CONFIDENTIAL DRAFT FOR PURPOSES OF SETTLEMENT DISCUSSIONS ONLY September 3, 2013 kigG3-666 Attention-Williont-H,-C-itoos,ManagefWilliam H. Gates Dear Bill: RE: Letter of Agreement Regarding Purchase of Partnership Interest in Investment Entity This letter sets forth the agreement by and between bgC3 LLCyou, William H. Gates ("bgC3Gates"), and me, Dr. Boris Nikolic ("Dr. Nikolic"), with respect to the purchase by bgG-3 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 efeated-under-ouF-pfier-agreement-in-a eertain-$30-Millien-te-$50-Million in certain investments discovered and researched by Dr. Nikolic Investment-Entity-(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 With respect to bgC3's Gates shall purchase from Dr. Nikolic of Dr. Nikolic's interest in the Investment Entityrbge3-Gsand Dr. Nikolic have agreed as follows: Termination-of Employment-and Besiness-ontl-Finaneial RelationshipsDissolution and Winding Up the Partnership Sale and Purchase of Interest in Investment Entity SE-251912 vl etteept—for—these—reitttionships—ereeted—by—the—previsions—of--this Agreement. Dr. Nikolic acknowledges and agrees to the dissolution and winding up of the Investment Entity, that he has disassociated himself from the 'investment Entity. and that Gates shall have the exclusive authority to wind up the Investment Entity. As part of the dissolution and winding up of the Investment Entity, Dr. Nikolic shall, and does hereby agree to, sell, transfer and convey to bgGaGates, and ales shall purchase from Dr. Nikolic, all of Dr. Nikolic's right, title and interest in and to the Investment Entity and the underlying partnership assets for a purchase price equal