Biogen (BIIB) FY2025 10-K Annual Report

Filed: Feb 6, 2026
Health Care
Biological Products, (No Diagnostic Substances)SEC EDGAR

Biogen (BIIB) 10-K annual report for fiscal year 2025, filed with SEC EDGAR on Feb 6, 2026. This page provides AI-powered analysis including business overview, management discussion & analysis (MD&A), risk factors, and key financial data such as revenue, net income, gross margin, operating margin, and return on equity (ROE) extracted from XBRL.

Biogen FY2025 10-K Analysis

Business Overview

  • Core business model: Global biopharmaceutical company developing and commercializing therapies primarily for neurology, specialized immunology, and rare diseases
  • New or emphasized segment: Expanded collaboration with Genentech on multiple anti-CD20 therapies including recently approved GAZYVA for lupus nephritis in Oct 2025
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Management Discussion & Analysis

  • No specific revenue or YoY change figures disclosed in provided text
  • No profitability or margin figures mentioned
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Risk Factors

  • Regulatory risk: IRA Medicare Part D redesign caused $90 million 2025 revenue loss, impacting SKYCLARYS and MS portfolio with future pricing enforcement uncertainty
  • Geopolitical risk: Russia-Ukraine conflict may disrupt supply; revenues from Russia, Ukraine, Middle East each <2.0% of total revenue in 2023-2025
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Biogen FY2025 Key Financial Metrics
XBRL

Revenue

$9.9B

+2.2% YoY

Net Income

$1.3B

-20.8% YoY

Net Margin

13.1%

-380bp YoY

ROE

7.1%

-268bp YoY

Total Assets

$29.4B

+5.0% YoY

EPS (Diluted)

$8.79

-21.4% YoY

Operating Cash Flow

$2.2B

-23.3% YoY

Source: XBRL data from Biogen FY2025 10-K filing on SEC EDGAR. All figures in USD.

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