# EDGAR Filing Document

**Accession Number:** 0001082554
**File Stem:** 0001104659-23-009491
**Filing Date:** 2023-2
**Character Count:** 12599
**Document Hash:** 4cf2e50de0af6e93200df7b13424f7b2
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-23-009491.hdr.sgml**: 20230202

**ACCESSION NUMBER**: 0001104659-23-009491

**CONFORMED SUBMISSION TYPE**: SC 13G/A

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20230202

**DATE AS OF CHANGE**: 20230202

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** UNITED THERAPEUTICS Corp
- **CENTRAL INDEX KEY:** 0001082554
- **STANDARD INDUSTRIAL CLASSIFICATION:** PHARMACEUTICAL PREPARATIONS [2834]
- **IRS NUMBER:** 521984749
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SC 13G/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-57843
- **FILM NUMBER:** 23578682

**BUSINESS ADDRESS:**
- **STREET 1:** 1040 SPRING ST
- **CITY:** SILVER SPRING
- **STATE:** MD
- **ZIP:** 20910
- **BUSINESS PHONE:** 3016089292

**MAIL ADDRESS:**
- **STREET 1:** 1040 SPRING ST
- **CITY:** SILVER SPRING
- **STATE:** MD
- **ZIP:** 20910

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** UNITED THERAPEUTICS CORP
- **DATE OF NAME CHANGE:** 19990324
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** ROTHBLATT MARTINE A
- **CENTRAL INDEX KEY:** 0001106578

**FILING VALUES:**
- **FORM TYPE:** SC 13G/A

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, DC 20549**

**SCHEDULE 13G**

**(Rule 13d-102)**

Information to be Included in Statements Filed Pursuant to § 240.13d-1(b), (c)<br> and (d) and Amendments Thereto Filed Pursuant to § 240.13d-2

**Under the Securities Exchange Act of 1934**

**(Amendment No. 4)**

**United Therapeutics Corporation**

(Name of Issuer)

**Common Stock, par value $.01 per share**

(Title of Class of Securities)

**91307C102**

(CUSIP Number)

**December 31, 2022**

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

◻ Rule 13d-1(b) <br> ◻ Rule 13d-1(c) <br> ⌧ Rule 13d-1(d)

\*The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act, but shall be subject to all other provisions of the Act (however, see the Notes).

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| | | | | |
|:---|:---|:---|:---|:---|
| CUSIP No. 91307C102 | CUSIP No. 91307C102 | CUSIP No. 91307C102 | CUSIP No. 91307C102 | CUSIP No. 91307C102 |
| 1. | Name of Reporting Persons<br> I.R.S. Identification Nos. of Above Person (entities only)<br> Martine A. Rothblatt | Name of Reporting Persons<br> I.R.S. Identification Nos. of Above Person (entities only)<br> Martine A. Rothblatt | Name of Reporting Persons<br> I.R.S. Identification Nos. of Above Person (entities only)<br> Martine A. Rothblatt | Name of Reporting Persons<br> I.R.S. Identification Nos. of Above Person (entities only)<br> Martine A. Rothblatt |
| 2. | Check the Appropriate Box if a Member of a Group (*See* Instructions) | Check the Appropriate Box if a Member of a Group (*See* Instructions) | Check the Appropriate Box if a Member of a Group (*See* Instructions) | Check the Appropriate Box if a Member of a Group (*See* Instructions) |
|  | (a) | (a) | ◻ | ◻ |
|  | (b) | (b) | ◻ | ◻ |
| 3. | SEC Use Only | SEC Use Only | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br> United States of America | Citizenship or Place of Organization<br> United States of America | Citizenship or Place of Organization<br> United States of America | Citizenship or Place of Organization<br> United States of America |
| Number of<br> Shares<br> Beneficially<br> Owned by<br> Each<br> Reporting<br> Person With | Number of<br> Shares<br> Beneficially<br> Owned by<br> Each<br> Reporting<br> Person With | 5. | 5. | Sole Voting Power <br> 3,919,603 |
| Number of<br> Shares<br> Beneficially<br> Owned by<br> Each<br> Reporting<br> Person With | Number of<br> Shares<br> Beneficially<br> Owned by<br> Each<br> Reporting<br> Person With |  |  |  |
| Number of<br> Shares<br> Beneficially<br> Owned by<br> Each<br> Reporting<br> Person With | Number of<br> Shares<br> Beneficially<br> Owned by<br> Each<br> Reporting<br> Person With | 6. | 6. | Shared Voting Power<br>0 |
| Number of<br> Shares<br> Beneficially<br> Owned by<br> Each<br> Reporting<br> Person With | Number of<br> Shares<br> Beneficially<br> Owned by<br> Each<br> Reporting<br> Person With |  |  |  |
| Number of<br> Shares<br> Beneficially<br> Owned by<br> Each<br> Reporting<br> Person With | Number of<br> Shares<br> Beneficially<br> Owned by<br> Each<br> Reporting<br> Person With | 7. | 7. | Sole Dispositive Power <br> 3,919,603 |
| Number of<br> Shares<br> Beneficially<br> Owned by<br> Each<br> Reporting<br> Person With | Number of<br> Shares<br> Beneficially<br> Owned by<br> Each<br> Reporting<br> Person With |  |  |  |
| Number of<br> Shares<br> Beneficially<br> Owned by<br> Each<br> Reporting<br> Person With | Number of<br> Shares<br> Beneficially<br> Owned by<br> Each<br> Reporting<br> Person With | 8. | 8. | Shared Dispositive Power<br> 0 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br> 3,919,603 | Aggregate Amount Beneficially Owned by Each Reporting Person<br> 3,919,603 | Aggregate Amount Beneficially Owned by Each Reporting Person<br> 3,919,603 | Aggregate Amount Beneficially Owned by Each Reporting Person<br> 3,919,603 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (*See* Instructions) ◻ | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (*See* Instructions) ◻ | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (*See* Instructions) ◻ | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (*See* Instructions) ◻ |
| 11. | Percent of Class Represented by Amount in Row (9)<br> 8.0% | Percent of Class Represented by Amount in Row (9)<br> 8.0% | Percent of Class Represented by Amount in Row (9)<br> 8.0% | Percent of Class Represented by Amount in Row (9)<br> 8.0% |
| 12. | Type of Reporting Person (*See* Instructions)<br> IN | Type of Reporting Person (*See* Instructions)<br> IN | Type of Reporting Person (*See* Instructions)<br> IN | Type of Reporting Person (*See* Instructions)<br> IN |

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| | | |
|:---|:---|:---|
| **Item 1.** | **Item 1.** | **Item 1.** |
| (a) | **Name of Issuer:**<br> United Therapeutics Corporation | **Name of Issuer:**<br> United Therapeutics Corporation |
| (b) | **Address of Issuer's Principal Executive Offices:**<br> 1040 Spring Street, Silver Spring, MD 20910 | **Address of Issuer's Principal Executive Offices:**<br> 1040 Spring Street, Silver Spring, MD 20910 |
| **Item 2.** | **Item 2.** | **Item 2.** |
| (a) | **Name of Person Filing:**<br> Martine A. Rothblatt  | **Name of Person Filing:**<br> Martine A. Rothblatt  |
| (b) | **Address of Principal Business Office or, if none, Residence:**<br> 1040 Spring Street<br> Silver Spring, MD 20910 | **Address of Principal Business Office or, if none, Residence:**<br> 1040 Spring Street<br> Silver Spring, MD 20910 |
| (c) | **Citizenship:**<br> United States of America | **Citizenship:**<br> United States of America |
| (d) | **Title of Class of Securities:**<br> Common Stock | **Title of Class of Securities:**<br> Common Stock |
| (e) | **CUSIP Number:**<br> 91307C102 | **CUSIP Number:**<br> 91307C102 |
| **Item 3.** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **If this statement is filed pursuant to §§ 240.13d-1(b), or 240.13d-2(b) or (c), check whether the person filing is a:** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **If this statement is filed pursuant to §§ 240.13d-1(b), or 240.13d-2(b) or (c), check whether the person filing is a:** |
| (a) | ◻ | Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o); |
| (b) | ◻ | Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c); |
| (c) | ◻ | Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c); |
| (d) | ◻ | Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8); |
| (e) | ◻ | An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E); |
| (f) | ◻ | An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F); |
| (g) | ◻ | A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G); |
| (h) | ◻ | A savings association as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813); |
| (i) | ◻ | A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3); |
| (j) | ◻ | A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). |
| (k) | ◻ | Group, in accordance with § 240.13d-1(b)(1)(ii)(K). |

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| | |
|:---|:---|
| **Item 4.** | **Ownership.** |
| (a) | Amount beneficially owned: 3,919,603 shares |
| (b) | Percent of class: 8.0% |
| (c) | Number of shares as to which the person has: |
| (i) | Sole power to vote or to direct the vote<br>3,919,603<br>|
| (ii) | Shared power to vote or to direct the vote<br>0 |
| (iii) | Sole power to dispose or to direct the disposition of<br>3,919,603 |
| (iv) | Shared power to dispose or to direct the disposition of<br>0 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The shares beneficially owned by Dr. Rothblatt include exercisable options to purchase 3,248,542 shares, 644,183 shares held indirectly by trust, 166 shares held by Dr. Rothblatt's spouse, 22,333 shares held by charitable organizations and 4,249 shares held in trusts for the benefit of children, over which Dr. Rothblatt has investment and voting power. | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The shares beneficially owned by Dr. Rothblatt include exercisable options to purchase 3,248,542 shares, 644,183 shares held indirectly by trust, 166 shares held by Dr. Rothblatt's spouse, 22,333 shares held by charitable organizations and 4,249 shares held in trusts for the benefit of children, over which Dr. Rothblatt has investment and voting power. |
| **Item 5.** | **Ownership of Five Percent or Less of a Class.** |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than 5 percent of the class of securities, check the following ◻ | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than 5 percent of the class of securities, check the following ◻ |
| **Item 6.** | **Ownership of More than Five Percent on Behalf of Another Person.** |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not applicable. | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not applicable. |
| **Item 7.** | **Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.** |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not applicable. | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not applicable. |
| **Item 8.** | **Identification and Classification of Members of the Group.** |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not applicable. | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not applicable. |
| **Item 9.** | **Notice of Dissolution of Group.** |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not applicable. | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not applicable. |
| **Item 10.** | **Certifications.** |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not applicable. | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not applicable. |

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**SIGNATURE**

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

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| | |
|:---|:---|
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Date: February 2, 2023 | /s/ Martine A. Rothblatt |

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Martine A. Rothblatt