Sec Form 4 Filing - Park Mungo @ CLEAN DIESEL TECHNOLOGIES INC - 2015-12-18

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 Park Mungo 2. Issuer Name and Ticker or Trading Symbol CLEAN DIESEL TECHNOLOGIES INC [ CDTI] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 1621 FISKE PLACE 3. Date of Earliest Transaction (MM/DD/YY) 12/18/2015 (Street) OXNARD, CA93033 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 12/18/2015 M 7,537 ( 1 ) A $ 0 32,721 ( 2 ) D

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 Restricted Share Units ( 3 ) 12/18/2015 M 7,537 ( 4 ) ( 4 ) Common Stock 7,537 $ 0 ( 3 ) 0 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Park Mungo 1621 FISKE PLACE OXNARD, CA93033 X Signatures /s/ Alfred Palomino, Attorney-in-Fact 12/22/2015 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Shares of Common Stock acquired upon settlement of Restricted Share Units (RSUs) granted May 20, 2015 pursuant to the Clean Diesel Technologies, Inc. (CDTI) Stock Incentive Plan. ( 2 )The total holdings include 7,538 shares underlying restricted stock units and share equivalent units that were previously reported in Table II. ( 3 )Each RSU represents a contingent right to receive one share of CDTI's common stock. ( 4 )RSU vests as to 50% on November 20, 2015, settlement of which was delayed until December 18, 2015, and 50% on the earlier of 1) May 20, 2016, or 2) immediately prior to the commencement of the CDTI's 2016 annual meeting of stockholders, in each case as long as the reporting person has continuously remained a director of, or consultant to, CDTI through such date. Issuance to occur as soon as practicable following the date of vesting, or as otherwise determined by the Compensation and Nominating Committee and subject to compliance with CDTI's Insider Trading Policy, but in all cases within two and one-half months following the end of CDTI's tax year that includes the date such RSUs vest.

Remarks: Exhibit 24 Power of Attorney

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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