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

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-07-01 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: 3M CO (MMM) CIK: 0000066740 --- Reporting Owner --- Name: Bauer Wendy A CIK: 0002025856 Role: Officer (Group President) --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-07-01 | Code: M (Exercise of derivative) Shares: +7,952 | Price: $159.96 Total Value: $1,272,001.92 Shares Owned After: 12,644 | Ownership: D (Direct) [Transaction #2] Security: Common Stock Date: 2026-07-01 | Code: F (Payment of exercise/tax) Shares: -3,558 | Price: $159.96 Total Value: $569,137.68 Shares Owned After: 9,086 | Ownership: D (Direct) --- Derivative Transactions --- [Transaction #1] Security: Restricted Stock Units Date: 2026-07-01 | Code: M (Exercise of derivative) Shares: -7,952 | Price: $0.00 Shares Owned After: 0 | Ownership: D (Direct) Footnotes: [F1] Each restricted stock unit represents a contingent right to receive one share of 3M common stock. [F2] The restricted stock units will vest in two equal installments beginning on July 1, 2025. [F2] The restricted stock units will vest in two equal installments beginning on July 1, 2025. --- 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 will vest in two equal installments beginning on July 1, 2025. --- Signature --- /s/ Patricia L. Meagher, attorney-in-fact for Wendy A. Bauer (2026-07-02)