<SEC-DOCUMENT>0000897077-17-000102.txt : 20170621
<SEC-HEADER>0000897077-17-000102.hdr.sgml : 20170621
<ACCEPTANCE-DATETIME>20170621145416
ACCESSION NUMBER:		0000897077-17-000102
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20170619
FILED AS OF DATE:		20170621
DATE AS OF CHANGE:		20170621

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ALAMO GROUP INC
		CENTRAL INDEX KEY:			0000897077
		STANDARD INDUSTRIAL CLASSIFICATION:	FARM MACHINERY & EQUIPMENT [3523]
		IRS NUMBER:				741621248
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1627 E WALNUT
		CITY:			SEGUIN
		STATE:			TX
		ZIP:			78155
		BUSINESS PHONE:		8303791480

	MAIL ADDRESS:	
		STREET 1:		P.O. BOX 549
		STREET 2:		1627 EAST WALNUT
		CITY:			SEGUIN
		STATE:			TX
		ZIP:			78155

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Grzelak David W
		CENTRAL INDEX KEY:			0001371538

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-13854
		FILM NUMBER:		17922712

	MAIL ADDRESS:	
		STREET 1:		1502 E WALNUT ST
		CITY:			SEGUIN
		STATE:			TX
		ZIP:			78155
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_149807124149969.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2017-06-19</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000897077</issuerCik>
        <issuerName>ALAMO GROUP INC</issuerName>
        <issuerTradingSymbol>ALG</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001371538</rptOwnerCik>
            <rptOwnerName>Grzelak David W</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1627 E WALNUT ST</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>SEGUIN,</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>78155</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2017-06-19</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>2201</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>92.1814</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1325</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>5000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>Dave Grzelak Revocable Living Trust</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1406</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>M. Diane Grzelak Trust</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $91.661 to $92.41, inclusive. The reporting person undertakes to provide to Alamo Group Inc, any security holder of Alamo Group Inc, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote(1) to this Form 4.</footnote>
        <footnote id="F2">Held in M. Diane Grzelak Trust, Diane Grzelak, Trustee.</footnote>
    </footnotes>

    <remarks>Ex. 24 - Power of Attorney (incorporated by reference to the Power of Attorney filed as Exhibit 24 to the Form 4 filed by the reporting person on May 11, 2016)</remarks>

    <ownerSignature>
        <signatureName>/s/ Carol Worthy, attorney-in-fact</signatureName>
        <signatureDate>2017-06-21</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
