Commitments and Contingencies | 6. Commitments and Contingencies Operating Leases Prior to December 31, 2012, the Company entered into an operating lease in New York, NY, consisting of 6,251 square feet of office space. In accordance with this agreement, the Company entered into a letter of credit in the amount of $388 thousand, naming the Company’s landlord as beneficiary. In January 2012, the Company amended the lease agreement, adding 1,008 square feet of office space. As of December 31, 2012, the Company occupied 7,259 square feet of space in New York, NY, and maintained a $388 thousand letter of credit. The collateral for the letter of credit is restricted cash and recorded in other non-current assets on the balance sheet as of June 30, 2015. The lease for office space in New York, NY expires in October 2018. On October 17, 2013, the Company entered into a sublease agreement to lease all of its New York office to a subtenant. The Company remains primarily liable to pay rent on the original lease. The Company recorded a loss on the sublease in the amount of $729 thousand for the year ended December 31, 2013, representing the remaining contractual obligation of $2.3 million, less $1.6 million in payments from its subtenant. The Company retired assets as a result of this sublease with a net book value of $392 thousand, and recorded a loss on disposal of fixed assets for the same amount for the year ended December 31, 2013. The Company continues to maintain the $388 thousand letter of credit in respect of the New York office space. Prior to December 31, 2012, the Company entered into separate operating lease agreements for various spaces in a building in Boston, MA. That space consisted of 5,249 square feet on the first floor, 8,538 square feet on the second floor, and 6,959 square feet on the third floor. In June 2012, the Company re-negotiated a master lease for the entire Boston office space, whereby it added 9,800 square feet of office space on the fourth floor, surrendered 4,113 square feet from the second floor, and incorporated all three lease agreements under the same master agreement expiring in August 2016. The Company provided an additional $41 thousand security deposit for the additional space on the fourth floor. As of June 30, 2015, a total security deposit of $127 thousand is included in deposits on the balance sheet. On August 30, 2013, the Company entered into a sublease agreement to lease 5,249 square feet in its Boston office to a subtenant. The Company remains liable to pay rent on the original lease. The Company recorded a loss on the sublease in the amount of $42 thousand for the year ended December 31, 2013, representing the remaining contractual obligation of $367 thousand, less $325 thousand in payments from its subtenant. This sublease tenant vacated the leased premises in October 2014. At December 31, 2014, the Company applied the $20 thousand deposit received from the sublease tenant against its outstanding rent obligation. On March 31, 2015, the company recorded a loss of on the first floor sublease of $167 thousand. On May 22, 2015, the Company again subleased the vacant office space for approximately $105 thousand through August 2016 in which the tenant provided a security deposit of $17 thousand. Since the prior lease obligation has been fully expensed, rent received from the tenant will reduce current rent expense. At June 30, 2015, the Company occupies 21,184 square feet of space in its Boston, MA office. Total rent expense was approximately $477 thousand and $305 thousand for the six months ended June 30, 2015 and 2014, respectively. The Company records rent expense on a straight-line basis over the term of the lease. Accordingly, the Company has recorded a liability for deferred rent at June 30, 2015 and December 31, 2014 of $869 thousand ($399 thousand current and $470 thousand long-term) and $850 thousand ($280 thousand current and $570 thousand long-term), respectively, which is recorded in deferred rent on the balance sheet. License Agreements Exclusive Channel Partner Agreement with Intrexon Corporation On January 6, 2011, the Company entered into an Exclusive Channel Partner Agreement, or the Channel Agreement, with Intrexon Corporation, or Intrexon that governs a “channel partnering” arrangement in which the Company uses Intrexon’s technology directed towards in vivo The Channel Agreement grants the Company a worldwide license to use patents and other intellectual property of Intrexon in connection with the research, development, use, importing, manufacture, sale, and offer for sale of products involving DNA administered to humans for expression of anti-cancer effectors for the purpose of treatment or prophylaxis of cancer, which is collectively referred to as the ZIOPHARM Products. Such license is exclusive with respect to any clinical development, selling, offering for sale or other commercialization of ZIOPHARM Products, and otherwise is non-exclusive. Subject to limited exceptions, the Company may not sublicense these rights without Intrexon’s written consent. Under the Channel Agreement, and subject to certain exceptions, the Company is responsible for, among other things, the performance of the Cancer Program, including the development, commercialization and certain aspects of manufacturing of ZIOPHARM Products. Intrexon is responsible for the costs of establishing manufacturing capabilities and facilities for the bulk manufacture of products developed under the Cancer Program, certain other aspects of manufacturing and costs of discovery-stage research with respect to platform improvements and costs of filing, prosecution and maintenance of Intrexon’s patents. Subject to certain expense allocations and other offsets provided in the Channel Agreement, the Company will pay Intrexon on a quarterly basis 50% of net profits derived in that quarter from the sale of ZIOPHARM Products, calculated on a ZIOPHARM Product-by- ZIOPHARM Product basis. The Company has likewise agreed to pay Intrexon on a quarterly basis 50% of revenue obtained in that quarter from a sublicensor in the event of a sublicensing arrangement. In addition, in partial consideration for each party’s execution and delivery of the Channel Agreement, the Company entered into a stock purchase agreement with Intrexon. Upon termination of the Channel Agreement, the Company may continue to develop and commercialize any ZIOPHARM Product that, at the time of termination: • Is being commercialized by the Company; • Has received regulatory approval; • Is a subject of an application for regulatory approval that is pending before the applicable regulatory authority; or • Is the subject of at least an ongoing Phase 2 clinical trial (in the case of a termination by Intrexon due to an uncured breach or a voluntary termination by the Company), or an ongoing Phase 1 clinical trial in the field (in the case of a termination by the Company due to an uncured breach or a termination by Intrexon following an unconsented assignment by the Company or its election not to pursue development of a Superior Therapy (as defined in the Channel Agreement)). The Company’s obligation to pay 50% of net profits or revenue described above with respect to these “retained” products will survive termination of the Channel Agreement. On March 27, 2015, the Company and Intrexon entered into the Exclusive Channel Partner Amendment, or ECP Amendment, amending the Channel Agreement. The ECP Amendment modifies the scope of the parties’ collaboration under the Channel Agreement in connection with the Ares Trading Agreement discussed below. Pursuant to the ECP Amendment, the chimeric antigen receptor T-Cell products to be developed and commercialized pursuant to the Ares Trading Agreement shall be included within the Intrexon/ZIOPHARM collaboration under the Channel Agreement. The ECP Amendment provides that Intrexon will pay to the Company fifty percent of all payments Intrexon receives for upfronts, milestones and royalties under the Ares Trading Agreement. License Agreement—The University of Texas M. D. Anderson Cancer Center On January 13, 2015, the Company, together with Intrexon, entered into a License Agreement, or the MD Anderson License, with The University of Texas M.D. Anderson Cancer Center, or MD Anderson. Pursuant to the MD Anderson License, the Company and Intrexon hold an exclusive, worldwide license to certain technologies owned and licensed by MD Anderson including technologies relating to novel chimeric antigen receptor (CAR) T-cell therapies, non-viral gene transfer systems, genetic modification and/or propagation of immune cells and other cellular therapy approaches Natural Killer, or NK Cells and T cell receptors, or TCR’s arising from the laboratory of Laurence Cooper, M.D., Ph.D., who became the Chief Executive Officer of the Company on May 7, 2015 and was formerly a professor of pediatrics at MD Anderson and now currently a visiting scientist under that institution’s policies, as well as either co-exclusive or non-exclusive licenses under certain related technologies. Pursuant to the terms of the MD Anderson License, MD Anderson received consideration consisting of $50 million in shares of the Company’s common stock (or 10,124,561 shares), and $50 million in shares of Intrexon’s common stock, in each case based on a trailing 20 day volume weighted average of the closing price of the Company’s and Intrexon’s common stock ending on the date prior to the announcement of the entry into the MD Anderson License, collectively referred to as the License Shares, pursuant to the terms of the License Shares Securities Issuance Agreement described below. The License Shares were issued to MD Anderson on March 11, 2015 pursuant to the terms of the MD Anderson License. In addition, pursuant to the MD Anderson License, MD Anderson has agreed to transfer to the Company certain existing research programs described in the MD Anderson License and to grant to Intrexon and the Company certain additional technology rights related thereto. In connection with such transfer, the terms of the MD Anderson License also require the Company and Intrexon to enter into a research and development agreement with MD Anderson pursuant to which the Company will provide funding for certain research development, preclinical and clinical activities of MD Anderson for a period of three years, in an amount between $15 and $20 million per year. The first quarterly payment of $3.75 million due under this arrangement was paid on April 13, 2015 and is included in other current assets at June 30, 2015. The Company also made the second quarterly payment of $3.75 million on July 13, 2015. The term of the MD Anderson License expires on the last to occur of (a) the expiration of all patents licensed thereunder, or (b) the twentieth anniversary of the date of the License; provided, however, that following the expiration of the term of the MD Anderson License, the Company and Intrexon shall then have a fully-paid up, royalty free, perpetual, irrevocable and sublicensable license to use the licensed intellectual property thereunder. After ten years from the date of the MD Anderson License and subject to a 90-day cure period, MD Anderson will have the right to convert the MD Anderson License into a non-exclusive license if the Company and Intrexon are not using commercially reasonable efforts to commercialize the licensed intellectual property on a case-by-case basis. After five years from the date of the MD Anderson License and subject to a 180-day cure period, MD Anderson will have the right to terminate the MD Anderson License with respect to specific technology(ies) funded by the government or subject to a third party contract if the Company and Intrexon are not meeting the diligence requirements in such funding agreement or contract, as applicable. MD Anderson may also terminate the agreement with written notice upon material breach by the Company and Intrexon, if such breach has not been cured within 60 days of receiving such notice. In addition, the MD Anderson License will terminate upon the occurrence of certain insolvency events for both the Company and Intrexon and may be terminated by the mutual written agreement of the Company, Intrexon and MD Anderson. On January 9, 2015, in order to induce MD Anderson to enter into the MD Anderson License on an accelerated schedule, the Company and Intrexon entered into a letter agreement, or the Letter Agreement, pursuant to which MD Anderson received consideration of $7.5 million in shares of common stock (or 1,597,602 shares), and $7.5 million in shares of Intrexon’s common stock, in each case based on a trailing 20 day volume weighted average of the closing price of the Company’s and Intrexon’s common stock ending on the date prior to the execution of the Letter Agreement, collectively referred to as the Incentive Shares, in the event that the MD Anderson License was entered into on or prior to 8:00 am Pacific Time on January 14, 2015, referred to as the Accelerated Closing Deadline. The Incentive Shares were issued to MD Anderson on March 11, 2015 pursuant to the terms of the Incentive Shares Securities Issuance Agreement described below. In connection with the License and the issuance of the License Shares and the Incentive Shares, on January 13, 2015, the Company and MD Anderson entered into a Registration Rights Agreement, or the Registration Rights Agreement, pursuant to which the Company agreed to file a “resale” registration statement, or the Registration Statement, registering the resale of the License Shares, the Incentive Shares and any other shares of the Company’s common stock held by MD Anderson on the date that the Registration Statement is filed Under the Registration Rights Agreement, the Company is obligated to maintain the effectiveness of the Registration Statement until all securities therein are sold or are otherwise can be sold pursuant to Rule 144, without any restrictions. A prospectus supplement under the Company’s already effective registration statement on Form S-3 (File No. 333-201826), was filed on April 1, 2015 in satisfaction of the Company’s obligations under the Registration Rights Agreement. The Company has determined that the rights acquired in the MD Anderson License represent in process research and development with no alternative future use. Accordingly, the Company recorded a charge of $67.3 million to research and development expense representing the fair value of the 11,722,163 shares of its common stock on the date the MD Anderson License was executed. Ares Trading License and Collaboration Agreement On March 27, 2015, the Company and Intrexon entered into the Ares Trading Agreement with Ares Trading, a company within the pharmaceutical business of Merck KGaA, Darmstadt, Germany, through which the parties established a collaboration for the research and development and commercialization of Products (as defined below) for the prophylactic, therapeutic, palliative or diagnostic use for cancer in humans, which is referred to as the Field. The Ares Trading Agreement provides for the establishment of committees composed of Ares Trading and Intrexon representatives that will govern activities in, among others, the areas of project establishment, research plans and intellectual property. The Ares Trading Agreement grants Ares Trading an exclusive, worldwide, royalty-bearing, sub-licensable license under the Company’s and Intrexon’s patents, know-how and proprietary platform of research tools and technology necessary for the Company and Intrexon to perform their tasks directed towards the design, identification, culturing, and/or production of genetically modified cells to (a) generate and test Chimeric Antigen Receptor T-Cell Products (as defined in the Ares Trading Agreement) solely for the development, regulatory approval and commercialization of Products containing such Chimeric Antigen Receptor T-Cell Products pursuant to the licenses granted in clauses (b) and (c) of this paragraph; (b) develop and commercialize Products in the Field, worldwide, provided that such Products are not Out-of-Scope Products (as defined below) where Ares Trading has not exercised its Option (as defined below); and (c) commercialize the chimeric antigen receptor for Products. Exclusivity During the term of the Ares Trading Agreement, subject to the change in control provisions described below, neither the Company nor Intrexon may, directly or indirectly, clinically develop or commercialize any chimeric antigen receptor or Chimeric Antigen Receptor T-Cell Products in the Field other than pursuant to the Ares Trading Agreement, or grant any third party the right to research, develop or commercialize any chimeric antigen receptor or Chimeric Antigen Receptor T-Cell Products in the Field, other than pursuant to the Ares Trading Agreement, or, in the case of Intrexon, pursuant to its rights of independent development as described below. In addition, neither the Company nor Intrexon may, directly or indirectly, clinically develop or commercialize any chimeric antigen receptor or Chimeric Antigen Receptor T-Cell Products in the Field against a Target in animal health. If Ares Trading fails to exercise its Option with respect to an Out-of-Scope Target as described below, Ares Trading may not directly or indirectly, clinically develop or commercialize any Chimeric Antigen Receptor T-Cell Product against such Out-of-Scope Target under the Ares Trading Agreement. Consideration and Royalties Ares Trading paid an upfront fee of $115.0 million to Intrexon as consideration for entry into the Ares Trading Agreement. Intrexon will pay 50% of the fee to the Company in accordance with the ECP Amendment, discussed above. Ares Trading will, pursuant to the terms of the Ares Trading Agreement, pay Intrexon certain fees for the research and development activities related to the Products. Subject to certain expense allocations, Ares Trading will pay Intrexon royalties ranging from the lower-single digits to the lower-double digits of the net sales derived from the sale of Products developed under the Ares Trading Agreement, on a Product-by-Product and a country-by-country basis, which royalties are subject to increase under the Option, as described below. Royalty amounts are subject to adjustment, and the royalty term will terminate, based upon certain conditions as further described in the Ares Trading Agreement. In accordance with the ECP Amendment, Intrexon will pay to the Company 50% of all royalties that it receives under the Ares Trading Agreement. The Agreement initially covers two Targets (as defined below) for which Ares Trading must pay a cash fee. Ares Trading may elect additional Targets by paying Intrexon a cash fee. Milestones Ares Trading has to make certain payments to Intrexon upon Ares Trading’s achievement of designated milestones. Intrexon will pay 50% of all milestones that it receives under the Ares Trading Agreement to the Company under the ECP Amendment. These payments are payable in cash and are generally due within 30 days of the achievement of the relevant milestone. Development and commercial milestones Technical milestones Responsibilities For each Target selected by Ares Trading, Intrexon is responsible for conducting research and development and the manufacture and supply of Products for use in each Phase 1 clinical trial. Ares Trading is responsible for manufacturing and supplying Products for development use after each Phase 1 clinical trial and for commercialization in the Field. “Product” means (a) any pharmaceutical product containing a Chimeric Antigen Receptor T-Cell Product developed by Intrexon under a research program for which the joint steering committee established under the Ares Trading Agreement determines to file an investigational new drug application or under a research program for which Ares Trading has exercised the Option (as defined below) or (b) any pharmaceutical product containing a Chimeric Antigen Receptor T-Cell Product developed by or on behalf of Ares Trading that is a derivative of or is otherwise developed from or based upon a Chimeric Antigen Receptor T-Cell Product described in clause (a). “Target” means a unique molecular species or combination thereof (or naturally occurring allelic variant, glycosylation variant, or mutant thereof) that (a) is chemically distinct from other molecules, (b) is a human peptide, protein, polysaccharide or lipid, and (c) wherein a binding entity derives recognized therapeutic value from binding such molecular species. Option Intrexon may suggest a Target to Ares Trading, and if Ares Trading decides not to include such Target in a research program, it would be deemed to be an “Out-of-Scope Target” under the Ares Trading Agreement, Intrexon may, subject to certain conditions, independently exploit Products directed toward such Out-of-Scope Target at its own cost. The Ares Trading Agreement refers to such products as Out-of-Scope Products. Notwithstanding the foregoing, Intrexon may not develop a cell targeting an Out-of-Scope Target in the Field that according to the term defined in the Agreement would qualify as a “Competitive Product.” At the stage of finalization of the Phase 1 clinical trial enrollment of the first Out-of-Scope Product related to the Out-of-Scope Target, Ares Trading may exercise an option, or the Option, to make the Out-of-Scope Product a Product under the Ares Trading Agreement by notifying Intrexon it is doing so and by paying Intrexon a cash fee and paying increased royalties to Intrexon on such Product covered by the exercise of Ares Trading’s Option, subject to the other terms and conditions relating to royalty payments. If Ares Trading does not exercise the Option related to an Out-of-Scope Target and Out-of-Scope Product, Intrexon may further exploit such Out-of-Scope Target and Out-of-Scope Product independently from Ares Trading (subject to the restrictions on Intrexon contained in the Ares Trading Agreement, including Intrexon’s obligation not to develop a Competitive Product), in consideration for which (i) Intrexon must pay to Ares Trading a lower double digit percentage of all financial and non-financial consideration received by Intrexon for or in connection with such Out-of-Scope Product, up to a capped amount, which is referred to as the One-Time Intrexon Program Option Fee and (ii) once the One-Time Intrexon Program Option Fee has been paid by Intrexon, Intrexon must provide a credit to Ares Trading under the Ares Trading Agreement, subject to certain conditions, of a mid-single digit percentage of all financial and non-financial consideration received by Intrexon for or in connection with such Out-of-Scope Target or Out-of-Scope Product. Termination and Change in Control Ares Trading may voluntarily terminate, on a Product-by-Product and country-by-country basis or in its entirety, the Ares Trading Agreement upon 90 days’ written notice to Intrexon. Intrexon and Ares Trading may each terminate the Ares Trading Agreement if the other party materially breaches the Ares Trading Agreement and fails to cure the breach. Upon termination of the Ares Trading Agreement, Ares Trading, upon written notice to Intrexon, may continue to develop and commercialize any Product (i) for which a Phase 3 clinical trial has been initiated and of which development has not been terminated by Ares Trading or (ii) that is then being commercialized by Ares Trading. The Option and the payment obligations due to Ares Trading each survive termination of the Ares Trading Agreement with respect to research programs initiated by Intrexon for Out-of-Scope Products started before the effective date of termination. If either the Company or Intrexon, which for purposes of this paragraph, is referring to as the Acquiring Party, acquires a third party that has a program competitive to that described under the Ares Trading Agreement, the Acquiring Party may either divest such competitive program within 12 months or include all products under the acquired program as Out-of-Scope Products, which would then become subject to the Option. If any of the Company, Intrexon, or Ares Trading, which for purposes of this paragraph, is referring to as the Acquired Party, merges with or consolidates with or is acquired by a third party the exclusivity obligations applicable to such person, as described above, will not apply, so long as (i) the competitive program does not use any intellectual property of the Acquired Party or Ares Trading, and (ii) does not utilize services of the personnel of the Acquired Party. License Agreement with DEKK-Tec, Inc. On October 15, 2004, the Company entered into a license agreement with DEKK-Tec, Inc., or DEKK-Tec, pursuant to which it was granted an exclusive, worldwide license for palifosfamide. In consideration for the license rights, DEKK-Tec is entitled to receive payments upon achieving certain milestones in varying amounts which on a cumulative basis may total $4.0 million. Of the aggregate milestone payments, most will be creditable against future royalty payments as referenced below. Additionally, the Company issued DEKK-Tec an option to purchase 27,616 shares of the Company’s common stock for $0.02 per share, of which 13,808 options are still outstanding. DEKK-Tec is entitled to receive single digit percentage royalty payments on the sales of palifosfamide should it be approved for commercial sale. The Company’s obligation to pay royalties will terminate on a country-by-country basis upon the expiration of all valid claims of patents in such country covering licensed product, subject to earlier termination in the event of defaults by the parties under the license agreement. No milestones under the license agreement have been reached or expensed since 2010. License Agreement with Southern Research Institute On December 22, 2004, the Company entered into an Option Agreement with the Southern Research Institute, or SRI, pursuant to which the Company was granted an exclusive option to obtain an exclusive license to SRI’s interest in certain intellectual property, including exclusive rights related to certain isophosphoramide mustard analogs. On February 5, 2007, the Company exercised its option and entered into an exclusive license agreement. Under the license agreement, the Company is required to remit minimum annual royalty payments of $25 thousand until the first commercial sale of a licensed product. These payments were made for the years ended December 31, 2014, 2013, and 2012. The Company may be required to make payments upon achievement of certain milestones in varying amounts which on a cumulative basis could total up to $775 thousand. In addition, SRI will be entitled to receive single digit percentage royalty payments on the sales of a licensed product in any country until all licensed patents rights in that country which are utilized in the product have expired. No milestones under the license agreement have been reached or expensed since the agreement’s inception. Patent and Technology License Agreement—The University of Texas M. D. Anderson Cancer Center and the Texas A&M University System. On August 24, 2004, the Company entered into a patent and technology license agreement with The Board of Regents of the University of Texas System, acting on behalf of The University of Texas M. D. Anderson Cancer Center and the Texas A&M University System, which the Company refers to, collectively, as the Licensors. Under this agreement, the Company was granted an exclusive, worldwide license to rights (including rights to U.S. and foreign patent and patent applications and related improvements and know-how) for the manufacture and commercialization of two classes of organic arsenicals (water- and lipid-based) for human and animal use. The class of water-based organic arsenicals includes darinaparsin. The Company issued options to purchase 50,222 shares outside of the Company’s stock option plans following the successful completion of certain clinical milestones, of which 37,666 have vested. The remaining 12,556 shares will vest upon enrollment of the first patient in a multi-center pivotal clinical trial i.e. a human clinical trial intended to provide the substantial evidence of efficacy necessary to support the filing of an approvable New Drug Application, or NDA. In addition, the Licensors are entitled to receive certain milestone payments. The Company may be required to make additional payments upon achievement of certain other milestones in varying amounts which on a cumulative basis could total up to an additional $4.5 million. In addition, the Licensors are entitled to receive single digit percentage royalty payments on sales from a licensed product and will also be entitled to receive a portion of any fees that the Company may receive from a possible sublicense under certain circumstances. The license agreement also contains other provisions customary and common in similar agreements within the industry, such as the right to sublicense the Company’s rights under the agreement. On July 31, 2014, the Company amended and restated the License and Collaboration Agreement between the Company and Solasia Pharma K.K. or Solasia (see below), granting Solasia an exclusive worldwide license to develop and commercialize darinaparsin, and related organoarsenic molecules, in both intravenous and oral forms in all indications for human use. Solasia will be responsible for all costs related to the development, manufacturing and commercialization of darinaparsin. The Licensors will receive a portion of all milestone and royalty payments made by Solasia to the Company in accordance with the terms of the Company’s license agreement with the Licensors. Collaboration Agreement with Solasia Pharma K.K. On March 7, 2011, the Company entered into a License and Collaboration Agreement with Solasia Pharma K.K., or Solasia. Pursuant to the License and Collaboration Agreement, the Company granted Solasia an exclusive license to develop and commercialize darinaparsin in both IV and oral forms and related organic arsenic molecules, in all indications for human use in a pan- Asian/Pacific territory comprised of Japan, China, Hong Kong, Macau, Republic of Korea, Taiwan, Singapore, Australia, New Zealand, Malaysia, Indonesia, Philippines and Thailand. As consideration for the license, the Company received an upfront payment of $5.0 million to be used exclusively for further clinical development of darinaparsin outside of the pan-Asian/Pacific territory, and will be entitled to receive additional payments of up to $32.5 million in development-based milestones and up to $53.5 million in sales-based milestones. The Company will also be entitled to receive double digit royalty payments from Solasia based upon net sales of licensed products in the applicable territories, once commercialized, and a percentage of sublicense revenues generated by Solasia. Under the License and Collaboration Agreement, the Company provided Solasia with drug product to conduct clinical trials. These transfers were accounted for as a reduction of research and development costs and an increase in collaboration receivables. The agreement provides that Solasia will be responsible for the development and commercialization of darinaparsin in the pan-Asian/Pacific territory. On July 31, 2014, the Company entered into an amendment and restatement of the License and Collaboration Agreement granting Solasia an exclusive worldwide license to develop and commercialize darinaparsin, and related organoarsenic molecules, in both intravenous and oral forms in all indications for human use. In exchange, the Company will be eligible to receive from Solasia development-and sales-based milestones, a royalty on net sales of darinaparsin, once commercialized, and a percentage of any sublicense revenues generated by Solasia. Solasia will be responsible for all costs related to the development, manufacturing and commercialization of darinaparsin. The Company’s Licensors will receive a portion of all milestone and royalty payments made by Solasia to the Company in accordance with the terms of the Company’s license agreement with the Licensors. The $5.0 million upfront payment received in March 2011 is being amortized over the period of the Company’s research and development effort. The Company originally estimated this period to be 75 months. In accordance with the amended and restated License and Collaboration Agreement with Solasia, the Company is no longer obligated to continue their research and development efforts in connection with the |