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Stockholders' Equity | 9 Months Ended
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Sep. 30, 2023
Equity [Abstract] |
Stockholders' Equity | 9. Stockholders’ equity Preferred stock The Company has authorized 10,000,000 shares of $0.001 par value preferred stock of which no shares were issued or outstanding as of September 30, 2023. Common Stock The Company has authorized 200,000,000 shares of $0.001 par value common stock of which there were 36,926,285 and 35,262,083 shares issued and outstanding as of September 30, 2023 and December 31, 2022, respectively. Common shares are voting, and dividends may be paid when, as and if declared by the Board of Directors. The Company has reserved the following shares of common stock for future issuance as of September 30, 2023 and December 31, 2022:
|  | September 30, |  |  | December 31, |
|  | 2023 |  |  | 2022 |
Stock options outstanding |  |  | 4,662,721 |  |  |  | 5,742,053 |
Shares available for future grant under incentive plans |  |  | 3,016,412 |  |  |  | 988,216 |
|  |  | 7,679,133 |  |  |  | 6,730,269 |
Equity Offerings On December 10, 2021, the Company entered into an Equity Distribution Agreement (the Sales Agreement) with Oppenheimer & Co. Inc. (the Sales Agent) to sell shares of the Company’s common stock, par value $0.001 per share, with aggregate gross sales proceeds of up to $125,000, from time to time, through an “at the market” equity offering program. During the nine months ended September 30, 2022, the Company sold 12,767 shares of common stock under the ATM program for net proceeds of approximately $50. No shares were sold during the three or nine months ended September 30, 2023. On September 26, 2023, the Company's ATM was terminated.

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