Alnylam Pharmaceuticals Inc

ALNYNASDAQ
$258.00
-2.10-0.81%
In chiusura: Sep 8, 5:00 PM EST
$256.95
-3.15-1.21%
Pre-mercato: 4:30 AM EST

Alnylam Pharmaceuticals Ownership & Insider Activity

Alnylam Pharmaceuticals (ALNY) institutional and insider ownership, recent insider transactions and ownership breakdown.

Insiders own 0.5% of shares outstanding. Institutional investors hold 94.0%.

Shares Outstanding

133.809M

Shares Float

100.437M

Insider Shares Owned

675.825K

Insider % Owned

0.5%

Institutional Shares Held

125.830M

Institutional % Held

94.0%

Ownership Breakdown

Net Insider Activity by Month

Alnylam Pharmaceuticals Insider Transactions (Last 6 Months)

DateInsiderTitleTypeSharesPriceValue
Jun 1, 2026David E.I. PyottDIRECTORSELL-OPTIONS$299.18$1.1M
Apr 2, 2026Melissa McLaughlinCHIEF HUMAN RESOURCES OFFICERSELL3.910K$325.92$1.3M

Congressional Trading Activity

DateMemberPartyChamberActionAmount
Aug 11, 2026Cory A. BookerDSenateS$1,001 - $15,000
May 12, 2025Jefferson ShreveRHouseS$15,001 - $50,000