Biogen (BIIB) — Congressional trading
Health Care
Biogen (BIIB) has 9 reported Congressional stock trading disclosures in our data, including 7 purchases and 2 sales among the most recent 9 (latest 2026-06-05).
Reported STOCK-Act stock transactions
| Trade date | Member | Type | Amount range | Filed | Source |
|---|---|---|---|---|---|
| 2026-06-05 | Hon. Gilbert Cisneros | Purchase | $1,001 – $15,000 | 2026-07-02 | PTR |
| 2026-06-02 | Hon. Maria Elvira Salazar | Sale | $15,001 – $50,000 | 2026-07-07 | PTR |
| 2026-05-12 | Hon. Maria Elvira Salazar | Purchase | $1,001 – $15,000 | 2026-06-08 | PTR |
| 2026-05-11 | Hon. Maria Elvira Salazar | Purchase | $50,001 – $100,000 | 2026-06-08 | PTR |
| 2026-05-11 | Hon. Maria Elvira Salazar | Purchase | $1,001 – $15,000 | 2026-06-08 | PTR |
| 2026-01-30 | Hon. Gilbert Cisneros | Purchase | $1,001 – $15,000 | 2026-02-13 | PTR |
| 2025-05-15 | Hon. Rob Bresnahan | Purchase | $1,001 – $15,000 | 2025-06-09 | PTR |
| 2025-04-08 | Hon. Rob Bresnahan | Sale | $1,001 – $15,000 | 2025-05-08 | PTR |
| 2025-02-25 | Hon. Rob Bresnahan | Purchase | $1,001 – $15,000 | 2025-03-27 | PTR |
Ask the chat about Congressional trading in BIIB →
Source: U.S. House Clerk Periodic Transaction Reports (PTRs) filed under the STOCK Act. Disclosure can lag the actual trade by up to 45 days, so these are not real-time. Amounts are broad ranges as legally required — not exact figures. A transaction may belong to the member, their spouse, or a dependent child (see the owner column); a spouse or dependent trade is not the member's personal trade. This information is reused from the official public disclosure record for informational and public-interest (news) purposes only. Informational only — NOT financial advice, and NOT a signal to buy or sell.
See the full company profile: Biogen (BIIB).
Last updated 2026-06-05 (most recent disclosed transaction date).
Informational only — NOT financial advice. Congressional disclosures are sourced from the U.S. House Clerk public financial-disclosure archive and shown with their reported dates.