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

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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.
LIMIT LIMIT 2023-06-23 Chief Legal Officer
LIMIT LIMIT 2026-01-07 Chief Legal Officer
LIMIT LIMIT 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.

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.
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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.

John B Moriarty Trading Performance

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

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See GF Score, valuation, financials, and warning signs for every stock John B Moriarty owns.
View ALXN Analysis

John B Moriarty Ownership Network

Ownership Network List of John B Moriarty

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Ownership Network Relation of John B Moriarty

Insider Network Chart


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.

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Portola Pharmaceuticals Inc Insider Transactions

No Available Data

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.