ION GEOPHYSICAL CORP

CUSIP: 462044207 Class: COMMON STOCK

PRELUDE CAPITAL MANAGEMENT, LLC's Holding History (CIK: 0001387508)

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

Q4 2019
Shares 9,959 Value ($000) $86 Avg Close — Range —
Q3 2019
Shares 8,841 Value ($000) $81 Avg Close — Range —
Q2 2019
Shares 7,273 Value ($000) $59 Avg Close — Range —
Q1 2019
Shares 2,372 Value ($000) $34 Avg Close — Range —
Q2 2018
Shares 789 Value ($000) $19 Avg Close — Range —
Q1 2018
Shares 5,477 Value ($000) $148 Avg Close — Range —
Q4 2017
Shares 400 Value ($000) $8 Avg Close — Range —
Q3 2017
Shares 400 Value ($000) $4 Avg Close — Range —
Q4 2016
Shares 600 Value ($000) $4 Avg Close — Range —