MARA Holdings, Inc. insider Frederick G. Thiel reported a sale of company common stock on July 17, 2026, according to a Form 4 filed on July 20, 2026. Thiel sold 27,505 shares of MARA common stock at a reported price of $10.90 per share. The transaction was reported as a sale of common stock, commonly reflected on Form 4 with transaction code “S.” Based on the reported price and share count, the sale represented approximately $299,805 in gross proceeds before any commissions, taxes or other costs. The filing notes that the sale was made under a Rule 10b5-1 trading plan adopted by Thiel on May 28, 2025. Such plans allow company insiders to establish prearranged trading instructions at a time when they are not in possession of material nonpublic information, helping separate later transactions from discretionary timing decisions. The excerpted filing does not provide Thiel’s beneficial ownership after the transaction or list additional derivative securities, option exercises, vesting events or other equity changes. The Form 4 was signed on Thiel’s behalf by Zabi Nowaid, attorney-in-fact, on July 20, 2026.