Biogen Inc Congressional Trading
According to U.S. congressional financial disclosures filed under the STOCK Act, members of Congress have reported 207 trades in Biogen Inc (NASDAQ: BIIB) since 2012, across 37 members, worth an estimated $2.4M in disclosed volume (the midpoint of the dollar ranges members report, not exact amounts). 113 buys against 94 sells, a modestly buy-led skew, with Democratic members responsible for 55% of the trades and Republican members 45%. The most recent disclosure shown was filed July 2026, and Rohit Khanna has filed the most BIIB transactions among those shown, with 6. Other recent filers include Gilbert Cisneros, Maria Elvira Salazar, and Alan Armstrong. One notable disclosed move was a purchase by Rohit Khanna on August 26, 2025, up 61.5% since. These figures are drawn from public House and Senate periodic transaction reports and reflect what members were required to disclose, not the current market value of any position. Biogen Inc's current Quantellect Tide Score is 68 out of 100 (High Tide), Top 20% of universe (3876); the Tide Score is generated algorithmically from public filings and market data and is not investment advice. For the full record, including the month-by-month buy and sell timeline, the party breakdown, top buyers and sellers, and every individual filing, see the Biogen Inc (BIIB) stock overview and the complete trade table below.
Data updated
Price & congressional trade timeline
Party breakdown
Biogen congressional trading activity
| Politician | Published | Traded | Filed After | Type | Size | Return | Owner | |
|---|---|---|---|---|---|---|---|---|
 Gilbert Cisneros House | Jul 2, 2026 | Jun 5, 2026 | 27 days | BUY |  $1,001 - $15,000 | +13.02% | Self | |
 Maria Elvira Salazar House | Jul 7, 2026 | Jun 2, 2026 | 35 days | SELL | $15,001 - $50,000 | +16.91% | Self | |
 Rohit Khanna House | Jun 9, 2026 | May 27, 2026 | 13 days | SELL | $1,001 - $15,000 | +12.08% | Spouse | |
Rohit Khanna House | Jun 9, 2026 | May 15, 2026 | 25 days | BUY | $1,001 - $15,000 | +14.42% | Spouse | |
Maria Elvira Salazar House | Jun 8, 2026 | May 12, 2026 | 27 days | BUY | $1,001 - $15,000 | +10.74% | Self | |
Maria Elvira Salazar House | Jun 8, 2026 | May 11, 2026 | 28 days | BUY | $1,001 - $15,000 | +11.53% | Self | |
Maria Elvira Salazar House | Jun 8, 2026 | May 11, 2026 | 28 days | BUY | $50,001 - $100,000 | +11.53% | Self | |
Rohit Khanna House | May 11, 2026 | Apr 13, 2026 | 28 days | SELL | $1,001 - $15,000 | +25.17% | Spouse | |
 Alan Armstrong Senate | Jul 21, 2026 | Mar 27, 2026 | 116 days | BUY | $1,001 - $15,000 | +20.09% | Self | |
Rohit Khanna House | Mar 9, 2026 | Feb 6, 2026 | 31 days | SELL | $1,001 - $15,000 | +9.74% | Spouse |
Biogen (BIIB) congressional trading FAQ
Can members of Congress legally trade Biogen (BIIB) stock?
Yes. Members of Congress are permitted to trade individual stocks, including Biogen (BIIB), but the STOCK Act of 2012 requires them to publicly disclose each transaction within 45 days. Quantellect tracks those disclosures; it does not imply any trade was improper.
Are congressional Biogen (BIIB) trades public?
Yes. Every congressional trade in Biogen (BIIB) on this page comes from mandatory public STOCK Act disclosure filings, which are filed with a delay and may be revised.
How many times has Congress traded Biogen (BIIB)?
Members of Congress have disclosed 207 trades in Biogen (BIIB) worth $2.4M across 37 members, according to public STOCK Act filings.
Which members of Congress have traded Biogen (BIIB)?
Recent and active filers of Biogen (BIIB) disclosures include Rohit Khanna, Maria Elvira Salazar, Gilbert Cisneros. The full member-by-member trade list is on this page.
Do Democrats or Republicans trade Biogen (BIIB) more?
Across disclosed Biogen (BIIB) trades, 55% were by Democrats and 45% by Republicans, led by Democrats (55%).
What is the most recent congressional Biogen (BIIB) trade?
The most recent disclosed Biogen (BIIB) trade was a purchase by Alan Armstrong, filed Jul 20, 2026.
What is Biogen (BIIB)'s Tide Score?
Biogen (BIIB) has a Quantellect Tide Score of 68 (High Tide). The Tide Score is a 0-100 read blending price forecast, smart-money flow, technicals, and social sentiment; higher is more bullish.
Browse all stocks Congress tradesCongressional trading overviewBiogen (BIIB) stock overview
Not investment advice. Congressional trading data is sourced from public STOCK Act disclosures, which are filed with a delay and may contain errors or be revised. The Tide Score and other figures are generated algorithmically from public filings and market data and describe historical activity, not a recommendation. Always do your own research and consult a licensed financial advisor before making investment decisions.