X0609 4 2026-05-18 0 0001507605 MARA Holdings, Inc. MARA 0001567383 Thiel Frederick G false C/O MARA HOLDINGS, INC. 1010 SOUTH FEDERAL HIGHWAY, SUITE 2700 HALLANDALE BEACH FL 33009 1 1 0 0 Chief Executive Officer 1 Common Stock 2026-05-18 4 F 0 27316 11.46 D 4617019 D Common Stock 2026-05-18 4 S 0 27505 12.00 D 4589514 D Reflects shares of the issuer's common stock withheld to cover the reporting person's tax liability in connection with the vesting of restricted stock units. This transaction was not an open market sale by the reporting person. The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 28, 2025. /s/ Zabi Nowaid, Attorney-in-Fact for Fred Thiel 2026-05-20