Note 1 — Organization and Business Operations

Illumination Acquisition Corp I (the “Company”) is a blank check company incorporated in the Cayman Islands on November 18, 2025. The Company was formed for the purpose of effecting a merger, amalgamation, share exchange, asset acquisition, share purchase, reorganization or other similar business combination with one or more businesses (the “Business Combination”).

As of February 28, 2026, the Company had not commenced any operations. All activity for the period from November 18, 2025 (inception) through February 28, 2026 relates to the Company’s formation and the initial public offering (“Initial Public Offering”), which is described below, and subsequent to the Initial Public Offering, seeking to identify 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 will generate non-operating income in the form of interest income from the proceeds derived from the Initial Public Offering. The Company has selected November 30 as its fiscal year end.

The Company’s sponsor is Illumination Acquisition 1 Sponsor LLC (the “Sponsor”). The registration statement for the Company’s Initial Public Offering was declared effective on February 26, 2026. On March 2, 2026, the Company consummated the Initial Public Offering of 23,000,000 units (the “Units” and, with respect to the ordinary shares included in the Units being offered, the “Public Shares”) which included the full exercise by the underwriters of their over-allotment option in the amount of 3,000,000 Units, at $10.00 per Unit, generating gross proceeds of $230,000,000. Each Unit consists of one Class A ordinary share (the “Public Shares”) and one-third of one redeemable warrant (the “Public Warrants”). Simultaneously with the closing of the Initial Public Offering, the Company consummated the sale of 625,000 private placement units (each, a “Private Placement Unit”), in a private placement to the Sponsor and to BTIG, LLC, the representative of the underwriters in the Initial Public Offering, at a price of $10.00 per Private Placement Unit, generating gross proceeds of $6,250,000. Of those 625,000 Private Placement Units, the Sponsor purchased 395,000 Private Placement Units and BTIG, LLC purchased 230,000 Private Placement Units. Each Private Placement Unit consists of one Class A ordinary share (“Private Placement Share”) and one-third of one warrant (“Private Placement Warrant”). Each whole Public Warrant and Private Placement Warrant (together the “Warrants”) entitles the holder to purchase one Class A ordinary share at a price of $11.50 per share.

Transaction costs for the Initial Public Offering amounted to $13,260,344, consisting of $4,600,000 of cash underwriting fee, $8,050,000 of deferred underwriting fee and $610,344 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 balance in the Trust Account (as defined below) (excluding deferred underwriting commissions 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.

Upon the closing of the Initial Public Offering on March 2, 2026, an amount of $230,000,000 ($10.00 per Unit) from the net proceeds of the sale of the Units, and a portion of the net proceeds from the sale of the Private Placement Units, was held in a trust account (the “Trust Account”) and will initially be invested only 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 Units 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.

The Company will provide the Company’s public shareholders with the opportunity to redeem all or a portion of their Public Shares, regardless of whether they abstain, vote for, or vote against, the initial Business Combination upon completion of the initial Business Combination either (i) in connection with a shareholder meeting called to approve the initial Business Combination or (ii) without a shareholder vote by means of a tender offer. The decision as to whether the Company will seek shareholder approval of a proposed initial Business Combination or conduct a tender offer will be made by the Company, solely in its discretion. The public shareholders will be entitled to redeem their shares at a per-share price, payable in cash, equal to the aggregate amount then on deposit in the Trust Account calculated as of two business days prior to the consummation of the initial Business Combination, including interest earned on the funds held in the Trust Account and not released to pay taxes (less taxes payable), divided by the number of then outstanding Public Shares, subject to the limitations. The amount in the Trust Account is initially anticipated to be $10.00 per Public Share. The Class A ordinary shares subject to redemption were recorded at redemption value and classified as temporary equity upon the completion of the Initial Public Offering, in accordance with Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Topic 480, “Distinguishing Liabilities from Equity.”

The Company will have only the duration of the Completion Window to complete the initial Business Combination, unless the Company’s shareholders otherwise approve an amendment to the Company’s amended and restated memorandum and articles of association to extend the Completion Window. If the Company is unable to complete its initial Business Combination within the Completion Window or any extension of the Completion Window, the Company will as promptly as reasonably possible but not more than ten business days thereafter (and subject to lawfully available funds therefor), 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 released to pay taxes (which interest shall be net of taxes (excluding any Excise Tax, or similar tax, imposed on the Company) and less up to $100,000 of interest to pay dissolution expenses), divided by the number of then outstanding Public Shares, which redemption will constitute full and complete payment for the Public Shares and completely extinguish public shareholders’ rights as shareholders (including the right to receive further liquidation or other distributions, if any), subject to the Company’s obligations under Cayman Islands law to provide for claims of creditors and subject to the other requirements of applicable law.

The Sponsor, officers and directors (“Insiders”) entered into a letter agreement with the Company, pursuant to which they agreed to waive their redemption rights with respect to any shares held by them in connection with the completion of the initial Business Combination. Additionally, the Insiders agreed to waive their rights to liquidating distributions from the Trust Account with respect to the Founder Shares and Private Placement Shares they hold if the Company fails to complete the initial Business Combination within the Completion Window, although they will be entitled to liquidating distributions from assets outside the Trust Account. If the Company does not complete the initial Business Combination within the Completion Window, the Private Placement Units (and the securities comprising such units) will be worthless. Furthermore, the Insiders have agreed not to transfer, assign or sell any of the Founder Shares and any Class A ordinary shares issuable upon conversion thereof until the earlier to occur of (i) one year after the completion of the initial Business Combination or (ii) the date following the completion of the initial Business Combination on which the Company completes a liquidation, merger, share exchange or other similar transaction that results in all of the shareholders having the right to exchange their ordinary shares for cash, securities or other property. Notwithstanding the foregoing, if the closing price of the Class A ordinary shares equals or exceeds $12.00 per share (as adjusted for share sub-divisions, share capitalizations, reorganizations, recapitalizations and the like) for any 20 trading days within any 30-trading day period commencing at least 150 days after the initial Business Combination, the Founder Shares will be released from the lock-up. The Private Placement Units (including the securities comprising such units and the Class A ordinary shares issuable upon exercise of the Private Placement Warrants) will not be transferable until 30 days following the completion of the initial Business Combination. Because each of the officers and directors will own ordinary shares or units directly or indirectly, they may have a conflict of interest in determining whether a particular target business is an appropriate business with which to effectuate the initial Business Combination.

Class A Ordinary Shares [Member]

The Company’s Sponsor has agreed that it will be liable to the Company if and to the extent any claims by a third party for services rendered or products sold to the Company, or a prospective target business with which the Company has entered into a written letter of intent, confidentiality or other similar agreement or Business Combination agreement, 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 share due to reductions in the value of the trust assets, less taxes payable (excluding any Excise Tax, or similar tax, imposed on the Company), provided that such liability will not apply to any claims by a third party or prospective target business who 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 indemnity of the underwriters of the Initial Public Offering against certain liabilities, including liabilities under the Securities Act of 1933, as amended (“Securities Act”). However, the Company has not asked the Sponsor to reserve for such indemnification obligations, nor has the Company independently verified whether the Sponsor has sufficient funds to satisfy its indemnity obligations and the Company believes that the Sponsor’s only assets are securities of the Company. Therefore, the Company cannot assure that the Sponsor would be able to satisfy those obligations.