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Stockholders’ Deficit | 3 Months Ended | 12 Months Ended
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Mar. 31, 2024 | Dec. 31, 2023
Stockholders’ Deficit [Line Items] |  |
STOCKHOLDERS’ DEFICIT | Note 10 — STOCKHOLDERS’ DEFICIT Preferred Stock — The Company is authorized to issue 25,000,000 shares of preferred stock with a par value of $0.0001 per share. At March 31, 2024 and December 31, 2023, there were no shares of preferred stock issued and outstanding. Class A Common stock — The Company is authorized to issue 600,000,000 shares of common stock with a par value of $0.0001 per share. At March 31, 2024 and December 31, 2023, there were 49,063,770 shares and 32,731,583 shares of common stock issued and outstanding, respectively. Each share of Common Stock has one vote and has similar rights and obligations. Class B Common stock — The Company is authorized to issue 50,000,000 shares of common stock with a par value of $0.0001 per share. At March 31, 2024 and December 31, 2023, there were 4,759,642 shares issued and outstanding. Each share entitles the holder thereof to a number of votes per share such that the Legacy Montana Equityholders as of immediately prior to the Closing, immediately following the Closing, collectively owned shares representing at least 80% of the voting power of all classes of capital stock of the Post-Combination Company entitled to vote on matters submitted to a vote of the stockholders of the Post-Combination Company. Shares of Class B common stock shall be convertible into shares of Class A common stock on a one-for-one basis (i) at any time and from time to time at the option of the holder thereof or (ii) automatically upon on the earliest to occur of (a) the date that is seven (7) years from the date of the Second Amended and Restated Certificate of Incorporation and (b) the first date on which the permitted Class B owners cease to own, in the aggregate, at least 33.0% of the number of shares of Class B common stock issued and held by the permitted Class B owners immediately following the effective time of the Business Combination (or as to which the permitted Class B owners are entitled to as of such time), in each case, as equitably adjusted to reflect any stock splits, reverse stock splits, stock dividends, reorganization, recapitalization, reclassification, combination, exchange of shares or other like change or transaction (such date, the “Automatic Conversion Date”), each outstanding share of Class B Common Stock shall automatically, without any further action by the Corporation or any stockholder, convert into one (1) fully paid and nonassessable share of Class A common stock. Following such conversion, the reissuance of all shares of Class B common stock shall be prohibited, and such shares of Class B common stock shall be retired and may not be reissued. Warrants As part of XPDB’s initial public offering (“IPO”), XPDB issued warrants to third-party 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 warrants where each warrant allows the holder to purchase one share of the Company’s Class A common stock at $11.50 per share. At March 31, 2024, there are 14,375,000 Public Warrants and 11,125,000 Private Placement warrants outstanding. The Private Placement Warrants (including the common stock issuable upon exercise of the Private Placement Warrants) was 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. Except as described below, 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. 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 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: • in whole and not in part; • at a price of $0.01 per warrant; • upon a minimum 30 days’ prior written notice of redemption to each warrant holder; and • if, and only if, the reported last reported sale price of the Class A ordinary shares for any 20 trading days within a 30-trading day prior to the date on which the Company sends the notice of redemption to the warrant holders equals or exceeds $18.00 per share (as adjusted). 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 first quarter of 2024, Legacy Montana entered into common unit subscription agreements (the “Subscription Agreements”), with certain investors (the “Investors”), bringing aggregate transaction proceeds expected at closing to over $50,000,000. Pursuant to the Subscription Agreements, and subject to the conditions set forth therein, the Investors agreed to purchase from Legacy Montana, and Legacy Montana agreed to issue and sell to the Investors, an aggregate number of Class B common Units as will convert into an aggregate of 5,807,647 shares of the Montana Technologies Corporation’s Class A common stock upon the closing of the Business Combination between the Company and XPDB resulting in cash proceeds of approximately $40.0 million. As of March 31, 2024, approximately $6.0 million of proceeds have not been received yet and is recorded as a subscription receivable. Equity financing Montana Technologies LLC 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. Exercise of warrants In January, February and March 2024, 14 warrant holders of Legacy Montana exercised their warrants to purchase a total of 380,771 Class A common stock, as converted, for a total purchase price of $45,760. Options On April 5, 2023, Legacy Montana granted 383,151 options, as converted, exercisable for Class A Common stock to key team members of Legacy Montana. The options immediately vested, had an exercise price of $0.49, as converted, a term of seven years, and a grant date fair value of $0.14, as converted. The Company used the Black-Scholes option pricing model to estimate the fair value of stock options. Fair value is estimated at the date of grant. In January, February and March 2024, 13 option holders exercised their options to purchase a total of 2,141,839 Class A common stock, as converted, for a total purchase price of $56,250. As of March 31, 2024, of the 1,335,080 options that are outstanding, 594,955 options expire on December 7, 2030, 71,395 options expire on March 15, 2031, 285,579 options expire on April 8, 2031 and 383,151 options expire on April 4, 2030. |
Power & Digital Infrastructure Acquisition II Corp. [Member] |  |
Stockholders’ Deficit [Line Items] |  |
STOCKHOLDERS’ DEFICIT |  | NOTE 7 — STOCKHOLDERS’ DEFICIT Preferred Stock — The Company is authorized to issue 1,000,000 shares of preferred stock, par value $0.0001 per share, with such designations, voting and other rights and preferences as may be determined from time to time by the Company’s board of directors. As of December 31, 2023 and 2022, there were no shares of preferred stock issued or outstanding. Class A Common Stock — The Company is authorized to issue 500,000,000 shares of Class A common stock with a par value of $0.0001 per share. As of December 31, 2023 and 2022, there were 10,608,178 and 28,750,000, respectively, shares of Class A common stock issued and outstanding, all of which were subject to possible redemption and were classified outside of permanent equity in the accompanying consolidated balance sheets (see Note 6). In connection with the stockholders’ vote at the Special Meeting, the stockholders elected to redeem 18,141,822 shares of Class A common stock at a redemption price of approximately $10.37 per share, for an aggregate redemption amount of approximately $188,132,132. After the satisfaction of the Redemption, the balance in the Trust Account as of December 31, 2023 was approximately $114,641,527. Upon completion of the Redemption, 10,608,178 shares of Class A common stock and 7,187,500 shares of Class B common stock remain issued and outstanding. There are 489,391,282 authorized but unissued shares of our Class A common stock available for issuance which amount does not take into account shares reserved for issuance upon exercise of outstanding warrants or shares issuable upon conversion of the Class B common stock, if any. Class B Common Stock — The Company is authorized to issue 50,000,000 shares of Class B common stock with a par value of $0.0001 per share. As of December 31, 2023 and 2022, there were 7,187,500 shares of Class B common stock issued and outstanding. There are 42,812,500 authorized but unissued shares of our Class B common stock available for issuance which amount does not take into account shares reserved for issuance upon exercise of outstanding warrants or shares issuable upon conversion of the Class B common stock, if any. The Class B common stock is automatically convertible into Class A common stock at the time of our initial business combination as described herein and in our amended and restated certificate of incorporation. Common stockholders of record are entitled to one vote for each share held on all matters to be voted on by stockholders and vote together as a single class, except as required by law; provided, that, prior to the Company’s initial Business Combination, holders of the Class B common stock will have the right to appoint all of the Company’s directors and remove members of the board of directors for any reason, and holders of the Class A common stock will not be entitled to vote on the appointment of directors during such time. The Class B common stock will automatically convert into Class A common stock at the time of the initial Business Combination, or earlier at the option of the holder, on a one-for-one basis, subject to adjustment for stock splits, stock dividends, reorganizations, recapitalizations and the like, and subject to further adjustment as provided herein. In the case that additional shares of Class A common stock, or equity-linked securities, are issued or deemed issued in excess of the amounts issued in the Initial Public Offering and related to the closing of the initial Business Combination, the ratio at which the shares of Class B common stock will convert into shares of Class A common stock will be adjusted (unless the holders of a majority of the issued and outstanding shares of the Class B common stock agree to waive such anti-dilution adjustment with respect to any such issuance or deemed issuance) so that the number of shares of Class A common stock issuable upon conversion of all shares of Class B common stock will equal, in the aggregate, on an as-converted basis, 20% of the sum of all shares of common stock issued and outstanding upon the completion of the Initial Public Offering plus all shares of Class A common stock and equity-linked securities issued or deemed issued in connection with the initial Business Combination, excluding any shares or equity-linked securities issued, or to be issued, to any seller in the initial Business Combination. Warrants — As of December 31, 2023 and 2022, the Company has 14,375,000 and 11,125,000 Public Warrants and Private Placement Warrants outstanding, respectively. Public Warrants may only be exercised for a whole number of shares. No fractional Public Warrants will be issued upon separation of the Units and only whole Public Warrants will trade. The Public Warrants will become exercisable on the later of (a) 30 days after the completion of a Business Combination or (b) 12 months from the closing of the Initial Public Offering; provided in each case that the Company has an effective registration statement under the Securities Act covering the shares of Class A common stock issuable upon exercise of the Public Warrants and a current prospectus relating to them is available (or the Company permits holders to exercise their Public Warrants on a cashless basis and such cashless exercise is exempt from registration under the Securities Act). The Company agreed that as soon as practicable, but in no event later than 20 business days after the closing of its initial Business Combination, the Company will use its commercially reasonable efforts to file with the SEC and have an effective registration statement covering the shares of Class A common stock issuable upon exercise of the warrants and will use its commercially reasonable efforts to cause the same to become effective within 60 business days after the closing of the Company’s initial Business Combination and to maintain a current prospectus relating to those shares of Class A common stock until the warrants expire or are redeemed. If the shares issuable upon exercise of the warrants are not registered under the Securities Act in accordance with the above requirements, the Company will be required to permit holders to exercise their warrants on a cashless basis. However, no warrant will be exercisable for cash or on a cashless basis, and the Company will not be obligated to issue any shares to holders seeking to exercise their warrants, unless the issuance of the shares upon such exercise is registered or qualified under the securities laws of the state of the exercising holder, or an exemption from registration is available. Notwithstanding the above, if the Company’s shares of Class A common stock are at the time of any exercise of a warrant not listed on a national securities exchange such that they satisfy the definition of a “covered security” under Section 18(b)(1) of the Securities Act, the Company may, at its option, require holders of Public Warrants who exercise their warrants to do so on a cashless basis in accordance with Section 3(a)(9) of the Securities Act and, in the event the Company so elects, it will not be required to file or maintain in effect a registration statement, and in the event the Company does not so elect, it will use its commercially reasonable efforts to register or qualify the shares under applicable blue sky laws to the extent an exemption is not available. The warrants have an exercise price of $11.50 per share, subject to adjustments, and will expire five years after the completion of a Business Combination or earlier upon redemption or liquidation. In addition, if (x) the Company issues additional shares of Class A common stock or equity-linked securities for capital raising purposes in connection with the closing of the initial Business Combination at an issue price or effective issue price of less than $9.20 per share of Class A common stock (with such issue price or effective issue price to be determined in good faith by the Company’s board of directors and, in the case of any such issuance to the Sponsor or its affiliates, without taking into account any Founder Shares held by the Sponsor or such affiliates, as applicable, prior to such issuance) (the “Newly Issued Price”), (y) the aggregate gross proceeds from such issuances represent more than 60% of the total equity proceeds, and interest thereon, available for the funding of the initial Business Combination on the date of the completion of the initial Business Combination (net of redemptions), and (z) the volume weighted average trading price of the Class A common stock during the 20 trading day period starting on the trading day prior to the day on which the Company completes the initial Business Combination (such price, the “Market Value”) is below $9.20 per share, then the exercise price of the warrants will be adjusted (to the nearest cent) to be equal to 115% of the higher of the Market Value and the Newly Issued Price, the $18.00 per share redemption trigger prices described below under “Redemption of warrants when the price per share of Class A common stock equals or exceeds $18.00” to be equal to 180% of the higher of the Market Value and the Newly Issued Price described below under “Redemption of warrants when the price per share of Class A common stock equals or exceeds $18.00” will be adjusted (to the nearest cent) to be equal to the higher of the Market Value and the Newly Issued Price. The Private Placement Warrants will be non-redeemable and will be exercisable on a cashless basis at the option of the holder. Redemption of Public Warrants when the price per share of Class A common stock equals or exceeds $18.00: Once the warrants become exercisable, the Company may call the outstanding warrants for redemption (except as described herein with respect to the Private Placement Warrants): • in whole and not in part; • at a price of $0.01 per warrant; • upon a minimum of 30 days’ prior written notice of redemption to each warrant holder; and • if, and only if, the last reported sale price of Class A common stock for any 20 trading days within a 30-trading day period ending on the third trading day prior to the date on which the Company sends the notice of redemption to the warrant holders equals or exceeds $18.00 per share (as adjusted). Unless the Company has elected to require Public Warrant holders to exercise such warrants on a cashless basis, the Company will not redeem the Public Warrants as described above unless a registration statement under the Securities Act covering the issuance of the shares of Class A common stock issuable upon exercise of the warrants is then effective and a current prospectus relating to those shares of Class A common stock is available throughout the 30-day redemption period. If and when the Public Warrants become redeemable by the Company, the Company may exercise its redemption right even if it is unable to register or qualify the underlying securities for sale under all applicable state securities laws. If the Company is unable to complete a Business Combination within the Combination Period and the Company liquidates the funds held in the Trust Account, holders of warrants will not receive any of such funds with respect to their warrants, nor will they receive any distribution from the Company’s assets held outside of the Trust Account with the respect to such warrants. Accordingly, the warrants may expire worthless.

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