XOMA CORPORATION CERTIFICATE OF DESIGNATIONS OF NON-VOTING CUMULATIVE CONVERTIBLE PREFERRED STOCK, SERIES F (Pursuant to Section 151 of the General Corporation Law of the State of Delaware) ------ XOMA Corporation, a Delaware corporation (the "Corporation"), in accordance with the provisions of Section 103 of the General Corporation Law of the State of Delaware DOES HEREBY CERTIFY: That pursuant to authority vested in the Board of Directors of the Corporation (the "Board of Directors" or the "Board") by the Certificate of Incorporation, as amended, of the Corporation, the Board of Directors, at a meeting duly called and held on September 16, 1996, adopted a resolution providing for the creation of a series of the Corporation's Preferred Stock, $.05 par value, which series is designated "Non-Voting Cumulative Convertible Preferred Stock, Series F", which resolution is as follows: RESOLVED, that pursuant to authority vested in the Board of Directors by the Certificate of Incorporation, as amended, the Board of Directors does hereby provide for the creation of a series of the Preferred Stock, $.05 par value (hereafter called the "Preferred Stock"), of the Corporation, and to the extent that the voting powers and the designations, preferences and relative, participating, optional or other special rights thereof and the qualifications, limitations or restrictions of such rights have not been set forth in the Certificate of Incorporation, as amended, of the Corporation, does hereby fix the same as follows: NON-VOTING CUMULATIVE CONVERTIBLE PREFERRED STOCK, SERIES F Section 1. Designation and Amount. The shares of such series shall be designated as "Non-Voting Cumulative Convertible Preferred Stock, Series F" (the "Series F Convertible Preferred Stock"), and the number of shares constituting the Series F Convertible Preferred Stock shall be 1,600. Section 2. Stated Capital. The amount to be represented in stated capital at all times for each share of Series F Convertible Preferred Stock shall be the sum of (i) $10,000, and (ii) to the extent legally available, the accrued but unpaid dividends on such share of Series F Convertible Preferred Stock. Section 3. Rank. All Series F Convertible Preferred Stock shall rank senior to the Common Stock, par value $.0005 per share, of the Corporation, now or hereafter issued, as to payment of dividends and distribution of assets upon liquidation, dissolution, or winding up of the Corporation, whether voluntary or involuntary. Section 4. Dividends and Distributions. (a) The holders of shares of Series F Convertible Preferred Stock shall be entitled to receive, when, as, and if declared by the Board of Directors out of funds legally available for such purpose, dividends at the rate of $500.00 per annum per share, and no more, which shall be fully cumulative, shall accrue on a daily basis without interest from the date of original issuance and shall be payable semiannually on March 31 and September 30 of each year commencing March 31, 1997 (except that if any such date is a Saturday, Sunday, or legal holiday, then such dividend shall be payable on the next succeeding day that is not a Saturday, Sunday, or legal holiday) to holders of record as they appear on the stock books of the Corporation on such record dates, not more than 20 nor less than 10 days preceding the payment dates for such dividends, as shall be fixed by the Board. Dividends on the Series F Convertible Preferred Stock shall be paid in cash or, subject to the limitations in Section 4(b), shares of Common Stock, $.0005 par value, including the related Preferred Stock Purchase Rights (the "Common Stock") of the Corporation or any combination of cash and shares of Common Stock, at the option of the Corporation as hereinafter provided. The amount of the dividends payable per share of Series F Convertible Preferred Stock for each semiannual dividend period shall be computed by dividing the annual dividend amount by two. The amount of dividends payable for the initial dividend period and any period shorter than a full semiannual dividend period shall be computed on the basis of a 365-day year. No dividends or other distributions, other than dividends payable solely in shares of Common Stock or other capital stock of the Corporation ranking junior as to dividends to the Series F Convertible Preferred Stock (collectively, the "Junior Dividend Stock"), shall be declared, paid or set apart for payment on, and, except for the use by optionees of Common Stock to pay for the exercise price of stock options granted pursuant to employee stock option plans of the Corporation and its subsidiaries, no purchase, redemption, or other acquisition shall be made by the Corporation of, any shares of Junior Dividend Stock unless and until all accrued and unpaid dividends on the Series F Convertible Preferred Stock shall have been paid or declared and set apart for payment. If at any time any dividend on any capital stock of the Corporation ranking senior as to dividends to the Series F -2- Convertible Preferred Stock (the "Senior Dividend Stock") shall be in arrears, in whole or in part, no dividend shall be paid or declared and set apart for payment on the Series F Convertible Preferred Stock unless and until all accrued and unpaid dividends have been, or contemporaneously are, paid or declared and set apart for payment on the Senior Dividend Stock for all dividend periods terminating on or prior to the date of payment of such full dividends. No full dividends shall be paid or declared and set apart for payment on any class or series or the Corporation's capital stock ranking, as to dividends, on a parity with the Series F Convertible Preferred Stock (the "Parity Dividend Stock"), for any period unless all accrued and unpaid dividends have been, or contemporaneously are, paid or declared and set apart for payment on the Series F Convertible Preferred Stock for all dividend periods terminating on or prior to the date of payment of such full dividends. No full dividends shall be paid or declared and set apart for payment on the Series F Convertible Preferred Stock for any period unless all accrued and unpaid dividends have been, or contemporaneously are, paid or declared and set apart for payment on the Parity Dividend Stock for all dividend periods terminating on or prior to the date of payment of such full dividends. When dividends are not paid in full upon the Series F Convertible Preferred Stock and the Parity Dividend Stock, all dividends paid or declared and set apart for payment upon shares of Series F Convertible Preferred Stock and the Parity Dividend Stock shall be paid or declared and set apart for payment pro rata, so that the amount of dividends paid or declared and set apart for payment per share on the Series F Convertible Preferred Stock and the Parity Dividend Stock shall in all cases bear to each other the same ratio that accrued and unpaid dividends per share on the shares of Series F Convertible Preferred Stock and the Parity Dividend Stock bear to each other. Any references to "distribution" contained in this Section 4 shall not be deemed to include any stock dividend or distributions made in connection with any liquidation, dissolution, or winding up of the Corporation, whether voluntary or involuntary. (b) If the Corporation elects to issue shares of Common Stock in payment of dividends on the Series F Convertible Preferred Stock, the Corporation shall issue and dispatch, or cause to be issued and dispatched, to each holder of such shares a certificate representing the number of whole shares of Common Stock arrived at by dividing the per share Computed Price (as defined herein) of such shares of Common Stock into the total amount of cash dividends such holder would be entitled to receive if the aggregate dividends on the Series F Convertible Preferred Stock held by such holder which are being paid in shares of Common Stock were being paid in cash; provided, however, that if certificates representing shares of Common Stock are issued and dispatched to holders of Series F Convertible Preferred Stock subsequent to the third trading day -3- after a dividend payment date, the percentage used to calculate the Computed Price will be reduced by one percentage point for each trading day after the third trading day following such dividend payment date to the date of dispatch of shares of Common Stock. No fractional shares of Common Stock shall be issued in payment of dividends. In lieu thereof, the Corporation may issue a number of shares of Common Stock to each holder which reflects a rounding to the nearest whole number of shares of Common Stock or may pay cash. The Corporation shall not exercise its right to issue shares of Common Stock in payment of dividends on Series F Convertible Preferred Stock if: (i) the number of shares of Common Stock at the time authorized, unissued and unreserved for all purposes, or held in the Corporation's treasury, is insufficient to pay the portion of such dividends to be paid in shares of Common Stock; (ii) the issuance or delivery of shares of Common Stock as a dividend payment would require registration with or approval of any governmental authority under any law or regulation, and such registration or approval has not been effected or obtained; (iii) the shares of Common Stock to be issued as a dividend payment have not been authorized for listing, upon official notice of issuance, on any securities exchange or market on which the Common Stock is then listed; or have not been approved for quotation if the Common Stock is traded in the over-the-counter market; (iv) the Computed Price (determined without regard to the proviso to the definition thereof) is less than the par value of the shares of Common Stock; (v) the shares of Common Stock (A) cannot be sold or transferred without restriction by unaffiliated holders who receive such shares of Common Stock as a dividend payment or (B) are no longer listed on a national securities exchange, the Nasdaq National Market or the Nasdaq SmallCap Market; or (vi) the issuance of shares of Common Stock in payment of dividends on Series F Convertible Preferred Stock held by any Restricted Person (as defined in Section 8(a)) would result in such Restricted Person beneficially owning more than such Restricted Person's Restriction Percentage (as defined in Section 8(a)) of the Common Stock, determined as provided in the proviso to the second sentence of Section 8(a). Shares of Common Stock issued in payment of dividends on Series F Convertible Preferred Stock pursuant to this Section shall -4- be, and for all purposes shall be deemed to be, validly issued, fully paid and nonassessable shares of Common Stock of the Corporation; the issuance and delivery thereof is hereby authorized; and the dispatch thereof will be, and for all purposes shall be deemed to be, payment in full of the cumulative dividends to which holders are entitled on the applicable dividend payment date. "Computed Price" of shares of Common Stock means the price equal to 87 percent of the Market Price (as defined in Section 8(b)) of the Common Stock on the applicable dividend payment date; provided however, that, notwithstanding the foregoing, in no event shall the Computed Price be less than $.0005 per share. (c) Notwithstanding any other provision of this Section 4, the Corporation may elect by written notice mailed to the holders of the Series F Convertible Preferred Stock at their addresses appearing on the records of the Corporation not later than the payment date for such dividend not to declare or make payment of the amount of any semiannual dividend to the holders of shares of Series F Convertible Preferred Stock on the date therefor provided in Section 4(a), in which case the accrued and unpaid dividends shall be taken into account at the time of conversion of shares of Series F Convertible Preferred Stock as provided in Section 8 and the Corporation shall have no further right subsequently to pay or declare and set aside for payment such dividends for such dividend payment date unless the Corporation declares and pays dividends in an amount equal to 113 percent of the amount of such dividends not so declared or paid on such payment date and otherwise in accordance with Sections 4(a) and 4(b). Such dividends not so declared shall not bear interest. (d) The Corporation shall not pay, declare or set apart for such payment, any dividend on shares of Common Stock, Junior Dividend Stock or Junior Liquidation Stock (as defined herein) other than (1) dividends on shares of Common Stock solely in the form of additional shares of Common Stock, (2) dividends on Junior Dividend Stock solely in the form of shares of Common Stock or additional shares of Junior Dividend Stock, (3) dividends on Junior Liquidation Stock solely in the form of shares of Common Stock or additional shares of Junior Liquidation Stock or (4) regular quarterly cash dividends, unless contemporaneously therewith, the Corporation shall pay or declare and set apart for payment dividends on the shares of Series F Convertible Preferred Stock in an amount per share of Series F Convertible Preferred Stock equal to the aggregate amount of dividends the holder of such share of Series F Convertible Preferred Stock would otherwise have been entitled to receive had such holder converted such share of Series F Convertible Preferred Stock in accordance with Section 8(a) (but without regard to the limitations on conversion contained in the -5- proviso to the second sentence of Section 8(a) or in Section 8(d)) into shares of Common Stock as if the Conversion Date (as defined herein) were the earlier of (x) the record date for the payment of such dividend on shares of Common Stock, Junior Dividend Stock or Junior Liquidation Stock, as the case may be, and (y) the trading day prior to the date on which ex-dividend trading in the Common Stock, Junior Dividend Stock or Junior Liquidation Stock, as the case may be, begins with respect to such dividend thereon. (e) Neither the Corporation nor any subsidiary of the Corporation shall redeem, repurchase (other than pursuant to a Tender Offer, as defined in Section 4(f), which shall be governed by Section 4(f)) or otherwise acquire in any one transaction or series of related transactions any shares of Common Stock, Junior Dividend Stock or Junior Liquidation Stock if the number of shares so repurchased, redeemed or otherwise acquired in such transaction or series of related transactions is more than either (x) 5.0% of the number of shares of Common Stock, Junior Dividend Stock or Junior Liquidation Stock, as the case may be, outstanding immediately prior to such transaction or series of related transactions or (y) 1% of the number of shares of Common Stock, Junior Dividend Stock or Junior Liquidation Stock, as the case may be, outstanding immediately prior to such transaction or series of related transactions if such transaction or series of related transactions is with any one person or group of affiliated persons, unless the Corporation or such subsidiary offers to purchase from each holder of shares of Series F Convertible Preferred Stock at the time of such redemption, repurchase or acquisition the same percentage of such holder's shares of Series F Convertible Preferred Stock as the percentage of the number of outstanding shares of Common Stock, Junior Dividend Stock or Junior Liquidation Stock, as the case may be, to be so redeemed, repurchased or acquired at a purchase price per share of Series F Convertible Preferred Stock equal to the product obtained by multiplying (1) the number of shares of Common Stock into which such share of Series F Convertible Preferred Stock could be converted in accordance with Section 8(a) (but without regard to the limitations on conversion contained in the proviso to the second sentence of Section 8(a) or in Section 8(d)) on the date of purchase of such share of Series F Convertible Preferred Stock times (2) the Market Price of one share of Common Stock on the date of purchase of such share of Series F Convertible Preferred Stock. (f) Neither the Corporation nor any subsidiary of the Corporation shall (1) make any tender offer or exchange offer (a "Tender Offer") for outstanding shares of Common Stock unless the Corporation contemporaneously therewith makes an offer, or (2) enter into an agreement regarding a Tender Offer for outstanding shares of Common Stock by any person other than the Corporation or any subsidiary of the Corporation unless such person agrees with the Corporation to make an offer, in either such case, to each -6- holder of outstanding shares of Series F Convertible Preferred Stock to purchase the same percentage of shares of Series F Convertible Preferred Stock held by such holder as the percentage of outstanding shares of Common Stock offered to be purchased in such Tender Offer, at a price per share of Series F Convertible Preferred Stock equal to the product obtained by multiplying (1) the number of shares of Common Stock into which such share of Series F Convertible Preferred Stock could be converted in accordance with Section 8(a) (but without regard to the limitations on conversion contained in the proviso to the second sentence of Section 8(a) or in Section 8(d)) on the date of purchase of such share of Series F Convertible Preferred Stock times (2) the cash price (or other consideration) per share of Common Stock offered in such Tender Offer. Section 5. Liquidation Preference. In the event of a liquidation, dissolution, or winding up of the Corporation, whether voluntary or involuntary, the holders of Series F Convertible Preferred Stock shall be entitled to receive out of the assets of the Corporation, whether such assets constitute stated capital or surplus of any nature, an amount per share of Series F Convertible Preferred Stock equal to the sum of (i) all dividends accrued and unpaid thereon to the date of final distribution to such holders, and (ii) $10,000.00 (collectively, "the Liquidation Preference"), and no more, before any payment shall be made or any assets distributed to the holders of Common Stock or any other class or series of the Corporation's capital stock ranking junior as to liquidation rights to the Series F Convertible Preferred Stock (collectively, the "Junior Liquidation Stock"); provided, however, that such rights shall accrue to the holders of Series F Convertible Preferred Stock only in the event that the Corporation's payments with respect to the liquidation preference of the holders of capital stock of the Corporation ranking senior as to liquidation rights to the Series F Convertible Preferred Stock (the "Senior Liquidation Stock") are fully met. After the liquidation preferences of the Senior Liquidation Stock are fully met, the entire assets of the Corporation available for distribution shall be distributed ratably among the holders of the Series F Convertible Preferred Stock and any other class or series of the Corporation's capital stock having parity as to liquidation rights with the Series F Convertible Preferred Stock (the "Parity Liquidation Stock") in proportion to the respective preferential amounts to which each is entitled (but only to the extent of such preferential amounts). After payment in full of the liquidation price of the shares of the Series F Convertible Preferred Stock and the Parity Liquidation Stock, the holders of such shares shall not be entitled to any further participation in any distribution of assets by the Corporation. Neither a consolidation or merger of the Corporation with another corporation nor a sale or transfer of all or part of the Corporation's assets for cash, securities, or -7- other property in and of itself will be considered a liquidation, dissolution, or winding up of the Corporation. Section 6. No Mandatory or Optional Redemption. Except as set forth in Section 8(d), the shares of Series F Convertible Preferred Stock shall not be subject to mandatory redemption by the Corporation or redemption at the option of the Corporation. Section 7. No Sinking Fund. The shares of Series F Convertible Preferred Stock shall not be subject to the operation of a purchase, retirement, or sinking fund. Section 8. Conversion. (a) Conversion at Option of Holder. The holders of the Series F Convertible Preferred Stock may convert their shares of Series F Convertible Preferred Stock into fully paid and nonassessable shares of Common Stock and such other securities and property as hereinafter provided. Commencing at any time on or after the SEC Effective Date (as defined herein) and at any time thereafter to and including the day prior to the Redemption Date (as defined herein) for such share of Series F Convertible Preferred Stock, each share of Series F Convertible Preferred Stock may be converted at the principal executive offices of the Corporation or at such other office or offices, if any, as the Board of Directors may designate, into whole shares of Common Stock at the rate equal to the number of fully paid and nonassessable shares of Common Stock (calculated as to each conversion to the nearest 1/100th of a share) determined by dividing (y) the sum of (i) $10,000 and (ii) the amount of dividends (whether or not earned or declared) accrued on a daily basis on such share of Series F Convertible Preferred Stock to the Conversion Date ("Convertible Dividends") by (z) the product of (I) the Conversion Percentage (as defined herein) on the Conversion Date times (II) the Market Price on the Conversion Date; provided, however, that in no event shall any beneficial owner of shares of Series F Convertible Preferred Stock be entitled to convert any shares of Series F Convertible Preferred Stock in excess of that number of shares of Series F Convertible Preferred Stock upon conversion of which the sum of (1) the number of shares of Common Stock beneficially owned by such beneficial owner and any person whose beneficial ownership of shares of Common Stock would be aggregated with such beneficial owner's beneficial ownership of shares of Common Stock for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), and Regulation 13D-G thereunder (each a "Restricted Person" and collectively, the "Restricted Persons") (other than shares of Common Stock deemed beneficially owned through the ownership of unconverted shares of Series F Convertible Preferred Stock) and (2) the number of shares of Common Stock issuable upon the conversion of the number of shares of Series F Convertible Preferred Stock with respect to which the determination -8- in this proviso is being made, would result in beneficial ownership by such Restricted Person of more than the percentage, if any, of the outstanding shares of Common Stock agreed to in writing with the Corporation by or on behalf of such beneficial owner at or prior to the time such beneficial owner first acquired any shares of Series F Convertible Preferred Stock (the "Restriction Percentage"). For purposes of the proviso to the immediately preceding sentence, beneficial ownership shall be determined in accordance with Section 13(d) of the Exchange Act and Regulation 13D-G thereunder, except as otherwise provided in clause (1) of the proviso to the immediately preceding sentence. (b) Certain Definitions. As used herein, "Conversion Date" shall mean the date on which the notice of conversion referred to in Section 8(c) is actually received by the Corporation (whether by courier, personal delivery or telephone line facsimile transmission); provided, however, that the Conversion Date for any such notice which is so received by the Corporation after 4:00 p.m., New York City time, on any particular day shall be deemed to be the next following trading day. As used herein, "Conversion Percentage" shall mean 87 percent. As used herein, the "Market Price" on any date shall mean (i) if the Common Stock is listed on a national securities exchange, the arithmetic average of the last reported bid prices per share of the Common Stock on the principal securities exchange on which the Common Stock is listed that shall be consolidated for consolidated trading, if applicable to such exchange, for five consecutive trading days of such exchange immediately preceding such date, or (ii) if the Common Stock is not so listed, the arithmetic average of the last reported bid prices per share of the Common Stock as reported on the Nasdaq National Market for the five consecutive Nasdaq trading days immediately preceding such date, or (iii) if the Common Stock is neither so listed nor so reported, the arithmetic average of the last reported bid price per share of the Common Stock as quoted by a registered broker-dealer for the last five days for which such quotes are available immediately prior to such date; provided that such quotes must have been available for at least five days in the preceding thirty-day period, or (iv) if the Common Stock is not so listed, so reported or so quoted, the fair value of the Common Stock on such date, as reasonably determined by the Board of Directors in good faith after taking into account such factors as the Board of Directors may deem appropriate, including one or more professional valuations. As used herein, "Registration Rights Agreement" shall mean collectively the several Registration Rights Agreements -9- entered into between the Corporation and the initial holders of the Series F Convertible Preferred Stock, as amended from time to time in accordance with their terms. As used herein, "Registration Statement" shall mean the Registration Statement required to be filed by the Corporation pursuant to Section 2(a) of the Registration Rights Agreement. As used herein, "SEC" shall mean the United States Securities and Exchange Commission. As used herein, "SEC Effective Date" shall mean, with respect to any share of Series F Convertible Preferred Stock, the date on which the Registration Statement is first declared effective by the SEC. (c) Other Provisions. (1) The holders of shares of Series F Convertible Preferred Stock at the close of business on the record date for any dividend payment to holders of Series F Convertible Preferred Stock shall be entitled to receive the dividend payable on such shares on the corresponding dividend payment date notwithstanding the conversion thereof after such dividend payment record date or the Corporation's default in payment of the dividend due on such dividend payment date; provided, however, that the holder of shares of Series F Convertible Preferred Stock converted during the period between the close of business on any record date for a dividend payment and the opening of business on the corresponding dividend payment date shall pay to the Corporation upon receipt thereof from the Corporation an amount equal to the dividend payable on such shares on such dividend payment date if such dividend is paid to such holder, it being understood that nothing contained in this proviso shall limit the inclusion, without any act on the part of a holder of shares of Series F Convertible Preferred Stock, of Convertible Dividends, upon any conversion pursuant to Section 8(a). A holder of shares of Series F Convertible Preferred Stock on a record date for a dividend payment who (or whose transferee) converts such shares into shares of Common Stock on or after the corresponding dividend payment date will receive the dividend payable by the Corporation on such shares of Series F Convertible Preferred Stock on such date, and the converting holder will not be obligated to the Corporation for payment of the amount of such dividend in connection with such conversion of shares of Series F Convertible Preferred Stock. Except as provided above, no adjustment shall be made in respect of cash dividends on Common Stock that may be accrued and unpaid at the date of surrender for conversion. (2) The right of the holders of Series F Convertible Preferred Stock to convert their shares shall be exercised by delivering to the Corporation or its agent, as provided in Section 8(a) above, a written notice, duly signed by or on behalf of the -10- holder, stating the number of shares of Series F Convertible Preferred Stock to be converted. No fewer than ten shares (or such lesser number of shares, the conversion of which is permitted at that time in accordance with the proviso to the second sentence of Section 8(a) and in accordance with Section 8(d)) of Series F Convertible Preferred Stock, may be converted in any particular conversion, unless the Corporation consents to conversion of a smaller number of shares in any particular instance. The Corporation shall not be required to pay any tax which may be payable in respect of any transfer involved in the issue and delivery upon conversion of shares of Common Stock or other securities or property in a name other than that of the holder of the shares of the Series F Convertible Preferred Stock being converted, and the Corporation shall not be required to issue or deliver any such shares or other securities or property unless and until the person or persons requesting the issuance thereof shall have paid to the Corporation the amount of any such tax or shall have established to the satisfaction of the Corporation that such tax has been paid. The holder of shares of Series F Convertible Preferred Stock being converted shall be responsible for the amount of any withholding tax payable in connection with such conversion. (3) If a holder of Series F Convertible Preferred Stock elects to convert any shares of Series F Convertible Preferred Stock in accordance with Section 8(a), such holder shall not be required to physically surrender the certificate(s) representing such shares of Series F Convertible Preferred Stock to the Corporation unless all of the shares of Series F Convertible Preferred Stock represented thereby are so converted. Each holder of shares of Series F Convertible Preferred Stock and the Corporation shall maintain records showing the number of shares so converted and the dates of such conversions or shall use such other method, satisfactory to such holder and the Corporation, so as to not require physical surrender of such certificates upon each such conversion. In the event of any dispute or discrepancy, such records of the Corporation shall be controlling and determinative in the absence of manifest error. Notwithstanding the foregoing, if any shares of Series F Convertible Preferred Stock evidenced by a particular certificate therefor are converted as aforesaid, the holder of Series F Convertible Preferred Stock may not transfer the certificate(s) representing such shares of Series F Convertible Preferred Stock unless such holder first physically surrenders such certificate(s) to the Corporation, whereupon the Corporation will forthwith issue and deliver upon the order of such holder of shares of Series F Convertible Preferred Stock new certificate(s) of like tenor, registered as such holder of shares of Series F Convertible Preferred Stock (upon payment by such holder of shares of Series F Convertible Preferred Stock of any applicable transfer taxes) may request, representing in the aggregate the remaining number of shares of Series F Convertible Preferred Stock represented by such certificate(s). Each holder of shares of Series F Convertible -11- Preferred Stock, by acceptance of a certificate for such shares, acknowledges and agrees that (1) by reason of the provisions of this paragraph and Section 8(d)(1), following conversion of any shares of Series F Convertible Preferred Stock represented by such certificate, the number of shares of Series F Convertible Preferred Stock represented by such certificate may be less than the number of shares stated on such certificate and the number of shares of Common Stock from the Maximum Share Amount (as defined herein) allocated to the shares of Series F Convertible Preferred Stock represented by such certificate for purposes of conversion of such shares may be less than the number thereof on such certificate and (2) the Corporation may place a legend on the certificates for shares of Series F Convertible Preferred Stock which refers to or describes the provisions of this paragraph and Section 8(d)(1). (4) (A) The Corporation (and any successor corporation) shall take all action necessary so that 6,686,750 shares (such amount to be subject to equitable adjustment from time to time for stock splits, stock dividends, combinations, capital reorganizations and similar events relating to the Common Stock occurring on or after the date hereof and to reduction for shares of Common Stock issued on conversion of shares of Series F Convertible Preferred Stock) of the authorized but unissued Common Stock (or appropriate number of shares of common stock in the case of any successor corporation) are at all times reserved by the Corporation (or any successor corporation), free from preemptive rights, for conversion of the Series F Convertible Preferred Stock outstanding upon the basis hereinbefore provided, subject to the provisions of the next succeeding paragraph. (B) If the Corporation shall have obtained the Stockholder Approval (as defined in Section 8(d)), then thereafter, in addition to the requirements of this paragraph, the Corporation (and any successor corporation) shall take all action necessary so that an additional number of shares of the authorized but unissued Common Stock (or appropriate number of shares of common stock in the case of any successor corporation) sufficient to provide for the conversion of the Series F Convertible Preferred Stock outstanding upon the basis hereinbefore provided are at all times reserved by the Corporation (or any successor corporation), free from preemptive rights, for such conversion, subject to the provisions of the next succeeding paragraph. The sole remedy of any holder for a breach of this clause (B) shall be the right of redemption as and to the extent provided in Section 8(e). (C) If the Corporation shall issue any securities or make any change in its capital structure which would change the number of shares of Common Stock into which each share of the Series F Convertible Preferred Stock shall be convertible as herein provided, the Corporation shall at the same time also make proper provision so that thereafter there shall be a sufficient number of shares of Common Stock authorized and reserved, free from preemptive rights, for conversion of the outstanding Series F Convertible Preferred Stock on the new basis. -12- (5) In case of any consolidation or merger of the Corporation with any other corporation (other than a wholly-owned subsidiary of the Corporation) in which the Corporation is not the surviving corporation, or in case of any sale or transfer of all or substantially all of the assets of the Corporation, or in the case of any share exchange pursuant to which all of the outstanding shares of Common Stock are converted into other securities or property, the Corporation shall make appropriate provision or cause appropriate provision to be made so that each holder of shares of Series F Convertible Preferred Stock then outstanding shall have the right thereafter to convert such shares of Series F Convertible Preferred Stock into the kind and amount of shares of stock and other securities and property receivable upon such consolidation, merger, sale, transfer, or share exchange by a holder of the number of shares of Common Stock into which such shares of Series F Convertible Preferred Stock could have been converted immediately prior to the effective date of such consolidation, merger, sale, transfer, or share exchange. If, in connection with any such consolidation, merger, sale, transfer, or share exchange, each holder of shares of Common Stock is entitled to elect to receive either securities, cash, or other assets upon completion of such transaction, the Corporation shall provide or cause to be provided to each holder of Series F Convertible Preferred Stock the right to elect the securities, cash, or other assets into which the Series F Convertible Preferred Stock held by such holder shall be convertible after completion of any such transaction on the same terms and subject to the same conditions applicable to holders of the Common Stock (including, without limitation, notice of the right to elect, limitations on the period in which such election shall be made, and the effect of failing to exercise the election). The Corporation shall not effect any such transaction unless the provisions of this paragraph have been complied with. The above provisions shall similarly apply to successive consolidations, mergers, sales, transfers, or share exchanges. Whenever the Corporation shall propose to take any of the actions specified in this fifth paragraph of this Section 8(c), the Corporation shall cause a notice to be mailed at least 20 days prior to the date on which the books of the Corporation will close or on which a record will be taken for such action, to the holders of record of the outstanding Series F Convertible Preferred Stock on the date of such notice. Such notice shall specify the action proposed to be taken by the Corporation and the date as of which holders of record of the Common Stock shall participate in any such actions or be entitled to exchange their Common Stock for securities or other property, as the case may be. Failure by the Corporation to mail the notice or any defect in such notice shall not affect the validity of the transaction. (6) Upon receipt by the Corporation from a holder of shares of Series F Convertible Preferred Stock of a telephone line -13- facsimile transmission of a notice of conversion of shares of Series F Convertible Preferred Stock meeting the requirements for conversion as provided in Section 8(a) and this Section 8(c), the Corporation shall issue and deliver or cause to be issued and delivered to such holder certificates for the Common Stock issuable upon such conversion within three business days after such receipt, and the person converting shall be deemed to be the holder of record of the Common Stock issuable upon such conversion, and all rights with respect to the shares of Series F Convertible Preferred Stock being converted shall forthwith terminate except the right to receive the Common Stock or other securities, cash, or other assets as herein provided, on the Conversion Date; provided, however, that the original notice of conversion is received by the Corporation by the next business day following receipt by the Corporation of the telephone line facsimile transmission notice of conversion; provided further, however, that in the event that the original notice of conversion is not received by the Corporation as herein provided, the Corporation shall issue and deliver or cause to be issued and delivered certificates for the Common Stock within two business days of receipt by the Corporation of such original notice of conversion. If the Corporation shall fail to issue and deliver or cause to be issued and delivered the certificates for shares of Common Stock upon any such conversion as required by the foregoing sentence and, as a result of such failure the holder of the shares of Series F Convertible Preferred Stock so converted shall suffer any direct damages or liabilities from such failure (including, without limitation, margin interest and the cost of covering a purchase (whether by such holder or such holder's securities broker) or borrowing of shares of Common Stock by such holder for purposes of settling any trade involving a sale (other than a short sale, as defined in Rule 3b-3 under the Exchange Act, as in effect from time to time) of shares of Common Stock made by the holder converting such shares of Series F Convertible Preferred Stock during the period beginning on the Conversion Date and ending on the date the Corporation delivers or causes to be delivered to such holder the shares of Common Stock issuable upon such conversion), then the Corporation shall upon demand of such holder pay to such holder an amount equal to the actual direct, out-of-pocket damages and liabilities suffered by such holder which the holder documents to the reasonable satisfaction of the Corporation; provided, however, that the Corporation shall not be liable to any such holder to the extent the failure of the Corporation to deliver or cause to be delivered such shares of Common Stock results from fire, flood, storm, earthquake, shipwreck, strike, war, acts of terrorism, crash involving facilities of a common carrier, act of God or any similar event outside the control of the Corporation; provided further, however, that a holder converting shares of Series F Convertible Preferred Stock (1) shall notify the Corporation in writing (or by telephone conversation, confirmed in writing) as promptly as practicable after becoming aware that shares of Common Stock issued on conversion of shares of Series F -14- Convertible Preferred Stock have not been received as provided in the foregoing sentence and (2) upon becoming aware such certificates have not been received as provided in the foregoing sentence, thereafter use commercially reasonable steps to mitigate any damages or liabilities for which the Corporation may be held liable to such holder hereunder; and provided even further, however, that in computing the amount of such actual direct, out-of-pocket damages from covering a purchase of shares of Common Stock, the amount thereof shall be reduced by the Market Value on the date of delivery to such holder of the shares of Common Stock the failure of which to deliver on a timely basis gave rise to liability of the Corporation hereunder. As used herein, the "Market Value" on any date shall mean (i) if the Common Stock is listed on a national securities exchange, the last reported bid price per share of the Common Stock on the principal securities exchange on which the Common Stock is listed that shall be consolidated for consolidated trading, if applicable to such exchange on the date immediately preceding such date of delivery, or (ii) if the Common Stock is not so listed, the last reported bid price per share of the Common Stock as reported on the Nasdaq National Market on the date immediately preceding such date of delivery or (iii) if the Common Stock is neither so listed nor so reported, the last reported bid price per share of the Common Stock as quoted by a registered broker-dealer on the date immediately preceding such date of delivery or for which such quote is available immediately prior to such date; provided that such quotes must have been available for at least five days in the preceding thirty-day period, or (iv) if the Common Stock is not so listed, so reported or so quoted, the fair value of the Common Stock on such date, as reasonably determined by the Board of Directors in good faith after taking into account such factors as the Board of Directors may deem appropriate, including one or more professional valuations. (7) No fractional shares of Common Stock shall be issued upon conversion of Series F Convertible Preferred Stock but, in lieu of any fraction of a share of Common Stock which would otherwise be issuable in respect of the aggregate number of such shares converted at one time by the same holder, the Corporation shall round the number of shares of Common Stock issued on such conversion to the nearest whole share. (d) Limitation on Shares Issuable on Conversion; Stockholder Approval; Mandatory Redemption. (1) Notwithstanding any other provision herein, unless the Stockholder Approval shall have been obtained from the stockholders of the Corporation or waived by the National Association of Securities Dealers, Inc. (the "NASD"), the Corporation shall not be required to issue upon conversion of shares of Series F Convertible Preferred Stock more than 6,686,750 shares (such amount to be subject to equitable adjustment from time to time for stock splits, stock dividends, -15- combinations, capital reorganizations and similar events relating to the Common Stock occurring after the date of filing this Certificate of Designations with the Secretary of State of the State of Delaware) of Common Stock (the "Maximum Share Amount"), less the aggregate number of shares of Common Stock issued by the Corporation pursuant to Section 4 as dividends on the Series F Convertible Preferred Stock, upon conversion of shares of Series F Convertible Preferred Stock. The foregoing amount of 6,686,750 (as so adjusted from time to time) shall be allocated among the shares of Series F Convertible Preferred Stock at the time of initial issuance thereof pro rata based on the total number of authorized shares of Series F Convertible Preferred Stock provided in Section 1. Each certificate for shares of Series F Convertible Preferred Stock initially issued shall bear a notation as to the number of shares constituting the portion of the Maximum Share Amount allocated to the shares of Series F Convertible Preferred Stock represented by such certificate for purposes of conversion thereof. The Corporation shall maintain records which show the number of shares of Common Stock issued by the Corporation pursuant to Section 4 as dividends on the shares of Series F Convertible Preferred Stock represented by each certificate, which records shall be controlling in the absence of manifest error. Upon surrender of any certificate for shares of Series F Convertible Preferred Stock for transfer or re-registration thereof (or, at the option of the holder, for conversion of less than all of the shares of Series F Convertible Preferred Stock represented thereby), the Corporation shall make a notation on the new certificate issued upon such transfer or re-registration or evidencing such unconverted shares, as the case may be, as to the remaining number of shares of Common Stock from the Maximum Share Amount remaining available for conversion of the shares of Series F Convertible Preferred Stock evidenced by such new certificate (including, without limitation, by taking into account the number of shares of Common Stock issued by the Corporation pursuant to Section 4 as a dividend on the shares of Series F Convertible Preferred Stock represented by the certificate so surrendered and not previously reflected on the certificate so surrendered, as shown on the records maintained by the Corporation). If any certificate for shares of Series F Convertible Preferred Stock is surrendered for split-up into two or more certificates representing an aggregate number of shares of Series F Convertible Preferred Stock equal to the number of shares of Series F Convertible Preferred Stock represented by the certificate so surrendered (as reduced by any contemporaneous conversion of shares of Series F Convertible Preferred Stock represented by the certificate so surrendered), each certificate issued on such split-up shall bear a notation of the portion of the Maximum Share Amount allocated thereto determined by pro rata allocation from among the remaining portion of the Maximum Share Amount allocated to the certificate so surrendered. If any shares of Series F Convertible Preferred Stock represented by a single certificate are converted in full, all of -16- the portion of the Maximum Share Amount allocated to such shares of Series F Convertible Preferred Stock which remains unissued after such conversion shall be re-allocated pro rata to the outstanding shares of Series F Convertible Preferred Stock held of record by the holder of record at the close of business on the date of such conversion of the shares of Series F Convertible Preferred Stock so converted, and if there shall be no other shares of Series F Convertible Preferred Stock held of record by such holder at the close of business on such date, then such portion of the Maximum Share Amount shall be allocated pro rata among the shares of Series F Convertible Preferred Stock outstanding on such date. (2) The Corporation shall promptly, but in no event later than five business days after the occurrence, give notice to each holder (by telephone line facsimile transmission at such number as such holder has specified in writing to the Corporation for such purposes or, if such holder shall not have specified any such number, by overnight courier or first class mail, postage prepaid, at such holder's address as the same appears on the stock books of the Corporation) and any holder may at any time after the occurrence give notice to the Corporation, in either case, if on any five trading days within any period of ten consecutive trading days the Corporation would not have been required to convert shares of Series F Convertible Preferred Stock of such holder as a consequence of the limitations set forth in Section 8(d)(1) had all outstanding shares of Series F Convertible Preferred Stock been converted into Common Stock on each such day, determined without regard to the limitation, if any, on such holder contained in the proviso to the second sentence of Section 8(a) (any such notice, whether given by the Corporation or a holder, an "Inconvertibility Notice"). If the Corporation shall have given or been required to give any Inconvertibility Notice, or if a holder shall have given any Inconvertibility Notice, then within ten business days after such Inconvertibility Notice is given or was required to be given, the holder receiving or giving, as the case may be, the Inconvertibility Notice shall have the right by written notice to the Corporation (which written notice may be contained in the Inconvertibility Notice given by the holder) to direct the Corporation either (i) to convene a meeting of the holders of Common Stock or to seek written consents of stockholders in lieu of a meeting as promptly as practicable and use its reasonable best efforts to obtain the Stockholder Approval, or (ii) to redeem the portion of such holder's outstanding shares of Series F Convertible Preferred Stock (which, if applicable, shall be all of such holder's outstanding shares of Series F Convertible Preferred Stock) as shall not, on the business day prior to the date of such redemption, be convertible into shares of Common Stock by reason of the limitations set forth in Section 8(d)(1) (determined without regard to the limitation, if any, on such holder contained in the proviso to the second sentence of Section 8(a)), within five business days after such holder so directs the Corporation, at a -17- price per share equal to the Redemption Price (as defined herein). If a holder so directs the Corporation to convene a meeting of the stockholders or to seek written consents in lieu thereof to obtain the Stockholder Approval, the Corporation shall have the right, in lieu of convening such meeting or seeking such consents, to give a notice of redemption within ten business days after such holder so directs the Corporation to obtain the Stockholder Approval, and thereafter shall be obligated to redeem in accordance with such notice of redemption and this Section 8(d) the portion of such holder's outstanding shares of Series F Convertible Preferred Stock (which, if applicable, shall be all of such holder's outstanding shares of Series F Convertible Preferred Stock) as shall not, on the business day prior to the date of giving notice of such redemption, be convertible into shares of Common Stock by reason of the limitations set forth in Section 8(d)(1) (determined without regard to the limitation, if any, on such holder contained in the proviso to the second sentence of Section 8(a)), at a price per share equal to the Redemption Price. If a holder directs the Corporation to convene a meeting of the stockholders or to seek written consents in lieu thereof to obtain the Stockholder Approval and, prior to the mailing by the Corporation to its stockholders of proxy materials for such meeting (or written consents for stockholder action in lieu of such meeting) (x) the Corporation would have been able, within the limitations set forth in Section 8(d)(1), to convert all of such holder's outstanding shares of Series F Convertible Preferred Stock on any three trading days within any period of five consecutive trading days commencing after the period of ten consecutive trading days which gave rise to the applicable Inconvertibility Notice from the Corporation or a holder of shares of Series F Convertible Preferred Stock, as the case may be, had all outstanding shares of Series F Convertible Preferred Stock been surrendered for conversion into Common Stock on each such day (determined without regard to the limitation, if any, on such holder contained in the proviso to the second sentence of Section 8(a)) or (y) the Corporation shall have redeemed the outstanding shares of Series F Convertible Preferred Stock of such holder which shall not, on the business day prior to the date of giving notice of such redemption, be convertible into shares of Common Stock by reason of the limitations set forth in Section 8(d)(1) in accordance with this Section 8(d) (determined without regard to the limitation, if any, on such holder contained in the proviso to the second sentence of Section 8(a)), at a price per share equal to the Redemption Price, then in either such case the Corporation shall have the right to abandon its efforts to seek the Stockholder Approval in respect of such holder. If a holder directs the Corporation to redeem outstanding shares of Series F Convertible Preferred Stock and, prior to the expiration of the five business day period referred to in clause (ii) of the second sentence of this paragraph with respect thereto, the Corporation would have been able, within the limitations set forth in Section 8(d)(1), to convert all of such holder's outstanding shares of -18- Series F Convertible Preferred Stock (determined without regard to the limitation, if any, on such holder contained in the proviso to the second sentence of Section 8(a)) on any three trading days within any period of five consecutive trading days commencing after the period of ten consecutive trading days which gave rise to the applicable Inconvertibility Notice from the Corporation or such holder of shares of Series F Convertible Preferred Stock, as the case may be, had all of such holder's outstanding shares of Series F Convertible Preferred Stock been surrendered for conversion into Common Stock on each of such three trading days within such five trading day period, then the Corporation shall not be required to redeem any shares of Series F Convertible Preferred Stock by reason of such Inconvertibility Notice. In the event the Stockholder Approval in respect of a holder contemplated in clause (i) of the second sentence of this paragraph is sought but is not obtained at such meeting or any adjournment thereof (or through solicitation of written consents), the Corporation shall thereafter promptly (but in no event more than five business days thereafter) redeem such portion (which, if applicable, shall be all of such holder's outstanding shares of Series F Convertible Preferred Stock) of such holder's outstanding shares of Series F Convertible Preferred Stock as shall not, on the business day prior to the date of giving notice of such redemption, be convertible into shares of Common Stock by reason of the limitations set forth in Section 8(d)(1) (determined without regard to the limitation, if any, on such holder contained in the proviso to the second sentence of Section 8(a)), at a price per share equal to the Redemption Price. (3) Notwithstanding the giving of any notice by the Corporation to the holders of Series F Convertible Preferred Stock pursuant to Section 8(d)(2) or the giving or the absence of any notice by the holders of the Series F Convertible Preferred Stock in response thereto or any redemption of shares of Series F Convertible Preferred Stock pursuant to Section 8(d)(2) or any abandonment of the Corporation's efforts to seek the Stockholder Approval pursuant thereto, thereafter the provisions of Section 8(d)(2) shall continue to be applicable on any occasion unless the Stockholder Approval shall have been obtained from the stockholders of the Corporation or waived by the NASD. (4) Any notice of redemption required to be given by the Corporation (a "Notice of Redemption") under this Section 8(d) shall be delivered to the holder of the shares of Series F Convertible Preferred Stock entitled to such notice at their addresses appearing on the records of the Corporation; provided, however, that any failure or defect in the giving of notice to any such holder shall not affect the obligation of the Corporation to redeem shares of the Series F Convertible Preferred Stock. Any Notice of Redemption shall state (1) that the Corporation is redeeming all or a portion of such holder's outstanding shares of Series F Convertible Preferred Stock pursuant to this Section 8(d), -19- (2) the number of shares of Series F Convertible Preferred Stock held by such holder which are to be redeemed, (3) the Redemption Price per share of Series F Convertible Preferred Stock to be redeemed, determined in accordance with this Section, and (4) the Redemption Date of such shares of Series F Convertible Preferred Stock, determined in accordance with this Section 8(d). As used herein, the term "Redemption Date" means the date on which the Corporation is required to redeem shares of Series F Convertible Preferred Stock as provided in this Section 8(d). On the Redemption Date, the Corporation shall make payment in immediately available funds of the applicable Redemption Price to such holder of shares of Series F Convertible Preferred Stock to be redeemed to or upon the order of such holder as specified by such holder in writing to the Corporation at least one business day prior to the Redemption Date. If the Corporation is required to redeem all or any portion of a holder's outstanding shares of Series F Convertible Preferred Stock pursuant to this Section 8(d), the Corporation shall make payment to such holder of the shares of Series F Convertible Preferred Stock to be redeemed in respect of each share of Series F Convertible Preferred Stock to be redeemed of an amount equal to the sum of (A) $11,300.00 and (B) all dividends accrued and unpaid thereon to the applicable Redemption Date (such sum being referred to herein as the "Redemption Price"). Upon redemption of less than all of the shares of Series F Convertible Preferred Stock evidenced by a particular certificate, promptly, but in no event later than three business days after surrender of such certificate to the Corporation, the Corporation shall issue a replacement certificate for the shares of Series F Convertible Preferred Stock evidenced by such certificate which have not been redeemed. Only whole shares of Series F Convertible Preferred Stock may be redeemed. (5) As used in this Section 8(d), "Stockholder Approval" means the approval by a majority of the votes cast by the holders of shares of Common Stock (in person or by proxy) at a meeting of the stockholders of the Corporation (duly convened at which a quorum was present), or a written consent of holders of shares of Common Stock entitled to such number of votes given without a meeting, of the issuance by the Corporation of 20% or more of the outstanding Common Stock of the Corporation for less than the greater of the book or market value of such Common Stock on conversion of the Series F Convertible Preferred Stock, as and to the extent required under Section 4460(i)(1)(D) of the rules of the NASD (or any successor or replacement provision thereof). (e) Redemption at Option of Holders. (i) Each holder of shares of Series F Convertible Preferred Stock who at the time is entitled to the benefits of the Registration Statement shall be entitled, at such holder's option, by notice to the Corporation given within 20 days after the occurrence of an Optional Redemption Event, to require the Corporation to redeem all or a portion of -20- such shares (but in no event less than ten shares, unless such holder holds less than ten shares, in which case such holder must redeem all of such holder's shares) upon the occurrence of an Optional Redemption Event. An Optional Redemption Event means any one of the following events: (A) If, at any time after the Corporation has obtained Stockholder Approval as contemplated in Section 8(d) of this Certificate of Designations, the number of authorized but unissued shares of the Corporation's Common Stock shall not be sufficient to effect the conversion in full of all outstanding shares of Series F Convertible Preferred Stock otherwise convertible in accordance with this Certificate of Designations; (B) For any period of five consecutive trading days following the SEC Effective Date there shall be no closing bid price of the Common Stock on any national securities exchange or the Nasdaq National Market; (C) The Common Stock ceases to be listed for trading on any national securities exchange or the Nasdaq National Market for ten consecutive days; or (D) The inability for 30 or more consecutive days of any holder of shares of Series F Convertible Preferred Stock who is entitled to optional redemption rights under this Section 8(e) to sell such shares of Common Stock issued or issuable on conversion of shares of Series F Convertible Preferred Stock pursuant to the Registration Statement by reason of the occurrence of a Black-Out Day (as defined in Section 8(f)) on each day in such 30-day period. (ii) To exercise the optional redemption right, a holder of Series F Convertible Preferred Stock shall deliver to the Corporation a notice of redemption (an "Optional Redemption Notice"), accompanied by the certificate for the shares of Series F Convertible Preferred Stock to be redeemed. Any Optional Redemption Notice shall state (1) that the holder delivering such notice is thereby requiring the Corporation to redeem shares of Series F Convertible Preferred Stock pursuant to this Section 8(e), (2) the Optional Redemption Event giving rise to such redemption, and (3) the number of shares of Series F Convertible Preferred Stock held by such holder which are to be redeemed. In no event later than five business days following receipt of such notice by the Corporation, the Corporation shall make payment in immediately available funds of the applicable Redemption Price with respect to the shares of Series F Convertible Preferred Stock to be redeemed to or upon the order of such holder as specified by such holder in -21- the Optional Redemption Notice. Upon redemption of less than all of the shares of Series F Convertible Preferred Stock evidenced by a particular certificate, promptly, but in no event later than five business days after surrender of such certificate to the Corporation, the Corporation shall issue a replacement certificate for the shares of Series F Convertible Preferred Stock which have not been redeemed. Only whole shares of Series F Convertible Preferred Stock may be redeemed. (f) Conversion at Option of Corporation. So long as the Corporation shall be in compliance in all material respects with its obligations to the holders of the Series F Convertible Preferred Stock (including its obligations under the Registration Rights Agreement and the provisions of this Certificate of Designations) and so long as the Registration Statement shall be effective (in the case of application of this Section 8(f) to any period during which the Registration Statement is required to be kept effective as provided in Section 3(a) of the Registration Rights Agreement), the Corporation shall have the right, exercisable at any time or from time to time on or after the date which is 365 days after the SEC Effective Date (the "Corporation Conversion Commencement Date"), adjusted as described in the proviso below, by notice (a "Corporation Conversion Notice") to the holders of the Series F Convertible Preferred Stock to require the holders of the Series F Convertible Preferred Stock to convert, in accordance with the provisions, and subject to the limitations, of this Section 8, all or any part of the outstanding shares of Series F Convertible Preferred Stock into shares of Common Stock effective as of the date the Corporation Conversion Notice is given to the extent the same are on such date convertible into shares of Common Stock; provided, however, that the Corporation Conversion Commencement Date shall be extended by such number of days as shall correspond to the number of Black-Out Days (as defined herein) occurring prior to the otherwise applicable Corporation Conversion Commencement Date. As used herein, the term "Black-Out Days" means such period of time commencing from a holder's receipt of notice from the Corporation of the happening of any event of the kind described in Sections 3(e) and 3(f) of the Registration Rights Agreement until the date of receipt by such holder of the amendment or supplement to the Prospectus referred to in Section 3(e) therein or notification of lifting of a stop order or re-effectiveness, as the case may be. The Corporation Conversion Notice shall state (1) the number of shares of Series F Convertible Preferred Stock which the Corporation seeks to require to be converted into shares of Common Stock and (2) the conversion date (which shall be the date the Corporation Conversion Notice is given). If the Corporation shall give a Corporation Conversion Notice, then, unless theretofore converted by the holder in accordance herewith, and, so long as the Registration Statement shall remain effective on the date such Corporation Conversion Notice is given (in the case of application of this Section 8(f) to any period during which the -22- Registration Statement is required to be kept effective as provided in Section 3(a) of the Registration Rights Agreement) and the Corporation shall be in compliance in all material respects with its obligations under the Registration Rights Agreement on the date such Corporation Conversion Notice is given, on the conversion date properly set forth therein, the lesser of (A) the number of shares of Series F Convertible Preferred Stock which the Corporation seeks to require to be converted, as set forth in such Corporation Conversion Notice or (B) the maximum number of shares of Series F Convertible Preferred Stock which on such conversion date is convertible in accordance with Sections 8(a) and 8(d), shall be converted into such number of shares of Common Stock as shall be determined pursuant to this Section 8 as if the conversion of such number of shares of Series F Convertible Preferred Stock were made by the holders thereof in accordance herewith without any further action on the part of the holders of such shares of Series F Convertible Preferred Stock. Upon receipt by the Corporation of certificates for shares of Series F Convertible Preferred Stock converted into shares of Common Stock in accordance with this Section 8(e) after a Corporation Conversion Notice is given, the Corporation shall issue and, within three trading days after such surrender, deliver to or upon the order of such holder (1) that number of shares of Common Stock for the number of shares of Series F Convertible Preferred Stock converted as shall be determined in accordance herewith, (2) a new certificate for the balance of shares of Series F Convertible Preferred Stock, if any, and (3) payment of the accrued and unpaid dividends on the shares of Series F Convertible Preferred Stock so converted (which payment of dividends may be made in accordance with Section 4 if the Corporation satisfies the requirements thereof). In connection with any conversion at the option of the Corporation, the Corporation agrees to indemnify the holders of Series F Convertible Preferred Stock to the same extent set forth in Section 8(c)(6) of this Certificate of Designations with respect to any failure to timely deliver certificates representing the Common Stock issuable upon such conversion in accordance herewith. Section 9. Voting Rights. Except as provided below and as otherwise required by law, shares of Series F Convertible Preferred Stock shall not be entitled to vote on any matter. The affirmative vote or consent of the holders of a majority of the outstanding shares of the Series F Convertible Preferred Stock, voting separately as a class, will be required for any amendment, alteration, or repeal, whether by merger or consolidation or otherwise, of the Corporation's Certificate of Incorporation if the amendment, alteration, or repeal adversely affects the powers, preferences, or special rights of the Series F Convertible Preferred Stock; provided, however, that any increase in the authorized preferred stock of the Corporation or the creation and issuance of any stock which is both Junior Dividend -23- Stock and Junior Liquidation Stock or any other capital stock of the Corporation ranking on a parity with the Series F Convertible Preferred Stock as to entitlement to dividends and as to preference on liquidation shall not be deemed to affect adversely such powers, preferences, or special rights. Section 10. Outstanding Shares. For purposes of this Certificate of Designations, all shares of Series F Convertible Preferred Stock shall be deemed outstanding except (i) from the date of conversion of shares of Series F Convertible Preferred Stock into Common Stock, all shares of Series F Convertible Preferred Stock converted into Common Stock; and (ii) from the date of registration of transfer, all shares of Series F Convertible Preferred Stock held of record by the Corporation or any subsidiary or Affiliate (as defined herein) of the Corporation. For the purposes of this Certificate of Designations, "Affiliate" means any person, other than an initial holder of shares of Series F Convertible Preferred Stock, directly or indirectly controlling or controlled by or under direct or indirect common control with the Corporation. "Control" is the power to direct the management and policies of a person, directly or through one or more intermediaries, whether through the ownership of voting securities, by contract, or otherwise. Section 11. Restriction on Transfer of Shares. No holder of shares of Series F Convertible Preferred Stock shall sell or otherwise transfer any shares of Series F Convertible Preferred Stock except to a person who is a Permitted Transferee. A "Permitted Transferee" means a person which (a) (1) is an "accredited investor" (as defined in Regulation D under the Securities Act of 1933, as amended (the "Securities Act")), (2) acquires at least 200 shares of Series F Convertible Preferred Stock from a holder of Series F Convertible Preferred Stock (or such lesser number of shares as shall be held by such holder at the time of such sale or transfer) and (3) acquires the shares of Series F Convertible Preferred Stock in a transaction exempt from registration under the Securities Act and in accordance with any agreement between the Corporation and the holder making such sale or other transfer of shares of Series F Convertible Preferred Stock or (b) in the case of any holder which agreed with the Corporation to purchase at least 1,000 shares of Series F Convertible Preferred Stock from the Corporation in connection with the initial issuance of shares of Series F Convertible Preferred Stock, is any one of up to 5 entities of which 70% or more of the beneficial ownership of such entity is beneficially owned by the beneficial owners of such holder and which entity would, immediately after such transfer hold at least 50 shares (or such lesser number of shares as at the time of such transfer are held by the transferring holder) of Series F Convertible Preferred Stock, in either the case of clause (a) or (b), subject to the consent of the Corporation, such consent not to be unreasonably withheld (it being understood that a proposed -24- assignment by the Buyer to a competitor or potential competitor of the Corporation or a person which the Corporation determines in good faith is accumulating or is likely to accumulate ownership of shares of Common Stock for hostile or unfriendly purposes or proposes to acquire Shares for a purpose adverse to the interests of the Corporation or it stockholders may constitute a basis for withholding such consent). -25- IN WITNESS WHEREOF, XOMA Corporation has caused its corporate seal to be hereunto affixed and this certificate to be signed by Christopher J. Margolin, its Vice President, General Counsel and Secretary, as of the 24th day of September, 1996. XOMA CORPORATION By______________________________ -26-