GEOSPACE TECHNOLOGIES CORP

Ticker: GEOS CUSIP: 37364X109 Class: Common Stock

CHICAGO TRUST Co NA's Holding History (CIK: 0001601539)

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

Q1 2016

Shares 11,275 Value ($000) $139 Avg Close $11.02 Range $7.62 - $14.69

Q4 2015

Shares 11,692 Value ($000) $165 Avg Close $14.23 Range $10.16 - $18.91

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2016	11,275	$139	$11.02	$7.62 - $14.69
Q4 2015	11,692	$165	$14.23	$10.16 - $18.91