ION GEOPHYSICAL CORP

CUSIP: 462044207 Class: COMMON STOCK

SIMPLEX TRADING, LLC's Holding History (CIK: 0001488542)

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

Q2 2022
Shares 2,000 Value ($000) $0 Avg Close — Range —
Q3 2021
Shares 4,792 Value ($000) $10 Avg Close — Range —
Q2 2021
Shares 4,792 Value ($000) $10 Avg Close — Range —
Q3 2020
Shares 1,373 Value ($000) $2 Avg Close — Range —
Q1 2020
Shares 8,060 Value ($000) $10 Avg Close — Range —
Q3 2019
Shares 1,124 Value ($000) $10 Avg Close — Range —
Q2 2019
Shares 2,481 Value ($000) $19 Avg Close — Range —
Q1 2019
Shares 7,359 Value ($000) $106 Avg Close — Range —
Q4 2018
Shares 47 Value ($000) $0 Avg Close — Range —
Q4 2017
Shares 1,411 Value ($000) $27 Avg Close — Range —
Q4 2016
Shares 646 Value ($000) $3 Avg Close — Range —
Q3 2016
Shares 545 Value ($000) $3 Avg Close — Range —