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Preferred Stock
12 Months Ended
Dec. 31, 2021
Equity [Abstract]  
Preferred Stock

8. Preferred Stock

On July 5, 2017, in connection with the closing of the Company’s IPO, the Company filed its restated certificate of incorporation, which authorizes the Company to issue up to 5,000,000 shares of preferred stock, $0.001 par value per share. As of December 31, 2021 and 2020, the Company had no shares of preferred stock issued or outstanding.