United Therapeutics director plans $115K stock sale

A United Therapeutics director filed a Rule 144 notice to sell 228 common shares valued at about $115,338 on NASDAQ.

Available on EDGAR 09/14/2026 - 04:56 PM EDT Accepted by SEC EDGAR 09/14/2026 - 04:40 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

UNITED THERAPEUTICS CORPORATION (UTHR) is the issuer for a planned sale of its common stock reported by director Nilda Mesa under Rule 144. The notice covers 228 shares of common stock to be sold through Morgan Stanley Smith Barney LLC on NASDAQ on September 14, 2026, with an aggregate market value of $115,337.83.

Key Figures

Shares to be sold: 228 shares Aggregate market value of planned sale: $115,337.83 Shares from stock option exercise: 130 shares +2 more

5 metrics

Shares to be sold 228 shares Common stock planned sale reported by director Nilda Mesa under Rule 144

Aggregate market value of planned sale $115,337.83 Total value of 228 shares of UNITED THERAPEUTICS common stock

Shares from stock option exercise 130 shares Common stock acquired from issuer via stock option exercise on September 14, 2026

Shares from restricted stock 98 shares Common stock acquired from issuer as restricted stock on July 9, 2026

Planned sale date September 14, 2026 Date indicated for the sale of 228 common shares on NASDAQ

Key Terms

Rule 144, Stock Option Exercise, Restricted Stock, aggregate market value

4 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Stock Option Exercise financial

"Common | 09/14/2026 | Stock Option Exercise | Issuer"

A stock option exercise is the act of using a previously granted right to buy shares of a company's stock at a specific, predetermined price by paying that price and receiving the shares. It matters to investors because exercising changes who owns the shares (which can dilute existing ownership), can trigger taxable events and shift potential gains or losses, and affects voting power and the company’s outstanding share count—like turning a voucher into an actual product that becomes part of circulating supply.

Restricted Stock financial

"Common | 07/09/2026 | Restricted Stock | Issuer"

Shares granted to an individual that carry limits on transfer or sale until certain conditions are met, such as staying with the company for a set time or hitting performance targets. Think of them as a locked gift that gradually opens; for investors they matter because they affect how many shares may enter the market later, signal management incentives and potential dilution, and reveal confidence in future company performance.

aggregate market value financial

"Common | Morgan Stanley Smith Barney LLC Executive Financial Services ... | 115337.83"

Aggregate market value is the combined price you would pay to buy all outstanding shares of a company or all companies in a group at current market prices — essentially the sum of each stock’s market capitalization. It matters to investors because it shows the overall size and weight of an investment or sector (like the total cost to buy every piece of a puzzle), helps compare scale across companies or markets, and influences index composition and risk exposure.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does the Form 144 filing mean for UNITED THERAPEUTICS (UTHR)?

It reports that director Nilda Mesa intends to sell 228 shares of UNITED THERAPEUTICS common stock under Rule 144 on or about September 14, 2026. This is a disclosure of a proposed sale by an affiliate, not a transaction by the company itself.

How many UTHR shares are covered by Nilda Mesa’s Form 144?

The notice covers 228 shares of UNITED THERAPEUTICS common stock, with an indicated aggregate market value of $115,337.83. These shares are to be sold through Morgan Stanley Smith Barney LLC Executive Financial Services.

What is the planned sale date and market for the UTHR shares?

The filing lists a proposed sale date of September 14, 2026 for the 228 shares of UNITED THERAPEUTICS common stock, to be sold on the NASDAQ market through Morgan Stanley Smith Barney LLC.

How were the UTHR shares in this Form 144 acquired?

The Form 144 indicates two sources: 130 shares acquired via stock option exercise from the issuer on September 14, 2026, and 98 shares acquired as restricted stock from the issuer on July 9, 2026.

Who is the person selling UTHR shares in this Form 144?

The notice is filed for the account of Nilda Mesa, identified as a director of UNITED THERAPEUTICS CORPORATION. The form is signed “/s/ Nilda Mesa” and relates to her planned sale of 228 shares of common stock.

Does the Form 144 report any UTHR shares sold in the prior three months?

The section for Securities Sold During The Past 3 Months is present, and no specific prior sales are listed. The detailed figures in the form relate to the planned 228-share sale on September 14, 2026.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001756697
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	UNITED THERAPEUTICS CORPORATION
SEC File Number	000-26301
Address of Issuer	1000 SPRING STREET SILVER SPRING MARYLAND 20910
Phone	(301) 608-9292
Name of Person for Whose Account the Securities are To Be Sold	NILDA MESA
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Director

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	228	115337.83	42890692	09/14/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	09/14/2026	Stock Option Exercise	Issuer			130	09/14/2026	Cash
Common	07/09/2026	Restricted Stock	Issuer			98	07/09/2026	Not Applicable

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Nothing to Report

144: Remarks and Signature

Remarks
Date of Notice	09/14/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Nilda Mesa
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)