Stockholders' Equity Stockholders' Equity

3 Months Ended

Mar. 31, 2019

Equity [Abstract]

Stockholders' Equity

Shareholders’ Equity

2018 Common Stock Offering

In March 2018, the Company offered and sold 3,910,000 shares of common stock in an underwritten public offering at a price of $29.50 per share for gross proceeds of approximately $115.3 million. The Company received proceeds of approximately $109.8 million, net of approximately $5.5 million in underwriting commissions, discounts and other issuance costs.

Preferred Stock

In January 2019, the Company issued 782,031 shares of common stock upon the conversion of 2,737 shares of Series F Convertible Preferred Stock. As of March 31, 2019, there were no shares of Series F Convertible Preferred Stock issued and outstanding.

Warrants

In March 2018, the Company issued 43,056 shares of common stock in a cashless exercise of 83,013 warrants to a third-party warrant holder. As of March 31, 2019, the Company had outstanding warrants to purchase 10,000 shares of common stock.