Common and Preferred Stock

3 Months Ended

Mar. 31, 2022

Equity [Abstract]

Common and Preferred Stock

10. Common and Preferred Stock

The Company is authorized to issue 400,000,000 shares of common stock, par value $0.01 per share, and 10,000,000 shares of undesignated preferred stock, par value $0.01 per share, issuable in one or more series as designated by the Company’s board of directors. No other class of capital stock is authorized. As of March 31, 2022 and December 31, 2021, 252,413,434 and 251,477,562 shares of common stock, respectively, were issued and outstanding and no shares of preferred stock were outstanding.

In February 2018, the Company entered into a controlled equity offering sales agreement (the “CF Sales Agreement”) with Cantor Fitzgerald & Co. (“Cantor Fitzgerald”), as sales agent, pursuant to which the Company may offer and sell, from time to time, through Cantor Fitzgerald, shares of the Company’s common stock having an aggregate offering price of up to $50.0 million or such other amount as may be permitted by the Sales Agreement. Under the Sales Agreement, Cantor Fitzgerald may sell shares by any method deemed to be an “at-the-market offering” as defined in Rule 415 under the Securities Act of 1933, as amended. For the three months ended March 31, 2022, there were no sales under the CF Sales Agreement. For the three months ended March 31, 2021, the Company sold an aggregate of 578,063 shares of the Company’s common stock at a weighted average purchase price of $3.26 per share for an aggregate gross proceeds of approximately $1.9 million pursuant to the CF Sales Agreement. 

In the first quarter of 2021, Mann Group converted $0.4 million of interest and $9.6 million of principal into 4,000,000 shares of common stock in accordance with the terms of the Mann Group convertible note.

In the first quarter of 2021, the Company converted $5.0 million principal amount of 2024 convertible notes into 1,666,667 shares of the Company’s common stock in accordance with the terms of the 2024 convertible notes.

For the three months ended March 31, 2022, the Company received $0.7 million from the market price stock purchase plan (“MPSPP”) for 252,176 shares. There were no MPSPP transactions during the three months ended March 31, 2021.

The Company issued 233,401 and 292,981 shares of common stock pursuant to the ESPP for the three months ended March 31, 2022 and 2021, respectively. There were approximately 0.9 million shares of common stock available for issuance under the ESPP as of March 31, 2022.