Here are the Form 4 insider transactions from TeraWulf Inc. (WULF) in our archive over the last 12 months, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A Form 4 covers the transactions officers, directors and large holders report, so if you follow WULF and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full WULF filings page.
Terawulf Inc. director Michael C. Bucella bought additional company stock in the open market. On this transaction, he purchased 1,338 shares of common stock at a price of $14.91 per share. Following the purchase, he directly owns 273,552 shares of Terawulf common stock.
TeraWulf Inc. director Michael C. Bucella reported a series of open-market purchases of the company’s common stock. He bought 654 shares on March 5, 2026 at $15.31 per share, 679 shares on March 6, 2026 at $14.80 per share, and 752 shares on March 9, 2026 at $13.31 per share. After these transactions, he directly owned 272,214 shares of TeraWulf common stock.
TERAWULF INC. director Michael C. Bucella reported an open-market purchase of 3,171 shares of common stock at $15.78 per share. After this transaction, he directly owns a total of 270,129 TERAWULF common shares, increasing his personal stake in the company.
TeraWulf Inc. Chief Accounting Officer William J. Tanimoto reported an equity award of 9,419 restricted stock units (RSUs) on January 14, 2026. Each RSU represents a contingent right to receive one share of TeraWulf common stock with a par value of $0.001 per share. The RSUs were granted at a price of $0 and are reported as directly owned. The award vests in three equal installments on each of the first three anniversaries of January 14, 2026, as long as Tanimoto continues employment or service with the company through each vesting date.
TeraWulf Inc. Chief Accounting Officer William Joseph Tanimoto reported equity award activity involving company stock. On January 9, 2026, 16,667 restricted stock units converted into an equal number of common shares as they vested on the second anniversary of a January 9, 2024 grant, contingent on continued employment.
On the same date, 5,296 common shares were automatically disposed of to cover taxes from Mr. Tanimoto’s net settlement election for the RSU vesting. After these transactions, he directly held 38,898 shares of common stock and 16,666 restricted stock units, with the remaining units scheduled to vest on the third anniversary of January 9, 2024, subject to continued service.
TeraWulf Inc. director Michael C. Bucella reported two recent equity transactions in the company’s stock. On December 9, 2025, 250 shares of Series A Convertible Preferred Stock were mandatorily converted into 35,487 shares of common stock under the issuer’s certificate of designations at a conversion price of $10.00 per preferred share.
On November 13, 2025, he purchased 4,178 shares of TeraWulf common stock in open-market transactions at a weighted average price of $12.01 per share, with individual trade prices ranging from $11.80 to $12.03. These transactions increase his direct equity ownership in the company as a director.
TeraWulf Inc. director Steven T. Pincus had 50 shares of Series A Convertible Preferred Stock mandatorily converted by the company into 7,097 shares of common stock on 12/09/2025, as part of a mandatory conversion of all preferred shares.
After this transaction, he beneficially owns 336,365 shares of TeraWulf common stock directly and no longer holds any Series A Convertible Preferred Stock. The conversion price for the preferred stock was $10.00 per share of Preferred Stock, as previously disclosed by the company.
Terawulf Inc. insider Kerri M. Langlais, a director and Chief Strategy Officer, reported a mandatory conversion of preferred stock into common shares.
On 12/09/2025, 251 shares of Series A Convertible Preferred Stock were converted into 35,629 shares of common stock under the issuer’s mandatory conversion of all Preferred Stock. After this transaction, Langlais beneficially owned 3,572,105 Terawulf common shares directly and 864,701 shares indirectly through the Langlais Family 2021 GST Trust.
TeraWulf Inc. insider Paul B. Prager, the company’s Chief Executive Officer, director, and 10% owner, reported an internal reallocation of his holdings in TeraWulf common stock. On 11/20/2025, three million shares of common stock were contributed from his affiliate Riesling Power LLC to the Riesling Goods and Services Trust for no consideration, which is shown as a disposition of 3,000,000 shares in the filing. After this and related internal transfers, Prager reports beneficial ownership of TeraWulf shares held directly and through several entities, including 35,554,688 shares indirectly through Riesling Power LLC, 4,968,852 shares through Beowulf E&D Holdings Inc., 1,100,000 shares through Stammtisch Investments LLC, 938,700 shares held directly, and 5,000 shares through Heorot Power Holdings LLC. The filing notes these entity holdings may be attributed to him under beneficial ownership rules, while he disclaims ownership beyond his economic interest.