Exhibit 99.4

WILMINGTON TRUST CORPORATION
Rodney Square North
1100 North Market Street
Wilmington, Delaware 19890-0001

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Use the Internet to transmit your voting instructions and for electronic delivery of information up until 11:59 p.m. Eastern Time the day before the cut-off date or meeting date. Have your proxy card in hand when you access the web site and follow the instructions to obtain your records and to create an electronic voting instruction form.

ELECTRONIC DELIVERY OF FUTURE PROXY MATERIALS
If you would like to reduce the costs incurred by our company in mailing proxy materials, you can consent to receiving all future proxy statements and proxy cards electronically via e-mail or the Internet. To sign up for electronic delivery, please follow the instructions above to vote using the Internet and, when prompted, indicate that you agree to receive or access proxy materials electronically in the future.

VOTE BY PHONE - 1-800-690-6903
Use any touch-tone telephone to transmit your voting instructions up until 11:59 p.m. Eastern Time the day before the cut-off date or meeting date. Have your proxy card in hand when you call and then follow the instructions.

VOTE BY MAIL
Mark, sign and date your proxy card and return it in the postage-paid envelope we have provided or return it to Vote Processing, c/o Broadridge, 51 Mercedes Way, Edgewood, NY 11717.

TO VOTE, MARK BLOCKS BELOW IN BLUE OR BLACK INK AS FOLLOWS:
	M29397-P04374	KEEP THIS PORTION FOR YOUR RECORDS
		DETACH AND RETURN THIS PORTION ONLY
THIS PROXY CARD IS VALID ONLY WHEN SIGNED AND DATED.

WILMINGTON TRUST CORPORATION

The Board of Directors recommends
that you vote FOR the following
proposals:

	For	Against	Abstain
1. To adopt the Agreement and Plan of Merger, or merger agreement, dated as of October 31, 2010, by and among M&T Bank Corporation, a New York corporation, MTB One, Inc., a Delaware corporation and wholly owned direct subsidiary of M&T, and Wilmington Trust Corporation, pursuant to which MTB One, Inc. will merge with and into Wilmington Trust Corporation.	¡	¡	¡

	For	Against	Abstain
2. To adjourn, postpone or continue the Special Meeting, if necessary, to solicit additional proxies in favor of the adoption of the merger agreement.	¡	¡	¡
Please sign exactly as your name(s) appear(s) hereon. When signing as attorney, executor, administrator, or other fiduciary, please give full title as such. Joint owners should each sign personally. All holders must sign. If a corporation or partnership, please sign in full corporate or partnership name, by authorized officer.

Signature [PLEASE SIGN WITHIN BOX] Date Signature (Joint Owners) Date

Important Notice Regarding the Availability of Proxy Materials for the Special Meeting:
The Notice and Proxy Statement are available at www.proxyvote.com.

M29398-P04374

WILMINGTON TRUST CORPORATION
SPECIAL MEETING OF STOCKHOLDERS
TUESDAY, MARCH 22, 2011 — 10:00 AM
Wilmington Trust Plaza
Mezzanine Level
301 West Eleventh Street
Wilmington, Delaware 19801
THIS PROXY IS SOLICITED BY THE BOARD OF DIRECTORS

The undersigned stockholder of WILMINGTON TRUST CORPORATION, a Delaware corporation (the “Company”), hereby appoints David R. Gibson and Michael A. DiGregorio, and each of them, proxies and attorneys-in-fact of the undersigned, each with full power of substitution, to attend and act for the undersigned at the Special Meeting of Stockholders to be held on Tuesday, March 22, 2011 at 10:00 a.m., local time, at Wilmington Trust Plaza, Mezzanine Level, 301 West Eleventh Street, Wilmington, Delaware, 19801, and at any adjournments, postponements or continuations thereof, and in connection therewith to vote and represent all of the shares of common stock of the Company which the undersigned would be entitled to vote.

Each of the above-named proxies at said meeting, either in person or by substitute, shall have and exercise all of the powers said hereunder. The undersigned hereby revokes all prior proxies given by the undersigned to vote at said meeting.

If no instructions are indicated herein, this proxy will be treated as a grant of authority to vote “FOR” Proposals 1 and 2.

CONTINUED AND TO BE SIGNED ON THE REVERSE SIDE