Rhythm Pharmaceuticals Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

NasdaqGM:RYTM Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Role	Shares	Max Price
15 Feb 24	BuyUS$42,389,006	Perceptive Advisors LLC	Company		838,556	US$50.55

Insider Trading Volume

Insider Buying: Insufficient data to determine if insiders have bought more shares than they have sold in the past 3 months.

Ownership Breakdown

What is the ownership structure of RYTM?
Owner Type	Number of Shares	Ownership Percentage
Private Companies	9,708	0.014%
Individual Insiders	358,739	0.518%
Hedge Funds	6,398,365	9.24%
VC/PE Firms	8,598,991	12.4%
Institutions	53,905,448	77.8%

Dilution of Shares: Shareholders have been diluted in the past year, with total shares outstanding growing by 7.2%.

Top Shareholders

Top 25 shareholders own 98.24% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
13.2%	PRIMECAP Management Company	8,052,648	US$330.0m	-2.6%	0.23%
10.5%	Baker Bros. Advisors LP	6,398,365	US$262.2m	-4.54%	3.05%
10.4%	BlackRock, Inc.	6,351,750	US$260.3m	2.45%	no data
8.74%	RA Capital Management, L.P.	5,330,412	US$218.4m	-6.09%	2.77%
8.18%	Goldman Sachs Group, Investment Banking and Securities Investments	4,990,024	US$204.5m	-1.61%	0.1%
5.36%	Perceptive Advisors LLC	3,268,579	US$133.9m	51.7%	2.93%
5.29%	The Vanguard Group, Inc.	3,226,938	US$132.2m	7.04%	no data
4.77%	New Enterprise Associates, Inc.	2,909,956	US$119.3m	0%	5.98%
3.89%	Frazier Life Sciences Management, LP	2,371,304	US$97.2m	0%	3.94%
3.79%	Federated Hermes, Inc.	2,310,955	US$94.7m	-1.3%	0.24%
3.62%	State Street Global Advisors, Inc.	2,206,018	US$90.4m	-6.76%	no data
2.87%	Polar Capital Holdings Plc	1,750,000	US$71.7m	-30%	0.29%
2.54%	Commodore Capital LP	1,550,000	US$63.5m	-25.3%	4.06%
2.5%	Rock Springs Capital Management LP	1,522,893	US$62.4m	-4.65%	1.66%
1.91%	Pictet Asset Management Limited	1,163,961	US$47.7m	61,200%	0.03%
1.84%	Geode Capital Management, LLC	1,119,129	US$45.9m	7.09%	no data
1.2%	Checkpoint Capital, LLC, Asset Management Arm	730,000	US$29.9m	0%	21.72%
1.03%	Medical Strategy GmbH, Asset Management Arm	626,416	US$25.7m	0%	1.44%
1.02%	Janus Henderson Group plc	621,892	US$25.5m	-41.7%	0.01%
1%	Opaleye Management Inc.	610,000	US$25.0m	-6.58%	6.07%
0.98%	Driehaus Capital Management LLC	598,905	US$24.5m	118%	0.17%
0.94%	T. Rowe Price Group, Inc.	572,297	US$23.5m	172%	no data
0.9%	Cormorant Asset Management, LP	550,000	US$22.5m	-35.3%	1.18%
0.88%	OrbiMed Advisors LLC	536,642	US$22.0m	-8.05%	0.29%
0.87%	FMR LLC	529,110	US$21.7m	-39.1%	no data