<SEC-DOCUMENT>0001758766-23-000107.txt : 20230724
<SEC-HEADER>0001758766-23-000107.hdr.sgml : 20230724
<ACCEPTANCE-DATETIME>20230724164009
ACCESSION NUMBER:		0001758766-23-000107
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20230713
FILED AS OF DATE:		20230724
DATE AS OF CHANGE:		20230724

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Tappin Matthew
		CENTRAL INDEX KEY:			0001986259

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39455
		FILM NUMBER:		231105500

	MAIL ADDRESS:	
		STREET 1:		100 CALIFORNIA STREET
		STREET 2:		14TH FLOOR
		CITY:			SAN FRANCISCO
		STATE:			CA
		ZIP:			94111

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			STEM, INC.
		CENTRAL INDEX KEY:			0001758766
		STANDARD INDUSTRIAL CLASSIFICATION:	MISCELLANEOUS ELECTRICAL MACHINERY, EQUIPMENT & SUPPLIES [3690]
		IRS NUMBER:				264466193
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		100 CALIFORNIA STREET, 14TH FLOOR
		CITY:			SAN FRANCISCO
		STATE:			CA
		ZIP:			94111
		BUSINESS PHONE:		(415) 937-7836

	MAIL ADDRESS:	
		STREET 1:		100 CALIFORNIA STREET, 14TH FLOOR
		CITY:			SAN FRANCISCO
		STATE:			CA
		ZIP:			94111

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Star Peak Energy Transition Corp.
		DATE OF NAME CHANGE:	20200714

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Star Peak Energy Acquisition Corp.
		DATE OF NAME CHANGE:	20181119

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Roaring Fork Acquisition Corp.
		DATE OF NAME CHANGE:	20181109
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>wf-form3_169023119636119.xml
<DESCRIPTION>FORM 3
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2023-07-13</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001758766</issuerCik>
        <issuerName>STEM, INC.</issuerName>
        <issuerTradingSymbol>STEM</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001986259</rptOwnerCik>
            <rptOwnerName>Tappin Matthew</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>100 CALIFORNIA STREET</rptOwnerStreet1>
            <rptOwnerStreet2>14TH FLOOR</rptOwnerStreet2>
            <rptOwnerCity>SAN FRANCISCO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94111</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>President, Asset Management</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable></nonDerivativeTable>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Restricted Stock Unit</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F2"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F1"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock, Par Value $0.0001 Per Share</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>133745.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Stock Option (Right to Buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>10.25</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F3"/>
            </exerciseDate>
            <expirationDate>
                <value>2033-02-15</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock, Par Value $0.0001 Per Share</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>95187.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Stock Option (Right to Buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>9.33</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F4"/>
            </exerciseDate>
            <expirationDate>
                <value>2032-03-01</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock, Par Value $0.0001 Per Share</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>83735.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Stock Option (Right to Buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>25.34</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F5"/>
            </exerciseDate>
            <expirationDate>
                <value>2031-05-28</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock, Par Value $0.0001 Per Share</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>9249.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">14,318 Restricted Stock Units (RSUs) will vest 100% on December 31, 2023.  73,684 RSUs will vest in three equal annual installments beginning on February 15, 2024.  40,193 RSUs will vest in three equal annual installments beginning on March 1, 2024.  5,550 RSUs will vest in two equal annual installments beginning on May 24, 2024.</footnote>
        <footnote id="F2">Each RSU represents the contingent right to receive one (1) share of common stock, par value $0.0001 per share.</footnote>
        <footnote id="F3">The option award will vest in three equal annual installments beginning on February 15, 2024.</footnote>
        <footnote id="F4">20,933 options are currently exercisable. The remaining options will vest in three equal annual installments beginning March 1, 2024.</footnote>
        <footnote id="F5">4,625 options are currently exercisable.  The remaining options will vest in two equal annual installments beginning on May 24, 2024.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Kathy Medford, Attorney-in-Fact</signatureName>
        <signatureDate>2023-07-24</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>mtappinpoa-forms345and144t.htm
<DESCRIPTION>TAPPIN POA TXT
<TEXT>
<!-- Document created using Workiva -->
<html>
<body>
<pre>
STEM, INC.
LIMITED POWER OF ATTORNEY
      The undersigned, in his capacity as a director or officer, or both, of Stem, Inc., a Delaware corporation (the "Company"), does hereby appoint each of William Bush, Saul R. Laureles and Kathy Medford, or any of them acting singly, as his true and lawful attorneys-in-fact with full power of substitution, to (a) prepare, execute in the undersigned's name and on the undersigned's behalf, and submit to the U.S. Securities and Exchange Commission (the "SEC") a Form ID, including amendments thereto, and any other documents necessary or appropriate to obtain codes, passwords and passphrases enabling the undersigned to make electronic filings with the SEC of reports required by Section 16(a) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or any rule or regulation of the SEC; and (b) execute for and on behalf of the undersigned, in the undersigned's capacity as a director or officer, or both, of the Company, Forms 3, 4 and 5 in accordance with Section 16 of the Exchange Act, as well as Forms 144, and complete and execute any amendment or amendments thereto, and to file the same or cause the same to be filed with the SEC.
      This Power of Attorney supersedes any and all prior and existing powers of attorney signed by the undersigned with respect to the subject matter hereof, and shall remain in full force and effect until the undersigned is no longer required to file Forms 3, 4, 5 or 144 with respect to the undersigned's holdings of and transactions in securities
issued by the Company, unless earlier revoked by the undersigned in a signed writing delivered to the foregoing attorneys-in-fact.

July 19, 2023

  /s/ Matthew Tappin
Matthew Tappin

</pre>
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</SEC-DOCUMENT>
