<SEC-DOCUMENT>0001136893-19-000170.txt : 20190917
<SEC-HEADER>0001136893-19-000170.hdr.sgml : 20190917
<ACCEPTANCE-DATETIME>20190917161436
ACCESSION NUMBER:		0001136893-19-000170
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20190916
FILED AS OF DATE:		20190917
DATE AS OF CHANGE:		20190917

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Drucker Charles
		CENTRAL INDEX KEY:			0001331563

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-16427
		FILM NUMBER:		191097280

	MAIL ADDRESS:	
		STREET 1:		38 FOUNTAIN SQUARE PLAZA
		STREET 2:		MD 10AT76
		CITY:			CINCINNATI
		STATE:			OH
		ZIP:			45263

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Fidelity National Information Services, Inc.
		CENTRAL INDEX KEY:			0001136893
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-BUSINESS SERVICES, NEC [7389]
		IRS NUMBER:				371490331
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		601 RIVERSIDE AVENUE
		CITY:			JACKSONVILLE
		STATE:			FL
		ZIP:			32204
		BUSINESS PHONE:		904-438-6365

	MAIL ADDRESS:	
		STREET 1:		601 RIVERSIDE AVENUE
		CITY:			JACKSONVILLE
		STATE:			FL
		ZIP:			32204

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CERTEGY INC
		DATE OF NAME CHANGE:	20010607

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	EQUIFAX PS INC
		DATE OF NAME CHANGE:	20010315
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_156875126091287.xml
<DESCRIPTION>FORM 4
<TEXT>
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    <periodOfReport>2019-09-16</periodOfReport>

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    <issuer>
        <issuerCik>0001136893</issuerCik>
        <issuerName>Fidelity National Information Services, Inc.</issuerName>
        <issuerTradingSymbol>FIS</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001331563</rptOwnerCik>
            <rptOwnerName>Drucker Charles</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>601 RIVERSIDE AVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>JACKSONVILLE</rptOwnerCity>
            <rptOwnerState>FL</rptOwnerState>
            <rptOwnerZipCode>32204</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

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                <value>Common Stock</value>
            </securityTitle>
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            </transactionDate>
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                <transactionPricePerShare>
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            <securityTitle>
                <value>Common Stock</value>
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            <transactionDate>
                <value>2019-09-16</value>
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        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
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            <transactionDate>
                <value>2019-09-17</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
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                    <value>62816</value>
                </transactionShares>
                <transactionPricePerShare>
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                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
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                <sharesOwnedFollowingTransaction>
                    <value>481332</value>
                </sharesOwnedFollowingTransaction>
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                <directOrIndirectOwnership>
                    <value>D</value>
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        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2019-09-17</value>
            </transactionDate>
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                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
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                <transactionShares>
                    <value>54374</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>134.09</value>
                    <footnoteId id="F5"/>
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            <transactionDate>
                <value>2019-09-17</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
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                <transactionShares>
                    <value>8442</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>135.04</value>
                    <footnoteId id="F6"/>
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                <transactionAcquiredDisposedCode>
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                    <value>418516</value>
                </sharesOwnedFollowingTransaction>
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                    <value>D</value>
                </directOrIndirectOwnership>
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        </nonDerivativeTransaction>
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    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Option (Right to Buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>21.74</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2019-09-16</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>115000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>21.74</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2017-02-27</value>
            </exerciseDate>
            <expirationDate>
                <value>2023-02-27</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>115000.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>62816</value>
                </sharesOwnedFollowingTransaction>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
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        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Option (Right to Buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>21.74</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2019-09-17</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>62816</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>21.74</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2017-02-27</value>
            </exerciseDate>
            <expirationDate>
                <value>2023-02-27</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>62816.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
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        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Transacted pursuant to a Rule 10b5-1 Plan adopted by the reporting person on August 14, 2019, which is now complete.</footnote>
        <footnote id="F2">The transaction was executed in multiple trades at prices ranging from $130.71 to $131.69. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or any security holder of the issuer, full information regarding the shares sold at each separate price.</footnote>
        <footnote id="F3">The transaction was executed in multiple trades at prices ranging from $131.86 to $132.86. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or any security holder of the issuer, full information regarding the shares sold at each separate price.</footnote>
        <footnote id="F4">The transaction was executed in multiple trades at prices ranging from $132.875 to $133.68. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or any security holder of the issuer, full information regarding the shares sold at each separate price.</footnote>
        <footnote id="F5">The transaction was executed in multiple trades at prices ranging from $133.69 to $134.68.  The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or any security holder of the issuer, full information regarding the shares sold at each separate price.</footnote>
        <footnote id="F6">The transaction was executed in multiple trades at prices ranging from $134.735 to $135.47. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or any security holder of the issuer, full information regarding the shares sold at each separate price.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Charles H. Keller, attorney-in-fact for Charles D. Drucker</signatureName>
        <signatureDate>2019-09-17</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
