SEC Form 4 · accession 0000875045-26-000055
BIOGEN INC. · BIIB
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Menelas N Pangalos
Director
Period of report
Jun 9, 2026
Accepted (ET)
Jun 11, 2026 · 5:21 pm EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0000875045
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Common Stock | Jun 9, 2026 | M | 2,370 | $0.00 | A | 2,370 | D | |
| Common StockF1 | Jun 9, 2026 | A | 1,505 | $0.00 | A | 3,875 | D |
Table II — derivative securities
| Security | Conv. / exercise price | Date | Code | Shares | A/D | Exercisable | Expires | Underlying | Underlying shares | Owned after | D/I |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Restricted Stock UnitF2 | $0.00 | Jun 9, 2026 | M | 2,370 | D | — | Jun 17, 2026 | Common Stock | 2,370 | 0 | D |
Explanation of responses
- F1The restricted stock units vest on the earlier of (i) the next annual meeting or (ii) the anniversary of the date of grant of June 9, 2026.
- F2The restricted stock units vest on the earlier of (i) the next annual meeting or (ii) the anniversary of the date of grant of June 17, 2025.