AFFILIATED MANAGERS GROUP, INC. — Director's Dealing 2012

Sep 11, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: AFFILIATED MANAGERS GROUP INC (AMG)
CIK: 0001004434
Period of Report: 2012-09-07

Reporting Person: RODRIGUEZ RITA M (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-09-07	Common Stock	M	5625	$45.27	Acquired	13765	Direct
2012-09-07	Common Stock	M	5625	$63.38	Acquired	13765	Direct
2012-09-07	Common Stock	S	11250	$121.02	Disposed	13765	Direct
2012-09-07	Common Stock	M	4218	$48.38	Acquired	13765	Direct
2012-09-07	Common Stock	M	2694	$62.04	Acquired	13765	Direct
2012-09-07	Common Stock	M	1705	$65.51	Acquired	13765	Direct
2012-09-07	Common Stock	M	1638	$62.91	Acquired	13765	Direct
2012-09-07	Common Stock	M	2200	$71.75	Acquired	13765	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-09-07	Director Stock Option (Right to Buy)	$45.27	M	5625	Disposed	2014-07-27	Common Stock (5625)	Direct
2012-09-07	Director Stock Option (Right to Buy)	$63.38	M	5625	Disposed	2014-11-30	Common Stock (5625)	Direct
2012-09-07	Director Stock Option (Right to Buy)	$48.38	M	4218	Disposed	2015-11-03	Common Stock (4218)	Direct
2012-09-07	Director Stock Option (Right to Buy)	$62.04	M	2694	Disposed	2016-07-21	Common Stock (2694)	Direct
2012-09-07	Director Stock Option (Right to Buy)	$65.51	M	1705	Disposed	2019-12-02	Common Stock (1705)	Direct
2012-09-07	Director Stock Option (Right to Buy)	$62.91	M	1638	Disposed	2017-07-20	Common Stock (1638)	Direct
2012-09-07	Director Stock Option (Right to Buy)	$71.75	M	2200	Disposed	2015-07-26	Common Stock (2200)	Direct

Footnotes

F1: The sale reflects the weighted average sales price of the shares sold; the individual transaction prices ranged from $121.00 to $121.05. Specific transaction details will be provided to the SEC upon request.