3M CO — Director's Dealing 2009

Apr 30, 2009

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: 3M CO (MMM)
CIK: 0000066740
Period of Report: 2009-04-29

Reporting Person: Shin Hak Cheol (EXEC VP INDUSTRIAL)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2009-04-29	Common Stock	M	1760	$47.50	Acquired	56754	Direct
2009-04-29	Common Stock	F	1453	$57.52	Disposed	55301	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2009-04-29	Incentive Stock Option (Right to Buy)	$47.50	M	1760	Disposed	2009-05-11	Common Stock (1760)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	1217	Indirect

Footnotes

F1: Includes shares acquired under 3M's General Employee Stock Purchase Plan; includes shares acquired under 3M's Dividend Reinvestment Plan.

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