Note 9 — STOCKHOLDERS’ EQUITY

Warrants

In January, February and March 2024, 14 warrant holders of Legacy Montana exercised their warrants to purchase a total of 380,771 shares of Class A common stock, as converted, for a total purchase price of $45,760.

As part of XPDB’s initial public offering (“IPO”), XPDB issued 14,375,000 warrants to 37 investors where each whole warrant entitles the holder to purchase one share of the Company’s Class A common stock at an exercise price of $11.50 per share (the “Public Warrants”). Simultaneously with the closing of the IPO, XPDB completed the private sale of 11,125,000 warrants where each warrant allows the holder to purchase one share of the Company’s Class A common stock at $11.50 per share. In June 2024, 10 third-party

investors exercised their Public Warrants on a cashless basis for a total of 705,758 Class A shares of the Company. In August 2024, 2,225,000 Private Placement warrants were transferred.

As of June 30, 2025, there are 12,657,596 Public Warrants and 8,900,000 Private Placement warrants outstanding.

The Private Placement Warrants (including the common stock issuable upon exercise of the Private Placement Warrants) were not transferable, assignable or saleable until 30 days after the consummation of the Business Combination (except, among other limited exceptions, to the Company’s officers and directors and other persons or entities affiliated with the XPDB’s sponsor and anchor investors) and they will not be redeemable by the Company. The Private Placement Warrants have terms and provisions that are identical to those of the Public Warrants, including as to exercise price, exercisability and exercise period, except that the Private Placement Warrants are exercisable on a cashless basis and are non-redeemable.

If holders of the Private Placement Warrants elect to exercise them on a cashless basis, they would pay the exercise price by surrendering their warrants for that number of shares of the Company’s common stock equal to the quotient obtained by dividing (x) the product of the number of shares of the Company’s common stock underlying the warrants multiplied by the excess of the 10 day average closing price (defined below) as of the date prior to the date on which notice of exercise is sent or given to the warrant agent, less the warrant exercise price by (y) the 10 day average closing price. The 10 day average closing price means, as of any date, the average last reported sale price (defined below) of the shares of the Company’s common stock as reported during the 10 trading day period ending on the trading day prior to such date. Last reported sale price means the last reported sale price of the Company’s common stock on the date on which the notice of exercise of the warrant is sent to the warrant agent.

These Public Warrants expire on the fifth anniversary of the Business Combination or earlier upon redemption or liquidation and are exercisable commencing 30 days after the Business Combination, provided that the Company has an effective registration statement under the Securities Act covering the shares of common stock issuable upon exercise of the warrants and a current prospectus relating to them is available (or the Company permits holders to exercise their warrants on a cashless basis under the circumstances specified in the warrant agreement) and registered, qualified or exempt from registration under the securities, or blue sky, laws of the state of residence of the holder.

Once the Public Warrants become exercisable, the Company may redeem the outstanding Public Warrants:

The Company accounts for the warrants issued in connection with the IPO in accordance with the guidance contained in ASC 815. Such guidance provides that the warrants described above are not precluded from equity classification. Equity-classified contracts are initially measured at fair value (or allocated value). Subsequent changes in fair value are not recognized as long as the contracts continue to be classified in equity.

Subscription Agreements

During the year ended December 31, 2024, the Company entered into subscription agreements with various investors (the “Subscription Agreements”), which brought in approximately $61.8 million in gross proceeds. The Company issued and sold 5,807,647 shares of the Class A common stock to investors upon the Closing in exchange for equity interests issued by Legacy Montana pursuant to Subscription Agreements entered into by Legacy Montana with such investors in the first quarter of 2024, which resulted in gross proceeds of approximately $49.4 million, comprised of approximately $43.4 million received in the first quarter of 2024 and approximately $6.0 million in the second quarter of 2024. Of this total, TEP Montana purchased an aggregate of 5,116,176 shares in exchange for approximately $43.5 million pursuant to Subscription Agreements between Legacy Montana and TEP Montana. During the second quarter of 2024, the Company issued and sold an additional 1,238,500 shares of Class A common stock to investors pursuant to Subscription Agreements executed in the second quarter, which resulted in additional gross proceeds of approximately $12.4 million.

During the three months ended June 30, 2025, the Company entered into the April 2025 PIPE Subscription Agreements with the April 2025 PIPE Investors, pursuant to which, among other things, the April 2025 PIPE Investors agreed to subscribe for and purchase from

the Company, and the Company agreed to issue and sell to the April 2025 PIPE Investors, an aggregate of 3,775,126 newly issued shares of Class A common stock at a purchase price of $3.98 per share on the terms and subject to the conditions set forth therein. The April 2025 PIPE Subscription Agreements entitled the April 2025 PIPE Investors to shelf registration rights with respect to the shares of Class A common stock they purchased. The transaction closed on April 25, 2025, and the shares of Class A common stock were issued and sold to the April 2025 PIPE Investors in reliance on Section 4(a)(2) of the Securities Act.

Equity Financing

Legacy Montana completed a preferred equity financing during February 2023 with TEP Montana, and issued 4,426 Series B Preferred Units in conjunction with this transaction. Upon close of the Business combination, these shares were converted to 105,331 Class A common stock of the Company.