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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1649904	Rhythm Pharmaceuticals Inc.	RYTM	Pharmaceutical Preparations (2834)	462159271

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1714105	Nithya Desikan	222 Berkeley Street, 12Th Floor Boston MA 02116	Chief Commercial Officer	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	2020-08-31	25,000	$6.88	68,602	No	4	M	Direct
Common Stock	Disposition	2020-08-31	25,000	$30.00	43,602	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	Employee Stock Option (Right to Buy)	Disposition	2020-08-31	25,000	$0.00	25,000	$6.88

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
97,961		2027-08-08	No	4	M	Direct

Footnotes

On August 31, 2020, Ms. Desikan exercised and sold 25,000 shares pursuant to a plan of disposition adopted in accordance with Rule 10b5-1 of the Securities Exchange Act of 1934, as amended.
The stock options were granted on August 9, 2017. 32,715 of the total shares vested and became exercisable immediately upon grant. 25% of the remaining stock options vested and became exercisable on July 23, 2018. 75% of the remaining stock options shall vest in 36 successive, equal monthly installments with the first such installment vesting and becoming exercisable on August 23, 2018.