{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-22-307331","form_type":"8-K","ticker":"ACLX","cik":"0001786205","company_name":"Arcellx, Inc.","filed_at":"2022-12-16T23:59:59+00:00","discovered_at":"2026-05-14T18:03:52.113604+00:00","generated_at":"2026-06-21T03:29:15.901732+00:00","sec_items":["5.03","9.01"],"event_type":"other","sentiment":"neutral","materiality_score":0.1,"calibrated_materiality_score":0.1,"confidence":"high","headline":"Arcellx amends and restates bylaws to update director nomination procedures and conform to Delaware law","bullets":["Board amended and restated bylaws effective December 15, 2022, revising director nomination and stockholder proposal procedures.","Requires stockholders nominating directors to provide evidence of Rule 14a-19 compliance no later than five business days before the meeting.","Updates stockholder meeting procedures to conform to recent amendments to the Delaware General Corporation Law.","Makes various updates to conform to current Delaware law, including ministerial and clarifying changes."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-22-307331","json":"https://secwatch.observer/filing/0001193125-22-307331.json","markdown":"https://secwatch.observer/filing/0001193125-22-307331.md","text":"https://secwatch.observer/filing/0001193125-22-307331.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1786205/000119312522307331/0001193125-22-307331-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1786205/000119312522307331/d413893d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-21T03:29:15.901732+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":"51da6d7b49d0663a18a39abb067b6014d7855287","claim":"Arcellx, Inc.: Amended and restated bylaws to revise director nomination procedures, stockholder meeting procedures, and other conforming updates effective immediately (effective 2022-12-15).","evidence_excerpt":"On December 15, 2022, the Board of Directors (the “Board”) of Arcellx, Inc. (the “Company”) amended and restated the Company’s amended and restated bylaws, effective immediately.","evidence_source":"SEC 8-K Item 5.03/5.05/5.06","evidence_url":"https://www.sec.gov/Archives/edgar/data/1786205/000119312522307331/0001193125-22-307331-index.htm","confidence":0.9,"family_label":"Governance Changes","details":[{"label":"Change","value":"bylaw amendment"},{"label":"Effective","value":"2022-12-15"}],"fact_type":"governance_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}