ION GEOPHYSICAL CORP

CUSIP: 462044108 Class: COM

UBS Group AG's Holding History (CIK: 0001610520)

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

Q4 2015
Shares 107,859 Value ($000) $55 Avg Close — Range —
Q3 2015
Shares 35,000 Value ($000) $14 Avg Close — Range —
Q2 2015
Shares 30,000 Value ($000) $32 Avg Close — Range —
Q1 2015
Shares 19,813 Value ($000) $43 Avg Close — Range —
Q4 2014
Shares 19,813 Value ($000) $54 Avg Close — Range —