Common Contracts

Up to $20,000,000 Common Stock

January 21st, 2017

• Filed
  January 21st, 2017

We have entered into a Controlled Equity OfferingSM Sales Agreement (the Sales Agreement) with Cantor Fitzgerald & Co. (Cantor Fitzgerald) relating to shares of our common stock offered by this prospectus supplement and the accompanying prospectus. In accordance with the terms of the Sales Agreement, we may offer and sell shares of our common stock from time to time through Cantor Fitzgerald, acting as sales agent, having an aggregate offering price of up to $20 million, pursuant to this prospectus supplement and the accompanying prospectus.