ION GEOPHYSICAL CORP

CUSIP: 462044108 Class: COM

ROYCE & ASSOCIATES LP's Holding History (CIK: 0000906304)

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

Q4 2015
Shares 1,078,200 Value ($000) $542 Avg Close — Range —
Q3 2015
Shares 1,078,200 Value ($000) $420 Avg Close — Range —
Q2 2015
Shares 1,078,200 Value ($000) $1,154 Avg Close — Range —
Q1 2015
Shares 1,078,200 Value ($000) $2,340 Avg Close — Range —
Q4 2014
Shares 1,078,200 Value ($000) $2,965 Avg Close — Range —
Q3 2014
Shares 1,178,200 Value ($000) $3,287 Avg Close — Range —
Q2 2014
Shares 1,178,200 Value ($000) $4,972 Avg Close — Range —
Q1 2014
Shares 1,178,200 Value ($000) $4,960 Avg Close — Range —
Q4 2013
Shares 1,178,200 Value ($000) $3,888 Avg Close — Range —
Q3 2013
Shares 1,178,200 Value ($000) $6,127 Avg Close — Range —
Q2 2013
Shares 1,178,200 Value ($000) $7,093 Avg Close — Range —