Langlais Kerri M.

SEC source: 0001104659-23-098662 · tm2325543-2_4seq1.xml · derivative · entry 3

Langlais Kerri M. · CIK 0001877257 · Chief Strategy Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 400,000

Underlying: Common Stock · 400,000 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.

F2 · 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.

F1 · derivative.exercise_date: The restricted stock units vest in two equal installments upon each of the first two six-month anniversaries of March 4, 2023, subject to the Reporting Person's continued employment or service with the Issuer through each such date.

F1 · derivative.expiration_date: The restricted stock units vest in two equal installments upon each of the first two six-month anniversaries of March 4, 2023, subject to the Reporting Person's continued employment or service with the Issuer through each such date.

SEC source: 0001104659-23-098662 · tm2325543-2_4seq1.xml · nonDerivative · entry 1

Langlais Kerri M. · CIK 0001877257 · Chief Strategy Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,903,499

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 restricted stock units vest in two equal installments upon each of the first two six-month anniversaries of March 4, 2023, subject to the Reporting Person's continued employment or service with the Issuer through each such date.

SEC source: 0001104659-23-093131 · tm2324092-7_4seq1.xml · derivative · entry 4

Langlais Kerri M. · CIK 0001877257 · Chief Strategy Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 400,000

Underlying: Common Stock · 400,000 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 performance 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 performance stock units vest in accordance with their terms upon the achievement of specified performance goals between the grant date and the third anniversary of March 4, 2023, subject to the Reporting Person's continued employment or service with the Issuer through such date.

F2 · derivative.expiration_date: The performance stock units vest in accordance with their terms upon the achievement of specified performance goals between the grant date and the third anniversary of March 4, 2023, subject to the Reporting Person's continued employment or service with the Issuer through such date.

SEC source: 0001104659-23-093131 · tm2324092-7_4seq1.xml · nonDerivative · entry 2

Langlais Kerri M. · CIK 0001877257 · Chief Strategy Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,503,499

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.

F2 · price: The performance stock units vest in accordance with their terms upon the achievement of specified performance goals between the grant date and the third anniversary of March 4, 2023, subject to the Reporting Person's continued employment or service with the Issuer through such date.

SEC source: 0001104659-23-093131 · tm2324092-7_4seq1.xml · nonDerivative · entry 1

Langlais Kerri M. · CIK 0001877257 · Chief Strategy Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,103,499

F1 · price: The disposition is due to withholding to cover taxes, as a result of the Reporting Person's election of net settlement of performance stock units, which vest in accordance with their terms upon the achievement of specified performance goals between the grant date and the third anniversary of March 4, 2023, subject to the Reporting Person's continued employment or service with the Issuer through each such date. Each performance stock unit represents a contingent right to receive one share of the Issuer's common stock, $0.001 par value per share.

SEC source: 0001104659-23-072063 · tm2318888-1_4seq1.xml · nonDerivative · entry 1

Langlais Kerri M. · CIK 0001877257 · Chief Strategy Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,264,701

F1 · price: The shares were received in connection with a distribution from Stammtisch Investments LLC on June 14, 2023.

SEC source: 0001104659-23-069991 · tm2318365-2_4seq1.xml · derivative · entry 3

Langlais Kerri M. · CIK 0001877257 · Chief Strategy Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 800,000

Underlying: Common Stock · 400,000 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.

F2 · derivative.exercise_price: Each performance stock unit represents a contingent right to receive one share of the Issuer's common stock, $0.001 par value per share.

F1 · derivative.exercise_date: The performance stock units vest in accordance with their terms upon the achievement of specified performance goals between the grant date and the third anniversary of March 4, 2023, subject to the Reporting Person's continued employment or service with the Issuer through such date.

F1 · derivative.expiration_date: The performance stock units vest in accordance with their terms upon the achievement of specified performance goals between the grant date and the third anniversary of March 4, 2023, subject to the Reporting Person's continued employment or service with the Issuer through such date.

SEC source: 0001104659-23-069991 · tm2318365-2_4seq1.xml · nonDerivative · entry 1

Langlais Kerri M. · CIK 0001877257 · Chief Strategy Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 832,350

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 performance stock units vest in accordance with their terms upon the achievement of specified performance goals between the grant date and the third anniversary of March 4, 2023, subject to the Reporting Person's continued employment or service with the Issuer through such date.

SEC source: 0000950142-23-000644 · es230336754_4-langlais.xml · derivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 800,000

Underlying: Common Stock · 800,000 shares

Expires not disclosed

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 · derivative.exercise_date: Fifty percent (50%) of the restricted stock units shall vest upon each of the first two six month anniversaries of March 4, 2023, subject to the Reporting Person's continued employment or service with the Issuer through such date.

F4 · derivative.expiration_date: Fifty percent (50%) of the restricted stock units shall vest upon each of the first two six month anniversaries of March 4, 2023, subject to the Reporting Person's continued employment or service with the Issuer through such date.

SEC source: 0000950142-23-000644 · es230336754_4-langlais.xml · derivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,200,000

Underlying: Common Stock · 1,200,000 shares

Expires not disclosed

F1 · derivative.exercise_price: Each performance 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 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 March 4, 2023, subject to the Reporting Person's continued employment or service with the Issuer through such date.

F2 · 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 March 4, 2023, subject to the Reporting Person's continued employment or service with the Issuer through such date.

SEC source: 0001104659-22-105455 · tm2227363-2_4seq1.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 432,350

F1 · price: The shares were received in connection with a distribution from Stammtisch Investments LLC on September 29, 2022.

SEC source: 0001104659-22-034899 · tm229568-3_4seq1.xml · derivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 251

Underlying: Common Stock · 25,100 shares

Expires not disclosed

F1 · derivative.exercise_price: Each holder of shares of the Issuer's Series A Convertible Preferred Stock (the "Preferred Stock") has the right, at its option and at any time, to convert all or a portion of the shares of Preferred Stock that it holds into a number of shares of Common Stock equal to the quotient obtained by dividing (i) the sum of (x) the Liquidation Preference (as defined in the Certificate of Designations governing the Preferred Stock, initially $1,000) and (y) an amount equal to accumulated and unpaid Regular Dividends (as defined in the Certificate of Designations) on such shares of Preferred Stock, by (ii) the Conversion Price (as defined in the Certificate of Designations) in effect at such time, subject to customary antidilution adjustments, including in the event of any stock split, stock dividend, recapitalization or similar events.

F2 · derivative.exercise_price: As of the date of the event requiring the filing of this report, the 251 shares of Preferred Stock reported on this report are convertible into 25,100 shares of Common Stock. The Issuer's Preferred Stock does not expire.

F1 · derivative.exercise_date: Each holder of shares of the Issuer's Series A Convertible Preferred Stock (the "Preferred Stock") has the right, at its option and at any time, to convert all or a portion of the shares of Preferred Stock that it holds into a number of shares of Common Stock equal to the quotient obtained by dividing (i) the sum of (x) the Liquidation Preference (as defined in the Certificate of Designations governing the Preferred Stock, initially $1,000) and (y) an amount equal to accumulated and unpaid Regular Dividends (as defined in the Certificate of Designations) on such shares of Preferred Stock, by (ii) the Conversion Price (as defined in the Certificate of Designations) in effect at such time, subject to customary antidilution adjustments, including in the event of any stock split, stock dividend, recapitalization or similar events.

F2 · derivative.exercise_date: As of the date of the event requiring the filing of this report, the 251 shares of Preferred Stock reported on this report are convertible into 25,100 shares of Common Stock. The Issuer's Preferred Stock does not expire.

F1 · derivative.expiration_date: Each holder of shares of the Issuer's Series A Convertible Preferred Stock (the "Preferred Stock") has the right, at its option and at any time, to convert all or a portion of the shares of Preferred Stock that it holds into a number of shares of Common Stock equal to the quotient obtained by dividing (i) the sum of (x) the Liquidation Preference (as defined in the Certificate of Designations governing the Preferred Stock, initially $1,000) and (y) an amount equal to accumulated and unpaid Regular Dividends (as defined in the Certificate of Designations) on such shares of Preferred Stock, by (ii) the Conversion Price (as defined in the Certificate of Designations) in effect at such time, subject to customary antidilution adjustments, including in the event of any stock split, stock dividend, recapitalization or similar events.

F2 · derivative.expiration_date: As of the date of the event requiring the filing of this report, the 251 shares of Preferred Stock reported on this report are convertible into 25,100 shares of Common Stock. The Issuer's Preferred Stock does not expire.

SEC source: 0000950142-21-004033 · es210210295_4-langlais.xml · nonDerivative · entry 1

Langlais Kerri M. · CIK 0001877257 · Chief Strategy Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By Langlais Family 2021 GST Trust

Disclosed balance after: 864,701

F1 · kind: Received in connection with the agreement and plan of merger, dated as of June 24, 2021 (as amended, supplemented or otherwise modified prior to the date hereof), by and among TeraWulf Inc. (formerly known as Telluride Holdco, Inc.), a Delaware corporation ("TeraWulf"), IKONICS Corporation, a Minnesota corporation ("IKONICS"), Telluride Merger Sub I, Inc., a Minnesota corporation ("Merger Sub I"), Telluride Merger Sub II, Inc., a Delaware corporation ("Merger Sub II"), and TeraCub Inc. (formerly known as TeraWulf Inc.), a Delaware corporation ("TeraCub"), pursuant to which (i) Merger Sub I, a wholly-owned subsidiary of TeraWulf, which was a wholly-owned subsidiary of IKONICS, merged with and into IKONICS (the "First Merger"), with IKONICS surviving the First Merger as a wholly-owned subsidiary of TeraWulf, and (cont'd on FN 2)

F2 · kind: (cont'd from FN 1) (ii) Merger Sub II, a wholly-owned subsidiary of TeraWulf, merged with and into TeraCub (the "Second Merger"), with TeraCub surviving the Second Merger as a wholly-owned subsidiary of TeraWulf. The Reporting Person received the shares of common stock, $0.001 par value per share, of TeraWulf (the "Shares") as consideration for the Second Merger. The Reporting Person disclaims beneficial ownership of the Shares except to the extent of her pecuniary interest therein, and the inclusion of the Shares in this report shall not be deemed an admission of beneficial ownership of all of the reported Shares for purposes of Section 16 of the Securities Exchange of 1934, as amended, or for any other purpose.

F1 · price: Received in connection with the agreement and plan of merger, dated as of June 24, 2021 (as amended, supplemented or otherwise modified prior to the date hereof), by and among TeraWulf Inc. (formerly known as Telluride Holdco, Inc.), a Delaware corporation ("TeraWulf"), IKONICS Corporation, a Minnesota corporation ("IKONICS"), Telluride Merger Sub I, Inc., a Minnesota corporation ("Merger Sub I"), Telluride Merger Sub II, Inc., a Delaware corporation ("Merger Sub II"), and TeraCub Inc. (formerly known as TeraWulf Inc.), a Delaware corporation ("TeraCub"), pursuant to which (i) Merger Sub I, a wholly-owned subsidiary of TeraWulf, which was a wholly-owned subsidiary of IKONICS, merged with and into IKONICS (the "First Merger"), with IKONICS surviving the First Merger as a wholly-owned subsidiary of TeraWulf, and (cont'd on FN 2)

F2 · price: (cont'd from FN 1) (ii) Merger Sub II, a wholly-owned subsidiary of TeraWulf, merged with and into TeraCub (the "Second Merger"), with TeraCub surviving the Second Merger as a wholly-owned subsidiary of TeraWulf. The Reporting Person received the shares of common stock, $0.001 par value per share, of TeraWulf (the "Shares") as consideration for the Second Merger. The Reporting Person disclaims beneficial ownership of the Shares except to the extent of her pecuniary interest therein, and the inclusion of the Shares in this report shall not be deemed an admission of beneficial ownership of all of the reported Shares for purposes of Section 16 of the Securities Exchange of 1934, as amended, or for any other purpose.