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Insider Trading

Michael D Shafer Net Worth

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Last Updated: 5 days, 23 hours ago

Michael D Shafer has an estimated net worth of at least $17.6 million*, as of March 11, 2026. They own 20,949 shares of TMO stock. They have sold 12,332 shares of TMO stock since 2021, for an estimated $6.4 million.

Michael D Shafer $TMO SEC Form 4 Insider Trading

Michael D Shafer has filed a total of 3 insider trades in $TMO since 2021. Their most recent trade was a sale of 1,607 shares, made on Mar 11, 2026. Their largest trade was a sale of 8,475 shares, made on Nov 25, 2025. We estimate that they now own 20,949 shares of $TMO, worth an estimated $11.1 million.



Insider Trading at $TMO

There have been a total of 782 insider trades reported at $TMO since 2021, with 24 shares purchased and 1.2 million shares sold. The most active insider traders in $TMO stock have been Marc N Casper, Mark Stevenson, and Stephen Williamson. The most recent trade was a sale of 1,607 shares reported by Michael D Shafer (Executive Vice President), made on Mar 11, 2026.



History of Insider Stock Trades by Michael D Shafer

Company Ticker Purchase / Sale Shares Date Disclosed (EST)
TMO logo TMO Sale 1,607 Mar 11, 2026 March 12, 2026, 4:23 p.m.
TMO logo TMO Sale 8,475 Nov 25, 2025 Nov. 26, 2025, 6:24 p.m.
TMO logo TMO Sale 2,250 Nov 25, 2025 Nov. 26, 2025, 6:24 p.m.




$TMO Executives and Stock Owners with Insider Trades



*This is only based off of information found in SEC filings, and may not reflect actual net worth. There may also be inaccuracies due to privately holdings filing errors, parsing errors, accidental double-counting of shares, incorrect classification of indirectly owned shares, sales prior to dataset start date, or any other number of issues.