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Stockholders' Equity | 9 Months Ended
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Sep. 30, 2020
Equity [Abstract] |
Stockholders' Equity | Stockholders' Equity Common Stock On September 23, 2019, the Company closed its IPO of 4,140,000 shares of its common stock at a price to the public of $14.00 per share, including the exercise in full by the underwriters of their option to purchase 540,000 additional shares of the Company's common stock. Including the exercise of the option to purchase additional shares, the aggregate net proceeds to the Company from the offering was approximately $50.4 million, net of underwriting discounts, commissions and other estimated offering expenses, for aggregate expenses of approximately $7.5 million. In addition, an aggregate of 7,816,643 shares of common stock, excluding warrant conversions, were issued to the holders of the Company's Series A-3, Series B-3, Series C, Series D, Series E, Series F and Series H redeemable convertible preferred stockholders upon the automatic conversion of all shares of redeemable convertible preferred stock to common stock. Outstanding Warrants The following equity classified warrants to purchase common stock were outstanding as of September 30, 2020:
| Shares |  | Exercise Price |  | Issuance date |  | Expiration date
Common stock warrants | 252,798 |  | $ | 1.84 |  |  | January 19, 2016 |  | January 19, 2026
Common stock warrants | 69,176 |  | 1.84 |  | March 31, 2016 |  | March 31, 2026
Common stock warrants | 131 |  | 1.84 |  | April 1, 2016 |  | April 1, 2026
Common stock warrants | 83,778 |  | 14.32 |  | September 8, 2017 |  | September 8, 2024
Common stock warrants | 20,944 |  | 14.32 |  | December 7, 2018 |  | December 7, 2025
| 426,827 |  |  |  |  |  |
During the nine months ended September 30, 2020, warrants to purchase common stock were exercised resulting in the issuance of 32,120 shares of the Company's common stock and cash proceeds of an immaterial amount.

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- Definition The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -URI http://asc.fasb.org/topic&trid=2208762 + Details
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