{"schema_version":"secwatch.filing_event.v1","accession":"0000950170-25-082697","form_type":"8-K","ticker":"MBX","cik":"0001776111","company_name":"MBX Biosciences, Inc.","filed_at":"2025-06-06T23:59:59+00:00","discovered_at":"2026-05-14T18:02:49.673229+00:00","generated_at":"2026-05-19T18:30:08.151033+00:00","sec_items":["5.02","5.07"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.25,"calibrated_materiality_score":0.25,"confidence":"high","headline":"MBX Biosciences elects Tiba Aynechi and Kent Hawryluk as Class I directors; Carl Gordon departs board","bullets":["Stockholders elected Tiba Aynechi (24.3M for) and P. Kent Hawryluk (24.4M for) to three-year terms ending 2028.","Carl L. Gordon, Ph.D., CFA departed the board effective June 5, 2025; his term ended at the annual meeting.","Ratification of Ernst & Young as independent auditor for FY2025 passed with 27.8M for, 3,467 against.","Annual meeting held June 5, 2025; 33.4M shares outstanding as of April 11 record date."],"urls":{"canonical":"https://secwatch.observer/filing/0000950170-25-082697","json":"https://secwatch.observer/filing/0000950170-25-082697.json","markdown":"https://secwatch.observer/filing/0000950170-25-082697.md","text":"https://secwatch.observer/filing/0000950170-25-082697.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1776111/000095017025082697/0000950170-25-082697-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1776111/000095017025082697/mbx-20250605.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-19T18:30:08.151033+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":"0b2cdb5428","claim":"Carl L. Gordon departed as Director at MBX Biosciences, Inc..","evidence_excerpt":"Also effective as of June 5, 2025 was the departure of Carl L. Gordon, Ph.D., CFA from the Company's board of directors.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1776111/000095017025082697/0000950170-25-082697-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"departed"},{"label":"Role","value":"Director"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}