Sec Form 4 Filing - Clean Earth Acquisitions Sponsor LLC @ Alternus Clean Energy, Inc. - 2023-12-22

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 Clean Earth Acquisitions Sponsor LLC 2. Issuer Name and Ticker or Trading Symbol Alternus Clean Energy, Inc. [ ALCE] 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) C/O ALTERNUS CLEAN ENERGY, INC., 360 KINGSLEY PARK DRIVE, SUITE 250 3. Date of Earliest Transaction (MM/DD/YY) 12/22/2023 (Street) FORT MILL, SC29715 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 Common Stock 12/22/2023 J( 1 ) 7,666,667 A 8,556,667 D ( 3 ) Common Stock 12/22/2023 J( 1 ) 225,000 A 8,781,667 D ( 3 )

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 Warrants to purchase Common S tock $ 11.5 12/22/2023 P( 5 ) 445,000 ( 5 ) ( 5 ) Common Stock 445,000 ( 5 ) 445,000 D ( 3 )

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Clean Earth Acquisitions Sponsor LLC C/O ALTERNUS CLEAN ENERGY, INC. 360 KINGSLEY PARK DRIVE, SUITE 250 FORT MILL, SC29715 X Signatures /s/ Alex Greystoke - Clean Earth Acquisitions Sponsor LLC, By: Alex Greystoke, Manager 01/29/2024 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Represents securities acquired in connection with the transactions consummated on December 22, 2023 pursuant to that certain Business Combination Agreement, dated October 12, 2022 (as it has been and may be amended, supplemented or otherwise modified from time to time, the "Business Combination Agreement"), by and among Alternus Clean Energy, Inc. (f/k/a Clean Earth Acquisitions Corp.) (the "Issuer"), Alternus Energy Group Plc, , and Clean Earth Acquisitions Sponsor LLC ("Sponsor ") (the "Business Combination"). ( 2 )In connection with the closing of the Business Combination, each share of Issuer's Class B common stock issued and outstanding immediately prior to the effective time of the closing of the Business Combination was cancelled and converted into the right to receive the number of shares of common stock, par value $0.0001, per share of the Issuer (the "Common Stock") of the Issuer equal to an exchange ratio calculated at closing (the "Common Stock Exchange Ratio"). ( 3 )The Board of Managers of the reporting person are Alex Greystoke, David Saab and Martha Ross. Each of these Individuals disclaims ownership of the securities reported on this Form 4 except to the extent of his or her pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership for purposes of Section 16 or for any other purpose. ( 4 )Issued for conversion of promissory note with outstanding principal of $225,000 upon the closing of the Business Combination. ( 5 )Pursuant to the Private Placement Units Purchase Agreement, Units Purchase Agreement, dated February 23, 2022, by and between the Issuer and the Sponsor, the Sponsor purchased an aggregate of 890,000 units, with each unit consisting of a right to acquire (a) one share of class A common stock and (b) one one-half of one warrant to purchase one share of class A common stock (the "Private Placement Warrants"). Upon consummation of the Business Combination, the Private Placement Warrants become exercisable beginning December 22, 2023 for one share of Common Stock at a price of $11.50 per share. The Private Placement Warrants expire on the fifth anniversary of the consummation of the Business Combination.

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