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

Insider buying vs selling

Have Biogen Inc insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Christopher ViehbacherPresident and CEO2025-12-013,404$177.78
$605.16kSell
Jane GroganHead of Research2025-10-31337$154.27
$51.99kSell
Sean GodboutChief Accounting Officer2025-10-028$155.25
$1.24kSell
Priya SinghalHead of Development2025-09-02517$133.55
$69.05kSell
Priya SinghalHead of Development2025-08-29807$132.22
$106.70kSell
Rachid IzzarHead of Global Product Strat.2025-07-082,223$135.00
$300.11kSell
Priya SinghalHead of Development2025-05-193,806$126.25
$480.51kSell
Caroline DorsaDirector2025-05-021,235$122.72
$151.56kBuy
Adam KeeneyHead of Corporate Development2025-05-01454$120.93
$54.90kSell
Stephen A. SherwinDirector2025-03-078,760$150.02
$1.31MSell

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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 Inc11.79%17,289,235$3.02BInstitution
Primecap Management Co10.19%14,954,697$2.61BInstitution
Blackrock Inc10.06%14,763,952$2.58BInstitution
State Street Corp4.99%7,319,749$1.28BInstitution
Wellington Management Group LLP2.89%4,246,504$742.42MInstitution
Geode Capital Management LLC2.77%4,068,781$711.34MInstitution
Point72 Asset Management LP2.64%3,872,901$677.10MInstitution
Invesco Ltd1.65%2,418,127$422.76MInstitution
Morgan Stanley1.53%2,251,535$393.64MInstitution
Aqr Capital Management LLC1.22%1,783,581$311.82MInstitution

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BIIB vs General Drug Manufacturer Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
BIIB88.98%2.13%Net SellingNet Selling
GRFS20.38%0.00%
OGN76.81%0.41%Net SellingNet Buying
AMRN0.96%16.09%Net SellingNet Selling
SCLX0.25%99.75%Net SellingNet Selling

Biogen Stock Ownership FAQ

Who owns Biogen?

Biogen (NASDAQ: BIIB) is owned by 88.98% institutional shareholders, 2.13% Biogen insiders, and 8.89% retail investors. Vanguard Group Inc is the largest individual Biogen shareholder, owning 17.29M shares representing 11.79% of the company. Vanguard Group Inc's Biogen shares are currently valued at $3.05B.

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