Terawulf

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-03-17 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: 2026-03-17 | Code: P (Open market purchase) Shares: +1,584 | Price: $16.00 Total Value: $25,344.00 Shares Owned After: 275,136 | Ownership: D (Direct) [Transaction #2] Security: Common stock, $0.001 par value per share Date: 2026-03-18 | Code: P (Open market purchase) Shares: +1,581 | Price: $15.79 Total Value: $24,963.99 Shares Owned After: 276,717 | Ownership: D (Direct) [Transaction #3] Security: Common stock, $0.001 par value per share Date: 2026-03-19 | Code: P (Open market purchase) Shares: +1,670 | Price: $14.96 Total Value: $24,983.20 Shares Owned After: 278,387 | Ownership: D (Direct) --- Signature --- /s/ /s/ Stefanie C. Fleischmann, as attorney-in-fact for Michael C. Bucella (2026-03-19)