Terawulf

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-08-16 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: TERAWULF INC. (WULF) CIK: 0001083301 --- Reporting Owner --- Name: Tanimoto William Joseph CIK: 0002074786 Role: Officer (Chief Accounting Officer) --- Non-Derivative Transactions --- [Transaction #1] Security: Common stock, $0.001 par value per share Date: 2026-08-16 | Code: M (Exercise of derivative) Shares: +6,666 Shares Owned After: 55,564 | Ownership: D (Direct) Footnotes: [F1] The Reporting Person received Restricted Stock Units which vested in accordance with their terms upon the third anniversary of August 16, 2023, as reported in this Form 4, subject to the Reporting Person's continued employment or service with the Issuer through such date. --- Derivative Transactions --- [Transaction #1] Security: Restricted Stock Units Date: 2026-08-16 | Code: M (Exercise of derivative) Shares: -6,666 Shares Owned After: 0 | Ownership: D (Direct) Footnotes: [F2] Each Restricted Stock Unit represents a contingent right to receive one share of the Issuer's common stock, $0.001 par value per share. [F3] The restricted stock units vested in accordance with their terms upon the third anniversary of August 16, 2023, subject to the Reporting Person's continued employment or service with the Issuer through each such date. [F3] The restricted stock units vested in accordance with their terms upon the third anniversary of August 16, 2023, subject to the Reporting Person's continued employment or service with the Issuer through each such date. [F3] The restricted stock units vested in accordance with their terms upon the third anniversary of August 16, 2023, subject to the Reporting Person's continued employment or service with the Issuer through each such date. --- Footnotes (Complete Index) --- F1: The Reporting Person received Restricted Stock Units which vested in accordance with their terms upon the third anniversary of August 16, 2023, as reported in this Form 4, subject to the Reporting Person's continued employment or service with the Issuer through such date. F2: Each Restricted Stock Unit represents a contingent right to receive one share of the Issuer's common stock, $0.001 par value per share. F3: The restricted stock units vested in accordance with their terms upon the third anniversary of August 16, 2023, subject to the Reporting Person's continued employment or service with the Issuer through each such date. --- Signature --- /s/ /s/ Stefanie C. Fleischmann, as attorney-in-fact for William J. Tanimoto (2026-08-17)