Sec Form 4 Filing - Revers Daniel R @ OPAL Fuels Inc. - 2023-12-15

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Revers Daniel R 2. Issuer Name and Ticker or Trading Symbol OPAL Fuels Inc. [ OPAL] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director X __ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 200 CLARENDON ST,, 55TH FLOOR 3. Date of Earliest Transaction (MM/DD/YY) 12/15/2023 (Street) BOSTON, MA02116 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Class A Common Stock 12/15/2023 S 661,444 D 619,731 D Class A Common Stock 12/15/2023 S 838,556 ( 1 ) D 1,776,117 I See footnote ( 2 )

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Revers Daniel R 200 CLARENDON ST, 55TH FLOOR BOSTON, MA02116 X Signatures By: /s/ Daniel R. Revers 12/19/2023 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The reported price is a volume weighted average price ("VWAP"). The reported securities were sold in open market transactions at prices ranging from $5.25 to $5.60, inclusive. The reporting person undertakes to provide to the SEC, the Issuer or any stockholder of the Issuer, upon request, the relevant amount of shares sold to the market at each price within the ranges set forth in this footnote. ( 2 )On December 15, 2023, 830,197 of the reported securities were sold by ArcLight CTC Holdings II, L.P., a Delaware limited partnership (the "Sponsor"), and 8,359 of the reported securities were sold by ACTC Holdings GP II, LLC, a Delaware limited liability company and general partner of the Sponsor ("ACTC GP"). After giving effect to such transactions, the reported securities consist of (i) 1,395,135 shares of Class A common stock held directly by the Sponsor, (ii) 322,227 shares of Class A common stock held directly by ACHP B, L.P., a Delaware limited partnership ("ACHP B") and (iii) 58,755 shares of Class A common stock held directly by ACTC GP. Mr. Revers has voting and investment discretion with respect to the securities held by the Sponsor, ACHP B and ACTC GP, and thus may be deemed to have beneficial ownership of such securities. Mr. Revers expressly disclaims any such beneficial ownership of such securities, except to the extent of his individual pecuniary interest therein.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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