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BIIB Financials Biogen

15 years of revenue, profit, cash flow and balance-sheet history through FY2025, from SEC filings — with a computed, factual read of the trend. Updated Overview →

Growth & profitability

  • Revenue has declined 6.0% per year over the past 5 years.
  • Net income has grown slower than revenue (-20.2% vs -6.0% per year).
  • Free cash flow has declined 11.6% per year over the past 5 years.

Financial health

  • Total debt ($6.3B) exceeds cash ($3.0B); net debt is $3.3B.
  • Total debt has grown in line with revenue (-3.3% vs -6.0% per year).
Revenue & net income
$0 $7B $14B 2011 2013 2015 2017 2019 2021 2023 2025
RevenueNet income
Margins (gross / operating / net)
0% 45% 91% 2011 2013 2015 2017 2019 2021 2023 2025
GrossOperatingNet
Free cash flow (CFO − capex)
$0 $3B $7B 2011 2013 2015 2017 2019 2021 2023 2025
Free cash flow
Cash vs total debt
$0 $4B $7B 2011 2013 2015 2017 2019 2021 2023 2025
CashTotal debt
Cash flow: operating / investing / financing
-$6B $609M $7B $0 2011 2013 2015 2017 2019 2021 2023 2025
OperatingInvestingFinancing

Key annual figures

FYRevenueNet incomeGross MOp MFCFTotal debtCash
2025 $9.9B $1.3B 75.7% 0.0% $2.1B $6.3B $3.0B
2024 $9.7B $1.6B 76.1% 0.0% $2.7B $4.5B $2.4B
2023 $9.8B $1.2B 74.2% 0.0% $1.3B $6.8B $1.0B
2022 $10.2B $3.0B 77.6% 0.0% $1.1B $6.3B $3.4B
2021 $11.0B $1.6B 80.8% 25.9% $3.4B $6.3B $2.3B
2020 $13.4B $4.0B 86.6% 33.8% $3.8B $7.4B $1.3B
2019 $14.4B $5.9B 86.4% 49.0% $6.6B $4.5B $2.9B
2018 $13.5B $4.4B 86.5% 43.8% $5.4B $5.9B $1.2B
2017 $12.3B $2.5B 86.7% 43.6% $3.7B $5.9B $1.6B
2016 $11.4B $3.7B 87.1% 45.0% $4.0B $6.5B
2015 $10.8B $3.5B 88.5% 45.4% $3.3B $6.5B
2014 $9.7B $2.9B 87.9% 40.9% $2.7B $580M
2013 $6.9B $1.9B 87.6% 36.3% $2.1B $592M
2012 $5.5B $1.4B 90.1% 33.6% $1.6B $687M
2011 $5.0B $1.2B 90.8% 34.2% $1.5B $1.0B

Valuation over time

How the market has priced BIIB against its own fundamentals since 2023-03 — each month-end's share price set against the most recent annual filing, so the multiple moves as price runs ahead of (or behind) earnings. Split-adjusted.

Price / earnings (P/E)
0.0 15.7 31.4 Mar '23 Aug '23 Jan '24 Jun '24 Nov '24 Apr '25 Sep '25 Feb '26
P/E
Price / sales (P/S)
0.0 2.2 4.4 Mar '23 Aug '23 Jan '24 Jun '24 Nov '24 Apr '25 Sep '25 Feb '26
P/S

Frequently asked questions

Is BIIB growing its revenue and profit?

Over the past 5 years, Biogen's revenue has declined 6.0% per year, and net income declined 20.2% per year. These are computed facts, not advice.

How much debt does BIIB have?

As of FY2025, Biogen reported $6.3B of total debt against $3.0B of cash.

What is BIIB's profit margin?

In FY2025, gross margin was 75.7%, operating margin —, and net margin 13.1%.

What is BIIB's P/E ratio?

As of Jun '26, Biogen traded at a price-to-earnings ratio of about 23.1× (market cap ÷ latest annual net income). The valuation charts above show how its P/E, P/S have moved with the share price. These are computed facts, not advice.

Where does this data come from?

All figures are extracted from the company’s SEC EDGAR/XBRL filings — 10-K annual reports and 10-Q quarterly reports (use the Annual / Quarterly toggle). Quarterly figures are derived from the as-filed statements (year-to-date amounts are differenced into discrete quarters). Growth rates and ratios are computed by tradmap; nothing here is investment advice.

Source: SEC EDGAR / XBRL (10-K + 10-Q filings) · prices EOD (Databento), corporate-action-adjusted · growth rates, valuation multiples & ratios computed by tradmap. Valuation uses each month-end price against the latest annual filing. Informational only — not investment advice.