<SEC-DOCUMENT>0001051470-23-000066.txt : 20230224
<SEC-HEADER>0001051470-23-000066.hdr.sgml : 20230224
<ACCEPTANCE-DATETIME>20230224174900
ACCESSION NUMBER:		0001051470-23-000066
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20230222
FILED AS OF DATE:		20230224
DATE AS OF CHANGE:		20230224

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Brown Jay A.
		CENTRAL INDEX KEY:			0001434756

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-16441
		FILM NUMBER:		23669110

	MAIL ADDRESS:	
		STREET 1:		8020 KATY FREEWAY
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77024

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CROWN CASTLE INC.
		CENTRAL INDEX KEY:			0001051470
		STANDARD INDUSTRIAL CLASSIFICATION:	REAL ESTATE INVESTMENT TRUSTS [6798]
		IRS NUMBER:				760470458
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		8020 KATY FREEWAY
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77024
		BUSINESS PHONE:		7135703000

	MAIL ADDRESS:	
		STREET 1:		8020 KATY FREEWAY
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77024

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CROWN CASTLE INTERNATIONAL CORP
		DATE OF NAME CHANGE:	19971215
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
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<DESCRIPTION>FORM 4
<TEXT>
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    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2023-02-22</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001051470</issuerCik>
        <issuerName>CROWN CASTLE INC.</issuerName>
        <issuerTradingSymbol>CCI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001434756</rptOwnerCik>
            <rptOwnerName>Brown Jay A.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>8020 KATY FREEWAY</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>HOUSTON</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>77024</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>President and CEO</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable></nonDerivativeTable>

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        <derivativeTransaction>
            <securityTitle>
                <value>Time RSUs</value>
            </securityTitle>
            <conversionOrExercisePrice>
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            <transactionDate>
                <value>2023-02-22</value>
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                <transactionCode>A</transactionCode>
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                    <value>33899</value>
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            <expirationDate>
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                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
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                    <value>33899.0</value>
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                <transactionCode>A</transactionCode>
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                <transactionPricePerShare>
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            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionAmounts>
                <transactionShares>
                    <value>37554</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
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                <sharesOwnedFollowingTransaction>
                    <value>37554</value>
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                <directOrIndirectOwnership>
                    <value>D</value>
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        </derivativeTransaction>
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    <footnotes>
        <footnote id="F1">Each Restricted Stock Unit (&quot;RSU&quot;) is issued pursuant to the Company's 2022 Long-Term Incentive Plan and represents a contingent right to receive one share of common stock, and vesting (i.e., forfeiture restriction termination) generally is subject to (i) the reporting person remaining an employee or director of the Company or its affiliates and (ii) the other criteria described in the footnotes below.</footnote>
        <footnote id="F2">33 1/3% of the Time RSUs vest on February 19 of each of 2024, 2025 and 2026.</footnote>
        <footnote id="F3">0% to 150% of these Relative TSR Performance RSUs may vest on February 19, 2026 based on the Company's annualized total stockholder return (&quot;TSR&quot;) performance ranking (&quot;TSR Rank&quot;) relative to the constituent companies of the Standard &amp; Poor's 500 Index for the three-year period ending December 31, 2025. The percentage of Relative TSR Performance RSUs that may vest will be (a) 0% if the TSR Rank is below the 30th percentile; (b) 50% if the TSR Rank is at the 30th percentile; (c) 100% if the TSR Rank is at the 55th percentile; and (d) 150% if the TSR Rank is at the 90th percentile or greater. If the TSR Rank is between the 30th and 55th percentiles or between the 55th and 90th percentiles, the percentage of Relative TSR Performance RSUs that may vest is determined using linear interpolation.</footnote>
        <footnote id="F4">0% to 150% of these Absolute TSR Performance RSUs may vest on February 19, 2026 based on the Company's annualized TSR for the three-year period ending December 31, 2025. The percentage of Absolute TSR Performance RSUs that may vest will be (a) 0% if TSR is below 6.5%; (b) 50% if TSR is 6.5%; (c) 100% if TSR is 11.5%; and (d) 150% if TSR is 16.5% or greater. If TSR is between 6.5% and 11.5% or between 11.5% and 16.5%, the percentage of Absolute TSR Performance RSUs that may vest is determined using linear interpolation.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Jay A. Brown</signatureName>
        <signatureDate>2023-02-24</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
