-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
IhrQU3Ne4n9Ey3dzDXXJGN9MWLW/cHTv/D21r5QqSMZmIS7re1TJZLrX6mVQc1E4
3ccgsL6ILb5sGOM/IJbFJg==
SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D/A (Amendment No.10 )* Under the Securities Exchange Act of 1934 Plug Power, Inc. (Name of Issuer) Common Stock (par value $0.01 per share) (Title of Class of Securities) 72919P103 (CUSIP Number) Catherine S. Hill, Esq. Mechanical Technology Incorporated 431 New Karner Road Albany, New York 12205 (Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications) August 18, 2003 (Date of event which Requires Filing of this Statement) If the filing person has previously filed a statement on Schedule 13G to report the acquisition which is the subject of this Schedule 13D, and is filing this schedule because of Sections 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box: ?
Note: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See Section 240.13d-7 for other parties to whom copies are to be sent. * The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page. The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes). CUSIP No. 72919P103 1 Name of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only). Mechanical Technology Incorporated I.R.S. Identification No. 141462255 2 Check the Appropriate Box if a Member of a Group (See Instructions) (a) [ ] (b) [ ] 3 SEC Use Only 4 Source of Funds (See Instructions) 5 Check if Disclosure of Legal Proceedings is Required Pursuant to Items 2(d) or 2(e) [ ] 6 Citizenship or Place of Organization State of New York 7 Sole Voting Power 6,073,227 Number of Shares Beneficially Owned by Reporting Person With 8 Shared Voting Power 0 9 Sole Dispositive Power 6,073,227 10 Shared Dispositive Power 0 11 Aggregate Amount Beneficially Owned by Each Reporting Person 6,073,227 12 Check Box if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions) [ ] 13 Percent of Class Represented by Amount in Row (11) 9.96% 14 Type of Reporting Person (see Instructions) CO Schedule 13D/A This Amendment No. 10 to the Schedule 13D amends and supplements the Schedule 13D originally filed on December 11, 2000 (the "Schedule 13D") by Mechanical Technology Inc., a New York Corporation. Unless otherwise defined herein, all capitalized terms used herein have the respective meanings given to such terms in the Schedule 13D. Item 4. Purpose of Transaction. Item 4 of the Schedule 13D is hereby amended to read as follows: The business conducted by the Issuer was initially developed by MTI prior to June 1997, and was contributed to Plug Power, LLC (the predecessor of the Company) in exchange for equity interests. On December 20, 2002, MTI entered into an exchange transaction with First Albany Companies Inc. (FAC) where 8 million shares of MTI common stock owned by FAC were exchanged for 2,721,088 shares of Plug Power common stock owned by MTI. On December 17, 2001, MTI entered into a plan under Rule 10b5-1 (the "Plan") pursuant to which MTI will sell shares of Common Stock of the Issuer. The Plan provided for the sale of, and MTI sold, 1.2 million shares in 2002. The Plan provides for the sale of 2 million shares in 2003. MTI sold 1.5 million shares pursuant to the Plan and on August 18, 2003 sold 500,000 shares pursuant to Rule 144. MTI has cancelled its Plan for the remainder of the year. In addition to the foregoing, as significant shareholders of Plug Power, MTI may consider, from time to time, (i) the acquisition of additional securities of the Issuer, or the disposition of securities of the Issuer, (ii) an extraordinary corporate transaction, such as a merger, reorganization or liquidation, involving the Issuer or any of its subsidiaries, (iii) a sale or transfer of a material amount of the assets of the Issuer or any of its subsidiaries, (iv) any change in the present board of directors or management of the Issuer, (v) any material change in the present capitalization or dividend policy of the Issuer, (vi) any other material change in the Issuer's business or corporate structure, (vii) changes in the Issuer's charter, bylaws, or instruments corresponding thereto or other actions which may impede the acquisition of control of the Issuer by any person; (viii) causing a class of securities of the Issuer to be delisted from a national securities exchange or to cease to be authorized t
o be quoted on an inter-dealer quotation system of a registered national securities association, (ix) causing a class of equity securities of the Issuer to become eligible for termination of a registration pursuant to Section 12(g)(4) of the Exchange Act, or (x) any action similar to any of those enumerated above. Item 5. Interest in Securities of the Issuer. Item 5 of the Schedule 13D is hereby amended to read as follows: As of August 18, 2003: (a) MTI is the direct and beneficial owner of 6,073,227 shares of the Issuer Common Stock, including shares covered by the Plan, representing 9.96% of the Common Stock outstanding. (b) MTI has the sole power to vote and sole dispositive power for 6,073,227 shares of the Issuer Common Stock. (c) During the past sixty (60) days MTI has sold shares of Common Stock of the Issuer, in open market transactions, as follows: Date Number of shares Price per share Date Number of shares Price per share 06/20/03 6,636 $ 5.0771 07/22/03 12,100 $ 4.3994 06/23/03 1,500 $ 5.0600 07/23/03 10,314 $ 4.5092 06/24/03 5,000 $ 4.7800 07/24/03 5,000 $ 4.5200 06/25/03 7,500 $ 4.8422 07/25/03 5,000 $ 4.4045 06/26/03 6,500 $ 4.8201 07/28/03 5,000 $ 4.5200 06/27/03 10,500 $ 4.8649 07/29/03 5,000 $ 4.5617 06/30/03 17,000 $ 4.7571 07/30/03 5,000 $ 4.5807 07/01/03 5,300 $ 4.5264 07/31/03 5,000 $ 4.5119 07/02/03 5,100 $ 4.5774 08/01/03 5,000 $ 4.3907 07/03/03 5,000 $ 4.6424 08/04/03 5,000 $ 4.2600 07/07/03 10,600 $ 4.6424 08/05/03 2,500 $ 4.2602 07/08/03 7,700 $ 4.8978 08/06/03 5,000 $ 4.1284 07/09/03 5,000 $ 4.9550 08/07/03 5,000 $ 4.0542 07/10/03 5,000 $ 4.9092 08/08/03 5,000 $ 4.0046 07/11/03 3,500 $ 4.9566 08/11/03 2,865 $ 4.1024 07/14/03 7,600 $ 4.9977 08/12/03 7,500 $ 4.0688 07/15/03 6,900 $ 4.7554 08/13/03 7,821 $ 4.1168 07/16/03 7,500 $ 4.7567 08/14/03 7,500 $ 4.1370 07/17/03 3,700 $ 4.6748 08/15/03 285,500 $ 4.9449 07/18/03 27,100 $ 4.6218 08/18/03 500,000 $ 5.2866 07/21/03 8,900 $4.4934 No other Control Person has purchased or sold any shares of Plug Power Common Stock. (d) Not applicable. (e) Not applicable. SIGNATURE After reasonable inquiry and to the best of my knowledge and belief, the undersigned certifies that the information set forth in this statement is true, correct and complete. Dated: August 20, 2003 Mechanical Technology Incorporated s/Cynthia A. Scheuer By: Cynthia A. Scheuer
-----END PRIVACY-ENHANCED MESSAGE-----