3M CO — Director's Dealing 2005

Dec 13, 2005

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: 3M CO (MMM)
CIK: 0000066740
Period of Report: 2005-12-12

Reporting Person: Shin Hak Cheol (EXEC VP INDUSTRIAL)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2005-12-12	Common Stock	M	914	$31.5175	Acquired	7640	Direct
2005-12-12	Common Stock	F	371	$77.47	Disposed	7269	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2005-12-12	Incentive Stock Option (right to buy)	$31.5175	M	914	Disposed	2006-05-14	Common Stock (914)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	693	Indirect