Equity Offerings

12 Months Ended

Dec. 31, 2018

Equity [Abstract]

Equity Offerings

Equity Offerings

On November 3, 2017, the Company entered into a Distribution Agreement (the “Distribution Agreement”) with J.P. Morgan Securities LLC, Wells Fargo Securities, LLC, and HSBC Securities (USA) Inc., as its sales agents, pursuant to which the Company may offer and sell from time to time through the sales agents up to $125.0 million maximum aggregate offering price of the Company’s common stock. Sales of the common stock pursuant to the Distribution Agreement may be made in negotiated transactions or transactions that are deemed to be “at the market” offerings as defined in Rule 415 under the Securities Act of 1933, including sales made directly on the Nasdaq Stock Market, or sales made to or through a market maker other than on an exchange.

For the year ended December 31, 2017, the Company received gross proceeds of $14.7 million from sales of its common stock under the Distribution Agreement and incurred issuance costs of $0.8 million on sales of approximately 294,000 shares of its common stock at an average price of approximately $49.85 per share.

For the year ended December 31, 2018, the Company received gross proceeds of $40.3 million from sales of its common stock under the Distribution Agreement and incurred issuance costs of $0.7 million on sales of approximately 557,000 shares of its common stock at an average price of approximately $72.40 per share. As of December 31, 2018, the Company had an aggregate of $70.0 million available to be offered under the Distribution Agreement.