Equity Transactions

9 Months Ended

Sep. 30, 2016

Equity Transactions [Abstract]

Equity Transactions

12.Equity Transactions

As of September 30, 2016, we have reserved approximately 16.4 million of our authorized but unissued shares of common stock for future issuance pursuant to our employee stock option plans issued to employees and consultants.

On July 20, 2016, we issued 28,579,421 shares of our common stock and one-year warrants to purchase an equal number of shares of our common stock in a public offering.

In the first quarter of 2016, we issued 100,000 common shares for $0.2 million resulting from the exercise of stock options and warrants to purchase 500,000 common shares at an exercise price of $1.74.

On October 26, 2015, we retired 199,275 shares of our treasury stock at cost ($2.6 million).