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Warrants Classified as Liabilities | 3 Months Ended
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Mar. 31, 2024
Warrants Classified as Liabilities [Abstract] |
Warrants Classified as Liabilities | Note 8. Warrants Classified as Liabilities In November 2022 and June 2023, the Company completed registered direct offerings and sold shares of its common stock and common stock purchase warrants (the “Purchase Warrants”). The securities purchase agreements governing the Purchase Warrants provide for a value calculation for such warrants using the Black Scholes model in the event of certain fundamental transactions. The fair value calculation provides for a floor on the volatility amount utilized in the value calculation at 100% or greater. The Company has determined this provision introduces leverage to the holders of the Purchase Warrants that could result in a value that would be greater than the settlement amount of a fixed-for-fixed option on the Company’s own equity shares. Therefore, pursuant to ASC 815, the Company has classified the Purchase Warrants as liabilities in its condensed consolidated balance sheets. The classification of the Purchase Warrants, including whether the Purchase Warrants should be recorded as liabilities or as equity, is evaluated at the end of each reporting period with changes in the fair value reported in other income (expense) in the consolidated statements of operations and comprehensive loss. As of March 31, 2024 and December 31, 2023, the Company had the following liability-classified warrants outstanding (amounts in thousands):
|  | Number of Shares |  |  | Exercise Price |  |  | Expiration Date
Warrants issued - November 2022 |  |  | 92 |  |  | $ | 40.00 |  |  | May 28, 2028
Warrants issued - June 2023 |  |  | 143 |  |  | $ | 28.00 |  |  | June 2, 2028
|  |  | 235 |  |  |  |  |  |  |
|  | Number of Shares |  |  | Fair Value |
Balance as of December 31, 2023 |  |  | 235 |  |  | $ | 1,748 |
Change in fair value of warrants |  |  | — |  |  |  | (1,591 | )
Balance as of March 31, 2024 |  |  | 235 |  |  | $ | 157 |
The fair value of the Purchase Warrants at March 31, 2024 was determined using the Black Scholes model with the assumptions in the following table. The table also includes the total fair value determined at the valuation date based on these assumptions.
|  | 2022 Purchase Warrant |  |  | 2023 Purchase Warrant |
Expected term based on contractual term |  |  | 4.2 years |  |  |  | 4.2 years |
Interest rate (risk-free rate) |  |  | 4.22 | % |  |  | 4.22 | %
Expected volatility |  |  | 124 | % |  |  | 124 | %
Expected dividend yield |  |  | — |  |  |  | — |
Fair value of warrants (in thousands) |  | $ | 57 |  |  | $ | 100 |
The fair value of the Purchase Warrants at December 31, 2023 was determined using the Black Scholes model with the assumptions in the following table. The table also includes the total fair value determined at valuation date based on these assumptions.
|  | 2022 Purchase Warrant |  |  | 2023 Purchase Warrant |
Expected term based on contractual term |  |  | 4.4 years |  |  |  | 4.4 years |
Interest rate (risk-free rate) |  |  | 3.84 | % |  |  | 3.84 | %
Expected volatility |  |  | 116 | % |  |  | 116 | %
Expected dividend yield |  |  | — |  |  |  | — |
Fair value of warrants (in thousands) |  | $ | 653 |  |  | $ | 1,095 |

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