MARA Holdings, Inc. (NASDAQ: MARA) filed a Form 8-K on August 4, 2026, disclosing the resignations of two board members and the appointment of two new directors, effective August 1, 2026.

Key Highlights

  • Two resignations: Barbara Humpton and Georges Antoun each resigned from the Board, effective July 31, 2026, citing personal reasons with no disagreements over company operations, policies, or practices.
  • Two appointments: Nancy Novak and Craig Hart were appointed to the Board on August 1, 2026, filling the vacancies left by the departing directors.
  • Committee role: Craig Hart was appointed to the Risk and Audit Committee, succeeding Georges Antoun in that seat.
  • Director classes: Nancy Novak will serve as a Class I director with a term expiring at the 2027 annual meeting; Craig Hart will serve as a Class II director with a term expiring at the 2028 annual meeting.
  • Hart's background: Craig Hart currently serves as Senior Portfolio Manager and Global Co-Head of Energy and Power at Avenue Capital Group, with more than 25 years in the energy sector.
  • Novak's background: Nancy Novak previously served as Chief Innovation Officer of Compass Datacenters and currently sits on the boards of Sims Limited and Weston Solutions.
  • Compensation: Both new directors are eligible to receive compensation under the company's non-employee director compensation program, as disclosed in the Definitive Proxy Statement filed April 30, 2026.

MARA Holdings Board Restructured With New Energy and Infrastructure Expertise

According to the filing, Barbara Humpton notified the Board on July 29, 2026, and Georges Antoun notified the Board on July 30, 2026, of their decisions to resign, with both departures effective July 31, 2026. The filing states that each director informed the Board that the 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 Board filled both vacancies on August 1, 2026, with the appointments of Craig Hart and Nancy Novak. According to the filing, Hart holds a B.A. from Colorado College, an M.B.A. from Yale School of Management, and a Master of Environmental Science from Yale School of Forestry and Environmental Studies. Before Avenue Capital Group, he served as Executive Vice President and Chief Financial Officer of US Power Generating Company. The filing also notes his involvement in the formation and growth of Middle River Power. Novak holds a B.S. in Construction Management from San Diego State University and, according to the filing, has a career spanning more than four decades across mission-critical infrastructure development, construction, and operations.

The filing states that there are no arrangements or understandings between either new director and any other person regarding their selection. It also states that there are no transactions requiring disclosure under Item 404(a) of Regulation S-K. Both Hart and Novak will each enter into an indemnification agreement with the company providing for indemnification and advancement of expenses to the fullest extent permitted by the Nevada Revised Statutes, according to the filing.

What Was Disclosed

MARA Holdings reported two board director resignations effective July 31, 2026, and the appointment of two new directors effective August 1, 2026. One new director joined the Risk and Audit Committee. Both new directors will be eligible for the company's non-employee director compensation program.