3M CO — Director's Dealing 2006

Oct 31, 2006

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: 3M CO (MMM)
CIK: 0000066740
Period of Report: 2006-10-27

Reporting Person: MacDonald Robert D III (VICE PRESIDENT MARKETING)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2006-10-27	Common Stock	M	6958	$61.9	Acquired	26896	Direct
2006-10-27	Common Stock	F	5430	$79.305	Disposed	21466	Direct
2006-10-27	Common Stock	F	499	$79.305	Disposed	20967	Direct
2006-10-27	Common Stock	M	2180	$45.85	Acquired	23147	Direct
2006-10-27	Common Stock	F	1260	$79.305	Disposed	21887	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2006-10-27	Incentive Stock Option (right to buy)	$45.85	M	2180	Disposed	2007-05-13	Common Stock (2180)	Direct
2006-10-27	Non-Qualified Stock Option (right to buy)	$61.9	M	6958	Disposed	2007-05-11	Common Stock (6958)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	2001	Indirect
Common Stock	9614	Indirect

Footnotes

F1: The indirectly-held common stock holding (401k/PAESOP) reported in Table I includes shares acquired during the fiscal year pursuant to the 3M Voluntary Investment Plan.

F2: The directly-held common stock holding reported in Table I includes shares acquired during the fiscal year pursuant to 3M's General Employee Stock Purchase Plan.