UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM N-Q QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED MANAGEMENT INVESTMENT COMPANIES Investment Company Act file number 811-5615 John Hancock Patriot Premium Dividend Fund I (Exact name of registrant as specified in charter) 101 Huntington Avenue, Boston, Massachusetts 02199 (Address of principal executive offices) (Zip code) Susan S. Newton, Secretary 101 Huntington Avenue Boston, Massachusetts 02199 (Name and address of agent for service) Registrant's telephone number, including area code: 617-375-1702 Date of fiscal year end: September 30 Date of reporting period: December 31, 2004 ITEM 1. SCHEDULE OF INVESTMENTS JOHN HANCOCK Patriot Premium Dividend Fund I 12.31.2004 Quarterly Portfolio Holdings [A 2" x 1" John Hancock (Signature)/John Hancock Funds logo in lower, center middle of page. A tag line below reads "JOHN HANCOCK FUNDS."] John Hancock Patriot Premium Dividend Fund I Securities owned by the Fund on December 31, 2004 (unaudited) Issuer Shares Value --------------------------------------------------------------------------------------------------------------------------------- Common stocks 33.05% $71,862,695 (Cost $68,476,860) Electric Utilities 22.08% 48,017,456 Alliant Energy Corp. 150,380 4,300,868 Ameren Corp. 45,900 2,301,426 CH Energy Group, Inc. 141,350 6,791,868 Consolidated Edison, Inc. 32,000 1,400,000 DTE Energy Co. 126,000 5,434,380 Great Plains Energy, Inc. 10,000 302,800 NSTAR 175,000 9,499,000 Progress Energy, Inc. 52,500 2,375,100 Progress Energy, Inc., (Contingent Value Obligation) (B)(I) 69,000 8,280 Puget Energy, Inc. 216,900 5,357,430 Sierra Pacific Resources (I) 246,600 2,589,300 TECO Energy, Inc. 173,000 2,653,820 WPS Resources Corp. 40,400 2,018,384 Xcel Energy, Inc. 164,000 2,984,800 Gas Utilities 4.04% 8,790,755 KeySpan Corp. 136,450 5,382,952 NiSource, Inc. 67,600 1,539,928 Peoples Energy Corp. 42,500 1,867,875 Integrated Telecommunication Services 0.00% 91 Touch America Holdings, Inc. (I) 151,000 91 Multi-Utilities & Unregulated Power 6.93% 15,054,393 Aquila, Inc. (I) 180,000 664,200 Dominion Resources, Inc. 64,300 4,355,682 Duke Energy Corp. 40,000 1,013,200 Energy East Corp. 257,000 6,856,760 National Fuel Gas Co. 47,150 1,336,231 Public Service Enterprise Group, Inc. 16,000 828,320 Credit Issuer, description rating (A) Shares Value --------------------------------------------------------------------------------------------------------------------------------- Preferred stocks 63.38% $137,819,185 (Cost $136,078,313) Agricultural Products 1.31% 2,848,125 Ocean Spray Cranberries, Inc., 6.25%, Ser A (S) BB+ 35,000 2,848,125 Broadcasting & Cable TV 4.22% 9,180,875 Shaw Communications, Inc., 8.45%, Ser A (Canada) B+ 177,500 4,481,875 Shaw Communications, Inc., 8.50% (Canada) B+ 185,000 4,699,000 Consumer Finance 0.32% 690,000 SLM Corp., 6.97%, Ser A BBB+ 12,000 690,000 Diversified Banks 1.13% 2,455,902 Royal Bank of Scotland Group Plc, 5.75%, Ser L (United Kingdom) A 100,200 2,455,902 Electric Utilities 18.48% 40,197,384 Alabama Power Co., 5.20% BBB+ 225,000 5,456,250 Boston Edison Co., 4.25% BBB+ 57,879 4,659,259 Boston Edison Co., 4.78% BBB+ 24,668 2,232,454 Duquesne Light Co., 6.50% BB+ 20,000 1,050,000 FPC Capital I, 7.10%, Ser A BB+ 54,500 1,379,940 Georgia Power Co., 6.00%, Ser R A 213,800 5,409,140 Great Plains Energy, Inc., 4.35% BB+ 23,638 1,843,764 Great Plains Energy, Inc., 4.50% BB+ 12,510 1,003,927 HECO Capital Trust III, 6.50% BBB- 45,000 1,179,000 Monongahela Power Co., $7.73, Ser L B- 34,500 3,415,500 PPL Electric Utilities Corp., 4.60% BBB 3,670 291,192 PSI Energy, Inc., 6.875% BBB- 37,000 3,875,750 Public Service Electric & Gas Co., 4.30%, Ser C BB+ 6,560 503,480 Sierra Pacific Power Co., 7.80%, Ser 1 (Class A) CCC+ 210,000 5,334,000 Virginia Electric & Power Co., $7.05 BBB 10,200 1,062,075 Xcel Energy, Inc., $4.11, Ser D BB+ 19,850 1,501,653 Gas Utilities 5.10% 11,086,555 El Paso Tennessee Pipeline Co., 8.25%, Ser A CCC- 156,400 7,961,745 Southern Union Co., 7.55% BB+ 111,800 3,124,810 Integrated Oil & Gas 2.48% 5,383,600 Coastal Finance I, 8.375% CCC- 215,000 5,383,600 Integrated Telecommunication Services 0.02% 50,850 Touch America Holdings, Inc., $6.875 (I) N/R 50,850 50,850 Investment Banking & Brokerage 8.10% 17,623,162 Bear Stearns Cos., Inc. (The), 5.72%, Depositary Shares, Ser F BBB 102,460 5,310,502 Lehman Brothers Holdings, Inc., 5.94%, Depositary Shares, Ser C BBB+ 90,400 4,623,960 Lehman Brothers Holdings, Inc., 5.67%, Depositary Shares, Ser D BBB+ 102,700 5,237,700 Morgan Stanley Capital Trust V, 5.75% A1 100,000 2,451,000 Multi-Utilities & Unregulated Power 11.45% 24,892,025 Baltimore Gas & Electric Co., 6.99%, Ser 1995 Baa1 34,000 3,557,250 BGE Capital Trust II, 6.20% BBB- 190,000 4,862,100 Energy East Capital Trust I, 8.25% BBB- 200,000 5,366,000 PSEG Funding Trust II, 8.75% BB+ 70,000 1,946,000 Public Service Electric & Gas Co., 6.92% BB+ 26,800 2,782,175 South Carolina Electric & Gas Co., 6.52% Baa1 55,000 5,720,000 TECO Capital Trust I, 8.50% B 25,000 658,500 Oil & Gas Exploration & Production 7.93% 17,246,607 Anadarko Petroleum Corp., 5.46%, Depositary Shares, Ser B BBB- 45,278 4,507,991 Apache Corp., 5.68%, Depositary Shares, Ser B BBB 25,000 2,619,532 Devon Energy Corp., 6.49%, Ser A BB+ 50,000 5,182,815 Nexen, Inc., 7.35% (Canada) BB+ 183,300 4,936,269 Other Diversified Financial Services 1.75% 3,801,600 J.P. Morgan Chase & Co., 6.625%, Depositary Shares, Ser H A- 72,000 3,801,600 Regional Banks 1.09% 2,362,500 HSBC USA, Inc., $2.8575 A2 45,000 2,362,500 Interest Par value Issuer, description, maturity date rate (%) ($000) Value --------------------------------------------------------------------------------------------------------------------------------- Short-term investments 3.57% $7,768,180 (Cost $7,768,180) Commercial Paper 3.57% 7,768,180 ChevronTexaco Corp., 01-03-05 1.900 7,769 7,768,180 Total investments 100.00% $217,450,060 John Hancock Patriot Premium Dividend Fund I Footnotes to Schedule of Investments December 31, 2004 (unaudited) (A) Credit ratings are unaudited and are rated by Moody's Investors Service where Standard & Poor's ratings are not available. (B) This security is fair valued in good faith under procedures established by the Board of Trustees. (I) Non-income-producing security. (S) This security is exempt from registration under rule 144A of the Securities Act of 1933. Such security may be resold, normally to qualified institutional buyers, in transactions exempt from registration. Rule 144A securities amounted to $2,848,125 or 1.31% of the Fund's total investments as of December 31, 2004. Parenthetical disclosure of a foreign country in the security description represents country of a foreign issuer. The percentage shown for each investment category is the total value of that category as a percentage of the total investments of the Fund. The cost of investments owned on December 31, 2004, including short-term investments, was $212,323,353. Gross unrealized appreciation and depreciation of investments aggregated $21,239,688 and $16,112,980, respectively, resulting in net unrealized appreciation of $5,126,708. For more information Trustees Charles L. Ladner, Chairman* James F. Carlin William H. Cunningham Ronald R. Dion Dr. John A. Moore* Patti McGill Peterson* Steven R. Pruchansky James A. Shepherdson Lt. Gen. Norman H. Smith, USMC (Ret.) *Members of the Audit Committee Officers James A. Shepherdson President and Chief Executive Officer Susan S. Newton Senior Vice President and Secretary William H. King Vice President and Treasurer Investment Adviser John Hancock Advisers, LLC 101 Huntington Avenue Boston, Massachusetts 02199-7603 Custodian The Bank of New York One Wall Street New York, New York 10286 Transfer Agent and Dividend Disburser Mellon Investor Services 85 Challenger Road Overpeck Centre Ridgefield Park, New Jersey 07660 Transfer Agent for DARTS Deutsche Bank Trust Company Americas 280 Park Avenue New York, New York 10017 Legal Counsel Wilmer Cutler Pickering Hale and Dorr LLP 60 State Street Boston, Massachusetts 02109-1803 Stock Symbol Listed New York Stock Exchange: PDF How to contact us Internet www.jhfunds.com Mail Regular mail: Mellon Investor Services 85 Challenger Road Overpeck Centre Ridgefield Park, NJ 07660 Phone Customer service representatives 1-800-852-0218 Portfolio commentary 1-800-344-7054 24-hour automated information 1-800-843-0090 TDD line 1-800-231-5469 This report is for the information of the shareholders of John Hancock Patriot Premium Dividend Fund I. P10Q1 12/04 2/05 ITEM 2. CONTROLS AND PROCEDURES. (a) Based upon their evaluation of the registrant's disclosure controls and procedures as conducted within 90 days of the filing date of this Form N-Q, the registrant's principal executive officer and principal accounting officer have concluded that those disclosure controls and procedures provide reasonable assurance that the material information required to be disclosed by the registrant on this report is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission's rules and forms. (c) There were no changes in the registrant's internal control over financial reporting that occurred during the registrant's last fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting. ITEM 3. EXHIBITS. Separate certifications for the registrant's principal executive officer and principal accounting officer, as required by Rule 30a-2(a) under the Investment Company Act of 1940, are attached. SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. John Hancock Patriot Premium Dividend Fund I By: ------------------------------ James A. Shepherdson President and Chief Executive Officer Date: February 17, 2005 Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated. By: ------------------------------ James A. Shepherdson President and Chief Executive Officer Date: February 17, 2005 By: ------------------------------ William H. King Vice President and Treasurer Date: February 17, 2005