GEOSPACE TECHNOLOGIES CORP

Ticker: GEOS CUSIP: 37364X109 Class: Common Stock

WESTFIELD CAPITAL MANAGEMENT CO LP's Holding History (CIK: 0001177719)

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

Q4 2013

Shares 226,870 Value ($000) $21,470 Avg Close $91.95 Range $79.60 - $107.93

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2013	226,870	$21,470	$91.95	$79.60 - $107.93