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Shareholder Information

STOCK
Comerica’s stock trades on the New York Stock Exchange (NYSE) under the symbol CMA.

SHAREHOLDER ASSISTANCE
Inquiries related to shareholder records, change of name, address or ownership of stock, and lost or stolen stock certificates should be directed to the transfer agent and registrar:

WRITTEN REQUESTS: Wells Fargo Shareowner Services P.O. Box 64854 St. Paul, MN 55164-0854 (877) 536-3551 stocktransfer@wellsfargo.com

CERTIFIED/ OVERNIGHT MAIL: Wells Fargo Shareowner Services 161 North Concord Exchange South St. Paul, MN 55075-1139 (877) 536-3551 shareowneronline.com

ELIMINATION OF DUPLICATE MATERIALS
If you receive duplicate mailings at one address, you may have multiple shareholder accounts. You can consolidate your multiple accounts into a single, more convenient account by contacting the transfer agent shown above. In addition, if more than one member of your household is receiving shareholder materials, you can eliminate the duplicate mailings by contacting the transfer agent.

DIVIDEND REINVESTMENT PLAN
Comerica offers a dividend reinvestment plan, which permits participating shareholders of record to reinvest dividends in Comerica common stock without paying brokerage commissions or service charges. Participating shareholders also may invest up to $10,000 in additional funds each month for the purchase of additional shares. A brochure describing the plan in detail and an authorization form can be requested from the transfer agent shown above.

DIVIDEND DIRECT DEPOSIT
Common shareholders of Comerica may have their dividends deposited into their savings or checking account at any bank that is a member of the National Automated Clearing House (ACH) system. Information describing this service and an authorization form can be requested from the transfer agent shown above.

DIVIDEND PAYMENTS
Subject to approval of the board of directors, dividends customarily are paid on Comerica’s common stock on or about January 1, April 1, July 1 and October 1.

FORM 10-K
A copy of the Corporation’s Annual Report on Form 10-K, as filed with the Securities and Exchange Commission, may be obtained without charge upon written request to the Secretary of the Corporation at the address listed on the inside back cover.

STOCK PRICES, DIVIDENDS AND YIELDS

			Dividends	Dividends
Quarter	High	Low	Per Share	Yield*
2006
Fourth	$59.72	$55.82	$0.59	4.1%
Third	58.95	51.45	0.59	4.3
Second	60.10	50.12	0.59	4.3
First	58.62	54.23	0.59	4.2
2005
Fourth	$60.25	$53.60	$0.55	3.9%
Third	63.38	56.80	0.55	3.7
Second	59.29	53.17	0.55	3.9
First	61.40	53.70	0.55	3.8

* Dividend yield is calculated by annualizing the quarterly dividend per share and dividing by an average of the high and low price in the quarter.

As of January 31, 2007 there were 14,133 holders of record of the Corporation’s common stock.

OFFICER CERTIFICATIONS
On June 6, 2006, Comerica’s Chief Executive Officer
submitted his annual certification to the New York Stock Exchange stating that he was not aware of any violation by the Corporation of the Exchange’s corporate governance listing standards. Comerica filed the certifications by its Chief Executive Officer and Chief Financial Officer required by Section 302 of the Sarbanes-Oxley Act of 2002 as exhibits to its Annual Report on Form 10-K for the fiscal year ended December 31, 2006.

Debt Ratings – Senior Unsecured Obligations

	Comerica	Comerica
	Incorporated	Bank
Standard and Poor’s	A	A+
Moody’s Investors Service	A2	A1
Fitch Ratings	A+	A+
Dominion Bond Rating Service	A	A (high)

INVESTOR RELATIONS ON THE INTERNET
Go to www.comerica.com to find the latest investor relations information about Comerica, including stock quotes, news releases and financial data.

COMMUNITY REINVESTMENT ACT (CRA)
PERFORMANCE
Comerica is committed to meeting the credit needs of the communities it serves. Comerica’s overall CRA rating is “Outstanding.”

EQUAL EMPLOYMENT OPPORTUNITY
Comerica is committed to its affirmative action program and practices, which ensure uniform treatment of employees without regard to race, creed, ethnicity, color, age, national origin, religion, handicap, marital status, sexual orientation, veteran status, weight, height or sex.

Corporate Ethics
The Corporate Governance section of Comerica’s website at www.comerica.com includes the following codes of ethics: Senior Financial Officer Code of Ethics, Code of Business Conduct and Ethics for Employees, and Code of Business Conduct and Ethics for Members of the Board of Directors. Comerica will also disclose in that website section any amendments or waivers to those codes of ethics, within four business days of such an event.