Who in Congress trades BIIB?
Biogen Inc.
6 members of Congress have disclosed 20 BIIB transactions between March 27, 2014 – June 5, 2026. Under the STOCK Act these must be filed within 45 days of the trade.
Price and trade timing
When members traded BIIB, against its weekly closing price.
Markers sit on the date the trade happened; it was disclosed up to 45 days later. Prices are weekly closes adjusted for splits and dividends. Shown as context for the public record — we do not calculate returns or performance for any member, and none of this is investment advice.
Who trades it most
BIIB trades by year
Every disclosed BIIB trade
Newest first, through July 24, 2026. Each row links to the original filing. 1 of these were filed after the 45-day deadline.
| Member | Type | Amount | Traded | Filing |
|---|---|---|---|---|
| Alan ArmstrongR | BuyLate | $1,001 - $15,000 | March 27, 2026 | View |
| Maria Elvira SalazarR | Sell | $15,001 - $50,000 | June 2, 2026 | View |
| Gilbert CisnerosD | Buy | $1,001 - $15,000 | June 5, 2026 | View |
| Maria Elvira SalazarR | Buy | $1,001 - $15,000 | May 12, 2026 | View |
| Maria Elvira SalazarR | Buy | $50,001 - $100,000 | May 11, 2026 | View |
| Maria Elvira SalazarR | Buy | $1,001 - $15,000 | May 11, 2026 | View |
| Sheldon WhitehouseD | Sell | $1,001 - $15,000 | March 22, 2019 | View |
| Sheldon WhitehouseD | Sell | $1,001 - $15,000 | January 8, 2018 | View |
| Sheldon WhitehouseD | Sell | $1,001 - $15,000 | December 23, 2016 | View |
| Sheldon WhitehouseD | Sell | $15,001 - $50,000 | December 13, 2016 | View |
| James M. InhofeR | Sell | $50,001 - $100,000 | July 21, 2016 | View |
| Sheldon WhitehouseD | Buy | $1,001 - $15,000 | August 28, 2015 | View |
| Sheldon WhitehouseD | Buy | $1,001 - $15,000 | August 10, 2015 | View |
| Sheldon WhitehouseD | Buy | $1,001 - $15,000 | August 4, 2015 | View |
| Sheldon WhitehouseD | Buy | $1,001 - $15,000 | July 10, 2015 | View |
| James M. InhofeR | Buy | $15,001 - $50,000 | July 9, 2015 | View |
| Sheldon WhitehouseD | Buy | $15,001 - $50,000 | May 7, 2015 | View |
| Sheldon WhitehouseD | Buy | $1,001 - $15,000 | April 7, 2015 | View |
| Susan M. CollinsR | Sell | $1,001 - $15,000 | July 23, 2014 | View |
| Susan M. CollinsR | Sell | $1,001 - $15,000 | March 27, 2014 | View |
Public STOCK Act disclosures (U.S. Senate eFD and House Clerk), shown for transparency and education — not investment advice, and not a statement of what any member currently owns. Back to the full Congress trades tracker.