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Warrants | 12 Months Ended
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Dec. 31, 2019
Warrants [Abstract] |
Warrants | NOTE 7 —Warrants In connection with an August 2016 preferred stock agreement (“PSA”), the Company issued the August 2016 PSA Warrant. The warrant becomes exercisable into Series A preferred shares as follows: 1) 155,338 shares vested in each of August 2017, 2018 and 2019. If, subsequent to the issuance of the August 2016 PSA warrant, the Company declares or pays dividends on Series A in the form of common shares, cash or a security other than Series A, then upon exercise of this warrant, the holder is entitled to receive dividends as if the holder had owned the Series A preferred shares as of the date the dividend is declared. The Company’s October 2017 Amended and Restated Certificate of Incorporation included a provision that a change of control, as defined, results in a cash redemption of Series A and Series B. The ability to effect a change in control was within the control of the preferred stockholders. As a result of effecting a change in control being outside the control of the Company, the warrants to purchase Series A and Series B were classified as liabilities, with subsequent changes in fair value recorded in the Company’s consolidated statements of operations. During the years ended December 31, 2019 and 2018, the Company recognized other expense of zero and $970, respectively, from the remeasurement of the fair value of this warrant. On August 30, 2018, warrants to purchase 310,676 shares of Series A were exercised in exchange for consideration of $47. Upon exercise, the fair value of the warrants at the time of exercise of $2,951 was reclassified from liability to equity. Additionally, in connection with this exercise, the Company amended the original PSA (“Amended PSA”) to revise the terms for the then outstanding unvested warrants. In accordance with the terms of the Amended PSA, upon any reclassification, exchange, conversion, substitution, or other event that occurs on or after the original issuance date and prior to the termination which results in a change of the number and/or class of securities issuable upon exercise of conversion of the warrant, the holder of the warrant shall be entitled to receive, upon exercise, the number and kind of securities and property that such holder would have received as if the warrant had been exercised immediately before such reclassification, exchange conversion substitution or other event. As a result of the Company’s conversion of all outstanding preferred shares into common stock, the remaining outstanding warrants are now exercisable into common shares. On November 2, 2018, in connection with the Company’s conversion of outstanding preferred stock to common stock, the Company reclassified the remaining warrants outstanding from liability to equity based on the terms of the August 30, 2018 amended warrant agreement, as defined above. As a result, the outstanding liability at the time of the conversion of $1,804 was reclassified into stockholder’s equity (deficit). There were 155,338 warrants exercised on May 10, 2019 for total cash proceeds of $23. During the year ended December 31, 2018, warrants to purchase 5,977 shares of preferred stock expired. The following table discloses warrants issued and outstanding as of December 31, 2019 and 2018:
|  | December 31, 2019 |  | December 31, 2018
|  | Exercise |  |  | Number of warrant |  |  | Year of |  | Exercise |  |  | Number of warrant |  |  | Year of
Issuance date |  | price |  |  | shares |  |  | expiration |  | price |  |  | shares |  |  | expiration
Common |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
November 2012 |  | $ | 6.00 |  |  |  | 7 |  |  | 2028 |  | $ | 6.00 |  |  |  | 7 |  |  | 2028
November 2012 |  | $ | 6.00 |  |  |  | 927 |  |  | 2020 |  | $ | 6.00 |  |  |  | 927 |  |  | 2020
November 2012 |  | $ | 14.50 |  |  |  | 22 |  |  | 2028 |  | $ | 14.50 |  |  |  | 22 |  |  | 2028
August 2016 |  |  | — |  |  |  | — |  |  |  |  | $ | 0.15 |  |  |  | 155,338 |  |  | 2023
Total warrants |  |  |  |  |  |  | 956 |  |  |  |  |  |  |  |  |  | 156,294 |  |  |

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