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BIOGEN INC.·4

Feb 10, 5:05 PM ET

Singhal Priya 4

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Biogen (BIIB) Head of Development Priya Singhal Sells Shares After RSU Conversion

What Happened
Priya Singhal, Head of Development at Biogen (BIIB), had restricted/derivative awards convert into common shares on Feb 6, 2026 (totaling 6,900 shares from two conversions: 2,217 and 4,683). Of those converted shares, 2,468 shares (1,056 + 1,412) were surrendered to cover tax liabilities (payment value reported at $201.18 per share, totaling $496,512). On Feb 9, 2026 she sold 2,660 shares in an open-market transaction at $199.83 per share for $531,548. After the conversions, withholding and the sale, roughly 1,772 shares from this conversion event remain (6,900 converted − 2,468 withheld − 2,660 sold = 1,772), though the filing does not state total company shares she owns post-transaction.

Key Details

  • Transaction dates and prices:
    • Feb 6, 2026: Conversion/exercise of derivatives/RSUs — 2,217 and 4,683 shares (acquired via conversion; $0 exercise price reported).
    • Feb 6, 2026: Tax withholding — 1,056 shares and 1,412 shares withheld at $201.18 (total ~$496,512).
    • Feb 9, 2026: Open-market sale — 2,660 shares at $199.83, proceeds $531,548.
  • Nature of transactions: M = exercise/conversion of derivative (RSU conversion), F = shares surrendered to pay tax liability, S = open-market sale.
  • Footnotes:
    • F1: One grant vests in three equal annual installments beginning 02/07/2024.
    • F2: Another grant vests in three equal annual installments beginning 02/06/2025.
  • Shares owned after transaction: The filing does not state total holdings; approximately 1,772 shares from this conversion event remain un-surrendered/un-sold.
  • Filing timeliness: Report filed 2026-02-10 covering transactions on 2026-02-06; the filing does not indicate a late report.

Context
These entries reflect RSU/derivative conversions and routine tax withholding rather than an out-of-pocket purchase. The sequence — conversion, withholding of shares for taxes, then an open-market sale — is common when equity awards vest (a form of cashless settlement). Such sales are often administrative (to cover taxes or diversify) and are not, by themselves, a clear signal of a change in insider sentiment.