CECO ENVIRONMENTAL CORP

Ticker: CECO CUSIP: 125141101 Class: Common Stock

MARTINGALE ASSET MANAGEMENT L P's Holding History (CIK: 0000936944)

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

Q1 2018

Shares 18,825 Value ($000) $84 Avg Close $4.68 Range $4.00 - $5.42

Q4 2017

Shares 123,860 Value ($000) $636 Avg Close $6.73 Range $4.68 - $9.41

Q3 2017

Shares 123,837 Value ($000) $1,048 Avg Close $8.52 Range $6.87 - $10.59

Q2 2017

Shares 115,459 Value ($000) $1,060 Avg Close $9.92 Range $8.79 - $11.82

Q1 2017

Shares 114,259 Value ($000) $1,201 Avg Close $11.77 Range $9.60 - $14.11

Q4 2016

Shares 105,855 Value ($000) $1,477 Avg Close $11.85 Range $9.25 - $14.45

Q3 2016

Shares 77,856 Value ($000) $879 Avg Close $9.83 Range $8.20 - $11.34

Q2 2013

Shares 23,316 Value ($000) $287 Avg Close $10.81 Range $9.36 - $11.81

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2018	18,825	$84	$4.68	$4.00 - $5.42
Q4 2017	123,860	$636	$6.73	$4.68 - $9.41
Q3 2017	123,837	$1,048	$8.52	$6.87 - $10.59
Q2 2017	115,459	$1,060	$9.92	$8.79 - $11.82
Q1 2017	114,259	$1,201	$11.77	$9.60 - $14.11
Q4 2016	105,855	$1,477	$11.85	$9.25 - $14.45
Q3 2016	77,856	$879	$9.83	$8.20 - $11.34
Q2 2013	23,316	$287	$10.81	$9.36 - $11.81