Shareowner Information Shareowner Services Annual Meeting Company News Investor Information Stock Listing Other Publications Dividends Quarterly Common Stock Information Common Share Data Dividend Reinvestment Corporate Center Direct Deposit of Dividends The annual meeting of shareowners will be at 9:30 a.m. Friday, April 22, 2005 at the Westin Convention Center Hotel Pittsburgh. Visit www.alcoa.com for Securities and Exchange Commission (SEC) filings, quarterly earnings reports, and other company news. Copies of the annual report and Forms 10-K and 10-Q may be requested at no cost at www.alcoa.com or by writing to Corporate Communications at the corporate center address. Security analysts and investors may write to Director – Investor Relations at 390 Park Avenue, New York, NY 10022-4608, call 1 212 836 2674, or email investor.relations@alcoa.com. For more information on Alcoa Foundation and Alcoa commu- nity investments, visit www.alcoa.com under ‘‘community.’’ For Alcoa’s 2004 Sustainability Report, visit www.alcoa.com or write Director – Sustainable Development, 390 Park Avenue, New York, NY 10022-4608 or email sustainability@alcoa.com. Alcoa’s objective is to pay common stock dividends at rates competitive with other investments of equal risk and consistent with the need to reinvest earnings for long-term growth. To support this objective, Alcoa pays a quarterly dividend of 15 cents per common share and 93.75 cents per preferred share. Quarterly dividends are paid to shareowners of record at each quarterly distribution date. The company offers a Dividend Reinvestment and Stock Purchase Plan for shareowners of Alcoa common and preferred stock. The plan allows shareowners to reinvest all or part of their quarterly dividends in shares of Alcoa common stock. Shareowners also may purchase additional shares under the plan with cash contributions. The company pays brokerage commissions and fees on these stock purchases. Shareowners may have their quarterly dividends deposited directly to their checking, savings, or money market accounts at any financial institution that participates in the Automated Clearing House (ACH) system. Shareowners with questions on account balances, dividend checks, reinvestment, or direct deposit; address changes; lost or misplaced stock certificates; or other shareowner account matters may contact Alcoa’s stock transfer agent, registrar, and dividend disbursing agent: Equiserve Trust Company, N.A. P. O. B o x 43069 Providence, RI 02940-3069 Telephone Response Center: 1 800 317 4445 Outside U.S. and Canada: 17815752724 Internet: www.equiserve.com Telecommunications Device for the Deaf (TDD): 1 800 952 9245 For shareowner questions on other matters related to Alcoa, write to Donna C. Dabney, Office of the Secretary, 390 Park Avenue, New York, NY 10022-4608 or call 1 412 553 4707. Common: New York Stock Exchange and exchanges in Australia, Belgium, Germany, Switzerland, and the United Kingdom Preferred: American Stock Exchange Ticker symbol: AA * These estimates include shareowners who own stock registered in their own names and those who own stock through banks and brokers. Alcoa 201 Isabella St. at 7th St. Bridge Pittsburgh, PA 15212-5858 Te l e p h o n e : 1 412 553 4545 Fax: 1 412 553 4498 Internet: www.alcoa.com Alcoa Inc. is incorporated in the Commonwealth of Pennsylvania. Quarter 2004 High Low Dividend 2003 High Low Dividend First $39.44 $32.60 $.15 $24.75 $18.45 $.15 Second 36.60 28.51 .15 27.22 18.86 .15 Third 33.70 29.44 .15 29.50 24.00 .15 Fourth 34.99 30.63 .15 38.92 26.27 .15 Year $39.44 $28.51 $.60 $38.92 $18.45 $.60 Estimated number of shareowners* Average shares outstanding (000) 2004 295,000 869,907 2003 278,400 853,352 2002 273,000 845,439 2001 266,800 857,990 2000 265,300 814,229 68