3M CO - Ownership Filing

This filing is an Exhibit Index 24.1, a Power of Attorney, related to a Form 3 filing for 3M CO. The reporting owner is Jennifer A. Cunningham, identified by CIK 0002147523, who is the EVP & Chief HR Officer of 3M CO. The filing is dated August 14, 2026, with the period of report being August 10, 2026. The power of attorney is signed by Patricia L. Meagher on behalf of Jennifer A. Cunningham.