John B Moriarty - Net Worth and Insider Trading
John B Moriarty Net Worth
The estimated net worth of John B Moriarty is at least $19 Million dollars as of 2026-09-11. John B Moriarty is the EVP & General Counsel of Alexion Pharmaceuticals Inc and owns about 74,537 shares of Alexion Pharmaceuticals Inc (ALXN) stock worth over $14 Million. John B Moriarty is also the Chief Legal Officer of Avidity Biosciences Inc and owns about 74,557 shares of Avidity Biosciences Inc (RNAM) stock worth over $5 Million. Details can be seen in John B Moriarty'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 John B Moriarty has not made any transactions after 2026-01-07 and currently still holds the listed stock(s). Please note that this estimate may not reflect the actual net worth.
Transaction Summary of John B Moriarty
John B Moriarty Insider Ownership Reports
Based on ownership reports from SEC filings, as the reporting owner, John B Moriarty owns 6 companies in total, including Portola Pharmaceuticals Inc (PTLA) , Alexion Pharmaceuticals Inc (ALXN) , and Olema Pharmaceuticals inc (OLMA) among others .
Click here to see the complete history of John B Moriarty’s form 4 insider trades.
Insider Ownership Summary of John B Moriarty
| Ticker | Company | Transaction Date | Type of Owner |
|---|---|---|---|
| PTLA | Portola Pharmaceuticals Inc | 2020-07-02 | EVP & General Counsel |
| ALXN | Alexion Pharmaceuticals Inc | 2018-02-08 | EVP & General Counsel |
| OLMA | Olema Pharmaceuticals inc | 2020-11-18 | EVP & Ch. Legal Officer & Sec. |
| 2023-06-23 | Chief Legal Officer | ||
| 2026-01-07 | Chief Legal Officer | ||
| 2026-06-17 | Chief Legal Officer |
John B Moriarty Latest Holdings Summary
John B Moriarty currently owns a total of 2 stocks. Among these stocks, John B Moriarty owns 74,537 shares of Alexion Pharmaceuticals Inc (ALXN) as of February 8, 2018, with a value of $14 Million and a weighting of 71.89%. John B Moriarty also owns 74,557 shares of Avidity Biosciences Inc (RNAM) as of January 7, 2026, with a value of $5 Million and a weighting of 28.11%.
Latest Holdings of John B Moriarty
| Ticker | Company | Latest Transaction Date | Shares Owned | Current Price ($) | Current Value ($) |
|---|---|---|---|---|---|
| ALXN | Alexion Pharmaceuticals Inc | 2018-02-08 | 74,537 | 182.50 | 13,603,003 |
| RNAM | Avidity Biosciences Inc | 2026-01-07 | 74,557 | 71.34 | 5,319,044 |
Holding Weightings of John B Moriarty
John B Moriarty Form 4 Trading Tracker
According to the SEC Form 4 filings, John B Moriarty has made a total of 0 transactions in Alexion Pharmaceuticals Inc (ALXN) over the past 5 years. The most-recent trade in Alexion Pharmaceuticals Inc is the sale of 3,363 shares on February 8, 2018, which brought John B Moriarty around $389,099.
According to the SEC Form 4 filings, John B Moriarty has made a total of 2 transactions in Avidity Biosciences Inc (RNAM) over the past 5 years, including 0 buys and 2 sells. The most-recent trade in Avidity Biosciences Inc is the sale of 2,374 shares on January 7, 2026, which brought John B Moriarty around $171,474.
Insider Trading History of John B Moriarty
* The information on this page (including Insider Trading Shares, Share Changes, Cost, etc.) is sourced exclusively from Form 4 filings and does not incorporate any data from 13F or 13D/G filings. As a result, it may differ from the values shown on the Guru page.
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John B Moriarty Trading Performance
John B Moriarty Ownership Network
Ownership Network List of John B Moriarty
Ownership Network Relation of John B Moriarty

John B Moriarty Owned Company Details
What does Portola Pharmaceuticals Inc do?
Who are the key executives at Portola Pharmaceuticals Inc?
John B Moriarty is the EVP & General Counsel of Portola Pharmaceuticals Inc. Other key executives at Portola Pharmaceuticals Inc include EVP and CFO Mardi Dier , EVP & CMO Rajiv Patni , and director & President and CEO J. Scott Garland .
Portola Pharmaceuticals Inc (PTLA) Insider Trades Summary
In summary, during the past 3 months, insiders sold 0 shares of Portola Pharmaceuticals Inc (PTLA) in total and bought 0 shares, with a net sale of 0 shares. During the past 18 months, 0 shares of Portola Pharmaceuticals Inc (PTLA) were sold and 0 shares were bought by its insiders, resulting in a net sale of 0 shares.
Portola Pharmaceuticals Inc (PTLA)'s detailed insider trading history can be found in Insider Trading Tracker table.
Portola Pharmaceuticals Inc Insider Transactions
John B Moriarty Mailing Address
Above is the net worth, insider trading, and ownership report for John B Moriarty. Based on the public information released on the U.S. Securities and Exchange Commission (SEC) website, John B Moriarty's mailing address is: San Diego Ca 92121.