3M CO — Director's Dealing 2004

May 6, 2004

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: 3M CO (MMM)
CIK: 0000066740
Period of Report: 2004-05-04

Reporting Person: NOZARI M S (EXEC VP CONSUMER & OFFICE)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2004-05-04	Common Stock	M	2142	$46.675	Acquired	50068	Direct
2004-05-04	Common Stock	F	1154	$86.635	Disposed	48914	Direct
2004-05-04	Common Stock	M	15716	$46.675	Acquired	64630	Direct
2004-05-04	Common Stock	F	8467	$86.635	Disposed	56163	Direct
2004-05-04	Common Stock	F	2370	$86.635	Disposed	53793	Direct
2004-05-04	Common Stock	M	27896	$47.5	Acquired	81689	Direct
2004-05-04	Common Stock	F	15294	$86.635	Disposed	66395	Direct
2004-05-04	Common Stock	F	4120	$86.635	Disposed	62275	Direct
2004-05-04	Common Stock	M	27694	$43.35	Acquired	89969	Direct
2004-05-04	Common Stock	F	13857	$86.635	Disposed	76112	Direct
2004-05-04	Common Stock	F	4524	$86.635	Disposed	71588	Direct
2004-05-04	Common Stock	M	6748	$57.075	Acquired	78336	Direct
2004-05-04	Common Stock	F	4445	$86.635	Disposed	73891	Direct
2004-05-04	Common Stock	F	752	$86.635	Disposed	73139	Direct
2004-05-04	Common Stock	M	2547	$57.075	Acquired	75686	Direct
2004-05-04	Common Stock	F	1677	$86.635	Disposed	74009	Direct
2004-05-04	Common Stock	F	284	$86.635	Disposed	73725	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2004-05-04	Incentive Stock Option (right to buy)	$46.675	M	2142	Disposed	2008-05-12	Common Stock (2142)	Direct
2004-05-04	Non-Qualified Stock Option (right to buy)	$43.35	M	27694	Disposed	2010-05-09	Common Stock (27694)	Direct
2004-05-04	Non-Qualified Stock Option (right to buy)	$46.675	M	15716	Disposed	2008-05-12	Common Stock (15716)	Direct
2004-05-04	Non-Qualified Stock Option (right to buy)	$47.5	M	27896	Disposed	2009-05-10	Common Stock (27896)	Direct
2004-05-04	Non-Qualified Stock Option (right to buy)	$57.075	M	6748	Disposed	2004-05-07	Common Stock (6748)	Direct
2004-05-04	Non-Qualified Stock Option (right to buy)	$57.075	M	2547	Disposed	2005-05-06	Common Stock (2547)	Direct
2004-05-04	Non-Qualified Stock Option (right to buy)	$86.65	A	1961	Acquired	2005-05-06	Common Stock (1961)	Direct
2004-05-04	Non-Qualified Stock Option (right to buy)	$86.65	A	10837	Acquired	2008-05-12	Common Stock (10837)	Direct
2004-05-04	Non-Qualified Stock Option (right to buy)	$86.65	A	19414	Acquired	2009-05-10	Common Stock (19414)	Direct
2004-05-04	Non-Qualified Stock Option (right to buy)	$86.65	A	18381	Acquired	2010-05-07	Common Stock (18381)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	3935	Indirect