Note 8 – License Agreements

During the year ended May 31, 2016, the Company executed a license agreement with a third-party licensor covering the licensor’s “system know-how” technology with respect to the Company’s use of proprietary cell lines to manufacture new PRO 140 material. In connection with this license agreement, the Company became the primary obligor of an additional £600,000 (approximately US$807,000 utilizing current exchange rates), which was timely paid by June 30, 2016. During the year ended May 31, 2016, the Company accrued an additional expense of £600,000 (approximately US$870,000) in connection with the June 30, 2016 obligation. Future annual license fees and royalty rate will vary depending on whether we manufacture PRO 140 ourselves, utilize the third-party licensor as a contract manufacturer, or utilize an independent party as a contract manufacturer. The licensor does not charge an annual license fee of £300,000 (approximately US$432,000) when it serves as the manufacturer.