SC 13D/A 1 sc0127.txt AMENDMENT NO. 1 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D UNDER THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. 1) DUQUESNE LIGHT HOLDINGS, INC. -------------------------------------------------------------------------------- (NAME OF ISSUER) Common Stock, no par value -------------------------------------------------------------------------------- (TITLE OF CLASS OF SECURITIES) 266233105 -------------------------------------------------------------------------------- (CUSIP NUMBER) Leanne Brown DUET Investment Holdings Limited Level 11, 1 Martin Place Sydney, NSW 2000 Australia Telephone: (011) (61) (2) 8232 8794 -------------------------------------------------------------------------------- (NAME, ADDRESS AND TELEPHONE NUMBER OF PERSONS AUTHORIZED TO RECEIVE NOTICES AND COMMUNICATIONS) August 11, 2006 -------------------------------------------------------------------------------- (DATE OF EVENT WHICH REQUIRES FILING OF THIS STATEMENT) If the Reporting Person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the following box. [ ] (Continued on following pages) -------------------------------------------------------------------------------- 1. Names of Reporting Persons: DUET Investment Holdings Limited -------------------------------------------------------------------------------- 2. Check the Appropriate Box if a Member of a Group (a) [ ] (b) [X] -------------------------------------------------------------------------------- 3. SEC USE Only -------------------------------------------------------------------------------- 4. Source of Funds: OO -------------------------------------------------------------------------------- 5. Check if Disclosure of Legal Proceedings is Required Pursuant to Items 2(d) or 2(e) [ ] -------------------------------------------------------------------------------- 6. Citizenship or Place of Organization: Victoria, Australia -------------------------------------------------------------------------------- 7. Sole Voting Power: Number of 0 shares Shares ----------------------------------------------------------------- Beneficially 8. Shared Voting Power: Owned by Each 6,818,827 shares Reporting ----------------------------------------------------------------- Person 9. Sole Dispositive Power: With 0 shares ----------------------------------------------------------------- 10.Shared Dispositive Power: 6,818,827 shares -------------------------------------------------------------------------------- 11. Aggregate Amount Beneficially Owned by Each Reporting Person 6,818,827 shares, Common Stock -------------------------------------------------------------------------------- 12. Check if the Aggregate Amount in Row (11) Excludes Certain Shares [X] -------------------------------------------------------------------------------- 13. Percent of Class Represented by Amount in Row (11) 7.7% of Common Stock(1) -------------------------------------------------------------------------------- 14. Type of Reporting Person: OO(2) -------------------------------------------------------------------------------- --------------------- (1) Based on the representation of Duquesne Light Holdings ("Duquesne") in Section 3.3(a) of the Stock Purchase Agreement (as defined in Item 4 of the Original Schedule 13D, as defined in Item 1 below) that 79,614,546 shares of the Common Stock (as defined in Item 1 of the Original Schedule 13D) were outstanding as of July 3, 2006, and adding to that number (i) the 6,818,827 shares of Common Stock to be issued in connection with the DIHL Purchase (as defined in Item 4 of the Original Schedule 13D) and (ii) the 2,017,405 shares to be issued in connection with the IFM Purchase (as defined in Item 4 of the Original Schedule 13D) (collectively, the "Declared Shares Outstanding"). (2) DUET Investment Holdings Limited is a limited liability company. Page 2 of 8 -------------------------------------------------------------------------------- 1. Names of Reporting Persons: Diversified Utility and Energy Trust No. 1 (DUET1) -------------------------------------------------------------------------------- 2. Check the Appropriate Box if a Member of a Group (a) [ ] (b) [X] -------------------------------------------------------------------------------- 3. SEC USE Only -------------------------------------------------------------------------------- 4. Source of Funds: OO -------------------------------------------------------------------------------- 5. Check if Disclosure of Legal Proceedings is Required Pursuant to Items 2(d) or 2(e) [ ] -------------------------------------------------------------------------------- 6. Citizenship or Place of Organization: Victoria, Australia -------------------------------------------------------------------------------- 7. Sole Voting Power: Number of 0 shares Shares ----------------------------------------------------------------- Beneficially 8. Shared Voting Power: Owned by Each 6,818,827 shares Reporting ----------------------------------------------------------------- Person 9. Sole Dispositive Power: With 0 shares ----------------------------------------------------------------- 10.Shared Dispositive Power: 6,818,827 shares -------------------------------------------------------------------------------- 11. Aggregate Amount Beneficially Owned by Each Reporting Person 6,818,827 shares, Common Stock -------------------------------------------------------------------------------- 12. Check if the Aggregate Amount in Row (11) Excludes Certain Shares [X] -------------------------------------------------------------------------------- 13. Percent of Class Represented by Amount in Row (11) 7.7% of Common Stock(3) -------------------------------------------------------------------------------- 14. Type of Reporting Person: HC-OO(4) -------------------------------------------------------------------------------- ------------------- (3) Based on the Declared Shares Outstanding. (4) DUET1 is an investment fund organized as a trust, as described below in Item 2. Page 3 of 8 -------------------------------------------------------------------------------- 1. Names of Reporting Persons: Diversified Utility and Energy Trust No. 2 (DUET2) -------------------------------------------------------------------------------- 2. Check the Appropriate Box if a Member of a Group (a) [ ] (b) [X] -------------------------------------------------------------------------------- 3. SEC USE Only -------------------------------------------------------------------------------- 4. Source of Funds: OO -------------------------------------------------------------------------------- 5. Check if Disclosure of Legal Proceedings is Required Pursuant to Items 2(d) or 2(e) [ ] -------------------------------------------------------------------------------- 6. Citizenship or Place of Organization: Victoria, Australia -------------------------------------------------------------------------------- 7. Sole Voting Power: Number of 0 shares Shares ----------------------------------------------------------------- Beneficially 8. Shared Voting Power: Owned by Each 6,818,827 shares Reporting ----------------------------------------------------------------- Person 9. Sole Dispositive Power: With 0 shares ----------------------------------------------------------------- 10.Shared Dispositive Power: 6,818,827 shares -------------------------------------------------------------------------------- 11. Aggregate Amount Beneficially Owned by Each Reporting Person 6,818,827 shares, Common Stock -------------------------------------------------------------------------------- 12. Check if the Aggregate Amount in Row (11) Excludes Certain Shares [X] -------------------------------------------------------------------------------- 13. Percent of Class Represented by Amount in Row (11) 7.7% of Common Stock(5) -------------------------------------------------------------------------------- 14. Type of Reporting Person: HC-OO(6) -------------------------------------------------------------------------------- ------------------- (5) Based on the Declared Shares Outstanding. (6) DUET2 is an investment fund organized as a trust, as described below in Item 2. Page 4 of 8 -------------------------------------------------------------------------------- 1. Names of Reporting Persons: AMPCI Macquarie Infrastructure Management No 1 Limited (RE1) -------------------------------------------------------------------------------- 2. Check the Appropriate Box if a Member of a Group (a) [ ] (b) [X] -------------------------------------------------------------------------------- 3. SEC USE Only -------------------------------------------------------------------------------- 4. Source of Funds: OO -------------------------------------------------------------------------------- 5. Check if Disclosure of Legal Proceedings is Required Pursuant to Items 2(d) or 2(e) [ ] -------------------------------------------------------------------------------- 6. Citizenship or Place of Organization: New South Wales, Australia -------------------------------------------------------------------------------- 7. Sole Voting Power: Number of 0 shares Shares ----------------------------------------------------------------- Beneficially 8. Shared Voting Power: Owned by Each 6,818,827 shares Reporting ----------------------------------------------------------------- Person 9. Sole Dispositive Power: With 0 shares ----------------------------------------------------------------- 10.Shared Dispositive Power: 6,818,827 shares -------------------------------------------------------------------------------- 11. Aggregate Amount Beneficially Owned by Each Reporting Person 6,818,827 shares, Common Stock -------------------------------------------------------------------------------- 12. Check if the Aggregate Amount in Row (11) Excludes Certain Shares [X] -------------------------------------------------------------------------------- 13. Percent of Class Represented by Amount in Row (11) 7.7% of Common Stock(7) -------------------------------------------------------------------------------- 14. Type of Reporting Person: HC-OO(8) -------------------------------------------------------------------------------- ------------------- (7) Based on the Declared Shares Outstanding. (8) RE1 is a limited liability company. Page 5 of 8 -------------------------------------------------------------------------------- 1. Names of Reporting Persons: AMPCI Macquarie Infrastructure Management No 2 Limited (RE2) -------------------------------------------------------------------------------- 2. Check the Appropriate Box if a Member of a Group (a) [ ] (b) [X] -------------------------------------------------------------------------------- 3. SEC USE Only -------------------------------------------------------------------------------- 4. Source of Funds: OO -------------------------------------------------------------------------------- 5. Check if Disclosure of Legal Proceedings is Required Pursuant to Items 2(d) or 2(e) [ ] -------------------------------------------------------------------------------- 6. Citizenship or Place of Organization: New South Wales, Australia -------------------------------------------------------------------------------- 7. Sole Voting Power: Number of 0 shares Shares ----------------------------------------------------------------- Beneficially 8. Shared Voting Power: Owned by Each 6,818,827 shares Reporting ----------------------------------------------------------------- Person 9. Sole Dispositive Power: With 0 shares ----------------------------------------------------------------- 10.Shared Dispositive Power: 6,818,827 shares -------------------------------------------------------------------------------- 11. Aggregate Amount Beneficially Owned by Each Reporting Person 6,818,827 shares, Common Stock -------------------------------------------------------------------------------- 12. Check if the Aggregate Amount in Row (11) Excludes Certain Shares [X] -------------------------------------------------------------------------------- 13. Percent of Class Represented by Amount in Row (11) 7.7% of Common Stock(9) -------------------------------------------------------------------------------- 14. Type of Reporting Person: HC-OO(10) -------------------------------------------------------------------------------- ------------------- (9) Based on the Declared Shares Outstanding. (10) RE2 is a limited liability company. Page 6 of 8 ITEM 1. SECURITY AND ISSUER. This Amendment No. 1 amends the Schedule 13D (the "Original Schedule 13D") originally filed on July 17, 2006, on behalf of DUET Investment Holdings Limited ("DIHL"), Diversified Utility and Energy Trust No. 1 ("DUET1"), Diversified Utility and Energy Trust No. 2 ("DUET2"), AMPCI Macquarie Infrastructure Management No 1 Limited ("RE1") and AMPCI Macquarie Infrastructure Management No 2 Limited ("RE2") (DIHL, DUET1, DUET2, RE1 and RE2, collectively, the "Reporting Persons") , relating to the Common Stock, no par value, of Duquesne Light Holdings, Inc., a Pennsylvania corporation ("Duquesne"). The principal executive offices of Duquesne are located at 411 Seventh Avenue, Pittsburgh, PA 15219. Unless otherwise indicated, all capitalized terms used herein but not defined herein shall have the same meanings as set forth in the Original Schedule 13D. ITEM 4. PURPOSE OF TRANSACTIONS. This Item 4 is hereby amended and supplemented as follows: On August 11, 2006, the Acquisition was consummated by the parties to the Stock Purchase Agreement. Because both Condition I and Condition II to the Duquesne Purchases were satisfied, Duquesne issued an aggregate of 8,836,232 shares of the Common Stock in the Acquisition; pursuant to the Stock Purchase Agreement, DIHL paid an aggregate purchase price of $109,101,232.00 for 6,818,827 of the Purchased Shares and Industry Funds Management (Nominees) Limited, as trustee of the IFM (International Infrastructure) Wholesale Trust paid an aggregate purchase price of $32,278,480.00 for 2,017,405 of the Purchased Shares. Page 7 of 8 SIGNATURES After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. Dated: August 14, 2006 DUET Investment Holdings Limited By: /s/ Bruce K. Berry ------------------------------------------------------ Name: Bruce K. Berry Title: Chief Financial Officer Diversified Utility and Energy Trust No. 1 By: /s/ Bruce K. Berry ------------------------------------------------------ Name: Bruce K. Berry Title: Chief Financial Officer Diversified Utility and Energy Trust No. 2 By: /s/ Bruce K. Berry ------------------------------------------------------ Name: Bruce K. Berry Title: Chief Financial Officer AMPCI Macquarie Infrastructure Management No 1 Limited (RE1) By: /s/ Bruce K. Berry ----------------------------------------------------- Name: Bruce K. Berry Title: Chief Financial Officer AMPCI Macquarie Infrastructure Management No 2 Limited (RE2) By: /s/ Bruce K. Berry ------------------------------------------------------ Name: Bruce K. Berry Title: Chief Financial Officer Page 8 of 8