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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
66740	3M Co	MMM	Surgical & Medical Instruments & Apparatus (3841)	410417775

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1220974	Marschall Smith	3M Center St. Paul MN 55144-1000	Vice President Legal	No	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock	Acquisiton	2012-02-15	16,500	$54.11	26,876	No	4	M	Direct
Common Stock	Disposition	2012-02-15	10,261	$87.01	16,615	No	4	F	Direct
Common Stock	Disposition	2012-02-15	2,664	$87.01	13,951	No	4	F	Direct
Common Stock	Disposition	2012-02-16	989	$87.58	12,962	No	4	S	Direct
Common Stock	Disposition	2012-02-16	100	$87.58	12,862	No	4	S	Direct
Common Stock	Disposition	2012-02-16	100	$87.58	12,762	No	4	S	Direct
Common Stock	Disposition	2012-02-16	2,200	$87.58	10,562	No	4	S	Direct
Common Stock	Disposition	2012-02-16	184	$87.59	10,378	No	4	S	Direct
Common Stock	Disposition	2012-02-16	2	$87.60	10,376	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	M	Direct
No	4	F	Direct
No	4	F	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Non-qualified Stock Option (Right to Buy)	Disposition	2012-02-15	16,500	$0.00	16,500	$54.11

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
17,951	2010-02-09	2019-02-08	No	4	M	Direct

Footnotes

This Form is being filed to report the exercise of a 3M stock option for a total of 16,500 shares by means of a stock swap. A stock swap is a method of exercising a stock option in which the option holder attests to the ownership of enough shares of stock already owned by the option holder to cover the exercise price of the option being exercised. As a result of this stock swap, the reporting person acquired ownership of an additional 3,575 shares of 3M common stock. As a result of this transaction, 2,664 shares were sold to pay withholding taxes to the respective government agencies.