TERAWULF INC. (WULF) · Insider Trading (Form 4) SEC Filing

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-06-23 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: TERAWULF INC. (WULF) CIK: 0001083301 --- Reporting Owner --- Name: Bucella Michael C. CIK: 0001915351 Role: Director --- Non-Derivative Transactions --- [Transaction #1] Security: Common stock, $0.001 par value per share Date: 2026-06-23 | Code: M (Exercise of derivative) Shares: +56,023 Shares Owned After: 337,808 | Ownership: D (Direct) Footnotes: [F1] The Reporting Person received restricted stock units which vested upon the first anniversary of June 23, 2025, 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: 2026-06-23 | Code: M (Exercise of derivative) Shares: -56,023 | Price: $0.00 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 upon the first anniversary of June 23, 2025, subject to the Reporting Person's continued employment or service with the Issuer through such date. [F3] The restricted stock units vested upon the first anniversary of June 23, 2025, subject to the Reporting Person's continued employment or service with the Issuer through such date. [Transaction #2] Security: Restricted Stock Units Date: 2026-06-23 | Code: A (Grant or award) Shares: +6,950 | Price: $0.00 Shares Owned After: 6,950 | 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. [F4] The restricted stock units will vest upon the first anniversary of June 23, 2026, subject to the Reporting Person's continued employment or service with the Issuer through such date. [F4] The restricted stock units will vest upon the first anniversary of June 23, 2026, subject to the Reporting Person's continued employment or service with the Issuer through such date. --- Footnotes (Complete Index) --- F1: The Reporting Person received restricted stock units which vested upon the first anniversary of June 23, 2025, 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 upon the first anniversary of June 23, 2025, subject to the Reporting Person's continued employment or service with the Issuer through such date. F4: The restricted stock units will vest upon the first anniversary of June 23, 2026, subject to the Reporting Person's continued employment or service with the Issuer through such date. --- Signature --- /s/ /s/ Stefanie C. Fleischmann, as attorney-in-fact for Michael C. Bucella (2026-06-25)