Unsecured Bank Loan

In May 2003, the Company signed an unsecured loan agreement (the “Bank Loan”) under a silent partnership agreement with Technologie-Beteiligungs-Gesellschaft (“TBG”), a minority interest stockholder. As of April 3, 2014, the Company and TBG, the subsidiary of KfW Bank, Frankfurt (“KfW”), signed a repayment agreement concerning the Company’s repayment of its liabilities to TBG outstanding at December 31, 2013 in a total amount of €1.2 million ($1.34 million). The principal amount bore interest at a rate of 10.53%. On December 11, 2014, the Company and TBG entered into an accelerated repayment agreement in respect of the claims of TBG against the Company. Pursuant to terms of the accelerated repayment agreement, conditioned upon closing of the Acquisition, the Company was obligated to pay €1,050,000 ($1.27 million), the outstanding amount under the repayment agreement, in two tranches as follows: €600,000 ($726,060) plus accrued interest on January 31, 2015 and €450,000 ($544,545) on March 31, 2015. The outstanding principal amount for the first and the second tranches, net of capital gain tax withheld, was repaid in full in March 2015 and such next payment was €931,312 ($1,027,051). The capital gain tax withheld in the amount of €118,688 ($130,889) was paid on April 9, 2015 and no further amounts were payable in respect of TBG loan. No payments were made during the year ended December 31, 2016.