Insider Trading & Ownership of Michael Thomas Henderson

Location
Palo Alto, CA
Summary
The estimated net worth of Michael Thomas Henderson is at least $102,292,487 dollars as of 08 May 2026. Michael Thomas Henderson is the Chief Executive Officer, Director of Apogee Therapeutics, Inc. and owns shares of Apogee Therapeutics, Inc. (APGE) stock worth about $95.62M. Michael Thomas Henderson is the Director of Spyre Therapeutics, Inc. and owns shares of Spyre Therapeutics, Inc. (SYRE) stock worth about $6.68M.
Signature
/s/ Heidy King-Jones, as Attorney-in-Fact
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Quick Takeaways

  • Michael Thomas Henderson has 3 issuer positions tracked on this page.
  • Estimated disclosed ownership value: $102,292,487.
  • Recent insider filing activity is available below.

What Changed

  • Largest disclosed position: Apogee Therapeutics, Inc. ($95,616,025).
  • Past-year value change for that position: -$11,804,673.

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 Michael Thomas Henderson

Symbol Company Relationship Holdings Value Past Year Net Change Change % Report Period
APGE Apogee Therapeutics, Inc. Chief Executive Officer, Director $95,616,025 -$11,804,673 -11% 16 Apr 2026
SYRE Spyre Therapeutics, Inc. Director $6,676,462 -$5,952,050 -47% 08 May 2026
ARYD ARYA Sciences Acquisition Corp IV Director 31 Jul 2024

Insider Transactions Reported by Michael Thomas Henderson:

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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