Theresa E. Reinseth - 06 Feb 2026 Form 4 Insider Report for 3M CO (MMM)

Role: Sr Vice President & CAO
Signature: /s/ Patricia L. Meagher, attorney-in-fact for Theresa E. Reinseth
Issuer symbol: MMM
Transactions as of: 06 Feb 2026
Net transactions value: +$310,252
Form type: 4
Filing time: 09 Feb 2026, 16:23:42 UTC
Previous filing: 06 Aug 2025
Next filing: 12 Feb 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Reinseth Theresa E	Sr Vice President & CAO	3M CENTER, ST. PAUL	/s/ Patricia L. Meagher, attorney-in-fact for Theresa E. Reinseth	09 Feb 2026	0001772245

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	MMM	Common Stock	Options Exercise	$458,386	+2,655	+103%	$172.65	5,239	06 Feb 2026	Direct
transaction	MMM	Common Stock	Tax liability	$148,134	-858	-16%	$172.65	4,381	06 Feb 2026	Direct	F1
holding	MMM	Common Stock						565	06 Feb 2026	By 401k/paesop Trust

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	-2,655	-100%	$0.000000	0	06 Feb 2026	Common Stock	2,655		Direct	F2, F3

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

Explanation of Responses:

Id	Content
F1	Includes shares acquired pursuant to 3M's Dividend Reinvestment Plan.
F2	Each restricted stock unit represents a contingent right to receive one share of 3M common stock.
F3	The restricted stock units vest 100% three years from the grant date of February 7, 2023.