{"filing":{"accession_number":"0001829126-26-009623","cik":"0002070900","ticker":"QUMSR","company_name":"Quantumsphere Acquisition Corp","form":"8-K","filing_date":"2026-09-01","report_date":"2026-09-01","primary_document":"quantumsphereacq_8k.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/2070900/000182912626009623/quantumsphereacq_8k.htm"},"events":[{"id":31116,"run_id":28540,"accession_number":"0001829126-26-009623","anchor_item_number":"1.02","event_type":"ma_activity","event_domain":"operational","is_material":true,"confidence":0.95,"summary":"The filing discloses termination of a material merger agreement dated October 3, 2025, between Quantumsphere Acquisition Corp and SACH Pte. Ltd. The Purchaser Parties delivered termination notice on September 1, 2026, pursuant to Section 13.2(a) of the Merger Agreement, following a thirty-day cure period that expired without resolution. This is a material M\u0026A event—the termination of a previously announced merger—that materially affects the registrant's strategic position and investor expectations, particularly for a SPAC whose primary purpose is to effect a business combination.","company_name":"Quantumsphere Acquisition Corp","ticker":"QUMSR","filing_date":"2026-09-01","form":"8-K","submitted_at":null,"items":[{"id":33918,"accession_number":"0001829126-26-009623","item_number":"1.02","item_title":null,"event_type":"ma_activity","event_domain":"operational","is_material":true,"confidence":0.95,"reasoning":"The filing discloses termination of a material merger agreement dated October 3, 2025, between Quantumsphere Acquisition Corp and SACH Pte. Ltd. The Purchaser Parties delivered termination notice on September 1, 2026, pursuant to Section 13.2(a) of the Merger Agreement, following a thirty-day cure period that expired without resolution. This is a material M\u0026A event—the termination of a previously announced merger—that materially affects the registrant's strategic position and investor expectations, particularly for a SPAC whose primary purpose is to effect a business combination.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-09-02T10:07:42.567941+00:00","company_name":"","ticker":null,"filing_date":""}]}],"classifications":[{"id":33918,"accession_number":"0001829126-26-009623","item_number":"1.02","item_title":null,"event_type":"ma_activity","event_domain":"operational","is_material":true,"confidence":0.95,"reasoning":"The filing discloses termination of a material merger agreement dated October 3, 2025, between Quantumsphere Acquisition Corp and SACH Pte. Ltd. The Purchaser Parties delivered termination notice on September 1, 2026, pursuant to Section 13.2(a) of the Merger Agreement, following a thirty-day cure period that expired without resolution. This is a material M\u0026A event—the termination of a previously announced merger—that materially affects the registrant's strategic position and investor expectations, particularly for a SPAC whose primary purpose is to effect a business combination.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-09-02T10:07:42.567941+00:00","company_name":"Quantumsphere Acquisition Corp","ticker":"QUMSR","filing_date":"2026-09-01"}]}