2. Summary of Significant Accounting Policies

Use of Estimates. The preparation of financial statements in accordance with accounting principles generally accepted in the U.S. involves the use of estimates and assumptions that affect the recorded amounts of assets and liabilities as of the date of the financial statements and the reported amounts of revenue and expenses and performance period for revenue recognition. Actual results may differ substantially from these estimates. Significant estimates include accrued expenses, the variables and method used to calculate stock-based compensation, derivative instruments and deferred taxes.

Reclassification. Certain prior year amounts have been reclassified to conform to current year presentation.

Concentration of Credit Risk. Financial instruments, which potentially subject us to concentrations of credit risk, consist of cash, cash equivalents, restricted cash and investments. We invest excess funds in accordance with a policy objective seeking to preserve both liquidity and safety of principal. We generally invest our excess funds in obligations of the U.S. government and its agencies, bank deposits, money market funds, and investment grade debt securities issued by corporations and financial institutions. We hold no collateral for these financial instruments. Concentration of credit risk with respect to our trade accounts receivable from our customers is primarily limited to drug wholesalers and retail pharmacies. Credit is extended to our customers based on an evaluation of a customer’s financial condition, and collateral is not required.

Cash, Cash Equivalents, and Investments. We consider all highly liquid, interest-bearing instruments with original maturity of three months or less when purchased to be cash equivalents. Cash and cash equivalents may include demand deposits held in banks and interest bearing money market funds. Our investment policy requires that commercial paper be rated A-1, P-1 or better by either Standard and Poor’s Corporation or Moody’s Investor Services or another nationally recognized agency and that securities of issuers with a long-term credit rating must be rated at least “A” (or equivalent). As of December 31, 2015, we held no investments.

Trade Accounts Receivable and Allowance for Doubtful Accounts. Trade accounts receivable are customer obligations due under normal trade terms. We review accounts receivable for uncollectible accounts and provide an allowance for doubtful accounts, which is based upon a review of outstanding receivables, historical collection information, and existing economic conditions. We consider trade accounts receivable past due for more than 90 days to be delinquent. We write off delinquent receivables against our allowance for doubtful accounts based on individual credit evaluations, the results of collection efforts, and specific circumstances of customers. We record recoveries of accounts previously written off when received as an increase in the allowance for doubtful accounts. To the extent data we use to calculate these estimates does not accurately reflect bad debts; adjustments to these reserves may be required. The allowance for doubtful accounts at December 31, 2015 and 2014 was $9 thousand $0, respectively.

Inventory. Inventories are stated at the lower of cost or market determined by the first in, first out method. The Company’s inventories are analyzed for slow moving and expired items no less frequently than quarterly and the valuation allowance is adjusted as required. Provisions are recorded for excess inventory which requires management’s judgment. Conditions impacting the realizability of inventory could cause actual write-offs to be materially different than provisions for excess inventory. As of December 31, 2015 and 2014 the Company’s inventory reserve was $691,000 and $0, respectively.

Impairment of Long-Lived Assets. In accordance with FASB ASC 360-10-35, we review our long-lived assets for impairment whenever events and circumstances indicate that the carrying value of an asset might not be recoverable. An impairment loss, measured as the amount by which the carrying value exceeds the fair value, is recognized if the carrying amount exceeds estimated undiscounted future cash flows.

Equipment and Leasehold Improvements. Equipment and leasehold improvements are stated at cost. Depreciation and amortization are provided on a straight-line basis over the estimated useful life of the asset. Leasehold improvements are amortized over the term of the lease or useful life of the improvements, whichever is shorter. Expenditures for maintenance and repairs that do not materially extend the useful lives of the respective assets are charged to expense as incurred. The cost and accumulated depreciation or amortization of assets retired or sold are removed from the respective accounts and any gain or loss is recognized in operations.

Deferred Lease Liability. Our leases provide for rental holidays and escalations of the minimum rent during the lease term, as well as additional rent based upon increases in real estate taxes and common maintenance charges. We record rent expense from leases with rental holidays and escalations using the straight-line method, thereby prorating the total rental commitment over the term of the lease. Under this method, the deferred lease liability represents the difference between the minimum cash rental payments and the rent expense computed on a straight-line basis.

Revenue Recognition. We recognize revenue in accordance with FASB ASC 605-10-S99, Revenue Recognition.

Oral Eligen B12™ Rx Product

We sell our Oral Eligen B12™ Rx product through drug wholesalers and retail pharmacies. We recognize revenue from prescription product sales, net of sales discounts, chargebacks, and rebates. We accept returns of unsalable product from customers within a return period of six months prior to and 12 months following product expiration. Our Oral Eligen B12™ Rx product currently has a shelf life of 24 months from the date of manufacture. Given the limited history of our Oral Eligen B12™ Rx product, we currently cannot reliably estimate expected returns of the prescription products at the time of shipment. Accordingly, we will defer recognition of revenue on prescription products until the right of return no longer exists, which occurs at the earlier of the time the Oral Eligen B12™ Rx product is dispensed through patient prescriptions or expiration of the right of return.

Collaborative Agreements and Feasibility Studies

Revenue earned from collaborative agreements and feasibility studies is comprised of reimbursed research and development costs, as well as upfront and research and development milestone payments. Deferred revenue represents payments received which are related to future performance. Revenue from feasibility studies, which are typically short term in nature, is recognized upon delivery of the study, provided that all other revenue recognition criteria are met.

Revenue from collaboration agreements are recognized using the proportional performance method provided that we can reasonably estimate the level of effort required to complete our performance obligations under an arrangement and such performance obligations are provided on a best effort basis and based on “expected payments.” Under the proportional performance method, periodic revenue related to nonrefundable cash payments is recognized as the percentage of actual effort expended to date as of that period to the total effort expected for all of our performance obligations under the arrangement. Actual effort is generally determined based upon actual hours incurred and include research and development (“R&D”) activities performed by us and time spent for Joint Steering Committee (“JSC”) activities. Total expected effort is generally based upon the total R&D and JSC hours incorporated into the project plan that is agreed to by both parties to the collaboration. Significant management judgments and estimates are required in determining the level of effort required under an arrangement and the period over which we expect to complete the related performance obligations. Estimates of the total expected effort included in each project plan are based on historical experience of similar efforts and expectations based on the knowledge of scientists for both the Company and its collaboration partners. The Company periodically reviews and updates the project plan for each collaborative agreement. The most recent reviews took place in January 2015. In the event that a change in estimate occurs, the change will be accounted for using the cumulative catch-up method which provides for an adjustment to revenue in the current period. Estimates of our level of effort may change in the future, resulting in a material change in the amount of revenue recognized in future periods.

Generally under collaboration arrangements, nonrefundable payments received during the period of performance may include time- or performance-based milestones. The proportion of actual performance to total expected performance is applied to the “expected payments” in determining periodic revenue. However, revenue is limited to the sum of (i) the amount of nonrefundable cash payments received and (ii) the payments that are contractually due but have not yet been paid.

With regard to revenue recognition in connection with development and license agreements that include multiple deliverables, Emisphere’s management reviews the relevant terms of the agreements and determines whether such deliverables should be accounted for as a single unit of accounting in accordance with FASB ASC 605-25, Multiple-Element Arrangements. If it is determined that a delivered license and Eligen^® Technology do not have stand-alone value and Emisphere does not have objective evidence of fair value of the undelivered Eligen^®Technology or the manufacturing value of all the undelivered items, then such deliverables are accounted for as a single unit of accounting and any payments received pursuant to such agreement, including any upfront or development milestone payments and any payments received for support services, will be deferred and included in deferred revenue within our balance sheet until such time as management can estimate when all of such deliverables will be delivered, if ever. Management reviews and reevaluates such conclusions as each item in the arrangement is delivered and circumstances of the development arrangement change. See Note 12 for more information about the Company’s accounting for revenue from specific development and license agreements.

Research and Development and Clinical Trial Expenses. Research and development expenses include costs directly attributable to the conduct of research and development programs, including the cost of salaries, payroll taxes, employee benefits, materials, supplies, maintenance of research equipment, costs related to research collaboration and licensing agreements, the cost of services provided by outside contractors, including services related to our clinical trials, clinical trial expenses, the full cost of manufacturing drug for use in research, pre-clinical development, and clinical trials. All costs associated with research and development are expensed as incurred.

Clinical research expenses represent obligations resulting from our contracts with various research organizations in connection with conducting clinical trials for our product candidates. We account for those expenses on an accrual basis according to the progress of the trial as measured by patient enrollment and the timing of the various aspects of the trial. Accruals are recorded in accordance with the following methodology: (i) the costs for period expenses, such as investigator meetings and initial start-up costs, are expensed as incurred based on management’s estimates, which are impacted by any change in the number of sites, number of patients and patient start dates; (ii) direct service costs, which are primarily ongoing monitoring costs, are recognized on a straight-line basis over the life of the contract; and (iii) principal investigator expenses that are directly associated with recruitment are recognized based on actual patient recruitment. All changes to the contract amounts due to change orders are analyzed and recognized in accordance with the above methodology. Change orders are triggered by changes in the scope, time to completion and the number of sites. During the course of a trial, we adjust our rate of clinical expense recognition if actual results differ from our estimates.

Income Taxes. Deferred tax liabilities and assets are recognized for the expected future tax consequences of events that have been included in the financial statements or tax returns. These liabilities and assets are determined based on differences between the financial reporting and tax basis of assets and liabilities measured using the enacted tax rates and laws that will be in effect when the differences are expected to reverse. A valuation allowance is recognized to reduce deferred tax assets to the amount that is more likely than not to be realized. In assessing the likelihood of realization, management considered estimates of future taxable income.

Stock-Based Employee Compensation. We recognize expense for our share-based compensation based on the fair value of the awards at the time they are granted. We estimate the value of stock option awards on the date of grant using the Black-Scholes model. The determination of the fair value of share-based payment awards on the date of grant is affected by our stock price as well as assumptions regarding a number of complex and subjective variables. These variables include our expected stock price volatility over the term of the awards, expected term, risk-free interest rate, expected dividends and expected forfeiture rates. The forfeiture rate is estimated using historical option cancellation information, adjusted for anticipated changes in expected exercise and employment termination behavior. Our outstanding awards do not contain market or performance conditions therefore we have elected to recognize share-based employee compensation expense on a straight-line basis over the requisite service period.

Advertising Expenses. We expense advertising costs as incurred. Advertising expense was approximately $0.7 million, $0.0 million and $0.0 million, during the years ended December 31, 2015, 2014 and 2013, respectively and is included in selling expenses on the Statement of Operations.

Fair Value of Financial Instruments. The carrying amounts for cash, cash equivalents, accounts payable, accounts receivable, and accrued expenses approximate fair value because of their short-term nature. At December 31, 2015, the carrying value of the Second Amended and Restated Convertible Notes, Second Amended and Restated Reimbursement Notes, Second Amended and Restated Bridge Notes and Loan Agreement was $61.2 million, which reflects its original cost plus accrued interest. See Note 7 for further discussion of the notes payable.

Derivative Instruments. Derivative instruments consist of common stock warrants, and certain instruments embedded in certain notes payable and related agreements. These financial instruments are recorded in the balance sheets at fair value as liabilities. Changes in fair value are recognized in earnings in the period of change.

Fair Value Measurements. The authoritative guidance for fair value measurements defines fair value as the price that would be received if an asset were to be sold or paid to transfer a liability in an orderly transaction between market participants on the measurement date. Market participants are buyers and sellers in the principal market that are (i) independent, (ii) knowledgeable, (iii) able to transact, and (iv) willing to transact. The guidance describes a fair value hierarchy based on the levels of inputs, of which the first two are considered observable and the last unobservable, that may be used to measure fair value which are the following:

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Level 1 — Quoted prices in active markets for identical assets or liabilities

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Level 2 — Inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or corroborated by observable market data for substantially the full term of the assets or liabilities

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Level 3 — Unobservable inputs that are supported by little or no market activity and that are significant to the value of the assets or liabilities

Future Impact of Recently Issued Accounting Standards

New Accounting Pronouncements

During May 2014, the FASB issued ASU No. 2014-09, “Revenue from Contracts with Customers” (“ASU 2014-09”), which requires entities to recognize revenue in a way that depicts the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled to in exchange for those goods or services. The new guidance also requires additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and changes in judgments and assets recognized from costs incurred to obtain or fulfill a contract. In July 2015, the FASB voted to delay the effective date of ASU 2014-09 by one year to the first quarter of 2018 to provide companies sufficient time to implement the standards. Early Adoption will be permitted, but not before the first quarter of 2017. Adoption can occur using one of two prescribed transition methods. The Company is currently evaluating the impact of the new standard.

During April 2015, the FASB issued ASU 2015-03, “Interest — Imputation of Interest” (“ASU 2015-03”), which requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. The recognition and measurement guidance for debt issuance costs are not affected by the amendments in this ASU. ASU 2015-03 is effective for annual and interim periods beginning on or after December 15, 2015. The adoption of ASU 2015-03 is not expected to have a material impact on our financial position, results of operations or cash flows.

During July 2015, the FASB issued ASU No. 2015-11, “Simplifying the Measurement of Inventory” (“ASU 2015-11”). ASU 2015-11 requires that inventory within the scope of the guidance be measured at the lower of cost and net realizable value. Inventory measured using last-in, first-out (LIFO) and retail inventory method (RIM) are excluded from this new guidance. This ASU replaces the concept of market with the single measurement of net realizable value and is intended to create efficiencies for preparers and more closely aligns U.S. GAAP with IFRS. This ASU is effective for public business entities in fiscal years beginning after December 15, 2016, including interim periods within those years. Prospective application is required and early adoption is permitted as of the beginning of an interim or annual reporting period. The adoption of ASU 2015-11 is not expected to have a material impact on our financial position, results of operations or cash flows.

During August 2014, the FASB issued ASU No. 2014-15, “Disclosure of Uncertainties About an Entity’s Ability to Continue as a Going Concern” (“ASU 2014-15”), which provides guidance on management’s responsibility in evaluating whether there is substantial doubt about an entity’s ability to continue as a going concern and to provide related footnote disclosures. ASU 2014-15 is effective for the annual period ending after December 15, 2016, and for annual and interim periods thereafter. The adoption of ASU 2014-15 is not expected to have a material impact on our financial position, results of operations or cash flows.

During January 2016, the FASB issued ASU No. 2016-01, “Financial Instruments — Overall: Recognition and Measurement of Financial Assets and Financial Liabilities (“ASU 2016-01”). The standard addresses certain aspects of recognition, measurement, presentation, and disclosure of financial instruments. This ASU is effective for fiscal years, and interim periods within those years, beginning after December 15, 2017. Early adoption is not permitted with the exception of certain provisions related to the presentation of other comprehensive income. The adoption of ASU 2016-01 is not expected to have a material impact on our financial position, results of operations or cash flows.

During February 2016, the FASB issued ASU No. 2016-02, “Leases” (“ASU 2016-02”). The standard requires lessees to recognize a lease liability and a lease asset for all leases, including operating leases, with a term greater than 12 months on its balance sheet. The update also expands the required quantitative and qualitative disclosures surrounding leases. ASU 2016-02 is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. The Company is currently evaluating the impact of the new standard.

Management does not believe there would have been a material effect on the accompanying financial statements had any other recently issued, but not yet effective, accounting standards been adopted in the current period.