Organization and Business Operations	3 Months Ended
Mar. 31, 2026
Organization and Business Operations [Abstract]
Organization and Business Operations	Note 1 — Organization and Business Operations Twelve Seas Investment Company III (the “Company”) is a special purpose acquisition company incorporated as a Cayman Islands exempted company on August 14, 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”). The Company has not selected any specific Business Combination target and the Company has not, nor has anyone on its behalf, engaged in any substantive discussions, directly or indirectly, with any Business Combination target with respect to an initial Business Combination with the Company. As of March 31, 2026, the Company had not commenced any operations. All activity for the period from August 14, 2024 (inception) through March 31, 2026 relates to the Company’s formation and the Initial Public Offering (as defined below) and subsequent to the Initial Public Offering, identifying a target company for and consummating a Business Combination. The Company will not generate any operating revenue until after the completion of its initial Business Combination, at the earliest. The Company generates non-operating income in the form of interest and dividend income on investments from the proceeds derived from the Initial Public Offering. The Company has selected December 31 as its fiscal year end. The Registration Statement on Form S-1 for the Initial Public Offering, initially filed with the U.S. Securities and Exchange Commission (the “SEC”) on April 7, 2025, as amended (File No. 333-286408) was declared effective on December 11, 2025 (the “IPO Registration Statement”). On December 15, 2025, the Company consummated the initial public offering of 17,250,000 units (the “Public Units”), which included the full exercise by the several underwriters of the Initial Public Offering (the “Underwriters”) of their over-allotment option (the “Over-Allotment Option”) in the amount of 2,250,000 units (the “Option Units”) at $10.00 per Public Unit, generating gross proceeds of $172,500,000 (the “Initial Public Offering”). Each Public Unit consists of one Class A ordinary share, par value $0.0001 per share, of the Company (each, a “Class A Ordinary Share” and with respect to the Class A Ordinary Shares included in the Public Units, the “Public Shares”) and one right to receive one tenth (1/10) of a Class A Ordinary Share upon the consummation of the initial Business Combination (each a “Public Right”). Simultaneously with the closing of the Initial Public Offering, the Company consummated the sale of 495,000 units (the “Private Placement Units” and, together with the Public Units, the “Units”) at a price of $10.00 per Private Placement Unit, in a private placement to (i) the Company’s Sponsor, Twelve Seas Sponsor LLC (the “Sponsor”) and (ii) Cohen & Company Capital Markets, a division of Cohen & Company Securities, LLC, the representative of the Underwriters (“CCM”), generating gross proceeds of $4,950,000 (the “Private Placement”). Of those 495,000 Private Placement Units, the Sponsor purchased 300,000 Private Placement Units and CCM purchased 195,000 Private Placement Units. Each Private Placement Unit consists of one Class A Ordinary Share (each, a “Private Placement Share”) and one right to receive one tenth (1/10) of one Class A Ordinary Share upon the consummation of an initial Business Combination (each, a “Private Placement Right” and together with a Public Right, a “Right”). Transaction costs amounted to $10,928,498, consisting of $3,450,000 of cash underwriting fee, the Deferred Fee (as defined in Note 6) of $6,900,000, and $578,498 of other offering costs. The Company’s management (“Management”) has broad discretion with respect to the specific application of the net proceeds of the Initial Public Offering and the Private Placement, although substantially all of the net proceeds are intended to be generally applied toward consummating a Business Combination (less the Deferred Fee). The 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 Deferred Fee held and taxes payable on the income earned on the Trust Account, if any) 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 December 15, 2025, an amount of $172,500,000 ($10.00 per Unit) from the net proceeds of the Initial Public Offering and Private Placement, was placed in a trust account (the “Trust Account”), with Continental Stock Transfer & Trust Company (“Continental”) acting as trustee. The funds are initially held in cash, including demand deposit accounts at a bank, or 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 Management’s ongoing assessment of all factors related to the potential status under the Investment Company Act), instruct Continental 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 Private Placement Units will not be released from the Trust Account until the earliest of (i) the completion of the initial Business Combination, (ii) the redemption of the Public Shares if the Company is unable to complete the initial Business Combination by December 15, 2027, 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 “Combination Period”), subject to applicable law, or (iii) the redemption of the Public Shares properly submitted in connection with a shareholder vote to amend the Company’s amended and restated memorandum and articles of association (the “Amended and Restated Articles”) to modify (1) 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 Combination Period or (2) any other material provisions relating to the rights of holders of Class A Ordinary Shares 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 holders of the Public Shares (the “Public Shareholders”). The Company will provide the Public Shareholders with the opportunity to redeem all or a portion of their Public Shares upon the completion of the initial Business Combination either (i) in connection with a general 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 Public 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 (less taxes payable, if any, but without deduction for any excise or similar tax that may be due or payable), divided by the number of then outstanding Public Shares, subject to the limitations. The amount in the Trust Account was $10.10 per Public Share as of March 31, 2026. The Public Shares (as defined in Note 2) subject to possible 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 has only the duration of the Combination Period to complete the initial Business Combination. If the Company is unable to complete its initial Business Combination within the Combination Period, the Company will 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 (less taxes payable, if any, and 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 have entered into a letter agreement, dated December 11, 2025 (the “Letter Agreement”) with the Company, pursuant to which they have agreed to (i) waive their redemption rights with respect to their Founder Shares (as defined in Note 5) and Public Shares in connection with (x) the completion of the initial Business Combination or an earlier redemption in connection with the commencement of the procedures to consummate the initial Business Combination if the Company determines it is desirable to facilitate the completion of the initial Business Combination and (y) a shareholder vote to approve an amendment to the Amended and Restated Articles to modify (1) 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 Combination Period or (2) any other material provisions relating to shareholders’ rights or pre-initial Business Combination activity; (ii) 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 Combination Period, 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 Combination Period and to liquidating distributions from assets outside the Trust Account; and (iii) 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 Securities Exchange Act of 1934, as amended (the “Exchange Act”), which would not be voted in favor of approving the Business Combination) in favor of the initial Business Combination. The 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 Public Share due to reductions in the value of the Trust Account assets, less taxes payable, if any, 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 Company’s indemnity of the Underwriters against certain liabilities, including liabilities under the Securities Act of 1933, as amended (the “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 provide any assurance that the Sponsor would be able to satisfy those obligations. Liquidity, Capital Resources and Going Concern As of March 31, 2026, the Company had $495,520 cash and working capital surplus of $483,643. In order to fund working capital deficiencies or finance transaction costs in connection with a Business Combination, the Sponsor or an affiliate of the Sponsor, or certain of the Company’s officers and directors may, but are not obligated to, loan the Company funds as may be required (“Working Capital Loans”). If the Company completes a Business Combination, the Company would repay such loaned amounts at that time. Up to $1,500,000 of such Working Capital Loans may be convertible into Private Placement Units of the post Business Combination entity at a price of $10.00 per unit at the option of the lender. As of March 31, 2026, the Company had no borrowings under the Working Capital Loans (see Note 5). In connection with the Company’s assessment of going concern considerations in accordance with Accounting Standards Codification (“ASC”) 204-50, “Presentation of Financial Statements - Going Concern,” the Company’s management has since reevaluated the Company’s liquidity and financial condition, and determined that the Company still lacks the liquidity to sustain operations for a reasonable period of time, which is considered to be one year from the date of the issuance of the financial statements. These conditions raise substantial doubt about the Company’s ability to continue as a going concern. Management plans to address this uncertainty with the Business Combination and with additional financing. There is no assurance that additional financing or the Company’s plans to complete the Business Combination will be successful. The unaudited condensed financial statements do not include any adjustments that might result from the outcome of this uncertainty.

Organization and Business Operations

3 Months Ended

Mar. 31, 2026

Organization and Business Operations [Abstract]

Note 1 — Organization and Business Operations

Twelve Seas Investment Company III (the “Company”) is a special purpose acquisition company incorporated as a Cayman Islands exempted company on August 14, 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”). The Company has not selected any specific Business Combination target and the Company has not, nor has anyone on its behalf, engaged in any substantive discussions, directly or indirectly, with any Business Combination target with respect to an initial Business Combination with the Company.

As of March 31, 2026, the Company had not commenced any operations. All activity for the period from August 14, 2024 (inception) through March 31, 2026 relates to the Company’s formation and the Initial Public Offering (as defined below) and subsequent to the Initial Public Offering, identifying a target company for and consummating a Business Combination. The Company will not generate any operating revenue until after the completion of its initial Business Combination, at the earliest. The Company generates non-operating income in the form of interest and dividend income on investments from the proceeds derived from the Initial Public Offering. The Company has selected December 31 as its fiscal year end.

The Registration Statement on Form S-1 for the Initial Public Offering, initially filed with the U.S. Securities and Exchange Commission (the “SEC”) on April 7, 2025, as amended (File No. 333-286408) was declared effective on December 11, 2025 (the “IPO Registration Statement”). On December 15, 2025, the Company consummated the initial public offering of 17,250,000 units (the “Public Units”), which included the full exercise by the several underwriters of the Initial Public Offering (the “Underwriters”) of their over-allotment option (the “Over-Allotment Option”) in the amount of 2,250,000 units (the “Option Units”) at $10.00 per Public Unit, generating gross proceeds of $172,500,000 (the “Initial Public Offering”). Each Public Unit consists of one Class A ordinary share, par value $0.0001 per share, of the Company (each, a “Class A Ordinary Share” and with respect to the Class A Ordinary Shares included in the Public Units, the “Public Shares”) and one right to receive one tenth (1/10) of a Class A Ordinary Share upon the consummation of the initial Business Combination (each a “Public Right”).

Simultaneously with the closing of the Initial Public Offering, the Company consummated the sale of 495,000 units (the “Private Placement Units” and, together with the Public Units, the “Units”) at a price of $10.00 per Private Placement Unit, in a private placement to (i) the Company’s Sponsor, Twelve Seas Sponsor LLC (the “Sponsor”) and (ii) Cohen & Company Capital Markets, a division of Cohen & Company Securities, LLC, the representative of the Underwriters (“CCM”), generating gross proceeds of $4,950,000 (the “Private Placement”). Of those 495,000 Private Placement Units, the Sponsor purchased 300,000 Private Placement Units and CCM purchased 195,000 Private Placement Units. Each Private Placement Unit consists of one Class A Ordinary Share (each, a “Private Placement Share”) and one right to receive one tenth (1/10) of one Class A Ordinary Share upon the consummation of an initial Business Combination (each, a “Private Placement Right” and together with a Public Right, a “Right”).

Transaction costs amounted to $10,928,498, consisting of $3,450,000 of cash underwriting fee, the Deferred Fee (as defined in Note 6) of $6,900,000, and $578,498 of other offering costs.

The Company’s management (“Management”) has broad discretion with respect to the specific application of the net proceeds of the Initial Public Offering and the Private Placement, although substantially all of the net proceeds are intended to be generally applied toward consummating a Business Combination (less the Deferred Fee).

The 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 Deferred Fee held and taxes payable on the income earned on the Trust Account, if any) 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 December 15, 2025, an amount of $172,500,000 ($10.00 per Unit) from the net proceeds of the Initial Public Offering and Private Placement, was placed in a trust account (the “Trust Account”), with Continental Stock Transfer & Trust Company (“Continental”) acting as trustee. The funds are initially held in cash, including demand deposit accounts at a bank, or 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 Management’s ongoing assessment of all factors related to the potential status under the Investment Company Act), instruct Continental 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 Private Placement Units will not be released from the Trust Account until the earliest of (i) the completion of the initial Business Combination, (ii) the redemption of the Public Shares if the Company is unable to complete the initial Business Combination by December 15, 2027, 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 “Combination Period”), subject to applicable law, or (iii) the redemption of the Public Shares properly submitted in connection with a shareholder vote to amend the Company’s amended and restated memorandum and articles of association (the “Amended and Restated Articles”) to modify (1) 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 Combination Period or (2) any other material provisions relating to the rights of holders of Class A Ordinary Shares 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 holders of the Public Shares (the “Public Shareholders”).

The Company will provide the Public Shareholders with the opportunity to redeem all or a portion of their Public Shares upon the completion of the initial Business Combination either (i) in connection with a general 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 Public 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 (less taxes payable, if any, but without deduction for any excise or similar tax that may be due or payable), divided by the number of then outstanding Public Shares, subject to the limitations.

The amount in the Trust Account was $10.10 per Public Share as of March 31, 2026. The Public Shares (as defined in Note 2) subject to possible 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 has only the duration of the Combination Period to complete the initial Business Combination. If the Company is unable to complete its initial Business Combination within the Combination Period, the Company will 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 (less taxes payable, if any, and 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 have entered into a letter agreement, dated December 11, 2025 (the “Letter Agreement”) with the Company, pursuant to which they have agreed to (i) waive their redemption rights with respect to their Founder Shares (as defined in Note 5) and Public Shares in connection with (x) the completion of the initial Business Combination or an earlier redemption in connection with the commencement of the procedures to consummate the initial Business Combination if the Company determines it is desirable to facilitate the completion of the initial Business Combination and (y) a shareholder vote to approve an amendment to the Amended and Restated Articles to modify (1) 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 Combination Period or (2) any other material provisions relating to shareholders’ rights or pre-initial Business Combination activity; (ii) 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 Combination Period, 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 Combination Period and to liquidating distributions from assets outside the Trust Account; and (iii) 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 Securities Exchange Act of 1934, as amended (the “Exchange Act”), which would not be voted in favor of approving the Business Combination) in favor of the initial Business Combination.

The 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 Public Share due to reductions in the value of the Trust Account assets, less taxes payable, if any, 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 Company’s indemnity of the Underwriters against certain liabilities, including liabilities under the Securities Act of 1933, as amended (the “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 provide any assurance that the Sponsor would be able to satisfy those obligations.

Liquidity, Capital Resources and Going Concern

As of March 31, 2026, the Company had $495,520 cash and working capital surplus of $483,643.

In order to fund working capital deficiencies or finance transaction costs in connection with a Business Combination, the Sponsor or an affiliate of the Sponsor, or certain of the Company’s officers and directors may, but are not obligated to, loan the Company funds as may be required (“Working Capital Loans”). If the Company completes a Business Combination, the Company would repay such loaned amounts at that time. Up to $1,500,000 of such Working Capital Loans may be convertible into Private Placement Units of the post Business Combination entity at a price of $10.00 per unit at the option of the lender. As of March 31, 2026, the Company had no borrowings under the Working Capital Loans (see Note 5).

In connection with the Company’s assessment of going concern considerations in accordance with Accounting Standards Codification (“ASC”) 204-50, “Presentation of Financial Statements - Going Concern,” the Company’s management has since reevaluated the Company’s liquidity and financial condition, and determined that the Company still lacks the liquidity to sustain operations for a reasonable period of time, which is considered to be one year from the date of the issuance of the financial statements. These conditions raise substantial doubt about the Company’s ability to continue as a going concern. Management plans to address this uncertainty with the Business Combination and with additional financing. There is no assurance that additional financing or the Company’s plans to complete the Business Combination will be successful. The unaudited condensed financial statements do not include any adjustments that might result from the outcome of this uncertainty.