NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

September 30, 2017

 

1 . Nature of Operations and Business Activities

Na t ure of Operations and Basis of Presentation

Sorrento Therapeutics, Inc. (NASDAQ: SRNE), together with its subsidiaries (collectively, the “Company”) is a clinical stage biotechnology company focused on delivering clinically meaningful therapies to patients and their families, globally. The Company’s primary focus is to transform cancer into a treatable or chronically manageable disease. The Company also has programs assessing the use of its technologies and products in auto-immune, inflammatory, neurodegenerative, infectious diseases and pain indications with high unmet medical needs.

At its core, the Company is an antibody-centric company and leverages its proprietary G-MAB™ library to identify, screen and validate fully human antibodies against high impact oncogenic targets and mutations, immune modulators and intracellular targets. To date, the Company has screened over 100 validated targets and generated a number of fully human antibodies against these targets which are at various stages of preclinical development. These include PD-1, PD-L1, CD38, CD123, CD47, c-MET, VEGFR2, CCR2, OX40, TIGIT and CD137 among others.

The Company’s vision is to leverage these antibodies in conjunction with proprietary targeted delivery modalities to generate the next generation of cancer therapeutics. These modalities include proprietary antibody drug conjugates (“ADCs”), bispecific approaches, as well as T-Cell Receptor (“TCR”)-like antibodies.  With LA Cell, Inc. (“LA Cell”), the Company’s joint venture with City of Hope, the Company’s objective is to become the global leader in the development of antibodies against intracellular targets such as STAT3, mutant KRAS, MYC, p53 and TAU. Additionally, the Company has acquired and is assessing the regulatory and strategic path forward for its portfolio of late stage biosimilar/biobetter antibodies based on Erbitux ® , Remicade ® , Xolair ® , and Simulect ® as these may represent nearer term commercial opportunities.

With each of its programs, the Company aims to tailor its therapies to treat specific stages in the evolution of cancer, from elimination, to equilibrium and escape. In addition, the Company’s objective is to focus on tumors that are resistant to current treatments and where the Company can design focused trials based on a genetic signature or biomarker to ensure patients have the best chance of a durable and significant response. The Company has several immuno-oncology programs that are in or near to entering the clinic.  These include cellular therapies, an oncolytic virus and a palliative care program targeted to treat intractable cancer pain.  Finally, as part of its global aim to provide a wide range of therapeutic products to meet underserved therapeutic markets, the Company has made investments and developed a separate pain focused franchise which the Company believes will serve to provide short term upside to its core thesis.

Through September 30, 2017 , the Company had devoted substantially all of its efforts to product development, raising capital and building infrastructure.  

The accompanying condensed consolidated financial statements include the accounts of the Company’s subsidiaries.  For consolidated entities where the Company owns or is exposed to less than 100% of the economics, the Company records net income (loss) attributable to noncontrolling interests in its condensed consolidated statements of operations equal to the percentage of the economic or ownership interest retained in such entities by the respective noncontrolling parties.  All intercompany balances and transactions have been eliminated in consolidation.

In the opinion of management, the unaudited financial information for the interim periods presented reflects all adjustments, which are only normal, recurring and necessary for a fair statement of financial position, results of operations and cash flows. These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2016 . Operating results for interim periods are not expected to be indicative of operating results for the Company’s 2017 fiscal year, or any subsequent period.

2. Liquidity and Going Concern

The accompanying condensed consolidated financial statements have been prepared assuming that the Company will continue as a going concern.  The Company has incurred substantial net losses and negative operating cash flows and anticipates that it will continue to do so for the foreseeable future as it continues to identify and invest in advancing product candidates, as well as expanding corporate infrastructure.  

As of September 30, 2017 , the Company had a $30.0 million outstanding principal balance on the long-term debt associated with the Loan and Security Agreement, dated November 23, 2016, by and among the Company and certain of its domestic subsidiaries (together with the Company, the “Borrowers”) and Hercules Capital, Inc. (“Hercules”), as amended (as so amended, the “Loan Agreement”).  The Loan Agreement contains covenants requiring the Company (i) to achieve certain fundraising requirements by certain dates and (ii) to maintain $20.0 million of U.S. unrestricted cash prior to achieving the corporate and fundraising milestones. The Company's public offering of common stock in April 2017 for net proceeds of $43.5 million satisfied the fundraising requirements and fundraising milestone.  As of September 30, 2017 , the Company had $38.3 million of cash and cash equivalents (includes approximately $6.0 million of foreign cash), of which $20.0 million is required to be maintained subject to the minimum cash requirement of the Loan Agreement.  Effective November 6, 2017, the Company and Hercules entered into an amendment to the Loan Agreement that reduced the minimum amount of U.S. unrestricted cash that the Company must maintain under the Loan Agreement to $8.0 million (see Note 18). The Company’s available cash and financing sources will not be sufficient to meet its current and anticipated cash requirements without additional fundraising.  Accordingly, these factors, among others, raise substantial doubt about the Company’s ability to continue as a going concern.

The Company has plans in place to obtain sufficient additional fundraising to fulfill its operating and capital requirements for the next 12 months and to maintain compliance with the Loan Agreement covenants. The Company’s plans include continuing to fund its operating losses and capital funding needs through public or private equity or debt financings, strategic collaborations, licensing arrangements, asset sales, government grants or other arrangements. Although management believes such plans, if executed as planned, should provide the Company sufficient financing to meet its needs, successful completion of such plans is dependent on factors outside of the Company’s control. As such, management cannot be certain that that such plans will be effectively implemented within one year after the date that the financial statements are issued.  

To the extent the Company is unable to execute on these plans, or is unable to amend the Loan Agreement to maintain compliance with the Loan Agreement covenants, the Company would be in default under the Loan Agreement and the outstanding loan balance may be declared immediately due and payable. Further, the provisions of the Loan Agreement allow for Hercules to exercise a material adverse event clause should the Company incur a material adverse event within the meaning provided by the Loan Agreement, which could include the going concern matters described herein. Should Hercules invoke the material adverse event clause, the outstanding loan balance may be declared immediately due and payable. Although reasonably possible, the Company believes that it is not probable that the material adverse event clause associated with the Loan Agreement will be exercised.

If the Company is unable to raise additional capital in sufficient amounts or on terms acceptable, the Company may have to significantly delay, scale back or discontinue the research, development or commercialization of one or more of its product candidates. The Company may also seek collaborators for one or more of its current or future product candidates at an earlier stage than otherwise would be desirable or on terms that are less favorable than might otherwise be available.

The condensed consolidated financial statements do not reflect any adjustments that might be necessary if the Company is unable to continue as a going concern.

Universal Shelf Registration

In November 2014, the Company filed a universal shelf registration statement on Form S-3 (the “Shelf Registration Statement”) with the SEC, which was declared effective by the SEC in December 2014. This Shelf Registration Statement provides the Company with the ability to offer up to $250 million of securities, including equity and other securities as described in the registration statement. Included in the 2014 shelf registration is a sales agreement prospectus covering the offering, issuance and sale by the Company of up to a maximum aggregate offering price of $50.0 million of the Company’s common stock that may be issued and sold under a sales agreement with MLV & Co. LLC (the “ATM Facility”). During the twelve months ended December 31, 2016 and the nine months ended September 30, 2017 , the Company sold approximately $3.6 million and $4.1 million of net proceeds from shares of common stock under the ATM Facility, respectively.  The Company can offer up to $41.9 million of additional shares of common stock under the ATM Facility, subject to certain limitations.  On April 19, 2017, the Company completed a public offering of $47.5 million shares of common stock pursuant to the Shelf Registration Statement for net proceeds of approximately $43.5 million .

Pursuant to the Shelf Registration Statement, the Company may offer additional securities from time to time and through one or more methods of distribution, subject to market conditions and the Company’s capital needs. Specific terms and prices will be determined at the time of each offering under a separate prospectus supplement, which will be filed with the SEC at the time of any offering. However, the Company cannot be sure that such additional funds will be available on reasonable terms, or at all.

2016 Private Investment in Public Entity Financing

On April 3, 2016, the Company entered into a Securities Purchase Agreement (the “ABG Purchase Agreement”) with ABG SRNE Limited and Ally Bridge LB Healthcare Master Fund Limited (collectively, “Ally Bridge”), pursuant to which, among other things, the Company agreed to issue and sell to Ally Bridge and other purchasers designated by Ally Bridge (collectively, the “ABG Purchasers”), in a private placement transaction (the “ABG Private Placement”), up to $50.0 million in shares of the Company’s common stock and warrants to purchase shares of common stock. Upon the closing of the ABG Private Placement, the Company issued to the ABG Purchasers (1) an aggregate of 9,009,005 shares (the “ABG Shares”) of common stock,   and (2) warrants to purchase an aggregate of 2,702,700 shares of common stock (each, an “ABG Warrant”).   Each ABG Warrant had an exercise price of $8.50 per share, was immediately exercisable upon issuance, had a term of three years and was exercisable on a cash or cashless exercise basis. 

Under the terms of the ABG Purchase Agreement, the Company was obligated to prepare and file with the SEC, within 30 days of the closing date of the ABG Private Placement, a registration statement to register for resale the ABG Shares and the shares of common stock issuable upon exercise of each ABG Warrant (the “ABG Warrant Shares”), and may be required to effect certain registrations to register for resale the ABG Shares and the ABG Warrant Shares in connection with certain “piggy-back” registration rights granted to the ABG Purchasers.

On April 3, 2016, the Company also entered into a Securities Purchase Agreement (collectively, the “Additional Purchase Agreements”) with each of Beijing Shijilongxin Investment Co., Ltd. ( “Beijing Shijilongxin”), FREJOY Investment Management Co., Ltd. (“Frejoy”) and Yuhan Corporation (“Yuhan”), pursuant to which, among other things, the Company agreed to issue and sell, in separate private placement transactions: (1) to Beijing Shijilongxin, 8,108,108 shares of common stock, and a warrant to purchase 1,176,471 shares of common stock, for an aggregate purchase price of $45.0 million ; (2)to Frejoy, 8,108,108 shares of common stock, and a warrant to purchase 1,176,471 shares of common stock, for an aggregate purchase price of $45.0 million ; and (3)to Yuhan, 1,801,802 shares of common stock, and a warrant to purchase 235,294 shares of common stock, for an aggregate purchase price of $10.0 million . The warrants issued pursuant to each of the Additional Purchase Agreements (collectively, the “Additional Warrants” and, together with each ABG Warrant, the “Warrants”) had an exercise price of $8.50 per share, were immediately exercisable upon issuance, had a term of three years and were exercisable on a cash or cashless exercise basis.

Under the terms of the Additional Purchase Agreements, each of Beijing Shijilongxin, Frejoy and Yuhan had the right to demand, at any time beginning six months after the closing of the transactions contemplated by the applicable Additional Purchase Agreement, that the Company prepare and file with the SEC a registration statement to register for resale such investor’s shares of common stock purchased pursuant to the applicable Additional Purchase Agreement and the shares of common stock issuable upon exercise of such investor’s Additional Warrant. In addition, the Company may be required to effect certain registrations to register for resale such shares in connection with certain “piggy-back” registration rights granted to Beijing Shijilongxin, Frejoy and Yuhan.

On May 2, 2016, the Company closed its private placement of common stock and warrants with Yuhan for gross proceeds of $10.0 million .  Yuhan purchased 1,801,802 shares of common stock at $5.55 per share and a warrant to purchase 235,294 shares of common stock.  The warrant was exercisable for three years at an exercise price of $8.50 per share.

Between May 31, 2016 and June 7, 2016, the Company closed on the remainder of the $150.0 million financing with the ABG Purchasers, Beijing Shijilongxin, and Frejoy. The ABG Purchasers led the financing and, together with Beijing Shijilongxin and Frejoy, collectively purchased  25,225,221 shares of common stock at  $5.55  per share, and warrants to purchase 5,055,642 shares of common stock for total cash consideration of  $86.5 million and secured promissory notes (the “Notes”) in an aggregate principal amount of $53.5 million .

On December 31, 2016, the Company entered into Warrant and Note Cancellation and Share Forfeiture Agreements (the “Cancellation and Forfeiture Agreements”) with certain investors (the “Investors”) that held an aggregate of 7,838,259 shares of common stock and certain of the Warrants granting the right to purchase an aggregate of 1,137,316 shares of common stock.  Pursuant to the Cancellation and Forfeiture Agreements, effective December 31, 2016, the Warrants held by the Investors and the Notes, of which $43.5 million was then outstanding, were cancelled and the shares of common stock held by the Investors were forfeited and returned to the Company.

If the Company raises additional funds by issuing equity securities, substantial dilution to existing stockholders would result. If the Company raises additional funds by incurring debt financing, the terms of the debt may involve significant cash payment obligations as well as covenants and specific financial ratios that may restrict the Company’s ability to operate its business.

3. Significant Accounting Policies

Use of Estimates

The preparation of consolidated financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of expenses during the reporting period.  Management believes that these estimates are reasonable; however, actual results may differ from these estimates.

Cash and Cash Equivalents

The Company considers all highly liquid investments purchased with original maturities of three months or less to be cash equivalents. The Company minimizes its credit risk associated with cash and cash equivalents by periodically evaluating the credit quality of its primary financial institution. The balance at times may exceed federally insured limits. The Company has not experienced any losses on such accounts.

Fair Value of Financial Instruments

The Company follows accounting guidance on fair value measurements for financial instruments measured on a recurring basis, as well as for certain assets and liabilities that are initially recorded at their estimated fair values. Fair value is defined as the exit price, or the amount that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The Company uses the following three-level hierarchy that maximizes the use of observable inputs and minimizes the use of unobservable inputs to value its financial instruments:

Financial instruments measured at fair value are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. The Company’s assessment of the significance of a particular input to the fair value measurement in its entirety requires it to make judgments and consider factors specific to the asset or liability. The use of different assumptions and/or estimation methodologies may have a material effect on estimated fair values. Accordingly, the fair value estimates disclosed or initial amounts recorded may not be indicative of the amount that the Company or holders of the instruments could realize in a current market exchange.

The carrying amounts of cash equivalents and marketable securities approximate their fair value based upon quoted market prices. Certain of the Company’s financial instruments are not measured at fair value on a recurring basis, but are recorded at amounts that approximate their fair value due to their liquid or short-term nature, such as cash, accounts receivable and payable, and other financial instruments in current assets or current liabilities.

Marketable Securities

Marketable securities are designated either as trading or available-for-sale securities and are accounted for at fair value. Marketable securities are classified as short-term or long-term based on the nature of the securities and their availability to meet current operating requirements. Marketable securities that are readily available for use in current operations and are classified as short-term available-for-sale securities are reported as a component of current assets in the accompanying condensed consolidated balance sheets. Marketable securities that are not trading securities and are not considered available for use in current operations are classified as long-term available-for-sale securities and are reported as a component of long-term assets in the accompanying condensed consolidated balance sheets.

Securities that are classified as trading are carried at fair value, with changes to fair value reported as a component of income. Securities that are classified as available-for-sale are carried at fair value, with temporary unrealized gains and losses reported as a component of stockholders' equity until their disposition. The cost of securities sold is based on the specific identification method.

All of the Company’s marketable securities are subject to a periodic impairment review. The Company recognizes an impairment charge when a decline in the fair value of its investments below the cost basis is judged to be other-than-temporary.  For the three and nine months ended September 30, 2017 and 2016 , no other-than-temporary impairment charges were recorded.  

Grants and Accounts Receivable

Grants receivable at September 30, 2017 and December 31, 2016 represent amounts due under several federal contracts with the National Institute of Allergy and Infectious Diseases (“NIAID”), a division of the National Institutes of Health (“NIH”). The Company considers the grants receivable to be fully collectible; accordingly, no allowance for doubtful amounts has been established. If amounts become uncollectible, they are charged to operations.

Accounts receivable at September 30, 2017 and December 31, 2016 consist of trade receivables from sales and services provided to certain customers, which are generally unsecured and due within 30 days. Estimated credit losses related to trade accounts receivable are recorded as general and administrative expenses and as an allowance for doubtful accounts within grants and accounts receivable, net. The Company reviews reserves and makes adjustments based on historical experience and known collectability issues and disputes. When internal collection efforts on accounts have been exhausted, the accounts are written off by reducing the allowance for doubtful accounts. As of each of September 30, 2017 and December 31, 2016 , the allowance for doubtful accounts was $20 thousand and $26 thousand , respectively.  

Property and Equipment

Property and equipment are carried at cost less accumulated depreciation. Depreciation of property and equipment is computed using the straight-line method over the estimated useful lives of the assets, which are generally three to five years . Leasehold improvements are amortized over the lesser of the life of the lease or the life of the asset. Repairs and maintenance are charged to expense as incurred.

Acquisitions and Intangibles

The Company has engaged in business combination activity. The accounting for business combinations requires management to make judgments and estimates of the fair value of assets acquired, including the identification and valuation of intangible assets, as well as liabilities assumed. Such judgments and estimates directly impact the amount of goodwill recognized in connection with each acquisition, as goodwill presents the excess of the purchase price of an acquired business over the fair value of its net tangible and identifiable intangible assets.

During the first quarter of 2017 , the Company identified an error in the valuation of acquisition consideration associated with the Scilex Pharmaceuticals Inc. (“Scilex”) acquisition, primarily related to the acquisition consideration payable, resulting in an overstatement of acquisition consideration payable of $6.5 million , and a corresponding overstatement of intangible assets of $6.7 million , goodwill of $ 4.6 million , deferred income tax liability of $2.8 million , additional paid-in capital of $0.6 million , and noncontrolling interest of $1.4 million as of December 31, 2016 . The Company evaluated the materiality of this misstatement from quantitative and qualitative perspectives, and concluded that it was immaterial to the prior periods. Consequently, the Company corrected this error by recording the adjustment in the Company’s condensed consolidated balance sheet in the quarter ended March 31, 2017.

Goodwill and Other Long-Lived Assets

Goodwill, which has an indefinite useful life, represents the excess of cost over fair value of net assets acquired. Goodwill is reviewed for impairment at least annually during the fourth quarter, or more frequently if events occur indicating the potential for impairment. During its goodwill impairment review, the Company may assess qualitative factors to determine whether it is more likely than not that the fair value of its reporting unit is less than its carrying amount, including goodwill. The qualitative factors include, but are not limited to, macroeconomic conditions, industry and market considerations, and the overall financial performance of the Company. If, after assessing the totality of these qualitative factors, the Company determines that it is not more likely than not that the fair value of its reporting unit is less than its carrying amount, then no additional assessment is deemed necessary. Otherwise, the Company proceeds to perform the two-step test for goodwill impairment. The first step involves comparing the estimated fair value of the reporting unit with its carrying value, including goodwill. If the carrying amount of the reporting unit exceeds its fair value, the Company performs the second step of the goodwill impairment test to determine the amount of loss, which involves comparing the implied fair value of the goodwill to the carrying value of the goodwill. The Company may also elect to bypass the qualitative assessment in a period and elect to proceed to perform the first step of the goodwill impairment test. The Company performed its annual assessment for goodwill impairment in the fourth quarter of 2016 , noting no impairment. There have not been any triggering events indicating the potential for impairment through September 30, 2017 .

The Company evaluates its long-lived and intangible assets with definite lives, such as property and equipment, acquired technology, customer relationships, patent and license rights, for impairment by considering competition by products prescribed for the same indication, the likelihood and estimated future entry of non-generic and generic competition with the same or similar indication and other related factors. The factors that drive the estimate of useful life are often uncertain and are

reviewed on a periodic basis or when events occur that warrant review. Recoverability is measured by comparison of the assets’ book value to future net undiscounted cash flows that the assets are expected to generate. There have not been any impairment losses of long-lived assets through September 30, 2017 .

Acquisition Consideration Payable - Gain on Contingent Liabilities

Acquisition consideration payable relates to the Company’s acquisition of businesses and various other assets and is recorded on the Company’s condensed consolidated balance sheets at fair value and is re-measured at each balance sheet date until such contingent liabilities have been settled, with changes in fair value recorded as gain on contingent liabilities. The Company estimates the fair value of contingent consideration based on level 3 inputs primarily driven by the probability of achieving certain financing or operating related milestones.  

The condensed consolidated statements of operations and comprehensive income (loss) for the three and nine months ended September 30, 2016 and stockholders’ equity and of cash flows for the nine months ended September 30, 2016 have been restated to correct for the effects of an immaterial error in the interim periods related to the re-measurement of acquisition consideration payable. As a result of the restatement, an adjustment of $1.7 million and $6.2 million to gain on contingent liabilities and an adjustment of $0.2 million and $0.3 million to research and development expense have been reflected in operating costs and expenses in the condensed consolidated statements of operations for the three and nine months ended September 30, 2016, respectively.  This adjustment includes a gain of $991 thousand that relates to 2015 but was recognized in the three months ended March 31, 2016, thus is included in the condensed consolidated statement of operations for the nine months ended September 30, 2016.  As a result of this adjustment, the financial results for the three months ended September 30, 2016 reflect the impact of the adjustment which resulted in a decrease in operating costs and expenses from $16.0 million to $14.5 million , an increase in net income attributable to the Company from $14.4 million to $15.9 million , and an increase in net income per share from $0.22 to $0.24 for the quarter ended September 30, 2016. The financial results for the nine months ended September 30, 2016 reflect the impact of the adjustment, which resulted in a decrease in operating costs and expenses from $89.0 million to $83.1 million , a decrease in net loss attributable to the Company from $48.9 million to $43.1 million , and a decrease in net loss per share from $(1.03) to ($0.91) for the nine months ended September 30, 2016.

Derivative Liability

Derivative liabilities are recorded on the Company’s condensed consolidated balance sheets at their fair value on the date of issuance and are revalued on each balance sheet date until such instruments are exercised or expire, with changes in the fair value between reporting periods recorded as other income or expense.  The Company estimates the fair value of derivative liabilities using the Black-Scholes option pricing model.

Investments in Other Entities

The Company holds a portfolio of investments in equity securities that are accounted for under either the equity method or cost method. Investments in entities over which the Company has significant influence but not a controlling interest are accounted for using the equity method, with the Company’s share of earnings or losses reported in loss on equity investments.

The Company’s cost method investments are included in cost method investments on the condensed consolidated balance sheets.  The Company’s equity method investments are included in equity method investments on the condensed consolidated balance sheets.

All investments are reviewed on a regular basis for possible impairment. If an investment's fair value is determined to be less than its net carrying value and the decline is determined to be other-than-temporary, the investment is written down to its fair value. Such an evaluation is judgmental and dependent on specific facts and circumstances. Factors considered in determining whether an other-than-temporary decline in value has occurred include: the magnitude of the impairment and length of time that the market value was below the cost basis; financial condition and business prospects of the investee; the Company’s intent and ability to retain the investment for a sufficient period of time to allow for recovery in market value of the investment; issues that raise concerns about the investee's ability to continue as a going concern; any other information that the Company may be aware of related to the investment. The Company does not report the fair value of its equity investments in non-publicly traded companies because it is not practical to do so.

Research and Development Costs and Collaborations

All research and development costs are charged to expense as incurred. Such costs primarily consist of lab supplies, contract services, stock-based compensation expense, salaries and related benefits.

Acquired In-Process Research and Development Expense

The Company has acquired and may continue to acquire the rights to develop and commercialize new drug candidates. The up-front payments to acquire a new drug compound, as well as future milestone payments, are immediately expensed as acquired in-process research and development provided that the drug has not achieved regulatory approval for marketing and, absent obtaining such approval, have no alternative future use. Prior to November 8, 2016, all acquired in-process research and development was expensed immediately. The acquired in-process research and development related to the business combination of Virttu Biologics Limited ("Virttu") and Scilex for which certain products are under development and expected to be commercialized in the future was capitalized and recorded within “Intangibles, net” on the accompanying condensed consolidated balance sheet. Capitalized in-process research and development will be reviewed annually for impairment or more frequently as changes in circumstance or the occurrence of events suggest that the remaining value may not be recoverable.

Income Taxes

The provisions of the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Topic 740 “Income Taxes,” addresses the determination of whether tax benefits claimed or expected to be claimed on a tax return should be recorded in the financial statements. Under ASC Topic 740-10, the Company may recognize the tax benefit from an uncertain tax position only if it is more likely than not that the tax position will be sustained on examination by taxing authorities, based on the technical merits of the position. The Company has determined that it has uncertain tax positions.

The Company accounts for income taxes using the asset and liability method to compute the differences between the tax basis of assets and liabilities and the related financial amounts, using currently enacted tax rates.

The Company has deferred tax assets, which are subject to periodic recoverability assessments. Valuation allowances are established, when necessary, to reduce deferred tax assets to the amount that more likely than not will be realized. As of each of December 31, 2016 and September 30, 2017 , the Company maintained a full valuation allowance against its deferred tax assets, with the exception of an amount equal to its deferred tax liabilities, which can be expected to reverse over a definite life, an amount equal to its alternative minimum tax credits and state research and development tax credits for which there is no expiration and the deferred tax assets related to its Scilex investment.

Revenue Recognition

The Company’s revenues are generated primarily from license fees, various NIH grant awards, and from the sale of customized reagents and the provision of contract development services. The revenue from the NIH grant awards is based upon subcontractor and internal costs incurred that are specifically covered by the grant, and where applicable, a facilities and administrative rate that provides funding for overhead expenses. These revenues are recognized when expenses have been incurred by subcontractors or when the Company incurs internal expenses that are related to the grant.

License fees for the licensing of product rights are recorded as deferred revenue upon receipt of cash and recognized as revenue on a straight-line basis over the license period upon the transfer of value to the customer.

Revenues from sales are generated from the sale of customized reagents which include industrial standard cytotoxins, linkers, and linker-toxins used for preparing ADCs.  Contract development services include providing synthetic expertise to customers’ synthesis by delivering proprietary cytotoxins, linkers and linker-toxins and ADC service using industry standard toxin and antibodies provided by customers. Revenue is recognized when, (i) persuasive evidence of an arrangement exists, (ii) the product has been shipped or the services have been rendered, (iii) the price is fixed or determinable, and (iv) collectability is reasonably assured.  Royalty revenues will be recognized as earned per the terms of underlying royalty bearing contracts.

The Company is obligated to accept from customers the return of products sold that are damaged or do not meet certain specifications. The Company may authorize the return of products sold in accordance with the terms of its sales contracts, and estimates allowances for such amounts at the time of sale. The Company has not experienced any sales returns.

Stock-based Compensation

The Company accounts for stock-based compensation in accordance with FASB ASC Topic 718 “ Compensation – Stock Compensation, ” which establishes accounting for equity instruments exchanged for employee services. Under such provisions, stock-based compensation cost is generally measured at the grant date, based on the calculated fair value of the award and an estimate of forfeitures, and is recognized as an expense, under the straight-line method, over the employee’s requisite service period (generally the vesting period of the equity grant).

The Company accounts for equity instruments, including restricted stock or stock options, issued to non-employees in accordance with authoritative guidance for equity based payments to non-employees. Stock options issued to non-employees are accounted for at their estimated fair value determined using the Black-Scholes option-pricing model. The fair value of options and restricted stock granted to non-employees is re-measured over the vesting period, and the resulting changes in fair value are recognized as expense in the period of the change in proportion to the services rendered to date.

Comprehensive (Loss) Income

Comprehensive loss is primarily comprised of net loss and adjustments for the change in unrealized gains and losses on the Company’s investments in available-for-sale marketable securities, net of taxes. The Company displays comprehensive loss and its components in its condensed consolidated statements of comprehensive (loss) income.

Net Loss per Share

Basic net loss per share is computed by dividing net loss for the period by the weighted average number of common shares outstanding during the period. Diluted net loss per share reflects the additional dilution from potential issuances of common stock, such as stock issuable pursuant to the exercise of stock options or the exercise of outstanding warrants. The treasury stock method and if-converted method are used to calculate the potential dilutive effect of these common stock equivalents. Potentially dilutive shares are excluded from the computation of diluted net loss per share when their effect is anti-dilutive. In periods where a net loss is presented, all potentially dilutive securities are anti-dilutive and are excluded from the computation of diluted net loss per share.

Segment Information

The Company is engaged primarily in the discovery and development of innovative therapies focused on oncology and the treatment of chronic cancer pain as well as immunology and infectious diseases based on its platform technologies. Accordingly, the Company has determined that it operates in one operating segment.

Recent Accounting Pronouncements

In May 2014, the FASB issued Accounting Standards Update (“ASU”) No. 2014-09, Revenue from Contracts with Customers (Topic 606) , which supersedes all existing revenue recognition requirements, including most industry-specific guidance. The new standard requires a company to recognize revenue when it transfers goods or services to customers in an amount that reflects the consideration that the company expects to receive for those goods or services. ASU No. 2014-09 was originally effective for annual reporting periods beginning after December 15, 2016, and interim periods thereafter.  In August 2015, the FASB issued ASU No. 2015-14, Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date, which delayed the effective date of the new standard for annual reporting periods beginning after December 15, 2017, and interim periods thereafter.  The FASB also agreed to allow entities to choose to adopt the standard as of the original effective date.  The Company is in the process of evaluating the impact of ASU No. 2014-09 on its royalty and license revenues and does not expect a material impact to its grants and sales and services revenues. The standard allows for either a full retrospective or modified retrospective method of adoption. The Company expects to adopt this standard using the modified retrospective approach on its effective date, January 1, 2018.

In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments--Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities. The ASU amends the guidance in U.S. GAAP on the classification and measurement of financial instruments. Changes to the current guidance primarily affect the accounting for equity investments, financial liabilities under the fair value option, and the presentation and disclosure requirements for financial instruments. ASU No. 2016-01 is effective for fiscal years and interim periods beginning after December 15, 2017, and upon adoption, an entity should apply the amendments by means of a cumulative-effect adjustment to the balance sheet at the beginning of the first reporting period in which the guidance is effective. Early adoption is not permitted except 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 standard is not expected to have a material impact on the Company’s consolidated financial position, results of operations or cash flows.

In February 2016, the FASB issued ASU No. 2016-02, Leases . ASU No. 2016-02 is aimed at making leasing activities more transparent and comparable, and requires substantially all leases be recognized by lessees on their balance sheet as a right-of-use asset and corresponding lease liability, including leases currently accounted for as operating leases. ASU No. 2016-02 is effective for  financial statements issued for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted. The Company is currently evaluating the impact that the adoption of ASU No. 2016-02 will have on its consolidated financial position, results of operations and cash flows.

In March 2016, the FASB issued ASU No. 2016-06, Derivatives and Hedging (Topic 815): Contingent Put and Call Options in Debt Instruments, which clarifies the steps required when assessing whether the economic characteristics and risks of call (put) options that can accelerate the payment of principal on debt instruments are clearly and closely related to their debt hosts based on a four-step decision process. ASU No. 2016-06 is effective for financial statements issued for fiscal years beginning after December 15, 2016, and interim periods within those fiscal years. The adoption of this standard did not have a material impact on the Company’s consolidated financial position, results of operations or cash flows.

In March 2016, the FASB issued ASU No. 2016-07, Investments – Equity Method and Joint Ventures (Topic 323): Simplifying the Transition to the Equity Method of Accounting, requires that an entity that has an available-for-sale equity security that becomes qualified for the equity method of accounting recognize through earnings the unrealized holding gain or loss in accumulated other comprehensive income at the date the investment becomes qualified for the equity method and eliminates the requirement for retroactive adjustment of the investment as a result of an increase in the level of ownership interest or degree of influence. ASU No. 2016-07 is effective for financial statements issued for fiscal years and interim periods within those fiscal years beginning after December 15, 2016. The adoption of this standard did not have a material impact on the Company’s consolidated financial position, results of operations or cash flows.

In March 2016, the FASB issued ASU No. 2016-09, Compensation – Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting. The ASU includes various provisions to simplify the accounting for share-based payments with the goal of reducing the cost and complexity of accounting for share-based payments. The amendments may significantly impact net income, earnings per share and the statement of cash flows as well as present implementation and administration challenges for companies with significant share-based payment activities. ASU No. 2016-09 is effective for public companies for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years. The adoption of this standard did not have a material impact on the Company’s consolidated financial position, results of operations or cash flows.

In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments to improve financial reporting by requiring timelier recording of credit losses on loans and other financial instruments held by financial institutions and other organizations. The ASU requires the measurement of all expected credit losses for financial assets held at the reporting date based on historical experience, current conditions and reasonable and supportable forecasts. The ASU also requires enhanced disclosures to help investors and other financial statement users better understand significant estimates and judgments used in estimating credit losses, as well as the credit quality and underwriting standards of an organization’s portfolio. The ASU is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early application will be permitted for all organizations for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. The Company is currently evaluating the impact that the adoption of ASU No. 2016-13 will have on its consolidated financial position, results of operations and cash flows.

In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments, to improve financial reporting in regards to how certain transactions are classified in the statement of cash flows. The ASU requires that (1) debt extinguishment costs be classified as cash outflows for financing activities and provides additional classification guidance for the statement of cash flows, (2) the classification of cash receipts and payments that have aspects of more than one class of cash flows to be determined by applying specific guidance under generally accepted accounting principles, and (3) each separately identifiable source or use within the cash receipts and payments be classified on the basis of their nature in financing, investing or operating activities. The ASU is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years.  The Company does not believe the adoption of ASU No. 2016-15 will have a material impact on the Company’s consolidated financial position, results of operations or cash flows.

In January 2017, the FASB issued ASU No. 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business, to clarify the definition of a business to add guidance for evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. Specifically, this ASU provides a screen to assist entities in determining when a set should not be considered a business, which screen provides that if substantially all of the fair value of the gross assets acquired (or disposed of) is concentrated in a single identifiable asset or group of similar assets, the set is not a business. The ASU is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years.  The Company does not believe the adoption of ASU No. 2017-01 will have a material impact on the Company’s consolidated financial position, results of operations or cash flows.

In January 2017, the FASB issued ASU No. 2017-04, Simplifying the Test for Goodwill Impairment (Topic 350) . This standard eliminates Step 2 from the goodwill impairment test, instead requiring an entity to recognize a goodwill impairment charge for the amount by which the goodwill carrying amount exceeds the reporting unit’s fair value. This guidance is effective

for interim and annual goodwill impairment tests in fiscal years beginning after December 15, 2019 with early adoption permitted. This guidance must be applied on a prospective basis. The Company is currently evaluating the impact that the adoption of ASU No. 2017-04 will have on the Company’s consolidated financial position, results of operations or cash flows.

In May 2017, the FASB issued ASU No. 2017-09, Compensation - Stock Compensation (Topic 718): Scope of Modification Accounting, to provide clarity and reduce both the diversity in practice and cost of complexity when applying the guidance. Specifically, the ASU provides additional modification conditions in determining whether or not modification accounting should be applied. The ASU is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years.  The Company does not believe the adoption of ASU No. 2017-09 will have a material impact on the Company’s consolidated financial position, results of operations or cash flows.

4. Acquisitions

Acquisition of Virttu Biologics Limited

On April 27, 2017, the Company entered into a Share Purchase Agreement (the “Virttu Purchase Agreement”) with TNK Therapeutics, Inc., a majority-owned subsidiary of the Company (“TNK”), Virttu, the shareholders of Virttu (the “Virttu Shareholders”) and Dayspring Ventures Limited, as the representative of the Virttu Shareholders, pursuant to which, among other things, TNK acquired from the Virttu Shareholders 100% of the outstanding ordinary shares of Virttu (the “Virttu Acquisition”).

Virttu focuses on the development of oncolytic viruses that infect and selectively multiply in and destroy tumor cells without damaging healthy tissue. Its lead oncolytic virus candidate, Seprehvir, infects and replicates in cancer cells selectively, leaving normal cells unharmed.

Under the Virttu Purchase Agreement, the total amount of the consideration payable to the Virttu Shareholders in the Virttu Acquisition is equal to $25 million , less Virttu’s net debt (the “Virttu Base Consideration”). An additional $10 million contingent consideration is payable upon the achievement of certain regulatory milestones (as described below) (the “Regulatory Approval Consideration”).

At the closing of the Virttu Acquisition (the “Closing”), the Company issued to the Virttu Shareholders consideration valued at approximately $2.2 million , which consisted primarily of an aggregate of 797,081 shares (the “Virttu Closing Shares”) and approximately $557,000 in cash (the “Cash Consideration”). The issuance of the Virttu Closing Shares and the payment of the Cash Consideration satisfied TNK’s obligation to pay 20% of the Virttu Base Consideration at the Closing. Under the terms of the Virttu Purchase Agreement, the Company agreed to provide additional consideration to the Virttu Shareholders, as follows:

(1) Upon a financing resulting in gross proceeds (individually or in the aggregate) to TNK of at least $50.0 million (a “Qualified Financing”), TNK will issue to the Virttu Shareholders an aggregate number of shares of its capital stock (“TNK Capital Stock”) as is equal to the quotient obtained by dividing 80% of the Virttu Base Consideration by the lowest per share price paid by investors in the Qualified Financing (the “TNK Financing Consideration”); provided, however, that 20% of the TNK Financing Consideration shall be held in escrow until April 27, 2018 (the “Financing Due Date”), to be used to, among other things, satisfy the indemnification obligations of the Virttu Shareholders. In the event that a Qualified Financing does not occur, then on the Financing Due Date, the Company will issue to the Virttu Shareholders an aggregate number of shares of the Company’s common stock as is equal to the quotient obtained by dividing 80% of the Virttu Base Consideration, by $5.55 (as adjusted, as appropriate, to reflect any stock splits or similar events affecting the Company’s common stock after the Closing).

(2) Within 45 business days after Virttu becomes aware that certain governmental bodies in the United States, the European Union, the United Kingdom or Japan have approved for commercialization, on or before October 26, 2024, Seprehvir (or any enhancement, combination or derivative thereof) as a monotherapy or in combination with one or more other active components (each of the first two such approvals by a governmental body being a “Regulatory Approval”), TNK shall pay half of the Regulatory Approval Consideration to the Virttu Shareholders, in a combination of (a) up to $5.0 million in cash (the “Regulatory Approval Cash”) and/or (b) (i) such number of shares of the Company’s common stock as is equal to the quotient obtained by dividing $5.0 million less the Regulatory Approval Cash (the “Regulatory Approval Share Value”) by the 30 Day VWAP (as defined below) of one share of the Company’s common stock; (ii) if TNK has completed its first public offering of TNK Capital Stock, the number of shares of TNK Capital Stock as is equal to the quotient obtained by dividing the Regulatory Approval Share Value by the 30 Day VWAP of one share of TNK Capital Stock; or (iii) such number of shares of common stock of a publicly traded company as is equal to the quotient obtained by dividing the Regulatory Approval Share Value by the volume weighted average price of the relevant security, as reported on the Nasdaq Capital Market (or other principal stock exchange or securities market on which the shares are then listed or quoted) for the thirty trading days immediately following

the receipt of Regulatory Approval (the “30 Day VWAP”), with the composition of the Regulatory Approval Consideration to be at TNK’s option. In order for a second regulatory approval to qualify as a Regulatory Approval under the Purchase Agreement, the second approval must be granted by a different governmental body in a different jurisdiction than that which granted the first Regulatory Approval.

At April 27, 2017, the 80% of the Virttu Base Consideration was valued at $12.8 million . The fair value of the 80% of the Virttu Base Consideration is recorded as a current liability and will be adjusted quarterly for changes in fair value or as events and circumstances arise. At April 27, 2017, the contingent Regulatory Approval Consideration was valued at $1.0 million . The fair value of the contingent Regulatory Approval Consideration is recorded as a non-current liability within "Deferred rent and other" on the accompanying condensed consolidated balance sheet and will be adjusted quarterly for changes in fair value or as events and circumstances arise.

The consolidated financial statements include the preliminary results of operations from this transaction, which have been accounted for as a business combination, and require, among other things, that assets acquired and liabilities assumed be recognized at their fair values as of the acquisition date. The preliminary valuation of the acquired assets and liabilities resulted in the recognition of identifiable assets of approximately $16.0 million comprised mainly of in-process research and development of approximately $15.4 million , deferred tax liabilities of $0.8 million and goodwill of approximately $1.4 million subject to final adjustments including tax related items. Various factors contributed to the establishment of goodwill, including an assembled workforce.

In connection with the Virttu transaction, we recorded acquisition costs of approximately $0.9 million in general and administrative expenses for the nine months ended September 30, 2017, for legal and related costs. Acquisition costs are expensed as incurred.

The purchase consideration, assets acquired, and liabilities assumed are preliminary and, as a result, are subject to change due to purchase price adjustments, additional information obtained related to fair value estimates, final tax adjustments and related items.

The acquisition of Virttu was not material to the Company's consolidated financial statements.

Acquisition of Scilex Pharmaceuticals Inc.

On November 8, 2016, the Company entered into a Stock Purchase Agreement (the “Scilex Purchase Agreement”) with Scilex and a majority of the stockholders of Scilex (the “Scilex Stockholders”) pursuant to which, on November 8, 2016, the Company acquired from the Scilex Stockholders, and the Scilex Stockholders sold to the Company, approximately 72% of the outstanding capital stock of Scilex (the “Scilex Acquisition”). The remainder of the outstanding capital stock of Scilex represents a noncontrolling interest of which approximately 23% continues to be held by ITOCHU CHEMICAL FRONTIER CORPORATION following the Scilex Acquisition.

Scilex focuses on the development and commercialization of specialty pharmaceutical products for the treatment of pain; its lead product, ZTlidoTM, is a branded lidocaine patch formulation being developed for the treatment of chronic pain. ZTlido™ (lidocaine patch 1.8%) will be manufactured by a contract manufacturer.

At the closing of the Scilex Acquisition, the Company issued to the Scilex Stockholders that were accredited investors (the “Accredited Scilex Stockholders”) consideration valued at $4.8 million , which consisted primarily of an aggregate of 754,911 shares of the Company’s common stock (the “Common Stock”).  Under the terms of the Scilex Purchase Agreement, the Company agreed to provide additional consideration to the Accredited Scilex Stockholders upon the achievement of certain milestones, as follows:

(1) Upon receipt of notice from the U.S. Food and Drug Administration (the “FDA”) that the FDA has accepted Scilex’s resubmitted new drug application for ZTlidoTM for the treatment of postherpetic neuralgia (the “NDA”), the Company will deliver to the Accredited Scilex Stockholders a number of shares of Common Stock equal to the quotient obtained by dividing 10% of the total undiscounted purchase consideration of approximately $47.8 million (the “Adjusted Base Consideration”) by a price (the “FDA Acceptance Price”) equal to the closing market price of one share of Common Stock, as reported by the Nasdaq Stock Market LLC (“Nasdaq”) on the date of Scilex’s receipt of the FDA notice or, if no closing price is reported for such date, the closing price on the last preceding date for which such quotation exists; provided, however, that in no event shall the FDA Acceptance Price be greater than $25.32 or less than $6.33 (in each case as adjusted, as appropriate, to reflect any stock splits or similar events affecting the Common Stock).

On September 11, 2017, the Company received notice from the FDA that the FDA had accepted the NDA and the Company issued to the Accredited Scilex Stockholders consideration valued at $1.4 million , which consisted primarily of an aggregate of 754,930 shares of Common Stock.

(2) Upon receipt of notice from the FDA that the FDA has approved the NDA for commercialization, the Company will deliver to the Accredited Scilex Stockholders cash and shares of Common Stock in such proportion to be determined in the Company’s sole discretion, with a total value equal to 80% of the Adjusted Base Consideration (the “FDA Approval Consideration”). To the extent that the Company elects to pay any portion of the FDA Approval Consideration in shares of Common Stock, the number of shares shall be equal to the quotient obtained by dividing (a) the portion of the FDA Approval Consideration to be paid in shares of Common Stock by (b) a price (the “FDA Approval Price”) equal to the closing market price of one share of Common Stock, as reported by Nasdaq on the date of the Scilex’s receipt of the FDA notice or, if no closing price is reported for such date, the closing price on the last preceding date for which such quotation exists; provided, however, that in no event shall the FDA Approval Price be greater than $25.32 or less than $6.33 (in each case as adjusted, as appropriate, to reflect any stock splits or similar events affecting the Common Stock). However, in no event may the Company make an election with respect to the FDA Approval Consideration so as to cause the total number of shares of Common Stock issued in connection with the Scilex Acquisition to exceed 4.99% of the total number of shares of Common Stock of the Company outstanding as of immediately prior to the Closing (as adjusted, as appropriate, to reflect any stock splits or similar events affecting the Common Stock), unless the Company has obtained stockholder approval to issue a greater number of shares.

During the first quarter of 2017, the Company identified an error in the valuation of acquisition consideration associated with the Scilex Acquisition, primarily related to the acquisition consideration payable, resulting in an overstatement of acquisition consideration payable of $6.5 million , and a corresponding overstatement of intangible assets of $6.7 million , goodwill of $4.6 million , deferred income tax liability of $2.8 million , additional paid-in capital of $0.6 million , and noncontrolling interest of $1.4 million as of December 31, 2016. The Company evaluated the materiality of this misstatement from quantitative and qualitative perspectives, and concluded that it was immaterial to the prior periods. Consequently, the Company corrected this error by recording the adjustment in the Company’s condensed consolidated balance sheet in the quarter ended March 31, 2017.

At November 8, 2016, the contingent consideration was valued at $33.5 million , resulting in a total purchase consideration of approximately $38.2 million . The fair value of the contingent consideration is recorded as a current liability and will be periodically adjusted for changes in fair value or as events and circumstances arise. The remainder of the outstanding capital stock of Scilex represents a noncontrolling interest which was valued at $12.3 million at November 8, 2016.  

The consolidated financial statements include the results of operations from this transaction, which have been accounted for as a business combination, and require, among other things, that assets acquired and liabilities assumed be recognized at their fair values as of the acquisition date. The valuation of the acquired assets resulted in the recognition of identifiable assets of approximately $54.9 million comprised mainly of in-process research and development of $21.9 million and patents of $32.6 million .  The valuation of the acquired liabilities resulted in the recognition of liabilities of approximately $17.9 million comprised mainly deferred tax liabilities of $13.9 million .  The Company recorded goodwill of $13.5 million associated with the acquisition. The amounts in this footnote reflect the adjustment described above. Various factors contributed to the establishment of goodwill, including an assembled workforce. 

Acquired In-process Research and Development of BDL

In August 2015, the Company and TNK entered into a Stock Purchase Agreement (the “Stock Purchase Agreement”) with BDL Products, Inc. (“BDL”) and the stockholders of BDL (“Stockholders”) pursuant to which the Stockholders sold all of their shares of capital stock in BDL to TNK for: (1) a cash payment of $100.00 , and (2)  $6.0 million in shares of TNK Class A Stock, subject to adjustment in certain circumstances, to be issued to the Stockholders upon a financing resulting in gross proceeds (individually or in the aggregate) to TNK of at least $50.0 million (a “Qualified Financing”).  In accordance with subsequent amendments to the Stock Purchase Agreement, in the event a Qualified Financing does not occur by October 15, 2017 (which is subject to further extension as implied and based on previously amended dates) or TNK does not complete an initial public offering of shares of its capital stock by September 15, 2017, in lieu of receiving shares of TNK pursuant to the acquisition, the Stockholders shall receive an aggregate of 309,917 shares of the Company’s common stock, subject to adjustment in certain circumstances.  

Although a Qualified Financing did not occur by October 15, 2017 and TNK did not complete an initial public offering by September 15, 2017, as of the date of the filing of this Quarterly Report on Form 10-Q, the Company has not issued shares to the Stockholders pursuant to the Stock Purchase Agreement as it is currently negotiating the terms of the Stock Purchase Agreement with the Stockholders.

Acquired In-process Research and Development of Cargenix

In August 2015,  the Company and TNK entered into a Membership Interest Purchase Agreement (the “Membership Interest Purchase Agreement”) with CARgenix Holdings LLC (“CARgenix”) and the members of CARgenix (the “Members”) pursuant to which the Members sold all of their membership interests in CARgenix to TNK for: (1) a cash payment of $100.00 , and (2)  $6.0 million in shares of TNK Class A common stock (“TNK Class A Stock”), subject to adjustment in certain circumstances, to be issued to the Members upon a financing resulting in gross proceeds (individually or in the aggregate) to TNK of at least $50.0 million (a “Qualified Financing”). In accordance with an amendment to the Membership Interest Purchase Agreement entered into in March 2016, in the event a Qualified Financing did not occur by September 15, 2016 or TNK did not complete an initial public offering of shares of its capital stock by October 15, 2016, in lieu of receiving shares of TNK pursuant to the acquisition, the Members would receive an aggregate of 309,917 shares of the Company’s common stock, subject to adjustment in certain circumstances and to account for fractional shares. TNK did not complete a Qualified Financing by the amended financing deadline and the Company issued 309,916 shares of its common stock to the Members on October 7, 2016.

5. Fair Value Measurements  

Fair value measurement is defined as the price that would be received to sell an asset or paid to transfer a liability in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants at the measurement date. A fair value hierarchy is established, which prioritizes the inputs used in measuring fair value into three broad levels as follows:

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

Level 2—Inputs, other than quoted prices in active markets, that are observable either directly or indirectly.

Level 3—Unobservable inputs based on the Company's own assumptions.

The following table presents the Company’s financial assets and liabilities that are measured at fair value on a recurring basis.  (in thousands):

	Fair Value Measurements at September 30, 2017
	Balance				Quoted Prices in Active Markets (Level 1)				Significant Other Observable Inputs (Level 2)				Significant Unobservable Inputs (Level 3)
Assets:
Cash and cash equivalents	$	38,323			$	38,323			$	—			$	—
Marketable securities	$	888			$	700			$	—			$	188
Total assets	$	39,211			$	39,023			$	—			$	188
Liabilities:
Acquisition consideration payable - Current	$	44,682			$	—			$	—			$	44,682
Acquisition consideration payable - Non-current	$	1,032			$	—			$	—			$	1,032
Total liabilities	$	45,714			$	—			$	—			$	45,714
	Fair Value Measurements at December 31, 2016
	Balance				Quoted Prices in Active Markets (Level 1)				Significant Other Observable Inputs (Level 2)				Significant Unobservable Inputs (Level 3)
Assets:
Cash and cash equivalents	$	82,398			$	82,398			$	—			$	—
Marketable securities	$	1,106			$	831			$	—			$	275
Total assets	$	83,504			$	83,229			$	—			$	275
Liabilities:
Acquisition consideration payable	$	48,362			$	—			$	—			$	48,362
Total liabilities	$	48,362			$	—			$	—			$	48,362