{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-26-236820","form_type":"8-K","ticker":"SNSE","cik":"0001829802","company_name":"Sensei Biotherapeutics, Inc.","filed_at":"2026-05-22T20:01:45+00:00","discovered_at":"2026-05-22T20:03:00.306131+00:00","generated_at":"2026-05-22T21:30:14.717989+00:00","sec_items":["8.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.5,"confidence":"high","headline":"Sensei Biotherapeutics delays Karen Vousden board appointment to later 2026; board size set to five","bullets":["Karen Vousden delays board appointment to later 2026 due to personal reasons; Board to consider appointment in Q3 or Q4 2026.","If stockholder matters pass at June 10 annual meeting, Bob Holmen to become chair of Nominating and Corporate Governance Committee on June 12.","Board size approved at five directors effective upon reconstitution.","Annual meeting scheduled June 10, 2026; definitive proxy filed April 27."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-26-236820","json":"https://secwatch.observer/filing/0001193125-26-236820.json","markdown":"https://secwatch.observer/filing/0001193125-26-236820.md","text":"https://secwatch.observer/filing/0001193125-26-236820.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1829802/000119312526236820/0001193125-26-236820-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1829802/000119312526236820/d900837d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-22T21:30:14.717989+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"}