{"schema_version":"secwatch.filing_event.v1","accession":"0001493152-25-009775","form_type":"8-K","ticker":"MTNB","cik":"0001582554","company_name":"Matinas BioPharma Holdings, Inc.","filed_at":"2025-03-11T23:59:59+00:00","discovered_at":"2026-05-14T18:03:04.073075+00:00","generated_at":"2026-05-24T23:42:18.300831+00:00","sec_items":["5.02","8.01","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.6,"calibrated_materiality_score":0.6,"confidence":"high","headline":"Matinas BioPharma appoints Keith Murphy and Edward Neugeboren to board; two directors resign","bullets":["Natasha Giordano and Matthew Wikler resigned from the Board effective Feb 11, 2025, not due to any disagreement.","Keith Murphy (Organovo Executive Chairman) appointed director, Chair of Governance Committee, Compensation Committee member.","Edward Neugeboren (Cronus Pharma Chief Strategy Officer) appointed director, Chair of Compensation, Audit Committee member.","Neugeboren qualifies as audit committee financial expert; both are independent under NYSE and SEC rules.","New directors bring significant healthcare, biotech, and capital markets experience; effective March 11, 2025."],"urls":{"canonical":"https://secwatch.observer/filing/0001493152-25-009775","json":"https://secwatch.observer/filing/0001493152-25-009775.json","markdown":"https://secwatch.observer/filing/0001493152-25-009775.md","text":"https://secwatch.observer/filing/0001493152-25-009775.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1582554/000149315225009775/0001493152-25-009775-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1582554/000149315225009775/form8-k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-24T23:42:18.300831+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":"80e0166433","claim":"Edward Neugeboren was appointed as Director at Matinas BioPharma Holdings, Inc..","evidence_excerpt":"The Board appointed Mr. Neugeboren to serve as a member of the Audit Committee and as Chair of the Compensation Committee.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1582554/000149315225009775/0001493152-25-009775-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"Director"}],"fact_type":"executive_change"},{"claim_id":"a51bc022cd","claim":"Natasha Giordano resigned as Director at Matinas BioPharma Holdings, Inc..","evidence_excerpt":"On February 10, 2025, Natasha Giordano informed the Board of Directors (the “ Board ”) of Matinas BioPharma Holdings, Inc. (the “ Company ”) that she was resigning from the Board effective February 11, 2025, due to her other professional obligations.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1582554/000149315225009775/0001493152-25-009775-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"resigned"},{"label":"Role","value":"Director"}],"fact_type":"executive_change"},{"claim_id":"b32e94818d","claim":"Matthew Wikler resigned as Director at Matinas BioPharma Holdings, Inc..","evidence_excerpt":"On February 10, 2025, Matthew Wikler informed the Board that he was resigning from the Board effective February 11, 2025, due to his other professional obligations.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1582554/000149315225009775/0001493152-25-009775-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"resigned"},{"label":"Role","value":"Director"}],"fact_type":"executive_change"},{"claim_id":"b401cb080e","claim":"Keith Murphy was appointed as Director at Matinas BioPharma Holdings, Inc..","evidence_excerpt":"Effective as of March 11, 2025, the Board, on the recommendation of the Governance Committee, appointed Keith Murphy and Edward Neugeboren directors of the Company to replace Ms. Giordano and Mr. Wikler, respectively.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1582554/000149315225009775/0001493152-25-009775-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"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"}