<SEC-DOCUMENT>0001398344-18-008754-index.html : 20180608
<SEC-HEADER>0001398344-18-008754.hdr.sgml : 20180608
<ACCEPTANCE-DATETIME>20180608091953
ACCESSION NUMBER:		0001398344-18-008754
CONFORMED SUBMISSION TYPE:	SC 13G/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20180608
DATE AS OF CHANGE:		20180608

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			GEOSPACE TECHNOLOGIES CORP
		CENTRAL INDEX KEY:			0001001115
		STANDARD INDUSTRIAL CLASSIFICATION:	MEASURING & CONTROLLING DEVICES, NEC [3829]
		IRS NUMBER:				760447780
		STATE OF INCORPORATION:			TX
		FISCAL YEAR END:			0930

	FILING VALUES:
		FORM TYPE:		SC 13G/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-52075
		FILM NUMBER:		18888198

	BUSINESS ADDRESS:	
		STREET 1:		7007 PINEMONT DR.
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77040
		BUSINESS PHONE:		7139864444

	MAIL ADDRESS:	
		STREET 1:		7007 PINEMONT DR.
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77040

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	OYO GEOSPACE CORP
		DATE OF NAME CHANGE:	19950919

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BROWN CAPITAL MANAGEMENT LLC
		CENTRAL INDEX KEY:			0000885062
		IRS NUMBER:				521304372
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G/A

	BUSINESS ADDRESS:	
		STREET 1:		1201 N CALVERT ST
		CITY:			BALTIMORE
		STATE:			MD
		ZIP:			21201
		BUSINESS PHONE:		4108373234

	MAIL ADDRESS:	
		STREET 1:		1201 N CALVERT STREET
		CITY:			BALTIMORE
		STATE:			MD
		ZIP:			21202

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	BROWN CAPITAL MANAGEMENT INC
		DATE OF NAME CHANGE:	19990325
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G/A
<SEQUENCE>1
<FILENAME>fp0033867_sc13ga.htm
<TEXT>
Document 1 - file: fp0033867_sc13ga.htm

</DOCUMENT>
</SEC-DOCUMENT>