ION GEOPHYSICAL CORP

CUSIP: 462044207 Class: COMMON STOCK

BROOKFIELD Corp /ON/'s Holding History (CIK: 0001001085)

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

Q2 2017
Shares 37,750 Value ($000) $164 Avg Close — Range —
Q1 2017
Shares 37,750 Value ($000) $183 Avg Close — Range —
Q4 2016
Shares 37,750 Value ($000) $226 Avg Close — Range —
Q3 2016
Shares 37,750 Value ($000) $259 Avg Close — Range —
Q2 2016
Shares 37,750 Value ($000) $235 Avg Close — Range —