| Filed On | Filing |
|---|---|
| 28 Apr 2026 | DEF 14A |
| 28 Apr 2025 | DEF 14A |
| 26 Apr 2024 | DEF 14A |
| 28 Apr 2023 | DEF 14A |
| 29 Apr 2022 | DEF 14A |
| 23 Apr 2021 | DEF 14A |
| 20 Apr 2020 | DEFINITIVE PROXY STATEMENT |
| 30 Apr 2019 | DEFINITIVE PROXY STATEMENT |
| 27 Apr 2018 | DEF 14A |
| 26 Apr 2017 | DEF 14A |
| 15 Apr 2016 | DEF 14A |
| 30 Apr 2015 | DEFINITIVE PROXY STATEMENT |
| 30 Apr 2014 | DEF 14A |
| 30 Apr 2013 | DEFINITIVE PROXY STATEMENT |
| 27 Apr 2012 | DEF 14A |
| 21 Apr 2011 | DEF 14A |
| 28 Apr 2010 | BIOGEN IDEC, INC. |
| 25 Apr 2007 | BIOGEN IDEC, INC. |
| 14 Apr 2006 | BIOGEN IDEC, INC. |
| 15 Apr 2005 | BIOGEN IDEC INC. |
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