ATM
On December 23, 2022, the Company filed a shelf registration statement on Form S-3 with the SEC in relation to the registration of common stock, preferred stock, debt securities, warrants, subscription rights, and/or units of any combination thereof of up to $200,000 in aggregate (the “Shelf”). The Shelf was declared effective on January 3, 2023 by the SEC. The Company also simultaneously entered into a sales agreement with the Sales Agents providing for the offering, issuance and sale by the Company of up to $40,000 of its common stock from time to time in ATM offerings under the Shelf. The Company sold 1,110,678 shares of common stock pursuant to the ATM during the nine months ended September 30, 2023 for gross proceeds of approximately $2,509. As of September 30, 2023, there was $37,491 remaining of common stock available for sale under the ATM.
Lincoln Park Purchase Agreement
On March 10, 2023, the Company entered into a purchase agreement with Lincoln Park for an equity line financing. The Purchase Agreement provides that, subject to the terms and conditions set forth therein, the Company has the right, but not the obligation, to direct Lincoln Park to purchase up to $35,000 of shares of common stock in the Company’s sole discretion, over a 36-month period commencing on March 10, 2023. As part of the Purchase Agreement, the Company issued 189,856 shares of its common stock as consideration for Lincoln Park’s commitment to purchase shares of common stock under the Purchase Agreement (the “Commitment Shares”). The Company recorded $318 to other expense, net in connection with the issuance of the Commitment Shares. During the nine months ended September 30, 2023, the Company sold 125,000 shares of common stock to Lincoln Park for proceeds of $205, as part of the equity line financing arrangement. As of September 30, 2023, $34,795 was available to draw pursuant to the Purchase Agreement.
8. Equity-based Compensation
2021 Equity Incentive Plan
On October 7, 2021, the date upon which the Company’s Registration Statement on Form S-1 in connection with the IPO was declared effective, the Company’s 2021 Equity Incentive Plan (the “2021 Plan”) became effective. On the same date, the Company ceased granting awards under its 2017 Equity Incentive Plan (the “2017 Plan”). The 2021 Plan authorizes the award of both equity-based and cash-based incentive awards, including: (i) stock options (both incentive stock options and nonqualified stock options), (ii) stock appreciation rights, (iii) restricted stock awards, (iv) restricted stock units (“RSUs”), and (v) cash or other stock-based awards. Incentive stock options may be granted only to employees. All other types of awards may be issued to employees, directors, consultants, and other service providers.
As of September 30, 2023, the aggregate number of shares of common stock of the Company that may be issued under the 2021 Plan is 2,982,942. The number of shares reserved for issuance under the 2021 Plan increased automatically on January 1, 2023 pursuant to an evergreen provision therein by 1,449,577 shares, representing 5% of total common shares outstanding at December 31, 2022. The aggregate number of shares will increase each anniversary of such date prior to the termination of the 2021 Plan, equal to the lesser of (i) 5% of the Company’s shares of common stock issued and outstanding on the last day of the immediately preceding fiscal year and (ii) such smaller number of shares as determined by the Company’s board of directors or the compensation committee. No more than 7,543,185 shares of common stock may be issued under the 2021 Plan through incentive stock options. Shares subject to the 2021 Plan, the 2017 Plan or the 2007 Equity Incentive Plan (the “2007 Plan” and collectively with the 2017 Plan, the “Prior Plans”) that expire, terminate or are cancelled or forfeited for any reason after the effectiveness of the 2021 Plan will be added (or added back) to the shares available for issuance under the 2021 Plan. The total number of shares underlying the Prior Plan awards that may be recycled into the 2021 Plan will not exceed 4,334,131 shares.
2017 Equity Incentive Plan
On September 15, 2017, the Company’s board of directors approved the 2017 Plan, which provides for the granting of incentive stock options, non-qualified stock options and stock awards to employees, certain consultants and directors. The board of directors, or its designated committee, has the sole authority to select the individuals to whom awards are