Sec Form 4 Filing - Perseus ENRG Investment, L.L.C. @ Clean Energy Fuels Corp. - 2007-12-04

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 Perseus ENRG Investment, L.L.C. 2. Issuer Name and Ticker or Trading Symbol Clean Energy Fuels Corp. [ CLNE] 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 PERSEUS, L.L.C.,, 2099 PENNSYLVANIA AVENUE, N.W. SUITE 900 3. Date of Earliest Transaction (MM/DD/YY) 12/04/2007 (Street) WASHINGTON, DC20006 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 12/04/2007 J( 1 ) 5,364,971 D $ 0 1,000,000 D ( 2 ) ( 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

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Perseus ENRG Investment, L.L.C. C/O PERSEUS, L.L.C., 2099 PENNSYLVANIA AVENUE, N.W. SUITE 900 WASHINGTON, DC20006 X Signatures Perseus ENRG Investment, L.L.C./s/ Kenneth M. Socha, Executive Vice President 12/06/2007 Signature of Reporting Person Date

Explanation of Responses:

( 1 )On December 4, 2007, Perseus ENRG Investment, L.L.C. ("Perseus ENRG") distributed 5,364,971 shares to its members, Perseus 2000, L.L.C. ("Perseus 2000") and Perseus 2000 Expansion, L.L.C. ("Perseus 2000 Expansion") in accordance with its governing documents for no consideration. Also on December 4, 2007, Perseus 2000 and Perseus 2000 Expansion distributed these shares to their respective members in accordance with their respective governing documents and certain of those members distributed shares to their respective members in accordance with their respective governing documents. ( 2 )All of the 1,000,000 shares reported herein are held by Perseus ENRG. As previously reported, Perseus 2000 and Perseus 2000 Expansion are the members of Perseus ENRG and have contributed to Perseus ENRG all of the Clean Energy Fuels Corp. stock that they owned. The managing member of Perseus 2000 is Perseus 2000 Management, L.L.C., the managing member of Perseus 2000 Management, L.L.C. is Perseus, L.L.C. and the managing member of Perseus, L.L.C. is Perseuspur, L.L.C. Similiarly, the managing member of Perseus 2000 Expansion is Perseus 2000 Expansion Management, L.L.C., and the managing member of Perseus 2000 Expansion Management, L.L.C. is Perseuspur, L.L.C. Frank H. Pearl, individually, owns 72.7% of Perseuspur, L.L.C. Mr. Pearl also is the sole director and sole shareholder of Rappahannock Investment Company, which in turn owns the remaining 27.3% of Perseuspur, L.L.C. (Continued to Footnote 3). ( 3 )(Continued from Footnote 2) As separately reported by Mr. Pearl, by virture of his control over these entities, Mr. Pearl may be deemed beneficial owner of such 1,000,000 shares.

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).

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