Form4insider filings, from the source

Company · CIK 0000875045 · SIC 2836 — Biological Products, (No Diagnostic Substances) · Nasdaq

BIOGEN INC. · BIIB

Insider activity reported against this company. All insider holders · Files at: BIVV. On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market activity at this companybuys $0 · 0sales $240k · 1net −$240k
$10k$10k$100k$100k$1M$1MbuyssalesSep 2024Jan 2025May 2025Sep 2025Jan 2026May 2026Sep 2026

Reported at this company — common stock

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Aug 3, 2026 SForm 4 →Aug 5, 4:03 pm EDTLloyd MinorDirector1,186$202.15$239,7502,689−30.6%10b5-1
Jun 9, 2026 AForm 4 →Jun 11, 5:50 pm EDTWilliam A HawkinsDirector1,505——10,365—
Jun 9, 2026 AForm 4 →Jun 11, 5:47 pm EDTStephen A SherwinDirector1,505——15,193—
Jun 9, 2026 AForm 4 →Jun 11, 5:46 pm EDTEric K RowinskyDirector1,505——25,844—
Jun 9, 2026 AForm 4 →Jun 11, 5:44 pm EDTJesus B MantasDirector1,505——11,263—
Jun 9, 2026 AForm 4 →Jun 11, 5:34 pm EDTSusan LangerDirector1,505——6,634—
Jun 9, 2026 AForm 4 →Jun 11, 5:32 pm EDTMonish D PatolawalaDirector1,505——5,215—
Jun 9, 2026 AMForm 4 →Jun 11, 5:21 pm EDTMenelas N PangalosDirector3,875——3,875—
Jun 9, 2026 AForm 4 →Jun 11, 5:17 pm EDTLloyd MinorDirector1,505——3,875—
Jun 9, 2026 AForm 4 →Jun 11, 5:09 pm EDTMaria C FreireDirector2,005——8,820—

Reported at this company — derivatives (options, RSUs, warrants)

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Sep 1, 2026 AForm 4 →Sep 3, 4:14 pm EDTMichael PariniChief Legal Officer7,405——7,405—
Jun 9, 2026 MForm 4 →Jun 11, 5:21 pm EDTMenelas N PangalosDirector2,370——0—

Filed by this entity as an insider elsewhere — common stock

No reported common-stock activity in this period.

Filed by this entity as an insider elsewhere — derivatives (options, RSUs, warrants)

No reported derivative activity in this period.