Congress WatchBIIB stock trades by members of Congress
Biogen Inc. - Common Stock: 25 members of Congress disclosed 98 transactions between 2014-01-07 and 2026-10-07, 51 purchases and 47 sales.
98transactions
51purchases
47sales
25politicians
Activity by year
Transactions by the year the report was filed.
BIIB price and Congress trades
Daily closing price (split-adjusted). Dots mark days members of Congress filed trades in BIIB: green when more were purchases, red when more were sales. Use + and − (or Ctrl/⌘ + scroll) to zoom and drag to pan. Hover a month in the heatmap below to highlight it here, or click it to zoom to that month.
Congress buying and selling by month
Purchases and sales of BIIB reported by members of the House and Senate.
Green months had more purchases, red months more sales, teal an even split; darker means more trades. Months are by filing date. Senate filings after August 2026 and scanned House filings are not fully covered, so early years can look quieter than they were.
Who traded BIIB
| Politician | Trades | Buys | Sales | Last filing |
|---|---|---|---|---|
| Sheldon Whitehouse | 18 | 14 | 4 | 2019-04-17 |
| Rubén Hinojosa | 10 | 4 | 6 | 2015-08-31 |
| Josh Gottheimer | 9 | 5 | 4 | 2022-04-17 |
| Thomas MacArthur | 8 | 6 | 2 | 2018-06-05 |
| Gilbert Cisneros | 8 | 5 | 3 | 2026-07-02 |
| Ed Whitfield | 5 | 3 | 2 | 2016-07-15 |
| Maria Elvira Salazar | 5 | 3 | 2 | 2026-10-07 |
| K. Michael Conaway | 5 | 2 | 3 | 2016-05-24 |
| Dean Phillips | 4 | 1 | 3 | 2019-10-11 |
| Susan M Collins | 3 | 0 | 3 | 2015-07-20 |
| Gary Palmer | 3 | 2 | 1 | 2018-11-07 |
| Rob Bresnahan | 3 | 2 | 1 | 2025-06-09 |
| Kathy Manning | 3 | 1 | 2 | 2022-09-14 |
| Lamar Smith | 2 | 1 | 1 | 2017-04-10 |
| Alan S. Lowenthal | 2 | 1 | 1 | 2015-07-25 |
| Cheri Bustos | 1 | 0 | 1 | 2017-02-09 |
| Shri Thanedar | 1 | 0 | 1 | 2023-02-09 |
| Peter Meijer | 1 | 0 | 1 | 2021-03-16 |
| Christopher L. Jacobs | 1 | 0 | 1 | 2021-02-17 |
| Nicholas Van Taylor | 1 | 0 | 1 | 2019-04-15 |
| Donna Shalala | 1 | 0 | 1 | 2020-04-27 |
| Alan Armstrong | 1 | 1 | 0 | 2026-07-21 |
| Lois Frankel | 1 | 0 | 1 | 2014-06-18 |
| Kevin Hern | 1 | 0 | 1 | 2026-09-01 |
| Daniel Goldman | 1 | 0 | 1 | 2023-04-17 |
Disclosed transactions
Download all transactions as CSV
| Filed | Traded | Politician | Type | Amount | Filing |
|---|---|---|---|---|---|
| 2026-10-07 | 2026-09-24 | Maria Elvira Salazar | Partial sale | $1,001 - $15,000 | Source |
| 2026-09-01 | 2026-08-18 | Kevin Hern | Sale | $1,001 - $15,000 | Source |
| 2026-07-21 | 2026-03-27 | Alan Armstrong | Buy | $1,001 - $15,000 | Source |
| 2026-07-07 | 2026-06-02 | Maria Elvira Salazar | Sale | $15,001 - $50,000 | Source |
| 2026-07-02 | 2026-06-05 | Gilbert Cisneros | Buy | $1,001 - $15,000 | Source |
| 2026-06-08 | 2026-05-11 | Maria Elvira Salazar | Buy | $50,001 - $100,000 | Source |
| 2026-06-08 | 2026-05-11 | Maria Elvira Salazar | Buy | $1,001 - $15,000 | Source |
| 2026-06-08 | 2026-05-12 | Maria Elvira Salazar | Buy | $1,001 - $15,000 | Source |
| 2026-02-13 | 2026-01-30 | Gilbert Cisneros | Buy | $1,001 - $15,000 | Source |
| 2025-06-09 | 2025-05-15 | Rob Bresnahan | Buy | $1,001 - $15,000 | Source |
| 2025-05-08 | 2025-04-08 | Rob Bresnahan | Sale | $1,001 - $15,000 | Source |
| 2025-03-27 | 2025-02-25 | Rob Bresnahan | Buy | $1,001 - $15,000 | Source |
| 2023-04-17 | 2023-03-06 | Daniel Goldman | Partial sale | $1,001 - $15,000 | Source |
| 2023-02-09 | 2023-01-23 | Shri Thanedar | Sale | $15,001 - $50,000 | Source |
| 2022-09-14 | 2022-08-03 | Kathy Manning | Sale | $1,001 - $15,000 | Source |
| 2022-08-10 | 2022-07-20 | Kathy Manning | Buy | $1,001 - $15,000 | Source |
| 2022-04-17 | 2022-03-17 | Josh Gottheimer | Sale | $1,001 - $15,000 | Source |
| 2022-02-18 | 2022-01-10 | Josh Gottheimer | Buy | $1,001 - $15,000 g | Source |
| 2022-02-11 | 2022-01-14 | Kathy Manning | Sale | $1,001 - $15,000 g | Source |
| 2022-01-10 | 2021-12-09 | Josh Gottheimer | Partial sale | $1,001 - $15,000 f | Source |
| 2021-11-15 | 2021-10-18 | Josh Gottheimer | Buy | $1,001 - $15,000 c | Source |
| 2021-10-13 | 2021-09-15 | Josh Gottheimer | Partial sale | $1,001 - $15,000 d | Source |
| 2021-07-15 | 2021-06-08 | Josh Gottheimer | Buy | $1,001 - $15,000 c | Source |
| 2021-03-16 | 2021-02-16 | Peter Meijer | Sale | $15,001 - d $50,000 | Source |
| 2021-02-17 | 2021-01-04 | Christopher L. Jacobs | Sale | $1,001 - $15,000 c | Source |
| 2021-01-11 | 2020-12-22 | Gilbert Cisneros | Sale | $1,001 - $15,000 g | Source |
| 2020-10-14 | 2020-09-16 | Gilbert Cisneros | Buy | $1,001 - $15,000 c | Source |
| 2020-08-10 | 2020-07-07 | Josh Gottheimer | Buy | $1,001 - $15,000 d | Source |
| 2020-05-13 | 2020-04-29 | Gilbert Cisneros | Buy | $1,001 - $15,000 c | Source |
| 2020-04-27 | 2019-06-24 | Donna Shalala | Sale | $1,001 - $15,000 g | Source |
| 2020-04-16 | 2020-03-18 | Gilbert Cisneros | Sale | $1,001 - $15,000 g | Source |
| 2020-03-10 | 2020-02-07 | Gilbert Cisneros | Buy | $1,001 - $15,000 c | Source |
| 2019-10-11 | 2019-09-11 | Dean Phillips | Partial sale | $1,001 - $15,000 f | Source |
| 2019-09-16 | 2019-08-13 | Dean Phillips | Partial sale | $1,001 - $15,000 c | Source |
| 2019-07-11 | 2019-06-20 | Dean Phillips | Buy | $1,001 - $15,000 g | Source |
| 2019-06-18 | 2019-05-09 | Gilbert Cisneros | Sale | $1,001 - $15,000 c | Source |
| 2019-06-13 | 2019-05-13 | Dean Phillips | Partial sale | $1,001 - $15,000 c | Source |
| 2019-04-17 | 2019-03-22 | Sheldon Whitehouse | Sale | $1,001 - $15,000 | Source |
| 2019-04-15 | 2019-03-25 | Nicholas Van Taylor | Sale | $1,001 - $15,000 g | Source |
| 2018-11-16 | 2018-10-29 | Josh Gottheimer | Sale | $1,001 - $15,000 g | Source |
| 2018-11-07 | 2018-10-05 | Gary Palmer | Sale | $1,001 - $15,000 c | Source |
| 2018-10-02 | 2018-07-24 | Josh Gottheimer | Buy | $1,001 - $15,000 c | Source |
| 2018-09-29 | 2017-04-04 | Gary Palmer | Buy | $1,001 - $15,000 g | Source |
| 2018-09-29 | 2018-08-06 | Gary Palmer | Buy | $1,001 - $15,000 e | Source |
| 2018-06-05 | 2018-05-02 | Thomas MacArthur | Buy | $1,001 - $15,000 e | Source |
| 2018-06-05 | 2018-05-02 | Thomas MacArthur | Buy | $1,001 - $15,000 c | Source |
| 2018-02-13 | 2018-01-08 | Sheldon Whitehouse | Sale | $1,001 - $15,000 | Source |
| 2017-04-10 | 2017-03-29 | Lamar Smith | Sale | $1,001 - $15,000 | Source |
| 2017-02-09 | 2017-01-30 | Cheri Bustos | Sale | $15,001 - $50,000 | Source |
| 2017-01-11 | 2016-12-13 | Sheldon Whitehouse | Sale | $15,001 - $50,000 | Source |
| 2017-01-11 | 2016-12-23 | Sheldon Whitehouse | Partial sale | $1,001 - $15,000 | Source |
| 2017-01-07 | 2016-12-08 | Thomas MacArthur | Buy | $1,001 - $15,000 | Source |
| 2017-01-07 | 2016-12-08 | Thomas MacArthur | Buy | $1,001 - $15,000 | Source |
| 2016-08-11 | 2015-08-04 | Sheldon Whitehouse | Buy | $1,001 - $15,000 | Source |
| 2016-08-11 | 2015-08-10 | Sheldon Whitehouse | Buy | $1,001 - $15,000 | Source |
| 2016-08-11 | 2015-08-04 | Sheldon Whitehouse | Buy | $1,001 - $15,000 | Source |
| 2016-08-11 | 2015-08-10 | Sheldon Whitehouse | Buy | $1,001 - $15,000 | Source |
| 2016-07-15 | 2016-06-03 | Ed Whitfield | Sale | $1,001 - $15,000 | Source |
| 2016-05-24 | 2016-04-01 | K. Michael Conaway | Sale | $1,001 - $15,000 | Source |
| 2016-05-24 | 2016-04-01 | K. Michael Conaway | Sale | $1,001 - $15,000 | Source |
| 2016-05-10 | 2016-04-13 | Ed Whitfield | Sale | $1,001 - $15,000 | Source |
| 2016-03-10 | 2016-02-04 | Ed Whitfield | Buy | $1,001 - $15,000 | Source |
| 2016-03-03 | 2016-02-02 | Thomas MacArthur | Sale | $50,001 - $100,000 | Source |
| 2016-02-02 | 2016-01-25 | Ed Whitfield | Buy | $1,001 - $15,000 | Source |
| 2016-02-02 | 2016-01-19 | Ed Whitfield | Buy | $1,001 - $15,000 | Source |
| 2015-10-08 | 2015-09-22 | Thomas MacArthur | Buy | $1,001 - $15,000 | Source |
| 2015-10-08 | 2015-09-22 | Thomas MacArthur | Buy | $1,001 - $15,000 | Source |
| 2015-09-24 | 2015-08-28 | Sheldon Whitehouse | Buy | $1,001 - $15,000 | Source |
| 2015-09-16 | 2015-08-27 | Lamar Smith | Buy | $1,001 - $15,000 | Source |
| 2015-09-01 | 2015-08-04 | Sheldon Whitehouse | Buy | $1,001 - $15,000 | Source |
| 2015-09-01 | 2015-08-10 | Sheldon Whitehouse | Buy | $1,001 - $15,000 | Source |
| 2015-09-01 | 2015-08-04 | Sheldon Whitehouse | Buy | $1,001 - $15,000 | Source |
| 2015-09-01 | 2015-08-10 | Sheldon Whitehouse | Buy | $1,001 - $15,000 | Source |
| 2015-08-31 | 2015-08-21 | Rubén Hinojosa | Sale | $1,001 - $15,000 | Source |
| 2015-08-12 | 2015-05-07 | Sheldon Whitehouse | Buy | $15,001 - $50,000 | Source |
| 2015-07-25 | 2015-07-23 | Alan S. Lowenthal | Sale | $1,001 - $15,000 | Source |
| 2015-07-21 | 2015-07-10 | Sheldon Whitehouse | Buy | $1,001 - $15,000 | Source |
| 2015-07-21 | 2015-07-10 | Sheldon Whitehouse | Buy | $1,001 - $15,000 | Source |
| 2015-07-20 | 2014-07-23 | Susan M Collins | Sale | $1,001 - $15,000 | Source |
| 2015-06-03 | 2015-05-07 | Sheldon Whitehouse | Buy | $15,001 - $50,000 | Source |
| 2015-05-02 | 2015-04-15 | Alan S. Lowenthal | Buy | $15,001 - $50,000 | Source |
| 2015-04-23 | 2015-04-07 | Sheldon Whitehouse | Buy | $1,001 - $15,000 | Source |
| 2015-03-11 | 2015-02-04 | Thomas MacArthur | Sale | $15,001 - $50,000 | Source |
| 2015-03-03 | 2015-02-09 | K. Michael Conaway | Buy | $1,001 - $15,000 | Source |
| 2015-01-03 | 2014-12-02 | K. Michael Conaway | Buy | $1,001 - $15,000 | Source |
| 2014-08-18 | 2014-01-13 | K. Michael Conaway | Sale | $1,001 - $15,000 | Source |
| 2014-08-14 | 2014-07-23 | Susan M Collins | Sale | $1,001 - $15,000 | Source |
| 2014-06-18 | 2014-06-12 | Lois Frankel | Sale | $1,001 - $15,000 | Source |
| 2014-04-01 | 2014-03-27 | Susan M Collins | Partial sale | $1,001 - $15,000 | Source |
| 2014-03-03 | 2014-02-27 | Rubén Hinojosa | Sale | $1,001 - $15,000 | Source |
| 2014-03-03 | 2014-02-27 | Rubén Hinojosa | Sale | $1,001 - $15,000 | Source |
| 2014-03-03 | 2014-02-27 | Rubén Hinojosa | Sale | $1,001 - $15,000 | Source |
| 2014-02-04 | 2014-01-24 | Rubén Hinojosa | Buy | $1,001 - $15,000 | Source |
| 2014-02-04 | 2014-01-24 | Rubén Hinojosa | Buy | $1,001 - $15,000 | Source |
| 2014-02-04 | 2014-01-24 | Rubén Hinojosa | Buy | $1,001 - $15,000 | Source |
| 2014-02-04 | 2014-01-24 | Rubén Hinojosa | Buy | $1,001 - $15,000 | Source |
| 2014-01-07 | 2013-12-31 | Rubén Hinojosa | Sale | $1,001 - $15,000 | Source |
| 2014-01-07 | 2013-12-20 | Rubén Hinojosa | Sale | $1,001 - $15,000 | Source |
Stocks traded by the same politicians
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- UNH UnitedHealth Group Incorporated Common Stock, 19 shared
- CMCSA Comcast Corporation - Class A Common Stock, 18 shared
- GOOGL Alphabet Inc. - Class A Common Stock, 18 shared
- JPM JP Morgan Chase & Co. Common Stock, 18 shared
- GOOG Alphabet Inc. - Class C Capital Stock, 17 shared
- JNJ Johnson & Johnson Common Stock, 17 shared
- COST Costco Wholesale Corporation - Common Stock, 16 shared
Common questions
- Are members of Congress buying or selling BIIB?
- 25 members of Congress disclosed 98 transactions in Biogen Inc. - Common Stock (BIIB) between 2014-01-07 and 2026-10-07: 51 purchases and 47 sales.
- How active was Congress in BIIB recently?
- In 2026 filings, 9 transactions in BIIB were disclosed: 6 purchases and 3 sales.
- Which members of Congress trade BIIB?
- The most active in BIIB are Sheldon Whitehouse (18), Rubén Hinojosa (10) and Josh Gottheimer (9), by number of disclosed transactions. 25 members in all have traded it.