Marathon Digital Holdings, Inc. has appointed Doug Mellinger to its board of directors, effective March 31, 2022. As a result, Marathon's board of directors now consists of seven directors, including six independent directors and one inside director. Mellinger is a managing director at Clarion Capital Partners.

He currently serves on the board of directors of Foundation Source which he co-founded in 2000; the board of directors of Campden Wealth and IPI (Institute for Private Investors; and the board of directors of International Education Corporation (IEC).