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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
28412	Comerica Inc W	CMA	National Commercial Banks (6021)	000006021

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1202719	Jr W Ralph Babb	Comerica Incorporated 1717 Main Street, Mc 6400 Dallas TX 75201	Chairman & Ceo	Yes	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock	Acquisiton	2017-04-28	41,800	$17.32	636,555	No	4	M	Direct
Common Stock	Disposition	2017-04-28	300	$70.69	636,255	No	4	S	Direct
Common Stock	Disposition	2017-04-28	500	$70.73	635,755	No	4	S	Direct
Common Stock	Disposition	2017-04-28	41,000	$70.74	594,755	No	4	S	Direct
Common Stock	Acquisiton	2017-05-01	41,800	$17.32	636,555	No	4	M	Direct
Common Stock	Disposition	2017-05-01	41,800	$71.14	594,755	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	M	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	M	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Employee Stock Option (right to buy)	Disposition	2017-04-28	41,800	$0.00	41,800	$17.32
Common Stock	Employee Stock Option (right to buy)	Disposition	2017-05-01	41,800	$0.00	41,800	$17.32

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
41,800	2010-01-27	2019-01-27	No	4	M	Direct
0	2010-01-27	2019-01-27	No	4	M	Direct

Reported Derivative Holdings

Sec. Name	Sec. Type	Price	Date	Expiration Date	Amount	Remaning Holdings	Nature of Ownership
Common Stock	Employee Stock Option (right to buy)	$39.16	2011-07-27	2020-07-27	61,500	61,500	Direct
Common Stock	Employee Stock Option (right to buy)	$39.10	2012-01-25	2021-01-25	115,300	115,300	Direct
Common Stock	Employee Stock Option (right to buy)	$29.60	2013-01-24	2022-01-24	121,400	121,400	Direct
Common Stock	Employee Stock Option (right to buy)	$33.79	2014-01-22	2023-01-22	34,700	34,700	Direct
Common Stock	Employee Stock Option (right to buy)	$49.51	2015-01-21	2024-01-21	27,863	27,863	Direct
Common Stock	Employee Stock Option (right to buy)	$42.32	2016-01-27	2025-01-27	31,495	31,495	Direct
Common Stock	Employee Stock Option (right to buy)	$32.97	2017-01-26	2026-01-26	36,145	36,145	Direct
Common Stock	Employee Stock Option (right to buy)	$67.66	2018-01-24	2027-01-24	18,220	18,220	Direct

Expiration Date	Amount	Remaning Holdings	Nature of Ownership
2020-07-27	61,500	61,500	Direct
2021-01-25	115,300	115,300	Direct
2022-01-24	121,400	121,400	Direct
2023-01-22	34,700	34,700	Direct
2024-01-21	27,863	27,863	Direct
2025-01-27	31,495	31,495	Direct
2026-01-26	36,145	36,145	Direct
2027-01-24	18,220	18,220	Direct

Footnotes

Includes shares acquired through employee stock plans, shares purchased with reinvested dividends and stock units held pursuant to a deferred compensation plan as of April 28, 2017.
Includes shares acquired through employee stock plans, shares purchased with reinvested dividends and stock units held pursuant to a deferred compensation plan as of May 1, 2017.
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $71.02 to $71.28, inclusive. Thereporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request,full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (3) to this Form 4.
The options vest in four equal annual installments (based on the original grant amount) beginning on the date indicated in this column.