AEGION CORP

CUSIP: 00770F104 Class: COMMON STOCK

MARSHALL WACE, LLP's Holding History (CIK: 0001318757)

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

Q3 2020
Shares 12,029 Value ($000) $170 Avg Close — Range —
Q3 2019
Shares 31,386 Value ($000) $671 Avg Close — Range —
Q4 2016
Shares 13,517 Value ($000) $320 Avg Close — Range —