{"filing":{"accession_number":"0001140361-26-033135","cik":"0001781162","ticker":"MNTSW","company_name":"Momentus Inc.","form":"8-K","filing_date":"2026-08-14","report_date":"2026-08-11","primary_document":"ny20080239x1_8k.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/1781162/000114036126033135/ny20080239x1_8k.htm"},"events":[{"id":27864,"run_id":25440,"accession_number":"0001140361-26-033135","anchor_item_number":"4.01","event_type":"auditor_change","event_domain":"governance","is_material":true,"confidence":0.98,"summary":"The filing discloses the dismissal of Frank, Rimerman + Co. LLP as the Company's independent registered public accounting firm effective August 11, 2026, and the appointment of Baker Tilly US, LLP as the new auditor effective August 12, 2026. This is a classic auditor change under Item 4.01. The disclosure is material because auditor changes signal potential accounting or governance concerns and affect investor confidence in financial reporting; notably, the prior auditor's 2024 report included substantial doubt about going concern.","company_name":"Momentus Inc.","ticker":"MNTSW","filing_date":"2026-08-14","form":"8-K","submitted_at":null,"items":[{"id":29569,"accession_number":"0001140361-26-033135","item_number":"4.01","item_title":null,"event_type":"auditor_change","event_domain":"governance","is_material":true,"confidence":0.98,"reasoning":"The filing discloses the dismissal of Frank, Rimerman + Co. LLP as the Company's independent registered public accounting firm effective August 11, 2026, and the appointment of Baker Tilly US, LLP as the new auditor effective August 12, 2026. This is a classic auditor change under Item 4.01. The disclosure is material because auditor changes signal potential accounting or governance concerns and affect investor confidence in financial reporting; notably, the prior auditor's 2024 report included substantial doubt about going concern.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-08-14T20:10:34.782173+00:00","company_name":"","ticker":null,"filing_date":""}]}],"classifications":[{"id":29569,"accession_number":"0001140361-26-033135","item_number":"4.01","item_title":null,"event_type":"auditor_change","event_domain":"governance","is_material":true,"confidence":0.98,"reasoning":"The filing discloses the dismissal of Frank, Rimerman + Co. LLP as the Company's independent registered public accounting firm effective August 11, 2026, and the appointment of Baker Tilly US, LLP as the new auditor effective August 12, 2026. This is a classic auditor change under Item 4.01. The disclosure is material because auditor changes signal potential accounting or governance concerns and affect investor confidence in financial reporting; notably, the prior auditor's 2024 report included substantial doubt about going concern.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-08-14T20:10:34.782173+00:00","company_name":"Momentus Inc.","ticker":"MNTSW","filing_date":"2026-08-14"}]}