BIIBBiogen Inc.
Healthcare · Drug Manufacturers - GeneralNasdaqStockMkt cap $31.7B
Disclosed trades
23
0 in 30d · 1 in 90d
Politicians
11
Last trade Aug 18, 2026
Buys
14
$179K at range midpoints
Sells
9
$145.5K at range midpoints
Closing price · 365 days
Sep 24, 2025 – Sep 23, 2026
Monthly buys vs sells · 24 months
Counts of disclosed transactions
- Buys
- Sells (incl. partial)
Politicians who traded it
| Politician | Seat | Trades | Buys | Sells | Bought (mid) | Sold (mid) | Last trade |
|---|---|---|---|---|---|---|---|
| DGilbert Ray Cisneros, Jr. | House · CA-31 | 4 | 4 | 0 | $32K | $0 | Jun 5, 2026 |
| DJosh Gottheimer | House · NJ-05 | 4 | 3 | 1 | $24K | $8K | Mar 17, 2022 |
| RMaria Elvira Salazar | House · FL-27 | 4 | 3 | 1 | $91K | $32.5K | Jun 2, 2026 |
| RRobert P. Bresnahan, Jr. | House · PA-08 | 3 | 2 | 1 | $16K | $8K | May 15, 2025 |
| DKathy E. Manning | House · NC-06 | 2 | 1 | 1 | $8K | $8K | Aug 3, 2022 |
| RAlan Armstrong | Senate · OK | 1 | 1 | 0 | $8K | $0 | Mar 27, 2026 |
| RByron Donalds | House · FL-19 | 1 | 0 | 1 | $0 | $8K | Feb 2, 2021 |
| DDaniel S. Goldman | House · NY-10 | 1 | 0 | 1 | $0 | $8K | Mar 6, 2023 |
| RKevin Hern | House · OK-01 | 1 | 0 | 1 | $0 | $8K | Aug 18, 2026 |
| RPeter Meijer | House · MI-03 | 1 | 0 | 1 | $0 | $32.5K | Feb 16, 2021 |
| DShri Thanedar | House · MI-13 | 1 | 0 | 1 | $0 | $32.5K | Jan 23, 2023 |
Recent trades
| Politician | Ticker | Asset | Type | Owner | Amount | Traded | Filed | Source |
|---|---|---|---|---|---|---|---|---|
| RKevin Hern | BIIB | Biogen Inc. - Common Stock (BIIB) | Sell | Self | $1,001 - $15,000 | Aug 18, 2026 | Sep 1, 202614d | Filing |
| RAlan Armstrong | BIIB | Biogen Inc. - Common Stock | Buy | Self | $1,001 - $15,000 | Mar 27, 2026 | Jul 21, 2026116d | Filing |
| RMaria Elvira Salazar | BIIB | Biogen Inc. - Common Stock (BIIB) | Sell | Self | $15,001 - $50,000 | Jun 2, 2026 | Jul 7, 202635d | Filing |
| DGilbert Ray Cisneros, Jr. | BIIB | Biogen Inc. - Common Stock (BIIB) | Buy | Self | $1,001 - $15,000 | Jun 5, 2026 | Jul 2, 202627d | Filing |
| RMaria Elvira Salazar | BIIB | Biogen Inc. - Common Stock (BIIB) | Buy | Self | $1,001 - $15,000 | May 12, 2026 | Jun 8, 202627d | Filing |
| RMaria Elvira Salazar | BIIB | Biogen Inc. - Common Stock (BIIB) | Buy | Self | $50,001 - $100,000 | May 11, 2026 | Jun 8, 202628d | Filing |
| RMaria Elvira Salazar | BIIB | Biogen Inc. - Common Stock (BIIB) | Buy | Self | $1,001 - $15,000 | May 11, 2026 | Jun 8, 202628d | Filing |
| DGilbert Ray Cisneros, Jr. | BIIB | Biogen Inc. - Common Stock (BIIB) | Buy | Self | $1,001 - $15,000 | Jan 30, 2026 | Feb 13, 202614d | Filing |
| RRobert P. Bresnahan, Jr. | BIIB | Biogen Inc. - Common Stock (BIIB) | Buy | Self | $1,001 - $15,000 | May 15, 2025 | Jun 9, 202525d | Filing |
| RRobert P. Bresnahan, Jr. | BIIB | Biogen Inc. - Common Stock (BIIB) | Sell | Self | $1,001 - $15,000 | Apr 8, 2025 | May 8, 202530d | Filing |
| RRobert P. Bresnahan, Jr. | BIIB | Biogen Inc. - Common Stock (BIIB) | Buy | Self | $1,001 - $15,000 | Feb 25, 2025 | Mar 27, 202530d | Filing |
| RByron Donalds | BIIB | Biogen Inc. (BlIB) | SellReview | Self | $1,001 - $15,000 | Feb 2, 2021 | Nov 8, 20241375d | FilingOCR |
| DDaniel S. Goldman | BIIB | Biogen Inc. (BIIB) | Partial | Self | $1,001 - $15,000 | Mar 6, 2023 | Apr 17, 202342d | Filing |
| DShri Thanedar | BIIB | Biogen Inc. (BIIB) | Sell | Self | $15,001 - $50,000 | Jan 23, 2023 | Feb 9, 202317d | Filing |
| DKathy E. Manning | BIIB | Biogen Inc. (BIIB) | Sell | Joint | $1,001 - $15,000 | Aug 3, 2022 | Sep 14, 202242d | Filing |
| DKathy E. Manning | BIIB | Biogen Inc. (BIIB) | Buy | Joint | $1,001 - $15,000 | Jul 20, 2022 | Aug 10, 202221d | Filing |
| DJosh Gottheimer | BIIB | Biogen Inc. (BIIB) | Sell | Joint | $1,001 - $15,000 | Mar 17, 2022 | Apr 17, 202231d | Filing |
| DJosh Gottheimer | BIIB | biogen Inc. (bIIb) | Buy | Joint | $1,001 - $15,000 | Jan 10, 2022 | Feb 18, 202239d | Filing |
| DJosh Gottheimer | BIIB | biogen Inc. (bIIb) | Buy | Joint | $1,001 - $15,000 | Oct 18, 2021 | Nov 15, 202128d | Filing |
| RPeter Meijer | BIIB | Biogen Inc. (BIIB) | Sell | Self | $15,001 - $50,000 | Feb 16, 2021 | Mar 16, 202128d | Filing |
| DJosh Gottheimer | BIIB | biogen Inc. (bIIb) | Buy | Joint | $1,001 - $15,000 | Jul 7, 2020 | Aug 10, 202034d | Filing |
| DGilbert Ray Cisneros, Jr. | BIIB | biogen Inc. (bIIb) | Buy | Self | $1,001 - $15,000 | Apr 29, 2020 | May 13, 202014d | Filing |
| DGilbert Ray Cisneros, Jr. | BIIB | biogen Inc. (bIIb) | Buy | Self | $1,001 - $15,000 | Feb 7, 2020 | Mar 10, 202032d | Filing |
Insider activity Filed
Insiders
22
Biological Products, (No Diagnostic Substances)
Open-market buys · 90d
0
$0 bought
Open-market sells · 90d
2
$239.7K sold
Net · 90d
-$239.7K
-$904.8K net over 12 months · last Sep 1, 2026
| Date | Insider | Kind | Security | Shares | Price | Value | Post-holdings | D/I | 10b5-1 | Source |
|---|---|---|---|---|---|---|---|---|---|---|
| Sep 1, 2026filed Sep 3, 2026 | Michael PariniChief Legal Officer | Award | Restricted Stock Unitderiv. | 7,405 | $0.00 | — | 7,405 | D | — | 4 |
| Aug 4, 2026filed Aug 5, 2026 | Lloyd Minor | Sale | Common Stock | −593 | $200.96 | $119,169 | 2,689 | D | 10b5-1 | 4 |
| Aug 3, 2026filed Aug 5, 2026 | Lloyd Minor | Sale | Common Stock | −593 | $203.34 | $120,581 | 3,282 | D | 10b5-1 | 4 |
| Jun 9, 2026filed Jun 11, 2026 | William A Hawkins | Award | Common Stock | 1,505 | $0.00 | $0 | 10,365 | D | — | 4 |
| Jun 9, 2026filed Jun 11, 2026 | Stephen A Sherwin | Award | Common Stock | 1,505 | $0.00 | $0 | 15,193 | D | — | 4 |
| Jun 9, 2026filed Jun 11, 2026 | Eric K Rowinsky | Award | Common Stock | 1,505 | $0.00 | $0 | 25,844 | D | — | 4 |
| Jun 9, 2026filed Jun 11, 2026 | Jesus B Mantas | Award | Common Stock | 1,505 | $0.00 | $0 | 11,263 | D | — | 4 |
| Jun 9, 2026filed Jun 11, 2026 | Susan Langer | Award | Common Stock | 1,505 | $0.00 | $0 | 6,634.10 | D | — | 4 |
| Jun 9, 2026filed Jun 11, 2026 | Monish D PatolawalaExecutive Vice President & CFO | Award | Common Stock | 1,505 | $0.00 | $0 | 5,215 | D | — | 4 |
| Jun 9, 2026filed Jun 11, 2026 | Menelas N Pangalos | Exercise | Restricted Stock Unitderiv. | −2,370 | $0.00 | — | 0 | D | — | 4 |
Shares, prices and post-transaction holdings are exactly as reported on SEC Form 4. Net figures count open-market buys minus open-market sales only (awards, exercises, withholding and gifts are excluded).