William H. White's departure as Chief Financial Officer and Principal Financial Officer of Quantum Corp /De/ was reported; the filing names no successor. As of November 7, 2026, Quantum Corp /De/ has reported 3 leadership change filings to the SEC under Item 5.02 of Form 8-K, from September 1, 2026 to October 9, 2026, naming 1 appointment and 1 departure (Form 8-K, October 9, 2026).
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Key facts
- · In / out: Out · Person: William H. White · Role: Chief Financial Officer and Principal Financial Officer · 8-K, 2026-10-09
- · In / out: Reported · Person: not named in the filing · 8-K, 2026-09-28
- · In / out: Reported · Person: not named in the filing · 8-K, 2026-09-01
Quantum Corp /De/ reported changes in 3 filings among its directors and officers to the SEC on Form 8-K, Item 5.02, from 2026-09-01 to 2026-10-09. They name 2 people, with 1 appointment and 1 departure. Every row below is cited to the filing it comes from, and this page adds each new change as Quantum Corp /De/ files it.
Also on the record for Quantum Corp /De/
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| November 6, 2026 | Stake report, Schedule 13G, by Barclays PLC | 5.6% of the class | 5%+ stakes | Source |
| August 14, 2026 | Stake report, Schedule 13G, by Alyeska Investment Group, L.P. | 6.74% of the class | 5%+ stakes | Source |
| August 14, 2026 | Stake report, Schedule 13G, by Two Seas Capital LP | 6.3% of the class | 5%+ stakes | Source |
| August 10, 2026 | Stake report, Schedule 13G, by Oaktree Capital Management LP | 5.11% of the class | 5%+ stakes | Source |
| June 8, 2026 | Stake report, Schedule 13D/A, by Dialectic Technology SPV LLC | 40% of the class | 5%+ stakes | Source |
| January 12, 2026 | Stake report, Schedule 13D/A, by Dialectic Technology SPV LLC | 41.4% of the class | 5%+ stakes | Source |
| December 22, 2025 | Stake report, Schedule 13D/A, by Dialectic Technology SPV LLC | 37.3% of the class | 5%+ stakes | Source |
| October 10, 2025 | Stake report, Schedule 13D, by Dialectic Technology SPV LLC | 16.7% of the class | 5%+ stakes | Source |
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More on Quantum Corp /De/ and the records around it.
Quantum Corp /De/ elsewhere on the record
- 5%+ stake filings Nov 2026
- Who owns it
Companies that share a holder
- Oaktree Capital Management LP also filed stake reports on 3 other companies: MATTHEWS INTERNATIONAL CORPORATION (Oct 2026), SharonAI Holdings Inc. (Aug 2026), Rice Acquisition Corp 3 (Feb 2026)
- Two Seas Capital LP also filed stake reports on 14 other companies: NEKTAR THERAPEUTICS (Sep 2026), Calumet, Inc. (Aug 2026), Sable Offshore Corp. (Aug 2026)
- Alyeska Investment Group, L.P. also filed stake reports on 81 other companies: ABUNDIA GLOBAL IMPACT GROUP, INC. (Aug 2026), Bakkt, Inc. (Aug 2026), BATTALION OIL CORP (Aug 2026)
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Timeline
| Filed | In / out | Person | Role | Effective | Source |
|---|---|---|---|---|---|
| 2026-10-09 | Out | Chief Financial Officer and Principal Financial Officer | 8-K, 2026-10-09 | ||
| 2026-10-09 | In | Chief Accounting Officer and Principal Accounting Officer | 2026-10-09 | 8-K, 2026-10-09 | |
| 2026-09-28 | Reported | not named in the filing | 8-K, 2026-09-28 | ||
| 2026-09-01 | Reported | not named in the filing | 8-K, 2026-09-01 |
Who leads Quantum Corp /De/, as last reported?
For each role that changed in the filings below, the most recent change reported. A role that did not change in these filings is not listed.
- Chief Accounting Officer and Principal Accounting Officer: Hiral A. Patel, appointed, effective 2026-10-09 (filed 2026-10-09).
- Chief Financial Officer and Principal Financial Officer: William H. White, departure reported (filed 2026-10-09). No successor is named in these filings.
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Find candidates like Chief Financial Officer and Principal Financial Officer at Quantum Corp /De/Every change, in the filing's words
Departing: William H. White, Chief Financial Officer and Principal Financial Officer
On October 9, 2026, William H. White was terminated as Chief Financial Officer and Principal Financial Officer of Quantum Corporation (the "Company") effective immediately.
Appointed: Hiral A. Patel, Chief Accounting Officer and Principal Accounting Officer, effective 2026-10-09
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.
- No disruption to current operations is expected as a result of Mr. White's termination.
- The Company expects to timely file its quarterly report on Form 10-Q for the fiscal quarter ended September 30, 2026.
- Ms. Patel, 38, has served as the Company's Chief Accounting Officer and Principal Accounting Officer since September 1, 2026.
- Prior to that, she served as Chief Accounting Officer at Pep Boys, an automotive service and retail company, from October 2025 to June 2026.
- From March 2024 to October 2025, Ms. Patel was Vice President, Controller at IKEA Retail, the global home furnishing division of IKEA.
- Prior to that, Ms. Patel held positions of Senior Director of Accounting and Corporate Assistant Controller at VeriFone Systems Inc., a leader in payments and commerce solutions, from September 2020 to March 2024.
- She also served as Assurance Senior Manager for Ernst & Young LLP, a large global independent public accounting firm, from October 2011 to August 2020.
- Ms. Patel is a Certified Public Accountant and holds a Bachelor of Business Administration degree from Temple University.
Reported
On September 28, 2026, Quantum Corporation (the "Company") announced the appointment of James C. Clancy as the Company's Chief Operating Officer, effective September 28, 2026.
- In connection with his appointment, effective as of the same date, Mr. Clancy voluntarily resigned his position as a member of the Company's Board of Directors and as a member of the Company's Audit Committee and Corporate Governance and Nominating Committee.
- Mr. Clancy, 59, has served as a business advisor to various technology companies, most recently including Hycu, an artificial intelligence resilience company, Black Kite, a cyber risk management platform provider, Index Engines, a cybersecurity and cyber recovery solutions provider, and Nexus Advisory Partners, a commercial finance advisory firm, since December 2024.
- Mr. Clancy previously served as the Senior Vice President, Global Sales, Data Protection Solutions at Dell Technologies Inc., a publicly-traded technology company, from 2019 until December 2024.
- Prior to that, Mr. Clancy held various positions at Dell including President of Global Specialties Sales from 2018 to 2019 and Senior Vice President, Global Sales, Data Protection Solutions from 2013 to 2018.
- Additionally, Mr. Clancy served as Divisional Vice President, Americas for EMC's Backup Recovery Systems Division at EMC Corporation (later acquired by Dell), from 2011 to 2013 and in various senior roles from 1998 to 2011.
- Mr. Clancy earned a Bachelor of Business Administration and General Management Degree from the University of Massachusetts Dartmouth.
Reported
On September 1, 2026, Quantum Corporation (the "Company") announced the appointment of Hiral A. Patel as the Company's Chief Accounting Officer, effective September 1, 2026.
- In connection with her appointment, Ms. Patel will also assume the role of Principal Accounting Officer.
- Ms. Patel, 38, most recently served as Chief Accounting Officer at Pep Boys, an automotive service and retail company, from October 2025 to June 2026.
- From March 2024 to October 2025, Ms. Patel was Vice President, Controller at IKEA Retail, the global home furnishing division of IKEA.
- Prior to that, Ms. Patel held positions of Senior Director of Accounting and Corporate Assistant Controller at VeriFone Systems Inc., a leader in payments and commerce solutions, from September 2020 to March 2024.
- She also served as Assurance Senior Manager for Ernst & Young LLP, a large global independent public accounting firm, from October 2011 to August 2020.
- Ms. Patel is a Certified Public Accountant and holds a Bachelor of Business Administration degree from Temple University.
- In connection with her appointment, Ms. Patel entered into an offer letter (the "Offer Letter") with the Company providing for (a) an annual base salary of $335,000 and (b) participation in the Company's bonus program with a target bonus equal to 50% of her base salary, with the actual payout to be based on company and individual performance.
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Where this comes from
A public company must file a current report on Form 8-K with the SEC within four business days when a director leaves or is elected, or when its chief executive, chief financial, chief accounting or chief operating officer, or another named executive, departs or is appointed. That disclosure goes under Item 5.02 of the report.
Every change on this page is taken from one of those filings and quoted in the company's own words, with a link to the filing, so it can be checked at the source. Where a filing names the person, the role and the date a change takes effect, they are shown beside the quote. Where it does not, the quote stands on its own. A filing states what changed; it rarely states why, and neither does this page.