MISTRAS GROUP INC

Ticker: MG CUSIP: 60649T107 Class: Common Stock

GREAT LAKES ADVISORS, LLC's Holding History (CIK: 0001078013)

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

Q4 2019

Shares 227,876 Value ($000) $3,252 Avg Close $14.14 Range $12.20 - $16.73

Q3 2019

Shares 244,314 Value ($000) $4,007 Avg Close $15.34 Range $14.04 - $16.95

Q2 2019

Shares 245,720 Value ($000) $3,531 Avg Close $13.76 Range $12.38 - $14.89

Q1 2019

Shares 214,578 Value ($000) $2,963 Avg Close $14.96 Range $13.01 - $16.38

Q4 2018

Shares 178,767 Value ($000) $2,571 Avg Close $17.57 Range $13.66 - $22.00

Q4 2013

Shares 20,339 Value ($000) $425 Avg Close $19.22 Range $16.58 - $21.09

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2019	227,876	$3,252	$14.14	$12.20 - $16.73
Q3 2019	244,314	$4,007	$15.34	$14.04 - $16.95
Q2 2019	245,720	$3,531	$13.76	$12.38 - $14.89
Q1 2019	214,578	$2,963	$14.96	$13.01 - $16.38
Q4 2018	178,767	$2,571	$17.57	$13.66 - $22.00
Q4 2013	20,339	$425	$19.22	$16.58 - $21.09