144 0001890011 XXXXXXXX LIVE 0000066740 3M CO 001-03285 3M CENTER BLDG. 220-9E-02 ST PAUL MN 55144-1000 6517331110 Chavez Rodriguez Beatriz Karina Officer Common Fidelity Brokerage Services LLC

900 Salem Street Smithfield RI 02917

3635 663429.67 515722417 08/05/2026 NYSE Common 02/05/2016 Restricted Stock Vesting Issuer N 170 02/05/2016 Compensation Common 04/29/2016 ESPP Purchase Issuer N 14 04/29/2016 Cash Common 05/31/2016 ESPP Purchase Issuer N 14 05/31/2016 Cash Common 06/30/2016 ESPP Purchase Issuer N 14 06/30/2016 Cash Common 07/29/2016 ESPP Purchase Issuer N 13 07/29/2016 Cash Common 08/31/2016 ESPP Purchase Issuer N 13 08/31/2016 Cash Common 01/31/2017 ESPP Purchase Issuer N 14 01/31/2017 Cash Common 02/04/2017 Restricted Stock Vesting Issuer N 357 02/04/2017 Compensation Common 02/28/2017 ESPP Purchase Issuer N 14 02/28/2017 Cash Common 03/31/2017 ESPP Purchase Issuer N 12 03/31/2017 Cash Common 04/28/2017 ESPP Purchase Issuer N 12 04/28/2017 Cash Common 05/31/2017 ESPP Purchase Issuer N 12 05/31/2017 Cash Common 06/30/2017 ESPP Purchase Issuer N 12 06/30/2017 Cash Common 08/31/2017 ESPP Purchase Issuer N 12 08/31/2017 Cash Common 09/29/2017 ESPP Purchase Issuer N 12 09/29/2017 Cash Common 05/31/2018 ESPP Purchase Issuer N 12 05/31/2018 Cash Common 06/29/2018 ESPP Purchase Issuer N 12 06/29/2018 Cash Common 07/31/2018 ESPP Purchase Issuer N 2 07/31/2018 Cash Common 01/31/2019 ESPP Purchase Issuer N 13 01/31/2019 Cash Common 02/28/2019 ESPP Purchase Issuer N 12 02/28/2019 Cash Common 03/29/2019 ESPP Purchase Issuer N 59 03/29/2019 Cash Common 05/31/2019 ESPP Purchase Issuer N 13 05/31/2019 Cash Common 07/31/2019 ESPP Purchase Issuer N 3 07/31/2019 Cash Common 01/31/2020 ESPP Purchase Issuer N 14 01/31/2020 Cash Common 02/07/2020 Restricted Stock Vesting Issuer N 217 02/07/2020 Compensation Common 01/29/2021 ESPP Purchase Issuer N 15 01/29/2021 Cash Common 02/26/2021 ESPP Purchase Issuer N 15 02/26/2021 Cash Common 03/31/2021 ESPP Purchase Issuer N 80 03/31/2021 Cash Common 04/30/2021 ESPP Purchase Issuer N 14 04/30/2021 Cash Common 05/28/2021 ESPP Purchase Issuer N 13 05/28/2021 Cash Common 06/30/2021 ESPP Purchase Issuer N 2 06/30/2021 Cash Common 01/31/2022 ESPP Purchase Issuer N 25 01/31/2022 Cash Common 02/05/2022 Restricted Stock Vesting Issuer N 342 02/05/2022 Compensation Common 02/28/2022 ESPP Purchase Issuer N 27 02/28/2022 Cash Common 02/08/2025 Restricted Stock Vesting Issuer N 2050 02/08/2025 Compensation Y 08/05/2026 /s/ Daniel Tucci, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Beatriz Chavez Rodriguez