In November 2010, the Board authorized the repurchase of up to 12.6 million shares of Comerica Incorporated outstanding common stock and authorized the purchase of up to all 11.5 million of the Corporation’s original outstanding warrants. On April 24, 2012, the Board authorized the repurchase of an additional 5.7 million shares of Comerica Incorporated outstanding common stock. There is no expiration date for the Corporation's share repurchase program. Open market repurchases of common stock totaled 4.1 million shares in 2011. There were no open market repurchases of warrants in 2011 and no open market repurchases of common stock or warrants in 2010. The following table summarizes the Corporation’s share repurchase activity for the year ended December 31, 2012.



(shares in thousands)	Total Number of Shares and Warrants Purchased as Part of Publicly Announced Repurchase Plans or Programs	Remaining Repurchase Authorization (a)		Total Number of Shares Purchased (b)	Average Price Paid Per Share		Average Price Paid Per Warrant (c)
Total first quarter 2012	1,125	18,822		1,257	29.28		—
Total second quarter 2012	2,884	21,596	(d)	2,908	30.51		—
Total third quarter 2012	2,928	18,668		2,931	30.71		—
October 2012	1,343	17,325		1,346	30.72		—
November 2012	1,274	16,051		1,274	29.09		—
December 2012	500	15,551		500	29.14		—
Total fourth quarter 2012	3,117	15,551		3,120	29.80		—
Total 2012	10,054	15,551		10,216	$	30.20	$	—


(a)	Maximum number of shares and warrants that may yet be purchased under the publicly announced plans or programs.


(b)	Includes approximately 162,000 shares shares purchased pursuant to deferred compensation plans and shares purchased from employees to pay for taxes related to restricted stock vesting under the terms of an employee share-based compensation plan during the year ended December 31, 2012 . These transactions are not considered part of the Corporation's repurchase program.


(c)	The Corporation made no repurchases of warrants under the repurchase program during the year ended December 31, 2012.


(d)	Includes the impact of the additional share repurchase authorization approved by the Board on April 24, 2012.