UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 10-K

Commission file number 0-31261

AtheroGenics, Inc.

(Exact name of Registrant as specified in its charter)

Securities registered pursuant to Section 12(b) of the Exchange Act:

None

Securities registered pursuant to Section 12(g) of the Exchange Act:

Common Stock, No Par Value

Common Stock Purchase Rights

      Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.    Yes o         No þ

      Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or 15(d) of the Exchange Act.    Yes o         No þ

      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 þ         No o

      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.    o

      Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, or a non-accelerated filer (as defined in Rule 12b-2 of the Act).

Large accelerated filer o                            Accelerated filer þ                            Non-accelerated filer o

      Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes o         No þ

      The aggregate market value of shares of voting stock held by nonaffiliates of the registrant, computed by reference to the closing price of $15.98 as reported on the Nasdaq National Market as of the last business day of AtheroGenics’ most recently completed second fiscal quarter (June 30, 2005), was approximately $168,471,419. AtheroGenics has no nonvoting common equity.

      The number of shares outstanding of the registrant’s common stock, as of March 3, 2006: 39,359,181.

Documents Incorporated by Reference:

      Portions of the proxy statement filed pursuant to Regulation 14A under the Securities Exchange Act of 1934 with respect to the 2006 Annual Meeting of Shareholders are incorporated herein by reference in Part III.

ATHEROGENICS, INC

Form 10-K

INDEX

PART I

Overview

      AtheroGenics is a research-based pharmaceutical company incorporated in the State of Georgia in 1993. We are focused on the discovery, development and commercialization of novel drugs for the treatment of chronic inflammatory diseases, including coronary heart disease, organ transplant rejection, rheumatoid arthritis and asthma. We have developed a proprietary vascular protectant, or v-protectant^®, technology platform to discover drugs to treat these types of diseases. Based on our v-protectant^® platform, we have two drug development programs in clinical trials and are pursuing a number of other preclinical programs.

      AGI-1067 is our v-protectant^® candidate that is most advanced in clinical development. AGI-1067 is designed to benefit patients with coronary heart disease (“CHD”), which is atherosclerosis of the blood vessels of the heart. Atherosclerosis is a common disease that results from inflammation and the buildup of plaque in arterial blood vessel walls. Nearly 13 million people in the United States currently have diagnosed CHD. There are no medications available for physicians to directly treat the underlying chronic inflammation associated with CHD. Instead, physicians treat risk factors, such as high cholesterol and high blood pressure, to slow the progression of the disease. The anti-inflammatory mechanism of AGI-1067 represents a novel, direct therapeutic approach that may be suitable as a chronic treatment for all patients with CHD, including those without traditional risk factors.

      In 2004, we completed a Phase IIb clinical trial called CART-2, a 465-patient study that examined the effect of 12 months of AGI-1067 therapy on atherosclerosis and post-angioplasty Restenosis, which is the re-narrowing of the arteries following angioplasty. Two leading cardiac intravascular ultrasound laboratories independently analyzed the final data from CART-2. The primary endpoint of the trial was a change in coronary atherosclerosis, measured as total plaque volume after a 12-month treatment period compared to baseline values. Combined results of the final analysis from the two laboratories, which were based on an evaluation of intravascular ultrasounds from approximately 230 patients in the study, indicate that AGI-1067 reduced plaque volume by an average of 2.3%, which was statistically significant. Results from the patient group receiving both placebo and “standard of care” indicated a plaque volume measure that was not statistically different from baseline. While the plaque regression observed in the AGI-1067 group exceeded that observed in the standard of care group numerically, the difference did not reach statistical significance, although a trend towards significance was seen in one laboratory’s analysis. An important analysis from the trial, change in plaque volume in the most severely diseased subsegment, showed statistically significant regression from baseline by an average of 4.8%. The results also demonstrated a significant reduction in myeloperoxidase, an inflammatory biomarker that correlates with future cardiovascular events. Overall adverse event rates were similar in the AGI-1067 and standard of care groups, and AGI-1067 was generally well tolerated.

      Based on the results of an End of Phase II meeting with the U.S. Food and Drug Administration (“FDA”), we developed a pivotal Phase III clinical trial protocol to evaluate AGI-1067 for the treatment of atherosclerosis. The Phase III protocol has received a Special Protocol Assessment from the FDA in 2003. A Special Protocol Assessment is written confirmation from the FDA that the protocol is adequately designed to support a New Drug Application (“NDA”) for the drug in the specified treatment area.

      In 2003, we initiated the pivotal Phase III trial Aggressive Reduction of Inflammation Stops Events (“ARISE”), which is being conducted in cardiac centers in the United States, Canada, the United Kingdom and South Africa. ARISE will evaluate the impact of AGI-1067 on important outcome measures such as death due to coronary disease, myocardial infarction, stroke, coronary re-vascularization and unstable angina in patients who have CHD. The study will assess the incremental benefits of AGI-1067 versus the current standard of care therapies in this patient population. As such, all patients in the trial, including those on placebo, will be receiving other appropriate heart disease medications, including statins and other cholesterol-lowering therapies, high blood pressure medications and anti-clotting agents.

      We originally planned to enroll in ARISE 4,000 patients who would be followed for an average of 18 months or until a minimum of 1,160 primary events, or outcome measures, had occurred. In February 2005, we announced that the FDA approved our proposed amendment to the ARISE Phase III clinical trial protocol. The changes to the ARISE clinical trial protocol were intended to enhance the trial as well as to accelerate its pace without affecting the Special Protocol Assessment with the FDA. The changes approved by the FDA included our plan to increase the number of patients in the study to 6,000, eliminate the minimum 12 month follow-up period for patients and decrease the minimum number of primary events to 990. We have completed patient enrollment with a total of 6,127 patients in the study. The revised target number of events will continue to yield greater than 95 percent statistical power to detect a 20 percent difference in clinical events between the study arms. We expect to complete the ARISE trial in the second half of 2006 and then plan to file an NDA with the FDA in early 2007.

      In December 2005, as discussed below, we announced a license and collaboration agreement with AstraZeneca for the global development and commercialization of AGI-1067. Under the terms of the agreement we received an upfront license fee of $50 million and, subject to the achievement of specific milestones including a successful outcome in ARISE, we will be eligible for development and regulatory milestones of up to an aggregate of $300 million. The agreement also provides for progressively demanding sales performance related milestones of up to an additional $650 million in the aggregate. In addition, we will also receive royalties on product sales. AstraZeneca has the right to terminate the license and collaboration agreement at specified periods as further described in “Collaborations” below.

      In October 2005, we entered into a commercial supply agreement with The Dow Chemical Company (“Dow”), a multinational pharmaceutical chemical manufacturing company, for the manufacture of the bulk active ingredient of AGI-1067. The agreement also provides for the manufacture of Probucol USP, the starting material used in the manufacturing process of AGI-1067. Under our joint license and collaboration agreement with AstraZeneca, the manufacturing agreement with Dow will be assigned to AstraZeneca which is responsible for supplying all of the manufacturing, packaging and labeling.

      AGI-1096, our second v-protectant^® candidate, is a novel antioxidant and selective anti-inflammatory agent that is being developed to address the accelerated inflammation of grafted blood vessels, known as transplant arteritis, common in chronic organ transplant rejection. We are working with Astellas Pharma Inc. (“Astellas”) (formerly known as Fujisawa Pharmaceutical Co. Ltd.) to further develop AGI-1096 in preclinical and early-stage clinical trials. In a Phase I clinical trial investigating the safety and tolerability of oral AGI-1096 in combination with Astellas’ tacrolimus (Prograf^®) conducted in healthy volunteers, results indicated that regimens of AGI-1096 administered alone, and concomitant with tacrolimus, were generally well-tolerated, and there were no serious adverse events associated with either regimen during the course of the study. AGI-1096 has also demonstrated pharmacological activity in certain preclinical studies that were conducted as part of the ongoing collaboration. In February 2006, we announced the extension of our collaboration with Astellas to conduct preclinical and early-stage clinical trials, with Astellas funding all development costs during the term of the agreement. Astellas will also retain the exclusive option to negotiate for late stage development and commercial rights to AGI-1096.

      We have also identified additional potential v-protectant^® candidates to treat other chronic inflammatory diseases, including asthma. We are evaluating these v-protectants^® to determine lead drug candidates for clinical development. We plan to develop these compounds rapidly and may seek regulatory fast track status, if available, to expedite development and commercialization. We plan to continue to expand upon our drug discovery efforts and new compounds using functional genomics to identify novel therapeutic gene targets. Functional genomics is the process by which one uses scientific models and techniques to discover and modify genes, measure the consequences of the modifications, and reliably determine the function of those genes.

Business Strategy

      Our objective is to become a leading pharmaceutical company focused on discovering, developing and commercializing novel drugs for the treatment of chronic inflammatory diseases. The key elements of our strategy include the following:

Additionally, we plan to develop a sales force to commercialize those of our other products that we develop to target appropriate patient or physician populations in narrow markets. For example, we plan to establish a 125-person sales force to co-promote AGI-1067 to a narrow segment of specialist physicians.

Inflammation and Disease

      Inflammation is a normal response of the body to protect tissues from infection, injury or disease. The inflammatory response begins with the production and release of chemical agents by cells in the infected, injured or diseased tissue. These agents cause redness, swelling, pain, heat and loss of function. Inflamed tissues generate additional signals that recruit white blood cells to the site of inflammation. White blood cells destroy any infective or injurious agent, and remove cellular debris from damaged tissue. This inflammatory response usually promotes healing but, if uncontrolled, may become harmful.

      The inflammatory response can be either acute or chronic. Acute inflammation lasts at most only a few days. The treatment of acute inflammation, where therapy includes the administration of aspirin and other non-steroidal anti-inflammatory agents, provides relief of pain and fever for patients. In contrast, chronic inflammation lasts weeks, months or even indefinitely and causes tissue damage. In chronic inflammation, the inflammation becomes the problem rather than the solution to infection, injury or disease. Chronically inflamed tissues continue to generate signals that attract white blood cells from the bloodstream. When white blood cells migrate from the bloodstream into the tissue they amplify the inflammatory response. This chronic inflammatory response can break down healthy tissue in a misdirected attempt at repair and healing. Diseases characterized by chronic inflammation include, among others:

      Atherosclerosis is a common cardiovascular disease that results from inflammation and the buildup of plaque in arterial blood vessel walls. Plaque consists of inflammatory cells, cholesterol and cellular debris. Atherosclerosis, depending on the location of the artery it affects, may result in a heart attack or stroke.

      Atherosclerosis of the blood vessels of the heart is called coronary artery disease or heart disease. It is the leading cause of death in the United States, claiming more lives each year than all forms of cancer combined. Recent estimates suggest that over 13 million Americans are diagnosed with some form of atherosclerosis. When atherosclerosis becomes severe enough to cause complications, physicians must treat the complications themselves, including angina, heart attack, abnormal heart rhythms, heart failure, kidney failure, stroke, or obstructed peripheral arteries. Many of the patients with established atherosclerosis are treated aggressively for their associated risk factors, as with statins, which have been repeatedly shown to slow the progression of atherosclerosis and prevent future adverse events such as heart attack, stroke and death. Other risk factors associated with atherosclerosis include elevated triglyceride levels, high blood pressure, smoking, diabetes, obesity and physical inactivity. Many atherosclerosis patients also experience symptoms of angina and/or a history of acute coronary syndromes, such as myocardial infarctions and unstable angina. In addition, most of these patients have high cholesterol, and as a result, the current treatment focuses primarily on cholesterol reduction. Additionally, these patients are routinely treated with anti-hypertensives and anti-platelet drugs to help prevent the formation of blood clots. There are currently no medications available for physicians to treat directly the underlying chronic inflammation of atherosclerosis.

      Organ transplantation takes place when an organ from a donor is surgically removed and placed in a recipient patient whose own organ has failed because of disease or infection. Except for transplants between identical twins, all transplant donors and recipients are immunologically incompatible. This biological incompatibility is a barrier that causes the recipient’s immune system to try to destroy or reject the new organ. A patient’s white blood cells produce special proteins called antibodies that are created specifically to “latch onto” the transplanted organ. While attached to the organ, the antibodies alert the rest of the immune system to attack the organ slowly and continuously. The current treatment for prevention of organ transplant rejection focuses on the use of powerful immunosuppressive drugs such as cyclosporin A, tacrolimus and rapamycin (sirolimus). These drugs, which are initiated during the acute rejection phase, need to be taken continuously after the transplant procedure, often cause side effects, and may fail to prevent long-term rejection of the transplant. Immunosuppressants may also impair the recipient’s immune system in order to reduce the immune response against the transplant. The Scientific Registry of Transplant Recipients reports that even with the use of immunosuppressants, patients run the risk of losing a donated organ during the first three years following transplantation, and roughly 50 percent of patients have functioning organ transplants after approximately ten years.

      Rheumatoid arthritis is a common form of arthritis that is characterized by inflammation of the membrane lining the joint, which causes pain, stiffness, warmth, redness and swelling. The inflamed joint lining, the synovium, can invade and damage bone and cartilage. Inflammatory cells release enzymes that may digest bone and cartilage. The involved joint can lose its shape and alignment, resulting in pain and loss of movement. When the immune system works properly, it is the body’s defense against bacteria, viruses and other foreign cells. In an immune disorder like rheumatoid arthritis, the immune system works improperly and attacks the body’s own joints and other organs. In rheumatoid arthritis, white blood cells move from the bloodstream into the joint tissues. Fluid containing inflamed cells accumulates in the joint. The white cells in the joint tissue and fluid produce many substances, including enzymes, antibodies and other molecules, that attack the joint and can cause damage. In the United States, approximately 2.1 million people have rheumatoid arthritis. The cause of rheumatoid arthritis is not yet known, and the disease differs from person to person. Anyone can get rheumatoid arthritis, including children and the elderly. However, the disease usually begins in the young- to middle-adult years. Among people with rheumatoid arthritis, women outnumber men three-to-one. The disease occurs in all ethnic groups and in all parts of the world.

      Current treatment methods for rheumatoid arthritis focus on relieving pain, reducing inflammation, stopping or slowing joint damage, and improving patient function and well-being, and include non-steroidal anti-inflammatory drugs, corticosteroids and drugs designed to slow the progression of disease, termed disease modifying anti-rheumatic drugs, or DMARDs. DMARDs can cause serious side effects, and include drugs that were originally designed to treat cancer, such as methotrexate. Modern treatments with DMARDs developed by other companies, Enbrel^® (etanercept) and Remicade^®(infliximab), have substantially improved the quality of life for people with rheumatoid arthritis. These drugs prove that blocking the activity of tumor necrosis factor, a molecule that stimulates a broad range of cellular activities implicated in the inflammation process, improves rheumatoid arthritis. However, both of these drugs must be injected and both increase the risk of severe infection.

      Asthma is a common chronic inflammatory disease of the bronchial tubes, which are the airways in the lungs. Asthma is marked by episodic airway attacks that are caused by many stresses, including allergy, cold air, ozone or exercise. Asthma therapy has concentrated on the use of inhaled corticosteroids to reduce chronic inflammation and bronchodilators to provide symptomatic relief. Asthmatic patients, however, continue to experience flare-ups, or exacerbations, that are not prevented nor effectively treated by these medicines.

      Many physicians are only now becoming aware of the key role of chronic inflammation in diverse diseases such as atherosclerosis and asthma for which existing anti-inflammatory treatments are incomplete and limited in use. As more physicians recognize that a wide range of chronic diseases are inflammatory in nature, we believe that these physicians will require safer and more effective anti-inflammatory treatments. We believe that one of these therapeutic approaches will be the administration of drugs designed to block the migration of white blood cells through blood vessel walls into inflamed tissues, unless the inflammation is due to infection.

V-Protectant^® Technology

      We have developed a proprietary v-protectant^® technology platform for the treatment of chronic inflammatory diseases. This platform is based on the work of our scientific co-founders R. Wayne Alexander, M.D., Ph.D. and Russell M. Medford, M.D., Ph.D. In 1993, Drs. Alexander and Medford discovered a novel mechanism within arterial blood vessel walls that could control the excessive accumulation of white blood cells without affecting the body’s ability to fight infection. V-protectant^® technology exploits the observation that the endothelial cells that line the interior wall of the blood vessel play an active role in recruiting white blood cells from the blood to the site of chronic inflammation. V-protectants^® are drugs that block harmful effects of oxygen and other similar molecules, collectively called oxidants. Scientists have known for some time that some oxidants can damage cells, but have more recently determined that these same oxidants may also act as signals to modify gene activity inside cells. This change in gene activity leads to the production of proteins that initiate or maintain inflammation. The protein products of these cells, including an adhesion molecule, called VCAM-1, attract white blood cells to the site of chronic inflammation. We believe that an excess number of VCAM-1 molecules on the surface of cells is a disease state. We also believe that AGI-1067 and other v-protectants^® can act as antioxidants and can block the specific type of inflammation caused by oxidants acting as signals. We believe that v-protectants^® will provide this anti-inflammatory benefit without undermining the body’s ability to protect itself against infection.

Products

      The table below summarizes our therapeutic programs, their target indication or disease and their development status.

      We have established therapeutic programs for product development using lead candidates we select from among our compound libraries. These programs seek to exploit the value of the products early and to expand their use broadly. We continue to test compounds to identify back-up and second-generation product candidates. We are also pursuing other novel discovery targets in chronic inflammation.

      AGI-1067 is our v-protectant^® candidate that is most advanced in clinical development. AGI-1067 is designed to benefit patients with CHD, which is atherosclerosis of the blood vessels of the heart. Atherosclerosis is a common disease that results from inflammation and the buildup of plaque in arterial blood vessel walls. Nearly 13 million people in the United States currently have diagnosed CHD. There are no medications available for physicians to treat directly the underlying chronic inflammation associated with CHD. Instead, physicians treat risk factors, such as high cholesterol and high blood pressure, to slow the progression of the disease. The anti-inflammatory mechanism of AGI-1067 represents a novel, direct therapeutic approach that may be suitable as a chronic treatment for all patients with CHD, including those without traditional risk factors.

      We completed a 305-patient Phase II clinical trial of AGI-1067 called Canadian Antioxidant Restenosis Trial (“CART-1”) in May 2001. Results from the trial showed that the study met its primary endpoint, which was improvement in the size of the luminal area, or coronary artery opening, as measured by intravascular ultrasound six months after angioplasty, with statistical significance. CART-1 data also showed that after only six weeks of therapy, there was an apparent anti-atherosclerotic effect in blood vessels adjacent to the angioplasty site, but not involved in the angioplasty. In the trial, AGI-1067 was well tolerated, with no increase in serious adverse events versus placebo.

      In 2004, we completed a Phase IIb clinical trial called CART-2, a 465-patient study that examined the effect of 12 months of AGI-1067 therapy on atherosclerosis and post-angioplasty restenosis. Two leading cardiac intravascular ultrasound laboratories independently analyzed the final data from CART-2. The primary endpoint of the trial was a change in coronary atherosclerosis, measured as total plaque volume after a 12-month treatment period compared to baseline values. Combined results of the final analysis from the two laboratories, which were based on an evaluation of intravascular ultrasounds from approximately 230 patients in the study, indicate that AGI-1067 reduced plaque volume by an average of 2.3%, which was statistically significant. Results from the patient group receiving both placebo and “standard of care” indicated a plaque volume measure that was not statistically different from baseline. While the plaque regression observed in the AGI-1067 group exceeded that observed in the standard of care group numerically, the difference did not reach statistical significance, although a trend towards significance was seen in one laboratory’s analysis. An important analysis from the trial, change in plaque volume in the most severely diseased subsegment, showed statistically significant regression from baseline by an average of 4.8%. The results also demonstrated a significant reduction in myeloperoxidase, an inflammatory biomarker that correlates with future cardiovascular events. Overall adverse event rates were similar in the AGI-1067 and standard of care groups, and AGI-1067 was generally well tolerated.

      Based on the results of an end of Phase II meeting with the FDA, we developed a pivotal Phase III clinical trial protocol to evaluate AGI-1067 for the treatment of atherosclerosis. The Phase III protocol received a special protocol assessment from the FDA in 2003. A special protocol assessment is written confirmation from the FDA that the protocol is adequately designed to support an NDA for the drug in the specified treatment area.

      In 2003, we initiated the pivotal Phase III trial, called ARISE, which is being conducted in cardiac centers in the United States, Canada, the United Kingdom and South Africa. ARISE will evaluate the impact of AGI-1067 on important outcome measures such as death due to coronary disease, myocardial infarction, stroke, coronary re-vascularization and unstable angina in patients who have CHD. The study will assess the incremental benefits of AGI-1067 versus the current standard of care therapies in this patient population. As such, all patients in the trial, including those on placebo, will be receiving other appropriate heart disease medications, including statins and other cholesterol-lowering therapies, high blood pressure medications and anti-clotting agents.

      We originally planned to enroll in ARISE 4,000 patients who would be followed for an average of 18 months or until a minimum of 1,160 primary events, or outcome measures, had occurred. In February 2005, we announced that the FDA approved our proposed amendment to the ARISE Phase III clinical trial protocol. The changes to the ARISE protocol were intended to enhance the trial as well as to accelerate its pace without affecting the Special Protocol Assessment with the FDA. The changes approved by the FDA included our plan to increase the number of patients in the study to 6,000, eliminate the minimum 12 month follow-up period for patients and decrease the minimum number of primary events to 990. We have completed patient enrollment with a total of 6,127 patients in the study. The revised target number of events will continue to yield greater than 95 percent statistical power to detect a 20 percent difference in clinical events between the study arms. We expect to complete the ARISE trial in the second half of 2006 and then plan to file an NDA with the FDA in early 2007.

      In December 2005, we announced a license and collaboration agreement with AstraZeneca for the global development and commercialization of AGI-1067. Under the terms of the agreement, we received an upfront license fee of $50 million and, subject to the achievement of specific milestones including a successful outcome in ARISE, we will be eligible for development and regulatory milestones of up to an aggregate of $300 million. The agreement also provides for progressively demanding sales performance related milestones of up to an additional $650 million in the aggregate. In addition, we will also receive royalties on product sales. AstraZeneca has the right to terminate the license and collaboration agreement at specified periods as further described in “Collaborations” below.

      In October 2005, we entered into a commercial supply agreement with Dow for the manufacture of the bulk active ingredient of AGI-1067. The agreement also provides for the manufacture of Probucol USP, the starting material used in the manufacturing process of AGI-1067. Under our joint license and collaboration agreement with AstraZeneca, the manufacturing agreement with Dow will be assigned to AstraZeneca, which is responsible for supplying all of the manufacturing, packaging and labeling.

      Organ transplant rejection is caused when patients’ immune systems recognize transplanted organs as foreign and, therefore, reject them. Acute rejection occurs soon after transplantation, while chronic rejection may take years. Recent industry sources report there are approximately 200,000 organ transplant recipients in the United States who are at risk of chronic organ transplant rejection. Chronic rejection is a major factor contributing to organ shortage.

      Physicians treat these patients with powerful immunosuppressants to block all immune and inflammatory reactions that could cause organ transplant rejection. These immunosuppressive therapies, however, may place patients at increased risk for infection. The vascular protection provided by our drug candidate may protect organs from rejection beyond the first year without increasing the risk of infection.

      Our second v-protectant^® candidate, AGI-1096, is a novel antioxidant and selective anti-inflammatory agent which is being developed to address the accelerated inflammation of grafted blood vessels, known as transplant arteritis, common in chronic organ transplant rejection. AGI-1096 inhibits the expression of certain inflammatory proteins, including VCAM-1, in endothelial cells lining the inside surfaces of blood vessel walls. We are working with Astellas to further develop AGI-1096 in preclinical and early-stage clinical trials. We have conducted two Phase I clinical trials of AGI-1096, including a trial investigating the safety and tolerability of oral AGI-1096 in combination with Astellas’ tacrolimus (Prograf^®) conducted in healthy volunteers. Results from the trials indicated that regimens of AGI-1096 administered alone, and concomitant with tacrolimus, were generally well-tolerated and there were no serious adverse events associated with either regimen during the course of the study. AGI-1096 has also demonstrated pharmacological activity in certain preclinical studies that were conducted as part of the ongoing collaboration. In February 2006, we announced the extension of our collaboration with Astellas, which will be funding all development costs during the term of the agreement. Astellas will also retain the exclusive option to negotiate for late stage development and commercial rights to AGI-1096.

      We have also identified additional potential v-protectant^® candidates to treat other chronic inflammatory diseases, including rheumatoid arthritis and asthma. Rheumatoid arthritis is a chronic, progressively debilitating inflammatory disease that affects articular, or rotating, joints resulting in significant pain, stiffness and swelling and leads to degradation of the joint tissue. According to the Arthritis Foundation, there are 2.1 million people with rheumatoid arthritis in the United States. Approximately 70 percent of patients with rheumatoid arthritis are women.

      Physicians treat rheumatoid arthritis in a stepwise fashion, starting with the occasional to regular use of anti-inflammatory agents such as aspirin or ibuprofen, and proceeding to treatment with DMARDs, which can potentially be toxic. The newer DMARDs target the modulation of tumor necrosis factor, tissue repair and proliferation. The recent successful introduction of new drugs for rheumatoid arthritis has highlighted both the market potential and the size and scope of the unmet medical need of these patients. These drugs are partially effective and may cause serious side effects.

      According to the Asthma and Allergy Foundation of America, approximately 20 million adults and children in the United States currently suffer from asthma. Current therapies that target the underlying disease include corticosteroids and several classes of drugs that relieve symptoms but are not effective for chronic inflammation. We believe that v-protectants^® may reduce the inflammation associated with chronic asthma.

      We are evaluating these v-protectants^® to determine lead drug candidates for clinical development. We plan to develop these v-protectants^® rapidly and may seek regulatory fast track status, if available, to expedite development and commercialization. We will continue to expand upon our v-protectant^® technology platform using functional genomics to identify novel therapeutic gene targets.

Collaborations

      In December 2005, we announced a license agreement and a co-promotion agreement with AstraZeneca for the global development and commercialization of AGI-1067. Under the terms of the agreement, we received an upfront license fee of $50 million in February 2006 in partial consideration for the licenses and other rights granted in the license agreement. We will be eligible to receive up to an aggregate of $300 million upon achieving certain development and regulatory milestones. We will also be eligible to receive up to an additional $650 million in the aggregate upon achieving progressively demanding sales performance related milestones.

Joint development and management committees have been established and consist of members from each company, who will oversee development, regulatory and marketing activities with respect to AGI-1067, as more fully described below.

      In January 2004, we announced a collaboration with Fujisawa Pharmaceutical Co., Ltd. (“Fujisawa”) to develop AGI-1096 as an oral treatment for the prevention of organ transplant rejection. Under the agreement, we agreed to collaborate with Fujisawa to conduct preclinical and early stage clinical development trials, with Fujisawa funding all development costs during the term of the agreement. Fujisawa received an option to negotiate for late stage development and commercial rights to the compound. In April 2005, Astellas was formed through the merger of Fujisawa and Yamanouchi Pharmaceutical Co., Ltd. In February 2006, we extended the collaboration with Astellas.

Discovery Research Program

      We have built a robust Discovery Research Program using our demonstrated expertise in functional genomics, molecular biology, cell biology, physiology, pharmacology, biochemistry and medicinal chemistry.

      Our Discovery Research Program has four main objectives:

Patents and Intellectual Property

      We have established a patent portfolio of owned and in-licensed patents that cover our lead compounds and their use. It is our goal to pursue both broad and specific patent protection in the key areas of our research and development both in the United States and internationally, and to identify value-added exclusive in-licensing opportunities.

      We have license agreements with Emory University (“Emory”) and The Regents of the University of California covering aspects of our v-protectant^® technology.

      Under the license agreement with Emory (the “Emory License Agreement”), Emory granted to us an exclusive license to make, use and sell methods and products covered by certain patents and patent applications owned by Emory relating generally to the treatment and diagnosis of VCAM-1 related diseases. On August 3, 2005, we amended the Emory License Agreement to provide that Emory will receive a portion of any milestones or royalties received by us from third parties (such as through our joint licensing and collaboration agreement with AstraZeneca) in exchange for a reduced participation in future revenues and the elimination of milestone payments. We must indemnify Emory for all claims and/or losses caused or contributed to by AtheroGenics arising out of our use of the license. We have procured commercial general liability insurance in specified amounts customary in the industry naming Emory as an insured. Under the terms of our collaboration agreement with AstraZeneca, all amounts due under the Emory License Agreement are the responsibility of AstraZeneca.

      The Emory License Agreement will terminate on October 30, 2012; after that date, our payment obligations under the Emory License Agreement will cease, and we will be entitled to continue to use on a non-exclusive basis all inventions, data or other information described and claimed in the licensed patents and the licensed technology. Emory may terminate the agreement if, after Emory gives notice to us, we fail to make a payment, we fail to render progress reports, we incur specified financial problems, we decide to no longer develop licensed products under the agreement, or we breach a material term of the agreement. We may terminate the agreement upon advance notice to Emory, or if Emory violates certain material terms of the agreement.

      Under our license agreement with The Regents of the University of California, we received a license to make, use and sell diagnostic and therapeutic methods and products using monoclonal antibodies in atherosclerosis and other diseases, which are claimed in applicable patent applications owned by The Regents of the University of California in the U.S. and Canada. We must make milestone payments to The Regents of the University of California upon occurrence of various product development events of up to $45,000 for each therapeutic application and $35,000 for each diagnostic application. In addition, we must pay to The Regents of the University of California a percentage of the net revenue we receive from the sale of products covered by the patents and patent applications and from our sublicensing the licensed patents and patent applications. The Regents of the University of California may terminate the agreement upon proper notice for violation of material terms of the agreement. The agreement expires in 2018, when the last patent covered by the license expires. We may terminate the agreement at any time upon prior notice to The Regents of the University of California. We must indemnify The Regents of the University of California for all losses and claims arising out of our use of the license. In addition, we have procured commercial liability insurance in specified amounts customary in the industry naming the University of California as an insured.

      As part of our v-protectant^® technology patent portfolio, we also purchased U.S. Patent No. 5,262,439 under an agreement with Dr. Sampath Parthasarathy. The agreement provides for the payment of a royalty equal to a certain percentage of the gross selling price paid to AtheroGenics by a purchaser of any process, service or product in which any of the claimed inventions of the patent is utilized as a necessary component. These payment obligations will expire upon the last to expire valid claim in the jurisdiction where the patent is enforceable. Under the terms of our collaboration with AstraZeneca, all amounts payable to Dr. Parthasarathy are the responsibility of AstraZeneca.

      Our patent coverage on AGI-1067 is based on patent filings that we own and patent filings exclusively licensed from Emory. We own one issued patent, U.S. Patent No. 5,262,439, which expires in 2012, and related filings in Japan, Canada and Europe that generically cover the compound AGI-1067 as a member of a class of related compounds. We own another patent, U.S. Patent No. 6,147,250, that protects through

2018 the specific compound AGI-1067 and its use to treat VCAM-1 mediated diseases including, among others, atherosclerosis, post-angioplasty restenosis and coronary artery disease. We also own U.S. Patent No. 6,121,319, which covers the use of a class of compounds including AGI-1067 to treat VCAM-1 mediated diseases. Applications corresponding to U.S. Patent No. 6,147,250 and U.S. Patent No. 6,121,319 have also been filed in foreign patent offices. The patents that we have exclusively licensed from Emory include the use of a substance that inhibits a class of oxidant signals to treat diseases mediated by VCAM-1.

      Our patent coverage on AGI-1096 is based on patent filings that we own and patent filings exclusively licensed from Emory. We own U.S. Patent No. 6,617,352 and associated non-U.S. patent filings which describe AGI-1096 and its use to treat disorders mediated by VCAM-1. We also own U.S. Patent No. 6,670,398 which claims methods of using AGI-1096 for treating transplant organ rejection. These patents and any associated non-U.S. counterparts will expire in 2018.

      Certain patent applications in the United States and non-U.S. countries cover the use of a number of compounds identified in our research program to act as v-protectants^®, and specifically for use in treating cardiovascular and inflammatory disease. In addition we have exclusively licensed patents from Emory that cover the use of a class of compounds which act as v-protectants^®.

      In June 2001, we entered into a worldwide exclusive license agreement with the National Jewish Medical and Research Center. Under the agreement, National Jewish granted us an exclusive license under several of its U.S. and foreign patents and patent applications and related technical information to make, use and sell diagnostics and therapeutics for the treatment of human diseases, including inflammation and asthma. Under the terms of the agreement with National Jewish, we may grant sublicenses of our rights to others.

      Under the agreement with National Jewish, we have assumed responsibility for all future costs associated with research and development of products developed from the licensed technology. We have also assumed responsibility for the costs of filing, prosecuting and maintaining the licensed patent rights. We granted National Jewish a warrant to purchase up to 40,000 shares of our common stock at an exercise price of $6.00 per share, subject to a vesting period. Under the agreement, we made an upfront payment in connection with the execution of the agreement and will pay milestone payments to National Jewish upon the achievement of certain clinical and regulatory milestones. Upfront and milestone payments could aggregate up to approximately $800,000. If we fail to meet various performance milestones by certain dates, some or all of the licensed technology will revert to National Jewish. We must also pay a royalty to National Jewish on net sales of licensed products. If we sublicense the licensed technology, we must pay to National Jewish a percentage of the amounts paid to us by the sublicensee.

      We may terminate the license agreement with National Jewish at any time upon at least 90 days prior written notice. If we terminate the agreement in this manner, all licensed patent rights and related technology revert to National Jewish. Either party to the agreement may also terminate it upon a material, uncured breach by the other, or upon the bankruptcy or insolvency of the other. We must indemnify National Jewish for all losses and claims arising out of our use of the license. We will procure commercial liability insurance in amounts customary in the industry when required by the agreement.

      Our patent position, like that of many pharmaceutical companies, is uncertain and involves complex legal and factual questions for which important legal principles are unresolved or unclear. We may not develop or obtain rights to products or processes that are patentable. Even if we do obtain patents, they may not adequately protect the technology we own or in-license. In addition, others may challenge, seek to

invalidate, infringe or circumvent any patents we own or in-license, and rights we receive under those patents may not provide competitive advantages to us.

      Our commercial success will depend in part on our ability to manufacture, use, sell and offer to sell our product candidates and proposed product candidates without infringing patents or other proprietary rights of others. We may not be aware of all patents or patent applications that may impact our ability to make, use or sell any of our product candidates or proposed product candidates. For example, U.S. patent applications do not publish until 18 months from their effective filing date. Further, we may not be aware of published or granted conflicting patent rights. Any conflicts resulting from patent applications and patents of others could significantly reduce the coverage of our patents and limit our ability to obtain meaningful patent protection. If others obtain patents with conflicting claims, we may be required to obtain licenses to these patents or to develop or obtain alternative technology. We may not be able to obtain any licenses or other rights to patents, technology or know-how necessary to conduct our business as described in this report. Any failure to obtain such licenses or other rights could delay or prevent us from developing or commercializing our product candidates and proposed product candidates, which could materially affect our business.

      Litigation or patent interference proceedings may be necessary to enforce any of our patents or other proprietary rights, or to determine the scope and validity or enforceability of the proprietary rights of others. The defense and prosecution of patent and intellectual property claims are both costly and time consuming, even if the outcome is favorable to us. Any adverse outcome could subject us to significant liabilities, require us to license disputed rights from others, or require us to cease selling our future products.

      The United States Patent and Trademark Office has issued to us Certificates of Registration for the trademarks OXYKINE, ATHEROGENICS, AGI and V-PROTECTANT.

      On January 30, 2002, Applied Genetics Incorporated Dermatics filed with the United States Patent and Trademark Office a petition to cancel the trademark “AGI.” Applied Genetics has not requested any monetary damages. We filed an answer to the petition on March 11, 2002. On July 12, 2002, the United States Patent and Trademark Office issued a suspension of the cancellation proceeding to allow the parties to negotiate a settlement. On December 28, 2005 the United States Patent and Trademark Office approved the settlement agreement and the cancellation proceeding was withdrawn.

Manufacturing

      We have entered into arrangements with third party manufacturers for the supply of AGI-1067 bulk drug substance and for the formulated drug product for use in our ongoing and currently planned clinical trials. In addition, we have entered into a commercial supply agreement for production of the bulk active ingredient of AGI-1067 with Dow. The supply agreement also provides for the manufacture, at our option, of Probucol USP, the starting material used in the manufacturing process of AGI-1067. Under our joint license and collaboration agreement with AstraZeneca, the supply agreement with Dow will be assigned to AstraZeneca, which is responsible for all of the AGI-1067 manufacturing, packaging and labeling.

      The suppliers of the bulk drug substance for AGI-1067 operate under current Good Manufacturing Practice guidelines using cost-effective and readily available materials and reliable processes. The starting material used in the manufacturing process of AGI-1067 is Probucol USP, a material that is available from a number of suppliers worldwide. We have sufficient quantities to support development activities for the foreseeable future. Another third party supplier formulates AGI-1067 into the drug product under current Good Manufacturing Practice guidelines. We anticipate that these suppliers will be able to provide sufficient formulated drug product to complete our ongoing and currently planned clinical trials.

      We plan to establish manufacturing agreements with third parties that comply with Good Manufacturing Practice guidelines for bulk drug substance and oral or intravenous formulations of our v-protectant^® product candidates to support both ongoing and planned clinical trials as well as commercial marketing of the products following regulatory approval.

Sales and Marketing

      We plan to collaborate with large pharmaceutical companies to commercialize products that we develop to target patient or physician populations in broad markets. We believe that collaborating with large companies that have significant marketing and sales capabilities provides for optimal penetration into broad markets, particularly those areas that are highly competitive. We have entered into a license and collaboration agreement with AstraZeneca to commercialize AGI-1067. AstraZeneca has significant worldwide sales and marketing capability focused on pharmaceutical products with profiles similar to AGI-1067. Additionally, we plan to develop a sales force to promote our future products to appropriate patient or physician populations in narrow markets. We plan to co-promote AGI-1067 to targeted physician specialists in the U.S. By using our own sales and marketing organization for our products, we believe we can retain a higher percentage of the profits generated from the sale of those products.

Competition

      Developments by others may render our product candidates obsolete or noncompetitive. We face intense competition from other companies with pharmaceutical, biotechnology and medical device companies for establishing relationships for collaborative arrangements with academic and research institutes and for licenses to proprietary technology. These competitors, either alone or in collaboration, may succeed in developing technologies or products that are more effective than ours.

      We believe pharmaceutical, biotechnology and medical device companies, as well as academic and research institutions and government agencies, have drug discovery and development programs related to our named therapeutic areas of interest. Many of these companies and institutions, including, but not limited to, Pfizer, GlaxoSmithKline, Merck and Novartis, have targeted indications that overlap significantly with our targets and have substantially greater resources, longer operating histories, larger client bases and greater marketing and financial resources than we do. They may, therefore, succeed in commercializing products before we do that compete with us on the basis of efficacy, safety and price.

      Our ability to compete is predicated on three related factors:

Governmental Regulation

      We plan to develop prescription-only drugs for the foreseeable future. The FDA is the regulatory agency in the United States that is charged with the protection of people who take prescription medicines. Every country has a regulatory body with a similar mandate. The European Union (“EU”) has vested centralized authority in the European Medicines Evaluation Agency and Committee on Proprietary Medicinal Products to standardize review and approval across EU member nations.

      These regulatory agencies enforce comprehensive statutes, regulations and guidelines governing the drug development process. This process involves several steps. First, the drug company must generate preclinical data to show safety before human testing may be initiated. In the United States, the drug company must submit an Investigational New Drug application (“IND”) to the FDA prior to securing authorization for human testing. The IND must contain adequate data on product candidate chemistry, toxicology and metabolism and, where appropriate, animal research testing to support initial safety

evaluation in humans. In addition, the drug company must provide the FDA with a clinical study plan, including protocols specifying the proposed use and testing of the drug in healthy volunteers and patients.

      Clinical trials for a new product candidate ordinarily proceed through three phases, and may extend into a fourth phase:

      Clinical trials, including the adequate and well controlled clinical investigations conducted in Phase III, are designed and conducted in a variety of ways. These Phase III studies are often randomized, placebo-controlled and double-blinded. A “placebo-controlled” trial is one in which one group of patients, referred to as an “arm” of the trial, receives the drug being tested and another group receives a placebo, which is a substance known not to have pharmacologic or therapeutic activity. In a “double-blind” study, neither the researcher nor the patient knows which arm of the trial is receiving the drug or the placebo. “Randomized” means that upon enrollment patients are placed into one arm or the other at random by computer. Other controls also may be used by which the test drug is evaluated against a comparator. For example, “parallel control” trials generally involve studying a patient population that is not exposed to the study medication (i.e., is either on placebo or standard treatment protocols). In such studies experimental subjects and control subjects are assigned to groups upon admission to the study and remain in those groups for the duration of the study. Not all studies are highly controlled. An “open label” study is one where the researcher and the patient know that the patient is receiving the drug. A trial is said to be “pivotal” if it is designed to meet statistical criteria with respect to pre-determined “endpoints,” or clinical objectives, that the sponsor believes, based usually on its interactions with the relevant regulatory authority, will be sufficient to demonstrate safety and effectiveness meeting regulatory approval standards. In most cases, two “pivotal” clinical trials are necessary for approval.

      Regulatory authorities, institutional review boards overseeing studies, or the sponsor may suspend a clinical trial at any time on various grounds, including a finding that the subjects or patients are being exposed to an unacceptable health risk.

      The FDA may require, or companies may pursue, additional clinical trials after a product is approved. So-called Phase IV studies may be a condition of NDA approval to be satisfied after a drug is commercially available. The results of Phase IV studies can confirm the effectiveness of a product candidate and can provide important safety information to augment the FDA’s voluntary adverse drug reaction reporting system.

      The results of product development, pre-clinical studies and clinical trials are submitted to the FDA as part of an NDA for an unapproved drug candidate, or as part of an NDA supplement if the drug product is already approved. Supplemental applications are submitted for various reasons, including new indications for use and new strengths. The FDA may deny approval of an NDA or NDA supplement if applicable regulatory criteria are not satisfied. In such cases, the FDA often concludes that additional clinical data, particularly from new pivotal studies, are needed. Even if such data are submitted, the FDA may ultimately decide that the NDA or NDA supplement does not satisfy the criteria for approval. Once an approval is issued, the FDA may withdraw product approval if ongoing regulatory standards are not met or if safety problems occur after the product reaches the market. In addition, the FDA may require testing and surveillance programs to monitor the effect of approved products that have been commercialized, and the FDA has the power to prevent or limit further marketing of a product based on the results of these post-marketing programs.

      Satisfaction of FDA requirements, or similar requirements of foreign regulatory agencies, typically takes several years. The time required may vary substantially based upon the type, complexity and novelty of the product or disease. Typically, if a drug product is intended to treat a chronic disease, as is the case with the product candidates we are developing, safety and efficacy data must be gathered over an extended period of time, which can range from six months to three years or more. Government regulation may delay or prevent marketing of product candidates or new drugs for a considerable period of time and impose costly limits upon our activities. We cannot be certain that the FDA or any other regulatory agency will grant approvals for any indications for our product candidates on a timely basis, if at all. Success in early stage clinical trials does not ensure success in later stage clinical trials. Data obtained from clinical activities is not always conclusive and may be susceptible to varying interpretations, which could delay, limit or prevent regulatory approval. Even if a product candidate receives regulatory approval, the approval may be significantly limited to specific disease states, patient populations and dosages. Further, even after regulatory approval is obtained, later discovery of previously unknown problems with a product may result in restrictions on the product or even complete withdrawal of the product from the market. In addition, we cannot predict what adverse governmental regulations may arise from future United States or foreign governmental action.

      The FDA closely regulates the marketing and promotion of drugs. A company can make only those claims relating to safety and efficacy that are approved by the FDA. Failure to comply with these requirements can result in adverse publicity, warning letters, corrective advertising and potential civil and criminal penalties.

      The FDA’s policies may change and additional government regulations may be enacted that could prevent or delay regulatory approval of our product candidates or approval of new diseases for our existing products. We cannot predict the likelihood, nature or extent of adverse governmental regulation that might arise from future legislative or administrative action, either in the United States or abroad.

      We must meet regulatory standards prior to exposing subjects to any drug candidate. We remain responsible for any of these development activities whether we perform them internally or contract them to a third party. The FDA may audit us or our third party contractors at any time to ascertain compliance

with standards. The FDA may halt all ongoing work if it determines that we or our contractors have deviated significantly from these standards. These standards include:

      Any products manufactured or distributed by us pursuant to FDA approvals are subject to continuing regulation by the FDA, including record-keeping requirements and reporting of adverse experiences with the drug. Drug manufacturers and their contractors involved in the manufacture of drug components or the required testing of the drug or its components are required to register their establishments with the FDA and certain state agencies. As registered establishments, they are subject to periodic unannounced inspections by the FDA and certain state agencies for compliance with current GMP. These inspections are intended to assure that procedural and documentation requirements applicable to third party manufacturers are met in order to ensure that the product meets established specifications. We cannot be certain that we or our present or future suppliers will be able to comply with the current GMP and other FDA regulatory requirements. If our present or future suppliers are not able to comply with these requirements, the FDA may halt our clinical trials, require us to recall a drug from distribution or withdraw approval of the NDA for that drug.

      The FDA has expanded its expedited review process in recognition that certain severe or life-threatening diseases and disorders have only limited treatment options. Fast track designation expedites the development process, but places greater responsibility on a drug company during Phase IV clinical trials. The drug company may request fast track designation for one or more indications at any time during the IND process, and the FDA must respond within 60 days. Fast track designation allows the drug company to develop product candidates faster based on the ability to request an accelerated approval of the NDA. For accelerated approval the clinical effectiveness is based on a surrogate endpoint in a smaller number of patients. In addition, the drug company may request priority review at the time of the NDA submission. If the FDA accepts the NDA submission as a priority review, the time for review is reduced from one year to six months. We plan to request fast track designation and/or priority review, as appropriate, for internal drug development programs.

      In addition, our research and development processes and manufacturing activities involve the controlled use of hazardous materials, chemicals and radioactive materials and produce waste products. We are subject to federal, state and local laws and regulations governing the use, manufacture, storage, handling and disposal of hazardous materials and waste products.

      Advertising is subject to FDA oversight in the United States and national review elsewhere. In addition, state and local governments and other federal agencies may control marketing if the drug substance, formulation, package, intended use or disposal is subject to local regulation.

Research and Development

      Our research and development expenses in 2005, 2004 and 2003 were $71.3 million, $59.2 million and $46.7 million, respectively. We plan to increase our research and development expenses as we continue to invest in our clinical programs. We plan to focus our near-term research and development efforts on the continued development of the products in our current development pipeline, which include AGI-1067, AGI-1096 and other preclinical v-protectant^® compounds.

Employees

      As of March 3, 2006, we had 113 full-time employees, including 89 in research and development. The employee group includes 30 employees with Ph.D.s, seven with M.D.s and 25 with Masters degrees. We believe that our employee relations are good.

Available Information

      Our internet website is located at www.atherogenics.com. Copies of our reports filed under Section 13(a) or 15(d) of the Exchange Act, including annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and all amendments to these reports, may be accessed from our website, free of charge, as soon as reasonably practicable after these reports are electronically filed with or furnished to the Securities and Exchange Commission. The reference to our website address does not constitute incorporation by reference of the information contained on the website, which should not be considered part of this document. Additionally, you may read and copy materials that we file with the SEC at the SEC’s Public Reference Room at 100 F Street, N.E. Washington, D.C. 20549. You can obtain information on the operation of the Public Reference Room by calling the SEC at 1-800-SEC-0330.

Scientific Advisory Board

      We have established a scientific advisory board to provide guidance and counsel on aspects of our business. The board convenes about once a year and individual members are contacted as required. Members of the advisory board provide input on product research and development strategy, education and publication plans. The names and members of the advisory board are as follows:

Forward-Looking Statements and Risks Related to Our Company and Business

      The Private Securities Litigation Reform Act of 1995 provides a safe harbor for forward-looking statements made by or on behalf of AtheroGenics. AtheroGenics and its representatives may from time to time make written or oral forward-looking statements, including statements contained in this report and our other filings with the Securities and Exchange Commission and in our reports to our shareholders. Generally, the words, “believe,” “expect,” “intend,” “estimate,” “anticipate,” “will” and similar expressions identify forward-looking statements. All statements which address operating performance, events or developments that we expect or anticipate will occur in the future, including projections of our future results of operations or of our financial condition, research, development and commercialization of our product candidates, and anticipated trends in our business, are forward-looking statements within the meaning of the Reform Act. The forward-looking statements are and will be based on our then current views and assumptions regarding future events and operating performance, and speak only as of their dates. We undertake no obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

      The following are some of the factors that could affect our financial performance or could cause actual results to differ materially from those expressed or implied in our forward-looking statements:

Risks Related to Our Financial Results and Need for Additional Financing

      Our ability to generate revenue and achieve profitability depends on our ability, alone or with collaborators, to complete successfully the development of our product candidates, conduct preclinical tests and clinical trials, obtain the necessary regulatory approvals and manufacture and market the resulting drugs. We have had no significant revenue to date. We have experienced operating losses since we began operations in 1994. As of December 31, 2005, we had an accumulated deficit of approximately $294.7 million. We expect to incur additional operating losses and expect cumulative losses to increase substantially as our research and development, preclinical, clinical, manufacturing and marketing efforts expand. If we are unable to achieve and then maintain profitability, the market value of our common stock and our outstanding notes will decline.

      We expect our research and development expenses to increase in connection with our ongoing activities. We believe that our existing cash, cash equivalents and short-term investments will be sufficient to enable us to fund our operating expenses, obligations under our financing arrangements and capital expenditure requirements for at least the next 12 months. Our future capital requirements will depend on many factors, including:

      If our future capital requirements exceed our available funds, we will need to seek additional financing. We may be unable to raise capital when needed or on attractive terms. If additional funds are not available, we may need to delay clinical studies, curtail operations or obtain funds through collaborative arrangements that may require us to relinquish rights to some of our products or potential markets.

Risks Related to Development and Commercialization of Product Candidates and Dependence on Third Parties

      AGI-1067 is our lead compound. Our ability to generate product revenues will depend heavily on the successful development and commercialization of this compound. The commercial success of AGI-1067 will depend on several factors, including the following:

      AGI-1067 could fail in clinical trials if we are unable to show that it is effective or if it causes unacceptable side effects in the patients we treated. While the plaque regression observed in the group treated with AGI-1067 in the CART-2 trial exceeded that observed in the standard of care group numerically, the difference was not statistically significant. Moreover, the results of our Phase II clinical trials of AGI-1067 are not necessarily indicative of the results we will obtain in our Phase III clinical trial of AGI-1067, particularly because the primary clinical endpoints of these trials are not the same. Failure in clinical trials of AGI-1067 would have a material adverse effect on our ability to generate revenue or become profitable. If we are not successful in commercializing AGI-1067, or are significantly delayed in doing so, our business will be materially harmed.

      We have entered into a license and collaboration agreement with AstraZeneca to develop and commercialize AGI-1067. The development program is managed by us and AstraZeneca under joint development and management committees. Under this collaboration, AstraZeneca will lead the marketing efforts in all markets throughout the world, while we will have the right to co-promote AGI-1067 with AstraZeneca in the United States.

      Our collaboration with AstraZeneca to develop AGI-1067 may ultimately not be successful. The success of any collaboration arrangement will depend heavily on the efforts and activities of our collaborator. In general, we cannot control the amount and timing of resources that AstraZeneca may devote to our collaboration. If AstraZeneca fails to assist in the development and commercialization of AGI-1067, or if AstraZeneca’s efforts are not effective, our business may be negatively affected. Our collaboration with AstraZeneca may not continue or result in commercialized drugs. If we do not maintain a successful collaborative partnership with AstraZeneca for the co-development and commercialization of AGI-1067, we may be forced to focus our efforts internally to commercialize AGI-1067. This would require greater financial resources and would result in us incurring greater expenses and may cause a delay in market penetration while we continue to build our own commercial operation or seek alternative collaborative partners.

      AstraZeneca has the right to terminate the agreement at its election upon the occurrence of certain conditions. In particular, AstraZeneca may terminate the agreement: (1) upon 90 days prior written notice at any time during the 45 day period following the release of the final ARISE results; (2) at any time in the 30 day period following receipt of a letter from the FDA stating either that: (a) the FDA will not approve the application, or (b) it will only approve the application if specific conditions are met, and such conditions make it reasonably likely that (i) approval of AGI-1067 will occur more than 24 months

following the receipt of the FDA letter, or (ii) development costs will exceed a specified amount (unless we agree to pay any amount in excess of the specified amount); (3) if the FDA requires information or data from additional studies not contemplated in the original license agreement, when the added cost to AstraZeneca of complying with the FDA requirements is reasonably likely to exceed a specified amount (unless we agree to pay any amounts in excess of the specified amount); and (4) for any reason at any time during the one-year period following the third anniversary of receipt of FDA approval, upon giving us 365 days written notice at any time during that one-year period.

      Other than AGI-1067, all of our other product candidates are in early stages of development, and only one other product candidate has undergone Phase I clinical trials. Our product candidates are subject to the risks of failure inherent in developing drug products based on new technologies. We do not expect any of our potential product candidates, including AGI-1067, to be commercially available until at least 2007. Our drug discovery efforts may not produce any other proprietary product candidates. Our failure to develop product candidates will limit our ability to generate additional revenue.

      Product candidates we develop, alone or with others, may not prove safe and effective in clinical trials and may not meet all of the applicable regulatory requirements needed to receive regulatory approval. If we fail to adequately demonstrate safety and efficacy for any product candidate, we will not be able to commercialize that product candidate. Our failure to commercialize a product candidate will materially adversely affect our revenue opportunities. We will need to conduct significant research, preclinical testing and clinical trials before we can file product approval applications with the FDA and similar regulatory authorities in other countries. Preclinical testing and clinical trials are long, expensive and uncertain processes. We may spend several years completing our testing for any particular product candidate. Failure can occur at any stage.

      The FDA or we may suspend our clinical trials at any time if either of us believes that we are exposing the subjects participating in these trials to unacceptable health risks. The FDA or institutional review boards at the medical institutions and healthcare facilities where we sponsor clinical trials may suspend any trial indefinitely if they find deficiencies in the conduct of these trials. The FDA and these institutional review boards have authority to oversee our clinical trials, and the FDA may require large numbers of test subjects. In addition, we must manufacture the product candidates that we use in our clinical trials under the FDA’s Good Manufacturing Practices.

      Even if we achieve positive results in early clinical trials, these results do not necessarily predict final results. A number of companies in the pharmaceutical industry have suffered significant setbacks in advanced clinical trials, even after achieving positive results in earlier trials. Negative or inconclusive results or adverse medical events during a clinical trial could cause the FDA or us to terminate a clinical trial or require that we repeat it.

      In addition, even if we receive approval for commercial sale of any of our product candidates, after use in an increasing number of patients, our products could show side effect profiles that limit their usefulness or require their withdrawal although the drugs did not show the side effect profile in Phase I through Phase III clinical trials.

      A key element of our business strategy is to collaborate with third parties, particularly leading pharmaceutical companies, to develop and commercialize some of our product candidates. We expect to seek collaborations for the development and commercialization of product candidates in the future. The

timing and terms of any collaboration will depend on the evaluation by prospective collaborators of the trial results and other aspects of the drug’s safety and efficacy profile. If we are unable to reach agreements with suitable collaborators for any product candidate, we would be forced to fund the entire development and commercialization of such product candidates, and we may not have the resources to do so. If resource constraints require us to enter into a collaboration early in the development of a product candidate, we may be forced to accept a more limited share of any revenues this product may eventually generate. We face significant competition in seeking appropriate collaborators. Moreover, these collaboration arrangements are complex and time-consuming to negotiate and document. We may not be successful in our efforts to establish collaborations or other alternative arrangements for any product candidate.

      In addition to our license and collaborative agreements with AstraZeneca to develop and commercialize AGI-1067, we have entered into and renewed a collaboration agreement with Astellas to develop AGI-1096 in preclinical testing and early-stage clinical trials and intend to pursue additional collaborations in the future with large pharmaceutical companies to commercialize other products that we develop to target patient or physician populations in broad markets. Our existing collaborations and any other collaboration that we may establish may not be successful. The success of any collaboration arrangement will depend heavily on the efforts and activities of our collaborators. Collaborators will likely have significant discretion in determining the efforts and resources that they will apply to these collaborations. The risks that we anticipate being subject to in collaborations include:

      The termination of any collaboration that we may establish might adversely affect the development of the related product candidates and our ability to derive revenue from them. Collaborations with pharmaceutical companies and other third parties often are terminated or allowed to expire by the other party or by us. For example, in 2001, Schering-Plough and we terminated a collaboration that we had established for AGI-1067, and our existing collaboration with Astellas for the development of AGI-1096 is terminable by Astellas. Any future terminations or expirations would adversely affect us financially and could harm our business reputation. In that event, we might be required to devote additional resources to the product or product candidate, seek a new collaborator or abandon the product or product candidate, any of which could have an adverse effect on our business.

      We currently have no manufacturing facilities to synthesize or manufacture our product candidates, nor do we intend to develop these capabilities in the near future. In October 2005, we entered into a

commercial supply agreement for production of AGI-1067 and Probucol with Dow. Under our joint license and collaboration agreement, the manufacturing agreement with Dow will be assigned to AstraZeneca, which is responsible for all of the AGI-1067 manufacturing, packaging and labeling activities. Our reliance on AstraZeneca and on other third parties for these services exposes us to various risks that could delay our clinical trials or hinder our commercialization prospects. These risks include the following:

      Any products that we bring to the market may not gain market acceptance by physicians, patients, healthcare payors and others in the medical community. If these products do not achieve an adequate level of acceptance, we may not generate material product revenues and we may not become profitable. The degree of market acceptance of our product candidates, if approved for commercial sale, will depend on a number of factors, including:

      The development and commercialization of new drugs is highly competitive. Our competitors include large pharmaceutical and more established biotechnology companies. Moreover, there are approved products on the market for many of the diseases for which we are developing drugs. In many cases, these products have well known brand names, are distributed by large pharmaceutical companies and have achieved widespread acceptance among physicians and patients. Our competitors have significant resources and expertise in research and development, manufacturing, testing, obtaining regulatory approvals and marketing. Potential competitors also include academic institutions, government agencies, and other public and private research organizations that conduct research, seek patent protection and establish collaborative arrangements for research, development, manufacturing and commercialization. Any of these competitors could develop technologies or products that would render our technologies or product candidates obsolete or non-competitive, which could adversely affect our revenue potential. These third parties also compete with us in recruiting and retaining qualified scientific and management personnel, establishing clinical trial sites and patient registration for clinical trials, as well as in acquiring technologies complementary to or necessary for our programs or advantageous to our business.

      We have not previously sold, marketed or distributed any products and currently have no sales, marketing or distribution capabilities. As our drug candidates progress towards ultimate commercialization, we will need to develop our sales and marketing abilities and enter into agreements with third parties to perform these functions. Pursuant to our joint licensing and collaboration agreement, AstraZeneca will be responsible for the distribution and marketing of AGI-1067 in all markets throughout the world. In addition, AstraZeneca has agreed to fund a sales force of up to 125 people for three years. Prior to and during this three-year period, we may be unable to successfully hire and retain key sales and marketing personnel that we need to effectively manage and carry out the commercialization of AGI-1067, or any other drug candidates. Even if we manage to hire and retain necessary personnel, we may be unable to implement our sales, marketing and distribution strategies effectively or profitably. We have no experience in developing, training or managing a sales force and will incur substantial additional expenses in doing so. The cost of establishing and maintaining a sales force may exceed its cost effectiveness. In addition, we will compete with many companies that currently have extensive and well-funded marketing and sales operations. Lastly, in the event that AGI-1067 or another of our drug candidates is not approved for marketing by the FDA, or if AstraZeneca terminates our joint licensing and collaboration agreement, we may have incurred expenses for the buildup of a sales force that we may not be able to recover, and may have difficulty continuing to maintain the sales force and marketing infrastructure funded by AstraZeneca.

      Most patients rely on Medicare and Medicaid, private health insurers and other third party payors to pay for their medical needs, including any drugs we or any collaborators may market. If government or other third party payors do not provide adequate coverage or reimbursement for any products that we may develop, our revenues and prospects for profitability will suffer. In December 2003, the Congress enacted

the Medicare Prescription Drug and Modernization Act of 2003, which expanded Medicare coverage of prescription drugs by establishing Medicare Part D, a voluntary, limited outpatient prescription drug program. While the Part D program may increase demand for our products, Part D prescription drug plans will have substantial leverage in negotiating the prices of drugs furnished through the program. This may result in lower prices for products that are provided through the Part D program than we might otherwise obtain. In addition, price concessions that we provide to Part D plans could adversely impact our pricing with non-Medicare third party payors.

      A primary trend in the United States healthcare industry is toward cost containment. In addition, in some foreign countries, particularly the countries of the European Union, the pricing of prescription pharmaceuticals is subject to governmental control. In these countries, pricing negotiations with governmental authorities can take six to 12 months or longer after the receipt of regulatory marketing approval for a product. To obtain reimbursement or pricing approval in some countries, we may be required to conduct a clinical trial that compares the cost effectiveness of our product candidates or products to other available therapies. The conduct of such a clinical trial could be expensive and result in delays in commercialization of our products.

      Third party payors are challenging the prices charged for medical products and services, and many third party payors limit reimbursement for newly-approved healthcare products. In particular, third party payors may limit the indications for which they will reimburse patients who use any products that we may develop. Cost control initiatives could decrease the price we might establish for products that we may develop, which would result in lower product revenues to us.

      The testing and marketing of medicinal products entail an inherent risk of product liability. Clinical trial subjects, consumers, healthcare providers or pharmaceutical companies or others selling our future products could bring product liability claims against us. If we cannot successfully defend ourselves against claims that our product candidates or products caused injuries, we will incur substantial liabilities. Regardless of merit or eventual outcome, liability claims may result in:

      We may not be able to acquire or maintain insurance coverage at a reasonable cost or in sufficient amounts to protect us from this kind of liability.

Risks Related to Our Intellectual Property

      Our success will depend in large part on our ability to obtain and maintain protection in the United States and other countries for the intellectual property covering or incorporated into our technologies and products. The patents and patent applications in our patent portfolio are either owned by us or licensed to

us. Our ability to protect our product candidates from unauthorized or infringing use by third parties depends substantially on our ability to obtain and maintain valid and enforceable patents. Due to evolving legal standards relating to the patentability, validity and enforceability of patents covering pharmaceutical inventions and the scope of claims made under these patents, our ability to obtain and enforce patents is uncertain and involves complex legal and factual questions for which important legal principles are unresolved.

      We may not be able to obtain patent rights on products, treatment methods or manufacturing processes that we may develop or to which we may obtain license or other rights. Even if we do obtain patents, rights under any issued patents may not provide us with sufficient protection for our product candidates or provide sufficient protection to afford us a commercial advantage against our competitors or their competitive products or processes. It is possible that no patents will be issued from any pending or future patent applications owned by us or licensed to us. Others may challenge, seek to invalidate, infringe or circumvent any patents we own or license. Alternatively, we may in the future be required to initiate litigation against third parties to enforce our intellectual property rights. The cost of this litigation could be substantial and our efforts could be unsuccessful. Changes in either patent laws or in interpretations of patent laws in the United States and other countries may diminish the value of our intellectual property or narrow the scope of our patent protection.

      Our patents also may not afford us protection against competitors with similar technology. We may not have identified all patents, published applications or published literature that affect our business either by blocking our ability to commercialize our product candidates, by preventing the patentability of our drugs to us or our licensors or by covering the same or similar technologies that may affect our ability to market our product candidates. For example, patent applications in the United States are maintained in confidence for up to 18 months after their filing. In some cases, however, patent applications remain confidential in the United States Patent and Trademark Office for the entire time prior to issuance as a United States patent. Patent applications filed in countries outside the United States are not typically published until at least 18 months from their first filing date. Similarly, publication of discoveries in the scientific or patent literature often lags behind actual discoveries. Therefore, we or our licensors might not have been the first to invent, or the first to file, patent applications on our drug candidates or for their use. The laws of some foreign jurisdictions do not protect intellectual property rights to the same extent as in the United States and many companies have encountered significant difficulties in protecting and defending these rights in foreign jurisdictions. If we encounter such difficulties in protecting or are otherwise precluded from effectively protecting our intellectual property rights in foreign jurisdictions, our business prospects could be substantially harmed.

      Our research, development and commercialization activities, as well as any product candidates or products resulting from these activities, may infringe or be claimed to infringe patents or patent applications under which we do not hold licenses or other rights. Third parties may own or control these patents and patent applications in the United States and abroad. These third parties could bring claims against us or our collaborators that would cause us to incur substantial expenses and, if successful against us, could cause us to pay substantial damages. Further, if a patent infringement suit were brought against us or our collaborators, we or they could be forced to stop or delay research, development, manufacturing or sales of the product or product candidate that is the subject of the suit.

      As a result of patent infringement claims, or in order to avoid potential claims, we or our collaborators may choose or be required to seek a license from the third party and be required to pay license fees or royalties or both. These licenses may not be available on acceptable terms, or at all. Even if we or our collaborators were able to obtain a license, the rights may be nonexclusive, which could result in our competitors gaining access to the same intellectual property. Ultimately, we could be prevented from commercializing a product, or be forced to cease some aspect of our business operations, if, as a result of

actual or threatened patent infringement claims, we or our collaborators are unable to enter into licenses on acceptable terms. This could harm our business significantly.

      There has been substantial litigation and other proceedings regarding patent and other intellectual property rights in the pharmaceutical and biotechnology industries. In addition to infringement claims against us, we may become a party to other patent litigation and other proceedings, including interference proceedings declared by the United States Patent and Trademark Office and opposition proceedings in the European Patent Office, regarding intellectual property rights with respect to our products and technology. The cost to us of any patent litigation or other proceeding, even if resolved in our favor, could be substantial. Some of our competitors may be able to sustain the costs of such litigation or proceedings more effectively than we can because of their substantially greater financial resources. Uncertainties resulting from the initiation and continuation of patent litigation or other proceedings could have a material adverse effect on our ability to compete in the marketplace. Patent litigation and other proceedings may also absorb significant management time.

      Our commercial success will also depend on our ability to develop, manufacture, use, sell and offer to sell our product candidates and proposed product candidates without breaching our agreements with our patent licensors. We are a party to a number of license agreements, including exclusive licenses to technologies from Emory, covering aspects of our v-protectant^® technology, and the National Jewish Medical and Research Center, covering aspects of our MEKK technology platform. We expect to enter into additional licenses in the future. Our exclusive license with Emory requires us to take steps to commercialize the licensed technology in a timely manner. If we fail to meet these obligations, Emory can convert our exclusive license to a non-exclusive license, can grant others non-exclusive rights in the licensed technology or can require us to sublicense aspects of the licensed technology. Our license agreement with National Jewish requires us to develop the licensed technology in a timely manner. If we fail to meet these obligations, some or all of the licensed technology may revert to National Jewish. Our existing licenses impose, and we expect future licenses will impose, various diligence, milestone payments, royalty, insurance and other obligations on us. If we fail to comply with these obligations, the licensor may have the right to terminate the license, in which event we might not be able to market any product that is covered by the licensed patents.

      In addition to patented technology, we rely on trade secrets, proprietary know-how and technological advances, which we seek to protect through agreements with our collaborators, employees and consultants. These persons and entities could breach our agreements, for which breaches we may not have adequate remedies. In addition, others could become aware of our trade secrets or proprietary know-how through independent discovery or otherwise. If we are unable to protect the confidentiality of our proprietary information and know-how, competitors may be able to use this information to develop products that compete with our products, which could adversely impact our business.

Risks Related to Regulatory Approval of Our Product Candidates

      We cannot commercialize any of our product candidates, including AGI-1067 and AGI-1096, until the appropriate regulatory authorities have reviewed and approved the applications for the product candidates. The regulatory agencies may not complete their review processes in a timely manner and we may not obtain regulatory approval for any product candidate we or our collaborators develop. Satisfaction of regulatory requirements typically takes many years, if approval is obtained at all, is dependent upon the

type, complexity and novelty of the product and requires the expenditure of substantial resources. Regulatory approval processes outside the United States include all of the risks associated with the FDA approval process. In addition, we may experience delays or rejections based upon additional government regulation from future legislation or administrative action or changes in FDA policy during the period of product development, clinical trials and FDA regulatory review. The FDA has substantial discretion in the approval process and may refuse to accept any application or may decide that our data is insufficient for approval and require additional preclinical, clinical or other studies. In addition, varying interpretations of the data obtained from preclinical and clinical testing could delay, limit or prevent regulatory approval of a product candidate.

      We do not know whether planned clinical trials will begin on time or whether we will complete any of our clinical trials on schedule or at all. Product development costs to us and our collaborators will increase if we have delays in testing or approvals or if we need to perform more or larger clinical trials than planned. Significant delays may adversely affect our financial results and the commercial prospects for our products, and delay our ability to become profitable.

      We rely heavily on independent clinical investigators, contract research organizations and other third party service providers for successful execution of our clinical trials, but do not control many aspects of their activities. We are responsible for ensuring that each of our clinical trials is conducted in accordance with the general investigational plan and protocols for the trial. Moreover, the FDA requires us to comply with standards, commonly referred to as Good Clinical Practices, for conducting and recording and reporting the results of clinical trials to assure that data and reported results are credible and accurate and that the rights, integrity and confidentiality of trial participants are protected. Our reliance on third parties that we do not control does not relieve us of these responsibilities and requirements. Third parties may not complete activities on schedule, or may not conduct our clinical trials in accordance with regulatory requirements or our stated protocols. The failure of these third parties to carry out their obligations could delay or prevent the development, approval and commercialization of our product candidates.

      We intend to have our products marketed outside the United States. In order to market our products in the European Union and many other foreign jurisdictions, we must obtain separate regulatory approvals and comply with numerous and varying regulatory requirements. AstraZeneca will have responsibility to obtain regulatory approvals outside the United States with respect to AGI-1067, and we will depend on AstraZeneca to obtain these approvals. The approval procedure varies among countries and can involve additional testing. The time required to obtain approval may differ from that required to obtain FDA approval. The foreign regulatory approval process may include all of the risks associated with obtaining FDA approval. We may not obtain foreign regulatory approvals on a timely basis, if at all. Approval by the FDA does not ensure approval by regulatory authorities in other countries or jurisdictions, and approval by one foreign regulatory authority does not ensure approval by regulatory authorities in other foreign countries or jurisdictions or by the FDA. We and any future collaborators may not be able to file for regulatory approvals and may not receive necessary approvals to commercialize our products in any market.

      Our failure to comply with applicable FDA or other regulatory requirements, including manufacturing, quality control, labeling, safety surveillance, promoting and reporting, may result in criminal prosecution, civil penalties, recall or seizure of our products, total or partial suspension of production or an injunction,

as well as other regulatory action against our potential products or us. Discovery of previously unknown problems with a product, supplier, manufacturer or facility may result in restrictions on the sale of our products, including a withdrawal of such products from the market.

      Any regulatory approval that we may receive for our current or future product candidates will be limited to those diseases and indications for which these product candidates are clinically demonstrated to be safe and effective. In addition to the FDA approval required for new formulations, any new indication to an approved product also requires FDA approval. If we are not able to obtain FDA approval for a broad range of indications for our product candidates, our ability to effectively market and sell our product candidates may be greatly reduced and our business will be adversely affected.

Risks Related to Our Operations

      We are a small company with approximately 113 full-time employees. If we are unable to continue to attract, retain and motivate highly qualified management and scientific personnel and to develop and maintain important relationships with leading academic institutions and scientists, we may not be able to achieve our research and development objectives. Competition for personnel and academic collaborations is intense. We have entered into employment agreements with each of our executive officers. These employment agreements are terminable by the employee on short notice. Loss of the services of any of these officers or of our key scientific personnel could adversely affect the progress of our research and development programs. All of our other employees are at will employees. We do not carry key person insurance on any employee.

      We have been contacted by the staff of SEC and the NASD regarding informal inquiries they are conducting related to our September 27, 2004 announcement of interim results from the CART-2 clinical trial for AGI-1067 and trading in our common stock surrounding that announcement. The SEC staff’s notice states that its inquiry should not be construed as an expression of opinion on the part of the SEC or its staff that any violations of law have occurred. The SEC and NASD staff have requested that we voluntarily provide them with documents and other information relating to that announcement. We are cooperating fully with these requests. Based on our review of the facts as to the September 27, 2004 announcement and trading in our common stock surrounding that announcement, we do not believe that we or any of our officers or directors have violated any laws related to these inquiries. However, we cannot predict the outcome of these inquiries, whether the SEC or NASD will undertake any form of investigation or proceeding relating to us or our officers or directors or when these matters might be resolved.

      Our research and development involves the controlled use of hazardous materials, chemicals and various radioactive compounds. Although we believe that our safety procedures for handling and disposing of these materials comply with the standards prescribed by state and federal regulations, the risk of accidental contamination or injury from these materials cannot be eliminated. If an accident occurs, we could be held liable for resulting damages, which could be substantial. We are also subject to numerous environmental, health and workplace safety laws and regulations, including those governing laboratory

procedures, exposure to blood-borne pathogens and the handling of biohazardous materials. Additional federal, state and local laws and regulations affecting our operations may be adopted in the future. We may incur substantial costs to comply with, and substantial fines or penalties if we violate, any of these laws or regulations.

Risks Related to our Common Stock and Indebtedness

      The market price of our common stock, and the market prices for securities of pharmaceutical and biotechnology companies in general, have been highly volatile and may continue to be highly volatile in the future. During the period from January 1, 2005 to March 3, 2006, the closing sale price of our common stock on the NASDAQ National Market ranged from a low of $10.66 per share to a high of $21.14 per share. The following factors, in addition to other risk factors described in this report, may have a significant impact on the market price of our common stock:

      In the past, following periods of volatility in the market price of a company’s securities, securities class action litigation has often been instituted. Purported securities class action lawsuits were filed against us and some of our executive officers and directors in the United States District Court for the Southern District of New York on January 5, 2005 and February 8, 2005 (the “SDNY Actions”) and in the United States District Court for the Northern District of Georgia, Atlanta division on January 7, 2005, January 10, 2005, January 11, 2005 and January 25, 2005 (the “NDGA Actions”). Plaintiffs filed separate motions to consolidate these lawsuits in both the Southern District of New York and the Northern District of Georgia on March 7, 2005. In addition, three class members simultaneously moved for appointment as lead plaintiffs in both districts on March 7, 2005. On April 18, 2005, the Honorable Richard J. Holowell ordered the SDNY Actions consolidated under the caption “In re Atherogenics Securities Litigation” (the “SDNY Action”) and appointed lead plaintiff and co-lead counsel. On July 5, 2005, AtheroGenics filed a motion to transfer the SDNY Action to the Northern District of Georgia. On July 14, 2005, the plaintiffs voluntarily dismissed the NDGA Actions. The SDNY Action and the defendants’ motion to transfer that action to Georgia are still pending. The allegations in these lawsuits relate to our disclosures regarding the results of the CART-2 clinical trial for AGI-1067. The results of complex legal proceedings, such as these purported class actions, are difficult to predict. Each complaint seeks unspecified damages and, therefore, we are unable to estimate the possible range of damages that we might incur should any of these lawsuits be resolved against us. An unfavorable outcome or settlement of these lawsuits could harm our financial position. In addition, similar class action lawsuits may be filed against us and our executive officers and

directors in the future. Litigation can be costly, time consuming and disruptive to normal business operations. The defense of these lawsuits could also result in diversion of our management’s time and attention away from business operations, which could harm our business.

      As of December 31, 2005, we had $300.1 million of total indebtedness outstanding. We may also incur additional long-term indebtedness or obtain additional working capital lines of credit to meet future financing needs. Our indebtedness could have significant negative consequences for our business, operating results and financial condition, including:

      If we do not achieve a significant increase in revenues, we could have difficulty making required payments on our outstanding convertible notes, our other existing indebtedness and any indebtedness that we may incur in the future. During each of the last five years, we had no earnings to cover our fixed charges. If we are unable to generate sufficient cash flow or otherwise obtain funds necessary to make required payments, or if we fail to comply with the various requirements of our convertible notes, our other existing indebtedness or any indebtedness which we may incur in the future, we would be in default, which would permit the holders of the notes and that other indebtedness to accelerate the maturity of the notes and that other indebtedness and could cause defaults under the notes and that other indebtedness. Any default under our convertible notes, our other existing indebtedness or any indebtedness which we may incur in the future could have a material adverse effect on our business, operating results and financial condition.

      The conversion of some or all of the 1.5% convertible notes due 2012 or the 4.5% convertible notes due 2008 will dilute the ownership interests of existing shareholders. In January 2006, holders converted $14.0 million of the 4.5% convertible notes into 1,085,000 shares of our common stock. Any sales in the public market of the common stock issuable upon such conversion could adversely affect prevailing market prices of our common stock. In addition, the existence of the notes may encourage short selling by market participants because the conversion of the notes could depress the price of our common stock.

      Our shareholder rights plan and provisions of our articles of incorporation and bylaws could make it more difficult for a third party to acquire us. These documents include provisions that:

      None.

      Our scientific and administration facility encompasses approximately 50,000 square feet in Alpharetta, Georgia. We lease our facility pursuant to a long-term lease agreement that expires in 2009, and our remaining aggregate commitment under this long-term, non-cancelable lease is approximately $3.8 million. This lease may be extended at our option to 2019.

      In November 2001, we leased a facility in Norcross, Georgia encompassing approximately 5,800 square feet. We lease this laboratory facility pursuant to a long-term lease agreement that, as amended, expires in 2007, and our remaining aggregate commitment under this long-term, non-cancelable lease is approximately $264,000. We have the option to renew this lease under mutually agreeable terms.

      Purported securities class action lawsuits were filed against us and some of our executive officers and directors in the United States District Court for the Southern District of New York on January 5, 2005 and February 8, 2005 (the “SDNY Actions”) and in the United States District Court for the Northern District of Georgia, Atlanta division on January 7, 2005, January 10, 2005, January 11, 2005 and January 25, 2005 (the “NDGA Actions”). Plaintiffs filed separate motions to consolidate these lawsuits in both the Southern District of New York and the Northern District of Georgia on March 7, 2005. In addition, three class members simultaneously moved for appointment as lead plaintiffs in both districts on March 7, 2005. On April 18, 2005, the Honorable Richard J. Holowell ordered the SDNY Actions consolidated under the caption “In re Atherogenics Securities Litigation” (the “SDNY Action”) and appointed lead plaintiff and co-lead counsel. On July 5, 2005, AtheroGenics filed a motion to transfer the SDNY Action to the Northern District of Georgia. On July 14, 2005, the plaintiffs voluntarily dismissed the NDGA Actions. The SDNY Action and the defendants’ motion to transfer that action to Georgia are still pending. The allegations in these lawsuits relate to our disclosures regarding the results of the CART-2 clinical trial for AGI-1067. The results of complex legal proceedings, such as these purported class actions, are difficult to predict. Each complaint seeks unspecified damages and, therefore, we are unable to estimate the possible range of damages that we might incur should any of these lawsuits be resolved against us.

      None.

PART II

Common Stock Information

      Our common stock is traded on the Nasdaq National Market under the symbol “AGIX.” The following table sets forth the range of high and low reported last sale price per share of our common stock as quoted on the Nasdaq National Market for each period indicated.

      As of March 3, 2006, there were approximately 9,600 holders of our common stock. This number includes beneficial owners of our common stock whose shares are held in the names of various dealers, clearing agencies, banks, brokers and other fiduciaries.

Dividend Policy

      We have never declared or paid any dividends on our capital stock. We currently intend to retain all of our future earnings, if any, to finance our operations and do not anticipate paying any cash dividends on our capital stock in the foreseeable future.

      The selected financial data set forth below should be read in conjunction with our financial statements and the related notes and “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” included in this annual report. The historical results are not necessarily indicative of the operating results to be expected in the future.

      The following table contains a summary of our balance sheet data as of December 31:

      The following discussion should be read in conjunction with our financial statements and related notes included in this annual report. In this report, “AtheroGenics,” “we,” “us” and “our” refer to AtheroGenics, Inc.

      This annual report contains forward-looking statements made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. These statements are subject to certain factors, risks and uncertainties that may cause actual results, events and performances to differ materially from those referred to in such statements. These risks include statements which address operating performance, events or developments that we expect or anticipate will occur in the future, such as projections about our future results of operations or financial condition, research, development and commercialization of our product candidates, anticipated trends in our business, and other risks that could cause actual results to differ materially. You should carefully consider these risks, which are discussed in this annual report, including, without limitation, in the sections entitled “Risk Factors” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” and in AtheroGenics’ SEC filings.

Overview

      AtheroGenics is a research-based pharmaceutical company focused on the discovery, development and commercialization of novel drugs for the treatment of chronic inflammatory diseases, including coronary heart disease, organ transplant rejection, rheumatoid arthritis and asthma. We have developed a proprietary vascular protectant, or v-protectant^®, technology platform to discover drugs to treat these types of diseases. Based on our v-protectant^® platform, we have two drug development programs in clinical trials and are pursuing a number of other preclinical programs.

      AGI-1067, our first candidate, is our v-protectant^® that is most advanced in clinical development. AGI-1067 is designed to benefit patients with coronary heart disease, or CHD, which is atherosclerosis of the blood vessels of the heart. We are currently evaluating AGI-1067 in the Phase III clinical trial called ARISE (Aggressive Reduction of Inflammation Stops Events) as an oral therapy for the treatment of atherosclerosis. In December 2005, we announced a license and collaboration agreement with AstraZeneca for the global development and commercialization of AGI-1067. Under the terms of the agreement, we received an upfront license fee of $50 million and, subject to the achievement of specific milestones, including a successful outcome in ARISE, we will be eligible for development and regulatory milestones of up to an aggregate of $300 million. The agreement also provides for progressively demanding sales performance related milestones of up to an additional $650 million in the aggregate. In addition, we will also receive royalties on product sales. AstraZeneca has the right to terminate the license and collaboration agreement at specified periods as further described above in Item 1. “Business — Collaborations.”

      AGI-1096, our second candidate, is a novel antioxidant and selective anti-inflammatory agent that is being developed to address the accelerated inflammation of grafted blood vessels, known as transplant arteritis, common in chronic organ transplant rejection. We are working with Astellas Pharma Inc. to further develop AGI-1096 in preclinical and early-stage clinical trials.

      We previously were developing AGIX-4207, a v-protectant^® candidate for the treatment of rheumatoid arthritis. Based on our findings, however, we have discontinued clinical development of AGIX-4207 for rheumatoid arthritis. We continue to have an active program aimed at investigating other v-protectants^® in rheumatoid arthritis and are working to select another candidate to move into formal preclinical development.

      We have also identified additional potential v-protectant^® candidates to treat other chronic inflammatory diseases, including asthma. We are evaluating these v-protectants^® to determine lead drug candidates for clinical development. We plan to develop these compounds rapidly and may seek regulatory fast track status, if available, to expedite development and commercialization.

      The following table provides information regarding our research and development expenses for our major product candidates:

      From inception, we have devoted the large majority of our research and development efforts and financial resources to support development of the AGI-1067 product candidate. We will retain responsibility for the ongoing ARISE clinical trial and for regulatory filings in the United States. AstraZeneca will have full responsibility for pre-commercialization activities involving AGI-1067 and will oversee all aspects of the marketing, sales and distribution of AGI-1067 on a worldwide basis. AstraZeneca will also be responsible for all non-U.S. regulatory filings. Spending for the AGI-1096 program in 2005, 2004 and 2003 was funded by our collaborative development partner, Astellas. In 2004, we discontinued clinical development of AGIX-4207.

      The nature, timing and costs of the efforts to complete the successful development of any of our product candidates are highly uncertain and subject to numerous risks, and therefore cannot be accurately estimated. These risks include the rate of progress and costs of our clinical trials, clinical trial results, cost and timing of regulatory approval and establishing commercial manufacturing supplies. These risks and uncertainties, and their effect on our operations and financial position, are more fully described above in our risk factors under the headings Risks Related to Development and Commercialization of Our Product Candidates and Dependence on Third Parties and Risks Related to Regulatory Approval of Our Product Candidates.

      We have not derived any commercial revenues from product sales. We expect to incur significant losses in most years prior to deriving any such product revenue as we continue to increase research and development costs. We have funded our operations primarily through sales of equity and debt securities. We have incurred significant losses since we began operations and, as of December 31, 2005, had an accumulated deficit of $294.7 million. We cannot assure you that we will become profitable or receive any milestone-related revenues under our agreement with AstraZeneca. We expect that losses will fluctuate from quarter to quarter and that these fluctuations may be substantial. Our ability to achieve profitability depends upon our ability, alone or with others, to complete the successful development of our product candidates, to obtain required regulatory clearances and to manufacture and market our future products.

Critical Accounting Policies and Use of Estimates

      The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions and select accounting policies that affect the amounts reported in our financial statements and the accompanying notes. Actual results could significantly differ from those estimates. We have identified the following policies and related estimates as critical to our business operations and the understanding of our results of operations. A description of these critical accounting policies and a discussion of the significant estimates and judgments associated with these policies are set forth below. The impact of and any associated risks related to these policies on our business operations are also discussed throughout Management’s Discussion and Analysis of Financial Condition and Results of Operations.

      As part of the process of preparing our financial statements, we are required to estimate expenses that we believe we have incurred, but have not yet been billed for. This process involves identifying services and activities that have been performed by third party vendors on our behalf and estimating the level to which they have been performed and the associated cost incurred for such service as of each balance sheet date in our financial statements. Examples of expenses for which we accrue include fees for professional services, such as those provided by certain clinical research organizations and investigators in conjunction with clinical trials, and fees owed to contract manufacturers in conjunction with the manufacture of clinical trial materials. We make these estimates based upon progress of activities related to contractual obligations and also information received from vendors.

      We recognize revenue in accordance with the SEC’s Staff Accounting Bulletin (“SAB”) No. 101, Revenue Recognition in Financial Statements, as amended by Staff Accounting Bulletin No. 104, Revenue Recognition, (“SAB 104”). SAB 104 provides guidance in applying U.S. generally accepted accounting principles to revenue recognition issues, and specifically addresses revenue recognition for upfront, nonrefundable fees received in connection with research collaboration agreements.

      In accordance with SAB 104, license fees, which are nonrefundable, are recognized when the related license agreements specify that no further efforts or obligations are required of us. In February 2006, we received a $50 million license fee in connection with our license and collaboration agreement with AstraZeneca. The upfront license payment will be recognized over the period that we estimate we are obligated to provide services to the licensee. In 2006, revenues will be approximately $23 million related to the amortization of the upfront license fee from AstraZeneca.

      We have elected to follow Accounting Principles Board (“APB”) Opinion No. 25, Accounting for Stock Issued to Employees (“APB 25”), in accounting for our stock-based employee compensation plans, rather than the alternative fair value accounting method provided for under Statement of Financial Accounting Standards (“SFAS”) No. 123, Accounting for Stock-Based Compensation (“SFAS 123”). We account for transactions in which services are received in exchange for equity instruments based on the fair value of such services received from non-employees, in accordance with SFAS 123 and Emerging Issues Task Force (“EITF”) Issue No. 96-18, Accounting for Equity Instruments that Are Issued to Other than Employees for Acquiring, or in Conjunction with Selling, Goods or Services. SFAS No. 148, Accounting for Stock-Based Compensation — Transition and Disclosure (“SFAS 148”), an amendment to SFAS 123, requires disclosure in the summary of significant accounting policies of the effects of an entity’s accounting policy with respect to stock-based employee compensation on reported net income and earnings per share in annual and interim financial statements.

      In December 2004, the Financial Accounting Standards Board (“FASB”) issued SFAS No. 123(R), Share-Based Payment (“SFAS 123(R)”), which revises SFAS No. 123 and supersedes APB 25. SFAS 123(R) requires that companies recognize compensation expense associated with stock option grants and other equity instruments to employees in the financial statements and became effective as of January 1, 2006. SFAS 123(R) applies to all grants after the effective date and to the unvested portion of stock options outstanding as of the effective date. The pro forma disclosures previously permitted under SFAS 123 are no longer an alternative to financial statement recognition. We will adopt the provisions of SFAS 123(R) as of January 1, 2006 and we intend to use the modified-prospective method and the Black-Scholes valuation model for valuing share-based payments. We expect that the adoption will have a material impact on our results of operations and net loss per share. The actual impact of SFAS 123(R) cannot be predicted at this time because it will depend on levels of stock option grants and changes in valuation assumptions. However, had we adopted SFAS 123(R) in prior periods, the impact would have approximated the impact of SFAS 123 as previously described in the pro forma disclosures.

Results of Operations

Comparison of Years Ended December 31, 2005 and 2004

      There were no revenues during 2005 or 2004.

      Research and Development. Research and development expenses were $71.3 million in 2005, compared to $59.2 million in 2004. The increase of $12.0 million, or 20%, is primarily due to increased expenditures for the AGI-1067 ARISE Phase III clinical trial, including manufacturing activities for clinical drug supply, study monitoring, payments to clinical investigators and salary and personnel related expenses.

      We expect that research and development expenses in 2006 will be approximately equal to the 2005 level. Expenses in 2006 will be primarily related to activities surrounding the AGI-1067 ARISE Phase III clinical trial and regulatory activities related to U.S. NDA preparation.

      General and Administrative. General and administrative expenses were $9.1 million in 2005, compared to $6.6 million in 2004. The increase of $2.4 million, or 37%, is primarily due to an increase in the cost of AGI-1067 business development activities, including legal fees for the license and collaboration agreement with AstraZeneca and market research costs. Also contributing to the increase were higher legal fees related to the class action lawsuit.

      Interest and other income is primarily comprised of interest income earned on our cash and short-term investments. Interest and other income was $6.7 million in 2005, compared to $1.4 million in 2004. The increase is due to the additional funds received from the issuance of $200.0 million in aggregate principal amount of 1.5% convertible notes in January 2005 along with an increase in rates on our interest bearing accounts.

      Interest expense was $8.9 million in 2005 compared to $5.2 million in 2004. The increase in interest expense is due to the issuance of $200.0 million in aggregate principal amount of 1.5% convertible notes in January 2005.

      As of December 31, 2005, we had net operating loss carryforwards and research and development credit carryforwards of $299.1 million and $9.4 million, respectively, available to offset future taxable income. The net operating loss carryforwards and the research and development credit carryforwards will expire between 2010 and 2026. Because of our lack of earnings history, the resulting deferred tax assets have been fully offset by a valuation allowance. The utilization of the carryforwards is dependent upon the timing and extent of our future profitability. The annual limitations combined with the expiration dates of the carryforwards may prevent the utilization of all of the net operating loss and research and development credit carryforwards if we do not attain sufficient profitability by the expiration dates of the carryforwards.

Comparison of Years Ended December 31, 2004 and 2003

      There were no revenues during 2004 or 2003.

      Research and Development. Research and development expenses were $59.2 million in 2004, compared to $46.7 million in 2003. The increase of $12.6 million, or 27%, was primarily due to increased expenditures for the AGI-1067 ARISE Phase III clinical trial, including manufacturing activities for clinical drug supply, study monitoring, payments to clinical investigators and salary and personnel related expenses.

      General and Administrative. General and administrative expenses were $6.6 million in 2004, compared to $5.9 million in 2003. The increase of $676,831, or 11%, was primarily due to a full year’s impact of the increase in directors and officers’ insurance premiums in 2004 compared to a partial year’s impact of the increase in premiums in 2003, an increase in professional fees in connection with compliance with the Sarbanes-Oxley Act of 2002 and consulting fees. Also contributing to the increase were business development expenses related to partnering activities, along with salary and personnel expenses.

      Interest and other income was primarily comprised of interest income earned on our cash and short-term investments. Interest and other income was $1.4 million in 2004, compared to $1.3 million in 2003. The slight increase is due to the increase in the weighted average cash and short-term investment balances along with an increase in interest rates.

      Interest expense was $5.2 million in 2004 compared to $2.0 million in 2003. The increase in interest expense is due to a full year of interest expense resulting from our $100.0 million long-term convertible debt, issued in August 2003, compared to a partial year in 2003.

      As of December 31, 2004, we had net operating loss carryforwards and research and development credit carryforwards of $205.9 million and $6.4 million, respectively, available to offset future taxable income.

Liquidity and Capital Resources

      Since inception, we have financed our operations primarily through sales of equity securities and convertible notes. At December 31, 2005, we had cash, cash equivalents and short-term investments of $182.5 million, compared with $66.9 million and $131.6 million at December 31, 2004 and 2003, respectively. Working capital at December 31, 2005 was $173.2 million, compared to $59.7 million and $124.8 million at December 31, 2004 and 2003, respectively. The increase in cash, cash equivalents and short-term investments and working capital in 2005 is due to funds received from the issuance of our 1.5% convertible notes in January 2005 that raised net proceeds of approximately $193.6 million. The decrease in cash, cash equivalents, short-term investments and working capital in 2004 is primarily due to the use of funds for operating purposes. The increase in cash, cash equivalents and short-term investments and working capital in 2003 is due to funds received from our follow-on stock offering in February 2003 of approximately $48.4 million and the issuance of our 4.5% convertible notes in August 2003 that raised net proceeds of approximately $96.7 million.

      Net cash used in operating activities was $77.8 million in 2005 compared to $66.6 million in 2004 and $48.6 million in 2003. The increase in the use of cash in operating activities in 2005 is principally due to funding a net loss of $82.6 million. The increase in cash needed to fund the net loss is primarily attributable to expenditures for our ARISE Phase III clinical trial for AGI-1067, as well as other ongoing product development activities. For 2006, expenditures for the ARISE clinical trial are estimated to be approximately $33.0 million. We anticipate net cash usage in 2006 for ARISE and our other ongoing preclinical and clinical programs, as well as our other operating activities, to be in a range of $35.0 million to $40.0 million, which is net of the $50.0 million license fee received from AstraZeneca in February 2006.

      Net cash used in investing activities was $51.7 million in 2005 compared to net cash provided by investing activities of $27.1 million in 2004 and $68.1 million used in investing activities in 2003. Net cash used in investing activities in 2005 and 2003 consisted primarily of net purchases of available-for-sale securities. Net cash provided by investing activities in 2004 consisted primarily of net sales of available-for-sales securities. Additionally, in 2005, $3.0 million was used to purchase equipment and leasehold improvements, which includes $1.9 million spent for commercial manufacturing equipment.

      Net cash provided by financing activities was $196.5 million in 2005 compared to $2.3 million in 2004 and $146.1 million in 2003. Net cash provided by financing activities in 2005 consisted primarily of $193.6 million received from the issuance of 1.5% convertible notes in January 2005. Net cash provided by financing activities in 2004 consisted primarily of the proceeds received upon exercise of common stock options. Net cash provided by financing activities in 2003 consisted primarily of $48.4 million received from our follow-on stock offering in February 2003 and $96.7 million received from the issuance of our 4.5% convertible notes in August 2003.

      In March 2002, we entered into an equipment loan facility, as modified in June 2003, with Silicon Valley Bank for up to a maximum amount of $2.5 million to be used to finance existing and new equipment purchases. The borrowing period under the equipment loan facility, as modified, expired on September 30, 2003. The equipment loan facility was paid in full during 2005.

      In June 2005, we entered into an equipment loan for approximately $103,800 for the purchase of software and computer equipment. The loan is payable over 36 months at an annual interest rate of 4.78%.

      In August 2003, we issued $100 million in aggregate principal amount of 4.5% convertible notes due 2008 through a Rule 144A private placement to qualified institutional buyers. These notes initially are convertible into our common stock at a conversion rate of 65.1890 shares per $1,000 principal amount of notes, or approximately $15.34 per share. Net proceeds were approximately $96.7 million. Interest on the 4.5% convertible notes is payable semi-annually in arrears on March 1 and September 1. As of December 31, 2005, we have recorded $1.5 million of accrued interest expense related to the notes, which is due March 1, 2006. In January 2006, we exchanged $14.0 million in aggregate principal amount of the 4.5% convertible notes for 1,085,000 shares of our common stock. From time to time, we may enter into additional exchange offers and/or purchases of these notes.

      In January 2005, we issued $200 million in aggregate principal amount of 1.5% convertible notes due 2012 through a Rule 144A private placement to qualified institutional buyers. These notes are convertible into shares of our common stock at a conversion rate of 38.5802 shares per $1,000 principal amount of notes, or approximately $25.92 per share. Interest on the 1.5% convertible notes is payable semi-annually in arrears on February 1 and August 1. Net proceeds were approximately $193.6 million. As of December 31, 2005, we have recorded $1.3 million of accrued interest expense related to the notes, which is due February 1, 2006. We are using the net proceeds from the sale of the notes to fund the ongoing costs of the ARISE Phase III clinical trial for AGI-1067 and other research and development activities, including clinical trials, process development and manufacturing support, and for general corporate purposes, including working capital. Pending these uses, the net proceeds have been invested in interest-bearing, investment grade securities.

      The following table summarizes our long-term contractual obligations as of December 31, 2005:

      Based upon the current status of our product development and commercialization plans, we believe that our existing cash, cash equivalents and short-term investments will be adequate to satisfy our capital needs for at least the next 12 months. However, our actual capital requirements will depend on many factors, including those factors potentially impacting our financial condition as discussed in Item 1A. “Risk Factors” and the following:

      We have historically accessed the capital markets from time to time to raise adequate funds for operating needs and cash reserves. Although we believe we have adequate cash for at least the next 12 months, we may access capital markets when we believe market conditions or company needs merit doing so.

      The primary objective of our investment activities is to preserve principal while at the same time maximizing the income we receive from our investments without significantly increasing risk. Some of the securities that we invest in may have market risk. This means that a change in prevailing interest rates may cause the fair value of the principal amount of the investment to fluctuate. For example, if we hold a security that was issued with a fixed interest rate at the then-prevailing rate and the prevailing interest rate later rises, the fair value of the principal amount of our investment will probably decline. To minimize this risk in the future, we intend to continue to maintain our portfolio of cash equivalents and short-term investments in a variety of securities, including commercial paper, all of which have a minimum investment rating of A1/P1, money market funds, and government and non-government debt securities. The average duration of all of our investments has generally been less than one year. Due to the short-

term nature of these investments, we believe we have no material exposure to interest rate risk arising from our investments.

      The following table summarizes the maturity of the debt and projected annual weighted average interest rates on our equipment loan and convertible notes as of December 31, 2005.

ATHEROGENICS, INC.

INDEX TO FINANCIAL STATEMENTS

MANAGEMENT’S ANNUAL REPORT ON

INTERNAL CONTROL OVER FINANCIAL REPORTING

      Management of AtheroGenics, Inc. is responsible for establishing and maintaining adequate internal control over financial reporting as defined in Rules 13a-15(f) and 15d-15(f) under the Securities Exchange Act of 1934, as amended. AtheroGenics’ internal control over financial reporting is designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with U.S. generally accepted accounting principles. AtheroGenics’ internal control over financial reporting includes those policies and procedures that:

      Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

      Management, including AtheroGenics’ principal executive officer and principal financial officer, assessed the effectiveness of AtheroGenics’ internal control over financial reporting as of December 31, 2005. In making this assessment, management used the criteria set forth by the Committee of Sponsoring Organizations of the Treadway Commission (COSO) in Internal Control-Integrated Framework.

      Based on our assessment and those criteria, management believes that AtheroGenics maintained effective internal control over financial reporting as of December 31, 2005.

      AtheroGenics’ independent registered public accounting firm has issued an attestation report on management’s assessment of AtheroGenics’ internal control over financial reporting which is included herein.

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

ON INTERNAL CONTROL

The Board of Directors and Shareholders of AtheroGenics, Inc.

      We have audited management’s assessment, included in the accompanying Management’s Annual Report on Internal Control Over Financial Reporting, that AtheroGenics, Inc. maintained effective internal control over financial reporting as of December 31, 2005, based on criteria established in Internal Control — Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (the COSO criteria). AtheroGenics, Inc.’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting. Our responsibility is to express an opinion on management’s assessment and an opinion on the effectiveness of the Company’s internal control over financial reporting based on our audit.

      We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, evaluating management’s assessment, testing and evaluating the design and operating effectiveness of internal control, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

      A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with U.S. generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

      Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

      In our opinion, management’s assessment that AtheroGenics, Inc. maintained effective internal control over financial reporting as of December 31, 2005 is fairly stated, in all material respects, based on the COSO criteria. Also, in our opinion, AtheroGenics, Inc. maintained, in all material respects, effective internal control over financial reporting as of December 31, 2005 based on the COSO criteria.

      We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the balance sheets of AtheroGenics, Inc. as of December 31, 2005 and 2004, and the related statements of operations, shareholders’ (deficit) equity and cash flows for each of the three years in the period ended December 31, 2005 and our report dated March 9, 2006 expressed an unqualified opinion thereon.

Atlanta, Georgia

March 9, 2006

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

ON FINANCIAL STATEMENTS

The Board of Directors and Shareholders of AtheroGenics, Inc.

      We have audited the accompanying balance sheets of AtheroGenics, Inc. as of December 31, 2005 and 2004, and the related statements of operations, shareholders’ (deficit) equity and cash flows for each of the three years in the period ended December 31, 2005. These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on these financial statements based on our audits.

      We conducted our audits in accordance with auditing standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

      In our opinion, the financial statements referred to above present fairly, in all material respects, the financial position of AtheroGenics, Inc. at December 31, 2005 and 2004, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2005, in conformity with U.S. generally accepted accounting principles.

      We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the effectiveness of AtheroGenics, Inc.’s internal control over financial reporting as of December 31, 2005, based on criteria established in Internal Control — Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission and our report dated March 9, 2006 expressed an unqualified opinion thereon.

Atlanta, Georgia

March 9, 2006

ATHEROGENICS, INC.

BALANCE SHEETS

The accompanying notes are an integral part of these financial statements.

ATHEROGENICS, INC.

STATEMENTS OF OPERATIONS

The accompanying notes are an integral part of these financial statements.

ATHEROGENICS, INC.

STATEMENTS OF SHAREHOLDERS’ (DEFICIT) EQUITY

The accompanying notes are an integral part of these financial statements.

ATHEROGENICS, INC.

STATEMENTS OF CASH FLOWS

The accompanying notes are an integral part of these financial statements.

NOTES TO FINANCIAL STATEMENTS

      AtheroGenics, Inc. (“AtheroGenics”) was incorporated on November 23, 1993 (date of inception) in the State of Georgia to focus on the discovery, development and commercialization of novel therapeutics for the treatment of chronic inflammatory diseases, such as heart disease (atherosclerosis), rheumatoid arthritis and asthma.

      The preparation of the financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates.

      AtheroGenics considers all highly liquid investments with a maturity of three months or less when purchased to be cash equivalents. AtheroGenics’ cash equivalents consist primarily of money market accounts, commercial paper, government agency notes and corporate notes on deposit with several financial institutions, and the carrying amounts reported in the balance sheets approximate their fair value.

      Short-term investments consist of government agency notes, corporate notes, commercial paper, auction rate securities and certificates of deposit with original maturities of greater than three months when purchased.

      Management determines the appropriate classification of debt securities at the time of purchase and reevaluates such designation as of each balance sheet date. These investments are accounted for in accordance with SFAS 115. AtheroGenics has classified all investments as available-for-sale. Available-for-sale securities are carried at fair value, with the unrealized gains and losses, net of tax, reported in a separate component of shareholders’ (deficit) equity. Realized gains and losses are included in investment income and are determined on a specific identification basis.

      Financial instruments that subject AtheroGenics to concentration of credit risk consist primarily of cash, cash equivalents and short-term investments. These assets are maintained by reputable third party financial institution custodians. The carrying values reported in the balance sheets for cash, cash equivalents and short-term investments approximate fair values.

      Equipment and leasehold improvements are stated at cost. Depreciation of computer and lab equipment is computed using the straight-line method over the estimated useful lives of three and five years, respectively. Amortization of leasehold improvements is recorded over the shorter of: (a) the estimated useful lives of the related assets; or (b) the lease term.

      As part of the process of preparing its financial statements, AtheroGenics is required to estimate expenses that it believes it has incurred, but has not yet been billed for. This process involves identifying services and activities that have been performed by third party vendors on its behalf and estimating the level to which they have been performed and the associated cost incurred for such service as of each

NOTES TO FINANCIAL STATEMENTS — (Continued)

balance sheet date in its financial statements. Examples of expenses for which AtheroGenics accrues include fees for professional services, such as those provided by certain clinical research organizations and investigators in conjunction with clinical trials, and fees owed to contract manufacturers in conjunction with the manufacture of clinical trial materials. AtheroGenics makes these estimates based upon progress of activities related to contractual obligations and also information received from vendors.

      Research and development costs, including all related salaries, clinical trial expenses, facility costs and expenditures related to obtaining patents, are charged to expense when incurred.

      AtheroGenics has elected to follow Accounting Principles Board Opinion No. 25, Accounting for Stock Issued to Employees (“APB 25”), in accounting for its stock-based employee compensation plans, rather than the alternative fair value accounting method provided for under SFAS No. 123, Accounting for Stock-Based Compensation (“SFAS 123”). AtheroGenics accounts for transactions in which services are received in exchange for equity instruments based on the fair value of such services received from non-employees, in accordance with SFAS 123 and Emerging Issues Task Force (“EITF”) Issue No. 96-18, Accounting for Equity Instruments that are Issued to Other than Employees for Acquiring, or in Conjunction with Selling, Goods or Services. SFAS No. 148, Accounting for Stock-Based Compensation — Transition and Disclosure (“SFAS 148”), an amendment to SFAS 123, requires disclosure in the summary of significant accounting policies of the effects of an entity’s accounting policy with respect to stock-based employee compensation on reported net income and earnings per share in annual and interim financial statements.

      The following table illustrates the effect on net loss and net loss per share as if the fair value based method had been applied to all outstanding and unvested options in each period, based on the provisions of SFAS 123 and SFAS 148.

      The fair value for these options (which are granted with an exercise price equal to fair market value on the grant date) was estimated using the Black-Scholes option valuation model with the following weighted average assumptions:

NOTES TO FINANCIAL STATEMENTS — (Continued)

      The liability method is used in accounting for income taxes. Deferred income tax assets and liabilities are determined based on differences between financial reporting and tax bases of assets and liabilities and are measured using the enacted tax rates and laws that are expected to be in effect when the differences are anticipated to reverse.

      AtheroGenics computes comprehensive income (loss) in accordance with SFAS No. 130, Reporting Comprehensive Income (“SFAS 130”). SFAS 130 establishes standards for the reporting and display of comprehensive income (loss) and its components in the financial statements. Comprehensive income (loss), as defined, includes all changes in equity during a period from non-owner sources, such as unrealized gains and losses on available-for-sale securities. Comprehensive loss was $82,667,971, $69,639,434 and $53,277,226 for the years ended December 31, 2005, 2004 and 2003, respectively.

      In December 2004, the Financial Accounting Standards Board (“FASB”) issued SFAS No. 123(R), Share-Based Payment (“SFAS 123(R)”), which revises SFAS 123 and supersedes APB 25. SFAS 123(R) requires that companies recognize compensation expense associated with stock option grants and other equity instruments to employees in the financial statements and is effective as of January 1, 2006. SFAS 123(R) applies to all grants after the effective date and to the unvested portion of stock options outstanding as of the effective date. Under SFAS 123(R), AtheroGenics must determine the appropriate fair value model to be used for valuing share-based payments, the amortization method for compensation cost and the transition method to be used at the date of adoption. The permitted transition methods are either a modified prospective method or a modified retrospective method. The modified prospective method requires that compensation expense be recorded for all unvested options at the beginning of the first quarter of adoption of SFAS 123(R), while the modified retrospective method requires that compensation expense be recorded for all unvested options beginning with the first period presented. Under the modified retrospective method, prior periods may be restated either as of the beginning of the year of adoption or for all periods presented. The pro forma disclosures previously permitted under SFAS 123 will no longer be an alternative to financial statement recognition. AtheroGenics will adopt the provisions of SFAS 123(R) as of January 1, 2006 and it intends to use the modified prospective method and the Black-Scholes valuation model for valuing share-based payments. AtheroGenics expects that the adoption will have a material impact on its results of operations and net loss per share. The actual impact of SFAS 123(R) cannot be predicted at this time because it will depend on levels of stock option grants and changes in valuation assumptions. However, had AtheroGenics adopted SFAS 123(R) in prior periods, the impact would have approximated the impact of SFAS 123 as previously described in the pro forma disclosures.

      Short-term investments consist of debt securities classified as available-for-sale and have maturities greater than 90 days from the date of acquisition. AtheroGenics has invested primarily in corporate notes and commercial paper, all of which have a minimum investment rating of A1/P1, and government agency notes. The realized loss from the sale of investments was $11,768 for the year ended December 31, 2005. There were no realized gains or losses from the sale of investments for the year ended December 31, 2004.

NOTES TO FINANCIAL STATEMENTS — (Continued)

The cumulative unrealized losses were $152,941 and $39,297 at December 31, 2005 and 2004, respectively. The following table summarizes the estimated fair value of AtheroGenics’ short-term investments:

      All available-for-sale securities held at December 31, 2005 will mature during 2006.

      Equipment and leasehold improvements consist of the following:

      In March 2005, AtheroGenics had committed to purchase approximately $3,500,000 of commercial manufacturing equipment for AGI-1067, to be delivered in 2006. As of December 31, 2005 $1,860,765 has been recorded in construction-in-progress for this equipment.

      In August 2003, AtheroGenics issued $100,000,000 in aggregate principal amount of 4.5% convertible notes due September 1, 2008 with interest payable semi-annually in March and September. Net proceeds to AtheroGenics were approximately $96,700,000, after deducting expenses and underwriter’s discounts and commissions. The issuance costs related to the notes are recorded as debt issuance costs and other assets and are being amortized to interest expense over the five-year life of the notes.

      The notes may be converted into shares of AtheroGenics’ common stock, at the option of the holder, prior to the close of business on September 1, 2008 at a conversion rate of 65.1890 shares per $1,000 principal amount of notes, representing a conversion price of approximately $15.34, subject to adjustment. Under certain circumstances, AtheroGenics may be obligated to redeem all or part of the notes prior to their maturity at a redemption price equal to 100% of their principal amount, plus accrued and unpaid interest and liquidated damages, if any, up to but excluding the maturity date.

      In January 2005, AtheroGenics issued $200,000,000 in aggregate principal amount of 1.5% convertible notes due February 1, 2012 with interest payable semi-annually in February and August. Net proceeds to AtheroGenics were approximately $193,600,000, after deducting expenses and underwriter’s discounts and

NOTES TO FINANCIAL STATEMENTS — (Continued)

commissions. The issuance costs related to the notes are recorded as debt issuance costs and other assets and are being amortized to interest expense over the seven-year life of the notes.

      The 1.5% convertible notes may be converted into shares of AtheroGenics’ common stock, at the option of the holder, at a conversion rate of 38.5802 shares per $1,000 principal amount of notes, which represents a conversion price of approximately $25.92, subject to adjustment. Under certain circumstances, AtheroGenics may be obligated to redeem all or part of the 1.5% convertible notes prior to their maturity at a redemption price equal to 100% of their principal amount, plus accrued and unpaid interest and liquidated damages, if any, up to but excluding the maturity date. In addition, under certain circumstances, AtheroGenics may adjust the conversion rate.

      As of December 31, 2005, AtheroGenics has reserved a total of 14,234,953 shares of common stock for future issuance in connection with the 4.5% convertible notes and the 1.5% convertible notes. In addition, as of December 31, 2005, there was approximately $1,500,000 of accrued interest related to the 4.5% convertible notes, which is due March 1, 2006, and $1,250,000 of accrued interest related to the 1.5% convertible notes, which is due February 1, 2006.

      In March 2002, AtheroGenics entered into an equipment loan facility, as amended, with Silicon Valley Bank for up to a maximum amount of $2,500,000 to be used to finance existing and new equipment purchases. The equipment loan facility was paid in full during 2005.

      In June 2005, AtheroGenics entered into an equipment loan for approximately $103,800 for the purchase of software and computer equipment. The loan is payable over 36 months at an annual interest rate of 4.78%.

      Maturities of long-term debt as of December 31, 2005 are as follows: