William J. Tanimoto - 16 Aug 2026 Form 4 Insider Report for TERAWULF INC. (WULF)

Reporting relationship: Chief Accounting Officer
Issuer ticker: WULF
Reported as of: 16 Aug 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 17 Aug 2026, 18:10:33 UTC
Prior SEC filing: 25 Jun 2026
Source filing: View source filing
Reporting owner signature: /s/ Stefanie C. Fleischmann, as attorney-in-fact for William J. Tanimoto

Key filing fact

William J. Tanimoto filed Form 4 for TERAWULF INC. (WULF) on 17 Aug 2026.

Key facts

This page summarizes William J. Tanimoto's Form 4 filing for TERAWULF INC. (WULF).
2 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 17 Aug 2026, 18:10.

Change

Previous filing in this sequence was filed on 25 Jun 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0002074786 Primary reporting owner

Tanimoto William Joseph

Relationship: Chief Accounting Officer
Address: C/O TERAWULF INC., 9 FEDERAL STREET, EASTON
Signature: /s/ Stefanie C. Fleischmann, as attorney-in-fact for William J. Tanimoto
Signature date: 17 Aug 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

WULF transaction

Common stock, $0.001 par value per share

Options Exercise

Transaction value
Shares: +6,666
Change %: +14%
Price
Shares after: 55,564
Date: 16 Aug 2026
Ownership: Direct
Footnotes: F1

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

WULF transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -6,666
Change %: -100%
Price
Shares after: 0
Date: 16 Aug 2026
Ownership: Direct
Underlying class: Common stock, $0.001 par value per share
Underlying amount: 6,666
Exercise price
Footnotes: F2, F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote 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.

Footnote 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.

Footnote 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.