3M CO — Director's Dealing 2016

May 12, 2016

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: 3M CO (MMM)
CIK: 0000066740
Period of Report: 2016-05-11

Reporting Person: THULIN INGE G (Director, Chairman, President & CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2016-05-11	Common Stock	S	500	$170.13	Disposed	155583	Direct
2016-05-11	Common Stock	S	200	$170.135	Disposed	155383	Direct
2016-05-11	Common Stock	S	300	$170.14	Disposed	155083	Direct
2016-05-11	Common Stock	S	300	$170.161	Disposed	154783	Direct
2016-05-11	Common Stock	S	400	$170.17	Disposed	154383	Direct
2016-05-11	Common Stock	S	300	$170.175	Disposed	154083	Direct
2016-05-11	Common Stock	S	694	$170.18	Disposed	153389	Direct
2016-05-11	Common Stock	S	100	$170.19	Disposed	153289	Direct
2016-05-11	Common Stock	S	100	$170.195	Disposed	153189	Direct
2016-05-11	Common Stock	S	100	$170.215	Disposed	153089	Direct
2016-05-11	Common Stock	S	100	$170.216	Disposed	152989	Direct
2016-05-11	Common Stock	S	100	$170.23	Disposed	152889	Direct
2016-05-11	Common Stock	S	50	$170.24	Disposed	152839	Direct
2016-05-11	Common Stock	S	804	$170.25	Disposed	152035	Direct
2016-05-11	Common Stock	S	300	$170.26	Disposed	151735	Direct
2016-05-11	Common Stock	S	306	$170.265	Disposed	151429	Direct
2016-05-11	Common Stock	S	700	$170.27	Disposed	150729	Direct
2016-05-11	Common Stock	S	100	$170.305	Disposed	150629	Direct
2016-05-11	Common Stock	S	100	$170.315	Disposed	150529	Direct
2016-05-11	Common Stock	S	104	$170.33	Disposed	150425	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	1515	Indirect

Footnotes

F1: Includes shares acquired under 3M's General Employee Stock Purchase Plan.

F2: Includes dividend share equivalents, accrued quarterly, pursuant to 3M's Deferred Compensation Plan.

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