{"schema_version":"secwatch.filing_event.v1","accession":"0001628280-26-062137","form_type":"8-K","ticker":"ABOS","cik":"0001576885","company_name":"Acumen Pharmaceuticals, Inc.","filed_at":"2026-09-16T13:26:38+00:00","discovered_at":"2026-09-16T13:28:01.441824+00:00","generated_at":"2026-09-16T13:28:16.302284+00:00","sec_items":["7.01","9.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.3,"calibrated_materiality_score":0.3,"confidence":"low","headline":"Acumen hosts Sept 16 Investor Day; no substantive data in 8-K exhibit","bullets":["Investor Day held Sept 16, 2026 beginning 10:00 a.m. ET; live webcast hosted by Acumen Pharmaceuticals.","Slide deck posted on IR website after event; Exhibit 99.1 contains title slide only — no results or guidance.","No financial, clinical, or guidance figures disclosed anywhere in this filing; presentation content not included.","Signed by CFO/Chief Business Officer Matthew Zuga; common stock listed on Nasdaq under ABOS."],"urls":{"canonical":"https://secwatch.observer/filing/0001628280-26-062137","json":"https://secwatch.observer/filing/0001628280-26-062137.json","markdown":"https://secwatch.observer/filing/0001628280-26-062137.md","text":"https://secwatch.observer/filing/0001628280-26-062137.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1576885/000162828026062137/0001628280-26-062137-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1576885/000162828026062137/abos-20260916.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-09-16T13:28:16.302284+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"}