<SEC-DOCUMENT>0001050442-24-000006-index.html : 20240214
<SEC-HEADER>0001050442-24-000006.hdr.sgml : 20240214
<ACCEPTANCE-DATETIME>20240214121033
ACCESSION NUMBER:		0001050442-24-000006
CONFORMED SUBMISSION TYPE:	SC 13G/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20240214
DATE AS OF CHANGE:		20240214

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			GEOSPACE TECHNOLOGIES CORP
		CENTRAL INDEX KEY:			0001001115
		STANDARD INDUSTRIAL CLASSIFICATION:	MEASURING & CONTROLLING DEVICES, NEC [3829]
		ORGANIZATION NAME:           	08 Industrial Applications and Services
		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:		24634834

	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:			DISCIPLINED GROWTH INVESTORS INC /MN
		CENTRAL INDEX KEY:			0001050442
		ORGANIZATION NAME:           	
		IRS NUMBER:				411901233
		STATE OF INCORPORATION:			MN
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G/A

	BUSINESS ADDRESS:	
		STREET 1:		150 S 5TH ST
		STREET 2:		SUITE 2550
		CITY:			MINNEAPOLIS
		STATE:			MN
		ZIP:			55402
		BUSINESS PHONE:		6123174100

	MAIL ADDRESS:	
		STREET 1:		150 S. FIFTH ST
		STREET 2:		SUITE 2550
		CITY:			MINNEAPOLIS
		STATE:			MN
		ZIP:			55402
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G/A
<SEQUENCE>1
<FILENAME>GEOS_20231231.txt
<DESCRIPTION>FORM 13G/A GEOS 12-31-23
<TEXT>
Document 1 - file: GEOS_20231231.txt

</DOCUMENT>
</SEC-DOCUMENT>