How many SEC Form 4 insider filings does BIIB have?

BIOGEN INC. (BIIB) has 11 SEC Form 4 filings (22 transaction rows) in the rolling 365-day window, disclosed by 0 distinct insiders. Most recent filing: Jun 11, 2026.

When was the most recent SEC Form 4 filing for BIIB?

The most recent Form 4 filing for BIIB on Tracefour is dated Jun 11, 2026.

BIIB

Name: BIIB Insider Trading Activity
Creator: Tracefour
License: https://www.usa.gov/government-works
Keywords: BIIB, insider trading, SEC Form 4, insider transactions

BIOGEN INC.

BIOGEN INC. (BIIB) has 11 SEC Form 4 filings (22 transaction rows) in the rolling window, disclosed by 0 distinct insiders. Most recent filing: Jun 11, 2026.

Industry:Drug Manufacturers - General
CEO:Christopher A. Viehbacher
Employees:7,605
HQ:Cambridge, MA, US
IPO:1991-09-17

No open-market insider trades for BIIB (BIOGEN INC.) in the last 365 days.

Why this page may be quiet. Tracefour displays Form 4 open-market purchases (P) and sales (S): the two transaction codes that signal directional conviction. Restricted stock grants, option exercises, gifts, and tax-withholding sales are filed but intentionally not shown: they're disclosure mechanics, not buy/sell decisions.

Many large-cap executives trade through pre-scheduled 10b5-1 plans set months in advance and batch-disclosed each quarter, so the latest filing on EDGAR for a mega-cap can be weeks old without any insider actually choosing to trade in that window.

See all Form 4 filings on SEC EDGAR ↗

Congress trading BIIB

See timeline →

RRep. Maria Elvira SalazarSale$15,001 - $50,0002026-06-02
DRep. Gilbert CisnerosPurchase$1,001 - $15,0002026-06-05
RRep. Maria Elvira SalazarPurchase$50,001 - $100,0002026-05-11
RRep. Maria Elvira SalazarPurchase$1,001 - $15,0002026-05-11
RRep. Maria Elvira SalazarPurchase$1,001 - $15,0002026-05-12

STOCK Act disclosures are filed up to 45 days after the trade. Amount is a disclosed range, not an exact figure.

Related companies

BIOGEN INC. is in the Healthcare sector.