3M CO — Director's Dealing 2018

Feb 21, 2018

SEC Form 4/A — Form 4/A

Issuer: 3M CO (MMM)
CIK: 0000066740
Period of Report: 2018-02-06

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2018-02-06	Common Stock	A	6015.76	—	Acquired	26922.5406	Direct
2018-02-06	Common Stock	F	2759	—	Disposed	24163.5406	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2018-02-06	Non-qualified Stock Option (Right to Buy)	$233.63	A	22200	Acquired	2028-02-04	Common Stock (22200)	Direct

Footnotes

F1: On February 8, 2018, the reporting person reported the imminent delivery of a number of shares of 3M Common Stock earned as a result of the 2015 performance shares awarded to the reporting person under the 3M Long-Term Incentive Plan. The number of shares to be withheld from this delivery for the payment of withholding taxes was estimated at that time. This amendment is being filed to update the Form 4 with the number of shares actually received after withholding taxes.