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Warrants (Tables) | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2025 | Dec. 31, 2024
Warrants [Abstract] |  |
Schedule of Private Warrants Outstanding | The following table represents the Private Warrants outstanding at June 30, 2025 and December 31, 2024:
|  | Issued Date |  | Exercise Price |  |  | Number of shares |  |  | Expiration Date
Series A |  | January 2013 |  | $ | 63.36 |  |  |  | 631 |  |  | January 2028
Series B |  | June 2015 |  |  | 229.99 |  |  |  | 434 |  |  | June 2030
Series E |  | July 2022 |  |  | 1,284.95 |  |  |  | 778 |  |  | July 2029
Total |  |  |  |  |  |  |  |  | 1,843 |  |  |
| The following table represents the Private Warrants outstanding as of December 31, 2024:
|  | Issued Date |  | Exercise Price |  |  | Number of shares |  |  | Expiration Date
Series A |  | January 2013 |  | $ | 63.36 |  |  |  | 631 |  |  | January 2028
Series B |  | June 2015 |  |  | 229.99 |  |  |  | 434 |  |  | June 2030
Series E |  | July 2022 |  |  | 1,284.95 |  |  |  | 778 |  |  | July 2029
Total |  |  |  |  |  |  |  |  | 1,843 |  |  |
The following table represents the convertible preferred stock warrants outstanding as of December 31, 2023:
|  | Issued Date |  | Exercise Price |  |  | Number of shares |  |  | Expiration Date
Series A |  | January 2013 |  | $ | 63.36 |  |  |  | 631 |  |  | January 2028
Series B |  | June 2015 |  |  | 229.98 |  |  |  | 434 |  |  | June 2030
Series C |  | July 2017 |  |  | 574.55 |  |  |  | 293 |  |  | July 2024
Series D |  | September 2017 |  |  | 1,087.80 |  |  |  | 2,206 |  |  | September 2024
Series E |  | July 2022 |  |  | 1,284.95 |  |  |  | 778 |  |  | July 2029
Total |  |  |  |  |  |  |  |  | 4,342 |  |  |
Schedule of Assumptions Were Used to Calculate the Fair Value | The following assumptions were used to calculate the fair value of the Triton Warrants upon issuance as of February 13, 2025 using the Black-Scholes pricing model:
|  | February 13, 2025 |
Stock price |  | $ | 24.60 |
Exercise price |  | $ | 10.00 |
Effective expiration date |  |  | 8/13/2030 |
Term (years) |  |  | 5.5 |
Volatility |  |  | 84 | %
Risk-free rate |  |  | 4.4 | %
Schedule of Fair Value of the Convertible Preferred Stock Warrant Liability |  | The following assumptions were used to calculate the fair value of the convertible preferred stock warrant liability as of December 31, 2023 under PWERM:
|  | December 31, 2023 |
Fair value of common stock(1) |  | $ | 4.08 |
Discount rate(2) |  |  | 15 | %
Probability(3) |  |  | 10%—90 | %
Exercise Price(4) |  | $ | 0.00—$4.35 |
Expected term (in years)(5) |  |  | 0.50 years |
(1) | The fair value of Legacy Bolt Common Stock was determined by management with the assistance of an independent third-party valuation specialist.
(2) | The discount rate was the expected rate of return and was determined by management with the assistance of an independent third-party valuation specialist.
(3) | Scenario probability based on timing expectations of management that a qualified offering occurring as of December 31, 2023 was estimated at 90% and no qualified offering occurred was estimated at 10%.
(4) | The warrants have varying exercise prices, with certain warrants having an exercise price higher than the value of the Company’s common shares at the time of valuation.
(5) | The expected term represents the period of time that warrants granted are expected to be outstanding.
Schedule of Monte Carlo Simulation Model to Value the Public Warrants |  | The key inputs for the Monte Carlo simulation model to value the Public Warrants at December 31, 2024 were as follows:
|  | December 31, 2024 |
Stock price |  | $ | 9.60 |
Exercise price for whole share of common stock |  | $ | 230.00 |
Redemption threshold |  | $ | 360.00 |
Effective expiration date |  |  | August 13, 2029 |
Term (years) |  |  | 4.62 |
Volatility |  |  | 80.4 | %
Risk-free rate |  |  | 4.27 | %

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- Definition Warrants And Rights + References No definition available. + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for stock options and stock appreciation rights that were outstanding at the beginning and end of the year, exercisable at the end of the year, and the number of stock options and stock appreciation rights that were granted, exercised or converted, forfeited, and expired during the year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + 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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