{"schema_version":"secwatch.filing_event.v1","accession":"0001628280-26-065547","form_type":"8-K","ticker":"QMCO","cik":"0000709283","company_name":"QUANTUM CORP /DE/","filed_at":"2026-10-09T20:46:35+00:00","discovered_at":"2026-10-09T20:47:00.249586+00:00","generated_at":"2026-10-12T15:04:13.525458+00:00","sec_items":["2.02","5.02","8.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.75,"calibrated_materiality_score":0.75,"confidence":"high","headline":"Quantum expects to meet or exceed prior guidance; CFO William H. White terminated, Hiral A. Patel named PFO","bullets":["Quantum expects to meet or exceed previously issued guidance for the fiscal quarter ended Sept. 30, 2026, subject to completion of financial closing and auditor review.","William H. White was terminated as CFO and Principal Financial Officer effective Oct. 9, 2026; Quantum expects no disruption to current operations.","Hiral A. Patel, 38, was appointed Principal Financial Officer; she has been Chief Accounting Officer since Sept. 1, 2026, after roles at Pep Boys and IKEA Retail.","On Oct. 9, 2026, the board appointed Yue Zhou White to the Audit Committee and Donald J. Jaworski to the Nominating Committee; James C. Clancy resigned those seats on Sept. 28."],"urls":{"canonical":"https://secwatch.observer/filing/0001628280-26-065547","json":"https://secwatch.observer/filing/0001628280-26-065547.json","markdown":"https://secwatch.observer/filing/0001628280-26-065547.md","text":"https://secwatch.observer/filing/0001628280-26-065547.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/709283/000162828026065547/0001628280-26-065547-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/709283/000162828026065547/qtm-20261009.htm"},"model":{"generated_by":"deepseek-v4.1-flash:cloud@v2","generated_at":"2026-10-12T15:04:13.525458+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":"59698f3312","claim":"Hiral A. Patel was appointed as Principal Financial Officer at QUANTUM CORP /DE/.","evidence_excerpt":"Effective on October 9, 2026, Hiral A. Patel, the Company’s current Chief Accounting Officer and Principal Accounting Officer, was appointed the Company’s Principal Financial Officer.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/709283/000162828026065547/0001628280-26-065547-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"Principal Financial Officer"}],"fact_type":"executive_change"},{"claim_id":"b4284028cf","claim":"William H. White was terminated as Chief Financial Officer and Principal Financial Officer at QUANTUM CORP /DE/.","evidence_excerpt":"On October 9, 2026, William H. White was terminated as Chief Financial Officer and Principal Financial Officer of Quantum Corporation (the “Company”) effective immediately.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/709283/000162828026065547/0001628280-26-065547-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"terminated"},{"label":"Role","value":"Chief Financial Officer and Principal Financial Officer"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}