STOCKHOLDERS' EQUITY

6 Months Ended

Jun. 30, 2022

Equity [Abstract]

Stockholders' Equity

STOCKHOLDERS’ EQUITY

2017 Warrants — During the three and six months ended June 30, 2022, warrant holders elected to exercise 1,130,089 warrants to purchase shares of common stock. During the three and six months ended June 30, 2021, warrant holders did not elect to exercise any warrants to purchase shares of common stock. As of June 30, 2022 and December 31, 2021, the remaining warrant holders are entitled to purchase 240,188 and 1,370,277 shares of common stock, respectively.

2015 Warrants — During the three and six months ended June 30, 2022, warrant holders elected to exercise 868,304 warrants to purchase shares of common stock. During the three and six months ended June 30, 2021, warrant holders did not elect to exercise any warrants to purchase shares of common stock. As of June 30, 2022 and December 31, 2021, the remaining warrant holders are entitled to purchase 47,199 and 915,503 shares of common stock, respectively.