<SEC-DOCUMENT>0001108426-13-000026.txt : 20130308
<SEC-HEADER>0001108426-13-000026.hdr.sgml : 20130308
<ACCEPTANCE-DATETIME>20130308153128
ACCESSION NUMBER:		0001108426-13-000026
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20130306
FILED AS OF DATE:		20130308
DATE AS OF CHANGE:		20130308

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Darnell Ronald N.
		CENTRAL INDEX KEY:			0001536511

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-32462
		FILM NUMBER:		13677304

	MAIL ADDRESS:	
		STREET 1:		ALVARADO SQUARE - MS 0920
		CITY:			ALBUQUERQUE
		STATE:			NM
		ZIP:			87158

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PNM RESOURCES INC
		CENTRAL INDEX KEY:			0001108426
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRIC SERVICES [4911]
		IRS NUMBER:				850019030
		STATE OF INCORPORATION:			NM
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		414 SILVER AVE. SW
		CITY:			ALBUQUERQUE
		STATE:			NM
		ZIP:			87102-3289
		BUSINESS PHONE:		5052412700

	MAIL ADDRESS:	
		STREET 1:		414 SILVER AVE. SW
		STREET 2:		ATTN: MS 0905 - CATHY MARTINEZ
		CITY:			ALBUQUERQUE
		STATE:			NM
		ZIP:			87102-3289

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MANZANO CORP
		DATE OF NAME CHANGE:	20000303
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_136277466481144.xml
<DESCRIPTION>FORM 4
<TEXT>
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    <periodOfReport>2013-03-06</periodOfReport>

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    <issuer>
        <issuerCik>0001108426</issuerCik>
        <issuerName>PNM RESOURCES INC</issuerName>
        <issuerTradingSymbol>PNM</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001536511</rptOwnerCik>
            <rptOwnerName>Darnell Ronald N.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>CORPORATE HEADQUARTERS</rptOwnerStreet1>
            <rptOwnerStreet2>MS 1275</rptOwnerStreet2>
            <rptOwnerCity>ALBUQUERQUE</rptOwnerCity>
            <rptOwnerState>NM</rptOwnerState>
            <rptOwnerZipCode>87158-1275</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>SVP, PUBLIC POLICY</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
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            <transactionCoding>
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                <transactionCode>M</transactionCode>
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            <transactionAmounts>
                <transactionShares>
                    <value>3749</value>
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                <transactionPricePerShare>
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                <transactionPricePerShare>
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                <transactionAcquiredDisposedCode>
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        <nonDerivativeTransaction>
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                <value>Common Stock</value>
                <footnoteId id="F4"/>
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            <transactionCoding>
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                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionAmounts>
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                </directOrIndirectOwnership>
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        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Stock Options</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F5"/>
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                <footnoteId id="F6"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F7"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>3434.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
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                    <value>3434</value>
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                    <value>D</value>
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        </derivativeHolding>
        <derivativeTransaction>
            <securityTitle>
                <value>Restricted Stock Rights</value>
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                <footnoteId id="F8"/>
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            <transactionDate>
                <value>2013-03-06</value>
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                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionAmounts>
                <transactionShares>
                    <value>2650</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
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            <exerciseDate>
                <footnoteId id="F9"/>
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            <expirationDate>
                <footnoteId id="F9"/>
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                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
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                    <value>2650.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>6621</value>
                    <footnoteId id="F10"/>
                </sharesOwnedFollowingTransaction>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
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        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Represents the portion of a previous award of restricted stock rights that vested effective March 6, 2013.</footnote>
        <footnote id="F2">The performance shares were earned as of December 31, 2012, as determined effective February 28, 2013.</footnote>
        <footnote id="F3">Represents shares withheld by PNM Resources, Inc. to satisfy the tax withholding obligations arising in connection with the vesting of the restricted stock rights referenced in (1) above.  The company utilizes a modified &quot;share withholding&quot; approach in connection with settling awards of restricted stock rights upon vesting, in which it (i) withholds (in cash) the amount required to satisfy the tax withholding obligations and remits such amount to the relevant tax authorities, and (ii) directs a designated broker to purchase on the open market the number of shares of the company's common stock that can be acquired with the after-tax value of the vested restricted stock rights award at the prevailing market price.  Only these &quot;net shares&quot; are delivered to the recipient of the award.</footnote>
        <footnote id="F4">Represents shares withheld by PNM Resources, Inc. to satisfy the tax withholding obligations arising in connection with the settlement of the performance share award described in (2) above.  The company utilizes a modified &quot;share withholding&quot; approach in connection with settling awards of performance shares, in which it (i) withholds (in cash) the amount required to satisfy the tax withholding obligations and remits such amount to the relevant tax authorities, and (ii) directs a designated broker to purchase on the open market the number of shares of the company's common stock that can be acquired with the after-tax value of the performance share award at the prevailing market price.  Only these &quot;net shares&quot; are delivered to the recipient of the performance share award.</footnote>
        <footnote id="F5">Based on the closing price on the date of the grant.</footnote>
        <footnote id="F6">The options vest in three equal annual installments from grant date of issuance.</footnote>
        <footnote id="F7">The options expire 10 years from grant date.</footnote>
        <footnote id="F8">Each restricted stock right represents a contingent right to receive one share of PNM Resources, Inc. common stock.</footnote>
        <footnote id="F9">The restricted stock units vest in three equal annual installments, beginning on March 7, 2014.  Vested shares will be delivered to the reporting person on the applicable vesting dates (or, if the company is in a blackout period under its insider trading policy on any vesting date, at a later date after such blackout period ends).</footnote>
        <footnote id="F10">Includes 3,971 shares covered by unvested restricted stock rights that were previously reported in Table I.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Jim Acosta, POA for Ronald N. Darnell</signatureName>
        <signatureDate>2013-03-08</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</DOCUMENT>
</SEC-DOCUMENT>
