ION GEOPHYSICAL CORP

CUSIP: 462044108 Class: COM

Horizon Investments, LLC's Holding History (CIK: 0001560717)

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

Q3 2014
Shares 62,893 Value ($000) $175 Avg Close — Range —
Q2 2014
Shares 57,144 Value ($000) $241 Avg Close — Range —
Q1 2014
Shares 53,681 Value ($000) $226 Avg Close — Range —