MFRI INC

CUSIP: 552721102 Class: COMMON STOCK

DIMENSIONAL FUND ADVISORS LP's Holding History (CIK: 0000354204)

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

Q4 2016
Shares 566,126 Value ($000) $4,586 Avg Close — Range —
Q3 2016
Shares 566,426 Value ($000) $4,316 Avg Close — Range —
Q2 2016
Shares 566,484 Value ($000) $4,226 Avg Close — Range —
Q1 2016
Shares 566,819 Value ($000) $3,968 Avg Close — Range —
Q4 2015
Shares 566,759 Value ($000) $3,707 Avg Close — Range —
Q3 2015
Shares 573,361 Value ($000) $2,936 Avg Close — Range —
Q2 2015
Shares 581,182 Value ($000) $3,516 Avg Close — Range —
Q1 2015
Shares 581,382 Value ($000) $3,634 Avg Close — Range —
Q4 2014
Shares 581,382 Value ($000) $4,075 Avg Close — Range —
Q3 2014
Shares 582,823 Value ($000) $5,525 Avg Close — Range —
Q2 2014
Shares 582,580 Value ($000) $6,647 Avg Close — Range —
Q1 2014
Shares 577,834 Value ($000) $7,864 Avg Close — Range —
Q4 2013
Shares 569,038 Value ($000) $8,166 Avg Close — Range —
Q3 2013
Shares 560,338 Value ($000) $6,399 Avg Close — Range —
Q2 2013
Shares 559,503 Value ($000) $6,362 Avg Close — Range —