COMERICA INC

Ticker: CMA CUSIP: 200340107 Class: EQTY

Portolan Capital Management, LLC's Holding History (CIK: 0001350290)

Note: Option positions (PUT/CALL) are excluded.

Q4 2017

Shares 42,085 Value ($000) $3,653 Avg Close $56.25 Range $51.79 - $61.83

Q3 2017

Shares 45,959 Value ($000) $3,505 Avg Close $49.86 Range $44.53 - $53.61

Q2 2017

Shares 68,234 Value ($000) $4,997 Avg Close $48.67 Range $44.86 - $52.36

Q1 2017

Shares 43,995 Value ($000) $3,017 Avg Close $48.24 Range $44.53 - $51.80

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2017	42,085	$3,653	$56.25	$51.79 - $61.83
Q3 2017	45,959	$3,505	$49.86	$44.53 - $53.61
Q2 2017	68,234	$4,997	$48.67	$44.86 - $52.36
Q1 2017	43,995	$3,017	$48.24	$44.53 - $51.80