3M CO — Director's Dealing 2010

Aug 2, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: 3M CO (MMM)
CIK: 0000066740
Period of Report: 2010-07-30

Reporting Person: SMITH MARSCHALL (VICE PRESIDENT LEGAL)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-07-30	Common Stock	S	100	$85.45	Disposed	2432	Direct
2010-07-30	Common Stock	S	200	$85.47	Disposed	2232	Direct
2010-07-30	Common Stock	S	200	$85.50	Disposed	2032	Direct
2010-07-30	Common Stock	S	100	$85.5013	Disposed	1932	Direct
2010-07-30	Common Stock	S	100	$85.5054	Disposed	1832	Direct
2010-07-30	Common Stock	S	100	$85.53	Disposed	1732	Direct
2010-07-30	Common Stock	S	100	$85.54	Disposed	1632	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 May 11, 2010.