<SEC-DOCUMENT>0000905718-19-000789.txt : 20190926
<SEC-HEADER>0000905718-19-000789.hdr.sgml : 20190926
<ACCEPTANCE-DATETIME>20190926161623
ACCESSION NUMBER:		0000905718-19-000789
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20190924
FILED AS OF DATE:		20190926
DATE AS OF CHANGE:		20190926

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			TYNDALL CAPITAL PARTNERS L P
		CENTRAL INDEX KEY:			0001219314
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-36020
		FILM NUMBER:		191118064

	BUSINESS ADDRESS:	
		STREET 1:		150 EAST 58TH STREET
		STREET 2:		14TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10155
		BUSINESS PHONE:		212-446-2466

	MAIL ADDRESS:	
		STREET 1:		150 EAST 58TH STREET
		STREET 2:		14TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10155

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Onconova Therapeutics, Inc.
		CENTRAL INDEX KEY:			0001130598
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		375 PHEASANT RUN
		CITY:			NEWTOWN
		STATE:			PA
		ZIP:			18940
		BUSINESS PHONE:		267-759-3681

	MAIL ADDRESS:	
		STREET 1:		375 PHEASANT RUN
		CITY:			NEWTOWN
		STATE:			PA
		ZIP:			18940

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ONCONOVA THERAPEUTICS, INC.
		DATE OF NAME CHANGE:	20090526

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ONCONOVA THERAPEUTICS INC
		DATE OF NAME CHANGE:	20001226
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>onconova_fm4sept242019.xml
<DESCRIPTION>OWNERSHIP DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2019-09-24</periodOfReport>

    <notSubjectToSection16>1</notSubjectToSection16>

    <issuer>
        <issuerCik>0001130598</issuerCik>
        <issuerName>Onconova Therapeutics, Inc.</issuerName>
        <issuerTradingSymbol>ONTX</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001219314</rptOwnerCik>
            <rptOwnerName>TYNDALL CAPITAL PARTNERS L P</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>150 EAST 58TH STREET</rptOwnerStreet1>
            <rptOwnerStreet2>14TH FLOOR</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10155</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2019-09-24</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>16700</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>1.1900</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>616389</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Note</value>
                    <footnoteId id="F1"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Tyndall Capital Partners, L.P. (&quot;Tyndall Capital&quot;) is the general partner of Tyndall Partners, L.P. (&quot;Tyndall&quot;), and possesses the sole power to vote and the sole power to direct the disposition of all securities held by Tyndall. Tyndall Capital's interest in the securities reported herein is limited to the extent of its pecuniary interest in such securities, if any.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Jeffrey S. Halis, Manager of Jeffrey Management, LLC, General Partner of Tyndall Capital Partners, L.P.</signatureName>
        <signatureDate>2019-09-26</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
