3M CO — Director's Dealing 2004

Oct 25, 2004

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: 3M CO (MMM)
CIK: 0000066740
Period of Report: 2004-10-21

Reporting Person: SAUER BRAD T (EXEC VP HEALTH CARE)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2004-10-21	Common Stock	M	1781	$43.35	Acquired	11916	Direct
2004-10-21	Common Stock	F	1000	$77.165	Disposed	10916	Direct
2004-10-21	Common Stock	M	1744	$43.35	Acquired	12660	Direct
2004-10-21	Common Stock	F	979	$77.165	Disposed	11681	Direct
2004-10-21	Common Stock	F	249	$77.165	Disposed	11432	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2004-10-21	Incentive Stock Option (right to buy)	$43.35	M	1781	Disposed	2010-05-09	Common Stock (1781)	Direct
2004-10-21	Non-Qualified Stock Option (right to buy)	$43.35	M	1744	Disposed	2010-05-09	Common Stock (1744)	Direct
2004-10-21	Non-Qualified Stock Option (right to buy)	$77.2	A	1228	Acquired	2010-05-07	Common Stock (1228)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	664	Indirect