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    <periodOfReport>2026-07-13</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000928876</issuerCik>
        <issuerName>TOWER SEMICONDUCTOR LTD</issuerName>
        <issuerTradingSymbol>TSEM</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0002129121</rptOwnerCik>
            <rptOwnerName>Ellwanger Russell Craig</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerNonUSAddressFlag>false</rptOwnerNonUSAddressFlag>
            <rptOwnerStreet1>288 COUNTY ROAD #127</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>BEDFORD</rptOwnerCity>
            <rptOwnerState>WY</rptOwnerState>
            <rptOwnerZipCode>83112</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Executive Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

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            <transactionTimeliness>
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            </transactionTimeliness>
            <transactionAmounts>
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                </transactionShares>
                <transactionPricePerShare>
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                </transactionShares>
                <transactionPricePerShare>
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            <transactionTimeliness>
                <value></value>
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            <transactionAmounts>
                <transactionShares>
                    <value>9797</value>
                </transactionShares>
                <transactionPricePerShare>
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            <transactionDate>
                <value>2026-07-13</value>
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            <transactionTimeliness>
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            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
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                </transactionShares>
                <transactionPricePerShare>
                    <value>213.8328</value>
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        <nonDerivativeTransaction>
            <securityTitle>
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            <transactionDate>
                <value>2026-07-13</value>
            </transactionDate>
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                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>3025</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>217.9321</value>
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                <transactionAcquiredDisposedCode>
                    <value>D</value>
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        <nonDerivativeTransaction>
            <securityTitle>
                <value>Ordinary Shares</value>
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            <transactionDate>
                <value>2026-07-13</value>
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                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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                <value></value>
            </transactionTimeliness>
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                <transactionShares>
                    <value>2118</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>219.01</value>
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                <transactionAcquiredDisposedCode>
                    <value>D</value>
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                <sharesOwnedFollowingTransaction>
                    <value>722397</value>
                </sharesOwnedFollowingTransaction>
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        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Ordinary Shares</value>
            </securityTitle>
            <transactionDate>
                <value>2026-07-13</value>
            </transactionDate>
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                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>4936</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>219.8235</value>
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                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
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                <sharesOwnedFollowingTransaction>
                    <value>717461</value>
                </sharesOwnedFollowingTransaction>
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                <directOrIndirectOwnership>
                    <value>D</value>
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        <nonDerivativeTransaction>
            <securityTitle>
                <value>Ordinary Shares</value>
            </securityTitle>
            <transactionDate>
                <value>2026-07-13</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
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            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>4772</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>220.8834</value>
                    <footnoteId id="F9"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
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                <sharesOwnedFollowingTransaction>
                    <value>712689</value>
                </sharesOwnedFollowingTransaction>
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                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
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        <nonDerivativeTransaction>
            <securityTitle>
                <value>Ordinary Shares</value>
            </securityTitle>
            <transactionDate>
                <value>2026-07-13</value>
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                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
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            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1856</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>222.4827</value>
                    <footnoteId id="F10"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
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                <sharesOwnedFollowingTransaction>
                    <value>710833</value>
                </sharesOwnedFollowingTransaction>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
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        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Ordinary Shares</value>
            </securityTitle>
            <transactionDate>
                <value>2026-07-13</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>2510</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>234.7107</value>
                    <footnoteId id="F11"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
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                <sharesOwnedFollowingTransaction>
                    <value>708323</value>
                </sharesOwnedFollowingTransaction>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
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    <footnotes>
        <footnote id="F1">The sales reported in this Form 4 relate to restricted stock units, each of which represents a contingent right to receive one share of ordinary stock of Tower Semiconductor Ltd. (the &quot;Company&quot;), that the Reporting Person was granted more than 3 years ago, hence all has become fully vested; the sale was effected pursuant to a pre-arranged, pre-scheduled order instruction established by the Reporting Person on March 12, 2026, when the reporting Person was not in possession of material non-public information.</footnote>
        <footnote id="F2">The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $210.33 to $211.27. These shares were sold on the Tel Aviv Stock Exchange in New Israeli Shekels (ILS). The exchange rate in effect on the transaction date was 3.025 ILS to $1.000 . The reporting person undertakes to provide full information regarding the number of shares sold at each separate price upon request</footnote>
        <footnote id="F3">The price reported is a weighted average price. These shares were sold in multiple transactions ranging from  $211.37 to $212.36. These shares were sold on the Tel Aviv Stock Exchange in New Israeli Shekels (ILS). The exchange rate in effect on the transaction date was 3.025 ILS to $1.000 . The reporting person undertakes to provide full information regarding the number of shares sold at each separate price upon request</footnote>
        <footnote id="F4">The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $212.37 to $213.36. These shares were sold on the Tel Aviv Stock Exchange in New Israeli Shekels (ILS). The exchange rate in effect on the transaction date was 3.025 ILS to $1.000 . The reporting person undertakes to provide full information regarding the number of shares sold at each separate price upon request</footnote>
        <footnote id="F5">The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $213.39 to $214.22. These shares were sold on the Tel Aviv Stock Exchange in New Israeli Shekels (ILS). The exchange rate in effect on the transaction date was 3.025 ILS to $1.000 . The reporting person undertakes to provide full information regarding the number of shares sold at each separate price upon request</footnote>
        <footnote id="F6">The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $217.36 to $218.31. These shares were sold on the Tel Aviv Stock Exchange in New Israeli Shekels (ILS). The exchange rate in effect on the transaction date was 3.025 ILS to $1.000 . The reporting person undertakes to provide full information regarding the number of shares sold at each separate price upon request</footnote>
        <footnote id="F7">The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $218.38 to $219.21. These shares were sold on the Tel Aviv Stock Exchange in New Israeli Shekels (ILS). The exchange rate in effect on the transaction date was 3.025 ILS to $1.000 . The reporting person undertakes to provide full information regarding the number of shares sold at each separate price upon request</footnote>
        <footnote id="F8">The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $219.39 to $220.33. These shares were sold on the Tel Aviv Stock Exchange in New Israeli Shekels (ILS). The exchange rate in effect on the transaction date was 3.025 ILS to $1.000 . The reporting person undertakes to provide full information regarding the number of shares sold at each separate price upon request</footnote>
        <footnote id="F9">The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $220.40 to $221.16. These shares were sold on the Tel Aviv Stock Exchange in New Israeli Shekels (ILS). The exchange rate in effect on the transaction date was 3.025 ILS to $1.000 . The reporting person undertakes to provide full information regarding the number of shares sold at each separate price upon request</footnote>
        <footnote id="F10">The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $222.28 to $222.62. These shares were sold on the Tel Aviv Stock Exchange in New Israeli Shekels (ILS). The exchange rate in effect on the transaction date was 3.025 ILS to $1.000 . The reporting person undertakes to provide full information regarding the number of shares sold at each separate price upon request</footnote>
        <footnote id="F11">These shares were sold on the Tel Aviv Stock Exchange in New Israeli Shekels (ILS). The exchange rate in effect on the transaction date was 3.025 ILS to $1.000 . The reporting person undertakes to provide full information regarding the number of shares sold at each separate price upon request</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Meirav Shemesh on behalf of Oppenheimer Israel, as Attorney-in-fact</signatureName>
        <signatureDate>2026-07-15</signatureDate>
    </ownerSignature>
</ownershipDocument>
