3M CO — Director's Dealing 2010

Nov 9, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: 3M CO (MMM)
CIK: 0000066740
Period of Report: 2010-11-08

Reporting Person: MacDonald Robert D III (VICE PRESIDENT MARKETING)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-11-08	Common Stock	M	1704	$58.625	Acquired	35609	Direct
2010-11-08	Common Stock	F	1163	$85.86	Disposed	34446	Direct
2010-11-08	Common Stock	M	8102	$80.50	Acquired	42548	Direct
2010-11-08	Common Stock	F	7596	$85.86	Disposed	34952	Direct
2010-11-08	Common Stock	F	215	$85.86	Disposed	34737	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-11-08	Incentive Stock Option (Right to Buy)	$58.625	M	1704	Disposed	2011-05-08	Common Stock (1704)	Direct
2010-11-08	Non-qualified Stock Option (Right to Buy)	$80.50	M	8102	Disposed	2011-05-06	Common Stock (8102)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	2619	Indirect

Footnotes

F1: Includes shares acquired during the fiscal year pursuant to the 3M Voluntary Investment Plan.