{"schema_version":"secwatch.filing_event.v1","accession":"0000950170-23-027257","form_type":"8-K","ticker":"ATRA","cik":"0001604464","company_name":"Atara Biotherapeutics, Inc.","filed_at":"2023-06-09T23:59:59+00:00","discovered_at":"2026-05-14T18:03:39.625750+00:00","generated_at":"2026-06-14T03:52:50.670755+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.35,"calibrated_materiality_score":0.35,"confidence":"high","headline":"Atara CTO Charlene Banard departs; signs consulting deal through Sept 2023","bullets":["Charlene Banard, EVP and Chief Technical Officer, left Atara on June 9, 2023.","She entered a consulting agreement with Atara from June 9 through September 30, 2023.","Consulting fee: $2,000 monthly for up to specified hours, plus $220/hr for excess hours.","Her outstanding equity awards will continue to vest during the consulting term."],"urls":{"canonical":"https://secwatch.observer/filing/0000950170-23-027257","json":"https://secwatch.observer/filing/0000950170-23-027257.json","markdown":"https://secwatch.observer/filing/0000950170-23-027257.md","text":"https://secwatch.observer/filing/0000950170-23-027257.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1604464/000095017023027257/0000950170-23-027257-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1604464/000095017023027257/atra-20230609.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-14T03:52:50.670755+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":[{"claim_id":"77335147ae","claim":"Charlene Banard departed as Executive Vice President, Chief Technical Officer at Atara Biotherapeutics, Inc..","evidence_excerpt":"On May 8, 2023, Atara Biotherapeutics, Inc., a Delaware corporation (the “Company”), announced that Charlene Banard, the Company’s Executive Vice President, Chief Technical Officer, would depart the Company on June 9, 2023.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1604464/000095017023027257/0000950170-23-027257-index.htm","confidence":1.0,"family_label":"Executive change","details":[{"label":"Action","value":"departed"},{"label":"Role","value":"Executive Vice President, Chief Technical Officer"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}