Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.  Yes [x]  No [ ]

            Indicate by check mark whether the registrant is an accelerated filer (as defined in Rule 12b-2 of Act).   Yes [x]  No [ ]

            Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant's knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. [x]

            The approximate aggregate market value of voting stock held by non-affiliates of the registrant is $7,566,161,679 as of January 31, 2003^(A)

            Number of shares of Common Stock outstanding as of January 31, 2003:  512,577,987

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            In this report, "Genentech," "we," "us" and "our" refer to Genentech, Inc. "Common Stock" refers to Genentech's common stock, par value $0.02 per share, "Special Common Stock" refers to Genentech's callable putable common stock, par value $0.02 per share and "Redeemable Common Stock" refers to Genentech's redeemable common stock, par value $0.02 per share. All numbers related to the number of shares and per share amounts of Common Stock, Special Common Stock and Redeemable Common Stock give effect to the two-for-one splits of our Common Stock that were effected in October 2000 and November 1999.

            We own or have rights to various copyrights, trademarks and trade names used in our business including the following: Actimmune® interferon gamma-1b; Activase® (alteplase, recombinant) tissue-plasminogen activator; Avastin™ (bevacizumab) anti-VEGF antibody; Cathflo® Activase® (alteplase for catheter clearance); Herceptin® (trastuzumab) anti-HER2 antibody; Nutropin® (somatropin (rDNA origin) for injection) growth hormone; Nutropin AQ® and Nutropin AQ Pen™ (somatropin (rDNA origin) for injection) liquid formulation growth hormone; Nutropin Depot® (somatropin (rDNA origin) for injectable suspension) encapsulated sustained-release growth hormone; Protropin® (somatrem for injection) growth hormone; Pulmozyme® (dornase alfa, recombinant) inhalation solution; TNKase™ (tenecteplase) single-bolus thrombolytic agent; and Raptiva™ (efalizumab, formerly Xanelim™) anti-CD11a antibody. Rituxan® (rituximab) anti-CD20 antibody is a registered trademark of IDEC Pharmaceuticals Corporation; Tarceva™ (erlotinib) is a trademark of OSI Pharmaceuticals, Inc.; and Xolair™ (omalizumab) anti-IgE antibody is a trademark of Novartis AG. This report also includes other trademarks, service marks and trade names of other companies.

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            Genentech is a leading biotechnology company using human genetic information to discover, develop, manufacture and commercialize biotherapeutics for significant unmet medical needs. Fifteen of the approved products of biotechnology originated from or are based on our science. We manufacture and commercialize 10 biotechnology products directly in the United States. These products are listed below in the "Marketed Products" section. We also license several additional products to other companies. See the "Licensed Products" section below for further information.

            On June 30, 1999, we redeemed all of our outstanding Special Common Stock held by stockholders other than Roche Holdings, Inc. (or Roche) at a price of $20.63 per share in cash with funds deposited by Roche for that purpose. We refer to this event as the "Redemption." As a result, on that date, Roche's percentage ownership of our outstanding Common Stock increased from 65% to 100%. Consequently, under accounting principles generally accepted in the United States, we were required to use push-down accounting to reflect in our financial statements the amounts paid for our stock in excess of our net book value. Push-down accounting required us to record $1,685.7 million of goodwill and $1,499.0 million of other intangible assets onto our balance sheet on June 30, 1999. For more information about push-down accounting, you should read "Redemption of Our Special Common Stock" note in the Notes to Consolidated Financial Statements of Part II, Item 8 of this Form 10-K. Roche subsequently completed public offerings of our Common Stock as described below.

            On July 23, 1999, October 26, 1999, and March 29, 2000, Roche completed public offerings of our Common Stock. We did not receive any of the net proceeds from these offerings. On January 19, 2000, Roche completed an offering of zero-coupon notes that are exchangeable for an aggregate of approximately 13.0 million shares of our Common Stock held by Roche. Roche's percentage ownership of our outstanding Common Stock was 59.8% at December 31, 2002.

            As a result of the Redemption and subsequent public offerings, we amended our certificate of incorporation and bylaws, amended our licensing and marketing agreement with F. Hoffmann-La Roche Ltd (or Hoffmann-La Roche), an affiliate of Roche, and entered into or amended certain agreements with Roche, which are discussed in "Relationship With Roche" of Part II, Item 7 of this Form 10-K.

            We manufacture and commercialize 10 biotechnology products listed below and license several additional products to other companies.

• Herceptin antibody for the treatment of certain patients with metastatic breast cancer whose tumors overexpress the Human Epidermal growth factor Receptor type 2 (or HER2) protein;

• Rituxan antibody which we market together with IDEC Pharmaceuticals Corporation (or IDEC) for the treatment of patients with relapsed or refractory low-grade or follicular, CD20-positive B-cell non-Hodgkin's lymphoma including retreatment, times 8 dosing and bulky disease;

• TNKase single-bolus thrombolytic agent for the treatment of acute myocardial infarction (heart attack);

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• Activase tissue plasminogen activator (or t-PA) for the treatment of acute myocardial infarction, acute ischemic stroke (brain attack) within three hours of the onset of symptoms and acute massive pulmonary embolism (blood clots in the lungs);

• Cathflo Activase tissue plasminogen activator approved for the restoration of function to central venous access devices that have become occluded due to a blood clot;

• Nutropin Depot long-acting growth hormone for the treatment of growth failure associated with pediatric growth hormone deficiency;

• Nutropin AQ liquid formulation growth hormone for the same indications as Nutropin;

• Nutropin human growth hormone for the treatment of growth hormone deficiency in children and adults, growth failure associated with chronic renal insufficiency prior to kidney transplantation and short stature associated with Turner syndrome;

• Protropin growth hormone for the treatment of inadequate endogenous growth hormone secretion, or growth hormone deficiency, in children; and

• Pulmozyme inhalation solution for the treatment of cystic fibrosis.

            We receive royalties on sales of MabThera® (rituximab), Pulmozyme and Herceptin outside of the United States, on sales of human growth hormone products, Rituxan, Herceptin, Pulmozyme, Activase and TNKase in Canada and on sales of Pulmozyme and Herceptin in Japan from Hoffmann-La Roche. We receive royalties from other companies on sales of growth hormone products within the United States and outside of the United States, on sales of t-PA outside of the United States and Canada, and on sales of tenecteplase outside of the United States, Canada and Japan. We also receive worldwide royalties on additional licensed products that are marketed by other companies, see "Licensed Products" below for further information. A number of these products originated from our technology.

Herceptin:  Herceptin is approved in the United States for use as a first-line therapy in combination with Taxol® (paclitaxel), a product made by Bristol-Myers Squibb Company (or Bristol-Myers) and others and as a single agent in second- and third-line therapy in patients with metastatic breast cancer who have tumors that overexpress the HER2 protein.

            Herceptin is the first humanized monoclonal antibody for the treatment of HER2 overexpressing metastatic breast cancer. We have granted Hoffmann-La Roche exclusive marketing rights to Herceptin outside of the United States. Hoffmann-La Roche markets Herceptin for the treatment of HER2-positive metastatic breast cancer in Europe and Japan. We receive royalties from Hoffmann-La Roche for these European and Japanese Herceptin product sales.

Rituxan:  Rituxan, or rituximab, is approved in the United States for the treatment of relapsed or refractory low-grade or follicular, CD20-positive B-cell non-Hodgkin's lymphoma, a cancer of the immune system, including retreatment, times 8 dosing and bulky disease. We co-developed Rituxan with IDEC from whom we license Rituxan. Rituxan was the first monoclonal antibody approved in the United States to treat cancer. We jointly promote Rituxan with IDEC in the United States. Under an agreement with us, Hoffmann-La Roche markets Rituxan in Canada and is responsible for marketing rituximab under the trademark MabThera in the rest of the world, excluding Japan. Hoffmann-La Roche pays us royalties and cost plus a mark-up on the supply of rituximab. We receive net sales of MabThera from Zenyaku Kogyo Co., Ltd., a pharmaceutical company that markets MabThera in Japan in conjunction with Hoffmann-La Roche and its Japanese subsidiary, Chugai, through a separate marketing arrangement with Zenyaku.

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Activase, TNKase and Cathflo Activase:  Tissue plasminogen activator (or t-PA) is an enzyme that is produced naturally by the body to dissolve blood clots. However, when a blood clot obstructs blood flow in the coronary artery and causes a heart attack, the body is unable to produce enough t-PA to dissolve the clot rapidly enough to prevent damage to the heart. Activase, a recombinant form of t-PA, is approved for marketing in the United States for the treatment of acute myocardial infarction (heart attack), for use in the treatment of acute pulmonary embolism (blood clots in the lungs) and for the treatment of acute ischemic stroke or brain attack (blood clots in the brain) within three hours of symptom onset. TNKase, single-bolus thrombolytic agent, is approved for the treatment for acute myocardial infarction. Cathflo Activase, approved for the restoration of function to central venous access devices that have become occluded due to a blood clot, received approval from the U.S. Food and Drug Administration (or FDA) and was launched in September 2001.

            In exchange for royalty payments, we have licensed marketing rights to a recombinant t-PA in Japan to Kyowa Hakko Kogyo Co., Ltd. (or Kyowa) and Mitsubishi Pharmaceutical (or Mitsubishi). Kyowa is marketing a form of a recombinant t-PA under the trademark Activacin® and Mitsubishi is marketing a form of recombinant t-PA under the trademark GRTPA®. In a number of countries outside of the United States, Canada and Japan, we have licensed t-PA marketing and manufacturing rights to Boehringer Ingelheim, GmbH. We have also licensed certain rights to Boehringer Ingelheim regarding sales of TNKase. Boehringer Ingelheim, which markets a recombinant t-PA under the trademark Actilyse®, received regulatory approval from the European commission for sale of Metalyse® (tenecteplase) and also received marketing approval for Metalyse in Switzerland and Australia.

Nutropin Depot:  Nutropin Depot is a long-acting form of our recombinant human growth hormone using ProLease®, an injectable extended-release drug delivery system, which was developed by our partner Alkermes, Inc. This new formulation was designed to reduce the frequency of injections by encapsulating the drug in biodegradable microspheres.

Nutropin AQ:  Nutropin AQ is a liquid formulation of Nutropin (see below) aimed at providing improved convenience in administration. Nutropin AQ is the first and only liquid (aqueous) recombinant human growth hormone product available in the United States. Nutropin AQ was approved for the treatment of growth hormone inadequacy in children, growth hormone failure in children associated with chronic renal insufficiency up to the time of renal transplantation, and short stature associated with Turner syndrome. Nutropin AQ is also approved for the treatment of growth hormone deficiency in adults.

            In September 2002, we entered into an agreement with Beaufour Ipsen under which Beaufour Ipsen has the exclusive right to market Nutropin AQ and Nutropin AQ Pen Cartridge in Europe and the rest of the world, excluding North America and Japan. As part of a strategic alliance in December 1997 with Sumitomo Pharmaceuticals Co., Ltd. (or Sumitomo), we agreed to provide Sumitomo exclusive rights to develop, import and distribute Nutropin AQ and Nutropin Depot in Japan, and in October 2000, we reacquired the rights to Nutropin Depot in Japan.

Nutropin:  Nutropin is a human growth hormone similar to Protropin (see below); however, it does not have the additional N-terminal amino acid, methionine, found in the Protropin chemical structure. Nutropin is approved in the United States for the treatment of growth failure in children associated with chronic renal insufficiency up to the time of renal transplantation. Nutropin is approved for the treatment of growth hormone inadequacy in children and for the treatment of short stature associated with Turner syndrome. Nutropin is also approved for the treatment of growth hormone deficiency in adults.

Protropin:  Protropin is approved for marketing in the United States for the treatment of growth hormone inadequacy in children. We discontinued the manufacture of Protropin at the end of 2002 because physicians are typically initiating therapy with one of the Nutropin family products and the demand for Protropin has declined. We will continue to sell Protropin for the next 12 to 18 months until we deplete our current inventory of Protropin.

            In exchange for royalty payments, we licensed rights to manufacture and market recombinant growth hormone to Pharmacia Corporation, which manufactures and markets recombinant growth hormone under the trademarks Genotropin® (somatropin (rDNA) for injection) and Genotropin MiniQuick®.

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Pulmozyme:  Pulmozyme is approved for marketing in the United States for the treatment of cystic fibrosis.

Actimmune:  Actimmune is approved in the United States for the treatment of chronic granulomatous disease. In return for a royalty on net sales, we have licensed certain U.S. manufacturing, marketing and development rights to interferon gamma, including Actimmune, to Connetics Corporation, which in turn sublicensed all of its rights to InterMune Pharmaceuticals, Inc. (or InterMune). As of January 1, 2002, we no longer manufacture, use or sell Actimmune. We receive royalty payments from Boehringer Ingelheim from the sale of interferon gamma in certain countries outside of the United States, such as Canada, Japan and the People's Republic of China.

            In addition to the royalties mentioned above, we also receive royalties on the following products from the following companies:

            On August 1, 2003, our royalties from Pharmacia will expire and on December 31, 2003, our royalties from Eli Lilly will expire. These expirations are not expected to have a significant impact on our financial position and results of operations.

            Our product development efforts, including those of our collaborative partners, cover a wide range of medical conditions, including cancer, respiratory disorders, cardiovascular diseases, endocrine disorders, and inflammatory and immune problems.

            Below is a summary of products and related stages of development for each product in clinical development:

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            In conjunction with our amended licensing and marketing agreement with Hoffmann-La Roche in July 1999, Hoffmann-La Roche was granted an option until at least 2015 for licenses to use and sell certain of our products in non-U.S. markets (the "Licensing Agreement"). See "Relationship With Roche" of Part II, Item 7 of this Form 10K, for further information.

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            In general, with respect to our products, Hoffmann-La Roche pays us a royalty on aggregate sales outside of the United States. Hoffmann-La Roche has rights to, and pays us royalties for, Canadian sales of human growth hormone products, Rituxan, Herceptin, Pulmozyme, Activase and TNKase, for Japanese sales of Pulmozyme and Herceptin, and for sales of Pulmozyme, Herceptin and MabThera (rituximab) in other countries outside of the United States. We supply the products to Hoffmann-La Roche, and have agreed to supply the products for which Hoffmann-La Roche has exercised its option with respect to those products, for sales outside of the United States. In late September 2002, Hoffmann-La Roche received approval from the European Committee for Proprietary Medicinal Products to manufacture Herceptin at its Penzberg, Germany facility. Starting in 2003, the Penzberg facility will become the primary site for the manufacture of Herceptin to supply the ex-U.S. territories. This will affect our ex-U.S. sales to Hoffmann-La Roche starting in the first quarter of 2003. During 2003, we expect our sales of Herceptin to Hoffmann-La Roche to decline. However, we will continue to receive royalties from their ex-U.S. Herceptin sales.

            In August 2002, we entered into an agreement with Serono S.A. to market Raptiva internationally outside the United States, Japan, and certain other Asian countries. In February 2003, we amended the agreement with Serono to expand Serono's marketing rights to include certain Asian countries other than Japan. Development and marketing rights in the United States remain with us and our U.S. partner XOMA (US) LLC and we retain exclusive marketing rights in Japan. Under the agreement, we and Serono may collaborate on co-developing additional indications of Raptiva and will share certain global development costs. In addition, we have a supply agreement with Serono, under which we have a loss exposure up to a maximum of $10.0 million.

            In the second quarter of 2002, we entered into a manufacturing agreement with Immunex Corporation, a wholly-owned subsidiary of Amgen, to provide Immunex with additional manufacturing capacity for ENBREL® (etanercept) at Genentech's manufacturing facility in South San Francisco, California. As part of the agreement, we are responsible for facility modifications needed to manufacture ENBREL, including the internal labor costs and development production runs. The cost of equipment and outside service costs are reimbursable by Immunex. However, if certain milestones are not met, we are required to reimburse Immunex for up to 45% of the total equipment and outside service costs. Costs associated with development runs are reflected in R&D expense as incurred. Milestones will be paid to us upon the achievement of certain events. If the FDA approves the manufacturing of the product at Genentech, shipment of the product to Immunex would be recorded as product sales based on an agreed upon price with the associated costs reflected in cost of sales.

            We entered into a research collaboration agreement with CuraGen Corporation in November 1997, as amended and restated in March 2000, and agreed to provide a convertible equity loan to CuraGen of up to $21.0 million. In October 1999, CuraGen exercised its right to borrow $16.0 million. Simultaneously, with this draw down, CuraGen repaid the loan by issuing common shares of CuraGen stock valued at $16.0 million. Our remaining commitment to CuraGen on the convertible equity loan is $5.0 million. At December 31, 2002, there were no outstanding loans to CuraGen.

            In December 1997, we entered into a research collaboration agreement with Millennium to develop and commercialize Millennium's MLN-02 (formerly LDP-02). Under the terms of the agreement, we have agreed to provide a convertible equity loan for approximately $15.0 million to fund Phase II development costs. Upon successful completion of Phase II, if Millennium agrees to fund 25% of Phase III development costs, we have agreed to provide a second loan to Millennium for such funding. As of December 31, 2002, there were no outstanding loans to Millennium.

            In April 1996, we entered into a research collaboration agreement with XOMA to develop and commercialize Raptiva. In connection with our collaboration with XOMA, we have agreed to provide a convertible equity loan to XOMA of up to $80.0 million (outstanding at any one time) to fund XOMA's share of development costs for Raptiva through FDA approval, and a cash loan of up to $15.0 million to fund XOMA's share of U.S. marketing and sales costs prior to the date of regulatory approval of Raptiva. As of December 31, 2002, XOMA had an aggregate outstanding loan balance of approximately $60.0 million, of which we have reserved $20.7 million. There is no revenue impact on our statements of operations as it relates to the funding of the loan. However, provisions are recorded when we determine that recoverability of the loan has been impaired.

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            We have a U.S.-based pharmaceutical marketing, sales and distribution organization. Our sales efforts are focused on specialist physicians in private practice or at major medical centers in the United States. In general, our products are sold largely to wholesalers, specialty distributors or directly to hospital pharmacies. We utilize common pharmaceutical company marketing techniques, including sales representatives calling on individual physicians and distributors, advertisements, professional symposia, direct mail, selling initiatives, public relations and other methods.

            Our products are also available at no charge to qualified patients under our uninsured patient programs in the United States. We have established the Genentech Endowment for Cystic Fibrosis to assist cystic fibrosis patients in the United States with obtaining Pulmozyme and the Genentech Access To Care Foundation for all other Genentech products.

            We provide certain customer service programs relating to our products. We maintained a comprehensive wastage replacement program for Activase and TNKase that, subject to specific conditions, provides customers the right to return Activase and TNKase to us for replacement related to patient-related product wastage. We also maintained expired product programs for all our products that, subject to certain specific conditions, provides customers the right to return products to us for replacement or credit for the price paid related to product expiration. We maintain the right to renew, modify or discontinue the above programs.

            As discussed in the "Segment, Significant Customer And Geographic Information" note in the Notes to Consolidated Financial Statements of Part II, Item 8 of this Form 10-K, we had three major customers who individually provided over 10% of our total revenues in at least two of the last three years. Also discussed in the note are material net foreign revenues by country in 2002, 2001 and 2000.

            Raw materials and supplies required for the production of our principal products are generally available from various suppliers in quantities adequate to meet our needs.

            We seek patents on inventions originating from our ongoing research and development (or R&D) activities. Patents, issued or applied for, cover inventions ranging from basic recombinant DNA techniques to processes relating to specific products and to the products themselves. We have either been granted patents or have patent applications pending that relate to a number of current and potential products including products licensed to others. We consider that in the aggregate our patent applications, patents and licenses under patents owned by third-parties are of material importance to our operations. Important legal issues remain to be resolved as to the extent and scope of available patent protection for biotechnology products and processes in the United States and other important markets outside of the United States. We expect that litigation will likely be necessary to determine the validity and scope of certain of our proprietary rights. We are currently involved in a number of patent lawsuits, as either a plaintiff or defendant, and administrative proceedings relating to the scope of protection of our patents and those of others. These lawsuits and proceedings may result in a significant commitment of our resources in the future and, depending on their outcome, may adversely affect the validity and scope of certain of our patent or other proprietary rights. We cannot assure you that the patents we obtain or the unpatented proprietary technology we hold will afford us significant commercial protection.

            In general, we have obtained licenses from various parties that we deem to be necessary or desirable for the manufacture, use or sale of our products. These licenses (both exclusive and non-exclusive) generally require us to pay royalties to the parties on product sales.

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            Our trademarks, Activase, Herceptin, Nutropin Depot, Nutropin AQ, Nutropin, Protropin, Pulmozyme, Rituxan (licensed from IDEC), TNKase, Cathflo, Xolair (licensed from Novartis), Raptiva, Avastin, Nutropin AQ Pen and Tarceva (licensed from OSI) in the aggregate are considered to be of material importance. All are covered by registrations or pending applications for registration in the U.S. Patent and Trademark Office and in other countries.

            Our royalty income for patent licenses, know-how and other related rights amounted to $365.6 million in 2002, $264.5 million in 2001, and $207.2 million in 2000. Royalty expenses were $204.4 million in 2002, $150.4 million in 2001, and $100.3 million in 2000.

            We face competition, and believe significant long-term competition can be expected, from large pharmaceutical companies and pharmaceutical divisions of chemical companies as well as biotechnology companies. This competition can be expected to become more intense as commercial applications for biotechnology products increase. Some competitors, primarily large pharmaceutical companies, have greater clinical, regulatory and marketing resources and experience than we do. Many of these companies have commercial arrangements with other companies in the biotechnology industry to supplement their own research capabilities.

            The introduction of new products or the development of new processes by competitors or new information about existing products may result in price reductions or product replacements, even for products protected by patents. However, we believe our competitive position is enhanced by our commitment to research leading to the discovery and development of new products and manufacturing methods. Other factors that should help us meet competition include ancillary services provided to support our products, customer service, and dissemination of technical information to prescribers of our products and to the health care community, including payers.

            Over the longer term, our and our collaborators' abilities to successfully market current products, expand their usage and bring new products to the marketplace will depend on many factors, including but not limited to the effectiveness and safety of the products, FDA and foreign regulatory agencies' approvals of new products and indications, the degree of patent protection afforded to particular products, and the effect of managed care as an important purchaser of pharmaceutical products.

Herceptin:  Herceptin is the first humanized monoclonal antibody for the treatment of HER2 overexpressing metastatic breast cancer and the second United States approval in this new class of monoclonal antibody biotherapeutic cancer drugs. The first monoclonal antibody biotherapeutic cancer drug was Rituxan. We are aware of other potentially competitive biologic therapies in development.

Rituxan:  Rituxan received designation as a U.S. Orphan Drug by the FDA in 1994 for the treatment of relapsed or refractory low-grade or follicular, CD20-positive B-cell non-Hodgkin's lymphoma. We are aware of other potentially competitive biologic therapies in development. Corixa Corporation filed a revised BLA in 2001 for Bexxar™ (tositumomab and iodine-131 tositumomab) and received a positive review by the FDA's Oncology Drugs Advisory Committee in December 2002. In February 2002, IDEC received approval from the FDA for Zevalin™ (indium-111 ibritumomab and yttrium-90 ibritumomab) for the treatment of relapsed or refractory low grade, follicular, or transformed B-cell non-Hodgkin's lymphoma. Zevalin is used in combination with Rituxan. Both Bexxar and Zevalin are radiolabeled molecules while Rituxan is not. We are also aware of other potentially competitive biologic therapies for non-Hodgkin's lymphoma in development.

Activase, TNKase and Cathflo Activase:  We continue to face competition in the thrombolytic market. Activase has lost market share due to increased competition and switching to TNKase. We could lose additional market share to Centocor Inc.'s Retavase® either alone or in combination with the use of another Centocor product, ReoPro® (abciximab) and to the use of mechanical reperfusion therapies to treat acute myocardial infarction; the resulting adverse effect on sales could be material. Retavase is approved for the treatment of acute myocardial infarction. In addition, the market for thrombolytic therapy has declined due to an increasing use of mechanical reperfusion in lieu

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of thrombolytic therapy for the treatment of acute myocardial infarction compounded by a declining number of ST segment-elevated myocardial infarction patients. In addition, we face potential increased competition in the catheter clearance market from the reintroduction of Abbott Laboratories' Abbokinase® (urokinase) in October 2002. Abbokinase is approved for pulmonary embolism.

Nutropin Depot, Nutropin AQ, Nutropin and Protropin:  Eli Lilly and Company received FDA approval in 1987 to market its growth hormone product for treatment of growth hormone inadequacy in children. Three other companies: Bio-Technology General Corporation (or BTG), Novo Nordisk A/S (or Novo) and Pharmacia-received FDA approval in 1995 to market their growth hormone products in the United States. Novo did not begin distribution in the United States market until the first quarter of 1997 when it launched Norditropin®, a lyophilized formulation. As a result of a patent infringement lawsuit brought by Genentech relating to the process used by BTG to make its growth hormone product, BTG is currently enjoined from selling its product in the U.S. The patent on which that injunction is based will expire in July 2003. Furthermore, BTG has stated publicly that it has developed a new process for making growth hormone product, which may enable BTG to begin selling that product in the U.S. in 2003. A fifth competitor, Serono, Inc., received FDA approval in October 1996 to market its growth hormone product. On June 21, 2000, Novo announced that the FDA approved Norditropin® SimpleXx™, a liquid form of its recombinant somatropin product, for the long-term treatment of children who have growth hormone failure due to inadequate secretion of endogenous growth hormone. In addition, four of our competitors have received approval to market their existing human growth hormone products in the United States for additional indications.

            Nutropin Depot is approved as the first long-acting dosage form of recombinant growth hormone for pediatric growth hormone deficiency. We are aware of other companies developing sustained release forms of growth hormone that may compete with Nutropin Depot.

            In late April 2002, the FDA approved Nutropin AQ Pen Cartridge, a new delivery system for Nutropin AQ. The Nutropin AQ Pen Cartridge was launched on July 10, 2002. Devices for delivery of growth hormone products are becoming an increasingly important component to gaining and maintaining market share. Other companies have developed devices for delivery of growth hormone products that may compete with this product.

Pulmozyme:  Pulmozyme is used for the treatment of cystic fibrosis. We are not aware of any directly competing products in development.

            Regulation by governmental authorities in the United States and other countries is a significant factor in the manufacture and marketing of our products and in ongoing research and product development activities. All of our products require regulatory approval by governmental agencies prior to commercialization. In particular, our products are subject to rigorous preclinical and clinical testing and other premarket approval requirements by the FDA and regulatory authorities in other countries. Various statutes and regulations also govern or influence the manufacturing, safety, labeling, storage, record keeping and marketing of such products. The lengthy process of seeking these approvals, and the subsequent compliance with applicable statutes and regulations, require the expenditure of substantial resources. Any failure by us to obtain or maintain, or any delay in obtaining or maintaining, regulatory approvals could materially adversely affect our business.

            The activities required before a pharmaceutical product may be marketed in the United States begin with preclinical testing. Preclinical tests include laboratory evaluation of product chemistry and animal studies to assess the potential safety and efficacy of the product and its formulations. The results of these studies must be submitted to the FDA as part of an Investigational New Drug Application (or IND), which must be reviewed by the FDA before proposed clinical testing can begin. Typically, clinical testing involves a three-phase process. In Phase I, clinical trials are conducted with a small number of subjects to determine the early safety profile and the pattern of drug distribution and metabolism. In Phase II, clinical trials are conducted with groups of patients afflicted with a specified disease in order to provide enough data to statistically evaluate the preliminary efficacy, optimal dosages and expanded evidence of safety. In Phase III, large scale, multicenter, comparative clinical trials are conducted with patients afflicted with a target disease in order to provide enough data to statistically evaluate the efficacy and

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safety of the product, as required by the FDA. The results of the preclinical and clinical testing of a chemical pharmaceutical product are then submitted to the FDA in the form of a New Drug Application (or NDA), or for a biological pharmaceutical product in the form of a BLA, for approval to commence commercial sales. In responding to a NDA or a BLA, the FDA may grant marketing approval, request additional information or deny the application if it determines that the application does not provide an adequate basis for approval. We can not assure you that any approval required by the FDA will be obtained on a timely basis, if at all.

            Among the conditions for a NDA or a BLA approval, is the requirement that the prospective manufacturer's quality control and manufacturing procedures conform on an ongoing basis with current Good Manufacturing Practices (or GMP). Before approval of a BLA, the FDA will perform a prelicensing inspection of the facility to determine its compliance with GMP and other rules and regulations. In complying with GMP, manufacturers must continue to expend time, money and effort in the area of production and quality control to ensure full compliance. After the establishment is licensed for the manufacture of any product, manufacturers are subject to periodic inspections by the FDA. Any determination by the FDA of manufacturing related deficiencies could materially adversely affect our business.

            The requirements that we must satisfy to obtain regulatory approval by governmental agencies in other countries prior to commercialization of our products in such countries can be as rigorous, costly and uncertain.

            We are also subject to various laws and regulations relating to safe working conditions, clinical, laboratory and manufacturing practices, the experimental use of animals and the use and disposal of hazardous or potentially hazardous substances, including radioactive compounds and infectious disease agents, used in connection with our research. The extent of governmental regulation that might result from any legislative or administrative action cannot be accurately predicted.

            The levels of revenues and profitability of biopharmaceutical companies may be affected by the continuing efforts of government and third-party payers to contain or reduce the costs of health care through various means. For example, in certain foreign markets, pricing or profitability of therapeutic and other pharmaceutical products is subject to governmental control. In the United States there have been, and we expect that there will continue to be, a number of federal and state proposals to implement similar governmental control. While we cannot predict whether any such legislative or regulatory proposals will be adopted, the adoption of such proposals could have a material adverse effect on our business, financial condition and profitability. In addition, in the United States and elsewhere, sales of therapeutic and other pharmaceutical products are dependent in part on the availability of reimbursement to the consumer from third-party payers, such as government and private insurance plans. Government and private third-party payers are increasingly challenging the prices charged for medical products and services, through class action litigation and otherwise. We cannot assure you that any of our products will be considered cost effective and that reimbursement to the consumer will be available or will be sufficient to allow us to sell our products on a competitive and profitable basis.

            A major portion of our operating expenses to date are related to the R&D of products incurred either by us alone or under contracts with our collaborative partners. R&D expenses were $623.5 million in 2002, $526.2 million in 2001, and $489.9 million in 2000. Our R&D efforts have been the primary source of our products. We intend to maintain our strong commitment to R&D as an essential component of our product development effort. Licensed technology developed by outside parties is an additional source of potential products.

            As of December 31, 2002, we had 5,252 employees.

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            We seek to comply with all applicable statutory and administrative requirements concerning environmental quality. We have made, and will continue to make, expenditures for environmental compliance and protection. Expenditures for compliance with environmental laws have not had, and are not expected to have, a material effect on our capital expenditures, results of operation, financial position or competitive position.

            We file electronically with the Securities and Exchange Commission (or SEC) our annual reports on Form 10-K, quarterly reports on Form 10-Q and current reports on Form 8-K pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934. The public may read or copy any materials we file with the SEC at the SEC's Public Reference Room at 450 Fifth Street, NW, Washington, DC 20549. The public may obtain information on the operation of the Public Reference Room by calling the SEC at 1-800-SEC-0330. The SEC maintains an Internet site that contains reports, proxy and information statements, and other information regarding issuers that file electronically with the SEC. The address of that site is http://www.sec.gov.

            You may obtain a free copy of our annual reports on Form 10-K, quarterly reports on Form 10-Q and current reports on Form 8-K and amendments to those reports on the day of filing with the SEC on our website on the World Wide Web at http://www.gene.com, by contacting the Investor Relations Department at our corporate offices by calling (650) 225-1599 or by sending an e-mail message to investor.relations@gene.com. You can direct requests for literature to our literature request line at (800) 488-6519 or on our website.

            Our primary facilities are located in a research and industrial park in South San Francisco, California in both leased and owned properties. We currently occupy 31 buildings for our research and development, manufacturing, marketing and administrative activities. Of the buildings, 18 are owned and 13 are leased. Of the 13 buildings that are leased, 5 buildings are leased pursuant to synthetic off-balance sheet operating lease arrangements. See the "Leases, Commitments and Contingencies" note in the Notes to Consolidated Financial Statements of Part II, Item 8 of this Form 10-K for a discussion of our synthetic lease arrangements. We have made and continue to make improvements to these properties to accommodate our growth. Our buildings include a manufacturing facility of approximately 300,000 square feet in Vacaville, California, a cell culture manufacturing facility of approximately 50,000 square feet and a warehouse of approximately 18,000 square feet under construction in Porrino, Spain. The Spain facility will supplement our existing bulk cell culture production capacity. We also have leases for certain additional office facilities in several locations in the United States.

            We believe our facilities are in good operating condition and that the real property owned or leased are adequate for all present and near term uses. Additional manufacturing capacity may be added to the South San Francisco or the Vacaville sites depending on the success of potential products in clinical trials. We believe any additional facilities can be obtained or constructed with our capital resources.

            We are a party to various legal proceedings, including patent infringement litigation relating to our antibody products, and licensing and contract disputes, and other matters.

            We and the City of Hope Medical Center are parties to a 1976 agreement relating to work conducted by two City of Hope employees, Arthur Riggs and Keiichi Itakura, and patents that resulted from that work, which are referred to as the "Riggs/Itakura Patents." Since that time, Genentech has entered into license agreements with various companies to make, use and sell the products covered by the Riggs/Itakura Patents. On August 13, 1999, the City of Hope filed a complaint against us in the Superior Court in Los Angeles County, California, alleging that we owe royalties to the City of Hope in connection with these license agreements, as well as product license agreements that involve the grant of licenses under the Riggs/Itakura Patents. The complaint stated claims for declaratory relief,

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breach of contract, breach of implied covenant of good faith and fair dealing, and breach of fiduciary duty. On December 15, 1999, we filed our answer to the City of Hope's complaint. The first trial of this suit began on August 28, 2001, in which City of Hope was seeking compensatory damages in the amount of approximately $445 million (including interest) and special damages. On October 24, 2001, the jury hearing the lawsuit announced that it was unable to reach a verdict and on that basis the Court declared a mistrial. City of Hope requested a retrial, and the retrial began on March 20, 2002. On June 10, 2002, the jury voted to award the City of Hope approximately $300 million in compensatory damages. On June 24, 2002, the jury voted to award the City of Hope an additional $200 million in punitive damages. Such amounts were accrued as an expense in the second quarter of 2002 and were included in other long-term liabilities in the consolidated balance sheet at December 31, 2002. On August 22, 2002, the Superior Court denied Genentech's motion for judgment notwithstanding the verdict and motion for a new trial. Accordingly, on September 13, 2002, Genentech filed a notice of appeal of the verdict and damages awards with the California Court of Appeal. The appeal process is ongoing. The amount of cash, if any, to be paid in connection with the City of Hope matter will depend on the outcome of the appeal.

            On June 7, 2000, Chiron Corporation filed a patent infringement suit against us in the U.S. District Court in the Eastern District of California (Sacramento), alleging that the manufacture, use, sale and offer for sale of our Herceptin antibody product infringes Chiron's U.S. Patent No. 6,054,561. This patent was granted on April 25, 2000, and will expire on June 28, 2005, and it relates to certain antibodies that bind to breast cancer cells and/or other cells. Chiron is seeking compensatory damages for the alleged infringement, additional special damages (e.g., for willful infringement), and attorneys' fees and costs. We filed our answer to Chiron's complaint, and in our answer we also stated counterclaims against Chiron. On April 22, 2002, the Court issued its decision ("Markman Order") construing certain aspects of the patent claims that are in dispute. On June 25, 2002, the Court issued several decisions regarding summary judgment motions that previously had been filed by Chiron and us. In those decisions, the Court ruled as a matter of law that Herceptin infringes claims 1 to 25 of Chiron's patent, and also ruled as a matter of law in favor of Chiron on some but not all of Genentech's defenses and counterclaims regarding the alleged invalidity and/or unenforceability of the patent. The trial of this suit began on August 6, 2002, with jury selection and opening statements. Following the first phase of the trial, which related to Genentech's remaining defenses and counterclaims regarding the alleged invalidity of the patent, the jury unanimously found that claims 1 to 25 of Chiron's patent were invalid, and on that basis the Court entered judgment in favor of Genentech. On September 23, 2002, Chiron filed a motion for judgment as a matter of law or for a new trial, and on October 14, 2002, Chiron filed a motion for relief from judgment, in each case seeking to overturn or set aside the jury verdict. On October 23, 2002, the Court denied the first of the motions in its entirety. On November 4, 2002, the Court denied the second motion in its entirety. On November 20, 2002, Chiron filed a notice of appeal with the U.S. Court of Appeals for the Federal Circuit. On December 4, 2002, Genentech filed a notice of cross-appeal with the U.S. Court of Appeals for the Federal Circuit. The appeal process is ongoing.

            On August 12, 2002, the U.S. Patent and Trademark Office (or Patent Office) declared an interference between the Chiron patent involved in the above mentioned lawsuit (U.S. Patent No. 6,054,561) and a patent application exclusively licensed by Genentech from a university relating to anti-HER2 antibodies. An interference proceeding is declared to decide who first made a particular invention where two or more parties claim the same invention, whether the parties' claims are patentable, and consequently who is or is not entitled to a patent on the invention. In declaring this interference, the Patent Office has determined that there is a substantial question as to whether the inventors of the Chiron patent were first to invent and are entitled to this patent. If the Patent Office were to decide that the inventors of the university's patent application were first to invent and that their claims are patentable, a new patent would be issued to the university and the Chiron patent would be revoked. On October 24, 2002, the Patent Office redeclared the interference to include, in addition to the above-referenced Chiron patent and university patent application, a number of patents and patent applications owned by either Chiron or Genentech, including Chiron's U.S. Patent No. 4,753,894 that is also at issue in the separate patent infringement lawsuit described below. On November 27, 2002, the parties filed their respective lists of preliminary motions and prior art to be relied on in the interference. The Patent Office has scheduled a tentative date for a hearing on the preliminary motions for October 15, 2003.

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            On March 13, 2001, Chiron filed another patent infringement lawsuit against us in the U.S. District Court in the Eastern District of California, alleging that the manufacture, use, sale and/or offer for sale of our Herceptin antibody product infringes Chiron's U.S. Patent No. 4,753,894. Chiron is seeking compensatory damages for the alleged infringement, additional special damages, and attorneys' fees and costs. Genentech filed a motion to dismiss this second lawsuit, which was denied. On November 1, 2002, the parties filed a proposed stipulation to stay all proceedings in this lawsuit until (1) the interference involving U.S. Patent No. 4,753,894 is resolved or (2) two years from entry of the proposed stipulation, whichever is sooner. On or about November 13, 2002, the Court entered the stipulation, staying the proceedings as requested by the parties. This lawsuit is separate from and in addition to the Chiron suit mentioned above.

            On July 24, 2002, Green Equity, LLC filed a shareholder derivative lawsuit in the San Francisco Superior Court against Genentech as nominal defendant and against several members of our Board of Directors (the "individual defendants"). The lawsuit is based upon the claims made by the City of Hope in the contract dispute referred to above. The complaint alleges that the individual defendants breached the fiduciary duty they owe to Genentech by causing us to withhold royalty payments allegedly due to the City of Hope and to conceal third-party licenses that allegedly should have been disclosed to the City of Hope. The plaintiff seeks unspecified damages, costs, and attorneys' fees. The defendants have removed the case to federal court and the case is now pending in the U.S. District Court in the Northern District of California (San Francisco). Defendants filed motions to dismiss the lawsuit, and a hearing on the motions is scheduled for February 26, 2003. No answer to the complaint has yet been filed.

            We and Tanox Biosystems, Inc. (or Tanox) are parties to a July 1996 Settlement and Cross-Licensing Agreement relating to the development and manufacture of certain antibody products directed towards immunoglobin E, including Xolair and Hu-901. On February 20, 2002, Tanox filed an amended demand in an ongoing arbitration proceeding between Genentech and Tanox that is being conducted by the American Arbitration Association in San Francisco. In its amended demand, Tanox has claimed breach of the July 1996 Agreement, conversion, tortious interference, unjust enrichment, and unfair competition by Genentech, and requests injunctive relief as well as monetary damages "many times in excess of $100,000,000." On March 14, 2002, Genentech denied all of Tanox's claims, and counterclaimed for breach of contract, theft of trade secrets, misappropriation, breach of confidence, interference with contract, and interference with economic expectancies by Tanox. Genentech requested injunctive relief and monetary damages. On October 16, 2002, Tanox announced that in a dispute between it and Novartis, an arbitration panel ruled that Tanox is not entitled to develop independently the Hu-901 antibody product. The Novartis/Tanox panel also ruled that Tanox is entitled to receive certain know-how from Novartis. Tanox contends in its dispute against Genentech that it is entitled to similar information from Genentech. The effect of the October 16 ruling from the Novartis/Tanox arbitration, if any, on Tanox's claims against Genentech cannot be determined since it has not yet been resolved by the arbitrators in the Tanox/Genentech proceedings. The arbitration hearing began on January 13, 2003 and is ongoing.

            We and Pharmacia AB are parties to a 1978 agreement relating to Genentech's development of recombinant human growth hormone products, under which Pharmacia is obligated to pay Genentech royalties on sales of Pharmacia's growth hormone products throughout the world. Pharmacia filed a Request for Arbitration with the International Chamber of Commerce (or ICC) to resolve several disputed issues between Genentech and Pharmacia under the 1978 agreement. One of the claims made by Pharmacia is for a refund of some of the royalties previously paid to Genentech for sales of Pharmacia's growth hormone products in certain countries. On February 14, 2002, the ICC issued a decision in Genentech's favor on that claim, ruling that no refund of royalties is due to Pharmacia. On August 8, 2002, the ICC issued a further decision in Genentech's favor on all remaining claims that had been made by Pharmacia.

            On May 28, 1999, GlaxoSmithKline plc (or Glaxo) filed a patent infringement lawsuit against us in the U.S. District Court in Delaware. The suit asserted that we infringe four U.S. patents owned by Glaxo. Two of the patents relate to the use of specific kinds of antibodies for the treatment of human disease, including cancer. The other two patents asserted against us relate to preparations of specific kinds of antibodies which are made more stable and the methods by which such preparations are made. After a trial, the jury hearing the lawsuit unanimously found that our Herceptin and Rituxan antibody products do not infringe the patents and therefore that Genentech is not required to

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pay royalties to Glaxo. The jury also unanimously found that all of the patent claims that Glaxo asserted against Genentech were invalid. Glaxo filed an appeal of the jury's verdict with the U.S. Court of Appeals for the Federal Circuit ("CAFC Appeal"). The oral argument of the appeal took place on February 6, 2002. Genentech's claim against Glaxo for inequitable conduct and other related issues remained pending before the District Court.

            On September 14, 2000, Glaxo filed another patent infringement lawsuit against us in the U.S. District Court in Delaware, alleging that we are infringing U.S. Patent No. 5,633,162 owned by Glaxo. The patent relates to specific methods for culturing Chinese Hamster Ovary cells. The complaint failed to specify which of our products or methods of manufacture allegedly infringed that patent. However, the complaint made a general reference to Genentech's making, using and selling "monoclonal antibodies," and so we believed that the suit related to our Herceptin and Rituxan antibody products. We filed our answer to Glaxo's complaint, and in our answer we also stated counterclaims against Glaxo. This lawsuit was separate from and in addition to the Glaxo suit mentioned above.

            In September 2002, we and Glaxo agreed to a settlement of both of the above-referenced lawsuits, pursuant to which we and Glaxo dismissed with prejudice all the claims and/or counterclaims made by each of us in the lawsuits and dismissed with prejudice the CAFC Appeal. The settlement resolved and ended all the patent infringement claims that Glaxo made against Genentech in the above-referenced lawsuits.

            On March 13, 2001, Genentech filed a complaint in the United States District Court in Delaware against Genzyme Corporation seeking a declaratory judgment that Genentech does not infringe Genzyme's U.S. Patent No. 5,344,773 and that Genentech has not breached a 1992 Patent License and Interference Settlement Agreement between Genentech and Genzyme relating to that patent. Genentech was seeking a declaration that Genzyme's patent is not infringed by any Genentech product, that the patent is invalid, that Genzyme be enjoined from further legal action against Genentech regarding the patent, and that Genentech has not breached the 1992 Agreement.

            On or about April 6, 2001, Genzyme filed a complaint in the same court against Genentech alleging that our TNKase product infringes the Genzyme patent and that Genentech is in breach of the 1992 Agreement referred to above. Genzyme's complaint also alleged willful infringement and reckless breach of contract by Genentech. Genzyme was seeking to enjoin Genentech from infringing the patent, and also was seeking compensatory damages for the alleged infringement and breach of contract, additional special damages, and attorneys' fees and costs. In pre-trial proceedings, Genzyme indicated its intention to present evidence in the trial that the compensatory damages for the alleged infringement and breach of contract should equal $41.9 million. Genentech disputed that any damages were owed and also disputed the amount of compensatory damages for which Genzyme indicated an intention to present evidence in the trial.

            In November 2002, we and Genzyme agreed to a settlement of both of the above-referenced lawsuits, pursuant to which we and Genzyme dismissed with prejudice all the claims and/or counterclaims made by each of us in the lawsuits.

            In 2002, we recognized $543.9 million of litigation-related special charges. These special charges were comprised of the City of Hope Medical Center (or City of Hope) litigation judgment in the second quarter of 2002, including accrued interest and costs related to obtaining a surety bond, and certain other litigation-related matters. In conjunction with the City of Hope judgment, we arranged to post a $600.0 million surety bond and as part of this arrangement, we were required to pledge $630.0 million in cash and investments to secure the bond. The $630.0 million cash and investments were classified as restricted cash on our consolidated balance sheet at December 31, 2002. In addition, we accrued $9.1 million of royalty expenses related to the City of Hope judgment, which was reflected in marketing, general and administrative expenses. We expect that we will continue to incur interest charges on the judgment and service fees on the surety bond each quarter through the process of appealing the City of Hope trial results. These special charges represent our estimate of the costs for the current resolution of these matters and are included in other long-term liabilities in the consolidated balance sheet at December 31, 2002. We developed this estimate in consultation with outside counsel handling our defense in these matters and is based upon the facts and circumstances of these matters known to us at that time. The amount of our liability for certain of these matters could exceed or be less than the amount of our current estimate, depending on the outcome of these matters.

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The amount of cash, if any, paid in connection with the City of Hope matter will depend on the outcome of the appeal. See the "Leases, Commitments and Contingencies" note in the Notes to Consolidated Financial Statements of Part II, Item 8 of this Form 10-K for further information regarding our litigations.

            Not applicable.

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            The executive officers of the Company and their respective ages (ages as of December 31, 2002) and positions with the Company are as follows:

*  Members of the Executive Committee of the Company.

            All officers are elected annually by the Board of Directors. There is no family relationship between or among any of the officers or directors.

            Arthur D. Levinson, Ph.D. was appointed Chairman of the Board of Directors in September 1999 and was elected President and Chief Executive Officer and a director of the Company in July 1995. Since joining the Company in 1980, Dr. Levinson has been a Senior Scientist, Staff Scientist and Director of the Company's Cell Genetics Department. Dr. Levinson was appointed Vice President of Research Technology in April 1989, Vice President of Research in May 1990 and Senior Vice President in January 1993. Dr. Levinson was formerly on the editorial boards of "Molecular Biology and Medicine" and "Molecular and Cellular Biology," and is active in the American Society of Microbiology, the New York Academy of Sciences, the American Association for the Advancement of Science, and the American Society for Biochemistry and Molecular Biology. From 1977 to 1980, Dr. Levinson was a Postdoctoral Fellow in the Department of Microbiology at the University of California, San Francisco. In 1977, Dr. Levinson received his Ph.D. in Biochemistry from Princeton University. Dr. Levinson also serves as a member of the Board of Directors of Apple Computer, Inc.

            Susan D. Desmond-Hellmann, M.D. was appointed Executive Vice President, Development and Product Operations in September 1999. She has served as Chief Medical Officer since December 1996. She previously served as Senior Vice President, Development from December 1997 until September 1999, among other positions, since joining Genentech in March 1995 as a Clinical Scientist. Prior to joining Genentech, she held the position of Associate Director at Bristol-Myers Squibb.

            Stephen G. Juelsgaard, J.D. was appointed Executive Vice President in September 2002, Vice President and General Counsel in July 1994 and Secretary in April 1997. He joined Genentech in July 1985 as Corporate Counsel and subsequently served as Senior Corporate Counsel from 1988 to 1990, Chief Corporate Counsel from 1990 to 1993, Vice President, Corporate Law from 1993 to 1994, Assistant Secretary from 1994 to 1997 and Senior Vice President from April 1998 to September 2002.

            Louis J. Lavigne, Jr. was appointed Executive Vice President of Genentech in March 1997 and Chief Financial Officer in August 1988. He previously served as Senior Vice President from July 1994 to March 1997 and as Vice President from July 1986 to July 1994. Mr. Lavigne joined Genentech in July 1982 from Pennwalt Corporation and became Controller in May 1983 and an officer of Genentech in February 1984.

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            Myrtle S. Potter was appointed Executive Vice President, Commercial Operations and Chief Operating Officer in May 2000. Prior to joining Genentech, she held the positions of President of U.S. Cardiovascular/Metabolics from November 1998 to May 2000, Senior Vice President of Sales, U.S. Cardiovascular/Metabolics from March 1998 to October 1998, Group Vice President of Worldwide Medicines Group from February 1997 to February 1998 and Vice President of Strategy and Economics, U.S. Pharmaceutical Group from April 1996 to January 1997 at Bristol-Myers Squibb. Previously, she held the position of Vice President of the Northeast Region Business Group at Merck and Company from October 1993 to March 1996.

            David A. Ebersman was appointed Senior Vice President, Product Operations in May 2001. He joined Genentech in February 1994 as a Business Development Analyst and subsequently served as Manager, Business Development from February 1995 to February 1996, Director, Business Development from February 1996 to March 1998, Senior Director, Product Development from March 1998 to February 1999 and Vice President, Product Development from February 1999 to May 2001. Prior to joining Genentech, he held the position of Research Analyst at Oppenheimer & Company, Inc.

            Robert L. Garnick, Ph.D. was appointed Senior Vice President, Regulatory, Quality and Compliance in February 2001. Previously, he served as Vice President, Regulatory Affairs from February 1998 to February 2001, Vice President, Quality from April 1994 to February 1998, Senior Director, Quality Control from 1990 to 1994 and Director, Quality Control from 1988 to 1990. He joined Genentech in August 1984 from Armour Pharmaceutical, where he held various positions.

            Richard H. Scheller, Ph.D. was appointed Senior Vice President, Research in March 2001. Prior to joining Genentech, he served as Professor of Molecular and Cellular Physiology and of Biological Sciences at Stanford University Medical Center from September 1982 to February 2001 and as an investigator at the Howard Hughes Medical Institute from September 1990 to February 2001. He received his first academic appointment to Stanford University in 1982. He was appointed to the esteemed position of professor of Molecular and Cellular Physiology in 1993 and as an investigator in the Howard Hughes Medical Institute in 1994.

            John M. Whiting was appointed Vice President in January 2001 and Controller and Chief Accounting Officer in October 1997. He previously served as Director, Financial Planning and Analysis from January 1997 to October 1997 and as Director, Operations, Financial Planning and Analysis from December 1996 to January 1997. He also served in a variety of financial positions at Genentech from 1989 to 1996. Prior to joining Genentech, he served as Senior Audit Manager at Arthur Young.

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             See the footnotes labeled "Redemption of Our Special Common Stock," "Relationship With Roche" and "Capital Stock" in the Notes to Consolidated Financial Statements of Part II, Item 8 of this Form 10-K.

      Stock Trading Symbol:  DNA

            Our Common Stock trades on the New York Stock Exchange under the symbol "DNA." No dividends have been paid on the Common Stock. We currently intend to retain all future income for use in the operation of our business and, therefore, do not anticipate paying any cash dividends in the foreseeable future.

            As of December 31, 2002, there were approximately 2,036 stockholders of record of our Common Stock, one of which is Cede & Co., a nominee for Depository Trust Company (or DTC). All of the shares of Common Stock held by brokerage firms, banks and other financial institutions as nominees for beneficial owners are deposited into participant accounts at DTC, and are therefore considered to be held of record by Cede & Co. as one stockholder.

            See the "Capital Stock" note in the Notes to Consolidated Financial Statements of Part II, Item 8 of this Form 10-K for information on our stock repurchases.

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            The following selected consolidated financial information has been derived from the audited consolidated financial statements. The information below is not necessarily indicative of results of future operations, and should be read in conjunction with Item 7, "Management's Discussion and Analysis of Financial Condition and Results of Operations" of this Form 10-K and the consolidated financial statements and related notes thereto included in Item 8 of this Form 10-K in order to fully understand factors that may affect the comparability of the information presented below.

SELECTED CONSOLIDATED FINANCIAL DATA
(in millions, except per share amounts)

___________

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            The preparation of our financial statements in conformity with accounting principles generally accepted in the United States requires management to make judgments, assumptions and estimates that affect the amounts reported in our financial statements and accompanying notes. Actual results could differ materially from those estimates. The following are critical accounting policies important to our financial condition and results of operations presented in the financial statements and require management to make judgments, assumptions and estimates that are inherently uncertain:

            We lease various real properties under operating leases that generally require us to pay taxes, insurance, maintenance and minimum lease payments. Four of our operating leases are commonly referred to as "synthetic leases." A synthetic lease is a form of off-balance sheet financing under which an unrelated third-party funds 100% of the costs for the acquisition and/or construction of the property and leases the asset to a lessee (Genentech), and at least 3% of the third-party funds represent at-risk equity. As the lessee, our synthetic leases are treated as operating leases for accounting purposes and financing leases for tax purposes. We periodically review the fair values of the properties we lease in order to determine potential accounting ramifications. Adverse changes in the fair value of the properties we lease and changes in the equity participation of third-parties could affect the classification of these leases from operating to financing for accounting purposes. In addition, our adoption of the Financial Accounting Standards Board's Interpretation No. 46, "Consolidation of Variable Interest Entities," and the consolidation of our synthetic leases may have a material impact on our financial condition and results of operations. See the "Liquidity and Capital Resources" section below for a more complete discussion of our synthetic leases.

            We are currently involved in certain legal proceedings as discussed in the "Leases, Commitments and Contingencies" note in the Notes to Consolidated Financial Statements of Part II, Item 8 of this Form 10-K. As of December 31, 2002, we have accrued our estimate of the costs for the current resolution of these matters. We developed these estimates in consultation with outside counsel handling our defense in these matters and it is based upon the facts and circumstances of these matters known to us at that time. The amount of our liability for certain of these matters could exceed or be less than the amount of our current estimates, depending on the outcome of these matters.

• We recognize revenue from product sales when there is persuasive evidence that an arrangement exists, delivery has occurred, the price is fixed and determinable, and collectibility is reasonably assured. Allowances are established for estimated uncollectible amounts, product returns and discounts.

• We receive royalties from licensees, which are based on third-party sales of licensed products or technologies. Royalties are recorded as earned in accordance with the contract terms when third-party results can be reliably measured and collectibility is reasonably assured. Royalty estimates are made in advance of amounts collected using historical and forecasted trends.

• Contract revenue for research and development (or R&D) is recorded as earned based on the performance requirements of the contract. Non-refundable license fees for which no further performance obligations exist, and there is no continuing involvement by Genentech, are recognized on the earlier of when the payments are received or when collection is assured.

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            Research and development (or R&D) expenses include related salaries and benefits, clinical trial and related clinical manufacturing costs, contract and other outside service fees, and facilities and overhead costs. R&D expenses consist of independent R&D costs and costs associated with collaborative R&D and in-licensing arrangements. In addition, we fund R&D at other companies and research institutions under agreements, which we can generally terminate at will. R&D expenses also include activities such as product registries and investigator sponsored trials. R&D costs, including some upfront fees and milestones paid to collaborative partners, are expensed as incurred. The timing of upfront fees and milestone payments in the future may cause variability in our future R&D expenses.

            Income tax expense (benefit) is based on pretax financial accounting income (loss) under the liability method. Deferred tax assets and liabilities are determined based on the difference between the financial statement and tax basis of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. Significant estimates are required in determining our provisions (benefit) for income taxes. Various internal and external factors may have favorable or unfavorable effects on our future effective tax rate. These factors include, but are not limited to, changes in tax laws, regulations and/or rates, changing interpretations of existing tax laws or regulations, future levels of R&D spending, future levels of capital expenditures, and changes in overall levels of pretax earnings. We believe that our reserves for these uncertainties are adequate.

            Our inventories are stated at the lower of cost or market. Cost is determined using a weighted-average approach, which approximates the first-in first-out method. If inventory costs exceeds expected market value due to obsolescence or unmarketability, reserves are recorded for the difference between the cost and the market value. These reserves are determined based on significant estimates.

            Inventories consist of currently marketed products and product candidates awaiting regulatory approval, which are capitalized based on management's judgment of probable near term commercialization. We would be required to expense previously capitalized costs related to pre-approval inventory upon a change in such judgment, due to, among other potential factors, a denial or delay of approval by the necessary regulatory bodies. At December 31, 2002, net capitalized inventories related to Xolair and Raptiva, which have not yet received regulatory approval, were $36.0 million.

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            Marketable equity securities and other debt securities are carried at fair value with unrealized gains and losses included in accumulated other comprehensive income in stockholders' equity. If the fair value of a security has declined below its carrying value for each trading day for six consecutive months or if the decline is due to a significant adverse event, the impairment is considered to be other-than-temporary. An other-than-temporary decline in fair value of a debt or equity security of a biotechnology company is written down to its estimated fair value with a charge to marketing, general and administrative expenses. Other-than-temporary declines in fair value of all other short-term or long-term marketable securities are charged against interest income. Some of the factors we consider in determining whether a significant adverse event has occurred with an issuer include, among other things, unfavorable clinical trial results and the prospect for new products, a denial of a product approval by a regulatory body, the termination of a major collaborative partnership and the liquidity position and financing activities of the issuer. The determination of whether a decline in fair value is other-than-temporary requires significant judgment, and can have a material impact on our financial results.

            Nonmarketable equity securities are carried at cost. We periodically monitor the liquidity position and financing activities of the respective issuers to determine if impairment write-downs are necessary. In the event that impairment write-downs are taken and subsequently recovered upon the sale of a security or otherwise, our financial results will be favorably impacted.

RESULTS OF OPERATIONS
(dollars in millions, except per share amounts)

            This discussion of our Results of Operations contains forward-looking statements regarding royalties, sales of Rituxan, cost of sales, Research and Development (or R&D) expenses, Marketing, General and Administrative (or MG&A) expenses, collaboration profit sharing, timing of completion of phases for projects in product development and costs related to the completion of in-process projects. Actual results could differ materially For a discussion of the risks and uncertainties associated with the timing of completion of product development phases, costs related to the completion of in-process projects and R&D expenses, see "The Successful Development of Biotherapeutics is Highly Uncertain," "We May Be Unable to Obtain or Maintain Regulatory Approvals for Our Products," "Difficulties or Delays in Product Manufacturing Could Harm Our Business," "Protecting Our Proprietary Rights Is Difficult and Costly" and "We May Be Unable to Retain Skilled Personnel and Maintain Key Relationships" sections of "Forward-Looking Information and Cautionary Factors That May Affect Future Results" (or "Forward-Looking Information") below; for sales of Rituxan, costs of sales, MG&A and collaboration profit sharing expenses, see all of the foregoing and "We Face Growing and New Competition," "Other Competitive Factors Could Affect Our Product Sales," "The Outcome of, and Costs Relating to, Pending Litigation are Uncertain," "We May Incur Material Product Liability Costs" and "Insurance Coverage is Increasingly More Difficult to Obtain or Maintain" sections of Forward-Looking Information below and for royalties, see "Our Royalty and Contract Revenues Could Decline" section of Forward-Looking Information below.

            Total revenues for 2002 reached $2,719.3 million, a 23% increase from 2001 primarily due to higher product sales, royalties and contract and other revenues, partially offset by lower interest income. Total revenues for 2001 were $2,212.3 million, a 27% increase from 2000 primarily due to higher product sales, royalties and interest income, partially offset by lower contract and other revenues. These revenue changes are further discussed below.

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            Total net product sales were $2,163.6 million in 2002, an increase of 24% from 2001 primarily as a result of higher sales of our bio-oncology products, Rituxan and Herceptin, and higher sales of our growth hormone and Pulmozyme products. Increased sales volume accounted for a 20% increase, or $343.3 million in 2002, and higher sales prices accounted for the remainder of the increase. Total net product sales were $1,742.9 million in 2001, an increase of 36% from 2000 primarily as a result of higher sales of Rituxan and Herceptin and of our growth hormone products. Increased sales volume accounted for a 33% increase, or $422.0 million in 2001, and higher sales prices accounted for the remainder of the increase. Product sales in connection with our licensing agreement with F. Hoffmann-La Roche (or Hoffmann-La Roche) were $117.3 million in 2002, $76.3 million in 2001, and $67.4 million in 2000. See "Relationship With Roche" below for further information about our licensing agreement with Hoffmann-La Roche.

            Net sales of Rituxan were $1,162.9 million in 2002, a 42% increase from 2001, and $818.6 million in 2001, an 84% increase from 2000. The increase in 2002 was primarily due to increased use of the product for the treatment of B-cell non-Hodgkin's lymphoma. The increase was also due to a lesser extent, a price increase in March 2002. The increase in use of the product was for both approved and unapproved uses of the product. The increase in 2001 was primarily due to increased market penetration for the treatment of B-cell non-Hodgkin's lymphoma and chronic lymphocytic leukemia. In addition, sales of Rituxan increased in 2001 and in the last quarter of 2000 due to the announcement at the American Society of Hematology of the results of a study conducted by the Groupe d'Etude des Lymphomes de l'Adulte (or GELA) reporting on the benefits of using Rituxan, combined with standard chemotherapy, for treating aggressive non-Hodgkin's lymphoma. We expect these factors to continue to positively impact Rituxan sales in 2003, however, the rate of sales growth is expected to be more modest than that seen in 2002.

            We co-developed Rituxan with IDEC Pharmaceuticals Corporation (or IDEC) from which we license Rituxan. IDEC and Genentech jointly promote Rituxan in the United States. Hoffmann-La Roche markets rituximab under the tradename MabThera® in the European Union. Hoffmann-La Roche holds marketing rights for Rituxan in Canada and for MabThera outside of the U.S., excluding Japan, and has agreed to pay us royalties and cost plus a mark-up on the product we supply them. We receive net sales of MabThera from Zenyaku Kogyo Co., Ltd., a pharmaceutical company that markets MabThera in Japan in conjunction with Hoffmann-La Roche and its Japanese subsidiary, Chugai, through a separate marketing arrangement with Zenyaku.

            Net sales of Herceptin were $385.2 million in 2002, an 11% increase from 2001, and $346.7 million in 2001, a 26% increase from 2000. The increase in 2002 was primarily due to an increase in first-line use in the metastatic breast cancer market and the extension of the average treatment duration. While there was a price increase on sales of Herceptin in the U.S. in March 2002, this increase was partially offset by a decrease in the price at which we sell the product to Hoffmann-La Roche. The net sales increase in 2001 was primarily due to increased penetration in the

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metastatic breast cancer market. In addition, the increase in 2001 included approximately $19.5 million related to a change in our distribution process for Herceptin. During the fourth quarter of 2001, we began shipping Herceptin to drug wholesaler distributors rather than direct shipment to customers. As is typical with this process, Herceptin was purchased by the wholesalers in order to stock sufficient inventory to assume product distribution. The initial stocking orders resulted in unusually higher sales in the fourth quarter of 2001 that may not be experienced in future periods.

            We have granted Hoffmann-La Roche exclusive marketing rights to Herceptin outside of the United States. Hoffmann-La Roche markets Herceptin for the treatment of HER2-positive metastatic breast cancer in Europe and Japan. We receive royalties from Hoffmann-La Roche for these European and Japanese Herceptin product sales.

            In late September 2002, Hoffmann-La Roche received approval from the European Committee for Proprietary Medicinal Products to manufacture Herceptin at its Penzberg, Germany facility. Starting in 2003, the Penzberg facility will become the primary site for the manufacture of Herceptin to supply the ex-U.S. territories. This will affect our ex-U.S. sales to Hoffmann-La Roche starting in the first quarter of 2003. During 2003, we expect our sales of Herceptin to Hoffmann-La Roche to decline. However, we will continue to receive royalties from their ex-U.S. Herceptin sales. In 2002, ex-U.S. sales of Herceptin to Hoffmann-La Roche were $40.3 million.

            Net sales of our four growth hormone products, Nutropin Depot, Nutropin AQ, Nutropin and Protropin, were $297.2 million in 2002, an increase of 19% from 2001. Net sales were $250.2 million in 2001, an increase of 10% from 2000. The increase in 2002 was primarily due to our focus on new patient starts, dose optimization, higher dosing during puberty and an incremental increase in the length of therapy and, to a lesser extent, a price increase in January 2002. In late April 2002, the U.S. Food and Drug Administration (or FDA) approved Nutropin AQ Pen, a new delivery system for Nutropin AQ. The Nutropin AQ Pen was launched in July 2002. The net sales growth in 2001 primarily reflects an increase in adult new patient starts, patients staying on the product longer and to a lesser extent, the effects of a price increase in January 2001 and an increase in sales of Nutropin Depot. Nutropin Depot is a long-acting dosage form of recombinant growth hormone approved for pediatric growth hormone deficiency.

            Combined net sales of our three thrombolytic products, Activase, TNKase and Cathflo Activase, were $180.2 million in 2002, a decrease of 9% from 2001. Net sales of our three thrombolytic products were $197.1 million in 2001, a decrease of 4% from 2000 on net sales of just two products, Activase and TNKase. The decreases in Activase and TNKase sales in 2002 and 2001 were attributable to the decline in the overall size of the thrombolytic market as a result of increasing use of mechanical reperfusion as well as early intervention with other therapies in the treatment of acute myocardial infarction and preventative therapies. Our sales were also impacted by continued competition from Centocor, Inc.'s Retavase® (reteplase) and its aggressive price discounting. These decreases were offset in part by new sales of Cathflo Activase in 2002. Cathflo Activase received FDA approval and was launched in September 2001. These factors are expected to continue to impact sales of our thrombolytic products in 2003.

            Net sales of Pulmozyme were $138.1 million in 2002, a 12% increase over 2001. This increase primarily reflects an increased focus on aggressive treatment of cystic fibrosis early in the course of the disease and, to a lesser extent, a price increase in December 2001. Net Pulmozyme sales were $123.0 million in 2001, a slight increase over 2000, which primarily reflects fluctuations in distributor ordering patterns.

            Net sales of Actimmune were $7.3 million in 2001 and $3.7 million in 2000. As of January 1999, we no longer sold Actimmune directly in the U.S. We sold packaged drug product at cost plus a mark-up through December 31, 2001 to InterMune Pharmaceuticals, Inc., who holds the U.S. marketing and development rights to interferon gamma, including Actimmune. As of January 1, 2002, we no longer manufacture, use or sell Actimmune.

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            Royalty income was $365.6 million in 2002, an increase of 38% from 2001. Royalty income was $264.5 million in 2001, an increase of 28% from 2000. The increase in 2002 was due to higher third-party sales by various licensees, primarily Hoffmann-La Roche for higher sales of Herceptin, including a one-time milestone (see below), and Rituxan products. The increase was also due to new royalties earned under a patent that was recently issued to Genentech and our collaborator relating to methods using recombinant DNA technology to make antibodies, and gains related to foreign currency exchange rates. The increase in 2001 was primarily due to higher third-party sales by Hoffmann-La Roche and various licensees, offset in part by lower sales by several licensees including one that had been addressing manufacturing issues which had temporarily impacted their ability to manufacture product for sale. Royalty income from Hoffmann-La Roche totaled $152.6 million in 2002, $87.9 million in 2001, and $46.8 million in 2000.

            As part of our licensing and marketing agreement, in the fourth quarter of 2002, we received a one-time royalty milestone of $10.0 million as a result of Hoffmann-La Roche reaching $200.0 million in net sales of Herceptin outside of the U.S.

            We expect that in 2003, the increase in royalty income will be at a slower rate than 2002. This is partially due to the expiry of certain royalties and the one-time Herceptin milestone received in 2002.

            Cash flows from royalty income include revenues denominated in foreign currencies. We currently purchase simple foreign currency put option contracts (or options) to hedge these foreign royalty cash flows. The term of these options is generally one to five years. See the "We Are Exposed to Risks Relating to Foreign Currency Exchange Rates and Foreign Economic Conditions" section of the Forward-Looking Information below for a discussion of market risks related to these financial instruments.

            Contract and other revenues were $88.7 million in 2002, an increase of 19% from 2001. Contract and other revenues were $74.4 million in 2001, a decrease of 54% from 2000. The increase in 2002 was primarily due to higher revenues from collaborators, including Hoffmann-La Roche, a new out-licensing arrangement, and higher gains from the sale of biotechnology equity securities. The decrease in 2001 from 2000 was primarily due to lower gains from the sale of biotechnology equity securities, partially offset by higher contract revenues and the recognition of $10.0 million in gains related to the change in the time value of certain hedging instruments in the first quarter of 2001. (See the "Derivative Financial Instruments" note of the Notes to Consolidated Financial Statements of Part II, Item 8 of this Form 10-K for more information on our derivative and hedging activities.) The increase in the contract revenue component of this line in 2001 was due to the recognition of $21.2 million of revenues from collaborators that were previously recognized then deferred under the Securities and Exchange Commission's Staff Accounting Bulletin No. 101 (or SAB 101), offset in part by lower contract revenues from third-party collaborators.

            Contract revenues from Hoffmann-La Roche, including reimbursement for ongoing development expenses after the option exercise date, totaled $7.6 million in 2002, $5.8 million in 2001, and $3.5 million in 2000. Contract revenues from Novartis AG, including reimbursements for ongoing development expenses, totaled $5.7 million in 2002. We had no such revenues from Novartis in 2001 and 2000.

            We expect quarterly fluctuations in contract and other revenues depending on milestone payments, the number of new contract arrangements, Hoffmann-La Roche's potential opt-ins for products and sales of biotechnology equity securities.

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            Interest income was $101.4 million in 2002, a 22% decrease from 2001. Interest income was $130.5 million in 2001, a 44% increase from 2000. The decrease in 2002 was primarily due to lower portfolio yields and, to a lesser extent, lower average portfolio balances. The lower portfolio balances were primarily due to the repurchase of 18.2 million shares of our common stock at a cost of approximately $692.8 million during 2002. (See the "Capital Stock" note in the Notes to Consolidated Financial Statements of Part II, Item 8 of this Form 10-K.) The increase in 2001 was primarily due to higher average portfolio balances. Our fixed income portfolio includes cash and cash equivalents, short-term and long-term investments, excluding marketable equity securities. Interest income will depend on fluctuations of interest rates, our use of cash for working capital and repurchasing shares of our common stock and potential alliances in 2003.

            Cost of sales (or COS) was $441.6 million in 2002, an increase of 25% from 2001. COS as a percentage of product sales in 2002 was 20%, which was comparable to 2001. COS was $354.5 million in 2001, a decrease of 3% from 2000. COS as a percentage of product sales was 20% in 2001, a decrease from 29% in 2000. The decrease in 2001 from 2000 primarily reflects a decline in the costs recognized on the sale of inventory that was written up at the Redemption due to push-down accounting, lower reserves for nonuseable inventory, a change in the product mix and lower overall costs due to manufacturing efficiencies. The inventory written up at the Redemption was sold by December 31, 2000.

            As a result of Hoffmann-La Roche's Penzberg facility receiving approval in September 2002 to manufacture Herceptin to supply the ex-U.S. territories, our ex-U.S. Herceptin sales to Hoffmann-La Roche will decline starting in the first quarter of 2003. Accordingly, our costs as a percent of sales is expected to decline due to lower ex-U.S. Herceptin sales, which generate lower gross margins.

            COS for products sold to Hoffmann-La Roche totaled $99.1 million in 2002, $63.8 million in 2001, and $56.7 million in 2000.

            Research and development (or R&D) expenses in 2002 were $623.5 million, an increase of 18% from 2001. R&D expenses in 2001 were $526.2 million, an increase of 7% from 2000. The increase in 2002 was largely due to higher clinical development expenses related to products primarily in late-stage development, including Xolair, Raptiva, Avastin and Tarceva, as well as expenses related to rhuFab V2 (for age-related macular degeneration). The increase in 2002 was also due to increased manufacturing of development products, including Avastin, and process implementation for contract manufacturing of ENBREL (under a manufacturing agreement with Immunex described

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below). These increases were offset in part by lower in-licensing expenses. The increase in 2001 was primarily due to higher expenses related to late-stage clinical trials, higher repairs and maintenance expenses, higher reserves for pre-launch commercial inventory, offset in part by lower in-licensing expenses.

            The major components of R&D expenses for 2002, 2001 and 2000 were as follows (in millions):

            R&D is expected to trend higher in 2003 due to increased spending on development and in-licensing activities.

            In-licensing expenses in 2002 included a $4.0 million upfront payment for the purchase of in-process research and development (or IPR&D) under an in-licensing agreement with a collaborator.

            In-licensing expenses in 2001 included $19.0 million in upfront payments for the purchase of IPR&D under in-licensing agreements with collaborators. Of this amount, $15.0 million relates to an upfront payment to OSI Pharmaceuticals, Inc. (or OSI) under an agreement with us, OSI and Hoffmann-La Roche for the global co-development and commercialization of Tarceva for the potential treatment of solid tumor cancers. One of the members of the Board of Directors of OSI is also a member of the Board of Directors of Genentech.

            In-licensing expenses in 2000 included a $25.0 million upfront payment to Actelion Ltd., for the purchase of IPR&D under an agreement with Actelion to develop and co-promote Tracleer in the U.S. for the potential treatment of acute and chronic heart failure. Actelion led the development efforts for Tracleer. In February 2002, Genentech and Actelion announced that the Phase III clinical trial of Tracleer did not meet its primary objective of significantly improving symptoms associated with chronic heart failure. We have discontinued our development efforts in support of Tracleer. In-licensing expenses in 2000 also included a $15.0 million payment for the purchase of IPR&D under an agreement with Actelion for the rights to develop and co-promote Veletri in the U.S. for the potential treatment of acute heart failure. In April 2001, Genentech and Actelion announced that the second pivotal Phase III clinical trial of Veletri did not meet its primary objective of significantly improving symptoms associated with acute heart failure. Actelion is conducting an additional Phase III trial of Veletri in acute heart failure. We have discontinued our development efforts in support of Veletri.

            We determined that the above acquired IPR&D was not yet technologically feasible and that the acquired technology had no future alternative uses.

            Biopharmaceutical products that we develop internally generally take 10 to 15 years (an average of 12 years) to research, develop and bring to market a new prescription medicine in the United States. Drug development in the U.S. is a process that includes several steps defined by the FDA. The process begins with the filing of an Initial Drug Application (or IND) which, if successful, allows opportunity for clinical study of the potential new medicine. Clinical development typically involves three phases of study: Phase I, II, and III, and we have found that it accounts for an average of seven years of a drug's total development time. The most significant costs associated with clinical development are the Phase III trials as they tend to be the longest and largest studies conducted during the drug development process. The successful development of our products is highly uncertain. An estimation of product completion dates and completion costs can vary significantly for each product and are difficult to predict. Various statutes and regulations also govern or influence the manufacturing, safety, labeling, storage, record keeping and marketing of each product. The lengthy process of seeking these approvals, and the subsequent compliance with applicable statutes and regulations, require the expenditure of substantial resources. Any failure by us to obtain, or any delay in obtaining, regulatory approvals could have a material adverse affect on our business. In responding to a New Drug Application (or NDA) or a Biologic License Application (or BLA), the FDA may grant marketing

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approval, request additional information or deny the application if it determines that the application does not provide an adequate basis for approval. We can not assure you that any approval required by the FDA will be obtained on a timely basis, if at all. For additional discussion of the risks and uncertainties associated with completing development of potential products, see "The Successful Development of Biotherapeutics is Highly Uncertain" section of our Forward-Looking Information below.

            Below are a summary of products and the related stages of development for each product in clinical development:

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___________

* Note: For those projects preparing for a Phase, the estimated date of completion refers to the date the project enters the Phase.

            Additionally, in the second quarter of 2002, we entered into a manufacturing agreement with Immunex Corporation, a wholly-owned subsidiary of Amgen, to provide Immunex with additional manufacturing capacity for ENBREL® (etanercept) at Genentech's manufacturing facility in South San Francisco, California. As part of the agreement, we are responsible for facility modifications needed to manufacture ENBREL, including the internal labor costs and development production runs. The cost of equipment and outside service costs are reimbursable by Immunex. However, if certain milestones are not met, we are required to reimburse Immunex for up to 45% of the total equipment and outside service costs. Costs associated with development runs are reflected in R&D expense as incurred. Milestones will be paid to us upon the achievement of certain events. If the FDA approves the manufacturing of the product at Genentech, shipment of the product to Immunex would be recorded as product sales based on an agreed upon price with the associated costs reflected in cost of sales.

            We establish strategic alliances with various companies to gain additional access to potential new products and technologies, and to utilize companies to help develop potential new products. These companies are developing technologies that may fall outside our research focus and through technology exchanges and investments with these companies, we may have the potential to generate new products. As part of certain of these strategic alliances, we have acquired equity or convertible debt securities of such companies. We have also entered into product-specific collaborations to acquire development and marketing rights for potential products as discussed below.

            In August 2002, we entered into an agreement with Serono S.A. to market Raptiva internationally outside the United States, Japan, and certain other Asian countries. In February 2003, we amended the agreement with Serono to expand Serono's marketing rights to include certain Asian countries other than Japan. Development and marketing rights in the United States remain with us and our U.S. partner XOMA (US) LLC and we retain exclusive marketing rights in Japan. Under the agreement, we and Serono may collaborate on co-developing additional indications of Raptiva and will share certain global development costs. In addition, we have a supply agreement with Serono, under which we have a loss exposure up to a maximum of $10.0 million.

            We entered into a research collaboration agreement with CuraGen Corporation in November 1997, as amended and restated in March 2000, and agreed to provide a convertible equity loan to CuraGen of up to $21.0 million. In October 1999, CuraGen exercised its right to borrow $16.0 million. Simultaneously, with this draw down, CuraGen repaid the loan by issuing common shares of CuraGen stock valued at $16.0 million. Our remaining commitment to CuraGen on the convertible equity loan is $5.0 million. At December 31, 2002, there were no outstanding loans to CuraGen.

            In December 1997, we entered into a research collaboration agreement with Millennium to develop and commercialize Millennium's MLN-02 (formerly LDP-02). Under the terms of the agreement, we have agreed to provide a convertible equity loan for approximately $15.0 million to fund Phase II development costs. Upon successful completion of Phase II, if Millennium agrees to fund 25% of Phase III development costs, we have agreed to provide a second loan to Millennium for such funding. As of December 31, 2002, there were no outstanding loans to Millennium.

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            In April 1996, we entered into a research collaboration agreement with XOMA to develop and commercialize Raptiva. In connection with our collaboration with XOMA, we have agreed to provide a convertible equity loan to XOMA of up to $80.0 million (outstanding at any one time) to fund XOMA's share of development costs for Raptiva through FDA approval, and a cash loan of up to $15.0 million to fund XOMA's share of U.S. marketing and sales costs prior to the date of regulatory approval of Raptiva. As of December 31, 2002, XOMA had an aggregate outstanding loan balance of approximately $60.0 million, of which we have reserved $20.7 million. There is no revenue impact on our statements of operations as it relates to the funding of the loan. However, provisions are recorded when we determine that recoverability of the loan has been impaired.

            Marketing, general and administrative (or MG&A) expenses in 2002 increased 21% from 2001. The increase in 2002 was primarily related to higher general and administrative (or G&A) expense. The increase in G&A was primarily due to a $32.5 million increase in royalty expenses associated with higher sales by various licensees, a $15.9 million charge primarily for the redesign of research facilities and the write-off of building improvements and equipment, and a $13.3 million increase in write-downs of certain biotechnology equity securities as a result of other-than-temporary impairment; partially offset by a $16.7 million reversal of reserves primarily related to the repayment of a note from an earlier collaboration for which a reserve had been previously created and a $9.3 million reimbursement of legal costs. Marketing and sales expense was higher by $40.0 million in 2002 as compared to 2001 primarily in support of our bio-oncology and pipeline products, new information technology and increased headcount in support of all products. MG&A expenses in 2001 increased 29% from 2000. The increase in 2001 was largely due to a $65.9 million increase in G&A expense. This increase was due to a $27.5 million increase in write-downs of certain biotechnology equity investments as a result of other than temporary impairment, a $25.1 million increase in royalty expenses and the remaining increase was primarily related to legal and other corporate expenses. Marketing and sales expense was higher by $40.3 million in 2001 primarily in support of our bio-oncology and pipeline products, new information technology and increased headcount in support of all products.

            MG&A expenses are expected to increase in 2003, driven by marketing and sales expense as we prepare for potential product launches in 2003 and 2004.

            Depending on market conditions during 2003, certain of our unhedged equity security investments may become impaired, which could result in additional write-downs of those equity security investments.

            Collaboration profit sharing consists primarily of the net operating profit sharing with IDEC on Rituxan sales and, to a much lesser extent, the sharing of costs with collaborators related to the commercialization of potential future products. Collaboration profit sharing expenses increased to $350.7 million in 2002, a 42% increase from 2001. Collaboration profit sharing expenses increased to $246.7 million in 2001, a 92% increase from 2000. These increases were primarily driven by increased Rituxan profit sharing with IDEC due to higher Rituxan sales.

            Collaboration profit sharing expense is expected to increase in 2003 consistent with our expectations of higher Rituxan sales and the commercialization of potentially new product sales.

            We began recording recurring charges related to the Redemption and push-down accounting in the third quarter of 1999. These charges were $155.7 million in 2002, $321.8 million in 2001, and $375.3 million in 2000. In 2002, the charges were due to the amortization of other intangible assets. In 2001, $317.6 million and in 2000, $364.2 million of the charges were due to the amortization of other intangible assets and goodwill. In 2001, $4.2 million and in 2000, $11.1 million of the charges were due to compensation expense related to alternative arrangements provided at the time of the Redemption for certain holders of some of the unvested options. See also the "Redemption of our Special Common Stock" note in the Notes to Consolidated Financial Statements of Part II, Item 8 of this Form 10-K.

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            On January 1, 2002, we adopted Statement of Financial Accounting Standards (or FAS) 141, "Business Combinations" and FAS 142, "Goodwill and Other Intangible Assets." In accordance with FAS 141 and 142, we discontinued the amortization of goodwill and our trained and assembled workforce intangible asset, which resulted in an increase in reported net income by approximately $157.6 million (or $0.30 per share) in 2002 as compared to the accounting prior to the adoption of FAS 141 and 142. We performed an impairment test of goodwill at transition on January 1, 2002, and an annual impairment test on September 30, 2002, and found no impairment. We will continue to evaluate our goodwill for impairment on an annual basis each September and whenever events and changes in circumstances suggest that the carrying amount may not be recoverable. See also the "Goodwill and Other Intangible Assets" note in the Notes to Consolidated Financial Statements of Part II, Item 8 of this Form 10-K.

            In 2002, we recognized $543.9 million of litigation-related special charges. These special charges were comprised of the City of Hope Medical Center (or City of Hope) litigation judgment in the second quarter of 2002, including accrued interest and costs related to obtaining a surety bond, and certain other litigation-related matters. We expect that we will continue to incur interest charges on the judgment and service fees on the surety bond each quarter through the process of appealing the City of Hope trial results. These special charges represent our estimate of the costs for the current resolution of these matters and are included in other long-term liabilities in the consolidated balance sheet at December 31, 2002. We developed this estimate in consultation with outside counsel handling our defense in these matters and is based upon the facts and circumstances of these matters known to us at that time. The amount of our liability for certain of these matters could exceed or be less than the amount of our current estimate, depending on the outcome of these matters. The amount of cash, if any, to be paid in connection with the City of Hope matter will depend on the outcome of the appeal. See the "Leases, Commitments and Contingencies" note in the Notes to Consolidated Financial Statements of Part II, Item 8 of this Form 10-K for further information regarding our litigations.

            Interest expense has fluctuated depending on the amounts invested and the level of interest capitalized on construction projects. Interest expense, net of amounts capitalized, was related to our 5% convertible subordinated debentures. Interest expense was $0.8 million in 2002, a $4.9 million decrease from 2001. The decrease in 2002 was a result of the repayment of our debentures, which matured on March 27, 2002, and were redeemed in cash. See the "Debt Obligations" note in the Notes to Consolidated Financial Statements of Part II, Item 8 of this Form 10-K for further information regarding these debentures.

            On January 1, 2002, we adopted FAS 141, "Business Combinations" and FAS 142, "Goodwill and Other Intangible Assets." FAS 141 requires that the purchase method of accounting be used for all business combinations initiated after June 30, 2001, and also specifies the criteria for the recognition of intangible assets separately from goodwill. Under the new rules, goodwill is no longer amortized but is subject to an impairment test at least annually. FAS 141 specifically identified assembled workforce as an intangible asset that is not to be recognized apart from goodwill and it was subsumed into goodwill on January 1, 2002. Other intangible assets that meet the new criteria continue to be amortized over their useful lives.

            In accordance with FAS 141 and 142, we discontinued the amortization of goodwill and our trained and assembled workforce intangible asset, which resulted in an increase in reported net income by approximately $157.6

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million (or $0.30 per share) in 2002, as compared to the accounting prior to the adoption of FAS 141 and 142. See also the "Goodwill and Other Intangible Assets" note in the Notes to Consolidated Financial Statements of Part II, Item 8 of this Form 10-K for further information.

            We adopted FAS 144, "Accounting for the Impairment or Disposal of Long-Lived Assets," on January 1, 2002. FAS 144 supersedes FAS 121, "Accounting for the Impairment of Long-Lived Assets and for Long-Lived Assets to Be Disposed Of." The primary objectives of FAS 144 are to develop one accounting model based on the framework established in FAS 121 for long-lived assets to be disposed of by sale, and to address significant implementation issues. Our adoption of FAS 144 did not have a material impact on our financial position or results of operations.

            In November 2002, the Financial Accounting Standards Board (or FASB) issued Interpretation No. 45 (or FIN 45), "Guarantor's Accounting and Disclosure Requirements for Guarantees, Including Indirect Guarantees of Indebtedness of Others." FIN 45 elaborates on the existing disclosure requirements for most guarantees, including residual value guarantees issued in conjunction with operating lease agreements. It also clarifies that at the time a company issues a guarantee, the company must recognize an initial liability for the fair value of the obligation it assumes under that guarantee and must disclose that information in its interim and annual financial statements. The initial recognition and measurement provisions apply on a prospective basis to guarantees issued or modified after December 31, 2002. The disclosure requirements are effective for financial statements of interim or annual periods ending after December 15, 2002. Our adoption of FIN 45 did not have a material impact on our results of operations and financial position. See the "Leases, Commitments and Contingencies" note in the Notes to Consolidated Financial Statements of Part II, Item 8 of this Form 10-K regarding our disclosures on residual value guarantees and our exposure related to our agreement with Serono S.A.

            In January 2003, the FASB issued Interpretation No. 46 (or FIN 46), "Consolidation of Variable Interest Entities." FIN 46 requires a variable interest entity to be consolidated by a company if that company is subject to a majority of the risk of loss from the variable interest entity's activities or entitled to receive a majority of the entity's residual returns or both. A variable interest entity is a corporation, partnership, trust, or any other legal structures used for business purposes that either (a) does not have equity investors with voting rights or (b) has equity investors that do not provide sufficient financial resources for the entity to support its activities. A variable interest entity often holds financial assets, including loans or receivables, real estate or other property. A variable interest entity may be essentially passive or it may engage in research and development or other activities on behalf of another company. The consolidation requirements of FIN 46 apply immediately to variable interest entities created after January 31, 2003. The consolidation requirements apply to older entities in the first fiscal year or interim period beginning after June 15, 2003. Certain of the disclosure requirements apply to all financial statements issued after January 31, 2003, regardless of when the variable interest entity was established. See the "Leases, Commitments and Contingencies" note in the Notes to Consolidated Financial Statements of Part II, Item 8 of this Form 10-K for expanded disclosures required by FIN 46.

            See also the "Description of Business and Summary of Significant Accounting Policies" note in the Notes to Consolidated Financial Statements of Part II, Item 8 of this Form 10-K for information on our adoption of FAS 141, 142, 144 and the FASB Interpretation on No. 45 and 46.

            We adopted FAS 133, "Accounting for Derivative Instruments and Hedging Activities," on January 1, 2001. Upon adoption, we recorded a $5.6 million charge, net of tax, ($0.01 per share) as a cumulative effect of a change in accounting principle, recognized $6.0 million in gains, net of tax, ($0.01 per share) in contract and other revenues related to certain hedging instruments and increased other comprehensive income by $5.0 million, net of tax, as a result of recording derivative instruments at fair value. See the "Description of Business and Summary of Significant Accounting Policies" note in the Notes to Consolidated Financial Statements of Part II, Item 8 of this Form 10-K for further information on our adoption of FAS 133.

            We adopted the Securities and Exchange Commission's (or SEC) Staff Accounting Bulletin No. 101, "Revenue Recognition in Financial Statements" on January 1, 2000, and recorded a $57.8 million charge (net of tax) as a cumulative effect of a change in accounting principle related to contract revenues recognized in prior periods.

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The related deferred revenue is being recognized over the appropriate terms in each of the effected agreements. For the year ended December 31, 2000, the impact of the change in accounting principle was to increase net loss by $52.6 million (or $0.10 per share) comprised of $57.8 million cumulative effect of an accounting change, net of tax, (or $0.11 per share) net of $5.2 million of the related deferred revenue, net of tax, (or $0.01 per share) that was recognized as revenue during the year ended December 31, 2000.

            The income tax benefit was $34.0 million in 2002 as compared to the income tax provisions of $127.1 million in 2001 and $20.4 million in 2000. The income tax benefit of $34.0 million was due to substantially reduced pretax income, tax credits and the favorable resolution of prior years items. The income tax benefit of $34.0 million in 2002 differed from the income tax provision of $127.1 million in 2001 due primarily to substantially reduced pretax income and the elimination of non-deductible goodwill pursuant to the adoption of FAS 141 and FAS 142 in January 2002. The income tax provision of $127.1 million in 2001 increased over the income tax provision of $20.4 million in 2000 primarily due to increased pretax income before non-deductible goodwill amortization related to the Redemption. The 2001 income tax provision reflects decreased benefit of R&D tax credits, which was offset by prior years items. Prior years items relate principally to changes in estimate resulting from events that provided greater certainty as to the expected outcome of these matters.

            Other factors may have favorable or unfavorable effects upon our effective tax rate in 2003 and subsequent years. These factors include, but are not limited to, interpretations of existing tax laws, changes in tax laws and rates, future levels of R&D spending, future levels of capital expenditures, and changes in overall levels of pretax earnings.

            Net income decreased in 2002 to $63.8 million, or $0.12 per diluted share, from a net income of $150.3 million in 2001, or $0.28 per diluted share. The decrease in 2002 from 2001 primarily reflects the litigation-related special charges, and also reflects increased collaboration profit sharing, R&D, MG&A and COS expenses and decreased interest income. These unfavorable changes were partially offset by increased product sales, royalties and contract and other revenues and decreased recurring charges related to the Redemption.

            Net income increased in 2001 to $150.3 million, or $0.28 per diluted share, from a net loss of ($74.2) million in 2000, or ($0.14) per diluted share. The increase from 2000 primarily reflects higher revenues largely from increased product sales, a decrease in costs related to the sale of inventory written up at the Redemption, a decrease in recurring charges related to the Redemption, and the cumulative effect of an accounting change impact in 2001 related to the adoption of FAS 133 as compared to the adoption of SAB 101 in 2000. These favorable variances were offset in part by increased collaboration profit sharing expenses, higher MG&A, R&D and income tax expenses and a decrease in contract and other revenues.

            At June 30, 1999, the Redemption date, we determined that the acquired in-process technology was not technologically feasible and that the in-process technology had no future alternative uses. In 1990 and 1991 through

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1997, Roche Holdings, Inc. (or Roche) purchased 60% and 5%, respectively, of our outstanding common stock. The push-down effect of Roche's aggregate purchase price is allocated based on Roche's ownership percentages as if the purchases had occurred at the original purchase dates for the 1990 and 1991 through 1997 purchases. Therefore, 65% of the purchase price allocated to IPR&D as of September 7, 1990, or 65% of $770.0 million ($500.5 million) was recorded as an adjustment to additional paid-in capital related to the 1990-1997 acquisitions. The remaining 35% of our outstanding common stock not owned by Roche was purchased in 1999. Accordingly, 35% of $2,150.0 million of total fair value at the Redemption date, or $752.5 million, was expensed on June 30, 1999.

            The amounts of IPR&D were determined based on an analysis using the risk-adjusted cash flows expected to be generated by the products that result from the in-process projects. The analysis included forecasted future cash flows that were expected to result from the progress made on each of the in-process projects prior to the purchase dates. These cash flows were estimated by first forecasting, on a product-by-product basis, total revenues expected from sales of the first generation of each in-process product. A portion of the gross in-process product revenues was then removed to account for the contribution provided by any core technology, which was considered to benefit the in-process products. The net in-process revenue was then multiplied by the project's estimated percentage of completion as of the purchase dates to determine a forecast of net IPR&D revenues attributable to projects completed prior to the purchase dates. Appropriate operating expenses, cash flow adjustments and contributory asset returns were deducted from the forecast to establish a forecast of net returns on the completed portion of the in-process technology. Finally, these net returns were discounted to a present value at discount rates that incorporate both the weighted-average cost of capital (relative to the biotech industry and us) as well as the product-specific risk associated with the purchased IPR&D products. The product-specific risk factors included each product in each phase of development, type of molecule under development, likelihood of regulatory approval, manufacturing process capability, scientific rationale, pre-clinical safety and efficacy data, target product profile and development plan. The discount rates ranged from 16% to 19% for the 1999 valuation and 20% to 28% for the 1990 purchase valuation, all of which represent a significant risk premium to our weighted-average cost of capital.

            The forecast data in the analysis was based on internal product level forecast information maintained by our management in the ordinary course of managing the business. The inputs used by us in analyzing IPR&D were based on assumptions, which we believed to be reasonable but which were inherently uncertain and unpredictable. These assumptions may be incomplete or inaccurate, and no assurance can be given that unanticipated events and circumstances will not occur.

            A brief description of projects that were included in the IPR&D charge is set forth below, including an estimated percentage of completion as of the Redemption date. Projects subsequently added to the research and development pipeline are not included. Except as otherwise noted below, since the Redemption date there have been no significant changes to the phase of development for the projects listed. We do not track all costs associated with research and development on a project-by-project basis. Therefore, we believe a calculation of cost incurred as a percentage of total incurred project cost as of FDA approval is not possible. We estimated, however, that the R&D expenditures that will be required to complete the in-process projects will total at least $410.0 million as of December 31, 2002, as compared to $700.0 million as of the Redemption date. This estimate reflects costs incurred since the Redemption date, discontinued projects, and decreases in cost to complete estimates for other projects, partially offset by an increase in certain cost estimates related to early stage projects and changes in expected completion dates.

            At the Redemption date, we estimated percentage complete data for each project based on weighing of three indicators, as follows:

            PTS:  Probability of technical success (or PTS) is a project level statistic maintained by us on an ongoing basis, which is intended to represent the current likelihood of project success, i.e., FDA approval. This is a quantitative calculation based on the stage of development and the complexity of the project, and it is highly correlated with the project's phase of development. PTS is periodically adjusted to reflect actual experiences over a reasonable period of time.

            Status Compared to Baseline Model:  We developed a baseline model, which allocated percentages of a standard development project to each major phase of the project based on our experience. We then overlaid the time-based status of each project to this baseline model, in order to calculate a percentage complete for each project.

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            Management's Estimate of Percentage Complete:  Below is a list of the projects and their estimated percentage complete included in the IPR&D charge related to the Redemption:

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            We also identified five additional product programs that were at different stages of IPR&D. As of June 30, 1999, the Redemption date, we estimated that these projects would be substantially complete in years 1999 through 2004. The percent completion for each of these additional programs ranged from an estimated 35% to 90%. These projects did not receive material allocations of the purchase price.

            In addition, our IPR&D at the Redemption date included a process technology program. The process technology program included the R&D of ideas and techniques that could improve the bulk production of antibodies, including cell culture productivity, and streamlined and improved recovery processes, and improvements in various areas of pharmaceutical manufacturing. We estimated that the process technology program was approximately 50% complete at the Redemption date. Material cash inflows from significant projects are generally expected to commence within one to two years after the substantial completion date has been reached.

            The significant changes to the projects included in the IPR&D charge since the Redemption date include:

• Nutropin Depot long-acting growth hormone - project received FDA approval in December 1999.

• TNKase second generation t-PA - project received FDA approval in June 2000.

• Anti-IgE antibody - A complete response letter was received from the FDA and an amendment to the BLA seeking approval for allergic asthma in adults and adolescents was submitted in December 2002.

• Pulmozyme - Phase III trial in early stage cystic fibrosis has been completed and the study results were published in December 2001.

• Dornase alfa AERx - project has been discontinued.

• Xubix (sibrafiban) oral IIb/IIIa antagonist - project has been discontinued.

• Activase t-PA for intravenous catheter clearance - project received FDA approval in September 2001.

• Raptiva (efalizumab) - An additional Phase III trial in moderate to severe psoriasis has been completed and did achieve its primary endpoint. A BLA seeking approval for moderate to severe psoriasis was submitted in December 2002.

• Herceptin antibody for adjuvant therapy for breast cancer - project has moved to Phase III.

• Thrombopoietin (or TPO) - There is an agreement with Pharmacia that development efforts will be discontinued.

• Anti-CD18 antibody - project has been discontinued.

• Avastin (bevacizumab) - A Phase III study of Avastin plus Xeloda® (capecitabine) in relapsed metastatic breast cancer patients did not meet its primary efficacy endpoint of progression-free survival. We continue to pursue a broad late-stage clinical development program with Avastin to evaluate its potential use in colorectal, metastatic breast, non-small cell lung and kidney cancer.

• Herceptin antibody for non-small cell lung cancer (or NSCLC) - project has been discontinued for this indication.

• rhuFab V2 (ranibizumab) - We announced positive preliminary data from a Phase Ib/II randomized, single-agent study for patients with the wet form of age-related macular degeneration. Based on these results, and pending discussions with the FDA, we are preparing for Phase III randomized trials.

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• MLN-02 (formerly LDP-02) - Our partner Millennium Pharmaceuticals, Inc. announced a Phase II trial in patients with mild to moderate Crohn's Disease did not meet its primary endpoint. A Phase II trial in patients with ulcerative colitis is ongoing.

            As a result of the Redemption of our Special Common Stock, the then-existing governance agreement between us and Roche terminated, except for provisions relating to indemnification and stock options, warrants and convertible securities. In July 1999, we entered into certain affiliation arrangements with Roche, amended our licensing and marketing agreement with Hoffmann-La Roche, and entered into a tax sharing agreement with Roche as follows:

            Our board of directors consists of two Roche directors, three independent directors nominated by a nominating committee currently controlled by Roche, and one Genentech employee. However, under our bylaws, Roche has the right to obtain proportional representation on our board at any time. Roche intends to continue to allow our current management to conduct our business and operations as we have done in the past. However, we cannot ensure that Roche will not implement a new business plan in the future.

            Except as follows, the affiliation arrangements do not limit Roche's ability to buy or sell our Common Stock. If Roche and its affiliates sell their majority ownership of shares of our Common Stock to a successor, Roche has agreed that it will cause the successor to agree to purchase all shares of our Common Stock not held by Roche as follows:

• with consideration, if that consideration is composed entirely of either cash or equity traded on a U.S. national securities exchange, in the same form and amounts per share as received by Roche and its affiliates; and

• in all other cases, with consideration that has a value per share not less than the weighted-average value per share received by Roche and its affiliates as determined by a nationally recognized investment bank.

            If Roche owns more than 90% of our Common Stock for more than two months, Roche has agreed that it will, as soon as reasonably practicable, effect a merger of Genentech with Roche or an affiliate of Roche.

            Roche has agreed, as a condition to any merger of Genentech with Roche or the sale of our assets to Roche, that either:

• the merger or sale must be authorized by the favorable vote of a majority of non-Roche stockholders, provided no person will be entitled to cast more than 5% of the votes at the meeting; or

• in the event such a favorable vote is not obtained, the value of the consideration to be received by non-Roche stockholders would be equal to or greater than the average of the means of the ranges of fair values for the Common Stock as determined by two nationally recognized investment banks.

            We have agreed not to approve, without the prior approval of the directors designated by Roche:

• any acquisition, sale or other disposal of all or a portion of our business representing 10% or more of our assets, net income or revenues;

• any issuance of capital stock except under certain circumstances; or

• any repurchase or redemption of our capital stock other than a redemption required by the terms of any security and purchases made at fair market value in connection with any of our deferred compensation plans.

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            We have a licensing and marketing agreement with Hoffmann-La Roche and its affiliates granting an option to license, use and sell our products in non-U.S. markets. The major provisions of that agreement include the following:

• Hoffmann-La Roche's option expires in 2015;

• Hoffmann-La Roche may exercise its option to license our products upon the occurrence of any of the following: (1) our decision to file an IND for a product, (2) completion of a Phase II trial for a product or (3) if Hoffmann-La Roche previously paid us a fee of $10.0 million to extend its option on a product, completion of a Phase III trial for that product;

• if Hoffmann-La Roche exercises its option to license a product, it has agreed to reimburse Genentech for development costs as follows:  (1) if exercise occurs at the time an IND is filed, Hoffmann-La Roche will pay 50% of development costs incurred prior to the filing and 50% of development costs subsequently incurred, (2) if exercise occurs at the completion of a Phase II trial, Hoffmann-La Roche will pay 50% of development costs incurred through completion of the trial and 75% of development costs subsequently incurred, (3) if the exercise occurs at the completion of a Phase III trial, Hoffmann-La Roche will pay 50% of development costs incurred through completion of the trial and 75% of development costs subsequently incurred, and $5.0 million of the option extension fee paid by Hoffmann-La Roche to preserve its right to exercise its option at the completion of a Phase III trial will be credited against the total development costs payable to Genentech upon the exercise of the option;

• we agreed, in general, to manufacture for and supply to Hoffmann-La Roche its clinical requirements of our products at cost, and its commercial requirements at cost plus a margin of 20%; however, Hoffmann-La Roche will have the right to manufacture our products under certain circumstances;

• Hoffmann-La Roche has agreed to pay, for each product for which Hoffmann-La Roche exercises its option upon either a decision to file an IND with the FDA or completion of the Phase II trials, a royalty of 12.5% on the first $100.0 million on its aggregate sales of that product and thereafter a royalty of 15% on its aggregate sales of that product in excess of $100.0 million until the later in each country of the expiration of our last relevant patent or 25 years from the first commercial introduction of that product; and

• Hoffmann-La Roche will pay, for each product for which Hoffmann-La Roche exercises its option after completion of the Phase III trials, a royalty of 15% on its sales of that product until the later in each country of the expiration of our relevant patent or 25 years from the first commercial introduction of that product; however, $5.0 million of any option extension fee paid by Hoffmann-La Roche will be credited against royalties payable to us in the first calendar year of sales by Hoffmann-La Roche in which aggregate sales of that product exceed $100.0 million.

            Since the redemption of our Special Common Stock in June 1999, and until Roche completed its second public offering of our Common Stock in October 1999, we were included in Roche's U.S. federal consolidated income tax group. Accordingly, we entered into a tax sharing agreement with Roche. Pursuant to the tax sharing agreement, we and Roche were to make payments such that the net amount paid by us on account of consolidated or combined income taxes was determined as if we had filed separate, stand-alone federal, state and local income tax returns as the common parent of an affiliated group of corporations filing consolidated or combined federal, state and local returns.

            Effective with the consummation of the second public offering on October 26, 1999, we ceased to be a member of the consolidated federal income tax group (and certain consolidated or combined state and local income tax groups) of which Roche is the common parent. Accordingly, our tax sharing agreement with Roche now pertains

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only to the state and local tax returns in which we are consolidated or combined with Roche. We will continue to calculate our tax liability or refund with Roche for these state and local jurisdictions as if we were a stand-alone entity.

            We expect from time to time to issue additional shares of common stock in connection with our stock option and stock purchase plans, and we may issue additional shares for other purposes. Our affiliation agreement with Roche provides, among other things, that we establish a stock repurchase program designed to maintain Roche's percentage ownership interest in our common stock. The affiliation agreement provides that we will repurchase a sufficient number of shares pursuant to this program such that, with respect to any issuance of common stock by Genentech in the future, the percentage of Genentech common stock owned by Roche immediately after such issuance will be no lower than Roche's lowest percentage ownership of Genentech common stock at any time after the offering of common stock occurring in July 1999 and prior to the time of such issuance, except that Genentech may issue shares up to an amount that would cause Roche's lowest percentage ownership to be no more than 2% below the "Minimum Percentage." The Minimum Percentage equals the lowest number of shares of Genentech common stock owned by Roche since the July 1999 offering (to be adjusted in the future for dispositions of shares of Genentech common stock by Roche as well as for stock splits or stock combinations) divided by 509,194,352 (to be adjusted in the future for stock splits or stock combinations), which is the number of shares of Genentech common stock outstanding at the time of the July 1999 offering, as adjusted for the two-for-one splits of Genentech common stock in November 1999 and October 2000. As long as Roche's percentage ownership is greater than 50%, prior to issuing any shares, the affiliation agreement provides that we will repurchase a sufficient number of shares of our common stock such that, immediately after our issuance of shares, Roche's percentage ownership will be greater than 50%. The affiliation agreement also provides that, upon Roche's request, we will repurchase shares of our common stock to increase Roche's ownership to the Minimum Percentage. In addition, Roche will have a continuing option to buy stock from us at prevailing market prices to maintain its percentage ownership interest. On December 31, 2002, Roche's percentage ownership of our common stock was 59.8%, which was 0.4% below the Minimum Percentage.

            We enter into transactions with Roche, Hoffmann-La Roche and its affiliates in the ordinary course of business. In July 1998, we entered into an agreement with Hoffmann-La Roche to provide them with exclusive marketing rights outside of the U.S. for Herceptin. Under the agreement, Hoffmann-La Roche paid us $40.0 million and has agreed to pay us cash milestones tied to future product development activities, to share equally global development costs up to a maximum of $40.0 million and to make royalty payments on product sales. In addition, in the fourth quarter of 2002, Hoffmann-La Roche paid us a one-time royalty milestone of $10.0 million as a result of reaching $200.0 million in net sales of Herceptin outside of the U.S. In 2000, we received $10.0 million from Hoffmann-La Roche to extend its opt-in rights on Avastin. This amount is classified as deferred revenue on our balance sheet.

            Contract revenue from Hoffmann-La Roche, including reimbursement for ongoing development expenses after the option exercise date, totaled $7.6 million in 2002, $5.8 million in 2001 and $3.5 million in 2000. All other revenues from Roche, Hoffmann-La Roche and their affiliates, principally royalties and product sales, totaled $269.9 million in 2002, $164.1 million in 2001 and $114.2 million in 2000.

            During 2001, Novartis AG (or Novartis) acquired 21.3% of the outstanding voting shares of Roche Holding Ltd. During 2002, Novartis acquired an additional 11.4%, bringing its total holdings of the outstanding voting shares of Roche Holding Ltd to 32.7%. As a result of this investment, Novartis is deemed to have an indirect beneficial ownership interest under FAS 57 "Related Party Disclosures" of more than 10% of Genentech's voting stock. During 2000, we entered into an arrangement with our collaboration partner, Novartis, whereby Novartis is required to fund a portion of the cost of our Xolair inventory until the product is approved for marketing by the FDA. This amount is required to be returned to Novartis upon the earlier of regulatory approval of Xolair in the U.S. or the European Union, and has been recorded in other accrued liabilities in our financial statements. The amount payable to Novartis was $37.8 million at December 31, 2002 and $38.4 million at December 31, 2001 (no amounts were

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payable at December 31, 2000). Reimbursements for ongoing development expenses, net of expenses incurred by Novartis, totaled $4.0 million in 2002. In 2000, $3.6 million was payable to Novartis for development and commercial expenses, net of expenses incurred by us. The net expense in 2001 was not material.

            In 2002 and 2001, we used cash generated from operations, income from investments and proceeds from stock issuances to fund operations, purchase marketable securities, make capital and equity investments, redeem our debentures which matured in the first quarter of 2002, and to make stock repurchases. In addition, in 2002, we pledged $630.0 million in cash and investments to secure the surety bond related to the City of Hope Medical Center judgment. (See the "Leases, Commitments and Contingencies" note in the Notes to Consolidated Statements of Part II, Item 8 of this Form 10-K for further information regarding the City of Hope litigation and related surety bond.)

            On October 31, 2001, our Board of Directors authorized a stock repurchase program to repurchase up to 13.0 million shares for an amount not to exceed $625.0 million of our common stock over a 12 month period. On August 15, 2002, our Board of Directors authorized an extension of the stock repurchase program through June 30, 2003, for the repurchase of additional shares for an amount not to exceed an additional $375.0 million of our common stock, increasing the program to a total of approximately 29.6 million shares and an amount not to exceed a total of $1.0 billion. Purchases may be made in the open market or in privately negotiated transactions from time to time at management's discretion. We may also engage in transactions in other Genentech securities in conjunction with the repurchase program, including derivative securities. We also entered into a 10b5-1 insider trading plan on February 8, 2002, to repurchase shares in the open market during those periods each quarter when trading in our stock by insiders is restricted under our insider trading policy. Under its terms, the 10b5-1 plan terminated on October 11, 2002, the date on which a total of 3.0 million shares had been purchased under the plan during the period from February 8, 2002 to October 11, 2002. Due to the extension of the stock repurchase program, another 10b5-1 trading plan was entered into on November 13, 2002, to repurchase shares in the open market during those periods each quarter when trading in our stock is restricted under our insider trading policy. This plan covers 2.5 million shares. Under the stock repurchase program approved by our Board of Directors, we repurchased approximately 18.2 million shares of our common stock in 2002 at a cost of approximately $692.8 million. Of those shares repurchased, the number of shares repurchased under our 10b5-1 trading plans were approximately 3.6 million during 2002. In 2001, we repurchased 900,000 shares of our common stock at a cost of $39.7 million, of which 800,000 shares were repurchased with the approval of our Board of Directors at a cost of $34.0 million prior to our adoption of the stock repurchase program, and 100,000 shares were repurchased at a cost of $5.7 million under the stock repurchase program approved by our Board of Directors. Under the stock repurchase program to date, we repurchased approximately 18.3 million shares of our common stock at a cost of approximately $698.4 million during the period from November 1, 2001, through December 31, 2002.

            Capital expenditures in 2002 were primarily due to the purchase of land, and an increase in the construction of and improvements to manufacturing and R&D facilities. Capital expenditures in 2001 primarily consisted of equipment purchases and improvements to existing manufacturing and service facilities.

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            Our short-term debt at December 31, 2001, consisted of $149.7 million of convertible subordinated debentures, with interest payable at 5%, matured on March 27, 2002. We redeemed the debentures in cash at maturity.

            We believe that our cash, cash equivalents and short-term investments, together with funds provided by operations and leasing arrangements, will be sufficient to meet our foreseeable operating cash requirements including any cash utilized under our stock repurchase program. In addition, we believe we could access additional funds from the debt and, under certain circumstances, capital markets. See also "Our Affiliation Agreement With Roche Could Adversely Affect Our Cash Position" below for factors that could negatively affect our cash position and the "Leases, Commitments and Contingencies" note in the Notes to Consolidated Statements of Part II, Item 8 of this Form 10-K.

            We lease various real properties under operating leases that generally require us to pay taxes, insurance, maintenance and minimum lease payments. Some of our leases have renewable options. Four of our operating leases are commonly referred to as synthetic leases. A synthetic lease represents a form of off-balance sheet financing under which an unrelated third-party funds 100% of the costs of the acquisition and/or construction of the property and leases the asset to a lessee (Genentech), and at least 3% of the third-party funds represent at-risk equity. As the lessee, our synthetic leases are treated as operating leases for accounting purposes and as financing leases for tax purposes. (See also below regarding FASB's, Interpretation No. 46). Under our synthetic lease structures, upon termination or expiration, at our option, we must either purchase the property from the lessor at a predetermined amount that does not constitute a purchase at less than fair market value, sell the real property to a third-party, or renew the lease arrangement. If the property is sold to a third-party at an amount less than the amount financed by the lessor, we have agreed under residual value guarantees to pay the lessor up to an agreed upon percentage of the amount financed by the lessor.

            Three of our synthetic leases were entered into with BNP Paribas Leasing Corporation (or BNP), a wholly-owned subsidiary of BNP Paribas, who leases directly to us various buildings that we occupy in South San Francisco, California. Under one of these BNP leases, we are required to maintain cash collateral of $56.6 million, which we have included in our consolidated balance sheets as restricted cash. In May 2002, we paid the remaining balance on a fourth synthetic lease with BNP and exercised our purchase option to buy the leased property at its estimated fair value of $22.5 million. The purchased property has been included in property, plant and equipment in our consolidated balance sheet as of December 31, 2002.

            The most significant of our synthetic leases relates to our manufacturing facility located in Vacaville, California. In November 2001, we completed a synthetic lease transaction for this facility, which had previously been leased to us under a predecessor synthetic lease. This new synthetic lease is structured differently from our other synthetic leases with BNP. As the lessee, we lease the property from an unrelated special purpose trust (owner/lessor) under an operating lease agreement for five years ending November 2006. Third-party financing is provided in the form of a 3% at-risk equity participation from investors and 97% debt commitment. Investors' equity contributions were equal to or greater than 3% of the fair value of the property at the lease's inception and are required to remain so for the term of the lease. A bankruptcy remote, special purpose corporation (SPC) was formed to fund the debt portion through the issuance of commercial paper notes. The SPC lends the proceeds from the commercial paper to the owner/lessor, who issues promissory notes to the SPC. The SPC loans mature in November 2006. The SPC promissory notes are supported by a credit facility provided by financing institutions and draws are generally available under that credit facility to repay the SPC's commercial paper. The collateral for the SPC loans includes the leased property, and an interest in the residual value guarantee provided by us. As the lessee, at any time during the lease term, we have the option to purchase the property at an amount that does not constitute a purchase at less than fair market value. Our off-balance sheet contingent liability under the residual value guarantees is summarized in the table below.

            Under all of our synthetic leases, Genentech, as the lessee, is also required to maintain certain pre-defined financial ratios and are limited to the amount of additional debt we can assume. In addition, no Genentech officers or employees have any financial interest with regards to these synthetic lease arrangements or with any of the special purpose entities used in these arrangements. In the event of a default, the maximum amount payable under the

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residual value guarantee would equal 100% of the amount financed by the lessor, and our obligation to purchase the leased properties or pay the related residual value guarantees could be accelerated. We believed at the lease's inception and continue to believe that the occurrence of any event of default that could trigger our purchase obligation is remote.

            Future minimum lease payments under operating leases, exclusive of the residual value guarantees, executory costs and sublease income, at December 31, 2002, are as follows (in millions). These minimum lease payments were computed based on interest rates current at that time which are subject to fluctuations in certain market-based interest rates: