3M CO (MMM) director Jennifer Rumsey submits initial insider ownership report

Rhea-AI Filing Summary

3M CO director Jennifer Rumsey filed an initial insider ownership report on Form 3. This filing identifies her as a director and establishes her status as a reporting person for future insider transaction disclosures. The report does not list any buy, sell, or other share transactions.

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SEC Form 3

FORM 3

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

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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

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1. Name and Address of Reporting Person^*

RUMSEY JENNIFER

(Last) (First) (Middle)

3M CENTER

(Street)

ST. PAUL MINNESOTA 55144

(City) (State) (Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
06/05/2026

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

3a. Foreign Trading Symbol

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

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

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

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 Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

Exhibit Index - 24.1 Power of Attorney

No securities are beneficially owned.

	/s/ Patricia L. Meagher, attorney-in-fact for Jennifer W. Rumsey	06/09/2026
	** 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 5 (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.
* Form 3: SEC 1473 (03-26)

FAQ

What does Jennifer Rumsey’s Form 3 filing for 3M CO (MMM) mean?

The Form 3 filing records Jennifer Rumsey as an insider of 3M CO, in her role as director. It serves as her initial statement of beneficial ownership and sets the baseline for any future insider trading disclosures in Forms 4 or 5.

Did Jennifer Rumsey buy or sell any 3M CO (MMM) shares in this Form 3?

No, this Form 3 does not report any share purchases, sales, or other transactions by Jennifer Rumsey. It is purely an initial ownership registration, with transaction counts and share amounts all indicated as zero in the summary data.

What insider role does Jennifer Rumsey have at 3M CO (MMM)?

Jennifer Rumsey is identified as a director of 3M CO in the filing. She is not listed as an officer or ten percent owner. As a director, she is required to report her equity holdings and future changes through Forms 3, 4, and 5.

Does Jennifer Rumsey’s Form 3 show any derivative positions in 3M CO (MMM)?

The Form 3 data shows no derivative positions, such as options or warrants, for Jennifer Rumsey. The derivative summary is empty, and exercise-related counts are zero, indicating no reported derivative transactions or holdings in this particular filing snapshot.

Why are there no transactions listed in Jennifer Rumsey’s 3M CO Form 3?

Form 3 is often filed when someone first becomes a reporting insider, so it may show no recent transactions. In this case, the transaction summary fields all show zeros, indicating no reportable buys, sells, or other movements at the time of this filing.