X0202 4 2005-03-04 0000004281 ALCOA INC AA 0001308784 Mack Ruth Jeannette 201 ISABELLA STREET PITTSBURGH PA 15212 0 1 0 0 Vice President Phantom Stock Units 2005-03-04 4 A 0 140 31.645 A Common Stock 140 23176 D Phantom Stock Units Common Stock 7580 D 1 For 1 Phantom stock units were acquired under the Alcoa Deferred Compensation Plan and are to be paid out in cash after termination of employment. Includes 4,119 phantom stock units previously reported as owned directly under the Alcoa Stock Acquisition Plan (ASAP) which have vested in accordance with the provisions of the ASAP since the reporting person's last report and are now owned directly under, and are subject to the provisions of, the Alcoa Deferred Compensation Plan. As of the date of this report, the reporting person held a total of 7,580 phantom stock units under the Alcoa Stock Acquisition Plan, which vest three years after the applicable award date. Vested units become subject to the provisions of the Alcoa Deferred Compensation Plan. Brenda Hart (Assistant Secretary), by power of attorney 2005-03-07