ION GEOPHYSICAL CORP

CUSIP: 462044108 Class: COM

FIRST TRUST ADVISORS LP's Holding History (CIK: 0001125816)

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

Q1 2015
Shares 1,202,479 Value ($000) $2,609 Avg Close — Range —
Q3 2014
Shares 121,747 Value ($000) $340 Avg Close — Range —
Q1 2014
Shares 145,527 Value ($000) $613 Avg Close — Range —
Q4 2013
Shares 85,768 Value ($000) $283 Avg Close — Range —
Q3 2013
Shares 254,682 Value ($000) $1,324 Avg Close — Range —
Q2 2013
Shares 141,820 Value ($000) $854 Avg Close — Range —