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The reporting person undertakes to provide\nthe 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\nthe range set forth in this footnote."}],"balance_after":509626,"source":{"system":"sec-edgar","filing":"0001628280-26-060916","document":"wk-form4_1788898576.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1933088/000162828026060916/wk-form4_1788898576.xml","form_type":"4"}},{"id":551,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":520,"kind":"person","name":"Comora Adam","position":1,"cik":"0001933088","reported_name":"Comora Adam","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Co-Chief Executive Officer"}}],"security":"Class A common stock","published_at":"2026-09-02T20:21:09.000Z","date":"2026-09-01","kind":"purchase","planned":false,"acquired":true,"shares":50000,"price":1.93,"value":96500.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging between $1.90 and $1.97. The reporting person undertakes to provide\nthe 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\nthe range set forth in this footnote."}],"balance_after":489626,"source":{"system":"sec-edgar","filing":"0001628280-26-060113","document":"wk-form4_1788380466.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1933088/000162828026060113/wk-form4_1788380466.xml","form_type":"4"}},{"id":537,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":502,"kind":"person","name":"Nisar Nadeem","position":1,"cik":"0001827382","reported_name":"Nisar Nadeem","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A common 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average price. These shares were purchased in multiple transactions at prices ranging between $1.98 and $2.02. The reporting person undertakes to provide 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 footnote."}],"balance_after":245672,"source":{"system":"sec-edgar","filing":"0001628280-26-037345","document":"wk-form4_1779396200.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1839919/000162828026037345/wk-form4_1779396200.xml","form_type":"4"}},{"id":767292,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":45083,"kind":"person","name":"Dols Scott V.","position":1,"cik":"0001839919","reported_name":"Dols Scott V.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A common stock","published_at":"2026-05-21T20:43:22.000Z","date":"2026-05-20","kind":"purchase","planned":false,"acquired":true,"shares":4346,"price":2.06,"value":8952.76,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging between $2.02 and $2.09. The reporting person undertakes to\nprovide 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\nprice within the range set forth in this footnote."}],"balance_after":237726,"source":{"system":"sec-edgar","filing":"0001628280-26-037345","document":"wk-form4_1779396200.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1839919/000162828026037345/wk-form4_1779396200.xml","form_type":"4"}},{"id":769342,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":45083,"kind":"person","name":"Dols Scott V.","position":1,"cik":"0001839919","reported_name":"Dols Scott V.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A common stock","published_at":"2026-05-20T20:17:28.000Z","date":"2026-05-19","kind":"purchase","planned":false,"acquired":true,"shares":25105,"price":2.05,"value":51465.25,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging between $1.99 and $2.10. The reporting person undertakes to provide 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 footnote."}],"balance_after":233380,"source":{"system":"sec-edgar","filing":"0001628280-26-036902","document":"wk-form4_1779308246.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1839919/000162828026036902/wk-form4_1779308246.xml","form_type":"4"}},{"id":769341,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":45083,"kind":"person","name":"Dols Scott V.","position":1,"cik":"0001839919","reported_name":"Dols Scott V.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A common stock","published_at":"2026-05-20T20:17:28.000Z","date":"2026-05-18","kind":"purchase","planned":false,"acquired":true,"shares":12603,"price":2.02,"value":25458.06,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging between $1.94 and $2.06. The reporting person undertakes to provide 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 footnote."}],"balance_after":208275,"source":{"system":"sec-edgar","filing":"0001628280-26-036902","document":"wk-form4_1779308246.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1839919/000162828026036902/wk-form4_1779308246.xml","form_type":"4"}},{"id":769394,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":502,"kind":"person","name":"Nisar Nadeem","position":1,"cik":"0001827382","reported_name":"Nisar Nadeem","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A common 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footnote."}],"balance_after":227785,"source":{"system":"sec-edgar","filing":"0001628280-26-036090","document":"wk-form4_1779141056.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1827382/000162828026036090/wk-form4_1779141056.xml","form_type":"4"}},{"id":774239,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":502,"kind":"person","name":"Nisar Nadeem","position":1,"cik":"0001827382","reported_name":"Nisar Nadeem","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A common stock","published_at":"2026-05-18T21:50:59.000Z","date":"2026-05-14","kind":"purchase","planned":false,"acquired":true,"shares":10000,"price":2.05,"value":20500.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The reporting person undertakes to provide 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 footnote."}],"balance_after":217785,"source":{"system":"sec-edgar","filing":"0001628280-26-036090","document":"wk-form4_1779141056.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1827382/000162828026036090/wk-form4_1779141056.xml","form_type":"4"}},{"id":818628,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54152,"kind":"person","name":"Coghlin John","position":1,"cik":"0001930669","reported_name":"Coghlin John","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel"}}],"security":"Stock options (right to buy)","published_at":"2026-04-02T20:42:28.000Z","date":"2026-03-31","kind":"grant","planned":false,"acquired":true,"shares":90656,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F8","text":"Granted pursuant to the Issuer's 2022 Omnibus Equity Incentive Plan (the \"Plan\")."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F9","text":"The Reporting Person was granted an option to purchase shares of the Issuer's Class A common stock (the \"Option\") at an exercise price of $2.52 per share, which was the volume weighted average price of the Issuer's Class A common stock for the five days immediately preceding March 31, 2026, as quoted on the Nasdaq Stock Market. The Option vests in three (3) equal installments on each of the following dates: (i) March 31, 2027, (ii) March 31, 2028, and (iii) March 31, 2029, provided, that the Reporting Person continues to provide services to the Issuer through the applicable vesting date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F10","text":"In the event that the Reporting Person's employment is terminated by reason of the Reporting Person's disability or termination without cause, the Options shall vest with respect to the number of shares of Class A common stock that would have vested upon the next vesting date following such termination, had the Reporting Person remained an employee."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F11","text":"Notwithstanding the foregoing, upon the occurrence of a termination of employment by reason of the Reporting Person's (i) termination without cause; or (ii) resignation for good reason, in connection with or within the 24 months following the consummation of a Change in Control (as defined in the Plan and the relevant award agreement), any unvested portion of the Option shall accelerate and vest in full."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F12","text":"Upon the occurrence of a termination by reason of the Reporting Person's death, any unvested portion of the Option shall accelerate and vest in full."}],"balance_after":90656,"derivative":{"exercise_price":2.52,"expiration_date":"2036-03-31","underlying":"Class A common stock","underlying_shares":90656},"source":{"system":"sec-edgar","filing":"0001628280-26-023260","document":"wk-form4_1775162545.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":14,"url":"https://www.sec.gov/Archives/edgar/data/1842279/000162828026023260/wk-form4_1775162545.xml","form_type":"4"}},{"id":818627,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54152,"kind":"person","name":"Coghlin John","position":1,"cik":"0001930669","reported_name":"Coghlin John","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel"}}],"security":"Restricted Stock Units","published_at":"2026-04-02T20:42:28.000Z","date":"2026-03-31","kind":"grant","planned":false,"acquired":true,"shares":162292,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F7","text":"On March 31, 2026, the Reporting Person was granted 162,292 RSUs pursuant to the Plan. RSUs are scheduled to vest in three (3) equal installments on each of the following dates: (i) March 31, 2027, (ii) March 31, 2028, and (iii) March 31, 2029, provided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F7","text":"On March 31, 2026, the Reporting Person was granted 162,292 RSUs pursuant to the Plan. RSUs are scheduled to vest in three (3) equal installments on each of the following dates: (i) March 31, 2027, (ii) March 31, 2028, and (iii) March 31, 2029, provided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F7","text":"On March 31, 2026, the Reporting Person was granted 162,292 RSUs pursuant to the Plan. RSUs are scheduled to vest in three (3) equal installments on each of the following dates: (i) March 31, 2027, (ii) March 31, 2028, and (iii) March 31, 2029, provided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock."}],"balance_after":162292,"derivative":{"underlying":"Class A common stock","underlying_shares":162292},"source":{"system":"sec-edgar","filing":"0001628280-26-023260","document":"wk-form4_1775162545.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":13,"url":"https://www.sec.gov/Archives/edgar/data/1842279/000162828026023260/wk-form4_1775162545.xml","form_type":"4"}},{"id":818626,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54152,"kind":"person","name":"Coghlin John","position":1,"cik":"0001930669","reported_name":"Coghlin John","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel"}}],"security":"Restricted Stock Units","published_at":"2026-04-02T20:42:28.000Z","date":"2026-03-31","kind":"exercise","planned":false,"acquired":false,"shares":10847,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A common stock on their scheduled vesting date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"On March 31, 2023 the Reporting Person was awarded a target number of performance-based restricted stock units (\"PRSUs\"), subject to satisfaction of performance conditions as determined by the Board of Directors of OPAL Fuels Inc. Each PRSU represented the right to receive, at settlement, one share of Class A common stock. The amount shown represents the actual number of units earned by the Reporting Person pursuant to the satisfaction of performance conditions."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F6","text":"On March 31, 2023 the Reporting Person was awarded a target number of performance-based restricted stock units (\"PRSUs\"), subject to satisfaction of performance conditions as determined by the Board of Directors of OPAL Fuels Inc. Each PRSU represented the right to receive, at settlement, one share of Class A common stock. The amount shown represents the actual number of units earned by the Reporting Person pursuant to the satisfaction of performance conditions."}],"balance_after":0,"derivative":{"underlying":"Class A common stock","underlying_shares":10847},"source":{"system":"sec-edgar","filing":"0001628280-26-023260","document":"wk-form4_1775162545.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":12,"url":"https://www.sec.gov/Archives/edgar/data/1842279/000162828026023260/wk-form4_1775162545.xml","form_type":"4"}},{"id":818625,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54152,"kind":"person","name":"Coghlin John","position":1,"cik":"0001930669","reported_name":"Coghlin John","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel"}}],"security":"Restricted Stock Units","published_at":"2026-04-02T20:42:28.000Z","date":"2026-03-31","kind":"exercise","planned":false,"acquired":false,"shares":65258,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A common stock on their scheduled vesting date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"On March 31, 2025, the Reporting Person was granted 195,772 restricted stock units (\"RSUs\") pursuant to the terms of the Issuer's 2022 Omnibus Equity Incentive Plan (the \"Plan\"). RSUs were scheduled to vest in three (3) equal installments on each of the following dates: (i) March 31, 2026, (ii) March 31, 2027, and (iii) March 31, 2028, provided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"On March 31, 2025, the Reporting Person was granted 195,772 restricted stock units (\"RSUs\") pursuant to the terms of the Issuer's 2022 Omnibus Equity Incentive Plan (the \"Plan\"). RSUs were scheduled to vest in three (3) equal installments on each of the following dates: (i) March 31, 2026, (ii) March 31, 2027, and (iii) March 31, 2028, provided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock."}],"balance_after":130514,"derivative":{"underlying":"Class A common stock","underlying_shares":65258},"source":{"system":"sec-edgar","filing":"0001628280-26-023260","document":"wk-form4_1775162545.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":11,"url":"https://www.sec.gov/Archives/edgar/data/1842279/000162828026023260/wk-form4_1775162545.xml","form_type":"4"}},{"id":818624,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54152,"kind":"person","name":"Coghlin John","position":1,"cik":"0001930669","reported_name":"Coghlin John","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel"}}],"security":"Restricted Stock Units","published_at":"2026-04-02T20:42:28.000Z","date":"2026-03-31","kind":"exercise","planned":false,"acquired":false,"shares":23522,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A common stock on their scheduled vesting date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"On March 31, 2024, the Reporting Person was granted 70,565 restricted stock units (\"RSUs\") pursuant to the terms of the Issuer's 2022 Omnibus Equity Incentive Plan (the \"Plan\"). RSUs were scheduled to vest in three (3) equal installments on each of the following dates: (i) March 31, 2025, (ii) March 31, 2026, and (iii) March 31, 2027, provided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"On March 31, 2024, the Reporting Person was granted 70,565 restricted stock units (\"RSUs\") pursuant to the terms of the Issuer's 2022 Omnibus Equity Incentive Plan (the \"Plan\"). RSUs were scheduled to vest in three (3) equal installments on each of the following dates: (i) March 31, 2025, (ii) March 31, 2026, and (iii) March 31, 2027, provided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock."}],"balance_after":23522,"derivative":{"underlying":"Class A common stock","underlying_shares":23522},"source":{"system":"sec-edgar","filing":"0001628280-26-023260","document":"wk-form4_1775162545.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/1842279/000162828026023260/wk-form4_1775162545.xml","form_type":"4"}},{"id":818623,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54152,"kind":"person","name":"Coghlin John","position":1,"cik":"0001930669","reported_name":"Coghlin John","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel"}}],"security":"Restricted Stock Units","published_at":"2026-04-02T20:42:28.000Z","date":"2026-03-31","kind":"exercise","planned":false,"acquired":false,"shares":16738,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A common stock on their scheduled vesting date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"On March 31, 2023, the Reporting Person was granted 50,216 restricted stock units (\"RSUs\") pursuant to the terms of the Issuer's 2022 Omnibus Equity Incentive Plan (the \"Plan\"). RSUs were scheduled to vest in three (3) equal installments on each of the following dates: (i) March 31, 2024, (ii) March 31, 2025, and (iii) March 31, 2026, provided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"On March 31, 2023, the Reporting Person was granted 50,216 restricted stock units (\"RSUs\") pursuant to the terms of the Issuer's 2022 Omnibus Equity Incentive Plan (the \"Plan\"). RSUs were scheduled to vest in three (3) equal installments on each of the following dates: (i) March 31, 2024, (ii) March 31, 2025, and (iii) March 31, 2026, provided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock."}],"balance_after":0,"derivative":{"underlying":"Class A common stock","underlying_shares":16738},"source":{"system":"sec-edgar","filing":"0001628280-26-023260","document":"wk-form4_1775162545.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1842279/000162828026023260/wk-form4_1775162545.xml","form_type":"4"}},{"id":818622,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54152,"kind":"person","name":"Coghlin John","position":1,"cik":"0001930669","reported_name":"Coghlin John","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel"}}],"security":"Class A common stock","published_at":"2026-04-02T20:42:28.000Z","date":"2026-03-31","kind":"tax_withholding","planned":false,"acquired":false,"shares":3910,"price":2.52,"value":9853.2,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"Represents the shares held by the Company to satisfy tax withholding requirements on vesting of restricted stock units. The total value of securities withheld was based on a price of $2.52 per share, the closing price of Class A common stock on March 31, 2026."}],"balance_after":146897,"source":{"system":"sec-edgar","filing":"0001628280-26-023260","document":"wk-form4_1775162545.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1842279/000162828026023260/wk-form4_1775162545.xml","form_type":"4"}},{"id":818621,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54152,"kind":"person","name":"Coghlin John","position":1,"cik":"0001930669","reported_name":"Coghlin John","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel"}}],"security":"Class A common stock","published_at":"2026-04-02T20:42:28.000Z","date":"2026-03-31","kind":"exercise","planned":false,"acquired":true,"shares":10847,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A common stock on their scheduled vesting date."}],"balance_after":150807,"source":{"system":"sec-edgar","filing":"0001628280-26-023260","document":"wk-form4_1775162545.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1842279/000162828026023260/wk-form4_1775162545.xml","form_type":"4"}},{"id":818620,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54152,"kind":"person","name":"Coghlin John","position":1,"cik":"0001930669","reported_name":"Coghlin John","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel"}}],"security":"Class A common stock","published_at":"2026-04-02T20:42:28.000Z","date":"2026-03-31","kind":"tax_withholding","planned":false,"acquired":false,"shares":23525,"price":2.52,"value":59283.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"Represents the shares held by the Company to satisfy tax withholding requirements on vesting of restricted stock units. The total value of securities withheld was based on a price of $2.52 per share, the closing price of Class A common stock on March 31, 2026."}],"balance_after":139960,"source":{"system":"sec-edgar","filing":"0001628280-26-023260","document":"wk-form4_1775162545.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1842279/000162828026023260/wk-form4_1775162545.xml","form_type":"4"}},{"id":818619,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54152,"kind":"person","name":"Coghlin John","position":1,"cik":"0001930669","reported_name":"Coghlin John","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel"}}],"security":"Class A common stock","published_at":"2026-04-02T20:42:28.000Z","date":"2026-03-31","kind":"exercise","planned":false,"acquired":true,"shares":65258,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A common stock on their scheduled vesting date."}],"balance_after":163485,"source":{"system":"sec-edgar","filing":"0001628280-26-023260","document":"wk-form4_1775162545.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1842279/000162828026023260/wk-form4_1775162545.xml","form_type":"4"}},{"id":818618,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54152,"kind":"person","name":"Coghlin John","position":1,"cik":"0001930669","reported_name":"Coghlin John","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel"}}],"security":"Class A common stock","published_at":"2026-04-02T20:42:28.000Z","date":"2026-03-31","kind":"tax_withholding","planned":false,"acquired":false,"shares":8479,"price":2.52,"value":21367.08,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"Represents the shares held by the Company to satisfy tax withholding requirements on vesting of restricted stock units. The total value of securities withheld was based on a price of $2.52 per share, the closing price of Class A common stock on March 31, 2026."}],"balance_after":98227,"source":{"system":"sec-edgar","filing":"0001628280-26-023260","document":"wk-form4_1775162545.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1842279/000162828026023260/wk-form4_1775162545.xml","form_type":"4"}},{"id":818617,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54152,"kind":"person","name":"Coghlin John","position":1,"cik":"0001930669","reported_name":"Coghlin John","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel"}}],"security":"Class A common stock","published_at":"2026-04-02T20:42:28.000Z","date":"2026-03-31","kind":"exercise","planned":false,"acquired":true,"shares":23522,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A common stock on their scheduled vesting date."}],"balance_after":106706,"source":{"system":"sec-edgar","filing":"0001628280-26-023260","document":"wk-form4_1775162545.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1842279/000162828026023260/wk-form4_1775162545.xml","form_type":"4"}},{"id":818616,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54152,"kind":"person","name":"Coghlin John","position":1,"cik":"0001930669","reported_name":"Coghlin John","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel"}}],"security":"Class A common stock","published_at":"2026-04-02T20:42:28.000Z","date":"2026-03-31","kind":"tax_withholding","planned":false,"acquired":false,"shares":6034,"price":2.52,"value":15205.68,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"Represents the shares held by the Company to satisfy tax withholding requirements on vesting of restricted stock units. The total value of securities withheld was based on a price of $2.52 per share, the closing price of Class A common stock on March 31, 2026."}],"balance_after":83184,"source":{"system":"sec-edgar","filing":"0001628280-26-023260","document":"wk-form4_1775162545.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1842279/000162828026023260/wk-form4_1775162545.xml","form_type":"4"}},{"id":818615,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54152,"kind":"person","name":"Coghlin John","position":1,"cik":"0001930669","reported_name":"Coghlin John","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"General Counsel"}}],"security":"Class A common stock","published_at":"2026-04-02T20:42:28.000Z","date":"2026-03-31","kind":"exercise","planned":false,"acquired":true,"shares":16738,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A common stock on their scheduled vesting date."}],"balance_after":89218,"source":{"system":"sec-edgar","filing":"0001628280-26-023260","document":"wk-form4_1775162545.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1842279/000162828026023260/wk-form4_1775162545.xml","form_type":"4"}},{"id":818614,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54151,"kind":"person","name":"Unger David C","position":1,"cik":"0001932698","reported_name":"Unger David C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Stock options (right to buy)","published_at":"2026-04-02T20:41:28.000Z","date":"2026-03-31","kind":"grant","planned":false,"acquired":true,"shares":56660,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F8","text":"Granted pursuant to the Issuer's 2022 Omnibus Equity Incentive Plan (the \"Plan\")."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F9","text":"The Reporting Person was granted an option to purchase shares of the Issuer's Class A common stock (the \"Option\") at an exercise price of $2.52 per share, which was the volume weighted average price of the Issuer's Class A common stock for the five days immediately preceding March 31, 2026, as quoted on the Nasdaq Stock Market. The Option vests in three (3) equal installments on each of the following dates: (i) March 31, 2027, (ii) March 31, 2028, and (iii) March 31, 2029, provided, that the Reporting Person continues to provide services to the Issuer through the applicable vesting date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F10","text":"In the event that the Reporting Person's employment is terminated by reason of the Reporting Person's disability or termination without cause, the Options shall vest with respect to the number of shares of Class A common stock that would have vested upon the next vesting date following such termination, had the Reporting Person remained an employee."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F11","text":"Notwithstanding the foregoing, upon the occurrence of a termination of employment by reason of the Reporting Person's (i) termination without cause; or (ii) resignation for good reason, in connection with or within the 24 months following the consummation of a Change in Control (as defined in the Plan and the relevant award agreement), any unvested portion of the Option shall accelerate and vest in full."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F12","text":"Upon the occurrence of a termination by reason of the Reporting Person's death, any unvested portion of the Option shall accelerate and vest in full."}],"balance_after":56660,"derivative":{"exercise_price":2.52,"expiration_date":"2036-03-31","underlying":"Class A common stock","underlying_shares":56660},"source":{"system":"sec-edgar","filing":"0001628280-26-023257","document":"wk-form4_1775162484.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":14,"url":"https://www.sec.gov/Archives/edgar/data/1842279/000162828026023257/wk-form4_1775162484.xml","form_type":"4"}},{"id":818613,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54151,"kind":"person","name":"Unger David C","position":1,"cik":"0001932698","reported_name":"Unger David C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Restricted Stock Units","published_at":"2026-04-02T20:41:28.000Z","date":"2026-03-31","kind":"grant","planned":false,"acquired":true,"shares":101433,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F7","text":"On March 31, 2026, the Reporting Person was granted 101,433 RSUs pursuant to the Plan. RSUs are scheduled to vest in three (3) equal installments on each of the following dates: (i) March 31, 2027, (ii) March 31, 2028, and (iii) March 31, 2029, provided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F7","text":"On March 31, 2026, the Reporting Person was granted 101,433 RSUs pursuant to the Plan. RSUs are scheduled to vest in three (3) equal installments on each of the following dates: (i) March 31, 2027, (ii) March 31, 2028, and (iii) March 31, 2029, provided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F7","text":"On March 31, 2026, the Reporting Person was granted 101,433 RSUs pursuant to the Plan. RSUs are scheduled to vest in three (3) equal installments on each of the following dates: (i) March 31, 2027, (ii) March 31, 2028, and (iii) March 31, 2029, provided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock."}],"balance_after":101433,"derivative":{"underlying":"Class A common stock","underlying_shares":101433},"source":{"system":"sec-edgar","filing":"0001628280-26-023257","document":"wk-form4_1775162484.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":13,"url":"https://www.sec.gov/Archives/edgar/data/1842279/000162828026023257/wk-form4_1775162484.xml","form_type":"4"}},{"id":818612,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54151,"kind":"person","name":"Unger David C","position":1,"cik":"0001932698","reported_name":"Unger David C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Restricted Stock Units","published_at":"2026-04-02T20:41:28.000Z","date":"2026-03-31","kind":"exercise","planned":false,"acquired":false,"shares":5811,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A common stock on their scheduled vesting date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"On March 31, 2023 the Reporting Person was awarded a target number of performance-based restricted stock units (\"PRSUs\"), subject to satisfaction of performance conditions as determined by the Board of Directors of OPAL Fuels Inc. Each PRSU represented the right to receive, at settlement, one share of Class A common stock. The amount shown represents the actual number of units earned by the Reporting Person pursuant to the satisfaction of performance conditions."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F6","text":"On March 31, 2023 the Reporting Person was awarded a target number of performance-based restricted stock units (\"PRSUs\"), subject to satisfaction of performance conditions as determined by the Board of Directors of OPAL Fuels Inc. Each PRSU represented the right to receive, at settlement, one share of Class A common stock. The amount shown represents the actual number of units earned by the Reporting Person pursuant to the satisfaction of performance conditions."}],"balance_after":0,"derivative":{"underlying":"Class A common stock","underlying_shares":5811},"source":{"system":"sec-edgar","filing":"0001628280-26-023257","document":"wk-form4_1775162484.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":12,"url":"https://www.sec.gov/Archives/edgar/data/1842279/000162828026023257/wk-form4_1775162484.xml","form_type":"4"}},{"id":818611,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54151,"kind":"person","name":"Unger David C","position":1,"cik":"0001932698","reported_name":"Unger David C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Restricted Stock Units","published_at":"2026-04-02T20:41:28.000Z","date":"2026-03-31","kind":"exercise","planned":false,"acquired":false,"shares":57100,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A common stock on their scheduled vesting date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"On March 31, 2025, the Reporting Person was granted 171,300 restricted stock units (\"RSUs\") pursuant to the terms of the Issuer's 2022 Omnibus Equity Incentive Plan (the \"Plan\"). RSUs were scheduled to vest in three (3) equal installments on each of the following dates: (i) March 31, 2026, (ii) March 31, 2027, and (iii) March 31, 2028, provided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"On March 31, 2025, the Reporting Person was granted 171,300 restricted stock units (\"RSUs\") pursuant to the terms of the Issuer's 2022 Omnibus Equity Incentive Plan (the \"Plan\"). RSUs were scheduled to vest in three (3) equal installments on each of the following dates: (i) March 31, 2026, (ii) March 31, 2027, and (iii) March 31, 2028, provided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock."}],"balance_after":114200,"derivative":{"underlying":"Class A common stock","underlying_shares":57100},"source":{"system":"sec-edgar","filing":"0001628280-26-023257","document":"wk-form4_1775162484.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":11,"url":"https://www.sec.gov/Archives/edgar/data/1842279/000162828026023257/wk-form4_1775162484.xml","form_type":"4"}},{"id":818610,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54151,"kind":"person","name":"Unger David C","position":1,"cik":"0001932698","reported_name":"Unger David C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Restricted Stock Units","published_at":"2026-04-02T20:41:28.000Z","date":"2026-03-31","kind":"exercise","planned":false,"acquired":false,"shares":23522,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A common stock on their scheduled vesting date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"On March 31, 2024, the Reporting Person was granted 70,565 restricted stock units (\"RSUs\") pursuant to the terms of the Issuer's 2022 Omnibus Equity Incentive Plan (the \"Plan\"). RSUs were scheduled to vest in three (3) equal installments on each of the following dates:  (i) March 31, 2025, (ii) March 31, 2026, and (iii) March 31, 2027, provided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"On March 31, 2024, the Reporting Person was granted 70,565 restricted stock units (\"RSUs\") pursuant to the terms of the Issuer's 2022 Omnibus Equity Incentive Plan (the \"Plan\"). RSUs were scheduled to vest in three (3) equal installments on each of the following dates:  (i) March 31, 2025, (ii) March 31, 2026, and (iii) March 31, 2027, provided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock."}],"balance_after":23522,"derivative":{"underlying":"Class A common stock","underlying_shares":23522},"source":{"system":"sec-edgar","filing":"0001628280-26-023257","document":"wk-form4_1775162484.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/1842279/000162828026023257/wk-form4_1775162484.xml","form_type":"4"}},{"id":818609,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54151,"kind":"person","name":"Unger David C","position":1,"cik":"0001932698","reported_name":"Unger David C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Restricted Stock Units","published_at":"2026-04-02T20:41:28.000Z","date":"2026-03-31","kind":"exercise","planned":false,"acquired":false,"shares":80703,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A common stock on their scheduled vesting date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"On March 31, 2023, the Reporting Person was granted 242,111 restricted stock units (\"RSUs\") pursuant to the terms of the Issuer's 2022 Omnibus Equity Incentive Plan (the \"Plan\"). RSUs were scheduled to vest in three (3) equal installments on each of the following dates:  (i) March 31, 2024, (ii) March 31, 2025, and (iii) March 31, 2026, provided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"On March 31, 2023, the Reporting Person was granted 242,111 restricted stock units (\"RSUs\") pursuant to the terms of the Issuer's 2022 Omnibus Equity Incentive Plan (the \"Plan\"). RSUs were scheduled to vest in three (3) equal installments on each of the following dates:  (i) March 31, 2024, (ii) March 31, 2025, and (iii) March 31, 2026, provided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock."}],"balance_after":0,"derivative":{"underlying":"Class A common stock","underlying_shares":80703},"source":{"system":"sec-edgar","filing":"0001628280-26-023257","document":"wk-form4_1775162484.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1842279/000162828026023257/wk-form4_1775162484.xml","form_type":"4"}},{"id":818608,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54151,"kind":"person","name":"Unger David C","position":1,"cik":"0001932698","reported_name":"Unger David C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Class A common stock","published_at":"2026-04-02T20:41:28.000Z","date":"2026-03-31","kind":"tax_withholding","planned":false,"acquired":false,"shares":2095,"price":2.52,"value":5279.4,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"Represents the shares held by the Company to satisfy tax withholding requirements on vesting of restricted stock units. The total value of securities withheld was based on a price of $2.52 per share, the closing price of Class A common stock on March 31, 2026."}],"balance_after":230861,"source":{"system":"sec-edgar","filing":"0001628280-26-023257","document":"wk-form4_1775162484.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1842279/000162828026023257/wk-form4_1775162484.xml","form_type":"4"}},{"id":818607,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54151,"kind":"person","name":"Unger David C","position":1,"cik":"0001932698","reported_name":"Unger David C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Class A common stock","published_at":"2026-04-02T20:41:28.000Z","date":"2026-03-31","kind":"exercise","planned":false,"acquired":true,"shares":5811,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A common stock on their scheduled vesting date."}],"balance_after":232956,"source":{"system":"sec-edgar","filing":"0001628280-26-023257","document":"wk-form4_1775162484.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1842279/000162828026023257/wk-form4_1775162484.xml","form_type":"4"}},{"id":818606,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54151,"kind":"person","name":"Unger David C","position":1,"cik":"0001932698","reported_name":"Unger David C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Class A common stock","published_at":"2026-04-02T20:41:28.000Z","date":"2026-03-31","kind":"tax_withholding","planned":false,"acquired":false,"shares":20584,"price":2.52,"value":51871.68,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"Represents the shares held by the Company to satisfy tax withholding requirements on vesting of restricted stock units. The total value of securities withheld was based on a price of $2.52 per share, the closing price of Class A common stock on March 31, 2026."}],"balance_after":227145,"source":{"system":"sec-edgar","filing":"0001628280-26-023257","document":"wk-form4_1775162484.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1842279/000162828026023257/wk-form4_1775162484.xml","form_type":"4"}},{"id":818605,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54151,"kind":"person","name":"Unger David C","position":1,"cik":"0001932698","reported_name":"Unger David C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Class A common stock","published_at":"2026-04-02T20:41:28.000Z","date":"2026-03-31","kind":"exercise","planned":false,"acquired":true,"shares":57100,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A common stock on their scheduled vesting date."}],"balance_after":247729,"source":{"system":"sec-edgar","filing":"0001628280-26-023257","document":"wk-form4_1775162484.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1842279/000162828026023257/wk-form4_1775162484.xml","form_type":"4"}},{"id":818604,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54151,"kind":"person","name":"Unger David C","position":1,"cik":"0001932698","reported_name":"Unger David C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Class A common stock","published_at":"2026-04-02T20:41:28.000Z","date":"2026-03-31","kind":"tax_withholding","planned":false,"acquired":false,"shares":8479,"price":2.52,"value":21367.08,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"Represents the shares held by the Company to satisfy tax withholding requirements on vesting of restricted stock units. The total value of securities withheld was based on a price of $2.52 per share, the closing price of Class A common stock on March 31, 2026."}],"balance_after":190629,"source":{"system":"sec-edgar","filing":"0001628280-26-023257","document":"wk-form4_1775162484.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1842279/000162828026023257/wk-form4_1775162484.xml","form_type":"4"}},{"id":818603,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54151,"kind":"person","name":"Unger David C","position":1,"cik":"0001932698","reported_name":"Unger David C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Class A common stock","published_at":"2026-04-02T20:41:28.000Z","date":"2026-03-31","kind":"exercise","planned":false,"acquired":true,"shares":23522,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A common stock on their scheduled vesting date."}],"balance_after":199108,"source":{"system":"sec-edgar","filing":"0001628280-26-023257","document":"wk-form4_1775162484.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1842279/000162828026023257/wk-form4_1775162484.xml","form_type":"4"}},{"id":818602,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54151,"kind":"person","name":"Unger David C","position":1,"cik":"0001932698","reported_name":"Unger David C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Class A common stock","published_at":"2026-04-02T20:41:28.000Z","date":"2026-03-31","kind":"tax_withholding","planned":false,"acquired":false,"shares":29093,"price":2.52,"value":73314.36,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"Represents the shares held by the Company to satisfy tax withholding requirements on vesting of restricted stock units. The total value of securities withheld was based on a price of $2.52 per share, the closing price of Class A common stock on March 31, 2026."}],"balance_after":175586,"source":{"system":"sec-edgar","filing":"0001628280-26-023257","document":"wk-form4_1775162484.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1842279/000162828026023257/wk-form4_1775162484.xml","form_type":"4"}},{"id":818601,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54151,"kind":"person","name":"Unger David C","position":1,"cik":"0001932698","reported_name":"Unger David C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Class A common stock","published_at":"2026-04-02T20:41:28.000Z","date":"2026-03-31","kind":"exercise","planned":false,"acquired":true,"shares":80703,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A common stock on their scheduled vesting date."}],"balance_after":204679,"source":{"system":"sec-edgar","filing":"0001628280-26-023257","document":"wk-form4_1775162484.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1842279/000162828026023257/wk-form4_1775162484.xml","form_type":"4"}},{"id":818600,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":520,"kind":"person","name":"Comora Adam","position":1,"cik":"0001933088","reported_name":"Comora Adam","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Co-Chief Executive Officer"}}],"security":"Stock options (right to buy)","published_at":"2026-04-02T20:36:00.000Z","date":"2026-03-31","kind":"grant","planned":false,"acquired":true,"shares":226640,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F8","text":"Granted pursuant to the Issuer's 2022 Omnibus Equity Incentive Plan (the \"Plan\")."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F9","text":"The Reporting Person was granted an option to purchase shares of the Issuer's Class A common stock (the \"Option\") at an exercise price of $2.52 per share, which was the volume weighted average price of the Issuer's Class A common stock for the five days immediately preceding March 31, 2026, as quoted on the Nasdaq Stock Market. The Option vests in three (3) equal installments on each of the following dates: (i) March 31, 2027, (ii) March 31, 2028, and (iii) March 31, 2029, provided, that the Reporting Person continues to provide services to the Issuer through the applicable vesting date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F10","text":"In the event that the Reporting Person's employment is terminated by reason of the Reporting Person's disability or termination without cause, the Options shall vest with respect to the number of shares of Class A common stock that would have vested upon the next vesting date following such termination, had the Reporting Person remained an employee."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F11","text":"Notwithstanding the foregoing, upon the occurrence of a termination of employment by reason of the Reporting Person's (i) termination without cause; or (ii) resignation for good reason, in connection with or within the 24 months following the consummation of a Change in Control (as defined in the Plan and the relevant award agreement), any unvested portion of the Option shall accelerate and vest in full."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F12","text":"Upon the occurrence of a termination by reason of the Reporting Person's death, any unvested portion of the Option shall accelerate and vest in full."}],"balance_after":226640,"derivative":{"exercise_price":2.52,"expiration_date":"2036-03-31","underlying":"Class A common stock","underlying_shares":226640},"source":{"system":"sec-edgar","filing":"0001628280-26-023231","document":"wk-form4_1775162146.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":14,"url":"https://www.sec.gov/Archives/edgar/data/1842279/000162828026023231/wk-form4_1775162146.xml","form_type":"4"}},{"id":818599,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":520,"kind":"person","name":"Comora Adam","position":1,"cik":"0001933088","reported_name":"Comora Adam","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Co-Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2026-04-02T20:36:00.000Z","date":"2026-03-31","kind":"grant","planned":false,"acquired":true,"shares":405729,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F7","text":"On March 31, 2026, the Reporting Person was granted 405,729 RSUs pursuant to the Plan. RSUs are scheduled to vest in three (3) equal installments on each of the following dates: (i) March 31, 2027, (ii) March 31, 2028, and (iii) March 31, 2029, provided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock."},{"field":"kind","element":"transactionCoding","label":"F8","text":"Granted pursuant to the Issuer's 2022 Omnibus Equity Incentive Plan (the \"Plan\")."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F7","text":"On March 31, 2026, the Reporting Person was granted 405,729 RSUs pursuant to the Plan. RSUs are scheduled to vest in three (3) equal installments on each of the following dates: (i) March 31, 2027, (ii) March 31, 2028, and (iii) March 31, 2029, provided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F7","text":"On March 31, 2026, the Reporting Person was granted 405,729 RSUs pursuant to the Plan. RSUs are scheduled to vest in three (3) equal installments on each of the following dates: (i) March 31, 2027, (ii) March 31, 2028, and (iii) March 31, 2029, provided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock."}],"balance_after":405729,"derivative":{"underlying":"Class A common stock","underlying_shares":405729},"source":{"system":"sec-edgar","filing":"0001628280-26-023231","document":"wk-form4_1775162146.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":13,"url":"https://www.sec.gov/Archives/edgar/data/1842279/000162828026023231/wk-form4_1775162146.xml","form_type":"4"}},{"id":818598,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":520,"kind":"person","name":"Comora Adam","position":1,"cik":"0001933088","reported_name":"Comora Adam","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Co-Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2026-04-02T20:36:00.000Z","date":"2026-03-31","kind":"exercise","planned":false,"acquired":false,"shares":23243,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A common stock on their scheduled vesting date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"On March 31, 2023 the Reporting Person was awarded a target number of performance-based restricted stock units (\"PRSUs\"), subject to satisfaction of performance conditions as determined by the Board of Directors of OPAL Fuels Inc. Each PRSU represented the right to receive, at settlement, one share of Class A common stock. The amount shown represents the actual number of units earned by the Reporting Person pursuant to the satisfaction of performance conditions."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F6","text":"On March 31, 2023 the Reporting Person was awarded a target number of performance-based restricted stock units (\"PRSUs\"), subject to satisfaction of performance conditions as determined by the Board of Directors of OPAL Fuels Inc. Each PRSU represented the right to receive, at settlement, one share of Class A common stock. The amount shown represents the actual number of units earned by the Reporting Person pursuant to the satisfaction of performance conditions."}],"balance_after":0,"derivative":{"underlying":"Class A common stock","underlying_shares":23243},"source":{"system":"sec-edgar","filing":"0001628280-26-023231","document":"wk-form4_1775162146.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":12,"url":"https://www.sec.gov/Archives/edgar/data/1842279/000162828026023231/wk-form4_1775162146.xml","form_type":"4"}},{"id":818597,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":520,"kind":"person","name":"Comora Adam","position":1,"cik":"0001933088","reported_name":"Comora Adam","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Co-Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2026-04-02T20:36:00.000Z","date":"2026-03-31","kind":"exercise","planned":false,"acquired":false,"shares":163143,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A common stock on their scheduled vesting date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"On March 31, 2025, the Reporting Person was granted 489,429 restricted stock units (\"RSUs\") pursuant to the terms of the Issuer's 2022 Omnibus Equity Incentive Plan (the \"Plan\"). RSUs were scheduled to vest in three (3) equal installments on each of the following dates:  (i) March 31, 2026, (ii) March 31, 2027, and (iii) March 31, 2028, provided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"On March 31, 2025, the Reporting Person was granted 489,429 restricted stock units (\"RSUs\") pursuant to the terms of the Issuer's 2022 Omnibus Equity Incentive Plan (the \"Plan\"). RSUs were scheduled to vest in three (3) equal installments on each of the following dates:  (i) March 31, 2026, (ii) March 31, 2027, and (iii) March 31, 2028, provided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock."}],"balance_after":326286,"derivative":{"underlying":"Class A common stock","underlying_shares":163143},"source":{"system":"sec-edgar","filing":"0001628280-26-023231","document":"wk-form4_1775162146.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":11,"url":"https://www.sec.gov/Archives/edgar/data/1842279/000162828026023231/wk-form4_1775162146.xml","form_type":"4"}},{"id":818596,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":520,"kind":"person","name":"Comora Adam","position":1,"cik":"0001933088","reported_name":"Comora Adam","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Co-Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2026-04-02T20:36:00.000Z","date":"2026-03-31","kind":"exercise","planned":false,"acquired":false,"shares":67204,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A common stock on their scheduled vesting date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"On March 31, 2024, the Reporting Person was granted 201,613 restricted stock units (\"RSUs\") pursuant to the terms of the Issuer's 2022 Omnibus Equity Incentive Plan (the \"Plan\"). RSUs were scheduled to vest in three (3) equal installments on each of the following dates:  (i) March 31, 2025, (ii) March 31, 2026, and (iii) March 31, 2027, provided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"On March 31, 2024, the Reporting Person was granted 201,613 restricted stock units (\"RSUs\") pursuant to the terms of the Issuer's 2022 Omnibus Equity Incentive Plan (the \"Plan\"). RSUs were scheduled to vest in three (3) equal installments on each of the following dates:  (i) March 31, 2025, (ii) March 31, 2026, and (iii) March 31, 2027, provided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. 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Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"On March 31, 2023, the Reporting Person was granted 107,605 restricted stock units (\"RSUs\") pursuant to the terms of the Issuer's 2022 Omnibus Equity Incentive Plan (the \"Plan\"). RSUs were scheduled to vest in three (3) equal installments on each of the following dates:  (i) March 31, 2024, (ii) March 31, 2025, and (iii) March 31, 2026, provided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. 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The RSUs are scheduled to vest on March 31, 2027,\nprovided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of\nClass A common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"On March 31, 2026, the Reporting Person was granted 54,773 RSUs pursuant to the terms of the Issuer's 2022 Omnibus Equity Incentive Plan. The RSUs are scheduled to vest on March 31, 2027,\nprovided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of\nClass A common stock."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"On March 31, 2026, the Reporting Person was granted 54,773 RSUs pursuant to the terms of the Issuer's 2022 Omnibus Equity Incentive Plan. The RSUs are scheduled to vest on March 31, 2027,\nprovided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. 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The RSUs are scheduled to vest on March 31, 2027,\nprovided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of\nClass A common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"On March 31, 2026, the Reporting Person was granted 54,773 RSUs pursuant to the terms of the Issuer's 2022 Omnibus Equity Incentive Plan. The RSUs are scheduled to vest on March 31, 2027,\nprovided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of\nClass A common stock."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"On March 31, 2026, the Reporting Person was granted 54,773 RSUs pursuant to the terms of the Issuer's 2022 Omnibus Equity Incentive Plan. The RSUs are scheduled to vest on March 31, 2027,\nprovided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. 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The RSUs are scheduled to vest on March 31, 2027,\nprovided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of\nClass A common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"On March 31, 2026, the Reporting Person was granted 54,773 RSUs pursuant to the terms of the Issuer's 2022 Omnibus Equity Incentive Plan. The RSUs are scheduled to vest on March 31, 2027,\nprovided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of\nClass A common stock."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"On March 31, 2026, the Reporting Person was granted 54,773 RSUs pursuant to the terms of the Issuer's 2022 Omnibus Equity Incentive Plan. The RSUs are scheduled to vest on March 31, 2027,\nprovided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. 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Each restricted stock unit represents the right to receive, at settlement, one share of\nClass A common stock."}],"balance_after":54773,"derivative":{"underlying":"Class A common stock","underlying_shares":54773},"source":{"system":"sec-edgar","filing":"0001628280-26-023224","document":"wk-form4_1775161878.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1827382/000162828026023224/wk-form4_1775161878.xml","form_type":"4"}},{"id":818649,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":502,"kind":"person","name":"Nisar Nadeem","position":1,"cik":"0001827382","reported_name":"Nisar Nadeem","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2026-04-02T20:31:21.000Z","date":"2026-03-31","kind":"exercise","planned":false,"acquired":false,"shares":66073,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A\ncommon stock on their scheduled vesting date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A\ncommon stock on their scheduled vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A\ncommon stock on their scheduled vesting date."}],"balance_after":0,"derivative":{"underlying":"Class A common stock","underlying_shares":66073},"source":{"system":"sec-edgar","filing":"0001628280-26-023224","document":"wk-form4_1775161878.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1827382/000162828026023224/wk-form4_1775161878.xml","form_type":"4"}},{"id":818648,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":502,"kind":"person","name":"Nisar Nadeem","position":1,"cik":"0001827382","reported_name":"Nisar Nadeem","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A common stock","published_at":"2026-04-02T20:31:21.000Z","date":"2026-03-31","kind":"exercise","planned":false,"acquired":true,"shares":66073,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A\ncommon stock on their scheduled vesting date."}],"balance_after":207785,"source":{"system":"sec-edgar","filing":"0001628280-26-023224","document":"wk-form4_1775161878.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1827382/000162828026023224/wk-form4_1775161878.xml","form_type":"4"}},{"id":818934,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":30249,"kind":"person","name":"Vemuri Ashok","position":1,"cik":"0001586651","reported_name":"Vemuri Ashok","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2026-04-02T20:29:58.000Z","date":"2026-03-31","kind":"grant","planned":false,"acquired":true,"shares":54773,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"On March 31, 2026, the Reporting Person was granted 54,773 RSUs pursuant to the terms of the Issuer's 2022 Omnibus Equity Incentive Plan. The RSUs are scheduled to vest on March 31, 2027, provided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"On March 31, 2026, the Reporting Person was granted 54,773 RSUs pursuant to the terms of the Issuer's 2022 Omnibus Equity Incentive Plan. The RSUs are scheduled to vest on March 31, 2027, provided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"On March 31, 2026, the Reporting Person was granted 54,773 RSUs pursuant to the terms of the Issuer's 2022 Omnibus Equity Incentive Plan. The RSUs are scheduled to vest on March 31, 2027, provided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock."}],"balance_after":54773,"derivative":{"underlying":"Class A common stock","underlying_shares":54773},"source":{"system":"sec-edgar","filing":"0001628280-26-023221","document":"wk-form4_1775161795.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1586651/000162828026023221/wk-form4_1775161795.xml","form_type":"4"}},{"id":818933,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":30249,"kind":"person","name":"Vemuri Ashok","position":1,"cik":"0001586651","reported_name":"Vemuri Ashok","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2026-04-02T20:29:58.000Z","date":"2026-03-31","kind":"exercise","planned":false,"acquired":false,"shares":66073,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A common stock on their scheduled vesting date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A common stock on their scheduled vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A common stock on their scheduled vesting date."}],"balance_after":0,"derivative":{"underlying":"Class A common stock","underlying_shares":66073},"source":{"system":"sec-edgar","filing":"0001628280-26-023221","document":"wk-form4_1775161795.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1586651/000162828026023221/wk-form4_1775161795.xml","form_type":"4"}},{"id":818932,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":30249,"kind":"person","name":"Vemuri Ashok","position":1,"cik":"0001586651","reported_name":"Vemuri Ashok","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A common stock","published_at":"2026-04-02T20:29:58.000Z","date":"2026-03-31","kind":"exercise","planned":false,"acquired":true,"shares":66073,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A common stock on their scheduled vesting date."}],"balance_after":122785,"source":{"system":"sec-edgar","filing":"0001628280-26-023221","document":"wk-form4_1775161795.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1586651/000162828026023221/wk-form4_1775161795.xml","form_type":"4"}},{"id":818667,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54158,"kind":"person","name":"Comora Mark S","position":1,"cik":"0001827111","reported_name":"Comora Mark S","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Restricted Stock Units","published_at":"2026-04-02T16:50:13.000Z","date":"2026-03-31","kind":"grant","planned":false,"acquired":true,"shares":54773,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"On March 31, 2026, the Reporting Person was granted 54,773 RSUs pursuant to the terms of the Issuer's 2022 Omnibus Equity Incentive Plan. The RSUs are scheduled to vest on March 31, 2027,\nprovided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of\nClass A common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"On March 31, 2026, the Reporting Person was granted 54,773 RSUs pursuant to the terms of the Issuer's 2022 Omnibus Equity Incentive Plan. The RSUs are scheduled to vest on March 31, 2027,\nprovided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of\nClass A common stock."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"On March 31, 2026, the Reporting Person was granted 54,773 RSUs pursuant to the terms of the Issuer's 2022 Omnibus Equity Incentive Plan. The RSUs are scheduled to vest on March 31, 2027,\nprovided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of\nClass A common stock."}],"balance_after":54773,"derivative":{"underlying":"Class A common stock","underlying_shares":54773},"source":{"system":"sec-edgar","filing":"0001628280-26-023272","document":"wk-form4_1775163010.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1827111/000162828026023272/wk-form4_1775163010.xml","form_type":"4"}},{"id":818666,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54158,"kind":"person","name":"Comora Mark S","position":1,"cik":"0001827111","reported_name":"Comora Mark S","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Restricted Stock Units","published_at":"2026-04-02T16:50:13.000Z","date":"2026-03-31","kind":"exercise","planned":false,"acquired":false,"shares":66073,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A\ncommon stock on their scheduled vesting date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A\ncommon stock on their scheduled vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A\ncommon stock on their scheduled vesting date."}],"balance_after":0,"derivative":{"underlying":"Class A common stock","underlying_shares":66073},"source":{"system":"sec-edgar","filing":"0001628280-26-023272","document":"wk-form4_1775163010.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1827111/000162828026023272/wk-form4_1775163010.xml","form_type":"4"}},{"id":818665,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54158,"kind":"person","name":"Comora Mark S","position":1,"cik":"0001827111","reported_name":"Comora Mark S","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A common stock","published_at":"2026-04-02T16:50:13.000Z","date":"2026-03-31","kind":"exercise","planned":false,"acquired":true,"shares":66073,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A\ncommon stock on their scheduled vesting date."}],"balance_after":122785,"source":{"system":"sec-edgar","filing":"0001628280-26-023272","document":"wk-form4_1775163010.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1827111/000162828026023272/wk-form4_1775163010.xml","form_type":"4"}},{"id":818664,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54157,"kind":"person","name":"Maurer Jonathan Gilbert","position":1,"cik":"0001827035","reported_name":"Maurer Jonathan Gilbert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Co-Chief Executive Officer"}}],"security":"Stock options (right to buy)","published_at":"2026-04-02T16:49:08.000Z","date":"2026-03-31","kind":"grant","planned":false,"acquired":true,"shares":226640,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F8","text":"Granted pursuant to the Issuer's 2022 Omnibus Equity Incentive Plan (the \"Plan\")."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F9","text":"The Reporting Person was granted an option to purchase shares of the Issuer's Class A common stock (the \"Option\") at an exercise price of $2.52 per share, which was the volume weighted average price of the Issuer's Class A common stock for the five days immediately preceding March 31, 2026, as quoted on the Nasdaq Stock Market. The Option vests in three (3) equal installments on each of the following dates: (i) March 31, 2027, (ii) March 31, 2028, and (iii) March 31, 2029, provided, that the Reporting Person continues to provide services to the Issuer through the applicable vesting date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F10","text":"In the event that the Reporting Person's employment is terminated by reason of the Reporting Person's disability or termination without cause, the Options shall vest with respect to the number of shares of Class A common stock that would have vested upon the next vesting date following such termination, had the Reporting Person remained an employee."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F11","text":"Notwithstanding the foregoing, upon the occurrence of a termination of employment by reason of the Reporting Person's (i) termination without cause; or (ii) resignation for good reason, in connection with or within the 24 months following the consummation of a Change in Control (as defined in the Plan and the relevant award agreement), any unvested portion of the Option shall accelerate and vest in full."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F12","text":"Upon the occurrence of a termination by reason of the Reporting Person's death, any unvested portion of the Option shall accelerate and vest in full."}],"balance_after":226640,"derivative":{"exercise_price":2.52,"expiration_date":"2036-03-31","underlying":"Class A common stock","underlying_shares":226640},"source":{"system":"sec-edgar","filing":"0001628280-26-023265","document":"wk-form4_1775162945.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":14,"url":"https://www.sec.gov/Archives/edgar/data/1827035/000162828026023265/wk-form4_1775162945.xml","form_type":"4"}},{"id":818663,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54157,"kind":"person","name":"Maurer Jonathan Gilbert","position":1,"cik":"0001827035","reported_name":"Maurer Jonathan Gilbert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Co-Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2026-04-02T16:49:08.000Z","date":"2026-03-31","kind":"grant","planned":false,"acquired":true,"shares":405729,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F7","text":"On March 31, 2026, the Reporting Person was granted 405,729 RSUs pursuant to the Plan. RSUs are scheduled to vest in three (3) equal installments on each of the following dates: (i) March 31, 2027, (ii) March 31, 2028, and (iii) March 31, 2029, provided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F7","text":"On March 31, 2026, the Reporting Person was granted 405,729 RSUs pursuant to the Plan. RSUs are scheduled to vest in three (3) equal installments on each of the following dates: (i) March 31, 2027, (ii) March 31, 2028, and (iii) March 31, 2029, provided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F7","text":"On March 31, 2026, the Reporting Person was granted 405,729 RSUs pursuant to the Plan. RSUs are scheduled to vest in three (3) equal installments on each of the following dates: (i) March 31, 2027, (ii) March 31, 2028, and (iii) March 31, 2029, provided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock."}],"balance_after":405729,"derivative":{"underlying":"Class A common stock","underlying_shares":405729},"source":{"system":"sec-edgar","filing":"0001628280-26-023265","document":"wk-form4_1775162945.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":13,"url":"https://www.sec.gov/Archives/edgar/data/1827035/000162828026023265/wk-form4_1775162945.xml","form_type":"4"}},{"id":818662,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54157,"kind":"person","name":"Maurer Jonathan Gilbert","position":1,"cik":"0001827035","reported_name":"Maurer Jonathan Gilbert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Co-Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2026-04-02T16:49:08.000Z","date":"2026-03-31","kind":"exercise","planned":false,"acquired":false,"shares":23243,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A common stock on their scheduled vesting date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"On March 31, 2023 the Reporting Person was awarded a target number of performance-based restricted stock units (\"PRSUs\"), subject to satisfaction of performance conditions as determined by the Board of Directors of OPAL Fuels Inc. Each PRSU represented the right to receive, at settlement, one share of Class A common stock. The amount shown represents the actual number of units earned by the Reporting Person pursuant to the satisfaction of performance conditions."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F6","text":"On March 31, 2023 the Reporting Person was awarded a target number of performance-based restricted stock units (\"PRSUs\"), subject to satisfaction of performance conditions as determined by the Board of Directors of OPAL Fuels Inc. Each PRSU represented the right to receive, at settlement, one share of Class A common stock. The amount shown represents the actual number of units earned by the Reporting Person pursuant to the satisfaction of performance conditions."}],"balance_after":0,"derivative":{"underlying":"Class A common stock","underlying_shares":23243},"source":{"system":"sec-edgar","filing":"0001628280-26-023265","document":"wk-form4_1775162945.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":12,"url":"https://www.sec.gov/Archives/edgar/data/1827035/000162828026023265/wk-form4_1775162945.xml","form_type":"4"}},{"id":818661,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54157,"kind":"person","name":"Maurer Jonathan Gilbert","position":1,"cik":"0001827035","reported_name":"Maurer Jonathan Gilbert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Co-Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2026-04-02T16:49:08.000Z","date":"2026-03-31","kind":"exercise","planned":false,"acquired":false,"shares":163143,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A common stock on their scheduled vesting date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"On March 31, 2025, the Reporting Person was granted 489,429 restricted stock units (\"RSUs\") pursuant to the terms of the Issuer's 2022 Omnibus Equity Incentive Plan (the \"Plan\"). RSUs were scheduled to vest in three (3) equal installments on each of the following dates: (i) March 31, 2026, (ii) March 31, 2027, and (iii) March 31, 2028, provided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"On March 31, 2025, the Reporting Person was granted 489,429 restricted stock units (\"RSUs\") pursuant to the terms of the Issuer's 2022 Omnibus Equity Incentive Plan (the \"Plan\"). RSUs were scheduled to vest in three (3) equal installments on each of the following dates: (i) March 31, 2026, (ii) March 31, 2027, and (iii) March 31, 2028, provided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock."}],"balance_after":326286,"derivative":{"underlying":"Class A common stock","underlying_shares":163143},"source":{"system":"sec-edgar","filing":"0001628280-26-023265","document":"wk-form4_1775162945.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":11,"url":"https://www.sec.gov/Archives/edgar/data/1827035/000162828026023265/wk-form4_1775162945.xml","form_type":"4"}},{"id":818660,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54157,"kind":"person","name":"Maurer Jonathan Gilbert","position":1,"cik":"0001827035","reported_name":"Maurer Jonathan Gilbert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Co-Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2026-04-02T16:49:08.000Z","date":"2026-03-31","kind":"exercise","planned":false,"acquired":false,"shares":67204,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A common stock on their scheduled vesting date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"On March 31, 2024, the Reporting Person was granted 201,613 restricted stock units (\"RSUs\") pursuant to the terms of the Issuer's 2022 Omnibus Equity Incentive Plan (the \"Plan\"). RSUs were scheduled to vest in three (3) equal installments on each of the following dates:  (i) March 31, 2025, (ii) March 31, 2026, and (iii) March 31, 2027, provided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"On March 31, 2024, the Reporting Person was granted 201,613 restricted stock units (\"RSUs\") pursuant to the terms of the Issuer's 2022 Omnibus Equity Incentive Plan (the \"Plan\"). RSUs were scheduled to vest in three (3) equal installments on each of the following dates:  (i) March 31, 2025, (ii) March 31, 2026, and (iii) March 31, 2027, provided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock."}],"balance_after":67204,"derivative":{"underlying":"Class A common stock","underlying_shares":67204},"source":{"system":"sec-edgar","filing":"0001628280-26-023265","document":"wk-form4_1775162945.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/1827035/000162828026023265/wk-form4_1775162945.xml","form_type":"4"}},{"id":818659,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54157,"kind":"person","name":"Maurer Jonathan Gilbert","position":1,"cik":"0001827035","reported_name":"Maurer Jonathan Gilbert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Co-Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2026-04-02T16:49:08.000Z","date":"2026-03-31","kind":"exercise","planned":false,"acquired":false,"shares":35868,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A common stock on their scheduled vesting date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"On March 31, 2023, the Reporting Person was granted 107,605 restricted stock units (\"RSUs\") pursuant to the terms of the Issuer's 2022 Omnibus Equity Incentive Plan (the \"Plan\"). RSUs were scheduled to vest in three (3) equal installments on each of the following dates:  (i) March 31, 2024, (ii) March 31, 2025, and (iii) March 31, 2026, provided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"On March 31, 2023, the Reporting Person was granted 107,605 restricted stock units (\"RSUs\") pursuant to the terms of the Issuer's 2022 Omnibus Equity Incentive Plan (the \"Plan\"). RSUs were scheduled to vest in three (3) equal installments on each of the following dates:  (i) March 31, 2024, (ii) March 31, 2025, and (iii) March 31, 2026, provided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. 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This transaction represents the settlement of restricted stock units in shares of Class A common stock on their scheduled vesting date."}],"balance_after":370204,"source":{"system":"sec-edgar","filing":"0001628280-26-023265","document":"wk-form4_1775162945.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1827035/000162828026023265/wk-form4_1775162945.xml","form_type":"4"}},{"id":818656,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54157,"kind":"person","name":"Maurer Jonathan Gilbert","position":1,"cik":"0001827035","reported_name":"Maurer Jonathan Gilbert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Co-Chief Executive Officer"}}],"security":"Class A common stock","published_at":"2026-04-02T16:49:08.000Z","date":"2026-03-31","kind":"tax_withholding","planned":false,"acquired":false,"shares":58813,"price":2.52,"value":148208.76,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"Represents the shares held by the Company to satisfy tax withholding requirements on vesting of restricted stock units. The total value of securities withheld was based on a price of $2.52 per share, the closing price of Class A common stock on March 31, 2026."}],"balance_after":346961,"source":{"system":"sec-edgar","filing":"0001628280-26-023265","document":"wk-form4_1775162945.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1827035/000162828026023265/wk-form4_1775162945.xml","form_type":"4"}},{"id":818655,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54157,"kind":"person","name":"Maurer Jonathan Gilbert","position":1,"cik":"0001827035","reported_name":"Maurer Jonathan Gilbert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Co-Chief Executive Officer"}}],"security":"Class A common stock","published_at":"2026-04-02T16:49:08.000Z","date":"2026-03-31","kind":"exercise","planned":false,"acquired":true,"shares":163143,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A common stock on their scheduled vesting date."}],"balance_after":405774,"source":{"system":"sec-edgar","filing":"0001628280-26-023265","document":"wk-form4_1775162945.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1827035/000162828026023265/wk-form4_1775162945.xml","form_type":"4"}},{"id":818654,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54157,"kind":"person","name":"Maurer Jonathan Gilbert","position":1,"cik":"0001827035","reported_name":"Maurer Jonathan Gilbert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Co-Chief Executive Officer"}}],"security":"Class A common stock","published_at":"2026-04-02T16:49:08.000Z","date":"2026-03-31","kind":"tax_withholding","planned":false,"acquired":false,"shares":24227,"price":2.52,"value":61052.04,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"Represents the shares held by the Company to satisfy tax withholding requirements on vesting of restricted stock units. The total value of securities withheld was based on a price of $2.52 per share, the closing price of Class A common stock on March 31, 2026."}],"balance_after":242631,"source":{"system":"sec-edgar","filing":"0001628280-26-023265","document":"wk-form4_1775162945.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1827035/000162828026023265/wk-form4_1775162945.xml","form_type":"4"}},{"id":818653,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54157,"kind":"person","name":"Maurer Jonathan Gilbert","position":1,"cik":"0001827035","reported_name":"Maurer Jonathan Gilbert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Co-Chief Executive Officer"}}],"security":"Class A common stock","published_at":"2026-04-02T16:49:08.000Z","date":"2026-03-31","kind":"exercise","planned":false,"acquired":true,"shares":67204,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A common stock on their scheduled vesting date."}],"balance_after":266858,"source":{"system":"sec-edgar","filing":"0001628280-26-023265","document":"wk-form4_1775162945.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1827035/000162828026023265/wk-form4_1775162945.xml","form_type":"4"}},{"id":818652,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54157,"kind":"person","name":"Maurer Jonathan Gilbert","position":1,"cik":"0001827035","reported_name":"Maurer Jonathan Gilbert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Co-Chief Executive Officer"}}],"security":"Class A common stock","published_at":"2026-04-02T16:49:08.000Z","date":"2026-03-31","kind":"tax_withholding","planned":false,"acquired":false,"shares":12930,"price":2.52,"value":32583.6,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"Represents the shares held by the Company to satisfy tax withholding requirements on vesting of restricted stock units. The total value of securities withheld was based on a price of $2.52 per share, the closing price of Class A common stock on March 31, 2026."}],"balance_after":199654,"source":{"system":"sec-edgar","filing":"0001628280-26-023265","document":"wk-form4_1775162945.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1827035/000162828026023265/wk-form4_1775162945.xml","form_type":"4"}},{"id":818651,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54157,"kind":"person","name":"Maurer Jonathan Gilbert","position":1,"cik":"0001827035","reported_name":"Maurer Jonathan Gilbert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Co-Chief Executive Officer"}}],"security":"Class A common stock","published_at":"2026-04-02T16:49:08.000Z","date":"2026-03-31","kind":"exercise","planned":false,"acquired":true,"shares":35868,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A common stock on their scheduled vesting date."}],"balance_after":212584,"source":{"system":"sec-edgar","filing":"0001628280-26-023265","document":"wk-form4_1775162945.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1827035/000162828026023265/wk-form4_1775162945.xml","form_type":"4"}},{"id":820373,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54353,"kind":"person","name":"Birck Darrell","position":1,"cik":"0002047903","reported_name":"Birck Darrell","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Stock options (right to buy)","published_at":"2026-04-02T16:40:32.000Z","date":"2026-03-31","kind":"grant","planned":false,"acquired":true,"shares":62326,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F5","text":"Granted pursuant to the Issuer's 2022 Omnibus Equity Incentive Plan (the \"Plan\")."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"The Reporting Person was granted an option to purchase shares of the Issuer's Class A common stock (the \"Option\") at an exercise price of $2.52 per share, which was the volume weighted average price of the Issuer's Class A common stock for the five days immediately preceding March 31, 2026, as quoted on the Nasdaq Stock Market. The Option vests in three (3) equal installments on each of the following dates: (i) March 31, 2027, (ii) March 31, 2028, and (iii) March 31, 2029, provided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F7","text":"In the event that the Reporting Person's employment is terminated by reason of the Reporting Person's disability or termination without cause, the Options shall vest with respect to the number of shares of Class A common stock that would have vested upon the next vesting date following such termination, had the Reporting Person remained an employee."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F8","text":"Notwithstanding the foregoing, upon the occurrence of a termination of employment by reason of the Reporting Person's (i) termination without cause; or (ii) resignation for good reason, in connection with or within the 24 months following the consummation of a Change in Control (as defined in the Plan and the relevant award agreement), any unvested portion of the Option shall accelerate and vest in full."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F9","text":"Upon the occurrence of a termination by reason of the Reporting Person's death, any unvested portion of the Option shall accelerate and vest in full."}],"balance_after":62326,"derivative":{"exercise_price":2.52,"expiration_date":"2036-03-31","underlying":"Class A common stock","underlying_shares":62326},"source":{"system":"sec-edgar","filing":"0001628280-26-023254","document":"wk-form4_1775162422.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/2047903/000162828026023254/wk-form4_1775162422.xml","form_type":"4"}},{"id":820372,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54353,"kind":"person","name":"Birck Darrell","position":1,"cik":"0002047903","reported_name":"Birck Darrell","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Restricted Stock Units","published_at":"2026-04-02T16:40:32.000Z","date":"2026-03-31","kind":"grant","planned":false,"acquired":true,"shares":111576,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"On March 31, 2026, the Reporting Person was granted 111,576 RSUs pursuant to the Plan. RSUs are scheduled to vest in three (3) equal installments on each of the following dates: (i) March 31, 2027, (ii) March 31, 2028, and (iii) March 31, 2029, provided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"On March 31, 2026, the Reporting Person was granted 111,576 RSUs pursuant to the Plan. RSUs are scheduled to vest in three (3) equal installments on each of the following dates: (i) March 31, 2027, (ii) March 31, 2028, and (iii) March 31, 2029, provided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"On March 31, 2026, the Reporting Person was granted 111,576 RSUs pursuant to the Plan. RSUs are scheduled to vest in three (3) equal installments on each of the following dates: (i) March 31, 2027, (ii) March 31, 2028, and (iii) March 31, 2029, provided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock."}],"balance_after":111576,"derivative":{"underlying":"Class A common stock","underlying_shares":111576},"source":{"system":"sec-edgar","filing":"0001628280-26-023254","document":"wk-form4_1775162422.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/2047903/000162828026023254/wk-form4_1775162422.xml","form_type":"4"}},{"id":820371,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54353,"kind":"person","name":"Birck Darrell","position":1,"cik":"0002047903","reported_name":"Birck Darrell","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Restricted Stock Units","published_at":"2026-04-02T16:40:32.000Z","date":"2026-03-31","kind":"exercise","planned":false,"acquired":false,"shares":36708,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A common stock on their scheduled vesting date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"On March 31, 2025, the Reporting Person was granted 110,122 restricted stock units (\"RSUs\") pursuant to the terms of the Issuer's 2022 Omnibus Equity Incentive Plan (the \"Plan\"). RSUs were scheduled to vest in three (3) equal installments on each of the following dates: (i) March 31, 2026, (ii) March 31, 2027, and (iii) March 31, 2028, provided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"On March 31, 2025, the Reporting Person was granted 110,122 restricted stock units (\"RSUs\") pursuant to the terms of the Issuer's 2022 Omnibus Equity Incentive Plan (the \"Plan\"). RSUs were scheduled to vest in three (3) equal installments on each of the following dates: (i) March 31, 2026, (ii) March 31, 2027, and (iii) March 31, 2028, provided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock."}],"balance_after":73414,"derivative":{"underlying":"Class A common stock","underlying_shares":36708},"source":{"system":"sec-edgar","filing":"0001628280-26-023254","document":"wk-form4_1775162422.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/2047903/000162828026023254/wk-form4_1775162422.xml","form_type":"4"}},{"id":820370,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54353,"kind":"person","name":"Birck Darrell","position":1,"cik":"0002047903","reported_name":"Birck Darrell","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Class A common stock","published_at":"2026-04-02T16:40:32.000Z","date":"2026-03-31","kind":"tax_withholding","planned":false,"acquired":false,"shares":8938,"price":2.52,"value":22523.76,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"Represents the shares held by the Company to satisfy tax withholding requirements on vesting of restricted stock units. The total value of securities withheld was based on a price of $2.52 per share, the closing price of Class A common stock on March 31, 2026."}],"balance_after":27770,"source":{"system":"sec-edgar","filing":"0001628280-26-023254","document":"wk-form4_1775162422.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/2047903/000162828026023254/wk-form4_1775162422.xml","form_type":"4"}},{"id":820369,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54353,"kind":"person","name":"Birck Darrell","position":1,"cik":"0002047903","reported_name":"Birck Darrell","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Class A common stock","published_at":"2026-04-02T16:40:32.000Z","date":"2026-03-31","kind":"exercise","planned":false,"acquired":true,"shares":36708,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A common stock on their scheduled vesting date."}],"balance_after":36708,"source":{"system":"sec-edgar","filing":"0001628280-26-023254","document":"wk-form4_1775162422.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2047903/000162828026023254/wk-form4_1775162422.xml","form_type":"4"}},{"id":820404,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54358,"kind":"person","name":"Hasan Kazi","position":1,"cik":"0002051761","reported_name":"Hasan Kazi","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Stock options (right to buy)","published_at":"2026-04-02T16:37:35.000Z","date":"2026-03-31","kind":"grant","planned":false,"acquired":true,"shares":101988,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F6","text":"Granted pursuant to the Issuer's 2022 Omnibus Equity Incentive Plan (the \"Plan\")."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F7","text":"The Reporting Person was granted an option to purchase shares of the Issuer's Class A common stock (the \"Option\") at an exercise price of $2.52 per share, which was the volume weighted average\nprice of the Issuer's Class A common stock for the five days immediately preceding March 31, 2026, as quoted on the Nasdaq Stock Market. The Option vests in three (3) equal installments on each of\nthe following dates: (i) March 31, 2027, (ii) March 31, 2028, and (iii) March 31, 2029, provided, that the Reporting Person continues to provide services to the Issuer through the applicable vesting date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F8","text":"In the event that the Reporting Person's employment is terminated by reason of the Reporting Person's disability or termination without cause, the Options shall vest with respect to the number of\nshares of Class A common stock that would have vested upon the next vesting date following such termination, had the Reporting Person remained an employee."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F9","text":"Notwithstanding the foregoing, upon the occurrence of a termination of employment by reason of the Reporting Person's (i) termination without cause; or (ii) resignation for good reason, in\nconnection with or within the 24 months following the consummation of a Change in Control (as defined in the Plan and the relevant award agreement), any unvested portion of the Option shall\naccelerate and vest in full."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F10","text":"Upon the occurrence of a termination by reason of the Reporting Person's death, any unvested portion of the Option shall accelerate and vest in full."}],"balance_after":101988,"derivative":{"exercise_price":2.52,"expiration_date":"2036-03-31","underlying":"Class A common stock","underlying_shares":101988},"source":{"system":"sec-edgar","filing":"0001628280-26-023242","document":"wk-form4_1775162251.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/2051761/000162828026023242/wk-form4_1775162251.xml","form_type":"4"}},{"id":820403,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54358,"kind":"person","name":"Hasan Kazi","position":1,"cik":"0002051761","reported_name":"Hasan Kazi","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Restricted Stock Units","published_at":"2026-04-02T16:37:35.000Z","date":"2026-03-31","kind":"grant","planned":false,"acquired":true,"shares":182579,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F5","text":"On March 31, 2026, the Reporting Person was granted 182,975 RSUs pursuant to the Plan. RSUs are scheduled to vest in three (3) equal installments on each of the following dates: (i) March 31,\n2027, (ii) March 31, 2028, and (iii) March 31, 2029, provided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit\nrepresents the right to receive, at settlement, one share of Class A common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"On March 31, 2026, the Reporting Person was granted 182,975 RSUs pursuant to the Plan. RSUs are scheduled to vest in three (3) equal installments on each of the following dates: (i) March 31,\n2027, (ii) March 31, 2028, and (iii) March 31, 2029, provided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit\nrepresents the right to receive, at settlement, one share of Class A common stock."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"On March 31, 2026, the Reporting Person was granted 182,975 RSUs pursuant to the Plan. RSUs are scheduled to vest in three (3) equal installments on each of the following dates: (i) March 31,\n2027, (ii) March 31, 2028, and (iii) March 31, 2029, provided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit\nrepresents the right to receive, at settlement, one share of Class A common stock."}],"balance_after":182579,"derivative":{"underlying":"Class A common stock","underlying_shares":182579},"source":{"system":"sec-edgar","filing":"0001628280-26-023242","document":"wk-form4_1775162251.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/2051761/000162828026023242/wk-form4_1775162251.xml","form_type":"4"}},{"id":820402,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54358,"kind":"person","name":"Hasan Kazi","position":1,"cik":"0002051761","reported_name":"Hasan Kazi","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Restricted Stock Units","published_at":"2026-04-02T16:37:35.000Z","date":"2026-03-31","kind":"exercise","planned":false,"acquired":false,"shares":146829,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A\ncommon stock on their scheduled vesting date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"On March 31, 2025, the Reporting Person was granted 293,657 RSUs pursuant to the Plan. RSUs were scheduled to vest in two (2) equal installments on each of the following dates: (i) March 31, 2026 and (ii) March 31, 2027, provided that the Reporting Person continues to provide\nservices to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"On March 31, 2025, the Reporting Person was granted 293,657 RSUs pursuant to the Plan. RSUs were scheduled to vest in two (2) equal installments on each of the following dates: (i) March 31, 2026 and (ii) March 31, 2027, provided that the Reporting Person continues to provide\nservices to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock."}],"balance_after":146828,"derivative":{"underlying":"Class A common stock","underlying_shares":146829},"source":{"system":"sec-edgar","filing":"0001628280-26-023242","document":"wk-form4_1775162251.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/2051761/000162828026023242/wk-form4_1775162251.xml","form_type":"4"}},{"id":820401,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54358,"kind":"person","name":"Hasan Kazi","position":1,"cik":"0002051761","reported_name":"Hasan Kazi","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Restricted Stock Units","published_at":"2026-04-02T16:37:35.000Z","date":"2026-03-31","kind":"exercise","planned":false,"acquired":false,"shares":73415,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A\ncommon stock on their scheduled vesting date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"On March 31, 2025, the Reporting Person was granted 220,243 RSUs pursuant to the Plan. RSUs were\nscheduled to vest in three (3) equal installments on each of the following dates: (i) March 31, 2026, (ii) March 31, 2027, and (iii) March 31, 2028, provided that the Reporting Person continues to provide\nservices to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"On March 31, 2025, the Reporting Person was granted 220,243 RSUs pursuant to the Plan. RSUs were\nscheduled to vest in three (3) equal installments on each of the following dates: (i) March 31, 2026, (ii) March 31, 2027, and (iii) March 31, 2028, provided that the Reporting Person continues to provide\nservices to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock."}],"balance_after":146828,"derivative":{"underlying":"Class A common stock","underlying_shares":73415},"source":{"system":"sec-edgar","filing":"0001628280-26-023242","document":"wk-form4_1775162251.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/2051761/000162828026023242/wk-form4_1775162251.xml","form_type":"4"}},{"id":820400,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54358,"kind":"person","name":"Hasan Kazi","position":1,"cik":"0002051761","reported_name":"Hasan Kazi","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Class A common stock","published_at":"2026-04-02T16:37:35.000Z","date":"2026-03-31","kind":"tax_withholding","planned":false,"acquired":false,"shares":52931,"price":2.52,"value":133386.12,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"Represents the shares held by the Company to satisfy tax withholding requirements on vesting of restricted stock units. The total value of securities withheld was based on a price of $2.52 per share,\nthe closing price of Class A common stock on March 31, 2026."}],"balance_after":140847,"source":{"system":"sec-edgar","filing":"0001628280-26-023242","document":"wk-form4_1775162251.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/2051761/000162828026023242/wk-form4_1775162251.xml","form_type":"4"}},{"id":820399,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54358,"kind":"person","name":"Hasan Kazi","position":1,"cik":"0002051761","reported_name":"Hasan Kazi","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Class A common stock","published_at":"2026-04-02T16:37:35.000Z","date":"2026-03-31","kind":"exercise","planned":false,"acquired":true,"shares":146829,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A\ncommon stock on their scheduled vesting date."}],"balance_after":193778,"source":{"system":"sec-edgar","filing":"0001628280-26-023242","document":"wk-form4_1775162251.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/2051761/000162828026023242/wk-form4_1775162251.xml","form_type":"4"}},{"id":820398,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54358,"kind":"person","name":"Hasan Kazi","position":1,"cik":"0002051761","reported_name":"Hasan Kazi","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Class A common stock","published_at":"2026-04-02T16:37:35.000Z","date":"2026-03-31","kind":"tax_withholding","planned":false,"acquired":false,"shares":26466,"price":2.52,"value":66694.32,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"Represents the shares held by the Company to satisfy tax withholding requirements on vesting of restricted stock units. The total value of securities withheld was based on a price of $2.52 per share,\nthe closing price of Class A common stock on March 31, 2026."}],"balance_after":46949,"source":{"system":"sec-edgar","filing":"0001628280-26-023242","document":"wk-form4_1775162251.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/2051761/000162828026023242/wk-form4_1775162251.xml","form_type":"4"}},{"id":820397,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54358,"kind":"person","name":"Hasan Kazi","position":1,"cik":"0002051761","reported_name":"Hasan Kazi","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Class A common stock","published_at":"2026-04-02T16:37:35.000Z","date":"2026-03-31","kind":"exercise","planned":false,"acquired":true,"shares":73415,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A\ncommon stock on their scheduled vesting date."}],"balance_after":73415,"source":{"system":"sec-edgar","filing":"0001628280-26-023242","document":"wk-form4_1775162251.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2051761/000162828026023242/wk-form4_1775162251.xml","form_type":"4"}},{"id":819141,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54224,"kind":"person","name":"Martell James J","position":1,"cik":"0001320333","reported_name":"Martell James J","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2026-04-02T16:30:32.000Z","date":"2026-03-31","kind":"grant","planned":false,"acquired":true,"shares":54773,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"On March 31, 2026, the Reporting Person was granted 54,773 RSUs pursuant to the terms of the Issuer's 2022 Omnibus Equity Incentive Plan. The RSUs are scheduled to vest on March 31, 2027,\nprovided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of\nClass A common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"On March 31, 2026, the Reporting Person was granted 54,773 RSUs pursuant to the terms of the Issuer's 2022 Omnibus Equity Incentive Plan. The RSUs are scheduled to vest on March 31, 2027,\nprovided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of\nClass A common stock."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"On March 31, 2026, the Reporting Person was granted 54,773 RSUs pursuant to the terms of the Issuer's 2022 Omnibus Equity Incentive Plan. The RSUs are scheduled to vest on March 31, 2027,\nprovided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of\nClass A common stock."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F2","text":"On March 31, 2026, the Reporting Person was granted 54,773 RSUs pursuant to the terms of the Issuer's 2022 Omnibus Equity Incentive Plan. The RSUs are scheduled to vest on March 31, 2027,\nprovided that the Reporting Person continues to provide services to the Issuer through the applicable vesting date. Each restricted stock unit represents the right to receive, at settlement, one share of\nClass A common stock."}],"balance_after":54773,"derivative":{"underlying":"Class A common stock","underlying_shares":54773},"source":{"system":"sec-edgar","filing":"0001628280-26-023223","document":"wk-form4_1775161829.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1320333/000162828026023223/wk-form4_1775161829.xml","form_type":"4"}},{"id":819140,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54224,"kind":"person","name":"Martell James J","position":1,"cik":"0001320333","reported_name":"Martell James J","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2026-04-02T16:30:32.000Z","date":"2026-03-31","kind":"exercise","planned":false,"acquired":false,"shares":66073,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A\ncommon stock on their scheduled vesting date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A\ncommon stock on their scheduled vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A\ncommon stock on their scheduled vesting date."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A\ncommon stock on their scheduled vesting date."}],"balance_after":0,"derivative":{"underlying":"Class A common stock","underlying_shares":66073},"source":{"system":"sec-edgar","filing":"0001628280-26-023223","document":"wk-form4_1775161829.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1320333/000162828026023223/wk-form4_1775161829.xml","form_type":"4"}},{"id":819139,"issuer":{"id":501,"kind":"organization","name":"OPAL Fuels Inc.","symbol":"OPAL"},"owners":[{"id":54224,"kind":"person","name":"Martell James J","position":1,"cik":"0001320333","reported_name":"Martell James J","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A common stock","published_at":"2026-04-02T16:30:32.000Z","date":"2026-03-31","kind":"exercise","planned":false,"acquired":true,"shares":66073,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each restricted stock unit represents the right to receive, at settlement, one share of Class A common stock. This transaction represents the settlement of restricted stock units in shares of Class A\ncommon stock on their scheduled vesting date."}],"balance_after":107224,"source":{"system":"sec-edgar","filing":"0001628280-26-023223","document":"wk-form4_1775161829.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1320333/000162828026023223/wk-form4_1775161829.xml","form_type":"4"}}],"next_cursor":"2026-04-02T16:30:32.000000Z,819139"}