Biogen | SEC Filings

Filing date	Description	Form	View
Apr 08, 1997	A preliminary proxy statement providing notification matters to be brought to a vote	PRE 14A	0000891618-97-001644.pdf 0000891618-97-001644.rtf View HTML
Mar 18, 2011	A preliminary proxy statement providing notification matters to be brought to a vote	PRE 14A	0000950123-11-026846.pdf 0000950123-11-026846.rtf 0000950123-11-026846.xls View HTML
Mar 26, 2012	A preliminary proxy statement providing notification matters to be brought to a vote	PRE 14A	0001193125-12-131635.pdf 0001193125-12-131635.rtf 0001193125-12-131635.xls View HTML
Apr 09, 2021	A preliminary proxy statement providing notification matters to be brought to a vote	PRE 14A	0001193125-21-111653.pdf 0001193125-21-111653.rtf 0001193125-21-111653.xls View HTML
Apr 12, 2024	A preliminary proxy statement providing notification matters to be brought to a vote	PRE 14A	0001193125-24-094828.pdf 0001193125-24-094828.rtf 0001193125-24-094828.xls EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA View HTML
Apr 10, 2009	Preliminary proxy statement containing contested solicitations	PREC14A	0000928475-09-000169.pdf 0000928475-09-000169.rtf View HTML
Apr 01, 2009	Preliminary proxy statement containing contested solicitations	PREC14A	0000950135-09-002460.pdf 0000950135-09-002460.rtf 0000950135-09-002460.xls View HTML
Apr 18, 2008	Preliminary proxy statement containing contested solicitations	PREC14A	0000928475-08-000107.pdf 0000928475-08-000107.rtf View HTML
Apr 15, 2009	Proxy soliciting materials. Revised preliminary material	PRER14A	0000950135-09-002848.pdf 0000950135-09-002848.rtf 0000950135-09-002848.xls View HTML
Apr 22, 2009	Proxy soliciting materials. Revised preliminary material	PRER14A	0000950135-09-003032.pdf 0000950135-09-003032.rtf 0000950135-09-003032.xls View HTML

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