3M CO — Director's Dealing 2010

Jul 19, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: 3M CO (MMM)
CIK: 0000066740
Period of Report: 2010-07-16

Reporting Person: SMITH MARSCHALL (VICE PRESIDENT LEGAL)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-07-16	Common Stock	M	1193	$80.95	Acquired	2825	Direct
2010-07-16	Common Stock	F	391	$80.95	Disposed	2434	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-07-16	Restricted Stock Units	$0	M	1193	Disposed		Common Stock (1193)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	355	Indirect

Footnotes

F1: The terms of the initial award (3,577 restricted stock units) provided for vesting in three equal annual installments on the anniversary of the grant date (7/16/2007).

F2: Distribution of shares as a result of vesting of a portion of restricted stock units (391 shares withheld for taxes).

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