GEOSPACE TECHNOLOGIES CORP

Ticker: GEOS CUSIP: 37364X109 Class: Common Stock

Granahan Investment Management, LLC's Holding History (CIK: 0001026710)

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

Q3 2015

Shares 71,734 Value ($000) $991 Avg Close $16.62 Range $13.44 - $23.45

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2015	71,734	$991	$16.62	$13.44 - $23.45