<SEC-DOCUMENT>0001181431-12-055458.txt : 20121024
<SEC-HEADER>0001181431-12-055458.hdr.sgml : 20121024
<ACCEPTANCE-DATETIME>20121024205956
ACCESSION NUMBER:		0001181431-12-055458
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20121022
FILED AS OF DATE:		20121024
DATE AS OF CHANGE:		20121024

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			SHEEN MICHAEL J
		CENTRAL INDEX KEY:			0001049654

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-13601
		FILM NUMBER:		121159897

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

ISSUER:		

	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:			DE
		FISCAL YEAR END:			0930

	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
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>rrd358589.xml
<DESCRIPTION>M. SHEEN EXERCISE OF OPTIONS
<TEXT>
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        <issuerName>GEOSPACE TECHNOLOGIES CORP</issuerName>
        <issuerTradingSymbol>GEOS</issuerTradingSymbol>
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            <rptOwnerName>SHEEN MICHAEL J</rptOwnerName>
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        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
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                <value>Common Stock, par value $.01 per share</value>
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            <transactionDate>
                <value>2012-10-23</value>
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                <transactionPricePerShare>
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        </nonDerivativeTransaction>
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    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Options (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>8.78</value>
            </conversionOrExercisePrice>
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                <value>2012-10-22</value>
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            <transactionCoding>
                <transactionFormType>4</transactionFormType>
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                <footnoteId id="F3"/>
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            <transactionAmounts>
                <transactionShares>
                    <value>23156</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>8.78</value>
                    <footnoteId id="F5"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2012-12-05</value>
                <footnoteId id="F4"/>
            </exerciseDate>
            <expirationDate>
                <value>2018-12-05</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>23156</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
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                <sharesOwnedFollowingTransaction>
                    <value>15000</value>
                    <footnoteId id="F6"/>
                </sharesOwnedFollowingTransaction>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">These shares were issued upon the exercise of options (described in Table II) and then immediately sold pursuant to Rule 10b5-1 trading plans adopted by the reporting person.</footnote>
        <footnote id="F2">The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $68.57 to $68.63, inclusive. The reporting person undertakes to provide to OYO Geospace Corporation, any security holder of OYO Geospace Corporation, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.</footnote>
        <footnote id="F3">The shares that were issued upon the exercise of options were immediately sold, as is presented in Table I.</footnote>
        <footnote id="F4">This option will become exercisable in four equal annual installments, and will be fully exercisable on December 5, 2012.</footnote>
        <footnote id="F5">Pursuant to General Instruction C(iii) of Form 4, the exercise price is reported in column 2 of this Table II</footnote>
        <footnote id="F6">On October 18, 2012, the common stock of Geospace Corporation split 2-for-1, resulting in the reporting person's ownership of 20,738 additional shares of common stock and 19,078 additional options whose strike price was reduced to $8.78.</footnote>
        <footnote id="F7">The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $66.60 to $67.57, inclusive. The reporting person undertakes to provide to OYO Geospace Corporation, any security holder of OYO Geospace Corporation, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.</footnote>
        <footnote id="F8">The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $65.54 to $66.51, inclusive. The reporting person undertakes to provide to OYO Geospace Corporation, any security holder of OYO Geospace Corporation, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.</footnote>
        <footnote id="F9">The sales reported in this Form 4 were effected pursuant to Rule 10b5-1 trading plans adopted by the reporting person.</footnote>
        <footnote id="F10">The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $64.07 to $65.05, inclusive. The reporting person undertakes to provide to OYO Geospace Corporation, any security holder of OYO Geospace Corporation, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.</footnote>
        <footnote id="F11">The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $65.08 to $65.65, inclusive. The reporting person undertakes to provide to OYO Geospace Corporation, any security holder of OYO Geospace Corporation, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.</footnote>
        <footnote id="F12">The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $63.60 to $64.09, inclusive. The reporting person undertakes to provide to OYO Geospace Corporation, any security holder of OYO Geospace Corporation, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.</footnote>
        <footnote id="F13">The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $64.34 to $65.33, inclusive. The reporting person undertakes to provide to OYO Geospace Corporation, any security holder of OYO Geospace Corporation, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.</footnote>
        <footnote id="F14">The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $65.49 to $66.00, inclusive. The reporting person undertakes to provide to OYO Geospace Corporation, any security holder of OYO Geospace Corporation, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Michael Sheen</signatureName>
        <signatureDate>2012-10-24</signatureDate>
    </ownerSignature>
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</SEC-DOCUMENT>
