X0202 4 2005-05-18 0 0001004434 AFFILIATED MANAGERS GROUP INC AMG 0001180620 LOCKWOOD STEPHEN J C/O AFFILIATED MANAGERS GROUP, INC. 600 HALE STREET PRIDES CROSSING MA 01965 1 0 0 0 Common Stock 2005-05-18 4 M 0 15000 16.9583 A 7500 D Common Stock 2005-05-18 4 M 0 7500 23.7917 A 7500 D Common Stock 2005-05-18 4 M 0 11250 41.3333 A 7500 D Common Stock 2005-05-18 4 M 0 9140 45.6667 A 7500 D Common Stock 2005-05-18 4 M 0 2812 33.9667 A 7500 D Common Stock 2005-05-18 4 M 0 2812 43.5000 A 7500 D Common Stock 2005-05-18 4 M 0 1406 44.3467 A 7500 D Common Stock 2005-05-18 4 M 0 1406 45.2700 A 7500 D Common Stock 2005-05-18 4 S 0 51326 64.4016 D 7500 D Director Stock Option (Right to Buy) 16.9583 2005-05-18 4 M 0 15000 16.9583 D 2004-10-01 2009-09-16 Common Stock 15000 0 D Director Stock Option (Right to Buy) 23.7917 2005-05-18 4 M 0 7500 23.7917 D 2004-01-01 2010-01-25 Common Stock 7500 0 D Director Stock Option (Right to Buy) 41.3333 2005-05-18 4 M 0 11250 41.3333 D 2005-01-01 2011-01-24 Common Stock 11250 0 D Director Stock Option (Right to Buy) 45.6667 2005-05-18 4 M 0 9140 45.6667 D 2005-01-01 2009-02-04 Common Stock 9140 2110 D Director Stock Option (Right to Buy) 33.9667 2005-05-18 4 M 0 2812 33.9667 D 2004-12-31 2009-12-10 Common Stock 2812 2813 D Director Stock Option (Right to Buy) 43.5000 2005-05-18 4 M 0 2812 43.5000 D 2004-12-31 2010-07-24 Common Stock 2812 2813 D Director Stock Option (Right to Buy) 44.3467 2005-05-18 4 M 0 1406 44.3467 D 2004-12-31 2010-12-10 Common Stock 1406 4219 D Director Stock Option (Right to Buy) 45.2700 2005-05-18 4 M 0 1406 45.2700 D 2004-12-31 2014-07-27 Common Stock 1406 4219 D /s/ John Kingston, III, Attorney-in-Fact 2005-05-20