Sec Form 4 Filing - BECERRA JUAN J @ MECHANICAL TECHNOLOGY INC - 2007-06-18

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 BECERRA JUAN J 2. Issuer Name and Ticker or Trading Symbol MECHANICAL TECHNOLOGY INC [ MKTY] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) X __ Other (specify below) VP Market & Bus Dev - MTI MFCI/VP Market & Bus Dev - MTI MFCI (Last) (First) (Middle) 431 NEW KARNER ROAD 3. Date of Earliest Transaction (MM/DD/YY) 06/18/2007 (Street) ALBANY, NY12205 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

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 Stock Options (Right to Buy) $ 1.34 06/18/2007 A 15,000 06/18/2007( 1 ) 06/17/2014 Common Stock 15,000 $ 1.34 15,000 D Stock Options (Right to Buy) $ 1.34 06/18/2007 A 11,250 06/18/2007( 2 ) 06/17/2014 Common Stock 11,250 $ 1.34 26,250 D Stock Options (Right to Buy) $ 1.34 06/18/2007 A 48,750 01/01/2008( 3 ) 06/18/2014 Common Stock 48,750 $ 1.34 48,750 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other BECERRA JUAN J 431 NEW KARNER ROAD ALBANY, NY12205 VP Market & Bus Dev - MTI MFCI VP Market & Bus Dev - MTI MFCI Signatures By: Cynthia A. Scheuer as Attorney in Fact for 06/20/2007 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Immediately Vested ( 2 )Options vest based upon the successful completion of all external Company milestones and certain internal Company milestones established by the Company's Board of Directors. These goals must be achieved by December 31, 2007 or the options will be forfeited. ( 3 )Options vest quarterly at a rate of 6.25% per quarter with first vest occurring on January 1, 2008.

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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