Biogen Inc. (BIIB): Shares Outstanding
146.80M
As of 2025-12-31
+0.6%
3-year compound annual growth
-0.7%
5-year compound annual growth
-3.9%
10-year compound annual growth
| Period ended | Shares Outstanding | Change YoY | Source filing |
|---|---|---|---|
| 2025-12-31 | 146.80M | +0.7% | 2026-02-06, Balance as of period end |
| 2024-12-31 | 145.80M | +0.6% | 2026-02-06, Balance as of period end |
| 2023-12-31 | 144.90M | +0.6% | 2026-02-06, Balance as of period end |
| 2022-12-31 | 144.00M | -2.0% | 2025-02-12, Balance as of period end |
| 2021-12-31 | 147.00M | -3.5% | 2024-02-14, Balance as of period end |
| 2020-12-31 | 152.40M | -12.5% | 2023-02-15, Balance as of period end |
| 2019-12-31 | 174.20M | -11.7% | 2022-02-03, Balance as of period end |
| 2018-12-31 | 197.20M | -6.8% | 2021-02-03, Balance as of period end |
| 2017-12-31 | 211.50M | -2.0% | 2020-02-06, Balance as of period end |
| 2016-12-31 | 215.90M | -1.2% | 2019-02-06, Balance as of period end |
| 2015-12-31 | 218.60M | -6.8% | 2017-02-02, Balance as of period end |
| 2014-12-31 | 234.60M | -0.7% | 2016-02-03, Balance as of period end |
| 2013-12-31 | 236.33M | -0.1% | 2015-02-04, Balance as of period end |
| 2012-12-31 | 236.58M | -2.3% | 2014-02-06, Balance as of period end |
| 2011-12-31 | 242.12M | +0.7% | 2013-02-05, Balance as of period end |
| 2010-12-31 | 240.54M | -12.5% | 2012-02-03, Balance as of period end |
| 2009-12-31 | 274.86M | -4.6% | 2010-02-09, Balance as of period end |
| 2008-12-31 | 288.05M | n/a | 2010-02-09, Balance as of period end |