3M CO — Director's Dealing 2005

Feb 17, 2005

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: 3M CO (MMM)
CIK: 0000066740
Period of Report: 2005-02-16

Reporting Person: MAHAN JAMES T (VICE PRESIDENT ENGRG MFG & LOG)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2005-02-16	Common Stock	M	940	$62.65	Acquired	19144	Direct
2005-02-16	Common Stock	F	683	$86.175	Disposed	18461	Direct
2005-02-16	Common Stock	F	83	$86.175	Disposed	18378	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2005-02-16	Non-Qualified Stock Option (right to buy)	$62.65	M	940	Disposed	2005-05-06	Common Stock (940)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	3446	Indirect