3M CO — Director's Dealing 2006

May 9, 2006

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: 3M CO (MMM)
CIK: 0000066740
Period of Report: 2006-05-05

Reporting Person: YEOMANS JAN L (VICE PRESIDENT AND TREASURER)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2006-05-05	Common Stock	M	3172	$31.5175	Acquired	60513	Direct
2006-05-05	Common Stock	F	1150	$86.92	Disposed	59363	Direct
2006-05-05	Common Stock	M	8828	$62.85	Acquired	68191	Direct
2006-05-05	Common Stock	F	6383	$86.92	Disposed	61808	Direct
2006-05-05	Common Stock	F	799	$86.92	Disposed	61009	Direct
2006-05-05	Common Stock	M	1153	$59.575	Acquired	62162	Direct
2006-05-05	Common Stock	F	790	$86.92	Disposed	61372	Direct
2006-05-05	Common Stock	F	118	$86.92	Disposed	61254	Direct
2006-05-05	Common Stock	M	3968	$59.575	Acquired	65222	Direct
2006-05-05	Common Stock	F	2719	$86.92	Disposed	62503	Direct
2006-05-05	Common Stock	F	408	$86.92	Disposed	62095	Direct
2006-05-05	Common Stock	M	28000	$61.85	Acquired	90095	Direct
2006-05-05	Common Stock	F	19924	$86.92	Disposed	70171	Direct
2006-05-05	Common Stock	F	3008	$86.92	Disposed	67163	Direct
2006-05-05	Common Stock	M	9962	$62.85	Acquired	77125	Direct
2006-05-05	Common Stock	F	7203	$86.92	Disposed	69922	Direct
2006-05-05	Common Stock	F	902	$86.92	Disposed	69020	Direct
2006-05-05	Common Stock	M	15000	$62.85	Acquired	84020	Direct
2006-05-05	Common Stock	F	10846	$86.92	Disposed	73174	Direct
2006-05-05	Common Stock	F	1358	$86.92	Disposed	71816	Direct
2006-05-05	Common Stock	M	3622	$64.5	Acquired	75438	Direct
2006-05-05	Common Stock	F	2687	$86.92	Disposed	72751	Direct
2006-05-05	Common Stock	F	305	$86.92	Disposed	72446	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2006-05-05	Incentive Stock Option (right to buy)	$31.5175	M	3172	Disposed	2006-05-14	Common Stock (3172)	Direct
2006-05-05	Non-Qualified Stock Option (right to buy)	$59.575	M	1153	Disposed	2007-05-13	Common Stock (1153)	Direct
2006-05-05	Non-Qualified Stock Option (right to buy)	$59.575	M	3968	Disposed	2008-05-12	Common Stock (3968)	Direct
2006-05-05	Non-Qualified Stock Option (right to buy)	$61.85	M	28000	Disposed	2013-05-12	Common Stock (28000)	Direct
2006-05-05	Non-Qualified Stock Option (right to buy)	$62.85	M	8828	Disposed	2006-05-12	Common Stock (8828)	Direct
2006-05-05	Non-Qualified Stock Option (right to buy)	$62.85	M	9962	Disposed	2009-05-08	Common Stock (9962)	Direct
2006-05-05	Non-Qualified Stock Option (right to buy)	$62.85	M	15000	Disposed	2010-05-07	Common Stock (15000)	Direct
2006-05-05	Non-Qualified Stock Option (right to buy)	$64.5	M	3622	Disposed	2012-05-14	Common Stock (3622)	Direct
2006-05-05	Non-Qualified Stock Option (right to buy)	$86.95	A	908	Acquired	2007-05-11	Common Stock (908)	Direct
2006-05-05	Non-Qualified Stock Option (right to buy)	$86.95	A	3127	Acquired	2008-05-12	Common Stock (3127)	Direct
2006-05-05	Non-Qualified Stock Option (right to buy)	$86.95	A	8105	Acquired	2009-05-11	Common Stock (8105)	Direct
2006-05-05	Non-Qualified Stock Option (right to buy)	$86.95	A	12204	Acquired	2010-05-07	Common Stock (12204)	Direct
2006-05-05	Non-Qualified Stock Option (right to buy)	$86.95	A	2992	Acquired	2012-05-14	Common Stock (2992)	Direct
2006-05-05	Non-Qualified Stock Option (right to buy)	$86.95	A	22932	Acquired	2013-05-13	Common Stock (22932)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	2622	Indirect