{"url_path":"/sec/cstaf/8-k/2026-06-29/cover-page","section_key":"cover-page","section_title":"Cover Page","topic":"sec","document":{"doc_type":"8-K","doc_date":"2026-06-29","source_url":"https://www.sec.gov/Archives/edgar/data/1834032/0001213900-26-073127-index.html","accession_number":"0001213900-26-073127","cik":"0001834032","ticker":"CSTAF","issuer_name":"Constellation Acquisition Corp I","edgar_url":"https://www.sec.gov/Archives/edgar/data/1834032/0001213900-26-073127-index.html","primary_entity_key":"0001834032","primary_entity_name":"Constellation Acquisition Corp I"},"word_count":367,"has_tables":true,"body_markdown":"false\n0001834032\n\n0001834032\n\n2026-06-26\n2026-06-26\n\n0001834032\n\nCSTAF:ClassOrdinarySharesParValue0.0001PerShareMember\n\n2026-06-26\n2026-06-26\n\n0001834032\n\nCSTAF:RedeemableWarrantsEachWholeWarrantExercisableForOneClassOrdinaryShareAtExercisePriceOf11.50Member\n\n2026-06-26\n2026-06-26\n\n0001834032\n\nCSTAF:UnitsEachConsistingOfOneClassOrdinaryShareAndOnethirdOfOneRedeemableWarrantMember\n\n2026-06-26\n2026-06-26\n\niso4217:USD\n\nxbrli:shares\n\niso4217:USD\n\nxbrli:shares\n\n \n\n \n\n**UNITED STATES**\n\n**SECURITIES AND EXCHANGE COMMISSION**\n\n**Washington, D.C. 20549**\n\n** **\n\n**FORM 8-K**\n\n** **\n\n**CURRENT REPORT**\n\n**Pursuant to Section 13 OR 15(d) of The Securities\nExchange Act of 1934**\n\n** **\n\nDate of Report (Date of earliest event reported):\n**June 26, 2026**\n\n** **\n\n**CONSTELLATION ACQUISITION CORP I**\n\n(Exact name of registrant as specified in its charter)\n\n \n\n**Cayman Islands**\n \n**001-39945**\n \n**98-1574835**\n\n(State or other jurisdiction of\n\nincorporation)\n \n(Commission File Number)\n \n(IRS Employer\n\nIdentification No.)\n\n \n\n**1290 Avenue of the Americas\n10th Floor\nNew York, NY**\n \n**10104**\n\n(Address of principal executive offices)\n \n(Zip Code)\n\n** **\n\n**(212) 983-1602**\n\nRegistrant’s telephone number, including\narea code\n\n** **\n\n**Not Applicable**\n\n(Former name or former address, if changed since\nlast report)\n\n \n\nCheck the appropriate box below if the Form 8-K filing is intended\nto simultaneously satisfy the filing obligation of the registrant under any of the following provisions:\n\n \n\n☐Written\ncommunications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)\n\n \n\n☐Soliciting\nmaterial pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)\n\n \n\n☐Pre-commencement\ncommunications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))\n\n \n\n☐Pre-commencement\ncommunications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))\n\n \n\nSecurities registered pursuant to\nSection 12(b) of the Act:\n\n \n\n**Title of each class**\n \n**Trading Symbol(s)**\n \n**Name of each exchange on which registered**\n\nClass A ordinary shares, par value $0.0001 per share\n \nCSTAF\n \nOTCID Basic Market\n\nRedeemable warrants, each whole warrant exercisable for one Class A ordinary share at an exercise price of $11.50\n \nCSTWF\n \nOTCID Basic Market\n\nUnits, each consisting of one Class A ordinary share and one-third of one redeemable warrant\n \nCSTUF\n \nOTCID Basic Market\n\n \n\nIndicate by check mark whether the registrant is an emerging growth\ncompany as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange\nAct of 1934 (§240.12b-2 of this chapter).\n\n \n\nEmerging\ngrowth company ☒\n\n \n\nIf\nan emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying\nwith any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐"}