Insider Trading & Ownership of John Maraganore

Location
Cambridge, MA
Summary
The estimated net worth of John Maraganore is at least $43,952,443 dollars as of 30 Apr 2026. John Maraganore is the Chief Executive Officer, Director of ALNYLAM PHARMACEUTICALS, INC. and owns shares of ALNYLAM PHARMACEUTICALS, INC. (ALNY) stock worth about $42.77M. John Maraganore is the Director of AGIOS PHARMACEUTICALS, INC. and owns shares of AGIOS PHARMACEUTICALS, INC. (AGIO) stock worth about $617.3K. John Maraganore is the Director of Beam Therapeutics Inc. and owns shares of Beam Therapeutics Inc. (BEAM) stock worth about $564K.
Signature
/s/ Mads Nikolaj Behrndt-Eriksen, as Attorney-in-Fact
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Key facts

  • John Maraganore has 8 issuer positions tracked on this page.
  • Estimated disclosed ownership value: $43,952,443.
  • Recent insider filing activity is available below.

Change

  • Largest disclosed position: ALNYLAM PHARMACEUTICALS, INC. ($42,771,115).
  • Past-year value change for that position: .

Research use

  • 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.

Evidence

Filed on Form 4

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

See Original Filing

Ownership of John Maraganore

PROK Forms 3/4/5

PROKIDNEY CORP.

Relationship
Director
Holdings value
Past year net change
Change %
Report period
29 Jun 2023

Insider Transactions Reported by John Maraganore:

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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