Michael C. Bucella - 23 Jun 2026 Form 4 Insider Report for TERAWULF INC. (WULF)

Reporting relationship: Director
Issuer ticker: WULF
Reported as of: 23 Jun 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 25 Jun 2026, 17:16:31 UTC
Prior SEC filing: 09 Apr 2026
Next SEC filing: 01 Jul 2026
Source filing: View source filing
Reporting owner signature: /s/ Stefanie C. Fleischmann, as attorney-in-fact for Michael C. Bucella

Key filing fact

Michael C. Bucella filed Form 4 for TERAWULF INC. (WULF) on 25 Jun 2026.

Key facts

This page summarizes Michael C. Bucella's Form 4 filing for TERAWULF INC. (WULF).
3 reported transactions and 2 derivative rows are listed below.
Accepted by SEC: 25 Jun 2026, 17:16.

Change

Previous filing in this sequence was filed on 09 Apr 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 0001915351 Primary reporting owner

Bucella Michael C.

Relationship: Director
Address: C/O TERAWULF INC., 9 FEDERAL STREET, EASTON
Signature: /s/ Stefanie C. Fleischmann, as attorney-in-fact for Michael C. Bucella
Signature date: 25 Jun 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: +56,023
Change %: +20%
Price
Shares after: 337,808
Date: 23 Jun 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: -56,023
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 23 Jun 2026
Ownership: Direct
Underlying class: Common stock, $0.001 par value per share
Underlying amount: 56,023
Exercise price
Footnotes: F2, F3

WULF transaction Derivative

Restricted Stock Units

Award

Transaction value
Shares: +6,950
Change %
Price: $0.000000^*
Shares after: 6,950
Date: 23 Jun 2026
Ownership: Direct
Underlying class: Common stock, $0.001 par value per share
Underlying amount: 6,950
Exercise price
Footnotes: F2, F4

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 4 footnotes

Footnote 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.

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 upon the first anniversary of June 23, 2025, subject to the Reporting Person's continued employment or service with the Issuer through such date.

Footnote 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.