3M CO — Director's Dealing 2010

Apr 26, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: 3M CO (MMM)
CIK: 0000066740
Period of Report: 2010-04-23

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
2010-04-23	Common Stock	M	5598	$84.83	Acquired	56180	Direct
2010-04-23	Common Stock	S	5598	$86.25	Disposed	50582	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-04-23	Non-qualified Stock Option (Right to Buy)	$84.83	M	5598	Disposed	2010-05-07	Common Stock (5598)	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 February 11, 2010.