3M CO — Director's Dealing 2016

Feb 4, 2016

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: 3M CO (MMM)
CIK: 0000066740
Period of Report: 2016-02-02

Reporting Person: McGrath Marlene Mary (Senior VP - Human Resources)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2016-02-02	Common Stock	A	8127.315	—	Acquired	18325	Direct
2016-02-02	Common Stock	F	2952	—	Disposed	15373	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2016-02-02	Non-qualified Stock Option (Right to Buy)	$147.87	A	37755	Acquired	2026-02-02	Common Stock (37755)	Direct

Footnotes

F1: Represents shares of 3M common stock that will be delivered imminently pursuant to the terms of a performance share award made to the reporting person on 3/1/2013. The performance-based vesting requirements applicable to such award were satisfied on the date reported in Column 2 above, which represents the date on which the level of performance attained was certified. The number of shares withheld for taxes are estimated and will be revised by amendment, if necessary.

F2: This option becomes exercisable in equal installments on each of the first three anniversaries of the grant date (2/2/2016).