Notice of Proposed Sale · 144

3M Company

MMMNYSEEQUITYCurrent

Notice of Proposed Sale

Filed Aug 5, 2026Accepted Aug 5, 2026, 2:59 PM EDTFiling CIK 66740Accession 0001959173-26-005671

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Structured filing — 144

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Notice of proposed sale. The proposed amounts below do not establish that a sale occurred.

Proposed-sale notice

Issuer: 3M CO
Issuer CIK: 0000066740
SEC file number: 001-03285
Phone: 6517331110
Person for whose account securities are to be sold: Chavez Rodriguez Beatriz Karina
Relationships to issuer: Officer
Street: 3M CENTER
Street (continued): BLDG. 220-9E-02
City: ST PAUL
State / country code: MN
Postal code: 55144-1000

Securities proposed for sale

Securities proposed for sale · 1 reported row
Security	Proposed units	Aggregate market value	Units outstanding	Approximate sale date	Exchange	Broker / market maker
Common	3,635	663,429.67	515,722,417	08/05/2026	NYSE	Fidelity Brokerage Services LLC

Broker / market maker — proposed row 1, entry 1

Name: Fidelity Brokerage Services LLC
Street: 900 Salem Street
City: Smithfield
State / country code: RI
Postal code: 02917

Acquisition of securities to be sold

Acquisition of securities to be sold · 35 reported rows
Security	Acquired	Nature of acquisition	Acquired from	Amount acquired	Gift transaction	Payment date	Nature of payment
Common	02/05/2016	Restricted Stock Vesting	Issuer	170	N	02/05/2016	Compensation
Common	04/29/2016	ESPP Purchase	Issuer	14	N	04/29/2016	Cash
Common	05/31/2016	ESPP Purchase	Issuer	14	N	05/31/2016	Cash
Common	06/30/2016	ESPP Purchase	Issuer	14	N	06/30/2016	Cash
Common	07/29/2016	ESPP Purchase	Issuer	13	N	07/29/2016	Cash
Common	08/31/2016	ESPP Purchase	Issuer	13	N	08/31/2016	Cash
Common	01/31/2017	ESPP Purchase	Issuer	14	N	01/31/2017	Cash
Common	02/04/2017	Restricted Stock Vesting	Issuer	357	N	02/04/2017	Compensation
Common	02/28/2017	ESPP Purchase	Issuer	14	N	02/28/2017	Cash
Common	03/31/2017	ESPP Purchase	Issuer	12	N	03/31/2017	Cash
Common	04/28/2017	ESPP Purchase	Issuer	12	N	04/28/2017	Cash
Common	05/31/2017	ESPP Purchase	Issuer	12	N	05/31/2017	Cash
Common	06/30/2017	ESPP Purchase	Issuer	12	N	06/30/2017	Cash
Common	08/31/2017	ESPP Purchase	Issuer	12	N	08/31/2017	Cash
Common	09/29/2017	ESPP Purchase	Issuer	12	N	09/29/2017	Cash
Common	05/31/2018	ESPP Purchase	Issuer	12	N	05/31/2018	Cash
Common	06/29/2018	ESPP Purchase	Issuer	12	N	06/29/2018	Cash
Common	07/31/2018	ESPP Purchase	Issuer	2	N	07/31/2018	Cash
Common	01/31/2019	ESPP Purchase	Issuer	13	N	01/31/2019	Cash
Common	02/28/2019	ESPP Purchase	Issuer	12	N	02/28/2019	Cash
Common	03/29/2019	ESPP Purchase	Issuer	59	N	03/29/2019	Cash
Common	05/31/2019	ESPP Purchase	Issuer	13	N	05/31/2019	Cash
Common	07/31/2019	ESPP Purchase	Issuer	3	N	07/31/2019	Cash
Common	01/31/2020	ESPP Purchase	Issuer	14	N	01/31/2020	Cash
Common	02/07/2020	Restricted Stock Vesting	Issuer	217	N	02/07/2020	Compensation
Common	01/29/2021	ESPP Purchase	Issuer	15	N	01/29/2021	Cash
Common	02/26/2021	ESPP Purchase	Issuer	15	N	02/26/2021	Cash
Common	03/31/2021	ESPP Purchase	Issuer	80	N	03/31/2021	Cash
Common	04/30/2021	ESPP Purchase	Issuer	14	N	04/30/2021	Cash
Common	05/28/2021	ESPP Purchase	Issuer	13	N	05/28/2021	Cash
Common	06/30/2021	ESPP Purchase	Issuer	2	N	06/30/2021	Cash
Common	01/31/2022	ESPP Purchase	Issuer	25	N	01/31/2022	Cash
Common	02/05/2022	Restricted Stock Vesting	Issuer	342	N	02/05/2022	Compensation
Common	02/28/2022	ESPP Purchase	Issuer	27	N	02/28/2022	Cash
Common	02/08/2025	Restricted Stock Vesting	Issuer	2,050	N	02/08/2025	Compensation

Prior-sale reporting

Nothing to report for the preceding three months: Y

Notice signature

Notice date: 08/05/2026
Signed: /s/ Daniel Tucci, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Beatriz Chavez Rodriguez

Company context

Current securities

MMMNYSE · EQUITY · Current

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