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Common Stock | 12 Months Ended
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Dec. 31, 2021
Equity [Abstract] |
Common Stock | 8. Common Stock The Company is authorized to issue up to 1,000,000,000 shares of common stock with a par value of $0.00001 per share, and 5,000,000 shares of preferred stock with a par value of $0.00001 per share. As of December 31, 2021 and 2020, there were 45,433,684 and 44,777,818 shares of common stock issued and outstanding, respectively. Common stockholders are entitled to receive dividends if and when declared by the board of directors subject to the rights of any preferred stockholders. As of December 31, 2021, no dividends on common stock had been declared by the Company. As of December 31, 2021 and 2020, the Company had reserved shares of common stock for issuance as follows:
|  | December 31, |
|  | 2021 |  |  | 2020 |
Options issued and outstanding |  |  | 4,246,007 |  |  |  | 4,090,970 |
Shares available for future stock option grants |  |  | 4,951,680 |  |  |  | 4,609,725 |
Shares available for employee stock purchase plan |  |  | 801,464 |  |  |  | 400,752 |
Total |  |  | 9,999,151 |  |  |  | 9,101,447 |

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