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Stockholder's Equity | 3 Months Ended
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Mar. 31, 2024
Stockholders' Equity Note [Abstract] |
Stockholders' Equity | 6. Stockholders’ Equity 2023 Financing In December 2023, the Company raised net proceeds of approximately $117.0 million after deducting underwriting discounts and offering expenses through the sale of 25,035,000 shares of the Company’s common stock, par value $0.001 per share at a price of $2.880 per share and pre-funded warrants to purchase an aggregate of 18,379,861 shares of common stock at a price of $2.879 per share, which equals the per share offering price for the shares of common stock less the $0.001 exercise price for each pre-funded warrant. An entity related to one of the Company’s directors participated in the public offering and purchased 350,000 shares of common stock for an aggregate price of approximately $1.0 million. The pre-funded warrants are immediately exercisable, subject to certain beneficial ownership limitations. The warrants meet the criteria for equity classification and were therefore recorded at fair value as of the grant date as a component of stockholders’ equity within additional paid-in capital in the amount of $52.9 million. In February 2024, the Company issued an aggregate of 5,243,400 shares of common stock upon the cashless exercise of pre-funded warrants to purchase 5,244,444 shares of common stock. In April 2024, the Company issued an aggregate of 965,427 shares of common stock upon the exercise of pre-funded warrants. As of March 31, 2024, and as of the date of issuance of these interim condensed financial statements, pre-funded warrants to purchase up to 13,135,417 shares and 12,169,990 shares of common stock remained outstanding from the 2023 financing, respectively. 2022 Financing In July 2022, the Company raised net proceeds of approximately $122.5 million after deducting fees and expenses through the sale of an aggregate of 9,013,834 shares of common stock, pre-funded warrants to purchase up to 24,696,206 shares of its common stock and accompanying common warrants to purchase up to 8,427,508 shares of its common stock. The offering price per share and accompanying common warrant was $3.87125 per share and the offering price per pre-funded warrant and accompanying common warrant was $3.87025 per share, which equals the per share offering price for the shares of common stock less the $0.001 exercise price for each such pre-funded warrant. The pre-funded warrants remain exercisable until exercised in full. The common warrants have an exercise price of $5.806875 per share and expire on June 30, 2025. Both the pre-funded and common warrants are immediately exercisable, subject to beneficial ownership limitations. The warrants meet the criteria for equity classification and were therefore recorded at fair value as of the grant date as a component of stockholders’ equity within additional paid-in capital. In March 2023, the Company issued an aggregate of 2,582,557 shares of common stock upon the cashless exercise of pre-funded warrants to purchase 2,583,144 shares of common stock. As of March 31, 2024, pre-funded warrants to purchase up to 22,113,062 shares of common stock and common warrants to purchase up to 8,427,508 shares of common stock remained outstanding from the 2022 financing. 2021 At-the-Market (ATM) Program In August 2021, the Company entered into a sales agreement with Cowen and Company LLC, or TD Cowen, as sales agent, pursuant to which the Company may issue and sell shares of its common stock for an aggregate maximum offering of $100.0 million under an at-the-market offering program, or 2021 ATM program. TD Cowen is entitled to compensation up to 3% of the aggregate gross proceeds for the common stock sold through the 2021 ATM program. During 2023, the Company sold 2,646,458 shares of common stock at a price of $6.80 per share under the 2021 ATM program for net proceeds of approximately $17.5 million after deducting commissions paid to TD Cowen. During the three months ended March 31, 2024, the Company sold 6,639,348 shares of common stock under the 2021 ATM program for net proceeds of approximately $32.2 million. As of March 31, 2024, approximately $48.9 million remained available for the offer and sale of shares of common stock under the 2021 ATM program. Subsequent to March 31, 2024 and through the date of issuance of these interim condensed financial statements, net proceeds of approximately $6.4 million were raised as a result of the sale of shares of the Company’s common stock through the 2021 ATM program. 2024 ATM Program In March 2024, the Company entered into a sales agreement with TD Cowen, as sales agent, or 2024 ATM program, pursuant to which the Company may issue and sell shares of its common stock for an aggregate maximum offering of $100.0 million. TD Cowen is entitled to compensation up to 3% of the aggregate gross proceeds for the common stock sold through the 2024 ATM program. As of March 31, 2024, the Company has not made any sales under the 2024 ATM program. Common Stock The Company reserved the following shares of common stock for issuance as follows:
|  | March 31, 2024 |  |  | December 31, 2023 |
Stock options issued and outstanding |  |  | 11,859,362 |  |  |  | 9,208,970 |
Stock options reserved for 2020 Incentive Award Plan |  |  | 1,762,992 |  |  |  | 1,988,340 |
Unvested restricted stock units outstanding |  |  | 915,861 |  |  |  | 495,579 |
Common stock reserved for 2021 ATM program |  |  | 25,980,123 |  |  |  | 2,619,471 |
Common stock reserved for 2024 ATM program |  |  | 25,000,000 |  |  |  | — |
Common stock reserved for Employee Stock Purchase Plan |  |  | 2,122,071 |  |  |  | 1,338,381 |
Common stock reserved for 2022 Employment Inducement Award Plan |  |  | 1,667,300 |  |  |  | 758,084 |
Common stock reserved for pre-funded warrants |  |  | 35,248,479 |  |  |  | 40,493,510 |
Common stock reserved for common warrants |  |  | 8,427,508 |  |  |  | 8,427,508 |
Total common stock reserved |  |  | 112,983,696 |  |  |  | 65,329,843 |

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