3M CO — Director's Dealing 2010

Jan 11, 2010

SEC Form 5 — Annual Statement of Changes in Beneficial Ownership

Issuer: 3M CO (MMM)
CIK: 0000066740
Period of Report: 2009-12-31

Reporting Person: Shin Hak Cheol (EXEC VP INDUSTRIAL)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2009-11-18	Common Stock	G	120	—	Disposed	58603	Direct
2009-12-31	Common Stock	J	32077	—	Disposed	26526	Direct
2009-12-31	Common Stock	J	12937	—	Disposed	13589	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2009-12-31	Restricted Stock Units	$	J	32077	Acquired		Common Stock (32077)	Direct
2009-12-31	Restricted Stock Units	$	J	12937	Acquired		Common Stock (12937)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	1239	Indirect

Footnotes

F1: Due to reporting automation changes instituted by Issuer's stock plan vendor, the reporting person's restricted stock units will be reported on Table II going forward. This transaction indicates the number of restricted stock units that will be transferred to Table II.

F2: Each restricted stock unit represents a contingent right to receive one share of 3M common stock.

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

F4: The restricted stock units will vest 100% three years from the grant date (12/1/2008).

F5: The restricted stock units will not vest 100% three years from the grant date (2/9/2009).