William D Young - Net Worth and Insider Trading
William D Young Net Worth
The estimated net worth of William D Young is at least $5 Million dollars as of 2025-04-26. William D Young is the Director of Vertex Pharmaceuticals Inc and owns about 9,311 shares of Vertex Pharmaceuticals Inc (VRTX) stock worth over $5 Million. Details can be seen in William D Young'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 William D Young has not made any transactions after 2020-01-02 and currently still holds the listed stock(s). Please note that this estimate may not reflect the actual net worth.

Transaction Summary of William D Young
William D Young Insider Ownership Reports
Based on ownership reports from SEC filings, as the reporting owner, William D Young owns 5 companies in total, including Praxis Precision Medicines Inc (PRAX) , Vertex Pharmaceuticals Inc (VRTX) , and Theravance Biopharma Inc (TBPH) among others .
Click here to see the complete history of William D Young’s form 4 insider trades.
Insider Ownership Summary of William D Young
Ticker | Company | Transaction Date | Type of Owner |
---|---|---|---|
PRAX | Praxis Precision Medicines Inc | 2020-10-15 | director |
VRTX | Vertex Pharmaceuticals Inc | 2020-01-02 | director |
TBPH | Theravance Biopharma Inc | 2014-05-14 | director |
![]() | ![]() | 2010-09-22 | director |
![]() | ![]() | 2004-10-04 | director |
William D Young Latest Holdings Summary
William D Young currently owns a total of 1 stock. William D Young owns 9,311 shares of Vertex Pharmaceuticals Inc (VRTX) as of January 2, 2020, with a value of $5 Million.
Latest Holdings of William D Young
Ticker | Company | Latest Transaction Date | Shares Owned | Current Price ($) | Current Value ($) |
---|---|---|---|---|---|
VRTX | Vertex Pharmaceuticals Inc | 2020-01-02 | 9,311 | 493.84 | 4,598,144 |
Holding Weightings of William D Young
William D Young Form 4 Trading Tracker
According to the SEC Form 4 filings, William D Young has made a total of 0 transactions in Vertex Pharmaceuticals Inc (VRTX) over the past 5 years. The most-recent trade in Vertex Pharmaceuticals Inc is the sale of 20,000 shares on January 2, 2020, which brought William D Young around $4 Million.
Insider Trading History of William D Young
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William D Young Trading Performance
William D Young Ownership Network
Ownership Network List of William D Young
Ownership Network Relation of William D Young

William D Young Owned Company Details
What does Praxis Precision Medicines Inc do?
Who are the key executives at Praxis Precision Medicines Inc?
William D Young is the director of Praxis Precision Medicines Inc. Other key executives at Praxis Precision Medicines Inc include General Counsel and Secretary Alex Nemiroff , Principal Accounting Officer Lauren Mastrocola , and Chief Executive Officer Marcio Souza .
Praxis Precision Medicines Inc (PRAX) Insider Trades Summary
Over the past 18 months, William D Young made no insider transaction in Praxis Precision Medicines Inc (PRAX). Other recent insider transactions involving Praxis Precision Medicines Inc (PRAX) include a net sale of 8,239 shares made by Alex Nemiroff , and a net sale of 5,188 shares made by Lauren Mastrocola .
In summary, during the past 3 months, insiders sold 0 shares of Praxis Precision Medicines Inc (PRAX) in total and bought 0 shares, with a net sale of 0 shares. During the past 18 months, 13,427 shares of Praxis Precision Medicines Inc (PRAX) were sold and 0 shares were bought by its insiders, resulting in a net sale of 13,427 shares.
Praxis Precision Medicines Inc (PRAX)'s detailed insider trading history can be found in Insider Trading Tracker table.
Praxis Precision Medicines Inc Insider Transactions
William D Young Mailing Address
Above is the net worth, insider trading, and ownership report for William D Young. Based on the public information released on the U.S. Securities and Exchange Commission (SEC) website, William D Young's mailing address is: South San Francisco Ca 94080.