3M CO — Director's Dealing 2010

Sep 7, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: 3M CO (MMM)
CIK: 0000066740
Period of Report: 2010-09-02

Reporting Person: Meline David W (VP CORP CNTRLR & CF ACCTG OFCR)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-09-02	Common Stock	M	3126	$81.87	Acquired	5229	Direct
2010-09-02	Common Stock	F	1023	$81.87	Disposed	4206	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-09-02	Restricted Stock Units	$	M	3126	Disposed		Common Stock (3126)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	173	Indirect

Footnotes

F1: Each restricted stock unit represents a contingent right to receive one share of 3M common stock.

F2: The terms of the initial award (9,379 restricted stock units) provided for vesting in four equal installments on the anniversary of the grant date, September 2, 2008.

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