Michael Mason - Net Worth and Insider Trading

Michael Mason Net Worth

The estimated net worth of Michael Mason is at least $289,437 dollars as of 2024-12-27. Michael Mason is the EVP, CFO & Treasurer of Karyopharm Therapeutics Inc and owns about 391,054 shares of Karyopharm Therapeutics Inc (KPTI) stock worth over $234,632. Michael Mason is also the VP, Finance and Treasurer of Alnylam Pharmaceuticals Inc and owns about 226 shares of Alnylam Pharmaceuticals Inc (ALNY) stock worth over $54,805. Details can be seen in Michael Mason'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 Michael Mason has not made any transactions after 2024-09-04 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 Michael Mason

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Michael Mason Insider Ownership Reports

Based on ownership reports from SEC filings, as the reporting owner, Michael Mason owns 2 companies in total, including Karyopharm Therapeutics Inc (KPTI) , and Alnylam Pharmaceuticals Inc (ALNY) .

Click here to see the complete history of Michael Mason’s form 4 insider trades.

Insider Ownership Summary of Michael Mason

Ticker Comapny Transaction Date Type of Owner
KPTI Karyopharm Therapeutics Inc 2024-09-04 EVP & CFO & Treasurer
ALNY Alnylam Pharmaceuticals Inc 2018-01-04 VP & Finance and Treasurer

Michael Mason Latest Holdings Summary

Michael Mason currently owns a total of 2 stocks. Among these stocks, Michael Mason owns 391,054 shares of Karyopharm Therapeutics Inc (KPTI) as of September 4, 2024, with a value of $234,632 and a weighting of 81.06%. Michael Mason also owns 226 shares of Alnylam Pharmaceuticals Inc (ALNY) as of January 4, 2018, with a value of $54,805 and a weighting of 18.94%.

Latest Holdings of Michael Mason

Ticker Comapny Latest Transaction Date Shares Owned Current Price ($) Current Value ($)
KPTI Karyopharm Therapeutics Inc 2024-09-04 391,054 0.60 234,632
ALNY Alnylam Pharmaceuticals Inc 2018-01-04 226 242.50 54,805

Holding Weightings of Michael Mason


Michael Mason Form 4 Trading Tracker

According to the SEC Form 4 filings, Michael Mason has made a total of 13 transactions in Karyopharm Therapeutics Inc (KPTI) over the past 5 years, including 0 buys and 13 sells. The most-recent trade in Karyopharm Therapeutics Inc is the sale of 7,050 shares on September 4, 2024, which brought Michael Mason around $5,076.

According to the SEC Form 4 filings, Michael Mason has made a total of 0 transactions in Alnylam Pharmaceuticals Inc (ALNY) over the past 5 years. The most-recent trade in Alnylam Pharmaceuticals Inc is the sale of 36,745 shares on January 4, 2018, which brought Michael Mason around $5 Million.

Insider Trading History of Michael Mason

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.

Michael Mason Trading Performance

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

Michael Mason Ownership Network

Ownership Network List of Michael Mason

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Ownership Network Relation of Michael Mason

Insider Network Chart

Michael Mason Owned Company Details

What does Karyopharm Therapeutics Inc do?

Who are the key executives at Karyopharm Therapeutics Inc?

Michael Mason is the EVP & CFO & Treasurer of Karyopharm Therapeutics Inc. Other key executives at Karyopharm Therapeutics Inc include director & President and CEO Richard A. Paulson , SVP & General Counsel&Secretary Michael Mano , and SVP Sales & Commercial Ops Sohanya Roshan Cheng .

Karyopharm Therapeutics Inc (KPTI) Insider Trades Summary

Over the past 18 months, Michael Mason made 6 insider transaction in Karyopharm Therapeutics Inc (KPTI) with a net sale of 55,214. Other recent insider transactions involving Karyopharm Therapeutics Inc (KPTI) include a net sale of 165,766 shares made by Richard A. Paulson , a net sale of 34,041 shares made by Stuart Poulton , and a net sale of 39,720 shares made by Sohanya Roshan Cheng .

In summary, during the past 3 months, insiders sold 10,902 shares of Karyopharm Therapeutics Inc (KPTI) in total and bought 0 shares, with a net sale of 10,902 shares. During the past 18 months, 2,075,796 shares of Karyopharm Therapeutics Inc (KPTI) were sold and 41,140 shares were bought by its insiders, resulting in a net sale of 2,034,656 shares.

Karyopharm Therapeutics Inc (KPTI)'s detailed insider trading history can be found in Insider Trading Tracker table.

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Karyopharm Therapeutics Inc Insider Transactions

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Michael Mason Mailing Address

Above is the net worth, insider trading, and ownership report for Michael Mason. You might contact Michael Mason via mailing address: 300 3rd Street, Cambridge Ma 02142.

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