Biogen Inc. (BIIB)
NasdaqGS • Currently up 2.65 (+1.21%) in today's trading session
6 members of Congress have disclosed 25 trades in Biogen Inc. (BIIB) via STOCK Act filings. The most recent disclosure was a purchase by Gilbert Cisneros on 5 June 2026. The most active traders have been Gilbert Cisneros (7), Josh Gottheimer (7), and Maria Elvira Salazar (4). Aggregate disclosed activity totals roughly $179K in purchases and $161.5K in sales (midpoint estimates from bracketed disclosure amounts).
Biogen Inc. is currently trading at $220.77, positioned at 98% of its 52-week range ($131.52 – $222.85).
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Biogen Inc. Price History and Technical Analysis
Congressional Trading Activity for BIIB
| Gilbert Cisneros | 5 Jun 2026 | 2 Jul 2026 | Purchase | Stock | $1,001 - $15,000 | +12.38% | |
| Maria Elvira Salazar | 2 Jun 2026 | 7 Jul 2026 | Sale | Stock | $15,001 - $50,000 | N/A | |
| Maria Elvira Salazar | 12 May 2026 | 8 Jun 2026 | Purchase | Stock | $1,001 - $15,000 | +11.53% | |
| Maria Elvira Salazar | 11 May 2026 | 8 Jun 2026 | Purchase | Stock | $50,001 - $100,000 | +11.53% | |
| Maria Elvira Salazar | 11 May 2026 | 8 Jun 2026 | Purchase | Stock | $1,001 - $15,000 | +11.53% | |
| Gilbert Cisneros | 30 Jan 2026 | 13 Feb 2026 | Purchase | Stock | $1,001 - $15,000 | +25.31% | |
| Robert P. Bresnahan | 15 May 2025 | 9 Jun 2025 | Purchase | Stock | $1,001 - $15,000 | N/A | |
| Robert P. Bresnahan | 8 Apr 2025 | 8 May 2025 | Sale | Stock | $1,001 - $15,000 | N/A | |
| Robert P. Bresnahan | 25 Feb 2025 | 27 Mar 2025 | Purchase | Stock | $1,001 - $15,000 | N/A | |
| Shri Thanedar | 23 Jan 2023 | 9 Feb 2023 | Sale | Stock | $15,001 - $50,000 | N/A | |
| Kathy Manning | 3 Aug 2022 | 14 Sept 2022 | Sale | Stock | $1,001 - $15,000 | N/A | |
| Kathy Manning | 14 Jan 2022 | 11 Feb 2022 | Sale | Stock | $1,001 - $15,000 | N/A | |
| Josh Gottheimer | 18 Oct 2021 | 15 Nov 2021 | Purchase | Stock | $1,001 - $15,000 | N/A | |
| Josh Gottheimer | 15 Sept 2021 | 13 Oct 2021 | Sale | Stock | $1,001 - $15,000 | N/A | |
| Gilbert Cisneros | 22 Dec 2020 | 11 Jan 2021 | Sale | Stock | $1,001 - $15,000 | N/A | |
| Gilbert Cisneros | 16 Sept 2020 | 14 Oct 2020 | Purchase | Stock | $1,001 - $15,000 | N/A | |
| Josh Gottheimer | 7 Jul 2020 | 10 Aug 2020 | Purchase | Stock | $1,001 - $15,000 | N/A | |
| Gilbert Cisneros | 29 Apr 2020 | 13 May 2020 | Purchase | Stock | $1,001 - $15,000 | N/A | |
| Gilbert Cisneros | 7 Feb 2020 | 10 Mar 2020 | Purchase | Stock | $1,001 - $15,000 | N/A | |
| Gilbert Cisneros | 9 May 2019 | 18 Jun 2019 | Sale | Stock | $1,001 - $15,000 | N/A | |
| Josh Gottheimer | 29 Oct 2018 | 16 Nov 2018 | Sale | Stock | $1,001 - $15,000 | N/A |
Select transactions to view their annotations on the chart
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Frequently Asked Questions about BIIB
- Which members of Congress have traded BIIB?
- 6 members of Congress have disclosed 25 trades in Biogen Inc. (BIIB) under the STOCK Act. The most active traders are Gilbert Cisneros, Josh Gottheimer, and Maria Elvira Salazar.
- When was BIIB most recently disclosed by Congress?
- The most recent BIIB disclosure was a purchase by Gilbert Cisneros on 5 June 2026.
- What is the total disclosed congressional trading volume for BIIB?
- Members of Congress have disclosed approximately $179K in BIIB purchases and $161.5K in sales. These figures are midpoint estimates derived from the bracketed amount ranges used in STOCK Act filings.
- How can I track new congressional trades in BIIB?
- This BIIB page updates as soon as new STOCK Act disclosures are filed for Biogen Inc.. Every trade, politician, transaction date and amount range is surfaced above, typically within hours of the official filing appearing on the House or Senate disclosure portals.
Track BIIB in Congress
See when politicians buy or sell this stock