Michael F Mahoney - Net Worth and Insider Trading

Michael F Mahoney Net Worth

The estimated net worth of Michael F Mahoney is at least $82 Million dollars as of 2026-08-22. Michael F Mahoney is the Chairman, President & CEO of Boston Scientific Corp and owns about 1,612,143 shares of Boston Scientific Corp (BSX) stock worth over $81 Million. Michael F Mahoney is also the Director of CVS Health Corp and owns about 6,411 shares of CVS Health Corp (CVS) stock worth over $596,351. Details can be seen in Michael F Mahoney'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 F Mahoney has not made any transactions after 2026-08-03 and currently still holds the listed stock(s). Please note that this estimate may not reflect the actual net worth.

Transaction Summary of Michael F Mahoney

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Michael F Mahoney Insider Ownership Reports

Based on ownership reports from SEC filings, as the reporting owner, Michael F Mahoney owns 3 companies in total, including Baxter International Inc (BAX) , Boston Scientific Corp (BSX) , and CVS Health Corp (CVS) .

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

Insider Ownership Summary of Michael F Mahoney

Ticker Company Transaction Date Type of Owner
BAX Baxter International Inc 2022-05-03 director
BSX Boston Scientific Corp 2026-08-03 President
CVS CVS Health Corp 2025-02-18 director

Michael F Mahoney Latest Holdings Summary

Michael F Mahoney currently owns a total of 2 stocks. Among these stocks, Michael F Mahoney owns 1,612,143 shares of Boston Scientific Corp (BSX) as of August 3, 2026, with a value of $81 Million and a weighting of 99.27%. Michael F Mahoney also owns 6,411 shares of CVS Health Corp (CVS) as of February 18, 2025, with a value of $596,351 and a weighting of 0.73%.

Latest Holdings of Michael F Mahoney

Ticker Company Latest Transaction Date Shares Owned Current Price ($) Current Value ($)
BSX Boston Scientific Corp 2026-08-03 1,612,143 50.37 81,203,643
CVS CVS Health Corp 2025-02-18 6,411 93.02 596,351

Holding Weightings of Michael F Mahoney


Michael F Mahoney Form 4 Trading Tracker

According to the SEC Form 4 filings, Michael F Mahoney has made a total of 17 transactions in Boston Scientific Corp (BSX) over the past 5 years, including 1 buys and 16 sells. The most-recent trade in Boston Scientific Corp is the acquisition of 186,240 shares on August 3, 2026, which cost Michael F Mahoney around $9 Million.

According to the SEC Form 4 filings, Michael F Mahoney has made a total of 2 transactions in CVS Health Corp (CVS) over the past 5 years, including 2 buys and 0 sells. The most-recent trade in CVS Health Corp is the acquisition of 30,000 shares on February 18, 2025, which cost Michael F Mahoney around $2 Million.

Insider Trading History of Michael F Mahoney

* 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.

Michael F Mahoney Trading Performance

GuruFocus tracks the stock performance after each of Michael F Mahoney's buying transactions within different timeframes. To be detailed, the average return of stocks after 3 months bought by Michael F Mahoney is 8.41%. GuruFocus also compares Michael F Mahoney's trading performance to market benchmark return within the same time period. The performance of stocks bought by Michael F Mahoney within 3 months outperforms 2 times out of 4 transactions in total compared to the return of S&P 500 within the same period.

You can select different timeframes to see how Michael F Mahoney's insider trading performs compared to the benchmark.

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

Performance of Michael F Mahoney

Average Return

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Average return per transaction

Outperforming Transactions

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4 out of 4 outperforming transactions.
Each transaction is measured over a period and compared to .
1 Month 3 Months 6 Months 1 Year 2 Years 3 Years
Return(%) 4.48 LIMIT LIMIT LIMIT LIMIT LIMIT
Relative Return to S&P 500(%) 4.77 LIMIT LIMIT LIMIT LIMIT LIMIT

Get the full picture on these stocks
See GF Score, valuation, financials, and warning signs for every stock Michael F Mahoney owns.
View BSX Analysis

Michael F Mahoney Ownership Network

Ownership Network List of Michael F Mahoney

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Ownership Network Relation of Michael F Mahoney

Insider Network Chart


Michael F Mahoney Owned Company Details

What does Baxter International Inc do?

Who are the key executives at Baxter International Inc?

Michael F Mahoney is the director of Baxter International Inc. Other key executives at Baxter International Inc include President & CCS James Teaff , President & Front Line Care Julie Foster , and President & Adv. Surgery Steven P. Wallace .

Baxter International Inc (BAX) Insider Trades Summary

In summary, during the past 3 months, insiders sold 0 shares of Baxter International Inc (BAX) in total and bought 0 shares, with a net sale of 0 shares. During the past 18 months, 0 shares of Baxter International Inc (BAX) were sold and 0 shares were bought by its insiders, resulting in a net sale of 0 shares.

Baxter International Inc (BAX)'s detailed insider trading history can be found in Insider Trading Tracker table.

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Baxter International Inc Insider Transactions

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Michael F Mahoney Mailing Address

Above is the net worth, insider trading, and ownership report for Michael F Mahoney. Based on the public information released on the U.S. Securities and Exchange Commission (SEC) website, Michael F Mahoney's mailing address is: Marlborough Ma 01752-1234.