Officer exercised or converted 4,916 BIIB derivative securities | OQRO Insider tradesWhy it stands out
Derivative exercise or conversion — not an open-market buy.
Written from the filing's own figures. OQRO describes what was reported and never tells you what to buy or sell
All the details
Dates, kept separate
- Transaction date
- Feb 6, 2026
- Reporting period
- Not applicable
- Filed with the SEC
- Feb 10, 2026
OfficerOption exercise
Context
- Classification
option exercise
Code M — exercise or conversion of a derivative security
- Planned / mechanical clue
Footnote references vesting of compensation awards
Only flagged when a footnote says so; never inferred
Source receipt
- Record ID
- 0000875045-26-000015
Added to OQROOct 2, 2026, 12:27 PM UTC Data qualityVerified: identifiers matched exactly Reporting personSusan H Alexander Officer titleEVP Chief Legal Officer SecurityRestricted Stock Unit TableDerivative (Table II) Transaction dateFeb 6, 2026 Acquired / disposedDisposed (D) Footnotes from the filing
- The restricted stock units vest in three equal yearly installments beginning on the first anniversary of the grant date of February 6, 2025.
Around the same time
Compensation award — excluded from discretionary-purchase analysis.
Compensation award — excluded from discretionary-purchase analysis.
Biogen's Head of Pharm Ops and Tech paid $585 out of pocket for Biogen shares.