CLDX Celldex Therapeutics Inc

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

x       QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2018

OR

o          TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Commission File Number: 000-15006

CELLDEX THERAPEUTICS, INC.

(Exact name of registrant as specified in its charter)

Perryville III Building, 53 Frontage Road, Suite 220, Hampton, New Jersey 08827

(Address of principal executive offices) (Zip Code)

(908) 200-7500

(Registrant’s telephone number, including area code)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes  x   No  o

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).  Yes  x   No  o

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act. (Check one):

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  o

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

As of May 3, 2018, 143,392,841 shares of common stock, $.001 par value per share, were outstanding.

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CELLDEX THERAPEUTICS, INC.

FORM 10-Q

For the Quarterly Period Ended March 31, 2018

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See accompanying notes to unaudited condensed consolidated financial statements

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See accompanying notes to unaudited condensed consolidated financial statements

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CELLDEX THERAPEUTICS, INC.

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approximately $1.3 million related to cash severance payments and other employee-related costs, which will primarily be paid during the second and third quarters of 2018. In the second quarter of 2018, the Company undertook a pipeline prioritization initiative and any adjustments to the fair value of the Kolltan acquisition contingent consideration liabilities resulting from this initiative will be recognized in the second quarter of 2018.

(3) Significant Accounting Policies

The significant accounting policies used in preparation of these condensed consolidated financial statements on Form 10-Q for the quarterly period ended March 31, 2018 are consistent with those discussed in Note 2 to the financial statements in our Annual Report on Form 10-K for the year ended December 31, 2017, except as it relates to the adoption of new accounting standards during the first three months of 2018 as discussed below.

Newly Adopted Accounting Pronouncements

On January 1, 2018, the Company adopted the new U.S. GAAP standard “ Revenue from Contracts with Customers” using a modified retrospective application method, recognizing an immaterial cumulative-effect adjustment to accumulated deficit. The Company applied the new guidance to (i) contracts not completed as of the date of adoption and (ii) all new revenue contracts entered into after January 1, 2018. Refer to Note 11 “Revenue” for additional details on this adoption and the Company’s updated revenue accounting policy and disclosures.

On January 1, 2018, the Company adopted a U.S. GAAP standard update “Classification of Certain Cash Receipts and Cash Payments” which clarifies the classification of certain cash receipts and payments in the statement of cash flows. The adoption of this new standard did not impact the Company’s consolidated financial statements.

Recent Accounting Pronouncements

From time to time, new accounting pronouncements are issued by the FASB or other standard setting bodies that are adopted by the Company as of the specified effective date. Unless otherwise discussed, the Company believes that the impact of recently issued standards that are not yet effective will not have a material impact on the Company’s consolidated financial statements upon adoption.

In February 2016, the FASB issued a new U.S. GAAP accounting standard which requires that all lessees recognize the assets and liabilities that arise from leases on the balance sheet and disclose qualitative and quantitative information about its leasing arrangements. This new standard will be effective for the Company on January 1, 2019. The Company is currently evaluating the potential impact that this standard may have on the Company’s consolidated financial statements.

(4)  Fair Value Measurements

The following tables set forth the Company’s financial assets and liabilities subject to fair value measurements:

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The Company’s financial assets consist mainly of money market funds and cash equivalents and marketable securities and are classified as Level 2 within the valuation hierarchy. The Company values its marketable securities utilizing independent pricing services which normally derive security prices from recently reported trades for identical or similar securities, making adjustments based on significant observable transactions. At each balance sheet date, observable market inputs may include trade information, broker or dealer quotes, bids, offers or a combination of these data sources.

The following table reflects the activity for the Company’s contingent consideration liabilities measured at fair value using Level 3 inputs for the three months ended March 31, 2018 (in thousands):

The valuation technique used to measure fair value of the Company’s Level 3 liabilities, which consist of contingent consideration related to the acquisition of Kolltan in 2016, was primarily an income approach. The Company may be required to pay future consideration of up to $172.5 million that is contingent upon the achievement of specified development, regulatory approvals or sales-based milestone events. The significant unobservable inputs used in the fair value measurement of the contingent consideration are estimates including probability of success, discount rates and amount of time until the conditions of the milestone payments are met. During the three months ended March 31, 2018, the Company recorded a $13.6 million gain on fair value remeasurement of contingent consideration, primarily due to updated assumptions for Glemba-related milestones and discount rates due to the METRIC failure and discontinuation of the Glemba program. During the three months ended March 31, 2017, the Company recorded a $3.4 million loss on fair value remeasurement of contingent consideration, primarily due to changes in discount rates and the passage of time.

The Company did not have any transfers of assets or liabilities between the fair value measurement classifications during the three months ended March 31, 2018.

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(5)  Marketable Securities

The following is a summary of marketable securities, classified as available-for-sale:

The Company holds investment-grade marketable securities, and none were in a continuous unrealized loss position for more than 12 months as of March 31, 2018 and December 31, 2017. The unrealized losses are attributable to changes in interest rates and the Company does not believe any unrealized losses represent other-than-temporary impairments.

Marketable securities include $0.2 million and $0.3 million in accrued interest at March 31, 2018 and December 31, 2017, respectively.

(6)  Intangible Assets and Goodwill

Finite-lived intangible assets consist solely of license rights amended under a 2009 agreement with Amgen Fremont related to developing and commercializing Glemba. The Company evaluated the intangible asset for potential impairment related to the discontinuation of the Glemba program. The carrying value of the intangible asset was determined to be fully impaired and a non-cash impairment charge of $6.9 million was recorded for the three months ended March 31, 2018. Amortization expense related to this finite-lived intangible asset was $0.2 million for each of the three-month periods ended March 31, 2018 and 2017.

Indefinite-lived intangible assets consist of acquired in-process research and development (“IPR&D”) related to the development of Glemba, CDX-3379, the anti-KIT program and the TAM program. The Company performs an impairment test on IPR&D assets at least annually, or more frequently if events or changes in circumstances indicate that IPR&D assets may be impaired.

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The Company evaluated the Glemba IPR&D asset for potential impairment related to the discontinuation of the Glemba program. The Company concluded that the Glemba IPR&D asset was fully impaired, and a non-cash impairment charge of $11.8 million was recorded for the three months ended March 31, 2018. CDX-3379 is in Phase 2 development. The anti-KIT and TAM programs are in preclinical development.

As of March 31, 2018, none of the remaining IPR&D assets had reached technological feasibility nor did any have alternative future uses. Due to the nature of IPR&D projects, the Company may experience future delays or failures to obtain regulatory approvals to conduct clinical trials, failures of such clinical trials or other failures to achieve a commercially viable product, and as a result, may recognize further impairment losses in the future.

The Company evaluated goodwill for potential impairment due to the METRIC failure. The carrying amount of the Company was compared to the Company’s fair value. The Company’s fair value assessment reflected a number of significant management assumptions and estimates including the Company’s probability forecasts for pipeline assets, income taxes, capital expenditures and changes in working capital requirements. Changes in these assumptions and/or discount rates could materially impact the Company’s conclusions. Through this assessment, it was determined that the carrying amount of the Company exceeded its fair value by over $91.0 million. As such, the full goodwill asset was considered impaired and a charge of $91.0 million was recorded during the three months ended March 31, 2018.

(7) Other Long-Term Liabilities

Other long-term liabilities include the following:

In November 2015, December 2014, January 2014 and January 2013, the Company received approval from the New Jersey Economic Development Authority and agreed to sell New Jersey tax benefits of $9.8 million, $1.9 million, $1.1 million and $0.8 million to an independent third party for $9.2 million, $1.8 million, $1.0 million and $0.8 million, respectively. Under the agreement, the Company must maintain a base of operations in New Jersey for five years or the tax benefits must be paid back on a pro-rata basis based on the number of years completed. During the three months ended March 31, 2018 and 2017, the Company recorded $0.4 million and $0.5 million to other income related to the sale of these tax benefits, respectively.

(8) Stockholders’ Equity

In May 2016, the Company entered into an agreement with Cantor Fitzgerald & Co. (“Cantor”) to allow the Company to issue and sell shares of its common stock having an aggregate offering price of up to $60.0 million from time to time through Cantor, acting as agent. In November 2017, the Company filed a prospectus supplement registering the offer and sale of shares of common stock of up to an additional $75.0 million under the agreement with Cantor. During the three months ended March 31, 2018, the Company issued 4,692,024 shares of common stock under this controlled equity offering sales agreement with Cantor resulting in net

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proceeds of $11.7 million after deducting commission and offering expenses. At March 31, 2018, the Company had $55.5 million remaining in aggregate gross offering price available under the Cantor agreement.

(9)  Stock-Based Compensation

A summary of stock option activity for the three months ended March 31, 2018 is as follows:

The weighted average grant-date fair value of stock options granted during the three-month period ended March 31, 2018 was $1.86. Stock-based compensation expense for the three months ended March 31, 2018 and 2017 was recorded as follows:

The fair values of employee and director stock options granted during the three months ended March 31, 2018 and 2017 were valued using the Black-Scholes option pricing model with the following assumptions:

(10) Accumulated Other Comprehensive Income

The changes in accumulated other comprehensive income, which is reported as a component of stockholders’ equity, for the three months ended March 31, 2018 are summarized below:

No amounts were reclassified out of accumulated other comprehensive income during the three months ended March 31, 2018.

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(11)  Revenue

On January 1, 2018, the Company adopted a new revenue accounting standard, “ Revenue from Contracts with Customers ” (ASC 606) . Upon adoption using the modified retrospective application, the Company recognized a $1.3 million decrease to accumulated deficit, a $0.8 million decrease in deferred revenue and $0.5 million increase in accounts receivable due to the cumulative impact of adopting ASC 606 . This impact was driven by the acceleration of revenue using a percentage-of-completion method of accounting under ASC 606 for an open contract that had previously been accounted for using the Contingency Adjusted Performance Model (“CAPM”) under previous guidance.

Results for reporting periods beginning after January 1, 2018 are presented under ASC 606 while prior period amounts were not adjusted and continue to be reported in accordance with historic accounting under previous guidance. There was not a material impact to revenues as a result of applying ASC 606 for the three months ended March 31, 2018, and there have not been significant changes to the Company’s business processes, systems or internal controls as a result of adopting the new standard. The Company expects revenue recognition to remain largely unchanged under the new standard.

Revenue Recognition

Revenues are recognized when performance obligations under agreements or contracts are satisfied, in an amount that reflects the consideration the Company expects to be entitled to in exchange for those services.

The Company determines revenue recognition through the following steps:

Revenue for the Company has historically been derived from biopharmaceutical product development agreements with collaborative partners for the research and development of therapeutic drug candidates. The terms of the agreements may include nonrefundable signing and licensing fees, funding for research, development and manufacturing, milestone payments and royalties on any product sales derived from collaborations. The Company assesses the multiple obligations typically within product development contracts to determine the distinct performance obligations and how to allocate the arrangement consideration to each distinct performance obligation.

Under product development agreements, revenue is generally recognized using a cost-to-cost measure of progress. Revenue is recognized based on the costs incurred to date as a percentage of the total estimated costs to fulfill the contract. Incurred cost represents work performed, which corresponds with, and thereby best depicts, the transfer of control to the customer. Due to the nature of the work performed in these arrangements, the estimation of cost at completion is complex, subject to many variables, such as expected clinical trail costs, and requires significant judgements. Circumstances can arise that change original estimates of costs or progress toward completion. Any revisions to estimates are reflected in revenue on a cumulative catch-up basis in the period in which the change in circumstances became known.

Revenue for the Company is also derived from manufacturing and research and development arrangements. The Company owns and operates a cGMP manufacturing facility in Fall River, Massachusetts, to produce drug substance for its current and planned early-stage clinical trials. In order to utilize excess capacity, the Company has, from time to time, entered into contract manufacturing and research and development arrangements in which services are provided on a time-and-material basis or at a negotiated fixed-price. Revenue from time-and-material contracts is generally recognized on an output basis as labor hours and/or direct expenses are incurred. Under fixed-price contracts, revenue is generally recognized on an output basis as progress is made toward completion of the performance obligations using surveys of performance completed to date.

Contract Assets and Liabilities

The Company classifies the right to consideration in exchange for products or services transferred to a client as either a receivable or a contract asset. A receivable is a right to consideration that is unconditional as compared to a contract asset which is a right to consideration that is conditional upon factors other than the passage of time. At January 1, 2018 and March 31, 2018, the Company’s right to consideration under all contracts was considered unconditional, and as such, there were no recorded contract assets.

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The Company’s contract liabilities result from arrangements where the Company has received payment in advance of performance under the contract. These amounts are included as deferred revenue within other long-term liabilities and current portion of long term liabilities on the condensed consolidated balance sheets. Revenue recognized from contract liabilities as of January 1, 2018 during the three months ended March 31, 2018 was $0.6 million. Revenue expected to be recognized in the future from contract liabilities as performance obligations are satisfied are not expected to be material.

Product Development and Licensing Revenue

The Company’s primary product development and licensing revenue is associated with a clinical collaboration agreement with BMS. This agreement was entered into in 2014 and its purpose is to evaluate the safety, tolerability and preliminary efficacy of varlilumab and Opdivo ® , BMS’s PD-1 immune checkpoint inhibitor, in a Phase 1/2 study. Under this agreement, BMS made an upfront payment to Celldex of $5.0 million and provides funding for 50% of the external costs incurred by the Company in connection with the clinical trial. The Company recorded $0.9 million in revenue related to this agreement during the three months ended March 31, 2018.

Contract and Grants Revenue

In 2017, the Company entered into fixed-fee manufacturing and research and development arrangements with both the International AIDS Vaccine Initiative (IAVI) and Frontier Biotechnologies, Inc (Frontier). The Company recognized $2.3 million and $0.0 million in revenue under these agreements during the three months ended March 31, 2018 and 2017, respectively.

In 2013, the Company entered into an agreement, as amended, with Rockefeller University pursuant to which the Company performs manufacturing and research and development services for Rockefeller University. The Company recognized $0.7 million and $0.8 million in revenue for labor hours and direct costs incurred related to the Rockefeller University agreement during the three months ended March 31, 2018 and 2017, respectively.

(12)  Income Taxes

On December 22, 2017, the Tax Cuts and Jobs Act (“TCJA”) was enacted and led to significant changes to U.S. tax law. Also on December 22, 2017, the SEC staff issued SAB 118, allowing companies to record the effects of the TCJA on a provisional basis during a measurement period not to extend beyond one year of the enactment date. SAB 118 was codified into ASC 740 by ASU 2018-05.

The Company recognized an income tax benefit of $19.1 million related to implementing applicable provisions of the TCJA during the year ended December 31, 2017. In accordance with SAB 118, the Company considered this adjustment to be a provisional amount based on the Company’s best estimates at December 31, 2017. During the three months ended March 31, 2018, there was no further information or change in estimates related to the provisional amount recognized during the year ended December 31, 2017. However, updated guidance, interpretations or assumptions could lead the Company to make further adjustments to income tax benefit (provision) in the future. The Company expects its accounting for the tax effects of the TCJA to be completed in 2018.

The Company has evaluated the positive and negative evidence bearing upon the realizability of its net deferred tax assets and considered its history of losses, ultimately concluding that it is “more likely than not” that the Company will not recognize the benefits of federal, state and foreign deferred tax assets and, as such, has maintained a full valuation allowance on its deferred tax assets as of March 31, 2018 and December 31, 2017.

A net deferred tax liability of $3.0 million and $3.8 million existed at March 31, 2018 and December 31, 2017, respectively, related to the temporary differences associated with the IPR&D intangible assets acquired in previous business combinations and not deductible for tax purposes. During the quarter ended March 31, 2018, a $0.8 million non-cash income tax benefit was recorded related to impaired Glemba IPR&D assets

Massachusetts, New Jersey, Connecticut and Australia are the jurisdictions in which the Company primarily operates or has operated and has income tax nexus. The Company is not currently under examination by these or any other jurisdictions for any tax year.

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(13)  Net Loss Per Share

Basic net loss per common share is based upon the weighted-average number of common shares outstanding during the period, excluding restricted stock that has been issued but is not yet vested. Diluted net loss per common share is based upon the weighted-average number of common shares outstanding during the period plus additional weighted-average potentially dilutive common shares outstanding during the period when the effect is dilutive. The potentially dilutive common shares that have not been included in the net loss per common share calculations because the effect would have been anti-dilutive are as follows:

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·                   our ability to protect our intellectual property rights, including the ability to successfully defend patent oppositions filed against a European patent related to technology we use in varlilumab, and our ability to avoid intellectual property litigation, which can be costly and divert management time and attention; and

·                   the risk factors set forth elsewhere in this quarterly report on Form 10-Q and the factors listed under the headings “Business,” “Risk Factors” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in the Company’s annual report on Form 10-K for the year ended December 31, 2017 and other reports that we file with the Securities and Exchange Commission .

All forward-looking statements are expressly qualified in their entirety by this cautionary notice. You are cautioned not to place undue reliance on any forward-looking statements, which speak only as of the date of this report or the date of the document incorporated by reference into this report. We have no obligation, and expressly disclaim any obligation, to update, revise or correct any of the forward-looking statements, whether as a result of new information, future events or otherwise. We have expressed our expectations, beliefs and projections in good faith and we believe they have a reasonable basis. However, we cannot assure you that our expectations, beliefs or projections will result or be achieved or accomplished.

OVERVIEW

We are a biopharmaceutical company focused on the development and commercialization of immunotherapies and other targeted biologics. Our drug candidates are derived from a broad set of complementary technologies which have the ability to engage the human immune system and/or directly inhibit tumors to treat specific types of cancer or other diseases. They are aimed at addressing market opportunities for which we believe current therapies are inadequate or non-existent.

In April 2018, we announced that that our randomized, Phase 2b METRIC Study of glembatumumab vedotin compared to Xeloda ®  (capecitabine) in patients with metastatic triple-negative breast cancers that overexpress gpNMB failed to meet its primary endpoint of improving progression-free survival (PFS). We stated that based on this result, we would prioritize our pipeline and evaluate our operational and workforce needs to extend our financial resources and direct them to continued pipeline advancement. Progress on the pipeline prioritization initiative is reflected below.

We are focusing our efforts and resources on the continued research and development of:

·                   CDX-1140, an agonist human monoclonal antibody targeted to CD40, a key activator of immune response, currently in a Phase 1 dose-escalation study in multiple types of solid tumors;

·                   CDX-3379, a human monoclonal antibody designed to block the activity of ErbB3 (HER3) currently in an early Phase 2 study in advanced head and neck squamous cell cancer in combination with Erbitux ® ;

·                   CDX-301, a dendritic cell growth factor currently being evaluated in an investigator-initiated pilot study and planned for combination study with CDX-1140; and

·                   Varlilumab, an immune modulating antibody targeting CD27 designed to enhance a patient’s immune response against cancer that is being studied in multiple investigator initiated research studies and is currently completing a Phase 1/2 study across multiple solid tumors in combination with Opdivo ® . We are conducting the study in collaboration with Bristol-Myers Squibb Company (BMS) and plan to present data at various medical meetings in 2018, including in an oral presentation at the 2018 ASCO Annual Meeting in June. We intend to explore varlilumab externally through several investigator-initiated studies and internally through inclusion in combination studies.

To conserve resources, we are discontinuing development of:

·                   Glembatumumab vedotin, a targeted antibody-drug conjugate (ADC), across all indications, as previously disclosed;

·                   CDX-014, an ADC (which are typically more costly to develop than other therapeutics), in early Phase 1 development in renal cell and clear cell ovarian carcinomas; and

·                   CDX-1401, an NY-ESO-1-antibody fusion protein, that was being explored in investigator-sponsored and collaborative studies.

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We also routinely work with external parties to collaboratively advance our drug candidates. In addition to Celldex-led studies, we also have an Investigator Initiated Research (IIR) program with four studies ongoing with our prioritized drug candidates and additional studies currently under consideration.

Our goal is to build a fully integrated, commercial-stage biopharmaceutical company that develops important therapies for patients with unmet medical needs. We believe our program assets provide us with the strategic options to either retain full economic rights to our innovative therapies or seek favorable economic terms through advantageous commercial partnerships. This approach allows us to maximize the overall value of our technology and product portfolio while best ensuring the expeditious development of each individual product. Currently, all programs are fully owned by Celldex.

The expenditures that will be necessary to execute our business plan are subject to numerous uncertainties. Completion of clinical trials may take several years or more, and the length of time generally varies substantially according to the type, complexity, novelty and intended use of a drug candidate. It is not unusual for the clinical development of these types of drug candidates to each take five years or more, and for total development costs to exceed $100 million for each drug candidate. We estimate that clinical trials of the type we generally conduct are typically completed over the following timelines:

The duration and the cost of clinical trials may vary significantly over the life of a project as a result of differences arising during the clinical trial protocol, including, among others, the following:

·                   the number of clinical sites included in the trials;

·                   the length of time required to enroll suitable patient subjects; and

·                   the efficacy and safety profile of the drug candidate.

We test potential drug candidates in numerous preclinical studies for safety, toxicology and immunogenicity. We may then conduct multiple clinical trials for each drug candidate. As we obtain results from trials, we may elect to discontinue or delay clinical trials for certain drug candidates in order to focus our resources on more promising drug candidates.

An element of our business strategy is to pursue the discovery, research and development of a broad portfolio of drug candidates. This is intended to allow us to diversify the risks associated with our research and development expenditures. To the extent we are unable to maintain a broad range of drug candidates, our dependence on the success of one or a few drug candidates increases.

Regulatory approval is required before we can market our drug candidates as therapeutic products. In order to proceed to subsequent clinical trial stages and to ultimately achieve regulatory approval, the regulatory agency must conclude that our clinical data are safe and effective. Historically, the results from preclinical testing and early clinical trials (through Phase 2) have often not been predictive of results obtained in later clinical trials. A number of new drugs and biologics have shown promising results in early clinical trials but subsequently failed to establish sufficient safety and efficacy data to obtain necessary regulatory approvals.

Furthermore, our business strategy includes the option of entering into collaborative arrangements with third parties to complete the development and commercialization of our drug candidates. In the event that third parties take over the clinical trial process for one of our drug candidates, the estimated completion date would largely be under control of that third party rather than us. We cannot forecast with any degree of certainty which proprietary products, if any, will be subject to future collaborative arrangements, in whole or in part, and how such arrangements would affect our development plan or capital requirements. Our programs may also benefit from subsidies, grants, contracts or government or agency-sponsored studies that could reduce our development costs.

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As a result of the uncertainties discussed above, among others, it is difficult to accurately estimate the duration and completion costs of our research and development projects or when, if ever, and to what extent we will receive cash inflows from the commercialization and sale of a product. Our inability to complete our research and development projects in a timely manner or our failure to enter into collaborative agreements, when appropriate, could significantly increase our capital requirements and could adversely impact our liquidity. These uncertainties could force us to seek additional, external sources of financing from time to time in order to continue with our business strategy. Our inability to raise additional capital, or to do so on terms reasonably acceptable to us, would jeopardize the future success of our business.

During the past five years through December 31, 2017, we incurred an aggregate of $470.9 million in research and development expenses. The following table indicates the amount incurred for each of our significant research programs and for other identified research and development activities during the three months ended March 31, 2018 and 2017. The amounts disclosed in the following table reflect direct research and development costs, license fees associated with the underlying technology and an allocation of indirect research and development costs to each program.

Clinical Development Programs

CDX-1140

CDX-1140 is a fully human agonist monoclonal antibody targeted to CD40, a key activator of immune response, which is found on dendritic cells, macrophages and B cells and is also expressed on many cancer cells. Potent CD40 agonist antibodies have shown encouraging results in early clinical studies; however, systemic toxicity associated with broad CD40 activation has limited their dosing. CDX-1140 has unique properties relative to other CD40 agonist antibodies: potent agonist activity is independent of Fc receptor interaction, contributing to more consistent, controlled immune activation; CD40L binding is not blocked, leading to potential synergistic effects of agonist activity near activated T cells in lymph nodes and tumors; and the antibody does not promote cytokine production in whole blood assays. CDX-1140 has shown direct anti-tumor activity in preclinical models of lymphoma. Preclinical studies of CDX-1140 clearly demonstrate strong immune activation effects and low systemic toxicity and support the design of the Phase 1 study to rapidly identify the dose for characterizing single-agent and combination activity.

We initiated a Phase 1 study of CDX-1140 in November 2017. This study, which is expected to enroll up to approximately 105 patients with recurrent, locally advanced or metastatic solid tumors, is designed to determine the maximum tolerated dose, or MTD, during a dose-escalation phase (0.01 to 3.0 mg/kg once every four weeks until confirmed progression or intolerance) and to recommend a dose level for further study in a subsequent expansion phase. The expansion is designed to further evaluate the tolerability and biologic effects of selected dose(s) of CDX-1140 in specific tumor types. Secondary objectives include assessments of safety and tolerability, pharmacodynamics, pharmacokinetics, immunogenicity and additional measures of anti-tumor activity, including clinical benefit rate. We believe that the potential for CDX-1140 will be best defined in combination studies with other immunotherapies or conventional cancer treatments. We are currently exploring plans for potential combination arms with CDX-301 and varlilumab.

CDX-3379

CDX-3379 is a human monoclonal antibody with half-life extension designed to block the activity of ErbB3 (HER3). We believe ErbB3 may be an important receptor regulating cancer cell growth and survival as well as resistance to targeted therapies and is expressed in many cancers, including head and neck, thyroid, breast, lung and gastric cancers, as well as melanoma. We believe the proposed mechanism of action for CDX-3379 sets it apart from other drugs in development in this class due to its ability to block both

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ligand-independent and ligand-dependent ErbB3 signaling by binding to a unique epitope. It has a favorable pharmacologic profile, including a longer half-life and slower clearance relative to other drug candidates in this class. We believe CDX-3379 also has potential to enhance anti-tumor activity and/or overcome resistance in combination with other targeted and cytotoxic therapies to directly kill tumor cells. Tumor cell death and the ensuing release of new tumor antigens has the potential to serve as a focus for combination therapy with immuno-oncology approaches, even in refractory patients. CDX-3379 has been evaluated in three Phase 1 studies for the treatment of multiple solid tumors that express ErbB3 and is currently being evaluated is a Phase 2 study in combination with Erbitux in Erbitux-resistant, advanced head and neck squamous cell carcinoma.

A Phase 1a/1b study of CDX-3379 was conducted in solid tumors. The study included a single-agent, dose-escalation portion and combination expansion cohorts. The single-agent, dose-escalation portion of the study did not identify an MTD, and there were no dose limiting toxicities. Four combination arms across multiple tumor types were added to evaluate CDX-3379 with several drugs that target EGFR, HER2 or BRAF. They include combinations with Erbitux ®  (n=16), Tarceva ®   (n=8), Zelboraf ®   (n=9) and Herceptin ®   (n=10). Patients had advanced disease and were generally heavily pretreated. Across the combination arms, the most frequent adverse events were diarrhea, nausea, rash and fatigue. Objective responses were observed in the Erbitux and Zelboraf combination arms. In the Erbitux arm, there was one durable complete response in a patient with head and neck cancer, who had been previously treated with Erbitux and was refractory. In the Zelboraf arm, there were two partial responses in patients who had lung cancer, one of whom had been previously treated with Tafinlar ®   and was considered refractory, as well as a single timepoint partial response in a patient with thyroid cancer. Initial data were presented at the 2016 ASCO Annual Meeting.

In April 2018, results from a window-of-opportunity study evaluating the effect of CDX-3379 on potential biomarkers in patients with head and neck squamous cell carcinoma (HNSCC) were presented at the American Association for Cancer Research (AACR) Annual Meeting. The study enrolled 12 patients with newly diagnosed HNSCC who received two doses of CDX-3379, at a two-week interval prior to tumor resection. CDX-3379 reduced phosphorylated ErbB3 (pErbB3) levels in 83% (10/12) of patient samples, with greater than or equal to 50% decreases in 58% of patients (7/12), which met the primary study objective. Stable disease was observed in 92% (11/12) of patients prior to surgery, and a patient with HPV-negative disease experienced significant tumor shrinkage (92% in primary tumor; 26% in metastatic lesion). CDX-3379 was well-tolerated, and no treatment-related adverse events were observed.

Preclinical data from the combination of CDX-3379 and Erbitux in xenograft models of head and neck squamous cell carcinoma were also presented at the AACR Annual Meeting in April 2018. Combining CDX-3379 and Erbitux inhibited tumor growth more potently than Erbitux alone. Mechanistic studies demonstrated a reduction of PD-L1 expression from the combination.

We have initiated an open-label Phase 2 study in combination with Erbitux in approximately 30 patients with human papillomavirus (HPV) negative, Erbitux -resistant, advanced head and neck squamous cell carcinoma who have previously been treated with an anti-PD1 checkpoint inhibitor, a population with limited options and a particularly poor prognosis. We opened the study to enrollment in November 2017. The primary objective of the study is objective response rate. Secondary objectives include assessments of clinical benefit response (CBR), duration of response (DOR), progression-free survival (PFS) and overall survival (OS), and safety and pharmacokinetics associated with the combination.

Varlilumab

Varlilumab is a fully human agonist monoclonal antibody that binds to and activates CD27, a critical co-stimulatory molecule in the immune activation cascade. We believe varlilumab works primarily by stimulating T cells, an important component of a person’s immune system, to attack cancer cells. Restricted expression and regulation of CD27 enables varlilumab specifically to activate T cells, resulting in an enhanced immune response with the potential for a favorable safety profile. In preclinical studies, varlilumab has been shown to directly kill or inhibit the growth of CD27 expressing lymphomas and leukemias in in vitro and in vivo models. We have entered into license agreements with the University of Southampton, UK for intellectual property to use anti-CD27 antibodies and with Medarex (acquired by Bristol-Myers Squibb Company, or BMS) for access to the UltiMab technology to develop and commercialize human antibodies to CD27. Varlilumab was initially studied as a single-agent to establish a safety profile and assess immunologic and clinical activity in patients with cancer, but we believe the greatest opportunity for varlilumab is as an immune activator in combination with other agents. Currently, we are focusing our efforts on a Phase 1/2 clinical trial being conducted in collaboration with BMS and their PD-1 immune checkpoint inhibitor, Opdivo. Varlilumab is also being studied in ongoing and planned investigator-sponsored and collaborative studies, and we are evaluating the inclusion of varlilumab in additional Celldex-sponsored combination studies.

Single-Agent Phase 1 Study:   In an open-label Phase 1 study of varlilumab in patients with selected malignant solid tumors or hematologic cancers, varlilumab demonstrated an acceptable safety profile and induced immunologic activity in patients that is consistent with both its proposed mechanism of action and data in preclinical models. A total of 90 patients received varlilumab in the

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study at multiple clinical sites in the U.S. In both the solid tumor and hematologic dose escalations, the pre-specified maximum dose level (10 mg/kg) was reached without identification of an MTD. The majority of adverse events, or AEs, related to treatment have been mild to moderate (Grade 1/2) in severity, and no significant immune-mediated adverse events typically associated with checkpoint blockade have been observed. Durable, multi-year clinical benefit was demonstrated in select patients without additional anti-cancer therapy. Final results from the study in patients with solid tumors were published in the Journal of Clinical Oncology in April 2017.

Phase 1/2 Varlilumab/Opdivo Combination Study:   In 2014, we entered into a clinical trial collaboration with BMS to evaluate the safety, tolerability and preliminary efficacy of varlilumab and Opdivo, BMS’ PD-1 immune checkpoint inhibitor, in a Phase 1/2 study. Under the terms of this clinical trial collaboration, BMS made a one-time payment to us of $5.0 million, and the companies amended the terms of our existing license agreement with Medarex (acquired by BMS) related to our CD27 program, whereby certain future milestone payments were waived and future royalty rates were reduced that may have been due from us to Medarex. In return, BMS was granted a time-limited right of first negotiation if we wish to out-license varlilumab. The companies also agreed to work exclusively with each other to explore anti-PD-1 antagonist antibody and anti-CD27 agonist antibody combination regimens. The clinical trial collaboration provides that the companies will share development costs and that we will be responsible for conducting the Phase 1/2 study.

The Phase 1/2 study was initiated in January 2015 and is being conducted in adult patients with multiple solid tumors to assess the safety and tolerability of varlilumab at varying doses when administered with Opdivo, followed by a Phase 2 expansion to evaluate the activity of the combination in disease specific cohorts.

Data (n=36) from the Phase 1 dose-escalation portion of the study were presented in an oral presentation at the 2017 ASCO Annual Meeting. The combination was well tolerated at all varlilumab dose levels tested without any evidence of increased autoimmunity or inappropriate immune activation. Marked changes in the tumor microenvironment, which have been shown to correlate with a greater magnitude of treatment effect from checkpoint inhibitors in other clinical studies, and additional evidence of immune activity were observed.

The Phase 2 portion of the study opened to enrollment in April 2016 and completed enrollment in January 2018 with cohorts in colorectal cancer (n=21), ovarian cancer (n=58), head and neck squamous cell carcinoma (n=24), renal cell carcinoma (n=14) and glioblastoma (n=22). The primary objective of the Phase 2 cohorts is objective response rate, or ORR, except glioblastoma, where the primary objective is the rate of 12-month OS. Data from the colorectal and ovarian cancer cohorts will be presented in an oral presentation at the 2018 ASCO Annual Meeting, and data from remaining cohorts will be presented at future medical meetings in 2018.

We intend to explore varlilumab externally through several investigator-initiated studies and internally through inclusion in combination studies.

CDX-301

CDX-301, a recombinant FMS-like tyrosine kinase 3 ligand, or Flt3L, is a hematopoietic cytokine that uniquely expands dendritic cells and hematopoietic stem cells, and in combination with other agents may potentiate anti-tumor responses. Depending on the setting, cells expanded by CDX-301 promote either enhanced or permissive immunity. CDX-301 is in clinical development for multiple cancers, in combination with treatments that release tumor antigens, such as radiation therapy. We licensed CDX-301 from Amgen Inc. and believe CDX-301 may hold significant opportunity for synergistic development in combination with other proprietary molecules in our portfolio, as well as with approved or investigational therapies for the treatment of cancer.

A Phase 1 study of CDX-301 evaluated seven different dosing regimens of CDX-301 to determine the appropriate dose for further development based on safety, tolerability and biological activity. The data from the study were consistent with previous clinical experience and demonstrated that CDX-301 has an acceptable safety profile to date and can mobilize dendritic cell and hematopoietic stem cell populations in healthy volunteers. The study was published in the journal Bone Marrow Transplantation in 2015.

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CDX-301 is being studied in ongoing and planned investigator-sponsored and collaborative studies and is planned for combination study with CDX-1140 in the ongoing Phase 1 trial of CDX-1140. Development of CDX-301 in combination with glembatumumab vedotin in metastatic melanoma has been discontinued as part of the pipeline prioritization conducted in April 2018.

Glembatumumab vedotin

On April 16, 2018, we announced that our randomized, Phase 2b METRIC Study of glembatumumab vedotin compared to Xeloda (capecitabine) in patients with metastatic triple-negative breast cancers that overexpress gpNMB failed to meet its primary endpoint, progression-free survival (PFS) as assessed by an independent, central reading of patient scans (Hazard ratio = 0.95; median PFS: glembatumumab vedotin 2.9 months vs. Xeloda 2.8 months; p=0.76). Based on these results, we also made the decision to discontinue the glembatumumab vedotin program across all indications. Study closure activities are in process and following completion of these activities, we do not expect to incur significant expenses related to spend for glembatumumab vedotin.

CDX-014

CDX-014 is a human monoclonal ADC that targets T cell immunoglobulin and mucin domain 1, or TIM-1, and uses Seattle Genetics’ MMAE toxin and linker technology. CDX-014 was being studied in a Phase 1/2 trial in patients with both clear cell and papillary renal cell carcinoma and ovarian clear cell carcinoma. To conserve resources, as part of our pipeline prioritization conducted in April 2018, we are discontinuing development of CDX-014.

CDX-1401

CDX-1401 is an NY-ESO-1-antibody fusion protein for immunotherapy in multiple solid tumors. Its potential activity was being explored in investigator-sponsored and collaborative studies. To conserve resources, as part of our pipeline prioritization conducted in April 2018, we are discontinuing development of CDX-1401, including in collaborative studies.

CRITICAL ACCOUNTING POLICIES

See Note 3 to the unaudited condensed consolidated financial statements included elsewhere in this Quarterly Report on Form 10-Q for information regarding newly adopted and recent accounting pronouncements. See also Note 2 to our financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2017 for a discussion of our critical accounting policies. There have been no material changes to such critical accounting policies except for the adoption of the updated revenue recognition standard on January 1, 2018. We believe our most critical accounting policies include accounting for business combinations, revenue recognition, intangible and long-lived assets, research and development expenses and stock-based compensation expense.

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Net Loss

The $83.9 million increase in net loss for the three months ended March 31, 2018, as compared to the three months ended March 31, 2017, was primarily the result of the non-cash charges related to fully impairing our goodwill asset and Glemba related intangible assets. This increase was partially offset by (i) gain on contingent consideration related to Glemba related milestones and discount rates and (ii) decreases in both research and development and general and administrative expenses.

Revenue

The $0.4 million increase in product development and licensing agreements revenue for the three months ended March 31, 2018, as compared to the three months ended March 31, 2017, was primarily due to an increase in reimbursable clinical trial expenses related to our BMS agreement. The $2.1 million increase in contracts and grants revenue for the three months ended March 31, 2018, as compared to the three months ended March 31, 2017, was primarily related to our contract manufacturing and research and development agreements with International AIDS Vaccine Initiative and Frontier Biotechnologies, Inc. signed in the second quarter of 2017.

Research and Development Expense

Research and development expenses consist primarily of (i) personnel expenses, (ii) laboratory supply expenses relating to the development of our technology, (iii) facility expenses, (iv) license fees and (v) product development expenses associated with our drug candidates as follows:

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Personnel expenses primarily include salary, benefits, stock-based compensation and payroll taxes. The $1.0 million decrease in personnel expenses for the three months ended March 31, 2018, as compared to the three months ended March 31, 2017, was primarily due to decreases in salaries expense and lower stock-based compensation expense. We expect personnel expenses to decrease over the next twelve months due to the restructuring the Company announced in April 2018.

Laboratory supplies expenses include laboratory materials and supplies, services, and other related expenses incurred in the development of our technology. The $0.3 million increase in laboratory supply expenses for the three months ended March 31, 2018, as compared to the three months ended March 31, 2017, was primarily due to higher laboratory materials and supplies purchases. We expect laboratory supplies expenses to decrease over the next twelve months, although there may be fluctuations on a quarterly basis.

Facility expenses include depreciation, amortization, utilities, rent, maintenance and other related expenses incurred at our facilities. The $0.4 million decrease in facility expenses for the three months ended March 31, 2018, as compared to the three months ended March 31, 2017, was primarily due to lower depreciation expense of $0.3 million. We expect facility expenses to remain relatively consistent over the next twelve months, although there may be fluctuations on a quarterly basis.

License fee expenses include annual license maintenance fees and milestone payments due upon the achievement of certain development, regulatory and/or commercial milestones. The $0.1 million decrease in license fee expenses for the three months ended March 31, 2018, as compared to the three months ended March 31, 2017, was due to the timing of certain development and/or regulatory milestones achieved by our drug candidates. We expect license fee expense to remain relatively consistent over the next twelve months, although there may be fluctuations on a quarterly basis.

Product development expenses include clinical investigator site fees, external trial monitoring costs, data accumulation costs, contracted research and outside clinical drug product manufacturing. The $2.6 million decrease in product development expenses for the three months ended March 31, 2018, as compared to the three months ended March 31, 2017, was primarily due to (i) lower clinical trial costs of $1.3 million related to varlilumab, Glemba and CDX-3379 programs and (ii) lower contract research costs of $0.8 million related to the CDX-1140, CDX-3379 and anti-KIT programs. The amount of product development expenses incurred over the next twelve months is expected to decrease due to the discontinuation of the Glemba and CDX-014 programs.

General and Administrative Expense

The $1.6 million decrease in general and administrative expenses for the three months ended March 31, 2018, as compared to the three months ended March 31, 2017, was primarily due to lower personnel expenses of $0.7 million, lower commercial planning costs of $0.4 million and lower legal, consulting and professional services expense of $0.3 million. The amount of general and administrative expenses incurred over the next twelve months is expected to decrease due to the restructuring the Company announced in April 2018.

Gain on Fair Value Remeasurement of Contingent Consideration

The $13.6 million gain on fair value remeasurement of contingent consideration for the three months ended March 31, 2018 was due to a reduction in fair value primarily due to updated assumptions for Glemba-related milestones and discount rates. See Note 4 to the financial statements included herein for a discussion of the contingent consideration that may be payable related to the Kolltan acquisition.

Amortization Expense

Amortization expense for the three months ended March 31, 2018 was consistent with the three months ended March 31, 2017. The remaining balance of our intangible assets subject to amortization was fully impaired for the three months ended March 31, 2018 due to the discontinuation of the Glemba program.

Investment and Other Income, Net

The $0.1 million decrease in investment and other income, net for the three months ended March 31, 2018, as compared to the three months ended March 31, 2017, was primarily due to lower levels of cash and investment balances, partially offset by higher interest rates on fixed income investments. We anticipate investment income to decrease over the next twelve months due to lower levels of cash and investment balances.

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LIQUIDITY AND CAPITAL RESOURCES

Our cash equivalents are highly liquid investments with a maturity of three months or less at the date of purchase and consist primarily of investments in money market mutual funds with commercial banks and financial institutions. We maintain cash balances with financial institutions in excess of insured limits. We do not anticipate any losses with respect to such cash balances. We invest our excess cash balances in marketable securities, including municipal bond securities, U.S. government agency securities and high-grade corporate bonds that meet high credit quality standards, as specified in our investment policy. Our investment policy seeks to manage these assets to achieve our goals of preserving principal and maintaining adequate liquidity.

The use of our cash flows for operations has primarily consisted of salaries and wages for our employees; facility and facility-related costs for our offices, laboratories and manufacturing facility; fees paid in connection with preclinical studies, clinical studies, contract manufacturing, laboratory supplies and services; and consulting, legal and other professional fees. To date, the primary sources of cash flows from operations have been payments received from our collaborative partners and from government  entities and payments received for contract manufacturing and research and development services provided by us. The timing of any new contract manufacturing and research and development agreements, collaboration agreements, government contracts or grants and any payments under these agreements, contracts or grants cannot be easily predicted and may vary significantly from quarter to quarter.

At March 31, 2018, our principal sources of liquidity consisted of cash, cash equivalents and marketable securities of $123.2 million. We have had recurring losses and incurred a loss of $118.1 million for the three months ended March 31, 2018. Net cash used in operations for the three months ended March 31, 2018 was $28.0 million. We believe that the cash, cash equivalents and marketable securities at March 31, 2018, combined with the anticipated proceeds from future sales of our common stock under the Cantor agreement, are sufficient to meet estimated working capital requirements and fund planned operations through 2020. This could be impacted if we elected to pay Kolltan contingent milestones, if any, in cash.

During the next twelve months, we will take further steps to raise additional capital to meet our liquidity needs. Our capital raising activities may include, but may not be limited to, one or more of the following: the licensing of drug candidates with existing or new collaborative partners, possible business combinations, issuance of debt, or the issuance of common stock or other securities via private placements or public offerings. While we may seek capital through a number of means, there can be no assurance that additional financing will be available on acceptable terms, if at all, and our negotiating position in capital-raising efforts may worsen as existing resources are used. There is also no assurance that we will be able to enter into further collaborative relationships. Additional equity financings may be dilutive to our stockholders; debt financing, if available, may involve significant cash payment obligations and covenants that restrict our ability to operate as a business; and licensing or strategic collaborations may result in royalties or other terms which reduce our economic potential from products under development. Our ability to continue funding our planned operations into and beyond twelve months from the issuance date is also dependent on the timing and manner of payment of future contingent milestones from the Kolltan acquisition, in the event that we achieve the drug candidate milestones related to those payments. We may decide to pay those milestone payments in cash, shares of our common stock or a combination thereof. If we are unable to raise the funds necessary to meet our liquidity needs, we may have to delay or discontinue the development of one or more programs, discontinue or delay ongoing or anticipated clinical trials, license out programs earlier than expected, raise funds at a significant discount or on other unfavorable terms, if at all, or sell all or a part of our business.

Operating Activities

Net cash used in operating activities was $28.0 million for the three months ended March 31, 2018 as compared to $35.3 million for the three months ended March 31, 2017. The decrease in net cash used in operating activities was primarily due to an increase in revenue and decreases in both general and administrative and research and development expenses. We expect that cash used in operating activities will decrease over the next twelve months primarily due to the restructuring we announced in April 2018, although there may be fluctuations on a quarterly basis.

We have incurred and will continue to incur significant costs in the area of research and development, including preclinical studies and clinical trials, as our drug candidates are developed. We plan to spend significant amounts to progress our current drug candidates through the clinical trial and commercialization process as well as to develop additional drug candidates. As our drug candidates progress through the clinical trial process, we may be obligated to make significant milestone payments.

Investing Activities

Net cash provided by investing activities was $15.5 million for the three months ended March 31, 2018 as compared to $22.4 million for the three months ended March 31, 2017. The decrease in net cash provided by investing activities was primarily due to net sales and maturities of marketable securities for the three months ended March 31, 2018 of $15.8 million as compared to $22.8 million for the three months ended March 31, 2017.

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Financing Activities

Net cash provided by financing activities was $12.1 million for the three months ended March 31, 2018 as compared to $12.9 million for the three months ended March 31, 2017. Net proceeds from stock issuances pursuant to employee benefit plans were $0.4 million during the three months ended March 31, 2018 as compared to $0.1 million for the three months ended March 31, 2017.

In May 2016, we entered into an agreement with Cantor Fitzgerald & Co. (“Cantor”) to allow us to issue and sell shares of our common stock having an aggregate offering price of up to $60.0 million from time to time through Cantor, acting as agent. In November 2017, we filed a prospectus supplement registering the offer and sale of shares of common stock of up to an additional $75.0 million under the agreement with Cantor. During the three months ended March 31, 2018, we issued 4,692,024 shares of common stock under this controlled equity offering sales agreement with Cantor resulting in net proceeds of $11.7 million after deducting commission and offering expenses. At March 31, 2018, we had $55.5 million remaining in aggregate gross offering price available under the Cantor agreement.

Aggregate Contractual Obligations

The disclosures relating to our contractual obligations reported in our Annual Report on Form 10-K for the year ended December 31, 2017 which was filed with the SEC on March 7, 2018 have not materially changed since we filed that report.

OFF-BALANCE SHEET ARRANGEMENTS

We did not have during the periods presented, and we do not currently have, any off-balance sheet arrangements, as defined under SEC rules.