Mcgirr David W J - Net Worth and Insider Trading
Mcgirr David W J Net Worth
The estimated net worth of Mcgirr David W J is at least $10 Million dollars as of 2025-07-15. Mcgirr David W J is the Director of Insmed Inc and owns about 97,723 shares of Insmed Inc (INSM) stock worth over $10 Million. Mcgirr David W J is the Director of Rhythm Pharmaceuticals Inc and owns about 3,000 shares of Rhythm Pharmaceuticals Inc (RYTM) stock worth over $267,450. Mcgirr David W J is also the Director of Relypsa Inc and owns about 2,729 shares of Relypsa Inc (RLYP) stock worth over $87,301. Details can be seen in Mcgirr David W J'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 Mcgirr David W J has not made any transactions after 2025-06-04 and currently still holds the listed stock(s). Please note that this estimate may not reflect the actual net worth.

Transaction Summary of Mcgirr David W J
Mcgirr David W J Insider Ownership Reports
Based on ownership reports from SEC filings, as the reporting owner, Mcgirr David W J owns 6 companies in total, including Rhythm Pharmaceuticals Inc (RYTM) , X4 Pharmaceuticals Inc (XFOR) , and Insmed Inc (INSM) among others .
Click here to see the complete history of Mcgirr David W J’s form 4 insider trades.
Insider Ownership Summary of Mcgirr David W J
Ticker | Company | Transaction Date | Type of Owner |
---|---|---|---|
RYTM | Rhythm Pharmaceuticals Inc | 2025-06-03 | director |
XFOR | X4 Pharmaceuticals Inc | 2017-11-15 | director |
INSM | Insmed Inc | 2025-06-04 | director |
![]() | ![]() | 2019-06-25 | director |
![]() | ![]() | 2017-06-28 | director |
![]() | ![]() | 2016-09-01 | director |
Mcgirr David W J Latest Holdings Summary
Mcgirr David W J currently owns a total of 3 stocks. Among these stocks, Mcgirr David W J owns 97,723 shares of Insmed Inc (INSM) as of June 4, 2025, with a value of $10 Million and a weighting of 96.56%. Mcgirr David W J owns 3,000 shares of Rhythm Pharmaceuticals Inc (RYTM) as of June 3, 2025, with a value of $267,450 and a weighting of 2.59%. Mcgirr David W J also owns 2,729 shares of Relypsa Inc (RLYP) as of June 7, 2016, with a value of $87,301 and a weighting of 0.85%.
Latest Holdings of Mcgirr David W J
Ticker | Company | Latest Transaction Date | Shares Owned | Current Price ($) | Current Value ($) |
---|---|---|---|---|---|
INSM | Insmed Inc | 2025-06-04 | 97,723 | 101.89 | 9,956,996 |
RYTM | Rhythm Pharmaceuticals Inc | 2025-06-03 | 3,000 | 89.15 | 267,450 |
RLYP | Relypsa Inc | 2016-06-07 | 2,729 | 31.99 | 87,301 |
Holding Weightings of Mcgirr David W J
Mcgirr David W J Form 4 Trading Tracker
According to the SEC Form 4 filings, Mcgirr David W J has made a total of 1 transactions in Insmed Inc (INSM) over the past 5 years, including 0 buys and 1 sells. The most-recent trade in Insmed Inc is the sale of 6,250 shares on June 4, 2025, which brought Mcgirr David W J around $451,562.
According to the SEC Form 4 filings, Mcgirr David W J has made a total of 1 transactions in Rhythm Pharmaceuticals Inc (RYTM) over the past 5 years, including 0 buys and 1 sells. The most-recent trade in Rhythm Pharmaceuticals Inc is the sale of 65,431 shares on June 3, 2025, which brought Mcgirr David W J around $4 Million.
According to the SEC Form 4 filings, Mcgirr David W J has made a total of 0 transactions in Relypsa Inc (RLYP) over the past 5 years. The most-recent trade in Relypsa Inc is the sale of 1,013 shares on June 7, 2016, which brought Mcgirr David W J around $19,591.
Insider Trading History of Mcgirr David W J
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Mcgirr David W J Trading Performance
Mcgirr David W J Ownership Network
Ownership Network List of Mcgirr David W J
Ownership Network Relation of Mcgirr David W J

Mcgirr David W J Owned Company Details
What does Rhythm Pharmaceuticals Inc do?
Who are the key executives at Rhythm Pharmaceuticals Inc?
Mcgirr David W J is the director of Rhythm Pharmaceuticals Inc. Other key executives at Rhythm Pharmaceuticals Inc include Corporate Controller & CAO Christopher Paul German , Chief Human Resources Officer Pamela J. Cramer , and CFO and Treasurer Hunter C Smith .
Rhythm Pharmaceuticals Inc (RYTM) Insider Trades Summary
Over the past 18 months, Mcgirr David W J made 1 insider transaction in Rhythm Pharmaceuticals Inc (RYTM) with a net sale of 65,431. Other recent insider transactions involving Rhythm Pharmaceuticals Inc (RYTM) include a net sale of 137,211 shares made by Pamela J. Cramer , a net sale of 155,853 shares made by Joseph Shulman , and a net sale of 118,525 shares made by Jennifer Chien .
In summary, during the past 3 months, insiders sold 226,124 shares of Rhythm Pharmaceuticals Inc (RYTM) in total and bought 0 shares, with a net sale of 226,124 shares. During the past 18 months, 920,276 shares of Rhythm Pharmaceuticals Inc (RYTM) were sold and 0 shares were bought by its insiders, resulting in a net sale of 920,276 shares.
Rhythm Pharmaceuticals Inc (RYTM)'s detailed insider trading history can be found in Insider Trading Tracker table.
Rhythm Pharmaceuticals Inc Insider Transactions
Mcgirr David W J Mailing Address
Above is the net worth, insider trading, and ownership report for Mcgirr David W J. Based on the public information released on the U.S. Securities and Exchange Commission (SEC) website, Mcgirr David W J's mailing address is: Greenwich Ct 06830.