The Company follows the guidance in Accounting Standards Codification (“ASC”) 820, “Fair Value Measurement” for its assets and liabilities that are re-measured and reported at fair value at the end of each reporting period.

The fair value of the Company’s common stock warrant liabilities reflects management’s estimate of amounts that the Company would have received in connection with the sale of the assets or paid in connection with the transfer of the liabilities in an orderly transaction between market participants at the measurement date. The following fair value hierarchy is used to classify assets and liabilities based on the observable inputs and unobservable inputs used in order to value the assets and liabilities:

The Company classifies financial instruments in Level 3 of the fair value hierarchy when there is reliance on at least one significant unobservable input to the valuation model. In addition to these unobservable inputs, the valuation models for Level 3 financial instruments typically also rely on a number of inputs that are readily observable, either directly or indirectly. The Company’s assessment of a particular input to the fair value measurement requires management to make judgments and consider factors specific to the asset or liability. The fair value hierarchy requires the use of observable market data when available in determining fair value. The Company recognizes transfers between levels within the fair value hierarchy, if any, at the end of each period.

Assets and Liabilities Measured at Fair Value on a Recurring Basis

Financial Assets

The Company values its Level 1 assets, consisting of money market funds using quoted prices in active markets for identical instruments.

Credit Agreement Warrants

On June 13, 2022, in connection with the Blue Torch Financing Agreement, the Company issued the 2022 Blue Torch Warrants to Blue Torch, which were exercisable for an aggregate of 437,024 shares of the Company’s Class A common stock with a per share exercise price of $16.08. Additionally, in connection with the closing of the financing, the Company issued the Urgent Warrants to Urgent Capital LLC, which is exercisable for an aggregate of 24,834 shares of the Company’s Class A common stock with a per share exercise price of $16.08.

On September 27, 2023, in connection with the Waiver and Amendment, the Company and certain affiliates of Blue Torch amended and restated the 2022 Blue Torch Warrants to reduce the per share exercise price from $16.08 to $5.44. The Company

also concurrently issued the 2023 Blue Torch Warrants to those affiliates that are exercisable for an additional 597,082 shares of the Company’s Class A common stock at a per share exercise price of $5.44.

The fair value of the Credit Agreement Warrants is estimated using the Black-Scholes model with inputs that include the Company’s Class A common stock price in an actively traded market, making this fair value classified as a Level 2 financial instrument. The other significant assumptions used in the model are the exercise price, expected term, volatility, interest rate, and expected dividend yield.

Securities Purchase Agreement Warrants

On March 12, 2025, the Company entered into the 2025 Securities Purchase Agreement with the purchasers named therein for the 2025 Private Placement of (i) 4,843,750 shares of Class A common stock at a purchase price of $8.00 per share and (ii) Pre-Funded Warrants to purchase 156,250 shares of Class A common stock at a purchase price of $7.9999 per Pre-Funded Warrant. The Pre-Funded Warrants have an exercise price of $0.0001 per share of Class A common stock, are exercisable immediately, and will terminate when exercised in full. The Pre-Funded Warrants are initially recorded at fair value on the date of issuance which is equal to the proceeds received on March 14, 2025. The Pre-Funded Warrants are classified as liabilities because they contain provisions that could require settlement in cash under certain circumstances, resulting in the instruments not being considered indexed to the Company’s own stock. These Pre-Funded Warrants are measured at fair value at each reporting date, with changes in fair value recognized in the condensed consolidated statements of operations.

Contingent Earnout Liability

In connection with the Merger, eligible Spire equity holders are entitled to receive additional shares of the Company’s Class A common stock upon the achievement of certain earnout triggering events. The estimated fair value of the contingent earnout liability is determined using a Monte Carlo simulation using a distribution of potential outcomes on a monthly basis over the earnout period, which is a period up to five years post-closing of the Merger, prioritizing the most reliable information available, making this fair value classified as a Level 3 liability. The assumptions utilized in the calculation are based on the achievement of certain stock price milestones, including the current price of the Company’s Class A common stock, expected volatility, risk-free interest rate, expected term and expected dividend yield.

Cash and Cash Equivalents