Monish D. Patolawala - Jul 1, 2021 Form 4 Insider Report for 3M CO (MMM)

Role: Executive VP and CFO
Signature: /s/ Patricia L. Meagher, attorney-in-fact for Monish D. Patolawala
Stock symbol: MMM
Transactions as of: Jul 1, 2021
Transactions value $: $666,752
Form type: 4
Date filed: 7/6/2021, 01:21 PM
Next filing: Nov 3, 2021

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	MMM	Common Stock	Options Exercise	$1.2M	+6.01K		$199.09	6.01K	Jul 1, 2021	Direct
transaction	MMM	Common Stock	Tax liability	-$530K	-2.66K	-44.3%	$199.09	3.35K	Jul 1, 2021	Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	MMM	Restricted Stock Units	Options Exercise	$0	-6.01K	-33.33%	$0.00	12K	Jul 1, 2021	Common Stock	6.01K		Direct	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Restricted stock units convert into 3M common stock on a one-for-one basis.
F2	On July 1, 2020, the reporting person was granted 18,039 restricted stock units, vesting in three equal annual installments beginning July 1, 2021.