NOTE 3 — COLLABORATION ARRANGEMENTS

On February 3, 2012, the Company entered into a global license and co-development agreement, or License Agreement, with Merck KGaA, of Darmstadt, Germany, to co-develop and commercialize evofosfamide, the Company’s small molecule hypoxia-targeted drug. Under the terms of the License Agreement, Merck KGaA received co-development rights, exclusive global commercialization rights and provided the Company with an option to co-commercialize evofosfamide in the United States. To date the Company has received $110 million in upfront and milestone payments. The milestones earned to date were not deemed to be substantive milestones because the work related to the achievement of these items was predominately completed prior to the inception of the arrangement or was not commensurate with Company’s performance subsequent to the inception of the arrangement to achieve the milestone.

The Company’s deliverables under the License Agreement with Merck KGaA, which included delivery of the rights and license for evofosfamide and performance of research and development activities, were determined to be a single unit of accounting. The delivered license did not have standalone value at the inception of the arrangement due to the Company’s proprietary expertise with respect to the licensed compound and related ongoing developmental participation under the License Agreement, which was required for Merck KGaA to fully realize the value from the delivered license. Therefore, the revenue relating to this unit of accounting was recorded as deferred revenue and recognized over the estimated performance period under the License Agreement, which is the product development period. The Company recorded $110 million of the upfront payment and milestones payments as deferred revenue and was amortizing them ratably over the estimated period of performance, which the Company originally estimated to end on March 31, 2020 for the nine months ended September 30, 2015. Merck KGaA’s decision to cease further joint development of evofosfamide in December 2015 resulted in the immediate recognition of all the remaining deferred revenue into revenue during the quarter ended December 31, 2015. As a result, the Company recognized $0 revenue during the three and six months ended June 30, 2016, and $3.7 million and $7.4 million of revenue during the three and six months ended June 30, 2015, respectively. Further, in March 2016, the Company and Merck KGaA agreed to terminate the License Agreement pursuant to a termination agreement, or the Termination Agreement.  Under the terms of the Termination Agreement, all rights under the License Agreement were returned to the Company, as well as all rights to Merck KGaA technology developed under the License Agreement. Under the Termination Agreement Merck KGaA is entitled to tiered royalties on net sales if any, and milestone payments contingent upon the future successful partnering, development and commercialization of evofosfamide. Also as a result of the termination of the License Agreement the Company is no longer eligible to receive any further milestone payments from Merck KGaA

Merck KGaA also paid 70% of worldwide development expenses for evofosfamide under the terms of the License Agreement. With the decision to cease further joint development of evofosfamide and the termination of the License Agreement, the Company is no longer eligible to receive payments from Merck KGaA for expenses related to further development of evofosfamide other than for costs to wind down the discontinued trials and return the evofosfamide rights back to the Company. The Company earned $0.9 million and $1.7 million reimbursement for eligible worldwide expenses for evofosfamide from Merck KGaA during the six and six months ended June 30, 2016, which expenses were solely for trial wind-down efforts, compared to $3.6 million and $5.6 million for eligible worldwide development expenses incurred during the six and six months ended June 30, 2015. Such earned reimbursement has been reflected as a reduction of research and development expenses.