Power of Attorney for Kristina E. Janssens

The filing is a Power of Attorney document for Kristina E. Janssens, SEVP - Chief Risk Officer of Comerica Inc. The document appoints Von E. Hays, Nicole V. Gersch, Steven Franklin, and Nina K. Ramachandran as attorneys-in-fact to execute Forms 3, 4, and 5 in accordance with Section 16(a) of the Securities Exchange Act of 1934, and Form 144 under Rule 144 of the Securities Act of 1933. The attorneys-in-fact are also authorized to perform any necessary actions related to these filings. The Power of Attorney remains in effect until six months after Janssens' termination, removal, resignation, or retirement from Comerica Inc., unless revoked earlier. The document was executed on September 16, 2025, and includes a notarization.