3M CO — Director's Dealing 2013

May 6, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: 3M CO (MMM)
CIK: 0000066740
Period of Report: 2013-05-03

Reporting Person: PALENSKY FRED J (EXEC VP R&D & CHF TECH OFF)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-05-03	Common Stock	S	2800	$108.31	Disposed	31272	Direct
2013-05-03	Common Stock	S	2100	$108.3114	Disposed	29172	Direct
2013-05-03	Common Stock	S	100	$108.32	Disposed	29072	Direct
2013-05-03	Common Stock	M	5344	$84.40	Acquired	34416	Direct
2013-05-03	Common Stock	S	4944	$108.39	Disposed	29472	Direct
2013-05-03	Common Stock	S	100	$108.40	Disposed	29372	Direct
2013-05-03	Common Stock	S	100	$108.402	Disposed	29272	Direct
2013-05-03	Common Stock	S	100	$108.403	Disposed	29172	Direct
2013-05-03	Common Stock	S	100	$108.41	Disposed	29072	Direct
2013-05-03	Common Stock	M	36637	$96.83	Acquired	65709	Direct
2013-05-03	Common Stock	S	1100	$108.20	Disposed	64608	Direct
2013-05-03	Common Stock	S	700	$108.205	Disposed	63909	Direct
2013-05-03	Common Stock	S	3129	$108.21	Disposed	60780	Direct
2013-05-03	Common Stock	S	2155	$108.215	Disposed	58625	Direct
2013-05-03	Common Stock	S	100	$108.2175	Disposed	58525	Direct
2013-05-03	Common Stock	S	300	$108.218	Disposed	58225	Direct
2013-05-03	Common Stock	S	700	$108.219	Disposed	57525	Direct
2013-05-03	Common Stock	S	2656	$108.22	Disposed	54869	Direct
2013-05-03	Common Stock	S	2216	$108.225	Disposed	52653	Direct
2013-05-03	Common Stock	S	100	$108.2275	Disposed	52553	Direct
2013-05-03	Common Stock	S	400	$108.228	Disposed	52153	Direct
2013-05-03	Common Stock	S	100	$108.229	Disposed	52053	Direct
2013-05-03	Common Stock	S	600	$108.23	Disposed	51453	Direct
2013-05-03	Common Stock	S	1444	$108.235	Disposed	50009	Direct
2013-05-03	Common Stock	S	765	$108.24	Disposed	49244	Direct
2013-05-03	Common Stock	S	200	$108.245	Disposed	49044	Direct
2013-05-03	Common Stock	S	200	$108.255	Disposed	48844	Direct
2013-05-03	Common Stock	S	2200	$108.265	Disposed	46644	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2013-05-03	Non-qualified Stock Option (Right to Buy)	$84.40	M	5344	Disposed	2014-05-09	Common Stock (5344)	Direct
2013-05-03	Non-qualified Stock Option (Right to Buy)	$96.83	M	36637	Disposed	2014-05-09	Common Stock (36637)	Direct