than pursuant to the exercise of outstanding options and warrants disclosed in the Prospectus or any material change in the indebtedness of the Company or the Subsidiary, (ii) except as set forth or contemplated by the Registration Statement or the Prospectus, no material verbal or written agreement or other transaction shall have been entered into by the Company or the Subsidiary, that is not in the ordinary course of business or that could result in a material reduction in the future earnings of the Company, (iii) no loss or damage (whether or not insured) to the property of the Company or the Subsidiary shall have been sustained that materially and adversely affects or may affect the condition (financial or otherwise), business, results of operations or prospects of the Company, (iv) no legal or governmental action, suit or proceeding affecting the Company that is material to the Company or that affects or may affect the transactions contemplated by this Agreement shall have been instituted or threatened, and (v) there shall not have been any material change in the condition (financial or otherwise), business, management, results of operations or prospects of the Company that makes it impractical or inadvisable in the judgment of the Representative to proceed with the public offering or purchase of the Common Shares contemplated hereby. (c) There shall have been furnished to you as representative of the Underwriters on each Closing Date, in form and substance satisfactory to you: (i) An opinion of Wilson, Sonsini, Goodrich & Rosati, counsel for the Company, addressed to the Underwriters and dated the First Closing Date, or the Second Closing Date, as the case may be, as set forth in Exhibit C-1 hereto. In rendering such opinions, such counsel may rely (i) as to matters of local law, on opinions of local counsel, (ii) as to matters of patent and other intellectual property matters on the opinion of [ ], and (iii) as to matters of fact, on certificates of officers of the Company or governmental officials, provided that such counsel's opinion states that such counsel is doing so and that the Underwriters are justified in relying on such opinions or certificates and that copies of such opinions of local counsel or certificates are attached to such counsel's opinion. 14. 15 (ii) An opinion of [ ], special patent counsel for the Company, addressed to the Underwriters and dated the First Closing Date, or the Second Closing Date, as the case may be, as set forth in Exhibit C-2 hereto. (iii) An opinion of [ ], counsel for regulatory matters for the Company, addressed to the Underwriters and dated the First Closing Date, or the Second Closing Date, as the case may be, as set forth in Exhibit C-3 hereto. In rendering such opinions, such counsel may rely as to matters of local law on opinions of local counsel, and as to matters of fact on certificates of officers of the Company or governmental officials, provided that such counsel's opinion states that such counsel is so doing and that the Underwriters are justified in relying on such opinions of local counsel or certificates and that copies of such opinions of local counsel or certificates are attached to such counsel's opinion. (iv) Such opinion or opinions of Cooley Godward Castro Huddleson & Tatum, counsel for the Underwriters, dated the First Closing Date or the Second Closing Date, as the case may be, with respect to the incorporation of the Company, the sufficiency of all corporate proceedings and other legal matters relating to this Agreement, the validity of the Common Shares, the Registration Statement and the Prospectus and other related matters as you may reasonably require, and the Company shall have furnished to such counsel such documents and shall have exhibited to them such papers and records as they may reasonably request for the purpose of enabling them to pass upon such matters. In connection with such opinions, such counsel may rely on representations or certificates of officers of the Company and governmental officials. (v) A certificate of the Company executed by the Chief Executive Officer or President and the chief financial or accounting officer of the Company, dated the First Closing Date or the Second Closing Date, as the case may be, to the effect that: (1) The representations and warranties of the Company set forth in Section 2 of this Agreement are true and correct as of the date of this Agreement and as of the First Closing Date or the Second Closing Date, as the case may be, and the Company has complied with all the agreements and satisfied all the conditions on its part to be performed or satisfied on or prior to such Closing Date; (2) The Commission has not issued any order preventing or suspending the use of the Prospectus or any Preliminary Prospectus filed as a part of the Registration Statement or any amendment thereto; no stop order suspending the effectiveness of the Registration Statement has been issued; and to the best of the knowledge of the respective signers, no proceedings for that purpose have been instituted or are pending or contemplated under the Act; (3) Each of the respective signers of the certificate has carefully examined the Registration Statement and the Prospectus; in his opinion and to the best of his knowledge, the Registration Statement and the Prospectus and any amendments or supplements 15. 16 thereto contain all statements required to be stated therein regarding the Company or the Subsidiary; and neither the Registration Statement nor the Prospectus nor any amendment or supplement thereto includes any untrue statement of a material fact or omits to state any material fact required to be stated therein or necessary to make the statements therein not misleading; (4) Since the initial date on which the Registration Statement was filed, no agreement, written or oral, transaction or event has occurred that should have been set forth in an amendment to the Registration Statement or in a supplement to or amendment of any prospectus which has not been disclosed in such a supplement or amendment; (5) Since the respective dates as of which information is given in the Registration Statement and the Prospectus, and except as disclosed in or contemplated by the Prospectus, there has not been any material adverse change or a development involving a material adverse change in the condition (financial or otherwise), business, properties, results of operations, management or prospects of the Company or the Subsidiary; no legal or governmental action, suit or proceeding is pending or threatened against the Company or the Subsidiary that is material to the Company, whether or not arising from transactions in the ordinary course of business, or that may adversely affect the transactions contemplated by this Agreement; since such dates and except as so disclosed, neither the Company nor the Subsidiary has entered into any verbal or written agreement or other transaction that is not in the ordinary course of business or that could result in a material reduction in the future earnings of the Company; neither the Company nor the Subsidiary has incurred any material liability or obligation, direct, contingent or indirect, made any change in its capital stock, made any material change in its short-term debt or funded debt or repurchased or otherwise acquired any of its capital stock; and the Company has not declared or paid any dividend, or made any other distribution, upon its outstanding capital stock payable to stockholders of record on a date prior to such Closing Date; and (6) Since the respective dates as of which information is given in the Registration Statement and the Prospectus and except as disclosed in or contemplated by the Prospectus, neither the Company nor the Subsidiary has sustained any material loss or damage by strike, fire, flood, windstorm, accident or other calamity (whether or not insured). (vi) On the date Preliminary Prospectuses are first circulated, the date immediately preceding the date this Agreement is executed, the First Closing Date, and the Second Closing Date (if applicable), a letter addressed to you as representative of the Underwriters from KPMG Peat Marwick LLP, independent accountants, dated the date of its delivery as specified above, in form and substance satisfactory to you. (vii) On or before the First Closing Date, each director of the Company, each officer of the Company, and each person who owns beneficially 1% or more of the outstanding shares of Common Stock (calculated without regard to the offering contemplated hereby) or options to purchase 1% or more of the outstanding shares of Common Stock (calculated without regard to the offering contemplated hereby) as of the date hereof, in form and substance satisfactory to you, confirming that for a period of 180 days after the first date any of the 16. 17 Common Shares are released by you for sale to the public, such person will not directly or indirectly sell or offer to sell or otherwise dispose of or transfer any shares of Common Stock or any right to acquire such shares without your prior written consent, which consent may be withheld in your sole discretion. All such opinions, certificates, letters and documents shall be deemed in compliance with the provisions hereof only if they are satisfactory to you and to Cooley Godward Castro Huddleson & Tatum, counsel for the Underwriters. The Company shall furnish you with such manually signed or conformed copies of such opinions, certificates, letters and documents as you request. Any certificate signed by any officer of the Company and delivered to you as representative of the Underwriters or to counsel for the Underwriters shall be deemed to be a representation and warranty by the Company to the Underwriters as to the statements made therein. If any condition to the Underwriters' obligations hereunder to be satisfied prior to or at the First Closing Date is not so satisfied, this Agreement at your election will terminate upon notification by you to the Company without liability on the part of the Underwriters or the Company except for the expenses to be paid or reimbursed by the Company pursuant to Sections 6 and 8 hereof and except to the extent provided in Section 10 hereof. 8. REIMBURSEMENT OF UNDERWRITERS' EXPENSES. Notwithstanding any other provisions hereof, if this Agreement shall be terminated by you pursuant to Section 7, or if the sale to the Underwriters of the Common Shares at the First Closing is not consummated because of any refusal, inability or failure on the part of the Company to perform any agreement herein or to comply with any provision hereof, the Company agrees to reimburse you upon demand for all out-of-pocket expenses that shall have been reasonably incurred by you in connection with the proposed purchase and the sale of the Common Shares, including but not limited to fees and disbursements of counsel, printing expenses, travel expenses, postage, telegraph charges and telephone charges relating directly to the offering contemplated hereby. Any such termination shall be without liability of any party to any other party except that the provisions of this Section, Section 6 and Section 10 shall at all times be effective and shall apply. 9. EFFECTIVENESS OF REGISTRATION STATEMENT. You and the Company shall use your and its best efforts to cause the Registration Statement to become effective, to prevent the issuance of any stop order suspending the effectiveness of the Registration Statement and, if such stop order be issued, to obtain as soon as possible the lifting thereof. 10. INDEMNIFICATION. (a) The Company agrees to indemnify and hold harmless each Underwriter and each person, if any, who controls any Underwriter within the meaning of the Act against any losses, claims, damages, liabilities or expenses, joint or several, to which any Underwriter or any such controlling person may become subject, under the Act, the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or other federal or state statutory law or regulation, or at common law or otherwise (including in settlement of any litigation, if such settlement is effected 17. 18 with the written consent of the Company), insofar as such losses, claims, damages, liabilities or expenses (or actions in respect thereof as contemplated below) arise out of or are based upon any untrue statement or alleged untrue statement of any material fact contained in the Registration Statement, any Preliminary Prospectus, the Prospectus, or any amendment or supplement thereto, or arise out of or are based upon the omission or alleged omission to state in any of them a material fact required to be stated therein or necessary to make the statements in any of them not misleading, or arise out of or are based in whole or in part on any inaccuracy in the representations and warranties of the Company contained herein or any failure of the Company to perform its obligations hereunder or under law; and will reimburse each Underwriter and each such controlling person for any legal and other expenses as such expenses are reasonably incurred by such Underwriter or such controlling person in connection with investigating, defending, settling, compromising or paying any such loss, claim, damage, liability, expense or action; provided, however, that the Company will not be liable in any such case to the extent that any such loss, claim, damage, liability or expense arises out of or is based upon an untrue statement or alleged untrue statement or omission or alleged omission made in the Registration Statement, any Preliminary Prospectus, the Prospectus or any amendment or supplement thereto in reliance upon and in conformity with the information furnished to the Company pursuant to Section 3 hereof. In addition to its other obligations under this Section 10(a), the Company agrees that, as an interim measure during the pendency of any claim, action, investigation, inquiry or other proceeding arising out of or based upon any statement or omission, or any alleged statement or omission, or any inaccuracy in the representations and warranties of the Company herein or failure to perform its obligations hereunder, all as described in this Section 10(a), it will reimburse each Underwriter on a quarterly basis for all reasonable legal or other expenses incurred in connection with investigating or defending any such claim, action, investigation, inquiry or other proceeding, notwithstanding the absence of a judicial determination as to the propriety and enforceability of the Company's obligation to reimburse each Underwriter for such expenses and the possibility that such payments might later be held to have been improper by a court of competent jurisdiction. To the extent that any such interim reimbursement payment is so held to have been improper, each Underwriter that received such improper payment shall promptly return it to the Company together with interest, compounded daily, determined on the basis of the prime rate (or other commercial lending rate for borrowers of the highest credit standing) announced from time to time by Bank of America NT&SA, San Francisco, California (the "Prime Rate"). Any such interim reimbursement payments that are not made to an Underwriter within 30 days of a request for reimbursement, shall bear interest at the Prime Rate from the date of such request. This indemnity agreement will be in addition to any liability that the Company may otherwise have. (b) Each Underwriter will severally indemnify and hold harmless the Company, each of its directors, each of its officers who signed the Registration Statement and each person, if any, who controls the Company within the meaning of the Act, against any losses, claims, damages, liabilities or expenses to which the Company, or any such director, officer or controlling person may become subject, under the Act, the Exchange Act, or other federal or state statutory law or regulation, or at common law or otherwise (including in settlement of any litigation, if such settlement is effected with the written consent of such Underwriter), insofar as such losses, claims, damages, liabilities or expenses (or actions in respect thereof as 18. 19 contemplated below) arise out of or are based upon any untrue or alleged untrue statement of any material fact contained in the Registration Statement, any Preliminary Prospectus, the Prospectus, or any amendment or supplement thereto, or arise out of or are based upon the omission or alleged omission to state therein a material fact required to be stated therein or necessary to make the statements therein not misleading, in each case to the extent, but only to the extent, that such untrue statement or alleged untrue statement or omission or alleged omission was made in the Registration Statement, any Preliminary Prospectus, the Prospectus, or any amendment or supplement thereto, in reliance upon and in conformity with the information furnished to the Company pursuant to Section 3 hereof; and will reimburse the Company, or any such director, officer or controlling person for any legal and other expense reasonably incurred by the Company, or any such director, officer or controlling person in connection with investigating, defending, settling, compromising or paying any such loss, claim, damage, liability, expense or action. In addition to its other obligations under this Section 10(b), each Underwriter severally agrees that, as an interim measure during the pendency of any claim, action, investigation, inquiry or other proceeding arising out of or based upon any statement or omission, or any alleged statement or omission, described in this Section 10(b) which relates to information furnished to the Company pursuant to Section 3 hereof, it will reimburse the Company on a quarterly basis for all reasonable legal or other expenses incurred in connection with investigating or defending any such claim, action, investigation, inquiry or other proceeding, notwithstanding the absence of a judicial determination as to the propriety and enforceability of the Underwriters' obligation to reimburse the Company for such expenses and the possibility that such payments might later be held to have been improper by a court of competent jurisdiction. To the extent that any such interim reimbursement payment is so held to have been improper, the Company shall promptly return it to the Underwriters together with interest, compounded daily, determined on the basis of the Prime Rate. Any such interim reimbursement payments that are not made to the Company within 30 days of a request for reimbursement, shall bear interest at the Prime Rate from the date of such request. This indemnity agreement will be in addition to any liability that such Underwriter may otherwise have. (c) Promptly after receipt by an indemnified party under this Section of notice of the commencement of any action, such indemnified party will, if a claim in respect thereof is to be made against an indemnifying party under this Section, notify the indemnifying party in writing of the commencement thereof; but the omission so to notify the indemnifying party will not relieve it from any liability it may have to any indemnified party for contribution or otherwise under the indemnity agreement contained in this Section to the extent it is not prejudiced as a proximate result of such failure. In case any such action is brought against any indemnified party and such indemnified party seeks or intends to seek indemnity from an indemnifying party, the indemnifying party will be entitled to participate in, and, to the extent that it may wish, jointly with all other indemnifying parties similarly notified, to assume the defense thereof with counsel reasonably satisfactory to such indemnified party; provided, however, if the defendants in any such action include both the indemnified party and the indemnifying party and the indemnified party shall have reasonably concluded that there may be a conflict between the positions of the indemnifying party and the indemnified party in conducting the defense of any such action or that there may be legal defenses available to it and/or other indemnified parties 19. 20 which are different from or additional to those available to the indemnifying party, the indemnified party or parties shall have the right to select separate counsel to assume such legal defenses and to otherwise participate in the defense of such action on behalf of such indemnified party or parties. Upon receipt of notice from the indemnifying party to such indemnified party of its election so to assume the defense of such action and approval by the indemnified party of counsel, the indemnifying party will not be liable to such indemnified party under this Section for any legal or other expenses subsequently incurred by such indemnified party in connection with the defense thereof unless (i) the indemnified party shall have employed counsel in connection with the assumption of legal defenses in accordance with the proviso to the next preceding sentence (it being understood, however, that the indemnifying party shall not be liable for the expenses of more than one separate counsel, approved by the Representative in the case of paragraph (a), representing the indemnified parties who are parties to such action) or (ii) the indemnifying party shall not have employed counsel reasonably satisfactory to the indemnified party to represent the indemnified party within a reasonable time after notice of commencement of the action, in each of which cases the fees and expenses of counsel shall be at the expense of the indemnifying party. (d) If the indemnification provided for in this Section is required by its terms but is for any reason held to be unavailable to or otherwise insufficient to hold harmless an indemnified party under paragraphs (a), (b) or (c) in respect of any losses, claims, damages, liabilities or expenses referred to herein, then each applicable indemnifying party shall contribute to the amount paid or payable by such indemnified party as a result of any losses, claims, damages, liabilities or expenses referred to herein (i) in such proportion as is appropriate to reflect the relative benefits received by the Company and the Underwriters from the offering of the Common Shares or (ii) if the allocation provided by clause (i) above is not permitted by applicable law, in such proportion as is appropriate to reflect not only the relative benefits referred to in clause (i) above but also the relative fault of the Company and the Underwriters in connection with the statements or omissions or inaccuracies in the representations and warranties herein which resulted in such losses, claims, damages, liabilities or expenses, as well as any other relevant equitable considerations. The respective relative benefits received by the Company and the Underwriters shall be deemed to be in the same proportion, in the case of the Company as the total price paid to the Company for the Common Shares sold by it to the Underwriters (net of underwriting commissions but before deducting expenses) bears to the total price to the public set forth on the cover of the Prospectus, and in the case of the Underwriters as the underwriting discounts and commissions received by them bears to the total price to the public set forth on the cover of the Prospectus. The relative fault of the Company and the Underwriters shall be determined by reference to, among other things, whether the untrue or alleged untrue statement of a material fact or the omission or alleged omission to state a material fact or the inaccurate or the alleged inaccurate representation and/or warranty relates to information supplied by the Company or the Underwriters and the parties' relative intent, knowledge, access to information and opportunity to correct or prevent such statement or omission. The amount paid or payable by a party as a result of the losses, claims, damages, liabilities and expenses referred to above shall be deemed to include, subject to the limitations set forth in subparagraph (c) of this Section, any legal or other fees or expenses reasonably incurred by such party in connection with investigating or defending any action or claim. The 20. 21 provisions set forth in subparagraph (c) of this Section with respect to notice of commencement of any action shall apply if a claim for contribution is to be made under this subparagraph (d); provided, however, that no additional notice shall be required with respect to any action for which notice has been given under subparagraph (c) for purposes of indemnification. The Company and the Underwriters agree that it would not be just and equitable if contribution pursuant to this Section were determined solely by pro rata allocation (even if the Underwriters were treated as one entity for such purpose) or by any other method of allocation that does not take account of the equitable considerations referred to in the immediately preceding paragraph. Notwithstanding the provisions of this Section, the Underwriters shall not be required to contribute any amount in excess of the amount of the total underwriting commissions received by the Underwriters in connection with the Common Shares underwritten by them and distributed to the public. No person guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the Act) shall be entitled to contribution from any person who was not guilty of such fraudulent misrepresentation. The Underwriters' obligations to contribute pursuant to this Section are several in proportion to their respective underwriting commitments and not joint. (e) It is agreed that any controversy arising out of the operation of the interim reimbursement arrangements set forth in Sections 10(a) and 10(b) hereof, including the amounts of any requested reimbursement payments and the method of determining such amounts, shall be settled by arbitration conducted under the provisions of the Code of Arbitration Procedure of the NASD. Any such arbitration must be commenced by service of a written demand for arbitration or written notice of intention to arbitrate, therein electing the arbitration tribunal. In the event the party demanding arbitration does not make such designation of an arbitration tribunal in such demand or notice, then the party responding to said demand or notice is authorized to do so. Such an arbitration would be limited to the operation of the interim reimbursement provisions contained in Sections 10(a) and 10(b) hereof and would not resolve the ultimate propriety or enforceability of the obligation to reimburse expenses which is created by the provisions of such Sections 10(a) and 10(b) hereof. 11. DEFAULT OF UNDERWRITERS. It shall be a condition to this Agreement and the obligation of the Company to sell and deliver the Common Shares hereunder, and of the Underwriters to purchase the Common Shares in the manner as described herein, that, except as hereinafter in this paragraph provided, the Underwriters shall purchase and pay for all the Common Shares agreed to be purchased hereunder upon tender to the Underwriters of all such shares in accordance with the terms hereof. If any Underwriter defaults in its obligations to purchase Common Shares hereunder on either the First or Second Closing Date and the aggregate number of Common Shares which such defaulting Underwriter or Underwriters agreed but failed to purchase on such Closing Date does not exceed 10% of the total number of Common Shares which the Underwriters are obligated to purchase on such Closing Date, the nondefaulting Underwriters shall be obligated severally, in proportion to their respective commitments hereunder, to purchase the Common Shares which such defaulting Underwriter or Underwriters agreed but failed to purchase on such Closing Date. If any Underwriter or Underwriters so default and the aggregate number of Common Shares with respect to which such default occurs is more than the above percentage and arrangements satisfactory to you and the Company for the purchase of such Common Shares by other persons are not made within 48 hours after such 21. 22 default, this Agreement will terminate without liability on the part of the Company except for the expenses to be paid by the Company pursuant to Sections 6 and 8 hereof and except to the extent provided in Section 10 hereof. In the event Common Shares to which a default relates are to be purchased by another party or parties, the Underwriters or the Company shall have the right to postpone the First or Second Closing Date, as the case may be, for not more than five business days in order that the necessary changes in the Registration Statement, Prospectus and any other documents, as well as any other arrangements, may be effected. As used in this Agreement, the term "Underwriters" includes any person substituted for an Underwriter under this Section. Nothing herein will relieve a defaulting Underwriter from liability for its default. 12. EFFECTIVE DATE. This Agreement shall become effective immediately as to Sections 6, 8, 10, 13 and 14 and, as to all other provisions, (i) if at the time of execution of this Agreement the Registration Statement has not become effective, at 2:00 P.M., California time, on the first full business day following the effectiveness of the Registration Statement, or (ii) if at the time of execution of this Agreement the Registration Statement has been declared effective, at 2:00 P.M., California time, on the first full business day following the date of execution of this Agreement; but this Agreement shall nevertheless become effective at such earlier time after the Registration Statement becomes effective as you may determine on and by notice to the Company or by release of any of the Common Shares for sale to the public. For the purposes of this Section, the Common Shares shall be deemed to have been so released upon the release for publication of any newspaper advertisement relating to the Common Shares or upon the release by you of telegrams (i) advising the Underwriters that the Common Shares are released for public offering, or (ii) offering the Common Shares for sale to securities dealers, whichever may occur first. 13. TERMINATION. Without limiting the right to terminate this Agreement pursuant to any other provision hereof: (a) This Agreement may be terminated by the Company by notice to you or by you by notice to the Company at any time prior to the time this Agreement shall become effective as to all its provisions, and any such termination shall be without liability on the part of the Company to any Underwriter (except for the expenses to be paid or reimbursed by the Company pursuant to Sections 6 and 8 hereof and except to the extent provided in Section 10 hereof) or of any Underwriter to the Company (except to the extent provided in Section 10 hereof). (b) This Agreement may also be terminated by you prior to the First Closing Date by notice to the Company (i) if additional material governmental restrictions, not in force and effect on the date hereof, shall have been imposed upon trading in securities generally or minimum or maximum prices shall have been generally established on the New York Stock Exchange or on the American Stock Exchange or in the over the counter market by the NASD, or trading in securities generally shall have been suspended on either such Exchange or in the over the counter market by the NASD, or a general banking moratorium shall have been established by federal, New York or California authorities, (ii) if an outbreak of major hostilities 22. 23 or other national or international calamity or any substantial change in political, financial or economic conditions shall have occurred or shall have accelerated or escalated to such an extent, as, in your judgment, to affect adversely the marketability of the Common Shares or securities in general, (iii) if any adverse event shall have occurred or shall exist which makes untrue or incorrect in any material respect any statement or information contained in the Registration Statement or Prospectus or which is not reflected in the Registration Statement or Prospectus but should be reflected therein in order to make the statements or information contained therein not misleading in any material respect, or (iv) if there shall be any action, suit or proceeding pending or threatened, or there shall have been any development or prospective development involving particularly the business or properties or securities of the Company or the transactions contemplated by this Agreement, which, in the reasonable judgment of the Representative, may materially and adversely affect the Company's business or earnings and makes it impracticable or inadvisable to offer or sell the Common Shares. Any termination pursuant to this subsection (b) shall without liability on the part of any Underwriter to the Company or on the part of the Company to any Underwriter (except for expenses to be paid or reimbursed by the Company pursuant to Sections 6 and 8 hereof and except to the extent provided in Section 10 hereof). (c) This Agreement shall also terminate at 5:00 P.M., California time, on the tenth full business day after the Registration Statement shall have become effective if the initial public offering price of the Common Shares shall not then as yet have been determined as provided in Section 4 hereof. Any termination pursuant to this subsection (c) shall be without liability on the part of any Underwriter to the Company or on the part of the Company to any Underwriter (except for expenses to be paid or reimbursed by the Company pursuant to Sections 6 and 8 hereof and except to the extent provided in Section 10 hereof.) 14. REPRESENTATIONS AND INDEMNITIES TO SURVIVE DELIVERY. The respective indemnities, agreements, representations, warranties and other statements of the Company, of its officers and of the several Underwriters set forth in or made pursuant to this Agreement will remain in full force and effect, regardless of any investigation made by or on behalf of any Underwriter or the Company or any of its or their partners, officers or directors or any controlling person, as the case may be, and will survive delivery of and payment for the Common Shares sold hereunder and any termination of this Agreement. 15. NOTICES. All communications hereunder shall be in writing and, if sent to the Underwriters shall be mailed, delivered or telegraphed and confirmed to you at 353 Sacramento Street, 16th Floor, San Francisco, California 94111, Attention: Mitchell Stevko, with a copy to Cooley Godward Castro Huddleson & Tatum, Five Palo Alto Square, 3000 El Camino Real, Palo Alto, California 94306-2155, Attention: Alan C. Mendelson; and if sent to the Company shall be mailed, delivered or telegraphed and confirmed to the Company at 1440 Fourth Street, 23. 24 Berkeley, California 94710, Attention: John P. Davis, with a copy to Wilson, Sonsini, Goodrich & Rosati, PC, 650 Page Mill Road, Palo Alto, California 94304-1050, Attention: Aron J. Alter. The Company or you may change the address for receipt of communications hereunder by giving notice to the others. 16. SUCCESSORS. This Agreement will inure to the benefit of and be binding upon the parties hereto, including any substitute Underwriters pursuant to Section 11 hereof, and to the benefit of the officers and directors and controlling persons referred to in Section 10, and in each case their respective successors, personal representatives and assigns, and no other person will have any right or obligation hereunder. No such assignment shall relieve any party of its obligations hereunder. The term "successors" shall not include any purchaser of the Common Shares as such from any Underwriter merely by reason of such purchase. 17. REPRESENTATION OF UNDERWRITERS. You will act as Representative for the several Underwriters in connection with all dealings hereunder, and any action under or in respect of this Agreement taken by you, as Representative, will be binding upon all the Underwriters. 18. PARTIAL UNENFORCEABILITY. The invalidity or unenforceability of any Section, paragraph or provision of this Agreement shall not affect the validity or enforceability of any other Section, paragraph or provision hereof. If any Section, paragraph or provision of this Agreement is for any reason determined to be invalid or unenforceable, there shall be deemed to be made such minor changes (and only such minor changes) as are necessary to make it valid and enforceable. 19. APPLICABLE LAW. This Agreement shall be governed by and construed in accordance with the internal laws (and not the laws pertaining to conflicts of laws) of the State of California. 20. GENERAL. This Agreement constitutes the entire agreement of the parties to this Agreement and supersedes all prior written or oral and all contemporaneous oral agreements, understandings and negotiations with respect to the subject matter hereof. This Agreement may be executed in several counterparts, each one of which shall be an original, and all of which shall constitute one and the same document. In this Agreement, the masculine, feminine and neuter genders and the singular and the plural include one another. The section headings in this Agreement are for the convenience of the parties only and will not affect the construction or interpretation of this Agreement. This Agreement may be amended or modified, and the observance of any term of this Agreement may be waived, only by a writing signed by the Company and you. 24. 25 If the foregoing is in accordance with your understanding of our agreement, kindly sign and return to us the enclosed copies hereof, whereupon it will become a binding agreement among the Company and the Underwriters, all in accordance with its terms. Very truly yours, CALYPTE BIOMEDICAL CORPORATION By: --------------------------- The foregoing Underwriting Agreement is hereby confirmed and accepted by us in San Francisco, California as of the date first above written. PACIFIC GROWTH EQUITIES, INC. By: ------------------------------------- Acting on Behalf of the several Underwriters 25. 26 EXHIBIT A NUMBER OF FIRM COMMON NAME OF UNDERWRITER SHARES TO BE PURCHASED TOTAL: 2,500,000 27 EXHIBIT B PRICE DETERMINATION AGREEMENT Referring to Section 4 of the Underwriting Agreement dated __________ ___, 1996, among the Company and Pacific Growth Equities, Inc., acting as the representative for the Underwriters as therein defined, with respect to the purchase and sale of the Common Shares, we hereby confirm our agreement that the initial public offering price of the Common Shares shall be $____ per share; that the underwriting discount shall be $______ per share; and that the purchase price to be paid by the Underwriters for the Common Shares to be purchased from the Company shall be $______ per share. This Agreement may be executed in various counterparts which together shall constitute one and the same Agreement. PACIFIC GROWTH EQUITIES, INC. By ------------------------------- Acting on Behalf of the several Underwriters CALYPTE BIOMEDICAL CORPORATION By ------------------------------- 28 EXHIBIT C-1 OPINION OF WILSON, SONSINI, GOODRICH& ROSATI, PC (1) Each of the Company and the entities listed on Appendix A hereto (each, a "Subsidiary") has been duly incorporated (or otherwise formed) and is validly existing as a corporation in good standing under the laws of its jurisdiction of incorporation, and the Company and each Subsidiary is duly qualified to do business as a foreign corporation and is in good standing in all other jurisdictions where the ownership or leasing of properties or the conduct of its business requires such qualification, except for jurisdictions in which the failure so to qualify would not have a material adverse effect on the Company, and each has full corporate power and authority to own its properties and conduct its business as described in the Registration Statement; (2) All of the outstanding shares of common stock of each entity listed on Appendix A hereto are owned by the Company or one or more other corporations whose outstanding common stock is owned directly or indirectly by the Company. (3) The authorized, issued and outstanding capital stock of the Company is as set forth under the caption "Capitalization" in the Prospectus; all necessary and proper corporate proceedings have been taken in order to authorize validly such authorized Common Stock; all outstanding shares of Common Stock (including the Firm Common Shares and any Optional Common Shares) have been duly and validly issued, are fully paid and nonassessable, have been issued in compliance with federal and state securities laws, were not issued in violation of or subject to any preemptive rights or other rights to subscribe for or purchase any securities and conform to the description thereof contained in the Prospectus; (4) The certificates evidencing the Common Shares to be delivered hereunder are in due and proper form under Delaware law, and when duly countersigned by the Company's transfer agent and registrar, and delivered to you or upon your order against payment of the agreed consideration therefor in accordance with the provisions of the Underwriting Agreement, the Common Shares represented thereby will be duly authorized and validly issued, fully paid and nonassessable, will not have been issued in violation of or subject to any preemptive rights or, to such counsel's knowledge, other rights to subscribe for or purchase securities and will conform in all respects to the description thereof contained in the Prospectus; (5) Except as disclosed in or specifically contemplated by the Prospectus, to our knowledge, there are no outstanding options, warrants or other rights calling for the issuance of, and no commitments, plans or arrangements to issue, any shares of capital stock of the Company or any security convertible into or exchangeable for capital stock of the Company; 1. 29 (6) The Company has full right, power and authority to enter into the Underwriting Agreement and to sell and deliver the Common Shares to the several Underwriters; the Underwriting Agreement has been duly and validly authorized by all necessary corporate action by the Company, has been duly and validly executed and delivered by and on behalf of the Company, and is a valid and binding agreement of the Company in accordance with its terms, except as enforceability may be limited by general equitable principles, bankruptcy, insolvency, reorganization, moratorium or other laws affecting creditors' rights generally and except as to those provisions relating to indemnity or contribution for liabilities arising under the Act as to which no opinion need be expressed; and no approval, authorization, order, consent, registration, filing, qualification, license or permit of or with any court, regulatory, administrative or other governmental body is required for the execution and delivery of the Underwriting Agreement by the Company or the consummation of the transactions contemplated by the Underwriting Agreement, except such as have been obtained and are in full force and effect under the Act and the Securities Exchange Act of 1934, as amended (the "Exchange Act") and such as may be required under applicable Blue Sky laws in connection with the purchase and distribution of the Common Shares by the Underwriters and the clearance of such offering with the NASD; (7) The execution and performance of the Underwriting Agreement and the consummation of the transactions herein contemplated will not conflict with, result in the breach of, or constitute, either by itself or upon notice or the passage of time or both, a default under, any agreement, mortgage, deed of trust, lease, franchise, license, indenture, permit or other instrument to which to our knowledge the Company or any Subsidiary is a party or by which the Company, any Subsidiary or any property of the Company or any Subsidiary may be bound or affected that is material to the Company, or violate any of the provisions of the certificate of incorporation or bylaws of the Company or any Subsidiary or, so far as is known to us, violate any statute, judgment, decree, order, rule or regulation of any court or governmental body having jurisdiction over the Company, any Subsidiary or any property of the Company or any Subsidiary; (8) Neither the Company nor the Subsidiary is in violation of its certificate of incorporation or bylaws, or to the best of our knowledge, in breach of or default with respect to any provision of any agreement, mortgage, deed of trust, lease, franchise, license, indenture, permit or other instrument known to us to which the Company or any Subsidiary is a party or by which it or any of its properties may be bound or affected, except where such default would not materially adversely affect the Company; and, to our knowledge, the Company and each Subsidiary are in compliance with all laws, rules, regulations, judgments, decrees, orders and statutes of any court or jurisdiction to which it is subject, except where noncompliance would not materially adversely affect the Company; (9) To the best of our knowledge, no holders of securities of the Company have rights that have not lapsed or been waived to the registration of shares of Common Stock or other securities, because of the filing of the Registration Statement by the Company or the offering contemplated hereby; 2. 30 (10) (a) The Registration Statement has become effective under the Act, and, to the best of our knowledge, no stop order suspending the effectiveness of the Registration Statement or preventing the use of the Prospectus has been issued and no proceedings for that purpose have been instituted or are pending or contemplated by the Commission; any required filing of the Prospectus and any supplement thereto pursuant to Rule 424(b) of the Rules and Regulations has been made in the manner and within the time period required by such Rule 424(b); (b) The Registration Statement, the Prospectus and each amendment or supplement thereto (except for the financial statements and schedules included therein as to which we express no opinion) comply as to form in all material respects with the requirements of the Act and the Rules and Regulations; (c) To the best of our knowledge, there are no franchises, leases, contracts, agreements or documents of a character required to be disclosed in the Registration Statement or Prospectus or to be filed as exhibits to the Registration Statement that are not disclosed or filed, as required; (d) To the best of our knowledge, there are no legal or governmental actions, suits or proceedings pending or threatened against the Company that are required to be described in the Prospectus that are not described as required; and (e) To the extent statements in the Prospectus or the Registration Statement constitute summaries of statutes, governmental rules or regulations, documents, legal matters, or proceedings, those statements are accurate in all material respects and fairly present the information required to be shown in Form S-1 with respect to such statutes, governmental rules or regulations, documents, legal matters, or proceedings or conclusions of law and the information purported to be included in such descriptions; provided, however, that our opinion as to the foregoing matters in this subparagraph (e) are limited to the Federal laws of the United States and the laws of the State of Delaware; (11) No transfer taxes are required to be paid in connection with the sale and delivery of the Common Shares to the Underwriters hereunder; (12) The Company is not an "investment company" or a company "controlled" by an "investment company" within the meaning of the Investment Company Act of 1940, as amended; and (13) The Common Shares have been duly authorized for listing on the Nasdaq National Market. In addition to the matters set forth above, counsel rendering the foregoing opinion shall also include a statement to the effect that nothing has come to the attention of such counsel that leads them to believe that the Registration Statement (except as to the financial statements and schedules and other financial and statistical data contained therein, as to which such counsel need 3. 31 not express any opinion or belief) at the Effective Date contained any untrue statement of a material fact or omitted to state a material fact required to be stated therein or necessary to make the statements therein not misleading, that the Prospectus (except as to the financial statements and schedules and other financial and statistical data contained therein, as to which such counsel need not express any opinion or belief) as of its date or at the Closing Date (or any later date on which Optional Common Shares are purchased), contained or contains any untrue statement of a material fact or omitted or omits to state a material fact necessary in order to make the statements therein, in light of the circumstances under which they were made, not misleading. 4. 32 EXHIBIT C-2 PATENT COUNSEL OPINION Such counsel are familiar with the technology used by the Company in its business and the manner of its use thereof and have read the Registration Statement and the Prospectus, including particularly the portions of the Registration Statement and the Prospectus referring to patents, trade secrets, trademarks, service marks or other proprietary information or materials and: (i) such counsel have no reason to believe that the Registration Statement or the Prospectus (A) contains any untrue statement of a material fact with respect to patents, trade secrets, trademarks, service marks or other proprietary information or materials owned or used by the Company, or the manner of its use thereof, or any allegation on the part of any person that the Company is infringing any patent rights, trade secrets, trademarks, service marks or other proprietary information or materials of any such person or (B) omits to state any material fact relating to patents, trade secrets, trademarks, service marks or other proprietary information or materials owned or used by the Company, or the manner of its use thereof, or any allegation of which such counsel have knowledge, that is required to be stated in the Registration Statement or the Prospectus or is necessary to make the statements therein not misleading; (ii) to the best of such counsel's knowledge and except as set forth in the Prospectus there are no legal or governmental proceedings pending relating to patent rights, trade secrets, trademarks, service marks or other proprietary information or materials of the Company, and to the best of such counsel's knowledge no such proceedings are threatened or contemplated by governmental authorities or others; (iii) such counsel do not know of any contracts or other documents, relating to governmental regulation affecting the Company or the Company's patents, trade secrets, trademarks, service marks or other proprietary information or materials, of a character required to be filed as an exhibit to the Registration Statement or required to be described in the Registration Statement or the Prospectus that are not filed or described as required; (iv) to the best of such counsel's knowledge, the Company is not infringing or otherwise violating any patents, trade secrets, trademarks, service marks or other proprietary information or materials, of others, and to the best of such counsel's knowledge there are no infringements by others of any of the Company's patents, trade secrets, trademarks, service marks or other proprietary information or materials which in the judgment of such counsel could affect materially the use thereof by the Company; and (v) to the best of such counsel's knowledge, the Company owns or possesses sufficient licenses or other rights to use all patents, trade secrets, trademarks, service marks or other proprietary information or materials necessary to conduct the business now being or proposed to be conducted by the Company as described in the Prospectus. 33 EXHIBIT C-3 REGULATORY COUNSEL OPINION Such counsel is familiar with the business of the Company and has read the Registration Statement and the Prospectus, including particularly the portions of the Registration Statement and the Prospectus referring to the Federal Drug Administration ("FDA") rules and regulations and the Company's compliance therewith and; (i) such counsel has no knowledge that the Registration Statement or the Prospectus (A) contains any untrue statement of a material fact with respect to FDA rules and regulations or the Company's compliance therewith, or (B) omits to state any material fact relating to FDA rules and regulations or the Company's compliance therewith that is required to be stated in the Registration Statement or the Prospectus or is necessary to make the statements therein not misleading; (ii) to the best of such counsel's knowledge there are no legal or governmental proceedings proceedings pending related to the Company and its business, and to the best of such counsel's knowledge no such proceedings are threatened or contemplated by governmental authorities or others; (iii) except as described in the Prospectus, the Company has received all governmental permits, consents, certificates, approvals and authorizations necessary in order to conduct its business as described in the Registration Statement; (iv) such counsel does not know of any contracts or other documents of a character required to be described in the Registration Statement or the Prospectus that are not so described.