Biogen (BIIB) Stock Buyback History
TTM buyback yield N/A.
Biogen
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
Diluted vs basic shares (annual)
Weighted average shares from the income statement: diluted (EPS denominator and typical buyback-yield basis) compared with basic.
Shares outstanding (annual)
Year-over-year change in diluted weighted average shares (industry-standard for EPS and per-share capital return). Green is fewer shares vs the prior fiscal year; red is growth (dilution). The earliest year shown has no prior year to compare.
Dividend & buyback yield
Buybacks vs stock-based compensation
TTM coverage: 0.00x (buybacks ÷ SBC). Bars are fiscal-year totals.
Buyback spending history
| 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 | — | — | — |
Buybacks vs dividends (share of cash returned)
Buyback capacity (TTM)
TTM buybacks vs headroom (FCF − dividends, TTM)0% of headroom
Headroom $2.14B (TTM FCF − TTM dividends, clamped at zero).
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).