Insider Trading & Ownership of Daniel J. Brennan

Location
Marlborough, MA
Summary
The estimated net worth of Daniel J. Brennan is at least $25,557,597 dollars as of 27 Feb 2026. Daniel J. Brennan is the EVP and CFO of BOSTON SCIENTIFIC CORP and owns shares of BOSTON SCIENTIFIC CORP (BSX) stock worth about $24.73M. Daniel J. Brennan is the Director of WATERS CORP /DE/ and owns shares of WATERS CORP /DE/ (WAT) stock worth about $535.2K. Daniel J. Brennan is the Director of MADRIGAL PHARMACEUTICALS, INC. and owns shares of MADRIGAL PHARMACEUTICALS, INC. (MDGL) stock worth about $292.7K.
Signature
/s/ Michael Lynn, attorney-in-fact for Daniel Brennan
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Quick Takeaways

  • Daniel J. Brennan has 4 issuer positions tracked on this page.
  • Estimated disclosed ownership value: $25,557,597.
  • Recent insider filing activity is available below.

What Changed

  • Largest disclosed position: BOSTON SCIENTIFIC CORP ($24,729,761).
  • Past-year value change for that position: .

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 Daniel J. Brennan

Symbol Company Relationship Holdings Value Past Year Net Change Change % Report Period
BSX BOSTON SCIENTIFIC CORP EVP and CFO $24,729,761 18 Feb 2025
WAT WATERS CORP /DE/ Director $535,184 25 Feb 2026
MDGL MADRIGAL PHARMACEUTICALS, INC. Director $292,652 01 Aug 2025
NUAN Nuance Communications, Inc. Director 04 Mar 2022

Insider Transactions Reported by Daniel J. Brennan:

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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