WULF

SEC source: 0001083301-26-000051 · wk-form4_1775771740.xml · nonDerivative · entry 1

Carter Walter E. · CIK 0001877260 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 302,427

F1 · price: Shares of common stock issued in lieu of cash retainers accrued since the beginning of the first fiscal quarter of 2026, at a price of $14.43 per share, the closing price as of March 31, 2026.

SEC source: 0001083301-26-000046 · wk-form4_1774483222.xml · nonDerivative · entry 3

Prager Paul B. · CIK 0001877255 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 216,700

F3 · price: The Price reported in Column 4 is a weighted average price. The shares of Common Stockwere sold in multiple transactions at a price ranging from $17.5500 to $17.7500, inclusive. The reporting person undertakes to provide to the staff of the Securities and Exchange Commission, to any security holder of TeraWulf Inc. or to TeraWulf Inc., upon request, full information regarding the number of shares of Common Stock sold at each separate price within the range set forth above.

SEC source: 0001083301-26-000046 · wk-form4_1774483222.xml · nonDerivative · entry 2

Prager Paul B. · CIK 0001877255 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 220,500

F2 · price: The Price reported in Column 4 is a weighted average price. The shares of Common Stock were sold in multiple transactions at a price ranging from $16.5300 to $17.5200, inclusive. The reporting person undertakes to provide to the staff of the Securities and Exchange Commission, to any security holder of TeraWulf Inc. or to TeraWulf Inc., upon request, full information regarding the number of shares of Common Stock sold at each separate price within the range set forth above.

SEC source: 0001083301-26-000046 · wk-form4_1774483222.xml · nonDerivative · entry 1

Prager Paul B. · CIK 0001877255 · Director · Chief Executive Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 354,200

F1 · price: The Price reported in Column 4 is a weighted average price. The shares of common stock, par value $0.001 per share ("Common Stock") were sold in multiple transactions at a price ranging from $15.6500 to $16.6400, inclusive. The reporting person undertakes to provide to the staff of the Securities and Exchange Commission, to any security holder of TeraWulf Inc. or to TeraWulf Inc., upon request, full information regarding the number of shares of Common Stock sold at each separate price within the range set forth above.

SEC source: 0001083301-26-000044 · wk-form4_1774047958.xml · nonDerivative · entry 1

Bucella Michael C. · CIK 0001915351 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 280,052

SEC source: 0001083301-26-000042 · wk-form4_1773969833.xml · nonDerivative · entry 3

Bucella Michael C. · CIK 0001915351 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 278,387

SEC source: 0001083301-26-000042 · wk-form4_1773969833.xml · nonDerivative · entry 2

Bucella Michael C. · CIK 0001915351 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 276,717

SEC source: 0001083301-26-000042 · wk-form4_1773969833.xml · nonDerivative · entry 1

Bucella Michael C. · CIK 0001915351 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 275,136

SEC source: 0001083301-26-000041 · wk-form4_1773969680.xml · nonDerivative · entry 2

Fleury Patrick · CIK 0001652256 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By Teton Rough Riders Mining LLC

Disclosed balance after: 0

F1 · ownership.nature: By Teton Rough Riders Mining LLC. The Reporting Person is a managing manager of Teton Rough Riders Mining LLC and, as a result, may be deemed to beneficially own the shares of the Issuer's common stock, $0.001 par value per share (the "Common Stock") held by Teton Rough Riders Mining LLC. The Reporting Person disclaims beneficial ownership of such shares of Common Stock except to the extent of his pecuniary interest therein, and the inclusion of such shares of Common Stock in this report shall not be deemed an admission of beneficial ownership of all of the reported shares of the Common Stock for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

SEC source: 0001083301-26-000041 · wk-form4_1773969680.xml · nonDerivative · entry 1

Fleury Patrick · CIK 0001652256 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,205,000

SEC source: 0001083301-26-000038 · wk-form4_1773438550.xml · nonDerivative · entry 1

Bucella Michael C. · CIK 0001915351 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 273,552

SEC source: 0001083301-26-000035 · wk-form4_1773099076.xml · nonDerivative · entry 3

Bucella Michael C. · CIK 0001915351 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 272,214

SEC source: 0001083301-26-000035 · wk-form4_1773099076.xml · nonDerivative · entry 2

Bucella Michael C. · CIK 0001915351 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 271,462

SEC source: 0001083301-26-000035 · wk-form4_1773099076.xml · nonDerivative · entry 1

Bucella Michael C. · CIK 0001915351 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 270,783

SEC source: 0001083301-26-000033 · wk-form4_1772663680.xml · nonDerivative · entry 1

Bucella Michael C. · CIK 0001915351 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 270,129

SEC source: 0001083301-26-000019 · wk-form4_1768611198.xml · derivative · entry 1

Tanimoto William Joseph · CIK 0002074786 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,419

Underlying: Common stock, $0.001 par value per share · 9,419 shares

Expires not disclosed

F1 · derivative.exercise_price: Each Restricted Stock Unit represents a contingent right to receive one share of the Issuer's common stock, $0.001 par value per share.

F2 · derivative.exercise_date: The restricted stock units vest in three equal installments upon each of the first three anniversaries of January 14, 2026, subject to the Reporting Person's continued employment or service with the Issuer through each such date.

F2 · derivative.expiration_date: The restricted stock units vest in three equal installments upon each of the first three anniversaries of January 14, 2026, subject to the Reporting Person's continued employment or service with the Issuer through each such date.

SEC source: 0001083301-26-000016 · wk-form4_1768008191.xml · derivative · entry 3

Tanimoto William Joseph · CIK 0002074786 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,666

Underlying: Common stock, $0.001 par value per share · 16,667 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each Restricted Stock Unit represents a contingent right to receive one share of the Issuer's common stock, $0.001 par value per share.

F4 · price: The restricted stock units vested upon the second anniversary of January 9, 2024, subject to the Reporting Person's continued employment or service with the Issuer through each such date. The remaining restricted stock units will vest upon the third anniversary of January 9, 2024, subject to the Reporting Person's continued employment or service with the Issuer through each such date.

F4 · derivative.exercise_date: The restricted stock units vested upon the second anniversary of January 9, 2024, subject to the Reporting Person's continued employment or service with the Issuer through each such date. The remaining restricted stock units will vest upon the third anniversary of January 9, 2024, subject to the Reporting Person's continued employment or service with the Issuer through each such date.

F4 · derivative.expiration_date: The restricted stock units vested upon the second anniversary of January 9, 2024, subject to the Reporting Person's continued employment or service with the Issuer through each such date. The remaining restricted stock units will vest upon the third anniversary of January 9, 2024, subject to the Reporting Person's continued employment or service with the Issuer through each such date.

SEC source: 0001083301-26-000016 · wk-form4_1768008191.xml · nonDerivative · entry 2

Tanimoto William Joseph · CIK 0002074786 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 38,898

F2 · price: 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 January 9, 2026, as reflected in this Form 4.

SEC source: 0001083301-26-000016 · wk-form4_1768008191.xml · nonDerivative · entry 1

Tanimoto William Joseph · CIK 0002074786 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 44,194

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: The Reporting Person received restricted stock units which vested in accordance with their terms upon the second anniversary of January 9, 2024, as reflected in this Form 4, subject to the Reporting Person's continued employment or service with the Issuer through such date.

SEC source: 0001083301-26-000012 · wk-form4_1767407555.xml · derivative · entry 2

Langlais Kerri M. · CIK 0001877257 · Director · Chief Strategy Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,308,216

Underlying: Common stock, $0.001 par value per share · 1,308,216 shares

Expires not disclosed

F3 · derivative.exercise_price: Each performance stock unit represents a contingent right to receive one share of the Issuer's Common Stock.

F4 · derivative.exercise_date: The performance stock units will vest in accordance with their terms upon the achievement of specified performance goals between the grant date and the third anniversary of January 2, 2026, subject to the Reporting Person's continued employment or service with the Issuer through each such date.

F4 · derivative.expiration_date: The performance stock units will vest in accordance with their terms upon the achievement of specified performance goals between the grant date and the third anniversary of January 2, 2026, subject to the Reporting Person's continued employment or service with the Issuer through each such date.

SEC source: 0001083301-26-000012 · wk-form4_1767407555.xml · derivative · entry 1

Langlais Kerri M. · CIK 0001877257 · Director · Chief Strategy Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,616,431

Underlying: Common stock, $0.001 par value per share · 2,616,431 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock, $0.001 par value per share ("Common Stock").

F2 · derivative.exercise_date: One-third (1/3rd) of the restricted stock units shall vest upon each of the first three anniversaries of January 2, 2026, subject to the Reporting Person's continued employment or service with the Issuer through each such date.

F2 · derivative.expiration_date: One-third (1/3rd) of the restricted stock units shall vest upon each of the first three anniversaries of January 2, 2026, subject to the Reporting Person's continued employment or service with the Issuer through each such date.

SEC source: 0001083301-26-000011 · wk-form4_1767407536.xml · derivative · entry 2

Fleury Patrick · CIK 0001652256 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,308,216

Underlying: Common stock, $0.001 par value per share · 1,308,216 shares

Expires not disclosed

F3 · derivative.exercise_price: Each performance stock unit represents a contingent right to receive one share of the Issuer's Common Stock.

F4 · derivative.exercise_date: The performance stock units will vest in accordance with their terms upon the achievement of specified performance goals between the grant date and the third anniversary of January 2, 2026, subject to the Reporting Person's continued employment or service with the Issuer through each such date.

F4 · derivative.expiration_date: The performance stock units will vest in accordance with their terms upon the achievement of specified performance goals between the grant date and the third anniversary of January 2, 2026, subject to the Reporting Person's continued employment or service with the Issuer through each such date.

SEC source: 0001083301-26-000011 · wk-form4_1767407536.xml · derivative · entry 1

Fleury Patrick · CIK 0001652256 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,616,431

Underlying: Common stock, $0.001 par value per share · 2,616,431 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock, $0.001 par value per share ("Common Stock").

F2 · derivative.exercise_date: One-third (1/3rd) of the restricted stock units shall vest upon each of the first three anniversaries of January 2, 2026, subject to the Reporting Person's continued employment or service with the Issuer through each such date.

F2 · derivative.expiration_date: One-third (1/3rd) of the restricted stock units shall vest upon each of the first three anniversaries of January 2, 2026, subject to the Reporting Person's continued employment or service with the Issuer through each such date.

SEC source: 0001083301-26-000010 · wk-form4_1767407519.xml · derivative · entry 2

Khan Nazar M. · CIK 0001877476 · Director · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,270,539

Underlying: Common stock, $0.001 par value per share · 3,270,539 shares

Expires not disclosed

F3 · derivative.exercise_price: Each performance stock unit represents a contingent right to receive one share of the Issuer's Common Stock.

F4 · derivative.exercise_date: The performance stock units will vest in accordance with their terms upon the achievement of specified performance goals between the grant date and the third anniversary of January 2, 2026, subject to the Reporting Person's continued employment or service with the Issuer through each such date.

F4 · derivative.expiration_date: The performance stock units will vest in accordance with their terms upon the achievement of specified performance goals between the grant date and the third anniversary of January 2, 2026, subject to the Reporting Person's continued employment or service with the Issuer through each such date.

SEC source: 0001083301-26-000010 · wk-form4_1767407519.xml · derivative · entry 1

Khan Nazar M. · CIK 0001877476 · Director · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,541,078

Underlying: Common stock, $0.001 par value per share · 6,541,078 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock, $0.001 par value per share ("Common Stock").

F2 · derivative.exercise_date: One-third (1/3rd) of the restricted stock units shall vest upon each of the first three anniversaries of January 2, 2026, subject to the Reporting Person's continued employment or service with the Issuer through each such date.

F2 · derivative.expiration_date: One-third (1/3rd) of the restricted stock units shall vest upon each of the first three anniversaries of January 2, 2026, subject to the Reporting Person's continued employment or service with the Issuer through each such date.

SEC source: 0001083301-26-000009 · wk-form4_1767407498.xml · derivative · entry 2

Prager Paul B. · CIK 0001877255 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,924,647

Underlying: Common stock, $0.001 par value per share · 3,924,647 shares

Expires not disclosed

F3 · derivative.exercise_price: Each performance stock unit represents a contingent right to receive one share of the Issuer's Common Stock.

F4 · derivative.exercise_date: The performance stock units will vest in accordance with their terms upon the achievement of specified performance goals between the grant date and the third anniversary of January 2, 2026, subject to the Reporting Person's continued employment or service with the Issuer through each such date.

F4 · derivative.expiration_date: The performance stock units will vest in accordance with their terms upon the achievement of specified performance goals between the grant date and the third anniversary of January 2, 2026, subject to the Reporting Person's continued employment or service with the Issuer through each such date.

SEC source: 0001083301-26-000009 · wk-form4_1767407498.xml · derivative · entry 1

Prager Paul B. · CIK 0001877255 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,849,294

Underlying: Common stock, $0.001 par value per share · 7,849,294 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock, $0.001 par value per share ("Common Stock").

F2 · derivative.exercise_date: One-third (1/3rd) of the restricted stock units shall vest upon each of the first three anniversaries of January 2, 2026, subject to the Reporting Person's continued employment or service with the Issuer through each such date.

F2 · derivative.expiration_date: One-third (1/3rd) of the restricted stock units shall vest upon each of the first three anniversaries of January 2, 2026, subject to the Reporting Person's continued employment or service with the Issuer through each such date.

SEC source: 0001083301-26-000014 · wk-form4_1767660990.xml · derivative · entry 3

Tanimoto William Joseph · CIK 0002074786 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,000

Underlying: Common stock, $0.001 par value per share · 5,000 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each Restricted Stock Unit represents a contingent right to receive one share of the Issuer's common stock, $0.001 par value per share.

F4 · price: The restricted stock units vested upon the first anniversary of January 2, 2025, subject to the Reporting Person's continued employment or service with the Issuer through each such date. The remaining restricted stock units will vest upon the second and third anniversaries of January 2, 2025, subject to the Reporting Person's continued employment or service with the Issuer through each such date.

F4 · derivative.exercise_date: The restricted stock units vested upon the first anniversary of January 2, 2025, subject to the Reporting Person's continued employment or service with the Issuer through each such date. The remaining restricted stock units will vest upon the second and third anniversaries of January 2, 2025, subject to the Reporting Person's continued employment or service with the Issuer through each such date.

F4 · derivative.expiration_date: The restricted stock units vested upon the first anniversary of January 2, 2025, subject to the Reporting Person's continued employment or service with the Issuer through each such date. The remaining restricted stock units will vest upon the second and third anniversaries of January 2, 2025, subject to the Reporting Person's continued employment or service with the Issuer through each such date.

SEC source: 0001083301-26-000014 · wk-form4_1767660990.xml · nonDerivative · entry 2

Tanimoto William Joseph · CIK 0002074786 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,527

F2 · price: 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 January 2, 2026, as reflected in this Form 4.

SEC source: 0001083301-26-000014 · wk-form4_1767660990.xml · nonDerivative · entry 1

Tanimoto William Joseph · CIK 0002074786 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,251

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: The Reporting Person received restricted stock units which vested in accordance with their terms upon the first anniversary of January 2, 2025, as reflected in this Form 4, subject to the Reporting Person's continued employment or service with the Issuer through such date.

SEC source: 0001083301-26-000008 · wk-form4_1767407461.xml · nonDerivative · entry 1

Prager Lisa A. · CIK 0001877256 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 252,741

F1 · price: Shares of common stock issued in lieu of cash retainers accrued since the beginning of the fourth fiscal quarter of 2025, at a price of $11.49 per share, the closing price as of December 31, 2025.

SEC source: 0001083301-26-000007 · wk-form4_1767407440.xml · nonDerivative · entry 1

Carter Walter E. · CIK 0001877260 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 300,261

F1 · price: Shares of common stock issued in lieu of cash retainers accrued since the beginning of the fourth fiscal quarter of 2025, at a price of $11.49 per share, the closing price as of December 31, 2025.

SEC source: 0001083301-26-000065 · wk-form4_1776389312.xml · derivative · entry 8

Prager Paul B. · CIK 0001877255 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By Allin WULF LLC

Disclosed balance after: 0

Underlying: Common stock, $0.001 par value per share · 141,726 shares

Expires 2025-12-31

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Represents shares of common stock, $0.001 par value per share, of the Issuer ("Common Stock") received upon exercise of 141,726 warrants to purchase 141,726 shares of Common Stock ("Warrants"), at a price of $0.01 per share for an aggregate purchase price of $1,417.26. The Warrants were acquired on October 20, 2023 via a distribution from NovaWulf Digital Private Fund, LLC.

F1 · price: Represents shares of common stock, $0.001 par value per share, of the Issuer ("Common Stock") received upon exercise of 141,726 warrants to purchase 141,726 shares of Common Stock ("Warrants"), at a price of $0.01 per share for an aggregate purchase price of $1,417.26. The Warrants were acquired on October 20, 2023 via a distribution from NovaWulf Digital Private Fund, LLC.

SEC source: 0001083301-26-000065 · wk-form4_1776389312.xml · nonDerivative · entry 1

Prager Paul B. · CIK 0001877255 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By Allin Wulf LLC

Disclosed balance after: 141,726

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Represents shares of common stock, $0.001 par value per share, of the Issuer ("Common Stock") received upon exercise of 141,726 warrants to purchase 141,726 shares of Common Stock ("Warrants"), at a price of $0.01 per share for an aggregate purchase price of $1,417.26. The Warrants were acquired on October 20, 2023 via a distribution from NovaWulf Digital Private Fund, LLC.

F2 · ownership.nature: By Allin WULF LLC ("Allin"). The Reporting Person is the sole manager of Allin and, as a result, may be deemed to beneficially own the shares of the Common Stock held by Allin. The Reporting Person disclaims beneficial ownership of such shares of the Common Stock except to the extent of his pecuniary interest therein, and the inclusion of such shares of the Common Stock in this report shall not be deemed an admission of beneficial ownership of all of the reported shares of the Common Stock for purposes of Section 16 of the Exchange Act, or for any other purpose.

SEC source: 0001083301-25-000123 · wk-form4_1766529601.xml · nonDerivative · entry 3

Prager Paul B. · CIK 0001877255 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · By Beowulf E&D Holdings Inc.

Disclosed balance after: 4,415,852

F1 · price: Three million shares of common stock, par value $0.001 per share ("Common Stock") were contributed in the aggregate to the Riesling Goods and Services Trust for no consideration by the Reporting Person (447,000), Riesling Power LLC (2,000,000) and Beowulf E&D Holdings Inc. (553,000).

F3 · ownership.nature: By Beowulf E&D Holdings Inc. ("E&D Holdings"). The Reporting Person is the sole manager of E&D Holdings and, as a result, may be deemed to beneficially own the shares of the Common Stock held by E&D Holdings. The Reporting Person disclaims beneficial ownership of such shares of the Common Stock except to the extent of his pecuniary interest therein, and the inclusion of such shares of the Common Stock in this report shall not be deemed an admission of beneficial ownership of all of the reported shares of the Common Stock for purposes of Section 16 of the Exchange Act, or for any other purpose

SEC source: 0001083301-25-000123 · wk-form4_1766529601.xml · nonDerivative · entry 2

Prager Paul B. · CIK 0001877255 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · By Riesling Power LLC

Disclosed balance after: 33,554,688

F1 · price: Three million shares of common stock, par value $0.001 per share ("Common Stock") were contributed in the aggregate to the Riesling Goods and Services Trust for no consideration by the Reporting Person (447,000), Riesling Power LLC (2,000,000) and Beowulf E&D Holdings Inc. (553,000).

F2 · ownership.nature: By Riesling Power LLC ("Riesling Power"). The Paul B. Prager Revocable Trust ("Prager Revocable Trust") is the sole member of Riesling Power. The Reporting Person is the sole trustee of the Prager Revocable Trust and may be deemed to have the power to direct the voting and disposition of the Common Stock beneficially owned by the Prager Revocable Trust. Accordingly, pursuant to the regulations promulgated under Section 13(d) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), Mr. Paul B. Prager may be deemed to be a beneficial owner of the shares of Common Stock held for the account of the Prager Revocable Trust .

SEC source: 0001083301-25-000123 · wk-form4_1766529601.xml · nonDerivative · entry 1

Prager Paul B. · CIK 0001877255 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 491,700

F1 · price: Three million shares of common stock, par value $0.001 per share ("Common Stock") were contributed in the aggregate to the Riesling Goods and Services Trust for no consideration by the Reporting Person (447,000), Riesling Power LLC (2,000,000) and Beowulf E&D Holdings Inc. (553,000).

SEC source: 0001083301-25-000121 · wk-form4_1766445231.xml · nonDerivative · entry 1

Khan Nazar M. · CIK 0001877476 · Director · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,324,023

F1 · price: On December 22, 2025, the Reporting Person made a gift of 180,000 shares of common stock, par value $0.01 per share ("Common Stock") to a charitable organization.

SEC source: 0001083301-25-000118 · wk-form4_1765496311.xml · derivative · entry 3

Bucella Michael C. · CIK 0001915351 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common stock, $0.001 par value per share · 35,487 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: As of the date of the event requiring the filing of this report, the 250 shares of Series A Convertible Preferred Stock (the "Preferred Stock") were converted into 35,487 shares of common stock, par value $0.001 per share, via a mandatory conversion by the Issuer of all of the shares of its Preferred Stock pursuant to Sec. 10(c) of the Certificate of Designations of the Preferred Stock, at a conversion price of $10.00 per share of Preferred Stock, as previously disclosed on the Issuer's current report on Form 8-K filed on November 25, 2025.

F1 · derivative.exercise_date: As of the date of the event requiring the filing of this report, the 250 shares of Series A Convertible Preferred Stock (the "Preferred Stock") were converted into 35,487 shares of common stock, par value $0.001 per share, via a mandatory conversion by the Issuer of all of the shares of its Preferred Stock pursuant to Sec. 10(c) of the Certificate of Designations of the Preferred Stock, at a conversion price of $10.00 per share of Preferred Stock, as previously disclosed on the Issuer's current report on Form 8-K filed on November 25, 2025.

F1 · derivative.expiration_date: As of the date of the event requiring the filing of this report, the 250 shares of Series A Convertible Preferred Stock (the "Preferred Stock") were converted into 35,487 shares of common stock, par value $0.001 per share, via a mandatory conversion by the Issuer of all of the shares of its Preferred Stock pursuant to Sec. 10(c) of the Certificate of Designations of the Preferred Stock, at a conversion price of $10.00 per share of Preferred Stock, as previously disclosed on the Issuer's current report on Form 8-K filed on November 25, 2025.

SEC source: 0001083301-25-000118 · wk-form4_1765496311.xml · nonDerivative · entry 1

Bucella Michael C. · CIK 0001915351 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 262,780

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: As of the date of the event requiring the filing of this report, the 250 shares of Series A Convertible Preferred Stock (the "Preferred Stock") were converted into 35,487 shares of common stock, par value $0.001 per share, via a mandatory conversion by the Issuer of all of the shares of its Preferred Stock pursuant to Sec. 10(c) of the Certificate of Designations of the Preferred Stock, at a conversion price of $10.00 per share of Preferred Stock, as previously disclosed on the Issuer's current report on Form 8-K filed on November 25, 2025.

SEC source: 0001083301-25-000116 · wk-form4_1765496234.xml · derivative · entry 2

Pincus Steven T. · CIK 0001877629 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common stock, $0.001 par value per share · 7,097 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: As of the date of the event requiring the filing of this report, the 50 shares of Series A Convertible Preferred Stock (the "Preferred Stock") were converted into 7,097 shares of common stock, par value $0.001 per share, via a mandatory conversion by the Issuer of all of the shares of its Preferred Stock pursuant to Sec. 10(c) of the Certificate of Designations of the Preferred Stock, at a conversion price of $10.00 per share of Preferred Stock, as previously disclosed on the Issuer's current report on Form 8-K filed on November 25, 2025.

F1 · derivative.exercise_date: As of the date of the event requiring the filing of this report, the 50 shares of Series A Convertible Preferred Stock (the "Preferred Stock") were converted into 7,097 shares of common stock, par value $0.001 per share, via a mandatory conversion by the Issuer of all of the shares of its Preferred Stock pursuant to Sec. 10(c) of the Certificate of Designations of the Preferred Stock, at a conversion price of $10.00 per share of Preferred Stock, as previously disclosed on the Issuer's current report on Form 8-K filed on November 25, 2025.

F1 · derivative.expiration_date: As of the date of the event requiring the filing of this report, the 50 shares of Series A Convertible Preferred Stock (the "Preferred Stock") were converted into 7,097 shares of common stock, par value $0.001 per share, via a mandatory conversion by the Issuer of all of the shares of its Preferred Stock pursuant to Sec. 10(c) of the Certificate of Designations of the Preferred Stock, at a conversion price of $10.00 per share of Preferred Stock, as previously disclosed on the Issuer's current report on Form 8-K filed on November 25, 2025.

SEC source: 0001083301-25-000116 · wk-form4_1765496234.xml · nonDerivative · entry 1

Pincus Steven T. · CIK 0001877629 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 336,365

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: As of the date of the event requiring the filing of this report, the 50 shares of Series A Convertible Preferred Stock (the "Preferred Stock") were converted into 7,097 shares of common stock, par value $0.001 per share, via a mandatory conversion by the Issuer of all of the shares of its Preferred Stock pursuant to Sec. 10(c) of the Certificate of Designations of the Preferred Stock, at a conversion price of $10.00 per share of Preferred Stock, as previously disclosed on the Issuer's current report on Form 8-K filed on November 25, 2025.

SEC source: 0001083301-25-000114 · wk-form4_1765496075.xml · derivative · entry 3

Langlais Kerri M. · CIK 0001877257 · Director · Chief Strategy Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common stock, $0.001 par value per share · 35,629 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: As of the date of the event requiring the filing of this report, the 251 shares of Series A Convertible Preferred Stock (the "Preferred Stock") were converted into 35,629 shares of common stock, par value $0.001 per share, via a mandatory conversion by the Issuer of all of the shares of its Preferred Stock pursuant to Sec. 10(c) of the Certificate of Designations of the Preferred Stock, at a conversion price of $10.00 per share of Preferred Stock, as previously disclosed on the Issuer's current report on Form 8-K filed on November 25, 2025.

F1 · derivative.exercise_date: As of the date of the event requiring the filing of this report, the 251 shares of Series A Convertible Preferred Stock (the "Preferred Stock") were converted into 35,629 shares of common stock, par value $0.001 per share, via a mandatory conversion by the Issuer of all of the shares of its Preferred Stock pursuant to Sec. 10(c) of the Certificate of Designations of the Preferred Stock, at a conversion price of $10.00 per share of Preferred Stock, as previously disclosed on the Issuer's current report on Form 8-K filed on November 25, 2025.

F1 · derivative.expiration_date: As of the date of the event requiring the filing of this report, the 251 shares of Series A Convertible Preferred Stock (the "Preferred Stock") were converted into 35,629 shares of common stock, par value $0.001 per share, via a mandatory conversion by the Issuer of all of the shares of its Preferred Stock pursuant to Sec. 10(c) of the Certificate of Designations of the Preferred Stock, at a conversion price of $10.00 per share of Preferred Stock, as previously disclosed on the Issuer's current report on Form 8-K filed on November 25, 2025.

SEC source: 0001083301-25-000114 · wk-form4_1765496075.xml · nonDerivative · entry 1

Langlais Kerri M. · CIK 0001877257 · Director · Chief Strategy Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,572,105

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: As of the date of the event requiring the filing of this report, the 251 shares of Series A Convertible Preferred Stock (the "Preferred Stock") were converted into 35,629 shares of common stock, par value $0.001 per share, via a mandatory conversion by the Issuer of all of the shares of its Preferred Stock pursuant to Sec. 10(c) of the Certificate of Designations of the Preferred Stock, at a conversion price of $10.00 per share of Preferred Stock, as previously disclosed on the Issuer's current report on Form 8-K filed on November 25, 2025.

SEC source: 0001083301-25-000102 · wk-form4_1763773311.xml · nonDerivative · entry 1

Prager Paul B. · CIK 0001877255 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · By Riesling Power LLC

Disclosed balance after: 35,554,688

F1 · price: Three million shares of common stock, par value $0.001 per share ("Common Stock") were contributed to the Riesling Goods and Services Trust for no consideration.

F2 · ownership.nature: By Riesling Power LLC ("Riesling Power"). The Paul B. Prager Revocable Trust ("Prager Revocable Trust") is the sole member of Riesling Power. The Reporting Person is the sole trustee of the Prager Revocable Trust and may be deemed to have the power to direct the voting and disposition of the Common Stock beneficially owned by the Prager Revocable Trust. Accordingly, pursuant to the regulations promulgated under Section 13(d) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), Mr. Paul B. Prager may be deemed to be a beneficial owner of the shares of Common Stock held for the account of the Prager Revocable Trust .

SEC source: 0001083301-25-000118 · wk-form4_1765496311.xml · nonDerivative · entry 2

Bucella Michael C. · CIK 0001915351 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 266,958

F2 · price: The price reported in Column 4 is a weighted average price. The shares were purchased in multiple transactions at prices ranging from $11.80 - $12.03, inclusive. The Reporting Person undertakes to provide to the staff of the Securities and Exchange Commission, to any security holder of the Issuer, or to the Issuer, upon request, full information regarding the number of shares purchased at each separate price within the range set forth above.

SEC source: 0001083301-25-000089 · wk-form4_1760744770.xml · nonDerivative · entry 1

Prager Paul B. · CIK 0001877255 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By Beowulf E&D Holdings Inc.

Disclosed balance after: 4,968,852

F1 · price: The shares of common stock, par value $0.01 per share ("Common Stock") were issued to Beowulf E&D Holdings Inc. ("E&D Holdings") as earnout consideration pursuant to that certain Membership Interest Purchase Agreement, dated as of May 21, 2025, among E&D Holdings, TeraCub Inc. and the issuer ("MIPA"). The earnout was trigged at the closing of the issuer's private offering of $1 billion convertible notes on August 21, 2025, but the parties to the MIPA agreed to defer the share issuance until the issuer received stockholder approval to amend its certificate of incorporation to increase the number of its authorized shares of Common Stock.

F2 · ownership.nature: By E&D Holdings. The Paul B. Prager Revocable Trust ("Prager Revocable Trust") is the sole shareholder of E&D Holdings. The Reporting Person is the sole trustee of the Prager Revocable Trust and may be deemed to have the power to direct the voting and disposition of the Common Stock beneficially owned by the Prager Revocable Trust. Accordingly, pursuant to the regulations promulgated under Section 13(d) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), Mr. Paul B. Prager may be deemed to be a beneficial owner of the shares of Common Stock held for the account of the Prager Revocable Trust.

SEC source: 0001083301-25-000091 · wk-form4_1760996253.xml · derivative · entry 1

Tanimoto William Joseph · CIK 0002074786 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 30,000

Underlying: Common stock, $0.001 par value per share · 30,000 shares

Expires not disclosed

F1 · derivative.exercise_price: Each Restricted Stock Unit represents a contingent right to receive one share of the Issuer's common stock, $0.001 par value per share.

F2 · price: The restricted stock units vest in three equal installments upon each of the first three anniversaries of October 16, 2025, subject to the Reporting Person's continued employment or service with the Issuer through each such date.

F2 · derivative.exercise_date: The restricted stock units vest in three equal installments upon each of the first three anniversaries of October 16, 2025, subject to the Reporting Person's continued employment or service with the Issuer through each such date.

F2 · derivative.expiration_date: The restricted stock units vest in three equal installments upon each of the first three anniversaries of October 16, 2025, subject to the Reporting Person's continued employment or service with the Issuer through each such date.

SEC source: 0001083301-25-000085 · wk-form4_1759448486.xml · nonDerivative · entry 1

Carter Walter E. · CIK 0001877260 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 297,541

F1 · price: Shares of common stock issued in lieu of cash retainers accrued since the beginning of the third fiscal quarter of 2025, at a price of $11.42 per share, the closing price as of September 30, 2025.

SEC source: 0001083301-25-000084 · wk-form4_1759448467.xml · nonDerivative · entry 1

Prager Paul B. · CIK 0001877255 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By Riesling Power LLC

Disclosed balance after: 39,654,688

F1 · price: The shares of common stock, par value $0.001 per share ("Common Stock") were issued to Riesling Power LLC ("Riesling Power") as prepaid rent pursuant to that certain lease agreement, dated as of October 12, 2025, among Lake Hawkeye LLC, a wholly owned subsidiary of TeraWulf Inc., Cayuga Operating Company LLC and Riesling Power.

F2 · ownership.nature: By Riesling Power. The Paul B. Prager Revocable Trust ("Prager Revocable Trust") is the sole member of Riesling Power. The Reporting Person is the sole trustee of the Prager Revocable Trust and may be deemed to have the power to direct the voting and disposition of the Common Stock beneficially owned by the Prager Revocable Trust. Accordingly, pursuant to the regulations promulgated under Section 13(d) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), Mr. Paul B. Prager may be deemed to be a beneficial owner of the shares of Common Stock held for the account of the Prager Revocable Trust .