ION GEOPHYSICAL CORP

CUSIP: 462044207 Class: COMMON STOCK

TWO SIGMA INVESTMENTS, LP's Holding History (CIK: 0001179392)

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

Q1 2020
Shares 30,203 Value ($000) $38 Avg Close — Range —
Q4 2019
Shares 79,010 Value ($000) $686 Avg Close — Range —
Q3 2019
Shares 16,776 Value ($000) $153 Avg Close — Range —
Q2 2018
Shares 13,109 Value ($000) $319 Avg Close — Range —
Q1 2018
Shares 47,375 Value ($000) $1,284 Avg Close — Range —
Q4 2017
Shares 57,911 Value ($000) $1,144 Avg Close — Range —
Q4 2016
Shares 10,603 Value ($000) $64 Avg Close — Range —