3M CO — Director's Dealing 2012

Feb 13, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: 3M CO (MMM)
CIK: 0000066740
Period of Report: 2012-02-10

Reporting Person: BUCKLEY GEORGE W (Director, CHAIRMAN OF THE BOARD & CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-02-10	Common Stock	M	289044	$54.11	Acquired	479121	Direct
2012-02-10	Common Stock	S	4109	$86.755	Disposed	475012	Direct
2012-02-10	Common Stock	S	1800	$86.76	Disposed	473212	Direct
2012-02-10	Common Stock	S	400	$86.765	Disposed	472812	Direct
2012-02-10	Common Stock	S	1000	$86.77	Disposed	471812	Direct
2012-02-10	Common Stock	S	9545	$86.775	Disposed	462267	Direct
2012-02-10	Common Stock	S	200	$86.7775	Disposed	462067	Direct
2012-02-10	Common Stock	S	3300	$86.78	Disposed	458767	Direct
2012-02-10	Common Stock	S	100	$86.7818	Disposed	458667	Direct
2012-02-10	Common Stock	S	6400	$86.785	Disposed	452267	Direct
2012-02-10	Common Stock	S	100	$86.789	Disposed	452167	Direct
2012-02-10	Common Stock	S	5000	$86.79	Disposed	447167	Direct
2012-02-10	Common Stock	S	2300	$86.795	Disposed	444867	Direct
2012-02-10	Common Stock	S	100	$86.80	Disposed	444767	Direct
2012-02-10	Common Stock	S	300	$86.8018	Disposed	444467	Direct
2012-02-10	Common Stock	S	4391	$86.805	Disposed	440076	Direct
2012-02-10	Common Stock	S	400	$86.8075	Disposed	439676	Direct
2012-02-10	Common Stock	S	309	$86.81	Disposed	439367	Direct
2012-02-10	Common Stock	S	2000	$86.815	Disposed	437367	Direct
2012-02-10	Common Stock	S	200	$86.82	Disposed	437167	Direct
2012-02-10	Common Stock	S	2800	$86.825	Disposed	434367	Direct
2012-02-10	Common Stock	S	1100	$86.83	Disposed	433267	Direct
2012-02-10	Common Stock	S	7700	$86.835	Disposed	425567	Direct
2012-02-10	Common Stock	S	400	$86.8375	Disposed	425167	Direct
2012-02-10	Common Stock	S	100	$86.839	Disposed	425067	Direct
2012-02-10	Common Stock	S	2600	$86.84	Disposed	422467	Direct
2012-02-10	Common Stock	S	7698	$86.845	Disposed	414769	Direct
2012-02-10	Common Stock	S	1800	$86.85	Disposed	412969	Direct
2012-02-10	Common Stock	S	7232	$86.855	Disposed	405737	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-02-10	Non-qualified Stock Option (Right to Buy)	$54.11	M	289044	Disposed	2019-02-08	Common Stock (289044)	Direct