3M CO — Director's Dealing 2015

Feb 5, 2015

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: 3M CO (MMM)
CIK: 0000066740
Period of Report: 2015-02-03

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2015-02-03	Common Stock	A	5109.455	—	Acquired	11936.455	Direct
2015-02-03	Common Stock	F	1738	$165.94	Disposed	10198.455	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2015-02-03	Non-qualified Stock Option (Right to Buy)	$165.94	A	40323	Acquired	2025-02-03	Common Stock (40323)	Direct

Footnotes

F1: This transaction reflects the imminent delivery of 5109.455 shares of 3M Common Stock earned as the result of the vesting of the 2012 performance shares awarded to the reporting person under the 3M Long-Term Incentive Plan. 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 (2/3/2015).