In addition to the issuance of the aforementioned liability-classified warrants, the Company has issued warrants with different terms that are considered indexed to the Company's common stock and, therefore, are classified in additional paid-in capital and are not required to be measured at fair value at each reporting date. Such warrants include the Convertible Note Warrants issued on March 11, 2022, in connection with the Convertible Note Amendments, to purchase an aggregate of up to 7,533,750 shares of the Company's common stock at an exercise price of $0.01 per share. Refer to Note 5, Debt, for further discussion regarding the Convertible Note Warrants. The following table summarizes such equity-classified warrants outstanding and exercisable as of March 31, 2022 and December 31, 2021.