Terawulf

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-09-08 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: TERAWULF INC. (WULF) CIK: 0001083301 --- Reporting Owner --- Name: Motz Catherine J. CIK: 0001877502 Role: Director --- Non-Derivative Transactions --- [Transaction #1] Security: Common stock, $0.001 par value per share Date: 2026-09-08 | Code: S (Open market sale) Shares: -56,023 | Price: $17.81 Total Value: $997,943.30 Shares Owned After: 153,218 | Ownership: D (Direct) Footnotes: [F1] 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. --- Footnotes (Complete Index) --- F1: 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. --- Signature --- /s/ /s/ Stefanie C. Fleischmann, as attorney-in-fact for Catherine J. Motz (2026-09-09)