MISTRAS GROUP INC

CUSIP: 60649T10 Class: COM

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP's Holding History (CIK: 0001164508)

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

Q3 2016

Shares 123,226 Value ($000) $2,892 Avg Close — Range —

Q2 2016

Shares 93,734 Value ($000) $2,237 Avg Close — Range —

Q1 2016

Shares 116,545 Value ($000) $2,887 Avg Close — Range —

Q4 2015

Shares 111,064 Value ($000) $2,120 Avg Close — Range —

Q3 2015

Shares 15,965 Value ($000) $205 Avg Close — Range —

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2016	123,226	$2,892	—	—
Q2 2016	93,734	$2,237	—	—
Q1 2016	116,545	$2,887	—	—
Q4 2015	111,064	$2,120	—	—
Q3 2015	15,965	$205	—	—