Alnylam Pharmaceuticals Officer Bryan Supran Files Form 144 to Sell Shares for Tax Withholding
ALNYLAM PHARMACEUTICALS, INC.
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Filing Summary
📋 Form 144 Notice of Proposed Sale
Company: ALNYLAM PHARMACEUTICALS, INC. ($ALNY) Insider: SUPRAN BRYAN (Officer) Proposed Sale Date: 2026-10-02 Shares to Sell: 1,758 Common Shares Estimated Value: $398,862.25 (~$226.88/share) Broker: Fidelity Brokerage Services LLC Notes: Sale covers tax obligations related to restricted stock vesting.
Comprehensive Analysis
Alnylam Pharmaceuticals, Inc. (ALNY) – Form 144 Filing Overview
- Filer: Bryan Supran, Officer
- Filing Date: October 2, 2026
- Proposed Sale Date: October 2, 2026
- Broker: Fidelity Brokerage Services LLC
Transaction Details
- Securities: 1,758 shares of Common Stock
- Aggregate Market Value: $398,862.25 (approx. $226.88 per share)
- Shares Outstanding: 133,809,118
- Acquisition Source: Acquired on October 1, 2026, via restricted stock vesting as compensation.
- Remarks: The sale includes an amount necessary to cover tax withholding obligations resulting from the settlement of the vested equity award.
Significance Assessment
- Significance Level: Low
- Context: The transaction is routine and relatively small (representing approximately 0.0013% of outstanding shares). It is explicitly tied to covering tax withholding requirements following the vesting of an equity compensation grant.
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Important Disclaimer
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