ION GEOPHYSICAL CORP

CUSIP: 462044108 Class: COM

GUGGENHEIM CAPITAL LLC's Holding History (CIK: 0001283072)

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

Q4 2015
Shares 27,542 Value ($000) $14 Avg Close — Range —
Q3 2015
Shares 549,929 Value ($000) $214 Avg Close — Range —
Q2 2015
Shares 594,158 Value ($000) $636 Avg Close — Range —
Q1 2015
Shares 534,876 Value ($000) $1,161 Avg Close — Range —
Q4 2014
Shares 551,668 Value ($000) $1,517 Avg Close — Range —
Q3 2014
Shares 46,466 Value ($000) $130 Avg Close — Range —
Q2 2014
Shares 42,284 Value ($000) $179 Avg Close — Range —
Q1 2014
Shares 54,057 Value ($000) $228 Avg Close — Range —
Q4 2013
Shares 53,467 Value ($000) $176 Avg Close — Range —
Q3 2013
Shares 32,388 Value ($000) $169 Avg Close — Range —
Q2 2013
Shares 52,832 Value ($000) $318 Avg Close — Range —