RYTM holder plans sale of 5,079 shares

A holder of RYTM common stock filed a notice to sell up to 5,079 shares through Morgan Stanley Smith Barney LLC on or after 08/13/2026 on NASDAQ.

Rhea-AI Filing Summary

A holder of RYTM common stock filed a notice to sell up to 5,079 shares through Morgan Stanley Smith Barney LLC on or after 08/13/2026 on NASDAQ. The shares relate to an exercise of stock options from 2024 and restricted stock units dated 02/01/2025, with an aggregate market value of $597,290.40.

Key Figures

Shares planned for sale: 5,079 shares Aggregate market value: $597,290.40 Option-related shares: 2,024 shares +3 more

6 metrics

Shares planned for sale 5,079 shares Common stock to be sold through Morgan Stanley Smith Barney LLC

Aggregate market value $597,290.40 Market value of 5,079 common shares referenced in the notice

Option-related shares 2,024 shares Common stock tied to Exercise of Stock Options from 2024

RSU-related shares 3,055 shares Common stock tied to Restricted Stock Units dated 02/01/2025

Proposed sale date 08/13/2026 Date listed for sale of common stock on NASDAQ

RSU date 02/01/2025 Date associated with Restricted Stock Units underlying part of the sale

Key Terms

Exercise of Stock Options, Restricted Stock Units, aggregate market value

3 terms

Exercise of Stock Options financial

"Common | 08/13/2026 | Exercise of Stock Options | Issuer"

Restricted Stock Units financial

"Common | 02/01/2025 | Restricted Stock Units | Issuer"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

aggregate market value financial

"Common | Morgan Stanley Smith Barney LLC ... | 5079 | 597290.40"

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 share sale is disclosed for RYTM in this notice?

The notice discloses a planned sale of up to 5,079 shares of RYTM common stock. These shares are to be sold through Morgan Stanley Smith Barney LLC on NASDAQ, representing stock from option exercises and restricted stock units.

What is the total market value of RYTM shares planned for sale?

The planned sale covers RYTM common stock with an aggregate market value of $597,290.40. This value is based on the 5,079 shares referenced in the filing’s securities information section for the anticipated sale.

When are the RYTM shares expected to be sold?

The RYTM shares are expected to be sold on or after 08/13/2026. This date appears as the proposed sale date in the securities information, indicating when the broker may begin executing sales on NASDAQ.

How many RYTM shares come from stock options and RSUs?

The filing links 2,024 shares to an exercise of stock options and 3,055 shares to restricted stock units. Together these underlying awards correspond to the 5,079 shares referenced for potential sale.

Which broker will handle the planned RYTM share sale?

The planned RYTM share sale will be handled by Morgan Stanley Smith Barney LLC Executive Financial Services. The broker’s office is listed at 1 New York Plaza, 8th Floor, New York, NY 10004, and the sale venue is NASDAQ.

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

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Available on EDGAR 08/13/2026 - 04:41 PM Accepted by SEC EDGAR 08/13/2026 - 04:40 PM Learn about SEC filing dates

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	0001909855
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	RHYTHM PHARMACEUTICALS INC
SEC File Number	001-38223
Address of Issuer	222 Berkeley Street, 12th Floor BOSTON MASSACHUSETTS 02116
Phone	8572644280
Name of Person for Whose Account the Securities are To Be Sold	JOSEPH J SHULMAN
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	Officer

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	5079	597290.40	68852082	08/13/2026	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	08/13/2026	Exercise of Stock Options	Issuer			2024	08/13/2026	Cash
Common	02/01/2025	Restricted Stock Units	Issuer			3055	02/01/2025	N/A

* 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	The securities to be sold were acquired upon the vesting of restricted stock units during the period of 2/1/2025 through 2/11/2025
Date of Notice	08/13/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	12/15/2025
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/ Joseph Shulman
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)