<SEC-DOCUMENT>0000899243-19-024086.txt : 20190923
<SEC-HEADER>0000899243-19-024086.hdr.sgml : 20190923
<ACCEPTANCE-DATETIME>20190923215021
ACCESSION NUMBER:		0000899243-19-024086
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20190919
FILED AS OF DATE:		20190923
DATE AS OF CHANGE:		20190923

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			TULLIS DICKERSON CAPITAL FOCUS III, L.P.
		CENTRAL INDEX KEY:			0001144359

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39049
		FILM NUMBER:		191109091

	BUSINESS ADDRESS:	
		STREET 1:		ONE GREENWICH PLAZA
		CITY:			GREENWICH
		STATE:			CT
		ZIP:			06830
		BUSINESS PHONE:		2036298700

	MAIL ADDRESS:	
		STREET 1:		ONE GREENWICH PLAZA
		CITY:			GREENWICH
		STATE:			CT
		ZIP:			06830

	FORMER NAME:	
		FORMER CONFORMED NAME:	TULLIS DICKERSON CAPITAL FOCUS III LP
		DATE OF NAME CHANGE:	20010706

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Tullis Growth Fund, L.P.
		CENTRAL INDEX KEY:			0001606950
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39049
		FILM NUMBER:		191109092

	BUSINESS ADDRESS:	
		STREET 1:		11760 U.S. HIGHWAY 1, SUITE 502W
		CITY:			PALM BEACH GARDENS
		STATE:			FL
		ZIP:			33408
		BUSINESS PHONE:		(203) 629-8700

	MAIL ADDRESS:	
		STREET 1:		11760 U.S. HIGHWAY 1, SUITE 502W
		CITY:			PALM BEACH GARDENS
		STATE:			FL
		ZIP:			33408

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			TULLIS GROWTH FUND II, L.P.
		CENTRAL INDEX KEY:			0001746842
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39049
		FILM NUMBER:		191109093

	BUSINESS ADDRESS:	
		STREET 1:		11770 US HWY 1
		STREET 2:		STE 503
		CITY:			PALM BEACH GARDENS
		STATE:			FL
		ZIP:			33408
		BUSINESS PHONE:		561-200-3300

	MAIL ADDRESS:	
		STREET 1:		11770 US HWY 1
		STREET 2:		STE 503
		CITY:			PALM BEACH GARDENS
		STATE:			FL
		ZIP:			33408

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			TULLIS DICKERSON PARTNERS III, L.L.C.
		CENTRAL INDEX KEY:			0001144364

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39049
		FILM NUMBER:		191109094

	BUSINESS ADDRESS:	
		STREET 1:		ONE GREENWICK PLAZA
		CITY:			GREENWICK
		STATE:			CT
		ZIP:			06830
		BUSINESS PHONE:		2036298700

	MAIL ADDRESS:	
		STREET 1:		ONE GREENWICK PLAZA
		CITY:			GREENWICK
		STATE:			CT
		ZIP:			06830

	FORMER NAME:	
		FORMER CONFORMED NAME:	TULLIS DICKERSON PARTNERS III LLC
		DATE OF NAME CHANGE:	20010706

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			EXAGEN INC.
		CENTRAL INDEX KEY:			0001274737
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-MEDICAL LABORATORIES [8071]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1261 LIBERTY WAY
		CITY:			VISTA
		STATE:			CA
		ZIP:			92081
		BUSINESS PHONE:		(760) 560-1501

	MAIL ADDRESS:	
		STREET 1:		1261 LIBERTY WAY
		CITY:			VISTA
		STATE:			CA
		ZIP:			92081

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	EXAGEN DIAGNOSTICS INC
		DATE OF NAME CHANGE:	20031230
</SEC-HEADER>
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<TYPE>4
<SEQUENCE>1
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            <rptOwnerStateDescription></rptOwnerStateDescription>
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        </reportingOwnerId>
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            <rptOwnerStreet2></rptOwnerStreet2>
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            <rptOwnerStateDescription></rptOwnerStateDescription>
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    <reportingOwner>
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            <rptOwnerStreet2></rptOwnerStreet2>
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            <rptOwnerState>FL</rptOwnerState>
            <rptOwnerZipCode>33408</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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        </reportingOwnerId>
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            <rptOwnerStreet1>11770 US HIGHWAY ONE, SUITE 503</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>PALM BEACH GARDENS</rptOwnerCity>
            <rptOwnerState>FL</rptOwnerState>
            <rptOwnerZipCode>33408</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
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            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2019-09-19</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>X</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>11498</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>14.3235</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>11597</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F1"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2019-09-19</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>8865</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>18.58</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2732</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F1"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2019-09-23</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>C</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1786853</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1789585</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F1"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Warrants</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>14.3235</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2019-09-19</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>X</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>11498</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>14.3235</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F3"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F3"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                    <footnoteId id="F4"/>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>11498</value>
                </underlyingSecurityShares>
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            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
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            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnotes</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F5"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Series A-3 Redeemable Convertible Preferred Stock</value>
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            <conversionOrExercisePrice>
                <footnoteId id="F6"/>
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            <transactionDate>
                <value>2019-09-23</value>
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            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
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                <transactionCode>C</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>468321</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F6"/>
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                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F6"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F6"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>2550</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnotes</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Series C Redeemable Convertible Preferred Stock</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F7"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2019-09-23</value>
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            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
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                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionTimeliness>
                <value></value>
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            <transactionAmounts>
                <transactionShares>
                    <value>5446902</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F7"/>
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                <transactionAcquiredDisposedCode>
                    <value>D</value>
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            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F7"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F7"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>95069</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnotes</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Series E Redeemable Convertible Preferred Stock</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F8"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2019-09-23</value>
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            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
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                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionTimeliness>
                <value></value>
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            <transactionAmounts>
                <transactionShares>
                    <value>53251030</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F8"/>
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                <transactionAcquiredDisposedCode>
                    <value>D</value>
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            <exerciseDate>
                <footnoteId id="F8"/>
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            <expirationDate>
                <footnoteId id="F8"/>
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            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
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                <underlyingSecurityShares>
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                    <value>0</value>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnotes</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F9"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Series F Redeemable Convertible Preferred Stock</value>
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            <conversionOrExercisePrice>
                <footnoteId id="F10"/>
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            <transactionDate>
                <value>2019-09-23</value>
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            <transactionAmounts>
                <transactionShares>
                    <value>81166266</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F10"/>
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                <transactionAcquiredDisposedCode>
                    <value>D</value>
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            <exerciseDate>
                <footnoteId id="F10"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F10"/>
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            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>441998</value>
                </underlyingSecurityShares>
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            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnotes</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F11"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Series H Redeemable Convertible Preferred Stock</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F12"/>
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            <transactionDate>
                <value>2019-09-23</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>C</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
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            <transactionAmounts>
                <transactionShares>
                    <value>58359932</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F12"/>
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                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F12"/>
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            <expirationDate>
                <footnoteId id="F12"/>
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            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>317804</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
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            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnotes</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F13"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The shares reported on this form are held of record by Tullis-Dickerson Capital Focus III, L.P. (&quot;Tullis&quot;), Tullis Growth Fund, L.P. (&quot;Tullis Growth&quot;) and Tullis Growth Fund II, L.P. (&quot;Tullis Growth II&quot;). Tullis-Dickerson Partners III, LLC (&quot;Tullis Partners&quot;) is the general partner of Tullis and may be deemed to beneficially own the securities held by Tullis. Tullis Growth Partners, LLC and Tullis Growth Partners II, LLC are the general partners of Tullis Growth and Tullis Growth II, respectively, and may be deemed to beneficially own the securities held by Tullis Growth and Tullis Growth II. James L.L. Tullis is a Principal of each of the foregoing entities and may be deemed to possess voting and investment control over, and may be deemed to have an indirect beneficial ownership with respect to, the shares held by Tullis, Tullis Growth and Tullis Growth II.</footnote>
        <footnote id="F2">Represents securities held of record by Tullis.</footnote>
        <footnote id="F3">The warrants are currently exercisable and will terminate upon closing of the Issuer's initial public offering.</footnote>
        <footnote id="F4">Represents warrants that previously entitled the holders to purchase Series E Redeemable Convertible Preferred Stock, which, pursuant to their terms, were settled in shares of the Issuer's Common Stock.</footnote>
        <footnote id="F5">Includes warrants held by Tullis and Tullis Growth, respectively, to purchase 43 shares of the Issuer's Common Stock and warrants to purchase 11,455 shares of the Issuer's Common Stock.</footnote>
        <footnote id="F6">The Series A-3 Redeemable Convertible Preferred Stock (the &quot;Series A-3&quot;) is convertible into the Issuer's Common Stock on a 183.635-for-one basis at the holder's election and has no expiration date. The Series A-3 automatically converted into Common Stock upon the closing of the Issuer's initial public offering.</footnote>
        <footnote id="F7">The Series C Redeemable Convertible Preferred Stock (the &quot;Series C&quot;) is convertible into the Issuer's Common Stock on a 57.294-for-one basis at the holder's election and has no expiration date. The Series C automatically converted into Common Stock upon the closing of the Issuer's initial public offering.</footnote>
        <footnote id="F8">The Series E Redeemable Convertible Preferred Stock (the &quot;Series E&quot;) is convertible into the Issuer's Common Stock on a 57.294-for-one basis at the holder's election and has no expiration date. The Series E automatically converted into Common Stock upon the closing of the Issuer's initial public offering.</footnote>
        <footnote id="F9">Includes 656,282 and 273,150 shares of common stock underlying the Series E shares held by Tullis and Tullis Growth, respectively.</footnote>
        <footnote id="F10">The Series F Redeemable Convertible Preferred Stock (&quot;Series F&quot;) is convertible into the Issuer's Common Stock on a 183.635-for-one basis at the holder's election and has no expiration date. The Series F automatically converted into Common Stock upon the closing of the Issuer's initial public offering.</footnote>
        <footnote id="F11">Includes 242,226 and 199,771 shares of common stock underlying the Series F shares held by Tullis and Tullis Growth, respectively.</footnote>
        <footnote id="F12">The Series H Redeemable Convertible Preferred Stock (&quot;Series H&quot;) is convertible into the Issuer's Common Stock on a 183.635-for-one basis at the holder's election and has no expiration date. The Series H automatically converted into Common Stock upon the closing of the Issuer's initial public offering.</footnote>
        <footnote id="F13">Includes 106,897 shares, 105,453 shares and 105,453 shares of common stock underlying the Series H shares held by Tullis, Tullis Growth and Tullis Growth II, respectively.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Tullis Growth Fund II, L.P., By: Tullis-Growth Partners II, L.L.C., its general partner, /s/ James L. L. Tullis, Name: James L.L. Tullis, Title: Manager</signatureName>
        <signatureDate>2019-09-23</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Tullis Growth Fund, L.P., By: Tullis-Growth Partners, L.L.C., its general partner, /s/ James L. L. Tullis, Name: James L.L. Tullis, Title: Manager</signatureName>
        <signatureDate>2019-09-23</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Tullis-Dickerson Capital Focus III, L.P., By: Tullis-Dickerson Partners, L.L.C., its general partner, /s/ James L. L. Tullis, Name: James L.L. Tullis, Title: Manager</signatureName>
        <signatureDate>2019-09-23</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Tullis-Dickerson Partners III, L.L.C., /s/ James L. L. Tullis, Name: James L.L. Tullis, Title: Manager</signatureName>
        <signatureDate>2019-09-23</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
