ION GEOPHYSICAL CORP

CUSIP: 462044207 Class: COMMON STOCK

GSA CAPITAL PARTNERS LLP's Holding History (CIK: 0001362033)

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

Q4 2020
Shares 54,182 Value ($000) $132 Avg Close — Range —
Q3 2020
Shares 21,994 Value ($000) $33 Avg Close — Range —
Q1 2020
Shares 162,947 Value ($000) $207 Avg Close — Range —
Q4 2019
Shares 31,538 Value ($000) $274 Avg Close — Range —
Q3 2018
Shares 43,988 Value ($000) $684 Avg Close — Range —
Q2 2018
Shares 127,593 Value ($000) $3,101 Avg Close — Range —