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Stockholders’ Equity | 3 Months Ended
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Mar. 31, 2024
Equity [Abstract] |
Stockholders’ Equity | 10. Stockholders’ Equity Common Stock As of March 31, 2024, 4,113,621 shares of common stock were issued and outstanding, 255,958 shares of common stock were reserved for issuance upon the exercise of outstanding warrants, 497,330 shares of common stock were reserved for issuance under our 2015 Equity Incentive Plan, as amended (the “2015 Plan”), and 150,000 shares were reserved for issuance under our 2023 Non-Employee Director Compensation Plan. The following table describes the shares and warrants issued as part of our 2022 and 2020 private placements: Schedule of Shares and Warrants Issued
Issuance of Common Stock |  | Issue Date |  | Shares Issued |  |  | Price per share |  |  | Warrants Issued |  |  | Warrant Exercise Price |  |  | Warrant Fair Value |
Private Placement 2022 |  | April 1, 2022 |  |  | 1,242,588 |  |  | $ | 4.62 |  |  |  | 124,258 |  |  | $ | 4.62 |  |  | $ | 3.91 |
Private Placement 2020 |  | March 2, 2020 |  |  | 955,000 |  |  | $ | 4.00 |  |  |  | 95,500 |  |  | $ | 4.00 |  |  | $ | 3.90 |
Amortization of the debt issuance costs for the Private Placement 2022 offering was recorded at $60,595 and $38,931 for the three months ended March 31, 2024 and 2023, respectively. Amortization of the debt issuance costs for the Private Placement 2020 offering was recorded at $11,065 for the three months ended March 31, 2023. Warrants The following sets forth the warrants to purchase our common stock that were outstanding as of March 31, 2024: Schedule of Warrants to Purchase Common Stock
Warrants Outstanding |  |  | Warrant Exercise Price |  |  | Warranty Expiry
| 124,258 |  |  | $ | 4.62 |  |  | March 30, 2027
| 95,500 |  |  | $ | 4.00 |  |  | March 30, 2027
| 16,000 |  |  | $ | 9.00 |  |  | March 30, 2027
| 17,200 |  |  | $ | 12.50 |  |  | March 30, 2027
| 3,000 |  |  | $ | 15.00 |  |  | March 30, 2027

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