{"filing": {"accession": "0001213900-26-114455", "cik": "0002147831", "ticker": null, "company_name": "UCSB Acquisition Corp.", "form_type": "S-1", "filing_type": "S-1", "filing_date": "2026-10-30", "accepted_datetime": null, "acceptance_datetime": null, "accepted_at": null, "primary_doc_url": "https://www.sec.gov/Archives/edgar/data/2147831/000121390026114455/0001213900-26-114455-index.htm", "filing_url": "https://www.sec.gov/Archives/edgar/data/2147831/000121390026114455/0001213900-26-114455-index.htm", "period_of_report": null}, "html_url": "/api/filings/000121390026114455/stream", "exhibits": [{"exhibit_number": "1.1", "exhibit_type": "1", "description": "Form of Underwriting Agreement", "filename": "ea030993201ex1-1.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/2147831/000121390026114455/ea030993201ex1-1.htm", "category": "debt", "incorporated_by_reference": false}, {"exhibit_number": "3.1", "exhibit_type": "3", "description": "Memorandum and Articles of Association", "filename": "ea030993201ex3-1.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/2147831/000121390026114455/ea030993201ex3-1.htm", "category": "incorporation", "incorporated_by_reference": false}, {"exhibit_number": "3.2", "exhibit_type": "3", "description": "Form of Amended and Restated Memorandum and Articles of Association", "filename": "ea030993201ex3-2.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/2147831/000121390026114455/ea030993201ex3-2.htm", "category": "incorporation", "incorporated_by_reference": false}, {"exhibit_number": "4.1", "exhibit_type": "4", "description": "Specimen Unit Certificate", "filename": "ea030993201ex4-1.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/2147831/000121390026114455/ea030993201ex4-1.htm", "category": "debt", "incorporated_by_reference": false}, {"exhibit_number": "4.2", "exhibit_type": "4", "description": "Specimen Ordinary Share Certificate", "filename": "ea030993201ex4-2.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/2147831/000121390026114455/ea030993201ex4-2.htm", "category": "debt", "incorporated_by_reference": false}, {"exhibit_number": "4.3", "exhibit_type": "4", "description": "Specimen Rights Certificate", "filename": "ea030993201ex4-3.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/2147831/000121390026114455/ea030993201ex4-3.htm", "category": "debt", "incorporated_by_reference": false}, {"exhibit_number": "4.4", "exhibit_type": "4", "description": "Form of Rights Agreement between Odyssey Transfer and Trust Company and the Registrant", "filename": "ea030993201ex4-4.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/2147831/000121390026114455/ea030993201ex4-4.htm", "category": "debt", "incorporated_by_reference": false}, {"exhibit_number": "5.1", "exhibit_type": "5", "description": "Opinion of Ogier", "filename": "ea030993201ex5-1.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/2147831/000121390026114455/ea030993201ex5-1.htm", "category": "other", "incorporated_by_reference": false}, {"exhibit_number": "5.2", "exhibit_type": "5", "description": "Opinion of Robinson & Cole LLP", "filename": "ea030993201ex5-2.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/2147831/000121390026114455/ea030993201ex5-2.htm", "category": "other", "incorporated_by_reference": false}, {"exhibit_number": "10.1", "exhibit_type": "10", "description": "Form of Letter Agreement among the Registrant, Underwriters and the Company\u2019s officers, directors and shareholders", "filename": "ea030993201ex10-1.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/2147831/000121390026114455/ea030993201ex10-1.htm", "category": "contracts", "incorporated_by_reference": false}, {"exhibit_number": "10.2", "exhibit_type": "10", "description": "Form of Investment Management Trust Agreement between Odyssey Transfer and Trust Company and the Registrant", "filename": "ea030993201ex10-2.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/2147831/000121390026114455/ea030993201ex10-2.htm", "category": "contracts", "incorporated_by_reference": false}, {"exhibit_number": "10.3", "exhibit_type": "10", "description": "Form of Registration Rights Agreement among the Registrant and the Founders", "filename": "ea030993201ex10-3.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/2147831/000121390026114455/ea030993201ex10-3.htm", "category": "debt", "incorporated_by_reference": false}, {"exhibit_number": "10.4", "exhibit_type": "10", "description": "Promissory Note, issued to the Founders, dated as of July 9, 2026", "filename": "ea030993201ex10-4.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/2147831/000121390026114455/ea030993201ex10-4.htm", "category": "contracts", "incorporated_by_reference": false}, {"exhibit_number": "10.5", "exhibit_type": "10", "description": "Securities Purchase Agreement by and among the Registrant and the sponsor, dated as of July 9, 2026", "filename": "ea030993201ex10-5.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/2147831/000121390026114455/ea030993201ex10-5.htm", "category": "contracts", "incorporated_by_reference": false}, {"exhibit_number": "10.6", "exhibit_type": "10", "description": "Notice of Surrender of Shares by the Sponsor, dated October 28, 2026", "filename": "ea030993201ex10-6.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/2147831/000121390026114455/ea030993201ex10-6.htm", "category": "contracts", "incorporated_by_reference": false}, {"exhibit_number": "10.7", "exhibit_type": "10", "description": "Form of Securities Transfer Agreement, among the Registrant, the sponsor and the directors", "filename": "ea030993201ex10-7.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/2147831/000121390026114455/ea030993201ex10-7.htm", "category": "contracts", "incorporated_by_reference": false}, {"exhibit_number": "10.8", "exhibit_type": "10", "description": "Form of Securities Transfer Agreement, among the Registrant, the sponsor and the CEO", "filename": "ea030993201ex10-8.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/2147831/000121390026114455/ea030993201ex10-8.htm", "category": "contracts", "incorporated_by_reference": false}, {"exhibit_number": "10.9", "exhibit_type": "10", "description": "Form of Securities Transfer Agreement, among the Registrant, the sponsor and the CFO", "filename": "ea030993201ex10-9.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/2147831/000121390026114455/ea030993201ex10-9.htm", "category": "contracts", "incorporated_by_reference": false}, {"exhibit_number": "10.10", "exhibit_type": "10", "description": "Form of Private Units Subscription Agreement between the Registrant and the sponsor", "filename": "ea030993201ex10-10.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/2147831/000121390026114455/ea030993201ex10-10.htm", "category": "contracts", "incorporated_by_reference": false}, {"exhibit_number": "10.11", "exhibit_type": "10", "description": "Form of Indemnity Agreement", "filename": "ea030993201ex10-11.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/2147831/000121390026114455/ea030993201ex10-11.htm", "category": "contracts", "incorporated_by_reference": false}, {"exhibit_number": "14", "exhibit_type": "14", "description": "Form of Code of Ethics", "filename": "ea030993201ex14.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/2147831/000121390026114455/ea030993201ex14.htm", "category": "other", "incorporated_by_reference": false}, {"exhibit_number": "19", "exhibit_type": "19", "description": "Insider Trading Policy", "filename": "ea030993201ex19.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/2147831/000121390026114455/ea030993201ex19.htm", "category": "other", "incorporated_by_reference": false}, {"exhibit_number": "23.1", "exhibit_type": "23", "description": "Consent of WWC, P.C.", "filename": "ea030993201ex23-1.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/2147831/000121390026114455/ea030993201ex23-1.htm", "category": "other", "incorporated_by_reference": false}, {"exhibit_number": "23.2", "exhibit_type": "23", "description": "Consent of Ogier (included in Exhibit 5.1)", "filename": "ea030993201ex5-1.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/2147831/000121390026114455/ea030993201ex5-1.htm", "category": "other", "incorporated_by_reference": false}, {"exhibit_number": "23.3", "exhibit_type": "23", "description": "Consent of Robinson & Cole LLP (included in Exhibit 5.2)", "filename": "ea030993201ex5-2.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/2147831/000121390026114455/ea030993201ex5-2.htm", "category": "other", "incorporated_by_reference": false}, {"exhibit_number": "99.1", "exhibit_type": "99", "description": "Form of Audit Committee Charter", "filename": "ea030993201ex99-1.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/2147831/000121390026114455/ea030993201ex99-1.htm", "category": "incorporation", "incorporated_by_reference": false}, {"exhibit_number": "99.2", "exhibit_type": "99", "description": "Form of Compensation Committee Charter", "filename": "ea030993201ex99-2.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/2147831/000121390026114455/ea030993201ex99-2.htm", "category": "incorporation", "incorporated_by_reference": false}, {"exhibit_number": "99.3", "exhibit_type": "99", "description": "Form of Nominating Committee Charter", "filename": "ea030993201ex99-3.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/2147831/000121390026114455/ea030993201ex99-3.htm", "category": "incorporation", "incorporated_by_reference": false}, {"exhibit_number": "99.4", "exhibit_type": "99", "description": "Form of Clawback Policy", "filename": "ea030993201ex99-4.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/2147831/000121390026114455/ea030993201ex99-4.htm", "category": "other", "incorporated_by_reference": false}, {"exhibit_number": "99.5", "exhibit_type": "99", "description": "Consent of Sze Ho Freddy Yeung", "filename": "ea030993201ex99-5.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/2147831/000121390026114455/ea030993201ex99-5.htm", "category": "other", "incorporated_by_reference": false}, {"exhibit_number": "99.6", "exhibit_type": "99", "description": "Consent of Amy DeBuysere", "filename": "ea030993201ex99-6.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/2147831/000121390026114455/ea030993201ex99-6.htm", "category": "other", "incorporated_by_reference": false}, {"exhibit_number": "99.7", "exhibit_type": "99", "description": "Consent of Tracy Chui-Kam Ng", "filename": "ea030993201ex99-7.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/2147831/000121390026114455/ea030993201ex99-7.htm", "category": "other", "incorporated_by_reference": false}], "sections": [], "tables": [{"table_index": 1, "table_type": "text", "caption": null, "header_text": "British Virgin Islands6770Not Applicable"}, {"table_index": 3, "table_type": "text", "caption": null, "header_text": "Large\n accelerated filer\u2610Accelerated\n filer\u2610"}, {"table_index": 6, "table_type": "financial", "caption": null, "header_text": "(1)The numbers set forth in this column assume that 1,396,757 public shares, or 25%, of 5,587,029\n public shares are redeemed."}, {"table_index": 8, "table_type": "financial", "caption": null, "header_text": "(5)The numbers set forth in this column assume that 1,625,427 public shares, or 25%, of 6,501,708\n public shares are redeemed."}, {"table_index": 9, "table_type": "financial", "caption": null, "header_text": "Price toPublicUnderwritingDiscounts(1)Proceeds,beforeExpenses,to us"}, {"table_index": 11, "table_type": "text", "caption": null, "header_text": "Page"}, {"table_index": 13, "table_type": "text", "caption": null, "header_text": "\u25cf\u201camended\n and restated memorandum and articles of association\u201d are to our Amended and Restated Memorandum and Articles of Association\n to be adopted immediately prior to or upon effectiveness of this"}, {"table_index": 15, "table_type": "text", "caption": null, "header_text": "\u25cf\u201cinsiders\u201d\n refers to our founders and any officer or director appointed after the closing of the offering and prior to the closing of a\n business combination to the extent that they do not hold any "}, {"table_index": 16, "table_type": "text", "caption": null, "header_text": "\u25cf\u201cletter\n agreements\u201d refer to the agreements to be executed among us, underwriters, our officers, directors and other founders on the\n date that the registration statement is declared effective;"}, {"table_index": 19, "table_type": "text", "caption": null, "header_text": "\u25cf\u201cUS\n Dollars\u201d and \u201c$\u201d refer to the legal currency of the United States;"}, {"table_index": 20, "table_type": "financial", "caption": null, "header_text": "Entity/IndividualAmount of Compensation to beReceived or Securities Issued or to beIssuedConsideration Paid or to be Paid"}, {"table_index": 21, "table_type": "text", "caption": null, "header_text": "(1)Assumes no exercise of the over-allotment option and the full forfeiture of 225,000 ordinary shares that are subject to forfeiture by our sponsor depending on the extent to which the underwriters\u2019 "}, {"table_index": 22, "table_type": "text", "caption": null, "header_text": "SharesTotal ConsiderationAveragePrice per"}, {"table_index": 26, "table_type": "text", "caption": null, "header_text": "SharesTotal ConsiderationAveragePrice per"}, {"table_index": 30, "table_type": "text", "caption": null, "header_text": "Types\n of SecuritiesNumber\n ofSecuritiesHeldBeforeOfferingNumber\n ofSecuritiesHeld AfterOffering(assuming noover-allotmentoptionexercised)Number\n ofSecuritiesAfter Offering(assumingover-allotmentoptio"}, {"table_index": 32, "table_type": "financial", "caption": null, "header_text": "(1)The numbers set forth in this\n column assume that 1,396,757 public shares, or 25%, of 5,587,029 public shares are redeemed."}, {"table_index": 34, "table_type": "financial", "caption": null, "header_text": "(5)The numbers set forth in this\n column assume that 1,625,427 public shares, or 25%, of 6,501,708 public shares are redeemed."}, {"table_index": 35, "table_type": "text", "caption": null, "header_text": "Securities offered6,000,000\n units, at $10.00 per unit, each unit consisting of one ordinary share and one right. Each\n right entitles the holder thereof to receive one-fourth (1/4) of one ordinary sh"}, {"table_index": 36, "table_type": "text", "caption": null, "header_text": "Number outstanding before this offering and the private placement0 units"}, {"table_index": 37, "table_type": "text", "caption": null, "header_text": "(1)Assumes no exercise\n of the underwriters\u2019 over-allotment option. Our sponsor has agreed to purchase an aggregate\n of 186,275 private units (or 198,650 private units if the over-allotment option\n is"}, {"table_index": 39, "table_type": "text", "caption": null, "header_text": "\u25cfthe founder shares are subject to certain transfer\n restrictions, as described in more detail below;"}, {"table_index": 40, "table_type": "text", "caption": null, "header_text": "Private units and underlying securitiesOur sponsor has committed, pursuant\n to a written agreement, to purchase an aggregate of 186,275 private units (or up to 198,650\n private units if the underwrite"}, {"table_index": 48, "table_type": "text", "caption": null, "header_text": "\u25cfour registration statement/proxy statement filed\n for our business combination transaction would disclose the possibility that our sponsor, directors, officers, advisors and their\n affiliates may pur"}, {"table_index": 49, "table_type": "text", "caption": null, "header_text": "-the amount of our securities purchased outside\n of the redemption offer by our sponsor, directors, officers, advisors and their affiliates, along with the purchase price;"}, {"table_index": 51, "table_type": "financial", "caption": null, "header_text": "Redemption rights for public shareholders upon completion of our initial business combinationWe will provide our public shareholders with the opportunity to redeem all or a portion of their public sha"}, {"table_index": 52, "table_type": "exhibit_index", "caption": null, "header_text": "\u25cfconduct the redemptions pursuant to Rule 13e-4 and Regulation 14E of the Exchange Act, which regulate issuer tender offers; and"}, {"table_index": 54, "table_type": "financial", "caption": null, "header_text": "In the event we conduct redemptions pursuant to the tender offer rules, our offer to redeem will remain open for at least 20 business days, in accordance with Rule 14e-1(a) under the Exchange Act, and"}, {"table_index": 55, "table_type": "financial", "caption": null, "header_text": "We have determined not to consummate any business combination unless we have net tangible assets of at least $5,000,001 immediately prior to or upon consummation of the business combination in order t"}, {"table_index": 56, "table_type": "financial", "caption": null, "header_text": "Redemption Rights in connection with proposed amendments to our amended and restated\n memorandum and articles of associationOur amended and restated memorandum and articles\nof association provides tha"}, {"table_index": 58, "table_type": "financial", "caption": null, "header_text": "Limited payments to foundersThere will be no finder\u2019s fees, reimbursements or cash payments made to our sponsor,\n officers or directors, or our or their affiliates, for services rendered to us prior t"}, {"table_index": 59, "table_type": "text", "caption": null, "header_text": "Audit CommitteeWe will establish and maintain an audit committee. Among its responsibilities, the audit committee\n will monitor compliance with the terms described above and the other terms relating t"}, {"table_index": 60, "table_type": "financial", "caption": null, "header_text": "Each of founders presently has, and any of them in the future may have\n additional, fiduciary or contractual obligations to other entities pursuant to which such officer or director is or will be requ"}, {"table_index": 61, "table_type": "text", "caption": null, "header_text": "\u25cfCertain\n of our officers and directors are located in or have significant ties to China, which may make it more difficult for us to consummate\n an initial business combination. See page 43 for additi"}, {"table_index": 62, "table_type": "text", "caption": null, "header_text": "\u25cfThe\n ability of our public shareholders to exercise redemption rights with respect to a large number of our shares could increase the\n probability that our initial business combination would be unsuc"}, {"table_index": 63, "table_type": "text", "caption": null, "header_text": "\u25cfIf\n we effect our initial business combination with a company located outside of the U.S., we would be subject to a variety of additional\n risks that may negatively impact our business operations and"}, {"table_index": 64, "table_type": "text", "caption": null, "header_text": "\u25cfOur\n directors may decide not to enforce the indemnification obligations of our sponsor, resulting in a reduction in the amount of funds\n in the trust account available for distribution to our public"}, {"table_index": 65, "table_type": "text", "caption": null, "header_text": "\u25cfNASDAQ\n may delist our securities from trading on its exchange, which could limit investors\u2019 ability to make transactions in our securities\n and subject us to additional trading restrictions. See pag"}, {"table_index": 66, "table_type": "text", "caption": null, "header_text": "\u25cfUncertainties\n in the interpretation and enforcement of PRC laws and regulations could limit the legal protections available to investors and our\n company. See page 74 for additional information."}, {"table_index": 67, "table_type": "financial", "caption": null, "header_text": "\u25cfThe\n M&A Rules and certain other PRC regulations establish complex procedures for certain acquisitions of Chinese companies by foreign\n investors, which could make it more difficult for us to pursue "}, {"table_index": 68, "table_type": "financial", "caption": null, "header_text": "\u25cfWe\n are a newly incorporated company with no operating history and no revenues, and you have no basis on which to evaluate our ability\n to achieve our business objective. See page 88 for additional i"}, {"table_index": 69, "table_type": "text", "caption": null, "header_text": "\u25cfthe\n Company\u2019s registration statement/proxy statement filed for its business combination transaction would disclose the possibility\n that the Company\u2019s sponsor, directors, officers, advisors or their"}, {"table_index": 76, "table_type": "financial", "caption": null, "header_text": "\u25cfdefault\n and foreclosure on our assets if our operating revenues after an initial business combination are insufficient to repay our debt\n obligations;"}, {"table_index": 77, "table_type": "text", "caption": null, "header_text": "\u25cfsolely\n dependent upon the performance of a single business, property or asset; or"}, {"table_index": 78, "table_type": "text", "caption": null, "header_text": "\u25cfrules\n and regulations or currency redemption or corporate withholding taxes on individuals;"}, {"table_index": 79, "table_type": "text", "caption": null, "header_text": "\u25cflevying\n fines;"}, {"table_index": 82, "table_type": "financial", "caption": null, "header_text": "\u25cfthe U.S. court issuing the judgment had jurisdiction in the matter and the\n company either submitted to such jurisdiction or was resident or carrying on business within such jurisdiction and was duly"}, {"table_index": 83, "table_type": "text", "caption": null, "header_text": "\u25cfa\n limited availability of market quotations for our securities;"}, {"table_index": 84, "table_type": "text", "caption": null, "header_text": "\u25cfmay\n significantly dilute the equity interest of investors in this offering;"}, {"table_index": 85, "table_type": "text", "caption": null, "header_text": "\u25cfthe\n history and prospects of companies whose principal business is the acquisition of other companies;"}, {"table_index": 86, "table_type": "text", "caption": null, "header_text": "\u25cfrestrictions\n on the nature of our investments; and"}, {"table_index": 87, "table_type": "text", "caption": null, "header_text": "\u25cfregistration\n as an investment company;"}, {"table_index": 88, "table_type": "financial", "caption": null, "header_text": "July 10, 2026"}, {"table_index": 89, "table_type": "financial", "caption": null, "header_text": "(1)The \u201cas adjusted\u201d calculation includes $500,000 of cash held outside the trust account,\n minus $79,290 over-allotment liability and plus $414 of actual shareholders\u2019 deficit as of July 10, 2026."}, {"table_index": 102, "table_type": "financial", "caption": null, "header_text": "WithoutOver-AllotmentOptionOver-AllotmentOptionExercised"}, {"table_index": 103, "table_type": "financial", "caption": null, "header_text": "Amount% of Total"}, {"table_index": 109, "table_type": "text", "caption": null, "header_text": "WithoutOver-allotmentWithOver-allotment"}, {"table_index": 112, "table_type": "financial", "caption": null, "header_text": "Numerator:"}, {"table_index": 113, "table_type": "text", "caption": null, "header_text": "Denominator:"}, {"table_index": 114, "table_type": "financial", "caption": null, "header_text": "(1)The numbers set forth in this column assume that 1,396,757 public shares, or 25%, of 5,587,029 public shares are redeemed."}, {"table_index": 117, "table_type": "financial", "caption": null, "header_text": "Numerator:"}, {"table_index": 118, "table_type": "text", "caption": null, "header_text": "Denominator:"}, {"table_index": 119, "table_type": "financial", "caption": null, "header_text": "(5)The numbers set forth in this column assume that 1,625,427 public shares, or 25%, of 6,501,708 public shares are redeemed."}, {"table_index": 120, "table_type": "text", "caption": null, "header_text": "SharesTotal ConsiderationAveragePrice per"}, {"table_index": 124, "table_type": "text", "caption": null, "header_text": "July 10, 2026"}, {"table_index": 137, "table_type": "financial", "caption": null, "header_text": "\u25cfour\n inability to obtain additional financing, if necessary, if the debt security contains covenants restricting our ability to obtain\n additional financing while such security is outstanding;"}, {"table_index": 138, "table_type": "financial", "caption": null, "header_text": "\u25cf$180,000\n of expenses for legal, accounting, due diligence, travel and other expenses in connection\n with any business combination;"}, {"table_index": 145, "table_type": "financial", "caption": null, "header_text": "Entity/IndividualAmount of Compensation to\n beReceived or Securities Issued or to beIssuedConsideration Paid or to\n be Paid"}, {"table_index": 146, "table_type": "text", "caption": null, "header_text": "(1)Assumes\n no exercise of the over-allotment option and the full forfeiture of 225,000 ordinary shares\n that are subject to forfeiture by our sponsor depending on the extent to which the underwriters"}, {"table_index": 147, "table_type": "text", "caption": null, "header_text": "SharesTotal ConsiderationAveragePrice per"}, {"table_index": 151, "table_type": "text", "caption": null, "header_text": "SharesTotal ConsiderationAverage Price per"}, {"table_index": 155, "table_type": "text", "caption": null, "header_text": "Types of SecuritiesNumber ofSecuritiesHeldBeforeOfferingNumber ofSecuritiesHeld AfterOffering(assuming noover-allotmentoptionexercised)Number ofSecuritiesAfter Offering(assumingover-allotmentoptionexe"}, {"table_index": 158, "table_type": "financial", "caption": null, "header_text": "Terms of the OfferingTerms Under a Rule 419 Offering"}, {"table_index": 162, "table_type": "text", "caption": null, "header_text": "Interest\n earned on the funds in the trust accountThere\n can be released to us, from time to time any interest earned on the funds in the trust account that we may need to pay our tax obligations.\n Th"}, {"table_index": 163, "table_type": "text", "caption": null, "header_text": "NameAgeTitle"}, {"table_index": 164, "table_type": "text", "caption": null, "header_text": "\u25cfthe\n appointment, compensation, retention, replacement, and oversight of the work of the independent auditors and any other independent\n registered public accounting firm engaged by us;"}, {"table_index": 165, "table_type": "text", "caption": null, "header_text": "\u25cfreviewing\n and approving on an annual basis the corporate goals and objectives relevant to our Chief Executive Officer\u2019s compensation,\n evaluating our Chief Executive Officer\u2019s performance in light o"}, {"table_index": 171, "table_type": "financial", "caption": null, "header_text": "\u25cfEach of our officers and directors presently has and all of them in the future may have additional, fiduciary or contractual obligations to other entities, including any other special purpose acquisi"}, {"table_index": 172, "table_type": "text", "caption": null, "header_text": "IndividualEntityEntity\u2019s BusinessAffiliation"}, {"table_index": 179, "table_type": "text", "caption": null, "header_text": "Prior to OfferingAfter Offering (2)"}, {"table_index": 183, "table_type": "exhibit_index", "caption": null, "header_text": "(3)Chun Hin Leslie Chowis\n the sole director ofQUANT CORE HOLDINGS LIMITED, our sponsor.Chun\n Hin Leslie Chowbeneficially owns 100% issued and outstanding shares of the sponsor. In accordance with the"}, {"table_index": 194, "table_type": "text", "caption": null, "header_text": "British\n Virgin IslandsDelaware"}, {"table_index": 195, "table_type": "exhibit_index", "caption": null, "header_text": "British\n Virgin IslandsDelaware"}, {"table_index": 196, "table_type": "text", "caption": null, "header_text": "British\n Virgin IslandsDelaware"}, {"table_index": 197, "table_type": "exhibit_index", "caption": null, "header_text": "British\n Virgin IslandsDelaware"}, {"table_index": 233, "table_type": "text", "caption": null, "header_text": "\u25cffinancial\n institutions or financial services entities;"}, {"table_index": 235, "table_type": "text", "caption": null, "header_text": "\u25cftaxpayers\n that are subject to the mark-to-market accounting rules under Section 475 of the Code;"}, {"table_index": 240, "table_type": "text", "caption": null, "header_text": "\u25cfreal\n estate investment trusts;"}, {"table_index": 260, "table_type": "text", "caption": null, "header_text": "UnderwritersNumber\n of Units"}, {"table_index": 261, "table_type": "text", "caption": null, "header_text": "NoExercise ofOver-AllotmentOptionFullExercise ofOver-AllotmentOption"}, {"table_index": 263, "table_type": "text", "caption": null, "header_text": "\u25cfShort\n sales involve secondary market sales by the underwriters of a greater number of units than it is required to purchase in the offering."}, {"table_index": 264, "table_type": "text", "caption": null, "header_text": "\u25cfCovering\n transactions involve purchases of units either pursuant to the over-allotment option or in the open market after the distribution\n has been completed in order to cover short positions."}, {"table_index": 271, "table_type": "financial", "caption": null, "header_text": "(C)Conflicts\n of Interest:Canadian purchasers are hereby notified that the underwriters are relying on the exemption set out in section 3A.3\n or 3A.4, if applicable, of National Instrument 33-105 \u2014 Un"}, {"table_index": 273, "table_type": "text", "caption": null, "header_text": "(b)to\n fewer than 100 or, if the Relevant Member State has implemented the relevant provision of the 2010 PD Amending Directive, 150, natural\n or legal persons (other than qualified investors as defin"}, {"table_index": 274, "table_type": "text", "caption": null, "header_text": "(a)a\n corporation (which is not an accredited investor (as defined in Section 4A of the SFA)) the sole business of which is to hold investments\n and the entire share capital of which is owned by one o"}, {"table_index": 275, "table_type": "text", "caption": null, "header_text": "(i)to\n an institutional investor or to a relevant person defined in Section 275(2) of the SFA, or to any person arising from an offer referred\n to in Section 275(1A) or Section 276(4)(i)(B) of the SFA"}, {"table_index": 278, "table_type": "text", "caption": null, "header_text": "(i)made\n by soggetti abilitati (including investment firms (imprese di investimento), banks or financial intermediaries, as defined by Article\n 1, first paragraph, letter r), of the Italian Financial "}, {"table_index": 279, "table_type": "financial", "caption": null, "header_text": "Report\n of Independent Registered Public Accounting Firm (PCAOB ID:1171)F-2"}, {"table_index": 280, "table_type": "financial", "caption": null, "header_text": "As ofJuly 10,2026"}, {"table_index": 281, "table_type": "text", "caption": null, "header_text": "(1)The number of outstanding ordinary shares includes an aggregate of up to 225,000\n ordinary shares subject to forfeiture if the over-allotment option is not exercised in full or in part by the under"}, {"table_index": 282, "table_type": "financial", "caption": null, "header_text": "For theperiod fromJune 11,2026(Inception)throughJuly 10,2026"}, {"table_index": 283, "table_type": "text", "caption": null, "header_text": "(1)This number excludes an aggregate of up to 225,000 ordinary shares subject to forfeiture\n if the over-allotment option is not exercised in full or in part by the underwriter (see Note 7)."}, {"table_index": 284, "table_type": "text", "caption": null, "header_text": "Total"}, {"table_index": 285, "table_type": "text", "caption": null, "header_text": "(1)The number of outstanding ordinary shares includes an aggregate of up to 225,000\n ordinary shares subject to forfeiture if the over-allotment option is not exercised in full or in part by the under"}, {"table_index": 286, "table_type": "financial", "caption": null, "header_text": "For theperiod fromJune\n 11,2026(Inception)throughJuly 10,2026"}, {"table_index": 292, "table_type": "financial", "caption": null, "header_text": "For theperiod fromJune\n 11,2026(Inception)throughJuly 10,2026"}, {"table_index": 293, "table_type": "financial", "caption": null, "header_text": "Reimbursement for underwriter expenses$120,000.00"}, {"table_index": 294, "table_type": "text", "caption": null, "header_text": "\u25cfOn June 11, 2026, we issued one (1) ordinary share, no par value, to QUANT CORE\n HOLDINGS LIMITED, our sponsor."}, {"table_index": 296, "table_type": "exhibit_index", "caption": null, "header_text": "Exhibit No.Description"}, {"table_index": 316, "table_type": "text", "caption": null, "header_text": "UCSB\n ACQUISITION CORP."}, {"table_index": 317, "table_type": "text", "caption": null, "header_text": "NamePositionDate"}, {"table_index": 318, "table_type": "text", "caption": null, "header_text": "AUTHORIZED\n U.S. REPRESENTATIVE"}], "exhibits_pending": false, "cdn_exhibit": null, "cdn_html": true, "response_time_ms": 147}