ION GEOPHYSICAL CORP

CUSIP: 462044108 Class: COM

MUFG Americas Holdings Corp's Holding History (CIK: 0001011659)

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

Q1 2013
Shares 58,200 Value ($000) $379 Avg Close — Range —
Q4 2011
Shares 26,400 Value ($000) $162 Avg Close — Range —
Q3 2011
Shares 43,400 Value ($000) $205 Avg Close — Range —
Q2 2011
Shares 16,800 Value ($000) $159 Avg Close — Range —
Q1 2011
Shares 33,200 Value ($000) $421 Avg Close — Range —
Q4 2010
Shares 33,200 Value ($000) $282 Avg Close — Range —