3M CO — Director's Dealing 2004

Aug 6, 2004

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: 3M CO (MMM)
CIK: 0000066740
Period of Report: 2004-08-05

Reporting Person: MCNERNEY W JAMES JR (Director, CHAIRMAN OF THE BOARD & CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2004-08-05	Common Stock	M	81999	$51.525	Acquired	302954	Direct
2004-08-05	Common Stock	F	51165	$82.575	Disposed	251789	Direct
2004-08-05	Common Stock	F	10082	$82.575	Disposed	241707	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2004-08-05	Non-Qualified Stock Option (right to buy)	$51.525	M	81999	Disposed	2010-12-04	Common Stock (81999)	Direct
2004-08-05	Non-Qualified Stock Option (right to buy)	$82.6	A	61247	Acquired	2010-05-07	Common Stock (61247)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	433	Indirect