AFFILIATED MANAGERS GROUP, INC. — Director's Dealing 2010

Mar 15, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: AFFILIATED MANAGERS GROUP INC (AMG)
CIK: 0001004434
Period of Report: 2010-03-11

Reporting Person: RODRIGUEZ RITA M (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-03-11	Common Stock	M	5625	$43.50	Acquired	0	Direct
2010-03-11	Common Stock	S	5625	$76.43	Disposed	0	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-03-11	Director Stock Option (Right to Buy)	$43.50	M	5625	Disposed	2010-07-24	Common Stock (5625)	Direct

Footnotes

F1: The reported amount is the weighted average sales price; the individual transaction prices ranged from $76.15 to $76.55. Specific transaction details will be provided to the SEC upon request.