ION GEOPHYSICAL CORP

CUSIP: 462044207 Class: COMMON STOCK

Dynamic Technology Lab Private Ltd's Holding History (CIK: 0001535387)

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

Q2 2019
Shares 27,826 Value ($000) $224 Avg Close — Range —
Q1 2018
Shares 7,655 Value ($000) $207 Avg Close — Range —