<SEC-DOCUMENT>0001437749-20-025412.txt : 20201215
<SEC-HEADER>0001437749-20-025412.hdr.sgml : 20201215
<ACCEPTANCE-DATETIME>20201215172740
ACCESSION NUMBER:		0001437749-20-025412
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20201215
FILED AS OF DATE:		20201215
DATE AS OF CHANGE:		20201215

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			OSSER LEONARD
		CENTRAL INDEX KEY:			0001188354

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-14053
		FILM NUMBER:		201390519

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MILESTONE SCIENTIFIC INC.
		CENTRAL INDEX KEY:			0000855683
		STANDARD INDUSTRIAL CLASSIFICATION:	ORTHOPEDIC, PROSTHETIC & SURGICAL APPLIANCES & SUPPLIES [3842]
		IRS NUMBER:				133545623
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		220 SOUTH ORANGE AVENUE
		CITY:			LIVINGSTON
		STATE:			NJ
		ZIP:			07039
		BUSINESS PHONE:		(973) 535-2717

	MAIL ADDRESS:	
		STREET 1:		220 SOUTH ORANGE AVENUE
		CITY:			LIVINGSTON
		STATE:			NJ
		ZIP:			07039

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MILESTONE SCIENTIFIC INC/NJ
		DATE OF NAME CHANGE:	19970409

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	U S OPPORTUNITY SEARCH INC
		DATE OF NAME CHANGE:	19920703
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>rdgdoc.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2020-12-15</periodOfReport>

    <issuer>
        <issuerCik>0000855683</issuerCik>
        <issuerName>MILESTONE SCIENTIFIC INC.</issuerName>
        <issuerTradingSymbol>MLSS</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001188354</rptOwnerCik>
            <rptOwnerName>OSSER LEONARD</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O MILESTONE SCIENTIFIC INC.</rptOwnerStreet1>
            <rptOwnerStreet2>425 EAGLE ROCK AVENUE</rptOwnerStreet2>
            <rptOwnerCity>ROSELAND</rptOwnerCity>
            <rptOwnerState>NJ</rptOwnerState>
            <rptOwnerZipCode>07068</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <officerTitle>Interim CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, Par Value $0.001</value>
            </securityTitle>
            <transactionDate>
                <value>2020-12-15</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>336970</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>1.14</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>4282323</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Option (Right to Buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>1.14</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2020-12-15</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>336970</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F2"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>336970</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">1,492,354 of these shares are issuable to the reporting person at the termination of employment.</footnote>
        <footnote id="F2">Options vested over three equal installments over 3 years. Expiring January 8, 2021.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Leonard Osser</signatureName>
        <signatureDate>2020-12-15</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
