WHEREVER CONFIDENTIAL INFORMATION IS OMITTED HEREIN (SUCH OMISSIONS ARE DENOTED BY AN ASTERISK), SUCH CONFIDENTIAL INFORMATION HAS BEEN SUBMITTED SEPARATELY TO THE SECURITIES AND EXCHANGE COMMISSION PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT COLLABORATION AGREEMENT GENENTECH, INC. AND XOMA CORPORATION COLLABORATION AGREEMENT THIS COLLABORATION AGREEMENT is made effective as of the 22nd day of April, 1996 (the "Effective Date") by and between Xoma Corporation, a Delaware corporation having its principal place of business at 2910 7th Street, Berkeley, California 94710 ("Xoma") and GENENTECH, INC., a Delaware corporation having its principal place of business at 460 Point San Bruno Boulevard, South San Francisco, California 94080 ("Genentech"), each on behalf of itself and its Affiliates. Xoma and Genentech are sometimes referred to herein individually as a "Party" and collectively as the "Parties," and references to "Xoma" and "Genentech" shall include their respective Affiliates. RECITALS 1. Genentech has licensed a monoclonal antibody (known as MHM-24) to the CD11a cell adhesion molecule on the surface of leucocytes under the terms of an Evaluation and License Agreement dated July 1, 1991 among Genentech, The Chancellor Masters and Scholars of the University of Oxford, Andrew J. McMichael and James E.K. Hildreth (the "Oxford Agreement"). Genentech has humanized such antibody and begun its preclinical development including the development of a pilot process for producing the antibody. 2. Genentech and Xoma wish to continue development of and eventually market such antibody in a collaborative fashion so that the resources and expertise of each is put to good use. 3. Genentech wishes to grant to Xoma a sublicense under the Oxford Agreement to permit Xoma to participate in such collaborative effort. 4. Simultaneously with the execution of this Agreement, Genentech will purchase shares of Common Stock of Xoma for an aggregate purchase price of $ * according to the terms and conditions of a Common Stock and Convertible Note Purchase Agreement (the "Stock Purchase Agreement") of even date herewith. Genentech will also loan Xoma funds in an initial amount of $5,000,000 according to the terms and conditions of a Convertible Subordinated Note Agreement (the "Note Purchase Agreement") of even date herewith. ARTICLE 1. DEFINITIONS The following terms shall have the following meanings as used in this Agreement: 1.1 "Administration Costs" shall have the meaning defined in Exhibit A. 1.2 "Affiliate" means an entity that, directly or indirectly, through one or more intermediaries, is controlled by Xoma or Genentech. As used herein, the term "control" will mean the direct or indirect ownership of fifty percent (50%) or more of the stock having the -2- right to vote for directors thereof or the ability to otherwise control the management of the corporation or other business entity. 1.3 "Allocable Overhead" shall have the meaning defined in Exhibit A. 1.4 "Anti-CD11a" means that certain monoclonal antibody, which recognizes the CD11a cell adhesion molecule on leucocytes, more particularly described on Exhibit B attached hereto. 1.5 "Control" means possession of the ability to grant a license or sublicense as provided for herein without violating the terms of any agreement or other arrangement with any Third Party. 1.6 "Combination Product Adjustment" means the following: in the event a Licensed Product is sold in the form of a combination product containing one or more active ingredients in addition to a Licensed Product, Royalty-Bearing Sales or Net Sales for such combination product will be adjusted by multiplying actual Royalty-Bearing Sales, or Net Sales as applicable, of such combination product by the fraction A/(A + B) where A is the invoice price of the Licensed Product, if sold separately, and B is the invoice price of any other active component or components in the combination, if sold separately. If, on a country-by-country basis, the other active component or components in the combination are not sold separately in said country, Royalty-Bearing Sales or Net Sales shall be calculated by multiplying actual Royalty-Bearing Sales or Net Sales of such combination product by the fraction A/C where A is the invoice price of the Product if sold separately, and C is the invoice price of the combination product. If, on a country-by-country basis, neither the Product nor the other active component or components of the combination product is sold separately in said country, Royalty- Bearing Sales or Net Sales shall be determined by the Parties in good faith. 1.7 "Competing Product" shall mean any monoclonal antibody whose mechanism of action is initiated by interaction with the CD11a determinant on leucocytes developed or acquired by either Party. 1.8 "Co-Promote" means to promote jointly Licensed Products through Genentech, Xoma and their respective sales forces under a single trademark in the Co-Promotion Territory. 1.9 "Co-Promotion Profits" shall have the same meaning as "Operating Profits and Losses" as defined in Exhibit A. 1.10 "Co-Promotion Territory" means the * . 1.11 "Cost of Goods Sold" in the Co-Promotion Territory shall have the meaning defined in Exhibit A. 1.12 "Development Costs" shall have the meaning defined in Exhibit A. -3- 1.13 "Development Plan" means the comprehensive plan for the development of Anti- CD11a, designed to generate the preclinical, process development/manufacturing scale-up, clinical and regulatory information required for filing Drug Approval Applications in the Co- Promotion Territory, and is attached hereto as Exhibit C but will be modified at least annually by the Project Core Team. Development shall refer to all activities related to preclinical testing, toxicology, formulation, process development, manufacturing scale-up, quality assurance/quality control, clinical studies and regulatory affairs for a Licensed Product in connection with obtaining Regulatory Approvals of such Products. 1.14 "Distribution Costs" shall have the meaning defined in Exhibit A. 1.15 "Drug Approval Application" means an application for Regulatory Approval required for commercial sale or use of a Licensed Product as a drug in the Field in a regulatory jurisdiction. 1.16 "Field" means * . 1.17 "Genentech Know-how" means Information which (i) Genentech discloses to Xoma under this Agreement and (ii) is within the Control of Genentech. 1.18 "Genentech Patent" means the rights granted by any governmental authority under a Patent which covers a method, apparatus, material, manufacture, use, treatment, process, compound, composition, or product-by-process necessary to make, use or sell a Licensed Product in the Field, which Patent is owned or Controlled by Genentech, including its interest in any Patents owned jointly by the Parties as provided hereunder. 1.19 "Genentech Territory" means * . 1.20 "Gross Sales" shall have the meaning defined in Exhibit A. 1.21 "Information" means techniques and data relating to the Licensed Products, including, but not limited to, biological materials, inventions, practices, methods, knowledge, knowhow, skill, experience, test data including pharmacological, toxicological and clinical test data, analytical and quality control data, marketing, pricing, distribution, cost, sales, manufacturing, patent data or descriptions. 1.22 "Initial Indications" means the indications for Licensed Products set forth in Section 2.1. 1.23 "Licensed Product" means a formulation for use in the Field containing Anti- CD11a or any molecule derived from Anti-CD11a that is substituted by the Steering Committee as the subject of this collaboration, except as otherwise set forth in Section 2.2. 1.24 "Marketing Costs" shall have the meaning defined in Exhibit A. -4- 1.25 "Net Sales" shall have the meaning defined in Exhibit A. 1.26 "Operating Profits or Losses" shall have the meaning defined in Exhibit A. 1.27 "Patent" means (i) valid and enforceable letters patent, including any extension, registration, confirmation, reissue, continuation, division, continuation-in-part, re-examination or renewal thereof and (ii) pending applications for letters patent. 1.28 "Patent Costs" shall have the meaning defined in Exhibit A. 1.29 "Phase II Clinical Trial" means such studies in humans of the safety, dose ranging and efficacy of a Licensed Product which have generated sufficient data to commence Phase III Clinical Trials. 1.30 "Phase III Clinical Trial" means a controlled study in humans of the efficacy and safety of a Licensed Product which is prospectively designed to demonstrate statistically whether the Licensed Product is effective for use in a particular indication in a manner sufficient to obtain regulatory approval to market that Licensed Product and which the Project Core Team designates as a Phase III Clinical Trial. 1.31 "Project Core Team" means that body established pursuant to Section 3.2 below. 1.32 "Regulatory Approval" means any approvals (including pricing and reimbursement approvals), licenses, registrations or authorizations of any federal, state or local regulatory agency, department, bureau or other governmental entity, necessary for the manufacture and sale of Products in a regulatory jurisdiction. 1.33 "Royalty-Bearing Sales" means the gross amount invoiced by Genentech or its permitted sublicensees for sales to an unrelated Third Party of a Licensed Product in the Genentech Territory, less (i) trade, cash and quantity discounts or rebates, (ii) credits or allowances given or made for rejection or return of, and for uncollectible amounts on, previously sold products or for retroactive price reductions (including rebates similar to Medicare), (iii) taxes, duties or other governmental charges levied on or measured by the billing amount, as adjusted for rebates and refunds, (iv) charges for freight and insurance directly related to the distribution of Licensed Products (to the extent not paid by the Third Party customer), and (v) credits or allowances given or made for wastage replacement, indigent patient and similar programs, to the extent actually deducted from the gross amount invoiced. Such amount shall then be adjusted by the Combination Product Adjustment, if applicable. 1.34 "Sales Costs" shall have the meaning defined in Exhibit A. 1.35 "Sales Representative" means an employee of either Party or its Affiliates (i) who is responsible for contacting customers and others who can buy or influence the buying decision on the applicable Licensed Product in the applicable country in the Co-Promotion Territory, and -5- (ii) whose success at such activities is a significant factor in the ongoing employment of the individual, and shall exclude an employee of either Party or an Affiliate engaged in telemarketing, professional education, and similar indirect activities in support of direct selling. 1.36 "Steering Committee" means that committee established pursuant to Section 3.1 below. 1.37 "Third Party" means any entity other than Xoma or Genentech. 1.38 "Third Party Royalties" means royalties payable to a Third Party in connection with Licensed Products. 1.39 "Xoma Know-how" means Information which (i) Xoma discloses to Genentech under this Agreement and (ii) is within the Control of Xoma. 1.40 "Xoma Patent" means the rights granted by any governmental authority under a Patent which covers a method, apparatus, material, manufacture, use, treatment, process, compound, composition or product-by-process necessary to make, use or sell a Licensed Product in the Field, which Patent is owned or Controlled by Xoma, including its interest in any Patents owned jointly by the Parties as provided hereunder. ARTICLE 2. SCOPE OF COLLABORATION 2.1 Initial Indications. The Parties will focus their initial efforts on the development of Licensed Products to treat psoriasis and prevent or decrease the rejection of organ transplants. 2.2 Option to Include Competing Products. Neither Party shall , alone or with any Third Party, conduct any human clinical trial of any Competing Product without first giving the other Party (the "Electing Party") advance written notice. The Electing Party shall have 120 days from the date the first Party delivers such notice to elect to include such Competing Product as a Licensed Product. The terms and conditions governing the development and commercialization of Competing Products shall be similar to the terms and conditions set forth in this Agreement for the development and commercialization of Anti-CD11a, taking into account the relative commercial value of the Competing Product compared to Anti-CD11a. If the Electing Party does not notify the first Party of its election to so include a Competing Product within such 120-day period, the first Party shall be free to proceed with the development and commercialization of such Competing Product without any obligation to the Electing Party. 2.3 Development Costs. (a) Xoma shall bear all Development Costs of Anti-CD11a in the Field in the Co-Promotion Territory through the successful completion of Phase II Clinical Trials, including but not limited to certain IND-enabling studies and supplying Anti-CD11a and all costs of -6- activities set forth in the Development Plan, as amended from time to time by the Project Core Team. (b) If Xoma elects the option set forth in Section 5.1(b) below, all Development Costs incurred by the Parties in the Co-Promotion Territory after the first Regulatory Approval for Anti-CD11a in the United States shall be charged against Operating Profits (or Losses). (c) Genentech shall bear all costs for development of Anti-CD11a in the Field not incurred in the Co-Promotion Territory. ARTICLE 3. MANAGEMENT OF THE COLLABORATION 3.1 Steering Committee. (a) Within thirty (30) days of the Effective Date, the Parties will establish a Steering Committee to oversee and manage the collaboration in the Co-Promotion Territory contemplated by this Agreement. The Steering Committee will be composed of two representatives appointed and replaced by Xoma and two representatives appointed and replaced by Genentech. Such representatives will be senior officers and/or managers of their respective companies. Any member of the Steering Committee may designate a substitute to attend and perform the functions of that member at any meeting of the Steering Committee. The Steering Committee will meet at least once each calendar quarter, or at any frequency agreed by the Steering Committee, and will operate by consensus. (b) The Steering Committee shall perform the following functions: (i) determine the overall strategy for and monitor the collaboration in the manner contemplated by this Agreement; (ii) review and approve development and commercialization plans and annual budgets formulated by the Project Core Team and annual budgets formulated by the Project Core Team or the Finance Committee. (iii) settle disputes or disagreements that are unresolved by the Project Core Team or Finance Committee unless otherwise indicated in this Agreement; and (iv) perform such other functions as appropriate to further the purposes of this Agreement as determined by the Parties. If the Steering Committee is unable to resolve a dispute regarding any issue presented to it, such dispute shall be resolved in accordance with Article 17 below. -7- 3.2 Project Core Team. (a) Within thirty (30) days of the Effective Date, the Parties will establish the Project Core Team to oversee and control all development and commercialization of Anti-CD11a in the Co-Promotion Territory, in the Field, including pre-clinical research, clinical research, manufacturing, regulatory filings, and post-approval development studies. If the Parties Co- Promote Licensed Products, the Product Core Team will also (i) monitor, review and direct the commercialization of Licensed Products in the Co-Promotion Territory, including annual marketing and sales budgets, annual forecasts of sales and production requirements, the annual marketing plan, the appropriate role for Genentech and Xoma to play in commercialization activities in the Co-Promotion Territory, broad product positioning and creative campaign strategies, pricing, managed care contract strategies, Phase IV clinical support (especially strategic direction), and allocation of Marketing Costs, Sales Costs and Administration Costs of each company as well as (ii) select trademarks for Licensed Products. The Project Core Team will be composed of three representatives appointed by each of Xoma and Genentech. Each representative will have one vote on all matters within the Project Core Team's purview. Such representatives will include individuals with expertise and responsibilities in the areas of preclinical development, clinical development, process sciences, manufacturing, regulatory affairs or product development and marketing. Either Party may replace any or all of its representatives at any time upon written notice to the other Party. Any member of the Project Core Team may designate a substitute to attend and perform the functions of that member at any meeting of the Project Core Team. The Project Core Team will meet at least once each calendar quarter, or more frequently, as agreed by the Project Core Team. The Project Core Team will operate by consensus. If the Project Core Team is unable to resolve a dispute regarding any issue presented to it, such dispute shall be resolved in accordance with Article 17 below. (b) The Project Core Team shall be responsible for formulating development and commercialization plans and an annual budget and for implementing all activities approved by the Steering Committee, except that Xoma shall formulate the first annual budget and submit it for approval to the Project Core Team within thirty (30) days of the Effective Date. The Project Core Team will finalize each subsequent annual budget and modify the Development Plan at least four months prior to the end of the then-current development year. (c) If any Genentech European development partner so requests, Xoma will consider in good faith allowing a representative of such partner to be a non-voting member of the Project Core Team. (d) The Project Core Team will cease operations and have no further function hereunder on the later of (i) the date on which the Parties are no longer developing any Licensed Product in the Co-Promotion Territory, or (ii) the date on which the Parties are no longer sharing Operating Profits or Losses with respect to any Licensed Product in the Co-Promotion Territory. -8- 3.3 Finance Committee. (a) Within thirty (30) days of the date Xoma elects the option set forth in Section 5.1(b) below, the Parties will establish the Finance Committee to be composed of two representatives appointed and replaced by each of Xoma and Genentech. Such representatives will include individuals with expertise and responsibilities in the areas of accounting, cost allocation, budgeting and financial reporting. Any member of the Finance Committee may designate a substitute to attend and perform the functions of that member at any meeting of the Finance Committee. The Finance Committee will operate by consensus. If the Finance Committee is unable to resolve a dispute regarding any issue presented to it, such dispute shall be resolved in accordance with Article 17. (b) The Finance Committee shall operate under the direction of the Steering Committee to provide services to and consult with the Project Core Team in order to address the financial, budgetary and accounting issues which arise in connection with the Development Plan and updates thereto as described in Exhibit A. (c) The Finance Committee shall have no involvement in the development of Licensed Products in the Genentech Territory, which shall be the responsibility of Genentech, subject to the terms and conditions of this Agreement. (d) The Finance Committee will cease operating and have no further function hereunder on the date on which the Parties are no longer sharing Operating Profits or Losses with respect to any Licensed Product in the Co-Promotion Territory. 3.4 * ARTICLE 4. DEVELOPMENT IN THE CO-PROMOTION TERRITORY 4.1 Development Efforts. Xoma and Genentech each agree to collaborate diligently in the development of Licensed Products in the Field and to use commercially reasonable and diligent efforts to develop and bring Licensed Products to market in the Field as soon as practicable. The Parties further agree to execute and substantially perform the Development Plan and to cooperate with the other in carrying out the Development Plan. As used in this Agreement, the term commercially reasonable and diligent efforts will mean those efforts consistent with the exercise of prudent scientific and business judgment, as applied to other pharmaceutical products of similar potential and market size by the Party in question. -9- 4.2 Genentech Development Responsibilities. Genentech agrees to be responsible for the following specific activities necessary to complete development of Anti-CD11a up to completion of Phase II Clinical Trials: (a) Transfer all preclinical data, assays and associated materials, protocols, procedures and any other information in Genentech's possession required to initiate clinical development of Anti-CD11a at no cost to Xoma. (b) Complete its development of a pilot process to manufacture Anti-CD11a. Transfer the cell bank for Anti-CD11a production as well as all associated assays, procedures and other information required for Xoma to supply Licensed Product for any IND-enabling studies and human clinical trials to the end of Phase II Clinical Trials. The Project Core Team will determine if any process improvements or refinements are required and which Party will be responsible for such improvements or refinements. Xoma will pay all costs incurred in making such improvements or refinements after Genentech has transferred the pilot process to Xoma and Xoma has accepted it, such acceptance not to be unreasonably withheld. (c) Conduct additional preclinical research as agreed upon by the Project Core Team and approved by the Steering Committee to develop Anti-CD11a for indications additional to the Initial Indications at Xoma's expense. Development Costs shall exclude the costs incurred by Genentech pursuant to (a) and (b) above. 4.3 Xoma Development Responsibilities. Xoma agrees to be responsible for the following specific activities necessary to complete development of Anti-CD11a up to the successful completion of Phase II Clinical Trials: (a) Use commercially reasonable and diligent efforts to conduct all IND- enabling studies and human clinical studies for the Initial Indications through the successful completion of Phase II Clinical Trials and make all filings with and supporting all communications with the US Food and Drug Administration ("FDA") necessary to conduct such studies. (b) Upon transfer of manufacturing technology by Genentech, Xoma will use Genentech's process at Xoma's manufacturing facilities (upgrading such facilities if necessary) to supply all requirements of Licensed Product for preclinical and human clinical trials up to the successful completion of Phase II Clinical Trials in the Co-Promotion Territory. 4.4 Drug Approval Applications. Consistent with the Development Plan, Genentech shall use commercially reasonable and diligent efforts to file Drug Approval Applications and seek Regulatory Approvals for Licensed Products in the Co-Promotion Territory. Prior to submitting any Drug Approval Application, the Parties, through the Project Core Team, shall consult, cooperate in preparing and mutually agree on such Applications and their content and scope. Genentech shall own all regulatory submissions including all Drug Approval -10- Applications for Licensed Products in the Co-Promotion Territory. If the Parties Co-Promote Licensed Products, the Parties will include on all package labels and inserts for Licensed Products sold in the Co-Promotion Territory the names and logos of Xoma and Genentech with equal prominence, to the extent permitted by the applicable regulatory authorities. 4.5 Development Delays. The Development Plan and the Parties contemplate that Xoma will successfully complete a Phase II Clinical Trial for one of the Initial Indications by December 31, 1998, assuming that Genentech provides necessary materials on a timely basis to Xoma and completes the transfer described in Section 4.2(a) by June 1, 1996. Any delay in such transfer will cause the December 31, 1998 date to be extended by the length of time of such delay. In addition, any material delay by Genentech in performing any of its obligations under this Agreement that actually causes Xoma not to be able to meet the timelines set forth in the Development Plan will cause the December 31, 1998 or extended date to be extended by the length of time of the delay by Genentech. ARTICLE 5. COMMERCIALIZATION IN THE CO-PROMOTION TERRITORY 5.1 Xoma Options for Commercialization. If Xoma successfully completes a Phase II Clinical Trial for one of the Initial Indications by December 31, 1998 (or such other date set pursuant to Section 4.5) as determined by the Steering Committee, then Xoma may choose either option A or option B as described below for continuing development and commercialization of Licensed Products: (a) Under Option A, Xoma will continue to participate in the development of Anti-CD11a to the extent elected by Genentech under Section 5.2(b) below. Genentech may elect to have Xoma participate in activities leading to Regulatory Approval in the Co-Promotion Territory. If Xoma incurs any further Development Costs due to such participation (elected by Genentech) during the period ending on the date on which Regulatory Approval by the FDA is first received for a Licensed Product, such costs will be funded by a loan from Genentech under the mechanism set forth in the Note Agreement. Upon such Regulatory Approval, all outstanding balances then due and owing to Genentech under the provisions of the Note Agreement would be accelerated and converted into the non-voting preferred stock described in the Note Agreement. Under Option A, Xoma would * (b) Under Option B, Xoma will continue to participate in the development of Anti-CD11a to the extent elected by Genentech under Section 5.2(b) below. Xoma will * receive the right to Co-Promote Licensed Products. Xoma may elect to have * . In such event, * , all amounts previously loaned to Xoma by Genentech will become immediately due and payable in cash, or, at Xoma's option, will be convertible into equity based on the fair market value of Xoma -11- Common Stock on such date. Upon receipt of Regulatory Approval from the FDA, all outstanding balances due and owing to Genentech would be accelerated as described in (a) above. Under Option B, Xoma would receive * Xoma will notify Genentech whether it elects Option A or Option B above within thirty (30) days after the successful completion of a Phase II Clinical Trial for one of the Initial Indications. 5.2 Genentech Options for Commercialization. (a) If Xoma elects the option set forth in Section 5.1(a) above, Genentech may choose to either (1) * or (2) * . Genentech shall notify Xoma of its election of option (1) or option (2) within thirty (30) days of receipt of notice from Xoma of its election under Section 5.1. If Genentech selects option (1), * . (b) Within fifteen days of receipt of Xoma's notice pursuant to Section 5.1 above, Genentech shall notify Xoma whether Genentech elects to assume all or some part of the responsibility (subject to * for the development of Licensed Products under either of the options selected by Xoma under Section 5.1 above, including scale-up of the commercial manufacturing process, conduct of Phase III Clinical Trials and activities associated with making the Drug Approval Application in the Co-Promotion Territory. Such election shall be at Genentech's sole discretion. All other development responsibilities will be determined by the Project Core Team. (c) In the event that Xoma does not successfully complete a Phase II Clinical Trial for one of the Initial Indications by December 31, 1998 (or such other date set under Section 4.5), Genentech may select from one of the following two options: (1) extend the period for successful completion of a Phase II Clinical Trial for one of the Initial Indications past December 31, 1998 to any date it wishes, thereby also extending the right of Xoma to select an option under Section 5.1 above, or (2) select the option set forth in Section 5.1(a) above. 5.3 Commercialization Efforts. If Xoma elects the option set forth in Section 5.1(b) above, Xoma and Genentech each agree to (i) collaborate diligently in the commercialization of the Licensed Products and (ii) use commercially reasonable and diligent efforts to commercialize the Licensed Products promptly and in such a manner as to maximize Operating Profits. The Parties agree that Genentech will play the primary role and Xoma the secondary role in all sales, marketing and product launch activities and tactical execution of marketing and sales promotional programs in the Co-Promotion Territory. The Parties shall be guided by a standard of reasonableness in economic terms and of fairness to each of the Parties, striving to balance as best they can the legitimate interests and concerns of the Parties and to realize the economic -12- potential of the Licensed Products. The Project Core Team (subject to approval by the Steering Committee) shall develop a plan for commercialization of Licensed Product at such time as the members of the Project Core Team decide it is useful to do so. Such plan shall, among other things, determine the responsibilities for sales of and distributing Licensed Products, development of marketing and promotional materials and conduct of training programs for Sales Representatives of both Parties. Unless otherwise agreed, Genentech shall have the sole responsibility with respect to the following: (a) Booking sales for and distributing the Licensed Products. (b) Handling all returns of the Licensed Products. (c) Handling all recalls of the Licensed Products. (d) Handling all aspects of order processing, invoicing and collection, Licensed Product distribution, warehousing, inventory and receivables, and collection of data of sales to hospitals and other end users (e.g., DDD data). (e) Handling all other customer service related functions. 5.4 Sales Efforts in the Co-Promotion Territory. (a) Although Genentech has the primary marketing role, Xoma shall be permitted to deploy Sales Representatives in the Co-Promotion Territory to the extent that such deployment will enhance the Parties' ability to maximize Operating Profits, but in no event may Xoma * in the Co-Promotion Territory. The Parties agree to allocate markets and accounts in an unbiased manner based on objective, quantifiable information and market research data with the objectives of allocating to each Party markets and accounts from which each such Party will have the opportunity to maximize Operating Profits. (b) The Parties shall recover their Sales Costs in accordance with Exhibit A. ARTICLE 6. DEVELOPMENT AND COMMERCIALIZATION IN GENENTECH TERRITORY 6.1 Development Costs, Marketing Costs and Cost of Goods Sold. Genentech shall bear all costs related to the development and commercialization of the Licensed Products in the Genentech Territory. Genentech shall have the sole responsibility for, and right to make all decisions regarding, all development and marketing activities in the Genentech Territory. 6.2 Cooperation on Development Efforts. To facilitate cooperation between the Parties on the worldwide development and marketing of Licensed Products, Genentech shall keep Xoma informed of all substantive development activities in the Genentech Territory. Genentech -13- shall consider in good faith any comments made by Xoma. Both Parties agree that they will do nothing during Licensed Product development activities to imperil Regulatory Approvals in any country in any territory. ARTICLE 7. EQUITY AND DEBT PURCHASES, MILESTONES, PROFIT SHARING, AND ROYALTIES 7.1 Payments upon Execution. On the Effective Date, Genentech shall make the following payments to Xoma: (a) $ * to purchase shares of Xoma Common Stock as set forth in the Stock Purchase Agreement. (b) $5,000,000 as an interest-bearing loan under the terms and conditions of the Note Agreement one of the terms of which is convertibility to the non-voting Preferred Stock of Xoma upon the earlier of (i) the date of receipt of any Regulatory Approval in the United States or (ii) the date that is ten days after the date the loan is due and payable, assuming the loan is not paid in full before such date. The purpose of Genentech's making such $5,000,000 loan is to provide Xoma the necessary funds to permit it to fulfill its initial development obligations under this Agreement, and, accordingly, one condition contained in the Note Purchase Agreement is a condition that any loans made under the Note Purchase Agreement are to be used solely for the development of Licensed Product as set forth in the Development Plan. The Parties believe that the $5,000,000 loan will be sufficient to support development for the first year, but Genentech will make up any shortfall between the $5,000,000 and the actual budget for the first year by increasing the loan by that amount when the next year's budget and modifications to the Development Plan are approved by the Steering Committee. Similarly, any amount of the $5,000,000 that is over the first year's budget will be carried forward to fund the next year's budget. 7.2 Other Note Purchases. Genentech will increase the amount loaned to Xoma under the terms and conditions of the Note Purchase Agreement for the purposes of developing Licensed Products at the beginning of each year to cover the budget formulated by the Project Core Team for that year until the earlier of (1) December 31, 1998 (or any later date selected by Genentech under Section 5.2(c)(1)) and (2) the completion of a Phase II Clinical Trial for an Initial Indication. In addition, if Xoma selects the option set forth in Section 5.1 (a) or Genentech selects such option for Xoma under Section 5.2(c)(2), Genentech will loan Xoma the amount necessary to fund its development obligations under the Development Plan based on the annual budget in a similar fashion each year until the receipt of Regulatory Approval (unless Genentech earlier terminates this Agreement) under the terms and conditions of the Note Purchase Agreement. 7.3 Milestone Payment. Genentech shall make a milestone payment to Xoma of $ * within thirty (30) days after the successful completion of a Phase II Clinical Trial for one of the Initial Indications, as recommended by the Project Core Team and approved by the -14- Steering Committee, but such milestone payment will be made if and only if such successful completion occurs on or before December 31, 1998 (as may be extended pursuant to Section 4.5). 7.4 Share of Operating Profits or Losses. If Xoma selects the option set forth in Section 5.1(b), Xoma and Genentech shall share in Operating Profits or Losses from sales of Licensed Products in the Co-Promotion Territory as provided in Exhibit A. The Parties shall share Operating Profits or Losses hereunder in the Co-Promotion Territory until the earlier of the date the Parties mutually agree to terminate the collaboration in the Co-Promotion Territory or * after the first commercial sale of Licensed Product in the Co-Promotion Territory. At the end of such period, Xoma's rights to Co-Promote shall cease. Genentech may continue to market Licensed Products and will pay Xoma a royalty of * of Royalty- Bearing sales worldwide in any year. 7.5 Royalties. (a) Genentech shall pay Xoma a royalty on Royalty-Bearing Sales of Licensed Products in the Genentech Territory as follows: * (b) Genentech shall pay any Third Party royalties owed on account of sales of Licensed Product in the Genentech Territory, including royalties owed due to the manufacture of Licensed Products by Genentech. Genentech shall receive a credit of * % of the royalties it pays on account of the manufacture, use or sale of Licensed Products against royalties due to Xoma * provided, however, that in no event shall royalties due to Xoma be reduced to * 7.6 Royalty Payment Reports. Royalty payments under this Agreement shall be made to Xoma or its designee quarterly within ninety (90) days following the end of each calendar quarter for which royalties are due. Each royalty payment shall be accompanied by a report summarizing the Royalty-Bearing Sales during the relevant three-month period. 7.7 Term of Royalty Obligations. (a) Genentech shall pay royalties hereunder with respect to each Licensed Product in each country in the Genentech Territory for * from the date of first commercial sale in such country. -15- (b) Upon expiration of the royalty term for a Licensed Product in a country as described above, Genentech shall thereafter have an exclusive, paid-up irrevocable license to make, use, sell, offer for sale, have sold and import that Licensed Product in that country. 7.8 Taxes. Xoma shall pay any and all taxes levied on account of, or measured exclusively by, any payment including royalties it receives under this Agreement. If laws or regulations require that taxes be withheld, Genentech will (i) deduct those taxes from the remittable royalty, (ii) timely pay the taxes to the proper taxing authority, and (iii) send proof of payment to Xoma within sixty (60) days following that payment. 7.9 Blocked Currency. In each country where the local currency is blocked and cannot be removed from the country, royalties shall continue to be accrued in such country and Royalty-Bearing Sales in such country shall continue to be reported, but such royalties will not be paid until they may be removed from the country. At such time as Genentech is able to remove currency from such country it shall also remove and pay the royalties accrued on Xoma's behalf. 7.10 Foreign Exchange. For the purpose of computing Royalty-Bearing Sales for Licensed Products sold in a currency other than United States Dollars, such currency shall be converted into United States Dollars in accordance with Genentech's customary and usual translation procedures consistently applied. 7.11 Payments to or Reports by Affiliates. Any payment required under any provision of this Agreement to be made to either Party or any report required to be made by any Party shall be made to or by an Affiliate of that Party if designated by that Party as the appropriate recipient or reporting entity. 7.12 Sales By Sublicensees. In the event Genentech grants licenses or sublicenses to others to make or sell Licensed Products in the Genentech Territory and such licenses or sublicenses are granted to an unrelated Third Party (understanding that Roche (as defined in Section 6(b) of the Stock Purchase Agreement) is not an unrelated Third Party), then Genentech * . Any licenses or sublicenses granted by Genentech shall include an obligation for the licensee or sublicensee to account for and report its Royalty-Bearing Sales of such Products on the same basis as if such sales were Royalty-Bearing Sales by Genentech, and Genentech shall pay royalties to Xoma as if the Royalty-Bearing Sales of the sublicensee were Royalty-Bearing Sales of Genentech. Genentech shall provide Xoma with copies of any licenses or sublicenses it grants, with any financial or other confidential terms redacted. -16- ARTICLE 8. MANUFACTURE AND SUPPLY 8.1 Transfer of Materials and Knowhow. No later than April 23, 1996, Genentech will transfer to Xoma the pre-master cell bank cells and associated media necessary for Xoma to undertake the manufacture of Licensed Products for preclinical development and provide know-how and expertise to help Xoma with such manufacture in a timely fashion provided that Xoma only uses such biological materials, know-how, reagents and expertise to manufacture Licensed Products. If Xoma is unable to use the pre-bank cells and must instead use cells from the master cell bank to be developed on or about May 1, 1996, the Project Core Team (with the approval of the Steering Committee) will discuss in good faith whether the delay in obtaining a cell line has caused a delay in the project timeline of the kind described in Section 4.5. All transfers of materials and information to Xoma shall be free of charge to Xoma; provided, however, that Genentech's obligation to train Xoma personnel in the use of such materials or information shall be limited to a reasonable number of hours. 8.2 Manufacture of Licensed Products for Clinical Trials. (a) Xoma will supply all quantities of Anti-CD11a for pre-clinical studies and clinical trials in the Co-Promotion Territory directed toward the successful completion of a Phase II Clinical Trial for the Initial Indications. (b) Xoma shall supply to Genentech, at Xoma's actual Cost of Goods Sold, all quantities of Licensed Products for preclinical studies and clinical trials in the Genentech Territory or for expanded needs recommended by the Project Core Team and approved by the Steering Committee (and budgeted) beyond the successful completion of a Phase II Clinical Trial for one of the Initial Indications subject to the election of Genentech under 5.2(b) on providing Licensed Products. 8.3 Termination of Participation. If Genentech elects to assume responsibility for manufacturing under Section 5.2(b), Xoma shall immediately provide to Genentech at Genentech's request all process and manufacturing technology, material and data and, provide access to regulatory filings sufficient to enable Genentech concurrently to produce and supply Licensed Product. Xoma shall provide reasonable assistance to Genentech with respect to such transfer so as to permit Genentech to begin manufacturing and supplying its requirements as soon as possible to minimize any disruption in the continuity of supply. ARTICLE 9. LICENSES 9.1 Licenses To Xoma Within The Field. Genentech grants to Xoma a co-exclusive royalty-free license under the Genentech Patents and Genentech Know-how in the Field to -17- develop, make, use, sell, and offer for sale Licensed Products in the Co-Promotion Territory. Xoma covenants and agrees not to develop, make, have made, use, sell, offer for sale, have sold or import any product using the Genentech Patents or Know-how outside of the Field. Xoma's rights to sell Licensed Products are subject to its having made the election to Co-Promote under Section 5.1(b). 9.2 License To Genentech Within the Field. Xoma grants to Genentech a worldwide royalty-free license under the Xoma Patents and Xoma Know-how in the Field to develop, make, use, sell, offer for sale, have sold and import Licensed Products. Such license shall be co-exclusive with Xoma in the Co-Promotion Territory and exclusive even as to Xoma in the Genentech Territory. Genentech covenants and agrees not to develop, make, have made, use, sell, offer for sale, have sold or import any product using the Xoma Patents or Know-how outside of the Field. 9.3 Sublicensing. Genentech may grant sublicenses * Unless otherwise agreed, each sublicensee shall be subject to all of the obligations of Genentech hereunder applicable to that part of the territory being licensed. ARTICLE 10. TRADEMARKS 10.1 Product Trademarks. All Licensed Products shall be sold in the Co-Promotion Territory under trademarks selected by the Project Core Team and owned by Genentech. Genentech hereby grants Xoma a fully-paid up co-exclusive license to use its trademarks in the Co-Promotion Territory for the Co-Promotion activities provided for in this Agreement. 10.2 Infringement of Trademarks. Xoma shall notify the Project Core Team promptly upon learning of any actual, alleged or threatened infringement of a trademark applicable to a Licensed Product (the "Trademark") in the Co-Promotion Territory or of any unfair trade practices, trade dress imitation, passing off of counterfeit goods, or like offenses in the Co-Promotion Territory. The Project Core Team shall confer with Genentech regarding the defense of such Trademark. The decision whether and how to defend such a Trademark will rest with Genentech; provided, however that if Genentech fails to bring an action or proceeding in the Co-Promotion Territory within a period of sixty (60) days of notice by Xoma to Genentech requesting action, Xoma will have the right, at its own expense, to bring and control any such action or proceeding in the Co-Promotion Territory by counsel of its own choice. 10.3 Costs of Defense for Solely Owned Trademarks. All of the costs, expenses and legal fees in bringing, maintaining and prosecuting any action to maintain, protect or defend a Trademark shall be borne solely by the Party bringing the action and any recovery shall be solely for that Party's account. -18- ARTICLE 11. CONFIDENTIALITY 11.1 Confidentiality; Exceptions. Except to the extent expressly authorized by this Agreement or otherwise agreed in writing, the Parties agree that, for the term of this Agreement and for * thereafter, the receiving Party shall keep confidential and shall not publish or otherwise disclose or use for any purpose other than as provided for in this Agreement any Information and other information and materials furnished to it by the other Party pursuant to this Agreement (collectively, "Confidential Information"), except to the extent that it can be established by the receiving Party that such Confidential Information: (a) was already known to the receiving Party, other than under an obligation of confidentiality, at the time of disclosure by the other Party; (b) was generally available to the public or otherwise part of the public domain at the time of its disclosure to the receiving Party; (c) became generally available to the public or otherwise part of the public domain after its disclosure and other than through any act or omission of the receiving Party in breach of this Agreement; (d) was disclosed to the receiving Party, other than under an obligation of confidentiality, by a Third Party who had no obligation to the disclosing Party not to disclose such information to others; or. (e) was subsequently developed by the receiving Party without use of the Confidential Information as demonstrated by competent written records. 11.2 Authorized Disclosure. Each Party may disclose Confidential Information hereunder to the extent such disclosure is reasonably necessary in filing or prosecuting patent applications, prosecuting or defending litigation, complying with applicable governmental regulations or conducting preclinical or clinical trials, provided that if a Party is required by law or regulation to make any such disclosure of the other Party's Confidential Information it will, except where impracticable for necessary disclosures, for example in the event of medical emergency, give reasonable advance notice to the other Party of such disclosure requirement and, except to the extent inappropriate in the case of patent applications, will use its reasonable efforts to secure confidential treatment of such Confidential Information required to be disclosed. In addition, each Party shall be entitled to disclose, under a binder of confidentiality containing provisions as protective as those of this Article 11, Confidential Information to consultants, potential sublicensees and other Third Parties only for any purpose provided for in this Agreement. Nothing in this Article 11 shall restrict any Party from using for any purpose any Information developed by it during the course of the collaboration hereunder. -19- 11.3 Survival. This Article 11 shall survive the termination or expiration of this Agreement for a period of * . 11.4 Termination of Prior Agreement. This Agreement supersedes the Confidentiality Agreements between the Parties dated October 11, 1995, one of which was last signed on October 20, 1995 and one of which was last signed on January 11, 1996 and both of which were amended on April 11, 1996, except that the Research Scientists, as defined in the Oxford Agreement, shall continue to be third party beneficiaries under this Agreement to the extent such previous Confidentiality Agreement is superseded. All Information exchanged between the Parties under that Agreement shall be deemed Confidential Information and shall be subject to the terms of this Article 11. 11.5 Publications. Prior to the launch of any Licensed Product in the Co-Promotion Territory, the Project Core Team will determine the overall strategy for publication in support of such Licensed Products in the Co-Promotion Territory. Except as required by law, each Party agrees that it shall not publish or present the results of studies carried out as part of the collaboration without the opportunity for prior review by the other Party. Each Party shall provide to the other the opportunity to review any proposed abstracts, manuscripts or presentations (including information to be presented verbally) which relate to the Field at least forty-five (45) days prior to their intended submission for publication and such submitting Party agrees, upon written request from the other Party, not to submit such abstract or manuscript for publication or to make such presentation until the other Party is given a reasonable period of time to seek patent protection for any material in such publication or presentation which it believes is patentable. ARTICLE 12. OWNERSHIP OF INTELLECTUAL PROPERTY AND PATENT RIGHTS 12.1 Ownership of Intellectual Property. Xoma shall own all inventions made under this Agreement solely by its employees. Genentech shall own all inventions made under this Agreement solely by its employees. All inventions made under this Agreement jointly by employees of Xoma and Genentech will be owned jointly by Xoma and Genentech and each Party shall retain full ownership under any Patents resulting therefrom, with full ownership rights in any field and the right to sublicense without the consent of the other Party, without accounting. The laws of the United States with respect to joint ownership of inventions shall apply in all jurisdictions giving force and effect to this Agreement. 12.2 Disclosure of Patentable Inventions. In addition to the disclosures required under Article 14, each Party shall provide to the other any invention disclosure submitted in the normal course and disclosing an invention useful in the Field and relating to a Licensed Product. Such invention disclosures shall be provided to the other Party within thirty (30) days after the Party determines that an invention has been made. -20- 12.3 Patent Filings. Each Party, at its sole discretion and responsibility shall file, prosecute and maintain Patents to cover its own discoveries and inventions relating to any Product in the Field and use reasonable efforts to file initially all applications in the United States. The determination of the countries in the Genentech Territory in which to file shall be made by Genentech, which shall have the right to direct and control all material actions relating to the prosecution or maintenance of patents in the Genentech Territory that are being presented by Xoma, including patent interferences, reexaminations, reissuances, oppositions and revocation proceedings. Genentech shall file, prosecute and maintain Patents to cover any joint discoveries and inventions relating to the Field in the United States. Genentech will also file, prosecute and maintain Patents to cover any joint discoveries and inventions relating to the Field in such countries in the Genentech Territory as it may determine. If Genentech elects not to file a joint Patent, it shall so inform Xoma. Xoma may then file, prosecute and maintain any such joint Patents. The Party which is responsible for filing such a joint Patent will be termed the "filing Party." The filing Party shall keep the other Party apprised of the status of each Patent and shall seek the advice of the other Party with respect to Patent strategy and draft applications and shall give reasonable consideration to any suggestions or recommendations of the other party concerning the preparation, filing, prosecution, maintenance and defense thereof. The Parties shall cooperate reasonably in the prosecution of all Patents covering joint inventions and covering Licensed Products and shall share all material information relating thereto promptly after receipt of such information. If, during the term of this Agreement, the filing Party intends to allow any Patent covering a Licensed Product to lapse or become abandoned without having first filed a substitute, the filing Party shall make reasonable efforts to notify the other Party of such intention at least sixty (60) days prior to the date upon which such Patent shall lapse or become abandoned, and the other Party shall thereupon have the right, but not the obligation, to assume responsibility for the prosecution, maintenance and defense thereof. Each Party agrees to bring to the attention of the other Party any patent or patent application it discovers, or has discovered, and which relates to the subject matter of this Agreement. 12.4 Initial Filings If Made Outside of the United States. The Parties agree to use reasonable efforts to ensure that any Patent filed outside of the United States prior to a U.S. filing will be in a form sufficient to establish the date of original filing as a priority date for the purposes of a subsequent U.S. filing. 12.5 Patent Costs. (a) Patent Costs arising in the Co-Promotion Territory after the election of Xoma under Section 5.1(b) shall be chargeable to the collaboration as Other Operating Income/Expense. (b) Patent Costs arising in the Genentech Territory after the Effective Date shall be borne by the Party responsible for filing, as will all Patent Costs arising in the Co- Promotion Territory unless and until the election of Xoma under Section 5.1(b). -21- 12.6 Enforcement Rights. (a) Notification of Infringement. If either Party learns of any infringement or threatened infringement by a Third Party of the Xoma Patents or Genentech Patents, such Party shall promptly notify the other Party and shall provide such other Party with available evidence of such infringement. (b) Enforcement. Genentech shall have the right, but not the obligation, to institute, prosecute and control at its own expense any action or proceeding with respect to infringement of any of the Genentech Patents, by counsel of its own choice. Xoma shall have the right, at its own expense, to be represented in any action by counsel of its own choice. Xoma shall have the right, but not the obligation, to institute, prosecute and control at its own expense any action or proceeding with respect to infringement of any of the Xoma Patents, by counsel of its own choice. Genentech shall have the right, at its own expense, to be represented in any action by counsel of its own choice. In the event of an infringement of a Joint Patent, the Steering Committee shall decide the best way for the Parties to proceed. If one Party brings any such action or proceeding, the other Party agrees to be joined as a party plaintiff if necessary to prosecute the action or proceeding and to give the first Party reasonable assistance and authority to file and prosecute the suit. Any damages or other monetary awards recovered pursuant to this Section 12.6(b) shall be allocated first to the costs and expenses of the Party bringing suit, then to the costs and expenses, if any, of the other Party. Any amounts remaining shall be allocated three-quarters (3/4) to the Party bringing suit and one-quarter (1/4) to the other Party. (c) Settlement with a Third Party. The Party that controls the prosecution of a given claim with respect to a Licensed Product shall also have the right to control settlement of such claim; provided, however, that if one Party controls, no settlement shall be entered into without the written consent of the other Party if such settlement would materially and adversely affect the interests of such other Party. If there is no agreement between the Parties, then the dispute will be resolved pursuant to Section 17. If the dispute is not resolved pursuant to Section 17, then the case may not be settled. 12.7 Infringement Defense. If a Third Party asserts that a patent or other right owned by it is infringed by any Licensed Product, Genentech will be solely responsible for deciding how and whether to defend against any such assertions at its cost and expense. Xoma shall have the right, at its own expense, to be represented in any such action by counsel of its choice. If Genentech is required to pay royalties to such Third Party as a result of such action, it will be entitled to credit such royalties against royalties owing to Xoma as described in Section 7.5(b). No settlement of such an action shall be entered into by Genentech without Xoma's written consent if such settlement would materially and adversely affect Xoma's interests. -22- ARTICLE 13. REPRESENTATIONS AND WARRANTIES 13.1 Representations and Warranties. Each of the Parties hereby represents and warrants as follows: (a) This Agreement is a legal and valid obligation binding upon such Party and enforceable in accordance with its terms. The execution, delivery and performance of the Agreement by such Party does not conflict with any agreement, instrument or understanding, oral or written, to which it is a Party or by which it is bound, nor violate any law or regulation of any court, governmental body or administrative or other agency having jurisdiction over it. (b) Such Party has not, and during the term of the Agreement will not, grant any right to any Third Party relating to its respective Patents and Know-how in the Field which would conflict with the rights granted to the other Party hereunder. (c) In addition, Genentech represents and warrants that it has the right to grant the licenses granted herein. 13.2 Performance by Affiliates. The Parties recognize that each may perform some or all of its obligations under this Agreement through Affiliates, provided, however, that each Party shall remain responsible and be guarantor of the performance by its Affiliates and shall cause its Affiliates to comply with the provisions of this Agreement in connection with such performance. ARTICLE 14. INFORMATION AND REPORTS 14.1 Information. Genentech and Xoma will disclose and make available to each other all preclinical, clinical, regulatory, commercial and other information, including without limitation all information relevant to the joint promotion of Licensed Products, known by Genentech or Xoma concerning Licensed Products at any time during co-development of Licensed Products by the Parties and during Co-Promotion if Xoma elects the option set forth in Section 5.1(b). Xoma will disclose any such information to Genentech at any time during the term of this Agreement. Each Party will use commercially reasonable and diligent efforts to disclose to the other Party all significant information promptly after it is learned or its significance is appreciated. Each Party shall own and maintain its own database of clinical trial data accumulated from all clinical trials of Licensed Products for which it was responsible and of adverse drug event information for all Licensed Products. At the option of the requesting Party, such data shall be provided in a computer readable format by the providing Party, to the extent available, which shall also assist in the transfer and validation of such data to the receiving Party. -23- 14.2 Complaints. Xoma shall maintain a record of all complaints it receives with respect to any Licensed Product. Xoma shall notify Genentech of any complaint received by Xoma in sufficient detail and within five (5) business days after the event, and in any event in sufficient time to allow Genentech to comply with any and all regulatory requirements imposed upon it in any country. Genentech shall notify Xoma of any complaint received by Genentech in the Co-Promotion Territory within forty-five (45) business days after the event. 14.3 Adverse Drug Events. The Parties recognize that the holder of a Drug Approval Application may be required to submit information and file reports to various governmental agencies on compounds under clinical investigation, compounds proposed for marketing, or marketed drugs. Information must be submitted at the time of initial filing for investigational use in humans and at the time of a request for market approval of a new drug. In addition, supplemental information must be provided on compounds at periodic intervals and adverse drug experiences must be reported at more frequent intervals depending on the severity of the experience. Consequently, each Party agrees to: (a) provide to the other for initial and/or periodic submission to government agencies significant information on the drug from preclinical laboratory, animal toxicology and pharmacology studies, as well as adverse drug experience reports from clinical trials and commercial experiences with the compound; (b) in connection with investigational drugs, report to the other within three (3) days of the initial receipt of a report of any unexpected or serious experience with the drug, or sooner if required for either Party to comply with regulatory requirements; and (c) in connection with marketed drugs, report to the other within five (5) business days of the initial receipt of a report of any adverse experience with the drug that is serious and unexpected or sooner if required for either Party to comply with regulatory requirements. Serious adverse experiences mean any experience that suggests a significant hazard, contraindication, side effect or precaution, or any experience that is fatal or life threatening, is permanently disabling, requires or prolongs inpatient hospitalization, or is a congenital anomaly, cancer, or overdose. An unexpected adverse experience is one not identified in nature, specificity, severity or frequency in the current investigator brochure or the U.S. labeling for the drug. Each Party also agrees that if it contracts with a Third Party for research to be performed by such Third Party on the drug, that Party agrees to require such Third Party to report to contracting Party the information set forth in subparagraph (i), (ii), and (iii) above. 14.4 Records of Net Sales and Costs. Each Party will maintain complete and accurate records which are relevant to costs, expenses, sales and payments under this Agreement and such records shall be open during reasonable business hours for a period of five (5) years from creation of individual records for examination at the other Party's expense and not more often than once each year by an independent public accountant selected by the other Party as described in A.6 of Exhibit A. Any records or accounting information received from the other Party shall -24- be Confidential Information for purposes of Article 11. Results of any such audit shall be provided to both Parties, subject to Article 11. 14.5 Contribution of Information. It is the intention of the Parties that each will bring to the collaboration such information in its possession that is useful to the development and commercialization of Licensed Products. 14.6 Publicity Review. The Parties agree that the public announcement of the execution of this Agreement shall be in the form of a press release to be agreed upon on or before the Effective Date and thereafter each Party shall be entitled to make or publish any public statement consistent with the contents thereof. Thereafter, Xoma and Genentech will jointly discuss and agree, based on the principles of this Section 14.6, on any statement to the public regarding this Agreement or any aspect of this Agreement subject in each case to disclosure otherwise required by law or regulation as determined in good faith by each Party. The principles to be observed by Xoma and Genentech in such public disclosures will be: accuracy, the requirements for confidentiality under Article 10, the advantage a competitor of Xoma or Genentech may gain from any public statements under this Section 14.6, and the standards and customs in the biotechnology and pharmaceutical industries for such disclosures by companies comparable to Xoma and Genentech. The terms of this Agreement may also be disclosed to (i) government agencies where required by law, including filings required to be made by law with the Securities and Exchange Commission, the New York Stock Exchange, or any national exchange, or (ii) Third Parties with the prior written consent of the other Party, which consent shall not be unreasonably withheld, so long as such disclosure is made under a binder of confidentiality (in the case of Third Parties), so long as highly sensitive terms and conditions such as financial terms are extracted from the Agreement or not disclosed upon the request of the other Party and the disclosing Party gives reasonable advance notice of the disclosure under the circumstances requiring the disclosure. ARTICLE 15. TERM AND TERMINATION 15.1 Term. This Agreement shall commence as of the Effective Date. The Parties have specifically provided elsewhere in this Agreement the term during which certain rights and obligations hereunder shall apply. Unless sooner terminated as provided herein and except as provided in Section 15.4 below, (a) the remaining provisions of this Agreement relating to activities in the Co-Promotion Territory shall continue in effect until the date on which the Parties are no longer entitled to receive a share of Operating Profits or Losses on any Licensed Product and (b) the remaining provisions of this Agreement relating to activities in the Genentech Territory shall continue in effect until the date on which Genentech is no longer paying a royalty on Royalty-Bearing Sales in the Genentech Territory. Those provisions shall govern the term of the rights and obligations specifically covered thereby. Upon the expiration of the term of this Agreement, all licenses granted to Genentech hereunder shall become fully paid up and irrevocable. -25- 15.2 Termination by either Party. (a) Either Party shall have the right to terminate this Agreement after December 31, 1998 (or such other date determined pursuant to Section 4.5), and the rights and obligations of the Parties shall be as follows: (i) if either Party terminates this Agreement after the successful completion of a Phase II Clinical Trial for one of the Initial Indications as determined by the Steering Committee, and Xoma had previously selected Option A under Section 5.1, then the non-terminating Party may elect, on the date of termination, * (ii) if Xoma terminates this Agreement after the successful completion of a Phase II Clinical Trial for one of the Initial Indications as determined by the Steering Committee, and Xoma had previously selected Option B under Section 5.1, then Genentech may elect, on the date of termination, * (iii) if Genentech terminates this Agreement after the successful completion of a Phase II Clinical Trial for one of the Initial Indications as determined by the Steering Committee, and Xoma had previously selected Option B under Section 5.1, then Xoma may elect, on the date of termination, * (iv) if Xoma terminates this Agreement and it has not yet successfully completed a Phase II Clinical Trial as determined by the Steering Committee, then Genentech may elect, on the date of termination, * (v) if Genentech terminates this Agreement and Xoma has not yet successfully completed a Phase II Clinical Trial as determined by the Steering Committee, then Xoma may elect, on the date of termination, * -26- Under any of (i) through (v) above, the provisions of the Note Agreement shall remain in full force and effect. Any such termination shall be effective six months after written notice thereof. The terminating Party shall reimburse the other Party for any costs the other Party incurs due to non-cancelable commitments made under this Agreement so long as the other Party does not make any such commitments after receiving notice of termination. (b) In the event of termination by Xoma pursuant to Section 15.2 or by Genentech pursuant to Section 15.2(a)(v) or Section 15.3 due to Xoma's material breach, Xoma shall (i) remain responsible for (A) its share of Development Costs in the Co-Promotion Territory and (B) for its supply obligations hereunder; until, in the case of both (A) and (B), Xoma has fully transferred, and enabled Genentech to perform, all of Xoma's responsibilities under this Agreement, including but not limited to supplying Genentech's requirements for Anti- CD11a for a reasonable period of time to allow Genentech to find an alternate source of supply; and (ii) make its personnel and other resources reasonably available to Genentech as necessary to effect an orderly transition of development and/or commercialization responsibilities, with the cost of such personnel and resources to be borne by Genentech after the effective date of termination. (c) In the event of termination by Xoma pursuant to Section 15.3 due to Genentech's material breach, Genentech will make its personnel and other resources reasonably available to Xoma as necessary to effect an orderly transition of development and/or commercialization responsibilities, with the cost of such personnel and resources to be borne by Xoma after the effective date of termination. (d) Upon any termination under this Section 15.2, the Parties shall have no further rights or obligations under this Agreement except as set forth in Sections 15.4 and 15.5. 15.3 Termination for Breach. If either Party materially breaches this Agreement at any time, which breach is not cured within sixty (60) days of written notice thereof from the non-breaching Party (or if such breach is not susceptible of cure within such period, the breaching Party is not making diligent good faith efforts to cure such breach), the non-breaching Party shall have the right to terminate this Agreement. Upon such termination, the Parties shall have no further rights or obligations under this Agreement except as set forth herein or in Section 15.5. The Parties acknowledge and agree that failure to exercise any right or option with respect to any Licensed Product or to take any action expressly within the discretion of a Party shall not be deemed to be material breach hereunder. 15.4 Surviving Rights. Except as modified above in Sections 15.2 and 15.3, the obligations and rights of the Parties under Articles 1, 11, 12, 16, 17 and 18 and Sections 14.4, 15.2 and 15.3 of this Agreement will survive termination or expiration (in the case of Article 11 and Section 14.4 for the periods set forth therein). If Genentech must continue to pay a royalty to Xoma after termination, the provisions of Sections 7.5(b) through and including 7.12 shall survive such termination. -27- 15.5 Accrued Rights, Surviving Obligations. Termination, relinquishment or expiration of the Agreement for any reason shall be without prejudice to any rights which shall have accrued to the benefit of either party prior to such termination (including paid up irrevocable licenses), relinquishment or expiration, including damages arising from any breach hereunder. Such termination, relinquishment or expiration shall not relieve either Party from obligations which are expressly indicated to survive termination or expiration of the Agreement. ARTICLE 16. INDEMNIFICATION 16.1 Indemnification in the Genentech Territory. (a) Genentech hereby agrees to save, defend and hold Xoma and its agents and employees harmless from and against any and all suits, claims, actions, demands, liabilities, expenses and/or loss, including reasonable legal expense and attorneys' fees ("Losses") resulting directly from the manufacture, use, handling, storage, sale or other disposition of chemical agents or Licensed Products sold or used in the Genentech Territory by Genentech, its Affiliates, agents or sublicensees except to the extent such Losses result from the negligence or willful misconduct of Xoma, and from any Losses resulting directly from Xoma's use of technology supplied to Xoma by Genentech except to the extent any such Losses result from modifications by Xoma (without Genentech's written consent) or a Third Party of such technology. (b) In the event that Xoma is seeking indemnification under Section 16.1(a), it shall inform Genentech of a claim as soon as reasonably practicable after it receives notice of the claim, shall permit Genentech to assume direction and control of the defense of the claim (including the right to settle the claim solely for monetary consideration), and shall cooperate as requested (at the expense of Genentech) in the defense of the claim. (c) Xoma hereby agrees to save, defend and hold Genentech and its agents and employees harmless from and against any and all suits, claims, actions, demands, liabilities, expenses and/or loss, including reasonable legal expense and attorneys' fees ("Losses") resulting directly from the manufacture by Xoma of Licensed Products sold or used in the Genentech Territory by Genentech, its Affiliates, agents or sublicensees or otherwise from the negligence or willful misconduct of Xoma and from any Losses resulting directly from Genentech's use of any technology supplied to Genentech by Xoma except to the extent any such Losses result from modifications by Genentech (without Xoma's written consent) or a Third Party of such technology. (d) In the event Genentech is seeking indemnification under Section 16.1(c), it shall inform Xoma of a claim as soon as reasonably practicable after it receives notice of the claim, shall permit Xoma to assume direction and control of the defense of the claim (including the right to settle the claim solely for monetary consideration), and shall cooperate as requested (at the expense of Xoma) in the defense of the claim. -28- 16.2 Indemnification in the Co-Promotion Territory. (a) If the Parties Co-Promote Licensed Product, then each Party agrees to save, defend and hold the other Party and its agents and employees harmless from and against any and all losses resulting directly or indirectly from the manufacture, use, handling, storage, sale or other disposition of chemical agents or Licensed Products sold or used in the Co- Promotion Territory by the indemnifying Party, its Affiliates, agents or sublicensees, but only to the extent such losses result from the negligence or willful misconduct of the indemnifying Party or its employees and agents and do not also result from the negligence or willful misconduct of the Party seeking indemnification. Any other losses resulting directly or indirectly from the manufacture, use, handling, storage, sale or other disposition of chemical agents or Licensed Products in the Co-Promotion Territory shall be charged to the collaboration as an Other Operating Income/Expense at the time such claim is finally determined, whether by judgment, award, decree or settlement. (b) In the event that either Party receives notice of a claim with respect to a Licensed Product in the Co-Promotion Territory, such Party shall inform the other Party as soon as reasonably practicable. The Parties shall confer how to respond to the claim and how to handle the claim in an efficient manner. ARTICLE 17. DISPUTE RESOLUTION 17.1 Disputes. The Parties recognize that disputes as to certain matters may from time to time arise during the term of this Agreement which relate to either Party's rights and/or obligations hereunder. It is the objective of the Parties to establish procedures to facilitate the resolution of disputes arising under this Agreement in an expedient manner by mutual cooperation and without resort to litigation. To accomplish this objective, the Parties agree to follow the procedures set forth in this Article 17 if and when a dispute arises under this Agreement. Unless otherwise specifically recited in this Agreement, disputes among members of the Project Core Team or the Finance Committee will be resolved as recited in this Article 17. Any disputes relating to the collaboration shall be first referred to the Steering Committee by either Party at any time after such dispute has arisen and such Party believes that there has been sufficient discussion of the matter at the Project Core Team level. If the Steering Committee is unable to resolve such a dispute within ninety (90) days of being requested by a Party to resolve the dispute or the Steering Committee is unable to resolve a dispute among its members, any Party may, by written notice to the other, invoke the provisions of Section 17.2 hereinafter. 17.2 Mediation. The Parties agree that any dispute, controversy or claim (except as to any issue relating to intellectual property owned in whole or in part by Xoma or Genentech or any equitable claim) arising out of or relating to this Agreement, or the breach, termination, or invalidity thereof, shall be resolved through negotiation and mediation. If a dispute arises -29- between the parties, and if said dispute cannot be resolved pursuant to Section 17.1, the Parties agree to try in good faith to resolve such dispute by mediation administered by the American Arbitration Association in accordance with its Commercial Mediation Rules. The mediation proceeding shall be conducted at the location of the party not originally requesting the resolution of the dispute. The parties agree that they shall share equally the cost of the mediation filing and hearing fees, and the cost of the mediator. Each party must bear its own attorney's fees and associated costs and expenses. 17.3 Jurisdiction. For the purposes of this Article 17, the Parties agree to accept the jurisdiction of the federal courts located in the Northern District of California for the purposes of enforcing the agreements reflected in this Article. 17.4 Determination of Patents and Other Intellectual Property. Any dispute relating to the determination of validity of a Party's Patents or other issues relating solely to a Party's intellectual property shall be submitted exclusively to the federal courts located in San Francisco County, California, and the Parties hereby consent to the jurisdiction and venue of such court. ARTICLE 18. MISCELLANEOUS 18.1 Assignment. (a) Either Party may assign any of its rights under this Agreement in any country to any Affiliates and, with the prior written consent of the other Party, may delegate its obligations under this Agreement in any country to any Affiliates; provided, however, that any such assignment shall not relieve the assigning Party of its responsibilities for performance of its obligations under this Agreement. (b) Either Party may assign all of its rights and obligations under this Agreement in connection with a merger or similar reorganization or the sale of all or substantially all of its assets, or otherwise with the prior written consent of the other Party; provided, however, that Xoma may not so assign its rights and obligations if it is not the surviving company and the acquiror of Xoma is a direct competitor of Genentech. This Agreement shall survive any such merger or reorganization of either Party with or into, or such sale of assets to, another party and no consent (except as otherwise set forth above) for such merger, reorganization or sale shall be required hereunder. (c) This Agreement shall be binding upon and inure to the benefit of the successors and permitted assigns of the Parties. Any assignment not in accordance with this Agreement shall be void. 18.2 Non-Solicitation. The Parties recognize that each Party has a substantial interest in preserving and maintaining confidential its Confidential Information hereunder. Each Party recognizes that certain of the other Party's employees, including those engaged in development, -30- marketing and sale of any Licensed Product, may have access to such Confidential Information of the other Party. The Parties therefore agree not to solicit or otherwise induce or attempt to induce for purposes of employment, any employees from the other Party involved in the development, marketing or sales of any Licensed Product during the period in which any Party is developing or commercializing a Licensed Product in the Co-Promotion Territory hereunder and for a period of two years thereafter. 18.3 Consents Not Unreasonably Withheld. Whenever provision is made in this Agreement for either Party to secure the consent or approval of the other, that consent or approval shall not unreasonably be withheld, and whenever in this Agreement provision is made for one Party to object to or disapprove a matter, such objection or disapproval shall not unreasonably be exercised. 18.4 Retained Rights. Nothing in this Agreement shall limit in any respect the right of either Party to conduct research and development with respect to and market products outside the Field using such Party's technology. 18.5 Force Majeure. Neither Party shall lose any rights hereunder or be liable to the other Party for damages or losses on account of failure of performance by the defaulting Party if the failure is occasioned by government action, war, fire, explosion, flood, strike, lockout, embargo, act of God, or any other cause beyond the control of the defaulting Party, provided that the Party claiming force majeure has exerted all reasonable efforts to avoid or remedy such force majeure; provided, however, that in no event shall a Party be required to settle any labor dispute or disturbance. 18.6 Further Actions. Each Party agrees to execute, acknowledge and deliver such further instruments, and to do all such other acts, as may be necessary or appropriate in order to carry out the purposes and intent of this Agreement. 18.7 No Right to Use Names. Except as otherwise provided herein, no right, express or implied, is granted by the Agreement to use in any manner the name "Xoma," "Genentech" or any other trade name or trademark of the other Party or its Affiliates in connection with the performance of the Agreement. 18.8 Notices. All notices hereunder shall be in writing and shall be deemed given if delivered personally or by facsimile transmission (receipt verified), telexed, mailed by registered or certified mail (return receipt requested), postage prepaid, or sent by express courier service, to the Parties at the following addresses (or at such other address for a party as shall be specified by like notice; provided, that notices of a change of address shall be effective only upon receipt thereof). -31- If to XOMA, addressed to: XOMA CORPORATION 2910 7th Street, Berkeley California 94710 Attention: Corporate Secretary Telephone: (510) 644-1170 Telecopy: (510) 649-7571 with a copy to: C.L. Dellio If to Genentech, addressed to: GENENTECH, INC. 460 Point San Bruno Boulevard South San Francisco, CA 94080 Attention: Corporate Secretary Telephone: (415) 225-1000 Telecopy: (415) 952-9881 18.9 Waiver. Except as specifically provided for herein, the waiver from time to time by either of the Parties of any of their rights or their failure to exercise any remedy shall not operate or be construed as a continuing waiver of same or of any other of such Party's rights or remedies provided in this Agreement. 18.10 Severability. If any term, covenant or condition of this Agreement or the application thereof to any Party or circumstance shall, to any extent, be held to be invalid or unenforceable, then (i) the remainder of this Agreement, or the application of such term, covenant or condition to Parties or circumstances other than those as to which it is held invalid or unenforceable, shall not be affected thereby and each term, covenant or condition of this Agreement shall be valid and be enforced to the fullest extent permitted by law; and (ii) the Parties hereto covenant and agree to renegotiate any such term, covenant or application thereof in good faith in order to provide a reasonably acceptable alternative to the term, covenant or condition of this Agreement or the application thereof that is invalid or unenforceable, it being the intent of the Parties that the basic purposes of this Agreement are to be effectuated. 18.11 Ambiguities. Ambiguities, if any, in this Agreement shall not be construed against any Party, irrespective of which Party may be deemed to have authorized the ambiguous provision. 18.12 Counterparts. This Agreement may be executed in two or more counterparts, each of which shall be deemed an original, but all of which together shall constitute one and the same instrument. 18.13 Entire Agreement. This Agreement, including all Exhibits attached hereto which are hereby incorporated herein by reference, sets forth all the covenants, promises, agreements, warranties, representations, conditions and understandings between the Parties hereto and -32- supersedes and terminates all prior agreements and understandings between the Parties. There are no covenants, promises, agreements, warranties, representations, conditions or understandings, either oral or written, between the Parties other than as set forth herein and therein. No subsequent alteration, amendment, change or addition to this Agreement shall be binding upon the Parties hereto unless reduced to writing and signed by the respective authorized officers of the Parties. IN WITNESS WHEREOF, the Parties have executed this Agreement in duplicate originals by their proper officers as of the date and year first above written. XOMA CORPORATION GENENTECH, INC. By:---------------------------------- By:--------------------------- Clarence L. Dellio John P. McLaughlin Senior Vice President, Operation Executive Vice President EXHIBIT A FINANCIAL PLANNING, ACCOUNTING AND REPORTING FOR THE XOMA/GENENTECH COLLABORATION AGREEMENT This Exhibit A to the Collaboration Agreement (the "Agreement") dated as of April 22, 1996, between Xoma Corporation ("Xoma") and Genentech, Inc. ("Genentech") addresses the financial planning, accounting policies and procedures to be followed in determining Operating Profits or Losses and related sharing of revenue and expenses in the Co-Promotion Territory if Xoma elects the option set forth in Section 5.1(b) of the Agreement. Terms not defined in this Exhibit shall have the meanings set forth in the Agreement. This Exhibit sets forth the principles for reporting actual results and budgeted plans of the combined operations in the Co-Promotion Territory, the frequency of reporting, and the methods of determining payments to the parties and auditing of accounts. For purposes of this Exhibit only, the consolidated accounting of operations for the collaboration in the Co-Promotion Territory shall be referred to as GenXoma. GenXoma is not a legal entity and has been defined for identification purposes only. A.1. Principles of Reporting The results of operations of GenXoma will be presented in the following format, with the categories as defined in Section A.4 below: Xoma Genentech Total Gross Sales less Sales Returns and Allowances = Net Sales less Cost of Sales = Gross Profits less Marketing Costs less Sales Costs less Development Costs chargeable to GenXoma less Other Operating Income/Expense = Contribution less Distribution Costs less Administration Costs = Operating Profit (Loss) It is the intention of the Parties that the interpretation of these definitions will be consistent with generally accepted accounting principles in the United States. -2- A.2. Frequency of Reporting The fiscal year of GenXoma will be a calendar year. Reporting by each Party for GenXoma revenues and expenses will be performed as follows: Reporting Event Frequency Timing of Submission Actuals Quarterly Q1-Q3: +30 days Q4: +45 days Forecasts Quarterly Mid Quarter (rest of year - by quarter) Budgets Annually October 15th (one year - by month) Long Range Plan Annually May 1st (current year plus 5 years) Genentech will be responsible for the preparation of consolidated reporting, calculation of the profit/loss sharing and determination of the cash settlement. Genentech will provide the Finance Committee within five working days of the submission date shown above, a statement showing the consolidated results and calculations of the profit/loss sharing and cash settlement required in a format agreed to by the Parties. Reports of actual results compared to budget will be made to the Project Core Team on a quarterly basis. After approval by the Finance Committee as to amounts, the Finance Committee will forward the report to the Steering Committee for its approval. Line item variances from budgets judged to be significant by the Finance Commitee will only be included in calculation of Operating Profit and Loss when approved by the Project Core Team and the Steering Committee. On a monthly basis Genentech will supply Xoma with Gross Sales in units of each month's sales according to Genentech's sales reporting system, which shall be consistent with the definitions in Section A.4. The Finance Committee will meet as appropriate but at least quarterly to review and approve the following: -3- - Actual Results - Forecasts - Budget - Inventory Levels - Sales Returns and Allowances - Other financial matters, including each Party's methodologies for charging costs and allocating Sales Representatives to GenXoma for actuals, forecasts, budgets and long range plans and the results of applying such methodologies. A.3. Budget and Long Range Plan Responsibility for the Budget and Long Range Plan will rest with the Project Core Team, who will develop budgets for development and commercialization in coordination with the Finance Committee, subject to final approval by the Steering Committee. Budgets will be prepared annually. In addition, headcount chargeable to GenXoma will be agreed to annually. Budgets will be supplemented with detailed business plans for clinical trials, registration applications, and detailed plans for product introduction, sales efforts and promotion as determined by the Project Core Team. Budgets, once approved by the Steering Committee, can only be changed with the approval of the Steering Committee. A five-year Long Range Plan for GenXoma will be established on a yearly basis under the direction of the Steering Committee and submitted to Genentech and Xoma by May 1st. A.4. Definitions A.4.1 "Administration Costs" means costs chargeable to GenXoma equal to * % of the sum of each party's own Marketing Costs and Sales Costs (both only to the extent chargeable to GenXoma). A.4.2 "Allocable Overhead" means costs incurred by a Party or for its account which are attributable to a Party's supervisory, services, occupancy costs, corporate bonus (to the extent not charged directly to department), and its payroll, information systems, human relations or purchasing functions and which are allocated to company departments based on space occupied or headcount or other activity-based method. Allocable Overhead shall not include any costs attributable to general corporate activities including, by way of example, executive management, investor relations, business development, legal affairs and finance. -4- A.4.3. "Cost of Goods Sold" means the fully burdened cost of the Licensed Product in final therapeutic form. The fully burdened cost of the Licensed Product will be determined in accordance with generally accepted accounting principles in the United States as applied by the Party performing or contracting for each stage of the manufacturing process and will include direct labor, material, product testing costs and Allocable Overhead. A.4.4. "Cost of Sales" means Cost of Goods Sold, Third Party Royalties * (i.e., any allocable intellectual property acquisition and licensing costs) and outbound freight on sales if borne by the seller. A.4.5. "Development Costs" means costs, including Allocable Overhead, incurred in any phase of the activities required to obtain the authorization and/or ability to manufacture, formulate, fill, ship and/or sell a Licensed Product in the Field in commercial quantities in the Co-Promotion Territory. Development Costs shall include but are not limited to the cost of studies on the toxicological, pharmacokinetic, metabolic or clinical aspects of a Licensed Product conducted internally or by individual investigators, or consultants necessary for the purpose of obtaining and/or maintaining approval of a Licensed Product in the Field by a government organization in a country of the Co-Promotion Territory, and costs for preparing, submitting, reviewing or developing data or information for the purpose of submission to a governmental authority to obtain and/or maintain approval of a Licensed Product in the Field in a country of the Co-Promotion Territory as well as costs of process development scale-up and recovery (including allocable depreciation and plant operating costs). In addition, Development Costs in the Co-Promotion Territory shall include the cost of post-launch clinical studies in support of a Licensed Product in the Field in the Co- Promotion Territory. Development Costs in the Co-Promotion Territory shall include expenses for compensation, benefits and travel and other employee-related expenses, as well as data management, statistical designs and studies, document preparation, and other expenses associated with the clinical testing program. A.4.6. "Distribution Costs" means the costs, including Allocable Overhead, specifically identifiable to the distribution of a Licensed Product including customer services, collection of data of sales to hospitals and other end users (e.g. DDD sales data), order entry, billing, credit and collection and other activities described in Section 5.3 of the Agreement. For the purpose of this Agreement, only Genentech will charge GenXoma for Distribution Costs an amount of * % of Net Sales in a lump sum. A.4.7. "Gross Sales" means the gross amount invoiced by either Party or their Affiliates or permitted sublicensees for sales of a Licensed Product to Third Parties in the Co- Promotion Territory. -5- A.4.8. "Marketing Costs" means the costs, excluding Allocable Overhead, of marketing, promotion, advertising, professional education, product related public relations, relationships with opinion leaders and professional societies, market research, healthcare economics studies and other similar activities directly related to the Licensed Products and approved by the Joint Commercialization Committee. Such costs will include both internal costs (e.g., salaries, benefits, supplies and materials, etc.) as well as outside services and expenses (e.g., consultants, agency fees, meeting costs, etc.). Marketing Costs shall also include activities related to obtaining reimbursement from payers and costs of sales and marketing data. Marketing Costs will specifically exclude the costs of activities which promote either Party's business as a whole without being product specific (such as corporate image advertising). A.4.9. "Net Sales" means Gross Sales less the sum of (a), (b) and (c) where (a) is a provision, determined under generally accepted accounting principles in the United States, for (i) trade, cash and quantity discounts or rebates (other than price discounts granted at the time of invoicing and which are included in the determination of Gross Sales), (ii) credits or allowances given or made for rejection or return of, and for uncollectible amounts on, previously sold products or for retroactive price reductions (including Medicare and similar types of rebates), (iii) taxes, duties or other governmental charges levied on or measured by the billing amount, as adjusted for rebates and refunds, (iv) charges for freight and insurance directly related to the distribution of Products, and (v) credits or allowances given or made for wastage replacement, indigent patient and any other sales programs agreed to by the Parties, (b) is a periodic adjustment of the provision determined in (a) to reflect amounts actually incurred for (i), (ii), (iii), (iv) and (v), and (c) is the Combination Product Adjustment as defined in the Agreement, if any. Provisions allowed in (a) and adjustments made in (b) and (c) will be reviewed by the Finance Committee. A.4.10. "Operating Profit or Loss" means GenXoma's Net Sales less the following items: Cost of Sales, Marketing Costs, Sales Costs, Development Costs, (to the extent chargeable to GenXoma), Other Operating Income/Expense, Distribution Costs and Administrative Costs, for a given period. A.4.11. "Other Operating Income/Expense" means other operating income or expense from or to third parties which is not part of the primary business activity of GenXoma, but is considered and approved by the Finance Committee as income or expense generated from GenXoma operations, and limited to the following: - Inventory Write-Offs - Patent Costs (as limited byArticle 12 of the Agreement) - Product liability insurance to the extent the Parties obtain a joint policy -6- - Indemnification costs (as defined in Article 16 of the Agreement) - Other (To be approved by Steering Committee) A.4.12. "Patent Costs" means the fees and expenses paid to outside legal counsel and experts, and filing and maintenance expenses, incurred after the Effective Date in connection with the establishment and maintenance of rights under Patents covering any Licensed Product, including costs of patent interference, reexamination, reissue, opposition and revocation proceedings. A.4.13. "Sales Costs" means costs, including Allocable Overhead, approved by the Project Core Team and the annual budget and specifically identifiable to the sales of Licensed Products to all markets in the Co-Promotion Territory including the managed care market. Sales Costs shall include costs associated with Sales Representatives, including compensation, benefits and travel, supervision and training of the Sales Representatives, sales meetings, and other sales expenses. Sales Costs will not include the start-up costs associated with either Party's sales force, including recruiting, relocation and other similar costs. A.4.14. "Sales Returns and Allowances" means Gross Sales less Net Sales. A.5. Audits and Interim Reviews Either Party shall have the right to request that the other Party's independent accounting firm perform an audit or interim review of the other Party's books in order to express an opinion regarding said Party's compliance with generally accepted accounting principles. Such audits or review will be conducted at the expense of the requesting Party. Either Party shall have the right to request that its independent accounting firm perform an audit of the other Party's books of accounts for the sole purpose of verifying compliance with the Agreement. Such audits will be conducted at the expense of the requesting Party; provided, however, that if the audit results in an adjustment of greater that * % of Operating Losses or Profits in any period, the cost of the audit will be borne by the Party audited. Audit results will be shared with both Parties. A.6. Payments between the Parties Balancing payments between the Parties will be approved by the Steering Committee based on Operating Profit or Loss. Payments will be made quarterly based on actual results within 90 days after the end of each quarter, adjusted for reimbursement of the net expenses or income incurred or received by each Party. -7- A.7. Accounting for Development Costs, Marketing Costs and Sales Costs All Development Costs, Marketing Costs and Sales Costs will be based on the appropriate costs definition stated in Section A.4 of this Exhibit. Each party shall report Development Costs in a manner consistent with its Project Cost System. In general, these project cost systems report actual time spent on specific projects, apply the actual labor costs, capture actual costs of specific projects and allocate other expenses to projects. For Marketing Costs, the Parties will report costs based on spending in Marketing departments. The Parties acknowledge that the methodologies used will be based on systems in place and consistent with Section A.10 of this Exhibit. For the purpose of determining actual and budgeted Sales Costs, the Parties, through the Project Core Team and the Finance Committee shall determine the number of Sales Representatives selling Licensed Products during the period and develop a method consistent with Section A.4 and A.10 of this Exhibit to allocate Sales Costs to those Sales Representatives. A.8. Sharing of Operating Profits and Losses The Parties agree to share the Operating Profit or loss resulting from the collaborative arrangement in the Co-Promotion Territory according to the following manner: For each calendar year, Xoma shall receive * % of the Operating Profits. To the extent there is an Operating Loss on sales of Licensed Product in the Co-Promotion Territory in any calendar year, Xoma shall absorb * % of such loss. A.9. Start of Operations Operation of GenXoma will be deemed to commence on the date that Xoma selects the option set forth in Section 5.1(b) of the Agreement. Costs incurred prior to that date are not chargeable to GenXoma. A.10. Guidelines for Charging Costs The following guidelines shall be used in determining amounts chargeable to GenXoma. 10.1 If an expense is specifically and exclusively (i.e., for no other product) used for the development or commercialization of a Licensed Product in -8- the Field in the Co-Promotion Territory, then 100% of the expense will be charged to GenXoma. 10.2 If an expense is specifically and exclusively (i.e., for no other product) used for the development or commercialization of a Licensed Product in the Field in both the Co-Promotion Territory and the Genentech Territory, then the following shall apply: (a) If the portion of that expense used for the development or commercialization of a Licensed Product in the Field in the Genentech Territory can be objectively determined through specific means (e.g., man hours of effort, amounts consumed, etc.), then the amount so used will be charged to Genentech and the remaining portion will be charged to GenXoma. (b) If the portion of that expense used for the development or commercialization of a Licensed Product in the Field in the Genentech Territory cannot be objectively determined through specific means, then only the direct and incremental costs related to the Licensed Product in the Field in the Genentech Territory will be charged to Genentech and the remaining portion will be charged to GenXoma. 10.3 If an expense within the Co-Promotion Territory is not specifically and exclusively (i.e., for other products in addition to a Licensed Product) used for the development or commercialization of a Licensed Product in the Field in the Co-Promotion Territory, then the following shall apply: (a) If the portion of that expense used for the development or commercialization of a Licensed Product in the Field in the Co- Promotion Territory can be objectively determined through specific means (e.g., man hours of effort, amounts consumed, etc.), then the amount so used will be charged to GenXoma. (b) If the portion of that expense used for the development or commercialization of a Licensed Product in the Field in the Co- Promotion Territory cannot be objectively determined through specific means, then only the direct and incremental costs related to the Licensed Product in the Field shall be charged to GenXoma. EXHIBIT B * EXHIBIT C * * -2- * -3- * -4-