ION GEOPHYSICAL CORP

CUSIP: 462044108 Class: COM

SHEPHERD KAPLAN KROCHUK, LLC's Holding History (CIK: 0001218583)

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

Q2 2014
Shares 37,800 Value ($000) $160 Avg Close — Range —
Q1 2014
Shares 37,800 Value ($000) $159 Avg Close — Range —
Q4 2013
Shares 37,000 Value ($000) $122 Avg Close — Range —