UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

Commission file number 1-9861

M&T BANK CORPORATION

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code: (716)842-5445

Securities registered pursuant to Section 12(b) of the Act:

Securities registered pursuant to Section 12(g) of the Act:

8.234% Capital Securities of M&T Capital Trust I

(and the Guarantee of M&T Bank Corporation with respect thereto)

(Title of class)

8.234% Junior Subordinated Debentures of

M&T Bank Corporation

(Title of class)

     Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months, and (2) has been subject to such filing requirements for the past 90 days. Yes þ     No o

      Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. o

      Indicate by check mark whether the registrant is an accelerated filer (as defined in Rule 12b-2 of the Act). Yes þ     No o

      Aggregate market value of the Common Stock, $0.50 par value, held by non-affiliates of the registrant, computed by reference to the closing price as of the close of business on June 30, 2004: $6,631,579,067.

      Number of shares of the Common Stock, $0.50 par value, outstanding as of the close of business on January 31, 2005: 115,075,435 shares.

Documents Incorporated By Reference:

M&T BANK CORPORATION

Form 10-K

For the year ended December 31, 2004

CROSS-REFERENCE SHEET

PART I

      M&T Bank Corporation (“Registrant” or “M&T”) is a New York business corporation which is registered as a bank holding company under the Bank Holding Company Act of 1956, as amended (“BHCA”) and under Article III-A of the New York Banking Law (“Banking Law”). The principal executive offices of the Registrant are located at One M&T Plaza, Buffalo, New York 14203. The Registrant was incorporated in November 1969. The Registrant and its direct and indirect subsidiaries are collectively referred to herein as the “Company.” As of December 31, 2004 the Company had consolidated total assets of $52.9 billion, deposits of $35.4 billion and stockholders’ equity of $5.7 billion. The Company had 11,785 full-time and 1,586 part-time employees as of December 31, 2004.

      At December 31, 2004, the Registrant had two wholly owned bank subsidiaries: M&T Bank and M&T Bank, National Association (“M&T Bank, N.A.”). The banks collectively offer a wide range of commercial banking, trust and investment services to their customers. At December 31, 2004, M&T Bank represented 99% of consolidated assets of the Company.

      The Company from time to time considers acquiring banks, thrift institutions, branch offices of banks or thrift institutions, or other businesses within markets currently served by the Company or in other locations that would complement the Company’s business or its geographic reach. The Company has pursued acquisition opportunities in the past, continues to review different opportunities, including the possibility of major acquisitions, and intends to continue this practice.

Acquisition of Allfirst Financial Inc.

      On April 1, 2003, M&T completed the acquisition of Allfirst Financial Inc. (“Allfirst”), a bank holding company headquartered in Baltimore, Maryland. Acquired assets on April 1, 2003 totaled $16 billion, including $10 billion of loans and leases, liabilities assumed aggregated $14 billion, including $11 billion of deposits, and $2 billion was added to stockholders’ equity. Allfirst had a strong banking presence in Maryland and central Pennsylvania. Allfirst and its subsidiaries served customers through a network of 269 full service offices and approximately 600 ATMs in the mid-Atlantic region of the United States. Prior to April 1, 2003, Allied Irish Banks, p.l.c. (“AIB”) controlled 100% of the voting power of Allfirst’s outstanding capital stock.

      Allfirst’s primary subsidiary bank was Allfirst Bank, which operated in Maryland, Pennsylvania, Virginia, Delaware and the District of Columbia. Allfirst Bank’s bank and non-bank subsidiaries offered a variety of financial services, including trust and asset management, leasing, discount brokerage services, sales of mutual funds and annuities, investment advisory services, reinsurance, brokerage, mortgage banking and community development. One of the most notable Allfirst non-banking activities was its trust and asset management business with $15.7 billion in assets under management. Allied Investment Advisors, the main institutional advisory subsidiary of Allfirst, managed over $10 billion in assets from 175 institutions.

      Under the terms of the Agreement and Plan of Reorganization dated September 26, 2002 by and among AIB, Allfirst and M&T (the “Reorganization Agreement”), M&T combined with Allfirst through the acquisition of all of the issued and outstanding Allfirst stock in exchange for 26,700,000 shares of M&T common stock and $886,107,000 in cash paid to AIB. Immediately thereafter, Allfirst merged with and into M&T, with M&T being the surviving company. Allfirst Bank merged with and into M&T Bank, with M&T Bank being the surviving bank. The combined company had branches in six states and the District of Columbia.

      There are several M&T corporate governance changes that have resulted from the transaction. While it maintains a significant ownership in M&T, AIB will have representation on the M&T board, the M&T Bank board and key M&T board committees and will have certain protections of its rights as a substantial M&T shareholder. In addition, AIB will have rights that will facilitate its ability to maintain its proportionate ownership position in M&T. M&T will also have representation on the AIB board while AIB

remains a significant shareholder. The following is a description of the ongoing relationship between M&T and AIB that resulted from the Allfirst acquisition. The following description is qualified in its entirety by the terms of the Reorganization Agreement. The Reorganization Agreement was filed with the Securities Exchange Commission on October 3, 2002 as Exhibit 2 to the Current Report on Form 8-K of M&T dated September 26, 2002.

Board of Directors; Management

      At December 31, 2004, AIB held approximately 23.2% of the issued and outstanding shares of M&T common stock. In defining their relationship after the acquisition, M&T and AIB negotiated certain agreements regarding share ownership and corporate governance issues such as board representation, with the number of AIB’s representatives on the M&T and M&T Bank boards of directors being dependent upon the amount of M&T common stock held by AIB. M&T has the right to one seat on the AIB board of directors until AIB no longer holds at least 15% of the outstanding shares of M&T common stock. Pursuant to the Reorganization Agreement, AIB has the right to name four members to serve on the Boards of Directors of M&T and M&T Bank, each of whom must be reasonably acceptable to M&T (collectively, the “AIB Designees”). Further, one of the AIB Designees will serve on each of the Executive Committee, Nomination, Compensation and Governance Committee, and Audit Committee (or any committee or committees performing comparable functions) of the M&T board of directors. In order to serve, the AIB Designees must meet the requisite independence and expertise requirements prescribed under applicable law or stock exchange rules. In addition, the Reorganization Agreement provides that the board of directors of M&T Bank will include four members designated by AIB, each of whom must be reasonably acceptable to M&T.

      As long as AIB remains a significant shareholder of M&T, AIB will have representation on the boards of directors of both M&T and M&T Bank as follows:

      The AIB Designees at December 31, 2004 were Michael D. Buckley, Derek C. Hathaway, Gary Kennedy and Eugene J. Sheehy. Mr. Buckley serves as a member of the Executive Committee and the

Nomination, Compensation and Governance Committee, and Mr. Hathaway serves as a member of the Audit Committee. Robert G. Wilmers, Chairman of the Board, President and Chief Executive Officer of M&T, is a member of the AIB board of directors.

Amendments to M&T’s Bylaws

      Pursuant to the Reorganization Agreement, M&T has amended and restated its bylaws. The following is a description of the amended bylaws:

      The amended bylaws provide that until the Sunset Date, the M&T board of directors may not take or make any recommendation to M&T’s shareholders regarding the following actions without the approval of the Executive Committee, including the approval of the AIB Designee serving on the committee:

      The amended bylaws also provide that until the Sunset Date, the M&T board of directors may only take or make any recommendation to M&T’s shareholders regarding the following actions if the action has been approved by the Executive Committee (in the case of the first four items and sixth item below) or Nomination and Compensation Committee (in the case of the fifth item below) and the members of such committee not voting in favor of the action do not include the AIB Designee serving on such committee and at least one other member of the committee who is not an AIB Designee:

      The provisions of the bylaws described above may not be amended or repealed without the unanimous approval of the entire M&T board of directors or the approval of the holders of not less than 80% of the outstanding shares of M&T common stock. The provisions of the bylaws described above will automatically terminate when AIB holds less than 5% of the outstanding shares of M&T common stock.

Investment Parameters

      The Reorganization Agreement provides that through the second anniversary of the Sunset Date, without prior written consent of the M&T board of directors, AIB will not, directly or indirectly, acquire or offer to acquire (except by way of stock dividends, offerings made available to M&T shareholders generally, or pursuant to compensation plans) more than 25% of the then outstanding shares of M&T common stock. Further, during this period, AIB and AIB’s subsidiaries have agreed not to participate in any proxy solicitation or to otherwise seek to influence any M&T shareholder with respect to the voting of any shares of M&T common stock for the approval of any shareholder proposals.

      The Reorganization Agreement also provides that, during this period, AIB will not make any public announcement with respect to any proposal or offer by AIB or any AIB subsidiary with respect to certain transactions (such as mergers, business combinations, tender or exchange offers, the sale or purchase of securities or similar transactions) involving M&T or any of the M&T subsidiaries. The Reorganization Agreement also provides that, during this period, AIB may not subject any shares of M&T common stock to any voting trust or voting arrangement or agreement and will not execute any written consent as a shareholder with respect to the M&T common stock.

      The Reorganization Agreement also provides that, during this period, AIB will not seek to control or influence the management, the board of directors or policies of M&T, including through communications with shareholders of M&T or otherwise, except through non-public communications with the directors of M&T, including the AIB Designees.

      These restrictions on AIB will no longer apply if a third party commences or announces its intention to commence a tender offer or an exchange offer and, within a reasonable time, the M&T board of directors either does not recommend that shareholders not accept the offer or fails to adopt a shareholders rights plan, or if M&T or M&T Bank becomes subject to any regulatory capital directive or becomes an institution in “troubled” condition under applicable banking regulations. However, in the event the tender offer or exchange offer is not commenced or consummated in accordance with its terms, the restrictions on AIB described above will thereafter continue to apply.

Anti-Dilution Protections

      M&T has agreed that until the Sunset Date, in the event M&T issues shares of M&T stock (other than certain issuances to employees pursuant to option and benefit plans), subject to applicable law and regulatory requirements, AIB will have the right to purchase at fair market value up to the number of shares of M&T common stock required to increase or maintain its equity interest in M&T to 22.5% of the then outstanding M&T common stock.

      M&T has also agreed that until the Sunset Date, in connection with any issuance of M&T stock pursuant to employee option or benefit plans, M&T will as soon as reasonably practicable, taking into account applicable law, regulatory capital requirements, capital planning and risk management, take such necessary actions so that AIB’s proportionate ownership of M&T common stock is not reduced as a result of such issuances, including by funding such issuances through purchases of M&T common stock in the open market or by undertaking share repurchase programs.

Sale of M&T Common Stock; Right of First Refusal in Certain Circumstances

      The M&T common stock issued to AIB in connection with the Allfirst acquisition was not registered under the Securities Act of 1933 (the “Securities Act”) and may only be disposed of by AIB pursuant to an effective registration statement or pursuant to an exemption from registration under the Securities Act and subject to the provisions of the Reorganization Agreement.

      M&T and AIB have entered into a registration rights agreement that provides that upon AIB’s request, M&T will file a registration statement relating to all or a portion of AIB’s shares of M&T common stock providing for the sale of such shares by AIB from time to time on a continuous basis pursuant to Rule 415 under the Securities Act, provided that M&T need only effect one such “shelf registration” in any

12-month period. In addition, the registration rights agreement provides that AIB is entitled to demand registration under the Securities Act of all or part of its shares of M&T stock, provided that M&T is not obligated to effect two such “demand registrations” in any 12-month period. Any demand or shelf registration must cover no less than one million shares.

      The registration rights agreement further provides that in the event M&T proposes to file a registration statement other than pursuant to a shelf registration or demand registration or Forms S-8 or S-4, for an offering and sale of shares by M&T in an underwritten offering or an offering and sale of shares on behalf of one or more selling shareholders, M&T must give AIB notice at least 15 days prior to the anticipated filing date, and AIB may request that all or a portion of its M&T common shares be included in the registration statement. M&T will honor the request, unless the managing underwriter advises M&T in writing that in its opinion the inclusion of all shares requested to be included by M&T, the other selling shareholders, if any, and AIB would materially and adversely affect the offering, in which case M&T may limit the number of shares included in the offering to a number that would not reasonably be expected to have such an effect. In such event, the number of shares to be included in the registration statement shall first include the number of shares requested to be included by M&T and then the shares requested by other selling shareholders, including AIB, on a pro rata basis according to the number of shares requested to be included in the registration statement by each shareholder.

      As long as AIB holds 5% or more of the outstanding shares of M&T common stock, AIB will not dispose of any of its shares of M&T common stock except, subject to the terms and conditions of the Reorganization Agreement and applicable law, in a widely dispersed public distribution; a private placement in which no one party acquires the right to purchase more than 2% of the outstanding shares of M&T common stock; an assignment to a single party (such as a broker or investment banker) for the purpose of conducting a widely dispersed public distribution on AIB’s behalf; pursuant to Rule 144 under the Securities Act; pursuant to a tender or exchange offer to M&T’s shareholders not opposed by M&T’s board of directors, or open market purchase programs made by M&T; with the consent of M&T, which consent will not be unreasonably withheld, to a controlled subsidiary of AIB; or pursuant to M&T’s right of first refusal as described below.

      The Reorganization Agreement provides that until AIB no longer holds at least 5% of the outstanding shares of M&T common stock, if AIB wishes to sell or otherwise transfer any of its shares of M&T common stock other than as described in the preceding paragraph, AIB must first submit an offer notice to M&T identifying the proposed transferee and setting forth the proposed terms of the transaction, which shall be limited to sales for cash, cash equivalents or marketable securities. M&T will have the right, for 20 days following receipt of an offer notice from AIB, to purchase all (but not less than all) of the shares of M&T common stock that AIB wishes to sell, on the proposed terms specified in the offer notice. If M&T declines or fails to respond to the offer notice within 20 days, AIB may sell all or a portion of the M&T shares specified in the offer notice to the proposed transferee at a purchase price equal to or greater than the price specified in the offer notice, at any time during the three months following the date of the offer notice, or, if prior notification to or approval of the sale by the Federal Reserve Board or another regulatory agency is required, AIB shall pursue regulatory approval expeditiously and the sale may occur on the first date permitted under applicable law.

Certain Post-Closing Bank Regulatory Matters

      The Board of Governors of the Federal Reserve System (“Federal Reserve Board”) deems AIB to be M&T’s bank holding company for purposes of the BHCA. In addition, the New York Banking Superintendent (“Banking Superintendent”) deems AIB to be M&T’s bank holding company for purposes of Article III-A of the Banking Law. Among other things, this means that, should M&T propose to make an acquisition or engage in a new type of activity that requires the submission of an application or notice to the Federal Reserve Board or the Banking Superintendent, AIB, as well as M&T, may also be required to file an application or notice. The Reorganization Agreement generally provides that AIB will make any applications, notices or filings that M&T determines to be necessary or desirable. The Reorganization Agreement also requires AIB not to take any action that would have a material adverse effect on M&T and to advise

M&T prior to entering into any material transaction or activity. These provisions of the Reorganization Agreement would no longer apply if AIB ceased to be M&T’s bank holding company and also was not otherwise considered to control M&T for purposes of the BHCA.

      Pursuant to the Reorganization Agreement, if, as a result of any administrative enforcement action under Section 8 of the Federal Deposit Insurance Act (the “FDI Act”), memorandum of understanding, written agreement, supervisory letter or any other action or determination of any regulatory agency relating to the status of AIB (but not relating to the conduct of M&T or any subsidiary of M&T), M&T or M&T Bank also becomes subject to such an action, memorandum, agreement or letter that relates to M&T or any M&T subsidiary, or experiences any fact, event or circumstance that affects M&T’s regulatory status or compliance, and that in either case would be reasonably likely to create a material burden on M&T or to cause any material adverse economic or operating consequences to M&T or an M&T subsidiary (a “Material Regulatory Event”), then M&T will notify AIB thereof in writing as promptly as practicable. Should AIB fail to cure the Material Regulatory Event within 90 days following the receipt of such notice, AIB will, as promptly as practicable but in no event later than 30 days from the end of the cure period, take any and all such actions (with the reasonable cooperation of M&T as requested by AIB) as may be necessary or advisable in order that it no longer has “control” of M&T for purposes of the BHCA, including, if necessary, by selling some or all of its shares of M&T common stock (subject to the right of first refusal provisions of the Reorganization Agreement) and divesting itself as required of its board and committee representation and governance rights as set forth in the Reorganization Agreement. If, at the end of such 30-day period, the Material Regulatory Event is continuing and AIB has not terminated its control of M&T, then M&T will have the right to repurchase, at fair market value, such amount of the M&T common stock owned by AIB as would result in AIB holding no less than 4.9% of the outstanding shares of M&T common stock, pursuant to the procedures detailed in the Reorganization Agreement.

      As long as AIB is considered to “control” M&T for purposes of the BHCA or the federal Change in Bank Control Act, if AIB acquires any insured depository institution with total assets greater than 25% of the assets of M&T’s largest insured depository institution subsidiary, then within two years AIB must terminate its affiliation with the insured depository institution or take such steps as may be necessary so that none of M&T’s bank subsidiaries would be subject to “cross guarantee” liability for losses incurred if the institution AIB acquired potentially were to fail. This liability applies under the FDI Act to insured depository institutions that are commonly controlled. The actions AIB would take could include disposing of shares of M&T common stock and/or surrendering its representation or governance rights. Also, if such an insured depository institution that is controlled by AIB and of the size described in the first sentence of this paragraph that would be considered to be commonly controlled with M&T’s insured depository institution subsidiaries fails to meet applicable requirements to be “adequately capitalized” under applicable U.S. banking laws, then AIB will have to take the actions described in the previous sentence no later than 180 days after the date that the institution failed to meet those requirements, unless the institution is sooner returned to “adequately capitalized” status.

Other Acquisitions

      In addition to the acquisition of Allfirst, the Company has experienced significant growth through other recent acquisitions. The following table summarizes the loans, deposits and branches acquired in acquisition transactions over the five-year period ending December 31, 2004:

Subsidiaries

      M&T Bank is a banking corporation that is incorporated under the laws of the State of New York. M&T Bank is a member of the Federal Reserve System and the Federal Home Loan Bank System, and its deposits are insured by the Federal Deposit Insurance Corporation (“FDIC”) up to applicable limits. M&T acquired all of the issued and outstanding shares of the capital stock of M&T Bank in December 1969. The stock of M&T Bank represents a major asset of M&T. M&T Bank operates under a charter granted by the State of New York in 1892, and the continuity of its banking business is traced to the organization of the Manufacturers and Traders Bank in 1856. The principal executive offices of M&T Bank are located at One M&T Plaza, Buffalo, New York 14203. As of December 31, 2004, M&T Bank had 662 banking offices located throughout New York State, Pennsylvania, Maryland, Delaware, Virginia, West Virginia and the District of Columbia, plus a branch in George Town, Cayman Islands. As of December 31, 2004, M&T Bank had consolidated total assets of $52.4 billion, deposits of $35.3 billion and stockholder’s equity of $6.2 billion. The deposit liabilities of M&T Bank are insured by the FDIC through either its Bank Insurance Fund (“BIF”) or its Savings Association Insurance Fund (“SAIF”). Of M&T Bank’s $31.8 billion in assessable deposits at December 31, 2004, 89% were assessed as BIF-insured deposits and the remainder as SAIF-insured deposits. As a commercial bank, M&T Bank offers a broad range of financial services to a diverse base of consumers, businesses, professional clients, governmental entities and financial institutions located in its markets. Lending is largely focused on consumers residing in New York State, Pennsylvania, Maryland, northern Virginia and Washington, D.C., and on small and medium-size businesses based in those areas. In addition, the Company conducts lending activities in other states through various subsidiaries. M&T Bank and certain of its subsidiaries also offer commercial mortgage loans secured by income producing properties or properties used by borrowers in a trade or business. Additional financial services are provided through other operating subsidiaries of the Company.

      M&T Bank, N.A., a national banking association and a member of the Federal Reserve System and the FDIC, commenced operations on October 2, 1995. The deposit liabilities of M&T Bank, N.A. are insured by the FDIC through the BIF. The main office of M&T Bank, N.A. is located at 48 Main Street, Oakfield, New York 14125. M&T Bank, N.A. offers selected deposit and loan products on a nationwide basis, primarily through direct mail and telephone marketing techniques. M&T Bank, N.A. is also a licensed insurance agency, and offered insurance products primarily through the banking offices of M&T Bank until August 1, 2004, when the business was transferred to M&T Securities, Inc., a wholly owned subsidiary of M&T Bank. As of December 31, 2004, M&T Bank, N.A. had total assets of $367 million, deposits of $240 million and stockholder’s equity of $83 million.

      M&T Life Insurance Company (“M&T Life Insurance”), a wholly owned subsidiary of M&T, was incorporated as an Arizona business corporation in January 1984. M&T Life Insurance is a captive credit reinsurer which reinsures credit life and accident and health insurance purchased by the Company’s consumer loan customers. As of December 31, 2004, M&T Life Insurance had assets of $35 million and stockholders’ equity of $26 million. M&T Life Insurance recorded revenues of $3 million during 2004. Headquarters of M&T Life Insurance are located at 101 North First Avenue, Phoenix, Arizona 85003.

      M&T Credit Services, LLC (“M&T Credit”), a wholly owned subsidiary of M&T Bank, is a New York limited liability company formed in June 2004. Effective September 29, 2004, M&T Credit Corporation, a wholly owned subsidiary of M&T Bank, was merged with and into M&T Credit. M&T Credit is a credit and leasing company offering consumer loans and commercial loans and leases. Its headquarters are located at M&T Center, One Fountain Plaza, Buffalo, New York 14203, with offices in Delaware, Massachusetts and Pennsylvania. As of December 31, 2004, M&T Credit had assets of $4.3 billion and stockholder’s equity of $384 million. M&T Credit and M&T Credit Corporation recorded $204 million of combined revenue during 2004.

      M&T Investment Company of Delaware, Inc. (“M&T Investment”), is an indirect subsidiary of M&T Bank and a wholly owned subsidiary of M&T Investment Company, Inc. M&T Investment is a Delaware investment company that was formed on November 17, 2004 and shortly thereafter received substantially all of the net assets of M&T Investment Company, Inc. As a result of that transfer, M&T Investment owns

all of the outstanding common stock and 88.0% of the preferred stock of M&T Real Estate Trust. As of December 31, 2004, M&T Investment had assets and stockholder’s equity of approximately $11.4 billion. Excluding dividends from M&T Real Estate Trust, M&T Investment and M&T Investment Company, Inc., recorded $10 million of combined revenue in 2004. The headquarters of M&T Investment are located at 501 Silverside Road, Wilmington, Delaware 19809. M&T Investment Company, Inc. is a wholly owned subsidiary of M&T Bank that was incorporated as a New Jersey business corporation. M&T Investment Company, Inc. owns 100% of the common stock of M&T Investment. Except for that investment holding, M&T Investment Company, Inc. is largely inactive.

      M&T Lease, LLC (“M&T Lease”), a wholly owned subsidiary of M&T Bank, is a Delaware limited liability company formed in June 2004. Effective September 1, 2004, Highland Lease Corporation, a wholly owned subsidiary of M&T Bank, was merged with and into M&T Lease. M&T Lease is a consumer leasing company with headquarters at One M&T Plaza, Buffalo, New York 14203. As of December 31, 2004, M&T Lease had assets of $231 million and stockholder’s equity of $37 million. M&T Lease and Highland Lease Corporation recorded $25 million of combined revenue during 2004.

      M&T Mortgage Corporation (“M&T Mortgage”), a wholly owned mortgage banking subsidiary of M&T Bank, was incorporated as a New York business corporation in November 1991. M&T Mortgage’s principal activities are comprised of the origination of residential mortgage loans and providing residential mortgage loan servicing to M&T Bank, M&T Bank, N.A. and others. M&T Mortgage operates throughout New York State, Maryland and Pennsylvania, and also maintains branch offices in Arizona, California, Colorado, Idaho, Nevada, New Jersey, Ohio, Oregon, Utah, Virginia and Washington. M&T Mortgage had assets of $1.9 billion and stockholder’s equity of $307 million as of December 31, 2004, and recorded approximately $195 million of revenue during 2004. Residential mortgage loans serviced by M&T Mortgage for non-affiliates totaled $14.9 billion at December 31, 2004. The headquarters of M&T Mortgage are located at M&T Center, One Fountain Plaza, Buffalo, New York 14203.

      M&T Mortgage Reinsurance Company, Inc. (“M&T Reinsurance”), a wholly owned subsidiary of M&T Bank, was incorporated as a Vermont business corporation in July 1999. M&T Reinsurance enters into reinsurance contracts with insurance companies who insure against the risk of a mortgage borrower’s payment default in connection with M&T Mortgage-related mortgage loans. M&T Reinsurance receives a share of the premium for those policies in exchange for accepting a portion of the insurer’s risk of borrower default. M&T Reinsurance had assets of approximately $13 million and stockholder’s equity of approximately $12 million as of December 31, 2004, and recorded approximately $3 million of revenue during 2004. M&T Reinsurance’s principal and registered office is at 148 College Street, Burlington, Vermont 05401.

      M&T Real Estate Trust (“M&T Real Estate”) is a Maryland Real Estate Investment Trust and is a subsidiary of M&T Investment. M&T Real Estate was formed through the merger of two separate subsidiaries, but traces its origin to M&T Real Estate, Inc., a New York business corporation incorporated in July 1995. M&T Real Estate engages in commercial real estate lending and provides loan servicing to M&T Bank and others. As of December 31, 2004, M&T Real Estate had assets of $10.9 billion, common stockholders’ equity of $10.7 billion, and preferred stockholders’ equity, consisting of 9% fixed-rate preferred stock (par value $1,000), of $1 million. All of the outstanding common stock and 88.0% of the preferred stock of M&T Real Estate is owned by M&T Investment. The remaining 12.0% of M&T Real Estate’s outstanding preferred stock is owned by officers or former officers of the Company. M&T Real Estate recorded $599 million of revenue in 2004. Commercial mortgage loans serviced for non-affiliates by M&T Real Estate totaled $850 million at December 31, 2004. The headquarters of M&T Real Estate are located at M&T Center, One Fountain Plaza, Buffalo, New York 14203.

      M&T Realty Capital Corporation (“M&T Realty Capital”), a wholly owned subsidiary of M&T Bank, was incorporated as a Maryland corporation in October 1973. M&T Realty Capital engages in multi-family commercial real estate lending and provides loan servicing to purchasers of the loans it originates. As of December 31, 2004 M&T Realty Capital serviced $3.2 billion of commercial mortgage loans for non-affiliates and had assets of $100 million and stockholder’s equity of $21 million. M&T Realty Capital

recorded revenues of $24 million in 2004. The headquarters of M&T Realty Capital are located at 25 South Charles Street, Baltimore, Maryland 21202.

      M&T Securities, Inc. (“M&T Securities”) is a wholly owned subsidiary of M&T Bank that was incorporated as a New York business corporation in November 1985. M&T Securities is registered as a broker/dealer under the Securities Exchange Act of 1934, as amended, and as an investment advisor under the Investment Advisors Act of 1940, as amended. M&T Securities is licensed as a life insurance agent in each state where M&T Bank operates branch offices and in a number of other states. It provides securities brokerage, investment advisory and insurance services. As of December 31, 2004, M&T Securities had assets of $32 million and stockholder’s equity of $24 million. M&T Securities recorded $73 million of revenue during 2004. The headquarters of M&T Securities are located at One M&T Plaza, Buffalo, New York 14203.

      Matthews, Bartlett & Dedecker, Inc. (“MBD”), a wholly owned insurance agency subsidiary of M&T Bank, was incorporated as a New York corporation in March 1955. MBD provides insurance agency services principally to the commercial market. As of December 31, 2004, MBD had assets of $20 million and stockholder’s equity of $8 million. MBD recorded revenues of $9 million during 2004. The headquarters of MBD are located at 334 Delaware Avenue, Buffalo, New York 14202.

      M&T Auto Receivables I, LLC (“M&T Auto Receivables”), a wholly owned subsidiary of M&T Bank, was formed as a Delaware limited liability company in May 2002. M&T Auto Receivables is a special purpose entity whose activities are generally restricted to purchasing and owning automobile loans for the purpose of securing a revolving asset-backed structured borrowing with an unaffiliated conduit lender. M&T Auto Receivables had assets of $565 million and stockholder’s equity of $64 million as of December 31, 2004, and recorded approximately $38 million of revenue during 2004. M&T Auto Receivables’ registered office is at 1209 Orange Street, Wilmington, Delaware 19801.

      MTB Investment Advisors, Inc. (“MTB Investment Advisors”), a wholly owned subsidiary of M&T Bank, was incorporated as a Maryland corporation on June 30, 1995. MTB Investment Advisors serves as investment advisor to the MTB Group of Funds, a family of proprietary mutual funds, and institutional clients. As of December 31, 2004, MTB Investment Advisors had assets of $25 million and stockholder’s equity of $20 million. MTB Investment Advisors recorded revenues of $40 million in 2004. The headquarters of MTB Investment Advisors are located at 100 East Pratt Street, Baltimore, Maryland 21202.

      The Registrant and its banking subsidiaries have a number of other special-purpose or inactive subsidiaries. These other subsidiaries did not represent, individually and collectively, a significant portion of the Company’s consolidated assets, net income and stockholders’ equity at December 31, 2004.

Segment Information, Principal Products/ Services and Foreign Operations

      Information about the Registrant’s business segments is included in note 21 of Notes to Financial Statements filed herewith in Part II, Item 8, “Financial Statements and Supplementary Data” and is further discussed in Part II, Item 7, “Management’s Discussion and Analysis of Financial Condition and Results of Operations.” The Registrant’s reportable segments have been determined based upon its internal profitability reporting system, which is organized by strategic business unit. Certain strategic business units have been combined for segment information reporting purposes where the nature of the products and services, the type of customer and the distribution of those products and services are similar. The reportable segments are Commercial Banking, Commercial Real Estate, Discretionary Portfolio, Residential Mortgage Banking and Retail Banking. The Company’s international activities are discussed in note 16 of Notes to Financial Statements filed herewith in Part II, Item 8, “Financial Statements and Supplementary Data.”

      The only activities that, as a class, contributed 10% or more of the sum of consolidated interest income and other income in each of the last three years were lending and investment securities transactions. The amount of income from such sources during those years is set forth on the Company’s Consolidated Statement of Income filed herewith in Part II, Item 8, “Financial Statements and Supplementary Data.”

Supervision and Regulation of the Company

      The banking industry is subject to extensive state and federal regulation and continues to undergo significant change. The following discussion summarizes certain aspects of the banking laws and regulations that affect the Company. Proposals to change the laws and regulations governing the banking industry are frequently raised in Congress, in state legislatures, and before the various bank regulatory agencies. The likelihood and timing of any changes and the impact such changes might have on the Company are impossible to determine with any certainty. A change in applicable laws or regulations, or a change in the way such laws or regulations are interpreted by regulatory agencies or courts, may have a material impact on the business, operations and earnings of the Company. To the extent that the following information describes statutory or regulatory provisions, it is qualified entirely by reference to the particular statutory or regulatory provision.

Financial Services Modernization

      The Gramm-Leach-Bliley Act of 1999 (“Gramm-Leach”) enables combinations among banks, securities firms and insurance companies. Under Gramm-Leach, bank holding companies are permitted to offer their customers virtually any type of financial service that is financial in nature or incidental thereto, including banking, securities underwriting, insurance (both underwriting and agency), and merchant banking.

      In order to engage in these financial activities, a bank holding company must qualify and register with the Federal Reserve Board as a “financial holding company” by demonstrating that each of its bank subsidiaries is “well capitalized,” “well managed,” and has at least a “satisfactory” rating under the Community Reinvestment Act of 1977 (“CRA”). M&T currently satisfies the qualifications for registering as a financial holding company, but has not elected to do so to date. For as long as AIB owns at least 15% of M&T’s outstanding common stock, M&T may not become a financial holding company without the approval of the Executive Committee of the M&T board of directors, which must also include the affirmative approval of the AIB Designee on such committee, as described above under the caption “Amendments to M&T’s Bylaws.”

      The financial activities authorized by Gramm-Leach may also be engaged in by a “financial subsidiary” of a national or state bank, except for insurance or annuity underwriting, insurance company portfolio investments, real estate investment and development, and merchant banking, which must be conducted in a financial holding company. In order for these financial activities to be engaged in by a financial subsidiary of a national or state bank, Gramm-Leach requires each of the parent bank (and its sister-bank affiliates) to be well capitalized and well managed; the aggregate consolidated assets of all of that bank’s financial subsidiaries may not exceed the lesser of 45% of its consolidated total assets or $50 billion; the bank must have at least a satisfactory CRA rating; and, if that bank is one of the 100 largest national banks, it must meet certain financial rating or other comparable requirements. M&T Bank and M&T Bank, N.A. currently satisfy the qualifications for engaging in financial activities through financial subsidiaries, but neither has elected to do so to date. Gramm-Leach also establishes a system of functional regulation, under which the federal banking agencies will regulate the banking activities of financial holding companies and banks’ financial subsidiaries, the U.S. Securities and Exchange Commission will regulate their securities activities, and state insurance regulators will regulate their insurance activities. Rules developed by the federal financial institutions regulators under Gramm-Leach require disclosure of privacy policies to consumers and, in some circumstances, allow consumers to prevent the disclosure of certain personal information to nonaffiliated third parties. The foregoing discussion is qualified in its entirety by reference to the statutory provisions of Gramm-Leach and the implementing regulations which have been adopted by various government agencies pursuant to Gramm-Leach.

Bank Holding Company Regulation

      As a registered bank holding company, the Registrant and its nonbank subsidiaries are subject to supervision and regulation under the BHCA by the Federal Reserve Board and under the Banking Law by the Banking Superintendent. The Federal Reserve Board requires regular reports from the Registrant and is authorized by the BHCA to make regular examinations of the Registrant and its subsidiaries.

      The Registrant may not acquire direct or indirect ownership or control of more than 5% of the voting shares of any company, including a bank, without the prior approval of the Federal Reserve Board, except as specifically authorized under the BHCA. The Registrant is also subject to regulation under the Banking Law with respect to certain acquisitions of domestic banks. Under the BHCA, the Registrant, subject to the approval of the Federal Reserve Board, may acquire shares of non-banking corporations the activities of which are deemed by the Federal Reserve Board to be so closely related to banking or managing or controlling banks as to be a proper incident thereto.

      The Federal Reserve Board has enforcement powers over bank holding companies and their non-banking subsidiaries, among other things, to interdict activities that represent unsafe or unsound practices or constitute violations of law, rule, regulation, administrative orders or written agreements with a federal bank regulator. These powers may be exercised through the issuance of cease-and-desist orders, civil money penalties or other actions.

      Under the Federal Reserve Board’s statement of policy with respect to bank holding company operations, a bank holding company is required to serve as a source of financial strength to its subsidiary depository institutions and to commit all available resources to support such institutions in circumstances where it might not do so absent such policy. Although this “source of strength” policy has been challenged in litigation, the Federal Reserve Board continues to take the position that it has authority to enforce it. For a discussion of circumstances under which a bank holding company may be required to guarantee the capital levels or performance of its subsidiary banks, see “Capital Adequacy,” below. Consistent with this “source of strength” policy, the Federal Reserve Board takes the position that a bank holding company generally should not maintain a rate of cash dividends unless its net income available to common shareholders has been sufficient to fully fund the dividends and the prospective rate of earnings retention appears to be consistent with the company’s capital needs, asset quality and overall financial condition. The Federal Reserve also has the authority to terminate any activity of a bank holding company that constitutes a serious risk to the financial soundness or stability of any subsidiary depository institution or to terminate its control of any bank or nonbank subsidiaries.

      The Riegle-Neal Interstate Banking and Branching Efficiency Act of 1994, as amended (the “Interstate Banking Act”) generally permits bank holding companies to acquire banks in any state, and preempts all state laws restricting the ownership by a bank holding company of banks in more than one state. The Interstate Banking Act also permits a bank to merge with an out-of-state bank and convert any offices into branches of the resulting bank if both states have not opted out of interstate branching; permits a bank to acquire branches from an out-of-state bank if the law of the state where the branches are located permits the interstate branch acquisition; and permits banks to establish and operate de novo interstate branches whenever the host state opts-in to de novo branching. Bank holding companies and banks seeking to engage in transactions authorized by the Interstate Banking Act must be adequately capitalized and managed.

      The Banking Law authorizes interstate branching by merger or acquisition on a reciprocal basis, and permits the acquisition of a single branch without restriction, but does not provide for de novo interstate branching.

      Bank holding companies and their subsidiary banks are also subject to the provisions of the CRA. Under the terms of the CRA, the Federal Reserve Board (or other appropriate bank regulatory agency) is required, in connection with its examination of a bank, to assess such bank’s record in meeting the credit needs of the communities served by that bank, including low- and moderate-income neighborhoods. During these examinations, the Federal Reserve Board (or other appropriate bank regulatory agency) rates

such bank’s compliance with the CRA as “Outstanding,” “Satisfactory,” “Needs to Improve” or “Substantial Noncompliance.” The failure of a bank to receive at least a “Satisfactory” rating could inhibit such bank or its bank holding company from undertaking certain activities, including acquisitions of other financial institutions or opening or relocating a branch office, as further discussed below. M&T Bank has a CRA rating of “Outstanding” and M&T Bank, N.A. has a CRA rating of “Satisfactory.” Furthermore, such assessment is also required of any bank that has applied, among other things, to merge or consolidate with or acquire the assets or assume the liabilities of a federally-regulated financial institution, or to open or relocate a branch office. In the case of a bank holding company applying for approval to acquire a bank or bank holding company, the Federal Reserve Board will assess the record of each subsidiary bank of the applicant bank holding company in considering the application. The Banking Law contains provisions similar to the CRA which are applicable to New York-chartered banks. M&T Bank has a CRA rating of “Outstanding” as determined by the New York State Banking Department.

Supervision and Regulation of Bank Subsidiaries

      The Registrant’s bank subsidiaries are subject to supervision and regulation, and are examined regularly, by various bank regulatory agencies: M&T Bank by the Federal Reserve Board and the Banking Superintendent; and M&T Bank, N.A. by the Comptroller of the Currency (“OCC”). The Registrant and its direct non-banking subsidiaries are affiliates, within the meaning of the Federal Reserve Act, of the Registrant’s subsidiary banks and their subsidiaries. As a result, the Registrant’s subsidiary banks and their subsidiaries are subject to restrictions on loans or extensions of credit to, purchases of assets from, investments in, and transactions with the Registrant and its direct non-banking subsidiaries and on certain other transactions with them or involving their securities. Gramm-Leach places similar restrictions on the Registrant’s subsidiary banks making loans or extending credit to, purchasing assets from, investing in, or entering into transactions with, their financial subsidiaries.

      Under the “cross-guarantee” provisions of the FDI Act, insured depository institutions under common control are required to reimburse the FDIC for any loss suffered by either the BIF or SAIF of the FDIC as a result of the default of a commonly controlled insured depository institution or for any assistance provided by the FDIC to a commonly controlled insured depository institution in danger of default. Thus, any insured depository institution subsidiary of M&T could incur liability to the FDIC in the event of a default of another insured depository institution owned or controlled by M&T. The FDIC’s claim under the cross-guarantee provisions is superior to claims of stockholders of the insured depository institution or its holding company and to most claims arising out of obligations or liabilities owed to affiliates of the institution, but is subordinate to claims of depositors, secured creditors and holders of subordinated debt (other than affiliates) of the commonly controlled insured depository institution. The FDIC may decline to enforce the cross-guarantee provisions if it determines that a waiver is in the best interest of the BIF or SAIF or both.

Dividends from Bank Subsidiaries

      The Registrant is a legal entity separate and distinct from its banking and other subsidiaries. The majority of the Registrant’s revenue is from dividends paid to the Registrant by its subsidiary banks. M&T Bank and M&T Bank, N.A. are subject, under one or more of the banking laws, to restrictions on the amount and frequency (no more often than quarterly) of dividend declarations. Future dividend payments to the Registrant by its subsidiary banks will be dependent on a number of factors, including the earnings and financial condition of each such bank, and are subject to the limitations referred to in note 22 of Notes to Financial Statements filed herewith in Part II, Item 8, “Financial Statements and Supplementary Data,” and to other statutory powers of bank regulatory agencies.

      An insured depository institution is prohibited from making any capital distribution to its owner, including any dividend, if, after making such distribution, the depository institution fails to meet the required minimum level for any relevant capital measure, including the risk-based capital adequacy and leverage standards discussed herein.

Supervision and Regulation of M&T Bank’s Subsidiaries

      M&T Bank has a number of subsidiaries. These subsidiaries are subject to the laws and regulations of both the federal government and the various states in which they conduct business. For example, M&T Securities is regulated by the Securities and Exchange Commission, the National Association of Securities Dealers, Inc. and state securities regulators. M&T Mortgage also is subject to state regulation in the states in which it operates.

Capital Adequacy

      The Federal Reserve Board, the FDIC and the OCC have adopted risk-based capital adequacy guidelines for bank holding companies and banks under their supervision. Under these guidelines, the so-called “Tier 1 capital” and “Total capital” as a percentage of risk-weighted assets and certain off-balance sheet instruments must be at least 4% and 8%, respectively.

      The Federal Reserve Board, the FDIC and the OCC have also imposed a leverage standard to supplement their risk-based ratios. This leverage standard focuses on a banking institution’s ratio of Tier 1 capital to average total assets, adjusted for goodwill and certain other items. Under these guidelines, banking institutions that meet certain criteria, including excellent asset quality, high liquidity, low interest rate exposure and good earnings, and that have received the highest regulatory rating must maintain a ratio of Tier 1 capital to total adjusted average assets of at least 3%. Institutions not meeting these criteria, as well as institutions with supervisory, financial or operational weaknesses, along with those experiencing or anticipating significant growth are expected to maintain a Tier 1 capital to total adjusted average assets ratio equal to at least 4% to 5%. As reflected in the table in note 22 of Notes to Financial Statements filed herewith in Part II, Item 8, “Financial Statements and Supplementary Data,” the risk-based capital ratios and leverage ratios of the Registrant, M&T Bank and M&T Bank, N.A. as of December 31, 2004 exceeded the required capital ratios for classification as “well capitalized,” the highest classification under the regulatory capital guidelines.

      The federal banking agencies, including the Federal Reserve Board and the OCC, maintain risk-based capital standards in order to ensure that those standards take adequate account of interest rate risk, concentration of credit risk, the risk of nontraditional activities and equity investments in nonfinancial companies, as well as reflect the actual performance and expected risk of loss on certain multifamily housing loans. Bank regulators periodically propose amendments to the risk-based capital guidelines and related regulatory framework, and consider changes to the risk-based capital standards that could significantly increase the amount of capital needed to meet the requirements for the capital tiers described below. While the Company’s management studies such proposals, the timing of adoption, ultimate form and effect of any such proposed amendments on M&T’s capital requirements and operations cannot be predicted.

      The federal banking agencies are required to take “prompt corrective action” in respect of depository institutions and their bank holding companies that do not meet minimum capital requirements. FDICIA established five capital tiers: “well capitalized,” “adequately capitalized,” “undercapitalized,” “significantly undercapitalized” and “critically undercapitalized.” A depository institution’s capital tier, or that of its bank holding company, depends upon where its capital levels are in relation to various relevant capital measures, including a risk-based capital measure and a leverage ratio capital measure, and certain other factors.

      Under the implementing regulations adopted by the federal banking agencies, a bank holding company or bank is considered “well capitalized” if it has (i) a total risk-based capital ratio of 10% or greater, (ii) a Tier 1 risk-based capital ratio of 6% or greater, (iii) a leverage ratio of 5% or greater and (iv) is not subject to any order or written directive to meet and maintain a specific capital level for any capital measure. An “adequately capitalized” bank holding company or bank is defined as one that has (i) a total risk-based capital ratio of 8% or greater, (ii) a Tier 1 risk-based capital ratio of 4% or greater and (iii) a leverage ratio of 4% or greater (or 3% or greater in the case of a bank with a composite CAMELS rating of 1). A bank holding company or bank is considered (A) “undercapitalized” if it has (i) a total risk-based capital ratio of less than 8%, (ii) a Tier 1 risk-based capital ratio of less than 4% or (iii) a leverage ratio of less than 4% (or 3%

in the case of a bank with a composite CAMELS rating of 1); (B) “significantly undercapitalized” if the bank has (i) a total risk-based capital ratio of less than 6%, or (ii) a Tier 1 risk-based capital ratio of less than 3% or (iii) a leverage ratio of less than 3% and (C) “critically undercapitalized” if the bank has a ratio of tangible equity to total assets equal to or less than 2%. The Federal Reserve Board may reclassify a “well capitalized” bank holding company or bank as “adequately capitalized” or subject an “adequately capitalized” or “undercapitalized” institution to the supervisory actions applicable to the next lower capital category if it determines that the bank holding company or bank is in an unsafe or unsound condition or deems the bank holding company or bank to be engaged in an unsafe or unsound practice and not to have corrected the deficiency. M&T, M&T Bank and M&T Bank, N.A. currently meet the definition of “well capitalized” institutions.

      “Undercapitalized” depository institutions, among other things, are subject to growth limitations, are prohibited, with certain exceptions, from making capital distributions, are limited in their ability to obtain funding from a Federal Reserve Bank and are required to submit a capital restoration plan. The federal banking agencies may not accept a capital plan without determining, among other things, that the plan is based on realistic assumptions and is likely to succeed in restoring the depository institution’s capital. In addition, for a capital restoration plan to be acceptable, the depository institution’s parent holding company must guarantee that the institution will comply with such capital restoration plan and provide appropriate assurances of performance. If a depository institution fails to submit an acceptable plan, including if the holding company refuses or is unable to make the guarantee described in the previous sentence, it is treated as if it is “significantly undercapitalized.” Failure to submit or implement an acceptable capital plan also is grounds for the appointment of a conservator or a receiver. “Significantly undercapitalized” depository institutions may be subject to a number of additional requirements and restrictions, including orders to sell sufficient voting stock to become “adequately capitalized,” requirements to reduce total assets and cessation of receipt of deposits from correspondent banks. Moreover, the parent holding company of a “significantly undercapitalized” depository institution may be ordered to divest itself of the institution or of nonbank subsidiaries of the holding company. “Critically undercapitalized” institutions, among other things, are prohibited from making any payments of principal and interest on subordinated debt, and are subject to the appointment of a receiver or conservator.

      Each federal banking agency prescribes standards for depository institutions and depository institution holding companies relating to internal controls, information systems, internal audit systems, loan documentation, credit underwriting, interest rate exposure, asset growth, compensation, a maximum ratio of classified assets to capital, minimum earnings sufficient to absorb losses, a minimum ratio of market value to book value for publicly traded shares and other standards as they deem appropriate. The Federal Reserve Board and OCC have adopted such standards.

      Depository institutions that are not “well capitalized” or “adequately capitalized” and have not received a waiver from the FDIC are prohibited from accepting or renewing brokered deposits. As of December 31, 2004, M&T Bank and M&T Bank, N.A. had approximately $2.0 billion and $177 thousand of brokered deposits, respectively.

      Although M&T has issued shares of common stock in connection with acquisitions or at other times, the Company has generally maintained capital ratios in excess of minimum regulatory guidelines largely through internal capital generation (i.e. net income less dividends paid). Historically, M&T’s dividend payout ratio and dividend yield, when compared with other bank holding companies, has been relatively low, thereby allowing for capital retention to support growth or to facilitate purchases of M&T’s common stock to be held as treasury stock. Management’s policy of reinvestment of earnings and repurchase of shares of common stock is intended to enhance M&T’s earnings per share prospects and thereby reward stockholders over time with capital gains in the form of increased stock price rather than high dividend income.

FDIC Deposit Insurance Assessments

      As institutions with deposits insured by the BIF and the SAIF, M&T Bank and M&T Bank, N.A. are subject to FDIC deposit insurance assessments. Under current law the regular insurance assessments to be paid by BIF-insured and SAIF-insured institutions are specified in schedules issued by the FDIC that specify, at semiannual intervals, target reserve ratios designed to maintain the reserve ratios of each of those insurance funds at 1.25% of their estimated insured deposits. The FDIC is also authorized to impose one or more special assessments.

      The FDIC has implemented a risk-based deposit premium assessment system under which each depository institution is placed in one of nine assessment categories based on the institution’s capital classification under the prompt corrective action provisions described above, and whether such institution is considered by its supervisory agency to be financially sound or to have supervisory concerns. The adjusted assessment rates for both BIF-insured and SAIF-insured institutions under the current system range from .00% to .27% depending upon the assessment category into which the insured institution is placed. Neither of the Company’s bank subsidiaries paid regular insurance assessments to the FDIC in 2004. However, the FDIC retains the ability to increase regular BIF and SAIF assessments and to levy special additional assessments.

      In addition to deposit insurance fund assessments, beginning in 1997 the FDIC assessed BIF-assessable and SAIF-assessable deposits to fund the repayment of debt obligations of the Financing Corporation (“FICO”). FICO is a government agency-sponsored entity that was formed to borrow the money necessary to carry out the closing and ultimate disposition of failed thrift institutions by the Resolution Trust Corporation. The current annualized rates established by the FDIC for both BIF-assessable and SAIF-assessable deposits are 1.44 basis points (hundredths of one percent).

      Any significant increases in assessment rates or additional special assessments by the FDIC could have an adverse impact on the results of operations and capital of M&T Bank or M&T Bank, N.A.

Consumer Protection Laws

      In connection with their respective lending and leasing activities, M&T Bank, certain of its subsidiaries, and M&T Bank, N.A. are each subject to a number of federal and state laws designed to protect borrowers and promote lending to various sectors of the economy and population. These laws include the Equal Credit Opportunity Act, the Fair Credit Reporting Act, the Truth in Lending Act, the Home Mortgage Disclosure Act, and the Real Estate Settlement Procedures Act, and various state law counterparts.

      In addition, federal law currently contains extensive customer privacy protection provisions. Under these provisions, a financial institution must provide to its customers, at the inception of the customer relationship and annually thereafter, the institution’s policies and procedures regarding the handling of customers’ nonpublic personal financial information. These provisions also provide that, except for certain limited exceptions, a financial institution may not provide such personal information to unaffiliated third parties unless the institution discloses to the customer that such information may be so provided and the customer is given the opportunity to opt out of such disclosure. Federal law makes it a criminal offense, except in limited circumstances, to obtain or attempt to obtain customer information of a financial nature by fraudulent or deceptive means.

Sarbanes-Oxley Act of 2002

      The Sarbanes-Oxley Act of 2002 implemented a broad range of corporate governance, accounting and reporting measures for companies that have securities registered under the Exchange Act, including publicly-held bank holding companies such as M&T. Specifically, the Sarbanes-Oxley Act of 2002 and the various regulations promulgated thereunder, established, among other things: (i) new requirements for audit committees, including independence, expertise, and responsibilities; (ii) additional responsibilities regarding financial statements for the Chief Executive Officer and Chief Financial Officer of the reporting

company; (iii) the forfeiture of bonuses or other incentive-based compensation and profits from the sale of the reporting company’s securities by the Chief Executive Officer and Chief Financial Officer in the twelve-month period following the initial publication of any financial statements that later require restatement; (iv) the creation of an independent accounting oversight board; (v) new standards for auditors and regulation of audits, including independence provisions that restrict non-audit services that accountants may provide to their audit clients; (vi) increased disclosure and reporting obligations for the reporting company and their directors and executive officers, including accelerated reporting of stock transactions and a prohibition on trading during pension blackout periods; (vii) a prohibition on personal loans to directors and officers, except certain loans made by insured financial institutions on nonpreferential terms and in compliance with other bank regulatory requirements; and (viii) a range of new and increased civil and criminal penalties for fraud and other violations of the securities laws.

USA Patriot Act

      The Uniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism Act of 2001 (the “USA Patriot Act”) imposes additional obligations on U.S. financial institutions, including banks and broker dealer subsidiaries, to implement policies, procedures and controls which are reasonably designed to detect and report instances of money laundering and the financing of terrorism. In addition, provisions of the USA Patriot Act require the federal financial institution regulatory agencies to consider the effectiveness of a financial institution’s anti-money laundering activities when reviewing bank mergers and bank holding company acquisitions. The Registrant and its impacted subsidiaries have approved policies and procedures that are believed to be compliant with the USA Patriot Act.

Regulatory Impact of Allfirst Acquisition

      As described above under the caption “Acquisition of Allfirst Financial Inc.,” AIB initially acquired approximately 22.5% and currently owns approximately 23.2% of the issued and outstanding shares of M&T common stock and has representation on the M&T and M&T Bank boards of directors. As a result, AIB has become M&T’s bank holding company under the BHCA and the Banking Law and AIB’s relationship with M&T is subject to the statutes and regulations governing bank holding companies described above. Among other things, AIB will have to join M&T in applications by M&T for acquisitions and new activities. The Reorganization Agreement requires AIB to join in such applications at M&T’s request, subject to certain limitations. In addition, because AIB is regulated by the Central Bank of Ireland (the “CBI”), the CBI may assert jurisdiction over M&T as a company controlled by AIB. Additional discussion of the regulatory implications of the Allfirst acquisition for M&T is set forth above under the caption “Certain Post-Closing Bank Regulatory Matters.”

Governmental Policies

      The earnings of the Company are significantly affected by the monetary and fiscal policies of governmental authorities, including the Federal Reserve Board. Among the instruments of monetary policy used by the Federal Reserve Board to implement these objectives are open-market operations in U.S. Government securities and federal funds, changes in the discount rate on member bank borrowings and changes in reserve requirements against member bank deposits. These instruments of monetary policy are used in varying combinations to influence the overall level of bank loans, investments and deposits, and the interest rates charged on loans and paid for deposits. The Federal Reserve Board frequently uses these instruments of monetary policy, especially its open-market operations and the discount rate, to influence the level of interest rates and to affect the strength of the economy, the level of inflation or the price of the dollar in foreign exchange markets. The monetary policies of the Federal Reserve Board have had a significant effect on the operating results of banking institutions in the past and are expected to continue to do so in the future. It is not possible to predict the nature of future changes in monetary and fiscal policies, or the effect which they may have on the Company’s business and earnings.

Competition

      The Company competes in offering commercial and personal financial services with other banking institutions and with firms in a number of other industries, such as thrift institutions, credit unions, personal loan companies, sales finance companies, leasing companies, securities firms and insurance companies. Furthermore, diversified financial services companies are able to offer a combination of these services to their customers on a nationwide basis. The Company’s operations are significantly impacted by state and federal regulations applicable to the banking industry. Moreover, the provisions of Gramm-Leach have allowed for increased competition among diversified financial services providers, and the Interstate Banking Act and the Banking Law may be considered to have eased entry into New York State by out-of-state banking institutions. As a result, the number of financial services providers and banking institutions with which the Company competes may grow in the future.

Other Legislative Initiatives

      Proposals may be introduced in the United States Congress and in the New York State Legislature and before various bank regulatory authorities which would alter the powers of, and restrictions on, different types of banking organizations and which would restructure part or all of the existing regulatory framework for banks, bank holding companies and other providers of financial services. Moreover, other bills may be introduced in Congress which would further regulate, deregulate or restructure the financial services industry. It is not possible to predict whether these or any other proposals will be enacted into law or, even if enacted, the effect which they may have on the Company’s business and earnings.

Other Information

      Through a link on the Investor Relations section of M&T’s website at www.mandtbank.com, copies of M&T’s Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q and Current Reports on Form 8-K, and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Exchange Act, are made available, free of charge, as soon as reasonably practicable after electronically filing such material with, or furnishing it to, the Securities and Exchange Commission. Copies of such reports and other information are also available at no charge to any person who requests them or at www.sec.gov. Such requests may be directed to M&T Bank Corporation, Shareholder Relations Department, One M&T Plaza, 12th Floor, Buffalo, NY 14203-2399, (716) 842-5445.

Corporate Governance

      M&T’s Corporate Governance Standards and the following corporate governance documents are also available on M&T’s website: Disclosure Policy; Executive Committee Charter; Nomination, Compensation and Governance Committee Charter; Audit Committee Charter; Financial Reporting and Disclosure Controls and Procedures Policy; Code of Ethics for CEO and Senior Financial Officers; Code of Business Conduct and Ethics; and Employee Complaint Procedures for Accounting and Auditing Matters. Copies of such governance documents are also available, free of charge, to any person who requests them. Such requests may be directed to M&T Bank Corporation, Shareholder Relations Department, One M&T Plaza, 12th Floor, Buffalo, NY 14203-2399, (716) 842-5445.

Statistical Disclosure Pursuant to Guide 3

      See cross-reference sheet for disclosures incorporated elsewhere in this Annual Report on Form 10-K. Additional information is included in the following tables.

Table 1

SELECTED CONSOLIDATED YEAR-END BALANCES

STOCKHOLDERS, EMPLOYEES AND OFFICES

Table 2

CONSOLIDATED EARNINGS

Table 3

COMMON SHAREHOLDER DATA

Table 4

CHANGES IN INTEREST INCOME AND EXPENSE(a)

      Both M&T and M&T Bank maintain their executive offices at One M&T Plaza in Buffalo, New York. This twenty-one story headquarters building, containing approximately 278,000 rentable square feet of space, is owned in fee by M&T Bank and was completed in 1967. M&T, M&T Bank and their subsidiaries occupy approximately 78% of the building and the remainder is leased to non-affiliated tenants. At December 31, 2004, the cost of this property (including improvements subsequent to the initial construction), net of accumulated depreciation, was $6.7 million.

      In September 1992, M&T Bank acquired an additional facility in Buffalo, New York with approximately 365,000 rentable square feet of space at a cost of approximately $12 million. Approximately 89% of this facility, known as M&T Center, is occupied by M&T Bank and its subsidiaries, with the remainder leased to non-affiliated tenants. At December 31, 2004, the cost of this building (including improvements subsequent to acquisition), net of accumulated depreciation, was $12.3 million.

      M&T Bank also owns and occupies two separate facilities in the Buffalo area which support certain back-office and operations functions of the Company. The total square footage of these facilities approximates 213,000 square feet and their combined cost (including improvements subsequent to acquisition), net of accumulated depreciation, was $17.7 million at December 31, 2004.

      M&T Bank also owns a facility in Syracuse, New York with approximately 151,000 rentable square feet of space. Approximately 43% of this facility is occupied by M&T Bank, with the remainder leased to non-affiliated tenants. At December 31, 2004, the cost of this building, net of accumulated depreciation, was $7.0 million.

      M&T Bank also owns facilities in Harrisburg, Pennsylvania and Millsboro, Delaware with approximately 213,000 and 320,000 rentable square feet of space, respectively. M&T Bank occupies approximately 40% and 89% of these respective facilities, with the remainder leased to non-affiliated tenants. At December 31, 2004, the cost of these buildings, net of accumulated depreciation, was $13.4 million and $8.2 million, respectively.

      No other properties owned by M&T Bank have more than 100,000 square feet of space. The cost, net of accumulated depreciation and amortization, of the Company’s premises and equipment is detailed in note 6 of Notes to Financial Statements filed herewith in Part II, Item 8, “Financial Statements and Supplementary Data.” Of the 663 domestic banking offices of the Registrant’s subsidiary banks at December 31, 2004, 285 are owned in fee and 378 are leased.

      M&T and its subsidiaries are subject in the normal course of business to various pending and threatened legal proceedings in which claims for monetary damages are asserted. Management, after consultation with legal counsel, does not anticipate that the aggregate ultimate liability, if any, arising out of litigation pending against M&T or its subsidiaries will be material to M&T’s consolidated financial position, but at the present time is not in a position to determine whether such litigation will have a material adverse effect on M&T’s consolidated results of operations in any future reporting period.

      No matters were submitted to a vote of M&T’s security holders during the fourth quarter of 2004.

Executive Officers of the Registrant

      Information concerning the Registrant’s executive officers is presented below as of February 15, 2005. The year the officer was first appointed to the indicated position with the Registrant or its subsidiaries is shown parenthetically. In the case of each corporation noted below, officers’ terms run until the first meeting of the board of directors after such corporation’s annual meeting, which in the case of the

Registrant takes place immediately following the Annual Meeting of Stockholders, and until their successors are elected and qualified.

      Robert G. Wilmers, age 70, is chairman of the board (2000), president (1988), chief executive officer (1983) and a director (1982) of the Registrant. From April 1998 until July 2000, he served as president and chief executive officer of the Registrant. He is chief executive officer (1983) and a director (1982) of M&T Bank, and served as chairman of the board of M&T Bank from March 1983 to July 2003 and as president of M&T Bank from March 1984 to June 1996. Mr. Wilmers is chairman of the board and a director of M&T Bank, N.A.(1995).

      Robert J. Bojdak, age 49, is an executive vice president and chief credit officer (2004) of the Registrant and M&T Bank. From April 2002 to April 2004, Mr. Bojdak served as senior vice president and credit deputy for M&T Bank. Previous to joining M&T Bank in 2002, Mr. Bojdak served in several senior management positions at KeyCorp., most recently as executive vice president and regional credit executive. He is an executive vice president and a director of M&T Bank, N.A. (2004) and M&T Credit (2004) and a director of M&T Lease (2004).

      Stephen J. Braunscheidel, age 48, is an executive vice president (2004) of the Registrant and M&T Bank, and is in charge of the Company’s Human Resources Division. Previously, he was a senior vice president in the M&T Investment Services Group, where he managed the Private Client Services and Employee Benefits departments. Mr. Braunscheidel has held a number of management positions with M&T Bank since 1978.

      Emerson L. Brumback, age 53, is an executive vice president (1997) and a director (2003) of the Registrant and president and chief operating officer and a director (2003) of M&T Bank. Previously, he was an executive vice president of M&T Bank (1997) and was in charge of the Company’s Retail Banking Division. Mr. Brumback is chairman of the board (1999) and a director (1997) of M&T Lease and an executive vice president (1998) and a director of M&T Bank, N.A.(1997). He is chairman of the board (1999) and a director (1997) of M&T Credit and a director of M&T Mortgage (1997) and M&T Securities (1997).

      Atwood Collins, III, age 58, is an executive vice president of the Registrant (1997) and M&T Bank (1996), and is the president and chief operating officer of M&T Bank’s Mid-Atlantic Division. Previously, he was president (2000) of the Hudson Valley Division of M&T Bank. Mr. Collins is a trustee of M&T Real Estate (1995) and a director of M&T Realty Capital (2003).

      Mark J. Czarnecki, age 49, is an executive vice president of the Registrant (1999) and M&T Bank (1997) and is in charge of the M&T Investment Group, which is comprised of M&T Securities, MBD and the Trust and Investment Services Division of M&T Bank. He is also in charge of the Company’s Retail Banking network which includes branches, automated teller machines, web-banking and telephone banking systems. Mr. Czarnecki is a director of M&T Securities (1999) and an executive vice president of M&T Bank, N.A. (1997). He is chairman of the board and a director of MBD (2000), M&T Life Insurance (2000) and MTB Investment Advisors (2003).

      Brian E. Hickey, age 52, is an executive vice president of the Registrant (1997) and M&T Bank (1996). He is a member of the Directors Advisory Council (1994) of the Rochester Division of M&T Bank. Mr. Hickey is responsible for managing all of the non-retail segments in the Albany, Hudson Valley, Rochester, Syracuse and Southern Divisions of M&T Bank, and he also has responsibility for managing the Company’s middle market commercial banking, health care and government banking businesses.

      Adam C. Kugler, age 47, is an executive vice president and treasurer (1997) of the Registrant and M&T Bank, and is in charge of the Company’s Treasury Division. Mr. Kugler is chairman of the board and a director of M&T Investment Company, Inc. (1999) and M&T Investment (2004), a director of M&T Securities (1997) and M&T Realty Capital (2003), and is an executive vice president, treasurer and a director of M&T Bank, N.A. (1997).

      Kevin J. Pearson, age 43, is an executive vice president (2002) of the Registrant and M&T Bank. He is president of the New York City (2002) and Philadelphia (2000) Divisions of M&T Bank. Mr. Pearson is responsible for managing all of the non-retail segments in those respective Divisions of M&T Bank, as well as the Company’s commercial real estate business. He is an executive vice president of M&T Real Estate (2003) and a director of M&T Realty Capital (2003). Mr. Pearson served as senior vice president of the Registrant from 2000 to 2002.

      Michael P. Pinto, age 49, is an executive vice president, chief financial officer (1997) and a director (2003) of the Registrant. He is a vice chairman, director (2003) and chief financial officer (1996) of M&T Bank, and oversees the Company’s Finance Division, Technology and Banking Operations Division, Corporate Services Group, Treasury Division and General Counsel’s Office. Mr. Pinto is a director of M&T Mortgage (1996), M&T Investment Company, Inc. (1999) and M&T Investment (2004) and a trustee of M&T Real Estate (1996). He is an executive vice president and chief financial officer (1996) and a director (1998) of M&T Bank, N.A.

      Robert E. Sadler, Jr., age 59, is an executive vice president (1990) and a director (1999) of the Registrant and chairman of the board (2003) and a director (1996) of M&T Bank. From June 1996 to July 2003, he served as president of M&T Bank. Mr. Sadler is president, chief executive officer and a director of M&T Bank, N.A.(1995); chairman of the board and a director of M&T Mortgage (1991); chairman of the board and a director of M&T Securities (1994); chairman of the board, president and a trustee of M&T Real Estate (1995); and a director (2000) of MBD.

      Eugene J. Sheehy, age 50, is an executive vice president and a director (2003) of the Registrant and M&T Bank, and is the chairman and chief executive officer of M&T Bank’s Mid-Atlantic Division. Prior to April 1, 2003, Mr. Sheehy served as chief executive officer of AIB’s USA Division from March 14, 2002 and chairman of the board of Allfirst from April 30, 2002. Mr. Sheehy also served as president and chief executive officer of Allfirst Bank from July 31, 2002 through April 1, 2003. Prior to March 14, 2002, Mr. Sheehy was the managing director of AIB Bank Republic of Ireland.

      Michele D. Trolli, age 43, is an executive vice president (2005) of the Registrant and M&T Bank. She is chief information officer and is in charge of the Technology and Banking Operations Division of M&T Bank. Ms. Trolli served as senior director, global systems support, with Franklin Resources, Inc., a worldwide investment management company, from May 2000 through December 2004. Prior to that, Ms. Trolli was employed by KeyCorp from 1990 to 2000, where she served most recently as executive vice president/development director and was responsible for its technology development organization.

PART II

      The Registrant’s common stock is traded under the symbol MTB on the New York Stock Exchange. See cross-reference sheet for disclosures incorporated elsewhere in this Annual Report on Form 10-K for market prices of the Registrant’s common stock, approximate number of common stockholders at year-end, frequency and amounts of dividends on common stock and restrictions on the payment of dividends.

      During the fourth quarter of 2004, M&T did not issue any shares of its common stock that were not registered under the Securities Act of 1933.

      In November 2001, M&T announced that it had been authorized by its Board of Directors to purchase up to 5,000,000 shares of its common stock. M&T completed that repurchase plan in February 2004. The common stock repurchased pursuant to such plan was purchased at an average cost of $82.11 per share. In February 2004, a new 5,000,000 share repurchase plan was authorized by M&T’s Board of Directors, and that plan was completed in December 2004. The common stock repurchased pursuant to that plan was purchased at an average cost of $93.68 per share. In December 2004, M&T announced another authorized 5,000,000 share repurchase plan, pursuant to which 152,900 shares were

purchased in 2004 at an average per share cost of $106.95. In total, M&T repurchased 6,520,800 shares of its common stock during 2004 at an average cost per share of $93.59.

      During the fourth quarter of 2004, M&T purchased shares of its common stock as follows:

      See cross-reference sheet for disclosures incorporated elsewhere in this Annual Report on Form 10-K.

Corporate Profile and Significant Developments

      M&T Bank Corporation (“M&T”) is a bank holding company headquartered in Buffalo, New York with consolidated assets of $52.9 billion at December 31, 2004. The consolidated financial information presented herein reflects M&T and all of its subsidiaries, which are referred to collectively as “the Company.” M&T’s wholly owned bank subsidiaries are M&T Bank and M&T Bank, National Association (“M&T Bank, N.A.”).

      M&T Bank, with total assets of $52.4 billion at December 31, 2004, is a New York-chartered commercial bank with 662 banking offices in New York State, Pennsylvania, Maryland, Delaware, Virginia, West Virginia and the District of Columbia, and an office in the Cayman Islands. M&T Bank and its subsidiaries offer a broad range of financial services to a diverse base of consumers, businesses, professional clients, governmental entities and financial institutions located in its markets. Lending is largely focused on consumers residing in New York State, Pennsylvania, Maryland, northern Virginia and Washington, D.C., and on small and medium size businesses based in those areas. Certain lending activities are also conducted in other states through various subsidiaries. M&T Bank’s subsidiaries include: M&T Credit Services, LLC, a consumer lending and commercial leasing and lending company; M&T Mortgage Corporation, a residential mortgage banking company; M&T Real Estate Trust, a commercial mortgage lender; M&T Realty Capital Corporation, a multi-family commercial mortgage lender; M&T Securities, Inc., which provides brokerage, investment advisory and insurance services; MTB Investment Advisors, Inc., which serves as investment advisor to the MTB funds, a family of proprietary mutual funds, and other funds and

institutional clients; M&T Lease, LLC, a consumer leasing company; and Matthews, Bartlett & Dedecker, Inc., an insurance agency.

      M&T Bank, N.A., with total assets of $367 million at December 31, 2004, is a national bank with an office in Oakfield, New York. M&T Bank, N.A. offers selected deposit and loan products on a nationwide basis, largely through telephone and direct mail marketing techniques. Insurance products were offered by M&T Bank, N.A. through banking offices of M&T Bank until August 1, 2004, when that business was transferred to M&T Securities.

      On April 1, 2003, M&T completed the acquisition of Allfirst Financial Inc. (“Allfirst”), a bank holding company headquartered in Baltimore, Maryland, from Allied Irish Banks, p.l.c. (“AIB”), Dublin, Ireland. Allfirst Bank, Allfirst’s primary bank subsidiary, was merged into M&T Bank on that date. Allfirst Bank operated 269 banking offices in Maryland, Pennsylvania, Virginia and the District of Columbia at the date of acquisition. The acquisition of Allfirst represented a major geographic expansion by M&T and created a strong Mid-Atlantic banking franchise. AIB received 26,700,000 shares of M&T common stock and $886 million in cash in exchange for all outstanding Allfirst common shares. Immediately after the completion of the acquisition, AIB owned approximately 22.5% of the outstanding shares of M&T’s common stock. The results of operations acquired in the Allfirst transaction have been included in the Company’s financial results since April 1, 2003. Table 1 provides a summary of assets acquired and liabilities assumed by the Company on April 1, 2003 in connection with the Allfirst transaction.

Table 1

ALLFIRST FINANCIAL INC. ACQUISITION

      Merger-related expenses associated with the Allfirst acquisition incurred during the year ended December 31, 2003 totaled $60 million ($39 million after tax effect). Such expenses were for professional services and temporary help associated with the conversion of systems and/or integration of operations; initial marketing and promotion expenses designed to introduce M&T Bank to Allfirst’s customers; travel and relocation costs; and printing, supplies and other costs of commencing operations in new markets and offices. There were no similar merger-related expenses incurred during 2004. In accordance with generally accepted accounting principles (“GAAP”), included in the determination of goodwill associated with the

Allfirst merger were charges totaling $29 million, net of applicable income taxes ($48 million before tax effect), for severance costs for former Allfirst employees; investment banking and other professional fees; and termination of Allfirst contracts for various services. As of December 31, 2004, there were no significant amounts of unpaid merger-related expenses or charges included in the determination of goodwill.

Critical Accounting Estimates

      The Company’s significant accounting policies are described in note 1 of Notes to Financial Statements. In applying those accounting policies, management of the Company is required to exercise judgment in determining many of the methodologies, assumptions and estimates to be utilized. Certain of the critical accounting estimates are more dependent on such judgment and in some cases may contribute to volatility in the Company’s reported financial performance should the assumptions and estimates used change over time due to changes in circumstances. Some of the more significant areas in which management of the Company applies critical assumptions and estimates include the following:

Overview

      Net income for the Company in 2004 was $723 million or $6.00 of diluted earnings per common share, representing increases of 26% and 21%, respectively, from $574 million or $4.95 per diluted share in 2003. Basic earnings per common share rose 21% to $6.14 in 2004 from $5.08 in 2003. The after-tax impact of merger-related expenses associated with the Allfirst acquisition was $39 million ($60 million pre-tax) or $.34 of diluted earnings per share and $.35 of basic earnings per share in 2003. There were no similar expenses in either 2004 or 2002. Net income in 2002 was $457 million, while diluted and basic earnings per share were $4.78 and $4.94, respectively.

      Net income expressed as a rate of return on average assets in 2004 was 1.40%, compared with 1.27% in 2003 and 1.43% in 2002. The return on average common stockholders’ equity was 12.67% in 2004, 11.62% in 2003 and 15.09% in 2002. Excluding the impact of merger-related expenses, the rates of return on average assets and average common equity were 1.35% and 12.41%, respectively, in 2003.

      Net interest income expressed on a taxable-equivalent basis rose 8% to $1.75 billion in 2004 from $1.62 billion in 2003, largely due to higher average earning assets, which increased 14% to $45.2 billion in 2004 from $39.5 billion in 2003. The increase in average earning assets resulted from higher levels of loans, leases and investment securities. Average loans and leases increased 9% to $37.1 billion in 2004 from $34.0 billion in 2003, largely due to the full-year impact of loans obtained in the April 1, 2003 acquisition of Allfirst. Average balances of investment securities rose to $8.0 billion in 2004 from $5.3 billion in 2003. Partially offsetting the impact of growth in earning assets was a lower net interest margin, or taxable-equivalent net interest income expressed as a percentage of average earning assets. Net interest margin declined 21 basis points (hundredths of one percent) to 3.88% in 2004 from 4.09% in 2003, due largely to lower yields earned on loans and investment securities. Also as a result of higher average earning assets, taxable-equivalent net interest income in 2003 was 28% higher than $1.26 billion in 2002. Average earning assets in 2003 rose 37% from $28.9 billion in 2002, largely the result of loans, leases and investment securities obtained in the Allfirst acquisition. Average loans and leases outstanding in 2003 increased $8.5 billion, or 33%, from $25.5 billion in 2002. Included in the 2003 average was the nine-month impact of the $10.3 billion of loans and leases obtained in the April 1, 2003 acquisition of Allfirst. Partially offsetting the impact of higher average earning assets was a narrowing of the Company’s net interest margin, which declined 27 basis points in 2003 from 4.36% a year earlier, largely resulting from lower yielding portfolios of loans and investment securities acquired in the Allfirst transaction.

      Reflecting favorable credit quality, the provision for credit losses was $95 million in 2004, down from $131 million in 2003 and $122 million in 2002. Net charge-offs decreased to $82 million in 2004 from $97 million in 2003 and $108 million in 2002. Net charge-offs as a percentage of average loans and leases outstanding declined to .22% in 2004 from .28% in 2003 and .42% in 2002. Net charge-offs of loans acquired from Allfirst were not significant during 2004 or 2003. The provision in each year reflects the result of management’s analysis of the composition of the loan and lease portfolio and other factors, including concern regarding uncertainty about economic conditions, both nationally and in many of the markets served by the Company, and the impact of such conditions and prospects on the abilities of borrowers to repay loans.

      Noninterest income grew 13% to $943 million in 2004 from $831 million in 2003. Noninterest income was $512 million in 2002. The increase in such income in 2004 as compared with 2003 was due to

operations associated with Allfirst, specifically, the inclusion of twelve months of Allfirst-related income in 2004 compared with nine months of similar income in 2003. Excluding Allfirst-related revenues, higher levels of service charges on deposit accounts, letter of credit and other credit-related fees and insurance-related income were offset by a decline in mortgage banking revenues resulting from a lower level of loan originations in 2004. Approximately $279 million of the increase from 2002 to 2003 was attributable to revenues related to operations or market areas associated with the former Allfirst franchise. Higher mortgage banking revenues and service charges on deposit accounts also contributed to the improvement.

      Noninterest expense in 2004 aggregated $1.52 billion, up 5% from $1.45 billion in 2003. Noninterest expense was $962 million in 2002. Included in such amounts are expenses considered by M&T to be “nonoperating” in nature, consisting of amortization of core deposit and other intangible assets of $75 million, $78 million and $51 million in 2004, 2003 and 2002, respectively, and merger-related expenses of $60 million in 2003. As already noted, there were no merger-related expenses in 2004 or 2002. Exclusive of these nonoperating expenses, noninterest operating expenses aggregated $1.44 billion in 2004, compared with $1.31 billion in 2003 and $910 million in 2002. A significant portion of the increase in such expenses in 2004 as compared with 2003 was due to operations associated with Allfirst, specifically, the inclusion of twelve months of Allfirst-related expenses in 2004 compared with nine months of similar expenses in 2003. Also contributing to the higher expenses in 2004 was a $25 million cash contribution made by M&T Bank to The M&T Charitable Foundation, a tax-exempt, private charitable foundation, during 2004’s third quarter. Expenses related to operations formerly associated with Allfirst significantly contributed to the higher level of expenses in 2003 compared with 2002, along with increased expenses for salaries and benefits, professional services and amortization of capitalized residential mortgage servicing rights. Partially offsetting those higher expenses was a $30 million decrease in the provision for possible impairment of capitalized residential mortgage servicing rights, which was $2 million in 2003 and $32 million in 2002. A partial reversal of the valuation allowance for possible impairment of capitalized residential mortgage servicing rights of $4 million was recognized in 2004.

      The efficiency ratio expresses the relationship of operating expenses to revenues. The Company’s efficiency ratio, or noninterest operating expenses divided by the sum of taxable-equivalent net interest income and noninterest income (exclusive of gains and losses from sales of bank investment securities), was 53.5% in 2004, compared with 53.6% in 2003 and 51.3% in 2002. The higher ratios in 2004 and 2003 as compared with 2002 reflect the impact of the acquired Allfirst operations that are now part of M&T.

Table 2

EARNINGS SUMMARY

Dollars in millions

Supplemental Reporting of Non-GAAP Results of Operations

      M&T has accounted for substantially all of its business combinations using the purchase method of accounting. As a result, the Company had recorded intangible assets consisting of goodwill and core deposit and other intangible assets totaling $3.1 billion at both December 31, 2004 and 2003, and $1.2 billion at December 31, 2002. Included in such intangible assets was goodwill of $2.9 billion at December 31, 2004 and 2003, up from $1.1 billion at December 31, 2002 due to the Allfirst acquisition. Amortization of core deposit and other intangible assets, after tax effect, totaled $46 million, $48 million and $32 million during 2004, 2003 and 2002, respectively. The higher levels of such amortization in 2004 and 2003 as compared with 2002 were due to the impact of core deposit and other intangible assets recorded as part of the acquisition of Allfirst.

      Since 1998 M&T has consistently provided supplemental reporting of its results on a “net operating” or “tangible” basis, in which M&T excludes the after-tax effect of amortization of core deposit and other intangible assets (and the related goodwill, core deposit intangible and other intangible asset balances, net of applicable deferred tax amounts, when calculating certain performance ratios) and expenses associated with merging acquired operations into the Company, since such expenses are considered by management to be “nonoperating” in nature. Although “net operating income” as defined by M&T is not a GAAP measure, M&T’s management believes that this information helps investors understand the effect of acquisition activity in reported results.

      Net operating income increased 16% to $769 million in 2004 from $661 million in 2003. Diluted net operating earnings per share in 2004 rose 12% to $6.38 from $5.70 in 2003. In 2002, net operating income totaled $489 million and diluted net operating earnings per share were $5.12.

      A reconciliation of net income and diluted earnings per share with net operating income and diluted net operating earnings per share is presented in table 3.

      Net operating income expressed as a rate of return on average tangible assets was 1.59% in 2004 and 2002, compared with 1.55% in 2003. Net operating return on average tangible common equity was 28.76% in 2004, compared with 28.49% and 26.71% in 2003 and 2002, respectively. Including the effect of merger-related expenses, net operating return on average tangible assets for 2003 was 1.46% and net operating return on average tangible common equity was 26.80%.

      A reconciliation of average assets and equity with average tangible assets and average tangible equity is presented in table 3.

Table 3

RECONCILIATION OF GAAP TO NON-GAAP MEASURES

Net Interest Income/ Lending and Funding Activities

      Taxable-equivalent net interest income rose 8% to $1.75 billion in 2004 from $1.62 billion in 2003, largely the result of growth in average earning assets. Such assets totaled $45.2 billion in 2004, up 14% from $39.5 billion in 2003. Higher average balances of loans and leases outstanding and investment securities contributed to the increase. Partially offsetting the positive impact on taxable-equivalent net interest income of higher average earning assets was a narrowing of the Company’s net interest margin, which declined to 3.88% in 2004 from 4.09% in 2003.

      Average loans and leases outstanding in 2004 grew 9% to $37.1 billion from $34.0 billion in 2003. The 2003 average balance reflected the impact of the $10.3 billion of loans obtained on April 1, 2003 in the Allfirst acquisition for the final nine months of that year, while the 2004 average balance reflected a full-year impact of Allfirst-related loans. The $10.3 billion of acquired loans were comprised of approximately $4.5 billion of commercial loans and leases (including $314 million of leveraged leases and $230 million of loans to foreign borrowers), $2.5 billion of commercial real estate loans, $383 million of residential real estate loans and $2.9 billion of consumer loans and leases.

      Other than the residential real estate loan portfolio, all of the Company’s other significant loan categories (commercial loans and leases, commercial real estate loans and consumer loans and leases) experienced growth in 2004 when compared with 2003, after considering the full-year impact that the acquired Allfirst loans had on 2004’s average loan balances. Average commercial real estate loans were $13.3 billion in 2004, 15% higher than $11.6 billion in 2003. Excluding the impact of the loans in the former Allfirst regions, average balances of outstanding commercial real estate loans grew $936 million in 2004 from 2003. Average consumer loans and leases totaled $11.2 billion during 2004, up 11% from $10.1 billion in the previous year, largely the result of growth in the automobile loan and home equity line of credit portfolios. The full-year impact of Allfirst-related loans and a $362 million increase in average automobile floor plan loans were the most significant contributors to higher average commercial loans and leases, which totaled $9.5 billion in 2004, up 12% from $8.5 billion in 2003. Average residential real estate loans declined in 2004 due largely to customer repayments of loans and the full-year impact of two separate securitization transactions totaling $1.3 billion of such loans during 2003’s final quarter. In connection with the first 2003 securitization transaction, the Company transferred approximately $838 million of one-to-four family residential mortgage loans to a qualified special purpose trust. The Company received $112 million in cash and retained approximately 87% of the resulting securities in exchange for the loans. The Company realized a gain of $1 million on the transaction which was included in “other revenues from operations.” In 2003’s second securitization transaction, approximately $441 million of one-to-four family residential mortgage loans were converted to mortgage-backed securities issued by the Federal National Mortgage Association (“FNMA”). All of those mortgage-backed securities were retained by the Company and, accordingly, no gain or loss was recognized. In each securitization, the retained securities were added to the Company’s portfolio of investment securities classified as available for sale.

      Taxable-equivalent net interest income increased 28% to $1.62 billion in 2003 from $1.26 billion in 2002. The improvement reflects a 37% increase in average earning assets to $39.5 billion in 2003 from $28.9 billion in 2002, partially offset by a narrowing of the Company’s net interest margin which declined to 4.09% in 2003 from 4.36% in 2002. The growth in average earning assets was largely attributable to higher average loans and leases outstanding, which totaled $34.0 billion in 2003, up 33% from 2002’s average of $25.5 billion. The most significant factor for those higher loan balances was the nine-month impact of the $10.3 billion of loans obtained in the Allfirst transaction.

      Average consumer loans and leases, excluding those obtained in the Allfirst acquisition, grew 20% in 2003, or $1.4 billion, from $6.8 billion in 2002. Increases in the outstanding average balances of automobile loans and leases of $1.0 billion and home equity lines of credit of $495 million were the leading contributors to that growth. Partially offsetting the growth in those loan types was a decline in the residential real estate loan portfolio, due largely to customer repayments of loans and the impact of the two securitization transactions completed in 2003’s fourth quarter and the full-year impact of a similar $1.1 billion securitization in the fourth quarter of 2002.

Table 4

AVERAGE BALANCE SHEETS AND TAXABLE-EQUIVALENT RATES