# BIIB: Biogen Inc. Common Stock

- Industry: Biological Products, (No Diagnostic Substances)
- Current price: $215.5
- Price updated: Sep 19, 2026
- Total congressional trades: 11
- Politicians trading: 6
- Last traded: Aug 18, 2026
- Source: https://tryglasshouse.ai/companies/BIIB.md

Biogen is an established biopharmaceutical company focused on treatments for neurodegenerative and rare diseases. Its declining multiple sclerosis franchise is its largest revenue generator and contributed 40% of total revenue in 2025. Biogen also generates significant revenue from its CD20 collaboration agreements with Roche (19% of total in 2025), which includes oncology drugs Rituxan and Gazyva and multiple sclerosis drug Ocrevus. Biogen's newer franchises include Spinraza (spinal muscular atrophy, with partner Ionis), Leqembi (Alzheimer's disease, collabroation revenue from its partner Eisai), Skyclarys (Friedreich's ataxia, Reata), Zurzuvae (postpartum depression, Sage), and Qalsody (amyotrophic lateral sclerosis, Ionis).

# Congressional trading history

- Page: 1 of 1
- Results: 11 of 11
- Pagination query parameter: `page`

## 1. Kevin Hern

- Member: Republican, House
- Transaction: Sell, $1,001 - $15,000
- Dates: traded Aug 18, 2026, disclosed Sep 1, 2026
- Market context: $212.55 at trade, $215.5 current (+1.39%)
- Politician: https://tryglasshouse.ai/politicians/H001082.md
- Record: https://tryglasshouse.ai/trades/39f34e7e-15a3-42c5-8c24-aa89ebabd642.md

## 2. Alan Armstrong

- Member: Republican, Senate
- Transaction: Buy, $1,001 - $15,000
- Dates: traded Mar 27, 2026, disclosed Jul 21, 2026
- Market context: $183.84 at trade, $215.5 current (+17.22%)
- Politician: https://tryglasshouse.ai/politicians/A000383.md
- Record: https://tryglasshouse.ai/trades/b3c06298-5fb8-4211-aaef-e09ca6837a93.md

## 3. Maria Elvira Salazar

- Member: Republican, House
- Transaction: Sell, $15,001 - $50,000
- Dates: traded Jun 2, 2026, disclosed Jul 7, 2026
- Market context: $188.83 at trade, $215.5 current (+14.12%)
- Politician: https://tryglasshouse.ai/politicians/S000168.md
- Record: https://tryglasshouse.ai/trades/ac5cdc6d-6064-493d-b472-ec8d22b46384.md

## 4. Gilbert Ray Cisneros, Jr.

- Member: Democrat, House
- Transaction: Buy, $1,001 - $15,000
- Dates: traded Jun 5, 2026, disclosed Jul 2, 2026
- Market context: $195.34 at trade, $215.5 current (+10.32%)
- Politician: https://tryglasshouse.ai/politicians/C001123.md
- Record: https://tryglasshouse.ai/trades/6d86ce27-4d77-44a4-9bb3-8f22949247e2.md

## 5. Ro Khanna

- Member: Democrat, House
- Transaction: Sell, $1,001 - $15,000
- Dates: traded May 27, 2026, disclosed Jun 9, 2026
- Market context: $196.97 at trade, $215.5 current (+9.41%)
- Politician: https://tryglasshouse.ai/politicians/K000389.md
- Record: https://tryglasshouse.ai/trades/f46c66ba-25c6-4abd-a7df-63b626b330e7.md

## 6. Ro Khanna

- Member: Democrat, House
- Transaction: Buy, $1,001 - $15,000
- Dates: traded May 15, 2026, disclosed Jun 9, 2026
- Market context: $192.95 at trade, $215.5 current (+11.69%)
- Politician: https://tryglasshouse.ai/politicians/K000389.md
- Record: https://tryglasshouse.ai/trades/6e309236-7f0a-4fd9-9aab-5725bec70e24.md

## 7. Ro Khanna

- Member: Democrat, House
- Transaction: Sell, $1,001 - $15,000
- Dates: traded Apr 13, 2026, disclosed May 11, 2026
- Market context: $176.37 at trade, $215.5 current (+22.19%)
- Politician: https://tryglasshouse.ai/politicians/K000389.md
- Record: https://tryglasshouse.ai/trades/da6254f2-b30e-452e-b6a3-073265b8c876.md

## 8. Gilbert Ray Cisneros, Jr.

- Member: Democrat, House
- Transaction: Buy, $1,001 - $15,000
- Dates: traded Jan 30, 2026, disclosed Feb 13, 2026
- Market context: $179.89 at trade, $215.5 current (+19.80%)
- Politician: https://tryglasshouse.ai/politicians/C001123.md
- Record: https://tryglasshouse.ai/trades/2fc5d2d8-f9c9-4fdf-beba-5b54e9e64ed2.md

## 9. Robert Bresnahan

- Member: Republican, House
- Transaction: Buy, $1,001 - $15,000
- Dates: traded May 15, 2025, disclosed Jun 9, 2025
- Market context: $123.7 at trade, $215.5 current (+74.21%)
- Politician: https://tryglasshouse.ai/politicians/B001327.md
- Record: https://tryglasshouse.ai/trades/113e961a-c1cf-4e0b-8e71-61199d9f3c9b.md

## 10. Robert Bresnahan

- Member: Republican, House
- Transaction: Sell, $1,001 - $15,000
- Dates: traded Apr 8, 2025, disclosed May 8, 2025
- Market context: $114.05 at trade, $215.5 current (+88.95%)
- Politician: https://tryglasshouse.ai/politicians/B001327.md
- Record: https://tryglasshouse.ai/trades/ab4fd598-e8b9-4a14-b15e-b01788071a3c.md

## 11. Robert Bresnahan

- Member: Republican, House
- Transaction: Buy, $1,001 - $15,000
- Dates: traded Feb 25, 2025, disclosed Mar 27, 2025
- Market context: $143.46 at trade, $215.5 current (+50.22%)
- Politician: https://tryglasshouse.ai/politicians/B001327.md
- Record: https://tryglasshouse.ai/trades/507762d9-0656-410e-ba29-baa50e03a854.md



Prices and percentage changes are market context, not portfolio returns. This information is not financial advice.