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Congress trades · BIIB

Who in Congress traded Biogen (BIIB)?

In the last 3 months, 2 members of Congress traded BIIB: 0 buys, 2 sells. All time (filings since 2024): 5 members, 12 trades. Most recent: Rep. Maria Elvira Salazar sold $1K–$15K on Sep 24, 2026.
2members · last 3 mo
0buys · last 3 mo
2sells · last 3 mo
28 dmedian disclosure lag
1disclosed after 45 days

See the BIIB SEC fact sheet →

5 members of Congress have reported 12 trades in Biogen (BIIB) since 2024: 8 buys and 4 sells. The most active was Rep. Maria Elvira Salazar (5 trades); the latest was Rep. Maria Elvira Salazar, who sold $1K–$15K on Sep 24, 2026. 5 of these members have a ranked hit rate (10+ scored trades). This is a record of public disclosures, not a recommendation.

All time: every disclosed trade on the price chart

BuySellOption (ring; green bullish, red bearish)Size = top of reported range · scroll/pinch or drag across the chart to zoom, double-click to reset, or drag the window in the strip below · click a dot to jump to its row8-KForm 4

Every trade (all time)

Member · hit rateActionTradedReported amountDisclosed · lagThis trade vs SPY (90 d)SEC filings ±30 daysSource
MSRep. Maria Elvira Salazar R-FL27 33% hit · 96
Financial ServicesForeign Affairs		SELL (partial)Sep 24, 2026$1K–$15KOct 7, 2026
13 days		—2 Form 4PDF
KHRep. Kevin Hern R-OK01 48% hit · 99
Ways and Means		SELLAug 18, 2026$1K–$15KSep 1, 2026
14 days		—8-K 07-29 · 2 Form 4PDF
GCRep. Gilbert Ray Cisneros, Jr. D-CA31 46% hit · 1163
Armed ServicesSmall Business		BUYJun 5, 2026$1K–$15KJul 2, 2026
27 days		+10.1%8-K 07-01 8-K 06-10 8-K 05-14 · 9 Form 4PDF
MSRep. Maria Elvira Salazar R-FL27 33% hit · 96
Financial ServicesForeign Affairs		SELLJun 2, 2026$15K–$50KJul 7, 2026
35 days		-13.7%8-K 07-01 8-K 06-10 8-K 05-14 · 10 Form 4PDF
MSRep. Maria Elvira Salazar R-FL27 33% hit · 96
Financial ServicesForeign Affairs		BUYMay 12, 2026$1K–$15KJun 8, 2026
27 days		-0.8%8-K 06-10 8-K 05-14 8-K 04-29 · 10 Form 4PDF
MSRep. Maria Elvira Salazar R-FL27 33% hit · 96
Financial ServicesForeign Affairs		BUYMay 11, 2026$1K–$15KJun 8, 2026
28 days		+0.1%8-K 06-10 8-K 05-14 8-K 04-29 · 1 Form 4PDF
MSRep. Maria Elvira Salazar R-FL27 33% hit · 96
Financial ServicesForeign Affairs		BUYMay 11, 2026$50K–$100KJun 8, 2026
28 days		+0.1%8-K 06-10 8-K 05-14 8-K 04-29 · 1 Form 4PDF
AASen. Alan Armstrong R-OK 80% hit · 692
Health, Education, Labor, and PensionsIndian Affairs		BUYMar 27, 2026$1K–$15KJul 21, 2026
116 days ⚠ over 45		-5.9%8-K 04-06 8-K 03-31 8-K 03-11 · 1 Form 4eFD report
GCRep. Gilbert Ray Cisneros, Jr. D-CA31 46% hit · 1163
Armed ServicesSmall Business		BUYJan 30, 2026$1K–$15KFeb 13, 2026
14 days		+1.4%8-K 02-11 8-K 02-06 8-K 01-14 · 21 Form 4PDF
RBRep. Robert P. Bresnahan, Jr. R-PA08 48% hit · 545
Transportation and InfrastructureAgricultureSmall Business		BUYMay 15, 2025$1K–$15KJun 9, 2025
25 days		+0.1%8-K 05-12 8-K 05-01 · 3 Form 4PDF
RBRep. Robert P. Bresnahan, Jr. R-PA08 48% hit · 545
Transportation and InfrastructureAgricultureSmall Business		SELLApr 8, 2025$1K–$15KMay 8, 2025
30 days		+10.9%8-K 05-01 · 4 Form 4PDF
RBRep. Robert P. Bresnahan, Jr. R-PA08 48% hit · 545
Transportation and InfrastructureAgricultureSmall Business		BUYFeb 25, 2025$1K–$15KMar 27, 2025
30 days		-10.0%8-K 02-12 · 20 Form 4PDF
Education, not investment advice. This page reorganizes public disclosures so you can see what members of Congress reported. A disclosure is not evidence of wrongdoing, and past trades say nothing about future returns. Amounts are the ranges members report, not exact values. Members have up to 45 days to disclose, so recent trades may be missing. Paper filings that need manual review, trades without a confident ticker match, options, mutual funds, bonds and private holdings are not shown. Always check the source filing.

Sources: U.S. House Clerk Periodic Transaction Reports (disclosures-clerk.house.gov) and U.S. Senate eFD Periodic Transaction Reports (efdsearch.senate.gov), filed 2024 to present; SEC EDGAR submissions (Form 4 and 8-K filing dates); committee assignments from the unitedstates/congress-legislators project (current membership); daily closing prices from Yahoo Finance's public chart data (query1.finance.yahoo.com), which is unofficial and may be revised. Built 2026-11-03.