BIIBBIIBBiogen Inc
30 members of Congress disclosed 99 transactions in BIIB between Dec 20, 2013 and Aug 18, 2026.
Price, with congressional trades marked
BIIB $226.44 latest
+26%
Gilbert Ray Cisneros, Jr., Democrat
Gilbert Ray Cisneros, Jr., Democrat+23%AAAlan Armstrong, Republican
+14%
Maria Elvira Salazar, Republican
Maria Elvira Salazar, RepublicanMaria Elvira Salazar, Republican
Kevin Hern, RepublicanMarked trades (5)
| Traded | Member | Amount | Adj. close | BIIB since | SPY since | Difference | |
|---|---|---|---|---|---|---|---|
| Jan 30, 2026 | Gilbert Ray Cisneros, Jr. (D) | buy | ~$8K | $179.91 | +25.9% | +11.8% | +14.1% |
| Mar 27, 2026 | Alan Armstrong (R) | buy | ~$8K | $183.86 | +23.2% | +21.6% | +1.5% |
| May 11, 2026 | Maria Elvira Salazar (R) | buy | ~$75K | $198.03 | +14.3% | +4.3% | +10.0% |
| Jun 2, 2026 | Maria Elvira Salazar (R) | sell | ~$33K | $188.84 | +19.9% | +1.5% | +18.4% |
| Aug 18, 2026 | Kevin Hern (R) | sell | ~$8K | $212.65 | +6.5% | +0.2% | +6.2% |
Prices are dividend- and split-adjusted, so “adj. close” is not necessarily what the stock printed that day. The horizon runs to the latest close, so rows with different trade dates are not comparable to each other — and none of these is the benchmark-relative, fixed-window alpha the leaderboard ranks on.
99
Transactions
66 buys · 33 sells
30
Members
$1.3M
Est. volume
14D / 16R
Party split
distinct members
Transactions
99| Member | Type | Amount | Traded | Disclosed |
|---|---|---|---|---|
| Sell | $1K – $15K | Aug 18, 2026 | Sep 1, 2026 | |
| Buy | $1K – $15K | Mar 27, 2026 | Jul 21, 2026 | |
| Sell | $15K – $50K | Jun 2, 2026 | Jul 7, 2026 | |
| Buy | $1K – $15K | Jun 5, 2026 | Jul 2, 2026 | |
| Buy | $1K – $15K | May 12, 2026 | Jun 8, 2026 | |
| Buy | $50K – $100K | May 11, 2026 | Jun 8, 2026 | |
| Buy | $1K – $15K | May 11, 2026 | Jun 8, 2026 | |
| Buy | $1K – $15K | Jan 30, 2026 | Feb 13, 2026 | |
| Buy | $1K – $15K | May 15, 2025 | Jun 9, 2025 | |
| Sell | $1K – $15K | Apr 8, 2025 | May 8, 2025 | |
| Buy | $1K – $15K | Feb 25, 2025 | Mar 27, 2025 | |
| Buyspouse | $1K – $15K | Feb 2, 2021 | Nov 8, 2024 | |
| Sell (part) | $1K – $15K | Mar 6, 2023 | Apr 17, 2023 | |
| Sell | $15K – $50K | Jan 23, 2023 | Feb 9, 2023 | |
| Buychild | $1K – $15K | Nov 7, 2022 | Dec 6, 2022 | |
| Selljoint | $1K – $15K | Aug 3, 2022 | Sep 14, 2022 | |
| Buyjoint | $1K – $15K | Jul 20, 2022 | Aug 10, 2022 | |
| Selljoint | $1K – $15K | Mar 17, 2022 | Apr 17, 2022 | |
| Sellspouse | $1K – $15K | Jan 14, 2022 | Feb 11, 2022 | |
| Sell | $15K – $50K | Feb 16, 2021 | Mar 16, 2021 | |
| Buy | $1K – $15K | Sep 16, 2020 | Oct 14, 2020 | |
| Sell | $1K – $15K | Jun 24, 2019 | Apr 27, 2020 | |
| Sell (part) | $1K – $15K | Aug 13, 2019 | Sep 16, 2019 | |
| Sell (part) | $1K – $15K | May 13, 2019 | Jun 13, 2019 | |
| Buyspouse | $1K – $15K | Mar 12, 2019 | Apr 30, 2019 | |
| Sellspouse | $1K – $15K | Mar 22, 2019 | Apr 17, 2019 | |
| Sellspouse | $1K – $15K | Mar 25, 2019 | Apr 15, 2019 | |
| Buychild | $1K – $15K | May 2, 2018 | Jun 5, 2018 | |
| Buychild | $1K – $15K | May 2, 2018 | Jun 5, 2018 | |
| Selljoint | $1K – $15K | Jan 8, 2018 | Feb 13, 2018 | |
| Buyjoint | $1K – $15K | Jun 7, 2017 | Jun 22, 2017 | |
| Sell | $15K – $50K | Jan 30, 2017 | Feb 9, 2017 | |
| Sell (part)joint | $1K – $15K | Dec 23, 2016 | Jan 11, 2017 | |
| Sell | $15K – $50K | Dec 13, 2016 | Jan 11, 2017 | |
| Buychild | $1K – $15K | Dec 8, 2016 | Jan 7, 2017 | |
| Buychild | $1K – $15K | Dec 8, 2016 | Jan 7, 2017 | |
| Buyspouse | $1K – $15K | Nov 24, 2016 | Dec 6, 2016 | |
| Sellspouse | $1K – $15K | Sep 1, 2016 | Sep 15, 2016 unverified | |
| Buyspouse | $1K – $15K | Aug 17, 2016 | Sep 15, 2016 unverified | |
| Buyspouse | $1K – $15K | Aug 3, 2016 | Aug 30, 2016 | |
| Buyspouse | $1K – $15K | Aug 2, 2016 | Aug 30, 2016 | |
| Buyspouse | $1K – $15K | Aug 1, 2016 | Aug 30, 2016 | |
| Buy | $1K – $15K | Aug 10, 2015 | Aug 11, 2016 | |
| Buyjoint | $1K – $15K | Aug 10, 2015 | Aug 11, 2016 | |
| Buyspouse | $1K – $15K | Aug 4, 2015 | Aug 11, 2016 | |
| Buy | $1K – $15K | Aug 4, 2015 | Aug 11, 2016 | |
| Sell | $50K – $100K | Jul 21, 2016 | Aug 4, 2016 | |
| Buyspouse | $1K – $15K | Jul 20, 2016 | Aug 3, 2016 | |
| Buyjoint | $1K – $15K | Jun 21, 2016 | Jul 15, 2016 unverified | |
| Buyjoint | $1K – $15K | Jun 18, 2016 | Jul 15, 2016 unverified | |
| Buyjoint | $1K – $15K | Jun 17, 2016 | Jul 15, 2016 unverified | |
| Buyjoint | $1K – $15K | Jun 14, 2016 | Jul 15, 2016 unverified | |
| Buyjoint | $1K – $15K | Jun 1, 2016 | Jun 17, 2016 | |
| Sellspouse | $15K – $50K | Apr 19, 2016 | May 5, 2016 | |
| Buyspouse | $1K – $15K | Apr 18, 2016 | May 5, 2016 | |
| Buy | $1K – $15K | Feb 4, 2016 | Mar 10, 2016 | |
| Selljoint | $50K – $100K | Feb 2, 2016 | Mar 3, 2016 | |
| Buy | $1K – $15K | Jan 25, 2016 | Feb 2, 2016 | |
| Buy | $1K – $15K | Jan 19, 2016 | Feb 2, 2016 | |
| Buyjoint | $15K – $50K | Oct 28, 2015 | Nov 5, 2015 unverified | |
| Buychild | $1K – $15K | Sep 22, 2015 | Oct 8, 2015 | |
| Buychild | $1K – $15K | Sep 22, 2015 | Oct 8, 2015 | |
| Buyjoint | $1K – $15K | Aug 28, 2015 | Sep 24, 2015 | |
| Buyjoint | $1K – $15K | Aug 10, 2015 | Sep 1, 2015 | |
| Buy | $1K – $15K | Aug 10, 2015 | Sep 1, 2015 | |
| Buyspouse | $1K – $15K | Aug 4, 2015 | Sep 1, 2015 | |
| Buy | $1K – $15K | Aug 4, 2015 | Sep 1, 2015 | |
| Buy | $15K – $50K | May 7, 2015 | Aug 12, 2015 | |
| Selljoint | $15K – $50K | Jul 29, 2015 | Jul 29, 2015 unverified | |
| Buyjoint | $1K – $15K | Jul 28, 2015 | Jul 29, 2015 unverified | |
| Sellspouse | $1K – $15K | Jul 23, 2015 | Jul 25, 2015 | |
| Buyjoint | $1K – $15K | Jul 10, 2015 | Jul 21, 2015 | |
| Buy | $1K – $15K | Jul 10, 2015 | Jul 21, 2015 | |
| Sellspouse | $1K – $15K | Jul 23, 2014 | Jul 20, 2015 | |
| Buy | $15K – $50K | Jul 9, 2015 | Jul 15, 2015 | |
| Buy | $15K – $50K | May 7, 2015 | Jun 3, 2015 | |
| Buyspouse | $1K – $15K | Apr 29, 2015 | May 14, 2015 | |
| Buyspouse | $15K – $50K | Apr 15, 2015 | May 2, 2015 | |
| Buyspouse | $1K – $15K | Apr 7, 2015 | Apr 23, 2015 | |
| Selljoint | $15K – $50K | Feb 4, 2015 | Mar 11, 2015 | |
| Buyspouse | $1K – $15K | Dec 5, 2014 | Jan 21, 2015 | |
| Buyspouse | $1K – $15K | Nov 20, 2014 | Dec 8, 2014 | |
| Buyspouse | $1K – $15K | Oct 27, 2014 | Nov 10, 2014 | |
| Buyjoint | $1K – $15K | Sep 19, 2014 | Nov 6, 2014 | |
| Buyjoint | $1K – $15K | Aug 19, 2014 | Sep 12, 2014 | |
| Sellspouse | $1K – $15K | Jul 23, 2014 | Aug 14, 2014 | |
| Buyspouse | $1K – $15K | Apr 14, 2014 | May 9, 2014 | |
| Buyspouse | $1K – $15K | Apr 10, 2014 | May 9, 2014 | |
| Sell (part)spouse | $1K – $15K | Mar 27, 2014 | Apr 1, 2014 | |
| Sellchild | $1K – $15K | Feb 27, 2014 | Mar 3, 2014 | |
| Sellspouse | $1K – $15K | Feb 27, 2014 | Mar 3, 2014 | |
| Sellspouse | $1K – $15K | Feb 27, 2014 | Mar 3, 2014 | |
| Buy | $1K – $15K | Jan 24, 2014 | Feb 4, 2014 | |
| Buy | $1K – $15K | Jan 24, 2014 | Feb 4, 2014 | |
| Buychild | $1K – $15K | Jan 24, 2014 | Feb 4, 2014 | |
| Buychild | $1K – $15K | Jan 24, 2014 | Feb 4, 2014 | |
| Buy | $1K – $15K | Jan 16, 2014 | Feb 4, 2014 | |
| Sellchild | $1K – $15K | Dec 31, 2013 | Jan 7, 2014 | |
| Sellchild | $1K – $15K | Dec 20, 2013 | Jan 7, 2014 |
