ION GEOPHYSICAL CORP

CUSIP: 462044207 Class: COMMON STOCK

D. E. Shaw & Co., Inc.'s Holding History (CIK: 0001009207)

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

Q4 2019
Shares 35,477 Value ($000) $308 Avg Close — Range —
Q1 2019
Shares 10,789 Value ($000) $156 Avg Close — Range —