ION GEOPHYSICAL CORP

CUSIP: 462044108 Class: COM

COMERICA BANK's Holding History (CIK: 0000901541)

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

Q3 2015
Shares 128,964 Value ($000) $50 Avg Close — Range —
Q2 2015
Shares 258,334 Value ($000) $276 Avg Close — Range —
Q1 2015
Shares 126,029 Value ($000) $273 Avg Close — Range —
Q4 2014
Shares 249,800 Value ($000) $686 Avg Close — Range —
Q3 2014
Shares 126,457 Value ($000) $353 Avg Close — Range —
Q2 2014
Shares 126,100 Value ($000) $532 Avg Close — Range —
Q1 2014
Shares 128,974 Value ($000) $543 Avg Close — Range —
Q4 2013
Shares 128,164 Value ($000) $423 Avg Close — Range —
Q3 2013
Shares 133,041 Value ($000) $692 Avg Close — Range —
Q2 2013
Shares 127,056 Value ($000) $765 Avg Close — Range —