ONCH 10-Q Quarter ended Sept. 30, 2025

NOTE 1. DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS

1RT Acquisition Corp. (the “Company”) is a blank check company incorporated as a Cayman Islands exempted corporation on December 13, 2024 . The Company was incorporated for the purpose of effecting a merger, amalgamation, share exchange, asset acquisition, share purchase, reorganization or similar business combination with one or more businesses (the “Business Combination”).

As of September 30, 2025, the Company has not commenced any operations. All activity for the period from December 13, 2024 (inception) through September 30, 2025 relates to the Company’s formation, the Initial Public Offering (as defined below), and subsequent to the Initial Public Offering, identifying a target company for a 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). The Company has selected December 31 as its fiscal year end.

The registration statement for the Company’s Initial Public Offering was declared effective on July 1, 2025. On July 3, 2025, the Company consummated the Initial Public Offering of 17,250,000 units (the “Units” and, with respect to the Class A ordinary shares included in the Units being offered, the “Public Shares”), which includes the full exercise by the underwriters of their over-allotment option in the amount of 2,250,000 Units, at $ 10.00 per Unit, generating gross proceeds of $ 172,500,000 . Each Unit consists of one Class A ordinary share and one-quarter of one redeemable warrant (“Public Warrant”). Each whole warrant will entitle the holder to purchase one Class A ordinary share at a price of $ 11.50 per share, subject to adjustment. Each warrant will become exercisable 30 days after the completion of the initial Business Combination and will expire five years after the completion of the initial Business Combination, or earlier upon redemption or liquidation.

The Company’s Sponsor is 1RT Acquisition Sponsor LLC (the “Sponsor”). Simultaneously with the closing of the Initial Public Offering, the Company consummated the sale of an aggregate of 2,250,000 Private Placement Warrants (including if the underwriters’ over-allotment option is exercised in full) (the “Private Placement Warrants”) in a private placement to the Sponsor and Cantor Fitzgerald & Co., the representative of the underwriters of the Initial Public Offering, at a price of $ 2.00 per warrant, or $ 4,500,000 in the aggregate. Of those 2,250,000 Private Placement Warrants, the Sponsor purchased 1,500,000 Private Placement Warrants and Cantor Fitzgerald & Co. purchased 750,000 Private Placement Warrants. Each whole warrant entitles the holder to purchase one Class A ordinary share at a price of $ 11.50 per share. The Company’s management has broad discretion with respect to the specific application of the net proceeds of the Initial Public Offering and the Private Placement Warrants, although substantially all of the net proceeds are intended to be generally applied toward consummating a Business Combination (less deferred underwriting commissions).

Transaction costs amounted to $ 11,867,239 , consisting of $ 3,000,000 of cash underwriting fees, $ 8,212,500 of deferred underwriting fees, and $ 654,739 of other offering costs.

The Company’s Business Combination must be with one or more target businesses that together have a fair market value equal to at least 80 % of the net balance in the Trust Account (as defined below) (excluding the amount of deferred underwriting discounts held and taxes payable on the income earned on the Trust Account) at the time of the signing an agreement to enter into a Business Combination. However, the Company will only complete a Business Combination if the post-Business Combination company owns or acquires 50 % or more of the outstanding 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 of 1940, as amended (the “Investment Company Act”). There is no assurance that the Company will be able to successfully effect a Business Combination.

Following the closing of the Initial Public Offering, on July 3, 2025, an amount of $ 172,500,000 ($ 10.00 per Unit) from the net proceeds of the sale of the Units and the Private Placement Warrants was placed in the trust account (the “Trust Account”), with Continental Stock Transfer & Trust Company acting as trustee. The funds may only be invested in U.S. government treasury obligations with a maturity of 185 days or less or in money market funds meeting certain conditions under Rule 2a-7 under the Investment Company Act which invest only in direct U.S. government treasury obligations; the holding of these assets in this form is intended to be temporary and for the sole purpose of facilitating the intended business combination. To mitigate the risk that the Company might be deemed to be an investment company for purposes of the Investment Company Act, which risk increases the longer that the Company holds investments in the Trust Account, the Company may, at any time (based on the management team’s ongoing assessment of all factors related to the Company’s potential status under the Investment Company Act), instruct the trustee to liquidate the investments held in the Trust Account and instead to hold the funds in the Trust Account in cash or in an interest bearing demand deposit account at a bank. Except with respect to interest earned on the funds held in the Trust Account that may be released to the Company to pay its taxes, if any, the proceeds from the Initial Public Offering and the sale of the Private Placement Warrants will not be released from the Trust Account until the earliest of (i) the completion of the Company’s initial Business Combination, (ii) the redemption of the Company’s public shares if the Company is unable to complete the initial Business Combination within 24 months from the closing of the Initial Public Offering or by such earlier liquidation date as the Company’s board of directors may approve (the “Completion Window”), subject to applicable law, or (iii) the redemption of the Company’s public shares properly submitted in connection with a shareholder vote to amend the Company’s amended and restated memorandum and articles of association to (A) modify the substance or timing of the Company’s obligation to allow redemption in connection with the initial Business Combination or to redeem 100 % of the Company’s public shares if the Company has not consummated an initial Business Combination within the Completion Window or (B) with respect to any other material provisions relating to shareholders’ rights or pre-initial Business Combination activity. The proceeds deposited in the Trust Account could become subject to the claims of the Company’s creditors, if any, which could have priority over the claims of the Company’s public shareholders.

NOTE 2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

NOTE 3. INITIAL PUBLIC OFFERING

Pursuant to the Initial Public Offering on July 3, 2025, the Company sold 17,250,000 Units, which includes the full exercise by underwriters of their over-allotment option in the amount of 2,250,000 Units at a purchase price of $ 10.00 per Unit. Each Unit that the Company is offering has a price of $ 10.00 and consists of one Class A ordinary share and one-quarter of one redeemable warrant (“Public Warrant”). Each whole warrant will entitle the holder to purchase one Class A ordinary share at a price of $ 11.50 per share, subject to adjustment. Each warrant will become exercisable 30 days after the completion of the initial Business Combination and will expire five years after the completion of the initial Business Combination, or earlier upon redemption or liquidation.

Public Warrants — As of September 30, 2025, there are 4,312,500 Public Warrants outstanding. At December 31, 2024, there are no Public Warrants outstanding. Each whole warrant entitles the holder to purchase one Class A ordinary share at a price of $ 11.50 per share, subject to adjustment as discussed herein. The warrants cannot be exercised until 30 days after the completion of the initial Business Combination, and will expire at 5:00 p.m., New York City time, five years after the completion of the initial Business Combination or earlier upon redemption or liquidation.

The Company will not be obligated to deliver any Class A ordinary shares pursuant to the exercise of a warrant and will have no obligation to settle such warrant exercise unless a registration statement under the Securities Act with respect to the Class A ordinary shares underlying the warrants is then effective and a prospectus relating thereto is current. No warrant will be exercisable and the Company will not be obligated to issue a Class A ordinary share upon exercise of a warrant unless the Class A ordinary share issuable upon such warrant exercise has been registered, qualified or deemed to be exempt under the securities laws of the state of residence of the registered holder of the warrants. In the event that the conditions in the two immediately preceding sentences are not satisfied with respect to a warrant, the holder of such warrant will not be entitled to exercise such warrant and such warrant may have no value and expire worthless. In no event will the Company be required to net cash settle any warrant. In the event that a registration statement is not effective for the exercised warrants, the purchaser of a unit containing such warrant will have paid the full purchase price for the unit solely for the Class A ordinary share underlying such unit.

Under the terms of the warrant agreement, the Company has agreed that, as soon as practicable, but in no event later than 20 business days after the closing of its Business Combination, it will use commercially reasonable efforts to file with the SEC a post-effective amendment to the registration statement for the Initial Public Offering or a new registration statement covering the registration under the Securities Act of the Class A ordinary shares issuable upon exercise of the warrants and thereafter will use its commercially reasonable efforts to cause the same to become effective within 60 business days following the Company’s initial business combination and to maintain a current prospectus relating to the Class A ordinary shares issuable upon exercise of the warrants until the expiration of the warrants in accordance with the provisions of the warrant agreement. If a registration statement covering the Class A ordinary shares issuable upon exercise of the warrants is not effective by the sixtieth ( 60 ^th ) business day after the closing of the initial Business Combination, warrant holders may, until such time as there is an effective registration statement and during any period when the Company will have failed to maintain an effective registration statement, exercise warrants on a “cashless basis” in accordance with Section 3(a)(9) of the Securities Act or another exemption. Notwithstanding the above, if the Class A ordinary shares 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, the Company will not be required to file or maintain in effect a registration statement, and in the event the Company does not so elect, the Company 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.

If the holders exercise their Public Warrants on a cashless basis, they would pay the warrant exercise price by surrendering the warrants for that number of Class A ordinary shares equal to the quotient obtained by dividing (x) the product of the number of Class A ordinary shares underlying the warrants, multiplied by the excess of the “fair market value” of the Class A ordinary shares over the exercise price of the warrants by (y) the fair market value. The “fair market value” is the average reported closing price of the Class A ordinary shares for the 10 trading days ending on the third trading day prior to the date on which the notice of exercise is received by the warrant agent or on which the notice of redemption is sent to the holders of warrants, as applicable.

Redemption of Warrants When the Price per Class A Ordinary Share Equals or Exceeds $ 18.00 : The Company may redeem the outstanding warrants:

NOTE 4. PRIVATE PLACEMENT

Simultaneously with the closing of the Initial Public Offering, the Sponsor and Cantor Fitzgerald & Co. purchased an aggregate of 2,250,000 Private Placement Warrants at a price of $ 2.00 per warrant, or $ 4,500,000 in the aggregate, in a private placement. Of those 2,250,000 Private Placement Warrants, the Sponsor purchased 1,500,000 Private Placement Warrants and Cantor Fitzgerald & Co. purchased 750,000 Private Placement Warrants. Each whole warrant entitles the registered holder to purchase one Class A ordinary share at a price of $ 11.50 per share, subject to adjustment.

The Private Placement Warrants will be identical to the Public Warrants sold in the Initial Public Offering except that, so long as they are held by the Sponsor, Cantor Fitzgerald & Co., or their permitted transferees, the Private Placement Warrants (i) may not (including the Class A ordinary shares issuable upon exercise of these Private Placement Warrants), subject to certain limited exceptions, be transferred, assigned or sold by the holders until 30 days after the completion of the initial Business Combination, (ii) will be entitled to registration rights and (iii) with respect to Private Placement Warrants held by Cantor Fitzgerald & Co. and/or its designees, will not be exercisable more than five years from the commencement of sales in the Initial Public Offering in accordance with Financial Industry Regulatory Authority (“FINRA”) Rule 5110(g)(8).

The Sponsor, officers and directors have entered into a letter agreement with the Company, pursuant to which they have agreed to (i) waive their redemption rights with respect to their founder shares and public shares in connection with the completion of the initial Business Combination; (ii) waive their redemption rights with respect to their founder shares and public shares in connection with a shareholder vote to approve an amendment to the Company’s amended and restated memorandum and articles of association (A) to modify the substance or timing of the Company’s obligation to allow redemption in connection with the initial Business Combination or to redeem 100 % of the public shares if the Company has not consummated an initial Business Combination within the Completion Window or (B) with respect to any other material provisions relating to shareholders’ rights or pre-initial Business Combination activity; (iii) waive their rights to liquidating distributions from the Trust Account with respect to their founder shares if the Company fails to complete the initial Business Combination within the Completion Window, although they will be entitled to liquidating distributions from the Trust Account with respect to any public shares they hold if the Company fails to complete the initial Business Combination within the Completion Window and to liquidating distributions from assets outside the Trust Account; and (iv) vote any founder shares held by them and any public shares purchased during or after the Initial Public Offering (including in open market and privately negotiated transactions, aside from shares they may purchase in compliance with the requirements of Rule 14e-5 under the Exchange Act, which would not be voted in favor of approving the Business Combination) in favor of the initial Business Combination. The Company’s sponsor, officers and directors did not receive any consideration for such waivers.

NOTE 5. RELATED PARTY TRANSACTIONS

Founder Shares

On December 31, 2024, the Sponsor made a capital contribution of $ 25,000 , or approximately $ 0.006 per share, to cover certain of the Company’s expenses, for which the Company issued 4,312,500 founders shares to the Sponsor. Up to 562,500 of the founder shares may be surrendered by the Sponsor for no consideration depending on the extent to which the underwriters’ over-allotment option is exercised. On July 3, 2025, the underwriters exercised their over-allotment option in full as part of the closing of the Initial Public Offering. As such, the 562,500 founder shares are no longer subject to forfeiture.

On July 1, 2025, the Sponsor granted membership interests equivalent to an aggregate of 75,000 founder shares to directors of the Company in exchange for the payment of $ 144.93 by each director and for their services through the Company’s initial Business Combination. The founder shares, represented by such membership interests, will remain with the Sponsor if the holder of such membership interests are no longer serving the Company prior to the initial Business Combination. The membership interest assignment of the founder shares to the holders of such interests are in the scope of FASB ASC Topic 718, “Compensation-Stock Compensation” (“ASC 718”). Under ASC 718, stock-based compensation associated with equity-classified awards is measured at fair value upon the assignment date. The total fair value of the 75,000 founder shares represented by such membership interests assigned to the holders of such interests on July 1, 2025 was $ 193,500 or $ 2.58 per share. The membership interests were assigned subject to a performance condition (i.e., providing services through Business Combination). Stock-based compensation would be recognized at the date a Business Combination is considered probable (i.e., upon consummation of a Business Combination) in an amount equal to the number of membership interests that ultimately vest times the assignment date fair value per share (unless subsequently modified) less the amount initially received for the assignment of the membership interests. As of July 3, 2025, the Company determined that the initial Business Combination is not considered probable and therefore no compensation expense has been recognized.

NOTE 6. COMMITMENTS AND CONTINGENCY

Risks and Uncertainties

The United States and global markets are experiencing volatility and disruption following the geopolitical instability resulting from the ongoing Russia-Ukraine conflict and the Israel-Hamas conflict. In response to the ongoing Russia-Ukraine conflict, the North Atlantic Treaty Organization (“NATO”) deployed additional military forces to eastern Europe, and the United States, the United Kingdom, the European Union and other countries have announced various sanctions and restrictive actions against Russia, Belarus and related individuals and entities, including the removal of certain financial institutions from the Society for Worldwide Interbank Financial Telecommunication payment system. Certain countries, including the United States, have also provided and may continue to provide military aid or other assistance to Ukraine and to Israel, increasing geopolitical tensions among a number of nations. The invasion of Ukraine by Russia and the Israel-Hamas conflict and the resulting measures that have been taken, and could be taken in the future, by NATO, the United States, the United Kingdom, the European Union, Israel and its neighboring states and other countries have created global security concerns that could have a lasting impact on regional and global economies. Although the length and impact of the ongoing conflicts are highly unpredictable, they could lead to market disruptions, including significant volatility in commodity prices, credit and capital markets, as well as supply chain interruptions and increased cyberattacks against U.S. companies. Additionally, any resulting sanctions could adversely affect the global economy and financial markets and lead to instability and lack of liquidity in capital markets.

Any of the above mentioned factors, or any other negative impact on the global economy, capital markets or other geopolitical conditions resulting from the Russian invasion of Ukraine, the Israel-Hamas conflict and subsequent sanctions or related actions, could adversely affect the Company’s search for an initial business combination and any target business with which the Company may ultimately consummate an initial business combination.

Registration Rights

The holders of the founder shares, Private Placement Warrants and the Class A ordinary shares underlying such Private Placement Warrants and Private Placement Warrants and warrants that may be issued upon conversion of the Working Capital Loans will have registration rights to require the Company to register a sale of any of the Company’s securities held by them and any other securities of the Company acquired by them prior to the consummation of the initial Business Combination pursuant to a registration rights agreement to be signed prior to or on the effective date of the Initial Public Offering. The holders of these securities are entitled to make up to three demands, excluding short form demands, that the Company registers such securities. In addition, the holders have certain piggyback registration rights with respect to registration statements filed subsequent to the completion of the initial Business Combination. The Company will bear the expenses incurred in connection with the filing of any such registration statements.

Underwriters’ Agreement

The underwriters had a 45 -day option from the date of the Initial Public Offering to purchase up to an additional 2,250,000 units to cover over-allotments, if any. On July 3, 2025, the underwriters elected to fully exercise their over-allotment option to purchase an additional 2,250,000 Units at a price of $ 10.00 per Unit.

NOTE 7. STOCKHOLDERS’ (DEFICIT) EQUITY

Preference Shares — The Company is authorized to issue a total of 1,000,000 preference shares at par value of $ 0.0001 each. At September 30, 2025 and December 31, 2024, there were no preference shares issued or outstanding.

Class A Ordinary Shares — The Company is authorized to issue a total of 200,000,000 Class A ordinary shares at par value of $ 0.0001 each. At September 30, 2025, there were no shares of Class A ordinary shares issued or outstanding, excluding 17,250,000 shares subject to possible redemption presented in temporary equity. At December 31, 2024, there were no Class A ordinary shares issued or outstanding.

Class B Ordinary Shares — The Company is authorized to issue a total of 20,000,000 Class B ordinary shares at par value of $ 0.0001 each. On December 31, 2024, the Company issued 4,312,500 Class B ordinary shares to the Sponsor for $ 25,000 , or approximately $ 0.006 per share. The founder shares include an aggregate of up to 562,500 shares subject to forfeiture if the over-allotment option is not exercised by the underwriters in full. On July 3, 2025, the underwriters exercised their over-allotment option in full as part of the closing of the Initial Public Offering. As such, the 562,500 founder shares are no longer subject to forfeiture. As of September 30, 2025 and December 31, 2024, there were 4,312,500 Class B ordinary shares issued and outstanding.

The founder shares will automatically convert into Class A ordinary shares concurrently with or immediately following the consummation of the initial Business Combination or earlier at the option of the holder on a one-for-one basis, subject to adjustment for share subdivisions, share capitalizations, reorganizations, recapitalizations and the like, and subject to further adjustment as provided herein. In the case that additional Class A ordinary shares, or any other equity-linked securities, are issued or deemed issued in excess of the amounts sold in this offering and related to or in connection with the closing of the initial business combination, the ratio at which Class B ordinary shares convert into Class A ordinary shares will be adjusted (unless the holders of a majority of the outstanding Class B ordinary shares agree to waive such adjustment with respect to any such issuance or deemed issuance) so that the number of Class A ordinary shares issuable upon conversion of all Class B ordinary shares will equal, in the aggregate, 20 % of the sum of (i) the total number of all Class A ordinary shares outstanding upon the completion of the Initial Public Offering (including any Class A ordinary shares issued pursuant to the underwriters’ over-allotment option and excluding the Class A ordinary shares underlying the private placement warrants issued to the Sponsor), plus (ii) all Class A ordinary shares and equity-linked securities issued or deemed issued, in connection with the closing of the initial Business Combination (excluding any shares or equity-linked securities issued, or to be issued, to any seller in the initial business combination and any private placement-equivalent warrants issued to the Sponsor or any of its affiliates or to the Company’s officers or directors upon conversion of working capital loans) minus (iii) any redemptions of Class A ordinary shares by public shareholders in connection with an initial business combination; provided that such conversion of founder shares will never occur on a less than one-for-one basis.

Holders of record of the Company’s Class A ordinary shares and Class B ordinary shares are entitled to one vote for each share held on all matters to be voted on by shareholders. Unless specified in the amended and restated memorandum and articles of association or as required by the Companies Act or stock exchange rules, an ordinary resolution under Cayman Islands law and the amended and restated memorandum and articles of association, which requires the affirmative vote of a majority of the shareholders who, being entitled to do so, vote in person or, where proxies are allowed, by proxy at a general meeting of the company is generally required to approve any matter voted on by the Company’s shareholders. Approval of certain actions requires a special resolution under Cayman Islands law, which (except as specified below) requires the affirmative vote of at least two-thirds of the shareholders who, being entitled to do so, vote in person or, where proxies are allowed, by proxy at a general meeting, and pursuant to the Company’s amended and restated memorandum and articles of association, such actions include amending the amended and restated memorandum and articles of association and approving a statutory merger or consolidation with another company. There is no cumulative voting with respect to the appointment of directors, meaning, following the Company’s initial business combination, the holders of more than 50 % of the ordinary shares voted for the appointment of directors can elect all of the directors. Prior to the consummation of the initial Business Combination, only holders of the Class B ordinary shares will (i) have the right to vote on the appointment and removal of directors and (ii) be entitled to vote on continuing the Company in a jurisdiction outside the Cayman Islands (including any special resolution required to amend the constitutional documents or to adopt new constitutional documents, in each case, as a result of approving a transfer by way of continuation in a jurisdiction outside the Cayman Islands). Holders of the Class A ordinary shares will not be entitled to vote on these matters during such time. These provisions of the amended and restated memorandum and articles of association may only be amended if approved by a special resolution passed by the affirmative vote of at least 90 % (or, where such amendment is proposed in respect of the consummation of the initial Business Combination, two-thirds) of the shareholders who, being entitled to do so, vote in person or, where proxies are allowed, by proxy at a general meeting of the Company.

NOTE 8. FAIR VALUE MEASUREMENTS

The fair value of the Company’s financial assets and 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. In connection with measuring the fair value of its assets and liabilities, the Company seeks to maximize the use of observable inputs (market data obtained from independent sources) and to minimize the use of unobservable inputs (internal assumptions about how market participants would price assets and liabilities). 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 fair value of the Public Warrants issued in the Initial Public Offering is $ 1,854,375 , or $ 0.43 per Public Warrant. The Public Warrants issued in the Initial Public Offering have been classified within shareholders’ deficit and will not require remeasurement after issuance. The following table presents the quantitative information regarding market assumptions used in the valuation of the Public Warrants issued in the Initial Public Offering:

At September 30, 2025, assets held in the Trust Account were comprised of $ 174,183,318 in money market funds which are invested primarily in U.S. Treasury Securities.

NOTE 9. SEGMENT INFORMATION

ASC Topic 280, “Segment Reporting,” establishes standards for companies to report in their financial statement information about operating segments, products, services, geographic areas, and major customers. Operating segments are defined as components of an enterprise for which separate financial information is available that is regularly evaluated by the Company’s CODM, or group, in deciding how to allocate resources and assess performance.

The Company’s CODM has been identified as the Chief Financial Officer , who reviews the assets, operating results, and financial metrics for the Company as a whole to make decisions about allocating resources. Accordingly, management has determined that the Company only has one reportable segment.

The CODM assesses performance for the single segment and decides how to allocate resources. The measure of segment assets is reported on the unaudited condensed balance sheets as total assets. When evaluating the Company’s performance and making key decisions regarding resource allocation, the CODM reviews several key metrics, which include the following:

General and administrative costs are reviewed and monitored by the CODM to manage and forecast cash to ensure that enough capital is available to complete an Initial Public Offering and eventually a Business Combination within the business combination period. The CODM also reviews general and administrative costs to manage, maintain and enforce all contractual agreements to ensure costs are aligned with all agreements and budget.

General and administrative costs, as reported on the unaudited condensed statements of operations, are the significant segment expenses provided to the CODM on a regular basis.

All other segment items included in net income or loss are reported on the unaudited condensed statements of operations and described within their respective disclosures.

NOTE 10. SUBSEQUENT EVENTS

The Company evaluated subsequent events and transactions that occurred after the unaudited condensed balance sheets date through September 30, 2025, the date that the financial statement was issued. Based upon this review, the Company did not identify any subsequent events that would have required adjustment or disclosure in the financial statement.