{"schema_version":"secwatch.filing_event.v1","accession":"0001193805-22-001719","form_type":"8-K","ticker":"ARCT","cik":"0001768224","company_name":"Arcturus Therapeutics Holdings Inc.","filed_at":"2022-12-13T23:59:59+00:00","discovered_at":"2026-05-14T18:03:52.041191+00:00","generated_at":"2026-06-21T05:34:58.370030+00:00","sec_items":["5.02","7.01","9.01"],"event_type":"leadership","sentiment":"positive","materiality_score":0.5,"calibrated_materiality_score":0.5,"confidence":"high","headline":"Arcturus appoints former Merck Global Vaccines President John Markels to board","bullets":["John Markels, Ph.D., appointed to Board of Directors effective December 8, 2022.","Markels most recently President of Global Vaccines at Merck; retired March 2022 after 35 years.","He will provide strategic oversight to Arcturus' vaccine franchise and manufacturing processes.","Markels also serves on the board of Sangamo Therapeutics."],"urls":{"canonical":"https://secwatch.observer/filing/0001193805-22-001719","json":"https://secwatch.observer/filing/0001193805-22-001719.json","markdown":"https://secwatch.observer/filing/0001193805-22-001719.md","text":"https://secwatch.observer/filing/0001193805-22-001719.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1768224/000119380522001719/0001193805-22-001719-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1768224/000119380522001719/e618121_8k-arct.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-21T05:34:58.370030+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":"04424aad40","claim":"John Markels was appointed as Director at Arcturus Therapeutics Holdings Inc..","evidence_excerpt":"On December 8, 2022, Dr. John Markels agreed to serve as a member of the Board of Directors of Arcturus Therapeutics Holdings Inc.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1768224/000119380522001719/0001193805-22-001719-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"}