ION GEOPHYSICAL CORP

CUSIP: 462044108 Class: COM

Gemmer Asset Management LLC's Holding History (CIK: 0001607825)

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

Q3 2015
Shares 5,803 Value ($000) $2 Avg Close — Range —
Q4 2014
Shares 307 Value ($000) $1 Avg Close — Range —
Q3 2014
Shares 394 Value ($000) $1 Avg Close — Range —
Q2 2014
Shares 235 Value ($000) $1 Avg Close — Range —
Q1 2014
Shares 116 Value ($000) $0 Avg Close — Range —