3M CO — Director's Dealing 2021

May 5, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: 3M CO (MMM)
CIK: 0000066740
Period of Report: 2021-05-04

Reporting Person: Reinseth Theresa E (Senior Vice President/CAO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-05-04	Common Stock	M	33	$87.89	Acquired	1425.5344	Direct
2021-05-04	Common Stock	S	33	$199.54	Disposed	1392.5344	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-05-04	Non-qualified Stock Option (Right to Buy)	$87.89	M	33	Disposed	2022-02-07	Common Stock (33)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	476	Indirect