Rock Springs Capital Management Lp - Net Worth and Insider Trading

Rock Springs Capital Management Lp Net Worth

The estimated net worth of Rock Springs Capital Management Lp is at least $11 Million dollars as of 2024-11-13. Rock Springs Capital Management Lp is the 10% Owner of Alpine Immune Sciences Inc and owns about 141,090 shares of Alpine Immune Sciences Inc (ALPN) stock worth over $9 Million. Rock Springs Capital Management Lp is also the 10% Owner of Xilio Therapeutics Inc and owns about 1,407,766 shares of Xilio Therapeutics Inc (XLO) stock worth over $2 Million. Details can be seen in Rock Springs Capital Management Lp's Latest Holdings Summary section.

Disclaimer: The insider information is derived from SEC filings. The estimated net worth is based on the final shares held after open market or private purchases and sales of common stock with a transaction code of "P" or "S" on Form 4, assuming that Rock Springs Capital Management Lp has not made any transactions after 2021-10-26 and currently still holds the listed stock(s). Please note that this estimate may not reflect the actual net worth.

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Transaction Summary of Rock Springs Capital Management Lp

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Rock Springs Capital Management Lp Insider Ownership Reports

Based on ownership reports from SEC filings, as the reporting owner, Rock Springs Capital Management Lp owns 11 companies in total, including Inozyme Pharma Inc (INZY) , Imara Inc (IMRA) , and Homology Medicines Inc (FIXX) among others .

Click here to see the complete history of Rock Springs Capital Management Lp’s form 4 insider trades.

Insider Ownership Summary of Rock Springs Capital Management Lp

Ticker Comapny Transaction Date Type of Owner
INZY Inozyme Pharma Inc 2020-07-23 10 percent owner
IMRA Imara Inc 2020-03-11 10 percent owner
FIXX Homology Medicines Inc 2018-03-27 10 percent owner
LIMIT LIMIT 2015-06-22 10 percent owner
LIMIT LIMIT 2014-04-10 10 percent owner
LIMIT LIMIT 2021-12-30 10 percent owner
LIMIT LIMIT 2020-10-29 10 percent owner
LIMIT LIMIT 2021-10-06 10 percent owner
LIMIT LIMIT 2021-10-26 10 percent owner
LIMIT LIMIT 2021-06-16 10 percent owner
LIMIT LIMIT 2020-03-11 10 percent owner

Rock Springs Capital Management Lp Latest Holdings Summary

Rock Springs Capital Management Lp currently owns a total of 2 stocks. Among these stocks, Rock Springs Capital Management Lp owns 141,090 shares of Alpine Immune Sciences Inc (ALPN) as of June 22, 2015, with a value of $9 Million and a weighting of 85.77%. Rock Springs Capital Management Lp also owns 1,407,766 shares of Xilio Therapeutics Inc (XLO) as of October 26, 2021, with a value of $2 Million and a weighting of 14.23%.

Latest Holdings of Rock Springs Capital Management Lp

Ticker Comapny Latest Transaction Date Shares Owned Current Price ($) Current Value ($)
ALPN Alpine Immune Sciences Inc 2015-06-22 141,090 64.97 9,166,617
XLO Xilio Therapeutics Inc 2021-10-26 1,407,766 1.08 1,520,387

Holding Weightings of Rock Springs Capital Management Lp


Rock Springs Capital Management Lp Form 4 Trading Tracker

According to the SEC Form 4 filings, Rock Springs Capital Management Lp has made a total of 0 transactions in Alpine Immune Sciences Inc (ALPN) over the past 5 years. The most-recent trade in Alpine Immune Sciences Inc is the acquisition of 50,000 shares on June 22, 2015, which cost Rock Springs Capital Management Lp around $3 Million.

According to the SEC Form 4 filings, Rock Springs Capital Management Lp has made a total of 1 transactions in Xilio Therapeutics Inc (XLO) over the past 5 years, including 1 buys and 0 sells. The most-recent trade in Xilio Therapeutics Inc is the acquisition of 500,000 shares on October 26, 2021, which cost Rock Springs Capital Management Lp around $8 Million.

Insider Trading History of Rock Springs Capital Management Lp

No transactions are available. GuruFocus only tracks and displays the purchase and sale of non-derivative security in open market or private transactions from SEC filings with the transaction code of P or S.
Total 0
  • 1
Only the transactions in Open Market or Private Sale at the market prices are included. Other transactions such as conversion of derivative security or exercise of options are not included. Insiders are limited to only officers and/or directors of the company.

Rock Springs Capital Management Lp Trading Performance

GuruFocus tracks the stock performance after each of Rock Springs Capital Management Lp's buying transactions within different timeframes. To be detailed, the average return of stocks after 3 months bought by Rock Springs Capital Management Lp is -6.42%. GuruFocus also compares Rock Springs Capital Management Lp's trading performance to market benchmark return within the same time period. The performance of stocks bought by Rock Springs Capital Management Lp within 3 months outperforms 1 times out of 2 transactions in total compared to the return of S&P 500 within the same period.

You can select different timeframes to see how Rock Springs Capital Management Lp's insider trading performs compared to the benchmark.

Please note GuruFocus will not track the insiders’ transaction performance if he/she does not have buying transactions.

Performance of Rock Springs Capital Management Lp

Average Return

LIMIT
Average return per transaction

Outperforming Transactions

LIMIT
0 out of 2 outperforming transactions.
Each transaction is measured over a period and compared to .
1 Month 3 Months 6 Months 1 Year 2 Years 3 Years
Return(%) 22.21 LIMIT LIMIT LIMIT LIMIT LIMIT
Relative Return to S&P 500(%) 22.2 LIMIT LIMIT LIMIT LIMIT LIMIT

Rock Springs Capital Management Lp Ownership Network

Ownership Network List of Rock Springs Capital Management Lp

No Data

Ownership Network Relation of Rock Springs Capital Management Lp

Insider Network Chart

Rock Springs Capital Management Lp Owned Company Details

What does Inozyme Pharma Inc do?

Who are the key executives at Inozyme Pharma Inc?

Rock Springs Capital Management Lp is the 10 percent owner of Inozyme Pharma Inc. Other key executives at Inozyme Pharma Inc include director & 10 percent owner Robert Lorne Hopfner , COO Matthew Winton , and 10 percent owner Longitude Capital Partners Iii, Llc .

Inozyme Pharma Inc (INZY) Insider Trades Summary

Over the past 18 months, Rock Springs Capital Management Lp made no insider transaction in Inozyme Pharma Inc (INZY). Other recent insider transactions involving Inozyme Pharma Inc (INZY) include a net purchase of 833,333 shares made by Pivotal Bioventure Partners Fund I G.p., L.p. , a net purchase of 833,333 shares made by Robert Lorne Hopfner , and a net sale of 7,523 shares made by Douglas A Treco .

In summary, during the past 3 months, insiders sold 0 shares of Inozyme Pharma Inc (INZY) in total and bought 0 shares, with a net sale of 0 shares. During the past 18 months, 7,523 shares of Inozyme Pharma Inc (INZY) were sold and 1,666,666 shares were bought by its insiders, resulting in a net purchase of 1,659,143 shares.

Inozyme Pharma Inc (INZY)'s detailed insider trading history can be found in Insider Trading Tracker table.

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Inozyme Pharma Inc Insider Transactions

No Available Data

Rock Springs Capital Management Lp Mailing Address

Above is the net worth, insider trading, and ownership report for Rock Springs Capital Management Lp. You might contact Rock Springs Capital Management Lp via mailing address: 650 South Exeter Street, Suite 1070, Baltimore Md 21202.