3M CO — Director's Dealing 2012

Mar 19, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: 3M CO (MMM)
CIK: 0000066740
Period of Report: 2012-03-16

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
2012-03-16	Common Stock	M	5186	$84.83	Acquired	51793	Direct
2012-03-16	Common Stock	S	5186	$90.00	Disposed	46607	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-03-16	Non-qualified Stock Option (Right to Buy)	$84.83	M	5186	Disposed	2012-05-14	Common Stock (5186)	Direct

Footnotes

F1: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 2, 2011.