Corcept Therapeutics Inc (CORT) SEC Annual Report (10-K) for 2015

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

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FORM 10-K

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For the fiscal year ended December 31, 2015

or

For the transition period from to

Commission File Number: 000-50679

CORCEPT THERAPEUTICS INCORPORATED

(Exact Name of Corporation as Specified in Its Charter)

___________________________________________ __________________ ___________________________________________________________________________

149 Commonwealth Drive

Menlo Park, CA 94025

(Address of principal executive offices )   ( zip code)

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(650) 327-3270

(Registrant's telephone number, including area code)

___________________________________________ __________________ ___________________________________________________________________________

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

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

None

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

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

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 ☒ No ☐

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes ☒ No ☐

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

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer , a non-accelerated filer or a smaller reporting company. See the definitions of "large accelerated filer", "accelerated filer" and "smaller reporting company" in Rule 12b-2 of the Exchange Act.

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

The aggregate market value of voting and non-voting common equity held by non-affiliates of the Registrant was $423,445,421 as of June 30, 2015 based upon the closing price on the NASDAQ Capital Market reported for such date. This calculation does not reflect a determination that certain persons are affiliates of the Registrant for any other purpose.

On March 7, 2016 there were 109,660,606 shares o f common stock outstanding at a par value of $0.001 per share.

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the Registrant's definitive proxy statement for its 2016 Annual Meeting of Stockholders are incorporated by reference in Items 10, 11, 12, 13 and 14 of Part III.

TA BLE OF CONTENTS

Form 10-K

For the year ended December 31, 2015

PART I

This Annual Report on Form 10-K (Form 10-K) contains forward-looking statements within the meaning of Section 21E of the Securities Exchange Act of 1934, as amended (Exchange Act), and Section 27A of the Securities Act of 1933, as amended (Securities Act). All statements contained in this Form 10-K, other than statements of historical fact, are forward-looking statements. When used in this report or elsewhere by management from time to time, the words "believe," "anticipate," "intend," "plan," "estimate," "expect," "may," "will," "should," "seek" and similar expressions are forward-looking statements. Such forward-looking statements are based on current expectations, but the absence of these words does not necessarily mean that a statement is not forward-looking. Forward-looking statements made in this Form 10-K include, but are not limited to, statements about:

Forward-looking statements are not guarantees of future performance and involve risks and uncertainties. Actual events or results may differ materially from those discussed in the forward-looking statements as a result of various factors. For a more detailed discussion of such forward-looking statements and the potential risks and uncertainties that may impact upon their accuracy, see the "Risk Factors" section of this Form 10-K and the "Overview" and "Liquidity and Capital Resources" sections of the "Management's Discussion and Analysis of Financial Condition and Results of Operations" section of this Form 10-K. These forward-looking statements reflect our view only as of the date of this report. Except as required by law, we undertake no obligations to update any forward-looking statements. Accordingly, you should also carefully consider the factors set forth in other reports or documents that we file from time to time with the Securities and Exchange Commission (SEC).

Unless otherwise stated, all references in this document to "we," "us," "our," "Corcept," the "Company," "our company" and similar designations refer to Corcept Therapeutics Incorporated.

ITE M 1.  BUSINESS

Overview

We are a pharmaceutical company engaged in the discovery, development and commercialization of drugs that treat severe metabolic, oncologic and psychiatric disorders by modulating the effects of cortisol. Elevated levels and abnormal release patterns of cortisol are implicated in a broad range of human disorders. Since our inception in 1998, we have been developing mifepristone, a compound that modulates the effect s of cortisol by acting as a competitive antagonist at the glucocorticoid receptor (GR). We have also discovered three structurally distinct series of proprietary, selective cortisol modulators, all of which share mifepristone's affinity for GR but, unlike mifepristone, do not bind to the progesterone receptor, and so do not terminate pregnancy or cause other side effects associated with progesterone receptor antagonism. We have begun pre-clinical and clinical development of our lead compounds from these series .

In 2012, the United States Food and Drug Administration (FDA) approved Korlym ® (mifepristone) 300 mg Tablets as a once-daily oral medication for the treatment of hyperglycemia secondary to hypercortisolism in adult patients with endogenous Cushing's syndrome who have type 2 diabetes mellitus or glucose intolerance and have failed surgery or are not candidates for surgery.  FDA approval means that we can market the drug in the United States. We first made Korlym available to patients in April 2012 and continue to develop the sales, marketing, medical affairs and logistical infrastructure needed to commercialize the drug.

We are conducting a Phase 1/2 trial of mifepristone (Korlym's active ingredient) in combination with the chemotherapy drug eribulin (Halaven ® ) to treat patients with metastatic, triple-negative breast cancer (TNBC) – a form of solid-tumor cancer with a particularly poor prognosis. We expect to have results of this trial by mid-2016.

By the end of the first quarter of 2016, we plan to begin two Phase 2 trials of our lead selective cortisol modulator, CORT125134. One trial will study the compound's efficacy as a treatment for patients with Cushing's syndrome. The second trial will combine CORT125134 with anti-cancer agents to treat patients with a variety of solid-tumor cancers.

The Role of Cortisol in Disease

Cortisol is a steroid hormone that plays a significant role in the way the body reacts to stressful conditions. It influences metabolism and the immune system and contributes to emotional stability. It is essential for survival. Insufficient cortisol activity may lead to dehydration, hypotension, shock, fatigue, low resistance to infection, trauma, stress and hypoglycemia. Excessive cortisol activity may lead to a suppressed immune response, impaired glucose tolerance, diabetes, obesity, fatty liver disease, depressed mood, psychosis, wasting of the arms and legs, edema, fatigue, hypertension and other problems. Pre-clinical and clinical data suggest that cortisol may reduce the patient's own immune response to oncogenesis and shield certain cancer cells from the apoptotic effects of chemotherapy. 

The challenge in regulating excessive levels of cortisol is that destroying the ability of the body to make cortisol can cause serious harm. To have a viable therapeutic effect, a medication must modulate cortisol's effects without suppressing them below normal levels or disrupting the body's normal cortisol rhythm, in which cortisol levels rise at awakening and decrease during the day. The action of cortisol can effectively be modulated by the use of compounds that compete with the hormone as it attempts to bind to GR. Mifepristone, the active ingredient in Korlym, is a competitive GR antagonist, as are the compounds in Corcept's portfolio of proprietary compounds.

Because mifepristone works by reducing the binding of excess cortisol to GR, it can modulate the effects of abnormal levels and release patterns of cortisol without compromising cortisol's necessary, normal functions and rhythms. However, mifepristone also binds to the progesterone receptor and thereby terminates pregnancy and may cause other side effects, including irregular vaginal bleeding. Our proprietary, selective cortisol modulators block GR as potently as mifepristone does, but have no affinity for the progesterone receptor and so do not terminate pregnancy or cause other progesterone receptor-related side effects.

Cushing's Syndrome

Background . In February 2012, the FDA approved Korlym ® (mifepristone) 300 mg Tablets as a once-daily oral medication for the treatment of hyperglycemia secondary to hypercortisolism in adult patients with endogenous Cushing's syndrome who have type 2 diabetes mellitus or glucose intolerance and have failed surgery or are not candidates for surgery. FDA approval means that we can market the drug for the approved indication in the United States.

Cushing's syndrome is caused by prolonged exposure of the body's tissues to high levels of cortisol. Sometimes called "hypercortisolism," it is relatively uncommon and most often affects adults aged 20 to 50. An estimated 10 to 15 of every one million people are newly diagnosed with this syndrome each year, resulting in approximately 3,000 new patients and an estimated prevalence of 20,000 patients with Cushing's syndrome in the United States.

Symptoms vary, but most people with Cushing's syndrome have one or more of the following manifestations: high blood sugar, diabetes, high blood pressure, upper body obesity, rounded face, increased fat around the neck, thinning arms and legs, severe fatigue and weak muscles. Irritability, anxiety, cognitive disturbances and depression are also common. Cushing's syndrome can affect every organ system in the body and can be lethal if not treated effectively.

The preferred treatment for Cushing's syndrome patients is surgery, which, if successful, can cure the disease. Depending on the type of tumor, surgery can result in a range of complications and has varying rates of success. In approximately half of the patients, surgery is not successful, either because the tumor cannot be removed completely or the disease returns. 

We received Orphan Drug d esignation from the FDA in 2007 for Korlym for the treatment of endogenous Cushing's syndrome. Orphan Drug d esignation is a special status granted by the FDA to encourage the development of treatments for diseases or conditions that affect fewer than 200,000 patients. Drugs that receive Orphan Drug d esignation receive seven years of marketing exclusivity for the approved indication from the date of drug approval, as well as tax credits for clinical trial costs, marketing application filing fee waivers and assistance from the FDA in the drug development process. Even after an orphan drug is approved for its orphan indication, the FDA can later approve a different drug for the same condition if the FDA concludes that the later drug is safer, more effective or makes a major contribution to patient care.

Commercialization of Korlym . We first made Korlym available to patients on a commercial basis in April 2012. Physicians prescribing Korlym determine the appropriate dose for each patient by assessing tolerability and degree of improvement in manifestations of Cushing's syndrome. In the first six weeks, these manifestations may include changes in glucose control, anti-diabetic medication requirements, insulin levels and psychiatric symptoms. After two months, physicians may assess their patients for improvements in cushingoid appearance, acne, hirsutism, striae and decreased body weight, along with further changes in glucose control.

We sell Korlym using experienced sales representatives , who target the approximately 1,500 endocrinologists who care for a large portion of the Cushing's syndrome population. We also reach patients directly through web-based initiatives and interactions with patient groups. Because a large percentage of the people who suffer from Cushing's syndrome remain undiagnosed or inadequately treated, we have developed and continue to refine and expand programs to educate the medical community and patients about early diagnosis of this syndrome and to increase awareness regarding the role of cortisol modulators to treat th e disease .   In addition, we have a field-based force of medical science liaisons.

We use a specialty pharmacy and a specialty distributor to distribute Korlym and provide logistical support.

We have retained a vendor to help patients with the reimbursement process and to administer our financial assistance programs for uninsured or under-insured patients. We also donate money to independent charitable foundations. These organizations, along with our own programs, help us ensure that no Cushing's syndrome patient is denied access to Korlym for financial reasons.

CORT125134 to Treat Patients with Cushing's Syndrome . By the end of the first quarter of 2016, we plan to begin a Phase 2 trial of our proprietary, selective cortisol modulator CORT125134 to treat patients with Cushing's syndrome. CORT125134 shares Korlym's affinity for GR. D ata from its Phase 1 trial showed that it can potently reverse the effects of the steroid prednisone, a commonly-used GR agonist, on serum osteocalcin, white blood cell counts, glucose metabolism and genetic markers of GR activation. Reversing the effect of prednisone is important, because it mirrors Korlym's competitive antagonism of GR – the essential quality of an effective treatment for patients with Cushing's syndrome. Phase 1 pharmacokinetic data indicate that CORT125134 is suitable for once-daily oral dosing. 

Oncology Program

There is substantial in vitro, in vivo and clinical evidence that cortisol's binding to GR allows certain solid-tumor cancers to resist treatment. In some cancers, such as TNBC , cortisol activity at GR promotes tumor growth. In simple terms , after binding to GR, cortisol stimulates genes that retard cellular apoptosis. One of the foundational hypotheses of our oncology program is that modulating cortisol activity will promote tumor apoptosis.

Our oncology development program also seeks to exploit a second mechanism. Cortisol suppresses the body's immune response.  This is often beneficial, as it lessens the frequency of autoimmune diseases. However, activating, not suppressing, the body's immune system is beneficial in fighting certain cancers. When a patient undergoes chemotherapy that is designed to promote apoptosis in tumor cells, cortisol's immune-suppressive, anti-apoptotic effect is counterproductive. Our expectation is that adding a cortisol modulator to a patient's treatment regimen will help the patient ' s own immune system combat the patient's disease.

Our research has shown that a range of tumor-types express GR and are potential targets for cortisol modulation therapy, among them triple-negative breast, ovarian, prostate and pancreatic cancers, as well as melanoma.

Triple-Negative Breast Cancer (TNBC) . In January 2014 we began a Phase 1/2 trial of Korlym in combination with eribulin to treat metastatic TNBC, a form of the disease in which the three receptors that fuel most tumor growth – estrogen, progesterone and the HER-2/neu gene – are not present. Because the tumor cells lack these receptors, common treatments, such as drugs that target estrogen, progesterone and HER-2 receptors , are ineffective. Approximately 40,000 women are diagnosed with TNBC each year. There is no FDA-approved treatment and neither a targeted treatment nor a preferred standard chemotherapy regimen for relapsed, metastatic, TNBC patients exists. Our research indicates that m ore than 75 percent of the tumors in patients with TNBC express GR and so may respond to therapy using a cortisol modulator.

We have begun the efficacy phase of our Phase 1/2 trial and plan to enroll 20 patients with metastatic TNBC. These patients will receive one 300 mg Korlym tablet each day, combined with eribulin administered on days one and eight of a 21-day cycle. We expect to have results by the end of the second quarter of 2016.

CORT125134 to Treat Patients with Solid-Tumor Cancers . We plan to study CORT125134 in combination with anti-cancer agents to treat a range of solid-tumor cancers. Our Phase 1/2 trial's first stage , which we plan to start by the end of the first quarter of 2016, will identify the maximum tolerated dose of a chemotherapeutic agent and CORT125134. The trial's second stage will test that combination's efficacy against one or more solid-tumor cancers. As we gather data from our own research and the work of our academic collaborators, we may include other anti-cancer agents and solid-tumor cancers in the trial.

We are advancing CORT125134 because it has performed even better than mifepristone in animal models of TNBC and castration-resistant prostate cancer. Mice implanted with TNBC tumor cells were treated with a combination of the chemotherapy drug paclitaxel and CORT125134. Mifepristone in combination with the paclitaxel served as a positive control. The combination of mifepristone and paclitaxel significantly slowed tumor progression. However, the combination of CORT125134 and paclitaxel slowed it more significantly . In a similar experiment, castrated mice implanted with prostate cancer tumor cells were treated with either mifepristone or CORT125134. The outcome was comparable to the TNBC study: When combined with castration (which in humans would be achieved chemically by the administration of an androgen receptor antagonist such as enzalutamide), mifepristone significantly retarded tumor progression, but CORT125134 had a more pronounced positive effect. In addition to superior efficacy to mifepristone, we believe CORT125134 will produce fewer side effects because it does not bind to the progesterone receptor.

Our Proprietary, Selective Cortisol Modulators

CORT125134 is the lead compound in our portfolio of proprietary selective cortisol modulators. There are t h ree structurally distinct series of these compounds, all of which like Korlym, potently block GR but do not block the progesterone, estrogen, androgen or mineralocorticoid receptors. Both the United States Patent & Trademark Office (USPTO) and the European Patent Office (EPO) have issued to us composition of matter patents related to these compounds . One additional composition of matter patent application is pending. See "Business – Intellectual Property."

In addition to our findings with CORT125134, several of our new compounds have demonstrated positive results in animal or in vitro models in various indications, including but not limited to the prevention and reversal of alcohol dependence; Alzheimer's disease; post-traumatic stress disorder; electroconvulsive-induced retrograde amnesia; amyotrophic lateral sclerosis (ALS or Lou Gehrig's Disease); muscular dystrophy; prevention of glucocorticoid-induced neurological damage in premature infants; anti-psychotic-induced weight gain; fatty liver disease; metabolic syndrome; obesity; and breast, ovarian and prostate cancer (in combination with an anti-cancer agent). We are advancing the most promising of these compounds towards the clinic.

We intend to continue our discovery research program with the goal of identifying new selective cortisol modulators, to manufacture and conduct pre-clinical development of one or more of these compounds and to study the most promising of them in humans.

Studies by Independent Investigators

We have , for many years , sought to advance our understanding of cortisol modulation's therapeutic potential by supporting the work of independent academic investigators. These researchers have studied the utility of our proprietary selective cortisol modulators in pre-clinical studies in a wide range of disorders, including Cushing's syndrome, metabolic syndrome, fatty liver disease, alcoholism, post-traumatic stress disorder, Alzheimer's disease, ALS, muscular dystrophy, ovarian cancer, castration-resistance prostatic cancer and TNBC.

Independent researchers are also investigating the utility of mifepristone in pre-clinical and human proof-of-concept studies in a variety of disorders, including alcoholism, post-traumatic stress disorder, Alzheimer's disease, central serous chorioretinopathy, lung cancer, TNBC, castration resistant prostatic cancer, and ovarian cancer.

Clinical Trial Agreements 

Many of our clinical trials are conducted through the use of clinical research organizations (CROs). These organizations oversee clinical trials at various institutions to test the safety and efficacy of our product candidates for the targeted indications. Our Phase 1/2 trial for the study of mifepristone in the treatment of TNBC is being conducted under an agreement with Chiltern International Limited (Chiltern), formerly known as Ockham Development Group Inc. This agreement may be terminated by us upon 60-days written notice to Chiltern or sooner if the parties agree to do so.

Research and Development Spending

We incurred $15.4 million, $18.4 million and $20.5 million of research and development expenses in the years ended December 31, 2015, 2014 and 2013, respectively, which accounted for 29%, 34% and 39% of our total operating expenses in th ose respective years. 

Manufacturing Korlym

We do not have internal manufacturing capabilities and intend to continue to rely on experienced contract manufacturers to produce Korlym and our product candidates. We have a manufacturing agreement with one contract manufacturer, Produits Chimiques Auxiliaires et de Synthese SA (PCAS), to produce mifepristone, the active pharmaceutical ingredient (API) for Korlym. We have a long-term manufacturing and supply agreement with PCAS pursuant to which we agreed to purchase a minimum percentage of our mifepristone requirements.  The amount will depend on our future needs. The initial term of the agreement is five years, with an automatic extension of one year, unless either party gives 12-months prior written termination notice. We have the right to terminate the agreement if PCAS is unable to manufacture mifepristone for nine consecutive months.

We have one tablet manufacturer for Korlym – AAI Pharma Services Corp. (AAI). In April 2014, we entered into an agreement with AAI for the manufacture and package of Korlym tablets. The initial term of this agreement is three years, with consecutive automatic extensions of two years, unless either party gives written termination notice (in the case of AAI Pharma, 18 months prior to the end of the applicable term; in our case, 12 months prior to the end of the applicable term). We have the right to terminate the agreement if (i) AAI Pharma is unable to manufacture our product for four consecutive months or (ii) our product is withdrawn from the market. We have no minimum purchase obligations under this agreement.

Competition for Korlym

Korlym competes with established treatments, including surgery, radiation and other approved medicines including "off-label" uses of drugs such as ketoconazole, an anti-fungal medication. Korlym also competes with Novartis' drug, Signifor ® (pasireotide) Injection, which the FDA approved in December 2012 for the treatment of adult patients with Cushing's disease (a subset of Cushing's syndrome that afflicts approximately 70 percent of Cushing's syndrome patients ) who are not candidates for pituitary surgery or for whom surgery did not work. 

Korlym may also experience competition from compounds under development for Cushing's syndrome. For example, Strongbridge Biopharma plc has received Orphan Drug designation in the United States and the EU for the use of levoketoconazole, a chiral form of ketoconazole, to treat Cushing's syndrome and has begun a Phase 3 clinical trial in Europe and the United States for this indication.

Intellectual Property

Patents and other proprietary rights are important to our business. It is our policy to seek patent protection for our inventions, and to rely upon trade secrets, know-how, continuing technological innovations and licensing opportunities to develop and maintain our competitive position.

Mifepristone . The composition of matter patent covering mifepristone has expired. The only other FDA-approved use of mifepristone is to terminate pregnancy. The FDA has imposed significant restrictions on the use of mifepristone to terminate pregnancy. To protect our market for Korlym we plan to rely on (1) the exclusive marketing rights conferred as a benefit of Orphan Drug d esignation in the United States, (2) the restrictions imposed by the FDA on the use of mifepristone to terminate pregnancy, (3) the different patient populations, administering physicians and treatment settings between the use of mifepristone to terminate pregnancy and to treat Cushing's syndrome and (4) our method of use patents described below.

Oncology. We have an exclusive license agreement with the University of Chicago to patents covering the use of cortisol modulators in the treatment of triple-negative breast cancer, as well as patent applications covering their use in the treatment of castration-resistant prostate cancer. See "Business – License Agreements."

Method of Use Patents . We own issued U.S. patents for the use of cortisol modulators in the treatment of mild cognitive impairment, the prevention and treatment of stress disorders, improving the therapeutic response to electroconvulsive therapy, the treatment of delirium, the treatment of catatonia, the treatment of psychosis with Interferon-Alpha therapy, inhibiting cognitive deterioration in adults with Down's Syndrome, the treatment of weight gain following treatment with antipsychotic medication, the treatment of gastroesophageal reflux disease, the treatment of migraine headaches, the treatment of neurological damage in premature infants, and the treatment of diseases using combination steroid and GR antagonist therapy. We also own a method of use patent for optimizing mifepristone levels in plasma serum in patients suffering from mental disorders. The expiration dates of these patents and their foreign counterparts range from 2020 to 2034.

In addition, we have three U.S. method-of-use applications covering certain cortisol modulators, including the treatment of patients suffering from mental disorders by optimizing mifepristone absorption, muscular dystrophy and ALS.

We estimate that the expiration dates of the patents that could issue from these applications and their foreign counterparts range from 2029 to 2033.

Composition of Matter Patents Covering Our Proprietary, Selective Cortisol Modulators. We have eight U.S. composition of matter patents containing claims relating to three structurally distinct series of next-generation cortisol modulators. Four of these patents have issued in Europe, with an additional U.S. application pending . The expiration dates of these patents and their foreign counterparts range from 2026 to 2033.

We have also filed, where we deemed appropriate, foreign patent applications corresponding to our U.S. patents and applications. However, we cannot assure you that any of our patent applications will result in the issuance of patents, that any issued patent will include claims of the breadth sought in these applications, or that competitors or other third-parties will not successfully challenge or circumvent our patents if they are issued.

W e do not have a patent with claims directed to the composition of mifepristone. Our rights under our issued patents related to mifepristone cover only the use of that compound in the treatment of specific diseases.

The patent positions of companies in the pharmaceutical industry are highly uncertain, involve complex legal and factual questions and have been and continue to be the subject of much litigation. Our product candidates may give rise to claims that we infringe on the products or proprietary rights of others. If it is determined that our drug candidates infringe on others' patent rights, we may be required to obtain licenses to those rights. If we fail to obtain licenses when necessary, we may experience delays in commercializing our product candidates while attempting to design around other patents, or determine that we are unable to commercialize our product candidates at all. Some of our patents may be challenged. If despite our defense a challenged patent is invalidated, we could be subject to additional competition. If we become involved in intellectual property litigation, we are likely to incur considerable costs in defending or prosecuting the litigation. We believe that our patents are valid and that we do not currently infringe any third - party's patents or other proprietary rights, and we are not obligated to pay royalties relating to the use of intellectual property to any third - party other than Stanford University and the University of Chicago.

License Agreements

We have exclusively licensed three issued U.S. patents from Stanford University for the use of cortisol modulators, including mifepristone in the treatment of psychotic depression, cocaine-induced psychosis and early dementia, including early Alzheimer's disease. We are required to make milestone payments and pay royalties to Stanford University on sales of products commercialized under these patents. Milestone payments are creditable against future royalties. Our license will end upon expiration of the related patents in 2018 and 2019 or upon notification by us to Stanford.

We have also exclusively licensed from the University of Chicago two issued U.S. patents for the use of cortisol modulators in the treatment of triple-negative breast cancer , and a second patent family with applications in the U nited S tates and Europe having claims directed to the use of cortisol modulators to treat castration-resistant prostate cancer. We are required to pay the University of Chicago customary milestone fees and royalties on revenue from products commercialized under the issued patents or patents that may issue pursuant to the pending applications. Our license will end upon expiration of the related patents in 2031 and 2033 or upon notification by us to the University of Chicago.

Government Regulation

Prescription pharmaceutical products are subject to extensive pre- and post-approval regulation, including regulations that govern the testing, manufacturing, safety, efficacy, labeling, storage, record keeping, advertising, and promotion of the products under the Federal Food, Drug and Cosmetic Act. All of our product candidates will require regulatory approval by government agencies prior to commercialization. The process required by the FDA before a new drug may be marketed in the United States generally involves the

following: completion of preclinical laboratory and animal testing; submission of an IND, which must become effective before clinical trials may begin; performance of adequate and well-controlled human clinical trials to establish the safety and efficacy of the proposed drug or biologic's intended use; and, in the case of a new drug, approval by the FDA of an NDA. The process of complying with these and other federal and state statutes and regulations in order to obtain the necessary approvals and subsequently complying with federal and state statutes and regulations involves significant time and expense.

Preclinical studies are generally conducted in laboratory animals to evaluate the potential safety and the efficacy of a product. Drug developers submit the results of preclinical studies to the FDA as a part of an IND, which must be approved before beginning clinical trials in humans. If it is anticipated that the clinical trial will be conducted in Europe, a Clinical Trial Authorization (CTA) must be submitted and approved by the appropriate European regulatory agency prior to the commencement of the study. Typically, human clinical trials are conducted in three sequential phases that may overlap.

The FDA and the Institutional Review Boards closely monitor the progress of each of the three phases of clinical trials that are conducted in the United States and may reevaluate, alter, suspend or terminate the testing at any time for various reasons, including a belief that the subjects are being exposed to an unacceptable health risk. The FDA may also require that additional studies be conducted, such as studies demonstrating that the drug being tested does not cause cancer.

After Phase 3 trials are completed, drug developers submit the results of preclinical studies, clinical trials, formulation studies and data supporting manufacturing to the FDA in the form of an NDA for approval to commence commercial sales. The FDA reviews all NDAs submitted before it accepts them for filing. The FDA may request additional information rather than accept an NDA for filing. If the FDA accepts an NDA for filing, it may grant marketing approval, request additional information or deny the application if it determines that the application does not meet regulatory approval criteria. Once an NDA has been accepted for filing, by law the FDA has 180 days to examine the application and respond to the applicant. However, the review process is often significantly extended by FDA requests for additional information or clarification. Under the Prescription Drug User Fee Act, the FDA has a goal of responding to NDAs within ten months of the filing date for standard review, and 6 months for priority review if a sponsor shows that its drug candidate provides a significant improvement compared to marketed drugs. FDA approvals may not be granted on a timely basis, or at all.

If the FDA approves an NDA, the subject drug becomes available for physicians to prescribe in the United States.  Once approved, the FDA may withdraw the product approval if compliance with pre- and post-approval regulatory standards is not maintained. The drug developer must submit periodic reports to the FDA. Adverse experiences with the product must be reported to the FDA and could result in the imposition of marketing restrictions through labeling changes or product removal. Product approvals may be withdrawn if problems with safety or efficacy occur after the product reaches the marketplace. In addition, the FDA may require post-marketing studies, referred to as Phase 4 studies, to monitor the effect of approved products, and may limit further marketing of the product based on the results of these post-approval studies.

Facilities used to manufacture drugs are subject to periodic inspection by the FDA and other authorities where applicable, and must comply with current Good Manufacturing Practices regulations (cGMP). Failure to comply with the statutory and regulatory requirements subjects the manufacturer to possible legal or regulatory action, such as suspension of manufacturing, seizure of product or voluntary recall of a product.

With respect to post-approval product advertising and promotion, the FDA imposes a number of complex regulations on entities that advertise and promote pharmaceuticals, which include, among others, standards and regulations for direct-to-consumer advertising, off-label promotion, industry sponsored scientific and educational activities, and promotional activities involving the Internet. The FDA has very broad enforcement authority under the Federal Food, Drug and Cosmetic Act, and failure to abide by these regulations can result in penalties including the issuance of a warning letter directing a company to correct deviations from FDA standards, a requirement that future advertising and promotional materials be pre-cleared by the FDA, and state and federal civil and criminal investigations and prosecutions.

In addition to studies requested by the FDA after approval, a drug developer may conduct other studies to explore use of the approved compound for treatment of new indications. The purpose of these trials and studies and related publications is to broaden the application and use of the drug and its acceptance in the medical community. Data supporting the use of a drug for these new indications

must be submitted to the FDA in a new or supplemental NDA that must be approved by the FDA before the drug can be marketed for the new indications.

Orphan Drug Designation

We have received Orphan Drug designation for Korlym for the treatment of endogenous Cushing's syndrome in the United States. Orphan Drug designation provides special status to a product to treat a rare disease or condition providing that the product meets certain criteria. Orphan designation qualifies the sponsor of the product for the tax credit and marketing incentives of the Orphan Drug Act, including seven years of exclusive marketing rights for the specific drug for the orphan indication, if it receives the first regulatory approval for that indication, with limited exceptions. A marketing application for a prescription drug product that has been designated as a drug for a rare disease or condition is not subject to a prescription drug user fee unless the application includes an indication for other than a rare disease or condition. Orphan Drug designation does not prevent competitors from developing or marketing different drugs for an indication. It also does not convey an advantage in, or shorten the duration of, the review and approval process for a drug by the applicable regulatory authority.

Marketing Approvals outside the United States   

We are not seeking regulatory approval to market Korlym outside the United States. If we do so, we (or our potential future partners) will have to complete an approval process similar to the U.S. approval process in foreign target markets for our product candidates before we can commercialize our product candidates in those countries. The approval procedure and the time required for approval vary from country to country and can involve additional testing. Foreign approvals may not be granted on a timely basis, or at all. Regulatory approval of pricing is required in most countries other than the United States. The prices approved may be too low to generate an acceptable return to us.

Coverage and Reimbursement

Sales of our products will depend, in part, on the extent to which our products will be covered by third-party payors, such as government health care programs, commercial insurance and managed healthcare organizations. Although this trend has not had a material impact on the amount or timing of our revenues, these third-party payors are increasingly limiting coverage and reducing reimbursements for medical products and services. In addition, the U.S. government, state legislatures and foreign governments have continued implementing cost-containment programs, including price controls, restrictions on coverage and reimbursement and requirements for substitution of generic products. Adoption of price controls and cost-containment measures, and adoption of more restrictive policies in jurisdictions with existing controls and measures, could limit our net revenue and results. Decreases in third-party reimbursement for our products or a decision by a third-party payor to not cover our products could reduce physician utilization of our products and have a material adverse effect on our sales, results of operations and financial condition.

Other Healthcare Laws 

We are subject to healthcare regulation and enforcement by the federal government and the states and foreign governments in which we conduct our business. These laws include, without limitation, state and federal anti-kickback, fraud and abuse, false claims, privacy and security and physicians sunshine laws and regulations.  

The federal Anti-Kickback Statute prohibits, among other things, any person from knowingly and willfully offering, soliciting, receiving or providing remuneration, directly or indirectly, to induce either the referral of an individual, for an item or service or the purchasing or ordering of a good or service, for which payment may be made under federal healthcare programs such as the Medicare and Medicaid programs. The Anti-Kickback Statute is subject to evolving interpretations. In the past, the government has enforced the Anti-Kickback Statute to reach large settlements with healthcare companies based on sham consulting and other financial arrangements with physicians. Further, the recently enacted Patient Protection and Affordable Care Act, as amended by the Health Care and Education Reconciliation Act, or collectively, the PPACA, among other things, amends the intent requirement of the federal Anti-Kickback Statute and the criminal statute governing healthcare fraud statutes. A person or entity no longer needs to have actual knowledge of these statutes or specific intent to violate them. In addition, the PPACA provides that the government may assert that a claim including items or services resulting from a violation of the federal Anti-Kickback Statute constitutes a false or fraudulent claim for purposes of the federal False Claims Act or federal civil money penalties statute. The majority of states also have anti-kickback laws which establish similar prohibitions and in some cases may apply to items or services reimbursed by any third-party payor, including commercial insurers.

Additionally , the civil False Claims Act prohibits knowingly presenting or causing the presentation of a false, fictitious or fraudulent claim for payment to the U.S. government. Actions under the False Claims Act may be brought by the Attorney General or as a qui tam action by a private individual in the name of the government. Violations of the False Claims Act can result in very significant monetary penalties and treble damages. The federal government is using the False Claims Act, and the accompanying threat of significant liability, in its investigation and prosecution of pharmaceutical and biotechnology companies throughout the country, for example, in connection with the promotion of products for unapproved uses and other sales and marketing practices. The government has obtained

multi-million and multi-billion dollar settlements under the False Claims Act in addition to individual criminal convictions under applicable criminal statutes. Given the significant size of actual and potential settlements, it is expected that the government will continue to devote substantial resources to investigating healthcare providers' and manufacturers' compliance with applicable fraud and abuse laws.

In addition, there has been a recent trend of increased federal and state regulation of payments made to physicians and other healthcare providers. The PPACA, among other things, imposes new reporting requirements on drug manufacturers for payments made by them to physicians and teaching hospitals, as well as ownership and investment interests held by physicians and their immediate family members. Failure to submit required information may result in civil monetary penalties of up to an aggregate of $150,000 per year (or up to an aggregate of $1 million per year for "knowing failures"), for all payments, transfers of value or ownership or investment interests that are not timely, accurately and completely reported in an annual submission. Drug manufacturers are required to submit reports to the government by the 90 th day of each calendar year. Certain states also mandate implementation of commercial compliance programs, impose restrictions on drug manufacturer marketing practices and/or require the tracking and reporting of gifts, compensation and other remuneration to physicians.

The shifting commercial compliance environment and the need to build and maintain robust and expandable systems to comply with different compliance and/or reporting requirements in multiple jurisdictions increase the possibility that a healthcare company may violate one or more of the requirements. If our operations are found to be in violation of any of such laws or any other governmental regulations that apply to us, we may be subject to penalties, including, without limitation, civil and criminal penalties, damages, fines, the curtailment or restructuring of our operations, exclusion from participation in federal and state healthcare programs and imprisonment, any of which could adversely affect our ability to operate our business and our financial results.

Employees

We are managed by a core group of experienced pharmaceutical executives with a track record of bringing new drugs to market. To facilitate advancement of development programs, we also enlist the expertise of associates and advisors with extensive pharmaceutical development experience.

As of December 31, 2015, we had 78 full-time employees, five part-time employees and 13 long-term contract staff.  Four of our employees have M.D.s. We consider our employee relations to be good. None of our employees are covered by a collective bargaining agreement. 

About Corcept

We were incorporated in the State of Delaware on May 13, 1998. Our registered trademarks include Corcept ® , Korlym ® and CORLUX ® . Corluxin ®   is a registered trademark in the EU; the application for this trademark is pending in the United States. Other service marks, trademarks and trade names referred to in this document are the property of their respective owners.

Available Information

We are subject to the information requirements of the Securities Exchange Act of 1934, as amended, and we therefore file periodic reports, proxy statements and other information with the SEC relating to our business, financial statements and other matters.  The reports, proxy statements and other information we file may be inspected and copied at prescribed rates at the SEC's Public Reference Room, 100 F Street, N.E., Washington, D.C. 20549, on official business days during the hours of 10:00 A.M. to 3:00 P.M.  You may obtain information on the operation of the SEC's Public Reference Room by calling the SEC at 1-800-SEC-0330. The SEC also maintains an Internet site that contains reports, proxy statements and other information regarding issuers like us that file electronically with the SEC. The address of the SEC's Internet site is www.sec.gov . For more information about us, please visit our website at www.corcept.com . You may also obtain a free copy of our annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and amendments to those reports on the day the reports or amendments are filed with or furnished to the SEC by visiting our website at www.corcept.com . The information found on, or otherwise accessible through, our website, is not incorporated information, and does not form a part of, this Form 10-K.

I TEM 1A. RISK FACTORS

An investment in our common stock involves significant risks. You should carefully consider the risks described below and the other information in this Annual Report on Form 10- K , including our financial statements and related notes, before you decide to invest in our common stock. If any of the following risks or uncertainties actually occurs, our business, results of operations or financial condition could be materially harmed, the trading price of our common stock could decline and you could lose all or part of your investment. The risks and uncertainties described below are those that we currently believe may materially affect us; however, they may not be the only ones that we face. Additional risks and uncertainties of which we are unaware or currently deem immaterial may also become important factors that may harm our business.

Risks Related to the Commercialization of Korlym

We depend heavily on the success of Korlym. If we are unable to increase revenue of Korlym to the levels that investors expect, or experience significant delays in doing so, our stock price will likely decline.

We anticipate that for the foreseeable future our ability to generate meaningful revenue and fund our commercial operations and development programs will be solely dependent on the successful commercialization of Korlym. Many factors could hamper our efforts to commercialize Korlym, including:

Failure to meet revenue expectations of investors could cause our stock price to decline. 

Physicians may accept Korlym slowly or may never accept it, which would adversely affect our financial results.

Physicians will prescribe Korlym only if they determine, based on experience, clinical data, side effect profiles and other factors, that it is preferable to other treatments, even if those products are not approved for Cushing's syndrome. Because Cushing's syndrome is rare, most physicians are inexperienced in the care of patients with the illness and it may be difficult to persuade them to prescribe a newer treatment, such as Korlym, even with clinical trial results that suggest it may be a compelling treatment.

Other factors that may affect the commercial success of Korlym include:

The failure of Korlym to achieve commercial success would prevent us from generating sufficient revenue to fully fund our commercial and development activities .

The Orphan Drug designation for Korlym may not prevent competition from companies that develop mifepristone or other compounds for the treatment of Cushing's syndrome. These companies may have significantly more resources than we do. Competition from them could limit our revenue from the commercialization of Korlym for the treatment of Cushing's syndrome or other indications.  

Although we have received Orphan Drug designation in the United States, we cannot be assured that we will realize the potential benefits of the designation. Even after an orphan drug is approved for its orphan indication, the FDA can subsequently approve a different drug for the same condition if it concludes that the later drug is safer, more effective or makes a major contribution to patient care.  Upon

expiration of the orphan drug exclusivity period, we may be subject to competition from manufacturers offering a generic form of Korlym at a lower price, in which case our business could be harmed.

Notwithstanding Korlym's Orphan Drug designation in the United States, in 2012 Novartis received approval in both the United States and the European Union (EU) to market its somatostatin analogue Signifor for adult patients with Cushing's disease (a subset of Cushing's syndrome that afflicts approximately 70 percent of all Cushing's syndrome patients) for whom pituitary surgery is not an option or has not been curative. Novartis also announced that it is undertaking an investigational study of an experimental compound to determine whether it can safely reduce the level of urinary free cortisol in patients with Cushing's disease and to examine the compound's safety. Novartis has substantially more resources and experience than we do and may provide significant competition.

We are aware that Laboratoire HRA Pharma (HRA) received Orphan Drug designation in the United States and the EU for the use of mifepristone to treat a subtype of Cushing's syndrome. HRA had begun a Phase 2 clinical trial in Europe and the United States for this indication, which has been terminated. We are aware that Strongbridge Biopharma plc (Strongbridge) has received Orphan Drug designation in the United States and the EU for the use of levoketoconazole to treat Cushing's syndrome. Strongbridge has begun a Phase 3 clinical trial in Europe and the United States for this indication. We are also aware that Exelgyn Laboratories, which operates as a subsidiary of Medi Challenge (Pty) Ltd., received Orphan Drug designation for mifepristone to treat Cushing's syndrome in the EU, but it has stated that it has not yet conducted any clinical trials.

If we cannot continue to obtain acceptable prices or adequate coverage and reimbursement for Korlym from third-party payors, we will be unable to generate significant revenues.

The commercial success of Korlym depends on whether third-party coverage and reimbursement is available. Government payors, including Medicare, Medicaid and the Veterans Administration, health maintenance organizations and other third-party payors are increasingly attempting to contain healthcare costs by limiting both coverage and the level of reimbursement of new medicines, and, as a result, they may not cover or provide adequate payment for Korlym. Our dependence on the commercial success of Korlym makes us particularly susceptible to cost containment efforts. Accordingly, even though Korlym has been approved for commercial sale, unless government and other third-party payors continue to provide adequate and timely coverage and reimbursement, physicians may not prescribe it and patients may not purchase it. In addition, meaningful delays in insurance coverage for individual patients may increase our costs and reduce our revenues.   

In some foreign markets, pricing and profitability of prescription pharmaceuticals are subject to government control. In the United States, we expect that there will continue to be federal and state proposals for similar controls. Also, the trends toward managed health care in the United States and recent laws and legislation intended to reduce the cost of government insurance programs could significantly influence the purchase of health care services and products and may result in lower prices for Korlym or the exclusion from reimbursement programs.

The Patient Protection and Affordable Care Act (PPACA), which was passed in 2010 , included the following measures:

The PPACA provisions on comparative clinical effectiveness research extended the initiatives of the American Recovery and Reinvestment Act of 2009, also known as the stimulus package, which included $1.1 billion in funding to study the comparative effectiveness of health care treatments. This stimulus funding was designated for, among other things, conducting, supporting or synthesizing research that compares and evaluates the risks and benefits, clinical outcomes, effectiveness and appropriateness of products. The PPACA also appropriated additional funding to comparative clinical effectiveness research. Although Congress has indicated that this funding is intended to improve the quality of health care, it remains unclear how the research will impact current

Medicare coverage and reimbursement or how new information will influence other third-party payor policies. It also is unclear what the full impact of PPACA's extension of coverage to previously uninsured individuals will be on the demand for our product.

Other legislative and regulatory changes have been proposed and adopted in the United States since the PPACA was enacted. In August 2011, the Budget Control Act of 2011 among other things, created the Joint Select Committee on Deficit Reduction to recommend proposals in spending reductions to Congress. The Joint Select Committee did not achieve its targeted deficit reduction of at least $1.2 trillion for the years 2013 through 2021, triggering the legislation's automatic reduction to several government programs. This includes aggregate reductions to Medicare payments to providers of two percent per fiscal year, which went into effect on April 1, 2013 and, due to subsequent legislative amendments to the statute, will stay in effect through 2025 unless additional Congressional action is taken. On January 2, 2013, President Obama signed into law the American Taxpayer Relief Act of 2012, which further reduced Medicare payments to several providers, including hospitals, imaging centers and cancer treatment centers, and increased the statute of limitations period for the government to recover overpayments to providers from three to five years. On February 1, 2016, the Centers for Medicare & Medicaid Services, or CMS, published a final rule that revised certain requirements involved in our calculation of prices we report in connection with our participation in government reimbursement programs so that Korlym will be eligible for purchase by, or qualify for partial or full reimbursement from, Medicaid and other government programs. The extent to which this rule may alter our reported prices and estimated rebates and chargebacks under government programs remains unclear.

These new laws and the regulations and policies implementing them, as well as other healthcare reform measures that may be adopted in the future, may have a material adverse effect on our industry generally and on our ability to successfully develop and commercialize our products.

Public perception of mifepristone may limit our ability to sell Korlym.

The active ingredient in Korlym, mifepristone, is approved by the FDA in another drug for the termination of early pregnancy. As a result, mifepristone has been and continues to be the subject of considerable ethical and political debate in the United States and elsewhere. Public perception of mifepristone may limit our ability to engage alternative manufacturers and may limit the commercial acceptance of Korlym by patients and physicians. Even though we have taken measures to minimize the likelihood of the prescribing of Korlym to a pregnant woman, physicians may choose not to prescribe Korlym to a woman simply to avoid any risk of unintentionally terminating a pregnancy.   

We have no manufacturing capabilities and we currently depend on two third - parties, both of which are single-source suppliers, to manufacture the active ingredient and the tablets for Korlym. If these suppliers are unable or unwilling to continue manufacturing Korlym and we are unable to contract quickly with alternative sources, or if these third-party manufacturers fail to comply with FDA regulations or otherwise fail to meet our requirements, our business will be harmed.

We have no manufacturing capabilities and depend solely on single-source third-parties to manufacture Korlym. We depend on PCAS, a third-party manufacturer, to supply all of the API in Korlym. We depend on AAI, another third-party manufacturer, to produce all of our Korlym tablets. We have entered into long-term agreements with these manufacturers. However, if either of them is unable or unwilling to meet our future requirements, we may not be able to manufacture our product in a timely manner. Our current arrangements with these manufacturers are terminable by such manufacturers, subject to certain notice provisions.   

The facilities used by our contract manufacturers to manufacture our product must be approved by the FDA. We do not control the manufacturing processes of, and are completely dependent on, our contract manufacturing partners for compliance with the regulatory requirements known as current good manufacturing practices (cGMPs). If our contract manufacturers cannot successfully manufacture material that conforms to our specifications and the strict requirements of the FDA or others, they will not be able to maintain regulatory approval for their manufacturing facilities. In addition, we have no control over the ability of our contract manufacturers to maintain adequate quality control, quality assurance and qualified personnel. If the FDA or a comparable foreign regulatory authority does not approve these facilities for the manufacture of our products or if it withdraws any such approval, we may need to find alternative manufacturing facilities, which would significantly hamper our ability to develop, obtain regulatory approval for or market our products. In addition, sanctions could be imposed on us, including fines, injunctions, civil penalties, failure of regulatory authorities to grant marketing approval of our product candidates, delays, suspension or withdrawal of approvals, seizures or recalls of products, operating restrictions and criminal prosecutions, any of which could harm our business. If our suppliers fail to manufacture tablets on a timely basis in the quantities that we require, or fail to maintain manufacturing capabilities that meet FDA standards, we may exhaust our Korlym inventory and will not be able to generate revenue.

If we or others identify previously unknown, serious side effects of Korlym or mifepristone, we may be required to perform lengthy additional clinical trials, change the labeling of Korlym or withdraw it from the market.

The FDA's approval of Korlym required that we conduct a study of the interactions between Korlym and ketoconazole, an anti-fungal agent sometimes used to treat patients with Cushing's syndrome.  The data from this study are currently being analyzed. It also

requires us to study drug utilization to better characterize the reporting rates of adverse events associated with the long-term use of Korlym.  If we or others identify previously unknown, serious side effects of Korlym or mifepristone:

Any of these events could harm or prevent sales of Korlym or could increase the costs and expenses of commercializing and marketing Korlym.

We may not have adequate insurance to cover our exposure to product liability claims.

We may be subject to product liability or other claims based on allegations that the use of Korlym has resulted in adverse effects or that our product candidates are not effective, whether by participants in our clinical trials for Korlym or other product candidates, or by patients using Korlym. A product liability claim may damage our reputation by raising questions about Korlym or any of our product candidates' safety or efficacy and could limit our ability to sell a product by preventing or interfering with product commercialization. In some cases, less common adverse effects of a pharmaceutical product are not known until long after the FDA approves the product for marketing. The active ingredient in Korlym is used to terminate pregnancy. Therefore, clinicians using the medicine in our clinical trials and physicians prescribing the medicine to women with childbearing potential must take strict precautions to ensure that the medicine is not administered to pregnant women. The failure to observe these precautions could result in significant product liability claims.

We have only limited product liability insurance coverage, with limits that we believe to be customary for a company marketing a single pharmaceutical product. We intend to expand our product liability insurance coverage to any product candidates for which we obtain marketing approval. However, this insurance may be prohibitively expensive or may not fully cover our potential liabilities. Our inability to obtain adequate insurance coverage at an acceptable cost could prevent or inhibit the commercialization of Korlym or our product candidates, or result in meaningful underinsured or uninsured liability. Defending a lawsuit could be costly and significantly divert management's attention from conducting our business. If we were successfully sued for injury caused by our product candidates, our liability could exceed our total assets.

We are subject to ongoing and continued regulatory review. If we are unable to maintain regulatory approval of Korlym, or if we fail to comply with regulatory requirements, we will be unable to generate revenue or may be subject to penalties and our business will be harmed.

Even after we obtain U.S. regulatory approval for a product, the FDA may impose significant restrictions on the uses for which the product may be marketed or on the conditions of approval, such as potentially costly post-approval studies and surveillance, including Phase 4 clinical trials, to monitor the product's safety and efficacy. The FDA's approval of Korlym was subject to limitations on the indicated uses for which the product may be marketed and requirements for post-marketing follow-up studies and information reporting, as noted above. If we violate any of the restrictions or fail to meet the conditions of approval, the FDA could withdraw its approval. 

We are subject to ongoing obligations and continued regulatory review by the FDA and other regulatory authorities in the United States and other countries with respect to the research, testing, manufacturing, labeling, distribution, adverse event reporting, storage, selling, advertising, promotion, recordkeeping and marketing of products. These requirements include submissions of safety and other post-marketing information and reports, annual updates on manufacturing activities and continued compliance with cGMPs, and current good clinical practices (cGCPs), for any clinical trials that we conduct post-approval. cGMPs and cGCPs are regulations and guidelines enforced by the FDA and comparable foreign regulatory authorities through periodic inspections of manufacturing sites, trial sponsors, clinical investigators and clinical sites. Later discovery of previously unknown problems with a product, including adverse events of unanticipated severity or frequency, or with our third-party manufacturers or manufacturing processes, or failure to comply with FDA regulations and other applicable foreign and U.S. regulatory requirements may result in, among other things, untitled letters, warning letters, civil and criminal penalties, injunctions, holds on clinical trials, product seizure or detention, refusal to permit the import or export of products, restrictions on product marketing, withdrawal of the product from the market, voluntary or mandatory product recalls, total or partial suspension of production, refusal to approve pending New Drug Applications (NDAs) or supplements to approved NDAs, and suspension or revocation of product approvals.

The FDA's policies may change and additional governmental regulations may be enacted that could prevent, limit or delay regulatory approval of our product candidates. If we are slow or unable to adapt to changes in existing requirements or the adoption of new requirements or policies, or if we are not able to maintain regulatory compliance, we may place at risk the FDA marketing approval for Korlym and any other marketing approval that we may obtain, which would adversely affect our business, prospects and ability to achieve or sustain profitability. 

We may be subject to civil or criminal penalties if we market Korlym in a manner that violates FDA regulations or health care fraud and abuse laws.

In the United States, we are subject to FDA regulations governing the promotion of health care products.  Although physicians are permitted, based on their medical judgment, to prescribe drugs for indications other than those approved by the FDA, manufacturers are prohibited from promoting their products for such "off-label" uses. In the United States, we market Korlym for treatment of hyperglycemia secondary to hypercortisolism in adult patients with endogenous Cushing's syndrome who have type 2 diabetes mellitus or glucose intolerance and have failed surgery or are not candidates for surgery and provide promotional materials and training programs to physicians regarding the use of Korlym for this indication. Although we believe our marketing materials and training programs for physicians do not constitute "off-label" promotion of Korlym, the FDA may disagree. If the FDA determines that our promotional materials, training or other activities by our employees or agents constitute "off-label" promotion of Korlym, it could request that we modify our training or promotional materials or other activities or subject us to regulatory enforcement actions, including the issuance of an untitled letter, a warning letter, injunction, seizure, civil fine and criminal penalties. It is also possible that other federal or state enforcement authorities might take action if they believe that the alleged improper promotion led to the submission and payment of claims for an unapproved use, which could result in significant fines or penalties under other statutory authorities, such as laws prohibiting false claims for reimbursement. Even if it is later determined that we are not in violation of these laws, we may be faced with negative publicity, incur significant expenses defending our position and have to divert significant management resources from other matters.

In addition, there are health care fraud and abuse regulations and enforcement by both the federal government and the states in which we conduct our business. The laws that may affect our ability to operate include:

The risk of our being found in violation of these laws and regulations is increased by the fact that many of them have not been fully interpreted by the regulatory authorities or the courts, and their provisions are open to a variety of interpretations. Moreover, recent health care reform legislation has strengthened these laws. For example, the PPACA, among other things, amended the intent requirement of the federal anti-kickback and criminal health care fraud statutes; a person or entity no longer needs to have actual knowledge of these statutes or specific intent to violate them. In addition, the PPACA provided that the government may assert that a claim including items or services resulting from a violation of the federal anti-kickback statute constitutes a false or fraudulent claim for purposes of the false claims statutes. If our operations are found to be in violation of any of the laws described above or any other governmental regulations that apply to us, we may be subject to penalties, including civil and criminal penalties, damages, fines, exclusion from governmental health care programs, and the curtailment or restructuring of our operations, any of which could adversely affect our ability to operate our business and our financial results.

A break-down or breach of our information technology systems could subject us to liability or interrupt the operation of our business.

Despite the implementation of security measures, our internal computer systems and those of third - parties with which we contract are vulnerable to damage from cyber-attacks, computer viruses, unauthorized access, natural disasters, terrorism, war and telecommunication and electrical failures. System failures, accidents or security breaches could cause interruptions in our operations, and could result in a material disruption of our clinical and commercialization activities and business operations, in addition to possibly requiring substantial expenditures of resources to remedy. The loss of clinical trial data could result in delays in our regulatory approval efforts and significantly increase our costs to recover or reproduce the data. To the extent that any disruption or security breach were to result in a loss of, or damage to, our data or applications, or inappropriate disclosure of confidential or proprietary information, we could incur liability and our product research, development and commercialization efforts could be delayed.

The occurrence of a catastrophic disaster or other similar events could cause damage to our own or our manufacturers' facilities and equipment, which could require us to cease or curtail operations.

Our business is vulnerable to damage from various types of disasters or other similarly disruptive events, including earthquake, fire, flood, power loss and communications failures. For example, our headquarters are located in the San Francisco Bay Area, which is earthquake-prone, and our specialty pharmacy and warehouses are located in areas that are subject to severe weather conditions. In addition, political considerations relating to mifepristone may put us and our manufacturers at increased risk for terrorist attacks, protests or other disruptive events. If any disaster or other similar event were to occur, we may not be able to operate our business and our manufacturers may not be able to produce Korlym or our product candidates. Our insurance may not be adequate to cover, and our insurance policies may exclude coverage for, our losses resulting from disasters or other business interruptions.

Risks Related to the Development of our Product Candidates

Clinical drug development is lengthy and expensive and has an uncertain outcome. Results of earlier studies and trials may not be predictive of future trial results.

Clinical development is a long, expensive and uncertain process, and data obtained from clinical trials and supportive studies are susceptible to varying interpretations, which could delay, limit or prevent regulatory approval. The results from early clinical trials may not be predictive of results eventually obtained in later clinical trials. Product candidates in later stages of clinical trials may fail to show the desired safety and efficacy traits despite having progressed through preclinical studies and initial clinical trials. A number of companies in the biopharmaceutical industry have suffered significant setbacks in advanced clinical trials due to lack of efficacy or adverse safety profile of their medication candidate, despite promising results in earlier trials. Clinical trials may not demonstrate sufficient safety and efficacy to obtain regulatory approval. 

Our ongoing Phase 1/2 clinical trial of mifepristone in combination with chemotherapy to treat TNBC is too small to demonstrate definitively the safety or efficacy of mifepristone for that indication. Even if the trial generates positive results, those results would have to be confirmed in at least one substantially larger, more expensive, and lengthier trial if we are to have sufficient basis for seeking regulatory approval. 

Moreover, the commencement and completion of clinical trials may be delayed by many factors that are beyond our control, including:

We could encounter delays if a clinical trial is suspended or terminated by us, the IRBs of the clinical trial sites where such trials are being conducted, the Data Safety Monitoring Board for such trial, or the FDA or other regulatory authorities. Such authorities may impose a suspension or termination due to a number of factors, including failure to conduct the clinical trial in accordance with regulatory requirements or our clinical protocols, inspection of the clinical trial operations or trial site by the FDA or other regulatory authorities resulting in the imposition of a clinical hold, unforeseen safety issues or adverse side effects, failure to demonstrate a benefit from using a drug, changes in governmental regulations or administrative actions or lack of adequate funding to continue the clinical trial.

Over the course of clinical development of any product candidate, we may decide, or the FDA or other regulatory authorities may require us, to pursue clinical or preclinical studies in addition to those we had initially anticipated. Additional trials or studies may require additional funding, the availability of which is not assured. Also, it is possible that additional trials or studies that we decide are necessary or desirable will delay or prevent the completion of our development programs. Even if we are able to conduct all of the clinical trials and supportive studies that we consider appropriate, we may never receive regulatory approval to market other product candidates, including mifepristone for the treatment of TNBC or any other indication.

We depend on third - parties to conduct and manage many of our clinical trials and to perform related data collection and analysis and, if these third - parties do not successfully carry out their contractual duties or meet expected timelines, we may face costs and delays that may prevent or delay us from obtaining regulatory approval for or commercializing our product candidates, which could substantially harm our business.

We rely on clinical investigators and clinical sites to enroll patients and other third - parties such as CROs to manage many of our trials and to perform related data collection and analysis.  We control only certain aspects of these third - parties' activities. Nevertheless, we are responsible for ensuring that each of our studies is conducted in accordance with the prescribed protocol, and the applicable legal, regulatory and scientific standards. Our reliance on third - parties does not relieve us of our regulatory responsibilities. We and these third - parties are required to comply with cGCPs. If we or any of the third - parties working on or conducting our trials fail to comply with applicable cGCPs, the clinical data generated in our clinical trials may be deemed unreliable and the FDA or comparable foreign regulatory authorities may require us to perform additional clinical trials before approval of our marketing applications, if at all. We cannot assure you that upon inspection by a given regulatory authority, such regulatory authority will determine that any of our clinical trials complies with cGCP requirements. In addition, our clinical trials must be conducted with product produced under cGMP regulations. Our failure to comply with these regulations may require us to repeat clinical trials, which would delay the regulatory approval process. Moreover, we may not be able to control the timing of identification and selection of appropriate sites for our planned trials and the amount and timing of resources that the clinical sites that conduct the clinical testing may devote to our clinical trials. If our clinical investigators and clinical sites fail to enroll a sufficient number of patients in our clinical trials or fail to enroll them on our planned schedules, we will be unable to complete our trials or to complete them as planned, which could delay or prevent us from completing the clinical development of mifepristone for the treatment of TNBC or other development programs.

We have agreements with the CRO and consultants conducting and managing our Phase 1/2 trial of mifepristone for the treatment of TNBC and Phase 1 trial of CORT125134, to supervise and monitor clinical site performance and to perform investigator supervision, data collection and analysis for these trials. The conduct of future clinical trials , including our planned Phase 2 studies of CORT125134, may also be conducted through the use of CROs and third - party clinical s ites. We may not be able to maintain relationships with these or other CROs or with the clinical investigators and the clinical sites through the completion of all trial activities without delays in anticipated timing of trial activities or excessive expenditures. If any of our relationships with CROs or other third - parties terminates,

we may not be able to enter into arrangements with alternative CROs or third - parties on commercially reasonable terms, or at all. If these CROs, clinical investigators, clinical sites or other third - parties do not carry out their contractual duties or obligations or fail to meet expected deadlines, or if they need to be replaced or if the quality or accuracy of the clinical data they obtain is compromised due to their failure to adhere to our clinical protocols or regulatory requirements or for other reasons, our clinical trials may be extended, delayed or terminated and we may be unable to obtain regulatory approval for, or successfully commercialize, mifepristone for the treatment of TNBC, or CORT125134 or any of our other next-generation selective cortisol modulators.

We may be unable to obtain and maintain regulatory approvals for our product candidates, including mifepristone for the treatment of TNBC.

We are not permitted to market or promote any of our product candidates before we receive regulatory approval from the FDA or comparable foreign regulatory authorities and, while we have received FDA marketing approval for Korlym, we may be unable to maintain such approval and we may never receive such regulatory approval for any of our product candidates. Obtaining regulatory approval of a new drug is an uncertain, lengthy and expensive process, and success is never guaranteed. Failure can occur at any stage. In order to receive approval from the FDA for a product candidate, we must demonstrate that the new drug product is safe and effective for its intended use and that our manufacturing processes for the product candidate comply with the FDA's cGMPs. These cGMPs include requirements related to production processes, quality control and assurance, and recordkeeping. The FDA has substantial discretion in the approval process for human medicines. The FDA may require substantial additional clinical testing or find our drug products do not satisfy the standards for approval. Our inability or the inability of our suppliers to comply with applicable FDA and other regulatory requirements can result in, among other things, delays in or denials of new product approvals, warning letters, fines, consent decrees restricting or suspending manufacturing operations, injunctions, civil penalties, recall or seizure of products, total or partial suspension of sales, and/or criminal prosecution. Any of these or other regulatory actions could materially harm our business and our financial condition.

Future governmental action or changes in FDA policy or personnel may also result in delays or rejection of an NDA in the United States. In addition, because the only other currently FDA-approved use of mifepristone is the termination of pregnancy, we expect that the label for mifepristone for any indication will include, as Korlym's does, some limitations, including a so-called "black-box" warning that it should not be used by pregnant women or women seeking to become pregnant.

If we receive regulatory approval for our future product candidates, including mifepristone for the treatment of TNBC, we will be subject to ongoing FDA obligations and continued regulatory oversight and review, such as continued safety reporting requirements; and we may also be subject to additional FDA post-marketing restrictions and obligations. If we are not able to maintain regulatory compliance, we may not be permitted to market our product candidates and/or may be subject to product recalls or seizures. Any regulatory approvals that we receive for our future product candidates may also be subject to limitations on the indicated uses for which the medicine may be marketed or contain requirements for potentially costly post-marketing follow-up studies. In addition, if the FDA approves any of our product candidates, we will be subject to ongoing and continuing regulatory requirements. 

Failure to obtain regulatory approval in foreign jurisdictions would prevent us from commercializing our product candidates abroad.

We may seek to commercialize our products and product candidates in international markets with the help of one or more partners or on our own. Outside the United States, we may commercialize a product only if we receive a marketing authorization and, in many cases, pricing approval, from the appropriate regulatory authorities, whose approval processes include all of the risks associated with the FDA approval process, and, in some cases, additional risks. The approval procedure varies among countries and can involve additional testing, and the time required to obtain approval may differ from that required to obtain FDA approval. Although we have received Orphan Drug designation in the EU, we are not currently seeking to obtain any foreign approvals.  

Approval by the FDA does not ensure approval by regulatory authorities in other countries, and approval by one foreign regulatory authority does not ensure approval by regulatory authorities in other foreign countries or by the FDA, but a failure or delay in obtaining regulatory approval in one country may have a negative effect on the regulatory process in others. We may not be able to file for regulatory approvals and may not receive necessary approvals to commercialize our product candidates in any foreign market.

We face competition from companies with substantial financial, technical and marketing resources.

The biotechnology and pharmaceutical industries are intensely competitive and subject to rapid and significant technological change. Our present and potential competitors include major pharmaceutical companies, as well as specialized pharmaceutical firms, universities and public and private research institutions. Moreover, we expect competition to intensify as technical advances are made. These competitors, either alone or with collaborative parties, may succeed with the development and commercialization of medicinal products that are superior to and more cost-effective than mifepristone. 

Many of our competitors and related private and public research and academic institutions have greater experience, more financial and marketing resources and larger research and development staffs than we do. In addition, many of these competitors, either alone or together with their collaborative partners, have significantly greater experience than we do in developing human medicines, obtaining regulatory approvals, manufacturing and commercializing products.

Our product candidates may not be effective competitors compared to established treatments and our present or potential competitors may succeed in developing medicinal products that are superior to our product candidates, which could render our product candidates obsolete or non-competitive. If we are unable to establish our product candidates as a superior and cost-effective treatment, we may be unable to commercialize them.

Our efforts to discover, develop and commercialize product candidates beyond Korlym for the treatment of patients with Cushing's syndrome – including our development of mifepristone to treat patients with TNBC – are at an early stage and may fail to successfully commercialize any of them.  

To develop additional sources of revenue, we believe that we must identify and develop new product candidates or new therapeutic uses for mifepristone. The use of cortisol modulators may not be effective to treat any additional indications. Moreover, we could discover that the use of cortisol modulators has unacceptable side effects or is otherwise not safe. Due to the potential for lack of efficacy and side effects inherent in novel compounds and in new uses for existing medications, we are entering multiple compounds into development, which will increase our rate of spending with no assurance that we will be successful in developing new drugs that are safe and effective.

We may not develop or continue to develop product candidates for any of the indications or compounds covered by our patents and patent applications. Typically, there is a high rate of attrition for product candidates in pre-clinical and clinical trials, and our product development efforts may not lead to commercially viable products. For example, although we plan to advance new compounds to the clinic, we may fail to do so.

We may elect to enter into collaboration arrangements with respect to one or more of our product candidates. If we do enter into such an arrangement, we would be dependent on a collaborative partner for the success of the product candidates developed under the arrangement. Any future collaborative partner may fail to successfully develop or commercialize a product candidate under a collaborative arrangement.

We only have significant clinical experience with mifepristone and we may determine that mifepristone is not desirable for uses other than for the treatment of Cushing's syndrome. For example, we do not intend to develop mifepristone for mitigation of the weight gain associated with the use of Zyprexa, Risperdal or other atypical antipsychotics, even though we have reported positive results in double blind placebo controlled studies. We may pursue other cortisol modulators for this use. The compounds developed pursuant to our early clinical, preclinical and discovery research programs may fail to become viable product candidates regardless of the resources we dedicate to their development. Even if product candidates are identified, we may abandon further development efforts before we reach clinical trials or after expending significant expense and time conducting clinical trials due to financial constraints, concerns over the safety or efficacy of the product candidates, marketing considerations, manufacturing difficulties or other reasons. Moreover, governmental authorities may enact new legislation or regulations that could limit or restrict our development efforts. If we are unable to successfully discover and commercialize new uses for cortisol modulators, we may be unable to generate sufficient revenue to support our operations.

We will need to increase the size of our organization and we may experience difficulties in managing growth.

We expect that the further development of our research and development efforts will be con strain ed by our existing administrative, operational and management resources. Growth will impose significant added responsibilities on members of management, including the need to identify, recruit, maintain and integrate additional employees. To date, we have relied on a small management team, including a number of part-time contributors. Our future financial performance and our ability to compete effectively will depend, in part, on our ability to manage growth effectively.

To that end, we must be able to:

We may not be able to accomplish these tasks, and our failure to accomplish any of them could harm our business.

If we lose our key personnel or are unable to attract and retain additional skilled personnel, we may be unable to pursue our product development and commercialization efforts.

Our ability to operate successfully and manage our potential future growth depends significantly upon retaining key managerial, scientific, sales, marketing, and financial personnel, and attracting and retaining additional highly qualified personnel in these areas. We depend substantially on the principal members of our management and scientific staff. We do not have agreements with any of our executive officers that provide for their continued employment with us or employment insurance covering any of our key personnel. Any officer or employee can terminate his or her relationship with us at any time and work for one of our competitors. The loss of these key individuals could result in competitive harm because we could experience delays in our product research, development and commercialization efforts without their expertise.

We face intense competition for qualified personnel from numerous companies, as well as universities and nonprofit research organizations in the highly competitive San Francisco Bay Area. Although we believe that we have been successful in attracting and retaining qualified personnel to date, we may not be able to attract and retain sufficient qualified personnel in the future. The inability to attract and retain these personnel could result in delays in the research, development and commercialization of our potential products.

Rapid technological change could make our product and product candidates obsolete.

Pharmaceutical technologies have undergone rapid and significant change and we expect that they will continue to do so. Our future will depend in large part on our ability to maintain a competitive position with respect to these technologies. Korlym and any products and processes that we develop may become obsolete or uneconomical before we recover any or all expenses incurred in connection with their development. Rapid technological change could make Korlym and our product candidates obsolete or uneconomical, which could materially adversely affect our business, financial condition and results of operations.

Risks Related to Our Capital Needs and Financial Results

We may need additional capital in order to complete the development and commercialization of Korlym for additional indications or for the development and commercialization of our proprietary, selective cortisol modulators.  Additional capital may not be available to us at all or on favorable terms, which could adversely affect our business.

We may need to raise additional funds to continue and expand the development and commercialization of Korlym and our proprietary, selective cortisol modulators in additional indications. We may also raise additional funds for other research and development activities, including clinical trials, and working capital and for other general corporate purposes, or to acquire or invest in businesses, products and technologies that are complementary to our own.

Factors affecting our liquidity include the following:

We may also choose to raise additional capital due to favorable market conditions or strategic considerations even if we believe we have sufficient funds for our current and future operating plans.

We cannot be certain that additional funding will be available on acceptable terms or at all. Our sales of common stock and warrants and the exercises of warrants have been dilutive to stockholders and any exercise of outstanding warrants and additional equity financing could cause further dilution. Debt financing, if available, may involve restrictive covenants. If we obtain funds through

collaborations with others, these arrangements may be on unfavorable terms or may require us to relinquish certain rights to Korlym, our technologies or product candidates, which we would otherwise seek to develop on our own. If adequate funds are not available, we may be required to delay, reduce the scope of or eliminate one or more of our research or development programs or we may be required to discontinue operations.

We have incurred substantial losses and we may incur losses in the future.

We have financed our operations and internal growth primarily through private placements of preferred and common stock, the public sale of common stock, revenue from the sale of Korlym and our financing agreement with Biopharma. On an annual basis, we have incurred losses in each year since our inception in 1998. We may incur additional losses as we continue our discovery and clinical development programs, apply for regulatory approvals, acquire and/or develop treatments in other therapeutic areas, and expand our sales and marketing capabilities.

We may not be able to pursue all of our product research and development opportunities if we are unable to generate sufficient revenue or secure adequate funding for these programs.

The costs required to start or continue many of the programs that our intellectual property allows us to consider for further development are collectively greater than the funds currently available to us. For example, we have successfully discovered three series of compounds that are selective cortisol modulators but do not appear to block the progesterone receptor.  Further development of these proprietary compounds or any further development stemming from our method of use patents may be delayed or cancelled if we determine that such development may jeopardize our ability to complete the clinical development of Korlym for the treatment of triple-negative breast cancer.

Global economic conditions could adversely affect our liquidity and financial condition.

In the United States and globally, market and economic conditions have been volatile over the past few years. Renewed or increased turbulence in the global markets and economies may cause lenders and institutional investors to reduce, and in some cases, cease, to provide credit to businesses such as ours, which could adversely affect our liquidity and financial condition.

If we do not have sufficient cash flow to continue operating our business and are unable to borrow funds or raise equity or debt capital, we may need to find alternative ways to increase our liquidity. Such alternatives may include, without limitation, curtailing clinical or drug development activity, or limiting our commercial efforts, product manufacturing or sales and marketing support, which would have an adverse effect on our business, results of operations, cash flows and financial condition.

If we acquire other selective cortisol modulators or other technologies or potential products, we will incur a variety of costs and may never realize the anticipated benefits of the acquisition.

If appropriate opportunities arise, we may attempt to acquire other technologies or product candidates that are complementary to our operating plan. We currently have no commitments, agreements or plans for any acquisitions. Acquiring rights to another potential product or technology may result in unforeseen difficulties and expenditures and may absorb significant management attention that would otherwise be available for ongoing development of our business. In addition, we may fail to realize the anticipated benefits of any acquired potential product or technology. Future acquisitions could dilute our stockholders' ownership interest in us and could cause us to incur debt, expose us to future liabilities and result in amortization or other expenses related to goodwill and other intangible assets.

Failure to meet our obligations under our Financing Agreement with Biopharma could adversely affect our financial results and liquidity.

Pursuant to our Financing Agreement with Biopharma entered into in August 2012, we are obligated to make payments to Biopharma equal to 20 percent of our net product sales of Korlym, any future mifepristone-based products and our next-generation selective cortisol modulators, subject to certain quarterly caps, as well as an un-capped 20 percent of any upfront, milestone or other contingent payments we receive with respect to Covered Products, until such payments to Biopharma total $45.0 million, at which point the obligation will extinguished.

Pursuant to this agreement, we may not: (i) incur indebtedness greater than the sum of earnings before interest, taxes, depreciation and amortization, including such items as non-cash stock-based compensation, for the four calendar quarters preceding such incurrence, which we refer to as the Indebtedness Covenant; (ii) pay a dividend or other cash distribution, unless we have cash and cash equivalents in excess of $50.0 million after such payment; (iii) amend or restate our certificate of incorporation or bylaws unless such amendments or restatements do not affect Biopharma's interests under the transaction; and (iv) encumber any of the collateral securing our performance under the agreement.

The percentage used to calculate our payments to Biopharma would increase to 50 percent and any applicable payment caps would lapse if we (i) fail to provide Biopharma with certain information regarding our promotion and sales of Covered Products, (ii) do not devote a commercially reasonable amount of resources to the promotion and marketing of the Covered Products or (iii) violate the Indebtedness Covenant and, in each case, fail to cure within the applicable cure period.

Upon a Corcept change of control transaction, as defined in the agreement, Biopharma will be automatically entitled to receive any amounts not previously paid, up to our maximum repayment obligation of $45.0 million.  As defined in the agreement, "Change of Control" includes, among other things, (i) a greater than 50 percent change in the ownership of Corcept, (ii) certain changes in Board composition of Corcept and (iii) the licensing of Korlym to a third - party for sale in the United States.

To secure our obligations under the agreement, we granted Biopharma a security interest in our rights in patents, trademarks, trade names, domain names, copyrights, know-how and regulatory approvals related to the Covered Products, all books and records relating to the foregoing and all proceeds of the foregoing, which we refer to as the Collateral.  If we (i) fail to deliver a royalty payment when due and do not remedy that failure within 30 days, (ii) fail to maintain a first-priority perfected security interest in the Collateral in the United States and do not remedy that failure within five business days of receiving notice of such failure or (iii) become subject to an event of bankruptcy, then Biopharma may attempt to recover up to $45.0 million (after deducting any payments we have already made).

We cannot assure that we will not breach the covenants or other terms of, or that an event of default will not occur under this agreement and, if a breach or event of default occurs, we cannot assure that we will be able to cure the event within the time permitted. Any failure to pay our obligations when due, any breach or default of our covenants or other obligations, or any other event that causes an acceleration of payment at a time when we do not have sufficient resources to meet these obligations, could have a material adverse effect on our business, results of operations, financial condition and future viability. 

The acceleration of the payment obligation in the event of a change of control transaction may make us less attractive to potential acquirers, and the payment of such funds out of our available cash or acquisition proceeds would reduce acquisition proceeds for our stockholders.

Risks Relating to Our Intellectual Property

If Korlym or future product candidates conflict with the patents of others or if we become involved in other intellectual property disputes, we may have to engage in costly litigation or obtain a license and we may be unable to commercialize our product candidates.

The patent positions of companies in the pharmaceutical industry are highly uncertain, involve complex legal and factual questions and have been and continue to be the subject of much litigation. Our product candidates may give rise to claims that our patents are invalid or that we infringe on the products or proprietary rights of others. If it is determined that our product candidates infringe on others' patent rights, we may be required to obtain licenses to those rights. If we fail to obtain licenses when necessary, we may experience delays in commercializing our product candidates while attempting to design around other patents, or determine that we are unable to commercialize our product candidates at all. If we do become involved in intellectual property litigation, we are likely to incur considerable costs in defending or prosecuting the litigation. We believe that we do not currently infringe any third - party's patents or other proprietary rights, and we are not obligated to pay royalties relating to the use of intellectual property to any third - party other than Stanford University and t he University of Chicago.

Our success depends in part on our ability to obtain and maintain adequate patent protection for the use of Korlym for the treatment of triple-negative breast cancer and other potential uses of cortisol modulators. If we do not adequately protect our intellectual property, competitors may be able to use our intellectual property and erode our competitive advantage.

We own 19 issued U.S. method of use patents and have exclusively licensed five issued U.S. method of use patents with one licensed application pending. We have five U.S. method of use patent applications pending for our next-generation selective cortisol modulators. We also own eight composition of matter patents. We have applied, and will continue to apply, for patents covering our product candidates as we deem appropriate. We have filed, where we deemed appropriate, foreign patent applications corresponding to our U.S. patents and applications.

We have exclusively licensed three issued U.S. patents from Stanford University for the use of cortisol modulators, including mifepristone, in the treatment of psychotic depression, cocaine-induced psychosis and early dementia, including early Alzheimer's disease.  We have also exclusively licensed from the University of Chicago two issued U.S. patents for the use of cortisol modulators in the treatment of triple-negative breast cancer , and a second patent family with applications in the U nited S tates and Europe having claims directed to the use of cortisol modulators to treat castration-resistant prostate cancer.

We bear the costs of prosecuting, protecting and defending the rights to these patents. In order to maintain the exclusive license to these patents until their expiration, we are obligated to make milestone and royalty payments to both universities. If we become

noncompliant with our obligations under our agreements, we may lose the right to commercialize mifepristone for the treatment of psychotic depression, cocaine-induced psychosis, early dementia, triple-negative breast cancer and castration-resistant prostate cancer and our business would be materially harmed. In addition, if Stanford University were to terminate our mifepristone license due to breach of the license on our part, we would not be able to commercialize mifepristone for the treatment of psychotic depression, cocaine-induced psychosis or early dementia. If the University of Chicago were to terminate our licenses, we may not be able to commercialize cortisol modulators for the treatment of triple-negative breast cancer or castration-resistant prostate cancer.

Our patent applications and patents licensed or issued to us may be challenged by third - parties and our patent applications may not result in issued patents. For example, in 2004, Akzo Nobel (now a division of Merck & Co.) filed an observation challenging the claims of our exclusively licensed European patent application with claims directed to psychotic depression. In this instance, the patent later issued and, in 2007, we received notice from the European Patent Office that there will be no opposition proceedings in Europe in regard to this patent.

Our presently pending and future patent applications may not issue as patents, and any patent issued to us may be challenged, invalidated, held unenforceable or circumvented. For example, the arguments presented by Akzo Nobel could be raised in the United States either before the U.S. Patent and Trademark Office or in a court of law. Furthermore, the claims in patents which we own or have licensed, or which we may license or which may be issued to us in the future, may not be sufficiently broad to prevent third- parties from producing competing products. In addition, the laws of various foreign countries in which we compete may not protect our intellectual property to the same extent as do the laws of the United States. If we fail to obtain adequate patent protection for our proprietary technology, our competitors may produce competing products based on our technology, which would impair our ability to compete.

If a third - party successfully asserted an infringement claim against us, we could be forced to pay damages and be prevented from developing, manufacturing or marketing our potential products. We do not have liability insurance for patent infringements. A third - party could require us to obtain a license to continue to use their intellectual property, and we may not be able to do so on commercially acceptable terms, or at all. We believe that significant litigation will continue in our industry regarding patent and other intellectual property rights. If we become involved in litigation, it could consume a substantial portion of our resources. Regardless of the merit of any particular claim, defending a lawsuit takes significant time, is expensive and diverts management's attention from other business.

Our ability to compete in the market could be diminished if we are unable to protect our trade secrets and proprietary information.

In addition to patents, we rely on a combination of confidentiality, nondisclosure and other contractual provisions, laws protecting trade secrets and security measures to protect our trade secrets and proprietary information. Nevertheless, these measures may not adequately protect our trade secrets or other proprietary information. If they do not adequately protect our rights, third - parties could use our proprietary information, which could diminish our ability to compete in the market. In addition, employees, consultants and others who participate in the development of our product candidates may breach their agreements with us regarding our trade secrets and other proprietary information, and we may not have adequate remedies for the breach. We also realize that our trade secrets may become known through means not currently foreseen. Notwithstanding our efforts to protect our trade secrets and proprietary information, our competitors may independently develop similar or alternative products that are equal or superior to our product candidates without infringing on any of our proprietary information or trade secrets.

The mifepristone patents that we own cover the use of mifepristone , not its composition, which may make it more difficult for us to prove patent infringement if physicians prescribe another manufacturer's mifepristone or if patients acquire mifepristone from other sources, such as the internet or underground market. 

We own or have exclusively licensed issued U.S. patents covering the methods of using cortisol modulators to treat a variety of disorders, including triple-negative breast cancer. A method of use patent covers only a specified use of a particular compound, not a compound's composition. Because our patents do not cover the composition of mifepristone, we cannot prevent others from commercializing mifepristone in indications such as triple-negative breast cancer or those set forth in our other method of use patents. Although any such "off-label" use would violate our patents, effectively monitoring compliance with our patents may be difficult and costly.  In addition, we cannot be assured that patients will not obtain mifepristone from other sources. As with other pharmaceutical products, patients may be able to purchase mifepristone through the internet or underground market. Mifepristone is also sold in the United States by Danco Laboratories for the termination of early pregnancy. While distribution is limited to a single dose provided in the physician's office and covered by other restrictions, we cannot be certain that Cushing's syndrome patients will not be able to obtain mifepristone from this source or others, should another company receive approval to market mifepristone for another indication.

Risks Related to Our Stock

The market price of our common stock has been and is likely to continue to be highly volatile due to the limited number of shares of our common stock held by non-affiliates or factors influencing the stock market and opportunities for sale at any given time may be limited. 

We cannot assure that an active trading market for our common stock will exist at any time. Holders of our common stock may not be able to sell shares quickly or at the market price if trading in our common stock is not active. During the 52-week period ended March 7 , 2016, our average daily trading volume was approximately 339,969 shares and the intra-day sales prices per share of our common stock on The NASDAQ Stock Market ranged from $ 3.22  to $7.67. As of March 7 , 2016, our officers, directors and principal stockholders controlled 26 percent of o ur common stock. The trading price of our common stock has been and is likely to continue to be highly volatile and could be subject to wide fluctuations in price in response to various factors, many of which are beyond our control, including:

In addition, the stock market in general, The NASDAQ Stock Market and the market for biotechnology and life sciences companies in particular have experienced extreme price and volume fluctuations that have often been unrelated or disproportionate to the operating performance of those companies. These broad market and industry factors may seriously harm the market price of our common stock, regardless of our operating performance. In the past, following periods of volatility in the market, securities class-action litigation has often been instituted against companies. Such litigation, if instituted against us, could result in substantial costs and diversion of management's attention and resources.

Our stock price may decline if our financial performance does not meet the guidance that we provided to the public, estimates published by research analysts or other investor expectations.

We have provided guidance as to our expected 2016 net product revenue. Our guidance is only an estimate of what management believes is realizable as of the date of the release of such guidance. Our actual results may vary from our guidance and the variations may be material.

There are a number of reasons why we might fail to meet our financial guidance or other expectations about our business, including, but not limited to, the risks and uncertainties described in this report and in our other public filings and public statements. In particular, there are inherent difficulties in predicting the amount of Korlym that will be sold. For example, the rate of physician adoption of Korlym is uncertain. Research analysts who cover our business have put forth a range of revenue estimates, based on their own analyses. We believe research analysts will consider the guidance we have provided as one factor in determining their own annual revenue estimates. Estimating our net revenue for future periods is difficult and you should rely on our guidance and the estimates of research analysts at your own discretion. If, in the future, our operating or financial results for a particular period do not meet our guidance, analyst estimates or the expectations of investors, or if we reduce our guidance for future periods, our stock price may decline.

Research analysts may not continue to provide or initiate coverage of our common stock or may issue negative reports.

Securities analysts currently covering our common stock may discontinue research coverage. Additional securities analysts may elect not to provide research coverage of our common stock. A lack of research coverage may adversely affect our common stock's market price. The trading market for our common stock may be affected in part by the research and reports that industry or financial analysts publish about us or our business. If one or more of the analysts who elects to cover us downgrades our stock, our stock price would likely decline rapidly and significantly. If one or more of these analysts ceases coverage of our company, we could lose visibility in the market, which in turn could cause our stock price to decline. In addition, rules mandated by the Sarbanes-Oxley Act of 2002, and a global settlement reached in 2003 between the SEC, other regulatory analysts and a number of investment banks have led to a number of fundamental changes in how analysts are reviewed and compensated. In particular, many investment banking firms are required to contract with independent financial analysts for their stock research. It may be difficult for companies such as ours with smaller market capitalizations to attract independent financial analysts that will cover our common stock. This could have a negative effect on our market price.

Sale of a substantial number of shares of our common stock may cause the price of our common stock to decline.

Sales of a substantial number of shares of our common stock in the public market could harm the market price of our common stock. As additional shares of our common stock become available for resale in the public market, whether as a result of equity financings by us, distributions in-kind of our common stock by our venture capital or private equity stockholders, or due to the release of trading restrictions, the supply of our common stock will increase, which could decrease the price. Substantially all of the shares of our common stock are eligible for sale, subject to applicable volume and other resale restrictions.

Our officers, directors and principal stockholders, acting as a group, could significantly influence corporate actions .

As of March 7 , 2016, our officers and directors control 26 percent of our common stock. As a result, these stockholders, acting together, will be able to significantly influence all matters requiring appro val by our stockholders, including the election of directors and the approval of mergers or other business combination transactions. The interests of this group of stockholders may not always coincide with our interests or the interests of other stockholders and may prevent or delay a change in control. This significant concentration of share ownership may adversely affect the trading price of our common stock because investors often perceive disadvantages to owning stock in companies with controlling stockholders.

Changes in laws and regulations may significantly increase our costs, which could harm our financial results.

New laws and regulations, as well as changes to existing laws and regulations, affecting our company, including the provisions of the PPACA requiring the reporting of aggregate spending related to health care professionals, the provisions of the Sarbanes-Oxley Act of 2002 and rules adopted by the SEC and by The NASDAQ Stock Market have and will likely continue to result in increased costs to us as we respond to their requirements. We are investing resources to comply with evolving laws and regulations, and this investment may result in increased selling, general and administrative expenses and a diversion of management's time and attention from revenue-generating activities to compliance activities.

In addition, new rules and regulations could make it more difficult or costly for us to obtain certain types of insurance, including director and officer liability insurance, and we may be forced to accept reduced policy limits and coverage or incur higher costs to obtain the same or similar coverage. The impact of these events could also make it more difficult for us to attract and retain qualified persons to serve on our Board of Directors, or our board committees, or as executive officers. At present, we cannot predict or estimate the amount of the additional costs related to new rules and regulations or the timing of such costs.

We may fail to comply with public company obligations, including the securities laws and regulations. Such compliance is costly and requires significant management resources.

We are a small company with limited resources. The federal securities laws and regulations, including the corporate governance and other requirements of the Sarbanes-Oxley Act of 2002, impose complex and continually changing regulatory requirements on our operations and reporting. These requirements have increased and will continue to increase our legal compliance costs.

Section 404 of the Sarbanes-Oxley Act of 2002 requires that we evaluate and determine the effectiveness of our internal controls over financial reporting and provide a management report on the internal control over financial reporting. This same legislation also requires that the independent registered public accounting firm auditing our financial statements must attest to and report on the effectiveness of our internal controls over financial reporting. If we are unable to complete the required assessment as to the adequacy of our internal control over financial reporting in future years or if our independent registered public accounting firm is unable to provide us with an unqualified report as to the effectiveness of our internal control over financial reporting as of future year ends, investors could lose confidence in the reliability of our financial reporting.

Changes in or interpretations of accounting rules and regulations could result in unfavorable accounting charges or require us to change our accounting policies or operating practices.

Accounting methods and policies for business and marketing practices of pharmaceutical companies are subject to continual review, interpretation and guidance from relevant accounting authorities, including the SEC. Although we believe that our accounting practices are consistent with current accounting pronouncements, changes to or interpretations of accounting methods or policies in the future may require us to reclassify, restate or otherwise change or revise our financial statements. Any such changes could result in corresponding changes to the amounts of assets, liabilities, revenues, expenses and income. Any such changes could have a material adverse effect on our business, financial position and results of operations and could cause the market value of our common stock to decline.

Anti-takeover provisions in our charter and bylaws and under Delaware law and payment acceleration provisions under the Biopharma Financing Agreement may make an acquisition of us or a change in our management more expensive or difficult, even if an acquisition or a management change would be beneficial to our stockholders.

Provisions in our charter and bylaws may delay or prevent an acquisition of us or a change in our management. Some of these provisions allow us to issue preferred stock without any vote or further action by the stockholders, require advance notification of stockholder proposals and nominations of candidates for election as directors and prohibit stockholders from acting by written consent. In addition, a supermajority vote of stockholders is required to amend our bylaws. Our bylaws provide that special meetings of the stockholders may be called only by our Chairman, President or the Board of Directors and that the authorized number of directors may be changed only by resolution of the Board of Directors. These provisions may prevent or delay a change in our Board of Directors or our management, which is appointed by our Board of Directors. In addition, because we are incorporated in Delaware, we are governed by the provisions of Section 203 of the Delaware General Corporation Law. Section 203 may prohibit large stockholders, in particular those owning 15 percent or more of our outstanding voting stock, from merging or combining with us. In addition, our payment obligations to Biopharma accelerate in the event of a change of control transaction. See "Risk Factors – Failure to meet our obligations under our Financing Agreement with Biopharma could adversely affect our financial results and liquidity." These provisions in our charter and bylaws and under Delaware law and the Financing Agreement could reduce the price that investors might be willing to pay for shares of our common stock in the future and result in the market price being lower than it would be without these provisions.

I TEM 1B.  UNRESOLVED STAFF COMMENTS

No n e.

I TEM 2.  PROPERTIES

We lease 16,955 square feet of office space in Menlo Park, California for our corporate facilities. Our current lease extended our occupancy through December 2016 . We expect that these facilities will accommodate our operations for the next year.

ITEM 3.  LEG AL PROCEEDINGS

We are not currently involved in any material legal proceedings.

ITE M 4.  MINE SAFETY DISCLOSURES

Not a pplicable.

PART II

IT EM 5. MARKET FOR REGISTRANT'S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES

Market Information

Our common stock is traded on The NASDAQ Capital Market under the symbol "CORT". The following table sets forth the high and low intra-day sale prices per share of our common stock on The NASDAQ Capital Market for the periods indicated. These prices represent quotations among dealers without adjustments for retail mark-ups, markdowns or commissions, and may not represent prices of actual transactions .

Stockh olders of Record and Dividends

As of March 7 , 2016 , we had 109,660,606 shares of common stock outstanding held by 76 stockholders of record. We have never declared or paid cash dividends on our capital stock. We currently intend to retain any future earnings to finance the growth and development of our business and therefore, do not anticipate paying any cash dividends in the foreseeable future. In addition, the Biopharma Financing Agreement prohibits payment of dividends unless we have cash and cash equivalents in excess of $50 million after such payment.

S ale of Unregistered Securities

None.

Repurchases of Securities

None.

Market Perfo rmance Graph

The graph and the accompanying text below is not "soliciting material," is not deemed filed with the SEC and is not to be incorporated by reference in any filings by us under the Securities Act or the Exchange Act, whether made before or after the date hereof and irrespective of any general incorpo ration language in such filing.

The rules of the SEC require that we include a line-graph comparing cumulative stockholder returns on our common stock with the NASDAQ Composite Index (which tracks the aggregate price performance of equity securities of companies traded on NASDAQ) and either a published industry or line-of-business standard index or an index of peer companies selected by us. We have elected to use the NASDAQ Biotechnology Index (consisting of a group of 120 companies in the biotechnology sector, including us) for purposes of the performance comparison that appears below.

The graph shows the cumulative total stockholder return assuming the investment of $100.00 and the reinvestment of dividends and is based on the returns of the component companies weighted according to their market capitalizations as of the end of the period for which returns are indicated. No dividends have been declared on our common stock.

The stockholder return shown on the graph below is not necessarily indicative of future performance, and we do not make or endorse any predictions as to future stockholder returns.

COMPARISON OF 5 YEAR CUMULATIVE TOTAL RETURN* AMONG

CORCEPT THERAPEUTICS, THE NASDAQ STOCK MARKET (U.S.) INDEX

THE NASDAQ US BENCHMARK TOTAL RETURN (TR) INDEX

AND THE NASDAQ BIOTECHNOLOGY INDEX

*  $100 invested on December 31, 2010 including reinvestment of dividends. Fiscal year ended December 31.

ITE M 6.  SELECTED FINANCIAL DATA

SELECTED FINANCIAL DATA

(in thousands, except per share data)

The selected financial data set forth below are derived from our financial statements. The statement of operations data for the years ended December 31, 2015 ,   2014 , and 2013 and the balance sheet data as of December 31, 2015 and 2014 are derived from our audited financial statements included in this Annual Report. The statements of operations data for the years ended December 31, 2012 and 2011 , and the balance sheet data as of December 31, 2013 ,   2012 and 2011 have been derived from our audited financial statements, which are not included in this Annual Report .   Our historical results are not necessarily indicative of our results to be expected for 2016 or for any future period .   The selected financial data set forth below should be read in conjunction with our financial statements, the related notes and "Management's Discussion and Analysis of Financial Condition and Results of Operations" included elsewhere in this Annual Report .

ITE M 7.  MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following Management's Discussion and Analysis of Financial Condition and Results of Operations (MD&A) is intended to help the reader understand our results of operations and financial condition. MD&A is provided as a supplement to, and should be read in conjunction with, our audited Financial Statements and the accompanying Notes to Financial Statements and other disclosures included in this Annual Report on Form 10-K (including the disclosures under Item 1A, Risk Factors). Our Financial Statements have been prepared in accordance with U.S. generally accepted accounting principles and are presented in U.S. dollars. We make statements in this section that are forward-looking statements within the meaning of the federal securities laws. For a complete discussion of such forward-looking statements and the potential risks and uncertainties that may impact upon their accuracy, see "Forward-Looking Statements" included in "Risk Factors" in Part I, Item 1A of this Form 10-K and the "Overview" and "Liquidity and Capital Resources" sections of this Management's Discussion and Analysis of Financial Condition and Results of Operations.

Overview

We are a pharmaceutical company engaged in the discovery, development and commercialization of drugs that treat severe metabolic, oncologic and psychiatric disorders by modulating the effects of cortisol. Since our inception in 1998, we have been developing mifepristone, a potent compound that modulates the effect of cortisol by acting as a competitive antagonist at the glucocorticoid receptor (GR). We have also discovered a portfolio of selective cortisol modulators, all of which share mifepristone's affinity for GR but, unlike mifepristone, do not bind to the progesterone receptor, and so do not terminate pregnancy or cause other side effects associated with progesterone receptor affinity.

In 2012, the United States Food and Drug Administration (FDA) approved Korlym ® (mifepristone) 300 mg Tablets as a once-daily oral medication for the treatment of hyperglycemia secondary to hypercortisolism in adult patients with endogenous Cushing's syndrome who have type 2 diabetes mellitus or glucose intolerance and have failed surgery or are not candidates for surgery. We made Korlym available to patients in April 2012 and continue to develop the sales, marketing, medical affairs and logistical infrastructure needed to commercialize the drug.

Endogenous Cushing's syndrome is caused by prolonged exposure of the body's tissues to high levels of the hormone cortisol. An estimated 20,000 patients in the United States have Cushing's syndrome. Endogenous Cushing's syndrome can affect every organ system in the body and can be lethal if not treated effectively. We have Orphan Drug designation for Korlym from the FDA for the approved indication. Drugs that receive Orphan Drug designation obtain seven years of marketing exclusivity in the United States for the approved indication from the date of drug approval, as well as tax credits for clinical trial costs, marketing application filing fee waivers and assistance from the FDA in the drug development process.

By the end of the first quarter of 2016, we plan to begin a Phase 2 trial of our lead selective cortisol modulator, CORT125134, to treat patients with Cushing's syndrome, with study sites located in the EU and the United States.

We are conducting a Phase 1/2 trial of mifepristone (Korlym's active ingredient) in combination with the chemotherapy drug eribulin (Halaven ® ) to treat patients with metastatic, triple-negative breast cancer (TNBC), a form of the disease in which the three receptors that fuel most breast cancer growth – estrogen, progesterone and the HER-2/neu gene – are not present. Because the tumor cells lack the necessary receptors, treatments that target estrogen, progesterone and HER-2 receptors are ineffective. Approximately 40,000 women are diagnosed with TNBC each year. There is no FDA-approved treatment and neither a targeted treatment nor an approved standard chemotherapy regimen for relapsed TNBC patients exists. We expect to have results of our trial by mid-2016. 

By the end of the first quarter of 2016, we plan to begin a Phase 1/2 trial that will combine CORT125134 with anti-cancer agents to treat patients with a variety of solid-tumor cancers.

In 2003, we initiated a discovery research program to identify and patent selective cortisol modulators with the intent of developing a pipeline of products for proprietary use. Both the United States Patent & Trademark Office (USPTO) and the European Patent Office (EPO) have issued composition of matter patents covering these compounds, which have generated positive results in animal or in vitro models of a wide range of serious disorders. We intend to continue our discovery research program with the goal of identifying new selective cortisol modulators to manufacture and conduct pre-clinical development of these compounds and to study the most promising of them in humans. We expect to advance one or more additional compounds to the clinic next year.

Results of Operations 

Net Product Sales – Net product sales are gross product revenue from sales to customers less deductions for estimated government rebates and chargebacks.

For the year ended December 31, 2015, we recorded $50.3 million in net product sales, as compared to $26.6 million for the year ended December 31, 2014 and $10.4 million for the year ended December 31, 2013. The increases in net product revenue were primarily driven by the increase in our sales volume. 

We donate cash to a   third-party charitable organization that help s patients with financial need pay for the treatment of Cushing's syndrome, which treatment may include Korlym. We do not include as net product revenues funds we receive from th i s organization.

Cost of sales – Cost of sales includes the cost to manufacture Korlym, including active pharmaceutical ingredient (API), tableting and packaging costs, indirect personnel and overhead costs, and the cost of stability testing and distribution.

Cost of sales was $1.4 million for the year ended December 31, 2015, which equals 2.7 percent of net product sales. This compared to $882,000 for the year ended December 31, 2014 and $143,000 for the year ended December 31, 2013, which represented 3.3 percent and 1.4 percent of net product sales for the respective periods. Direct product cost for tablets sold during the year ended December 31, 2015 represented approximately 2.1 percent of net product sales, compared to 2.7 percent and less than 1.0 percent for the years ended December 31, 2014 and 2013 , respectively. The remainder of the cost of sales during each period consisted of stability testing and distribution costs. Product sold during the year ended December 31, 2015 included the cost of manufacturing Korlym tablets, indirect personnel and other overhead costs and the cost of API. Product sold during the year ended December 31, 2014 included the cost of manufacturing Korlym tablets and indirect personnel and other overhead costs, but did not include the full cost of API, as that cost had been expensed prior to the FDA's approval of Korlym. Product sold for the period ending December 31, 2013 did not include either the cost of manufacturing Korlym tablets or API costs, because the API cost was expensed and these tablets were manufactured prior to FDA approval. Direct product cost decreased in 2015, as a percentage of net product sales, because the cost of manufacturing Korlym tablets declined.

Research and development expenses – Research and development expenses include the cost of (1) personnel working on our development activities, including their stock-based compensation, (2) discovery research and pre-clinical studies, (3) clinical trials, (4) regulatory activities, (5) manufacturing development, including the development and activities needed to qualify a tablet manufacturing site with FDA, (6) acquisition of clinical trial materials and materials used in regulatory submissions prior to product approval, and (7) the preparation and prosecution of the regulatory submissions related to Korlym and our other product candidates.

Research and development expenses decreased 16.1 percent to $15.4 million for the year ended December 31, 2015 from $18.4 million in 2014.

During the year ended December 31, 2015, as compared to 2014 , there was a decrease of $3.9 million related to the discontinuation of our Phase 3 psychotic depression clinical trial in May 2014. This decrease was partially offset by $0.9 million due to increased spending on our TNBC Phase 1/2 study, an FDA required drug interaction study and the development of new selective cortisol modulators .

Research and development expenses decreased 10.2 percent to $18.4 million for the year ended December 31, 2014 from $20.5 million in 2013, due to the discontinuation of our Phase 3 psychotic depression clinical trial in May 2014.

Clinical trial costs decreased $1.1 million during the year ended December 31, 2014, as compared to 2013. During the year ended December 31, 2014 as compared to 2013, there were decreases of $3.7 million related to discontinuation of our Phase 3 study with mifepristone for the treatment of psychotic depression, partially offset by increases of $1.6 million related to our Phase 1/2 trial of mifepristone to treat TNBC and $1.1 million related to the initiation of our Phase 1 study with CORT125134.

During the year ended December 31, 2014, as compared to 2013, there were decreases of $955,000 related to research and pre-clinical work on new compounds as these programs wound down and their compounds advanced to the clinic, $526,000 related to development of other products and $70,000 related to the completion of certain manufacturing process development efforts.

Below is a summary of our research and development expenses by major project:

We expect research and development expenditures in 2016 to be higher than they were in 2015, as our research and development programs advance and the costs associated with them increase. Research and development expenses in 2017 and beyond will depend on the outcomes of our current trials and future strategic priorities. 

Many factors affect the cost and timing of our trials, including inconclusive results requiring more clinical trials, slow patient enrollment, adverse side effects in study patients, insufficient supplies of medicine for our clinical trials and real or perceived lack of effectiveness or safety of the drug in our trials.  The cost and timing of development of our selective cortisol modulators will depend on the success of our efforts and any difficulties we encounter.  In addition, the development of our product candidates is subject to extensive governmental regulation. These factors make it difficult for us to predict the timing and costs of developing and securing approval of our product candidates.

Selling, general and administrative expenses – Selling, general and administrative expenses include (1) the cost of personnel, consultancy and contractors engaged in administrative and commercial activities, including stock-based compensation, (2) expenses of third-party vendors used in our commercial activities related to Korlym, including sales, marketing and promotion, market research, reimbursement support services, pharmacovigilance, distribution of marketing materials and other logistical needs, (3) medical educational grants and donations and (4) legal, accounting and other professional fees.

For the year ended December 31, 2015, selling, general and administrative expenses increased 5.8 percent to $36.9 million from $34.9 million for 2014.

During the year ended December 31, 2015, as compared to 2014, selling, general and administrative expenses increased $2.0 million related to the growth of our internal sales organization, and $2.0 million related to operating costs, including infrastructure and personnel costs due to increased sales activities in 2015. These increases were offset by a $2.0 million decrease in sales and marketing related costs.

For the year ended December 31, 2014, selling, general and administrative expenses increased 11.8 percent to $34.9 million from $31.2 million for 2013.

During the year ended December 31, 2014, as compared to 2013, staffing and consultancy costs reflected a net increase of $3.8 million, which included $2.5 million related to cash bonuses awarded to employees and officers working in selling, general and administrative functions in February 2014. After adjusting for the effect of these bonuses, there was a $1.3 million increase in staffing and consultancy costs d uring 2014 as compared to 2013, due primarily to additional resources necessary to commercialize Korlym.

During the year ended December 31, 2014, as compared to 2013, there were net decreases in other professional services costs related to commercialization activities of $1.3 million, primarily related to marketing programs and materials. In addition, there were net increases of $1.2 million between the respective years in other commercial and non-commercial support costs, such as education, training and conference costs, medical education grants and donations, facilities and technology costs, travel and fleet vehicle costs, legal, insurance and other service fees.

We expect that selling, general and administrative expenses will be higher in 2016 compared to 2015 due to activities directly associated with the sale of Korlym. The level of selling, general and administrative activities and related expenses in 2017 and future years will be largely dependent on our assessment of the staff and other services necessary to support our commercial efforts and our continued clinical development activities. 

See also, "Liquidity and Capital Resources."

Interest and other expense – Interest and other expense for the year ended December 31, 2015 was $3.0 million , as compared to $3.8 million for the year ended December 31, 2014 and $4.5 million for the year ended December 31, 2013. These amounts consisted primarily of interest expense related to our Financing Agreement with Biopharma, which was entered into in August 2012. Interest expense for 2016 and future years will decrease from the levels of 2015 and 2014 as our regular quarterly payments reduce the outstanding obligation. We expect to make our final payment under this obligation in 2017.

Non-GAAP Financial Measures

Our financial statements and footnotes thereto are prepared in accordance with U.S. Generally Accepted Accounting Principles (GAAP) and are included in Part IV, Item 15 of this Annual Report on Form 10-K. To supplement our financial results presented on a GAAP basis, we use non-GAAP measures of net loss and net loss per share that exclude non-cash expenses related to stock-based compensation expense and the accretion of interest expense under our Financing Agreement with Biopharma. We use this non-GAAP measure of net loss to manage our business and believe that it may help investors better evaluate our past financial performance and potential future results. Non-GAAP measures should not be considered in isolation or as a substitute for comparable GAAP accounting and investors should read them in conjunction with our financial statements and notes thereto prepared in accordance with GAAP. The non-GAAP measure of net loss and net loss per share that we use may be different from, and not directly comparable to, similarly titled measures used by other companies.

The following table reflects the reconciliation of GAAP net loss and net loss per share to non-GAAP net loss and net loss per share for the periods presented.

Liq uidity and Capital Resources

We have incurred operating losses since inception. At December 31, 2015, we had an accumulated deficit of $330.4 million. Since 2012, to fund our operations we have relied primarily on revenues from the sale of Korlym and proceeds from the sale of our common stock and from our Financing Agreement with Biopharma.

Based on current commercial, research and clinical development plans, which include funding our Cushing's syndrome commercial operations, completing our Phase 1/2 study of mifepristone for the treatment of TNBC ( and if that study produces positive results) conducting a Phase 3 study, advancing CORT125134 to Phase 2 studies in both Cushing syndrome and solid tumor cancers, and advancing to the clinic at least one more of our next-generation compounds, we expect to fund our planned operations without needing to raise additional funds. However, we may choose to raise additional funds to finance our strategic priorities. We cannot be certain that additional funding will be available on acceptable terms or at all. Any additional equity financing may be dilutive to stockholders, and any debt financing, if available, may involve restrictive covenants. If we obtain funds through collaborations with others, these arrangements may be on unfavorable terms or may require us to relinquish certain rights to our technologies or product candidates that we would otherwise seek to develop on our own.

At December 31, 2015, we had cash and cash equivalents of $40.4 million, compared to $24.2 million at December 31, 2014.  Net cash provided by operating activities for the year ended December 31, 2015 was $3.1 million. Net cash used in operating activities for the year ended December 31, 2014 and 2013 was $27.4 and $37.1 million, respectively. We used cash in each period primarily to fund

the commercialization of Korlym and for research and development activities. In addition, we made payments under the Biopharma Financing Agreement of $9.2 million and $4.9 million during the years ended December 31, 2015 and 2014, respectively. 

We are required to make aggregate payments under the Biopharma Financing Agreement of $45.0 million, with $15.1 million paid through December 31, 2015 and an additional payment of $3.0 million made in February 2016. We will make additional quarterly repayments in 2016 based on the level of our Korlym sales. We expect to fully repay the obligation in 2017.

While we monitor the cash balance in our checking account and transfer the funds into it only as needed, these cash balances and our money market fund could be affected if the underlying financial institution were to fail or were subject to other adverse conditions in the financial markets. We have never experienced a loss or lack of access to cash in our checking account or money market fund.

Contractual Obligations and Commercial Commitments

The following table presents our estimates of obligations under contractual agreements as of December 31, 2015 .

Under the terms of the Financing Agreement, our payments are entirely variable, with no fixed minimums. The timing of our payments is determined by future sales and other receipts as defined.  If there are no net sales, upfront, milestone or other contingent payments in a period with respect to Covered Products, then no payment will be due for that period. As noted above, through December 31, 2015, we have made payments of $15.1 million, with an additional payment in the amount of $3.0 million in February 2016. Biopharma's right to receive payments will expire once it has received cumulative payments of $45 million.

We also have other contractual payment obligations and purchase commitments, the timing of which are contingent on future events, including our manufacturing. In March 2014, we entered into an agreement with PCAS for the manufacture of mifepristone, the API in Korlym, for an initial term of five years, with an automatic extension of one year unless either party gives 12 months' prior written notice that it does not want an extension. In April 2014, we entered into a manufacturing agreement with AAI for the manufacture and packaging of Korlym tablets for an initial term of three years, with consecutive automatic extensions of two years unless either party gives written notice of termination – in the case of AAI, 18 months prior to the end of the applicable term, and in our case 12 months

prior to the end of the applicable term. Purchase commitments under these agreements will depend on our future needs; neither agreement requires us to make minimum purchases.

Net Operating Loss Carryforwards

See Note 10, Income Taxes in our audited financial statements.

Off-Balance Sheet Arrangements

None.

Critical Accounting Policies and Estimates

Our financial statements have been prepared in accordance with U.S. generally accepted accounting principles. The preparation of these financial statements requires us to make estimates and judgments that affect the reported amounts of assets, liabilities and expenses. We base our estimates on historical experience and on various other assumptions that we believe to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.

Net Product Sales

Korlym is not available in retail pharmacies. From our initial launch in April 2012 through June 30, 2013, we sold Korlym primarily to a specialty pharmacy and a specialty distributor, which subsequently resold Korlym to patients and healthcare providers.  In July 2013, we began using a specialty pharmacy that operates on a consignment basis (i.e., does not carry any Korlym inventory), which means that our product sales using that specialty pharmacy are made directly to patients.  (See discussion in forth in Part IV – Item 15(1) – Financial Statements, Notes to Financial Statements, Note 2, Significant Agreements – Commercial Agreements .)

We recognize product revenues from sales of Korlym upon delivery to our customers as long as (i) there is persuasive evidence that an arrangement exists between ourselves and the customer, (ii) collectability is reasonably assured and (iii) the price is fixed or determinable.  Prior authorization or confirmation of coverage level by the patient's private insurance plan or government payor is a prerequisite to the shipment of product to a patient.  In order to conclude that the price is fixed or determinable, we must be able to (i) calculate gross product revenues from the sales to our customers and (ii) reasonably estimate net product revenues.

We provide cash donations to the National Organization for Rare Disorders, a third-party charitable organization that helps patients with financial need pay for the cost of their Cushing's syndrome treatment, which treatment may include Korlym.  We do not include in net product revenues funds we receive from this organization.

We calculate gross product revenues based on the price that we charge our customers.  We estimate our net product revenues by deducting from our gross product revenues (a) trade allowances, such as discounts for prompt payment, (b) estimated government rebates and chargebacks, (c) reserves for expected product returns and (d) estimated costs of patient co-pay assistance programs.  We initially record estimates for these deductions at the time we recognize the gross revenue. We update our estimates on a recurring basis as new information becomes available.

Rebates and Chargebacks

We contract with Medicaid and other government agencies so that Korlym will be eligible for purchase by, or qualify for partial or full reim bursement from, Medicaid and other government programs.  We estimate our rebate and chargeback amounts by applying the discount rates applicable to each government-funded program against our sales to patients covered by such programs.

Allowances for Patient Co-pay Assistance Program

We provide financial assistance to patients whose insurance policies require them to pay high deductibles and co-pays. We estimate the cost of this assistance by applying our historical experience regarding such assistance to our estimate of the sales in the period that will be provided to patients requiring such assistance .

Inventory and Cost of Sales

Regulatory approval of product candidates is uncertain. Because product manufactured prior to regulatory approval may not be sold unless regulatory approval is obtained, we expense manufacturing costs for product candidates as research and development expenses at the time such costs are incurred. Once a product receives regulatory approval, we begin capitalizing manufacturing costs related to the approved product into inventory.

We value our inventories at the lower of cost or net realizable value. We determine the cost of inventory using the specific identification method, which approximates a first-in, first-out basis. We analyze our inventory levels quarterly and write down inventory that has become obsolete or has a cost basis in excess of its expected net realizable value, as well as any inventory quantities in excess of expected requirements. Any expired inventory is disposed of and the related costs are recognized as cost of sales.

Cost of sales includes the cost of product (i.e., the cost of manufacturing Korlym, including material, third-party manufacturing costs and indirect personnel and other overhead costs) based on units for which revenue is recognized in the current period, as well as costs of stability testing, logistics and distribution.

Inventory amounts that are not expected to be consumed within twelve months following the balance sheet date are classified as strategic inventory, a noncurrent asset.

Accruals of Research and Development Costs

We recorded accruals for estimated costs of research, pre-clinical and clinical studies, and manufacturing development, which activities represent a major component of our research and development expenses. We make significant judgments and estimates in determining the accrual balance in each reporting period. Accrued clinical trial costs are based on estimates of the work completed under the service agreements, milestones achieved, patient enrollment and past experience with similar contracts and service providers.  Our estimate of the work completed, and associated costs to be accrued, includes our assessment of the information received from our third-party contract research organizations and the overall status of our clinical trial activities. In the past, we have not experienced any material deviations between accrued and actual clinical trial expenses. However, actual services performed, number of patients enrolled and the rate of patient enrollment may vary from our estimates, resulting in adjustments to clinical trial expense in future periods.

Stock-based compensation

We have granted stock options to our employees, directors and consultants. Stock-based compensation expense associated with granted stock options is based on the estimated grant date fair value using the Black-Scholes valuation model. Determining an estimate of the fair value of equity awards using the Black-Scholes valuation model requires the use of subjective assumptions related to expected stock price volatility, term, risk-free interest rate and dividend yield.

Equity awards to consultants are remeasured at fair value at each reporting date, until the awards vest.

Long-term obligation

The accounting for the Financing Agreement with Biopharma requires us to make certain estimates and assumptions, including the timing of royalty payments due to Biopharma, the expected rate of return to Biopharma, the split between current and long-term portions of the obligation, and the accretion of interest expense. Actual payment amounts will be based on Korlym receipts during the applicable quarter.  In no event will the total amount paid to Biopharma exceed $45.0 million.

Recently Issued Accounting Pronouncements

See Note 1, Basis of Presentation and Summary of Significant Accounting Policies in our audited financial statements.

ITE M 7A.  QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Quantitative and Qualitative Disclosures About Market Risk 

The primary objective of our investment activities is to preserve principal. As of December 31, 2015, the fair value of our cash and cash equivalents was $40.4 million and consisted primarily of a money market fund maintained at a major U.S. financial institution that invests primarily in short-term U.S. Treasury notes and bills. To minimize our exposure to interest rate and other market risks, we have limited the maturities of our investments to less than two years with an average maturity not to exceed one year. Due to the short-term nature of these instruments, a 10 percent increase or decrease in market interest rates would not have a material impact on the total value of our portfolio as of December 31, 201 5.

ITE M 8.  FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

The financial statements required by this item are set forth beginning at page F-1 of this report and are incorporated herein by reference. 

IT EM 9.  CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE

None.

IT EM 9A.  CONTROLS AND PROCEDURES

(a) Evaluation of Disclosure Controls and Procedures

We maintain disclosure controls and procedures that are designed to ensure that information required to be disclosed in our periodic and current reports that we file with the SEC is recorded, processed, summarized and reported within the time periods specified in the SEC's rules and forms, and that such information is accumulated and discussed with our management, including our Chief Executive Officer and Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosure. In designing and evaluating the disclosure controls and procedures, management recognized that any controls and procedures, no matter how well designed and operated, can provide only reasonable and not absolute assurance of achieving the desired control objectives.  In reaching a reasonable level of assurance, management necessarily was required to apply its judgment in evaluating the cost-benefit relationship of possible controls and procedures. In addition, the design of any system of controls also is based in part upon certain assumptions about the likelihood of future events, and we cannot assure you that any design will succeed in achieving its stated goals under all potential future conditions; over time, control may become inadequate because of changes in conditions, or the degree of compliance with policies or procedures may deteriorate. Because of the inherent limitations in a cost-effective control system, misstatements due to error or fraud may occur and not be detected.

As of December 31, 2015, our Chief Executive Officer and Chief Financial Officer have evaluated our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) of the Exchange Act) which were designed to ensure that the information required to be disclosed by us in this Annual Report on Form 10-K was recorded, processed, summarized and reported within the time periods specified in the SEC's rules and on Form 10-K.  Our disclosure controls and procedures are designed to provide reasonable, not absolute, assurance that the objectives of our disclosure control system are met. Based on the evaluation, our Chief Executive Officer and Chief Financial Officer have concluded that our disclosure controls and procedures are effective.

There were no changes in our internal controls over financial reporting during the quarter ended December 31, 2015 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

(b) Management's Report on Internal Control Over Financial Reporting

Our management is responsible for establishing and maintaining adequate internal control over financial reporting, as such term is defined in Exchange Act Rule 13a-15(f). Our internal control system is designed to provide reasonable assurance regarding the preparation and fair presentation of financial statements for external purposes in accordance with generally accepted accounting principles. All internal control systems, no matter how well designed, have inherent limitations and can provide only reasonable assurance that the objectives of the internal control system are met.

Our management , including our Chief Executive Officer and Chief Financial Officer, conducted an evaluation of the effectiveness of our internal control over financial reporting, based on criteria established in Internal Control – Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO) in 2013. Based on this evaluation, our management concluded that our internal control over financial reporting was effective as of December 31, 2015.

Our independent registered public accounting firm has issued an attestation report on our internal control over financial reporting as included below.

(c) Report of Independent Registered Public Accounting Firm

The Board of Directors and Stockholders of Corcept Therapeutics Incorporated

We have audited Corcept Therapeutics Incorporated's internal control over financial reporting as of December 31, 201 5 , based on criteria established in Internal Control – Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission ( 2013 framework) (the COSO criteria). Corcept Therapeutics Incorporated'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 included in the accompanying Management's Report on Internal Control Over Financial Reporting. Our responsibility is to express an opinion on 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 , assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, 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 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, Corcept Therapeutics Incorporated maintained, in all material respects, effective internal control over financial reporting as of December 31, 201 5 , based on the COSO criteria.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the 2015 financial statements of Corcept Therapeutics Incorporated and our report dated March 10 , 2016 expressed an unqualified opinion thereon.

/s/ Ernst & Young LLP

Redwood City, California

March 10 , 2016

IT EM 9B.  OTHER INFORMATION

None.

PART III

Certain information required by Part III is omitted from this Annual Report on Form 10-K because we expect to file with the U.S. Securities and Exchange Commission, not later than 120 days after the end of the fiscal year covered by this Annual Report on Form 10-K, a definitive proxy statement (the Proxy Statement), pursuant to Regulation 14A in connection with the solicitation of proxies for our 2016 Annual Meeting of Stockholders, and certain information included therein is incorporated herein by reference.

IT EM  10.  DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE

The information required by this Item will be included in the Proxy Statement and is incorporated herein by reference.

ITE M  11. EXECUTIVE COMPENSATION

Compensation Discussion and Analysis

The information required by this Item will be included in the Proxy Statement and is incorporated herein by reference.

IT EM 12.  SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS

The information required by this Item will be included in the Proxy Statement and is incorporated herein by reference.

ITE M  13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR INDEPENDENCE

The information required by this Item will be included in the Proxy Statement and is incorporated herein by reference.

IT EM  14. PRINCIPAL ACCOUNTING FEES AND SERVICES

The information required by this Item will be included in the Proxy Statement and is incorporated herein by reference.

PART IV

IT EM 15.  EXHIBITS, FINANCIAL STATEMENT SCHEDULES

The following documents are filed as part of this Form 10-K

(1) Financial Statements:

(2)  Financial Statement Schedules:

All schedules have been omitted because the information required to be set forth therein is not applicable or is shown in the financial statements or notes thereto.

(3) Exhibits:

Item 601 of Regulation S-K requires the exhibits listed below. Each management contract or compensatory plan or arrangement required to be filed as an exhibit to this Form 10-K has been identified.

(A)    EXHIBITS

# Confidential treatment granted

† Management contract or compensatory plan or arrangement

SIGN ATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below hereby constitutes and appoints Joseph K. Belanoff and G. Charles Robb, and each of them acting individually, as his or her true and lawful attorneys-in-fact and agents, each with full power of substitution, for him or her in any and all capacities, to sign any and all amendments to this report on Form 10-K and to file the same, with exhibits thereto and other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-fact and agents, with full power of each to act alone, full power and authority to do and perform each and every act and thing requisite and necessary to be done in connection therewith, as fully for all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, or his or their substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

Pursuant to the requirements of the Exchange Act, this Annual Report on Form 10-K has been signed by the following persons on behalf of the registrant and in the capacities and on the dates indicated:

CORCEPT THERAPEUTICS INCORPORATED

INDEX TO FINANCIAL STATEMENTS

REPORT OF INDEPENDENT REGI STERED PUBLIC ACCOUNTING FIRM

The Board of Directors and Stockholders of Corcept Therapeutics Incorporated

We have audited the accompanying balance sheets of Corcept Therapeutics Incorporated as of December 31, 201 5 and 201 4 and the related statements of comprehensive loss, stockholders' equity (deficit) and cash flows for each of the three years in the period ended December 31, 201 5 . 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 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 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 Corcept Therapeutics Incorporated at December 31, 201 5 and 201 4 , and the results of its operations and its cash flows for each of the three years in the period ended December 31, 201 5 , 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), Corcept Therapeutics Incorporated's internal control over financial reporting as of December 31, 201 5 , based on criteria established in Internal Control – Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission ( 2013 framework) and our report dated March 10 , 201 6 expressed an unqualified opinion thereon.

/s/ Ernst & Young LLP

Redwood City, California

March 10 , 2016

BALAN CE SHEETS

(in thousands, except per share amounts)

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

STATEMENTS OF  C OMPREHENSIVE LOSS

(in thousands, except per share amounts)

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

Statements of Stoc kholders Equity (DEFICIT)

( in thousands  )

fhiheir

The accompanying notes are an integral part of these financial statements

STATEMENTS OF CASH FLOWS

(in thousands)

The accompanying notes are an integral part of these financial statements

1. Bas is of Presentation and Summary of Significant Accounting Policies

Description of Business

Corcept Therapeutics Incorporated was incorporated in the State of Delaware in May 1998, and our headquarters are located in Menlo Park, California. We are a pharmaceutical company engaged in the discovery, development and commercialization of drugs that treat severe metabolic, oncologic and psychiatric disorders by modulating the effects of cortisol.  In 2012, the United States Food and Drug Administration (FDA) approved our first commercial product , Korlym ® (mifepristone) 300 mg Tablets , as a once-daily oral medication for the treatment of endogenous Cushing's syndrome. We released Korlym for sale in the United States in April 2012. We are conducting a Phase 1/2 study of mifepristone for the treatment of triple-negative breast cancer. In addition, we have discovered and patented a portfolio of proprietary, selective cortisol modulators and are advancing the most promising of them towards the clinic.  We plan to start two Phase 2 trials of our lead selective cortisol modulator, CORT125134. One will seek to treat patients with Cushing's syndrome. The other will study CORT125134 in combination with anti-cancer agents as a potential treatment for patients with solid-tumor cancers.

Use of Estimates

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

We evaluate our estimates and assumptions on an ongoing basis, including those related to our reserves for government rebates, potential product returns, excess/obsolete inventories, allowances for doubtful accounts, accruals of clinical and preclinical expenses, contingent liabilities, and the timing of payments with respect to our long-term financing agreement, which determine its effective interest rate.  We base our estimates on relevant experience and on other specific assumptions that we believe are reasonable.

Fair Value Measurements

We categorize financial instruments in a fair value hierarchy that prioritizes the information used to develop assumptions for measuring fair value. The fair value hierarchy gives the highest priority to quoted prices in active markets for identical assets or liabilities (Level 1 input), then to quoted prices in non-active markets or in active markets for similar assets or liabilities, inputs other than quoted prices that are observable for the asset or liability, and inputs that are not directly observable, but that are corroborated by observable market data for the asset or liability (Level 2 input), then the lowest priority to unobservable inputs, such as our own data about the assumptions that market participants would use in pricing an asset or liability (Level 3 input). Fair value is a market-based measurement, not an entity-specific measurement, and a fair value measurement should therefore be based on the assumptions that market participants would use in pricing the asset or liability.

Cash and Cash Equivalents

We consider all highly liquid investments purchased with maturities of three months or less from the date of purchase to be cash equivalents. Cash equivalents are carried at fair value as measured using Level 1 inputs, which approximates cost. As of December 31, 2015 and 2014 , all of our funds were held in checking and money market fund accounts maintained at a   major U.S. financial institution. 

Credit and Concentration Risks

O ur cash and cash equivalents are held in one financial institution . We are exposed to credit and concentration risk s in the event of default by the financial institution holding our funds and investments or by the entity or entities that issued the securities held by the fund s to the extent of the amount recorded on our balance sheet. We mitigate th ese risk s by investing in money market fund s that invest primarily in short-term U.S. Treasury notes and bills. We have never experienced a loss or lack of access to our operating or investment accounts.

In mid-2013 we transitioned all of our specialty pharmacy business to a new provider, Dohmen Life Science Services (Dohmen), formerly known as Centric Health Resources, Inc. Among other services, Dohmen dispenses Korlym to patients for us, with title to the medicine passing from us to the patient upon the patient's receipt of the drug.  Accordingly, our receivables risk is spread among various third-party payors – pharmacy benefit managers, insurance companies, private charities, government programs – and individual patients. We extend credit to third-party payors based on their creditworthiness. We monitor our exposure and record an allowance against uncollectible trade receivables as necessary. To date, we have not incurred any credit losses.

We have a concentration of risk in regard to the manufacture of our product. As of December 31, 2015, we had one tablet manufacturer for Korlym – AAI Pharma Services Corp. (AAI). In addition, we have a single-source manufacturer of mifepristone, the active pharmaceutical ingredient (API), in Korlym – Produits Chimiques Auxiliaires et de Synthèse SA (PCAS). If either of these

companies is unable to manufacture API or Korlym tablets in the quantities and time frame required, we may not be able to manufacture our product in a timely manner. In order to mitigate these risks related to the manufacture of our product, we purchased and hold in inventory additional quantities of mifepristone API and Korlym tablets.

Trade Receivables

Trade receivables are recorded net of customer allowances for co-pay assistance, doubtful accounts and sales returns.  See the discussion below under "Net Product Sales" regarding the methods for estimation of these allowances and sales returns. We determine our allowance for doubtful accounts based on existing contractual payment terms, actual payment patterns of our customers and individual customer circumstances. To date, we have determined that an allowance for uncollectible trade receivables is not required.

Inventory

We value our inventories at the lower of cost or net realizable value. We determine the cost of inventory using the specific identification method, which approximates a first-in, first-out basis. We write down inventory that has become obsolete or has a cost basis in excess of its expected net realizable value. Any expired inventory is disposed of and the related costs are recognized as cost of sales in the statement of comprehensive income (loss).

Inventory amounts that are not expected to be consumed within 12 months following the balance sheet date are classified as strategic inventory, a noncurrent asset.

We expense the manufacturing costs for product candidates incurred prior to regulatory approval as research and development expense as we incur them. When regulatory approval of a product is obtained, we begin capitalizing manufacturing costs related to the approved product into inventory .

Property and Equipment

We state property and equipment at cost less accumulated depreciation.  Property and equipment are depreciated using the straight-line method over the estimated useful lives of the assets, ranging from three to five years.

Long-term Obligation

In August 2012, we entered into a Purchase and Sale Agreement (Financing Agreement) with Biopharma Secured Debt Fund II Sub, S.à r.l (Biopharma), a private limited liability company organized under the laws of Luxembourg. Under the terms of the Financing Agreement, we received $30.0 million from Biopharma, which upon receipt we recorded as a long-term obligation. In return, we are obligated to make payments to Biopharma totaling $45.0 million. These payments equal a percentage of (i) our net product sales, which include sales from any product containing mifepristone or any of our proprietary selective cortisol modulators (Covered Products) , and (ii) cash or cash equivalents received from any licensing transaction or co-promotion arrangement involving Covered Products, including any upfront or milestone payments, if any (together, Korlym Receipts). Once we have paid Biopharma a total of $45.0 million, no more payments will be due and the obligation will be extinguished.

We recognize a portion of each quarterly payment under the Financing Agreement as interest expense, which we determine by calculating the interest rate to Biopharma implied by the stream of quarterly payments we expect to make. The amount shown on our balance sheet as the current portion is an estimate of the total payments we expect to make to Biopharma in the 12 months following December 31, 2015. We record the balance of the outstanding portion of the obligation as a long-term liability.

The amount and timing of our estimated quarterly payments to Biopharma are subject to significant uncertainty and are likely to change. Any changes in our assumed payment stream will change the accretion of interest expense and our split between the current and long-term portions of the obligation, although the total we will pay to Biopharma is fixed at $45.0 million.

See Note 5 ,   Long-Term Obligation , for additional information regarding this agreement.

Net Product Sales

We primarily sell Korlym directly to patients with the assistance of Dohmen Life Science Services (Dohmen), a specialty pharmacy. Prior authorization and confirmation of coverage by the patients' private or government insurance plan or by a third-party charity, such as the National Organization for Rare Disorders (NORD – discussed below), is a prerequisite for Dohmen to ship Korlym. We recognize revenue upon the delivery of our products to these patients.

We recognize product revenues from sales of Korlym upon delivery to patients as long as (i) there is persuasive evidence that an arrangement exists between ourselves and the customer, (ii) collectability is reasonably assured and (iii) the price is fixed or determinable.  Prior authorization or confirmation of coverage level by the patient's private insurance plan or government payor is a

prerequisite to the shipment of product to a patient.  In order to conclude that the price is fixed or determinable, we must be able to (i) calculate gross product revenues from the sales to our customers and (ii) reasonably estimate net product revenues.

We donate cash to NORD, an independent non-profit organization that helps patients with financial need pay for the treatment of Cushing's syndrome, which treatment may include Korlym. We do not include in revenue payments we receive from NORD.

We calculate gross product revenues based on the price that we charge our customers.  We estimate our net product revenues by deducting from our gross product revenues (a) trade allowances, such as discounts for prompt payment, (b) estimated government rebates and chargebacks, (c) reserves for expected product returns and (d) estimated costs of our patient co-pay assistance program.  We initially record estimates for these deductions at the time we recognize the gross revenue.  We update our estimates on a recurring basis as new information becomes available.

Government Rebates and Chargebacks: We are obligated to provide rebates and chargebac k s   to government programs, including Medicaid, on our product sales to eligible patients. We deduct the estimated amount of these rebates and chargebacks from our gross product revenue. We estimate rebates and chargebacks by applying the applicable rate to eligible sales in each period.

Allowances for Patient Assistance Program: We provide financial assistance to eligible patients whose insurance policies require them to pay high deductibles and co-payments. We calculate the cost of assistance by applying our program guidelines to the eligible sales in each period.

Sales Returns: We estimate the amount of Korlym that we believe will be returned and deduct that estimated amount from gross revenue at the time we recognize such revenue. When estimating future returns, we analyze quantitative and qualitative information including, but not limited to, actual return rates, the amount of product in the distribution channel, the expected shelf life of such product, current and projected product demand, the introduction of competing products that may erode demand, and broad economic and industry-wide indicators. If we cannot reasonably estimate product returns with respect to a particular sale, we defer recognition of revenue from that sale until we can make a reasonable estimate.

Because our sales through Dohmen, our specialty pharmacy, which represents the majority of our sales from July 1, 2013 forward, are made to individual patients who do not have the right to return the product, our exposure to product returns is limited to the specialty distributor channel and is not expected to be material.

Cost of Sales

Cost of sales includes the cost of product (the cost to manufacture Korlym, which includes material, third-party manufacturing costs and indirect personnel and other overhead costs) based on units for which revenue is recognized in the current period, as well as costs of stability testin g, logistics and distribution of the product. We began capitalizing Korlym production costs and the cost to acquire mifepristone, the active ingredient (API) in Korlym, as inventory following approval by the FDA in February 2012. Prior to receiving FDA approval for Korlym, we expensed all such costs when incurred as research and development expense. A portion of the product manufactured and the API acquired prior to FDA approval was available for commercial use. As of December 31, 2014, the majority of this pre-approval material has been consumed and the cost of sales for 2015 and future years will include the full cost of the product.

Research and Development

Research and development expenses consist of direct expenses, such as the cost of clinical trials, pre-clinical studies, the development of new compounds, manufacturing development, preparations for submissions to the FDA or other regulatory agencies, and the related overhead e xpenses. We expense as incurred nonrefundable payments to third - parties and our cost of acquiring technologies and materials used in research and development that have no alternative future use.

We base our cost accruals for clinical trials, research and preclinical activities on estimates of work completed under service agreements, milestones achieved, patient enrollment and past experience with similar contracts. Our estimates of work completed and associated cost accruals include our assessments of information from third-party contract research organizations and the overall status of clinical trial and other development and administrative activities. 

Segment Reporting

We determine our operating segments based on the way we organize our business to make operating decisions and assess performance. We have only one operating segment, which concerns the discovery, development and commercialization of pharmaceutical products.

Stock-Based Compensation

We account for stock-based compensation related to option grants to employees and directors under the fair value method, based on the value of the award at the grant date as determined using the Black-Scholes option valuation model. For service-based awards, we recognize expense over the requisite service period.

We recognize the expense of options granted to non-employees based on the fair-value based measurement of the option grants at the time of vesting. For service-based awards, we recognize expense over the requisite service period.

Income Taxes

We determine deferred tax assets and liabilities based on the differences between the financial reporting and tax bases of assets and liabilities, measured using the enacted tax rates that will be in effect when the differences are expected to reverse. A valuation allowance is recorded when it is more likely than not that the deferred tax asset will not be realized.

No amounts have been recognized as interest or penalties on income tax related matters. The determination of an accounting policy as to the classification of such costs has been deferred until such time as any such costs are incurred. 

Recently Issued Accounting Pronouncement s

In May 2014, the Financial Accounting Standards Board (FASB), jointly with the International Accounting Standards Board, issued a comprehensive new standard on revenue recognition from contracts with customers. The standard's core principle is that a reporting entity will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. In August 2015, the FASB issued an accounting standard update which defers the effective date of the new standard by one year. The standard will become effective for us beginning in the first quarter of 2018. Early application is permitted in 2017. Entities have the option of using either a full retrospective or a modified retrospective approach to adopt this new guidance. We are evaluating the impact of the adoption of this standard on our Consolidated Financial Statements.

In August 2014, the FASB issued ASU No. 2014-15-Disclosure of Uncertainties about an Entity's Ability to Continue as a Going Concern under ASC Subtopic 205-40, Presentation of Financial Statements-Going Concern. ASU No. 2014-15 provides guidance about management's responsibility to evaluate whether there is substantial doubt about an entity's ability to continue as a going concern and to provide related footnote disclosures. Management's evaluation should be based on relevant conditions and events that are known or reasonably knowable at the date that the financial statements are issued (or at the date that the financial statements are available to be issued when applicable). Substantial doubt about an entity's ability to continue as a going concern exists when relevant conditions and events, considered in the aggregate, indicate that it is probable that the entity will be unable to meet its obligations as they become due within one year after the date that the financial statements are issued (or available to be issued). ASU No. 2014-15 is effective for the Company in the fiscal year ended December 31, 2016 and early adoption is permitted. The Company is currently evaluating the impact of the pending adoption of ASU 2014-15 on its financial statements.

2. Significant Agreements

Commercial Agreements

In May 2013, we entered into a services agreement with Dohmen to provide exclusive specialty pharmacy and patient services programs for Korlym beginning July 1, 2013. Under the terms of this agreement, Dohmen acts as the exclusive specialty pharmacy distributor of Korlym in the United States, subject to certain exceptions. Among other services, Dohmen provides services related to pharmacy ope rations; patient intake, access and reimbursement; patient support; claims management and accounts receivable; and data and reporting. We provide Korlym to Dohmen, which it dispenses to patients. Dohmen does not take title to the product, which passes directly from us to the patient at the time the patient receives the medicine.

The initial term of the agreement is a period of three years, with successive automatic renewal terms of three years unless either party gives at least 180 days' prior notice of non-renewal. The agreement contains customary termination provisions, representations, warranties and covenants. Subject to certain limitations, we have agreed to indemnify Dohmen for certain third - party claims related to the product, and we have each agreed to indemnify the other for certain breaches of representations, warranties, covenants and other specified matters.

Manufacturing Agreements Related to Korlym

Active Pharmaceutical Ingredient

In March 2014, we entered into a new long-term manufacturing and supply agreement with PCAS for the manufacture of mifepristone, the active pharmaceutical ingredient (API) in Korlym. We have agreed to purchase a minimum percentage of our

mifepristone requirements from PCAS; the amount of the commitment will depend on our future needs. The initial term of the agreement is five years, with an automatic extension of one year unless either party gives 12 months' prior written notice that it does not want an extension. We have the right to terminate the agreement if PCAS is unable to manufacture the product for a consecutive nine-month period. 

Tablet Manufacture

In April 2014, we entered into a new manufacturing agreement with AAI Pharma for the manufacture and package of Korlym tablets. The initial term of this agreement is a period of three years, with consecutive automatic extensions of two years unless either party gives written notice – in the case of AAI Pharma, 18 months prior to the end of the applicable term, and in our case 12 months prior to the end of the applicable term – that it does not want such an extension. We have the right to terminate the agreement if AAI Pharma is unable to manufacture the product for a consecutive four-month period or if the product is withdrawn from the market.  There are no minimum purchase obligations under this agreement.

Research and Development Agreements

In 1998, we entered into an agreement with The Board of Trustees of Leland Stanford Junior University (Stanford) in which Stanford granted us an exclusive option to acquire an exclusive license for inventions and patents related to "Mifepristone for Psychotic Major Depression" and "Mifepristone and Alzheimer's Disease" owned by Stanford. ("Psychotic major depression" is referred to in this document as "psychotic depression"). In 1999, we exercised our option to acquire an exclusive license to patents covering the use of glucocorticoid receptor antagonists for the treatment of psychotic depression, early dementia, and cocaine-induced psychosis, as specified in the license agreement. This license agreement expires upon the expiration of the related patents or upon notification by us to Stanford. In exchange for the license, we paid Stanford an initial non-refundable fee, immediately issued 30,000 shares of our common stock to Stanford and are obligated to pay Stanford $50,000 per year as a nonrefundable royalty payment. In addition, we are obligated to pay additional milestone payments in the future, which are not material and which are creditable against future royalties and will pay a royalty based on net revenue generated by any product arising from the patent until its expiration.

We have also exclusively licensed from the University of Chicago two issued U.S. patents for the use of cortisol modulators in the treatment of triple-negative breast cancer, and a second patent family with applications in the United States and Europe having claims directed to the use of cortisol modulators to treat castration-resistant prostate cancer. In exchange for the license, we paid an initial non-refundable fee to the University of Chicago and are committed to additional annual and milestone payments in the future, which are not material and which are creditable against future royalties , and will pay a royalty based on net revenue generated by any product arising from the patent until its expiration.

In December 2013, we entered into an agreement with Chiltern to assist in the management and conduct of a clinical trial evaluating mifepristone for treatment of triple-negative breast cancer. The total commitment under this agreement is $ 3.1  million, but the actual amount to be paid is dependent on actual services provided under this agreement. Approximately $2.4  million of the costs under this agreement were incurred through December 31, 2015 , with the remainder to be incurred over the course of the trial.

In March 2014, we entered into an agreement with Quotient Clinical Limited, a clinical research organization, to assist in the management and conduct of our Phase 1 study of CORT125134, our lead selective cortisol modulator . The total commitment under the agreement is approximately $ 3.0 million, which is expected to be expended over an approximately a one -year period. Approximately $ 2.9  million of the costs under this agreement were incurred through December 31, 2015 , with the remainder to be incurred in 2016 .  

3. Fair Value of Financial Instruments

As of December 31, 2015 and 2014, we had invested our financial assets in a money market fund that can be converted to cash at par on demand. We measured these funds, which totaled $ 31.6  million and $ 21.9  million as of December 31, 2015 and 2014, respectively, at fair value, which approximates cost, as of the respective dates and classified them as Level 1 assets in the fair value hierarchy for financial assets. 

All cash equivalents and short-term investments held as of December 31, 2015 and 2014 were in active markets and valued based upon their quoted prices. We did not recognize any realized gains or losses on sales of investments for any period presented.

4. Composition of Certain Balance Sheet Items

Inventory

The composition of inventory was as follows: