PART I

B. CAPITALIZATION AND INDEBTEDNESS

Not applicable.

C. REASONS FOR THE OFFER AND USE OF PROCEEDS

Not applicable.

D. RISK FACTORS

Certain factors may have a material adverse effect on our business, financial condit ion and results of operations.  You should carefully consider the risks and uncertainties described below, in addition to other information co ntained in this Annual Report on Form 20-F, including our consolidated financial statements and related notes.  Our business, financial condition or results of operations could be materially and adversely affected if any of these risks occurs and, as a result, the market price of our ordinary shares could decline and you could lose all or part of your investment. Additional risks and uncertainties not presently known to us or that we currently deem immaterial also may have similar adverse effects on us.

Risks Related to Our Being a Development ‑Stage Company

We are a development ‑stage biopharmaceutical company and have a limited operating history on which to assess our business, have incurred significant losses over the last several years, and anticipate that we will continue to incur losses for the foreseeable future.

We are a development ‑stage biopharmaceutical company with a limited operating history. We have not yet demonstrated an ability to successfully complete a large ‑scale, pivotal clinical trial, obtain regulatory approval or manufacture and commercialize a product candidate. Consequently, we have no meaningful commercial operations upon which to evaluate our business and predictions about our future success or viability may not be as accurate as they could be if we had a history of successfully developing and commercializing pharmaceutical products.

Since inception, we have incurred significant operating losses. Our net loss attributed to Strongbridge Biopharma was $5.3 million , $9.7 million and $ 43. 6  million for the years ended December 31, 2013, 2014 and 2015, respectively. As of December 31, 2015, we had an accumulated deficit of $ 80.8 million. We have devoted substantially all of our financial resources to identifying, in ‑licensing, acquiring and developing our product candidates, including conducting clinical trials and providing general and administrative support for these operations to build our business infrastructure.

To date, we have financed our operations primarily through private placements of equity securities and the proceeds from our initial public offering of ordinary shares in the United States in October 2015. The amount of our future net losses will depend, in part, on the rate of our future expenditures and our ability to obtain funding through equity or debt financings, strategic collaborations or grants. To become and remain profitable, we must develop and eventually commercialize one or more of our product candidates with significant market potential. Biopharmaceutical product development is a highly speculative undertaking and involves a substantial degree of risk. It may be several years, if ever, before we receive regulatory approval and have a product candidate approved for commercialization. Even if we obtain regulatory approval to market a product candidate, our future revenue will depend upon the size of any

markets in which our product candidates may receive approval and our ability to achieve market acceptance and adequate market share for our product candidates in those markets. Further, because the potential markets in which our product candidates may ultimately receive regulatory approval are very small, we may never become profitable despite obtaining such market share and acceptance of our product candidates.

We expect to continue to incur significant expenses and increasing operating losses for the foreseeable future. We anticipate that our expenses will increase substantially if and as we:

 continue research and nonclinical and clinical development of our product candidates, including advancing our programs from preclinical development into clinical trials and increasing the number and size of our current clinical trials and preclinical studies;

 seek to identify, assess, in ‑license, acquire and develop additional product candidates;

 change or add manufacturers or suppliers;

 seek regulatory approvals for our product candidates that successfully complete clinical trials;

 establish a sales, marketing and distribution infrastructure to commercialize any products for which we may obtain regulatory approval;

 make up ‑front, milestone or other payments under any license arrangements;

 seek to maintain, protect and expand our intellectual property portfolio;

 seek to attract and retain skilled personnel;

 create additional infrastructure to support our operations as a U.S. listed company and our product development and planned future commercialization efforts; and

 experience any delays or encounter issues with any of the above, including, but not limited to, failed preclinical studies or clinical trials, complex results, safety issues or other regulatory challenges that may require either longer follow ‑up of existing preclinical studies or clinical trials or limitation of additional preclinical studies or clinical trials in order to pursue regulatory approval.

Further, the net losses we incur may fluctuate significantly from quarter ‑to ‑quarter and year ‑to ‑year, such that a period ‑to ‑period comparison of our results of operations may not be a good indication of our future performance. Moreover, if we incur substantial losses, we could be liquidated, and the value of our shares might be significantly reduced or the shares might be of no value.

We have never generated any revenue from product sales and may never be profitable.

We have no products approved for commercialization and have never generated any revenue from product sales. We will not generate revenue from product sales unless and until we successfully complete the development of, obtain regulatory approval for and commercialize one or more of our product candidates. Our ability to generate future revenue from product sales depends heavily on our success in many areas, including, but not limited to:

 completing research, preclinical or clinical development, as applicable, of our product candidates, including successfully completing clinical trials of our product candidates;

 integrating product candidates that we in ‑license or acquire, as well as completing research, formulation and process development, and preclinical or clinical development, as applicable, of those product candidates, including successfully completing clinical trials of those product candidates;

 obtaining regulatory approval our product candidates;

 incurring additional costs as we advance our product candidates;

 developing a sustainable and scalable manufacturing process for our product candidates, if approved;

 maintaining supply and manufacturing relationships with third parties that can conduct the manufacturing process development and provide adequate, in amount and quality, products to support clinical development and the market demand for our product candidates, if approved;

 developing a commercial organization and launching and commercializing product candidates for which we obtain regulatory approval, either directly or with a collaborator or distributor;

 obtaining market acceptance of our product candidates as viable treatment options;

 addressing any competing technological and market developments;

 identifying, assessing, in ‑licensing, acquiring and/or developing new product candidates;

 negotiating favorable terms in any collaboration, licensing or other arrangements into which we may enter;

 maintaining, protecting and expanding our portfolio of intellectual property rights, including patents, trade secrets and know ‑how; and

 attracting, hiring and retaining qualified personnel.

Given the numerous risks and uncertainties associated with pharmaceutical product development, we are unable to accurately predict the timing or amount of increased expenses or when, or if, we will be able to achieve profitability. Our expenses could increase beyond expectations if we are required by the FDA or the EMA, or any comparable foreign regulatory agency, to perform nonclinical and preclinical studies or clinical trials in addition to those that we currently anticipate.

Even if one or more of the product candidates that we develop is approved for commercial sale, we anticipate incurring significant costs associated with commercializing any approved product candidate. Further, our revenue will be dependent, in part, upon the size of the markets in the territories for which we gain regulatory approval, the accepted price for the product, the ability to obtain coverage and adequate reimbursement, and whether we own the commercial rights for that territory. If the number of our addressable patients is not as significant as we estimate, the indication approved by regulatory authorities is narrower than we expect, or the treatment population is narrowed by competition, physician choice or treatment guidelines, we may not generate significant revenue from sales of our product candidates. If we are not able to generate sufficient revenue from the sale of any approved products, we may never become profitable. Even if we do achieve profitability, we may not be able to sustain or increase profitability on a quarterly or annual basis. Our failure to successfully execute any of the foregoing would decrease the value of our company and could impair our ability to raise capital, expand our business or continue our operations. A decline in the value of our company could cause you to lose all or part of your investment.

We expect that we will need substantial additional funding before we can expect to complete the development of our product candidates and become profitable from sales of our approved products, if any.

We are currently advancing our product can didates through clinical development. Development of our product candidates is expensive, and we expect our research and development expenses to increase in connection with our ongoing activities, particularly as we continue our ongoing trials and initiate new trials of COR ‑003, COR ‑005 and any other product candidates we may seek to develop. We expect that we will require additional capital to obtain regulatory approval for, and to commercialize, our product candidates.

As of December 31, 2015, Strongbridge had cash and cash equivalents of $51. 6 mi llion and no outstanding debt. We currently believe that our existing cash and cash equivalents   is sufficient to fund planned operations into the fourth quarter of 2017, which is after the expected receipt of data from the COR-003 SONICS trial.     However, this estimate is based on assumptions that may prove to be incorrect, our operating plans may change as a result of many factors that may currently be unknown to us, and we may need to seek additional funds sooner than planned. Our future funding requirements will depend on many factors, including, but not limited to:

 the scope, rate of progress, results and cost of our clinical trials, nonclinical testing, formulation, process development and other related activities;

 the cost of manufacturing clinical supplies and establishing commercial supplies of our product candidates, if approved, and any products that we may develop;

 the number and characteristics of product candidates that we pursue, including any additional product candidates we may in ‑license or acquire;

 the cost of filing, prosecuting, defending and enforcing our patent claims and other intellectual property rights;

 the cost of defending potential intellectual property disputes, including patent infringement actions brought by third parties against us or our product candidates;

 the cost, timing and outcomes of regulatory approvals;

 the cost and timing of establishing sales, marketing and distribution capabilities; and

 the terms and timing of any collaborative, licensing and other arrangements that we may establish, including any required milestone and royalty payments thereunder.

Any additional fundraising efforts may divert our management from their day ‑to ‑day activities, which may compromise our ability to develop and commercialize our product candidates, if approved. In addition, we cannot guarantee that future financing will be available in sufficient amounts or on terms acceptable to us, if at all. Moreover, the terms of any financing may adversely affect the holdings or the rights of our shareholders and the issuance of additional securities, whether equity or debt, by us, or the possibility of such issuance, may cause the market price of our ordinary shares to decline.

If we are unable to obtain funding on a timely basis, we may be required to significantly curtail, delay or discontinue one or more of our research or development programs or the commercialization of any product candidates, if approved, or be unable to expand our operations or otherwise capitalize on our business opportunities, as desired.

Raising additional capital may cause dilution to our shareholders, restrict our operations or require us to relinquish rights to our intellectual property or future revenue streams.

Until such time, if ever, as we can generate substantial product revenue, we expect to finance our cash needs through a combination of equity offerings, debt financings, grants, and license and development agreements in connection with any collaborations. We do not have any committed external source of funds. In the event we seek additional funds, we may raise additional capital through the sale of equity or convertible debt securities. In such an event, the ownership interests of our current shareholders will be diluted, and the terms of these securities may include liquidation or other preferences that would adversely affect their rights as shareholders. Debt financing, if available, could result in increased fixed payment obligations and may involve agreements that include restrictive covenants, such as limitations on our ability to incur additional debt, make capital expenditures, acquire, sell or license intellectual property rights or declare dividends, and other operating restrictions that could hurt our ability to conduct our business.

Further, if we raise additional funds through collaborations, strategic alliances, or marketing, distribution or licensing arrangements with third parties, we may have to relinquish valuable rights to our intellectual property or future revenue streams. If we are unable to raise additional funds when needed, we may be required to delay, limit, reduce or terminate our product development or future commercialization efforts, or grant rights to develop and market product candidates that we would otherwise prefer to develop and market ourselves.

We may not be successful in executing our growth strategy or our growth strategy may not deliver the anticipated results.

We plan to source new product candidates that are complementary to our existing product candidates by in ‑licensing or acquiring them from other companies or academic institutions. If we are unable to identify, in ‑license or acquire and integrate product candidates in accordance with this strategy, our ability to pursue our growth strategy would be compromised.

Research programs and business development efforts to identify new product candidates require substantial technical, financial and human resources. We may focus our efforts and resources on potential programs or product candidates that ultimately prove to be unsuccessful. Our research programs, business development efforts or licensing attempts may fail to yield additional complementary or successful product candidates for clinical development and commercialization for a number of reasons, including, but not limited to, the following:

 our research or business development methodology or search criteria and process may be unsuccessful in identifying potential product candidates with a high probability of success for development progression;

 we may not be able or willing to assemble sufficient resources or expertise to in ‑license, acquire or discover additional product candidates;

 for product candidates we seek to in ‑license or acquire, we may not be able to agree to acceptable terms with the licensor or owner of those product candidates;

 our product candidates may not succeed in preclinical studies or clinical trials;

 we may not succeed in formulation or process development;

 our product candidates may be shown to have harmful side effects or may have other characteristics that may make the products unmarketable or unlikely to receive regulatory approval;

 competitors may develop alternatives that render our product candidates obsolete or less attractive;

 product candidates that we develop may be covered by third parties’ patents or other exclusive rights;

 product candidates that we develop may not allow us to leverage our expertise and our development and commercial infrastructure as currently expected;

 the market for a product candidate may change during our program so that such a product may become unreasonable to continue to develop;

 a product candidate may not be capable of being produced in commercial quantities at an acceptable cost, or at all; and

 a product candidate may not be accepted as safe and effective by patients, the medical community or third ‑party payors.

If any of these events occurs, we may not be successful in executing our growth strategy or our growth strategy may not deliver the anticipated results.

We may expend our limited resources to pursue a particular product candidate or indication and fail to capitalize on product candidates or indications that may be more profitable or for which there is a greater likelihood of success.

We have limited financial and managerial resources. As a result, we may forego or delay pursuit of opportunities with other product candidates or for other indications that later prove to have greater commercial potential. Our resource allocation decisions may cause us to fail to capitalize on viable commercial products or profitable market opportunities. Our spending on current and future research and development programs and product candidates for specific indications may not yield any commercially viable products. If we do not accurately evaluate the commercial

potential or target market for a particular product candidate, we may relinquish valuable rights to that product candidate through collaboration, licensing or other royalty arrangements in cases in which it would have been more advantageous for us to retain sole development and commercialization rights to such product candidate.

If we acquire other businesses or in ‑license or acquire other product candidates and are unable to integrate them successfully, our financial performance could suffer.

If we are presented with appropriate opportunities, we may acquire other businesses. We have had limited experience integrating other businesses or product candidates, or in ‑licensing or acquiring other product candidates. Since our formation in 1996, we have in ‑licensed or acquired three product candidates: COR ‑004, COR ‑005 and BP ‑2002. The acquisition of COR ‑005 occurred recently, and we are still in the early stages of integrating it into our business.  The integration process following these or any future transactions may produce unforeseen operating difficulties and expenditures, and may absorb significant management attention that would otherwise be directed to the ongoing development of our business. Also, in any future in ‑licensing or acquisition transactions, we may issue shares of stock that would result in dilution to existing shareholders, incur debt, assume contingent liabilities or create additional expenses related to amortizing intangible assets, any of which might harm our financial results and cause our stock price to decline. Any financing we might need for future transactions may be available to us only on terms that restrict our business or impose costs that reduce our net income.

We are highly dependent on our key personnel, including our president and chief executive officer, as well as our ability to recruit, retain and motivate additional qualified personnel.

We are highly dependent on Matthew Pauls, our President and Chief Executive Officer, and Dr. Ruth Thieroff ‑Ekerdt, our Chief Medical Officer. Some members of our management team, including Matthew Pauls, have only been our employees since August 2014. As a result, they have limited experience working for us and working together as a team. Any member of management or employee can terminate his or her relationship with us at any time. Although we have included non ‑compete provisions in their respective employment or consulting agreements, as the case may be, such arrangements might not be sufficient for the purpose of preventing such key personnel from entering into agreements with any of our competitors. The inability to recruit and retain qualified personnel, or the loss of Mr. Pauls or Dr. Thieroff ‑Ekerdt could result in competitive harm as we could experience delays in reaching our in ‑licensing, acquisition, development and commercialization objectives.

We also depend substantially on highly qualified managerial, sales and technical personnel who are difficult to hire and retain. There is currently a shortage of skilled personnel in our industry, which is likely to continue. As a result, competition for skilled personnel is intense and the turnover rate can be high. We may not be able to attract and retain personnel on acceptable terms given the competition among numerous pharmaceutical and biotechnology companies for individuals with similar skill sets. In addition, failure to succeed in preclinical studies or clinical trials may make it more challenging to recruit and retain qualified personnel. Recruiting and retaining other qualified employees, consultants and advisors for our business, including scientific and technical personnel, will be critical to our success.

We may expand our organization and experience difficulties in managing this growth, which could disrupt our operations.

As our development, commercialization, in ‑licensing, and acquisition plans and strategies develop, and as we advance the preclinical and clinical development of our product candidates, we expect to experience significant growth in the number of our employees and the scope of our operations, particularly in the areas of managerial, operational, sales, marketing, financial, legal and other resources. To manage our anticipated future growth, we must continue to implement and improve our managerial, operational and financial systems, expand our facilities, and continue to recruit and train additional qualified personnel. Our management may need to divert a disproportionate amount of its attention away from our day ‑to ‑day activities and devote a substantial amount of time to managing these growth activities. Due to our limited financial resources, we may not be able to effectively manage the expansion of our operations, which may result in weaknesses in our infrastructure, operational mistakes, loss of business opportunities, loss of employees and reduced productivity among remaining employees. Any such growth could require significant capital expenditures and may divert financial resources from other projects, such as the in ‑licensing, acquisition and development of additional

product candidates. If our management is unable to effectively manage our growth, our expenses may increase more than expected, our ability to generate or grow revenue could be reduced and we may not be able to implement our business strategy. Our future financial performance and our ability to compete effectively will depend, in part, on our ability to effectively manage any future growth.

Our business and operations would suffer in the event of system failures.

Our computer systems, as well as those of our clinical research organizations, or CROs, and other contractors and consultants, are vulnerable to damage from computer viruses, unauthorized access, natural disasters, including hurricanes, terrorism, war and telecommunication and electrical failures. If such an event were to occur and cause interruptions in our operations, it could result in a material disruption of our product development programs. For example, the loss of preclinical study or clinical trial data from completed, ongoing or planned preclinical studies or clinical trials 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 personal, confidential or proprietary information, we could incur liability and the further development of our product candidates could be delayed.

Risks Related to the Development a nd Clinical Testing of Our Product Candidates

We depend entirely on the success of a limited number of product candidates, which are still in clinical development. If we do not obtain regulatory approval for and successfully commercialize one or more of our product candidates or we experience significant delays in doing so, we may never become profitable.

We currently have no products approved for sale and may never be able to obtain regulatory approval of or commercialize any products. We have invested, and continue to expect to invest, a significant portion of our efforts and financial resources in the development of a limited number of product candidates, which are still in clinical development. Our ability to generate product revenues, which we do not expect will occur for at least the next several years, if ever, will depend heavily on our successful development and eventual commercialization, if approved, of one or more of our product candidates. We are not permitted to market or promote any of our product candidates before we receive regulatory approval from the FDA, EMA or any comparable foreign regulatory agency, and we may never receive such regulatory approval for any of our product candidates. The success of COR ‑003 and COR ‑005 will depend on several additional factors, including, but not limited to, the following:

 successfully completing formulation and process development activities;

 successfully completing clinical trials that demonstrate the efficacy and safety of our product candidates;

 acceptance of our product candidates by patients and the medical community;

 a continued acceptable safety profile following approval;

 obtaining and maintaining healthcare coverage and adequate reimbursement; and

 competing effectively with other therapies, including with respect to the sales and marketing of our product candidates, if approved.

Many of these factors are beyond our control, including clinical development, the regulatory submission process, potential threats to our intellectual property rights and changes in the competitive landscape. If we do not achieve one or more of these factors in a timely manner or at all, we could experience significant delays or an inability to successfully complete clinical trials or eventually commercialize our product candidates, if approved.

Clinical trials are very expensive, time consuming and difficult to design and implement, and involve uncertain outcomes. Furthermore, results of earlier preclinical studies and clinical trials may not be predictive of results of future preclinical studies or clinical trials.

To obtain the requisite regulatory approvals to market and sell any of our product candidates, we must demonstrate through extensive preclinical studies and clinical trials that our products are safe and effective in humans. Clinical testing is expensive and can take many years to complete, and its outcome is inherently uncertain. Failure can occur at any time during the clinical trial process. The results of preclinical studies and earlier clinical trials may not be predictive of the results of later ‑stage clinical trials. For example, the results generated to date in preclinical studies or clinical trials for our product candidates do not ensure that later preclinical studies or clinical trials will demonstrate similar results. Further, we have limited clinical data for each of our product candidates and have not completed Phase 3 clinical trials for any of our product candidates. 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. Companies in the biopharmaceutical industry may suffer setbacks in advanced clinical trials due to lack of efficacy or adverse safety profiles, notwithstanding promising results in earlier clinical trials. For example, COR ‑003 was previously studied for the treatment of type 2 diabetes. In December 2005, prior to the initiation of the first clinical trial by DiObex, our licensee, the FDA placed a clinical hold relating to a safety concern for use of a dosage above 600 mg/day. DiObex modified the clinical trial protocol to limit the highest dose to 600 mg/day, and the clinical hold was lifted by the FDA in February 2006. Furthermore, COR ‑003 did not demonstrate a reduction in blood glucose levels in a small Phase 2 clinical trial in patients with type 2 diabetes mellitus, the original indication for which it was being developed. We may experience delays in our ongoing or future preclinical studies or clinical trials, and we do not know whether future preclinical studies or clinical trials will begin on time, need to be redesigned, enroll an adequate number of subjects or patients on time or be completed on schedule, if at all. Clinical trials may be delayed, suspended or terminated for a variety of reasons, including delay or failure to:

 obtain authorization from regulators or institutional review boards, or IRBs, to commence a clinical trial at a prospective clinical trial site;

 reach agreements on acceptable terms with prospective CROs and clinical trial sites, the terms of which can be subject to extensive negotiation and may vary significantly among different CROs and clinical trial sites;

 recruit and enroll a sufficient number of patients in clinical trials to ensure adequate statistical power to detect statistically significant treatment effects;

 address any noncompliance with regulatory requirements or safety concerns that arise during the course of a clinical trial;

 have patients complete clinical trials or return for post ‑treatment follow ‑up;

 have CROs or other third parties comply with regulatory requirements, adhere to the trial protocol or meet contractual obligations in a timely manner or at all;

 identify a sufficient number of clinical trial sites and initiate them within the planned timelines; and

 manufacture sufficient quantities of the product candidate to complete clinical trials.

Positive or timely results from preclinical or early stage clinical trials do not ensure positive or timely results in late stage clinical trials or regulatory approval by the FDA, EMA or any comparable foreign regulatory agency. In addition, many of the factors that cause, or lead to, a delay in the commencement or completion of clinical trials may also ultimately lead to the denial of regulatory approval of our product candidates. Preclinical and clinical data are often susceptible to varying interpretations and analyses. Many companies that believed their product candidates performed satisfactorily in preclinical studies and clinical trials have nonetheless failed to obtain regulatory approval for the product candidates. The FDA, EMA and any comparable foreign regulatory agency have substantial discretion in the approval process and in determining when or whether regulatory approval will be obtained for any of our product candidates. Even if we believe the data collected from clinical trials of our product candidates are promising, such data may not be sufficient to support approval by the FDA, EMA or any comparable foreign regulatory agency.

In some instances, there can be significant variability in safety or efficacy results between different clinical trials of the same product candidate due to numerous factors, including changes in clinical trial procedures set forth in protocols, differences in the size and type of the patient populations, adherence to the administration regimen and other clinical trial protocols, and the rate of dropout among clinical trial participants. In the case of our late stage clinical product candidates, results may differ in general on the basis of the larger number of clinical trial sites and additional countries involved in Phase 3 clinical trials. Different countries have different standards of care and different levels of access to care for patients, which in part drives the heterogeneity of the patient populations that enroll in our studies.

We have met with the FDA regarding the development pathway of COR ‑003. The FDA recommended, but did not require, a control group in the clinical trial design. We concluded that it was not practical to use any approved drug to serve as an active control in our Phase 3 clinical trial of COR ‑003. We are using an open ‑label, single ‑arm design because in the past the FDA has deemed that the concurrent use of a placebo control as monotherapy is unethical for the treatment of active endogenous Cushing’s syndrome due to the progressive and serious nature of the condition .     In February 2016, however, a Phase 3 clinical trial was registered by another company with the FDA to evaluate their monotherapy product candidate against co ncurrent use of placebo control.  In addition, based on our analysis and feedback from experts whom we have consulted, we concluded that it was not practical to use any approved drug to serve as an active control due to the unsuitable mode of action, route of administration and side effect profile of available approved therapies. Studies lacking an active control group are more likely to be subject to unanticipated variability in study results that can potentially lead to flawed conclusions because they do not allow for discrimination of patient outcomes. As a result, even if we achieve the clinical trial’s end points, the FDA or other regulatory authorities could view our study results as potentially biased and may ultimately require that we conduct a randomized, controlled clinical trial of COR ‑003 in order to obtain approval for commercialization. Unfavorable data from our clinical trials may restrict the potential development and commercialization of COR ‑003 or lead to the termination of its development.

In June 2015, we acquired COR ‑005 and were not involved in and had no control over the preclinical and clinical development of this product candidate prior to such acquisition.  As a result , we are dependent on the prior research and development of COR ‑005 having been conducted in accordance with the applicable protocol, legal, regulatory and scientific standards, the accuracy of reported results of all clinical trials conducted prior to our acquisition and the correct interpretation of collected data from these clinical trials .  These factors could result in increased costs and delays in the development of COR ‑005, which could hurt our ability to generate future revenues from this product candidate.

The regulatory approval process of the FDA, EMA or any comparable foreign regulatory agency may be lengthy, time consuming and unpredictable.

Our future success is dependent upon our ability to successfully develop, obtain regulatory approval for and then successfully commercialize one or more of our product candidates. Although certain of our employees have prior experience with submitting marketing applications to the FDA, EMA or any comparable foreign regulatory agency, we, as a company, have not submitted such applications for our product candidates. We cannot be certain that any of our product candidates will be successful in clinical trials or receive regulatory approval. Applications for any of our product candidates could fail to receive regulatory approval for many reasons, including, but not limited to, the following:

 the FDA, EMA or any comparable foreign regulatory agency may disagree with the design or implementation of our clinical trials or our interpretation of data from nonclinical trials or clinical trials;

 the population studied in the clinical program may not be sufficiently broad or representative to assure safety in the full population for which we seek approval, including reliance on foreign clinical data;

 the data collected from clinical trials of our product candidates may not be sufficient to support a finding that has statistical significance or clinical meaningfulness or support the submission of a new drug application, or NDA, or other submission, or to obtain regulatory approval in the United States or elsewhere;

 we may be unable to demonstrate to the FDA, EMA or any comparable foreign regulatory agency that a product candidate’s risk ‑benefit ratio for its proposed indication is acceptable;

 the FDA, EMA or any comparable foreign regulatory agency may fail to approve the manufacturing processes, test procedures and specifications or facilities of third ‑party manufacturers with which we contract for clinical and commercial supplies; and

 the approval policies or regulations of the FDA, EMA or any comparable foreign regulatory agency may significantly change in a manner rendering our clinical data insufficient for approval.

Any of our current or future product candidates could take a significantly longer time to gain regulatory approval than expected or may never gain regulatory approval. This could delay or eliminate any potential product revenue by delaying or terminating the potential commercialization of our product candidates. For example, although our Phase 3 clinical program for COR ‑003 has an open ‑label, single ‑arm design because a concurrent placebo control as monotherapy was deemed unethical, and an approved drug to serve as active control (monotherapy) or as background therapy (adjunctive therapy) suitable for an international study population was deemed impractical, the FDA has recommended the inclusion of a control group. In February 2016, a Phase 3 clinical trial was registered by another company with the FDA to evaluate their monotherapy product candidate against concurrent use of placebo control.  Therefore, even if we achieve the clinical trial’s endpoints, the FDA and other regulatory authorities may ultimately require that we conduct a randomized, controlled clinical trial of COR ‑003 in order to obtain approval for commercialization.

We intend to seek formal advice and guidance from the FDA and the EMA prior to advancing COR ‑005 into further studies and pivotal clinical trials. If the feedback we receive is different from what we currently anticipate, this could delay the development and regulatory approval process for this product candidate.

We generally plan to seek regulatory approval to commercialize our product candidates in the United States, the European Union and other key global markets. To obtain regulatory approval in other countries, we must comply with numerous and varying regulatory requirements of such other countries regarding safety, efficacy, chemistry, manufacturing and controls, clinical trials, commercial sales, pricing and distribution of our product candidates. Even if we are successful in obtaining approval in one jurisdiction, we cannot ensure that we will obtain approval in any other jurisdictions. Failure to obtain marketing authorization for our product candidates will result in our being unable to market and sell such products. If we fail to obtain approval in any jurisdiction, the geographic market for our product candidates could be limited. Similarly, regulatory agencies may not approve the labeling claims that are necessary or desirable for the successful commercialization of our product candidates.

If serious adverse, undesirable or unacceptable side effects are identified during the development of our product candidates or following regulatory approval, if any, we may need to abandon our development of such product candidates.

If our product candidates are associated with serious adverse, undesirable or unacceptable side effects, we may need to abandon their development or limit development to certain uses or sub ‑populations in which such side effects are less prevalent, less severe or more acceptable from a risk ‑benefit perspective. Many compounds that initially showed promise in preclinical or early stage testing have later been found to cause side effects that restricted their use and prevented further development of the compound for larger indications.

For example, in our clinical trials of COR ‑003 to date, adverse events have included headache, nausea, back pain, dizziness, diarrhea and liver enzyme elevations. For COR ‑005, which is given by subcutaneous injections, adverse events have included injection site reaction such as swelling, itching and pain. In addition, headache and gastrointestinal effects such as nausea and diarrhea were observed for COR ‑005. These adverse events can be dose ‑dependent and may increase in frequency and severity if we increase the dose to increase efficacy. Occurrence of serious treatment ‑related side effects could impede clinical trial enrollment, require us to halt the clinical trial, and prevent receipt of regulatory approval from the FDA, EMA or any comparable foreign regulatory agency. They could also adversely affect physician or patient acceptance of our product candidates.

Discovery of previously unknown problems, or increased focus on a known problem, with an approved product may result in restrictions on its permissible uses, including withdrawal of the medicine from the market. Currently, ketoconazole is required to include a “black box” warning on its label for use as an antifungal related to liver toxicity in

the United States. Ketoconazole is the racemic mixture, meaning it contains both mirror image forms of the molecule in a 1:1 ratio, from which we draw our single enantiomer product candidate COR ‑003. If COR ‑003 is required to include a similar “black box” warning on its label, it may limit our ability to commercialize the product, if approved.

Additionally, if one or more of our product candidates receives regulatory approval, and we or others later identify undesirable side effects caused by such product(s), a number of potentially significant negative consequences could result, including, but not limited to:

 withdrawal by regulatory authorities of approvals of such product;

 seizure of the product by regulatory authorities;

 recall of the product;

 restrictions on the marketing of the product;

 requirement by regulatory authorities of additional warnings on the label, such as a black box warning;

 requirement that we create a medication guide outlining the risks of such side effects for distribution to patients;

 commitment to expensive additional safety studies prior to launch as a prerequisite of approval by regulatory authorities of such product;

 commitment to expensive post ‑marketing studies as a prerequisite of approval by regulatory authorities of such product;

 initiation of legal action against us claiming to hold us liable for harm caused to patients; and

 harm to our reputation and resulting harm to physician or patient acceptance of our products.

Any of these events could prevent us from achieving or maintaining market acceptance of the particular product candidate, if approved, and could significantly harm our business, financial condition, and results of operations.

We may find it difficult to enroll patients in our clinical trials given the limited number of patients who have the diseases for the treatment of which our product candidates are being studied. Difficulty in enrolling patients in our clinical trials could delay or prevent clinical trials of our product candidates.

Successful and timely completion of clinical trials will require that we enroll a sufficient number of patient candidates. Clinical trials may be subject to delays as a result of patient enrollment taking longer than anticipated or patient withdrawal. Patient enrollment depends on many factors, including the size and nature of the patient population, eligibility criteria for the clinical trial, the proximity of patients to clinical sites, the design of the clinical protocol, the availability of competing clinical trials, the availability of new drugs approved for the indication the clinical trial is investigating, and clinicians’ and patients’ perceptions as to the safety and potential advantages of the product candidate being studied in relation to other available therapies.

Because we are focused on addressing rare diseases, there are limited patient pools from which to draw in order to complete our clinical trials in a timely and cost ‑effective manner. Delays in the completion of any clinical trial of our product candidates will increase our costs, slow down our product candidate development and approval process, and delay or potentially jeopardize our ability to commence product sales and generate revenue. In addition, many of the factors that may lead to a delay in the commencement or completion of clinical trials may also ultimately lead to the denial of regulatory approval of our product candidates.

We may become exposed to costly and damaging liability claims, either when testing our product candidates in the clinic or at the commercial stage, and our product liability insurance may not cover all damages from such claims.

We are exposed to potential product liability and professional indemnity risks that are inherent in the research, development, manufacturing, marketing, and use of pharmaceutical products. We currently have no products that have been approved for commercial sale. However, the current and future use of product candidates by us in clinical trials, and the sale of any approved products in the future, may expose us to liability claims. These claims might be made by patients that use the product, healthcare providers, pharmaceutical companies, or others selling such products. Any claims against us, regardless of their merit, could be difficult and costly to defend, and could compromise the market acceptance of our product candidates or any prospects for commercialization of our product candidates, if approved.

Although the clinical trial process is designed to identify and assess potential side effects, it is always possible that a drug, even after regulatory approval, may exhibit unforeseen side effects. If any of our product candidates were to cause adverse side effects during clinical trials or after approval of the product candidate, we may be exposed to substantial liabilities. Physicians and patients may not comply with any warnings that identify known potential adverse effects and patients who should not use our product candidates.

We purchase liability insurance in connection with our clinical trials. It is possible that our liabilities could exceed our insurance coverage. We intend to expand our insurance coverage to include the sale of commercial products if we obtain regulatory approval for any of our product candidates. However, we may not be able to maintain insurance coverage at a reasonable cost or obtain insurance coverage that will be adequate to satisfy any liability that may arise. If a successful product liability claim or series of claims is brought against us for uninsured liabilities or in excess of insured liabilities, our assets may not be sufficient to cover such claims and our business operations could be impaired.

Risks Related to Commercialization of Our Product Candidates

We have never commercialized a product candidate and we may lack the necessary expertise, personnel and resources to successfully commercialize any of our products that receive regulatory approval on our own or together with suitable partners.

We have never commercialized a product candidate. Our operations to date have been limited to organizing and staffing our company, business planning, raising capital, in ‑licensing or acquiring our product candidates, identifying potential product candidates and undertaking preclinical studies and clinical trials of our product candidates. We currently have no sales force or marketing or distribution capabilities. To achieve commercial success of our product candidates, if approved, we will have to develop our own sales, marketing and supply capabilities or outsource these activities to a third party.

Factors that may affect our ability to commercialize our product candidates on our own include recruiting and retaining adequate numbers of effective sales and marketing personnel, obtaining access to or persuading adequate numbers of physicians to prescribe our product candidates and other unforeseen costs associated with creating an independent sales and marketing organization. Developing a sales and marketing organization requires significant investment, is time consuming and could delay the launch of our product candidates. We may not be able to build an effective sales and marketing organization in the United States, the European Union or other key global markets. If we are unable to build our own distribution and marketing capabilities or to find suitable partners for the commercialization of our product candidates, we may not generate revenues from them.

We operate in a highly competitive and rapidly changing industry, which may result in our competitors discovering, developing or commercializing competing products before or more successfully than we do, or our entering a market in which a competitor has commercialized an established competing product, and we may not be successful in competing with them.

The development and commercialization of new drug products is highly competitive and subject to significant and rapid technological change. Our success is highly dependent upon our ability to in ‑license, acquire, develop and obtain regulatory approval for new and innovative drug products on a cost ‑effective basis and to market them

successfully. In doing so, we face and will continue to face intense competition from a variety of businesses, including large, fully integrated, well ‑established pharmaceutical companies who already possess a large share of the market, specialty pharmaceutical companies and biopharmaceutical companies, academic institutions, government agencies and other private and public research institutions in Europe, the United States and other jurisdictions.

We are currently aware of various companies that are marketing existing drugs that may compete with our product candidates such as Corcept Therapeutics and Novartis. Corcept Therapeutics markets Korlym (mifepristone) in the United States. Korlym is indicated for the control of hyperglycemia secondary to hypercortisolism in patients with endogenous Cushing’s syndrome who have type 2 diabetes or glucose intolerance and have failed surgery or are not candidates for surgery. The product has already received regulatory approval from the FDA and was launched in the United States in April 2012. Similarly, Novartis markets Signifor (pasireotide), a somatostatin analog approved for the treatment of adults with Cushing’s disease for whom pituitary surgery is not an option or has not been curative. In 2012, Signifor was approved by the EMA for the treatment of Cushing’s disease, and was approved by the FDA in December 2012. It is also an approved somatostatin analog (or SSA) therapy for the treatment of acromegaly. The product has been marketed in the United Kingdom, Germany and other European countries since 2012, and in the United States since the first half of 2013. Additionally, in 2014, the EMA approved ketoconazole for the treatment of endogenous Cushing’s syndrome. Ketoconazole is the most commonly prescribed drug therapy for the treatment of endogenous Cushing’s syndrome, even though it is not approved for this use in the United States. Regulatory approval of ketoconazole in the United States for the treatment of endogenous Cushing’s syndrome could significantly increase competition for COR ‑003 due to their similar mechanisms of action.

Other companies acquiring and developing or marketing drug therapies or products for rare diseases include Ipsen, Pfizer, GP Pharma, Italfarmaco, HRA and Chiasma. We anticipate this competition to increase in the future as new companies enter the endocrinology and rare diseases markets. In addition, the health care industry is characterized by rapid technological change, and new product introductions or other technological advancements could make some or all of our products obsolete.

The highly competitive nature of and rapid technological changes in the biotechnology and pharmaceutical industries could render our product candidates or our technology obsolete or non ‑competitive. Our competitors may, among other things:

 have similar or better product candidates or technologies;

 possess greater financial and human resources as well as supporting clinical data;

 develop and commercialize products that are safer, more effective, less expensive, or more convenient or easier to administer;

 obtain regulatory approval more quickly;

 establish superior proprietary positions;

 have access to greater manufacturing capacity;

 seek patent protection that competes with our product candidates;

 implement more effective approaches to sales and marketing; or

 enter into more advantageous collaborative arrangements for research, development, manufacturing and marketing of products.

The successful commercialization of our product candidates will depend in part on the extent to which governmental authorities and health insurers establish adequate coverage and reimbursement levels and pricing policies.

The successful commercialization of our product candidates, if approved, will depend, in part, on the extent to which coverage and reimbursement for our products or procedures using our products will be available from government

and health administration authorities, private health insurers and other third ‑party payors. To manage healthcare costs, many governments and third ‑party payors increasingly scrutinize the pricing of new technologies and require greater levels of evidence of favorable clinical outcomes and cost ‑effectiveness before extending coverage and adequate reimbursement to such new technologies. In the United States, the Medicare Prescription Drug, Improvement, and Modernization Act of 2003, or the Medicare Modernization Act, changed the way Medicare covers and pays for pharmaceutical products. The legislation expanded Medicare coverage for drug purchases by the elderly under a new Part D and introduced a new reimbursement methodology based on average sale prices for physician ‑administered drugs. In addition, this legislation provided authority for limiting the number of drugs that will be covered in any therapeutic class. Cost ‑reduction initiatives and other provisions of this legislation could decrease the coverage and reimbursement that we receive for any approved products. While the Medicare Modernization Act applies only to drug benefits for Medicare beneficiaries, private payors often follow Medicare coverage policy and payment limitations in setting their own reimbursement rates. Therefore, any reduction in reimbursement that results from the Medicare Modernization Act may result in a similar reduction in payments from private payors. In light of such challenges to prices and increasing levels of evidence of the benefits and clinical outcomes of new technologies, we cannot be sure that coverage will be available for any product candidate that we commercialize, and, if available, that the reimbursement rates will be adequate. If we are unable to obtain adequate levels of coverage and reimbursement for our product candidates, our ability to generate revenue will be compromised.

Our potential customers, including hospitals, physicians and other healthcare providers that purchase certain injectable drugs administered during a procedure, such as our product candidates, generally rely on third ‑party payors to pay for all or part of the costs and fees associated with the drug and the procedures administering the drug. These third ‑party payors may pay separately for the drug or may bundle or otherwise include the costs of the drug in the payment for the procedure. We are unable to predict at this time whether our product candidates, if approved, will be eligible for such separate payments. To the extent there is no separate payment for our product candidates, there may be further uncertainty as to the adequacy of reimbursement amounts. Nor can we predict at this time the adequacy of payments, whether made separately for the drug and procedure or with a bundled or otherwise aggregate payment amount for the drug and procedure. In addition, obtaining and maintaining adequate coverage and reimbursement status is time consuming and costly.

Because each third ‑party payor individually approves coverage and reimbursement levels, obtaining coverage and adequate reimbursement is a time consuming, costly and sometimes unpredictable process. We may be required to provide scientific and clinical support, medical necessity or both for the use of any product to each third ‑party payor separately with no assurance that approval would be obtained, and we may need to conduct expensive pharmacoeconomic studies in order to demonstrate the cost ‑effectiveness, medical necessity or both of our products. This process could delay the market acceptance of any product and could have a negative effect on our future revenues and operating results.

Third ‑party payors may deny coverage and reimbursement status altogether of a given drug product, or cover the product, but may also establish prices at levels that are too low to enable us to realize an appropriate return on our investment in product development. Because the rules and regulations regarding coverage and reimbursement change frequently, in some cases on short notice, even when there is favorable coverage and reimbursement, future changes may occur that adversely impact such favorable coverage and reimbursement status. Further, the net reimbursement for drug products may be subject to additional reductions if there are changes to laws that presently restrict imports of drugs from countries where they may be sold at lower prices than in the United States.

The unavailability or inadequacy of third ‑party coverage and reimbursement could negatively affect the market acceptance of our product candidates and the future revenues we may expect to receive from those products. In addition, we are unable to predict what additional legislation or regulation relating to the healthcare industry or third ‑party coverage and reimbursement may be enacted in the future, or what effect such legislation or regulation would have on our business.

Our products may not gain market acceptance, in which case we may not be able to generate product revenues.

Even if the FDA, EMA or any comparable foreign regulatory agency approves the marketing of any product candidates that we develop, physicians, healthcare providers, patients or the medical community may not accept or use them. Efforts to educate the medical community and third ‑party payors on the benefits of our product candidates may require significant resources and may not be successful. If COR ‑003, COR ‑005 or any other product candidate that we develop does not achieve an adequate level of acceptance, we may not generate significant product revenues or any profits from operations. The degree of market acceptance of COR ‑003, COR ‑005 or any of our product candidates that are approved for commercial sale will depend on a variety of factors, including, but not limited to:

 whether clinicians and potential patients perceive our product candidates to have better efficacy, safety and tolerability profile, and ease of use compared with our competitors;

 the timing of market introduction;

 the number of competing products;

 our ability to provide acceptable evidence of safety and efficacy;

 the prevalence and severity of any side effects;

 relative convenience and ease of administration;

 cost ‑effectiveness;

 patient diagnostics and screening infrastructure in each market;

 marketing and distribution support; and

 availability of coverage, reimbursement and adequate payment from health maintenance organizations and other third ‑party payors, both public and private.

In addition, the potential market opportunity for COR ‑003, COR ‑005 or any other product candidate we may develop is difficult to estimate precisely. Our estimates of the potential market opportunity are predicated on several key assumptions such as industry knowledge and publications, third ‑party research reports and other surveys. While we believe that our internal assumptions are reasonable, these assumptions may be inaccurate. If any of the assumptions proves to be inaccurate, then the actual market for COR ‑003 or our other product candidates could be smaller than our estimates of the potential market opportunity. If the actual market for COR ‑003 or our other product candidates is smaller than we expect, or if the products fail to achieve an adequate level of acceptance by physicians, health care payors and patients, our product revenue may be limited and we may be unable to achieve or maintain profitability. Further, given the limited number of treating physicians, if we are unable to convince a significant number of such physicians of the value of our product candidates, we may be unable to achieve a sufficient market share to make our products, if approved, profitable.

Risks Related to Our Reliance on Third Parties

We rely on third parties to conduct our nonclinical and clinical trials and if these third parties perform in an unsatisfactory manner, our business could be substantially harmed.

We have relied upon and plan to continue to rely upon third ‑party CROs to conduct and monitor and manage data for our ongoing nonclinical and clinical programs, and may not currently have all of the necessary contractual relationships in place to do so. Once we have established contractual relationships with such third ‑party CROS, we will have only limited control over their actual performance of these activities. Nevertheless, we are responsible for ensuring that each of our trials is conducted in accordance with the applicable protocol, legal, regulatory, environmental and scientific standards and our reliance on the CROs does not relieve us of our regulatory responsibilities.

We and our CROs and other vendors are required to comply with current Good Manufacturing Practices, or cGMP, current Good Clinical Practices, or cGCP, and Good Laboratory Practice, or GLP, which are regulations and guidelines enforced by the FDA, the Competent Authorities of the Member States of the European Union and any comparable foreign regulatory agency for all of our product candidates in nonclinical and clinical development. Regulatory authorities enforce these regulations through periodic inspections of study sponsors, principal investigators, trial sites and other contractors. If we or any of our CROs or vendors fail to comply with applicable regulations, the data generated in our nonclinical and clinical trials may be deemed unreliable and the FDA, EMA or any comparable foreign regulatory agency may require us to perform additional nonclinical and clinical trials before approving our marketing applications. We cannot assure you that upon inspection by a given regulatory authority, such regulatory authority will determine that all of our clinical trials comply with cGCP regulations. In addition, our clinical trials must be conducted with products 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.

Our business involves the controlled use of hazardous materials, chemicals, biologicals and radioactive compounds. Substantially all such use is outsourced to third ‑party CRO manufacturers and clinical sites. Although we believe that our third ‑party CROs safety procedures for handling and disposing of such materials comply with industry standards, there will always be a risk of accidental contamination or injury. By law, radioactive materials may only be disposed of at certain approved facilities. If liable for an accident, or if it suffers an extended facility shutdown, we or our CROs could incur significant costs, damages or penalties.

Our CROs are not our employees, and except for remedies available to us under our agreements with such CROs, we cannot control whether or not they devote sufficient time and resources to our ongoing nonclinical and clinical programs. If our CROs do not successfully carry out their contractual duties or obligations or meet expected deadlines, if they need to be replaced or if the quality or accuracy of the data they obtain is compromised due to the failure to adhere to our protocols, regulatory requirements or for other reasons, our clinical trials may be extended, delayed or terminated, and we may not be able to obtain regulatory approval for or successfully commercialize our product candidates. Our CROs may also generate higher costs than anticipated. As a result, our results of operations and the commercial prospects for our product candidates would be harmed, our costs could increase, and our ability to generate revenue could be delayed.

If any of our relationships with these third ‑party CROs terminates, we may not be able to enter into arrangements with alternative CROs or to do so on commercially reasonable terms. If we are able to replace a CRO, switching or adding additional CROs involves additional cost and requires management time and focus and there is a natural transition period when a new CRO commences work. As a result, delays could occur, which could hurt our ability to meet our desired clinical development timelines. Though we carefully manage our relationships with our CROs, there can be no assurance that we will not encounter similar challenges or delays in the future.

The failure of our suppliers to supply us with the agreed upon drug substance or drug product could hurt our business.

We do not currently, and do not expect to in the future, independently conduct manufacturing activities for our product candidates. We expect to rely on third ‑party suppliers for the drug substance and drug product for our product candidates. The failure of these suppliers to perform as contracted, or the need to identify new suppliers, could result in a delay in the development of our product candidates. A delay in the development of our product candidates or having to enter into a new agreement with a different third party on less favorable terms than we have with our current suppliers could hurt our business.

We and our collaborators and contract manufacturers are subject to significant regulation with respect to manufacturing our product candidates. The manufacturing facilities on which we rely may not continue to meet regulatory requirements or may not be able to meet supply demands.

All entities involved in the preparation of therapeutics for clinical trials or commercial sale, including our existing contract manufacturers for our product candidates, are subject to extensive regulation. Components of a finished therapeutic product approved for commercial sale or used in late ‑stage clinical trials must be manufactured in accordance

with cGMP. These regulations govern manufacturing processes and procedures, including record keeping, and the implementation and operation of quality systems to control and assure the quality of investigational products and products approved for sale. Poor control of production processes can lead to the introduction of contaminants or to inadvertent changes in the properties or stability of our product candidates that may not be detectable in final product testing. We, our collaborators or our contract manufacturers must supply all necessary documentation in support of an NDA or foreign equivalent on a timely basis and must adhere to GLP and cGMP regulations enforced by the FDA and other regulatory agencies through their facilities inspection program. Some of our contract manufacturers have never produced a commercially approved pharmaceutical product and therefore have not obtained the requisite regulatory authority approvals to do so. The facilities and quality systems of some or all of our collaborators and third ‑party contractors must pass a pre ‑approval inspection for compliance with the applicable regulations as a condition of regulatory approval of our product candidates or any of our other potential products. In addition, the regulatory authorities may, at any time, audit or inspect a manufacturing facility involved with the preparation of our product candidates or our other potential products or the associated quality systems for compliance with the regulations applicable to the activities being conducted. Although we oversee the contract manufacturers, we cannot control the manufacturing process of, and are completely dependent on, our contract manufacturing partners for compliance with the regulatory requirements. If these facilities do not pass a pre ‑approval plant inspection, regulatory approval of the products may not be granted or may be substantially delayed until any violations are corrected to the satisfaction of the regulatory authority, if ever.

The regulatory authorities also may, at any time following approval of a product for sale, audit the manufacturing facilities of our collaborators and third ‑party contractors. If any such inspection or audit identifies a failure to comply with applicable regulations or if a violation of our product specifications or applicable regulations occurs independent of such an inspection or audit, we or the relevant regulatory authority may require remedial measures that may be costly and/or time consuming for us or a third party to implement, and that may include the temporary or permanent suspension of a clinical trial or commercial sales or the temporary or permanent closure of a facility.

If we, our collaborators or any of our third ‑party manufacturers fail to maintain regulatory compliance, the FDA or another applicable regulatory authority could impose regulatory sanctions including, among other things, refusal to approve a pending application our product candidates, withdrawal of an approval or suspension of production.

Additionally, if the supply from one approved manufacturer is interrupted, an alternative manufacturer would need to be qualified through an NDA supplement or equivalent foreign regulatory filing, which could result in further delay. The regulatory agencies may also require additional studies if a new manufacturer is relied upon for commercial production. Switching manufacturers may involve substantial costs and is likely to result in a delay in our desired clinical and commercial timelines.

These factors could cause us to incur higher costs and could cause the delay or termination of clinical trials, regulatory submissions, required approvals or commercialization of our product candidates. Furthermore, if our suppliers fail to meet contractual requirements and we are unable to secure one or more replacement suppliers capable of production at a substantially equivalent cost, our clinical trials may be delayed or we could lose potential revenue.

Our reliance on third parties requires us to share our trade secrets, which increases the possibility that a competitor will discover them or that our trade secrets will be misappropriated or disclosed.

Because we rely on third parties to develop and manufacture our product candidates, we must, at times, share trade secrets with them. We seek to protect our proprietary technology in part by entering into confidentiality agreements and, if applicable, material transfer agreements, collaborative research agreements, consulting agreements or other similar agreements with our collaborators, advisors, employees, and consultants prior to beginning research or disclosing proprietary information. These agreements typically limit the rights of the third parties to use or disclose our confidential information, such as trade secrets. Despite the contractual provisions employed when working with third parties, the need to share trade secrets and other confidential information increases the risk that such trade secrets become known by our competitors, are inadvertently incorporated into the technology of others, or are disclosed or used in violation of these agreements. Given that our proprietary position is based, in part, on our know ‑how and trade secrets, a competitor’s

discovery of our trade secrets or other unauthorized use or disclosure would impair our competitive position and may harm our business.

Risks Related to Our Intellectual Property

If we or our licensors are unable to obtain and maintain effective patent rights for our technologies, product candidates or any future product candidates, or if the scope of the patent rights obtained is not sufficiently broad, we may not be able to compete effectively in our markets.

In addition to the exclusivity provided for our product candidates with regulatory orphan drug status, we rely upon a combination of patents, trade secret protection and confidentiality agreements to protect the intellectual property related to our technologies and product candidates. Our success depends in large part on our and our licensors’ ability to obtain and maintain patent and other intellectual property protection in the United States and in other countries with respect to our proprietary technology and product candidates.

We have sought to protect our proprietary position by filing patent applications in the United States and abroad related to our novel technologies and products that are important to our business. This process is expensive and time consuming, and we may not be able to file and prosecute all necessary or desirable patent applications at a reasonable cost, in a timely manner or in all jurisdictions. It is also possible that we will fail to identify patentable aspects of our research and development output before it is too late to obtain patent protection. Moreover, in some circumstances, we do not have the right to control the preparation, filing and prosecution of patent applications, or to maintain the patents, covering technology that we license from third parties. Therefore, these patents and applications may not be prosecuted and enforced in a manner consistent with the best interests of our business.

The patent position of biotechnology and pharmaceutical companies generally is highly uncertain and involves complex legal and factual questions for which legal principles remain unsolved. The patent applications that we own or in ‑license may fail to result in issued patents with claims that cover our product candidates in the United States or in foreign countries. Publications of discoveries in the scientific literature often lag behind the actual discoveries, and patent applications in the United States and other jurisdictions remain confidential for a period of time after filing, and some remain so until issued. Therefore, we cannot be certain that we were the first to file any patent application related to our product candidates, or whether we were the first to make the inventions claimed in our owned patents or pending patent applications, nor can we know whether those from whom we license patents were the first to make the inventions claimed or were the first to file. As a result, the issuance, scope, validity, enforceability and commercial value of our patent rights are highly uncertain. There is no assurance that all potentially relevant prior art relating to our patents and patent applications has been found, which can invalidate a patent or prevent a patent from issuing from a pending patent application. Even if patents do successfully issue, and even if such patents cover our product candidates, third parties may challenge their validity, enforceability or scope, which may result in such patents being narrowed, found unenforceable or invalidated, which could allow third parties to commercialize our technology or products and compete directly with us, without payment to us, or result in our inability to manufacture or commercialize products without infringing third ‑party patent rights. Furthermore, even if they are unchallenged, our patents and patent applications may not adequately protect our intellectual property, provide exclusivity for our product candidates, prevent others from designing around our claims or provide us with a competitive advantage. Any of these outcomes could impair our ability to prevent competition from third parties.

We and/or our licensors have filed several patent applications covering various aspects of our product candidates. We cannot offer any assurances about which, if any, patents will issue, the breadth of any such patent, or whether any issued patents will be found invalid and unenforceable or will be challenged by third parties. Any successful opposition to these patents or any other patents owned by or licensed to us after patent issuance could deprive us of rights necessary for the successful commercialization of any product candidates that we may develop. Further, if we encounter delays in regulatory approvals, the period of time during which we could market a product candidate under patent protection could be reduced.

We may not have sufficient patent terms to effectively protect our products and business.

Patents have a limited lifespan. In the United States, the natural expiration of a patent is generally 20 years after it is first filed. Although various extensions may be available, the life of a patent, and the protection it affords, is limited. Given the amount of time required for the development, testing and regulatory review of new product candidates, patents protecting such candidates might expire before or shortly after such product candidates are commercialized. As a result, our owned and licensed patent portfolio may not provide us with sufficient rights to exclude others from commercializing products similar or identical to ours or otherwise provide us with a competitive advantage. Even if patents covering our product candidates are obtained, once the patent life has expired for a product, we may be open to competition from generic medications.

While patent term extensions in the United States and under supplementary protection certificates in the European Union may be available to extend the patent exclusivity term for our product candidates, we cannot provide any assurances that any such patent term extension will be obtained and, if so, for how long.

Patent policy and rule changes could increase the uncertainties and costs surrounding the prosecution of our patent applications and the enforcement or defense of our issued patents.

Changes in either the patent laws or interpretation of the patent laws in the United States and other countries may diminish the value of our patents or narrow the scope of our patent protection. The laws of foreign countries may not protect our rights to the same extent as the laws of the United States. Assuming the other requirements for patentability are met, in the United States prior to March 15, 2013, the first to invent the claimed invention is entitled to the patent, while outside the United States, the first to file a patent application is entitled to the patent. After March 15, 2013, under the Leahy ‑Smith America Invents Act, or the AIA, enacted on September 16, 2011, the United States has moved to a first inventor to file system. The AIA also includes a number of significant changes that affect the way patent applications will be prosecuted and may also affect patent litigation. The effects of these changes are currently unclear as the United States Patent and Trademark Office, or the USPTO, is still implementing various regulations, the courts have yet to address many of these provisions and the applicability of the act and new regulations on specific patents discussed herein have not been determined and would need to be reviewed. In general, the AIA and its implementation could increase the uncertainties and costs surrounding the prosecution of our patent applications and the enforcement or defense of our issued patents. In addition, recent U.S. Supreme Court rulings have narrowed the scope of patent protection available in certain circumstances and weakened the rights of patent owners in certain situations. In addition to increasing uncertainty with regard to our ability to obtain patents in the future, this combination of events has created uncertainty with respect to the value of patents, once obtained. Depending on future actions by the U.S. Congress, the federal courts and the USPTO, the laws and regulations governing patents could change in unpredictable ways that would weaken our ability to obtain new patents or to enforce our existing patents and patents that we might obtain in the future.

Third ‑party claims of intellectual property infringement may expose us to substantial liability or prevent or delay our development and commercialization efforts.

Our commercial success depends in part on our ability to develop, manufacture, market and sell our product candidates, if approved, and use our proprietary technology without alleged or actual infringement, misappropriation or other violation of the patents and proprietary rights of third parties. There have been many lawsuits and other proceedings involving patent and other intellectual property rights in the biotechnology and pharmaceutical industries, including patent infringement lawsuits, interferences, oppositions and reexamination proceedings before the USPTO, and corresponding foreign patent offices. Numerous U.S. and foreign issued patents and pending patent applications, which are owned by third parties, exist in the fields in which we are developing product candidates. Some claimants may have substantially greater resources than we do and may be able to sustain the costs of complex intellectual property litigation to a greater degree and for longer periods of time than we could. In addition, patent holding companies that focus solely on extracting royalties and settlements by enforcing patent rights may target us. As the biotechnology and pharmaceutical industries expand and more patents are issued, the risk increases that our product candidates may be subject to claims of infringement of the intellectual property rights of third parties.

Third parties may assert that we are employing their proprietary technology without authorization. There may be third ‑party patents or patent applications with claims to compositions, formulations, methods of manufacture or methods of treatment related to the use or manufacture of our product candidates. We cannot be sure that we know of each and every patent and pending application in the United States and abroad that is relevant or necessary to the commercialization of our product candidates. Because patent applications can take many years to issue, there may be currently pending patent applications that may later result in issued patents upon which our product candidates may infringe. In addition, third parties may obtain patents in the future and claim that use of our technologies infringes upon these patents. If any third ‑party patents were held by a court of competent jurisdiction to cover the manufacturing process of any of our product candidates, any compositions formed during the manufacturing process or any final product itself, the holders of any such patents may be able to block our ability to commercialize such product candidate unless we obtained a license under the applicable patents, or until such patents expire or are finally determined to be invalid or unenforceable. Similarly, if any third ‑party patents were held by a court of competent jurisdiction to cover aspects of our compositions, formulations, or methods of treatment, prevention or use, the holders of any such patents may be able to block our ability to develop and commercialize the applicable product candidate unless we obtained a license or until such patent expires or is finally determined to be invalid or unenforceable. In either case, such a license may not be available on commercially reasonable terms, or at all. Even if we were able to obtain a license, it could be non ‑exclusive, thereby giving our competitors access to the same technologies licensed to us.

Parties making claims against us may obtain injunctive or other equitable relief, which could effectively block our ability to further develop and commercialize one or more of our product candidates, if approved. Defense of these claims, regardless of their merit, would involve substantial litigation expense and would be a substantial diversion of employee resources from our business. In the event of a successful claim of infringement against us, we may have to pay substantial damages, including treble damages and attorneys’ fees for willful infringement, pay royalties, redesign our infringing products or obtain one or more licenses from third parties, which may be impossible or require substantial time and monetary expenditure.

Additional competitors could enter the market with generic versions of our products, which may result in a decline in sales of affected products.

Under the Hatch ‑Waxman Act, a pharmaceutical manufacturer may file an abbreviated new drug application, or ANDA, seeking approval of a generic copy of an approved innovator product. Under the Hatch ‑Waxman Act, a manufacturer may also submit an NDA under section 505(b)(2) that references the FDA’s prior approval of the innovator product. A 505(b)(2) NDA product may be for a new or improved version of the original innovator product. Hatch ‑Waxman also provides for certain periods of regulatory exclusivity, which preclude FDA approval, or, in some circumstances, FDA filing and reviewing, of an ANDA or 505(b)(2) NDA. These include, subject to certain exceptions, the period during which an FDA ‑approved drug is subject to orphan drug exclusivity. Although COR ‑003 is being developed as a new chemical entity, or NCE, we intend to rely on orphan drug exclusivity rather than NCE exclusivity for nonpatent protection of COR ‑003. In addition to the benefits of regulatory exclusivity, an innovator NDA holder may have patents claiming the active ingredient, product formulation or an approved use of the drug, which would be listed with the product in the FDA publication, “Approved Drug Products with Therapeutic Equivalence Evaluations,” known as the “Orange Book.” If there are patents listed in the Orange Book, a generic or 505(b)(2) applicant that seeks to market its product before expiration of the patents must include in the ANDA what is known as a “Paragraph IV certification,” challenging the validity or enforceability of, or claiming non ‑infringement of, the listed patent or patents. Notice of the certification must be given to the innovator, too, and if within 45 days of receiving notice the innovator sues to protect its patents, approval of the ANDA is stayed for 30 months, or as lengthened or shortened by the court.

Accordingly, if COR ‑003 or any of our other product candidates is approved, competitors could file ANDAs for generic versions of our product candidates, or 505(b)(2) NDAs that reference our product candidates, respectively. If there are patents listed for our product candidates in the Orange Book, those ANDAs and 505(b)(2) NDAs would be required to include a certification as to each listed patent indicating whether the ANDA applicant does or does not intend to challenge the patent. We cannot predict whether any patents issuing from our pending patent applications will be eligible for listing in the Orange Book, how any generic competitor would address such patents, whether we would sue on any such patents or the outcome of any such suit.

We may not be successful in securing or maintaining proprietary patent protection for products and technologies we develop or license. Moreover, if any patents that are granted and listed in the Orange Book are successfully challenged by way of a Paragraph IV certification and subsequent litigation, the affected product could immediately face generic competition and its sales would likely decline rapidly and materially. Should sales decline, we may have to write off a portion or all of the intangible assets associated with the affected product and our ability to generate revenue could be compromised.

Although we are not currently involved in any litigation, we may be involved in lawsuits to protect or enforce our patents or the patents of our licensors, which could be expensive, time consuming and unsuccessful.

Competitors may infringe upon our patents or the patents of our licensors. Although we are not currently involved in any litigation, if we or one of our licensing partners were to initiate legal proceedings against a third party to enforce a patent covering one of our product candidates, the defendant could counterclaim that the patent covering our product candidate is invalid and/or unenforceable, or request declaratory judgment that there is no infringement. In patent litigation in the United States, defendant counterclaims alleging invalidity, noninfringement and/or unenforceability are commonplace. Grounds for a validity challenge could be an alleged failure to meet any of several statutory requirements, including lack of novelty, nonobviousness or non ‑lack of enablement. Grounds for an unenforceability assertion could be an allegation that someone connected with prosecution of the patent withheld material relevant information from the USPTO, or made a misleading statement, during prosecution. The outcome following legal assertions of invalidity and unenforceability is unpredictable.

Interference or derivation proceedings provoked by third parties or brought by us or declared by the USPTO may be necessary to determine the priority of inventions with respect to our patents or patent applications or those of our licensors. An unfavorable outcome could require us to cease using the related technology or to attempt to license rights to it from the prevailing party. Our business could be harmed if the prevailing party does not offer us a license on commercially reasonable terms, or at all. Our defense of litigation or interference proceedings may fail and, even if successful, may result in substantial costs, and distract our management and other employees. In addition, the uncertainties associated with litigation could compromise our ability to raise the funds necessary to continue our clinical trials, continue our research programs, license necessary technology from third parties or enter into development partnerships that would help us bring our product candidates to market, if approved.

Furthermore, because of the substantial amount of discovery required in connection with intellectual property litigation, there is a risk that some of our confidential information could be compromised by disclosure during this type of litigation. There could also be public announcements of the results of hearings, motions or other interim proceedings or developments. If securities analysts or investors perceive these results to be negative, it could hurt the market price of our ordinary shares.

We have not yet registered a trademark and failure to secure or maintain adequate protection for our trademarks could adversely affect our business.

We have filed a U.S., Canadian and International (Madrid Protocol) trademark application designating Australia, China, European Community, India, Israel, Japan, Mexico and Turkey for the mark, “Strongbridge Biopharma.” If the U.S. or any foreign trademark offices raise any objections, we may be unable to overcome such objections. In addition, in the USPTO and in comparable agencies in many foreign jurisdictions, third parties are given an opportunity to oppose pending trademark applications and to seek to cancel registered trademarks. Oppositions or cancellation proceedings have been filed and may in the future be filed against our trademarks, and our trademarks may not survive such proceedings.

Furthermore, third parties may allege in the future, that a trademark or trade name that we elect to use for our product candidates may cause confusion in the marketplace. We evaluate such potential allegations in the course of our business, and such evaluations may cause us to change our commercialization or branding strategy for our product candidates, which may require us to incur additional costs. Moreover, any name we propose to use with our product candidate in the United States must be approved by the FDA, regardless of whether we have registered it, or applied to register it, as a trademark. The FDA typically conducts a review of proposed product names, including an evaluation of

potential for confusion with other product names. If the FDA objects to any of our proposed proprietary product names, we may be required to expend significant additional resources in an effort to identify a suitable substitute name that would qualify under applicable trademark laws, not infringe the existing rights of third parties and be acceptable to the FDA.

At times, competitors may adopt trade names or trademarks similar to ours, thereby impeding our ability to build brand identity and possibly leading to market confusion. Over the long term, if we are unable to establish name recognition based on our trademarks and trade names, then we may not be able to compete effectively and our business may be adversely affected. Our efforts to enforce or protect our proprietary rights related to trademarks, domain names or copyrights may be ineffective and could result in substantial costs and diversion of resources.

In addition, there could be potential trade name or trademark infringement claims brought by owners of other registered trademarks alleging that the use of a corporate name or logo, product names or other signs by which we distinguish our products and services are infringing their trademark rights. The outcome of such claims is uncertain and may adversely affect our freedom to use our corporate name or other relevant signs. If litigation arises in this area, it may lead to significant costs and diversion of management and employee attention.

We may be subject to claims that our employees, consultants or independent contractors have wrongfully used or disclosed confidential information of third parties or that our employees have wrongfully used or disclosed alleged trade secrets of their former employers.

We may employ individuals who were previously employed at universities or other biotechnology or pharmaceutical companies, including our competitors or potential competitors. Although we try to ensure that our employees, consultants and independent contractors do not use the proprietary information or know ‑how of others in their work for us, and we are not currently subject to any claims that our employees, consultants or independent contractors have wrongfully used or disclosed confidential information of third parties, we may in the future be subject to such claims. Litigation may be necessary to defend against these claims. If we fail in defending any such claims, in addition to paying monetary damages, we may lose valuable intellectual property rights or personnel. Even if we are successful in defending against such claims, litigation could result in substantial costs and be a distraction to management and other employees.

We may be subject to claims challenging the inventorship of our patents and other intellectual property.

Although we are not currently experiencing any claims challenging the inventorship of our patents or ownership of our intellectual property, we may in the future be subject to claims that former employees, collaborators or other third parties have an interest in our patents or other intellectual property as an inventor or co ‑inventor. For example, we may have inventorship disputes arise from conflicting obligations of consultants or others who are involved in developing our product candidates. Litigation may be necessary to defend against these and other claims challenging inventorship. If we fail in defending any such claims, in addition to paying monetary damages, we may lose valuable intellectual property rights, such as exclusive ownership of, or right to use, valuable intellectual property. Even if we are successful in defending against such claims, litigation could result in substantial costs and be a distraction to management and other employees.

We may not be able to protect our intellectual property rights throughout the world.

Filing, prosecuting and defending patents on product candidates in all countries throughout the world would be prohibitively expensive, and our intellectual property rights in some countries outside the United States can be less extensive than those in the United States. In addition, the laws of some foreign countries do not protect intellectual property rights to the same extent as federal and state laws in the United States. Further, licensing partners may not prosecute patents in certain jurisdictions in which we may obtain commercial rights, thereby precluding the possibility of later obtaining patent protection in these countries. Consequently, we may not be able to prevent third parties from practicing our inventions in all countries outside the United States, or from selling or importing products made using our inventions in and into the United States or other jurisdictions. Competitors may use our technologies in jurisdictions where we have not obtained patent protection to develop their own products and may also export infringing products to

territories where we have patent protection, but enforcement is not as strong as that in the United States. These products may compete with our products, and our patents or other intellectual property rights may not be effective or sufficient to prevent them from competing.

Many companies have encountered significant problems in protecting and defending intellectual property rights in foreign jurisdictions. The legal systems of certain countries, particularly certain developing countries, do not favor the enforcement of patents, trade secrets and other intellectual property protection, particularly those relating to biotechnology products, which could make it difficult for us to stop the infringement of our patents or marketing of competing products in violation of our proprietary rights generally. Proceedings to enforce our patent rights in foreign jurisdictions, whether or not successful, could result in substantial costs and divert our efforts and attention from other aspects of our business, could put our patents at risk of being invalidated or interpreted narrowly and our patent applications at risk of not issuing, and could provoke third parties to assert claims against us. We may not prevail in any lawsuits that we initiate and the damages or other remedies awarded, if any, may not be commercially meaningful. Accordingly, our efforts to enforce our intellectual property rights around the world may be inadequate to obtain a significant commercial advantage from the intellectual property that we develop or license.

Risks Related to Government and Regulation

Even if one or more of our product candidates obtains regulatory approval, we will be subject to ongoing obligations and continued regulatory requirements, which may result in significant additional expense.

If regulatory approval is obtained for any of our product candidates, the product will remain subject to continual regulatory review. Any regulatory approvals that we receive for our product candidates may be subject to limitations on the approved indicated uses for which the product may be marketed or to the conditions of approval, or contain requirements for potentially costly post ‑marketing testing, including Phase 4 clinical trials and surveillance to monitor the safety and efficacy of the product candidate. In addition, if the FDA, the EMA or any comparable foreign regulatory authority approves any of our product candidates, we will be subject to ongoing regulatory obligations and oversight by regulatory authorities, including with respect to the manufacturing processes, labeling, packing, distribution, adverse event reporting, storage, advertising and marketing restrictions, and recordkeeping and, potentially, other post ‑marketing obligations, all of which may result in significant expense and limit our ability to commercialize such products. These requirements include submissions of safety and other post ‑marketing information and reports, registration, as well as continued compliance with cGMPs and cGCPs for any clinical trials that we conduct post ‑regulatory approval. Because our Phase 3 clinical trial of COR ‑003 will collect safety data for only 90 patients, we currently expect that we would be required by the FDA and the EMA to collect additional safety data post ‑approval.

In addition, approved products, manufacturers and manufacturers’ facilities are subject to continual review and periodic inspections. 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 regulatory requirements, may result in, among other things:

 restrictions on the marketing or manufacturing of the product;

 withdrawal of the product from the market, or voluntary or mandatory product recalls;

 fines, disgorgement of profits or revenues, warning letters or holds on clinical trials;

 refusal by the FDA to approve pending applications or supplements to approved applications filed by us;

 suspension or revocation of product approvals;

 product seizure or detention, or refusal to permit the import or export of products; and

 injunctions or the imposition of civil or criminal penalties.

If any of these events occurs, our ability to sell such product may be impaired, and we may incur substantial additional expense to comply with regulatory requirements. The policies of the FDA, the EMA or any comparable

foreign regulatory agency may change, and additional government 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 lose any regulatory approval that we may have obtained, which would compromise our ability to achieve or sustain profitability.

Although we have obtained o rphan drug designation for our key produc t candidates from the FDA and EMA, orphan drug designation may not ensure that we will enjoy market exclusivity in a particular market, and if we fail to obtain or maintain orphan drug exclusivity for our product candidates, we may be subject to earlier competition and our potential revenue will be reduced.

Under the Orphan Drug Act of 1983, the FDA may designate a product as an orphan drug if it is intended to treat an orphan disease or condition, defined as a patient population of fewer than 200,000 in the United States, or a patient population greater than 200,000 in the United States where there is no reasonable expectation that the cost of developing the drug will be recovered from sales in the United States. In the European Union, the EMA’s Committee for Orphan Medicinal Products grants orphan drug designation to promote the development of products that are intended for the diagnosis, prevention, or treatment of a life ‑threatening or chronically debilitating condition affecting not more than 5 in 10,000 persons in the European Union. Additionally, designation is granted for products intended for the diagnosis, prevention or treatment of a life ‑threatening, seriously debilitating or serious and chronic condition when, without incentives, it is unlikely that sales of the drug in the European Union would be sufficient to justify the necessary investment in developing the drug or biological product or where there is no satisfactory method of diagnosis, prevention or treatment, or, if such a method exists, the medicine must be of significant benefit to those affected by the condition.

In the United States, orphan drug designation entitles a party to financial incentives, such as opportunities for grant funding towards clinical trial costs, tax advantages and user ‑fee waivers. In addition, if a product receives the first FDA approval for the indication for which it has orphan drug designation, the product is entitled to orphan drug exclusivity, which means the FDA may not approve any other application to market the same drug for the same indication for a period of seven years, except in limited circumstances, such as a showing of clinical superiority over the product with orphan exclusivity or where the manufacturer is unable to assure sufficient product quantity. In the European Union, orphan drug designation entitles a party to financial incentives such as a reduction of fees or fee waivers and ten years of market exclusivity following drug or biological product approval. This period may be reduced to six years if the orphan drug designation criteria are no longer met, including where it is shown that the product is sufficiently profitable not to justify maintenance of market exclusivity.

COR ‑003 has been granted orphan drug designation for the treatment of endogenous Cushing’s syndrome in the United States and Europe. COR ‑005 has been granted orphan drug designation for the treatment of acromegaly in the United States and in Europe. Even though we have obtained orphan drug designation for our key product candidates , we may not be the first to obtain regulatory approval for any particular orphan indication due to the uncertainties associated with developing biopharmaceutical products. For example, ketoconazole was granted orphan drug exclusivity in Europe and is now being marketed for the treatment of endogenous Cushing’s syndrome.  Therefore, COR-003 will need to show significant benefit compared to ketoconazole in order to be marketed in Europe prior to the expiration of the ketoconazole orphan drug exclusivity.     Further, even though we have obtain ed orphan drug designation for our key product candidate s , that exclusivity may not effectively protect the product from competition because different drugs with different active moieties can be approved for the same condition. Orphan drug designation neither shortens the development time or regulatory review time of a drug nor gives the drug any advantage in the regulatory review or approval process.

Enacted and future legislation may increase the difficulty and cost for us to obtain regulatory approval of and commercialize our product candidates, and may affect the prices we may set.

In the United States and the European Union, there have been a number of legislative, regulatory and proposed changes regarding the healthcare system. These changes could prevent or delay regulatory approval of our product candidates, restrict or regulate post ‑approval activities, and affect our ability to sell profitably any products for which we obtain regulatory approval and begin to commercialize.

As a result of legislative proposals and the trend toward managed health care in the United States, third ‑party payors are increasingly attempting to contain healthcare costs by limiting both coverage and the level of reimbursement of new drugs. In the United States, the Medicare Modernization Act changed the way Medicare covers and pays for pharmaceutical products. The legislation expanded Medicare coverage for drug purchases by the elderly under a new Part D and introduced a new reimbursement methodology based on average sale prices for physician ‑administered drugs. In addition, this legislation provided authority for limiting the number of drugs that will be covered in any therapeutic class. Cost ‑reduction initiatives and other provisions of this legislation could decrease the coverage and reimbursement that we receive for any approved products. While the Medicare Modernization Act applies only to drug benefits for Medicare beneficiaries, private payors often follow the Medicare coverage policy and payment limitations in setting their own reimbursement rates. Therefore, any reduction in reimbursement that results from the Medicare Modernization Act may result in a similar reduction in payments from private payors.

In March 2010, President Obama signed into law the Patient Protection and Affordable Care Act, as amended by the Health Care and Education Reconciliation Act, or collectively, PPACA, a sweeping law intended, among other things, to broaden access to health insurance, reduce or constrain the growth of healthcare spending, enhance remedies against fraud and abuse, add new transparency requirements for health care and health insurance industries, impose new taxes and fees on the health industry, and impose additional health policy reforms. PPACA, among other things: increased the statutory minimum Medicaid rebates a manufacturer must pay under the Medicaid Drug Rebate Program; addressed a new methodology by which rebates owed by manufacturers under the Medicaid Drug Rebate Program are calculated for drugs that are inhaled, infused, instilled, implanted or injected; and established a new Medicare Part D coverage gap discount program in which manufacturers must provide 50% point ‑of ‑sale discounts on negotiated prices of applicable brand drugs to eligible beneficiaries during their coverage gap period as a condition for the manufacturer’s outpatient drugs to be covered under Part D and implemented payment system reforms, including a national pilot program on payment bundling to encourage hospitals, physicians and other providers to improve the coordination, quality and efficiency of certain healthcare services through bundled payment models. Further, the PPACA imposed a significant annual nondeductible fee on entities that manufacture or import specified branded prescription drug products and biologic agents, apportioned among these entities according to their market share in certain government healthcare programs. We expect that additional healthcare reform measures will likely be adopted in the future, any of which may increase our regulatory burdens and operating costs and limit the amounts that federal, state and foreign governments will reimburse for healthcare products and services, which could result in reduced demand for our products, if approved, or additional pricing pressures.

Moreover, other legislative changes have also been proposed and adopted in the United States since PPACA was enacted. On August 2, 2011, the Budget Control Act of 2011, among other things, created measures for spending reductions by Congress. A Joint Select Committee on Deficit Reduction tasked with recommending a targeted deficit reduction of at least $1.2 trillion for the years 2013 through 2021 was unable to reach required goals, thereby triggering the legislation’s automatic reduction to several government programs. This includes aggregate reductions to Medicare payments to providers of up to 2% per fiscal year, which went into effect on April 1, 2013 and will stay in effect through 2024 unless additional Congressional action is taken. On January 2, 2013, President Obama signed into law the American Taxpayer Relief Act of 2012, which, among other things, 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. These new laws may result in additional reductions in Medicare and other health care funding, which could compromise the ability of patients and third ‑party payors to purchase our product candidates.

In the European Union, proposed new clinical trial regulations will centralize clinical trial approval, which eliminates redundancy, but in some cases this may extend timelines for clinical trial approvals due to potentially longer wait times. Proposals to require specific consents for use of data in research, among other measures, may increase the costs and timelines for our product development efforts. Austerity measures in certain European nations may also affect the prices we are able to seek if our products are approved, as discussed below.

Both in the United States and in the European Union, legislative and regulatory proposals have been made to expand post ‑approval requirements and restrict sales and promotional activities for pharmaceutical products. We do not

know whether additional legislative changes will be enacted, whether the regulations, guidance or interpretations will be changed, or what the impact of such changes on the regulatory approvals of our product candidates, if any, may be.

Our relationships with customers, consultants and payors will be subject to applicable fraud and abuse, privacy and security, transparency and other healthcare laws and regulations, which, if violated, could expose us to criminal sanctions, civil penalties, exclusion from government healthcare programs, contractual damages, reputational harm and diminished profits and future earnings.

Healthcare providers, physicians and others play a primary role in the recommendation and prescription of any products for which we may in the future obtain regulatory approval and commercialize. Our current and future arrangements with third ‑party payors, consultants, customers, physicians and others may expose us to broadly applicable fraud and abuse and other healthcare federal and state laws and regulations, including in the United States, that may constrain the business or financial arrangements and relationships through which we market, sell and distribute our products for which we obtain regulatory approval. Potentially applicable healthcare laws and regulations include, but are not limited to, the following:

 the U.S. federal Anti ‑Kickback Statute, which prohibits, among other things, persons or entities from knowingly and willfully soliciting, offering, receiving or paying remuneration, directly or indirectly, overtly or covertly, in cash or in kind, to induce or in return for, purchasing, leasing, ordering, arranging for, or recommending the purchase, lease, or order of, any good, facility, item or service for which payment may be made under U.S. government healthcare programs such as Medicare and Medicaid;

 the federal civil and criminal false claims laws and civil monetary penalties laws, including civil whistleblower or qui tam actions, which prohibit, among other things, any person or entity from knowingly presenting, or causing to be presented, a false or fraudulent claim for payment or approval to the federal government or knowingly making, using or causing to be made or used a false record or statement material to a false or fraudulent claim to the federal government, or knowingly concealing or knowingly and improperly avoiding or decreasing an obligation to pay or transmit money or property to the federal government;

 though we are not currently regulated under the Privacy Rule or the Security Rule of the Health Insurance Portability and Accountability Act of 1996, or HIPAA, as amended by the Health Information Technology for Economic and Clinical Health Act, or HITECH, and its implementing regulations, which impose various obligations with respect to safeguarding the privacy, security and transmission of individually identifiable health information, it may implicate certain aspects of our business relationships;

 the health care fraud provisions of HIPAA, which impose criminal liability for, among other things, knowingly and willfully executing, or attempting to execute, a scheme to defraud any healthcare benefit program, including private third ‑party payors, or to obtain, by means of false or fraudulent pretenses, representations or promises, any of the money or property owned by, or under the custody or control of, any healthcare benefit program, and knowingly and willfully falsifying, concealing or covering up a material fact or making any materially false, fictitious or fraudulent statement in connection with the delivery of, or payment for, healthcare benefits, items or services;

 the federal Physician Payments Sunshine Act under PPACA and its implementing regulations, which requires certain manufacturers of drugs, devices, biologics and medical supplies to annually report to the Centers for Medicare & Medicaid Services information related to payments and other transfers of value made by such manufacturers to physicians and teaching hospitals, and ownership and investment interests held by physicians or their immediate family members; and

 analogous laws and regulations, such as state anti ‑kickback and false claims laws, which may apply to sales or marketing arrangements, research, distribution and claims involving healthcare items or services reimbursed by state governmental and non ‑governmental third ‑party payors, including private insurers, state laws that require pharmaceutical companies to comply with the pharmaceutical industry’s voluntary compliance guidelines and the relevant compliance guidance promulgated by the federal government, and

state requirements for manufacturers to report information related to payments to physicians and other health care providers or marketing expenditures and other restrictions on drug manufacturer marketing practices.

Because of the breadth of these laws and the narrowness of the statutory exceptions and safe harbors available under the U.S. federal Anti ‑Kickback Statute and analogous state laws, it is possible that some of our current and future business activities could be subject to challenge under one or more of such laws. In addition, recent health care reform legislation has strengthened these laws. For example, PPACA, among other things, amends the intent requirement of the U.S. federal Anti ‑Kickback Statute and criminal healthcare fraud statutes. A person or entity no longer needs to have actual knowledge of these statutes or specific intent to violate them in order to be in violation. Moreover, PPACA provides that the government may assert that a claim including items or services resulting from a violation of the U.S. federal Anti ‑Kickback Statute constitutes a false or fraudulent claim for purposes of the federal False Claims Act.

Efforts to ensure that our business arrangements with third parties will comply with applicable healthcare laws and regulations will involve substantial costs. It is possible that governmental authorities will conclude that our business practices may not comply with current or future statutes, regulations, agency guidance or case law involving applicable healthcare laws and regulations. If our operations are found to be in violation of any of these laws or any other governmental regulations that may apply to us, we may be subject to, without limitation, significant civil, criminal and administrative penalties, damages, fines, exclusion from U.S. government funded healthcare programs, such as Medicare and Medicaid, imprisonment, disgorgement, enhanced government reporting and oversight, contractual damages, reputational harm, diminished profits and future earnings and/or the curtailment or restructuring of our operations. Any action against us for violation of these laws, even if we successfully defend against it, could cause us to incur significant legal expenses or divert our management’s attention from the operations of our business. If any of the physicians or other providers or entities with whom we expect to do business are found to be not in compliance with applicable laws, they may be subject to similar penalties, including, without limitation, criminal, civil or administrative sanctions, including exclusions from government ‑funded healthcare programs.

We are subject to U.S. and certain foreign export and import controls, sanctions, embargoes, anti ‑corruption laws and anti ‑money laundering laws and regulations. Compliance with these legal standards could impair our ability to compete in domestic and international markets. We can face criminal liability and other serious consequences for violations which can harm our business.

We are subject to export control and import laws and regulations, including the U.S. Export Administration Regulations, U.S. Customs regulations, various economic and trade sanctions regulations administered by the U.S. Treasury Department’s Office of Foreign Assets Controls, the U.S. Foreign Corrupt Practices Act of 1977, as amended, the U.S. domestic bribery statute contained in 18 U.S.C. § 201, the U.S. Travel Act, the USA PATRIOT Act and other state and national anti ‑bribery and anti ‑money laundering laws in the countries in which we conduct activities. Anti ‑corruption laws are interpreted broadly and prohibit companies and their employees, agents, contractors and other partners from authorizing, promising, offering, or providing, directly or indirectly, improper payments or anything else of value to recipients in the public or private sector. We may engage third parties for clinical trials outside of the United States, to sell our products abroad once we enter a commercialization phase and/or to obtain necessary permits, licenses, patent registrations and other regulatory approvals. We have direct or indirect interactions with officials and employees of government agencies or government ‑affiliated hospitals, universities and other organizations. We can be held liable for the corrupt or other illegal activities of our employees, agents, contractors and other partners, even if we do not explicitly authorize or have actual knowledge of such activities. Any violations of the laws and regulations described above may result in substantial civil and criminal fines and penalties, imprisonment, the loss of export or import privileges, debarment, tax reassessments, breach of contract and fraud litigation, reputational harm and other consequences.

Risks Related to Our Ordinary Shares

The price of our ordinary shares may be volatile and may fluctuate due to factors beyond our control.

The market price of our ordinary shares may be volatile and subject to wide fluctuations in response to a variety of factors, many of which are beyond our control, including:

 positive or negative results of testing and clinical trials by us, strategic partners or competitors;

 delays in in ‑licensing or acquiring additional complementary product candidates;

 any delay in the commencement, enrollment and the ultimate completion of clinical trials;

 technological innovations or commercial product introductions by us or competitors;

 failure to successfully develop and commercialize any of our product candidates, if approved;

 changes in government regulations;

 developments concerning proprietary rights, including patents and litigation matters;

 public concern relating to the commercial value or safety of any of our product candidates;

 financing or other corporate transactions, or inability to obtain additional funding;

 failure to meet or exceed expectations of the investment community;

 announcements of significant licenses, acquisitions, strategic partnerships or joint ventures by us or our competitors;

 publication of research reports or comments by securities or industry analysts; or

 general market conditions in the pharmaceutical industry or in the economy as a whole.

The share price of publicly traded emerging biopharmaceutical and drug discovery and development companies has been highly volatile and is likely to remain highly volatile in the future. In addition, the stock market in general has experienced extreme price and volume fluctuations that have often been unrelated or disproportionate to the operating performance of individual companies. Broad market and industry factors may hurt the market price of companies’ stock, including ours, regardless of actual operating performance.

An active market in our ordinary shares may not develop or be liquid enough for investors to resell our ordinary shares.

Prior to our initial public offering in October 2015, there was no U.S. public market for our ordinary shares.  The listing of our common stock on the NASDAQ Global Select Market does not assure that a meaningful, consistent and liquid trading market exists.  Although our ordinary shares are listed on the NASDAQ Global Select Market, trading volume in our ordinary shares has been limited and an active trading market for our shares may never develop or be sustained.  If an active market for our ordinary shares does not develop, it may be difficult for investors to sell their shares without depressing the market price for the shares or at all.

Future sales, or the possibility of future sales, of a substantial number of our ordinary shares could adversely affect the price of our ordinary shares.

Future sales of a substantial number of our ordinary shares, or the perception that such sales will occur, could cause a decline in the market price of our ordinary shares. We currently have 21,205,382 ordinary shares outstanding. A significant portion of these ordinary shares are subject to lock ‑up agreements executed in connection with our initial public offering of ordinary shares in October 2015. These lock-up agreements expire in April 2016.  If, after the end of

such lock ‑up agreements, these shareholders sell substantial amounts of ordinary shares in the public market, or the market perceives that such sales may occur, the market price of our ordinary shares and our ability t o raise capital through an issuance of equity securities in the futur e could be adversely affected. We also intend to register all ordinary shares that we may issue under our equity compensation plan s . Once we register these ordinary shares, they can be freely sold in the public market upon issuance, subject to volume limitations applicable to affiliates and the lock ‑up agreements . If a large number of our ordinary shares or securities convertible into our ordinary shares are sold in the public market after they become eligible for sale, the sales could reduce the trading price of our ordinary shares and impede our ab ility to raise future capital.

We expect to be classified a passive foreign investment company for U.S. federal income tax purposes, which could result in adverse U.S. federal income tax consequences to U.S. H olders of our ordinary shares.

A non ‑U.S. corporation generally will be classified as a passive foreign investment company, or PFIC, for U.S. federal income tax purposes for any taxable year if either (1) 75% or more of its gross income for such year consists of certain types of “passive” income or (2) 50% or more of the value of its assets (determined on the basis of a quarterly average) during such year produce or are held for the production of passive income. For this purpose, “passive income” generally includes, among other items of income, dividends, interest, royalties, rents and gains from commodities and securities transactions and from the sale or exchange of property that gives rise to passive income, and a non ‑U.S. corporation is treated as owning a proportionate share of the assets and earning a proportionate share of the income of any other corporation in which such non ‑U.S. corporation owns, directly or indirectly, more than 25% of the value of such other corporation’s stock. Based on our projected income, assets and activities, we expect that we will be treated as a PFIC for the current taxable year and for the foreseeable future. Accordingly, a U.S. Holder, would be subject to substantially increased U.S. federal income tax liability, including upon the receipt of any “excess distributions” from us and upon the sale or other disposition of our ordinary shares. Although certain elections may be available to mitigate the adverse impact of the PFIC rules, such elections may result in a current U.S. federal tax liability prior to any distribution on or disposition of our ordinary shares. Further, there can be no assurances that we will supply U.S. Holders with information that such U.S. Holders are required to report under the rules governing such elections. Accordingly, the acquisition of our ordinary shares may not be an appropriate investment for certain holders that are not tax ‑exempt organizations. U.S. Holders should consult their tax advisers regarding the application of the PFIC rules to an investment in our ordinary shares.

If securities or industry analysts do not publish research, or publish inaccurate or unfavorable research, about our business, the price of our ordinary shares and our trading volume could decline.

The trading market for our ordinary shares will depend in part on the research and reports that securities or industry analysts publish about us or our business. If no or too few securities or industry analysts commence or continue coverage of our company, the trading price for our ordinary shares would likely be negatively affected. In the event securities or industry analysts initiate coverage, if one or more of the analysts who cover us downgrade our ordinary shares or publish inaccurate or unfavorable research about our business, the price of our ordinary shares would likely decline. If one or more of these analysts cease coverage of our company or fail to publish reports on us regularly, demand for our ordinary shares could decrease, which might cause the price of our ordinary shares and trading volume to decline.

We have never paid cash dividends, do not expect to pay dividends in the foreseeable future and our ability to pay dividends, or repurchase or redeem our ordinary shares, is limited by law.

We have not paid any dividends since our inception and do not anticipate paying any dividends on our ordinary shares in the foreseeable future. Even if future operations lead to significant levels of distributable profits, we currently intend that any earnings will be reinvested in our business and that dividends will not be paid until we have an established revenue stream to support continuing dividends. The proposal to pay future dividends to shareholders will in addition effectively be at the sole discretion of our board of directors after taking into account various factors our board of directors deems relevant, including our business prospects, capital requirements, financial performance and new product development. In addition, payment of future dividends is subject to certain limitations under the Irish Companies Act 2014, or the Irish Companies Act. The Irish Companies Act, among other requirements, require Irish companies to

have distributable reserves available for distribution equal to or greater than the amount of the proposed dividend. See Part I, Item 10A “ Additional Information-Share Capital .” Accordingly, investors cannot rely on dividend income from our ordinary shares and any returns on an investment in our ordinary shares will likely depend entirely upon any future appreciation in the price of our ordinary shares.

We are a foreign private issuer and, as a result, we are not subject to U.S. proxy rules and are subject to Exchange Act reporting obligations that, to some extent, are more lenient and less frequent than those of a U.S. domestic public company.

We report under the Securities Exchange Act of 1934, as amended, or the Exchange Act, as a non ‑U.S. company with foreign private issuer status. Because we qualify as a foreign private issuer under the Exchange Act and although we are subject to Irish laws and regulations with regard to such matters and intend to furnish quarterly financial information to the Securities and Exchange Commission, we are exempt from certain provisions of the Exchange Act that are applicable to U.S. domestic public companies, including: (1) the sections of the Exchange Act regulating the solicitation of proxies, consents or authorizations with respect to a security registered under the Exchange Act; (2) the sections of the Exchange Act requiring insiders to file public reports of their stock ownership and trading activities and liability for insiders who profit from trades made in a short period of time; and (3) the rules under the Exchange Act requiring the filing with the SEC of quarterly reports on Form 10 ‑Q containing unaudited financial and other specified information, or current reports on Form 8 ‑K upon the occurrence of specified significant events. In addition, foreign private issuers are not required to file their annual report on Form 20 ‑F until four months after the end of each financial year, while U.S. domestic issuers that are accelerated filers are required to file their annual report on Form 10 ‑K within 75 days after the end of each fiscal year. Foreign private issuers are also exempt from the Regulation Fair Disclosure, aimed at preventing issuers from making selective disclosures of material information. As a result of the above, you may not have the same protections afforded to shareholders of companies that are not foreign private issuers.

As a foreign private issuer and as permitted by the listing requirements of NASDAQ, we rely on certain home country governance practices rather than the corporate governance requirements of NASDAQ.

We are a foreign private issuer. As a result, in accordance with NASDAQ Listing Rule 5615(a)(3), we comply with home country governance requirements and certain exemptions thereunder rather than complying with certain of the corporate governance requirements of NASDAQ.

Irish law does not require that a majority of our board of directors consist of independent directors. Our board of directors therefore may include fewer independent directors than would be required if we were subject to NASDAQ Listing Rule 5605(b)(1). In addition, we are not subject to NASDAQ Listing Rule 5605(b)(2), which requires that independent directors must regularly have scheduled meetings at which only independent directors are present.

Our articles of association (hereinafter referred to as our Articles) provide that at any meeting of shareholders, a shareholder may designate another person to attend, speak and vote at the meeting on their behalf by proxy, but no such proxy shall be voted or acted upon at any subsequent meeting, unless the proxy expressly provides for this. Irish law does not require shareholder approval for the issuance of securities in connection with the establishment of or amendments to equity ‑based compensation plans for employees. To this extent, our practice varies from the requirements of NASDAQ Listing Rule 5635, which generally requires an issuer to obtain shareholder approval for the issuance of securities in connection with such events.

See Part I, Item 10B “Additional Information-Memorandum and Articles of Association.”  As a result of the above, you may not have the same protections afforded to shareholders of companies that are not foreign private issuers.

We may lose our foreign private issuer status, which would then require us to comply with the Exchange Act’s domestic reporting regime and cause us to incur significant legal, accounting and other expenses.

We are a foreign private issuer and therefore we are not required to comply with all of the periodic disclosure and current reporting requirements of the Exchange Act applicable to U.S. domestic issuers. Losing our status as a foreign private issuer would require us to comply with all of the periodic disclosure and current reporting requirements

of the Exchange Act applicable to U.S. domestic issuers. In order to maintain our current status as a foreign private issuer, either (1) a majority of our ordinary shares must be either directly or indirectly owned of record by non ‑residents of the United States or (2)(A) a majority of our executive officers or directors may not be United States citizens or residents, (B) more than 50% of our assets cannot be located in the United States and (C) our business must be administered principally outside the United States. If we lost this status, we would be required to comply with the Exchange Act reporting and other requirements applicable to U.S. domestic issuers, which are more detailed and extensive than the requirements for foreign private issuers. We may also be required to make changes in our corporate governance practices in accordance with various SEC and stock exchange rules. The regulatory and compliance costs to us under U.S. securities laws if we are required to comply with the reporting requirements applicable to a U.S. domestic issuer may be significantly higher than the cost we would incur as a foreign private issuer. As a result, we expect that a loss of foreign private issuer status would increase our legal and financial compliance costs and would make some activities highly time consuming and costly. We also expect that if we were required to comply with the rules and regulations applicable to U.S. domestic issuers, it would make it more difficult and expensive for us to obtain director and officer liability insurance, and we may be required to accept reduced coverage or incur substantially higher costs to obtain coverage. These rules and regulations could also make it more difficult for us to attract and retain qualified members of our board of directors.

Our shareholder ’s rights are governed by Irish law and differ from the rights of shareholders under U.S. law.

We are a public limited company incorporated under the laws of Ireland. Therefore, the rights of holders of ordinary shares are governed by Irish law and b y our memorandum and articles of association . These rights differ from the typical rights of shareholders in U.S. corporations. In certain cases, facts that, under U.S. law, would entitle a shareholder in a U.S. corporation to claim damages may not give rise to a cause of action under Irish law entitling a shareholder in an Irish company to claim damages. For example, the rights of shareholders to bring proceedings against us or against our directors or officers in relation to public statements are more limited under Irish law than under the civil liability provisions of the U.S. securities laws.

Our shareholders may have difficulties enforcing, in actions brought in courts in jurisdictions located outside the United States, judgments obtained in the U.S. courts under the U.S. securities laws. In particular, if a shareholder sought to bring proceedings in Ireland based on U.S. securities laws, the Irish court might consider that:

 it did not have jurisdiction;

 it was not the appropriate forum for such proceedings;

 applying Irish conflict of laws rules, U.S. laws (including U.S. securities laws) did not apply to the relationship between you and us or our directors and officers; or

 the U.S. securities laws were of a penal nature or violated Irish public policy and should not be enforced by the Irish court.

Our shareholders should also be aware that Irish law does not allow for any form of legal proceedings directly equivalent to the class action available in the United States.

T o the extent our financial statements will be audited by a registered public accounting firm in Ireland, because the PCAOB is not currently permitted to inspect registered public accounting firms in the Republic of Ireland, including our independent registered public accounting firm, you may not benefit from such inspections.

Auditors of U.S. public companies, including our independent registered public accounting firm, are required by the laws of the United States to undergo periodic PCAOB inspections to assess their compliance with U.S. law and professional standards in connection with performance of audits of financial statements filed with the SEC. The laws of certain European Union countries, including the Republic of Ireland, do not currently permit the PCAOB to conduct inspections of accounting firms established and operating in such European Union countries. Accordingly, to the extent our financial statements will be audited by a registered public accounting firm in Ireland, the PCAOB would be prevented from fully evaluating the effectiveness of our independent registered public accounting firm’s audit procedures

or quality control procedures. Unlike shareholders or potential shareholders of most U.S. public companies, our shareholders would be deprived of the possible benefits of such PCAOB inspections.

A future transfer of our ordinary shares, other than one effected by means of the transfer of book ‑entry interests in DTC, may be subject to Irish stamp duty.

The rate of stamp duty, when applicable, on the transfer of shares in an Irish ‑incorporated company is 1% of the price paid, or the market value of the shares acquired, whichever is greater. Payment of Irish stamp duty is generally a legal obligation of the transferee. We expect that most of our ordinary shares will be traded through the Depositary Trust Company, or DTC, or through brokers who hold such shares on behalf of customers through DTC. As such, the transfer of ordinary shares should be exempt from Irish stamp duty based on established practice of the Irish Revenue Commissioners. We received written confirmation from the Irish Revenue Commissioners on June 22, 2015 that a transfer of our ordinary shares held through DTC and transferred by means of a book ‑entry interest would be exempt from Irish stamp duty. However, if you hold your ordinary shares directly of record, rather than beneficially through DTC, or through a broker that holds your ordinary shares through DTC, any transfer of your ordinary shares may be subject to Irish stamp duty. The potential for stamp duty to arise could adversely affect the price and liquidity of our ordinary shares. In addition, the terms of our eligibility agreement with DTC will require us to provide certain indemnities relating to Irish stamp duty to third parties. If liability were to arise as a result of the indemnities provided under the terms of the eligibility agreement, we may face significant unexpected costs.

The process to acquire full ownership of Cortendo AB is lengthy and may cause us to incur unanticipated costs. Any delay in our acquiring full ownership of Cortendo AB could result in increased administrative costs and burdens and could adversely affect our day ‑to ‑day operations.

As the holder of more than 90% of Cortendo AB’s shares following the settlement of the Exchange Offer, we will pursue a squeeze ‑out process permitted under Swedish law, which will allow us to acquire the remaining shares of Cortendo AB that were not exchanged as part of the Exchange Offer. This process and any delays may cause us to incur unexpected costs or result in unanticipated structuring or tax costs. Further, the act of redomiciling may impair our ability to utilize our NOLs.  This process will be conducted by arbitration proceedings. The final arbitration award in which the squeeze ‑out price is determined will likely not be rendered until 12 to 18 months or more from initiation of the proceedings. We will have the possibility to request advance title to the remaining Cortendo AB shares before such time, which normally can be obtained within six to nine months from initiation of the proceedings, provided that we provide sufficient security for the final squeeze ‑out price and interest thereon. In such case, we would receive title to such shares and would also be required to pay a preliminary per ‑share squeeze ‑out price for the remaining Cortendo AB shares that corresponds to the value of the per ‑share Exchange Offer consideration, together with interest thereon. Until advance title is granted, Cortendo AB shareholders who did not participate in the Exchange Offer will hold a minority interest in Cortendo AB. After advance title has been granted, the former Cortendo AB shareholders will merely have a claim for the final squeeze ‑out price, reduced by the preliminary amount we paid in connection with the advance title.

The existence of minority shareholders in Cortendo AB may, among other things, make it more difficult or delay our ability to implement changes to our legal structure and interfere with our day ‑to ‑day business operations and corporate governance. For example, intra ‑group transfers of entities and transactions between us and our subsidiaries and affiliates, or among our subsidiaries and affiliates, will need to be carried out on market terms and on an arm’s ‑length basis, which may impair the efficiency of our day ‑to ‑day operations. As a matter of Swedish law, minority Cortendo AB shareholders will also have the ability to request special investigations, convene general meetings of shareholders and propose agenda items for our annual general meetings. Each of these circumstances, along with other measures we may need to take to recognize the continuing legal rights of the remaining minority Cortendo AB shareholders, may result in increased costs and administrative burden.

In addition, holders of Cortendo AB shares who have chosen not to exchange their shares pursuant to the Exchange Offer will have a pro rata claim upon any dividends or other distributions payable by Cortendo AB and will be entitled to receive a proportionate share of any dividend payments or other distributions made by Cortendo AB, consequently reducing the amount of any dividend payments or other distributions that we might make to holders of our shares.

We expect to expend cash in connection with the squeeze ‑out proceedings.

The actual price per share purchased pursuant to the Swedish squeeze ‑out proceedings will be determined by the arbitration tribunal. As a result of the squeeze ‑out proceedings, we may ultimately have to pay, in the aggregate, a higher price per share in order to purchase the remaining 78,621 Cortendo AB shares that are outstanding following the completion of the Exchange Offer. Such price will also under Swedish law have to be paid in cash, which will have an impact on our liquidity and cash reserves, and therefore may have an adverse effect on our financial and operational flexibility.

Anti ‑takeover provisions in our Articles and under Irish law could make an acquisition of us more difficult, limit attempts by our shareholders to replace or remove our current directors and management team, and limit the market price of our ordinary shares.

Our Articles contain provisions that may delay or prevent a change of control, discourage bids at a premium over the market price of our ordinary shares and adversely affect the market price of our ordinary shares and the voting and other rights of the holders of our ordinary shares. These provisions include:

 dividing our board of directors into three classes, with each class serving a staggered three ‑year term;

 permitting our board of directors to issue preference shares without shareholder approval, with such rights, preferences and privileges as they may designate;

 provisions which allow our board of directors to adopt a shareholder rights plan upon such terms and conditions as it deems expedient and in our best interests;

 establishing an advance notice procedure for shareholder proposals to be brought before an annual meeting, including proposed nominations of persons for election to our board of directors; and

 the ability of our board of directors to fill vacancies on our board in certain circumstances.

These provisions do not make us immune from takeovers. However, these provisions will apply even if the offer may be considered beneficial by some shareholders. In addition, these provisions may frustrate or prevent any attempts by our shareholders to replace or remove our current management team by making it more difficult for shareholders to replace members of our board of directors, which is responsible for appointing the members of our management.

Irish law differs from the laws in effect in the United States with respect to defending unwanted takeover proposals and may give our board of directors less ability to control negotiations with hostile offerors.

We are subject to the Irish Takeover Rules. Under the Irish Takeover Rules, our board of directors is not permitted to take any action that might frustrate an offer for our ordinary shares once our board of directors has received an approach that may lead to an offer or has reason to believe that such an offer is or may be imminent, subject to certain exceptions. Potentially frustrating actions such as (1) the issue of shares, options, restricted share units or convertible securities, (2) material acquisitions or disposals, (3) entering into contracts other than in the ordinary course of business or (4) any action, other than seeking alternative offers, which may result in frustration of an offer, are prohibited during the course of an offer or at any earlier time during which our board of directors has reason to believe an offer is or may be imminent. These provisions may give our board of directors less ability to control negotiations with hostile offerors than would be the case for a corporation inc orporated in the United States.  See Part I, Item 10B “Additional Information-Memorandum and Articles”.

We are an “emerging growth company,” and we cannot be certain if the reduced reporting requirements applicable to “emerging growth companies” will make our ordinary shares less attractive to investors.

We are an “emerging growth company,” as defined in the JOBS Act. For as long as we continue to be an “emerging growth company,” we may take advantage of exemptions from various reporting requirements that are

applicable to other public companies that are not “emerging growth companies,” including not being required to comply with the auditor attestation requirements of Section 404 of the Sarba nes-Oxley Act exemptions from the requirements to provide certain executive compensation disclosures , exemptions from the requirements of holding a nonbinding advisory vote on executive compensation and shareholder approval of any golden parachute payments not previously approved. As an “emerging growth company,” in our i nitial registration statement, we were required to report only two years of financial results and selected financial data compared to three and five years, respectively, for comparable data reported by other public companies. We could be an “emerging growth company” for up to five years, although circumstances could cause us to lose that status earlier, including if the market value of our ordinary shares held by non ‑affiliates exceeds $700 million as of any June 30 before that time, in which case we would no longer be an “emerging growth company” as of the following December 31, our fiscal year end. We cannot predict if investors will find our ordinary shares less attractive because we may rely on these exemptions. If some investors find our ordinary shares less attractive as a result, there may be a less active trading market for our ordinary shares and the price of our ordinary shares may be more volatile.

Our principal executive offices are located at 900 Northbrook Drive, Suite 200, Trevose, Pennsylvania, 19053 and our telephone number is +1 610 ‑254 ‑9200. For the purposes of Irish law, our registered office is Arthur Cox Building, Earlsfort Terrace, Dublin 2, Ireland.

Our website is www.strongbridgebio.com . The information on, or that can be accessed through, our website is not part of and should not be incorporated by reference into this Annual Report on Form 20-F .  

Solely for convenience, the trademarks and trade names in this Annual Report on Form 20-F are referred to without the ® and ™ symbols, but such the absence of references should not be construed as any indicator that their respective owners will not assert, to the fullest extent under applicable law, their rights thereto. The trademarks, trade names and service marks appearing in this Annual Report on Form 20-F are the property of their respective owners.

Implications of Being an “Emerging Growth Company”

We qualify as an “emerging growth company,” as defined in the Jumpstart our Business Startups Act of 2012 or the JOBS Act. An emerging growth company may take advantage of specified reduced reporting and regulatory requirements in contrast to those otherwise applicable generally to public companies. These provisions include:

We may take advantage of these reduced reporting and other regulatory requirements for up to five years or such earlier time that we are no longer an emerging growth company. We would cease to be an emerging growth company if we have more than $1.0 billion in annual revenue, have more than $700 million in market value of our ordinary shares held by non ‑affiliates or issue more than $1.0 billion of non ‑convertible debt over a three ‑year period. In addition, the JOBS Act provides that an emerging growth company may delay adopting new or revised accounting standards until those standards apply to private companies. We have irrevocably elected not to avail ourselves of this delayed adoption of new or revised accounting standards and, therefore, we will be subject to the same new or revised accounting standards as public companies that are not emerging growth companies. If we choose to take advantage of any of these reduced reporting burdens, the information that we provide shareholders may be different than you might get from other public companies.

Implications of Being a Foreign Private Issuer

As a foreign private issuer under the Exchange Act, we are exempted from certain provisions of the Exchange Act that are applicable to U.S. domestic public companies, including:

• the sections of the Exchange Act regulating the solicitation of proxies, consents or authorizations in respect of a security registered under the Exchange Act;

• the sections of the Exchange Act requiring insiders to file public reports of their stock ownership and trading activities and liability for insiders who profit from trades made in a short period of time; and

• the rules under the Exchange Act requiring the filing with the Securities and Exchange Commission of quarterly reports on Form 10 ‑Q containing unaudited financial and other specified information, or current reports on Form 8 ‑K upon the occurrence of specified significant events.

Overview

We are a biopharmaceutical company focused on the development, in ‑licensing, acquisition and eventual commercialization of multiple complementary products and product candidates within franchises that target rare diseases. Our primary focus has been to build our rare endocrine franchise, which includes product candidates for the treatment of endogenous Cushing’s syndrome and acromegaly, two rare diseases with a high unmet need for innovative treatment options. Given the well ‑identified and concentrated prescriber base addressing our target markets, we believe we can use a small, focused sales force to effectively market our products, if approved, in the United States, the European Union and other key global markets. We believe that our ability to execute on this strategy is enhanced by the significant clinical development and commercial experience of key members of our management team. We also intend to identify and in ‑license or acquire products or product candidates that would be complementary to our existing rare endocrine franchise or that would form the basis for new rare disease franchises. We believe this approach will enable us to maximize our commercial potential by further leveraging our existing resources and expertise.

Our rare endocrine franchise includes the following product candidates:

Since the introduction of our new management team beginning in August 2014, we have established a rare disease, franchise ‑based business model focused on expansion through a disciplined in ‑licensing and acquisition strategy. In pursuit of our growth strategy, we have raised over $95   million since December 2014 from leading life

sciences investors, including RA Capital, New Enterprise Associates, Broadfin Capital, HealthCap, Acuta Capital, TVM Capital and Granite Point Capital. Leveraging this capital and our experience in sourcing, selecting, in ‑licensing and acquiring product candidates, we were successful in augmenting our rare endocrine franchise by adding COR ‑005 to our product pipeline. We believe that this clinical product candidate, if successful, will benefit from significant development and commercial synergies with our lead product candidate, COR ‑003, because both Cushing’s syndrome and acromegaly are typically caused by benign pituitary tumors and are mainly treated by pituitary endocrinologists.

In May 2015, we entered into an exclusive license agreement, or the Antisense License Agreement, with Antisense Therapeutics that provided us with development and commercialization rights to Antisense Therapeutics’ product candidate, ATL1103, for endocrinology applications (s pecifically excluding the treatment of any form of cancer and the treatment of any complications of diabetes ) . We refer to this product candidate as COR ‑004. Under the terms of the Antisense License Agreement, we paid Antisense Therapeutics an initial upfront license fee of $3.0 million in cash, and we also invested $2.0 million in Antisense Therapeutics equity. The terms of the Antisense License Agreement provide that we could terminate the Antisense License Agreement upon 90 days’ prior written notice to Antisense Therapeutics if we believe the further development and commercialization of COR ‑004 was no longer feasible d ue to a material change that was beyond our control. If, however, it is determined that we terminate d the Antisense License Agreement for convenience, we would be required to pay Antisense Therapeutics a $2.0 million termination fee.  On March 7 , 2016, we provided a notice to Antisense Therapeutics of our intent to terminate the Antisense License Agreement effective June 7, 2016 because , based on receipt of feedback from regulatory authorities, we believe the further development and commercialization of COR ‑004 is no longer feasible due to material change s that were beyond our control.  We have received a reply from Antisense Therapeutics objecting to our termination notice and to our assertion that the further development and commercialization of COR-004 was no longer feasible due to material changes that were beyond our control.  The reply also requests that the parties appoint an independent expert to resolve this dispute in accordance with the terms of the Antisense License Agreement. 

Our Strategy

Our goal is to transform the lives of patients by building a leading franchise ‑based, commercially oriented biopharmaceutical company addressing rare diseases with significant unmet medical needs. We are focused on developing, in ‑licensing, acquiring and eventually commercializing products and product candidates that target rare diseases across several complementary therapeutic areas.

To achieve our goal, we are pursuing the following strategies:

Our Product Candidate Pipeline

The following table illustrates our product candi dates by stage:

Our Rare Endocrine Franchise

We have two product candidates within our rare endocrine franchise. Our lead product candidate, COR ‑003, is a cortisol synthesis inhibitor and is a single enantiomer of ketoconazole that we are developing for the treatment of endogenous Cushing’s syndrome. In June 2015, we acquired COR ‑005, a novel SSA that has the potential to provide a

new and differentiated treatment option for patients with acromegaly. We believe that these clinical product candidates, if successful, will benefit from significant development and commercial synergies based on the fact that both endogenous Cushing’s syndrome and acromegaly are typically caused by benign pituitary tumors and are mainly treated by pituitary endocrinologists. We believe that we can address the markets for both of these product candidates by targeting the endocrinologists that are focused on the treatment of rare pituitary disorders.

Overview of COR ‑003—Phase 3 Product Candidate for the Treatment of Endogenous Cushing’s Syndrome

           We are developing COR- 003 for the treatment of endogenous Cushing’s syndrome, a rare endocrine disorder characterized by excessive cortisol levels. In endogenous Cushing’s syndrome, elevated circulating cortisol levels give rise to a severe disease with variable clinical symptoms, including weight gain, characteristic changes in fat distribution, diabetes, hypertension, osteoporosis, muscle loss and depression. The active pharmaceutical ingredient in COR 003, levoketoconazole (single enantiomer of ketoconazole, 2S,4R ketoconazole) is a small molecule and exerts its effect by blocking the synthesis of cortisol leading to the reduction and normalization of cortisol levels. COR 003 has been granted orphan drug designation by the FDA and the EMA and is being developed for twice daily oral administration. We are currently conducting SONICS, a pivotal Phase 3 clinical trial for COR 003, and expect to report top-line data from this trial in the first half of 2017.  The activities necessary to be completed in order to prepare and file an application for regulatory approval for COR-003 will be sequenced to ensure that the Company’s cash resources are sufficient to fund planned operations through the receipt of top-line data from the SONICS trial.

Ketoconazole, used off ‑label in the United States, is the most frequently prescribed and efficacious drug therapy for endogenous Cushing’s syndrome. It is used to reduce cortisol levels and ameliorate significant comorbidities. Molecules of ketoconazole occur in two forms, which are mirror images of each other. These mirror image pairs are referred to as enantiomers. Manufactured ketoconazole contains a 1:1 mixture of the two enantiomers, 2R,4S ‑ketoconazole and 2S,4R ‑ketoconazole, and is therefore referred to as a racemic mixture. COR ‑003 is a single ‑enantiomer drug, a pure form of one of the two enantiomers (2S,4R ‑ketoconazole) of racemic ketoconazole. Single ‑enantiomer drugs may offer safety and efficacy advantages because one of the enantiomer versions in the racemic mixture can have safety issues or be less effective in treatment of the disorder or disease. COR ‑003, like ketoconazole, is a cortisol synthesis inhibitor that inhibits the cort isol synthesis pathway at several points. In light of the shared mechanism of action with ketoconazole and the data from Phase 2 clinical trials, which were conducted in diabetes patients, we believe COR ‑003 may have a similar beneficial impact on the reduction of significant comorbidities of endogenous Cushing’s syndrome, including those associated with cardiovascular ‑related mortality risk, such as diabetes, weight, hypertension and elevation in cholesterol. In addition, based on preclinical and clinical results, we believe that COR ‑003 may offer an improved safety profile relative to existing approved drug therapies. As a result, we believe that COR ‑003 has the potential to become the new standard of care for the drug therapy of endogenous Cushing’s syndrome.

Overview of Cushing’s Syndrome

There are two variants of Cushing’s syndrome: exogenous, which is caused by factors outside the body; and endogenous, which is caused by factors within the body. The symptoms for both are the same. The more common form is exogenous Cushing’s syndrome, which is often found in people taking cortisol ‑like medications for long periods of time at high dosages. Cortisol ‑like medications are often used to treat inflammatory disorders such as asthma and rheumatoid arthritis. Unlike the endogenous variant, this type of Cushing’s syndrome is temporary and clinical signs and symptoms subside in part after the patient has finished taking the cortisol ‑like medication.

Endogenous Cushing’s syndrome is a rare endocrine disorder characterized by sustained elevated cortisol levels. Cortisol is a hormone produced in the adrenal gland and is naturally secreted as an end product of the activity of the hypothalamic ‑pituitary ‑adrenal axis, a major part of the endocrine system. Corticotropin ‑releasing ‑hormone, or CRH, is secreted from the hypothalamus and stimulates the secretion and release of adrenocorticotropin, or ACTH, from the pituitary gland, which in turn stimulates cortisol secretion from the adrenal gland. Cortisol itself exerts negative feedback control on both CRH in the hypothalamus and ACTH in the pituitary gland, thereby reducing CRH and ACTH secretion and keeping cortisol levels in a normal range.

The most common form of endogenous Cushing’s syndrome is Cushing’s disease, which is typically caused by a benign pituitary tumor that secretes ACTH. Cushing’s disease represents approximately 70% to 80% of patients with endogenous Cushing’s syndrome. Other less frequent causes of endogenous Cushing’s syndrome include extrapituitary tumors producing ACTH, or ectopic ACTH syndrome. The source of ectopic ACTH secretion is most often small ‑cell carcinoma of the lung or bronchial carcinoid tumors, but can also arise with almost any endocrine tumor from many different organs. In a smaller number of cases, approximately 20%, endogenous Cushing’s syndrome can be ACTH ‑independent, resulting from excess secretion of cortisol by unilateral adrenocortical tumors, either benign or malignant, or by non ‑malignant enlargement of the adrenal glands.

In patients with endogenous Cushing’s syndrome, the normal feedback mechanism of the hypothalamic ‑pituitary ‑adrenal axis for cortisol secretion is disrupted as a result of a tumor secreting ACTH, CRH or cortisol. This causes chronic exposure to high circulating cortisol levels that give rise to the clinical state of Cushing’s syndrome. The most common signs and symptoms include: weight gain, especially in the upper body; rounded face and extra fat on the upper back and above the collarbones; high blood sugar or diabetes; high blood pressure or hypertension; thin bones or osteoporosis; muscle loss and weakness; thin, fragile skin that bruises easily; purple ‑red stretch marks, usually over the abdomen and under the arms; depression and difficulty thinking clearly; too much facial hair in women; irregular or absent menstrual periods and infertility; reduced sex drive; and in children, poor height growth and obesity.

An estimated 25,000 patients in the United States and 40,000 patients in Europe are currently diagnosed with endogenous Cushing’s syndrome. Patients are most commonly adults aged 20 to 50 and five times more women than men are affected. However, endogenous Cushing’s syndrome is believed to be underdiagnosed due to lack of disease recognition by the treating physician, which often leads to a delay in diagnosis of six years on average. Endogenous Cushing’s syndrome patients are believed to have a mortality risk up to five times that of the general population, with cardiovascular disease, venous thrombosis and infections being the primary causes of death.

Current Treatment Landscape and Limitations on Current Treatment Options

Treatment of endogenous Cushing’s syndrome varies depending on the cause of the disease. For patients with Cushing’s disease, a subset representing the majority of patients with endogenous Cushing’s syndrome, initial treatment is almost always the attempted surgical removal of the tumor. In anticipation of surgery and when surgery is not effective or not feasible, drug or radiation therapy, or both, is used to suppress excessive cortisol production and the accompanying clinical symptoms.

A typical approach of drug therapy is to inhibit cortisol biosynthesis through the oral administration of an inhibitor of enzymes of adrenal cortisol synthesis. Ketoconazole is the most widely used drug therapy for endogenous Cushing’s syndrome, but it is not approved for this indication in the United States. The percentage of endogenous Cushing’s syndrome patients who achieve normalized levels of cortisol, assessed by measuring urinary free cortisol, or UFC, with ketoconazole has been reported from retrospective uncontrolled studies to vary between 33% and 100%. Data from one retrospective study of 200 patients in 14 French centers solely treated with ketoconazole off label for active Cushing’s syndrome between 1995 and 2012 showed ketoconazole controlled cortisol secretion in approximately 50% of patients and improved clinical symptoms. Also, beneficial effects on clinical symptoms and signs that drive the morbidity and mortality of endogenous Cushing’s syndrome have been reported, such as the reduction in high blood pressure, improvement of diabetes, and normalization of hypokalemia, or low potassium blood levels. However, a significant proportion of patients treated with ketoconazole experience tolerability issues and, in some cases, hepatotoxicity. As a result of the hepatotoxicity risk, including in patients without existing liver disease, the FDA has issued a black box warning concerning the use of ketoconazole to treat fungal infections, its approved indication. Although the elevations in liver function tests associated with ketoconazole are generally modest in nature, in rare cases, severe hepatotoxicity may occur (one in every 10,000 to 15,000 patients). In extremely rare cases, this adverse reaction may be irreversible and result in death or require liver transplantation. In Europe, ketoconazole was taken off the market for the treatment of fungal infections due to similar safety concerns, but was recently approved for the treatment of endogenous Cushing’s syndrome without any clinical trials based on significant unmet need, well ‑established use in medical practice and documentation in scientific literature.

An alternative approach to treatment is the use of drugs that target pituitary tumors that produce ACTH. This approach is only useful in the subset of patients whose endogenous Cushing’s syndrome is caused by a pituitary tumor, or Cushing’s disease. Among Cushing’s disease patients, the dopamine agonist cabergoline, which is not approved for use in Cushing’s disease, has been shown to achieve normalization of UFC levels in about 30% of patients. The SSA pasireotide, which is marketed as Signifor for the treatment of Cushing’s disease, has shown normalization of UFC levels in 15% of patients at a 600 µg dose and in 26% of patients at a 900 µg dose. Certain SSAs, including Signifor, are known to have undesirable side effects on glucose metabolism. Forty percent of patients with Cushing’s disease treated with Signifor in its Phase 3 clinical trial reported the occurrence of hyperglycemia ‑related adverse events.

Another alternative, Korlym, or mifepristone, works by inhibiting the action of cortisol at the receptor level, but does not lower cortisol levels. As a result of this mechanism of action, it is not possible to monitor response by measuring UFC levels, which is the standard for physicians who treat endogenous Cushing’s syndrome. Korlym has been approved in the United States to control hyperglycemia secondary to hypercortisolism in patients with endogenous Cushing’s syndrome. Korlym is contra ‑indicated in pregnant women and in women with a history of unexplained vaginal bleeding, as its side effects include termination of pregnancy, endometrial thickening and vaginal bleeding.

We believe that efficacy limitations and safety concerns with currently available drug therapies for endogenous Cushing’s syndrome have resulted in a significant unmet medical need among endogenous Cushing’s syndrome patients for alternative drug therapies. In a survey we commissioned in 2014 of 89 U.S. physicians treating patients with Cushing’s syndrome, when asked, “Of your patients on medication to manage cortisol levels, what percentage are well controlled?”, the physicians estimated that only approximately 37% of such patients were well controlled. Thus, we believe that our potential addressable market for COR ‑003 would be the one ‑third of all diagnosed endogenous Cushing’s syndrome patients that at any one point in time are eligible for drug therapy, a figure that represents patients anticipating surgery, for whom surgery or radiation is not feasible, is contraindicated or has been unsuccessful. This unmet need may also be impacted by what we believe to be the current lack of disease awareness among physicians and patients, resulting in a low rate of diagnosis.

Our Solution—COR ‑003

We believe that COR ‑003 has the potential to become the new standard of care for the drug therapy of endogenous Cushing’s syndrome because it may provide a favorable efficacy, safety and tolerability profile compared to current drug therapies, including ketoconazole, the most commonly used drug therapy for the treatment of endogenous Cushing’s syndrome. We believe COR ‑003, based on its similar mechanism of action to that of ketoconazole, may improve UFC levels, in contrast to Korlym, and may have an anti ‑diabetic effect, in contrast to Signifor. In addition, we believe COR ‑003 may have an improved safety profile, compared with that of ketoconazole.

COR ‑003, like ketoconazole, is a cortisol synthesis inhibitor that inhibits the cortisol synthesis pathway at three points. The following graphic illustrates the cortisol synthesis pathway :  

Our preclinical and pharmacokinetic data suggest that COR ‑003 may have an efficacy profile at least as favorable as ketoconazole and may have less risk for impairing liver function:

Previously, COR ‑003 was studied for the treatment of type 2 diabetes. DiObex, our licensee from 2004 to 2008, initiated five clinical trials to investigate the use of COR ‑003 for type 2 diabetes. In December 2005, prior to the initiation of the first clinical trial by DiObex, the FDA placed a clinical hold relating to a safety concern for use of a dosage above 600 mg/day. DiObex modified the clinical trial protocol to limit the highest dose to 600 mg/day, and the clinical hold was lifted by the FDA in February 2006. In a Phase 2 clinical trial of type 2 diabetes patients, COR ‑003 demonstrated a significant dose response in the reduction in mean levels of C ‑reactive protein, or CRP, whereas for ketoconazole, an increase in CRP was found .  Higher levels of CRP indicate the presence of inflammation, including in the liver and the cardiovascular system. Thus, we believe that COR ‑003 may be associated with a decrease in inflammatory processes compared to racemic ketoconazole. COR ‑003, with the same mechanism of action as ketoconazole, may also have, like ketoconazole, beneficial effects on cardiovascular risk factors, which are the leading

cause of mortality for endogenous Cushing’s syndrome, including weight loss, reduction in blood sugar, lowering of cholesterol and reduction in blood pressure.

Clinical and Preclinical Development of COR ‑003

Phase 3 Clinical Trial

We are conducting SONICS, a pivotal Phase 3 clinical trial of COR ‑003 investigating the safety and efficacy of COR ‑003 in subjects with endogenous Cushing’s syndrome , and expect to report top ‑line data from this trial in the first half of 2017. This clinical trial is being conducted pursuant to an IND we filed in April 2013. The activities necessary to be completed in order to prepare and file an application for regulatory approval for COR-003 will be sequenced to ensure that the Company’s cash resources are sufficient to fund planned operations through the receipt of top-line data from the SONICS trial. COR ‑003 is an NCE for which we intend to pursue regulatory approval under the FDA’s 505(b)(2) regulations, referencing the FDA’s conclusions of pr eclinical data, potential for drug interaction , and special populations in the new drug application, or NDA, for ketoconazole. The 505(b)(2) regulatory approval pathway was established to allow companies developing drug products to obtain approval by relying in part on agency conclusions of safety and efficacy from studies that were not conducted by or for the applicant. Because approval can rest in part on data already accepted by the FDA or otherwise available in the public domain, an abbreviated and reduced development program may be required, thus mitigating costs and shortening development time. The FDA has acknowledged that no additional preclinical investigations will be required for COR ‑003. The EMA’s Committee for Medical Products for Human Use, or CHMP, has requested a study of reproductive toxicity that will be completed prior to filing in Europe.

Several elements of the clinical trial design have been informed by the clinical development pathway of currently approved drug therapies in the United States and the European Union. Additionally, we incorporated advice from the CHMP and FDA into the design of the clinical trial. In discussions we had with the FDA, they recommended, but did not require, a control group. We are using an open ‑label, single ‑arm design because in the past the FDA has deemed that the concurrent use of a placebo control as monotherapy is unethical for the treatment of patients with active endogenous Cushing’s syndrome due to the progressive and serious nature of the condition .   In February 2016, however, a Phase 3 clinical trial was registered by another company with the FDA to evaluate their monotherapy product candidate against concurrent use of placebo control. In addition, based on our analysis and feedback from experts whom we have consulted, we concluded that it was not practical to use any approved drug to serve as an active control due to the unsuitable mode of action, route of administration and side effect profile of available approved therapies. Studies lacking an active control group are more likely to be subject to unanticipated variability in study results that can potentially lead to flawed conclusions because they do not allow for discrimination of patient outcomes. As a result, even if we achieve the clinical trial’s endpoints, the FDA or other regulatory authorities could view our study results as potentially biased and may ultimately require that we conduct a randomized, controlled clinical trial of COR ‑003 in order to obtain approval for commercialization.

If we can (1) demonstrate consistent and significant clinical benefit by meeting the primary endpoint of the trial, specifically the responder rate measured as normalization of UFC levels and (2) show consistent improvement of objectively quantifiable biomarkers of endogenous Cushing’s syndrome comorbidities, such as blood glucose, blood lipids, blood pressure and weight, and improvement of other clinical signs and symptoms of endogenous Cushing’s syndrome, we believe this would be regarded by regulators as adequate proof of efficacy in this rare disease with a high unmet medical need.

We are conductin g this clinical trial in up to 9 0 clinical sites in approximately 19 countries, including in the United States, Canada, the European Union and the Middle East. We enrolled our first patient in the clinical trial in August 2014. Our U.S. IND for COR ‑003 for the treatment of endogenous Cushing’s syndrome took effect in May 2013. We plan to recruit 90 patients and collect safety and efficacy data over a treatment period of at least one year. Because our Phase 3 clinical trial will collect safety data for only 90 patients, we currently expect that we would be required by the FDA and the EMA to collect additional safety data post ‑approval. If we are able to confirm a favorable safety profile of COR ‑003 in clinical use, we plan to discuss differentiated safety and tolerability labeling from ketoconazole with regulatory authorities.

Our Phase 3 clinical trial is being conducted, after an appropriate washout period, if required, in three phases:

During the dose titration phase, patients will start at 150 mg twice daily dosing (300 mg total daily dose) and titrate in 150 mg increments up to a maximum 600 mg twice daily dosing (1,200 mg total daily dose). Following the dose titration phase, once the therapeutic dose has been reached, the patient will enter the maintenance phase, during which the dose will be fixed and cannot be changed other than for safety reasons. At the end of the six month maintenance phase, UFC levels will be measured and the responder rate, which is the primary endpoint of the clinical trial, will be determined. Patients who have completed the maintenance phase may enter the exten ded evaluation phase, which we expect will provide additional safety and efficacy data. Throughout the entire clinical trial, various measurements for safety and efficacy will be taken.

Below is a diagram of our clinical trial design:

Clinical Trials in Type 2 Diabetes

Historically, COR ‑003 was studied as a treatment for type 2 diabetes. An IND was filed in 2005 for investigation of the use of COR ‑003 in diabetes. DiObex, our licensee at the time, initiated five clinical trials to investigate the use of COR ‑003 for type 2 diabetes. A total of 159 subjects were dosed in these clinical trials, including 41 healthy subjects during Phase 1 clinical trials, and 118 in patients with type 2 diabetes during Phase 2 clinical trials. Doses of COR ‑003 were administered over the range of 200 mg to 600 mg once a day, or QD, and 400 mg twice a day, or BID, for a single patient for up to 14 days, and 150 mg to 450 mg QD for up to four months.

The pharmacokinetics of COR ‑003 were studied in patients with type 2 diabetes and in normal volunteers in whom the effects of COR ‑003 on the pharmacokinetics of felodipine, a drug used to treat high blood pressure, and atorvastatin (Lipitor), a drug used to lower cholesterol, were evaluated. In the completed Phase 2 clinical trial, dose dependent reductions from baseline in cholesterol levels contained in lipoproteins, in the form of low ‑density

lipoprotein-cholesterol, or LDL-chol, and cholesterol incorporated into high ‑density lipoprotein, or HDL-chol, as well as total cholesterol were observed, but no differences in measures of glycemic control relative to placebo were detected. In 2008, in light of negative safety reports for other diabetes treatments such as Avandia, DiObex made the decision to voluntarily terminate the development of COR ‑003 for the treatment of diabetes due to the perceived high regulatory and commercial hurdles for its approval and use in type 2 diabetes. Thereafter, the IND was closed and DiObex terminated the two ongoing Phase 2 clinical trials.

DiObex conducted the following five clinical trials with COR ‑003 in type 2 diabetes pursuant to an IND filed by them in November 2005:

Phase 2 Clinical Trials

DIO ‑501 Clinical Trial

This clinical trial was a double ‑blind, placebo ‑controlled, parallel ‑group clinical trial conducted in patients aged 18 to 70 with a known diagnosis of type 2 diabetes. A total of 35 patients were treated: 21 with COR ‑003 (10 at 200 mg QD, six at 400 mg QD, four at 600 mg QD and one at 400 mg BID); eight with ketoconazole (400 mg QD); and six with placebo. Trial drugs were administered for 14 days.

In this clinical trial, the mean 12 ‑hour plasma cortisol area under the concentration ‑time curve, or AUC, levels were modestly reduced in the COR ‑003 treatment groups at day 15 compared to baseline, which is consistent with the known mechanism of action of COR ‑003. However, counter ‑regulation in diabetic patients with a normal hypothalamic pituitary adrenal axis may have limited the observed cortisol suppression. Similarly, only a small, nonsignificant effect on glycated hemoglobin, or HbA1c, and fasting glucose levels was observed. However, consistent with the known inhibitory effect of ketoconazole on cholesterol synthesis, total cholesterol, LDL -chol , and to a lesser extent HDL -chol levels, but not triglycerides, were significantly decreased in a dose ‑dependent manner by COR ‑003. The mean change from baseline in total cholesterol, LDL -chol and HDL -chol at a dose of 400 mg QD was similar to those observed in 400 mg QD ketoconazole and higher in the 600 mg QD COR ‑003 group. Also, for the COR ‑003 treatment groups, there was a statistically significant dose response in the reduction in mean levels of CRP on day 15 compared with baseline. This result was statistically significant, with a p ‑value of 0.027. P ‑value is a conventional statistical method for measuring the significance of clinical results. Typically, a p ‑value of 0.05 or less represents statistical significance, meaning that there is a 1 ‑in ‑20 or less statistical probability that the observed results occurred by chance. In contrast, mean levels of CRP increased in the ketoconazole ‑treated group and less so in the placebo group. CRP is an indicator of inflammation, including vascular inflammation. The reduction in cholesterol and CRP observed in patients with type 2 diabetes may

indicate a potential beneficial effect of COR ‑003 on cardiovascular risk factors observed in patients with endogenous Cushing’s syndrome.

Plasma AUCs and maximum concentration in blood, or Cmax, increased in a non ‑proportional manner over the dose range of 200 mg to 400 mg on days one and 14. Clearance values were similar for the 200 mg and 400 mg doses of COR ‑003, but significantly decreased at the 600 mg COR ‑003 dose, on days one and 14.

Administration of COR ‑003 in this trial in patients with type 2 diabetes was observed to be well ‑tolerated. Headache and nausea were the most frequently reported adverse events, some of which were considered drug ‑related. There were no serious adverse events, and no clinically meaningful changes in hematology, blood chemistry and urinalysis were noted in any treatment group. No treatment ‑related changes in liver function tests, or LFTs, were detected.

DIO ‑502 and DIO ‑503 Clinical Trials

This clinical trial was a four ‑month, double ‑blind, randomized, placebo ‑controlled clinical trial of dose ‑ranging COR ‑003 with metformin and atorvastatin that enrolled 133 of a planned 200 patients with type 2 diabetes, consisting of males and females between the ages of 18 and 70. Included patients were on concomitant metformin treatment with a minimum daily dose of 500 mg with an HbA1c level of 7% to 10%. Additionally, all patients were treated with 10 mg atorvastatin or its placebo to evaluate the effect of COR ‑003 on lipid profiles given cholesterol ‑lowering drugs. Thus, patients were randomized into eight separate arms in the clinical trial: placebo or COR ‑003 at 150 mg; 300 mg; and 450 mg with either atorvastatin 10 mg or atorvastatin placebo.

Clinical trial DIO ‑503 was an open ‑label, follow ‑on extension to DIO ‑502 to evaluate safety, tolerability and pharmacodynamics after 24 weeks of dosing with COR ‑003 in combination with metformin, and with and without atorvastatin in subjects with type 2 diabetes.

DiObex terminated these clinical trials prior to completion. At the time of trial termination, a total of 133 patients were enrolled in the DIO ‑502 and DIO ‑503 trials, and 129 patients had been treated. Efficacy and pharmacokinetics were not analyzed due to the early termination. The frequency of adverse events reported was generally similar across treatment arms. Diarrhea was the most frequently reported adverse event overall with administration of COR ‑003. No serious adverse events were reported in the terminated studies.

A safety signal of elevated liver enzymes was identified in 10 of the 129 treated patients in the DIO ‑502 and DIO ‑503 trials. No case of Hy’s law ( i.e., an increase of liver transaminases at or above three times the upper level of normal values; increase to total bilirubin at or above two times the upper level of the normal value; no or little sign of cholestasis; or absence of other reasons for liver injury, such as viral hepatitis) was observed. An observation of Hy’s Law would have indicated a high risk of potentially serious drug-related hepatotoxicity.  Three of the treated patients were withdrawn from the clinical trials as required in the safety monitoring plan. In these three patients, LFT levels returned to normal after study drug was discontinued. In addition, three other patients had modest elevations in LFT levels. While these levels did not require termination by the trial protocol, the investigators elected to terminate these patients from the clinical trial. LFTs in these patients also returned to normal after the study drug was discontinued. Four additional patients required close monitoring per the protocol, and had resolution of their LFT abnormalities while on the study drug. The first case of elevated liver enzymes occurred in a patient who admitted to excessive alcohol consumption. The remaining cases developed over the following three months. An independent external safety review committee recommended continuation of the studies with no modifications.

Due to the design of these clinical trials, the independent data safety monitoring board for the trials stated that it was impossible to interpret which of the two drugs, COR ‑003 or atorvastatin, was primarily associated with the side effect profile observed in these trials. A more detailed analysis of the liver transaminase elevations in this clinical trial showed that there was no correlation between the dose of COR ‑003 and abnormal liver transaminases.

Phase 1 Clinical Trials

AA34509 Clinical Trial

This clinical trial was designed primarily to evaluate the effect of COR ‑003 on the pharmacokinetics of concurrently administered felodipine. Subjects were administered 400 mg of COR ‑003 or placebo QD for eight days. On the fifth day of the trial, subjects received a single 5 mg dose of felodipine. Beginning on day five, pharmacokinetics of COR ‑003 were monitored for 24 hours, and pharmacokinetics of felodipine were monitored for 72 hours. The trial was a cross ‑over trial involving 18 subjects, 16 of whom completed the trial.

AA34510 Clinical Trial

This clinical trial was designed primarily to evaluate the effect of concomitant administration of COR ‑003 or racemic ketoconazole on the pharmacokinetics of atorvastatin. Subjects were administered 400 mg of COR ‑003, 400 mg of racemic ketoconazole or placebo daily for seven days. On day five, all subjects received a single 80 mg dose of atorvastatin. After administration of the racemic mixture, ketoconazole, pharmacokinetics of the two single enantiomers 2R,4S ‑ketoconazole and 2S,4R ‑ketoconazole, were evaluated for 24 hours on day five using a chiral bioanalytical method. Pharmacokinetics of atorvastatin were evaluated for 60 hours starting at the time of administration on day five. The trial was a cross ‑over trial involving 24 subjects, all of whom completed the clinical trial.

Key Findings from the Clinical Trials of COR ‑003

Phase 2 Efficacy and Safety Trials in Diabetic Patients:

Phase 1 Drug Interaction Clinical Trials in Normal Volunteers:

Overview of COR ‑005— Phase 2 Product Candidate for the Treatment of Acromegaly

We are developing COR ‑005 for the treatment of acromegaly. We acquired COR ‑005 in 2015 as part of our strategy to build our rare endocrine franchise. Acromegaly is a rare endocrine disorder that most commonly results from a benign tumor of the pituitary gland, leading to excess production of GH and IGF ‑1. The treatment goal is the normalization of GH and IGF ‑1, which is the main cause of the detrimental clinical signs and symptoms of acromegaly.

              COR 005 is a novel SSA in Phase 2 clinical development for the treatment of acromegaly patients who have not adequately responded to surgery, or acromegaly patients for whom surgery is not appropriate. SSAs are peptides that are administered as deep subcutaneous or intramuscular injections, typically as long-acting formulations for monthly injections .  They are the most commonly used drug therapy for the treatment of acromegaly and work by binding to specific subtypes of SSTRs that are expressed by the tumor. Binding of SSAs to these SSTRs leads to the beneficial inhibition of GH secretion, but also unwanted inhibition of secretion of other endocrine hormones such as insulin and glucagon in other organs. Like other SSAs, COR-005 is a peptide that we are developing for subcutaneous injection. Based on the differentiated activation pattern of COR 005 to SSTR subtypes and preclinical and clinical data, we believe that it may offer an improved efficacy and safety profile relative to existing drug therapies for acromegaly. In the five clinical studies completed to date in healthy subjects and patients with acromegaly outside the United States, a beneficial reduction of GH was observed, and, when compared with octreotide, there was no or less reduction of insulin. In addition to a dose ranging clinical trial, we anticipate that our clinical program will include at least one multinational pivotal clinical trial for registration comparing COR 005 to other treatments or placebo, including at least six months of controlled treatment to evaluate efficacy and one year of observation to evaluate safety.  COR 005 has been granted orphan drug designation by the FDA and the EMA. We expect to select and finalize the technology to be utilized for a proprietary long-acting formulation of COR-005 in 2016.  Additional COR-005 development activities will be sequenced to ensure that the Company’s existing cash resources are sufficient to fund planned operations through the receipt of top-line data from the COR-003 SONICS trial.

Overview of Acromegaly

Acromegaly is a rare endocrine disorder that most commonly results from a benign tumor of the pituitary gland, or adenoma, leading to excess production of GH and IGF ‑1, key regulators of growth and metabolism. High levels of GH over ‑activate receptors resulting in excess IGF ‑1 in patients with acromegaly. A common criterion for the successful treatment of acromegaly is normalization of IGF ‑1 levels, since reduction of excess IGF ‑1 correlates closely with relief of clinical symptoms.

The progression of acromegaly is typically slow, and acromegaly often is not clinically diagnosed for 10 years or more. As the disease advances, patients typically exhibit abnormal growth throughout the body. Acromegaly most commonly affects middle ‑aged patients with the mean age of onset being 40 to 45 years. In adults, the condition results in the expansion of the circumference of bones and increased density of bone, causing pain and altered appearance. This altered appearance is most apparent in the head and face, but also impacts the entire body. Patients may experience abnormal cartilage growth and pressure in joints, enlargement of visceral organs and cardiovascular disease. Upper airway obstruction with sleep apnea occurs in approximately 40% to 50% of patients, and is associated with both soft tissue laryngeal airway obstruction and central sleep dysfunction. Patients may also experience metabolic disruptions such as insulin resistance and diabetes, which is estimated to develop in 10% to 15% of patients. In addition, some patients with large tumors experience symptoms caused by the tumor itself, including headaches, vision problems,

impotence, low sex drive and changes in the menstrual cycle. These problems, if left untreated, lead to disfigurement, disability, and ultimately premature death.

We estimate the acromegaly drug therapy market in 2014 , including octreotide and lanreotide for acromegaly and total pegvisomant , was approximately $990 million worldwide. Based on recent publications, we estimate the diagnosed prevalence of acromegaly to be approximately 24,000 in the United States, and approximately 43,000 in the European Union. Prevalence estimates vary considerably and it is believed that acromegaly is underdiagnosed. Estimates of the mortality rate in patients with acromegaly varies, with published estimates reporting values as high as 2.7 times normal.

Current Treatment Landscape and Limitations on Current Treatment Options

Initial treatment for acromegaly is usually surgery with or without radiation therapy. An estimated 80% of patients are eligible for surgery. The initial surgical cure rate is estimated at approximately 80% to 90% for patients with microadenomas, which are tumors less than 10 mm in diameter, and less than 50% for patients with macroadenomas, which are tumors greater than 10 mm in diameter. Three percent to 10% of patients will experience a recurrence in the years following an initially successful surgery. An estimated 40% to 50% of acromegaly patients will be prescribed for drug therapy, including those for whom surgery is not feasible, is contraindicated or has been unsuccessful. This represents approximately 9,600 to 12,000 patients in the United States and 17,000 to 22,000 patients in the European Union. The goal of drug therapy is primarily to normalize IGF ‑1 levels and GH levels. Currently, SSAs are the most commonly used drug therapy for the treatment of patients with acromegaly. Less than one ‑half of treated patients do not adequately respond to SSAs with full IGF ‑1 normalization and need alternative or adjunctive drug therapies.

Somatostatin is a naturally occurring cyclic peptide, which is a biological molecule consisting of linked amino acids. Somatostatin inhibits the secretion of a broad array of hormones secreted by the pituitary gland, the pancreas and the gastrointestinal tract, or the GI tract, including GH, insulin and glucagon. It also modulates the rate of gastric emptying, the flow of bile from the gallbladder and intestinal blood flow, and inhibits the growth of normal and tumor cells. These functions are mediated primarily by the binding of somatostatin to a family of five SSTRs. There is considerable overlap between activation of these different receptors and their effects on biological functions. GH secretion is inhibited by activation of some of these receptors.

Pituitary adenomas express various patterns of SSTRs depending on whether they produce primarily GH, ACTH or other pituitary hormones. This excessive production leads to acromegaly, Cushing’s disease or other diseases, respectively. SSAs are structurally similar to somatostatins and have a therapeutic effect in pituitary adenomas, since they bind to the SSTRs on these tumors and inhibit secretion of hormones such as GH or ACTH. Currently approved SSAs used to treat acromegaly are: octreotide which is available in two formulations, one that is typically injected three times a day, or TID, subcutaneously (Sandostatin), and a second that is a long ‑acting intramuscular depot for monthly injection (Sandostatin LAR); lanreotide (Somatuline), a slow release or autogel formulation for deep subcutaneous injection once a month; and pasireotide available as a long ‑acting intramuscular depot for monthly injection (Signifor LAR).

There is a significant unmet need in the treatment of acromegaly. Although long ‑acting SSAs are the most commonly used drugs, they have several limitations, including:  

 Variable efficacy: Estimates of responder rate vary significantly by study design, but the proportion of patients who are effectively managed on SSA monotherapies is now believed to be less than 50%.

 Disruption of glucose metabolism: SSAs can inhibit insulin and glucagon secretion, potentially leading to an exacerbation of glucose control issues already experienced by some acromegaly patients. Clinical trials with all approved SSAs for acromegaly showed increased rates of hyperglycemia and hypoglycemia, and pasireotide also showed an increased rate of diabetes.

 Tolerability issues due to gastrointestinal side effects: Up to one ‑third of patients experience gastrointestinal side effects, which can often be transient, but sometimes may require the adjustment of

dosing or choice of drug. Up to 62% of patients have gallbladder complications, such as gallstones or sludge in the gallbladder. Physicians we surveyed estimate that approximately 38% of their SSA patients take medication to prevent gallstones and approximately 20% have had gallbladder surgery in the last five years.

 Convenience: All of the long-acting SSA formulations in the United States require administration by a health care profe ssional, and often necessitate monthly office visits to receive injections.

While long ‑term monthly administration controls GH hypersecretion in two ‑thirds of treated patients, some patients do not respond to SSAs with full IGF ‑1 normalization and need to move to other drug therapies, which are used as alternatives to or in combination with SSAs. These additional drug therapies also aim to reduce IGF ‑1. Somavert (pegvisomant) is a human GH receptor antagonist that binds to the GH receptor, but does not activate the mediators leading to IGF ‑1 production and secretion, thereby acting as a functional GH receptor antagonist, or blocker. The resulting clinical effect is a dose ‑dependent inhibition of IGF ‑1. However, because it is administered as a subcutaneous injection on a daily basis, we believe patient acceptance and compliance may be reduced. Dopamine receptor agonists such as cabergoline also inhibit GH secretion by pituitary adenomas expressing the dopamine receptor, which leads to a moderate inhibition of IGF ‑1. This class of drugs is not approved by the FDA for the treatment of acromegaly.

A number of products are currently in development for the treatment of acromegaly that may potentially compete against COR ‑005. Chi asma has filed an NDA in the United States for RG-3806, an oral octreotide formulation. The majority of compounds in development for the treatment of acromegaly are reformulations of octreotide acetate that potentially offer improved convenience to patients and physicians. These compounds are unlikely to address the market’s key unmet need for drugs with improved efficacy and safety profile.

Our Solution—COR ‑005, a Novel Somatostatin Analog

COR ‑005, or veldotide , also referred to as DG3173, is a novel multi ‑receptor targeted SSA in Phase 2 clinical development for the treatment of acromegaly. In contrast to approved SSAs, COR ‑005 activates a different subset of SSTRs. Like pasireotide, it activates SSTR2 and SSTR5. However, in contrast to pasireotide, it possesses a similar affinity for SSTR2 than SSTR5. COR ‑005 is also the only SSA with a high affinity for SSTR4. COR ‑005 does not bind to SSTR3 or the opiate receptor at physiological concentrations. While the functional consequences of the binding of SSAs to the opiate receptor are not fully understood, it has been suggested as a mechanism contributing to inhibition of insulin secretion by SSAs and may also influence their effect on gastrointestinal motility. In vitro data suggest that a higher number of adenomas are a target for GH inhibition by COR ‑005 as compared to octreotide, which is referred to as a single receptor targeted SSA that binds predominantly to SSTR2 only, potentially resulting in an increased responder rate. Preclinical data from animal studies, and clinical data in healthy subjects and patients with acromegaly, showed that insulin secretion was less inhibited, potentially resulting in reduced side effects on blood glucose and an improved safety and tolerability profile. Preclinical data further suggest a reduced effect on gallbladder motility, or flow from the gallbladder.

In four clinical trials with single subcutaneous injections or infusion and in one six ‑day clinical trial, all of which were conducted with an immediate release formulation of COR ‑005 in healthy subjects or patients with acromegaly, COR ‑005 was observed to have a tolerability profile comparable to that of octreotide. However, unlike octreotide, subjects treated with COR ‑005 were observed to have less or no reduction in peak insulin secretion after a meal. We believe these preliminary clinical findings corroborate the profile of COR ‑005 observed in preclinical studies, which suggested inhibition of GH se cretion without detrimental effects on post ‑meal insulin or glucose metabolism. These studies were too short to assess the effect on flow from the gallbladder. These preliminary findings contrast favorably with the well ‑described insulin and glucose perturbations caused by octreotide, lanreotide and pasireotide, and we intend to conduct additional clinical trials to evaluate the clinical profile of COR ‑005 and its differentiation from existing SSAs. With the potentially superior efficacy, safety and tolerability profile suggested by preclinical studies and early clinical trials, we believe COR ‑005 has the potential to become the standard ‑of ‑care SSA, with distinct therapeutic advantages relative to currently approved SSAs as treatment of acromegaly.

Completed Clinical Trials

Five clinical trials of COR ‑005 have been performed to date: three in healthy male volunteers and two in patients with acromegaly, all of which employed an immediate release, short ‑acting formulation injected subcutaneously. At the time the clinical trials described below were conducted, COR ‑005 was named DG3173. These trials were conducted by Aspireo Pharmaceuticals Ltd., other than DG3173 ‑I ‑001, which was conducted by Develogen AG.

The following table summarizes these trials.

The clinical trials involved 122 healthy subjects in the Phase 1 trials and 28 patients with acromegaly in the Phase 2 clinical trials. No serious adverse events were observed, and mostly mild adverse events typical for SSAs such as injection site reactions and gastrointestinal side effects were reported. There was no evidence that COR ‑005 adversely affects the liver, kidneys or other organ systems, including the cardiovascular system. Data from the multiple ascending dose clinical trial in healthy subjects (Study I ‑002) showed inhibition of GH comparable to octreotide, but no or less inhibition of insulin secretion and less effect on glucose levels. The single ascending dose trial in patients with acromegaly (Study II ‑01) and the continuous infusion study in patients with acromegaly (Study II ‑02) confirmed that COR-005 also suppresses excessively produced growth hormone to a similar maximal extent as octreotide.

Phase 2 Clinical Trials

DG3173 ‑II ‑02 Clinical Trial

This clinical trial was an open ‑label, crossover, active ‑ and placebo ‑controlled, continuous 23 ‑hour infusion, randomized dose ‑ranging clinical trial in eight male or female acromegaly patients aged 31 to 54 years that was intended to assess the effect on GH levels of 23-hour constant subcutaneous infusions of different doses of COR-005 or placebo and three subcutaneous injections of a standard dose of octreotide, administered over the same time frame. Postprandial insulin and glucose were also assessed over a 4-hour period following a standardized midday meal on the second study day. Pharmacokinetics, safety, and tolerability were also assessed.

COR ‑005 at doses of 920 µg, 2760 µg, and 5520 µg per 23 hours were infused in a random visit sequence at a rate of 0.04 mg, 0.12 mg, and 0.24 mg per hour spaced one week apart. The placebo, saline, was always infused one week prior to COR ‑005, and octreotide at a dose of 300 µg was injected TID one week after the last COR ‑005 dose. Patients had not received any specific treatment for acromegaly in the 12 months prior to the clinical trial and had to have blood IGF ‑1 concentration greater than or equal to 1.2 times the upper limit of normal reference range adjusted for age plus random blood GH greater than or equal to 5 µg/L in the 12 months prior to the clinical trial and increased values at screening.

There was a decrease in AUC _11-23h for serum GH following COR-005 treatment compared to baseline (placebo). The decrease in AUC _11-23h was greater with octreotide than with placebo and the lower and middle doses of DG3173. The reduction in GH of the 5520 µg dose of COR-005 closely approached that of octreotide (mean percentage reduction 67% vs. 73%). Six of 8 patients receiving the mid or high dose of COR-005 achieved at least a 50% reduction in GH AUC _11-23h   versus placebo, compared with 7 of 8 achieving the same threshold reduction during octreotide injections.

Prior to eating a standardized meal begun 19 hours after the treatments were started, glucose levels were reduced as compared to pre-dose baseline glucose values among placebo and the two lower COR-005 treatment groups (median percent reductions of 12%, 8.8%, 4.2%, respectively), whereas they were similar to pre-dose values in the highest COR-005 group (median increase 3.4%) and had increased in the octreotide group above baseline (median increase 24%). Following the standardized meal, serum glucose increased to a similar extent in placebo and the two lower COR-005 dose groups (median percent change 27% to 33% above pre-dose baseline), whereas the maximal excursions were somewhat higher in the highest COR-005 dose group (median 46% above pre-dose) and in the octreotide group (median 63% above pre-dose). Pre-dose insulin values were reduced by all treatments prior to receiving the standardized meal, placebo (median reduction of 25%) less so than the active drugs (median reductions of 49% to 74%), presumably reflecting improved glucose control among active treatments. Insulin excursions following the meal were highly variable and no apparent effect of treatment was readily discernible. Additional analyses, including an assessment of AUC values for glucose and insulin are planned.

There were no serious adverse events or adverse events leading to withdrawal during the study; all adverse events were mild or moderate in severity. There was no notable effect of COR-005 dose on overall incidence of adverse events in this small number of patients. Four events in one patient, all following octreotide treatment, were assessed as having a suspected relationship to study treatment, all other events were assessed as not suspected. The only adverse event reported by more than one patient was headache, reported by four patients receiving COR-005. There were no trends or clinically meaningful changes over time in laboratory safety analytes, vital signs or the incidence of abnormal ECGs following COR-005 or octreotide treatment, overall or in any individual.

DG3173 ‑II ‑01 Clinical Trial

This clinical trial was an open ‑label, single ‑center, single ‑dose, active ‑controlled, cross ‑over clinical trial in 20 male or female acromegaly patients. In a fixed sequence with one week washout between treatments, untreated patients received octreotide 300 µg and then each of four doses of subcutaneous COR ‑005 (100 µg, 300 µg, 900 µg, 1800 µg in that sequence).

Patients had not received any specific treatment for acromegaly in the 12 months prior to the trial and had to have blood IGF ‑1 concentration greater than or equal to 1.2 times the upper limit of normal reference range adjusted for age, plus random blood growth hormone greater than or equal to 5 µg/L in the six months prior to the trial. Mean age was 48 years, 90% were female, and mean body mass index was 29. Thirteen patients had received prior treatment for acromegaly, including nine with prior surgery (three of these with subsequent radiation therapy), and nine with medications.

GH values were obtained at baseline, or prior to treatment, and at intervals over eight hours following each treatment. GH was rapidly suppressed by all treatments, and the effect of COR ‑005 was dose ‑dependent, both in terms of suppression extent and duration of effect. The 1800 µg dose of COR ‑005 and octreotide maximally suppressed GH to a similar extent (mean percentage change 60% for each), with a slightly lesser maximal suppression with the 900 µg dose of COR ‑005. This suppression resulted in a similar proportion of patients achieving GH levels less than or equal to 2.5 ng/mL among the two highest doses of COR ‑005 and octreotide (37% to 42%). Also, the time to achieve maximal suppression was shorter for the two highest doses of COR ‑005 than for octreotide (median two hours for octreotide compared to one hour for the maximally effective COR ‑005 dose). However, the duration of GH suppression following single dosing was longer for octreotide than COR ‑005 at all doses, resulting in greater suppression by octreotide of GH as measured by AUC 0 to 8 hours (octreotide 60% mean percentage suppression compared to COR ‑005 1800 µg 37% mean percentage suppression). We intend to optimize the formulation of COR ‑005 to prolong exposure, which should lead to increased sustained GH suppression.

Fasting glucose was assessed at screening and at eight hours after each single dose of study drug. Mean glucose concentrations during COR ‑005 treatments were similar to the screening values, but were elevated by approximately 2.8 mmol/L after eight hours of treatment with octreotide. At the time of glucose sampling, growth hormone levels were still close to maximally suppressed by octreotide (median 74% below baseline) but had returned to baseline levels in all COR-005 dose groups except the highest dose group (1800 µg), which was suppressed by a median of 17% below baseline. Glucose values for octreotide were always determined shortly after clinical trial entry. In contrast, glucose values for the higher doses of COR ‑005 were drawn several weeks after trial entry. Participation in the clinical trial per se would be expected to result in improved glucose control due to observed behavioral changes in trial participants.

There were no serious adverse events. Three out of the 20 patients reported a combined total of three adverse events. One adverse event, a moderately severe headache reported in a 62 year old female as encephalopathy exacerbation, led to early clinical trial discontinuation after the 300 µg dose of COR ‑005 follow ‑up visit. The patient who discontinued early had long ‑standing acromegaly with a very high IGF ‑1 at baseline (5.5x upper limit of normal, or ULN) and a history of encephalopathy. The investigator considered the relationship to study drug as unassessable. Pharmacokinetic outcomes for COR ‑005 were similar to those from Phase 1 clinical trials.

Phase 1 Clinical Trials

DG3173 ‑I ‑003 Clinical Trial

This clinical trial was a single ‑blind, placebo ‑ and active ‑controlled, single ascending dose, randomized cross ‑over clinical trial in eight healthy male subjects, aged 18 to 45 years. Octreotide at a dose of 300 µg and COR ‑005 at doses of 300 µg, 900 µg and 1800 µg were injected subcutaneously in random order following a mixed meal test, with four ‑ to five ‑day washouts between administrations.

Relative to placebo, both COR ‑005 and octreotide were associated with a delay in the time to peak post ‑meal insulin. However, the magnitude of peak insulin was similar between placebo and COR ‑005. In contrast, octreotide delayed and suppressed insulin release during the meal, with peak insulin diminished by 81% and AUC by 62% relative to placebo. The differences in all of these measures, including time to peak, magnitude of peak and AUC, between COR ‑005 and octreotide were statistically significant with a p ‑value of less than 0.02 for all parameters. Relative to placebo, all four drug injections were associated with post ‑meal glucose excursions. The effect of COR ‑005 on glucose AUC was dose ‑related. Glucose was maintained at a high level for a longer time following octreotide relative to COR ‑005. The glucose AUC for octreotide during the test was elevated relative to all doses of COR ‑005.

Peak post ‑meal glucagon was not influenced appreciably by COR ‑005, whereas a suppression by 50% relative to placebo was observed for octreotide. There was a modest effect of COR ‑005 at 900 µg and 1800 µg doses, with up to 28% suppression of glucagon AUC. In contrast, octreotide had a pronounced effect on glucagon AUC, suppressed by 63% relative to placebo.

There were no serious adverse events. Adverse events were mostly mild in severity and did not result in any discontinuations. Injection site redness or itching and gastrointestinal system ‑related complaints (most commonly diarrhea) were the most commonly reported adverse events for both octreotide and COR ‑005.

DG3173 ‑I ‑002 Clinical Trial

This clinical trial was a single ‑blind, placebo ‑ and active ‑controlled, multiple escalating dose clinical trial in 42 healthy male subjects, aged 18 to 45 years. COR ‑005 was given TID eight hours apart from days two through eight. There were seven clinical trial groups, with six subjects total per group. In the first four clinical trial groups, four subjects received COR ‑005 in doses that ranged from 100 µg to 1800 µg TID, one received octreotide 300 µg TID, and one received placebo. In the three remaining clinical trial groups, four subjects received COR ‑005 plus octreotide, one received placebo plus placebo and one received octreotide plus placebo.

The effects of COR ‑005 with or without added octreotide on GH, insulin and glucose levels were ascertained using a growth hormone ‑releasing hormone, or GHRH, test on days one (pretreatment) and three. COR ‑005 and octreotide given as monotherapy for four doses both suppressed the GHRH ‑induced rise in GH, with 900 µg of COR ‑005 approximately equivalent to 300 µg of octreotide, with mean AUC reductions compared to pre ‑drug administrations of 65% and 70%, respectively, whereas the 1800 µg dose of COR ‑005 gave somewhat better reduction, with mean AUC reduction of 85%. When the two drugs were used in combination, a maximum suppression of GH response was noted during administration of the COR ‑005 900 µg. The highest dose of COR ‑005 1800 µg was not tested in combination with octreotide. Insulin levels were suppressed following treatment with octreotide by 50% from pre ‑drug, whereas no such effect was noted during COR ‑005 administrations. Blood glucose concentrations were mostly stable following GHRH infusion. Glucose levels were observed to be similar before and after administrations of both COR ‑005 and octreotide. There was no clear effect of either drug or saline given alone or in combination with the exception of COR ‑005 300 µg, for which glucose levels tended to be lower after administration, both alone and in combination with octreotide.

COR ‑005 was generally well ‑tolerated and a maximum tolerated dose was not reached. Adverse events were mostly mild in severity. Injection site redness, itching and gastrointestinal system ‑related complaints (most commonly diarrhea) were the most commonly reported adverse events and appeared to occur in similar percentages of octreotide ‑ and COR ‑005 ‑treated subjects. There was small to no accumulation of COR ‑005 in plasma after repeated doses. Exposure to COR ‑005 was dose proportional and linear after the first and last doses. When COR ‑005 was given concomitantly with octreotide 300 µg TID, COR ‑005 pharmacokinetics were similar to COR ‑005 given alone.

DG3173 ‑I ‑001 Clinical Trial

This clinical trial was a double ‑blind, placebo controlled, single ascending dose clinical trial in 72 healthy male subjects, age 18 to 45 years. A single subcutaneous dose ranging between 10 µg to 2000 µg of COR ‑005 or placebo was administered under fasting conditions. COR ‑005 was generally well ‑tolerated, and the maximum tolerated dose was not reached.

There were no serious adverse events. There were 21 adverse events reported in 15 subjects of which twenty were regarded as mild in severity and one was moderate (diarrhea, 800 µg dose). The time to maximum drug concentration in blood was generally within one hour. Maximum drug concentration in blood generally increased proportionally with dose. The cumulative urinary excretion of drug was proportional to dose ingested, and fractional excretion was consistently about 4% to 5% of the respective doses administered.

In an exploratory pharmacodynamic analysis, GH plasma concentrations were consistent with the suppression of GH by COR ‑005.

Anticipated Clinical Trials

We expect clinical trials of COR ‑005 to be designed to establish the optimal dosage range for normalization of IGF ‑1 in chronic treatment of acromegaly using a proprietary subcutaneous ‑injection formulation currently under development. More than one formulation may be used during later clinical development. We may also need to assess pharmacokinetics, safety and efficacy in patients with liver or kidney disease. We expect to conduct a pre ‑IND meeting with the FDA and a Scientific Advice meeting in Europe prior to advancing COR ‑005 into further studies and pivotal clinical trials. In addition to a formulation and dosing range clinical trial, we anticipate that our clinical program will include at least one multi ‑national pivotal clinical trial for registration comparing COR ‑005 to other treatments or placebo, including at least six months of controlled treatment to evaluate efficacy and one year of observation to evaluate safety.

As a next generation SSA with potential growth ‑inhibitory effects on other pituitary tumors, COR ‑005 may also have utility in treating other rare endocrine diseases. We plan therefore to explore the utility of COR ‑005 in Cushing’s disease and neuroendocrine tumors in small pilot studies in the respective patient populations.

Other Product Candidates    

BP ‑2002 is a novel, preclinical ‑stage, orally delivered biological therapeutic for diabetes. BP ‑2002 is a genetically modified lactobacillus bacteria. Unmodified lactobacilli are natural probiotics that exist in the human GI tract and have been shown to be beneficial in a number of ways when taken orally. The BP ‑2002 technology advances this approach into a novel therapeutic application for diabetes. The genetically engineered lactobacilli are engineered to express full ‑length (1 ‑37) glucagon ‑like peptide ‑1, or GLP ‑1, and deliver it into the GI tract. The GLP ‑1 acts as a signaling molecule to trigger the transformation of intestinal enteroendocrine cells into glucose ‑responsive insulin secreting cells.

In an animal model for diabetes, treatment with BP ‑2001, the immediate predecessor to BP-2002, was observed to result in a reduction in hyperglycemia. Diabetic rats that were fed daily with human lactobacilli engineered to secrete GLP ‑1(1 ‑37) showed significant increases in insulin levels and were significantly more glucose tolerant than those fed the unmodified bacterial strain. These rats developed insulin ‑producing cells within the upper intestine in numbers sufficient to replace 25% to 33% of the insulin capacity of nondiabetic healthy rats.  We have decided not to invest further in the development of BP-2002, and are currently exploring potential partnership and out-licensing opportunities for BP-2002. 

Discontinued License Agreement

Antisense Therapeutics

In May 2015, we entered into an exclusive license agreement, or the Antisense License Agreement, with Antisense Therapeutics that provided us with development and commercialization rights to Antisense Therapeutics’ product candidate, ATL1103, for endocrinology applications (s pecifically excluding the treatment of any form of cancer and the treatment of any complications of diabetes ) . We refer to this product candidate as COR ‑004. Under the terms of the Antisense License Agreement, we paid Antisense Therapeutics an initial upfront license fee of $3.0 million in cash, and we also invested $2.0 million in Antisense Therapeutics equity. The terms of the Antisense License Agreement provide that we could terminate the Antisense License Agreement upon 90 days’ prior written notice to Antisense Therapeutics if we believe the further development and commercialization of COR ‑004 was no longer feasible d ue to a material change that was beyond our control. If, however, it is determined that we terminate d the Antisense License Agreement for convenience, we would be required to pay Antisense Therapeutics a $2.0 million termination fee.  On March 7 , 2016, we provided a notice to Antisense Therapeutics of our intent to terminate the Antisense License Agreement effective June 7 , 2016 because , based on receipt of feedback from regulatory authorities, we believe the further development and commercialization of COR ‑004 is no longer feasible due to material change s that were beyond our control. We have received a reply from Antisense Therapeutics objecting to our termination notice and to our assertion that the further development and commercialization of COR-004 was no longer feasible due to material

changes that were beyond our control.  The reply also requests that the parties appoint an independent expert to resolve this dispute in accordance with the terms of the Antisense License Agreement. 

Commercialization Strategy

Given our current stage of product development, we do not have a commercialization infrastructure. We intend to independently commercialize our rare disease ‑focused product candidates, if approved, in the United States, the European Union and other key global markets. We believe that we can address the markets of our current product candidates by targeting endocrinologists that are focused on the treatment of rare pituitary disorders primarily stemming from benign tumors. Given the relatively concentrated specialty prescriber base, we plan to create a sales force of approximately 30 representatives in the United States as well in the European Union to market our endocrine product candidates, if approved. In building our sales force, we intend to recruit representatives with experience calling on endocrinologists or marketing orphan drug designated products.

Our commercial strategy for our product candidates, if approved, will encompass promoting their benefits compared to other treatment alternatives, as well as a concerted effort to raise awareness about the underlying disease among physicians with the goal of increasing the rate of diagnosis when the symptoms may otherwise be overlooked. We believe the combination of our commercial effort and our product candidate profiles will facilitate our ability to successfully penetrate our target markets.

In-Licensing and Acquisition Agreement s

On June 30, 2015, we acquired from Aspireo Pharmaceuticals Ltd., an Israeli company, its product candidate, DG3173. We refer to this product candidate as COR ‑005. Under the terms of the acquisition agreement, we issued to Aspireo Pharmaceuticals 2,062,677 common shares, which had a value of $33.2 million on June 30, 2015. In connection with this acquisition, we made a payment to the Office of the Chief Scientist of the Israeli Ministry of Economy, or OCS , in the amount of $3.0 million, which represents the repayment of amounts previously granted by OCS to Aspireo Pharmaceuticals, plus interest, that were used in support of research and development conducted by Aspireo Pharmaceuticals for the development of DG3173. The approval by OCS of the transfer of the assets relating to DG3173 by Aspireo to the Company was subject to the repayment of the original grant plus interest.

On March 30, 2011, a license agreement was executed between BioPancreate and the Cornell Center for Technology Enterprise and Commercialization (CCTEC). Under the terms of the license agreement, BioPancreate obtained certain rights from the CCTEC for commercial development, use and sale of products that use the technology associated with the license.

License issue fees payable to the CCTEC include $15,000 paid within 30 days after the execution of the agreement (Effective Date) and $235,000 to be paid in five equal installments of $47,000 payable annually within 30 day of the Effective Date’s respective anniversary. We are obligated to make milestone payments upon the achievement of certain regulatory and clinical milestones up to $2.6 million in the aggregate. For years in which licensed products are sold, we are required to pay a royalty based on a low single ‑digit percentage of net sales. The minimum annual royalty in such years is $100,000.

In the event the product is sublicensed, up to $3.5 million of certain fees we receive that are not earned royalties or reimbursements for direct costs are due to the CCTEC upon achievement of certain regulatory and clinical milestones.

Manufacturing

The manufacturing, packaging and distribution of COR ‑003 drug product for clinical trials following Good Manufacturing Practices, or GMPs, is currently outsourced under contracts to third parties. We expect to enter into similar arrangements for our other drug product candidates.

Intellectual Property

We actively seek to protect the intellectual property and proprietary technology that we believe is important to our business, including seeking, maintaining, enforcing and defending patent rights for our product candidates and methods of treatment, whether developed internally or licensed from third parties. Our success will depend on our ability to obtain and maintain patent and other protection including data or market exclusivity for our product candidates and methods of treatment, preserve the confidentiality of our know ‑how and operate without infringing the valid and enforceable patents and proprietary rights of third parties.

Our policy is to seek to protect our proprietary position generally by filing patent applications initially at the USPTO. After this initial phase, patent applications claiming priority to the initial application are filed in various countries, including the United States, Europe and Canada. In each case, we determine the strategy and territories required after discussion with our patent professionals with the goal of obtaining relevant coverage in territories that are commercially important to us and our product candidates. We will additionally rely on data exclusivity and patent term extensions when available, including the relevant exclusivity through orphan drug designation. We also rely on trade secrets and know ‑how relating to our underlying product technologies. Prior to making any decision on filing any patent application, we consider with our patent professionals whether patent protection is the most sensible strategy for protecting the invention concerned or whether the invention should be maintained as confidential.

We own or license   7 6 granted patents, of which six are U.S. ‑issued patents, and 37 pending patent applications, of which 1 3 are U.S. patent applications.

We have one pending United States, one pending Canadian and one pending International (Madrid Protocol) trademark application designating Australia, China, European Community, India, Israel, Japan, Mexico, and Turkey for the mark “Strongbridge Biopharma.”

COR ‑003

We own 43 granted patents related to our product candidate, COR ‑003. Issued claims in these patents are directed to methods of treatment of various diseases or conditions associated with elevated cortisol le vels or activity using COR ‑003, including methods of reducing C-reactive protein levels and systemic inflammation through administration of a once-daily dose of COR-003.  The patents have been granted in major territories including Europe, China and Japan. We have five patent applications pending in the United States directed to methods of treating a disease or condition associated with elevated cortisol levels or activity with COR ‑003. We also have three   pending foreign or PCT patent applications for next ‑generation product candidates, including new chemical entities. We have National Phase applications pending in Canada, Japan and the U . S . and are preparing to file additional National Phase applications in Canada, China, Europe and the U . S.     Patents in this portfolio, if and when issued, are expected to expire in 2026, 2027 and 20 30 if there are no patent term adjustments or extensions .

COR ‑005

While we own granted patents in the United States and other major territories, including Europe, Canada and Japan, and pending applications in the United States,   the terms of the patents may not extend beyond the launch date of this product candidate. We intend to rely on orphan and data/marketing exclusivity for COR ‑005.

Laws and Regulations Regarding Patent Terms

The term of individual patents depends upon the legal term of the patents in the countries in which they are obtained. In most countries in which we file, the patent term is 20 years from the earliest date of filing a non ‑provisional application. In the United States, a patent term may be shortened if a patent is terminally disclaimed over another patent or as a result of delays in a patent prosecution by the patentee. A patent’s term may be lengthened by a patent term adjustment, which compensates a patentee for administrative delays by the USPTO in granting a patent. The patent term of a European patent is 20 years from its effective filing date, which, unlike in the United States, is not subject to patent term adjustments in the same way as U.S. patents.

The term of a patent that covers a FDA ‑approved drug or biologic may also be eligible for patent term extension, which permits patent term restoration as compensation for the patent term lost during the FDA regulatory review process. The Drug Price Competition and Patent Term Restoration Act of 1984, or the Hatch ‑Waxman Act, permits a patent term extension of up to five years beyond the expiration of the patent. The length of the patent term extension is related to the length of time the drug or biologic is under regulatory review. Patent extensions cannot extend the remaining term of a patent beyond a total of 14 years from the date of product approval and only one patent applicable to an approved drug may be extended. Similar provisions are available in Europe and other jurisdictions to extend the term of a patent that covers an approved drug, for example Supplementary Protection Certificates. In the future, if and when our products receive FDA approval, we expect to apply for patent term extensions on patents covering those products. We anticipate that some of our issued patents may be eligible for patent term extensions but such extensions may not be available and therefore our commercial monopoly may be restricted.

Competition

The biotechnology and pharmaceutical industries are characterized by rapidly advancing technologies, intense competition and a strong emphasis on proprietary products. While we believe that our scientific knowledge, technology, and development experience provide us with competitive advantages, we face potential competition from many different sources, including major pharmaceutical, specialty pharmaceutical and biotechnology companies, academic institutions, governmental agencies and public and private research institutions. Any product candidates that we successfully develop and commercialize will compete with existing products and new products that may become available in the future. Many of our competitors, alone or with their strategic partners, have greater experience than we do in conducting preclinical studies and clinical trials, and obtaining FDA, EMA and other regulatory approvals, and have substantially greater financial, technical and other resources than we do, such as larger research and development, clinical, marketing and manufacturing organizations. As a result, these companies may obtain regulatory approval for competing products more rapidly than we are able and may be more effective in selling and marketing their products. Companies that complete clinical trials, obtain required regulatory authority approvals and commence commercial sale of their drugs before their competitors may achieve a significant competitive advantage, and our commercial opportunity could be reduced or eliminated if competitors develop and commercialize products that are safer, more effective, have fewer or less severe side effects, are more convenient or are less expensive than any products that we may develop. Drugs resulting from our research and development efforts or from our joint efforts with collaboration partners therefore may not be commercially competitive with our competitors’ existing products or products under development.

We are aware of several companies focused on developing or marketing therapies for rare endocrine disorders. For our product candidates, the main competitors include:

Government Regulation

Product Approval Process

The clinical testing, manufacturing, labeling, storage, distribution, record keeping, advertising, promotion, import, export and marketing, among other things, of our product candidates are subject to extensive regulation by governmental authorities in the United States and other countries. The FDA under the Federal Food, Drug, and Cosmetic Act regulates pharmaceutical products in the United States. The steps required before a drug may be approved for marketing in the United States generally include:

The testing and approval process requires substantial time, effort and financial resources, and the receipt and timing of any approval is uncertain.

Preclinical studies include laboratory evaluations of the product candidate, as well as animal studies to assess the potential safety and efficacy of the product candidate. The results of the preclinical studies, together with manufacturing information, analytical data and a proposed clinical trial protocol, are submitted to the FDA as part of the IND, which must become effective before clinical trials may be commenced. The IND will become effective automatically 30 days after receipt by the FDA, unless the FDA raises concerns or questions about the conduct of the clinical trials as outlined in the IND prior to that time and places the IND on clinical hold. In this case, the IND sponsor and the FDA must resolve any outstanding concerns before clinical trials can proceed. A clinical hold may occur at any time during the life of an IND, due to safety concerns or non ‑compliance, and may affect one or more specific studies or all studies conducted under the IND.

Clinical trials involve the administration of the product candidates to healthy volunteers or patients with the disease to be treated under the supervision of a qualified principal investigator. Clinical trials are conducted under protocols detailing, among other things, the objectives of the clinical trial, the parameters to be used in monitoring safety, and the efficacy criteria to be evaluated. A protocol for each clinical trial and any subsequent protocol amendments must be submitted to the FDA as part of the IND. Further, each clinical trial must be reviewed and approved by an independent institutional review board, or IRB, either centrally or individually at each institution at which the clinical trial will be conducted. The IRB will consider, among other things, ethical factors, the safety of human subjects and the possible liability of the institution. Progress reports detailing the status of the clinical trials must be submitted to the FDA

annually. Sponsors must also report to the FDA serious and unexpected adverse reactions, any clinically important increase in the rate of a serious suspected adverse reaction over that listed in the protocol or investigation brochure, or any findings from other studies or animal or in vitro testing that suggest a significant risk in humans exposed to the drug. There are also requirements governing the reporting of ongoing clinical trials and clinical trial results to public registries.

Clinical trials are typically conducted in three sequential phases prior to approval, but the phases may overlap. These phases generally include the following:

Phase 4 clinical trials are conducted after approval to gain additional experience from the treatment of patients in the intended therapeutic indication and to document a clinical benefit in the case of drugs approved under accelerated approval regulations, or when otherwise requested by the FDA in the form of post ‑market requirements or commitments. Failure to promptly conduct any required Phase 4 clinical trials could result in withdrawal of approval.

Clinical trials are inherently uncertain and any phase may not be successfully completed. A clinical trial may be suspended or terminated by the FDA, IRB or sponsor at any time on various grounds, including a finding that the subjects or patients are being exposed to an unacceptable health risk. Additionally, some clinical trials are overseen by an independent group of qualified experts organized by the clinical trial sponsor, known as a data safety monitoring board or committee. This group provides ongoing oversight and safety reviews to determine whether or not a clinical trial may move forward at designated check points based on access to certain data from the clinical trial. We may also suspend or terminate a clinical trial based on evolving business objectives and/or competitive climate.

Sponsors have the opportunity to meet with the FDA at certain points during the development of a new drug to share information about the data gathered to date and for the FDA to provide advice on the next phase of development. These meetings may be held prior to the submission of an IND, at the end of Phase 2 and/or before an NDA is submitted. Meetings may be requested at other times as well.

The results of preclinical studies and clinical trials, including negative or ambiguous results as well as positive findings, together with detailed information on the manufacture, composition and quality of the product, proposed labeling and other relevant information are submitted to the FDA in the form of an NDA requesting approval to market the product. The NDA must be accompanied by a significant user fee payment. The FDA has substantial discretion in the approval process and may refuse to accept any application, for example if the NDA is not sufficiently complete, or decide that the data is insufficient for approval and require additional preclinical, clinical or other studies.

In addition, under the Pediatric Research Equity Act, or PREA, an NDA or supplement to an NDA must contain data to assess the safety and effectiveness of the drug for the claimed indications in all relevant pediatric subpopulations and to support dosing and administration for each pediatric subpopulation for which the product is safe and effective. The FDA may grant deferrals for submission of data or full or partial waivers. Unless otherwise required by regulation, PREA does not apply to any drug for an indication for which orphan drug designation has been granted. However, if only one indication for a product has orphan drug designation, a pediatric assessment may still be required for any applications to market that same product for the non ‑orphan indication(s).

Once the NDA submission has been submitted, the FDA has 60 days after submission of the NDA to conduct an initial review to determine whether it is sufficient to accept for filing. NDAs receive either a standard or priority review. Under the Prescription Drug User Fee Act, the FDA sets a goal date by which it plans to complete its review. For a standard review, this is typically 12 months from the date of submission of the NDA application. The review process is often extended by FDA requests for additional information or clarification. Before approving an NDA, the FDA will inspect the facilities at which the product is manufactured and will not approve the product unless the manufacturing facility complies with cGMPs and may also inspect clinical trial sites for integrity of data supporting safety and efficacy. The FDA may also convene an advisory committee of external experts to provide input on certain review issues relating to risk, benefit and interpretation of clinical trial data. The FDA is not bound by the recommendations of an advisory committee, but generally follows such recommendations in making its decisions. The FDA may delay approval of an NDA if applicable regulatory criteria are not satisfied and/or the FDA requires additional testing or information. The FDA may require post ‑marketing testing and surveillance to monitor safety or efficacy of a product.

After the FDA evaluates the NDA and conducts inspections of manufacturing facilities where the drug product and/or its API will be produced, it may issue an approval letter or a Complete Response Letter. An approval letter authorizes commercial marketing of the drug with specific prescribing information for specific indications. A Complete Response Letter generally outlines the deficiencies in the NDA submission and may require substantial additional clinical testing, such as an additional pivotal Phase 3 clinical trial(s), clinical data, and/or other significant, expensive and time consuming requirements related to clinical trials, preclinical studies or manufacturing. Even if such additional information is submitted, the FDA may ultimately decide that the NDA does not satisfy the criteria for approval.

The FDA may approve the NDA with a Risk Evaluation and Mitigation Strategy, or REMS, plan to mitigate risks, which could include medication guides, physician communication plans, or elements to assure safe use, such as restricted distribution methods, patient registries and other risk minimization tools. The FDA also may condition approval on, among other things, changes to proposed labeling, development of adequate controls and specifications, or a commitment to conduct one or more post ‑market studies or clinical trials. Such post ‑market testing may include Phase 4 clinical trials and surveillance to further assess and monitor the product’s safety and effectiveness after commercialization.

Orphan Drug Designation

Under the Orphan Drug Act of 1983, the FDA may grant orphan drug designation to a drug or biological product intended to treat an orphan disease or condition, which is a disease or condition that affects fewer than 200,000 individuals in the United States, or if it affects more than 200,000 individuals in the United States, there is no reasonable expectation that the cost of developing and making a drug product available in the United States for this type of disease or condition will be recovered from sales of the product. Orphan product designation must be requested before submitting an NDA. After the FDA grants orphan product designation, the identity of the therapeutic agent and its potential orphan use are disclosed publicly by the FDA. Orphan product designation does not convey any advantage in or shorten the duration of the regulatory review and approval process.

If a product that has orphan drug designation subsequently receives the first FDA approval for the disease or condition for which it has such designation, the product is entitled to orphan product exclusivity, which means that the FDA may not approve any other applications to market the same drug or biological product for the same indication for seven years, except in limited circumstances, such as a showing of clinical superiority to the product with orphan exclusivity. The designation of such drug also entitles a party to financial incentives, such as opportunities for grant funding towards clinical trial costs, tax advantages and user ‑fee waivers. Competitors, however, may receive approval of different products for the indication for which the orphan product has exclusivity or obtain approval for the same product but for a different indication for which the orphan product has exclusivity. Orphan product exclusivity also could block the approval of one of our products for seven years if a competitor obtains approval of the same drug or biological product as defined by the FDA or if our product candidate is determined to be contained within the competitor’s product for the same indication or disease. If a drug product designated as an orphan product receives regulatory approval for an indication broader than that for which it is designated, it may not be entitled to orphan product exclusivity. Orphan drug status in the European Union has similar but not identical benefits in that jurisdiction.

Post ‑Approval Requirements

Drugs manufactured or distributed pursuant to FDA approvals are subject to pervasive and continuing regulation by the FDA, including, among other things, requirements relating to recordkeeping, periodic reporting, product distribution, advertising and promotion, and reporting of adverse experiences with the product. After approval, most changes to the approved product, such as adding new indications or other labeling claims, are subject to prior FDA review and approval and may require additional clinical trials and NDA submissions. There also are continuing, annual user fee requirements for any marketed products and the establishments at which such products are manufactured, as well as new application fees for supplemental applications with clinical data.

In addition, drug manufacturers and other entities involved in the manufacture and distribution of approved drugs are required to register their establishments with the FDA and state agencies, and are subject to periodic unannounced inspections by the FDA and these state agencies for compliance with cGMP requirements. Changes to the manufacturing process are strictly regulated and often require prior FDA approval before being implemented. FDA regulations also require investigation and correction of any deviations from cGMP and impose reporting and documentation requirements upon the sponsor and any third ‑party manufacturers that the sponsor may decide to use. Accordingly, manufacturers must continue to expend time, money, and effort in the area of production and quality control to maintain cGMP compliance.

Once an approval is granted, the FDA may withdraw the approval if compliance with regulatory requirements and standards is not maintained, or if problems occur after the product reaches the market. Later discovery of previously unknown problems with a product, including adverse events of unanticipated severity or frequency, with manufacturing processes, or failure to comply with regulatory requirements, may result in revisions to the approved labeling to add new safety information, imposition of post ‑market studies or clinical trials to assess new safety risks, or imposition of distribution or other restrictions under a REMS program. Other potential consequences include, but are not limited to:

The FDA strictly regulates marketing, labeling, advertising and promotion of products that are placed on the market. Drugs may be promoted only for the approved indications and in accordance with the provisions of the approved label. The FDA and other agencies actively enforce the laws and regulations prohibiting the promotion of off ‑label uses, and a company that is found to have improperly promoted off ‑label uses may be subject to significant liability.

Moreover, the recently enacted federal Drug Supply Chain Security Act imposes new obligations on manufacturers of pharmaceutical products, among others, related to product tracking and tracing. Among the requirements of this new federal legislation, manufacturers will be required to provide certain information regarding the drug product to individuals and entities to which product ownership is transferred, label drug product with a product identifier, and keep certain records regarding the drug product. Further, under this new legislation, manufacturers will have drug product investigation, quarantine, disposition, and notification responsibilities related to counterfeit, diverted, stolen, and intentionally adulterated products, as well as products that are the subject of fraudulent transactions or which are otherwise unfit for distribution such that they would be reasonably likely to result in serious health consequences or death.

Foreign Regulation

In order to market any product outside of the United States, we would need to comply with numerous and varying regulatory requirements of other countries and jurisdictions regarding quality, safety and efficacy and governing, among other things, clinical trials, marketing authorization, commercial sales and distribution of our products. Whether or not we obtain FDA approval for a product, we would need to obtain the necessary approvals by the comparable foreign regulatory authorities before we can commence clinical trials or marketing of the product in foreign countries and jurisdictions. Although many of the issues discussed above with respect to the United States apply similarly in the context of the European Union, the approval process varies between countries and jurisdictions and can involve additional product testing and additional administrative review periods. The time required to obtain approval in other countries and jurisdictions might differ from and be longer than that required to obtain FDA approval. Regulatory approval in one country or jurisdiction does not ensure regulatory approval in another, but a failure or delay in obtaining regulatory approval in one country or jurisdiction may negatively impact the regulatory process in others.

Other Healthcare Laws

In addition to FDA restrictions on the marketing of pharmaceutical products, federal and state healthcare laws restrict certain business practices in the biopharmaceutical industry. Although we currently do not have any products on the market, we may be subject, and once our product candidates are approved and we begin commercialization, will be subject to additional healthcare laws and regulations enforced by the federal government and by authorities in the states and foreign jurisdictions in which we conduct our business. These laws include, but are not limited to, anti ‑kickback, false claims, data privacy and security, and transparency statutes and regulations.

The federal Anti ‑Kickback Statute prohibits, among other things, knowingly and willfully offering, paying, soliciting or receiving any remuneration, directly or indirectly, overtly or covertly, in cash or in kind, to induce, or in return for, purchasing, leasing, arranging for, ordering or recommending any good, facility, item or service for which payment is made, in whole or in part, under Medicare, Medicaid or any other federal healthcare programs. The term “remuneration” has been broadly interpreted to include anything of value, including for example, gifts, discounts, the furnishing of supplies or equipment, credit arrangements, payments of cash, waivers of payment, ownership interests and providing anything at less than its fair market value. The federal Anti ‑Kickback Statute has been interpreted to apply to arrangements between pharmaceutical manufacturers on the one hand, and prescribers, purchasers and formulary managers on the other. Although there are a number of statutory exceptions and regulatory safe harbors protecting certain common activities from prosecution, the exceptions and safe harbors are drawn narrowly, and our future practices may not in all cases meet all of the criteria for a statutory exception or safe harbor protection. Practices that involve remuneration that may be alleged to be intended to induce prescribing, purchases or recommendations may be subject to scrutiny if they do not qualify for an exception or safe harbor. Failure to meet all of the requirements of a particular applicable regulatory safe harbor does not make the conduct per se illegal under the federal Anti ‑Kickback Statute. Instead, the legality of the arrangement will be evaluated on a case ‑by ‑case basis based on a cumulative review of all of its facts and circumstances. Several courts have interpreted the statute’s intent requirement to mean that if any one purpose of an arrangement involving remuneration is to induce referrals of federal healthcare program covered business, the statute has been violated. Additionally, the Patient Protection and Affordable Care Act, as amended by the Health Care and Education Reconciliation Act, or collectively, PPACA, amended the intent requirement under the Anti ‑Kickback Statute and criminal healthcare fraud statutes (discussed below) such that a person or entity no longer needs to have actual knowledge of the statute or the specific intent to violate it in order to have committed a violation. In addition, 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 civil False Claims Act (discussed below). Due to the breadth of these federal and state anti ‑kickback laws, and the potential for additional legal or regulatory change in this area, it is possible that our current and future sales and marketing practices and/or our future relationships with physicians might be challenged under these laws, which could cause harm to us.

The civil monetary penalties statute imposes penalties against any person or entity who, among other things, is determined to have presented or caused to be presented a claim to a federal health program that the person knows or should know is for an item or service that was not provided as claimed or is false or fraudulent.

The federal false claims laws prohibit, among other things, any person or entity from knowingly presenting, or causing to be presented, a false or fraudulent claim for payment or approval to the federal government or knowingly making, using or causing to be made or used a false record or statement material to a false or fraudulent claim to the federal government. As a result of a modification made by the Fraud Enforcement and Recovery Act of 2009, a claim includes “any request or demand” for money or property presented to the U.S. government. Recently, several pharmaceutical and other healthcare companies have been prosecuted under these laws for, among other things, allegedly providing free product to customers with the expectation that the customers would bill federal programs for the product. Other companies have been prosecuted for causing false claims to be submitted because of the companies’ marketing of the product for unapproved, and thus non ‑covered, uses.

The Health Insurance Portability and Accountability Act of 1996, or HIPAA, created new federal criminal statutes that prohibit knowingly and willfully executing, or attempting to execute, a scheme to defraud or obtain, by means of false or fraudulent pretenses, representations, or promises, any of the money or property owned by, or under the custody or control of, any healthcare benefit program, including private third ‑party payors, and knowingly and willfully falsifying, concealing or covering up a material fact or making any materially false, fictitious or fraudulent statement in connection with the delivery of, or payment for, healthcare benefits, items or services.

In addition, we may be subject to data privacy and security regulation by both the federal government and the states in which we conduct our business. HIPAA, as amended by the Health Information Technology for Economic and Clinical Health Act, or HITECH, and its implementing regulations, imposes certain requirements relating to the privacy, security and transmission of individually identifiable health information. Among other things, HITECH makes HIPAA’s security standards directly applicable to business associates—independent contractors or agents of covered entities that receive or obtain protected health information in connection with providing a service on behalf of a covered entity. HITECH also created four new tiers of civil monetary penalties, and newly empowered state attorneys general with the authority to enforce HIPAA. In January 2013, the Office for Civil Rights of the U.S. Department of Health and Human Services issued the Final Omnibus Rule under HIPAA pursuant to HITECH that makes significant changes to the privacy, security, and breach notification requirements and penalties. The Final Omnibus Rule generally took effect in September 2013 and enhances certain privacy and security protections, and strengthens the government’s ability to enforce HIPAA. The Final Omnibus Rule also enhanced requirements for both covered entities and business associates regarding notification of breaches of unsecured protected health information. In addition, state laws govern the privacy and security of health information in certain circumstances, many of which differ from each other in significant ways. These state laws may not have the same effect and often are not preempted by HIPAA, thus complicating compliance efforts.

Additionally, PPACA also included the federal Physician Payments Sunshine Act, which requires certain manufacturers of drugs, devices, biologicals and medical supplies for which payment is available under Medicare, Medicaid or the Children’s Health Insurance Program (with certain exceptions) to report annually information related to certain payments or other transfers of value made or distributed to physicians and teaching hospitals, or to entities or individuals at the request of, or designated on behalf of, the physicians and teaching hospitals and to report annually certain ownership and investment interests held by physicians and their immediate family members. Failure to comply with required reporting requirements could subject applicable manufacturers and others to substantial civil money penalties.

Also, many states have similar healthcare statutes or regulations that apply to items and services reimbursed under Medicaid and other state programs, or, in several states, apply regardless of the payor. Certain states require pharmaceutical companies to implement a comprehensive compliance program that includes a limit or outright ban on expenditures for, or payments to, individual medical or health professionals and/or require pharmaceutical companies to track and report gifts and other payments made to physicians and other healthcare providers.

Because we intend to commercialize products that could be reimbursed under federal and other governmental healthcare programs, we plan to develop a comprehensive compliance program that establishes internal controls to facilitate adherence to the rules and healthcare program requirements. Although compliance programs and adherence thereto may mitigate the risk of violation of and subsequent investigation and prosecution for violations of the above laws, the risks cannot be entirely eliminated. If our operations are found to be in violation of any of the health care laws

or regulations described above or any other laws that apply to us, we may be subject to penalties, including potentially significant criminal, civil and/or administrative penalties, damages, fines, disgorgement, individual imprisonment, exclusion of products from reimbursement under government programs, contractual damages, reputational harm, administrative burdens, diminished profits and future earnings and/or the curtailment or restructuring of our operations, any of which could adversely affect our ability to operate our business and our results of operations. To the extent that any of our products will be sold in a foreign country, we may be subject to similar foreign laws and regulations, which may include, for instance, applicable post ‑marketing requirements, including safety surveillance, fraud and abuse laws, and implementation of corporate compliance programs and reporting of payments or transfers of value to healthcare professionals.

Pharmaceutical Coverage, Pricing and Reimbursement

In both domestic and foreign markets, our sales of any future approved products, if and when commercialized, will depend in part on the availability of coverage and adequate reimbursement from third ‑party payors. Third ‑party payors include government authorities, managed care providers, private health insurers and other organizations. Patients who are prescribed treatments for their conditions and providers performing the prescribed services generally rely on third ‑party payors to reimburse all or part of the associated healthcare costs. Patients are unlikely to use our products, if approved, unless coverage is provided and reimbursement is adequate to cover a significant portion of the cost of our products. Sales of our products will therefore depend substantially, both domestically and abroad, on the extent to which the costs of our products will be paid by third ‑party payors. These third ‑party payors are increasingly focused on containing healthcare costs by challenging the price and examining the cost ‑effectiveness of medical products and services.

In addition, significant uncertainty exists as to the coverage and reimbursement status of newly approved healthcare product candidates. The market for our product candidates for which we may receive regulatory approval will depend significantly on access to third ‑party payors’ drug formularies, or lists of medications for which third ‑party payors provide coverage and reimbursement. The industry competition to be included in such formularies often leads to downward pricing pressures on pharmaceutical companies. Also, third ‑party payors may refuse to include a particular branded drug in their formularies or otherwise restrict patient access to a branded drug when a less costly generic equivalent or other alternative is available. Furthermore, third ‑party payor reimbursement to providers for our product candidates may be subject to a bundled payment that also includes the procedure administering our products. To the extent there is no separate payment for our product candidates, there may be further uncertainty as to the adequacy of reimbursement amounts. Because each third ‑party payor individually approves coverage and reimbursement levels, obtaining coverage and adequate reimbursement is a time consuming, costly and sometimes unpredictable process. We may be required to provide scientific and clinical support for the use of any product to each third ‑party payor separately with no assurance that approval would be obtained, and we may need to conduct expensive pharmacoeconomic studies in order to demonstrate the cost ‑effectiveness and/or medical necessity of our products. This process could delay the market acceptance of any product and could have a negative effect on our future revenues and operating results. We cannot be certain that our product candidates will be considered cost ‑effective or medically necessary. Because coverage and reimbursement determinations are made on a payor ‑by ‑payor basis, obtaining acceptable coverage and reimbursement from one payor does not guarantee the Company will obtain similar acceptable coverage or reimbursement from another payor. A payor’s decision to provide coverage for a product does not imply that an adequate reimbursement rate will be approved. If we are unable to obtain coverage of, and adequate reimbursement and payment levels for, our product candidates from third ‑party payors, physicians may limit how much or under what circumstances they will prescribe or administer them and patients may decline to purchase them. This in turn could affect our ability to successfully commercialize our products and impact our profitability, results of operations, financial condition and future success.

Furthermore, in many foreign countries, particularly the countries of the European Union, the pricing of prescription drugs is subject to government control. In some non ‑U.S. jurisdictions, the proposed pricing for a drug must be approved before it may be lawfully marketed. The requirements governing drug pricing vary widely from country to country. For example, the European Union provides options for its member states to restrict the range of medicinal products for which their national health insurance systems provide reimbursement and to control the prices of medicinal products for human use. A member state may approve a specific price for the medicinal product or it may instead adopt a system of direct or indirect controls on the profitability of the company placing the medicinal product on the market. We

may face competition for our product candidates from lower ‑priced products in foreign countries that have placed price controls on pharmaceutical products. In addition, there may be importation of foreign products that compete with our own products, which could negatively impact our profitability.

Healthcare Reform

In the United States and foreign jurisdictions, there have been, and we expect there will continue to be, a number of legislative and regulatory changes to the healthcare system that could affect our future business and operations if and when we begin to directly commercialize our products.

In particular, there have been and continue to be a number of initiatives at the U.S. federal and state level that seek to reduce healthcare costs. Initiatives to reduce the federal deficit and to reform healthcare delivery are increasing cost ‑containment efforts. We anticipate that Congress, state legislatures and the private sector will continue to review and assess alternative controls on healthcare spending through limitations on the growth of private health insurance premiums and Medicare and Medicaid spending, the creation of large insurance purchasing groups, price controls on pharmaceuticals and other fundamental changes to the healthcare delivery system. Any proposed or actual changes could limit or eliminate our spending on development projects and affect our ultimate profitability.

In March 2010, PPACA was signed into law. PPACA has substantially changed the way healthcare is financed by both governmental and private insurers. PPACA, among other things: established an annual, nondeductible fee on any entity that manufactures or imports certain branded prescription drugs and biologic agents, apportioned among these entities according to their market share in certain government healthcare programs; revised the methodology by which rebates owed by manufacturers for covered outpatient drugs under the Medicaid Drug Rebate Program are calculated; increased the statutory minimum Medicaid rebates owed by most manufacturers under the Medicaid Drug Rebate Program; addressed a new methodology by which rebates owed by manufacturers under the Medicaid Drug Rebate Program are calculated for drugs that are inhaled, infused, instilled, implanted, or injected; extended the Medicaid Drug Rebate Program to prescriptions of individuals enrolled in Medicaid managed care organizations; required manufacturers to offer 50% point ‑of ‑sale discounts on negotiated prices of applicable brand drugs to eligible beneficiaries during their coverage gap period, as a condition for the manufacturer’s outpatient drugs to be covered under Medicare Part D; and implemented payment system reforms including a national pilot program on payment bundling to encourage hospitals, physicians and other providers to improve the coordination, quality and efficiency of certain healthcare services through bundled payment models.

In the future, there may continue to be additional proposals relating to the reform of the U.S. healthcare system, some of which could further limit the prices we will be able to charge for our product candidates, or the amounts of reimbursement available for our product candidates. If future legislation were to impose direct governmental price controls and access restrictions, it could have a significant adverse impact on our business. Managed care organizations, as well as Medicaid and other government agencies, continue to seek price discounts. Some states have implemented, and other states are considering, measures to reduce costs of the Medicaid program, and some states are considering implementing measures that would apply to broader segments of their populations that are not Medicaid ‑eligible. Due to the volatility in the current economic and market dynamics, we are unable to predict the impact of any unforeseen or unknown legislative, regulatory, payor or policy actions, which may include cost containment and healthcare reform measures. Such policy actions could have a material adverse impact on our profitability.

Properties and Facilities

We lease 14,743 square feet of office space at 900 Northbrook Drive, Suite 200, Trevose, Pennsylvania 19053 for research and development and administrative activities. We believe that our existing facility is adequate to meet our current needs, and that suitable additional alternative spaces will be available in the future on commercially reasonable terms. We also lease 3,173 square feet of offic e space in Radnor, Pennsylvania, which was subleased in September   2015.