BIIBBiogen Inc.
Healthcare · Drug Manufacturers - GeneralNasdaqStockMkt cap $31.7B
Disclosed trades
69
0 in 30d · 4 in 90d
Politicians
14
Last trade Sep 24, 2026
Buys
35
$339K at range midpoints
Sells
34
$345.5K at range midpoints
Closing price · 365 days
Nov 6, 2025 – Nov 5, 2026
Monthly buys vs sells · 24 months
Counts of disclosed transactions
- Buys
- Sells (incl. partial)
Politicians who traded it
7 hold it now Estimated
| Politician | Seat | Trades | Buys | Sells | Bought (mid) | Sold (mid) | Last trade | Est. position Estimated |
|---|---|---|---|---|---|---|---|---|
| DRo Khanna | House · CA-17 | 36 | 19 | 17 | $144K | $136K | Sep 11, 2026 | $30K |
| DGilbert Ray Cisneros, Jr. | House · CA-31 | 7 | 5 | 2 | $40K | $16K | Jun 5, 2026 | $26.4K |
| DJosh Gottheimer | House · NJ-05 | 7 | 4 | 3 | $32K | $24K | Mar 17, 2022 | $3.3K |
| RMaria Elvira Salazar | House · FL-27 | 5 | 3 | 2 | $91K | $40.5K | Sep 24, 2026 | $61.5K |
| DKathy E. Manning | House · NC-06 | 3 | 1 | 2 | $8K | $16K | Aug 3, 2022 | $269 |
| RRobert P. Bresnahan, Jr. | House · PA-08 | 3 | 2 | 1 | $16K | $8K | May 15, 2025 | $15.8K |
| RAlan Armstrong | Senate · OK | 1 | 1 | 0 | $8K | $0 | Mar 27, 2026 | $10.6K |
| RByron Donalds | House · FL-19 | 1 | 0 | 1 | $0 | $8K | Feb 2, 2021 | — |
| RChris Jacobs | House · NY-27 | 1 | 0 | 1 | $0 | $8K | Jan 4, 2021 | — |
| DDaniel S. Goldman | House · NY-10 | 1 | 0 | 1 | $0 | $8K | Mar 6, 2023 | — |
| DDonna E. Shalala | House · FL-27 | 1 | 0 | 1 | $0 | $8K | Jun 24, 2019 | — |
| 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 | vs S&P Estimated | Traded | Filed | Source |
|---|---|---|---|---|---|---|---|---|---|
| RMaria Elvira Salazar | BIIB | Biogen Inc. - Common Stock (BIIB) | Partial | Self | $1,001 - $15,000 | -15.5% | Sep 24, 2026 | Oct 7, 202613d | Filing |
| DRo Khanna | BIIB | BIOgEN iNC CMN | Sell | Dependent | $1,001 - $15,000 | -15.5% | Sep 11, 2026 | Oct 7, 202626d | FilingOCR |
| DRo Khanna | BIIB | BIOGEN INC. CMN | Buy | Spouse | $1,001 - $15,000 | +15.5% | Sep 4, 2026 | Oct 7, 202633d | FilingOCR |
| RKevin Hern | BIIB | Biogen Inc. - Common Stock (BIIB) | Sell | Self | $1,001 - $15,000 | -16.7% | Aug 18, 2026 | Sep 1, 202614d | Filing |
| RAlan Armstrong | BIIB | Biogen Inc. - Common Stock | Buy | Self | $1,001 - $15,000 | +22.1% | Mar 27, 2026 | Jul 21, 2026116d | Filing |
| RMaria Elvira Salazar | BIIB | Biogen Inc. - Common Stock (BIIB) | Sell | Self | $15,001 - $50,000 | -20.6% | Jun 2, 2026 | Jul 7, 202635d | Filing |
| DGilbert Ray Cisneros, Jr. | BIIB | Biogen Inc. - Common Stock (BIIB) | Buy | Self | $1,001 - $15,000 | +14.4% | Jun 5, 2026 | Jul 2, 202627d | Filing |
| RMaria Elvira Salazar | BIIB | Biogen Inc. - Common Stock (BIIB) | Buy | Self | $1,001 - $15,000 | +27.5% | May 12, 2026 | Jun 8, 202627d | Filing |
| RMaria Elvira Salazar | BIIB | Biogen Inc. - Common Stock (BIIB) | Buy | Self | $50,001 - $100,000 | +27.5% | May 11, 2026 | Jun 8, 202628d | Filing |
| RMaria Elvira Salazar | BIIB | Biogen Inc. - Common Stock (BIIB) | Buy | Self | $1,001 - $15,000 | +27.5% | May 11, 2026 | Jun 8, 202628d | Filing |
| DRo Khanna | BIIB | BIOGEN INC. CMN | Sell | Spouse | $1,001 - $15,000 | -24.1% | Apr 13, 2026 | May 11, 202628d | FilingOCR |
| DRo Khanna | BIIB | BIOGEN INC. CMN | Partial | Spouse | $1,001 - $15,000 | -21.5% | Feb 6, 2026 | Mar 9, 202631d | FilingOCR |
| DGilbert Ray Cisneros, Jr. | BIIB | Biogen Inc. - Common Stock (BIIB) | Buy | Self | $1,001 - $15,000 | +16.6% | Jan 30, 2026 | Feb 13, 202614d | Filing |
| DRo Khanna | BIIB | BIOGEN INC. CMN | Buy | Spouse | $1,001 - $15,000 | +15.1% | Jan 29, 2026 | Feb 6, 20268d | FilingOCR |
| DRo Khanna | BIIB | BIOGEN INC, CMN | Buy | Dependent | $1,001 - $15,000 | +57.2% | Aug 26, 2025 | Sep 9, 202514d | FilingOCR |
| DRo Khanna | BIIB | BIOGEN INC. CMN | SellReview | Unknown | $1,001 - $15,000 | -58.5% | May 19, 2025 | Jun 10, 202522d | FilingOCR |
| RRobert P. Bresnahan, Jr. | BIIB | Biogen Inc. - Common Stock (BIIB) | Buy | Self | $1,001 - $15,000 | +59.6% | May 15, 2025 | Jun 9, 202525d | Filing |
| RRobert P. Bresnahan, Jr. | BIIB | Biogen Inc. - Common Stock (BIIB) | Sell | Self | $1,001 - $15,000 | -76.3% | Apr 8, 2025 | May 8, 202530d | Filing |
| RRobert P. Bresnahan, Jr. | BIIB | Biogen Inc. - Common Stock (BIIB) | Buy | Self | $1,001 - $15,000 | +44.6% | Feb 25, 2025 | Mar 27, 202530d | Filing |
| DRo Khanna | BIIB | BIOGEN INC. CMN | Buy | Dependent | $1,001 - $15,000 | +37.5% | Feb 25, 2025 | Mar 6, 20259d | FilingOCR |
| DRo Khanna | BIIB | BIOGEN INC. CMN | Sell | Spouse | $1,001 - $15,000 | -37.5% | Feb 19, 2025 | Mar 6, 202515d | FilingOCR |
| DRo Khanna | BIIB | BIOGEN INC, CMN | Partial | Spouse | $1,001 - $15,000 | -50.4% | Jan 17, 2025 | Feb 6, 202520d | FilingOCR |
| DRo Khanna | BIIB | BIOGEN INC. CMN | Sell | Dependent | $1,001 - $15,000 | -37.5% | Dec 18, 2024 | Jan 8, 202521d | FilingOCR |
| DRo Khanna | BIIB | BIOGEN INC. CMN | Buy | Spouse | $1,001 - $15,000 | +37.5% | Dec 16, 2024 | Jan 8, 202523d | FilingOCR |
| DRo Khanna | BIIB | BIOGEN INC. CMN | Buy | Dependent | $1,001 - $15,000 | +32.3% | Nov 15, 2024 | Dec 5, 202420d | FilingOCR |
| DRo Khanna | BIIB | BIOGEN INC, CMN | Buy | Dependent | $1,001 - $15,000 | +18.4% | Oct 14, 2024 | Nov 8, 202425d | FilingOCR |
| RByron Donalds | BIIB | Biogen Inc. (BlIB) | SellReview | Self | $1,001 - $15,000 | -18.4% | Feb 2, 2021 | Nov 8, 20241375d | FilingOCR |
| DRo Khanna | BIIB | BIOGEN INC. CMN | Partial | Dependent | $1,001 - $15,000 | +14.2% | Aug 5, 2024 | Sep 6, 202432d | FilingOCR |
| DRo Khanna | BIIB | BIOGEN INC. CMN | Buy | Spouse | $1,001 - $15,000 | -14.2% | Aug 2, 2024 | Sep 6, 202435d | FilingOCR |
| DRo Khanna | BIIB | BIOGEN INC. CMN | Buy | Spouse | $1,001 - $15,000 | -14.2% | Aug 2, 2024 | Sep 6, 202435d | FilingOCR |
| DRo Khanna | BIIB | BIOGEN INC. CMN | Buy | Dependent | $1,001 - $15,000 | -31.7% | Apr 26, 2024 | May 6, 202410d | FilingOCR |
| DRo Khanna | BIIB | BIOGEN INC. CMN | Sell | Dependent | $1,001 - $15,000 | +21.7% | Mar 25, 2024 | Apr 5, 202411d | FilingOCR |
| DRo Khanna | BIIB | BIOGEN INC. CMN | Sell | Spouse | $1,001 - $15,000 | +21.7% | Mar 20, 2024 | Apr 5, 202416d | FilingOCR |
| DRo Khanna | BIIB | BIOGEN INC. CMN | Buy | Spouse | $1,001 - $15,000 | -31.7% | Feb 13, 2024 | Mar 6, 202422d | FilingOCR |
| DRo Khanna | BIIB | BIOGEN INC, CMN | Buy | Spouse | $1,001 - $15,000 | -48.0% | Jan 10, 2024 | Feb 5, 202426d | FilingOCR |
| DRo Khanna | BIIB | BIOGEN INC. CMN | Buy | Dependent | $1,001 - $15,000 | -63.1% | Dec 5, 2023 | Jan 4, 202430d | FilingOCR |
| DRo Khanna | BIIB | BIOGEN INC. CMN | Sell | Spouse | $1,001 - $15,000 | +63.1% | Dec 4, 2023 | Jan 4, 202431d | FilingOCR |
| DRo Khanna | BIIB | BIOGEN INC, CMN | Sell | Dependent | $1,001 - $15,000 | +56.9% | Nov 3, 2023 | Dec 6, 202333d | FilingOCR |
| DRo Khanna | BIIB | BIOGEN INC, CMN | Buy | Spouse | $1,001 - $15,000 | -62.4% | Oct 10, 2023 | Nov 8, 202329d | FilingOCR |
| DRo Khanna | BIIB | BIOGEN INC. CMN | BuyReview | Unknown | $1,001 - $15,000 | -62.4% | Oct 2, 2023 | Nov 8, 202337d | FilingOCR |
| DRo Khanna | BIIB | BIOGEN INC. CMN | Sell | Spouse | $1,001 - $15,000 | +78.0% | Sep 6, 2023 | Oct 6, 202330d | FilingOCR |
| DDaniel S. Goldman | BIIB | Biogen Inc. (BIIB) | Partial | Self | $1,001 - $15,000 | +93.6% | Mar 6, 2023 | Apr 17, 202342d | Filing |
| DRo Khanna | BIIB | BIOgen INC. CMN | Buy | Spouse | $1,001 - $15,000 | -91.1% | Feb 10, 2023 | Mar 3, 202321d | FilingOCR |
| DShri Thanedar | BIIB | Biogen Inc. (BIIB) | Sell | Self | $15,001 - $50,000 | +95.1% | Jan 23, 2023 | Feb 9, 202317d | Filing |
| DRo Khanna | BIIB | BIOGEN INC. CMN | Partial | Spouse | $1,001 - $15,000 | +92.8% | Jan 9, 2023 | Feb 7, 202329d | FilingOCR |
| DRo Khanna | BIIB | BIOGEN INC. CMN | Buy | Spouse | $1,001 - $15,000 | -102.4% | Nov 3, 2022 | Dec 6, 202233d | FilingOCR |
| DKathy E. Manning | BIIB | Biogen Inc. (BIIB) | Sell | Joint | $1,001 - $15,000 | +66.2% | Aug 3, 2022 | Sep 14, 202242d | Filing |
| DRo Khanna | BIIB | BIOGEN INC. CMN | Buy | Spouse | $1,001 - $15,000 | -65.8% | Aug 23, 2022 | Sep 8, 202216d | FilingOCR |
| DKathy E. Manning | BIIB | Biogen Inc. (BIIB) | Buy | Joint | $1,001 - $15,000 | -64.2% | Jul 20, 2022 | Aug 10, 202221d | Filing |
| DRo Khanna | BIIB | BIOGEN INC. CMN | Sell | Spouse | $1,001 - $15,000 | +64.5% | May 23, 2022 | Jun 10, 202218d | FilingOCR |
Insider activity Filed
Insiders
22
Biological Products, (No Diagnostic Substances)
Open-market buys · 90d
0
$0 bought
Open-market sells · 90d
0
$0 sold
Net · 90d
$0
-$904.8K net over 12 months · last Oct 30, 2026
| Date | Insider | Kind | Security | Shares | Price | Value | Post-holdings | D/I | 10b5-1 | Source |
|---|---|---|---|---|---|---|---|---|---|---|
| Oct 30, 2026filed Nov 2, 2026 | Jane GroganHead of Research | Exercise | Restricted Stock Unitderiv. | −695 | $0.00 | — | 0 | D | — | 4 |
| Oct 30, 2026filed Nov 2, 2026 | Jane GroganHead of Research | Withholding | Common Stock | −345 | $253.62 | $87,499 | 4,408 | D | — | 4 |
| Oct 30, 2026filed Nov 2, 2026 | Jane GroganHead of Research | Exercise | Common Stock | 695 | $0.00 | $0 | 4,753 | D | — | 4 |
| Oct 2, 2026filed Oct 5, 2026 | Sean GodboutChief Accounting Officer | Exercise | Restricted Stock Unitderiv. | −27 | $0.00 | — | 0 | D | — | 4 |
| Oct 2, 2026filed Oct 5, 2026 | Sean GodboutChief Accounting Officer | Withholding | Common Stock | −8 | $219.88 | $1,759 | 1,458.98 | D | — | 4 |
| Oct 2, 2026filed Oct 5, 2026 | Sean GodboutChief Accounting Officer | Exercise | Common Stock | 27 | $0.00 | $0 | 1,466.98 | D | — | 4 |
| Oct 1, 2026filed Oct 5, 2026 | Sean GodboutChief Accounting Officer | Award | Restricted Stock Unitderiv. | 985 | $0.00 | — | 985 | D | — | 4 |
| 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 |
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).