BLITZER MICHAEL bought USAR

Footnotes

Each share of Series A Preferred Stock, par value $0.0001 per share of the Issuer ("Series A Preferred Stock") is convertible into a number of shares of common stock, par value $0.0001 per share of the Issuer ("Common Stock"), which is determined by dividing the Accrued Value (as defined in the Certificate of Designation for the Series A Preferred Stock (the "Certificate of Designation")) by the conversion price, subject to adjustment as set forth in the Certificate of Designation. Initially, the conversion price was $12.00. Pursuant to the terms of the Certificate of Designation, the conversion price was reset to $7.00. The Series A Preferred Stock has no expiration date.; Inflection Point Fund I, LP ("Inflection Point Fund") is the record holder of such securities. Inflection Point Asset Management LLC and Inflection Point GP I LLC are the investment manager and general partner, respectively, of Inflection Point Fund. Mr. Blitzer controls each Inflection Point Fund, Inflection Point Asset Management LLC and Inflection Point GP I LLC, including the exercise of voting and investment discretion over the securities held or to be held by Inflection Point Fund. Mr. Blitzer disclaims any beneficial ownership of the securities held by Inflection Point Fund, Inflection Point Asset Management LLC and Inflection Point GP I LLC other than to the extent of any pecuniary interest he may have therein, directly or indirectly.