3M CO — Director's Dealing 2009

Apr 6, 2009

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: 3M CO (MMM)
CIK: 0000066740
Period of Report: 2009-04-02

Reporting Person: Woodworth John K (VICE PRESIDENT CORP SC OPERTNS)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2009-04-02	Common Stock	M	2104	$47.50	Acquired	23850	Direct
2009-04-02	Common Stock	F	1917	$52.13	Disposed	21933	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2009-04-02	Incentive Stock Option (Right to Buy)	$47.50	M	2104	Disposed	2009-05-10	Common Stock (2104)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	2534	Indirect

Footnotes

F1: Includes shares acquired under 3M's Dividend Reinvestment Plan.

F2: Includes shares acquired during the fiscal year pursuant to the 3M Voluntary Investment Plan.