ION GEOPHYSICAL CORP

CUSIP: 462044207 Class: COMMON STOCK

EAM Investors, LLC's Holding History (CIK: 0001510989)

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

Q1 2018
Shares 21,609 Value ($000) $586 Avg Close — Range —
Q4 2017
Shares 43,196 Value ($000) $853 Avg Close — Range —