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

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2019-08-28</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001411688</issuerCik>
        <issuerName>Container Store Group, Inc.</issuerName>
        <issuerTradingSymbol>TCS</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001449644</rptOwnerCik>
            <rptOwnerName>Green Equity Investors V, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>11111 SANTA MONICA BOULEVARD</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 2000</rptOwnerStreet2>
            <rptOwnerCity>LOS ANGELES</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>90025</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001449643</rptOwnerCik>
            <rptOwnerName>Green Equity Investors Side V, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>11111 SANTA MONICA BOULEVARD</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 2000</rptOwnerStreet2>
            <rptOwnerCity>LOS ANGELES</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>90025</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001590842</rptOwnerCik>
            <rptOwnerName>TCS Co-Invest, LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>11111 SANTA MONICA BLVD.</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 2000</rptOwnerStreet2>
            <rptOwnerCity>LOS ANGELES</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>90025</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001449640</rptOwnerCik>
            <rptOwnerName>GEI Capital V, LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>11111 SANTA MONICA BOULEVARD</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 2000</rptOwnerStreet2>
            <rptOwnerCity>LOS ANGELES</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>90025</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001449645</rptOwnerCik>
            <rptOwnerName>Green V Holdings, LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>11111 SANTA MONICA BOULEVARD</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 2000</rptOwnerStreet2>
            <rptOwnerCity>LOS ANGELES</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>90025</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001175523</rptOwnerCik>
            <rptOwnerName>Leonard Green &amp; Partners, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>11111 SANTA MONICA BLVD</rptOwnerStreet1>
            <rptOwnerStreet2>STE 2000</rptOwnerStreet2>
            <rptOwnerCity>LOS ANGELES</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>90025</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001175525</rptOwnerCik>
            <rptOwnerName>LGP MANAGEMENT INC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>11111 SANTA MONICA BLVD</rptOwnerStreet1>
            <rptOwnerStreet2>STE 2000</rptOwnerStreet2>
            <rptOwnerCity>LOS ANGELES,</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>90025</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001632725</rptOwnerCik>
            <rptOwnerName>PERIDOT COINVEST MANAGER LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>11111 SANTA MONICA BOULEVARD</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>LOS ANGELES,</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>90025</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001642447</rptOwnerCik>
            <rptOwnerName>LGP Associates V LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>11111 SANTA MONICA BOULEVARD</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 2000</rptOwnerStreet2>
            <rptOwnerCity>LOS ANGELES</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>90025</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock, par value $0.01</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>20952262</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                    <footnoteId id="F4"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock, par value $0.01</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>6285164</value>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                    <footnoteId id="F5"/>
                    <footnoteId id="F6"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock, par value $0.01</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>269118</value>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                    <footnoteId id="F7"/>
                    <footnoteId id="F8"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, par value $0.01</value>
            </securityTitle>
            <transactionDate>
                <value>2019-08-28</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>64797</value>
                    <footnoteId id="F9"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                    <footnoteId id="F10"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>92271</value>
                    <footnoteId id="F11"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote.</value>
                    <footnoteId id="F11"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Stock Option (Right to Buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>18.00</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F12"/>
            </exerciseDate>
            <expirationDate>
                <value>2023-10-31</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>40808</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>40808</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote.</value>
                    <footnoteId id="F13"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Stock Option (Right to Buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>21.53</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F12"/>
            </exerciseDate>
            <expirationDate>
                <value>2024-10-27</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>30396</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>30396</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote.</value>
                    <footnoteId id="F14"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Stock Option (Right to Buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>17.28</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F12"/>
            </exerciseDate>
            <expirationDate>
                <value>2025-08-03</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>35463</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>35463</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote.</value>
                    <footnoteId id="F15"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Stock Option (Right to Buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>5.35</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F12"/>
            </exerciseDate>
            <expirationDate>
                <value>2026-08-01</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>92025</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>92025</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote.</value>
                    <footnoteId id="F16"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Stock Option (Right to Buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>4.10</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F17"/>
            </exerciseDate>
            <expirationDate>
                <value>2027-09-12</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>128757</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>128757</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote.</value>
                    <footnoteId id="F18"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Represents shares of the Issuer's common stock, par value $0.01 per share (the &quot;Common Stock&quot;) held directly by Green Equity Investors V, L.P. (&quot;GEI V&quot;).</footnote>
        <footnote id="F2">GEI V is the direct owner of 20,952,262 shares of Common Stock of the Issuer.  Green Equity Investors Side V, L.P. (&quot;GEI Side V&quot;) is the direct owner of 6,285,164 shares of Common Stock of the Issuer. TCS Co-Invest, LLC (&quot;TCS&quot;) is the direct owner of 269,118 shares of Common Stock of the Issuer (together with GEI V's and GEI Side V's Common Stock, the &quot;Shares&quot;). GEI Capital V, LLC (&quot;GEIC&quot;) is the general partner of GEI V and GEI Side V. Green V Holdings, LLC (&quot;Holdings&quot;) is a limited partner of GEI V and GEI Side V. Leonard Green &amp; Partners, L.P. (&quot;LGP&quot;) is the manager of GEI V, GEI Side V and Peridot Coinvest Manager LLC (&quot;Peridot&quot;), and an affiliate of GEIC and Holdings. LGP Management, Inc. (&quot;LGPM&quot;) is the general partner of LGP. Peridot is the manager of LGP Associates V LLC (&quot;Associates V&quot;). Associates V is the manager of TCS.</footnote>
        <footnote id="F3">GEI Side V, as an affiliated entity of GEI V, LGP, as the manager of GEI V, GEI Side V and Peridot, LGPM, as the general partner of LGP, GEIC, as the general partner of GEI V and GEI Side V, Holdings, as a limited partner of GEI V and GEI Side V, Peridot, as the manager of Associates V, and Associates V, as the manager of TCS, directly (whether through ownership or position) or indirectly through one or more intermediaries, may be deemed for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, to be the indirect beneficial owners of the Shares (in the case of GEI Side V, the GEI V Shares and TCS's Shares, in the case of GEI V, the GEI Side V Shares and TCS's Shares, and in the case of TCS, the GEI V Shares and the GEI Side V Shares) owned by GEI V, GEI Side V, or TCS.</footnote>
        <footnote id="F4">Each of GEI Side V, TCS, GEIC, Holdings, LGP, LGPM, Peridot, and Associates V disclaims beneficial ownership of the Shares reported herein, except to the extent of its pecuniary interest therein, and this report shall not be deemed an admission that the reporting persons are the beneficial owners of such securities for purposes of Section 16 or for any other purposes.</footnote>
        <footnote id="F5">Represents shares of Common Stock held directly by GEI Side V.</footnote>
        <footnote id="F6">Each of GEI V, TCS, LGP, LGPM, GEIC, Holdings, Peridot and Associates V disclaims beneficial ownership of the Shares reported herein, except to the extent of its pecuniary interest therein, and this report shall not be deemed an admission that the reporting persons are the beneficial owners of such securities for purposes of Section 16 or for any other purposes.</footnote>
        <footnote id="F7">Represents shares of Common Stock held directly by TCS.</footnote>
        <footnote id="F8">Each of GEI V, GEI Side V, LGP, LGPM, GEIC, Holdings, Peridot and Associates V disclaims beneficial ownership of the Shares reported herein, except to the extent of its pecuniary interest therein, and this report shall not be deemed an admission that the reporting persons are the beneficial owners of such securities for purposes of Section 16 or for any other purposes.</footnote>
        <footnote id="F9">Represents shares of restricted Common Stock of the Issuer awarded to Jonathan D. Sokoloff, Timothy J. Flynn, and J. Kristofer Galashan pursuant to the Issuer's Amended and Restated 2013 Incentive Award Plan on August 28, 2019.</footnote>
        <footnote id="F10">Granted as compensation for services.</footnote>
        <footnote id="F11">Represents shares of restricted Common Stock owned by Messrs. Sokoloff, Flynn, and Galashan, each of whom hold 30,757 shares of restricted Common Stock.</footnote>
        <footnote id="F12">The options reported on this row are fully vested.</footnote>
        <footnote id="F13">The options reported on this row were granted to Jonathan D. Sokoloff, Timothy J. Flynn, and J. Kristofer Galashan in respect of their service on the Issuer's board of directors for the benefit of LGP, with Mr. Sokoloff and Mr. Flynn each holding 13,603 of such options and Mr. Galashan holding 13,602 of such options. Each of Messrs. Sokoloff, Flynn, and Galashan disclaims beneficial ownership of such options, except to the extent of his pecuniary interest therein. LGP directly (whether through ownership or position) or indirectly through one or more intermediaries, may be deemed for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, to be the indirect beneficial owner of such options.</footnote>
        <footnote id="F14">The options reported on this row were granted to Jonathan D. Sokoloff, Timothy J. Flynn, and J. Kristofer Galashan in respect of their service on the Issuer's board of directors for the benefit of LGP, with Messrs. Sokoloff, Flynn, and Galashan each holding 10,132 of such options. Each of Messrs. Sokoloff, Flynn, and Galashan disclaims beneficial ownership of such options, except to the extent of his pecuniary interest therein. LGP directly (whether through ownership or position) or indirectly through one or more intermediaries, may be deemed for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, to be the indirect beneficial owner of such options.</footnote>
        <footnote id="F15">The options reported on this row were granted to Jonathan D. Sokoloff, Timothy J. Flynn, and J. Kristofer Galashan in respect of their service on the Issuer's board of directors for the benefit of LGP, with Messrs. Sokoloff, Flynn, and Galashan each holding 11,821 of such options. Each of Messrs. Sokoloff, Flynn, and Galashan disclaims beneficial ownership of such options, except to the extent of his pecuniary interest therein. LGP directly (whether through ownership or position) or indirectly through one or more intermediaries, may be deemed for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, to be the indirect beneficial owner of such options.</footnote>
        <footnote id="F16">The options reported on this row were granted to Jonathan D. Sokoloff, Timothy J. Flynn, and J. Kristofer Galashan in respect of their service on the Issuer's board of directors for the benefit of LGP, with Messrs. Sokoloff, Flynn, and Galashan each holding 30,675 of such options. Each of Messrs. Sokoloff, Flynn, and Galashan disclaims beneficial ownership of such options, except to the extent of his pecuniary interest therein. LGP directly (whether through ownership or position) or indirectly through one or more intermediaries, may be deemed for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, to be the indirect beneficial owner of such options.</footnote>
        <footnote id="F17">Subject to Jonathan D. Sokoloff, Timothy J. Flynn, and J. Kristofer Galashan's continued service through each such vesting date, the options reported on this row, granted on September 12, 2017 (the &quot;Second Grant Date&quot;), shall vest and become exercisable in three equal installments as follows: (i) the first installment vested on September 11, 2018; (ii) the second installment vested on August 27, 2019; and (iii) the third installment shall vest on the earlier of (x) the day immediately preceding the third Annual Meeting following the Second Grant Date and (y) September 12, 2020.</footnote>
        <footnote id="F18">The options reported on this row were granted to Jonathan D. Sokoloff, Timothy J. Flynn, and J. Kristofer Galashan in respect of their service on the Issuer's board of directors for the benefit of LGP, with Messrs. Sokoloff, Flynn, and Galashan each holding 42,919 of such options. Each of Messrs. Sokoloff, Flynn, and Galashan disclaims beneficial ownership of such options, except to the extent of his pecuniary interest therein. LGP directly (whether through ownership or position) or indirectly through one or more intermediaries, may be deemed for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, to be the indirect beneficial owner of such options.</footnote>
    </footnotes>

    <remarks>GEI V may be deemed to be a director for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, by reason of its right to nominate three persons to serve on the board of directors of the Issuer in accordance with the terms and conditions of a securities purchase agreement dated as of August 15, 2007, as amended, by and among the Issuer, GEI V, GEI Side V, and TCS.</remarks>

    <ownerSignature>
        <signatureName>Andrew C. Goldberg, attorney-in-fact</signatureName>
        <signatureDate>2019-08-30</signatureDate>
    </ownerSignature>
</ownershipDocument>
