Description of Organization and Business Operations | Note 1 – Description of Organization and Business Operations Organization and General Dune Acquisition Corporation (the “Company”) is a blank check company incorporated in Delaware on June 18, 2020. The Company was formed for the purpose of effecting a merger, capital stock exchange, asset acquisition, stock purchase, reorganization or similar business combination with one or more businesses (the “business combination”). The Company is an emerging growth company and, as such, the Company is subject to all of the risks associated with emerging growth companies. As of March 31, 2023, the Company had not commenced any operations. All activity for the period from June 18, 2020 (inception) through March 31, 2023 relates to the Company’s formation and the initial public offering (the “initial public offering”), described below, and since the closing of the initial public offering, the search for a prospective initial business combination. The Company will not generate any operating revenues until after the completion of its initial business combination, at the earliest. The Company generates non-operating income in the form of interest income from the proceeds derived from the initial public offering (as defined below). Sponsor and Financing The Company’s sponsor is Dune Acquisition Holdings LLC, a Delaware limited liability company (the “Sponsor”). The registration statement for the Company’s initial public offering was declared effective on December 17, 2020. On December 22, 2020, the Company consummated its initial public offering of 17,250,000 units (the “units”) and, with respect to the Class A common stock included in the units being offered, (the “public shares”), including 2,250,000 additional units to cover over-allotments (the “Over-Allotment Units”), at $10.00 per unit, generating gross proceeds of $172.5 million, and incurring offering costs of approximately $10.0 million, of which approximately $6.0 million was for deferred underwriting commissions (Note 6). Simultaneously with the closing of the initial public offering, the Company consummated the private placement (“private placement”) of 4,850,000 warrants (each, a “private placement warrant” and collectively, the “private placement warrants”) at a price of $1.00 per private placement warrant to the Sponsor, generating proceeds of approximately $4.9 million (Note 5). Trust Account Upon the closing of the initial public offering and the private placement, $172.5 million ($10.00 per Unit) of the net proceeds of the initial public offering and certain of the proceeds of the private placement was held in a trust account (the “trust account”) located in the United States with Continental Stock Transfer & Trust Company acting as trustee, and invested only in U.S. “government securities” within the meaning of Section 2(a)(16) of the Investment Company Act 1940, as amended (the “Investment Company Act”) having a maturity of 185 days or less or in money market funds meeting certain conditions under Rule 2a-7 promulgated under the Investment Company Act which invest only in direct U.S. government treasury obligations, as determined by the Company, until the earlier of: (i) the completion of a business combination and (ii) the distribution of the trust account as described below. On December 15, 2022, to mitigate the risk of us being deemed to have been operating as an unregistered investment company under the Investment Company Act, the Company instructed Continental Stock Transfer & Trust Company, the trustee with respect to the trust account, to liquidate the U.S. government treasury obligations or money market funds held in the trust account and thereafter to hold all funds in the trust account in cash (i.e., in one or more interest-bearing demand deposit accounts) until the earlier of the consummation of a business combination or our liquidation. As of March 31, 2023, the funds in the trust account are held solely in an interest-bearing demand deposit account. June 2022 Extension Special Meeting of Stockholders On June 14, 2022, the Company held a special meeting of stockholders (the “Special Meeting”). At the Special Meeting, the Company’s stockholders approved an amendment to the Company’s Amended and Restated Certificate of Incorporation (the “Charter Amendment”) to extend the date by which the Company must complete a business combination from June 22, 2022 to December 22, 2023. In connection with the Special Meeting, stockholders holding 16,409,033 public shares exercised their right to redeem such shares for a pro rata portion of the funds held in the trust account, which would have resulted in (i) approximately $164.1 million (approximately $10.00 per share) being removed from the trust account to pay such holders, (ii) approximately $8.4 million remaining in the trust account and (iii) 5,153,467 shares of common stock outstanding (including 840,967 public shares and 4,312,500 Founder Shares (as defined in Note 4)). On June 15 and 16, 2022, the Company consented to requests to reverse the redemptions of an aggregate of 341,087 public shares. As a result of such redemption reversals, (i) stockholders holding an aggregate of 16,067,946 public shares exercised and have not reversed their right to redeem such shares for a pro rata portion of the funds held in the trust account, (ii) approximately $160.7 million (approximately $10.00 per share) was removed from the trust account to pay such holders, (iii) approximately $11.8 million remained in the trust account and (iv) 5,494,554 shares of common stock remained outstanding (including 1,182,054 public shares and 4,312,500 Founder Shares). Initial Business Combination The Company’s management has broad discretion with respect to the specific application of the net proceeds of the initial public offering and the sale of private placement warrants, although substantially all of the net proceeds are intended to be applied generally toward consummating a business combination. There is no assurance that the Company will be able to complete a business combination successfully. The Company must complete one or more initial business combinations having an aggregate fair market value of at least 80% of the net assets held in the trust account (excluding the deferred underwriting commissions and taxes payable on the interest earned on the trust account) at the time of signing a definitive agreement in connection with the initial business combination. However, the Company will only complete a business combination if the post-transaction company owns or acquires 50% or more of the voting securities of the target or otherwise acquires a controlling interest in the target sufficient for it not to be required to register as an investment company under the Investment Company Act. The Company will provide the holders of the public shares (the “public stockholders”) with the opportunity to redeem all or a portion of their public shares upon the completion of a business combination either (i) in connection with a stockholder meeting called to approve the business combination or (ii) by means of a tender offer. The decision as to whether the Company will seek stockholder approval of a business combination or conduct a tender offer will be made by the Company, solely in its discretion. The public stockholders will be entitled to redeem their public shares for a pro rata portion of the amount then held in the trust account (initially anticipated to be $10.00 per public share). The per-share amount to be distributed to public stockholders who redeem their public shares will not be reduced by the deferred underwriting commissions the Company will pay to the underwriters (as discussed in Note 6). These public shares are recorded at a redemption value and classified as temporary equity in accordance with the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Topic 480 “Distinguishing Liabilities from Equity.” The Company will proceed with a business combination if a majority of the shares voted are voted in favor of the business combination. The Company will not redeem the public shares in an amount that would cause its net tangible assets to be less than $5,000,001. If a stockholder vote is not required by law and the Company does not decide to hold a stockholder vote for business or other legal reasons, the Company will, pursuant to its Certificate of Incorporation (the “Certificate of Incorporation”), conduct the redemptions pursuant to the tender offer rules of the U.S. Securities and Exchange Commission (“SEC”) and file tender offer documents with the SEC prior to completing a business combination. If, however, stockholder approval of the transaction is required by law, or the Company decides to obtain stockholder approval for business or legal reasons, the Company will offer to redeem shares in conjunction with a proxy solicitation pursuant to the proxy rules and not pursuant to the tender offer rules. Additionally, each public stockholders may elect to redeem their public shares irrespective of whether they vote for or against the proposed transaction. If the Company seeks stockholder approval in connection with a business combination, the initial stockholders (as defined below) agreed to vote their Founder Shares (as defined below in Note 5) and any public shares purchased during or after the initial public offering in favor of a business combination. In addition, the initial stockholders agreed to waive their redemption rights with respect to their Founder Shares and public shares in connection with the completion of a business combination. The Certificate of Incorporation provides that a public stockholder, together with any affiliate of such stockholder or any other person with whom such stockholder is acting in concert or as a “group” (as defined under Section 13 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”)), will be restricted from redeeming its shares with respect to more than an aggregate of 20% or more of the public shares, without the prior consent of the Company. The Sponsor and the Company’s officers and directors (the “initial stockholders”) agreed not to propose an amendment to the Certificate of Incorporation to modify the substance or timing of the Company’s obligation to redeem 100% of the public shares if the Company does not complete a business combination within the Combination Period (as defined below) or with respect to any other material provisions relating to stockholders’ rights or pre-initial business combination activity, unless the Company provides the public stockholders with the opportunity to redeem their public shares in conjunction with any such amendment. If the Company is unable to complete a business combination within 36 months from the closing of the initial public offering, or December 22, 2023 (the “Combination Period”), the Company will (i) cease all operations except for the purpose of winding up, (ii) as promptly as reasonably possible but not more than ten business days thereafter, redeem the public shares, at a per-share price, payable in cash, equal to the aggregate amount then on deposit in the trust account, including interest earned on the funds held in the trust account and not previously released to the Company to pay its taxes (less up to $100,000 of interest to pay dissolution expenses), divided by the number of then outstanding public shares, which redemption will completely extinguish public stockholders’ rights as stockholders (including the right to receive further liquidating distributions, if any), and (iii) as promptly as reasonably possible following such redemption, subject to the approval of the remaining stockholders and the board of directors, liquidate and dissolve, subject, in each case, to the Company’s obligations under Delaware law to provide for claims of creditors and the requirements of other applicable law. The initial stockholders agreed to waive their rights to liquidating distributions from the trust account with respect to the Founder Shares if the Company fails to complete a business combination within the Combination Period. However, if the initial stockholders acquire public shares in or after the initial public offering, they will be entitled to liquidating distributions from the trust account with respect to such public shares if the Company fails to complete a business combination within the Combination Period. The underwriters agreed to waive their rights to the deferred underwriting commission (see Note 6) held in the trust account in the event the Company does not complete a business combination within the Combination Period and, in such event, such amounts will be included with the other funds held in the trust account that will be available to fund the redemption of the public shares. In the event of such distribution, it is possible that the per share value of the residual assets remaining available for distribution (including trust account assets) will be only $10.00. In order to protect the amounts held in the trust account, the Sponsor has agreed to be liable to the Company if and to the extent any claims by a third party (except for the Company’s independent registered public accounting firm) for services rendered or products sold to the Company, or a prospective target business with which the Company has entered into a letter of intent, confidentiality or other similar agreement or business combination agreement (a “Target”), reduce the amount of funds in the trust account to below the lesser of (i) $10.00 per public share and (ii) the actual amount per public share held in the trust account as of the date of the liquidation of the trust account, if less than $10.00 per public shares due to reductions in the value of the trust assets, less taxes payable, provided that such liability will not apply to any claims by a third party or Target that executed a waiver of any and all rights to the monies held in the trust account (whether or not such waiver is enforceable) nor will it apply to any claims under the Company’s indemnity of the underwriters of the initial public offering against certain liabilities, including liabilities under the Securities Act of 1933, as amended (the “Securities Act”). The Company will seek to reduce the possibility that the Sponsor will have to indemnify the trust account due to claims of creditors by endeavoring to have all vendors, service providers, except for the Company’s independent registered public accounting firm, prospective target businesses or other entities with which the Company does business, execute agreements with the Company waiving any right, title, interest or claim of any kind in or to monies held in the trust account. Proposed Business Combination On October 12, 2021, the Company entered into an Agreement and Plan of Merger (the “Merger Agreement”), by and among the Company, Dune Merger Sub, Inc., a Delaware corporation and a direct wholly-owned subsidiary of the Company (“Merger Sub”), Dune Merger Sub II, LLC, a Delaware limited liability company and direct, wholly owned subsidiary the Company (“Merger Sub II”), and TradeZero Holding Corp., a Delaware corporation (“TradeZero”). Dispute Relating to the Business Combination with TradeZero On April 1, 2022, the Company, along with Merger Sub, Merger Sub II and the Sponsor (collectively, the “Dune Plaintiffs”) filed a four-count complaint in the Delaware Court of Chancery against TradeZero and Messrs. Pipitone, Ferrara, Muscatella, Choi, Koslow, Caruso and Corriveau (together, the “TradeZero Defendants”), each of whom are part of TradeZero’s management team. The Dune Plaintiffs asserted claims for breach of contract, fraudulent inducement, fraudulent misrepresentation and unjust enrichment against the TradeZero Defendants. On May 3, 2022, after careful consideration and consultation with the Company’s management and outside legal advisors, the Company’s board of directors (the “Board”), who had previously unanimously endorsed and approved of the business combination with TradeZero, announced that it had changed its recommendation to the Company’s stockholders and then unanimously recommended that the Company’s stockholders vote against the business combination with TradeZero. On May 5, 2022, the TradeZero Defendants filed a motion to dismiss the Dune Plaintiffs’ lawsuit; on July 8, 2022, the Company filed an amended complaint; and on July 22, 2022 TradeZero filed a motion to dismiss the amended complaint. On July 13, 2022, the Company received a notice from TradeZero that purported to terminate the Merger Agreement pursuant to Sections 10.01(c) and 10.01(i) thereof (the “Purported Termination Notice”). On July 15, 2022, the Company sent a letter to TradeZero in response to the Purported Termination Notice stating, among other things, that TradeZero is not permitted to terminate the Merger Agreement because of TradeZero’s breaches of, and failure to perform under, the Merger Agreement. On December 28, 2022, the Dune Plaintiffs entered into a Settlement Agreement and Release (the “Settlement Agreement”) with the TradeZero Defendants, pursuant to which (i) the Company and TradeZero mutually agreed to terminate the Merger Agreement and (ii) the Dune Plaintiffs and the TradeZero Defendants agreed to a mutual release of all claims related to the Merger Agreement, the transactions contemplated thereby, and the lawsuit filed by the Dune Plaintiffs against TradeZero Defendants in the Delaware Court of Chancery, in each case effective upon receipt in full by the Dune Plaintiffs from the insurers of the TradeZero Defendants of $5,000,000 in settlement consideration within 15 business days of the date of the Settlement Agreement. The Company received its portion of the settlement consideration in the amount of $2.75 million in January 2023. For additional information regarding the Merger Agreement and the Settlement Agreement, see the Company’s Current Reports on Form 8-K filed with the Securities and Exchange Commission (the “SEC”) on October 12, 2021, January 26, 2022, July 15, 2022 and December 30, 2022 and the Company’s preliminary proxy statement (as amended), initially filed with the SEC on January 26, 2022. Liquidity, Capital Resources and Going Concern As of March 31, 2023, the Company had approximately $304,000 in cash in its operating account and a working capital deficit of approximately $112,000 (excluding tax obligations of approximately $128,000 that may be paid using investment income earned from the trust account). The Company’s liquidity needs prior to the consummation of the initial public offering were satisfied through the payment of $25,000 from the Sponsor to purchase Founders Shares (as defined in Note 4), and loan proceeds from the Sponsor of approximately $31,000 under the Note (Note 4). The Company repaid the loan in full on December 22, 2020. Subsequent to the consummation of the initial public offering, the Company’s liquidity has been satisfied through the net proceeds from the consummation of the initial public offering and the private placement held outside of the trust account. In addition, the Company’s portion of the settlement of the lawsuit with the TradeZero Defendants pursuant to the Settlement Agreement in the amount of $2.75 million was received in January 2023, substantially all of which was subsequently used to pay certain accounts payable and expenses of the Company. In connection with the Company’s assessment of going concern considerations in accordance with FASB Accounting Standards Update (“ASU”) 2014-15, “Disclosures of Uncertainties about an Entity’s Ability to Continue as a Going Concern,” the Company has until December 22, 2023 to consummate a business combination. It is uncertain that the Company will be able to consummate a business combination by this time. Management has determined that the liquidity position, mandatory liquidation and subsequent dissolution raises substantial doubt about the Company’s ability to continue as a going concern. Management intends to complete the business combination prior to the liquidation date. No adjustments have been made to the carrying amounts of assets or liabilities should the Company be required to liquidate after December 22, 2023. The Company intends to complete a proposed business combination before the mandatory liquidation date. However, there can be no assurance that the Company will be able to consummate any business combination by December 22, 2023. Risks and Uncertainties Management continues to evaluate the impact of the COVID-19 pandemic and has concluded that while it is reasonably possible that the virus could have a negative effect on the Company’s, or its target’s, financial position, results of its operations and/or completion of the business combination, the specific impact is not readily determinable as of the date of these unaudited condensed consolidated financial statements. The unaudited condensed consolidated financial statements do not include any adjustments that might result from the outcome of this uncertainty. In February 2022, the Russian Federation and Belarus commenced a military action with the country of Ukraine. As a result of this action, various nations, including the United States, have instituted economic sanctions against the Russian Federation and Belarus. Further, the impact of this action and related sanctions on the world economy are not determinable as of the date of these unaudited condensed consolidated financial statements and the specific impact on the Company’s financial condition, results of operations, and cash flows is also not determinable as of the date of these unaudited condensed consolidated financial statements. On August 16, 2022, the Inflation Reduction Act of 2022 (the “IR Act”) was signed into federal law. The IR Act provides for, among other things, a new U.S. federal 1% excise tax on certain repurchases of stock by publicly traded U.S. domestic corporations and certain U.S. domestic subsidiaries of publicly traded foreign corporations occurring on or after January 1, 2023. The excise tax is imposed on the repurchasing corporation itself, not its shareholders from which shares are repurchased. The amount of the excise tax is generally 1% of the fair market value of the shares repurchased at the time of the repurchase. However, for purposes of calculating the excise tax, repurchasing corporations are permitted to net the fair market value of certain new stock issuances against the fair market value of stock repurchases during the same taxable year. In addition, certain exceptions apply to the excise tax. The U.S. Department of the Treasury (the “Treasury”) has been given authority to provide regulations and other guidance to carry out and prevent the abuse or avoidance of the excise tax. Any share redemption or other share repurchase that occurs after December 31, 2022, in connection with a business combination, extension vote or otherwise, may be subject to the excise tax. Whether and to what extent the Company would be subject to the excise tax in connection with a business combination, extension vote or otherwise will depend on a number of factors, including (i) the fair market value of the redemptions and repurchases in connection with the business combination, extension or otherwise, (ii) the structure of a business combination, (iii) the nature and amount of any “PIPE” or other equity issuances in connection with a business combination (or otherwise issued not in connection with a business combination but issued within the same taxable year of a business combination) and (iv) the content of regulations and other guidance from the Treasury. In addition, because the excise tax would be payable by the Company and not by the redeeming holder, the mechanics of any required payment of the excise tax have not been determined. The foregoing could cause a reduction in the cash available on hand to complete a business combination and in the Company’s ability to complete a business combination. On December 27, 2022, the Treasury Department and Internal Revenue Service (“IRS”) issued a Notice 2023-2 (“Notice”), which provided interim guidance regarding the application of the corporate stock repurchase excise tax until the issuance of proposed regulations. The Notice excluded the distributions from a complete liquidation of a corporation from the base of the excise tax. The Notice also excludes from the scope of the excise tax any distribution made during the taxable year in which a corporation fully liquidates and dissolves, even if a distribution precedes the formal decision to liquidate. |