ION GEOPHYSICAL CORP

CUSIP: 462044108 Class: COM

ARGENT CAPITAL MANAGEMENT LLC's Holding History (CIK: 0001120926)

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

Q3 2013
Shares 225,650 Value ($000) $1,173 Avg Close — Range —
Q2 2013
Shares 225,650 Value ($000) $1,358 Avg Close — Range —