3M CO — Director's Dealing 2012

Mar 5, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: 3M CO (MMM)
CIK: 0000066740
Period of Report: 2012-03-02

Reporting Person: SAUER BRAD T (EXEC VP HEALTH CARE)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-03-02	Common Stock	M	25481	$87.52	Acquired	41687	Direct
2012-03-02	Common Stock	F	10881	$87.52	Disposed	30806	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-03-02	Restricted Stock Units	$	M	25481	Disposed		Common Stock (25481)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	1477	Indirect

Footnotes

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

F2: The restricted stock units will vest 100% four years from the grant date (3/3/2008).

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