<SEC-DOCUMENT>0001659213-18-000002-index.html : 20180403
<SEC-HEADER>0001659213-18-000002.hdr.sgml : 20180403
<ACCEPTANCE-DATETIME>20180403125715
ACCESSION NUMBER:		0001659213-18-000002
CONFORMED SUBMISSION TYPE:	SC 13D
PUBLIC DOCUMENT COUNT:		3
FILED AS OF DATE:		20180403
DATE AS OF CHANGE:		20180403

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 13D
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-52075
		FILM NUMBER:		18732398

	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:			Lemelson Capital Management LLC
		CENTRAL INDEX KEY:			0001659213
		IRS NUMBER:				460610458
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13D

	BUSINESS ADDRESS:	
		STREET 1:		225 CEDAR HILL STREET
		STREET 2:		SUITE 200
		CITY:			MARLBOROUGH
		STATE:			MA
		ZIP:			01752
		BUSINESS PHONE:		508-63-2281

	MAIL ADDRESS:	
		STREET 1:		225 CEDAR HILL STREET
		STREET 2:		SUITE 200
		CITY:			MARLBOROUGH
		STATE:			MA
		ZIP:			01752
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13D
<SEQUENCE>1
<FILENAME>lemelsongeos2018form13dexv1.txt
<DESCRIPTION>SC 13D FILING STATEMENT
<TEXT>
Document 1 - file: lemelsongeos2018form13dexv1.txt

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-1
<SEQUENCE>2
<FILENAME>lemelsongeospacejointfiling.txt
<DESCRIPTION>JOINT FILING STATEMENT
<TEXT>
Document 2 - file: lemelsongeospacejointfiling.txt

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-2
<SEQUENCE>3
<FILENAME>lettertobodgeosmanagement.txt
<DESCRIPTION>LETTER TO BOARD OF DIRECTORS
<TEXT>
Document 3 - file: lettertobodgeosmanagement.txt

</DOCUMENT>
</SEC-DOCUMENT>