ION GEOPHYSICAL CORP

CUSIP: 462044108 Class: COM

SG Americas Securities, LLC's Holding History (CIK: 0001313360)

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

Q3 2015
Shares 229,977 Value ($000) $90 Avg Close — Range —
Q2 2015
Shares 92,046 Value ($000) $98 Avg Close — Range —
Q1 2015
Shares 26,011 Value ($000) $56 Avg Close — Range —
Q4 2014
Shares 26,213 Value ($000) $72 Avg Close — Range —
Q3 2014
Shares 39,467 Value ($000) $110 Avg Close — Range —
Q1 2014
Shares 14,662 Value ($000) $62 Avg Close — Range —
Q3 2013
Shares 23,863 Value ($000) $124 Avg Close — Range —