{"filing":{"accession_number":"0001829126-26-010281","cik":"0002047455","ticker":"QSEAU","company_name":"Quartzsea Acquisition Corp","form":"8-K","filing_date":"2026-09-21","report_date":"2026-09-19","primary_document":"quartzsea_8k.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/2047455/000182912626010281/quartzsea_8k.htm"},"events":[{"id":34024,"run_id":31321,"accession_number":"0001829126-26-010281","anchor_item_number":"8.01","event_type":"other_material","event_domain":"catchall","is_material":true,"confidence":0.65,"summary":"Quartzsea Acquisition Corp disclosed a $175,000 deposit into its trust account to extend the business combination deadline from September 19, 2026 to October 19, 2026, pursuant to shareholder-approved amendments. While this is a material event affecting the registrant's timeline and capital allocation, it does not fit neatly into the specific taxonomy categories: it is neither a completed M\u0026A transaction (ma_activity), a governance vote result (shareholder_vote_results), nor a routine administrative matter. The extension mechanism itself is operational and financial in nature but lacks a dedicated category, warranting classification as other_material.","company_name":"Quartzsea Acquisition Corp","ticker":"QSEAU","filing_date":"2026-09-21","form":"8-K","submitted_at":null,"items":[{"id":37641,"accession_number":"0001829126-26-010281","item_number":"8.01","item_title":"Other Events.","event_type":"other_material","event_domain":"catchall","is_material":true,"confidence":0.65,"reasoning":"Quartzsea Acquisition Corp disclosed a $175,000 deposit into its trust account to extend the business combination deadline from September 19, 2026 to October 19, 2026, pursuant to shareholder-approved amendments. While this is a material event affecting the registrant's timeline and capital allocation, it does not fit neatly into the specific taxonomy categories: it is neither a completed M\u0026A transaction (ma_activity), a governance vote result (shareholder_vote_results), nor a routine administrative matter. The extension mechanism itself is operational and financial in nature but lacks a dedicated category, warranting classification as other_material.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-09-21T20:31:56.320906+00:00","company_name":"","ticker":null,"filing_date":""}]}],"classifications":[{"id":37641,"accession_number":"0001829126-26-010281","item_number":"8.01","item_title":"Other Events.","event_type":"other_material","event_domain":"catchall","is_material":true,"confidence":0.65,"reasoning":"Quartzsea Acquisition Corp disclosed a $175,000 deposit into its trust account to extend the business combination deadline from September 19, 2026 to October 19, 2026, pursuant to shareholder-approved amendments. While this is a material event affecting the registrant's timeline and capital allocation, it does not fit neatly into the specific taxonomy categories: it is neither a completed M\u0026A transaction (ma_activity), a governance vote result (shareholder_vote_results), nor a routine administrative matter. The extension mechanism itself is operational and financial in nature but lacks a dedicated category, warranting classification as other_material.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-09-21T20:31:56.320906+00:00","company_name":"Quartzsea Acquisition Corp","ticker":"QSEAU","filing_date":"2026-09-21"}]}