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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1649904	Rhythm Pharmaceuticals Inc.	RYTM	()	4

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1260835	Paul Christopher German	222 Berkeley Street, 12Th Floor Boston MA 02116	Corporate Controller & Cao	No	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2025-03-20	1,163	$0.00	3,233	No	4	M	Direct
Common Stock	Disposition	2025-03-21	344	$54.23	2,889	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	M	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Restricted Stock Units	Disposition	2025-03-20	1,163	$0.00	1,163	$0.00

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
2,324			No	4	M	Direct

Footnotes

Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.
The sale reported in this Form 4 was effected pursuant to non-Rule 10b5-1 trading arrangement, as defined in Item 408(a) of Regulation S-K, solely with the intent to cover withholding taxes in connection with the vesting of certain previously reported restricted stock units.
The restricted stock units have vested or will vest as to 25% of the total shares on each of March 20, 2024, March 20, 2025, March 20, 2026 and March 20, 2027, subject to the Reporting Person's continued service on each such vesting date. The restricted stock units have no expiration date.