GEOSPACE TECHNOLOGIES CORP

Ticker: GEOS CUSIP: 37364X109 Class: Common Stock

Dorsey & Whitney Trust CO LLC's Holding History (CIK: 0001384042)

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

Q3 2013

Shares 2,550 Value ($000) $215 Avg Close $74.50 Range $66.87 - $84.82

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2013	2,550	$215	$74.50	$66.87 - $84.82