Kerri M. Langlais - 01 Aug 2026 Form 4 Insider Report for TERAWULF INC. (WULF)

Reporting relationship: Chief Strategy Officer, Director
Issuer ticker: WULF
Reported as of: 01 Aug 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 03 Aug 2026, 21:05:41 UTC
Prior SEC filing: 20 May 2026
Source filing: View source filing
Reporting owner signature: /s/ Kerri M. Langlais

Key filing fact

Kerri M. Langlais filed Form 4 for TERAWULF INC. (WULF) on 03 Aug 2026.

Key facts

This page summarizes Kerri M. Langlais's Form 4 filing for TERAWULF INC. (WULF).
3 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 03 Aug 2026, 21:05.

Change

Previous filing in this sequence was filed on 20 May 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 0001877257 Primary reporting owner

Langlais Kerri M.

Relationship: Chief Strategy Officer, Director
Address: C/O TERAWULF INC., 9 FEDERAL STREET, EASTON
Signature: /s/ Kerri M. Langlais
Signature date: 03 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: +500,000
Change %: +12%
Price
Shares after: 4,656,881
Date: 01 Aug 2026
Ownership: Direct
Footnotes: F1

WULF transaction

Common stock, $0.001 par value per share

Disposed to Issuer

Transaction value
Shares: -276,500
Change %: -5.9%
Price
Shares after: 4,380,381
Date: 03 Aug 2026
Ownership: Direct
Footnotes: F2

WULF holding

Common stock, $0.001 par value per share

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 864,701
Date: 01 Aug 2026
Ownership: By Langlais Family 2021 GST Trust

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: -500,000
Change %: -33%
Price
Shares after: 1,000,000
Date: 01 Aug 2026
Ownership: Direct
Underlying class: Common stock, $0.001 par value per share
Underlying amount: 500,000
Exercise price
Footnotes: F3, 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 in accordance with their terms upon the first anniversary of August 1, 2025, as reflected in this Form 4, subject to the Reporting Person's continued employment or service with the Issuer through such date.

Footnote F2

The disposition is due to withholding to cover taxes, as a result of the Reporting Person's election of net settlement with regard to the vesting of restricted stock units, which vested on August 1, 2026, as reflected in this Form 4.

Footnote F3

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 F4

The restricted stock units vested upon the first anniversary of August 1, 2025, subject to the Reporting Person's continued employment or service with the Issuer through such date. The remaining restricted stock units will vest ratably upon the second and third anniversaries of August 1, 2025, respectively, subject to the Reporting Person's continued employment or service with the Issuer through each such date.