3M CO — Director's Dealing 2012

Oct 9, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: 3M CO (MMM)
CIK: 0000066740
Period of Report: 2012-10-05

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
2012-10-05	Common Stock	M	17436	$76.80	Acquired	48801	Direct
2012-10-05	Common Stock	S	15354	$94.60	Disposed	33447	Direct
2012-10-05	Common Stock	M	12301	$80.50	Acquired	45748	Direct
2012-10-05	Common Stock	S	11168	$94.60	Disposed	34580	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-10-05	Non-qualified Stock Option (Right to Buy)	$76.80	M	17436	Disposed	2015-05-10	Common Stock (17436)	Direct
2012-10-05	Non-qualified Stock Option (Right to Buy)	$80.50	M	12301	Disposed	2013-05-12	Common Stock (12301)	Direct

Footnotes

F1: This Form is being filed to report the exercise of a 3M stock option by means of a cashless-sell-to-cover method (selling enough shares to cover option share purchase price, fee and taxes, then retaining the remaining shares), pursuant to the reporting person's 10b5-1 trading plan dated May 3, 2012 and filed with the SEC on a Form 8-K on May 4, 2012.