Financials · BIIB

Biogen Inc. (BIIB) financials

For the twelve months ended Sep 30, 2026, Biogen Inc. reported $10.30B of revenue and $347.50M of net income.

Revenue, TTM
$10.30B
Revenue growth, YoY
+2.3%
Net income, TTM
$347.50M
Net income growth, YoY
-78.4%
Net margin
3.4%
Free cash flow, TTM
$2.07B
EPS, diluted, TTM
$2.32
EPS growth, YoY
-78.8%
Cash
$1.30B
Total debt
$7.29B
P/E
105.64
P/S
3.57
Market cap
$36.71B
Annual revenue$9.89B
FY2016FY2025
Annual net income$1.29B
FY2016FY2025
Annual free cash flow$2.05B
FY2016FY2025

BIIB revenue and earnings growth

BIIB revenueQ3 2026$2.80B

Quarter YoY
+10.6%
QoQ
+2.5%
FY YoY
+2.2%
5Y CAGR
-6.0%
10Y CAGR
-0.8%

BIIB revenue was $2.80B in fiscal Q3 2026 (ended Sep 30, 2026), up 10.6% from a year earlier and up 2.5% from the prior quarter. For the full fiscal 2025 it was $9.89B, up 2.2% from fiscal 2024. Compound annual growth was -6.0% over 5 years and -0.8% over 10 years. It rose in 5 of the last 10 fiscal years.

BIIB net incomeQ3 2026-$20.60M

FY YoY
-20.8%
5Y CAGR
-20.2%
10Y CAGR
-9.6%

BIIB net income was -$20.60M in fiscal Q3 2026 (ended Sep 30, 2026), compared with $466.50M a year earlier. For the full fiscal 2025 it was $1.29B, down 20.8% from fiscal 2024. Compound annual growth was -20.2% over 5 years and -9.6% over 10 years. It rose in 5 of the last 10 fiscal years.

BIIB EPSQ3 2026-$0.14

FY YoY
-21.4%
5Y CAGR
-18.7%
10Y CAGR
-5.4%

BIIB diluted EPS was -$0.14 in fiscal Q3 2026 (ended Sep 30, 2026), compared with $3.17 a year earlier. For the full fiscal 2025 it was $8.79, down 21.4% from fiscal 2024. Compound annual growth was -18.7% over 5 years and -5.4% over 10 years.

BIIB free cash flowQ3 2026$600.40M

Quarter YoY
-51.0%
QoQ
+47.2%
FY YoY
-24.7%
5Y CAGR
-11.6%
10Y CAGR
-4.6%

BIIB free cash flow was $600.40M in fiscal Q3 2026 (ended Sep 30, 2026), down 51.0% from a year earlier and up 47.2% from the prior quarter. For the full fiscal 2025 it was $2.05B, down 24.7% from fiscal 2024. Compound annual growth was -11.6% over 5 years and -4.6% over 10 years. It rose in 5 of the last 10 fiscal years.

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Income statement

Income statement
Line item
Dec 31, 2025
Dec 31, 2024
Dec 31, 2023
Dec 31, 2022
Dec 31, 2021
Dec 31, 2020
Dec 31, 2019
Dec 31, 2018
Dec 31, 2017
Dec 31, 2016
Revenue$9.89B$9.68B$9.84B$10.17B$10.98B$13.44B$14.38B$13.45B$12.27B$11.45B
Cost of revenue$2.40B$2.31B$2.53B$2.28B$2.11B$1.81B$1.96B$1.82B$1.63B$1.48B
Gross profit$7.49B$7.37B$7.30B$7.90B$8.87B$11.64B$12.42B$11.64B$10.64B$9.97B
Research and development$1.78B$1.98B$2.45B$2.23B$2.50B$3.99B$2.28B$2.60B$2.25B$1.97B
Selling, general and admin$2.43B$2.40B$2.55B$2.40B$2.67B$2.50B$2.37B$2.11B$1.93B$1.95B
Operating income----$2.84B$4.55B$7.04B$5.89B$5.35B$5.15B
Interest expense$267.50M$250.30M$246.90M$246.60M$253.60M$222.50M$187.40M$200.60M$250.80M$260.00M
Pre-tax income$1.56B$1.91B$1.30B$3.59B$1.75B$5.05B$7.13B$5.90B$5.13B$4.93B
Income tax$263.60M$273.80M$135.30M$632.80M$52.50M$992.30M$1.16B$1.43B$2.46B$1.24B
Net income$1.29B$1.63B$1.16B$3.05B$1.56B$4.00B$5.89B$4.43B$2.54B$3.70B
EPS, basic$8.83$11.21$8.02$20.96$10.44$24.86$31.47$21.63$11.94$16.96
EPS, diluted$8.79$11.18$7.97$20.87$10.40$24.80$31.42$21.58$11.92$16.93
Diluted shares147.1M145.9M145.6M146.0M149.6M161.3M187.4M205.3M213.0M218.8M

Balance sheet

Balance sheet
Line item
Dec 31, 2025
Dec 31, 2024
Dec 31, 2023
Dec 31, 2022
Dec 31, 2021
Dec 31, 2020
Dec 31, 2019
Dec 31, 2018
Dec 31, 2017
Dec 31, 2016
Cash and equivalents$3.01B$2.38B$1.05B$3.42B$2.26B$1.33B$2.91B$1.22B$1.57B$2.33B
Receivables$1.34B$1.40B$1.66B$1.71B$1.55B$1.91B$1.88B$1.96B$1.79B$1.44B
Inventory$2.17B$2.46B$2.53B$1.34B$1.35B$1.07B$804.20M$929.90M$902.70M$1.00B
Current assets$8.97B$7.46B$6.86B$9.79B$7.86B$6.89B$8.38B$7.64B$7.87B$8.73B
Goodwill$6.49B$6.48B$6.22B$5.75B$5.76B$5.76B$5.76B$5.71B$4.63B$3.67B
Total assets$29.44B$28.05B$26.84B$24.55B$23.88B$24.62B$27.23B$25.29B$23.65B$22.88B
Current liabilities$3.35B$5.53B$3.43B$3.27B$4.30B$3.74B$4.86B$3.30B$3.37B$3.42B
Short-term debt$0$1.75B$150.00M$0$999.10M$0$1.50B$0$3.20M$4.70M
Long-term debt--------$0$16.40M
Total debt$6.29B$4.55B$6.79B$6.28B$6.27B$7.43B$4.46B$5.94B$3.20M$21.10M
Total liabilities$11.18B$11.33B$12.05B$11.17B$12.92B$13.93B$13.90B$12.26B$11.05B$10.75B
Shareholders' equity$18.26B$16.72B$14.80B$13.39B$10.96B$10.69B$13.34B$13.03B$12.60B$12.14B

Cash flow

Cash flow
Line item
Dec 31, 2025
Dec 31, 2024
Dec 31, 2023
Dec 31, 2022
Dec 31, 2021
Dec 31, 2020
Dec 31, 2019
Dec 31, 2018
Dec 31, 2017
Dec 31, 2016
Operating cash flow$2.20B$2.88B$1.55B$1.38B$3.64B$4.23B$7.08B$6.19B$4.55B$4.59B
Capital expenditures$153.80M$153.70M$277.00M$240.30M$258.10M$424.80M$514.50M$770.60M$867.40M$616.10M
Free cash flow$2.05B$2.72B$1.27B$1.14B$3.38B$3.81B$6.56B$5.42B$3.68B$3.97B
Investing cash flow-$1.37B-$799.20M-$4.10B$1.58B-$563.70M-$608.60M$470.50M-$2.05B-$2.96B-$2.48B
Financing cash flow-$301.90M-$683.50M$149.30M-$1.75B-$2.09B-$5.27B-$5.86B-$4.47B-$2.38B-$1.05B
Share repurchases-$0$0$750.00M$1.80B$6.68B$5.87B$4.35B$1.37B$1.00B
Stock-based compensation$290.80M$291.20M$264.20M$254.10M$238.60M$198.30M$182.30M$157.50M$128.00M$154.80M
Depreciation and amortization$779.90M$673.20M$494.80M$518.40M$487.70M$457.20M$464.70M$650.50M$1.08B$682.70M

Key ratios

Key ratios
Line item
Dec 31, 2025
Dec 31, 2024
Dec 31, 2023
Dec 31, 2022
Dec 31, 2021
Dec 31, 2020
Dec 31, 2019
Dec 31, 2018
Dec 31, 2017
Dec 31, 2016
Revenue growth, YoY2.2%-1.6%-3.3%-7.4%-18.3%-6.5%6.9%9.6%7.2%6.4%
Net income growth, YoY-20.8%40.6%-61.9%95.8%-61.1%-32.1%32.9%74.5%-31.4%4.4%
EPS growth, YoY-21.4%40.3%-61.8%100.7%-58.1%-21.1%45.6%81.0%-29.6%10.4%
Gross margin75.7%76.1%74.2%77.6%80.8%86.6%86.4%86.5%86.7%87.1%
Operating margin----25.9%33.8%49.0%43.8%43.6%45.0%
Net margin13.1%16.9%11.8%29.9%14.2%29.8%41.0%32.9%20.7%32.3%
Free cash flow margin20.7%28.1%12.9%11.2%30.8%28.3%45.7%40.3%30.0%34.7%
Return on equity7.1%9.8%7.8%22.8%14.2%37.4%44.1%34.0%20.2%30.5%
Return on assets4.4%5.8%4.3%12.4%6.5%16.3%21.6%17.5%10.7%16.2%
Current ratio2.681.352.002.991.831.841.722.322.342.55
Debt to equity0.340.270.460.470.570.690.330.460.000.00

Source: XBRL data Biogen Inc. files with the SEC, latest filing dated Oct 28, 2026 (see filings on SEC EDGAR). Provided for information only, not investment advice. Check the filing before relying on a number.

* Worked out from the filings rather than stated in them: Q4 is the full year less the first nine months.

Per-share figures are as filed. The filings show no stock split in these periods.

EPS growth is left out where the share count moved enough to suggest a split the filings do not show. Growth rates need a positive starting figure. CAGR is compound annual growth between fiscal years. The CSV holds every period on file, in full figures, from the same SEC filings.

BIIB peers

CompanyRevenueGrowthNet incomeNet marginMarket cap
BIIB$10.30B+2.3%$347.50M3.4%$36.71B
AMGN$38.90B+8.2%$9.39B24.1%$249.05B
GILD$30.99B+6.5%-$3.86B-12.5%$207.00B
MRNA$2.52B+13.1%-$2.79B-110.5%$101.48B
ARGX$4.25B+88.6%$1.29B30.4%$57.55B
RVMD$0--$1.13B-$41.59B
BNTX€2.87B+4.3%-€1.14B-39.6%$21.98B
EXEL$2.50B+9.1%$885.14M35.5%$16.98B
NBIX$3.70B+38.0%$702.50M19.0%$16.66B

BIIB FAQ

9 questions
  • What is BIIB revenue?
    Biogen Inc. (BIIB) reported $10.30B of revenue for the twelve months ended Sep 30, 2026. That is up 2.3% from the year before. Revenue for fiscal 2025 was $9.89B.
  • Is BIIB profitable?
    Yes. Biogen Inc. earned $347.50M in net income for the twelve months ended Sep 30, 2026, a net margin of 3.4%.
  • How much cash and debt does BIIB have?
    Biogen Inc. reported $1.30B in cash and cash equivalents and $7.29B of debt on its most recent balance sheet in SEC filings.
  • How fast is BIIB revenue growing?
    Biogen Inc.'s revenue changed +2.2% in fiscal 2025, to $9.89B. Its compound annual growth rate was -6.0% over 5 years and -0.8% over 10 years.
  • What is BIIB gross margin?
    Biogen Inc.'s gross profit was $7.62B on $10.30B of revenue for the twelve months ended Sep 30, 2026, a gross margin of 74.0%.
  • What is BIIB free cash flow?
    Biogen Inc. generated $2.07B of free cash flow for the twelve months ended Sep 30, 2026, which is operating cash flow of $2.25B less capital expenditures.
  • What is BIIB earnings per share?
    Diluted earnings per share were $2.32 for the twelve months ended Sep 30, 2026, from SEC filings, restated for any stock split those filings show.
  • When did BIIB last report financial results?
    The latest statements here come from Biogen Inc.'s 10-Q filed on Oct 28, 2026, covering the period ended Sep 30, 2026.
  • Where does this BIIB financial data come from?
    Quantisnow builds these statements from the structured XBRL data Biogen Inc. files with the SEC. It is provided for information only and is not investment advice.