{"transactions":[{"id":4615027,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":26581,"kind":"person","name":"Steinmetz Shimon","position":1,"cik":"0001579280","reported_name":"Steinmetz Shimon","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2026-09-10T21:33:35.000Z","date":"2026-09-08","kind":"purchase","planned":false,"acquired":true,"shares":1874,"price":2.3393,"value":4383.8482,"ownership":{"direct":false,"nature":"By Steinmetz Advisory Group LLC"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"This price is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $2.3374 to $2.3415, 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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"The shares of Common Stock reported on this row are held by Steinmetz Advisory Group, LLC (\"Steinmetz Advisory Group\"). Mr. Steinmetz, the Chief Financial Officer of the Issuer, is the ultimate control person of Steinmetz Advisory Group, and an indirect beneficial owner of these shares. Mr. Steinmetz disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein."}],"balance_after":15000,"source":{"system":"sec-edgar","filing":"0001515156-26-000129","document":"wk-form4_1789076013.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1579280/000151515626000129/wk-form4_1789076013.xml","form_type":"4"}},{"id":4615026,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":26581,"kind":"person","name":"Steinmetz Shimon","position":1,"cik":"0001579280","reported_name":"Steinmetz Shimon","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2026-09-10T21:33:35.000Z","date":"2026-09-08","kind":"purchase","planned":false,"acquired":true,"shares":1098,"price":2.3396,"value":2568.8808,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"This price is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $2.3374 to $2.3415, 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."}],"balance_after":353023,"source":{"system":"sec-edgar","filing":"0001515156-26-000129","document":"wk-form4_1789076013.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1579280/000151515626000129/wk-form4_1789076013.xml","form_type":"4"}},{"id":4613617,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":26581,"kind":"person","name":"Steinmetz Shimon","position":1,"cik":"0001579280","reported_name":"Steinmetz Shimon","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2026-09-09T21:32:26.000Z","date":"2026-09-04","kind":"purchase","planned":false,"acquired":true,"shares":4356,"price":2.2737,"value":9904.2372,"ownership":{"direct":false,"nature":"By Steinmetz Advisory Group LLC"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This price is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $2.255 to $2.29, 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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares of Common Stock reported on this row are held by Steinmetz Advisory Group, LLC (\"Steinmetz Advisory Group\"). Mr. Steinmetz, the Chief Financial Officer of the Issuer, is the ultimate control person of Steinmetz Advisory Group, and an indirect beneficial owner of these shares. Mr. Steinmetz disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein."}],"balance_after":13126,"source":{"system":"sec-edgar","filing":"0001515156-26-000127","document":"wk-form4_1788989543.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1579280/000151515626000127/wk-form4_1788989543.xml","form_type":"4"}},{"id":4613616,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":26581,"kind":"person","name":"Steinmetz Shimon","position":1,"cik":"0001579280","reported_name":"Steinmetz Shimon","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2026-09-09T21:32:26.000Z","date":"2026-09-04","kind":"purchase","planned":false,"acquired":true,"shares":1402,"price":2.2889,"value":3209.0378,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"This price is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $2.285 to $2.29, 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."}],"balance_after":351925,"source":{"system":"sec-edgar","filing":"0001515156-26-000127","document":"wk-form4_1788989543.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1579280/000151515626000127/wk-form4_1788989543.xml","form_type":"4"}},{"id":3556763,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":26581,"kind":"person","name":"Steinmetz Shimon","position":1,"cik":"0001579280","reported_name":"Steinmetz Shimon","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2026-09-08T21:32:05.000Z","date":"2026-09-03","kind":"purchase","planned":false,"acquired":true,"shares":8770,"price":2.2251,"value":19514.127,"ownership":{"direct":false,"nature":"By Steinmetz Advisory Group LLC"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This price is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $2.209 to $2.23, 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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares of Common Stock reported on this row are held by Steinmetz Advisory Group, LLC (\"Steinmetz Advisory Group\"). Mr. Steinmetz, the Chief Financial Officer of the Issuer, is the ultimate control person of Steinmetz Advisory Group, and an indirect beneficial owner of these shares. Mr. Steinmetz disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein."}],"balance_after":8770,"source":{"system":"sec-edgar","filing":"0001515156-26-000125","document":"wk-form4_1788903123.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1579280/000151515626000125/wk-form4_1788903123.xml","form_type":"4"}},{"id":3556762,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":26581,"kind":"person","name":"Steinmetz Shimon","position":1,"cik":"0001579280","reported_name":"Steinmetz Shimon","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2026-09-08T21:32:05.000Z","date":"2026-09-03","kind":"purchase","planned":false,"acquired":true,"shares":7500,"price":2.2178,"value":16633.5,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"This price is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $2.175 to $2.23, 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."}],"balance_after":350523,"source":{"system":"sec-edgar","filing":"0001515156-26-000125","document":"wk-form4_1788903123.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1579280/000151515626000125/wk-form4_1788903123.xml","form_type":"4"}},{"id":3209,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":2241,"kind":"person","name":"Owino Peter Oluoch","position":1,"cik":"0002141907","reported_name":"Owino Peter Oluoch","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Accounting Officer"}}],"security":"Performance Share Units","published_at":"2026-09-03T21:32:56.000Z","date":"2026-09-01","kind":"grant","planned":false,"acquired":true,"shares":61047,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Represents performance share units (\"PSUs\") granted in accordance with the Issuer's long-term incentive plan under the Issuer's 2026 Omnibus Incentive Plan."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Each PSU represents a contingent right to receive one share of the Issuer's common stock upon vesting of the PSU, which will occur, if at all, no later than March 15, 2029 subject to the reporting person's continuous service with the Issuer or its related entities and the achievement of certain pre-established goals to be measured as of December 31, 2028."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"Each PSU represents a contingent right to receive one share of the Issuer's common stock upon vesting of the PSU, which will occur, if at all, no later than March 15, 2029 subject to the reporting person's continuous service with the Issuer or its related entities and the achievement of certain pre-established goals to be measured as of December 31, 2028."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F5","text":"Represents the maximum number of PSUs that will vest, if at all, which is 200% of the target award."}],"balance_after":61047,"derivative":{"expiration_date":"2029-03-15","underlying":"Common Stock","underlying_shares":122094},"source":{"system":"sec-edgar","filing":"0001515156-26-000123","document":"wk-form4_1788471173.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/2141907/000151515626000123/wk-form4_1788471173.xml","form_type":"4"}},{"id":3208,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":2241,"kind":"person","name":"Owino Peter Oluoch","position":1,"cik":"0002141907","reported_name":"Owino Peter Oluoch","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Accounting Officer"}}],"security":"Common Stock","published_at":"2026-09-03T21:32:56.000Z","date":"2026-09-01","kind":"grant","planned":false,"acquired":true,"shares":61047,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents RSAs granted in accordance with the Issuer's long-term incentive plan under the Issuer's 2026 Omnibus Incentive Plan, approved by stockholders on June 10, 2026. The RSAs shall vest in three equal installments, on each of September 1, 2027, March 23, 2028, and March 23, 2029."}],"balance_after":161047,"source":{"system":"sec-edgar","filing":"0001515156-26-000123","document":"wk-form4_1788471173.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/2141907/000151515626000123/wk-form4_1788471173.xml","form_type":"4"}},{"id":3207,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":2241,"kind":"person","name":"Owino Peter Oluoch","position":1,"cik":"0002141907","reported_name":"Owino Peter Oluoch","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Accounting Officer"}}],"security":"Common Stock","published_at":"2026-09-03T21:32:56.000Z","date":"2026-09-01","kind":"grant","planned":false,"acquired":true,"shares":100000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Represents restricted stock awards (\"RSAs\") granted to Mr. Owino as an employment inducement award. 33,333 RSAs will vest on each of September 1, 2027 and September 1, 2028, and 33,334 RSAs will vest on September 1, 2029."}],"balance_after":100000,"source":{"system":"sec-edgar","filing":"0001515156-26-000123","document":"wk-form4_1788471173.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2141907/000151515626000123/wk-form4_1788471173.xml","form_type":"4"}},{"id":682959,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":22096,"kind":"person","name":"Wong Joseph M","position":1,"cik":"0001785490","reported_name":"Wong Joseph M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Common Stock","published_at":"2026-08-18T21:10:46.000Z","date":"2026-08-14","kind":"grant","planned":false,"acquired":true,"shares":55000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents restricted stock awards (\"RSAs\") granted in accordance with the Issuer's 2026 Omnibus Incentive Plan, approved by stockholders on June 10, 2026. The RSAs shall vest on August 31, 2028."}],"balance_after":506648,"source":{"system":"sec-edgar","filing":"0001515156-26-000118","document":"wk-form4_1787087444.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515626000118/wk-form4_1787087444.xml","form_type":"4"}},{"id":696947,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":26581,"kind":"person","name":"Steinmetz Shimon","position":1,"cik":"0001579280","reported_name":"Steinmetz Shimon","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Performance Share Units","published_at":"2026-08-05T00:31:43.000Z","date":"2026-08-01","kind":"grant","planned":false,"acquired":true,"shares":93023,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F5","text":"Represents PSUs granted in accordance with the Issuer's long-term incentive plan under the 2026 Omnibus Incentive Plan."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"Each PSU represents a contingent right to receive one share of the Issuer's common stock upon vesting of the PSU, which will occur, if at all, no later than March 15, 2029 subject to the reporting person's continuous service with the Issuer or its related entities and the achievement of certain pre-established goals to be measured as of December 31, 2028."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F6","text":"Each PSU represents a contingent right to receive one share of the Issuer's common stock upon vesting of the PSU, which will occur, if at all, no later than March 15, 2029 subject to the reporting person's continuous service with the Issuer or its related entities and the achievement of certain pre-established goals to be measured as of December 31, 2028."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F7","text":"Represents the maximum number of PSUs that will vest, if at all, which is 200% of the target award."}],"balance_after":93023,"derivative":{"expiration_date":"2029-03-15","underlying":"Common Stock","underlying_shares":186046},"source":{"system":"sec-edgar","filing":"0001515156-26-000108","document":"wk-form4_1785889895.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515626000108/wk-form4_1785889895.xml","form_type":"4"}},{"id":696946,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":26581,"kind":"person","name":"Steinmetz Shimon","position":1,"cik":"0001579280","reported_name":"Steinmetz Shimon","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Performance Share Units","published_at":"2026-08-05T00:31:43.000Z","date":"2026-07-31","kind":"grant","planned":false,"acquired":true,"shares":150000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Represents performance share units (\"PSUs\") granted to Mr. Steinmetz as an employment inducement award. Each PSU represents the right to receive one share of the Issuer's Common Stock upon vesting and settlement."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"50,000 PSUs vest when the 30-day volume weighted average price of the Issuer's Common Stock (the \"30-Day VWAP\") equals $8.00 per share,  50,000 PSUs vest when the 30-Day VWAP equals $10.00 per share, and 50,000 PSUs vest when the 30-Day VWAP equals $15.00 per share, in each case, prior to the third anniversary of the date of grant."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"50,000 PSUs vest when the 30-day volume weighted average price of the Issuer's Common Stock (the \"30-Day VWAP\") equals $8.00 per share,  50,000 PSUs vest when the 30-Day VWAP equals $10.00 per share, and 50,000 PSUs vest when the 30-Day VWAP equals $15.00 per share, in each case, prior to the third anniversary of the date of grant."}],"balance_after":150000,"derivative":{"underlying":"Common Stock","underlying_shares":150000},"source":{"system":"sec-edgar","filing":"0001515156-26-000108","document":"wk-form4_1785889895.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515626000108/wk-form4_1785889895.xml","form_type":"4"}},{"id":696945,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":26581,"kind":"person","name":"Steinmetz Shimon","position":1,"cik":"0001579280","reported_name":"Steinmetz Shimon","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2026-08-05T00:31:43.000Z","date":"2026-08-01","kind":"grant","planned":false,"acquired":true,"shares":93023,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents RSAs granted in accordance with the Issuer's long-term incentive plan under the 2026 Omnibus Incentive Plan, approved by stockholders on June 10, 2026. The RSAs shall vest in three equal installments, on each of August 1, 2027, March 23, 2028, and March 23, 2029."}],"balance_after":343023,"source":{"system":"sec-edgar","filing":"0001515156-26-000108","document":"wk-form4_1785889895.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515626000108/wk-form4_1785889895.xml","form_type":"4"}},{"id":696944,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":26581,"kind":"person","name":"Steinmetz Shimon","position":1,"cik":"0001579280","reported_name":"Steinmetz Shimon","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2026-08-05T00:31:43.000Z","date":"2026-07-31","kind":"grant","planned":false,"acquired":true,"shares":250000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents restricted stock awards (\"RSAs\") granted to Mr. Steinmetz as an employment inducement award. 75,000 RSAs shall vest on the second anniversary of the grant date and the remaining 175,000 RSAs shall vest on the third anniversary of the grant date."}],"balance_after":250000,"source":{"system":"sec-edgar","filing":"0001515156-26-000108","document":"wk-form4_1785889895.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515626000108/wk-form4_1785889895.xml","form_type":"4"}},{"id":697512,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":26726,"kind":"person","name":"Smith Claiborne Benson","position":1,"cik":"0002021219","reported_name":"Smith Claiborne Benson","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Gen Counsel, Corp Secretary"}}],"security":"Performance Share Units","published_at":"2026-08-05T00:30:52.000Z","date":"2026-08-01","kind":"grant","planned":false,"acquired":true,"shares":61047,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Represents performance share units (\"PSUs\") granted in accordance with the Issuer's long-term incentive plan under the 2026 Omnibus Incentive Plan."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Each PSU represents a contingent right to receive one share of the Issuer's Common Stock upon vesting of the PSU, which will occur, if at all, no later than March 15, 2029 subject to the reporting person's continuous service with the Issuer or its related entities and the achievement of certain pre-established goals to be measured as of December 31, 2028."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Each PSU represents a contingent right to receive one share of the Issuer's Common Stock upon vesting of the PSU, which will occur, if at all, no later than March 15, 2029 subject to the reporting person's continuous service with the Issuer or its related entities and the achievement of certain pre-established goals to be measured as of December 31, 2028."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F4","text":"Represents the maximum number of PSUs that will vest, if at all, which is 200% of the target award."}],"balance_after":61047,"derivative":{"expiration_date":"2029-03-15","underlying":"Common Stock","underlying_shares":122094},"source":{"system":"sec-edgar","filing":"0001515156-26-000107","document":"wk-form4_1785889849.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/2021219/000151515626000107/wk-form4_1785889849.xml","form_type":"4"}},{"id":697511,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":26726,"kind":"person","name":"Smith Claiborne Benson","position":1,"cik":"0002021219","reported_name":"Smith Claiborne Benson","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Gen Counsel, Corp Secretary"}}],"security":"Common Stock","published_at":"2026-08-05T00:30:52.000Z","date":"2026-08-01","kind":"grant","planned":false,"acquired":true,"shares":61047,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents restricted stock awards (\"RSAs\") granted in accordance with the Issuer's long-term incentive plan under the 2026 Omnibus Incentive Plan, approved by stockholders on June 10, 2026. The RSAs shall vest in three equal installments, on each of August 1, 2027, March 23, 2028, and March 23, 2029."}],"balance_after":155513,"source":{"system":"sec-edgar","filing":"0001515156-26-000107","document":"wk-form4_1785889849.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2021219/000151515626000107/wk-form4_1785889849.xml","form_type":"4"}},{"id":696943,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":22096,"kind":"person","name":"Wong Joseph M","position":1,"cik":"0001785490","reported_name":"Wong Joseph M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Performance Share Units","published_at":"2026-08-05T00:29:58.000Z","date":"2026-08-01","kind":"grant","planned":false,"acquired":true,"shares":61047,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Represents performance share units (\"PSUs\") granted in accordance with the Issuer's long-term incentive plan under the 2026 Omnibus Incentive Plan."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Each PSU represents a contingent right to receive one share of the Issuer's Common Stock upon vesting of the PSU, which will occur, if at all, no later than March 15, 2029 subject to the reporting person's continuous service with the Issuer or its related entities and the achievement of certain pre-established goals to be measured as of December 31, 2028."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Each PSU represents a contingent right to receive one share of the Issuer's Common Stock upon vesting of the PSU, which will occur, if at all, no later than March 15, 2029 subject to the reporting person's continuous service with the Issuer or its related entities and the achievement of certain pre-established goals to be measured as of December 31, 2028."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F4","text":"Represents the maximum number of PSUs that will vest, if at all, which is 200% of the target award."}],"balance_after":61047,"derivative":{"expiration_date":"2029-03-15","underlying":"Common Stock","underlying_shares":122094},"source":{"system":"sec-edgar","filing":"0001515156-26-000106","document":"wk-form4_1785889795.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515626000106/wk-form4_1785889795.xml","form_type":"4"}},{"id":696942,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":22096,"kind":"person","name":"Wong Joseph M","position":1,"cik":"0001785490","reported_name":"Wong Joseph M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Common Stock","published_at":"2026-08-05T00:29:58.000Z","date":"2026-08-01","kind":"grant","planned":false,"acquired":true,"shares":61047,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents restricted stock awards (\"RSAs\") granted in accordance with the Issuer's long-term incentive plan under the 2026 Omnibus Incentive Plan, approved by stockholders on June 10, 2026. The RSAs shall vest in three equal installments, on each of August 1, 2027, March 23, 2028, and March 23, 2029."}],"balance_after":451648,"source":{"system":"sec-edgar","filing":"0001515156-26-000106","document":"wk-form4_1785889795.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515626000106/wk-form4_1785889795.xml","form_type":"4"}},{"id":703944,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":28966,"kind":"person","name":"Rasmus Robert E.","position":1,"cik":"0001555130","reported_name":"Rasmus Robert E.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2026-07-23T21:12:59.000Z","date":"2026-07-23","kind":"grant","planned":false,"acquired":true,"shares":600000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Represents RSUs granted to Mr. Rasmus under the Issuer's 2026 Omnibus Incentive Plan. Each RSU represents the right to receive one share of the Issuer's Common Stock upon vesting and settlement."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The RSUs vest in two equal installments on each of July 23, 2028, and July 23, 2029."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"The RSUs vest in two equal installments on each of July 23, 2028, and July 23, 2029."}],"balance_after":600000,"derivative":{"underlying":"Common Stock","underlying_shares":600000},"source":{"system":"sec-edgar","filing":"0001515156-26-000099","document":"wk-form4_1784841176.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515626000099/wk-form4_1784841176.xml","form_type":"4"}},{"id":703943,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":28966,"kind":"person","name":"Rasmus Robert E.","position":1,"cik":"0001555130","reported_name":"Rasmus Robert E.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2026-07-23T21:12:59.000Z","date":"2026-07-23","kind":"grant","planned":false,"acquired":true,"shares":600000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Represents RSUs granted to Mr. Rasmus under the Issuer's 2026 Omnibus Incentive Plan. Each RSU represents the right to receive one share of the Issuer's Common Stock upon vesting and settlement."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"200,000 RSUs vest when the 30-Day VWAP equals $3.00 per share; 200,000 RSUs vest when the 30-Day VWAP equals $6.00 per share; and 200,000 RSUs vest when the 30-Day VWAP equals $9.00 per share, in each case, prior to the third anniversary of the date of grant. If the applicable 30-Day VWAP threshold is achieved prior to the first anniversary of the grant date, the RSUs that have become earned upon achievement of such threshold shall not vest until the first anniversary of the grant date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"200,000 RSUs vest when the 30-Day VWAP equals $3.00 per share; 200,000 RSUs vest when the 30-Day VWAP equals $6.00 per share; and 200,000 RSUs vest when the 30-Day VWAP equals $9.00 per share, in each case, prior to the third anniversary of the date of grant. 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Each RSU comprising the Inducement Award represents the right to receive one share of the Issuer's Common Stock upon vesting and settlement."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The two reported transactions involved an amendment of the Inducement Award, originally granted to Mr. Rasmus on July 17, 2023, to extend the expiration date of the Inducement Award from July 17, 2026, to July 17, 2029. The Inducement Award amendment may be deemed a cancellation of the original Inducement Award and grant of a replacement Inducement Award. Of the 400,000 RSUs comprising the Inducement Award, 250,000 RSUs shall vest when the 30-day volume weighted average price of the Issuer's Common Stock (the \"30-Day VWAP\")  equals $10.00 per share and 150,000 RSUs shall vest when the 30-Day VWAP equals $15.00 per share, in each case, prior to July 17, 2029."}],"balance_after":400000,"derivative":{"expiration_date":"2029-07-17","underlying":"Common Stock","underlying_shares":400000},"source":{"system":"sec-edgar","filing":"0001515156-26-000099","document":"wk-form4_1784841176.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515626000099/wk-form4_1784841176.xml","form_type":"4"}},{"id":703941,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":28966,"kind":"person","name":"Rasmus Robert E.","position":1,"cik":"0001555130","reported_name":"Rasmus Robert E.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2026-07-23T21:12:59.000Z","date":"2026-07-17","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":400000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Represents restricted stock units (\"RSUs\") granted to Mr. Rasmus as an employment inducement award (the \"Inducement Award\"). Each RSU comprising the Inducement Award represents the right to receive one share of the Issuer's Common Stock upon vesting and settlement."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The two reported transactions involved an amendment of the Inducement Award, originally granted to Mr. Rasmus on July 17, 2023, to extend the expiration date of the Inducement Award from July 17, 2026, to July 17, 2029. The Inducement Award amendment may be deemed a cancellation of the original Inducement Award and grant of a replacement Inducement Award. 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The restricted stock awards shall vest on July 1, 2027."}],"balance_after":136151,"source":{"system":"sec-edgar","filing":"0001515156-26-000090","document":"wk-form4_1783373531.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515626000090/wk-form4_1783373531.xml","form_type":"4"}},{"id":790162,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":49418,"kind":"person","name":"Voncannon Jay Loring","position":1,"cik":"0002063870","reported_name":"Voncannon Jay Loring","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2026-05-06T21:47:51.000Z","date":"2026-05-04","kind":"sale","planned":false,"acquired":false,"shares":16709,"price":2.27,"value":37929.43,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"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."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This price is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $2.2700 to $2.2822, 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."}],"balance_after":48291,"source":{"system":"sec-edgar","filing":"0001515156-26-000066","document":"wk-form4_1778104068.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2063870/000151515626000066/wk-form4_1778104068.xml","form_type":"4"}},{"id":828100,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":22096,"kind":"person","name":"Wong Joseph M","position":1,"cik":"0001785490","reported_name":"Wong Joseph M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Common 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Each vested PSU represented the right to receive one share of the Issuer's common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"On February 27, 2026, the Compensation Committee of the Board of Directors of the Issuer determined that of the 21,179 performance share units (\"PSUs\") awarded to the reporting person on March 23, 2023 pursuant to the 2023 Long Term Incentive Plan under the Issuer's 2022 Omnibus Equity Incentive Plan, 28,229 PSUs vested based on the achievement of specific performance criteria over a three year performance period ended December 31, 2025. Each vested PSU represented the right to receive one share of the Issuer's common stock."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F3","text":"Represents the maximum number of PSUs that were eligible to vest, which was 200% of the target award."}],"balance_after":0,"derivative":{"expiration_date":"2026-03-10","underlying":"Common Stock","underlying_shares":42358},"source":{"system":"sec-edgar","filing":"0001515156-26-000009","document":"wk-form4_1772575740.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/2021219/000151515626000009/wk-form4_1772575740.xml","form_type":"4"}},{"id":868714,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":26726,"kind":"person","name":"Smith Claiborne Benson","position":1,"cik":"0002021219","reported_name":"Smith Claiborne Benson","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Gen Counsel, Corp Secretary"}}],"security":"Common Stock","published_at":"2026-03-03T22:09:03.000Z","date":"2026-02-27","kind":"tax_withholding","planned":false,"acquired":false,"shares":10176,"price":3.51,"value":35717.76,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"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 27, 2026."}],"balance_after":100491,"source":{"system":"sec-edgar","filing":"0001515156-26-000009","document":"wk-form4_1772575740.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/2021219/000151515626000009/wk-form4_1772575740.xml","form_type":"4"}},{"id":868713,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":26726,"kind":"person","name":"Smith Claiborne Benson","position":1,"cik":"0002021219","reported_name":"Smith Claiborne Benson","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Gen Counsel, Corp Secretary"}}],"security":"Common Stock","published_at":"2026-03-03T22:09:03.000Z","date":"2026-02-27","kind":"exercise","planned":false,"acquired":true,"shares":28229,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On February 27, 2026, the Compensation Committee of the Board of Directors of the Issuer determined that of the 21,179 performance share units (\"PSUs\") awarded to the reporting person on March 23, 2023 pursuant to the 2023 Long Term Incentive Plan under the Issuer's 2022 Omnibus Equity Incentive Plan, 28,229 PSUs vested based on the achievement of specific performance criteria over a three year performance period ended December 31, 2025. Each vested PSU represented the right to receive one share of the Issuer's common stock."}],"balance_after":110667,"source":{"system":"sec-edgar","filing":"0001515156-26-000009","document":"wk-form4_1772575740.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2021219/000151515626000009/wk-form4_1772575740.xml","form_type":"4"}},{"id":1000608,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":49418,"kind":"person","name":"Voncannon Jay Loring","position":1,"cik":"0002063870","reported_name":"Voncannon Jay Loring","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2025-11-13T13:30:37.000Z","date":"2025-11-11","kind":"purchase","planned":false,"acquired":true,"shares":6000,"price":3.5517,"value":21310.2,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"This price is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $3.53 to $3.56. 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."}],"balance_after":65000,"source":{"system":"sec-edgar","filing":"0001515156-25-000148","document":"wk-form4_1763040634.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/2063870/000151515625000148/wk-form4_1763040634.xml","form_type":"4"}},{"id":1000607,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":49418,"kind":"person","name":"Voncannon Jay Loring","position":1,"cik":"0002063870","reported_name":"Voncannon Jay Loring","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2025-11-13T13:30:37.000Z","date":"2025-11-10","kind":"purchase","planned":false,"acquired":true,"shares":9000,"price":3.74,"value":33660.0,"ownership":{"direct":true},"balance_after":59000,"source":{"system":"sec-edgar","filing":"0001515156-25-000148","document":"wk-form4_1763040634.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2063870/000151515625000148/wk-form4_1763040634.xml","form_type":"4"}},{"id":999933,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":32016,"kind":"person","name":"Campbell-Breeden Richard","position":1,"cik":"0001963344","reported_name":"Campbell-Breeden Richard","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2025-11-13T13:30:33.000Z","date":"2025-11-11","kind":"purchase","planned":false,"acquired":true,"shares":28638,"price":3.5438,"value":101487.3444,"ownership":{"direct":false,"nature":"By Omeshorn Holdings Limited."},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"This price is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $3.49 to $3.62, 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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"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."}],"balance_after":254786,"source":{"system":"sec-edgar","filing":"0001515156-25-000147","document":"wk-form4_1763040630.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515625000147/wk-form4_1763040630.xml","form_type":"4"}},{"id":1001636,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":28966,"kind":"person","name":"Rasmus Robert E.","position":1,"cik":"0001555130","reported_name":"Rasmus Robert E.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-11-12T13:30:42.000Z","date":"2025-11-10","kind":"purchase","planned":false,"acquired":true,"shares":50000,"price":3.7918,"value":189590.0,"ownership":{"direct":false,"nature":"By RER Investments LLC"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"This price is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $3.73 to $3.86, 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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"The shares of Common Stock reported on this row are held by RER Investments LLC (\"RER Investments\"). Mr. Rasmus, the Chief Executive Officer and a Director of the Issuer, 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."}],"balance_after":70718,"source":{"system":"sec-edgar","filing":"0001515156-25-000142","document":"wk-form4_1762954239.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515625000142/wk-form4_1762954239.xml","form_type":"4"}},{"id":1022864,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":32017,"kind":"person","name":"McIntyre Julian Alexander","position":1,"cik":"0001963363","reported_name":"McIntyre Julian Alexander","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2025-10-06T21:37:20.000Z","date":"2025-09-25","kind":"other","planned":false,"acquired":false,"shares":30000,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"By Allard Services Limited"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"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."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"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."}],"balance_after":3191289,"source":{"system":"sec-edgar","filing":"0001515156-25-000131","document":"wk-form4_1759786637.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515625000131/wk-form4_1759786637.xml","form_type":"4"}},{"id":1035433,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":63174,"kind":"person","name":"Williamson Jeremy","position":1,"cik":"0001993283","reported_name":"Williamson Jeremy","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operating Officer"}}],"security":"Common Stock","published_at":"2025-09-19T20:37:42.000Z","date":"2025-09-18","kind":"tax_withholding","planned":false,"acquired":false,"shares":2029,"price":7,"value":14203.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"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."}],"balance_after":135288,"source":{"system":"sec-edgar","filing":"0001515156-25-000129","document":"wk-form4_1758314259.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515625000129/wk-form4_1758314259.xml","form_type":"4"}},{"id":1073000,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":22096,"kind":"person","name":"Wong Joseph M","position":1,"cik":"0001785490","reported_name":"Wong Joseph M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Common Stock","published_at":"2025-08-06T21:37:58.000Z","date":"2025-08-04","kind":"sale","planned":false,"acquired":false,"shares":3052,"price":5.2,"value":15870.4,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"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."}],"balance_after":367738,"source":{"system":"sec-edgar","filing":"0001515156-25-000107","document":"wk-form4_1754516274.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515625000107/wk-form4_1754516274.xml","form_type":"4"}},{"id":1073233,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":26726,"kind":"person","name":"Smith Claiborne Benson","position":1,"cik":"0002021219","reported_name":"Smith Claiborne Benson","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Gen Counsel, Corp Secretary"}}],"security":"Common Stock","published_at":"2025-08-06T21:37:51.000Z","date":"2025-08-04","kind":"sale","planned":false,"acquired":false,"shares":2591,"price":5.2,"value":13473.2,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"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."}],"balance_after":82438,"source":{"system":"sec-edgar","filing":"0001515156-25-000106","document":"wk-form4_1754516266.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2021219/000151515625000106/wk-form4_1754516266.xml","form_type":"4"}},{"id":1072999,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":63174,"kind":"person","name":"Williamson Jeremy","position":1,"cik":"0001993283","reported_name":"Williamson Jeremy","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operating Officer"}}],"security":"Common Stock","published_at":"2025-08-06T21:37:35.000Z","date":"2025-08-04","kind":"sale","planned":false,"acquired":false,"shares":1782,"price":5.2,"value":9266.4,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"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."}],"balance_after":137317,"source":{"system":"sec-edgar","filing":"0001515156-25-000104","document":"wk-form4_1754516251.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515625000104/wk-form4_1754516251.xml","form_type":"4"}},{"id":1073221,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":56077,"kind":"person","name":"Hansen Stacia","position":1,"cik":"0001999392","reported_name":"Hansen Stacia","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Accounting Officer"}}],"security":"Common Stock","published_at":"2025-08-06T17:37:42.000Z","date":"2025-08-04","kind":"sale","planned":false,"acquired":false,"shares":2742,"price":5.2,"value":14258.4,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"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."}],"balance_after":73199,"source":{"system":"sec-edgar","filing":"0001515156-25-000105","document":"wk-form4_1754516258.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1999392/000151515625000105/wk-form4_1754516258.xml","form_type":"4"}},{"id":1091896,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":32017,"kind":"person","name":"McIntyre Julian Alexander","position":1,"cik":"0001963363","reported_name":"McIntyre Julian Alexander","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2025-07-03T21:01:23.000Z","date":"2025-07-01","kind":"grant","planned":false,"acquired":true,"shares":21828,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"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."}],"balance_after":58978,"source":{"system":"sec-edgar","filing":"0001515156-25-000097","document":"wk-form4_1751576477.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515625000097/wk-form4_1751576477.xml","form_type":"4"}},{"id":1091895,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":32016,"kind":"person","name":"Campbell-Breeden Richard","position":1,"cik":"0001963344","reported_name":"Campbell-Breeden Richard","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2025-07-03T21:01:12.000Z","date":"2025-07-01","kind":"grant","planned":false,"acquired":true,"shares":29104,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"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."}],"balance_after":86868,"source":{"system":"sec-edgar","filing":"0001515156-25-000096","document":"wk-form4_1751576466.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515625000096/wk-form4_1751576466.xml","form_type":"4"}},{"id":1091894,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":32018,"kind":"person","name":"Blank Jeremy","position":1,"cik":"0001962987","reported_name":"Blank Jeremy","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2025-07-03T21:01:02.000Z","date":"2025-07-01","kind":"grant","planned":false,"acquired":true,"shares":29104,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"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."}],"balance_after":78762,"source":{"system":"sec-edgar","filing":"0001515156-25-000095","document":"wk-form4_1751576455.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515625000095/wk-form4_1751576455.xml","form_type":"4"}},{"id":1092229,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":32098,"kind":"person","name":"EICHER CAROL S","position":1,"cik":"0001434811","reported_name":"EICHER CAROL S","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2025-07-03T21:00:36.000Z","date":"2025-07-01","kind":"grant","planned":false,"acquired":true,"shares":14552,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"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."}],"balance_after":96510,"source":{"system":"sec-edgar","filing":"0001515156-25-000094","document":"wk-form4_1751576429.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1434811/000151515625000094/wk-form4_1751576429.xml","form_type":"4"}},{"id":1092385,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":19484,"kind":"person","name":"Bergman Laurie","position":1,"cik":"0001672722","reported_name":"Bergman Laurie","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2025-07-03T21:00:21.000Z","date":"2025-07-01","kind":"grant","planned":false,"acquired":true,"shares":14552,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"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."}],"balance_after":51702,"source":{"system":"sec-edgar","filing":"0001515156-25-000093","document":"wk-form4_1751576411.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1672722/000151515625000093/wk-form4_1751576411.xml","form_type":"4"}},{"id":1131580,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":28966,"kind":"person","name":"Rasmus Robert E.","position":1,"cik":"0001555130","reported_name":"Rasmus Robert E.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-05-28T20:45:34.000Z","date":"2025-05-23","kind":"purchase","planned":false,"acquired":true,"shares":25000,"price":4.1,"value":102500.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"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."}],"balance_after":480782,"source":{"system":"sec-edgar","filing":"0001515156-25-000078","document":"wk-form4_1748465128.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515625000078/wk-form4_1748465128.xml","form_type":"4"}},{"id":1131579,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":32018,"kind":"person","name":"Blank Jeremy","position":1,"cik":"0001962987","reported_name":"Blank Jeremy","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2025-05-28T20:45:13.000Z","date":"2025-05-23","kind":"purchase","planned":false,"acquired":true,"shares":50000,"price":4.1,"value":205000.0,"ownership":{"direct":false,"nature":"By Community Master Fund LP"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"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."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"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."}],"balance_after":374955,"source":{"system":"sec-edgar","filing":"0001515156-25-000077","document":"wk-form4_1748465107.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515625000077/wk-form4_1748465107.xml","form_type":"4"}},{"id":1132996,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":32016,"kind":"person","name":"Campbell-Breeden Richard","position":1,"cik":"0001963344","reported_name":"Campbell-Breeden Richard","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2025-05-27T20:45:28.000Z","date":"2025-05-23","kind":"purchase","planned":false,"acquired":true,"shares":75000,"price":4.1,"value":307500.0,"ownership":{"direct":false,"nature":"By Omeshorn Holdings Limited."},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"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."}],"balance_after":226148,"source":{"system":"sec-edgar","filing":"0001515156-25-000074","document":"wk-form4_1748378721.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515625000074/wk-form4_1748378721.xml","form_type":"4"}},{"id":1140105,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":22096,"kind":"person","name":"Wong Joseph M","position":1,"cik":"0001785490","reported_name":"Wong Joseph M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Common Stock","published_at":"2025-05-20T20:30:21.000Z","date":"2025-05-16","kind":"purchase","planned":false,"acquired":true,"shares":16000,"price":4.61,"value":73760.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"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."}],"balance_after":370790,"source":{"system":"sec-edgar","filing":"0001515156-25-000071","document":"wk-form4_1747773014.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515625000071/wk-form4_1747773014.xml","form_type":"4"}},{"id":1147042,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":28966,"kind":"person","name":"Rasmus Robert E.","position":1,"cik":"0001555130","reported_name":"Rasmus Robert E.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-05-15T20:30:59.000Z","date":"2025-05-14","kind":"purchase","planned":false,"acquired":true,"shares":12535,"price":3.93,"value":49262.55,"ownership":{"direct":false,"nature":"RER Investments LLC"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"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."}],"balance_after":20718,"source":{"system":"sec-edgar","filing":"0001515156-25-000069","document":"wk-form4_1747341051.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515625000069/wk-form4_1747341051.xml","form_type":"4"}},{"id":1147041,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":28966,"kind":"person","name":"Rasmus Robert E.","position":1,"cik":"0001555130","reported_name":"Rasmus Robert E.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-05-15T20:30:59.000Z","date":"2025-05-13","kind":"purchase","planned":false,"acquired":true,"shares":2921,"price":4,"value":11684.0,"ownership":{"direct":false,"nature":"RER Investments LLC"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"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."}],"balance_after":8183,"source":{"system":"sec-edgar","filing":"0001515156-25-000069","document":"wk-form4_1747341051.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515625000069/wk-form4_1747341051.xml","form_type":"4"}},{"id":1148881,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":63174,"kind":"person","name":"Williamson Jeremy","position":1,"cik":"0001993283","reported_name":"Williamson Jeremy","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operating Officer"}}],"security":"Common Stock","published_at":"2025-05-14T20:30:21.000Z","date":"2025-05-12","kind":"purchase","planned":false,"acquired":true,"shares":400,"price":4.02,"value":1608.0,"ownership":{"direct":true},"balance_after":139099,"source":{"system":"sec-edgar","filing":"0001515156-25-000067","document":"wk-form4_1747254615.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515625000067/wk-form4_1747254615.xml","form_type":"4"}},{"id":1150458,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":28966,"kind":"person","name":"Rasmus Robert E.","position":1,"cik":"0001555130","reported_name":"Rasmus Robert E.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-05-13T20:30:33.000Z","date":"2025-05-12","kind":"purchase","planned":false,"acquired":true,"shares":4680,"price":4,"value":18720.0,"ownership":{"direct":false,"nature":"RER Investments LLC"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"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."}],"balance_after":5262,"source":{"system":"sec-edgar","filing":"0001515156-25-000064","document":"wk-form4_1747168224.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515625000064/wk-form4_1747168224.xml","form_type":"4"}},{"id":1150457,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":28966,"kind":"person","name":"Rasmus Robert E.","position":1,"cik":"0001555130","reported_name":"Rasmus Robert E.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-05-13T20:30:33.000Z","date":"2025-05-09","kind":"purchase","planned":false,"acquired":true,"shares":582,"price":3.6,"value":2095.2,"ownership":{"direct":false,"nature":"RER Investments LLC"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"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."}],"balance_after":582,"source":{"system":"sec-edgar","filing":"0001515156-25-000064","document":"wk-form4_1747168224.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515625000064/wk-form4_1747168224.xml","form_type":"4"}},{"id":1177834,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":49418,"kind":"person","name":"Voncannon Jay Loring","position":1,"cik":"0002063870","reported_name":"Voncannon Jay Loring","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2025-04-04T22:06:56.000Z","date":"2025-04-02","kind":"grant","planned":false,"acquired":true,"shares":50000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"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. 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The restricted stock awards shall vest in three equal annual installments, beginning on the first anniversary of the grant date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"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."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"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."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F4","text":"Represents the maximum number of PSUs that will vest, if at all, which is 200% of the target award."}],"balance_after":4990,"derivative":{"expiration_date":"2028-03-10","underlying":"Common Stock","underlying_shares":9980},"source":{"system":"sec-edgar","filing":"0001515156-25-000024","document":"wk-form4_1742939913.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515625000024/wk-form4_1742939913.xml","form_type":"4"}},{"id":1192012,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":28966,"kind":"person","name":"Rasmus Robert E.","position":1,"cik":"0001555130","reported_name":"Rasmus Robert E.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2025-03-25T21:58:39.000Z","date":"2025-03-23","kind":"grant","planned":false,"acquired":true,"shares":4990,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"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."}],"balance_after":455782,"source":{"system":"sec-edgar","filing":"0001515156-25-000024","document":"wk-form4_1742939913.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515625000024/wk-form4_1742939913.xml","form_type":"4"}},{"id":1192428,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":26726,"kind":"person","name":"Smith Claiborne Benson","position":1,"cik":"0002021219","reported_name":"Smith Claiborne Benson","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Gen Counsel, Corp Secretary"}}],"security":"Performance Share Units","published_at":"2025-03-25T21:58:19.000Z","date":"2025-03-23","kind":"grant","planned":false,"acquired":true,"shares":23952,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"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."},{"field":"shares","element":"transactionShares","label":"F1","text":"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."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"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."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"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."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F4","text":"Represents the maximum number of PSUs that will vest, if at all, which is 200% of the target award."}],"balance_after":23952,"derivative":{"expiration_date":"2028-03-10","underlying":"Common Stock","underlying_shares":47904},"source":{"system":"sec-edgar","filing":"0001515156-25-000022","document":"wk-form4_1742939893.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/2021219/000151515625000022/wk-form4_1742939893.xml","form_type":"4"}},{"id":1192427,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":26726,"kind":"person","name":"Smith Claiborne Benson","position":1,"cik":"0002021219","reported_name":"Smith Claiborne Benson","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Gen Counsel, Corp Secretary"}}],"security":"Common Stock","published_at":"2025-03-25T21:58:19.000Z","date":"2025-03-24","kind":"sale","planned":false,"acquired":false,"shares":5202,"price":4.68,"value":24345.36,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"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."}],"balance_after":85029,"source":{"system":"sec-edgar","filing":"0001515156-25-000022","document":"wk-form4_1742939893.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/2021219/000151515625000022/wk-form4_1742939893.xml","form_type":"4"}},{"id":1192426,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":26726,"kind":"person","name":"Smith Claiborne Benson","position":1,"cik":"0002021219","reported_name":"Smith Claiborne Benson","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Gen Counsel, Corp Secretary"}}],"security":"Common Stock","published_at":"2025-03-25T21:58:19.000Z","date":"2025-03-23","kind":"grant","planned":false,"acquired":true,"shares":23952,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"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."}],"balance_after":90231,"source":{"system":"sec-edgar","filing":"0001515156-25-000022","document":"wk-form4_1742939893.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2021219/000151515625000022/wk-form4_1742939893.xml","form_type":"4"}},{"id":1192011,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":63174,"kind":"person","name":"Williamson Jeremy","position":1,"cik":"0001993283","reported_name":"Williamson Jeremy","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operating Officer"}}],"security":"Performance Share Units","published_at":"2025-03-25T21:58:09.000Z","date":"2025-03-23","kind":"grant","planned":false,"acquired":true,"shares":28069,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"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."},{"field":"shares","element":"transactionShares","label":"F1","text":"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."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"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."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"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."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F4","text":"Represents the maximum number of PSUs that will vest, if at all, which is 200% of the target award."}],"balance_after":28069,"derivative":{"expiration_date":"2028-03-10","underlying":"Common Stock","underlying_shares":56138},"source":{"system":"sec-edgar","filing":"0001515156-25-000021","document":"wk-form4_1742939882.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515625000021/wk-form4_1742939882.xml","form_type":"4"}},{"id":1192010,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":63174,"kind":"person","name":"Williamson Jeremy","position":1,"cik":"0001993283","reported_name":"Williamson Jeremy","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operating Officer"}}],"security":"Common Stock","published_at":"2025-03-25T21:58:09.000Z","date":"2025-03-24","kind":"sale","planned":false,"acquired":false,"shares":5233,"price":4.68,"value":24490.44,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"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."}],"balance_after":138699,"source":{"system":"sec-edgar","filing":"0001515156-25-000021","document":"wk-form4_1742939882.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515625000021/wk-form4_1742939882.xml","form_type":"4"}},{"id":1192009,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":63174,"kind":"person","name":"Williamson Jeremy","position":1,"cik":"0001993283","reported_name":"Williamson Jeremy","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operating Officer"}}],"security":"Common Stock","published_at":"2025-03-25T21:58:09.000Z","date":"2025-03-23","kind":"grant","planned":false,"acquired":true,"shares":28069,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"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."}],"balance_after":143932,"source":{"system":"sec-edgar","filing":"0001515156-25-000021","document":"wk-form4_1742939882.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515625000021/wk-form4_1742939882.xml","form_type":"4"}},{"id":1192008,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":22096,"kind":"person","name":"Wong Joseph M","position":1,"cik":"0001785490","reported_name":"Wong Joseph M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Performance Share Units","published_at":"2025-03-25T21:57:58.000Z","date":"2025-03-23","kind":"grant","planned":false,"acquired":true,"shares":26198,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"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."},{"field":"shares","element":"transactionShares","label":"F1","text":"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."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"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."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"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."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F4","text":"Represents the maximum number of PSUs that will vest, if at all, which is 200% of the target award."}],"balance_after":26198,"derivative":{"expiration_date":"2028-03-10","underlying":"Common Stock","underlying_shares":52396},"source":{"system":"sec-edgar","filing":"0001515156-25-000020","document":"wk-form4_1742939871.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515625000020/wk-form4_1742939871.xml","form_type":"4"}},{"id":1192007,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":22096,"kind":"person","name":"Wong Joseph M","position":1,"cik":"0001785490","reported_name":"Wong Joseph M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Common Stock","published_at":"2025-03-25T21:57:58.000Z","date":"2025-03-24","kind":"sale","planned":false,"acquired":false,"shares":6596,"price":4.68,"value":30869.28,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"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."}],"balance_after":354790,"source":{"system":"sec-edgar","filing":"0001515156-25-000020","document":"wk-form4_1742939871.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515625000020/wk-form4_1742939871.xml","form_type":"4"}},{"id":1192006,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":22096,"kind":"person","name":"Wong Joseph M","position":1,"cik":"0001785490","reported_name":"Wong Joseph M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Common Stock","published_at":"2025-03-25T21:57:58.000Z","date":"2025-03-23","kind":"grant","planned":false,"acquired":true,"shares":26198,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"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."}],"balance_after":361386,"source":{"system":"sec-edgar","filing":"0001515156-25-000020","document":"wk-form4_1742939871.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515625000020/wk-form4_1742939871.xml","form_type":"4"}},{"id":1192413,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":56077,"kind":"person","name":"Hansen Stacia","position":1,"cik":"0001999392","reported_name":"Hansen Stacia","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Accounting Officer"}}],"security":"Performance Share Units","published_at":"2025-03-25T17:58:29.000Z","date":"2025-03-23","kind":"grant","planned":false,"acquired":true,"shares":22455,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"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."},{"field":"shares","element":"transactionShares","label":"F1","text":"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."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"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."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"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."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F4","text":"Represents the maximum number of PSUs that will vest, if at all, which is 200% of the target award."}],"balance_after":22455,"derivative":{"expiration_date":"2028-03-10","underlying":"Common Stock","underlying_shares":44910},"source":{"system":"sec-edgar","filing":"0001515156-25-000023","document":"wk-form4_1742939903.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1999392/000151515625000023/wk-form4_1742939903.xml","form_type":"4"}},{"id":1192412,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":56077,"kind":"person","name":"Hansen Stacia","position":1,"cik":"0001999392","reported_name":"Hansen Stacia","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Accounting Officer"}}],"security":"Common Stock","published_at":"2025-03-25T17:58:29.000Z","date":"2025-03-24","kind":"sale","planned":false,"acquired":false,"shares":3557,"price":4.68,"value":16646.76,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"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."}],"balance_after":75941,"source":{"system":"sec-edgar","filing":"0001515156-25-000023","document":"wk-form4_1742939903.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1999392/000151515625000023/wk-form4_1742939903.xml","form_type":"4"}},{"id":1192411,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":56077,"kind":"person","name":"Hansen Stacia","position":1,"cik":"0001999392","reported_name":"Hansen Stacia","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Accounting Officer"}}],"security":"Common Stock","published_at":"2025-03-25T17:58:29.000Z","date":"2025-03-23","kind":"grant","planned":false,"acquired":true,"shares":22455,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"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."}],"balance_after":79498,"source":{"system":"sec-edgar","filing":"0001515156-25-000023","document":"wk-form4_1742939903.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1999392/000151515625000023/wk-form4_1742939903.xml","form_type":"4"}},{"id":1266813,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":22096,"kind":"person","name":"Wong Joseph M","position":1,"cik":"0001785490","reported_name":"Wong Joseph M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Performance Share Unit","published_at":"2025-02-14T22:37:10.000Z","date":"2025-02-12","kind":"exercise","planned":false,"acquired":false,"shares":33420,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"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."},{"field":"shares","element":"transactionShares","label":"F3","text":"Represents the maximum number of PSUs eligible to vest, which is 200% of the target award."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"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."}],"balance_after":0,"derivative":{"expiration_date":"2025-03-10","underlying":"Common Stock","underlying_shares":33420},"source":{"system":"sec-edgar","filing":"0001515156-25-000007","document":"wk-form4_1739572623.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515625000007/wk-form4_1739572623.xml","form_type":"4"}},{"id":1266812,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":22096,"kind":"person","name":"Wong Joseph M","position":1,"cik":"0001785490","reported_name":"Wong Joseph M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Common Stock","published_at":"2025-02-14T22:37:10.000Z","date":"2025-02-12","kind":"tax_withholding","planned":false,"acquired":false,"shares":6995,"price":5.93,"value":41480.35,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"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."}],"balance_after":335188,"source":{"system":"sec-edgar","filing":"0001515156-25-000007","document":"wk-form4_1739572623.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515625000007/wk-form4_1739572623.xml","form_type":"4"}},{"id":1266811,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":22096,"kind":"person","name":"Wong Joseph M","position":1,"cik":"0001785490","reported_name":"Wong Joseph M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Common Stock","published_at":"2025-02-14T22:37:10.000Z","date":"2025-02-12","kind":"exercise","planned":false,"acquired":true,"shares":14728,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"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."}],"balance_after":342183,"source":{"system":"sec-edgar","filing":"0001515156-25-000007","document":"wk-form4_1739572623.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515625000007/wk-form4_1739572623.xml","form_type":"4"}},{"id":1348935,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":32018,"kind":"person","name":"Blank Jeremy","position":1,"cik":"0001962987","reported_name":"Blank Jeremy","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2024-11-27T21:34:52.000Z","date":"2024-11-26","kind":"other","planned":false,"acquired":true,"shares":132046,"ownership":{"direct":false,"nature":"By YGF 100 LP."},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"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."}],"balance_after":1987434,"source":{"system":"sec-edgar","filing":"0001515156-24-000185","document":"wk-form4_1732743285.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515624000185/wk-form4_1732743285.xml","form_type":"4"}},{"id":1348934,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":32017,"kind":"person","name":"McIntyre Julian Alexander","position":1,"cik":"0001963363","reported_name":"McIntyre Julian Alexander","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2024-11-27T21:34:41.000Z","date":"2024-11-26","kind":"other","planned":false,"acquired":true,"shares":1345,"ownership":{"direct":false,"nature":"By Stannard Limited"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"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."}],"balance_after":21908,"source":{"system":"sec-edgar","filing":"0001515156-24-000184","document":"wk-form4_1732743275.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515624000184/wk-form4_1732743275.xml","form_type":"4"}},{"id":1348933,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":32017,"kind":"person","name":"McIntyre Julian Alexander","position":1,"cik":"0001963363","reported_name":"McIntyre Julian Alexander","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2024-11-27T21:34:41.000Z","date":"2024-11-26","kind":"other","planned":false,"acquired":true,"shares":33410,"ownership":{"direct":false,"nature":"By MWB Limited"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"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."}],"balance_after":382042,"source":{"system":"sec-edgar","filing":"0001515156-24-000184","document":"wk-form4_1732743275.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515624000184/wk-form4_1732743275.xml","form_type":"4"}},{"id":1348932,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":32017,"kind":"person","name":"McIntyre Julian Alexander","position":1,"cik":"0001963363","reported_name":"McIntyre Julian Alexander","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2024-11-27T21:34:41.000Z","date":"2024-11-26","kind":"other","planned":false,"acquired":true,"shares":3763,"ownership":{"direct":false,"nature":"By Markham Fuels Management Limited"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"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."}],"balance_after":43034,"source":{"system":"sec-edgar","filing":"0001515156-24-000184","document":"wk-form4_1732743275.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515624000184/wk-form4_1732743275.xml","form_type":"4"}},{"id":1348931,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":32016,"kind":"person","name":"Campbell-Breeden Richard","position":1,"cik":"0001963344","reported_name":"Campbell-Breeden Richard","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2024-11-27T21:34:29.000Z","date":"2024-11-26","kind":"other","planned":false,"acquired":true,"shares":708,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"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."}],"balance_after":57764,"source":{"system":"sec-edgar","filing":"0001515156-24-000183","document":"wk-form4_1732743262.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515624000183/wk-form4_1732743262.xml","form_type":"4"}},{"id":1348930,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":32016,"kind":"person","name":"Campbell-Breeden Richard","position":1,"cik":"0001963344","reported_name":"Campbell-Breeden Richard","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2024-11-27T21:34:29.000Z","date":"2024-11-26","kind":"other","planned":false,"acquired":true,"shares":8606,"ownership":{"direct":false,"nature":"By Omeshorn Holdings Limited."},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"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."}],"balance_after":151148,"source":{"system":"sec-edgar","filing":"0001515156-24-000183","document":"wk-form4_1732743262.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515624000183/wk-form4_1732743262.xml","form_type":"4"}},{"id":1355571,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":32018,"kind":"person","name":"Blank Jeremy","position":1,"cik":"0001962987","reported_name":"Blank Jeremy","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2024-11-21T21:46:11.000Z","date":"2024-11-20","kind":"other","planned":false,"acquired":true,"shares":4146,"ownership":{"direct":false,"nature":"By Community SPV GP LP."},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"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."}],"balance_after":47416,"source":{"system":"sec-edgar","filing":"0001515156-24-000179","document":"wk-form4_1732225564.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515624000179/wk-form4_1732225564.xml","form_type":"4"}},{"id":1355570,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":32017,"kind":"person","name":"McIntyre Julian Alexander","position":1,"cik":"0001963363","reported_name":"McIntyre Julian Alexander","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2024-11-21T21:46:00.000Z","date":"2024-11-20","kind":"other","planned":false,"acquired":true,"shares":137935,"ownership":{"direct":false,"nature":"By Allard Services Limited"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"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."}],"balance_after":2774305,"source":{"system":"sec-edgar","filing":"0001515156-24-000178","document":"wk-form4_1732225552.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515624000178/wk-form4_1732225552.xml","form_type":"4"}},{"id":1399931,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":28966,"kind":"person","name":"Rasmus Robert E.","position":1,"cik":"0001555130","reported_name":"Rasmus Robert E.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2024-09-24T12:31:58.000Z","date":"2024-09-23","kind":"purchase","planned":false,"acquired":true,"shares":25000,"price":5.25,"value":131250.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares were purchased in the Issuer's underwritten public offering of common stock."}],"balance_after":450792,"source":{"system":"sec-edgar","filing":"0001515156-24-000166","document":"wk-form4_1727181112.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515624000166/wk-form4_1727181112.xml","form_type":"4"}},{"id":1403267,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":63174,"kind":"person","name":"Williamson Jeremy","position":1,"cik":"0001993283","reported_name":"Williamson Jeremy","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operating Officer"}}],"security":"Common Stock","published_at":"2024-09-18T21:32:44.000Z","date":"2024-09-18","kind":"tax_withholding","planned":false,"acquired":false,"shares":2029,"price":6.11,"value":12397.19,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"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."}],"balance_after":115863,"source":{"system":"sec-edgar","filing":"0001515156-24-000156","document":"wk-form4_1726695158.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1515156/000151515624000156/wk-form4_1726695158.xml","form_type":"4"}},{"id":1441076,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":26726,"kind":"person","name":"Smith Claiborne Benson","position":1,"cik":"0002021219","reported_name":"Smith Claiborne Benson","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Gen Counsel, Corp Secretary"}}],"security":"Performance Share Units","published_at":"2024-08-05T22:46:14.000Z","date":"2024-08-01","kind":"grant","planned":false,"acquired":true,"shares":19810,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"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."},{"field":"shares","element":"transactionShares","label":"F1","text":"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."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"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."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"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."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F3","text":"Represents the maximum number of PSUs that will vest, if at all, which is 200% of the target award."}],"balance_after":19810,"derivative":{"expiration_date":"2027-03-10","underlying":"Common Stock","underlying_shares":39620},"source":{"system":"sec-edgar","filing":"0001515156-24-000139","document":"wk-form4_1722897969.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/2021219/000151515624000139/wk-form4_1722897969.xml","form_type":"4"}},{"id":1441075,"issuer":{"id":2240,"kind":"organization","name":"Arq, Inc.","symbol":"ARQ"},"owners":[{"id":26726,"kind":"person","name":"Smith Claiborne Benson","position":1,"cik":"0002021219","reported_name":"Smith Claiborne Benson","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Gen Counsel, Corp Secretary"}}],"security":"Common Stock","published_at":"2024-08-05T22:46:14.000Z","date":"2024-08-01","kind":"grant","planned":false,"acquired":true,"shares":19810,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"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."}],"balance_after":66279,"source":{"system":"sec-edgar","filing":"0001515156-24-000139","document":"wk-form4_1722897969.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2021219/000151515624000139/wk-form4_1722897969.xml","form_type":"4"}}],"next_cursor":"2024-08-05T22:46:14.000000Z,1441075"}