Company: CMA
Filing Date: 2025-12-18
Form Type: 425
Source: 0001193125-25-323441
Chunk: 2

Company: COMERICA INC
Filing Date: 2025-12-18
Form: 425
Chunk 2
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 Merger Agreement.

Litigation Related to the Merger

As of the date hereof, Comerica has received several demand letters from purported stockholders (the “Demand Letters”) of Comerica and, to
Comerica’s knowledge, two complaints have been filed with respect to the Merger. The complaints are captioned: Holdco Opportunities Fund V, L.P. v. Comerica Incorporated et al (Del. Chancery Court, C.A. No.
2025-1360-MTX) and Eric Miller v. Comerica Incorporated et al (N.Y. Supreme Court) (collectively referred to as the “Stockholder Actions”).

The Demand Letters and the Stockholder Actions allege that, among other things, the definitive proxy statement contains certain disclosure deficiencies and/or
incomplete information regarding the Mergers. Although the outcome of, or estimate of the possible loss or range of loss, from these matters cannot be predicted, Comerica believes that the allegations contained in the Demand Letters and the
Stockholder Actions are without merit.

Comerica believes that no supplemental disclosures are required under applicable laws; however, in order to avoid
the risk of the Demand Letters and the Stockholder Actions delaying the Mergers and minimize the potential expense associated therewith, and without admitting any liability or wrongdoing, Comerica is voluntarily making certain disclosures below that
supplement those contained in the definitive proxy statement. These disclosures, and disclosures on certain other matters, are provided in this Current Report on Form 8-K. Nothing in this Current Report on
Form 8-K shall be deemed an admission of the legal necessity or materiality under applicable laws of any of the disclosures set forth herein. To the contrary, Comerica specifically denies all allegations in
the Demand Letters and the Stockholder Actions, including that any additional disclosure was or is required.

It is possible that additional, similar
demand letters or complaints may be received or filed, or that the Stockholder Actions may be amended. Comerica does not intend to announce the receipt or filing of each additional, similar demand letter or complaint, or of any amended complaint.

SUPPLEMENT TO THE DEFINITIVE PROXY STATEMENT This supplemental information to the definitive proxy statement should be read in conjunction with the definitive proxy statement, which should be read in its entirety, including all risk factors and cautionary notes contained therein. All page references are to pages in the definitive proxy statement, and terms used below, unless otherwise defined, have the meanings set forth