Biogen Inc.

Gilbert Cisneros bought between $1,001 - $15,000 of BIIB shares on 5 June.

Maria Elvira Salazar sold between $15,001 - $50,000 of BIIB shares on 2 June.

Maria Elvira Salazar bought between $1,001 - $15,000 of BIIB shares on 12 May.

Maria Elvira Salazar bought between $1,001 - $15,000 of BIIB shares on 11 May.

Maria Elvira Salazar bought between $50,001 - $100,000 of BIIB shares on 11 May.

Gilbert Cisneros bought between $1,001 - $15,000 of BIIB shares on 30 January.

Ro Khanna bought between $1,001 - $15,000 of BIIB shares on 26 August.

Rob Bresnahan bought between $1,001 - $15,000 of BIIB shares on 15 May.

Rob Bresnahan sold between $1,001 - $15,000 of BIIB shares on 8 April.

Rob Bresnahan bought between $1,001 - $15,000 of BIIB shares on 25 February.

Ro Khanna bought between $1,001 - $15,000 of BIIB shares on 15 November.

Ro Khanna sold between $1,001 - $15,000 of BIIB shares on 9 September.

Ro Khanna sold between $1,001 - $15,000 of BIIB shares on 25 March.

Ro Khanna sold between $1,001 - $15,000 of BIIB shares on 20 March.

Ro Khanna bought between $1,001 - $15,000 of BIIB shares on 13 February.

Ro Khanna bought between $1,001 - $15,000 of BIIB shares on 10 January.

Ro Khanna sold between $1,001 - $15,000 of BIIB shares on 3 November.

Ro Khanna bought between $1,001 - $15,000 of BIIB shares on 10 October.

Ro Khanna bought between $1,001 - $15,000 of BIIB shares on 2 October.

Ro Khanna sold between $1,001 - $15,000 of BIIB shares on 6 September.

Ro Khanna sold between $1,001 - $15,000 of BIIB shares on 29 August.

Ro Khanna sold between $1,001 - $15,000 of BIIB shares on 10 April.

Daniel Goldman sold between $1,001 - $15,000 of BIIB shares on 6 March.

Ro Khanna bought between $1,001 - $15,000 of BIIB shares on 10 February.

Ro Khanna sold between $1,001 - $15,000 of BIIB shares on 9 January.

Ro Khanna bought between $1,001 - $15,000 of BIIB shares on 6 December.

Ro Khanna bought between $1,001 - $15,000 of BIIB shares on 3 November.

Ro Khanna bought between $1,001 - $15,000 of BIIB shares on 23 August.

Kathy Manning sold between $1,001 - $15,000 of BIIB shares on 3 August.

Ro Khanna bought between $1,001 - $15,000 of BIIB shares on 1 August.

Kathy Manning bought between $1,001 - $15,000 of BIIB shares on 20 July.

Ro Khanna bought between $1,001 - $15,000 of BIIB shares on 17 June.

Ro Khanna sold between $1,001 - $15,000 of BIIB shares on 23 May.

Ro Khanna sold between $1,001 - $15,000 of BIIB shares on 10 May.

Ro Khanna bought between $1,001 - $15,000 of BIIB shares on 21 April.

Ro Khanna sold between $1,001 - $15,000 of BIIB shares on 11 April.

Josh Gottheimer sold between $1,001 - $15,000 of BIIB shares on 17 March.

Ro Khanna sold between $1,001 - $15,000 of BIIB shares on 17 February.

Ro Khanna sold between $1,001 - $15,000 of BIIB shares on 14 February.

Ro Khanna bought between $1,001 - $15,000 of BIIB shares on 21 January.

Ro Khanna bought between $1,001 - $15,000 of BIIB shares on 20 January.

Kathy Manning sold between $1,001 - $15,000 of BIIB shares on 14 January.

Ro Khanna bought between $1,001 - $15,000 of BIIB shares on 11 January.

Josh Gottheimer bought between $1,001 - $15,000 of BIIB shares on 10 January.

Josh Gottheimer sold between $1,001 - $15,000 of BIIB shares on 9 December.

Josh Gottheimer bought between $1,001 - $15,000 of BIIB shares on 18 October.

Josh Gottheimer sold between $1,001 - $15,000 of BIIB shares on 15 September.

Josh Gottheimer bought between $1,001 - $15,000 of BIIB shares on 8 June.

Peter Meijer sold between $15,001 - $50,000 of BIIB shares on 16 February.

Chris Jacobs sold between $1,001 - $15,000 of BIIB shares on 4 January.

Gilbert Cisneros sold between $1,001 - $15,000 of BIIB shares on 22 December.

Gilbert Cisneros bought between $1,001 - $15,000 of BIIB shares on 16 September.

Josh Gottheimer bought between $1,001 - $15,000 of BIIB shares on 7 July.

Gilbert Cisneros bought between $1,001 - $15,000 of BIIB shares on 29 April.

Gilbert Cisneros sold between $1,001 - $15,000 of BIIB shares on 18 March.

Gilbert Cisneros bought between $1,001 - $15,000 of BIIB shares on 7 February.

Donna Shalala sold between $1,001 - $15,000 of BIIB shares on 24 June.

Dean Phillips bought between $1,001 - $15,000 of BIIB shares on 20 June.

Sheldon Whitehouse sold between $1,001 - $15,000 of BIIB shares on 22 March.

Josh Gottheimer sold between $1,001 - $15,000 of BIIB shares on 29 October.

Gary Palmer sold between $1,001 - $15,000 of BIIB shares on 5 October.

Sheldon Whitehouse sold between $1,001 - $15,000 of BIIB shares on 8 January.

Sheldon Whitehouse sold between $1,001 - $15,000 of BIIB shares on 23 December.

Sheldon Whitehouse sold between $15,001 - $50,000 of BIIB shares on 13 December.

James M Inhofe sold between $50,001 - $100,000 of BIIB shares on 21 July.

Sheldon Whitehouse bought between $1,001 - $15,000 of BIIB shares on 28 August.

Sheldon Whitehouse bought between $1,001 - $15,000 of BIIB shares on 10 August.

Sheldon Whitehouse bought between $1,001 - $15,000 of BIIB shares on 4 August.

Sheldon Whitehouse bought between $1,001 - $15,000 of BIIB shares on 10 July.

James M Inhofe bought between $15,001 - $50,000 of BIIB shares on 9 July.

Sheldon Whitehouse bought between $15,001 - $50,000 of BIIB shares on 7 May.

Sheldon Whitehouse bought between $1,001 - $15,000 of BIIB shares on 7 April.

Susan M. Collins sold between $1,001 - $15,000 of BIIB shares on 23 July.

Susan M Collins sold between $1,001 - $15,000 of BIIB shares on 27 March.