{"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":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"}}]}