On May 29, 2013, Arista Power, Inc. amended its Loan Agreement, dated September 4, 2012, with TMK-ENT, Inc., as amended on November 13, 2012 and December 21, 2012, to extend the maturity date of the working capital revolving line of credit for the company from December 21, 2013 to December 21, 2014. Advances under the Third Amended Loan Agreement, which will be evidenced by a committed revolving credit note, bear interest at 10% per year, payable annually. All borrowings under the Third Amended Loan Agreement are due and payable on December 21, 2014.