{"schema_version":"secwatch.filing_event.v1","accession":"0001829126-26-002191","form_type":"8-K","ticker":"QUMS","cik":"0002070900","company_name":"Quantumsphere Acquisition Corp","filed_at":"2026-03-11T23:59:59+00:00","discovered_at":"2026-05-14T18:02:37.162569+00:00","generated_at":"2026-05-15T15:15:03.791221+00:00","sec_items":["1.01","9.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.25,"calibrated_materiality_score":0.25,"confidence":"high","headline":"Quantumsphere amends underwriting agreement to cap deferred commission at 4% of trust post-redemptions","bullets":["Deferred commission set at 4.00% of gross proceeds (up to $2,880,000 from Firm Units, up to $432,000 from Option Units).","Commission payable from trust upon business combination, capped at 4.00% of trust balance after redemptions.","Underwriters may waive commission prior to business combination; if no deal, forfeit rights to trust distribution."],"urls":{"canonical":"https://secwatch.observer/filing/0001829126-26-002191","json":"https://secwatch.observer/filing/0001829126-26-002191.json","markdown":"https://secwatch.observer/filing/0001829126-26-002191.md","text":"https://secwatch.observer/filing/0001829126-26-002191.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/2070900/000182912626002191/0001829126-26-002191-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/2070900/000182912626002191/quantumsphereacq_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-15T15:15:03.791221+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[{"claim_id":"1d5d5fe9688aad4c014fa1d764e50b9c61ecc600","claim":"Quantumsphere Acquisition Corp amended Amendment No. 1 to the Underwriting Agreement with Polaris Advisory Partners, LLC (as representative of the several underwriters) and Kingswood Capital Partners LLC (effective 2026-03-03).","evidence_excerpt":"On March 3, 2026, Quantumsphere Acquisition Corporation (the “Company”) entered into Amendment No. 1 to the Underwriting Agreement (the “Amendment”) with Polaris Advisory Partners, LLC, a division of Kingswood Capital Partners LLC, as representative of the several underwriters (the “Representative”), and Kingswood Capital Partners LLC.","evidence_source":"SEC 8-K Item 1.01/1.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/2070900/000182912626002191/0001829126-26-002191-index.htm","confidence":0.9,"family_label":"Material Agreements","details":[{"label":"Action","value":"amendment"},{"label":"Agreement","value":"underwriting"},{"label":"Counterparty","value":"Polaris Advisory Partners, LLC (as representative of the several underwriters) and Kingswood Capital Partners LLC"},{"label":"Effective","value":"2026-03-03"}],"fact_type":"material_agreement"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}