DOCUMENTS FILED OR TO BE FILED WITH THE SEC IN CONNECTION WITH THE PROPOSED TRANSACTION, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THOSE DOCUMENTS, BECAUSE THEY WILL CONTAIN IMPORTANT
INFORMATION ABOUT M&T, PEOPLES UNITED AND THE PROPOSED TRANSACTION. Investors will be able to obtain a free copy of the registration statement, including the joint proxy statement/prospectus, as well as other relevant documents filed with
the SEC containing information about M&T and Peoples United, without charge, at the SECs website (http://www.sec.gov). Copies of the registration statement, including the joint proxy statement/prospectus, and the filings with the SEC
that will be incorporated by reference in the joint proxy statement/prospectus can also be obtained, without charge, by directing a request to Investor Relations, M&T Bank Corporation, One M&T Plaza, Buffalo, New York 14203, telephone (716) 635-4000, or Steven Bodakowski, Peoples United Financial, Inc., 850 Main Street, Bridgeport, Connecticut 06604, telephone (203) 338-4202.
Participants in the Solicitation
M&T,
Peoples United and certain of their respective directors, executive officers and employees may be deemed to be participants in the solicitation of proxies in respect of the proposed transaction under the rules of the SEC. Information regarding
M&Ts directors and executive officers is available in its definitive proxy statement, which was filed with the SEC on March 8, 2021, and certain of its Current Reports on Form 8-K. Information
regarding Peoples Uniteds directors and executive officers is available in its Annual Report on Form 10-K for the year ended December 31, 2020, which was filed with the SEC on March 1,
2021, as amended by an amendment to the Form 10-K filed with the SEC on March 30, 2021, and certain of its Current Reports on Form 8-K. Other information regarding
the participants in the solicitation of proxies in respect of the proposed transaction and a description of their direct and indirect interests, by security holdings or otherwise, will be contained in the joint proxy statement/prospectus and other
relevant materials to be filed with the SEC. Free copies of these documents, when available, may be obtained as described in the preceding paragraph.
Forward-Looking Statements
This communication
includes forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as
amended. Forward-looking statements are based on current expectations, estimates and projections about M&Ts and Peoples Uniteds businesses, beliefs of M&Ts and Peoples Uniteds management and assumptions
made by M&Ts and Peoples Uniteds management. Any statement that does not describe historical or current facts is a forward-looking statement, including statements regarding the expected timing, completion and effects of the
proposed transactions and M&Ts and Peoples Uniteds expected financial results, prospects, targets, goals and outlook. Forward-looking statements are typically identified by words such as believe, expect,
anticipate, intend, target, estimate, continue, positions, prospects or potential, by future conditional verbs such as will,
would, should, could, or may, or by variations of such words or by similar expressions. These statements are not guarantees of future performance and involve certain risks, uncertainties and
assumptions (Future Factors) which are difficult to predict. Therefore, actual outcomes and results may differ materially from what is expressed or forecasted in such forward-looking statements.