Stockholders' Equity

3 Months Ended

Mar. 31, 2023

Equity [Abstract]

Stockholders' Equity

5. Stockholders’ Equity

Warrants

In April 2022, the Company amended its term loan and the warrants previously issued to Perceptive Credit Holdings III, LP (“Perceptive”) and certain of its affiliates to purchase an aggregate of 304,105 shares of its common stock. Such warrants were amended solely to reduce the exercise price of the warrants to $12.00 per share.

Warrants issued and outstanding at March 31, 2023 and December 31, 2022 included 27,397 warrants with exercise price of $10.95 per share and 304,106 warrants with exercise price of $12.00 per share in each period. These warrants expire between December 2023 and August 2031.

On September 27, 2022, the Company completed the Private Placement, issuing an aggregate of approximately 23.0 million shares of its common stock at a purchase price of $0.95 per share and pre-funded warrants to purchase an aggregate of 43.3 million shares of common stock at a purchase price of $0.949 per pre-funded warrant to certain institutional investors and accredited investors (the "Purchasers"). The pre-funded warrants have an exercise price of $0.001 per share of common stock, are immediately exercisable and will remain exercisable until exercised in full. The aggregate net proceeds from the Private Placement, after deducting placement agent fees and other offering expenses, were $59.0 million.

The pre-funded warrants include a provision whereby the exercisability of the warrants may be limited if, upon exercise, the warrant holder or any of its affiliates would beneficially own more than 9.99% of the Company's common stock. The threshold is subject to the Purchaser's rights under the pre-funded warrant to increase or decrease such percentage to any other percentage not in excess of 19.99% upon at least 61 days' prior notice from the Purchaser to the Company. As of March 31, 2023, approximately 1.1 million shares have been issued pursuant to the exercise of pre-funded warrants and 42.2 million shares underlying the pre-funded warrants remain outstanding.

The pre-funded warrants are classified as equity and are accounted for as a component of additional paid-in capital at the time of issuance. The pre-funded warrants are included in the calculation of basic and diluted loss per share. Pursuant to the terms and conditions of the purchase agreements entered into by the Purchasers, the Company was obligated to file a registration statement with the SEC registering the resale by the Purchasers of the shares of common stock issued to them in the Private Placement and the shares of common stock to be issued to them upon exercise of the pre-funded warrants issued to them in the Private Placement within 45 days of the closing of the Private Placement. On November 4, 2022, the Company filed a registration statement on Form S-3 (File No. 333-268174), as required under the purchase agreements, and the registration statement was declared effective by the SEC on November 16, 2022.