X0202 4 2006-06-30 0000004281 ALCOA INC AA 0001268015 REITAN BERNT 201 ISABELLA STREET PITTSBURGH PA 15212 0 1 0 0 Executive Vice President Phantom Stock Units 2006-06-30 4 A 0 85 32.26 A Common Stock 85 2337 D Phantom Stock Units Common Stock 32959 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. The reporting person may transfer the phantom stock into an alternative investment account under the Plan at times permitted under the Plan. Includes 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 and are now owned directly under, and are subject to the provisions of, the Alcoa Deferred Compensation Plan. As of 06/30/2006, the reporting person held 32,959 phantom stock units under the ASAP, 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 2006-07-05