Filed Pursuant to Rule 433

Dated September 3, 2026

Registration Statement No. 333-293169

3M Company

€500,000,000 3.500% Notes due 2028

€500,000,000 3.900% Notes due 2031

€500,000,000 4.100% Notes due 2034

Summary of Terms

* A security rating is not a recommendation to buy, sell or hold securities and should be evaluated independently of any other rating. The rating is subject to revision or withdrawal at any time.

** Under Rule 15c6-1 of the Securities Exchange Act of 1934, as amended, trades in the secondary market generally are required to settle in one business day, unless the parties to a trade expressly agree otherwise. Accordingly, purchasers who wish to trade the 2028 Notes on any day prior to the London business day before delivery will be required to specify alternative settlement arrangements at the time of any such trade to prevent a failed settlement and should consult their own advisors.

* A security rating is not a recommendation to buy, sell or hold securities and should be evaluated independently of any other rating. The rating is subject to revision or withdrawal at any time.

** Under Rule 15c6-1 of the Securities Exchange Act of 1934, as amended, trades in the secondary market generally are required to settle in one business day, unless the parties to a trade expressly agree otherwise. Accordingly, purchasers who wish to trade the 2031 Notes on any day prior to the London business day before delivery will be required to specify alternative settlement arrangements at the time of any such trade to prevent a failed settlement and should consult their own advisors.

* A security rating is not a recommendation to buy, sell or hold securities and should be evaluated independently of any other rating. The rating is subject to revision or withdrawal at any time.

** Under Rule 15c6-1 of the Securities Exchange Act of 1934, as amended, trades in the secondary market generally are required to settle in one business day, unless the parties to a trade expressly agree otherwise. Accordingly, purchasers who wish to trade the 2034 Notes on any day prior to the London business day before delivery will be required to specify alternative settlement arrangements at the time of any such trade to prevent a failed settlement and should consult their own advisors.

MiFID II and UK MiFIR – professionals / ECPs-only / No EEA PRIIPs KID – Manufacturer target market (MiFID II and UK MiFIR product governance) is eligible counterparties and professional clients only (all distribution channels). No EEA PRIIPs key information document (KID) has been prepared as the Notes are not available to retail investors in the European Economic Area.

The Issuer has filed a registration statement (including a prospectus and a prospectus supplement) with the Securities and Exchange Commission (the “SEC”) for the offering to which this communication relates. Before you invest, you should read the prospectus and prospectus supplement thereto in that registration statement and other documents the Issuer has filed with the SEC for more complete information about the Issuer and this offering. You may get these documents for free by visiting EDGAR on the SEC’s website at www.sec.gov. Alternatively, the Issuer, any underwriter or any dealer participating in the offering will arrange to send you the prospectus if you request it by calling Deutsche Bank AG, London Branch toll-free at 1-800-503-4611, Merrill Lynch International toll-free at 1-800-294-1322, Citigroup Global Markets Limited toll-free at 1-800-831-9146, J.P. Morgan Securities plc toll-free at +44-207-134-2468 (non-U.S. investors) or J.P. Morgan Securities LLC collect at 1-212-834-4533 (U.S. investors).

This communication is not being made, and has not been approved, by an authorized person for the purposes of Section 21 of the Financial Services and Markets Act 2000, as amended (the “FSMA”). Accordingly, this communication is not being distributed to, and must not be passed on to, the general public in the United Kingdom. This communication is for distribution only to persons who (i) have professional experience in matters relating to investments and who fall within the definition of investment professionals (as defined in Article 19(5) of the Financial Services and Markets Act 2000 (Financial Promotion) Order 2005, as amended (the “Financial Promotion Order”)), (ii) fall within Article 49(2)(a) to (d) of the Financial Promotion Order, (iii) are outside the United Kingdom, or (iv) are any other persons to whom it may otherwise lawfully be communicated or distributed under the Financial Promotion Order (all such persons together being referred to as “relevant persons”). This communication must not be acted on or relied on, in the United Kingdom, by persons who are not relevant persons.