{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-25-113811","form_type":"8-K","ticker":"ATRA","cik":"0001604464","company_name":"Atara Biotherapeutics, Inc.","filed_at":"2025-05-06T23:59:59+00:00","discovered_at":"2026-05-14T18:02:48.982614+00:00","generated_at":"2026-05-22T12:02:07.166105+00:00","sec_items":["8.01","9.01"],"event_type":"regulatory","sentiment":"positive","materiality_score":0.75,"calibrated_materiality_score":0.75,"confidence":"high","headline":"FDA lifts clinical hold on Atara's EBVALLO program; Type A meeting granted","bullets":["FDA lifted clinical hold on EBVALLO (tabelecleucel) IND applications, allowing resumption of Phase 3 ALLELE and Phase 2 label-expansion studies.","FDA granted a Type A meeting to discuss path forward for BLA resubmission after January 2025 CRL citing GMP issues at third-party facility.","Strategic option evaluation temporarily paused pending FDA clarity on BLA resubmission timing.","Clinical hold directly linked to GMP compliance issues identified during pre-license inspection; resolved with supplemental finished drug product data."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-25-113811","json":"https://secwatch.observer/filing/0001193125-25-113811.json","markdown":"https://secwatch.observer/filing/0001193125-25-113811.md","text":"https://secwatch.observer/filing/0001193125-25-113811.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1604464/000119312525113811/0001193125-25-113811-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1604464/000119312525113811/d905721d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-22T12:02:07.166105+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"}