ION GEOPHYSICAL CORP

CUSIP: 462044108 Class: COM

STATE STREET CORP's Holding History (CIK: 0000093751)

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

Q3 2015
Shares 2,547,124 Value ($000) $993 Avg Close — Range —
Q2 2015
Shares 2,569,918 Value ($000) $2,748 Avg Close — Range —
Q1 2015
Shares 2,511,617 Value ($000) $5,451 Avg Close — Range —
Q4 2014
Shares 2,969,428 Value ($000) $8,166 Avg Close — Range —
Q3 2014
Shares 3,006,091 Value ($000) $8,388 Avg Close — Range —
Q2 2014
Shares 3,459,917 Value ($000) $14,602 Avg Close — Range —
Q1 2014
Shares 3,426,364 Value ($000) $14,425 Avg Close — Range —
Q4 2013
Shares 3,905,827 Value ($000) $12,891 Avg Close — Range —
Q3 2013
Shares 3,271,296 Value ($000) $17,008 Avg Close — Range —
Q2 2013
Shares 3,026,120 Value ($000) $18,217 Avg Close — Range —