Cash Position. Cash, cash equivalents and investments, excluding restricted cash, at December 31, 2015 totaled $82.3 million, compared to $101.3 million at December 31, 2014. During 2015, we received $29.1 million, net, through the sale of common stock under our "at-the-market" offering. We plan to raise additional capital in the future. To the extent we raise additional funds through the issuance of equity, such issuance will result in dilution to our stockholders. Our cash position is dependent on our revenue, including timing of the receipt of cash related to contractual revenue as well as any additional funds raised. From January 1, 2016 to March 7, 2016, we issued 2.7 million shares of our common stock at an average price of $8.79 per share through our "at-the-market" offering, resulting in net proceeds of $23.4 million.