<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2021-11-29</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000100493</issuerCik>
        <issuerName>TYSON FOODS, INC.</issuerName>
        <issuerTradingSymbol>TSN</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001725741</rptOwnerCik>
            <rptOwnerName>Tu Amy</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>2200 W DON TYSON PARKWAY</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>SPRINGDALE</rptOwnerCity>
            <rptOwnerState>AR</rptOwnerState>
            <rptOwnerZipCode>72762</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>EVP&amp;Chief Legal Officer</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Class A Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2021-11-29</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>13261.949</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>60353.502</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Class A Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2021-11-29</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F2"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>6002</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>81.34</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>54351.502</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Class A Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2021-11-29</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F3"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>2863</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>81.34</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>51488.502</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Performance Shares</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F4"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2021-11-29</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>23561.09</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F4"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F4"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class A Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>23561.09</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">On November 19, 2018 the Reporting Person received a grant of 23,561.09 performance shares which vested or expired on November 29, 2021 subject to the achievement of performance criteria in the applicable Stock Incentive Agreement. The performance criteria were (a) a cumulative operating income target of $9,986 million for the 2019-2021 fiscal years and (b) a favorable comparison of the relative shareholder return of the Issuer's Class A Common Stock compared to a predetermined peer group of publicly traded companies over the 2019-2021 fiscal years. The performance shares could vest at a level of 50%-200% per performance criteria and were previously reported in the aggregate as derivative securities at the 200% level. On November 29, 2021, 13,261.949 shares vested and are reported herein as acquired non-derivatives securities and the remainder of the award expired.</footnote>
        <footnote id="F2">Pursuant to the terms of the award agreement, these shares were withheld by the Issuer to satisfy tax withholding obligations related to the vesting described in footnote 1.</footnote>
        <footnote id="F3">On November 29, 2021, 6,325.414 shares of restricted Class A Common Stock vested. These shares were previously reported as beneficially owned by the Reporting Person. Pursuant to the terms of the award agreement, 2,863 shares were withheld by the Issuer to satisfy tax withholding obligations.</footnote>
        <footnote id="F4">A portion of these performance shares vested as described in footnote 1. The remainder of the award expired.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Mark Liberman by Power of Attorney for Amy Tu</signatureName>
        <signatureDate>2021-11-30</signatureDate>
    </ownerSignature>
</ownershipDocument>
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X0306
4
2021-11-29
0
0000100493
TYSON FOODS, INC.
TSN
0001725741
Tu Amy
2200 W DON TYSON PARKWAY
SPRINGDALE
AR
72762
0
1
0
0
EVP&Chief Legal Officer
Class A Common Stock
2021-11-29
4
M
0
13261.949
0
A
60353.502
D
Class A Common Stock
2021-11-29
4
F
0
6002
81.34
D
54351.502
D
Class A Common Stock
2021-11-29
4
F
0
2863
81.34
D
51488.502
D
Performance Shares
2021-11-29
4
M
0
23561.09
0
D
Class A Common Stock
23561.09
0
D
On November 19, 2018 the Reporting Person received a grant of 23,561.09 performance shares which vested or expired on November 29, 2021 subject to the achievement of performance criteria in the applicable Stock Incentive Agreement. The performance criteria were (a) a cumulative operating income target of $9,986 million for the 2019-2021 fiscal years and (b) a favorable comparison of the relative shareholder return of the Issuer's Class A Common Stock compared to a predetermined peer group of publicly traded companies over the 2019-2021 fiscal years. The performance shares could vest at a level of 50%-200% per performance criteria and were previously reported in the aggregate as derivative securities at the 200% level. On November 29, 2021, 13,261.949 shares vested and are reported herein as acquired non-derivatives securities and the remainder of the award expired.
Pursuant to the terms of the award agreement, these shares were withheld by the Issuer to satisfy tax withholding obligations related to the vesting described in footnote 1.
On November 29, 2021, 6,325.414 shares of restricted Class A Common Stock vested. These shares were previously reported as beneficially owned by the Reporting Person. Pursuant to the terms of the award agreement, 2,863 shares were withheld by the Issuer to satisfy tax withholding obligations.
A portion of these performance shares vested as described in footnote 1. The remainder of the award expired.
/s/ Mark Liberman by Power of Attorney for Amy Tu
2021-11-30