ION GEOPHYSICAL CORP

CUSIP: 462044207 Class: COMMON STOCK

Russell Investments Group, Ltd.'s Holding History (CIK: 0001692234)

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

Q4 2019
Shares 11,300 Value ($000) $98 Avg Close — Range —
Q4 2018
Shares 38,652 Value ($000) $200 Avg Close — Range —
Q3 2018
Shares 31,017 Value ($000) $482 Avg Close — Range —
Q4 2016
Shares 4,539 Value ($000) $27 Avg Close — Range —