NASDAQ: BIIB
Biogen Inc Stock Ownership - Who owns Biogen?

Insider buying vs selling

Have Biogen Inc insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Sean GodboutChief Accounting Officer2026-04-0154$183.78
$9.92kSell
Nicole MurphyHead of Pharm Ops and Tech2026-02-123$195.04
$585.11Buy
Priya SinghalHead of Development2026-02-092,660$199.83
$531.55kSell
Sean GodboutChief Accounting Officer2026-02-0676$201.18
$15.29kSell
Sean GodboutChief Accounting Officer2026-02-06103$201.18
$20.72kSell
Sean GodboutChief Accounting Officer2026-02-06180$201.18
$36.21kSell
Ginger GregoryEVP Human Resources2026-02-06791$201.18
$159.13kSell
Ginger GregoryEVP Human Resources2026-02-06666$201.18
$133.99kSell
Ginger GregoryEVP Human Resources2026-02-061,132$201.18
$227.74kSell
Jane GroganHead of Research2026-02-06407$201.18
$81.88kSell

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Net Insider Buy/Sell (L12M) Ownership

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BIIB Shareholders

What type of owners hold Biogen Inc stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Vanguard Group Inc11.82%17,447,092$3.39BInstitution
Blackrock Inc10.03%14,811,370$2.88BInstitution
Primecap Management Co10.00%14,757,997$2.87BInstitution
Fmr LLC6.38%9,425,863$1.83BInstitution
State Street Corp4.85%7,159,020$1.39BInstitution
Geode Capital Management LLC2.84%4,199,399$816.28MInstitution
Wellington Management Group LLP2.41%3,551,269$690.30MInstitution
Point72 Asset Management LP1.91%2,813,192$546.83MInstitution
Norges Bank1.79%2,638,834$512.94MInstitution
Morgan Stanley1.57%2,325,013$451.94MInstitution

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BIIB vs General Drug Manufacturer Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
BIIB94.64%2.15%Net SellingNet Selling
GRFS20.87%0.00%
OGN76.03%0.53%Net SellingNet Selling
AMRN1.08%15.96%Net SellingNet Selling
SCLX0.37%99.63%Net Selling

Biogen Stock Ownership FAQ

Who owns Biogen?

Biogen (NASDAQ: BIIB) is owned by 94.64% institutional shareholders, 2.15% Biogen insiders, and 3.21% retail investors. Vanguard Group Inc is the largest individual Biogen shareholder, owning 17.45M shares representing 11.82% of the company. Vanguard Group Inc's Biogen shares are currently valued at $3.30B.

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