GEOSPACE TECHNOLOGIES CORP

Ticker: GEOS CUSIP: 37364X109 Class: Common Stock

WELLINGTON MANAGEMENT GROUP LLP's Holding History (CIK: 0000902219)

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

Q1 2015

Shares 20,002 Value ($000) $330 Avg Close $20.77 Range $14.95 - $28.88

Q4 2014

Shares 32,370 Value ($000) $858 Avg Close $29.00 Range $24.07 - $35.32

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2015	20,002	$330	$20.77	$14.95 - $28.88
Q4 2014	32,370	$858	$29.00	$24.07 - $35.32