Insider Trading & Ownership of Marc N. Casper

Location
Waltham, MA
Summary
The estimated net worth of Marc N. Casper is at least $84,810,724 dollars as of 09 Mar 2026. Marc N. Casper is the Chairman & CEO, Director of THERMO FISHER SCIENTIFIC INC. and owns shares of THERMO FISHER SCIENTIFIC INC. (TMO) stock worth about $83.54M. Marc N. Casper is the Director of SYNOPSYS INC and owns shares of SYNOPSYS INC (SNPS) stock worth about $1.27M.
Signature
/s/ Melodie T. Morin, Attorney-in-Fact for Marc N. Casper
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Quick Takeaways

  • Marc N. Casper has 2 issuer positions tracked on this page.
  • Estimated disclosed ownership value: $84,810,724.
  • Recent insider filing activity is available below.

What Changed

  • Largest disclosed position: THERMO FISHER SCIENTIFIC INC. ($83,541,326).
  • Past-year value change for that position: -$34,662,470.

Why This Matters

  • This page translates Forms 3/4/5 into a quick ownership context before you inspect each transaction row.
  • You can cross-check role, issuer, and filing chronology directly against the SEC source.

Source Evidence

Filed on Form 4

Insider ownership context is sourced from SEC Forms 3, 4, and 5.

See Original Filing

Ownership of Marc N. Casper

Symbol Company Relationship Holdings Value Past Year Net Change Change % Report Period
TMO THERMO FISHER SCIENTIFIC INC. Chairman & CEO, Director $83,541,326 -$34,662,470 -29% 05 Mar 2026
SNPS SYNOPSYS INC Director $1,269,398 10 Apr 2024

Insider Transactions Reported by Marc N. Casper:

Sym Company Class Transaction % Value $ * Price $ Shares Shares After Date Ownership
* An asterisk sign (*) next to the price indicates that the price is likely invalid.
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