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                    <cik>0001106578</cik>
                    <ccc>XXXXXXXX</ccc>
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            <liveTestFlag>LIVE</liveTestFlag>



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            <issuerCik>0001082554</issuerCik>
            <issuerName>UNITED THERAPEUTICS CORPORATION</issuerName>
            <secFileNumber>000-26301</secFileNumber>
            <issuerAddress>
                <ns2:street1>1000 SPRING ST</ns2:street1>
                <ns2:city>SILVER SPRING</ns2:city>
                <ns2:stateOrCountry>MD</ns2:stateOrCountry>
                <ns2:zipCode>20910</ns2:zipCode>
            </issuerAddress>
            <issuerContactPhone>3016089292</issuerContactPhone>
            <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>MARTINE ROTHBLATT</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
            <relationshipsToIssuer>
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                <relationshipToIssuer>Officer</relationshipToIssuer>
            </relationshipsToIssuer>
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                <name>Morgan Stanley Smith Barney LLC Executive Financial Services</name>
                <address>
                    <ns2:street1>1 New York Plaza</ns2:street1>
                    <ns2:street2>8th Floor</ns2:street2>
                    <ns2:city>New York</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10004</ns2:zipCode>
                </address>
            </brokerOrMarketmakerDetails>
            <noOfUnitsSold>209000</noOfUnitsSold>
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            <noOfUnitsOutstanding>42446733</noOfUnitsOutstanding>
            <approxSaleDate>07/01/2026</approxSaleDate>
            <securitiesExchangeName>NASDAQ</securitiesExchangeName>
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            <natureOfAcquisitionTransaction>Exercise of Stock Options</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
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            <paymentDate>07/01/2026</paymentDate>
            <natureOfPayment>Cash</natureOfPayment>
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                <name>10b5-1 Sales for MARTINE ROTHBLATT</name>
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                    <ns2:stateOrCountry>MD</ns2:stateOrCountry>
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            <sellerDetails>
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                    <ns2:street1>1000 SPRING ST</ns2:street1>
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            </sellerDetails>
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        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for MARTINE ROTHBLATT</name>
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                    <ns2:street1>1000 SPRING ST</ns2:street1>
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                    <ns2:stateOrCountry>MD</ns2:stateOrCountry>
                    <ns2:zipCode>20910</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>04/07/2026</saleDate>
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        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for MARTINE ROTHBLATT</name>
                <address>
                    <ns2:street1>1000 SPRING ST</ns2:street1>
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                    <ns2:stateOrCountry>MD</ns2:stateOrCountry>
                    <ns2:zipCode>20910</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>04/06/2026</saleDate>
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            <grossProceeds>5304904.50</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for MARTINE ROTHBLATT</name>
                <address>
                    <ns2:street1>1000 SPRING ST</ns2:street1>
                    <ns2:city>SILVER SPRING</ns2:city>
                    <ns2:stateOrCountry>MD</ns2:stateOrCountry>
                    <ns2:zipCode>20910</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>04/02/2026</saleDate>
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            <grossProceeds>5333053.00</grossProceeds>
        </securitiesSoldInPast3Months>
        <remarks>Shares sold by Martine Rothblatt and/or the Martine Rothblatt Property Management Trust, which is beneficially owned by Martine Rothblatt, who is an officer of the issuer.</remarks>
        <noticeSignature>
            <noticeDate>07/01/2026</noticeDate>
            <planAdoptionDates>
                <planAdoptionDate>11/21/2025</planAdoptionDate>
            </planAdoptionDates>
            <signature>/s/ Martine Rothblatt</signature>
        </noticeSignature>
    </formData>
</edgarSubmission>
