As of November 6, 2026, MARA Holdings, Inc. has reported one leadership change filing to the SEC under Item 5.02 of Form 8-K, on August 4, 2026 (Form 8-K, August 4, 2026).
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MARA Holdings, Inc. reported a change among its directors and officers to the SEC on Form 8-K, Item 5.02, on 2026-08-04. Every row below is cited to the filing it comes from, and this page adds each new change as MARA Holdings, Inc. files it.
Also on the record for MARA Holdings, Inc.
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| April 30, 2026 | Stake report, Schedule 13G, by Vanguard Capital Management | 5.05% of the class | 5%+ stakes | Source |
| April 29, 2026 | Stake report, Schedule 13G, by Vanguard Portfolio Management | 6.99% of the class | 5%+ stakes | Source |
| March 27, 2026 | Stake report, Schedule 13G/A, by The Vanguard Group | — | 5%+ stakes | Source |
| November 13, 2025 | Stake report, Schedule 13G/A, by G1 Execution Services, LLC | 4.9% of the class | 5%+ stakes | Source |
| August 14, 2025 | Stake report, Schedule 13G, by G1 Execution Services, LLC | 5.3% of the class | 5%+ stakes | Source |
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More on MARA Holdings, Inc. and the records around it.
MARA Holdings, Inc. elsewhere on the record
Companies that share a holder
- G1 Execution Services, LLC also filed stake reports on 45 other companies: AmpliTech Group, Inc. (Aug 2026), Bitdeer Technologies Group (Aug 2026), Compass Diversified Holdings (Aug 2026)
- Vanguard Portfolio Management also filed stake reports on 941 other companies: Newmark Group Inc (Nov 2026), A10 Networks Inc (Oct 2026), ADT Inc (Oct 2026)
- Vanguard Capital Management also filed stake reports on 1495 other companies: A10 Networks Inc (Oct 2026), Altisource Portfolio Solutions SA (Oct 2026), Alto Neuroscience Inc (Oct 2026)
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Timeline
| Filed | In / out | Person | Role | Effective | Source |
|---|---|---|---|---|---|
| 2026-08-04 | Reported | not named in the filing | 8-K, 2026-08-04 |
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Reported
On July 29, 2026 and July 30, 2026, Barbara Humpton and Georges Antoun, respectively, notified the board of directors (the "Board") of MARA Holdings, Inc. (the "Company") of their decision to resign from the Board, effective as of July 31, 2026, which the Board accepted.
- Each of Ms. Humpton and Mr. Antoun informed the Board that their resignation was for personal reasons and was not due to any disagreements with the Company relating to the Company's operations, policies or practices.
- The Company thanks Ms. Humpton and Mr. Antoun for their Board service and wishes them well.
- Appointment of Directors On August 1, 2026, the Board appointed each of Nancy Novak and Craig Hart to serve as a director on the Board, filling the vacancies created by the aforementioned resignations, effective immediately.
- Mr. Hart has also been appointed to serve as a member of the Risk and Audit Committee of the Board, succeeding Mr. Antoun.
- Ms. Novak will serve as a Class I director, with a term expiring at the Company's 2027 annual meeting of stockholders or until her successor is duly elected and qualified, or until her earlier death, resignation or removal.
- Mr. Hart will serve as a Class II director, with a term expiring at the Company's 2028 annual meeting of stockholders or until his successor is duly elected and qualified, or until his earlier death, resignation or removal.
- Mr. Hart currently serves as Senior Portfolio Manager and Global Co-Head of Energy and Power at Avenue Capital Group, where he leads the firm's private power strategy.
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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.