Insider Trading & Ownership of David S. Grayzel

Location
Cambridge, MA
Summary
The estimated net worth of David S. Grayzel is at least $50,898,004 dollars as of 30 Jan 2026. David S. Grayzel is the Director of Aerovate Therapeutics, Inc. and owns shares of Jade Biosciences, Inc. (JBIO) stock worth about $50.85M. David S. Grayzel is the Director of Q32 Bio Inc. and owns shares of Q32 Bio Inc. (QTTB) stock worth about $45K.
Signature
/s/ Eric Bell, Attorney-in-Fact
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Quick Takeaways

  • David S. Grayzel has 3 issuer positions tracked on this page.
  • Estimated disclosed ownership value: $50,898,004.
  • Recent insider filing activity is available below.

What Changed

  • Largest disclosed position: Aerovate Therapeutics, Inc. ($50,853,006).
  • 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 David S. Grayzel

QTTB Forms 3/4/5

Q32 Bio Inc.

Relationship
Director
Holdings value
$44,998
Past year net change
Change %
Report period
15 Jan 2026

Insider Transactions Reported by David S. Grayzel:

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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