X0609 4 2026-09-08 0 0001083301 TERAWULF INC. WULF 0001877502 Motz Catherine J. false C/O TERAWULF INC. 9 FEDERAL STREET EASTON MD 21601 1 0 0 0 0 Common stock, $0.001 par value per share 2026-09-08 4 S 0 56023 17.8131 D 153218 D The Price reported in Column 4 is a weighted average price. The shares of common stock, par value $0.001 per share ("Common Stock"), of TeraWulf Inc. were sold in multiple transactions at a price ranging from $17.71 to $17.99, inclusive. The Reporting Person undertakes to provide to the staff of the Securities and Exchange Commission, to any security holder of TeraWulf Inc. or to TeraWulf Inc., upon request, full information regarding the number of shares of Common Stock sold at each separate price within the range set forth above. /s/ Stefanie C. Fleischmann, as attorney-in-fact for Catherine J. Motz 2026-09-09