X0202 4 2006-12-19 1 0000202890 Aleris International, Inc. ARS 0001014894 Brahman Capital Corp. 655 THIRD AVENUE 11TH FLOOR NEW YORK NY 10017 0 0 0 1 Former 10% Owner Common Stock, pare value $.10 per share 2006-12-19 4 U 0 3585600 52.5 D 0 I See footnotes Brahman Capital Corp. serves as investment manager to a number of investment funds (including Brahman Partners II, L.P., Brahman Partners III, L.P., Brahman Institutional Partners, L.P., BY Partners, L.P., Brahman C.P.F. Partners, L.P., Brahman Partners II Offshore, Ltd., Brahman Partners IV, L.P. and Brahman Partners IV Offshore, Ltd.) and manages investments for certain entities in managed accounts with respect to which it has voting and dispositive authority over the Common Stock reported in this Form 4. Peter A. Hochfelder, Mitchell A. Kuflik and Robert J. Sobel are executive officers and directors of Brahman Capital Corp. and have the ability to control the decisions of Brahman Capital Corp. with respect to the assets of such investment funds and managed accounts. Brahman Management, L.L.C. is the general partner of certain of the investment funds for which Brahman Capital Corp. serves as investment manager (including Brahman Partners II, L.P., Brahman Partners III, L.P., Brahman Institutional Partners, L.P., BY Partners, L.P., Brahman C.P.F. Partners, L.P. and Brahman Partners IV, L.P.). Peter A. Hochfelder, Mitchell A. Kuflik and Robert J. Sobel are the managing members of Brahman Management, L.L.C. and have the ability to control the decisions of Brahman Management, L.L.C. with respect to the assets of such investment funds. /s/ Brahman Capital Corp. 2006-12-29 /s/ Brahman Management, L.L.C. 2006-12-29 /s/ Peter A. Hochfelder 2006-12-29 /s/ Robert J. Sobel 2006-12-29 /s/ Mitchell A. Kuflik 2006-12-29