ION GEOPHYSICAL CORP

CUSIP: 462044207 Class: COMMON STOCK

Trexquant Investment LP's Holding History (CIK: 0001633445)

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

Q1 2018
Shares 13,097 Value ($000) $355 Avg Close — Range —
Q4 2017
Shares 15,202 Value ($000) $300 Avg Close — Range —