3M CO — Director's Dealing 2007

May 17, 2007

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: 3M CO (MMM)
CIK: 0000066740
Period of Report: 2007-05-14

Reporting Person: PALENSKY FRED J (VICE PRESIDENT R&D)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2007-05-14	Common Stock	M	6958	$63.525	Acquired	44211	Direct
2007-05-14	Common Stock	F	5210	$84.83	Disposed	39001	Direct
2007-05-14	Common Stock	F	663	$84.83	Disposed	38338	Direct
2007-05-14	Common Stock	M	26517	$64.5	Acquired	64855	Direct
2007-05-14	Common Stock	F	20162	$84.83	Disposed	44693	Direct
2007-05-14	Common Stock	F	2713	$84.83	Disposed	41980	Direct
2007-05-14	Common Stock	M	822	$63.525	Acquired	42802	Direct
2007-05-14	Common Stock	F	615	$84.83	Disposed	42187	Direct
2007-05-14	Common Stock	F	88	$84.83	Disposed	42099	Direct
2007-05-14	Common Stock	M	6540	$63.525	Acquired	48639	Direct
2007-05-14	Common Stock	F	4897	$84.83	Disposed	43742	Direct
2007-05-14	Common Stock	F	701	$84.83	Disposed	43041	Direct
2007-05-14	Common Stock	M	8225	$61.85	Acquired	51266	Direct
2007-05-14	Common Stock	F	5996	$84.83	Disposed	45270	Direct
2007-05-14	Common Stock	F	951	$84.83	Disposed	44319	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2007-05-14	Non-Qualified Stock Option (right to buy)	$61.85	M	8225	Disposed	2013-05-12	Common Stock (8225)	Direct
2007-05-14	Non-Qualified Stock Option (right to buy)	$63.525	M	6958	Disposed	2008-05-12	Common Stock (6958)	Direct
2007-05-14	Non-Qualified Stock Option (right to buy)	$63.525	M	822	Disposed	2009-05-11	Common Stock (822)	Direct
2007-05-14	Non-Qualified Stock Option (right to buy)	$63.525	M	6540	Disposed	2010-05-07	Common Stock (6540)	Direct
2007-05-14	Non-Qualified Stock Option (right to buy)	$64.5	M	26517	Disposed	2012-05-14	Common Stock (26517)	Direct
2007-05-14	Non-Qualified Stock Option (right to buy)	$84.83	A	5873	Acquired	2008-05-12	Common Stock (5873)	Direct
2007-05-14	Non-Qualified Stock Option (right to buy)	$84.83	A	703	Acquired	2009-05-11	Common Stock (703)	Direct
2007-05-14	Non-Qualified Stock Option (right to buy)	$84.83	A	5598	Acquired	2010-05-07	Common Stock (5598)	Direct
2007-05-14	Non-Qualified Stock Option (right to buy)	$84.83	A	22875	Acquired	2012-05-14	Common Stock (22875)	Direct
2007-05-14	Non-Qualified Stock Option (right to buy)	$84.83	A	6947	Acquired	2013-05-13	Common Stock (6947)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	3574	Indirect