<?xml version="1.0"?>
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    <schemaVersion>X0306</schemaVersion>

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    <periodOfReport>2020-11-20</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001722101</rptOwnerCik>
            <rptOwnerName>Banks Samuel Dean Jr</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>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>President and CEO</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

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                <value>Class A Common Stock</value>
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                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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                <transactionAcquiredDisposedCode>
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                <value>Class A Common Stock</value>
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                <equitySwapInvolved>0</equitySwapInvolved>
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                <transactionAcquiredDisposedCode>
                    <value>A</value>
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                    <value>55178.858</value>
                    <footnoteId id="F4"/>
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                <directOrIndirectOwnership>
                    <value>D</value>
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                <value>2020-11-20</value>
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                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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                <transactionAcquiredDisposedCode>
                    <value>A</value>
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            <expirationDate>
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                    <value>Class A Common Stock</value>
                </underlyingSecurityTitle>
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                    <value>98781.692</value>
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                    <value>98781.692</value>
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                    <value>D</value>
                </directOrIndirectOwnership>
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        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Non-Qualified Stock Options (Right to Buy)</value>
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            <conversionOrExercisePrice>
                <value>60.74</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2020-11-20</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F6"/>
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            <transactionAmounts>
                <transactionShares>
                    <value>125945</value>
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                <transactionPricePerShare>
                    <value>0</value>
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                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
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            <exerciseDate>
                <value>2021-11-20</value>
            </exerciseDate>
            <expirationDate>
                <value>2030-11-20</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class A Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
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                    <value>125945</value>
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        </derivativeTransaction>
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    <footnotes>
        <footnote id="F1">Restricted Stock award of Class A Common Stock which vests on November 20, 2023.</footnote>
        <footnote id="F2">Includes 4,927.901 shares of the Issuer's Class A Common Stock acquired by the Reporting Person pursuant to the Deferred Fee Plan for Directors, which shares shall vest 180 days after termination of the Reporting Person's service as a member of the Issuer's board of directors; 11,973.051 shares of Class A Common Stock which vest on November 18, 2022 if the performance metric described in the applicable Stock Incentive Agreement (&quot;SIA&quot;) is achieved and 24,695.423 shares of Restricted Stock which vest on November 20, 2023.</footnote>
        <footnote id="F3">Award of restricted stock units (&quot;RSUs&quot;) which vest in equal annual increments on each of the first and second anniversary dates of the grant and become fully vested after two years. Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock.</footnote>
        <footnote id="F4">Includes 4,927.901 shares of the Issuer's Class A Common Stock acquired by the Reporting Person pursuant to the Deferred Fee Plan for Directors, which shares shall vest 180 days after termination of the Reporting Person's service as a member of the Issuer's board of directors; 11,973.051 shares of Class A Common Stock which vest on November 18, 2022 if the performance metric described in the applicable SIA is achieved; 13,582.483 RSUs which vest in equal annual installments on each of the first and second anniversary dates of the grant and become fully vested on November 20, 2022; and 24,695.423 shares of Restricted Stock which vest on November 20, 2023.</footnote>
        <footnote id="F5">Award of performance Class A Common Stock which vests on November 20, 2023 if the performance metrics described in the applicable SIA are achieved. The performance metrics set forth in the SIA are (1) achievement of a three year (fiscal 2021-2023) cumulative operating income target and (2) a favorable comparison of the relative total shareholder return of the Issuer's Class A Common Stock compared to a predetermined peer group of publicly traded companies over a three year (fiscal 2021-2023) period. Subject to the achievement of the performance metrics, the performance shares could vest at a level of 50 to 200 percent and are reported as derivative securities at the 200 percent level. If neither of the performance metrics are achieved, the award expires.</footnote>
        <footnote id="F6">These options vest in equal annual increments on each of the first, second and third anniversary dates of the grant and become fully vested after three years.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ R. Read Hudson as Power of Attorney for Samuel Dean Banks, Jr.</signatureName>
        <signatureDate>2020-11-24</signatureDate>
    </ownerSignature>
</ownershipDocument>
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X0306
4
2020-11-20
0
0000100493
TYSON FOODS, INC.
TSN
0001722101
Banks Samuel Dean Jr
2200 W DON TYSON PARKWAY
SPRINGDALE
AR
72762
1
1
0
0
President and CEO
Class A Common Stock
2020-11-20
4
A
0
24695.423
0
A
41596.375
D
Class A Common Stock
2020-11-20
4
A
0
13582.483
0
A
55178.858
D
Performance Shares
2020-11-20
4
A
0
98781.692
A
Class A Common Stock
98781.692
98781.692
D
Non-Qualified Stock Options (Right to Buy)
60.74
2020-11-20
4
A
0
125945
0
A
2021-11-20
2030-11-20
Class A Common Stock
125945.0
125945
D
Restricted Stock award of Class A Common Stock which vests on November 20, 2023.
Includes 4,927.901 shares of the Issuer's Class A Common Stock acquired by the Reporting Person pursuant to the Deferred Fee Plan for Directors, which shares shall vest 180 days after termination of the Reporting Person's service as a member of the Issuer's board of directors; 11,973.051 shares of Class A Common Stock which vest on November 18, 2022 if the performance metric described in the applicable Stock Incentive Agreement ("SIA") is achieved and 24,695.423 shares of Restricted Stock which vest on November 20, 2023.
Award of restricted stock units ("RSUs") which vest in equal annual increments on each of the first and second anniversary dates of the grant and become fully vested after two years. Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock.
Includes 4,927.901 shares of the Issuer's Class A Common Stock acquired by the Reporting Person pursuant to the Deferred Fee Plan for Directors, which shares shall vest 180 days after termination of the Reporting Person's service as a member of the Issuer's board of directors; 11,973.051 shares of Class A Common Stock which vest on November 18, 2022 if the performance metric described in the applicable SIA is achieved; 13,582.483 RSUs which vest in equal annual installments on each of the first and second anniversary dates of the grant and become fully vested on November 20, 2022; and 24,695.423 shares of Restricted Stock which vest on November 20, 2023.
Award of performance Class A Common Stock which vests on November 20, 2023 if the performance metrics described in the applicable SIA are achieved. The performance metrics set forth in the SIA are (1) achievement of a three year (fiscal 2021-2023) cumulative operating income target and (2) a favorable comparison of the relative total shareholder return of the Issuer's Class A Common Stock compared to a predetermined peer group of publicly traded companies over a three year (fiscal 2021-2023) period. Subject to the achievement of the performance metrics, the performance shares could vest at a level of 50 to 200 percent and are reported as derivative securities at the 200 percent level. If neither of the performance metrics are achieved, the award expires.
These options vest in equal annual increments on each of the first, second and third anniversary dates of the grant and become fully vested after three years.
/s/ R. Read Hudson as Power of Attorney for Samuel Dean Banks, Jr.
2020-11-24