SEC Form 4 · accession 0000875045-26-000082
BIOGEN INC. · BIIB
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Michael Parini
Officer — Chief Legal Officer
Period of report
Sep 1, 2026
Accepted (ET)
Sep 3, 2026 · 4:14 pm EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0000875045
Table I — non-derivative securities
No Table I lines on this filing.
Table II — derivative securities
| Security | Conv. / exercise price | Date | Code | Shares | A/D | Exercisable | Expires | Underlying | Underlying shares | Owned after | D/I |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Restricted Stock UnitF1 | $0.00 | Sep 1, 2026 | A | 7,405 | A | — | Sep 1, 2029 | Common Stock | 7,405 | 7,405 | D |
Explanation of responses
- F1The restricted stock units vest in three equal yearly installments beginning on the first anniversary of the grant date of September 1, 2026.