EXHIBIT 10.31Note and Warrant Exchange Agreement • March 31st, 1998 • Uranium Resources Inc /De/ • Wholesale-metals & minerals (no petroleum) • Missouri
Contract Type FiledMarch 31st, 1998 Company Industry Jurisdiction
NOTE AND WARRANT EXCHANGE AGREEMENTNote and Warrant Exchange Agreement • January 4th, 2012 • VistaGen Therapeutics, Inc. • Pharmaceutical preparations • New York
Contract Type FiledJanuary 4th, 2012 Company Industry JurisdictionThis Note and Warrant Exchange Agreement (this “Agreement”) is dated as of December 29, 2011, by and between VistaGen Therapeutics, Inc., a Nevada corporation (the “Company”), and Platinum Long Term Growth VII, LLC (“Platinum”).
AMENDMENT TO NOTE AND WARRANT EXCHANGE AGREEMENTNote and Warrant Exchange Agreement • November 13th, 2009 • CleanTech Biofuels, Inc. • Industrial organic chemicals • New York
Contract Type FiledNovember 13th, 2009 Company Industry JurisdictionThis Amendment to Note and Warrant Exchange Agreement (this “Agreement”) is entered into as of the _______day of July, 2009, by and between Vertex Energy, Inc. (“Vertex”) and CleanTech Biofuels, Inc. (“CTB”).