Mark P Stevenson - Net Worth and Insider Trading
Mark P Stevenson Net Worth
The estimated net worth of Mark P Stevenson is at least $61 Million dollars as of 2025-07-25. Mark P Stevenson is the Executive Vice President & COO of Thermo Fisher Scientific Inc and owns about 127,752 shares of Thermo Fisher Scientific Inc (TMO) stock worth over $61 Million. Mark P Stevenson is also the President & COO of aTyr Pharma Inc and owns about 3,550 shares of aTyr Pharma Inc (ATYR) stock worth over $19,720. Details can be seen in Mark P Stevenson'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 Mark P Stevenson has not made any transactions after 2021-12-01 and currently still holds the listed stock(s). Please note that this estimate may not reflect the actual net worth.
Transaction Summary of Mark P Stevenson
Mark P Stevenson Insider Ownership Reports
Based on ownership reports from SEC filings, as the reporting owner, Mark P Stevenson owns 2 companies in total, including Thermo Fisher Scientific Inc (TMO) , and Ingersoll Rand Inc (IR) .
Click here to see the complete history of Mark P Stevenson’s form 4 insider trades.
Insider Ownership Summary of Mark P Stevenson
| Ticker | Company | Transaction Date | Type of Owner |
|---|---|---|---|
| TMO | Thermo Fisher Scientific Inc | 2021-12-01 | Executive Vice President |
| IR | Ingersoll Rand Inc | 2022-07-28 | director |
Mark P Stevenson Latest Holdings Summary
Mark P Stevenson currently owns a total of 2 stocks. Among these stocks, Mark P Stevenson owns 127,752 shares of Thermo Fisher Scientific Inc (TMO) as of December 1, 2021, with a value of $61 Million and a weighting of 99.97%. Mark P Stevenson also owns 3,550 shares of aTyr Pharma Inc (ATYR) as of August 22, 2011, with a value of $19,720 and a weighting of 0.03%.
Latest Holdings of Mark P Stevenson
| Ticker | Company | Latest Transaction Date | Shares Owned | Current Price ($) | Current Value ($) |
|---|---|---|---|---|---|
| TMO | Thermo Fisher Scientific Inc | 2021-12-01 | 127,752 | 475.03 | 60,686,033 |
| ATYR | aTyr Pharma Inc | 2011-08-22 | 3,550 | 5.56 | 19,720 |
Holding Weightings of Mark P Stevenson
Mark P Stevenson Form 4 Trading Tracker
According to the SEC Form 4 filings, Mark P Stevenson has made a total of 6 transactions in Thermo Fisher Scientific Inc (TMO) over the past 5 years, including 0 buys and 6 sells. The most-recent trade in Thermo Fisher Scientific Inc is the sale of 26,925 shares on December 1, 2021, which brought Mark P Stevenson around $17 Million.
According to the SEC Form 4 filings, Mark P Stevenson has made a total of 0 transactions in aTyr Pharma Inc (ATYR) over the past 5 years. The most-recent trade in aTyr Pharma Inc is the acquisition of 357 shares on August 22, 2011, which cost Mark P Stevenson around $181,000.
Insider Trading History of Mark P Stevenson
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Mark P Stevenson Trading Performance
Mark P Stevenson Ownership Network
Ownership Network List of Mark P Stevenson
Ownership Network Relation of Mark P Stevenson
Mark P Stevenson Owned Company Details
What does Thermo Fisher Scientific Inc do?
Who are the key executives at Thermo Fisher Scientific Inc?
Mark P Stevenson is the Executive Vice President of Thermo Fisher Scientific Inc. Other key executives at Thermo Fisher Scientific Inc include Executive Vice President Gianluca Pettiti , Sr. VP and Gen. Counsel Michael A Boxer , and Senior Vice President Marc N Casper .
Thermo Fisher Scientific Inc (TMO) Insider Trades Summary
Over the past 18 months, Mark P Stevenson made no insider transaction in Thermo Fisher Scientific Inc (TMO). Other recent insider transactions involving Thermo Fisher Scientific Inc (TMO) include a net sale of 284,697 shares made by Marc N Casper , a net sale of 24,341 shares made by Michael A Boxer , and a net sale of 1,600 shares made by Gianluca Pettiti .
In summary, during the past 3 months, insiders sold 700 shares of Thermo Fisher Scientific Inc (TMO) in total and bought 0 shares, with a net sale of 700 shares. During the past 18 months, 409,522 shares of Thermo Fisher Scientific Inc (TMO) were sold and 20 shares were bought by its insiders, resulting in a net sale of 409,502 shares.
Thermo Fisher Scientific Inc (TMO)'s detailed insider trading history can be found in Insider Trading Tracker table.
Thermo Fisher Scientific Inc Insider Transactions
Mark P Stevenson Mailing Address
Above is the net worth, insider trading, and ownership report for Mark P Stevenson. Based on the public information released on the U.S. Securities and Exchange Commission (SEC) website, Mark P Stevenson's mailing address is: Foster City Ca 94404.
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