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Common, Preferred Stock and Warrants (Tables) | 6 Months Ended
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Jun. 30, 2026
Common, Preferred Stock and Warrants |
Schedule of fair value of the warrants estimated using the Black-Scholes option pricing model | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | 2025 Investor Warrants | ​ | 2025 Underwriter Warrants
​ | ​ | July 17, 2025 | ​ | July 23, 2025 | ​ | July 17, 2025 | ​ | July 23, 2025
Market price at grant date | ​ | $ | 1.61 | ​ | ​ | $ | 1.68 | ​ | ​ | $ | 1.61 | ​ | ​ | $ | 1.68 | ​
Volatility | ​ | ​ | 87.50 | % | ​ | ​ | 87.50 | % | ​ | ​ | 85.00 | % | ​ | ​ | 85.00 | %
Expected term (years) | ​ | ​ | 2.50 | ​ | ​ | ​ | 2.50 | ​ | ​ | ​ | 2.75 | ​ | ​ | ​ | 2.74 | ​
Risk-free interest rate | ​ | ​ | 3.83 | % | ​ | ​ | 3.79 | % | ​ | ​ | 3.82 | % | ​ | ​ | 3.78 | %
Expected dividend yield | ​ | ​ | — | ​ | ​ | ​ | — | ​ | ​ | ​ | — | ​ | ​ | ​ | — | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Grant date fair value per share | ​ | $ | 0.85 | ​ | ​ | $ | 0.90 | ​ | ​ | $ | 0.80 | ​ | ​ | $ | 0.85 | ​
Schedule of Company's issued and outstanding warrants | Below is a summary of the Company’s issued and outstanding warrants as of June 30, 2026:
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Warrants | ​ | Warrants | ​ | Weighted Average
Expiration Date | ​ | Outstanding | ​ | Exercisable | ​ | Exercise Price
November 24, 2028 | ​ | 3,361,484 | ​ | 3,361,484 | ​ | $ | 2.75
June 17, 2029 | ​ | 106,914 | ​ | 106,914 | ​ | ​ | 1.69
July 17, 2030 | ​ | 1,799,254 | ​ | 1,799,254 | ​ | ​ | 1.71
Outstanding as of June 30, 2026 | ​ | 5,267,652 | ​ | 5,267,652 | ​ | $ | 2.37
Schedule of Company's warrants activity | ​
​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Weighted Average
​ | ​ ​ | Warrants | ​ | Exercise Price
Outstanding as of December 31, 2025 | ​ | 5,759,453 | ​ | $ | 2.31
Exercised: | ​ | ​ | ​ | ​ | ​
Investor Warrants (a) | ​ | (1,250) | ​ | ​ | 1.65
Agent Warrants (a) | ​ | (490,551) | ​ | ​ | 1.69
Outstanding as of June 30, 2026 | ​ | 5,267,652 | ​ | $ | 2.37
​ ​
(a) | In the six months ended June 30, 2026, 1,250 investor warrants and 490,551 placement agent warrants were exercised and resulted in net proceeds of $2 thousand. In connection with the cashless exercise of the placement agent warrants, 228,460 shares were issued and 262,091 shares were withheld to cover the warrants’ exercise price.

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- Definition Tabular disclosure of input and valuation technique used to measure fair value and change in valuation approach and technique for each separate class of asset and liability measured on recurring and nonrecurring basis. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 103 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-103 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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- Definition Tabular disclosure of warrants or rights issued. Warrants and rights outstanding are derivative securities that give the holder the right to purchase securities (usually equity) from the issuer at a specific price within a certain time frame. Warrants are often included in a new debt issue to entice investors by a higher return potential. The main difference between warrants and call options is that warrants are issued and guaranteed by the company, whereas options are exchange instruments and are not issued by the company. Also, the lifetime of a warrant is often measured in years, while the lifetime of a typical option is measured in months. Disclose the title of issue of securities called for by warrants and rights outstanding, the aggregate amount of securities called for by warrants and rights outstanding, the date from which the warrants or rights are exercisable, and the price at which the warrant or right is exercisable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481112/505-10-50-3 + Details
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