Biogen (BIIB) Stock Buyback History
TTM buyback yield N/A.
BIIB
TTM buyback yield
N/A
Shareholder yield (TTM)
N/A
5Y share count change
-9.1%
TTM buyback spend
N/A
SBC coverage (TTM)
0.00x
YoY change in spend
N/A
5Y CAGR of spend
-100.0%
Peak year (2020)
$6.68B
Cumulative spend
$38.32B
TTM metrics calculated from the four most recent reported quarters, ending (reported ).
Key takeaways
- Diluted share count is down 9.1% over the last ~5 fiscal years — buybacks are net-shrinking the share base.
- Cash buyback spend has compounded at -100.0% per year over the latest 5-year window.
- TTM repurchases used about 0% of free cash flow remaining after dividends.
Buyback context per fiscal year
Annual repurchases alongside stock-based compensation, diluted share count and the year-over-year change — useful for SBC-coverage and dilution-offset reading at a glance.
| Year | Buybacks | SBC | Net | Shares (dil.) | YoY shares | Buyback yield |
|---|---|---|---|---|---|---|
| 2025 | $0.00 | $290.80M | −$290.80M | 0.15B | 0.5% | — |
| 2024 | $0.00 | $291.20M | −$291.20M | 0.15B | 0.2% | — |
| 2023 | $0.00 | $264.20M | −$264.20M | 0.15B | -0.3% | — |
| 2022 | $750.00M | $254.10M | $495.90M | 0.15B | -2.4% | 1.88% |
| 2021 | $1.80B | $238.60M | $1.56B | 0.15B | -7.3% | 5.11% |
| 2020 | $6.68B | $198.30M | $6.48B | 0.16B | -13.9% | 17.75% |
| 2019 | $5.87B | $182.30M | $5.69B | 0.19B | -8.7% | 11.12% |
| 2018 | $4.35B | $157.50M | $4.20B | 0.21B | -3.6% | 7.24% |
| 2017 | $1.37B | $128.00M | $1.24B | 0.21B | -2.7% | 2.03% |
| 2016 | $1.00B | $154.80M | $845.20M | 0.22B | -5.4% | 1.63% |
| 2015 | $5.00B | $161.40M | $4.84B | 0.23B | -2.5% | 7.41% |
| 2014 | $886.78M | $155.30M | $731.48M | 0.24B | -0.5% | 1.11% |
| 2013 | $400.31M | $136.29M | $264.02M | 0.24B | -0.6% | 0.61% |
| 2012 | $984.72M | $118.57M | $866.15M | 0.24B | -2.2% | 2.84% |
| 2011 | $497.98M | $113.00M | $384.97M | 0.25B | -3.9% | 1.86% |
| 2010 | $2.08B | $167.83M | $1.91B | 0.25B | -12.0% | 12.83% |
| 2009 | $751.17M | $160.90M | $590.27M | 0.29B | -1.9% | 5.20% |
| 2008 | $738.94M | $146.21M | $592.73M | 0.29B | -7.9% | 5.39% |
| 2007 | $2.99B | $123.13M | $2.87B | 0.32B | -7.3% | 17.74% |
| 2006 | $320.27M | $126.78M | $193.49M | 0.35B | -0.3% | 1.91% |
| 2005 | $322.59M | $38.15M | $284.44M | 0.35B | 0.8% | 2.10% |
| 2004 | $734.43M | $16.80M | $717.63M | 0.34B | 2.9% | 3.29% |
| 2003 | $0.00 | $0.00 | $0.00 | 0.33B | -16.3% | — |
| 2002 | $135.00M | $2.36M | $132.64M | 0.40B | 0.0% | 1.04% |
| 2001 | $88.28M | $0.00 | $88.28M | 0.40B | -14.0% | 0.33% |
| 2000 | $300.19M | $0.00 | $300.19M | 0.46B | -2.0% | — |
| 1999 | $197.72M | $0.00 | $197.72M | 0.47B | -49.9% | — |
| 1998 | $65.55M | $0.00 | $65.55M | 0.95B | 2.0% | — |
| 1997 | $7.00M | $0.00 | $7.00M | 0.93B | 0.4% | — |
| 1996 | $0.00 | $0.00 | $0.00 | 0.92B | — | — |
| 1995 | $0.00 | $0.00 | $0.00 | — | — | — |
| 1994 | $0.00 | $0.00 | $0.00 | — | — | — |
| 1993 | $0.00 | $0.00 | $0.00 | — | — | — |
| 1992 | $0.00 | $0.00 | $0.00 | — | — | — |
| 1991 | $0.00 | $0.00 | $0.00 | — | — | — |
| 1990 | $0.00 | $0.00 | $0.00 | — | — | — |
| 1989 | $0.00 | $0.00 | $0.00 | — | — | — |
Cash buyback spend (USD) — annual & quarterly history
Trailing-twelve-month and per-period cash repurchases for Biogen (BIIB) from the consolidated cash flow statement (line: common stock repurchased), in USD as filed.
Cash buyback spend over time for Biogen (BIIB)
Per-period cash repurchases
Cash buyback spend annual + quarterly history for Biogen (BIIB)
| Fiscal year | Period ended | Reported | Buyback Spend | YoY | YoY change |
|---|---|---|---|---|---|
| 2025 | $0 | — | $0 | ||
| 2024 | $0 | — | $0 | ||
| 2023 | $0 | -100.0% | -$750.00M | ||
| 2022 | $750.00M | -58.3% | -$1.05B | ||
| 2021 | $1.80B | -73.1% | -$4.88B | ||
| 2020 | $6.68B | +13.8% | +$810.80M | ||
| 2019 | $5.87B | +34.8% | +$1.52B | ||
| 2018 | $4.35B | +218.8% | +$2.99B | ||
| 2017 | $1.37B | +36.5% | +$365.40M | ||
| 2016 | $1.00B | -80.0% | -$4.00B | ||
| 2015 | $5.00B | +463.8% | +$4.11B | ||
| 2014 | $886.78M | +121.5% | +$486.47M | ||
| 2013 | $400.31M | -59.3% | -$584.41M | ||
| 2012 | $984.72M | +97.7% | +$486.74M | ||
| 2011 | $497.98M | -76.0% | -$1.58B | ||
| 2010 | $2.08B | +176.6% | +$1.33B | ||
| 2009 | $751.17M | +1.7% | +$12.23M | ||
| 2008 | $738.94M | -75.3% | -$2.25B | ||
| 2007 | $2.99B | +834.0% | +$2.67B | ||
| 2006 | $320.27M | -0.7% | -$2.32M | ||
| 2005 | $322.59M | -56.1% | -$411.84M | ||
| 2004 | $734.43M | — | +$734.43M | ||
| 2003 | $0 | -100.0% | -$135.00M | ||
| 2002 | $135.00M | +52.9% | +$46.72M | ||
| 2001 | $88.28M | -70.6% | -$211.91M | ||
| 2000 | $300.19M | +51.8% | +$102.47M | ||
| 1999 | $197.72M | +201.6% | +$132.17M | ||
| 1998 | $65.55M | +836.4% | +$58.55M | ||
| 1997 | $7.00M | — | +$7.00M | ||
| 1996 | $0 | — | $0 | ||
| 1995 | $0 | — | $0 | ||
| 1994 | $0 | — | $0 | ||
| 1993 | $0 | — | $0 | ||
| 1992 | $0 | — | $0 | ||
| 1991 | $0 | — | $0 | ||
| 1990 | $0 | — | $0 | ||
| 1989 | $0 | — | — |
2025's annual buyback spend for Biogen (BIIB) came in at $0.
Through 2020–2025 (5 years), Biogen buyback spend delivered a -100.0% annualised rate; with a net decline across the window.
Between 2020 and 2025, Biogen buyback spend plunged 100.0%, falling from $6.68B to $0.
The dataset's maximum buyback spend sits at $6.68B (2020); the minimum reading of $0 dates to 1989.
Within Healthcare, Biogen (BIIB) ranks 8th among 8 peers we track. The peer median for buyback spend is $2.75B.
Biogen Buyback Spend 2025: $0
Biogen buyback spend in 2025 was $0.
Biogen Buyback Spend 2024: $0
Biogen buyback spend in 2024 was $0.
Biogen Buyback Spend 2023: $0
Biogen buyback spend in 2023 was $0, plunged 100.0% below 2022.
Biogen Buyback Spend 2022: $750.00M
Biogen buyback spend in 2022 was $750.00M, plunged 58.3% below 2021.
Biogen Buyback Spend 2021: $1.80B
Biogen buyback spend in 2021 was $1.80B.
See more financial history for Biogen (BIIB).
Sector peers by buyback spend
Companies in the same sector as Biogen, ranked by their latest buyback spend.
| Company | Buyback Spend | Sector |
|---|---|---|
| Johnson & Johnson (JNJ) | $5.95B | Healthcare |
| UnitedHealth Group (UNH) | $5.54B | Healthcare |
| Merck & Co. (MRK) | $5.08B | Healthcare |
| Eli Lilly (LLY) | $4.11B | Healthcare |
| Novo Nordisk (NVO) | $1.39B | Healthcare |
| AbbVie (ABBV) | $980.00M | Healthcare |
| AstraZeneca (AZN) | $719.66M | Healthcare |
| Amgen (AMGN) | $0 | Healthcare |
Share count history
Diluted weighted-average shares drive the EPS denominator and per-share capital-return maths. A falling diluted share count means buybacks are outpacing dilution from stock-based compensation and option exercises.
Diluted vs basic shares (annual)
Year-over-year change in diluted shares
Green is fewer shares vs the prior fiscal year (net repurchase); red is growth (dilution). The earliest year shown has no prior year to compare.
Dividend & buyback yield over time
Stacked annual yields — buyback yield (TTM cash repurchases ÷ market cap) plus dividend yield from the same fiscal-year-end key-metrics period — show how total cash return per dollar of equity has evolved.
Buybacks vs stock-based compensation
Annual cash repurchases set against stock-based compensation. Coverage above 1× means buybacks fully offset the equity dilution from SBC. TTM coverage: 0.00×.
Capital allocation mix
How Biogen splits cash returned to shareholders between dividends and buybacks, plus the headroom on free cash flow that's still available for additional repurchases.
Buybacks vs dividends (share of cash returned)
Buyback capacity (TTM)
Free cash flow minus dividends paid versus actual TTM repurchases — the headroom bar shows how much of post-dividend FCF is still being deployed elsewhere.
Headroom $2.62B (TTM FCF − TTM dividends, clamped at zero).
Data & methodology
Where do buyback, dividend and compensation figures come from?
Cash buyback spend (common stock repurchased), dividends paid and stock-based compensation come from Biogen's consolidated cash flow statements — quarterly 10-Q and annual 10-K SEC filings, in USD as reported.
How are diluted shares and yields calculated?
Diluted weighted-average share counts come from the income statement (EPS denominator). Trailing twelve-month (TTM) aggregates sum the four most recent reported quarters. Buyback and dividend yields divide TTM cash flows by market capitalisation at the latest quarter-end.
How is buyback capacity defined?
Capacity compares TTM repurchases to free cash flow after dividends: operating cash flow minus capital expenditure, minus dividends paid, versus actual buybacks over the same trailing window.
Is this investment advice?
No. Figures are for informational and educational use only. Past buybacks and dividends do not predict future returns.
Frequently asked questions
Does Biogen buy back its own stock?
Yes, Biogen (BIIB) has repurchased shares in recent periods. See the history table and charts on this page for amounts and trends.
Is Biogen diluting shareholders?
Compare stock-based compensation (SBC) to buybacks in the chart above. Net effect varies by year; see annual buyback vs SBC bars and the history table.
How has Biogen's share count changed?
Diluted weighted average shares changed by about -9.1% over roughly five fiscal years (annual income statement data).
What is Biogen's buyback spend?
Latest reported buyback spend for Biogen (BIIB) is $0 (period ending March 31, 2026).
What is the long-term growth rate of Biogen buyback spend?
Biogen (BIIB) buyback spend compound annual growth rate is -100.0% over the most recent 5 years available.
When did Biogen buyback spend hit its highest annual value?
Biogen buyback spend reached its highest annual value of $6.68B in 2020.
What was Biogen buyback spend in 2024?
Biogen (BIIB) buyback spend in 2024 was $0.
What was Biogen buyback spend in 2025?
Biogen (BIIB) buyback spend in 2025 was $0.
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