3M CO — Director's Dealing 2004

May 13, 2004

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: 3M CO (MMM)
CIK: 0000066740
Period of Report: 2004-05-11

Reporting Person: GRENZ M KAY (VICE PRESIDENT HR)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2004-05-11	Non-Qualified Stock Option (right to buy)	$84.4	A	40810	Acquired	2014-05-09	Common Stock (40810)	Direct