Notes to Financial Statements

December 31, 2017

Organization and Nature of Operations.

RegeneRx Biopharmaceuticals, Inc. (“RegeneRx”, the “Company”, “We”, “Us”, “Our”), a Delaware corporation, was incorporated in 1982. We are focused on the discovery and development of novel molecules to accelerate tissue and organ repair. Our operations are confined to one business segment: the development and marketing of product candidates based on Thymosin Beta 4 (“Tß4”), an amino acid peptide.

Management Plans to Address Operating Conditions.

Our strategy is aimed at being capital efficient while leveraging our portfolio of clinical assets by seeking strategic relationships with organizations with clinical development capabilities including development capital. Currently, we have active partnerships in three major territories: the U.S., China and Pan Asia. Our partners have been moving forward and making progress in each territory. In each case, the cost of development is being borne by our partners with no financial obligation for RegeneRx. We still have significant clinical assets to develop, primarily RGN-352 (injectable formulation of Tß4 for cardiac and CNS disorders) in the U.S., Pan Asia, and Europe, and RGN-259 in the EU. Our goal is to wait until satisfactory results are obtained from the current ophthalmic clinical program in the U.S. before moving into the EU. This should allow us to obtain a higher value for the asset at that time. However, we intend to continue to develop RGN-352, our injectable systemic product candidate for cardiac and central nervous system indications, either by obtaining grants to fund a Phase 2a clinical trial in the cardiovascular or central nervous system fields or finding a suitable partner with the resources and capabilities to develop it as we have with RGN-259.

In 2004, we entered into a strategic partnership for development and marketing of RGN-137 and RGN-352 for specified fields of use in Europe and other contiguous countries with Sigma-Tau Group, which was subsequently acquired by Alfa Wassermann S.p.A., both Italian pharmaceutical companies. Pursuant to the terms of the license, we notified Alfa Wassermann that the license expired by its terms and we, therefore, reacquired rights to our Tß4-based products in the licensed territory. In August 2017, the Company amended the license agreement for RGN-137 held by GtreeBNT. Under the amendment, the Territory was expanded to include Europe, Canada, South Korea, Australia and Japan. Further, we now control the cardiovascular and neurovascular assets (RGN-352) in the EU and are able to consolidate them with similar assets in the U.S. and other territories in Asia to create a worldwide portfolio that we believe will be more attractive to multi-national pharmaceutical companies.

Since inception, and through December 31, 2017, we have an accumulated deficit of $105 million and we had cash and cash equivalents of $181,708 as of December 31, 2017. We anticipate incurring additional operating losses in the future as we continue to explore the potential clinical benefits of Tß4-based product candidates over multiple indications. We have entered into a series of strategic partnerships under licensing and joint venture agreements where our partners are responsible for advancing development of our product candidates by sponsoring multiple clinical trials. On June 27, 2016, we entered into a Securities Purchase Agreement (“SPA”) with an institutional investor pursuant to which we issued an aggregate of 5,147,059 shares of common stock and warrants to purchase 5,147,059 shares of common stock, which we refer to as the 2016 Offering. We received net proceeds of approximately $1,520,000 from the offering. In August 2017, we amended the RGN-137 License Agreement with GtreeBNT in exchange for a series of payments the last of which will be received in June 2018. On March 2, 2018, we entered into a warrant reprice and exercise and issuance agreement (the “Reprice Agreement”) with the holders of the warrants issued in the 2016 Offering. Under the terms of the Reprice Agreement, in consideration of the holders exercising in full all of the 2016 Offering warrants, the exercise price per share of the warrants was reduced to $0.20 per share. In addition, and as further consideration, we issued to the holders of the 2016 Offering warrants 3,860,294 new warrants with an exercise price of $0.2301 per share. We received gross proceeds of approximately $1,000,000 pursuant to the exercise and issued 5,147,059 of common stock. The amendment payments and warrant reprice proceeds plus our year end cash balance will fund planned operations into the first quarter of 2019. We will need to secure additional operating capital to continue operations beyond the first quarter of 2019 as well as substantial additional funds in order to significantly advance development of our unlicensed programs. Accordingly, we will continue to evaluate opportunities to raise additional capital and are in the process of exploring various alternatives, including, without limitation, a public or private placement of our securities, debt financing, corporate collaboration and licensing arrangements, or the sale of our Company or certain of our intellectual property rights.

These factors raise substantial doubt about our ability to continue as a going concern. The accompanying financial statements have been prepared assuming that we will continue as a going concern. This basis of accounting contemplates the recovery of our assets and the satisfaction of our liabilities in the normal course of business.

Although we intend to continue to seek additional financing or additional strategic partners, we may not be able to complete a financing or corporate transaction, either on favorable terms or at all. If we are unable to complete a financing or strategic transaction, we may not be able to continue as a going concern after our funds have been exhausted, and we could be required to significantly curtail or cease operations, file for bankruptcy or liquidate and dissolve. There can be no assurance that we will be able to obtain any sources of funding. The financial statements do not include any adjustments relating to the recoverability and classification of recorded asset amounts and classification of liabilities that might be necessary should we be forced to take any such actions.

In addition to our current operational requirements, we continually refine our operating strategy and evaluate alternative clinical uses of Tß4. However, substantial additional resources will be needed before we will be able to achieve sustained profitability. Consequently, we continually evaluate alternative sources of financing such as the sharing of development costs through strategic collaboration agreements. There can be no assurance that our financing efforts will be successful and, if we are not able to obtain sufficient levels of financing, we would delay certain clinical and/or research activities and our financial condition would be materially and adversely affected. Even if we are able to obtain sufficient funding, other factors including competition, dependence on third parties, uncertainty regarding patents, protection of proprietary rights, manufacturing of peptides, and technology obsolescence could have a significant impact on us and our operations.

To achieve profitability, we, and/or a partner, must successfully conduct pre-clinical studies and clinical trials, obtain required regulatory approvals and successfully manufacture and market those pharmaceuticals we wish to commercialize. The time required to reach profitability is highly uncertain, and there can be no assurance that we will be able to achieve sustained profitability, if at all.

Use of Estimates. The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (“U.S. GAAP”) requires management to make certain estimates and assumptions that affect the reported earnings, financial position and various disclosures. Critical accounting policies involved in applying our accounting policies are those that require management to make assumptions about matters that are highly uncertain at the time the accounting estimate was made and those for which different estimates reasonably could have been used for the current period. Critical accounting estimates are also those which are reasonably likely to change from period to period and would have a material impact on the presentation of our financial condition, changes in financial condition or results of operations. Our most critical accounting estimates relate to accounting policies for revenue recognition, clinical trial accruals, valuation of derivatives and share-based arrangements. Management bases its estimates on historical experience and on various other assumptions that it believes are reasonable under the circumstances. Actual results could differ from these estimates.

Cash and Cash Equivalents. Cash and cash equivalents consist of cash and highly-liquid investments with original maturities of three months or less when acquired and are stated at cost that approximates their fair market value.

Concentration of Credit Risk. Financial instruments, which potentially subject the Company to concentrations of credit risk, consist primarily of cash and cash equivalents. We limit our exposure to credit loss by placing our cash and cash equivalents with high quality financial institutions and, in accordance with our investment policy, in securities that are rated investment grade.

Property and Equipment. Property and equipment consists of office furniture and equipment and is stated at cost and depreciated over the estimated useful lives of the assets (generally two to five years) using the straight-line method. Expenditures for maintenance and repairs which do not significantly prolong the useful lives of the assets are charged to expense as incurred. Depreciation expense was $3,048 and $3,326 for the years ended December 31, 2017 and 2016, respectively.

Impairment of Long-lived Assets. When we record long-lived assets, our policy is to regularly perform reviews to determine if and when the carrying value of our long-lived assets becomes impaired. During the years ended December 31, 2017 and 2016, no impairment losses were recorded.

Convertible Notes with Detachable Warrants. In accordance with Accounting Standards Codification (ASC) 470-20, Debt with Conversion and Other Options , the proceeds received from convertible notes are allocated between the convertible notes and the detachable warrants based on the relative fair value of the convertible notes without the warrants and the warrants. The portion of the proceeds allocated to the warrants is recognized as additional paid-in capital and a debt discount. The debt discount related to warrants is accreted into interest expense through maturity of the notes.

Derivative Financial Instruments. Derivative financial instruments consist of financial instruments or other contracts that contain a notional amount and one or more underlying variables (e.g. interest rate, security price or other variable), which require no initial net investment and permit net settlement. Derivative financial instruments may be free-standing or embedded in other financial instruments. Further, derivative financial instruments are initially, and subsequently, measured at fair value and recorded as liabilities or, in rare instances, assets.

The Company does not use derivative financial instruments to hedge exposures to cash-flow, market or foreign-currency risks. However, the Company has issued financial instruments including warrants that are either (i) not afforded equity classification, (ii) embody risks not clearly and closely related to host contracts, or (iii) may be net-cash settled by the counterparty. In certain instances, these instruments are required to be carried as derivative liabilities, at fair value, in the Company’s financial statements.

The Company estimates the fair values of its derivative financials instrument using the Black-Scholes option pricing model because it embodies all of the requisite assumptions (including trading volatility, estimated terms and risk-free rates) necessary to fair value these instruments. Estimating fair values of derivative financial instruments requires the development of significant and subjective estimates that may, and are likely to, change over the duration of the instrument with related changes in internal and external market factors. In addition, option-based techniques are highly volatile and sensitive to changes in the trading market price of the Company’s common stock, which has a high-historical volatility. Since derivative financial instruments are initially and subsequently carried at fair values, the Company’s operating results reflect the volatility in these estimate and assumption changes in each reporting period.

Revenue Recognition. We recognize revenue in accordance with the authoritative guidance for revenue recognition. We recognize revenue when all of the following criteria are met: (i) persuasive evidence of an arrangement exists, (ii) delivery (or passage of title) has occurred or services have been rendered, (iii) the seller's price to the buyer is fixed or determinable, and (iv) collectability is reasonably assured. We also comply with the authoritative guidance for revenue recognition regarding arrangements with multiple deliverables. Multiple-element arrangements are analyzed to determine whether the deliverables, which may include a license together with performance obligations such as providing a clinical supply of product and steering committee services, can be separated or whether they must be accounted for as a single unit of accounting. Revenue associated with licensing agreements consists of non-refundable upfront license fees and milestone payments. Non-refundable upfront license fees received under license agreements, whereby continued performance or future obligations are considered inconsequential to the relevant license technology, are recognized as revenue upon delivery of the technology.

Whenever we determine that an arrangement should be accounted for as a single unit of accounting, we must determine the period over which the performance obligations will be performed, and revenue will be recognized. Revenue will be recognized using either a relative performance or straight-line method. We recognize revenue using the relative 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-efforts basis. Revenue recognized is limited to the lesser of the cumulative amount of payments received or the cumulative amount of revenue earned, as determined using the relative performance method, as of each reporting period.

If we cannot reasonably estimate the level of effort required to complete our performance obligations under an arrangement, the performance obligations are provided on a best-efforts basis and we can reasonably estimate when the performance obligation ceases or the remaining obligations become inconsequential and perfunctory, then the total payments under the arrangement, excluding royalties and payments contingent upon achievement of substantive milestones, would be recognized as revenue on a straight-line basis over the period we expect to complete our performance obligations. Revenue is limited to the lesser of the cumulative amount of payments received or the cumulative amount of revenue earned, as determined using the straight-line basis, as of the period ending date.

If we cannot reasonably estimate when our performance obligation either ceases or becomes inconsequential and perfunctory, then revenue is deferred until we can reasonably estimate when the performance obligation ceases or becomes inconsequential. Revenue is then recognized over the remaining estimated period of performance.

We recognize consideration that is contingent upon the achievement of a milestone in its entirety as revenue in the period in which the milestone is achieved only if the milestone is substantive in its entirety. A milestone is considered substantive when it meets all of the following criteria:

A milestone is defined as an event (i) that can only be achieved based in whole or in part on either the entity's performance or on the occurrence of a specific outcome resulting from the entity's performance, (ii) for which there is substantive uncertainty at the date the arrangement is entered into that the event will be achieved and (iii) that would result in additional payments being due to us.

Amounts received prior to satisfying the above revenue recognition criteria are recorded as deferred revenue in our accompanying balance sheets.

Variable Interest Entities

The Company has determined that the Joint Venture is a “variable interest entity”, since the total equity investment at risk is not sufficient to permit the Joint Venture to finance its activities without additional subordinated financial support. Further, because of GtreeBNT’s majority equity stake in the Joint Venture, voting control, control of the board of directors, and substantive management rights, and given that the Company does not have the power to direct the Joint Venture’s activities that most significantly impact its economic performance, the Company determined that it is not the primary beneficiary of the Joint Venture and therefore is not required to consolidate the Joint Venture. The Company reports its equity stake in the Joint Venture using the equity method of accounting because, while it does not control the Joint Venture, the Company can exert significant influence over the Joint Ventures activities by virtue of its board representation.

Because the Company is not obligated to fund the Joint Venture and has not provided any financial support and has no commitment to provide financial support in the future to the Joint Venture, the carrying value of its investment in the Joint Venture is zero. As a result, the Company is not recognizing its share (38.5%) of the Joint Venture’s operating losses and will not recognize any such losses until the Joint Venture produces net income (as opposed to net losses) and at that point the Company will reduce its share of the Joint Venture’s net income by its share of previously suspended net losses. As of December 31, 2017, because it has not provided any financial support, the Company has no financial exposure as a result of its variable interest in the Joint Venture.

Research and Development . Research and development (“R&D”) costs are expensed as incurred and include all of the wholly-allocable costs associated with our various clinical programs passed through to us by our outsourced vendors. Those costs include: manufacturing T b 4; formulation of T b 4 into the various product candidates; stability for both T b 4 and the various formulations; pre-clinical toxicology; safety and pharmacokinetic studies; clinical trial management; medical oversight; laboratory evaluations; statistical data analysis; regulatory compliance; quality assurance; and other related activities. R&D includes cash and non-cash compensation, employee benefits, travel and other miscellaneous costs of our internal R&D personnel, who are wholly dedicated to R&D efforts. R&D also includes a pro-ration of our common infrastructure costs for office space and communications.

Cost of Preclinical Studies and Clinical Trials. We accrue estimated costs for preclinical studies based on estimates of work performed. We estimate expenses incurred for clinical trials that are in process based on patient enrollment and based on clinical data collection and management. Costs based on clinical data collection and management are recognized based on estimates of unbilled goods and services received in the reporting period. We monitor the progress of the trials and their related activities and adjust the accruals accordingly. Adjustments to accruals are charged to expense in the period in which the facts that give rise to the adjustment become known. In the event of early termination of a clinical trial, we would accrue an amount based on estimates of the remaining non-cancelable obligations associated with winding down the clinical trial.

Patent Costs. Costs related to filing and pursuing patent applications are recognized as general and administrative expenses as incurred since recoverability of such expenditures is uncertain.

Income Taxes. Income taxes are accounted for under the asset and liability method. Deferred tax assets and liabilities are recognized for the estimated future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax basis and operating loss and tax credit carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. The Tax Cuts and Jobs Act, which was enacted on December 22, 2017, includes a number of changes to existing U.S. tax laws, most notably the reduction of the U.S. corporate income tax rate from 35% to 21%, beginning in 2018. We measure our deferred tax assets and liabilities using the enacted tax rates that we believe will apply in the years in which the temporary differences are expected to be recovered or paid. As a result, we remeasured our deferred tax assets and deferred tax liabilities as of December 31, 2017 to reflect the reduction in the enacted U.S. corporate income tax rate.

The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the periods in which those temporary differences become deductible. Management considers the scheduled reversal of deferred tax liabilities, projected future taxable income, and tax planning strategies in making that assessment. We recorded a full valuation allowance against all estimated net deferred tax assets at December 31, 2017 and 2016.

We recognize the effect of income tax positions only if those positions are more likely than not of being sustained. Recognized income tax positions are measured at the largest amount that is greater than 50% likely of being realized. Changes in recognition or measurement are reflected in the period in which the change in judgment occurs. Our policy for recording interest and penalties associated with audits is that penalties and interest expense are recorded in “Income taxes” in our statements of operations.

We have significant net operating loss carryforwards to potentially reduce future federal and state taxable income, and research and experimentation tax credit carryforwards available to potentially offset future federal and state income taxes. Use of our net operating loss and research and experimentation credit carryforwards may be limited due to changes in our ownership as defined within Section 382 of the Internal Revenue Code.

Net Income Per Common Share. Basic net income per common share for the years 2017 and 2016 is based on the weighted-average number of shares of common stock outstanding during the years. Diluted loss per share is based on the weighted-average number of shares of common stock outstanding during each period in which a loss is incurred potentially dilutive shares are excluded because the effect is antidilutive. In periods where there is net income, diluted income per share is based on the weighted-average number of shares of common stock outstanding plus dilutive securities with a purchase or conversion price below the per share price of our common stock on the last day of the reporting period. The potentially dilutive securities include 25,146,533 shares and 27,186,456 shares in 2017 and 2016, respectively, reserved for the conversion of convertible debt or exercise of outstanding options and warrants. For the years ended December 31, 2017 and 2016, 13,485,896 and 19,135,304 dilutive securities related to convertible debt, options, as well as warrants in 2016, were included in the diluted income per share calculation.

Share-Based Compensation. We measure share-based compensation expense based on the grant date fair value of the awards which is then recognized over the period which service is required to be provided. We estimate the grant date fair value using the Black-Scholes option-pricing model (“Black-Scholes”). We recognized $271,377 and $342,483 in share-based compensation expense for the years ended December 31, 2017 and 2016, respectively.

Fair Value of Financial Instruments. The carrying amounts of our financial instruments, as reflected in the accompanying balance sheets, approximate fair value. Financial instruments consist of cash and cash equivalents, accounts payable, and convertible debt and accrued interest. Because the convertible debt with an interest rate of 5% is with related parties, it was not practicable to estimate the effect of subjective risk factors, which might influence the value of the debt. The most significant of these risk factors include the lack of collateralization.

Recent Accounting Pronouncements.

In May 2014, the FASB issued Accounting Standards Update (“ASU”) 2014-09, Revenue from Contracts with Customers, which provides guidance for revenue recognition for contracts, superseding the previous revenue recognition requirements, along with most existing industry-specific guidance. The guidance requires an entity to review contracts in five steps: 1) identify the contract, 2) identify performance obligations, 3) determine the transaction price, 4) allocate the transaction price, and 5) recognize revenue. The new standard will result in enhanced disclosures regarding the nature, amount, timing and uncertainty of revenue arising from contracts with customers. In July 2015, the FASB delayed the effective date of this standard by one year. The new standard will be effective for the Company’s reporting year beginning on January 1, 2018. In March 2016, the FASB issued an accounting standard update to clarify the implementation guidance on principal versus agent considerations. In April 2016, the FASB issued an accounting standard update to clarify the identification of performance obligations and the licensing implementation guidance, while retaining the related principles for those areas. In May 2016, the FASB issued an accounting standard update to clarify guidance in certain areas and add some practical expedients to the guidance. The amendments in these 2016 updates do not change the core principle of the previously issued guidance in May 2014. The Company has completed its evaluation and assessment of the potential impacts of adopting this pronouncement on its financial statements and related disclosures. Based on this assessment, the Company will adopt the pronouncement under the modified retrospective method of transition in the first quarter of 2018. The Company does not expect adoption of the new standard will have a material effect on the overall timing or amount of revenue recognized when compared to current accounting standards. The impact to the Company of adopting the new revenue standard primarily relates to additional and expanded disclosures.

In November 2015, the FASB issued new guidance on the balance sheet classification of deferred taxes. To simplify presentation, the new guidance requires that all deferred tax assets and liabilities, along with any related valuation allowance, be classified as noncurrent on the balance sheet. The accounting standard became effective for public business entities for annual reporting periods (including interim reporting periods within those periods) beginning after December 15, 2016. The adoption of this guidance did not have a significant impact on our financial statements.

In January 2016, the FASB issued ASU 2016-01, Financial Instruments-Recognition and Measurement of Financial Assets and Financial Liabilities. The accounting standard primarily affects the accounting for equity investments, financial liabilities under the fair value option, and the presentation and disclosure requirements for financial instruments. In addition, it includes a clarification related to the valuation allowance assessment when recognizing deferred tax assets resulting from unrealized losses on available-for-sale debt securities. The accounting guidance is effective for annual reporting periods (including interim periods within those periods) beginning after December 15, 2017. Early adoption is permitted for the provision to record fair value changes for financial liabilities under the fair value option resulting from instrument-specific credit risk in other comprehensive income. The adoption of this guidance in 2017 did not have a significant impact on our financial statements.

In February 2016, the FASB issued ASU 2016-02, Leases, which supersedes ASC Topic 840, Leases, and creates a new topic, ASC Topic 842, Leases. ASU 2016-02 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. ASU 2016-02 also expands the required quantitative and qualitative disclosures surrounding leases. ASU 2016-02 is effective for the Company beginning January 1, 2019. Early adoption is permitted. The Company has determined that the adoption of ASU 2016-02 will currently not have a significant impact on its financial statements.

In May 2017, the FASB issued ASU 2017-09, Compensation-Stock Compensation (Topic 718) Scope of Modification Accounting. ASU 2017-09 provides clarification on when modification accounting should be used for changes to the terms or conditions of a share-based payment award. This ASU does not change the accounting for modifications but clarifies that modification accounting guidance should only be applied if there is a change to the value, vesting conditions, or award classification and would not be required if the changes are considered non-substantive. The Company is evaluating the impact of ASU 2017-09. The amendments of this ASU are effective for the Company in the first quarter of 2018, with early adoption permitted.

In July 2017, the FASB issued ASU 2017-11, Earnings Per Share (Topic 260); Distinguishing Liabilities from Equity (Topic 480); Derivatives and Hedging (Topic 815): (Part I) Accounting for Certain Financial Instruments with Down Round Features, (Part II) Replacement of the Indefinite Deferral for Mandatorily Redeemable Financial Instruments of Certain Nonpublic Entities and Certain Mandatorily Redeemable Noncontrolling Interests with a Scope Exception. Part I of this Update addresses the complexity of accounting for certain financial instruments with down round features. Down round features are features of certain equity-linked instruments (or embedded features) that result in the strike price being reduced on the basis of the pricing of future equity offerings. When determining whether certain financial instruments should be classified as liabilities or equity instruments, a down round feature no longer precludes equity classification when assessing whether the instrument is indexed to an entity’s own stock. Part II of this Update addresses the difficulty of navigating Topic 480, Distinguishing Liabilities from Equity, because of the existence of extensive pending content in the FASB Accounting Standards Codification®. For public business entities, the amendments in Part I of this Update are effective for fiscal years beginning after December 15, 2018. Early adoption is permitted for all entities, including adoption in an interim period. The Company is currently assessing the impact that this standard will have on its financial statements.

The authoritative guidance for fair value measurements defines fair value as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or the most advantageous market for the asset or 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:

As of December 31, 2017 and 2016, our only qualifying assets that required measurement under the foregoing fair value hierarchy were money market funds included in Cash and Cash Equivalents valued at $182,000 and $769,000, respectively, using Level 1 inputs. Our balance sheets reflect qualifying liabilities resulting from the price protection provision in the convertible promissory notes issued in March, July and September of 2013 and January 2014 (see Note 7). Our 2016 balance sheet also reflects qualifying liabilities related to the issuance of common stock and warrants in our 2016 Offering. Certain price protection anti-dilution features of the Securities Purchase Agreement and Warrants were determined to be embedded derivatives. An independent valuation expert calculated the fair value of the embedded derivatives using a customized Monte Carlo simulation model. These price protection anti-dilution features from the 2016 Offering lapsed in August 2017 and therefore our December 31, 2017 balance sheet no longer reflects these liabilities. We evaluated the derivative liability embedded in the series of convertible notes using the Black Scholes model to determine if an adjustment to the carrying value of the liability was required at December 31, 2017 using the following assumptions:

Given the conditions surrounding the trading of the Company’s equity securities, the Company values its derivative instruments related to embedded conversion features from the issuance of convertible debentures in accordance with the Level 3 guidelines.  For the year ended December 31, 2017, the following table reconciles the beginning and ending balances for financial instruments that are recognized at fair value in these financial statements.

We have an exclusive, worldwide licensing agreement with the National Institutes of Health (“NIH”) for all claims to T b 4 within their broadly-defined patent application. In exchange for this exclusive worldwide license, we must make certain royalty and milestone payments to the NIH. In 2013, we amended certain provisions of the exclusive license; we were permitted to credit amounts paid to prosecute or maintain the licensed patent rights during 2013 calendar year against the 2013 minimum annual royalty of $25,000. Beginning in 2014 the minimum annual royalty is $2,000. Additionally, we are obligated to pay the NIH a percentage of sales of qualifying product candidates, if any. There have been no such sales to date. No assurance can be given as to whether or when a patent will be issued, or as to any claims that may be included or excluded within the patent. We have also filed numerous additional patent applications covering various compositions, uses, formulations and other components of T b 4, as well as to novel peptides resulting from our research efforts. Some of these patents have issued, while many patent applications are still pending.

We have also entered into an agreement with a university under the terms of which we have received an exclusive license to technology and intellectual property.  The agreement, which is generally cancelable by us, provided for the payment of a license issue fee and/or minimum annual payments.  The initial license fee of $25,000 was paid in 2010 and no minimum fees were due for the year ended December 31, 2011. Beginning in 2012, minimum annual maintenance fees are $5,000 annually which was paid in 2012 but has not been paid since. In addition, the agreements provide for payments upon the achievement of certain milestones in product development.  The agreement also requires us to fund certain costs associated with the filing and prosecution of patent applications. In February 2013, this agreement was amended to include additional technology and intellectual property. The expanded license does not require payment of an initial license fee or additional annual maintenance fees but will be subject to payments upon the achievement of certain milestones for a product developed under the amended license of the additional technology and intellectual property.

All license fees are included in Research and Development in the accompanying statements of operations.

In 2012, we entered into a License Agreement (the “Agreement”) with Lee’s Pharmaceutical (HK) Limited, headquartered in Hong Kong, for the license of Thymosin Beta 4 in any pharmaceutical form, including our RGN-259, RGN-352 and RGN-137 product candidates, in China, Hong Kong, Macau and Taiwan. Under the License Agreement, we are eligible to receive milestone payments and royalties, ranging from low double digit to high single digit percentages of any commercial sales of the licensed products. Lee’s will pay for all developmental costs associated with each product candidate. We will provide Tß4 to Lee’s at no charge for a Phase 2 ophthalmic clinical trial and will provide Tß4 to Lee’s for all other developmental and clinical work at a price equal to our cost. We will also have the right to exclusively license any improvements made by Lee’s to RegeneRx’s products outside of the licensed territory. Lee’s paid us $200,000 upon signing of a term sheet in March 2012, and Lee’s paid us an additional $200,000 upon signing of the definitive license agreement. Lee’s is an affiliate of Sigma-Tau, which collectively with its affiliates, is our largest stockholder. As of December 31, 2017 and 2016, we have unearned revenue totaling $400,000 pursuant to this Agreement.

On March 7, 2014, we entered into license agreements with GtreeBNT Co., Ltd. The two Licensing Agreements are for the license of territorial rights to two of our Thymosin Beta 4-based products candidates, RGN-259 and RGN-137.

Under the License Agreement for RGN-259, our preservative-free eye drop product candidate, GtreeBNT will have the right to develop and commercialize RGN-259 in Asia (excluding China, Hong Kong, Taiwan, and Macau). The rights will be exclusive in Korea, Japan, Australia, New Zealand, Brunei, Cambodia, East Timor, Indonesia, Laos, Malaysia, Mongolia, Myanmar (Burma), Philippines, Singapore, Thailand, Vietnam, and Kazakhstan, and semi-exclusive in India, Pakistan, Bangladesh, Bhutan, Maldives, Nepal, Sri Lanka, Kyrgyzstan, Tajikistan, Turkmenistan and Uzbekistan, collectively, the Territory (the “259 Territory”). Under the 259 License Agreement we are eligible to receive aggregate potential milestone payments of up to $3.5 million. In addition, we are eligible to receive royalties of a low double digit percentage of any commercial sales of the licensed product sold by GtreeBNT in the 259 Territory.

Under the License Agreement for RGN-137, our topical dermal gel product candidate, GtreeBNT will have the exclusive right to develop and commercialize RGN-137 in the U.S. (“the 137 Territory”). Under the 137 License Agreement we are eligible to receive aggregate potential milestone payments of up to $3.5 million. In addition, we are eligible to receive royalties of a low double-digit percentage of any commercial sales of the Company’s licensed product sold by GtreeBNT in the 137 Territory. In August 2017, we amended the License Agreement for RGN-137 held by GtreeBNT. Under the amendment the Territory was expanded to include Europe, Canada, South Korea, Australia and Japan.

The Company has determined that the deliverables within the 2014 License Agreements, including a delivered element (providing the license) and an undelivered element (participation on the joint development committee), do not have stand-alone value and, as such, are treated as a single unit of accounting. As a result, the Company is recognizing the up-front milestone payments received pursuant to the amendment of the RGN-137 License Agreement as revenue ratably over the anticipated remaining life of the agreement, or 23 years. The joint development committee commenced activities 2014. The Company began recognizing the revenue for the amendment when received in 2017. Revenue will be recognized for future royalty payments as they are earned.

Each license agreement contains diligence provisions that require the initiation of certain clinical trials within certain time periods that, if not met, would result in the loss of rights or exclusivity in certain countries. GtreeBNT will pay for all developmental costs associated with each product candidate. We will provide a certain limited amount of Tß4 to GtreeBNT at no charge for initial clinical trials in Korea, Japan and Australia for RGN-259 and also for RGN-137 clinical trials and will provide Tß4 to GtreeBNT for all other developmental and clinical work on a cost plus basis. We have the right to exclusively license any improvements made by GtreeBNT to our products outside of the licensed territory on a royalty free basis. The two firms have created a joint development committee and continue to discuss the development of the licensed products and share information relating thereto. Both companies will also share all non-clinical and clinical data and other information related to development of the licensed product candidates.

On January 28, 2015, the Company entered into the Joint Venture Agreement with GtreeBNT, a shareholder in the Company. The Joint Venture Agreement provides for the creation of the Joint Venture, jointly owned by the Company and GtreeBNT, which is commercializing RGN-259 for treatment of dry eye and neurotrophic keratopathy in the United States and Canada.

GtreeBNT is solely responsible for funding all the product development and commercialization efforts of the Joint Venture. GtreeBNT made an initial contribution of $3 million in cash and received an initial equity stake of 51%. RegeneRx’s ownership interest in ReGenTree was reduced to 38.5% when the Clinical Study Report was filed for the Phase 2/3 dry eye clinical trial. Based on when, and if, certain additional development milestones are achieved in the U.S. with RGN-259, our equity ownership may be incrementally reduced to between 38.5% and 25%, with 25% being the final equity ownership upon approval of an NDA for DES in the U.S. In addition to our equity ownership, RegeneRx retains a royalty on net sales that varies between single and low double digits, depending on whether commercial sales are made by ReGenTree or a licensee. In the event ReGenTree is acquired or there is a change of control that occurs following achievement of an NDA, RegeneRx shall be entitled to a minimum of 40% of all proceeds paid or payable and will forgo any future royalties. The Company is not required or otherwise obligated to provide financial support to the Joint Venture.

The Joint Venture is responsible for executing all development and commercialization activities under the License Agreement, which activities will be directed by a joint development committee comprised of representatives of the Company and GtreeBNT. The License Agreement has a term that extends to the later of the expiration of the last patent covered by the License Agreement or 25 years from the first commercial sale under the License Agreement. The License Agreement may be earlier terminated if the Joint Venture fails to meet certain commercialization milestones, if either party breaches the License Agreement and fails to cure such breach, as a result of government action that limits the ability of the Joint Venture to commercialize the product, as a result of a challenge to a licensed patent, following termination of the license between the Company and certain agencies of the United States federal government, or upon the bankruptcy of either party.

Under the License Agreement, the Company received $1.0 million in up-front payments and is entitled to receive royalties on the Joint Venture’s future sales of products. On April 6, 2016, we received $250,000 from ReGenTree and executed an amendment to the license agreement on April 28, 2016. Under the amendment the territorial rights were expanded to include Canada. The Company is accounting for the License Agreement with the Joint Venture as a revenue arrangement. The Company has determined that the deliverables within the License Agreement, including a delivered element (providing the license) and an undelivered element (participation on the joint development committee), do not have stand-alone value and, as such, are treated as a single unit of accounting. As a result, the Company is recognizing the up-front milestone payments as revenue ratably over the anticipated remaining life of the agreement or 30 years. The joint development committee commenced activities as of April 1, 2015, therefore the Company began recognizing the revenue for the license fee in 2015. Revenue will be recognized for future royalty payments as they are earned.

Accrued expenses are comprised of the following:

In 2017 and 2016, the Company provided health and dental insurance to one employee under a group plan. No retirement plan was in place for 2017 or 2016.

2012 Convertible Note

On October 19, 2012, we completed a private placement of convertible notes (the “2012 Notes”) raising an aggregate of $300,000 in gross proceeds. The 2012 Notes were originally scheduled to mature after twenty-four (24) months from issuance. The 2012 Notes bear interest at a rate of five percent (5%) per annum and are convertible into shares of our common stock at a conversion price of fifteen cents ($0.15) per share (subject to adjustment as described in the 2012 Notes) at any time prior to repayment, at the election of the Investors. In the aggregate, the 2012 Notes are convertible into up to 2,000,000 shares of our common stock excluding interest.

At any time prior to maturity of the 2012 Notes, with the consent of the holders of a majority in interest of the 2012 Notes, we may prepay the outstanding principal amount of the 2012 Notes plus unpaid accrued interest without penalty. Upon the commission of any act of bankruptcy by the Company, the execution by the Company of a general assignment for the benefit of creditors, the filing by or against the Company of a petition in bankruptcy or any petition for relief under the federal bankruptcy act or the continuation of such petition without dismissal for a period of ninety (90) days or more, or the appointment of a receiver or trustee to take possession of the property or assets of the Company, the outstanding principal and all accrued interest on the 2012 Notes will accelerate and automatically become immediately due and payable.

In connection with the issuance of the 2012 Notes, we also issued warrants to each Investor. The warrants are exercisable for an aggregate of 400,000 shares of common stock with an exercise price of fifteen cents ($0.15) per share for a period of five years. The relative fair value of the warrants issued is $27,097, calculated using the Black-Scholes-Merton valuation model value of $0.07 with an expected and contractual life of 5 years, an assumed volatility of 74.36%, and a risk-free interest rate of 0.77%. The warrants were recorded as additional paid-in-capital and a discount on the 2012 Notes of $27,097.

The Investors, and the principal amount of their respective 2012 Notes and number of shares of common stock issuable upon exercise of their respective warrants, are as set forth below:

Sinaf S. A. is a direct wholly-owned subsidiary of Aptafin S.p.A., or Aptafin. Aptafin is owned directly by Paolo Cavazza and members of his family, who directly and indirectly own 38% of Sigma-Tau, our largest stockholder. The other Investors are members of our Board of Directors including Mr. Finkelstein who serves as our CEO and also the Chairman of our Board of Directors Dr. Goldstein who also serves as our Chief Scientific Officer.

During 2014, the Company amended the existing October 2012 convertible debt agreement with the lenders, solely to extend the due date of the principal and accrued interest until October 19, 2017.  No other terms of the original debt were amended or modified, and the lenders did not reduce the borrowed amount or change the interest rate of the debt.  The Company considered the restructuring a troubled debt restructuring as a result of the Company’s financial condition (see Note 1 discussion of “going concern”).  At the date of the amendment, all existing debt discounts and deferred financing fees were fully amortized and the amendment did not involve any additional fees paid to the lender or third parties; as such there was no gain recognized as a result of the amendment. The 2012 Notes matured, and the holders elected to convert the note balances of $300,000 and accrued interest of approximately $76,000 into common stock and also exercise the associated warrants in October 2017.

2013 Convertible Notes

On March 29, 2013, we completed a private placement of convertible notes (the “March 2013 Notes”) raising an aggregate of $225,000 in gross proceeds. The March 2013 Notes bear interest at a rate of five percent (5%) per annum, mature sixty (60) months after their date of issuance and are convertible into shares of our common stock at a conversion price of six cents ($0.06) per share (subject to adjustment as described in the March 2013 Notes) at any time prior to repayment, at the election of the investor. In the aggregate, the March 2013 Notes are initially convertible into up to 3,750,000 shares of our common stock.

At any time prior to maturity of the March 2013 Notes, with the consent of the holders of a majority in interest of the March 2013 Notes, we may prepay the outstanding principal amount of the March 2013 Notes plus unpaid accrued interest without penalty. Upon the commission of any act of bankruptcy by the Company, the execution by the Company of a general assignment for the benefit of creditors, the filing by or against the Company of a petition in bankruptcy or any petition for relief under the Federal bankruptcy act or the continuation of such petition without dismissal for a period of ninety (90) days or more, or the appointment of a receiver or trustee to take possession of the property or assets of the Company, the outstanding principal and all accrued interest on the March 2013 Notes will accelerate and automatically become immediately due and payable.

The investors in the offering included two directors of the Company, Dr. Goldstein and Joseph C. McNay, an outside director. The principal amounts of their respective March 2013 Notes are as set forth below:

The Company has evaluated the terms of the March 2013 Notes which contain a down round provision under which the conversion price could be decreased as a result of future equity offerings, as defined in the March 2013 Notes.  The adjustment would reduce the conversion price of the March 2013 Notes to be equivalent to that of the newly issued stock or stock-related instruments.  As a result, the Company concluded that the conversion feature represented an embedded conversion feature for accounting purposes and should be recognized as a derivative liability, requiring a mark-to-market adjustment at the end of each reporting period until the related March 2013 Notes have been settled. The bifurcated liability of $225,000 was recorded on the date of issuance which resulted in a residual debt value of $0.  The discount related to the embedded feature will be accreted as an addition to the debt through the maturity of the notes.

On July 5, 2013, we completed a private placement of convertible notes (the “July 2013 Notes”) raising an aggregate of $100,000 in gross proceeds. The July 2013 Notes bear interest at a rate of five percent (5%) per annum, mature sixty (60) months after their date of issuance and are convertible into shares of our common stock at a conversion price of six cents ($0.06) per share (subject to adjustment as described in the July 2013 Notes) at any time prior to repayment, at the election of the investor. In the aggregate, the July 2013 Notes are initially convertible into up to 1,666,667 shares of our common stock.

At any time prior to maturity of the July 2013 Notes, with the consent of the holders of a majority in interest of the July 2013 Notes, we may prepay the outstanding principal amount of the July 2013 Notes plus unpaid accrued interest without penalty. Upon the commission of any act of bankruptcy by the Company, the execution by the Company of a general assignment for the benefit of creditors, the filing by or against the Company of a petition in bankruptcy or any petition for relief under the Federal bankruptcy act or the continuation of such petition without dismissal for a period of ninety (90) days or more, or the appointment of a receiver or trustee to take possession of the property or assets of the Company, the outstanding principal and all accrued interest on the July 2013 Notes will accelerate and automatically become immediately due and payable.

The investors in the offering included four directors of the Company, Mr. Finkelstein, Dr. Goldstein, Mr. McNay and L. Thompson Bowles, previously an outside director. The principal amounts of their respective July 2013 Notes are as set forth below:

The Company has evaluated the terms of the July 2013 Notes which contain a down round provision under which the conversion price could be decreased as a result of future equity offerings, as defined in the July 2013 Notes.  The adjustment would reduce the conversion price of the July 2013 Notes to be equivalent to that of the newly issued stock or stock-related instruments.  As a result, the Company concluded that the conversion feature represented an embedded conversion feature for accounting purposes and should be recognized as a derivative liability, requiring a mark-to-market adjustment at the end of each reporting period until the related July 2013 Notes have been settled.  The bifurcated liability of $66,667 was recorded on the date of issuance which resulted in a residual debt value of $33,333. The discount related to the embedded feature will be accreted back to debt through the maturity of the notes.

On September 11, 2013, we completed a private placement of convertible notes raising an aggregate of $321,000 in gross proceeds (the “September 2013 Notes”).  The September 2013 Notes bear interest at a rate of five percent (5%) per annum, mature sixty (60) months after their date of issuance and are convertible into shares of our common stock at a conversion price of six cents ($0.06) per share (subject to adjustment as described in the September 2013 Notes) at any time prior to repayment, at the election of the investor.  In the aggregate, the September 2013 Notes are initially convertible into up to 5,350,000 shares of our common stock.  

At any time prior to maturity of the September 2013 Notes, with the consent of the holders of a majority in interest of the September 2013 Notes, we may prepay the outstanding principal amount of the September 2013 Notes plus unpaid accrued interest without penalty.  Upon the commission of any act of bankruptcy by the Company, the execution by the Company of a general assignment for the benefit of creditors, the filing by or against the Company of a petition in bankruptcy or any petition for relief under the federal bankruptcy act or the continuation of such petition without dismissal for a period of ninety (90) days or more, or the appointment of a receiver or trustee to take possession of the property or assets of the Company, the outstanding principal and all accrued interest on the September 2013 Notes will accelerate and automatically become immediately due and payable.

The investors in the offering included an affiliate and three current and one prior directors of the Company. The principal amounts of the affiliate and directors respective September 2013 Notes are as set forth below:

The Company has evaluated the terms of the September 2013 Notes which contain a down round provision under which the conversion price could be decreased as a result of future equity offerings, as defined in the September 2013 Notes.  The adjustment would reduce the conversion price of the September 2013 Notes to be equivalent to that of the newly issued stock or stock-related instruments.  As a result, the Company concluded that the conversion feature represented an embedded conversion feature for accounting purposes and should be recognized as a derivative liability, requiring a mark-to-market adjustment at the end of each reporting period until the related September 2013 Notes have been settled.  The bifurcated liability of $267,500 was recorded on the date of issuance which resulted in a residual debt value of $53,500. The discount related to the embedded feature will be accreted back to debt through the maturity of the notes.

2014 Convertible Notes

On January 7, 2014, we completed a private placement of convertible notes raising an aggregate of $55,000 in gross proceeds (the “January 2014 Notes”).   The January 2014 Notes bear interest at a rate of 5% per annum, mature 60 months after their date of issuance and are convertible into shares of our common stock at a conversion price of $0.06 per share (subject to adjustment as described in the January 2014 Notes) at any time prior to repayment, at the election of the Investor.  In the aggregate, the Notes are initially convertible into up to 916,667 shares of our common stock.  

At any time prior to maturity of the January 2014 Notes, with the consent of the holders of a majority in interest of the January 2014 Notes, we may prepay the outstanding principal amount of the January 2014 Notes plus unpaid accrued interest without penalty.  Upon the commission of any act of bankruptcy by the Company, the execution by the Company of a general assignment for the benefit of creditors, the filing by or against the Company of a petition in bankruptcy or any petition for relief under the federal bankruptcy act or the continuation of such petition without dismissal for a period of 90 days or more, or the appointment of a receiver or trustee to take possession of the property or assets of the Company, the outstanding principal and all accrued interest on the January 2014 Notes will accelerate and automatically become immediately due and payable.

The Investors in the offering included two current and one prior directors of the Company. The principal amounts of their respective Notes are as set forth below:

The Company has evaluated the terms of the January 2014 Notes which contain a down round provision under which the conversion price could be decreased as a result of future equity offerings, as defined in the January 2014 Notes.  The adjustment would reduce the conversion price of the January 2014 Notes to be equivalent to that of the newly issued stock or stock-related instruments.  As a result, the Company concluded that the conversion feature represented an embedded conversion feature for accounting purposes and should be recognized as a derivative liability, requiring a mark-to-market adjustment at the end of each reporting period until the related January 2014 Notes have been settled.  The bifurcated liability of $55,000 was recorded on the date of issuance which resulted in a residual debt value of $0. The discount related to the embedded feature will be accreted back to debt through the maturity of the notes.

2016 Offering

On June 27, 2016, we entered into a SPA with an institutional investor pursuant to which we agreed to sell, and the purchasers agreed to purchase, an aggregate of 5,147,059 shares of common stock and warrants to purchase 5,147,059 shares of common stock, which we refer to as the 2016 Offering, and in conjunction with the closing of such transaction we issued warrants to purchase 257,353 shares of common stock to our placement agent.

The SPA contains customary representations, warranties and covenants by the Company and the purchasers. In addition, the SPA provides that each purchaser has a right, subject to certain exceptions described in the agreement, to participate in future issuances of equity and debt securities by us for a period of 12 months following the effective date of this registration statement, and certain price protections that provide for the grant of additional shares of common stock if we sell shares for less than $0.34 per share (the purchase price in the 2016 Offering) during such 12-month period.

The Company evaluated various features of the SPA and Warrant Agreements issued in the offering. The SPA includes certain embedded features that were evaluated under the guidance in ASC 815, Derivatives and Hedging, including a “right” to receive additional shares of common shares for no further consideration, and is a form of non-standard “down-round” anti-dilution protection. The “right” was determined to be a “stand alone” derivative and also is considered an “embedded derivative”, the “right” was required to be bifurcated from the host instrument and accounted for as a mark-to-market derivative liability until it lapses.

The investor warrants contain “non-standard” adjustments (down-round anti-dilution protection) for 12 months following issuance. The Company determined that the warrants contain certain embedded features that have to be evaluated under the guidance in ASC 815 and determined that they are also “embedded derivatives” that require bifurcation and are to be accounted for as a mark-to-market derivative liability until it lapses.

As discussed in Note 3, our 2016 balance sheet also reflects qualifying liabilities related to the issuance of common stock and warrants in our 2016 Offering. Certain price protection anti-dilution features of the Securities Purchase Agreement and Warrants were determined to be embedded derivatives. An independent valuation expert calculated the fair value of the embedded derivatives using a customized Monte Carlo simulation model. These price protection anti-dilution features from the 2016 Offering lapsed in August 2017 and therefore our December 31, 2017 balance sheet no longer reflects these liabilities.

The outstanding balance of the derivative liability is as follows:

The change in fair value of the derivative liability is as follows:

The Company recorded interest expense and discount accretion as set forth below:

Common Stock. On October 19, 2017, the 2012 Convertible Notes matured, and the holders elected to convert the note balances and accrued interest into common stock and also exercise the associated warrants. As a result, we issued 2,906,944 shares of common stock. (see Note 7)

On June 27, 2016, we entered into a SPA with an institutional investor pursuant to which we agreed to sell, and the purchasers agreed to purchase, an aggregate of 5,147,059 shares of common stock and warrants to purchase 5,147,059 shares of common stock, which we refer to as the 2016 Offering, and in conjunction with the closing of such transaction we issued warrants to purchase 257,353 shares of common stock to our placement agent.

The SPA contains customary representations, warranties and covenants by the Company and the purchasers. In addition, the SPA provides that each purchaser has a right, subject to certain exceptions described in the agreement, to participate in future issuances of equity and debt securities by us for a period of 12 months following the effective date of this registration statement, and certain price protections that provide for the grant of additional shares of common stock if we sell shares for less than $0.34 per share (the purchase price in the 2016 Offering) during such 12-month period. Moreover, we agreed, subject to certain exceptions, not to sell securities for five months from the effective date of this registration statement.

The Company evaluated various features of the SPA and Warrant Agreements issued in the offering. The SPA includes certain embedded features that were evaluated under the guidance in ASC 815, Derivatives and Hedging, including a “right” to receive additional shares of common shares for no further consideration, and is a form of non-standard “down-round” anti-dilution protection. The “right” was determined to be a “stand alone” derivative and also is considered an “embedded derivative”, the “right” was required to be bifurcated from the host instrument and accounted for as a mark-to-market derivative liability until it lapses.

The investor warrants contain “non-standard” adjustments (down-round anti-dilution protection) for 12 months following issuance. The Company determined that the warrants contain certain embedded features that have to be evaluated under the guidance in ASC 815 and determined that they are also “embedded derivatives” that require bifurcation and are to be accounted for as a mark-to-market derivative liability until it lapses. These features lapsed in August 2017.

In connection with the offering, the Company incurred approximately $230,000 of direct and incremental issuance costs. The portion of these costs allocated to liability-classified derivative financial instruments, approximately $214,000, was expensed in 2016 and is reflected under general and administrative expense in the accompanying statement of operations. The remainder of the costs was allocated to the equity-classified common stock and recognized as a direct charge to additional paid-in capital.

The Company has concluded the following accounting treatment for the various instruments and embedded features:

The Company allocated the total proceeds from the 2016 Offering as follows:

An independent valuation expert calculated the fair value of the embedded derivatives using a complex, customized Monte Carlo simulation model. The model uses the risk neutral methodology adapted to value corporate securities. This model utilized subjective and theoretical assumptions that can materially affect fair values from period to period.

Registration Rights Agreements. In connection with the sale of certain equity instruments, we have entered into Registration Rights Agreements. Generally, these Agreements required us to file registration statements with the Securities and Exchange Commission to register common shares to permit re-sale of common shares previously sold under an exemption from registration or to register common shares that may be issued on exercise of outstanding warrants.

The Registration Rights Agreements usually require us to pay penalties for any failure or time delay in filing or maintaining the effectiveness of the required registration statements. These penalties are usually expressed as a fixed percentage, per month, of the original amount we received on issuance of the common shares, options or warrants. While to date we have not incurred any penalties under these agreements, if a penalty is determined to be probable we would recognize the amount as a contingent liability and not as a derivative instrument.

Share-Based Compensation. We recognized $271,377 and $342,483 in stock-based compensation expense for the years ended December 31, 2017 and 2016, respectively. We expect to recognize the compensation cost related to non-vested options as of December 31, 2017 of $313,000 over the weighted average remaining recognition period of 1.02 years.

Stock Option and Incentive Plans. On July 14, 2010, at our Annual Meeting of Stockholders, our stockholders approved the 2010 Equity Incentive Plan (the “2010 Plan”). The terms of the 2010 Plan provide for the discretionary grant of incentive stock options, nonstatutory stock options, stock appreciation rights, restricted stock awards, restricted stock unit awards, performance stock awards, other stock awards and performance cash awards to our employees, directors and consultants. At inception of the 2010 Plan, 5,000,000 shares of our common stock were reserved for future issuance. On September 10, 2014 at our Annual Meeting of Stockholders, our stockholders approved an increase in the number of shares available under the 2010 Equity Incentive Plan (the “2010 Plan”). The increase of 3,000,000 results in a total of 8,000,000 shares of common stock reserved for issuance.

We previously adopted an equity incentive plan, known as the Amended and Restated 2000 Stock Option and Incentive Plan (the “2000 Plan”). The 2000 Plan has a term of ten years that expired in December 2010. All outstanding option awards granted under the 2000 Plan will continue to be subject to the terms and conditions as set forth in the agreements evidencing such option awards and the terms of the 2000 Plan. Shares remaining available for issuance under the share reserve of the 2000 Plan will not be subject to future awards under the 2010 Plan, and shares subject to outstanding awards under the 2000 Plan that are terminated or forfeited in the future will not be subject to future awards under the 2010 Plan.

The following summarizes share-based compensation expense for the years ended December 31, 2017 and 2016, which was allocated as follows:

The following summarizes stock option activity for the years ended December 31, 2017 and 2016: