{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-24-070787","form_type":"8-K","ticker":"DCTH","cik":"0000872912","company_name":"DELCATH SYSTEMS, INC.","filed_at":"2024-03-19T23:59:59+00:00","discovered_at":"2026-05-14T18:03:27.097989+00:00","generated_at":"2026-06-04T14:19:36.211321+00:00","sec_items":["5.02","7.01","9.01"],"event_type":"leadership","sentiment":"positive","materiality_score":0.65,"calibrated_materiality_score":0.65,"confidence":"high","headline":"Delcath appoints Martha Rook as COO effective March 18, 2024","bullets":["Martha Rook appointed COO; succeeds John Purpura who is retiring after consulting transition.","Rook brings 25+ years experience from insitro, Sigilon, MilliporeSigma; Ph.D. in biochemistry from MIT.","Compensation: $425,000 base salary, up to 40% bonus, 125,000 options vesting over 36 months.","Purpura enters 6-month consulting agreement; 91,596 options vest over period, expiry extended to Sep 2025."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-24-070787","json":"https://secwatch.observer/filing/0001193125-24-070787.json","markdown":"https://secwatch.observer/filing/0001193125-24-070787.md","text":"https://secwatch.observer/filing/0001193125-24-070787.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/872912/000119312524070787/0001193125-24-070787-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/872912/000119312524070787/d748780d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-04T14:19:36.211321+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":"45f102e95c","claim":"Martha S. Rook was appointed as Chief Operating Officer at DELCATH SYSTEMS, INC..","evidence_excerpt":"Effective as of March 18, 2024, Delcath Systems, Inc. (the “Company”) appointed Martha S. Rook, Ph.D., as Chief Operating Officer of the Company.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/872912/000119312524070787/0001193125-24-070787-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"Chief Operating Officer"}],"fact_type":"executive_change"},{"claim_id":"93f2de2017","claim":"John Purpura retired as Chief Operating Officer at DELCATH SYSTEMS, INC..","evidence_excerpt":"As previously reported on February 12, 2024, John Purpura notified the Company of his intent to retire as the Company’s Chief Operating Officer","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/872912/000119312524070787/0001193125-24-070787-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"retired"},{"label":"Role","value":"Chief Operating Officer"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}