[Form 4] 3M CO Insider Trading Activity

Rhea-AI Filing Summary

3M (MMM): Insider transaction — EVP & Chief Info Digital Off Mark W. Murphy exercised a non-qualified stock option for 19,061 shares at $142.94 and, on the same day (10/29/2025), sold shares in multiple trades at prices ranging from $166.50 to $166.75. Following these transactions, he directly held 6,594.1875 shares. The option reported was fully exercised, leaving 0 derivative securities reported as beneficially owned after the transactions.

According to the footnotes, the share balance includes amounts acquired under 3M’s General Employee Stock Purchase Plan.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Murphy Mark W.

(Last) (First) (Middle)

3M CENTER

(Street)

ST. PAUL MN 55144

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
3M CO [ MMM ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP & Chief Info Digital Off

3. Date of Earliest Transaction (Month/Day/Year)
10/29/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	10/29/2025		M		19,061	A	$142.94	25,655.1875	D
Common Stock	10/29/2025		S		6,611	D	$166.5	19,044.1875	D
Common Stock	10/29/2025		S		100	D	$166.5004	18,944.1875	D
Common Stock	10/29/2025		S		725	D	$166.51	18,219.1875	D
Common Stock	10/29/2025		S		2,183	D	$166.52	16,036.1875	D
Common Stock	10/29/2025		S		1,380	D	$166.53	14,656.1875	D
Common Stock	10/29/2025		S		940	D	$166.54	13,716.1875	D
Common Stock	10/29/2025		S		765	D	$166.55	12,951.1875	D
Common Stock	10/29/2025		S		1,466	D	$166.56	11,485.1875	D
Common Stock	10/29/2025		S		260	D	$166.57	11,225.1875	D
Common Stock	10/29/2025		S		623	D	$166.58	10,602.1875	D
Common Stock	10/29/2025		S		10	D	$166.59	10,592.1875	D
Common Stock	10/29/2025		S		122	D	$166.62	10,470.1875	D
Common Stock	10/29/2025		S		1,700	D	$166.625	8,770.1875	D
Common Stock	10/29/2025		S		12	D	$166.63	8,758.1875	D
Common Stock	10/29/2025		S		7	D	$166.65	8,751.1875	D
Common Stock	10/29/2025		S		1,701	D	$166.66	7,050.1875	D
Common Stock	10/29/2025		S		104	D	$166.67	6,946.1875	D
Common Stock	10/29/2025		S		1	D	$166.68	6,945.1875	D
Common Stock	10/29/2025		S		1	D	$166.73	6,944.1875	D
Common Stock	10/29/2025		S		350	D	$166.75	6,594.1875(1)	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Non-qualified Stock Option (Right to Buy)	$142.94	10/29/2025		M			19,061	02/08/2023(2)	02/06/2032	Common Stock	19,061	$0	0	D

Explanation of Responses:

1. Includes shares acquired under 3M's General Employee Stock Purchase Plan.

2. The stock option will vest and become exercisable in a series of three equal installments on each of the first, second and third anniversary of the grant date.

	Patricia L. Meagher, attorney-in-fact for Mark W. Murphy	10/30/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did 3M (MMM) executive Mark W. Murphy report on Form 4?

He exercised a non-qualified stock option for 19,061 shares at $142.94 and sold shares on 10/29/2025 at prices between $166.50 and $166.75.

What is Mark W. Murphy’s role at 3M (MMM)?

He is an Officer, serving as EVP & Chief Info Digital Off.

How many 3M (MMM) shares does Mark W. Murphy hold after the transactions?

He directly holds 6,594.1875 shares after the reported transactions.

What was the option exercise price and type?

It was a non-qualified stock option exercised at $142.94 per share covering 19,061 shares.

At what prices were the 3M (MMM) shares sold?

Sales occurred in multiple trades at prices from $166.50 to $166.75, including trades at $166.66 and nearby levels.

Does the remaining balance include ESPP shares?

Yes. The footnote states it includes shares acquired under 3M’s General Employee Stock Purchase Plan.

Are any derivative securities reported as held after the transactions?

No. The filing shows 0 derivative securities beneficially owned after the exercise.