Rock Springs Capital Management LP

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Rock Springs Capital Management LP
CRD #168648
SEC #801-78511
CIK #0001595725, 0001735397
AUM 2,426.3 M (2026-03-24)
Employees 17 (47% Investors, 0% Brokers)
Phone410-220-0130
Address650 S Exeter Street
Baltimore, MD 21202
Source [IAPD] [EDGAR] [Website] [LinkedIn]
Total AUM ($B)
6.04.83.62.41.20.02010201520212027
Sector Form 13F Holdings Value ($B)
Revolution Medicines Inc 0.1
Lilly Eli & Co 0.1
Synta Pharmaceuticals Corp 0.1
Mirum Pharmaceuticals Inc 0.1
Argenx SE 0.1
Rhythm Pharmaceuticals Inc 0.1
Insmed Inc 0.1
Ascendis Pharma A/S 0.0
Xenon Pharmaceuticals Inc 0.0
Desert Gateway Inc 0.0
View All
Holdings by Sector ($B)
6.04.83.62.41.20.02013201720222027
Type Form D Funds Date Sold AUM
HF Four Pines Master Fund LP [2020-03-30] 186.0 M 311.1 M
Filed 2026-03-20 (D/A) · Exemption 506(b), 3(c), 3(c)(7) · Minimum $10,000,000 · Remaining Indefinite · Duration More than one year · Net Assets Decline to Disclose
HF Rock Springs Capital Master Fund LP [2014-01-22] 2,472.6 M 2,115.2 M
Filed 2026-01-21 (D/A) · Exemption 506(b), 3(c), 3(c)(7) · Remaining Indefinite · Duration More than one year · Net Assets Decline to Disclose
AUM Breakdown Accounts AUM ($B)
By Client Type
(a) Individuals (other than high net worth individuals) 0 0.0
(b) Individuals (high net worth individuals) 0 0.0
(c) Banking or thrift institutions 0 0.0
(d) Investment companies 0 0.0
(e) Business development companies 0 0.0
(f) Pooled investment vehicles 6 2.4
(g) Pension and profit sharing plans 0 0.0
(h) Charitable organizations 0 0.0
(i) State or municipal government entities 0 0.0
(j) Other investment advisers 0 0.0
(k) Insurance companies 0 0.0
(l) Sovereign wealth funds and foreign official institutions 0 0.0
(m) Corporations or other businesses not listed above 0 0.0
(n) Other 0 0.0
Total 6 2.4
By Discretionary
Discretionary 6 2.4
Non-Discretionary 0 0.0
Total 6 2.4
By Non-United States Persons
Non-United States Persons 0.6
United States Persons 1.9
Total 6 2.4
Form D Directors Role # Filings # Firms 2011 - 2026
Kris Jenner Executive Officer 7 2
Gordon Bussard Executive Officer 4 2
Graham McPhail Executive Officer 4 2
Rock Springs Capital Management LP Executive Officer 4 2
Rock Springs General Partner LLC Executive Officer 2 2
Four Pines General Partner LLC Executive Officer 2 2
EDGAR Form CIK 2011 - 2026
13F-HR [0001595725]
3 [0001595725]
4 [0001595725]
SC 13G [0001595725]
3 [0001735397]
4 [0001735397]
Form 13D/13G Filer Form 13D/13G Subject Filed
Rock Springs Capital Management LP Aclaris Therapeutics Inc [2024-11-22]
Rock Springs Capital Management LP Travere Therapeutics Inc [2024-05-01]
Rock Springs Capital Management LP Xilio Therapeutics Inc [2024-02-14]
Rock Springs Capital Management LP Agios Pharmaceuticals Inc [2023-02-14]
Rock Springs Capital Management LP Aeglea Biotherapeutics Inc [2023-02-14]
Rock Springs Capital Management LP Inozyme Pharma Inc [2022-04-25]
Rock Springs Capital Management LP Mereo Biopharma Group PLC [2022-02-15]
Rock Springs Capital Management LP Tempest Therapeutics Inc [2022-01-03]
Rock Springs Capital Management LP Compass Therapeutics Inc [2021-12-30]
Rock Springs Capital Management LP Tempest Therapeutics Inc [2021-07-08]
View All
Firm Profile (Form ADV)
Discretionary AUM$0.3B
ServesInstitutional
Fund TypesHedge Fund
LEI5493004NKG0T3VM7NZ08
Form 3/4/5 Subject 2011 - 2026
Rock Springs Capital Master Fund LP
Rock Springs Capital Management LP
Rock Springs Capital LLC
Tempest Therapeutics Inc
Xilio Therapeutics Inc
Four Pines Master Fund LP
Theseus Pharmaceuticals Inc
Verve Therapeutics Inc
Atea Pharmaceuticals Inc
Inozyme Pharma Inc
View All
Insider Transaction (Form 3/4/5) Date Action Shares Price Value ($)
Xilio Therapeutics Inc XLO
Common Stock
2021-10-26 Conversion 756,472
Xilio Therapeutics Inc XLO
Series C Preferred Stock · derivative
2021-10-26 Conversion 7,186,490
Xilio Therapeutics Inc XLO
Series C Preferred Stock · derivative
2021-10-26 Conversion 1,437,297
Xilio Therapeutics Inc XLO
Common Stock
2021-10-26 Buy 500,000 $16.00 8,000,000
Xilio Therapeutics Inc XLO
Common Stock
2021-10-26 Conversion 151,294
Theseus Pharmaceuticals Inc THRX
Series B Convertible Preferred Stock · derivative
2021-10-12 Conversion 349,320
Theseus Pharmaceuticals Inc THRX
Common Stock
2021-10-12 Buy 250,000 $16.00 4,000,000
Theseus Pharmaceuticals Inc THRX
Common Stock
2021-10-12 Conversion 87,329
Theseus Pharmaceuticals Inc THRX
Common Stock
2021-10-12 Conversion 349,320
Theseus Pharmaceuticals Inc THRX
Series B Convertible Preferred Stock · derivative
2021-10-12 Conversion 87,329
Verve Therapeutics Inc VERV
Common Stock
2021-06-21 Conversion 556,298
Verve Therapeutics Inc VERV
Common Stock
2021-06-21 Buy 370,000 $19.00 7,030,000
Verve Therapeutics Inc VERV
Common Stock
2021-06-21 Conversion 152,926
Verve Therapeutics Inc VERV
Series B Preferred Stock · derivative
2021-06-21 Conversion 1,416,023
Verve Therapeutics Inc VERV
Series B Preferred Stock · derivative
2021-06-21 Conversion 5,151,043
Atea Pharmaceuticals Inc AVIR
Series D Convertible Preferred Stock · derivative
2020-11-03 Conversion 178,063
Atea Pharmaceuticals Inc AVIR
Series D-1 Convertible Preferred Stock · derivative
2020-11-03 Conversion 104,340
Atea Pharmaceuticals Inc AVIR
Series D Convertible Preferred Stock · derivative
2020-11-03 Conversion 890,313
Atea Pharmaceuticals Inc AVIR
Common Stock
2020-11-03 Buy 7,292 $24.00 175,008
Atea Pharmaceuticals Inc AVIR
Common Stock
2020-11-03 Buy 242,708 $24.00 5,824,992
showing 20 of 38 most recent transactions
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