Filings Radar

SEC 8-K and 6-K filings classified by Claude with reasoning, plus Form 4 insider transactions. Ingested from EDGAR’s filing stream in near-real time, reconciled overnight.

BIOGEN INC. (BIIB)

CIK 0000875045 3 material events

Insider activity (SEC Form 4)

Open-market buys and sells only — the deliberate trades. Zero here doesn’t mean no filings: grants, option exercises and tax withholding (below) are compensation, not market trades.

Open-market · last 30 days: 0 buyers bought $0 0 sellers sold $0
Open-market · last 90 days: 0 buyers bought $0 1 seller sold $240K
InsiderRoleDateTransactionSharesValue
Minor Lloyd Director 2026-08-04 Open-market sell 10b5-1 593 $119K
Minor Lloyd Director 2026-08-03 Open-market sell 10b5-1 593 $121K
Freire Maria C Director 2026-06-09 Grant/award 2005 $0
HAWKINS WILLIAM A Director 2026-06-09 Grant/award 1505 $0
LANGER SUSAN Director 2026-06-09 Grant/award 1505 $0
Mantas Jesus B Director 2026-06-09 Grant/award 1505 $0
Minor Lloyd Director 2026-06-09 Grant/award 1505 $0
Pangalos Menelas N Director 2026-06-09 Option exercise 2370 $0
Pangalos Menelas N Director 2026-06-09 Grant/award 1505 $0
Patolawala Monish D Director 2026-06-09 Grant/award 1505 $0
Rowinsky Eric K Director 2026-06-09 Grant/award 1505 $0
SHERWIN STEPHEN A Director 2026-06-09 Grant/award 1505 $0
Keeney Adam Head of Corporate Development 2026-05-01 Option exercise 939 $0
Keeney Adam Head of Corporate Development 2026-05-01 Tax withholding 455 $85K
Godbout Sean Chief Accounting Officer 2026-04-01 Option exercise 181 $0
Godbout Sean Chief Accounting Officer 2026-04-01 Tax withholding 54 $10K
Murphy Nicole Head of Pharm Ops and Tech 2026-02-12 Open-market buy 3 $585
Singhal Priya Head of Development 2026-02-09 Open-market sell 10b5-1 2660 $532K
ALEXANDER SUSAN H EVP Chief Legal Officer 2026-02-06 Option exercise 2190 $0
ALEXANDER SUSAN H EVP Chief Legal Officer 2026-02-06 Tax withholding 1059 $213K
Most recent 20 reported transactions. Open-market buys (P) and sells (S) are the deliberate ones; grants and option exercises are compensation. Not investment advice.

Risk Radar (year-over-year Risk Factors)

← All Risk Radar

Fiscal period ending 2025-12-31 versus 2024-12-31view filing on EDGAR →

Regulatory pressure is the dominant new risk, with the OBBBA and MFN pricing policy now explicitly flagged as material adverse threats — a meaningful escalation from prior generic tax-deal language — while IRA-driven Medicare pricing concerns add a quantified dimension. Simultaneously, customer concentration has worsened materially, with two distributors now controlling nearly 44% of gross product revenue, up from 39%, compressing the company's negotiating position.

2 company-specific · 1 common-mode

Company-specific changes

Revised

New disclosure of OBBBA, MFN pricing policy, and executive orders with material potential impact on business. Specific quantified concern about IRA's adverse impact on Medicare-reliant products.

Our results of operations may be adversely affected by current and potential future healthcare reforms including those contained in the PPACA, IRA, OBBBA, MFN and executive orders. In the U.S.…

Revised

Customer concentration risk increased materially: two distributors' combined share rose from 39.3% to 43.9% of gross product revenue, indicating heightened dependency and negotiating leverage risk.

Product Indication Major Markets Non-Hodgkin's lymphoma CLL Rheumatoid arthritis Two forms of ANCA-associated vasculitis Pemphigus vulgaris U.S. Non-Hodgkin's lymphoma CLL U.S. In combination with…

Also disclosed — common-mode (Global tax reform pillar two)
Global tax reform pillar two Revised

New explicit disclosure of OBBBA impact with material adverse effect language; prior year referenced only generic Global Tax Deal. Escalated specificity and risk acknowledgment.

General Risk Factors Our effective tax rate fluctuates, and we may incur obligations in tax jurisdictions in excess of accrued amounts in our financial statements. As a global company, we are subject…

Material year-over-year changes to this company's Risk Factors (Item 1A), found by comparing each annual report to the prior year, judged for materiality, and classified as company-specific or common-mode against the cross-company catalog. Common-mode changes are the macro themes many companies disclose in common; they are collapsed above. A filing marked unchanged had no material change from the prior year; its summary describes the company's standing risks, which remain in force. Fiscal periods are the reporting period ends. Not investment advice.

Earnings release

8-K filed 2026-07-29 confidence 98% Item 2.02

Biogen issued a press release on July 29, 2026 announcing its second quarter 2026 financial results, including total revenue of $2.7 billion (up 3% year-over-year), GAAP diluted EPS of $0.66, and Non-GAAP diluted EPS of $3.60. The disclosure includes detailed revenue breakdowns by product and segment, expense summaries, cash flow information, and updated full-year 2026 guidance. This is a standard quarterly earnings release furnished under Item 2.02 of Form 8-K.

View raw filing on EDGAR →

Earnings release

8-K filed 2026-07-01 confidence 85% Item 2.02

Biogen discloses preliminary unaudited financial results for Q2 2026 and provides guidance for Q3 2026, including specific charges ($164M for Q2, $290-320M for Q3) and their impact on GAAP and non-GAAP earnings per share ($0.95 and $1.75-1.95 respectively). While the disclosure focuses on acquired in-process R&D and milestone expenses rather than comprehensive earnings, it constitutes a material financial results disclosure under Item 2.02 that would affect investor assessment of quarterly performance.

View raw filing on EDGAR →

Shareholder vote

8-K filed 2026-06-10 confidence 98% Item 5.07

This is a classic Item 5.07 disclosure reporting the final voting results from Biogen's June 9, 2026 Annual Meeting of Stockholders. The filing presents detailed vote tallies for three matters: election of ten directors, ratification of PricewaterhouseCoopers LLP as independent auditor, and advisory approval of executive compensation. These are routine but material shareholder governance matters that affect investor understanding of board composition and corporate oversight.

View raw filing on EDGAR →