3m (MMM)

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-09-01 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: 3M CO (MMM) CIK: 0000066740 --- Reporting Owner --- Name: Cunningham Jennifer A. CIK: 0002147523 Role: Officer (EVP & Chief HR Officer) --- Derivative Transactions --- [Transaction #1] Security: Restricted Stock Units Date: 2026-09-01 | Code: A (Grant or award) Shares: +7,049 Shares Owned After: 7,049 | Ownership: D (Direct) Footnotes: [F1] Each restricted stock unit represents a contingent right to receive one share of 3M common stock. [F1] Each restricted stock unit represents a contingent right to receive one share of 3M common stock. [F2] The restricted stock units vest in three equal annual installments beginning on the date six months from the grant date. [F2] The restricted stock units vest in three equal annual installments beginning on the date six months from the grant date. --- Footnotes (Complete Index) --- F1: Each restricted stock unit represents a contingent right to receive one share of 3M common stock. F2: The restricted stock units vest in three equal annual installments beginning on the date six months from the grant date. --- Signature --- /s/ /s/ Patricia L. Meagher, attorney-in-fact for Jennifer A. Cunningham (2026-09-03)