3M CO (MMM) · Insider Trading (Form 4) SEC Filing

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-07-22 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: 2026-07-22 | Code: M (Exercise of derivative) Shares: +7,669 | Price: $154.69 Total Value: $1,186,317.61 Shares Owned After: 51,448.9933 | Ownership: D (Direct) [Transaction #2] Security: Common Stock Date: 2026-07-22 | Code: S (Open market sale) Shares: -7,669 | Price: $171.20 Total Value: $1,312,932.80 Shares Owned After: 43,779.9933 | Ownership: D (Direct) Footnotes: [F1] Includes dividend share equivalents, accrued quarterly, pursuant to 3M's Deferred Compensation Plan. --- Derivative Transactions --- [Transaction #1] Security: Non-qualified Stock Option (Right to Buy) Date: 2026-07-22 | Code: M (Exercise of derivative) Shares: -7,669 | Price: $0.00 Exercisable: N/A | Expires: 2027-02-06 Shares Owned After: 0 | Ownership: D (Direct) --- Footnotes (Complete Index) --- F1: Includes dividend share equivalents, accrued quarterly, pursuant to 3M's Deferred Compensation Plan. --- Signature --- /s/ Patricia L. Meagher, attorney-in-fact for Kevin H. Rhodes (2026-07-23)