CONFIDENTIAL DRAFT FOR PURPOSES OF SETTLEMENT DISCUSSIONS ONLY September 3, 2013 William H. Gates Dear Bill: RE: Letter of Agreement Regarding Purchase of Partnership Interest This letter sets forth the agreement by and between you, William H. Gates ("Gates"), and me, Dr. Boris Nikolic ("Dr. Nikolic"), with respect to the purchase by Gates from Dr. Nikolic of Dr. Nikolic's interest in a partnership, under the terms of which we discussed potential investment in a range up to $100 Million in certain investments discovered and researched by Dr. Nikolic (the "Investment Entity"). Only two of such investments, totaling Twenty Million Dollars, as detailed below, were ever made. The partnership was formed effective April 1, 2013. We now agree to dissolve and wind up the Investment Entity and Gates shall purchase from Dr. Nikolic Dr. Nikolic's interest in the Investment Entity. Gates and Dr. Nikolic have agreed as follows: Dissolution and Winding Up the Partnership SE251912 vl EFTA_R1_00438087 EFTA01961275