{"schema_version":"secwatch.filing_event.v1","accession":"0001641172-25-003620","form_type":"8-K","ticker":"PULM","cik":"0001574235","company_name":"Pulmatrix, Inc.","filed_at":"2025-04-10T23:59:59+00:00","discovered_at":"2026-05-14T18:02:48.843929+00:00","generated_at":"2026-05-23T17:16:39.343831+00:00","sec_items":["1.01","5.01","9.01"],"event_type":"m_and_a","sentiment":"neutral","materiality_score":0.65,"calibrated_materiality_score":0.65,"confidence":"high","headline":"Pulmatrix and Cullgen amend merger agreement to one-step merger; Second Merger Sub removed","bullets":["Amendment No. 1 dated April 7, 2025 changes transaction from two-step to one-step merger, eliminating Second Merger Sub.","Clarifies fractional shares provision; Cullgen will survive as wholly owned subsidiary of Pulmatrix.","Boards of both companies approved the amendment; all other terms of original November 13, 2024 agreement remain.","Transaction remains subject to stockholder approval, regulatory clearances, and Nasdaq listing; consideration unchanged."],"urls":{"canonical":"https://secwatch.observer/filing/0001641172-25-003620","json":"https://secwatch.observer/filing/0001641172-25-003620.json","markdown":"https://secwatch.observer/filing/0001641172-25-003620.md","text":"https://secwatch.observer/filing/0001641172-25-003620.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1574235/000164117225003620/0001641172-25-003620-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1574235/000164117225003620/form8-k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-23T17:16:39.343831+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":[],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}