{"url_path":"/sec/cstaf/8-k/2026-07-15/cover-page","section_key":"cover-page","section_title":"Cover Page","topic":"sec","document":{"doc_type":"8-K","doc_date":"2026-07-15","source_url":"https://www.sec.gov/Archives/edgar/data/1834032/0001213900-26-078341-index.html","accession_number":"0001213900-26-078341","cik":"0001834032","ticker":"CSTAF","issuer_name":"Constellation Acquisition Corp I","edgar_url":"https://www.sec.gov/Archives/edgar/data/1834032/0001213900-26-078341-index.html","primary_entity_key":"0001834032","primary_entity_name":"Constellation Acquisition Corp I"},"word_count":371,"has_tables":true,"body_markdown":"false\n0001834032\n\n0001834032\n\n2026-07-15\n2026-07-15\n\n0001834032\n\nCSTAF:ClassOrdinarySharesParValue0.0001PerShareMember\n\n2026-07-15\n2026-07-15\n\n0001834032\n\nCSTAF:RedeemableWarrantsEachWholeWarrantExercisableForOneClassOrdinaryShareAtExercisePriceOf11.50Member\n\n2026-07-15\n2026-07-15\n\n0001834032\n\nCSTAF:UnitsEachConsistingOfOneClassOrdinaryShareAndOnethirdOfOneRedeemableWarrantMember\n\n2026-07-15\n2026-07-15\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\nCOMMISSION**\n\n**Washington, D.C. 20549**\n\n** **\n\n**FORM 8-K**\n\n** **\n\n**CURRENT REPORT**\n\n**Pursuant to Section\n13 OR 15(d) of The Securities Exchange Act of 1934**\n\n** **\n\nDate of Report (Date of\nearliest event reported): **July 15, 2026**\n\n** **\n\n**CONSTELLATION ACQUISITION\nCORP I**\n\n(Exact name of registrant\nas specified in its charter)\n\n \n\n**Cayman Islands**\n \n**001-39945**\n \n**98-1574835**\n\n(State or other jurisdiction\n\nof incorporation)\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\nnumber, including area code\n\n** **\n\n**Not Applicable**\n\n(Former name or former\naddress, if changed since last report)\n\n \n\nCheck the appropriate box below if the Form\n8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:\n\n \n\n☒\nWritten communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)\n\n \n \n\n☐\nSoliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)\n\n \n \n\n☐\nPre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))\n\n \n \n\n☐\nPre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))\n\n \n\nSecurities\nregistered pursuant to Section 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\nwhether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter)\nor Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).\n\n \n\nEmerging growth company\n☒\n\n \n\nIf an emerging growth\ncompany, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or\nrevised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐"}