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Warrants and Options | 9 Months Ended
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Sep. 30, 2022
Warrants and Rights Note Disclosure [Abstract] |
Warrants and Options | 12. Warrants and Options Equity Classified Common Stock Warrants The Company issued the following warrants to purchase shares of its common stock, which are outstanding as of September 30, 2022 or December 31, 2021, respectively. These warrants are exercisable any time at the option of the holder until their expiration date.
|  | Issuance Date |  | Term |  | Exercise Price Per Share |  |  | Exercised during the Year Ended December 31, 2021 |  |  | Outstanding at December 31, 2021 |  |  | Exercised during the Nine Months Ended September 30, 2022 |  |  | Outstanding at September 30, 2022 |
August 2022 Pre-Funded Warrants |  | August 2022 |  | perpetual |  | $ | 0.00 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 2,272,506 |
January 2021 Placement Agent Warrants |  | January 2021 |  | 5.5 years |  | $ | 3.99 |  |  |  | — |  |  |  | 393,839 |  |  |  | — |  |  |  | 393,839 |
January 2021 Service and Performance Warrants (1) |  | January 2021 |  | 2 years |  | $ | 3.08 |  |  |  | — |  |  |  | 7,500 |  |  |  | — |  |  |  | 7,500 |
December 2020 Warrants |  | December 2020 |  | 5.5 years |  | $ | 3.00 |  |  |  | — |  |  |  | 2,618,658 |  |  |  | — |  |  |  | 2,618,658 |
December 2020 Placement Agent Warrants |  | December 2020 |  | 5 years |  | $ | 3.82 |  |  |  | — |  |  |  | 130,933 |  |  |  | — |  |  |  | 130,933 |
July 2020 Warrants |  | July 2020 |  | 5.5 years |  | $ | 3.85 |  |  |  | — |  |  |  | 641,416 |  |  |  | — |  |  |  | 641,416 |
July 2020 Placement Agent Warrants |  | July 2020 |  | 5.5 years |  | $ | 4.97 |  |  |  | — |  |  |  | 32,071 |  |  |  | — |  |  |  | 32,071 |
May 2020 Warrants |  | May 2020 |  | 5 years |  | $ | 4.78 |  |  |  | — |  |  |  | 1,392,345 |  |  |  | — |  |  |  | 1,392,345 |
May 2020 Placement Agent Warrants |  | May 2020 |  | 5 years |  | $ | 6.13 |  |  |  | — |  |  |  | 69,617 |  |  |  | — |  |  |  | 69,617 |
March 2020 Service and Performance Warrants (1) |  | March 2020 |  | 3 years |  | $ | 2.50 |  |  |  | — |  |  |  | 18,350 |  |  |  | — |  |  |  | 18,350 |
February 12, 2020 Service and Performance Warrants (1)(3) |  | February 2020 |  | 2 years |  | $ | 4.71 |  |  |  | — |  |  |  | 150,000 |  |  |  | — |  |  |  | — |
February 3, 2020 Service and Performance Warrants (1)(3) |  | February 2020 |  | 2 years |  | $ | 4.91 |  |  |  | — |  |  |  | 10,000 |  |  |  | — |  |  |  | — |
September 2019 Placement Agent Warrants |  | September 2019 |  | 5 years |  | $ | 9.48 |  |  |  | — |  |  |  | 65,942 |  |  |  | — |  |  |  | 65,942 |
June 2019 Placement Agent Warrants |  | June 2019 |  | 5 years |  | $ | 6.29 |  |  |  | — |  |  |  | 74,479 |  |  |  | — |  |  |  | 74,479 |
April 2019 Service and Performance Warrants (1) |  | April 2019 |  | 5 years |  | $ | 6.18 |  |  |  | — |  |  |  | 145,154 |  |  |  | — |  |  |  | 145,154 |
June 2018 Placement Agent Warrants |  | June 2018 |  | 5 years |  | $ | 12.57 |  |  |  | — |  |  |  | 69,617 |  |  |  | — |  |  |  | 69,617 |
March 2018 Placement Agent Warrants |  | March 2018 |  | 5 years |  | $ | 41.56 |  |  |  | — |  |  |  | 15,038 |  |  |  | — |  |  |  | 15,038 |
January 2021 Warrants (2) |  | January 2021 |  | 5.5 years |  | $ | 3.13 |  |  |  | — |  |  |  | 3,938,392 |  |  |  | — |  |  |  | 3,938,392 |
September 2019 Warrants (2) |  | September 2019 |  | 5.5 years |  | $ | 7.52 |  |  |  | — |  |  |  | 659,414 |  |  |  | — |  |  |  | 659,414 |
June 2019 Warrants (2) |  | June 2019 |  | 5.5 years |  | $ | 5.00 |  |  |  | — |  |  |  | 435,830 |  |  |  | — |  |  |  | 435,830 |
June 2018 Warrants (2) |  | June 2018 |  | 5.5 years |  | $ | 9.94 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
March 2018 Warrants (2) |  | March 2018 |  | 5 years |  | $ | 10.73 |  |  |  | — |  |  |  | 641,416 |  |  |  | — |  |  |  | 641,416 |
Total |  |  |  |  |  |  |  |  |  | — |  |  |  | 11,510,011 |  |  |  | — |  |  |  | 13,622,517 |
(1) The Company issued service and performance warrants (“Service and Performance Warrants”) in connection with professional services agreements with non-affiliated third party entities. (2) Certain warrants contain a contingent cash payment feature and therefore were accounted for as a liability at the date of issuance and were adjusted to fair value at each balance sheet date. Upon adoption of ASU No. 2020-06 on January 1, 2022, all of the common stock warrant liabilities have been reclassified to equity classified common stock warrants, due to the elimination of the contingent cash payments as criteria for liability classification. (3) These warrants expired in February 2022. Liability Classified Preferred Investment Options The preferred investment options issued in connection with the August 2022 Registered Direct Offering contain certain early settlement provisions that preclude them from equity classification and therefore were accounted for as liabilities at the date of issuance and are adjusted to fair value at each balance sheet date. The change in fair value of the options liabilities is recorded as change in fair value of common stock warrant and option liabilities in the consolidated statements of operations and comprehensive loss. The key terms and activity of the liability classified preferred investment options are summarized as follows:
|  | Issuance Date |  | Term |  | Exercise Price Per Share |  |  | Exercised during the Year Ended December 31, 2021 |  |  | Outstanding at December 31, 2021 |  |  | Exercised during the Nine Months Ended September 30, 2022 |  |  | Outstanding at September 30, 2022 |
August 2022 Options |  | August 2022 |  | 5 years |  | $ | 0.93 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 4,722,506 |
August 2022 Placement Agent Options |  | August 2022 |  | 5 years |  | $ | 1.32 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 236,125 |
Total |  |  |  |  |  |  |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 4,958,631 |

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