3M CO — Director's Dealing 2014

May 7, 2014

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: 3M CO (MMM)
CIK: 0000066740
Period of Report: 2014-05-06

Reporting Person: THULIN INGE G (Director, Chairman, President & CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2014-05-06	Common Stock	S	100	$140.17	Disposed	62203	Direct
2014-05-06	Common Stock	S	100	$140.18	Disposed	62103	Direct
2014-05-06	Common Stock	S	200	$140.22	Disposed	61903	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2014-05-06	Non-qualified Stock Option (Right to Buy)	$125.28	M	43677	Disposed	2014-05-09	Common Stock (43677)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	1442	Indirect

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 November 14, 2013.

F2: Includes shares acquired under 3M's General Employee Stock Purchase Plan.

F3: Includes shares acquired during the fiscal year pursuant to the 3M Voluntary Investment Plan.