Rock Springs Capital Management LP Rhythm Pharmaceuticals, Inc. Transaction History

Rock Springs Capital Management LP

$1.5 Billion
Q3 2025

A detailed history of Rock Springs Capital Management LP transactions in Rhythm Pharmaceuticals, Inc. stock. As of the latest transaction made, Rock Springs Capital Management LP holds 717,102 shares of RYTM stock, worth $71.3 Million. This represents 4.84% of its overall portfolio holdings.

Number of Shares

717,102

Previous 861,153 16.73%

Holding current value

$71.3 Million

Previous $54.4 Million 33.09%

% of portfolio

4.84%

Previous 3.69%

25 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q3 2025 Nov 14, 2025	SELL	$65.14 - $104.57 $9.38 Million - $15.1 Million	-144,051 Reduced 16.73%	717,102 $72.4 Million
Q2 2025 Aug 14, 2025	BUY	$46.95 - $68.11 $1.27 Million - $1.84 Million	26,965 Added 3.23%	861,153 $54.4 Million
Q1 2025 May 15, 2025	SELL	$48.56 - $61.02 $16 Million - $20 Million	-328,530 Reduced 28.26%	834,188 $44.2 Million
Q4 2024 Feb 14, 2025	SELL	$46.91 - $67.33 $3.07 Million - $4.4 Million	-65,375 Reduced 5.32%	1,162,718 $65 Million
Q3 2024 Nov 14, 2024	SELL	$40.81 - $55.0 $2.14 Million - $2.88 Million	-52,400 Reduced 4.09%	1,228,093 $64.3 Million

Q2 2024 Aug 14, 2024	SELL	$35.41 - $44.37 $8.58 Million - $10.8 Million	-242,400 Reduced 15.92%	1,280,493 $52.6 Million
Q4 2023 Feb 14, 2024	SELL	$21.39 - $49.64 $1.59 Million - $3.68 Million	-74,230 Reduced 4.65%	1,522,893 $70 Million
Q1 2023 May 15, 2023	SELL	$16.88 - $34.24 $2.76 Million - $5.61 Million	-163,742 Reduced 9.3%	1,597,123 $28.5 Million
Q3 2022 Nov 14, 2022	BUY	$4.3 - $30.85 $1.54 Million - $11 Million	357,567 Added 25.48%	1,760,865 $43.1 Million
Q2 2022 Aug 15, 2022	BUY	$3.12 - $12.25 $518,768 - $2.04 Million	166,272 Added 13.44%	1,403,298 $5.82 Million
Q1 2022 May 16, 2022	BUY	$6.13 - $12.24 $3.74 Million - $7.46 Million	609,846 Added 97.24%	1,237,026 $14.3 Million
Q4 2021 Feb 14, 2022	BUY	$8.62 - $13.9 $129,299 - $208,500	15,000 Added 2.45%	627,180 $6.26 Million
Q3 2021 Nov 15, 2021	BUY	$11.68 - $20.72 $68,912 - $122,248	5,900 Added 0.97%	612,180 $8 Million
Q2 2021 Aug 16, 2021	BUY	$18.52 - $22.55 $129,640 - $157,850	7,000 Added 1.17%	606,280 $11.9 Million
Q1 2021 May 17, 2021	BUY	$20.25 - $39.49 $2.21 Million - $4.3 Million	108,941 Added 22.22%	599,280 $12.7 Million
Q4 2020 Feb 16, 2021	BUY	$21.17 - $32.61 $555,776 - $856,110	26,253 Added 5.66%	490,339 $14.6 Million
Q3 2020 Nov 16, 2020	SELL	$18.13 - $30.61 $870,693 - $1.47 Million	-48,025 Reduced 9.38%	464,086 $10.1 Million
Q2 2020 Aug 14, 2020	BUY	$14.41 - $25.35 $174,519 - $307,013	12,111 Added 2.42%	512,111 $11.4 Million
Q1 2020 May 15, 2020	BUY	$13.16 - $22.9 $2.04 Million - $3.55 Million	155,000 Added 44.93%	500,000 $7.61 Million
Q4 2019 Feb 14, 2020	BUY	$19.53 - $25.5 $781,200 - $1.02 Million	40,000 Added 13.11%	345,000 $7.92 Million
Q3 2019 Nov 14, 2019	BUY	$18.62 - $24.51 $1.3 Million - $1.72 Million	70,000 Added 29.79%	305,000 $6.59 Million
Q2 2019 Aug 14, 2019	BUY	$21.11 - $28.48 $390,535 - $526,880	18,500 Added 8.55%	235,000 $5.17 Million
Q4 2018 Feb 14, 2019	BUY	$24.11 - $31.34 $36,165 - $47,010	1,500 Added 0.7%	216,500 $5.82 Million
Q2 2018 Aug 14, 2018	BUY	$17.02 - $35.2 $2.44 Million - $5.05 Million	143,500 Added 200.7%	215,000 $6.72 Million
Q4 2017 Feb 14, 2018	BUY	$22.0 - $30.51 $1.57 Million - $2.18 Million	71,500	71,500 $2.08 Million

Others Institutions Holding RYTM

# of Institutions

282

Shares Held

486M

Call Options Held

498K

Put Options Held

150K

View Full List

About RHYTHM PHARMACEUTICALS, INC.

Ticker RYTM
Exchange NASDAQ
Sector Healthcare
Industry Biotechnology
Shares Outstandng 55,720,000
Market Cap $5.54B
Description
Rhythm Pharmaceuticals, Inc., a commercial-stage biopharmaceutical company, focuses on the development and commercialization of therapeutics for the treatment of rare genetic diseases of obesity. The company's lead product candidate is IMCIVREE, a potent melanocortin-4 receptor for the treatment of pro-opiomelanocortin (POMC), proprotein convert...

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Rock Springs Capital Management LP Rhythm Pharmaceuticals, Inc. Transaction History