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Common Stock Warrants | 6 Months Ended
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Jun. 30, 2020
Common Stock Warrants [Abstract] |
Common Stock Warrants | Note 11. Common Stock Warrants In connection with the sale of Series A redeemable convertible preferred stock in August 2011, the Company issued a warrant to purchase 188,643 shares of common stock to an investor who purchased Series A redeemable convertible preferred stock in August 2011 at an exercise price of $0.04 per share. The Company recorded the issuance-date fair value of the warrant of $0.1 million in equity as the warrant met all criteria for equity classification. The common stock warrant was exercised in June 2019 prior to the Company’s IPO and is no longer outstanding. In connection with the Growth Capital Loan agreement (see Note 6), the Company issued a warrant to purchase 65,502 shares of common stock to the lender at an exercise price of $9.16 per share exercisable for seven years from March 22, 2019. The Company recorded the issuance-date fair value of the warrant of $0.6 million in equity as the warrant met all criteria for equity classification. The warrant was still outstanding as of June 30, 2020.

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