3m (MMM) 4: Rhodes Kevin H bought 176 shares at $162.12 on 2026-10-07;… (Oct 9, 2026)

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-10-07 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: 3M CO (MMM) CIK: 0000066740 --- Reporting Owner --- Name: Rhodes Kevin H CIK: 0001901300 Role: Officer (EVP, Chief Legal Off & Secret) --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-10-07 | Code: M (Exercise of derivative) Shares: +176 | Price: $162.12 Total Value: $28,533.12 Shares Owned After: 44,028.0608 | Ownership: D (Direct) [Transaction #2] Security: Common Stock Date: 2026-10-07 | Code: F (Payment of exercise/tax) Shares: -176 | Price: $162.12 Total Value: $28,533.12 Shares Owned After: 43,852.0608 | Ownership: D (Direct) Footnotes: [F1] Shares withheld for FICA tax for retirement eligible executives. [F2] Includes dividend share equivalents, accrued quarterly, pursuant to 3M's Deferred Compensation Plan. --- Derivative Transactions --- [Transaction #1] Security: Restricted Stock Units Date: 2026-10-07 | Code: M (Exercise of derivative) Shares: -176 | Price: $0.00 Shares Owned After: 4,067 | Ownership: D (Direct) Footnotes: [F3] Each restricted stock unit represents a contingent right to receive one share of 3M common stock. [F4] The restricted stock units vest 100% three years from the grant date. [F4] The restricted stock units vest 100% three years from the grant date. --- Footnotes (Complete Index) --- F1: Shares withheld for FICA tax for retirement eligible executives. F2: Includes dividend share equivalents, accrued quarterly, pursuant to 3M's Deferred Compensation Plan. F3: Each restricted stock unit represents a contingent right to receive one share of 3M common stock. F4: The restricted stock units vest 100% three years from the grant date. --- Signature --- /s/ Patricia L. Meagher, attorney-in-fact for Kevin H. Rhodes (2026-10-09)