ARQ

SEC source: 0001515156-25-000131 · wk-form4_1759786637.xml · nonDerivative · entry 1

McIntyre Julian Alexander · CIK 0001963363 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Allard Services Limited

Disclosed balance after: 3,191,289

F1 · shares: Represents shares of common stock of the Issuer held by MWB Limited which were transferred to a minority owner of MWB Limited on September 25, 2025 in anticipation of the intended dissolution of the MWB Limited entity. Allard Services Limited is the majority owner of MWB Limited. Concurrently, the remaining 352,042 shares of the Issuer's common stock held by MWB Limited were transferred to Allard Services Limited and are included in the total securities beneficially owned by Allard Services Limited reported in this row.

F2 · balance_after: The reported amount includes 352,042 shares, 43,034 shares and 21,908 shares of common stock that were transferred to Allard Services Limited from MWB Limited, Markham Fuels Management Limited and Stannard Limited, respectively, since the date of the last report filed by the reporting person. As of the date of this report, MWB Limited, Markham Fuels Management Limited and Stannard Limited no longer hold shares of the Issuer's common stock.

F3 · ownership.nature: The shares reported on this row are held by Allard Services Limited. Julian McIntyre, a Director of the Issuer, controls Allard Services Limited and therefore is an indirect beneficial owner of the securities reported herein.

SEC source: 0001515156-25-000129 · wk-form4_1758314259.xml · nonDerivative · entry 1

Williamson Jeremy · CIK 0001993283 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 135,288

F1 · shares: Reflects the withholding of shares of the Issuer's common stock to satisfy tax withholding obligations in connection with the vesting of restricted stock awards ("RSAs") on September 18, 2025.

SEC source: 0001515156-25-000106 · wk-form4_1754516266.xml · nonDerivative · entry 1

Smith Claiborne Benson · CIK 0002021219 · Gen Counsel, Corp Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 82,438

F1 · kind: The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock awards. The sale was made to satisfy tax withholding obligations to be funded by a "sell to cover" transaction.

SEC source: 0001515156-25-000105 · wk-form4_1754516258.xml · nonDerivative · entry 1

Hansen Stacia · CIK 0001999392 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 73,199

F1 · kind: The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock awards. The sale was made to satisfy tax withholding obligations to be funded by a "sell to cover" transaction.

SEC source: 0001515156-25-000107 · wk-form4_1754516274.xml · nonDerivative · entry 1

Wong Joseph M · CIK 0001785490 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 367,738

F1 · kind: The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock awards. The sale was made to satisfy tax withholding obligations to be funded by a "sell to cover" transaction.

SEC source: 0001515156-25-000104 · wk-form4_1754516251.xml · nonDerivative · entry 1

Williamson Jeremy · CIK 0001993283 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 137,317

F1 · kind: The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock awards. The sale was made to satisfy tax withholding obligations to be funded by a "sell to cover" transaction.

SEC source: 0001515156-25-000093 · wk-form4_1751576411.xml · nonDerivative · entry 1

Bergman Laurie · CIK 0001672722 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 51,702

F1 · shares: Represents restricted stock awards granted in exchange for the reporting owner's service as a non-employee director of the Issuer. The restricted stock awards shall vest on July 1, 2026.

SEC source: 0001515156-25-000094 · wk-form4_1751576429.xml · nonDerivative · entry 1

EICHER CAROL S · CIK 0001434811 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 96,510

F1 · shares: Represents restricted stock awards granted in exchange for the reporting owner's service as a non-employee director of the Issuer. The restricted stock awards shall vest on July 1, 2026.

SEC source: 0001515156-25-000097 · wk-form4_1751576477.xml · nonDerivative · entry 1

McIntyre Julian Alexander · CIK 0001963363 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 58,978

F1 · shares: Represents restricted stock awards granted in exchange for the reporting owner's service as a non-employee director of the Issuer. The restricted stock awards shall vest on July 1, 2026.

SEC source: 0001515156-25-000096 · wk-form4_1751576466.xml · nonDerivative · entry 1

Campbell-Breeden Richard · CIK 0001963344 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 86,868

F1 · shares: Represents restricted stock awards granted in exchange for the reporting owner's service as a non-employee director of the Issuer. The restricted stock awards shall vest on July 1, 2026.

SEC source: 0001515156-25-000095 · wk-form4_1751576455.xml · nonDerivative · entry 1

Blank Jeremy · CIK 0001962987 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 78,762

F1 · shares: Represents restricted stock awards granted in exchange for the reporting owner's service as a non-employee director of the Issuer. The restricted stock awards shall vest on July 1, 2026.

SEC source: 0001515156-25-000074 · wk-form4_1748378721.xml · nonDerivative · entry 2

Campbell-Breeden Richard · CIK 0001963344 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Omeshorn Holdings Limited.

Disclosed balance after: 226,148

F1 · kind: The reported transaction represents a privately negotiated purchase of 75,000 shares of common stock of the Issuer from another non-affiliated holder of the Issuer's common stock at the negotiated price of $4.10 per share.

F2 · ownership.nature: The shares reported on this row are held by Omeshorn Holdings Ltd. Richard Campbell-Breeden, a Director of the Issuer, is a director of Omeshorn Holdings Ltd. and therefore is an indirect beneficial owner of the securities reported herein.

SEC source: 0001515156-25-000078 · wk-form4_1748465128.xml · nonDerivative · entry 1

Rasmus Robert E. · CIK 0001555130 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 480,782

F1 · kind: The reported transaction represents a privately negotiated purchase of 25,000 shares of common stock of the Issuer from another non-affiliated holder of the Issuer's common stock at the negotiated price of $4.10 per share.

SEC source: 0001515156-25-000077 · wk-form4_1748465107.xml · nonDerivative · entry 2

Blank Jeremy · CIK 0001962987 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Community Master Fund LP

Disclosed balance after: 374,955

F1 · kind: The reported transaction represents a privately negotiated purchase of 50,000 shares of common stock of the Issuer from another non-affiliated holder of the Issuer's common stock at the negotiated price of $4.10 per share.

F2 · balance_after: The reported amount includes 324,955 shares of common stock that were transferred to Community Master Fund LP from CF Global Credit, LP since the date of the last report filed by the reporting person.

F3 · ownership.nature: The shares reported on this row are held by Community Master Fund LP. Jeremy Blank, a Director of the Issuer, controls the general partner of Community Master Fund LP. Mr. Blank is an investor in Community Master Fund LP and therefore is an indirect beneficial owner of a portion of these shares. Mr. Blank disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

SEC source: 0001515156-25-000071 · wk-form4_1747773014.xml · nonDerivative · entry 1

Wong Joseph M · CIK 0001785490 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 370,790

F1 · price: This price is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $4.50 to $4.63, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this Form 4.

SEC source: 0001515156-25-000069 · wk-form4_1747341051.xml · nonDerivative · entry 4

Rasmus Robert E. · CIK 0001555130 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · RER Investments LLC

Disclosed balance after: 20,718

F2 · ownership.nature: The shares of Common Stock reported on this row are held by RER Investments LLC ("RER Investments"). Mr. Rasmus is the ultimate control person of RER Investments, and an indirect beneficial owner of these shares. Mr. Rasmus disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

SEC source: 0001515156-25-000069 · wk-form4_1747341051.xml · nonDerivative · entry 3

Rasmus Robert E. · CIK 0001555130 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · RER Investments LLC

Disclosed balance after: 8,183

F2 · ownership.nature: The shares of Common Stock reported on this row are held by RER Investments LLC ("RER Investments"). Mr. Rasmus is the ultimate control person of RER Investments, and an indirect beneficial owner of these shares. Mr. Rasmus disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

SEC source: 0001515156-25-000064 · wk-form4_1747168224.xml · nonDerivative · entry 4

Rasmus Robert E. · CIK 0001555130 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · RER Investments LLC

Disclosed balance after: 5,262

F2 · ownership.nature: The shares of Common Stock reported on this row are held by RER Investments LLC ("RER Investments"). Mr. Rasmus is the ultimate control person of RER Investments, and an indirect beneficial owner of these shares. Mr. Rasmus disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

SEC source: 0001515156-25-000067 · wk-form4_1747254615.xml · nonDerivative · entry 1

Williamson Jeremy · CIK 0001993283 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 139,099

SEC source: 0001515156-25-000064 · wk-form4_1747168224.xml · nonDerivative · entry 3

Rasmus Robert E. · CIK 0001555130 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · RER Investments LLC

Disclosed balance after: 582

F2 · ownership.nature: The shares of Common Stock reported on this row are held by RER Investments LLC ("RER Investments"). Mr. Rasmus is the ultimate control person of RER Investments, and an indirect beneficial owner of these shares. Mr. Rasmus disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

SEC source: 0001515156-25-000033 · wk-form4_1743804409.xml · nonDerivative · entry 1

Voncannon Jay Loring · CIK 0002063870 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 50,000

F1 · shares: Represents restricted stock awards granted in accordance with the Issuer's long-term incentive plan under the 2024 Omnibus Incentive Plan, as approved by stockholders on June 10, 2024. The restricted stock awards shall vest in full on April 2, 2027.

SEC source: 0001515156-25-000022 · wk-form4_1742939893.xml · nonDerivative · entry 2

Smith Claiborne Benson · CIK 0002021219 · Gen Counsel, Corp Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 85,029

F2 · kind: The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock awards. The sale was made to satisfy tax withholding obligations to be funded by a "sell to cover" transaction.

SEC source: 0001515156-25-000023 · wk-form4_1742939903.xml · nonDerivative · entry 2

Hansen Stacia · CIK 0001999392 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 75,941

F2 · kind: The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock awards. The sale was made to satisfy tax withholding obligations to be funded by a "sell to cover" transaction.

SEC source: 0001515156-25-000021 · wk-form4_1742939882.xml · nonDerivative · entry 2

Williamson Jeremy · CIK 0001993283 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 138,699

F2 · kind: The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock awards. The sale was made to satisfy tax withholding obligations to be funded by a "sell to cover" transaction.

SEC source: 0001515156-25-000020 · wk-form4_1742939871.xml · nonDerivative · entry 2

Wong Joseph M · CIK 0001785490 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 354,790

F2 · kind: The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock awards. The sale was made to satisfy tax withholding obligations to be funded by a "sell to cover" transaction.

SEC source: 0001515156-25-000022 · wk-form4_1742939893.xml · derivative · entry 3

Smith Claiborne Benson · CIK 0002021219 · Gen Counsel, Corp Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,952

Underlying: Common Stock · 47,904 shares

Expires 2028-03-10

F3 · derivative.exercise_price: Each Performance Share Unit ("PSU") represents a contingent right to receive one share of the Company's common stock upon vesting of the PSU, which will occur, if at all, no later than March 10, 2028 subject to the reporting person's continuous service with the Company or its related entities and the achievement of certain pre-established goals to be measured as of December 31, 2027.

F1 · shares: Represents restricted stock awards granted in accordance with the Issuer's long-term incentive plan under the 2024 Omnibus Incentive Plan, as approved by stockholders on June 10, 2024. The restricted stock awards shall vest in three equal annual installments, beginning on the first anniversary of the grant date.

F3 · derivative.exercise_date: Each Performance Share Unit ("PSU") represents a contingent right to receive one share of the Company's common stock upon vesting of the PSU, which will occur, if at all, no later than March 10, 2028 subject to the reporting person's continuous service with the Company or its related entities and the achievement of certain pre-established goals to be measured as of December 31, 2027.

F3 · derivative.expiration_date: Each Performance Share Unit ("PSU") represents a contingent right to receive one share of the Company's common stock upon vesting of the PSU, which will occur, if at all, no later than March 10, 2028 subject to the reporting person's continuous service with the Company or its related entities and the achievement of certain pre-established goals to be measured as of December 31, 2027.

F4 · derivative.underlying_shares: Represents the maximum number of PSUs that will vest, if at all, which is 200% of the target award.

SEC source: 0001515156-25-000022 · wk-form4_1742939893.xml · nonDerivative · entry 1

Smith Claiborne Benson · CIK 0002021219 · Gen Counsel, Corp Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 90,231

F1 · shares: Represents restricted stock awards granted in accordance with the Issuer's long-term incentive plan under the 2024 Omnibus Incentive Plan, as approved by stockholders on June 10, 2024. The restricted stock awards shall vest in three equal annual installments, beginning on the first anniversary of the grant date.

SEC source: 0001515156-25-000023 · wk-form4_1742939903.xml · derivative · entry 3

Hansen Stacia · CIK 0001999392 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 22,455

Underlying: Common Stock · 44,910 shares

Expires 2028-03-10

F3 · derivative.exercise_price: Each Performance Share Unit ("PSU") represents a contingent right to receive one share of the Company's common stock upon vesting of the PSU, which will occur, if at all, no later than March 10, 2028 subject to the reporting person's continuous service with the Company or its related entities and the achievement of certain pre-established goals to be measured as of December 31, 2027.

F1 · shares: Represents restricted stock awards granted in accordance with the Issuer's long-term incentive plan under the 2024 Omnibus Incentive Plan, as approved by stockholders on June 10, 2024. The restricted stock awards shall vest in three equal annual installments, beginning on the first anniversary of the grant date.

F3 · derivative.exercise_date: Each Performance Share Unit ("PSU") represents a contingent right to receive one share of the Company's common stock upon vesting of the PSU, which will occur, if at all, no later than March 10, 2028 subject to the reporting person's continuous service with the Company or its related entities and the achievement of certain pre-established goals to be measured as of December 31, 2027.

F3 · derivative.expiration_date: Each Performance Share Unit ("PSU") represents a contingent right to receive one share of the Company's common stock upon vesting of the PSU, which will occur, if at all, no later than March 10, 2028 subject to the reporting person's continuous service with the Company or its related entities and the achievement of certain pre-established goals to be measured as of December 31, 2027.

F4 · derivative.underlying_shares: Represents the maximum number of PSUs that will vest, if at all, which is 200% of the target award.

SEC source: 0001515156-25-000023 · wk-form4_1742939903.xml · nonDerivative · entry 1

Hansen Stacia · CIK 0001999392 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 79,498

F1 · shares: Represents restricted stock awards granted in accordance with the Issuer's long-term incentive plan under the 2024 Omnibus Incentive Plan, as approved by stockholders on June 10, 2024. The restricted stock awards shall vest in three equal annual installments, beginning on the first anniversary of the grant date.

SEC source: 0001515156-25-000024 · wk-form4_1742939913.xml · derivative · entry 3

Rasmus Robert E. · CIK 0001555130 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,990

Underlying: Common Stock · 9,980 shares

Expires 2028-03-10

F3 · derivative.exercise_price: Each Performance Share Unit ("PSU") represents a contingent right to receive one share of the Company's common stock upon vesting of the PSU, which will occur, if at all, no later than March 10, 2028 subject to the reporting person's continuous service with the Company or its related entities and the achievement of certain pre-established goals to be measured as of December 31, 2027.

F1 · shares: Represents restricted stock awards granted in accordance with the Issuer's long-term incentive plan under the 2024 Omnibus Incentive Plan, as approved by stockholders on June 10, 2024. The restricted stock awards shall vest in three equal annual installments, beginning on the first anniversary of the grant date.

F3 · derivative.exercise_date: Each Performance Share Unit ("PSU") represents a contingent right to receive one share of the Company's common stock upon vesting of the PSU, which will occur, if at all, no later than March 10, 2028 subject to the reporting person's continuous service with the Company or its related entities and the achievement of certain pre-established goals to be measured as of December 31, 2027.

F3 · derivative.expiration_date: Each Performance Share Unit ("PSU") represents a contingent right to receive one share of the Company's common stock upon vesting of the PSU, which will occur, if at all, no later than March 10, 2028 subject to the reporting person's continuous service with the Company or its related entities and the achievement of certain pre-established goals to be measured as of December 31, 2027.

F4 · derivative.underlying_shares: Represents the maximum number of PSUs that will vest, if at all, which is 200% of the target award.

SEC source: 0001515156-25-000024 · wk-form4_1742939913.xml · nonDerivative · entry 1

Rasmus Robert E. · CIK 0001555130 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 455,782

F1 · shares: Represents restricted stock awards granted in accordance with the Issuer's long-term incentive plan under the 2024 Omnibus Incentive Plan, as approved by stockholders on June 10, 2024. The restricted stock awards shall vest in three equal annual installments, beginning on the first anniversary of the grant date.

SEC source: 0001515156-25-000021 · wk-form4_1742939882.xml · derivative · entry 3

Williamson Jeremy · CIK 0001993283 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,069

Underlying: Common Stock · 56,138 shares

Expires 2028-03-10

F3 · derivative.exercise_price: Each Performance Share Unit ("PSU") represents a contingent right to receive one share of the Company's common stock upon vesting of the PSU, which will occur, if at all, no later than March 10, 2028 subject to the reporting person's continuous service with the Company or its related entities and the achievement of certain pre-established goals to be measured as of December 31, 2027.

F1 · shares: Represents restricted stock awards granted in accordance with the Issuer's long-term incentive plan under the 2024 Omnibus Incentive Plan, as approved by stockholders on June 10, 2024. The restricted stock awards shall vest in three equal annual installments, beginning on the first anniversary of the grant date.

F3 · derivative.exercise_date: Each Performance Share Unit ("PSU") represents a contingent right to receive one share of the Company's common stock upon vesting of the PSU, which will occur, if at all, no later than March 10, 2028 subject to the reporting person's continuous service with the Company or its related entities and the achievement of certain pre-established goals to be measured as of December 31, 2027.

F3 · derivative.expiration_date: Each Performance Share Unit ("PSU") represents a contingent right to receive one share of the Company's common stock upon vesting of the PSU, which will occur, if at all, no later than March 10, 2028 subject to the reporting person's continuous service with the Company or its related entities and the achievement of certain pre-established goals to be measured as of December 31, 2027.

F4 · derivative.underlying_shares: Represents the maximum number of PSUs that will vest, if at all, which is 200% of the target award.

SEC source: 0001515156-25-000021 · wk-form4_1742939882.xml · nonDerivative · entry 1

Williamson Jeremy · CIK 0001993283 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 143,932

F1 · shares: Represents restricted stock awards granted in accordance with the Issuer's long-term incentive plan under the 2024 Omnibus Incentive Plan, as approved by stockholders on June 10, 2024. The restricted stock awards shall vest in three equal annual installments, beginning on the first anniversary of the grant date.

SEC source: 0001515156-25-000020 · wk-form4_1742939871.xml · derivative · entry 3

Wong Joseph M · CIK 0001785490 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,198

Underlying: Common Stock · 52,396 shares

Expires 2028-03-10

F3 · derivative.exercise_price: Each Performance Share Unit ("PSU") represents a contingent right to receive one share of the Company's common stock upon vesting of the PSU, which will occur, if at all, no later than March 10, 2028 subject to the reporting person's continuous service with the Company or its related entities and the achievement of certain pre-established goals to be measured as of December 31, 2027.

F1 · shares: Represents restricted stock awards granted in accordance with the Issuer's long-term incentive plan under the 2024 Omnibus Incentive Plan, as approved by stockholders on June 10, 2024. The restricted stock awards shall vest in three equal annual installments, beginning on the first anniversary of the grant date.

F3 · derivative.exercise_date: Each Performance Share Unit ("PSU") represents a contingent right to receive one share of the Company's common stock upon vesting of the PSU, which will occur, if at all, no later than March 10, 2028 subject to the reporting person's continuous service with the Company or its related entities and the achievement of certain pre-established goals to be measured as of December 31, 2027.

F3 · derivative.expiration_date: Each Performance Share Unit ("PSU") represents a contingent right to receive one share of the Company's common stock upon vesting of the PSU, which will occur, if at all, no later than March 10, 2028 subject to the reporting person's continuous service with the Company or its related entities and the achievement of certain pre-established goals to be measured as of December 31, 2027.

F4 · derivative.underlying_shares: Represents the maximum number of PSUs that will vest, if at all, which is 200% of the target award.

SEC source: 0001515156-25-000020 · wk-form4_1742939871.xml · nonDerivative · entry 1

Wong Joseph M · CIK 0001785490 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 361,386

F1 · shares: Represents restricted stock awards granted in accordance with the Issuer's long-term incentive plan under the 2024 Omnibus Incentive Plan, as approved by stockholders on June 10, 2024. The restricted stock awards shall vest in three equal annual installments, beginning on the first anniversary of the grant date.

SEC source: 0001515156-25-000007 · wk-form4_1739572623.xml · derivative · entry 3

Wong Joseph M · CIK 0001785490 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 33,420 shares

Expires 2025-03-10

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: On February 12, 2025, the Compensation Committee of the Board of Directors of the issuer determined that of the 16,710 performance share units ("PSUs") awarded to the reporting person on March 23, 2022 pursuant to the 2022 Long Term Incentive Plan under the issuer's 2017 Omnibus Equity Incentive Plan, 14,728 PSUs vested based on the achievement of specific performance criteria over a three year performance period ended December 31, 2024. Each vested PSU represented the right to receive one share of the issuer's common stock.

F3 · shares: Represents the maximum number of PSUs eligible to vest, which is 200% of the target award.

F1 · derivative.exercise_date: On February 12, 2025, the Compensation Committee of the Board of Directors of the issuer determined that of the 16,710 performance share units ("PSUs") awarded to the reporting person on March 23, 2022 pursuant to the 2022 Long Term Incentive Plan under the issuer's 2017 Omnibus Equity Incentive Plan, 14,728 PSUs vested based on the achievement of specific performance criteria over a three year performance period ended December 31, 2024. Each vested PSU represented the right to receive one share of the issuer's common stock.

SEC source: 0001515156-25-000007 · wk-form4_1739572623.xml · nonDerivative · entry 2

Wong Joseph M · CIK 0001785490 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 335,188

F2 · shares: Reflects the withholding of shares of the Issuer's common stock to satisfy tax withholding obligations in connection with the vesting of PSUs on February 12, 2025.

SEC source: 0001515156-25-000007 · wk-form4_1739572623.xml · nonDerivative · entry 1

Wong Joseph M · CIK 0001785490 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 342,183

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: On February 12, 2025, the Compensation Committee of the Board of Directors of the issuer determined that of the 16,710 performance share units ("PSUs") awarded to the reporting person on March 23, 2022 pursuant to the 2022 Long Term Incentive Plan under the issuer's 2017 Omnibus Equity Incentive Plan, 14,728 PSUs vested based on the achievement of specific performance criteria over a three year performance period ended December 31, 2024. Each vested PSU represented the right to receive one share of the issuer's common stock.

SEC source: 0001515156-24-000185 · wk-form4_1732743285.xml · nonDerivative · entry 1

Blank Jeremy · CIK 0001962987 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By YGF 100 LP.

Disclosed balance after: 1,987,434

F1 · price: Pursuant to a special resolution, passed by the shareholders of Arq Limited on June 17, 2024 and for the purpose of effecting the wind-down of Arq Limited as contemplated by the Securities Purchase Agreement, dated February 1, 2023, by and between Arq, Inc. (f/k/a Advanced Emissions Solutions, Inc.) (the "Issuer") and Arq Limited, on November 26, 2024, Arq Limited distributed its remaining held shares of the Issuer's common stock, par value 0.001 per share, to its shareholders. The shares were distributed without the payment of any additional consideration.

F2 · ownership.nature: The shares reported on this row are held by YGF 100 LP ("YGF"). Jeremy Blank, a Director of the Issuer, is the ultimate control person of YGF. Mr. Blank is an investor in YGF and therefore is an indirect beneficial owner of a portion of these shares. Mr. Blank disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

SEC source: 0001515156-24-000184 · wk-form4_1732743275.xml · nonDerivative · entry 3

McIntyre Julian Alexander · CIK 0001963363 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Stannard Limited

Disclosed balance after: 21,908

F1 · price: Pursuant to a special resolution, passed by the shareholders of Arq Limited on June 17, 2024 and for the purpose of effecting the wind-down of Arq Limited as contemplated by the Securities Purchase Agreement, dated February 1, 2023, by and between Arq, Inc. (f/k/a Advanced Emissions Solutions, Inc.) (the "Issuer") and Arq Limited, on November 26, 2024, Arq Limited distributed its remaining held shares of the Issuer's common stock, par value $0.001 per share, to its shareholders. The shares were distributed without the payment of any additional consideration.

F4 · ownership.nature: The shares reported on this row are held by Stannard Limited. Mr. McIntyre's spouse controls Stannard Limited and therefore Mr. McIntyre may be deemed to be an indirect beneficial owner of the securities reported herein.

SEC source: 0001515156-24-000184 · wk-form4_1732743275.xml · nonDerivative · entry 2

McIntyre Julian Alexander · CIK 0001963363 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By MWB Limited

Disclosed balance after: 382,042

F1 · price: Pursuant to a special resolution, passed by the shareholders of Arq Limited on June 17, 2024 and for the purpose of effecting the wind-down of Arq Limited as contemplated by the Securities Purchase Agreement, dated February 1, 2023, by and between Arq, Inc. (f/k/a Advanced Emissions Solutions, Inc.) (the "Issuer") and Arq Limited, on November 26, 2024, Arq Limited distributed its remaining held shares of the Issuer's common stock, par value $0.001 per share, to its shareholders. The shares were distributed without the payment of any additional consideration.

F3 · ownership.nature: The shares reported on this row are held by MWB Limited, which is controlled by Allard Services Limited. Julian McIntyre, a Director of the Issuer, controls Allard Services Limited and therefore may be deemed to be an indirect beneficial owner of the securities reported herein.

SEC source: 0001515156-24-000184 · wk-form4_1732743275.xml · nonDerivative · entry 1

McIntyre Julian Alexander · CIK 0001963363 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Markham Fuels Management Limited

Disclosed balance after: 43,034

F1 · price: Pursuant to a special resolution, passed by the shareholders of Arq Limited on June 17, 2024 and for the purpose of effecting the wind-down of Arq Limited as contemplated by the Securities Purchase Agreement, dated February 1, 2023, by and between Arq, Inc. (f/k/a Advanced Emissions Solutions, Inc.) (the "Issuer") and Arq Limited, on November 26, 2024, Arq Limited distributed its remaining held shares of the Issuer's common stock, par value $0.001 per share, to its shareholders. The shares were distributed without the payment of any additional consideration.

F2 · ownership.nature: The shares reported on this row are held by Markham Fuels Management Limited. Julian McIntyre, a Director of the Issuer, controls Markham Fuels Management Limited and therefore may be deemed an indirect beneficial owner of the securities reported herein.

SEC source: 0001515156-24-000183 · wk-form4_1732743262.xml · nonDerivative · entry 2

Campbell-Breeden Richard · CIK 0001963344 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 57,764

F1 · price: Pursuant to a special resolution, passed by the shareholders of Arq Limited on June 17, 2024 and for the purpose of effecting the wind-down of Arq Limited as contemplated by the Securities Purchase Agreement, dated February 1, 2023, by and between Arq, Inc. (f/k/a Advanced Emissions Solutions, Inc.) (the "Issuer") and Arq Limited, on November 26, 2024, Arq Limited distributed its remaining held shares of the Issuer's common stock, par value $0.001 per share, to its shareholders. The shares were distributed without the payment of any additional consideration.

SEC source: 0001515156-24-000183 · wk-form4_1732743262.xml · nonDerivative · entry 1

Campbell-Breeden Richard · CIK 0001963344 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Omeshorn Holdings Limited.

Disclosed balance after: 151,148

F1 · price: Pursuant to a special resolution, passed by the shareholders of Arq Limited on June 17, 2024 and for the purpose of effecting the wind-down of Arq Limited as contemplated by the Securities Purchase Agreement, dated February 1, 2023, by and between Arq, Inc. (f/k/a Advanced Emissions Solutions, Inc.) (the "Issuer") and Arq Limited, on November 26, 2024, Arq Limited distributed its remaining held shares of the Issuer's common stock, par value $0.001 per share, to its shareholders. The shares were distributed without the payment of any additional consideration.

F2 · ownership.nature: The shares reported on this row are held by Omeshorn Holdings Ltd. Richard Campbell-Breeden, a Director of the Issuer, is a director of Omeshorn Holdings Ltd. and therefore is an indirect beneficial owner of the securities reported herein.

SEC source: 0001515156-24-000179 · wk-form4_1732225564.xml · nonDerivative · entry 1

Blank Jeremy · CIK 0001962987 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Community SPV GP LP.

Disclosed balance after: 47,416

F1 · price: Pursuant to a special resolution, passed by the shareholders of Arq Limited on June 17, 2024 and for the purpose of effecting the wind-down of Arq Limited as contemplated by the Securities Purchase Agreement, dated February 1, 2023, by and between Arq, Inc. (f/k/a Advanced Emissions Solutions, Inc.) (the "Issuer") and Arq Limited, on November 20, 2024, Arq Limited distributed its remaining held shares of the Issuer's common stock, par value 0.001 per share, to its shareholders. The shares were distributed without the payment of any additional consideration.

F2 · ownership.nature: The shares reported on this row are held by Community SPV GP LP. Mr. Blank is the ultimate control person of Community SPV GP LP. Mr. Blank is an investor in Community SPV GP LP and therefore is an indirect beneficial owner of a portion of these shares. Mr. Blank disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

SEC source: 0001515156-24-000178 · wk-form4_1732225552.xml · nonDerivative · entry 1

McIntyre Julian Alexander · CIK 0001963363 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Allard Services Limited

Disclosed balance after: 2,774,305

F1 · price: Pursuant to a special resolution, passed by the shareholders of Arq Limited on June 17, 2024 and for the purpose of effecting the wind-down of Arq Limited as contemplated by the Securities Purchase Agreement, dated February 1, 2023, by and between Arq, Inc. (f/k/a Advanced Emissions Solutions, Inc.) (the "Issuer") and Arq Limited, on November 20, 2024, Arq Limited distributed its remaining held shares of the Issuer's common stock, par value $0.001 per share, to its shareholders. The shares were distributed without the payment of any additional consideration.

F2 · ownership.nature: The shares reported on this row are held by Allard Services Limited. Julian McIntyre, a Director of the Issuer, controls Allard Services Limited and therefore is an indirect beneficial owner of the securities reported herein.

SEC source: 0001515156-24-000166 · wk-form4_1727181112.xml · nonDerivative · entry 1

Rasmus Robert E. · CIK 0001555130 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 450,792

F1 · shares: Shares were purchased in the Issuer's underwritten public offering of common stock.

SEC source: 0001515156-24-000156 · wk-form4_1726695158.xml · nonDerivative · entry 1

Williamson Jeremy · CIK 0001993283 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 115,863

F1 · shares: Reflects the withholding of shares of the Issuer's common stock to satisfy tax withholding obligations in connection with the vesting of restricted stock awards ("RSAs") on September 18, 2024.

SEC source: 0001515156-24-000139 · wk-form4_1722897969.xml · derivative · entry 2

Smith Claiborne Benson · CIK 0002021219 · Gen Counsel, Corp Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,810

Underlying: Common Stock · 39,620 shares

Expires 2027-03-10

F2 · derivative.exercise_price: Each Performance Share Unit ("PSU") represents a contingent right to receive one share of the Company's common stock upon vesting of the PSU, which will occur, if at all, no later than March 10, 2027 subject to the reporting person's continuous service with the Company or its related entities and the achievement of certain pre-established goals to be measured as of December 31, 2026.

F1 · shares: Granted in accordance with the Issuer's long-term incentive plan under the 2024 Omnibus Incentive Plan, as approved by stockholders on June 10, 2024.

F2 · derivative.exercise_date: Each Performance Share Unit ("PSU") represents a contingent right to receive one share of the Company's common stock upon vesting of the PSU, which will occur, if at all, no later than March 10, 2027 subject to the reporting person's continuous service with the Company or its related entities and the achievement of certain pre-established goals to be measured as of December 31, 2026.

F2 · derivative.expiration_date: Each Performance Share Unit ("PSU") represents a contingent right to receive one share of the Company's common stock upon vesting of the PSU, which will occur, if at all, no later than March 10, 2027 subject to the reporting person's continuous service with the Company or its related entities and the achievement of certain pre-established goals to be measured as of December 31, 2026.

F3 · derivative.underlying_shares: Represents the maximum number of PSUs that will vest, if at all, which is 200% of the target award.

SEC source: 0001515156-24-000139 · wk-form4_1722897969.xml · nonDerivative · entry 1

Smith Claiborne Benson · CIK 0002021219 · Gen Counsel, Corp Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 66,279

F1 · shares: Granted in accordance with the Issuer's long-term incentive plan under the 2024 Omnibus Incentive Plan, as approved by stockholders on June 10, 2024.