3M CO — Director's Dealing 2010

Oct 26, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: 3M CO (MMM)
CIK: 0000066740
Period of Report: 2010-10-25

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
2010-10-25	Common Stock	S	9970	$91.00	Disposed	29580	Direct
2010-10-25	Common Stock	M	9705	$85.50	Acquired	39285	Direct
2010-10-25	Common Stock	S	9705	$91.00	Disposed	29580	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-10-25	Non-qualified Stock Option (Right to Buy)	$85.50	M	9705	Disposed	2011-05-06	Common Stock (9705)	Direct

Footnotes

F1: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on July 29, 2010.