DEFA14A


BIOGEN INC.

		BIOGEN INC. 225 BINNEY STREET CAMBRIDGE, MA 02142

Meeting Information

Meeting Type: Annual Meeting

For holders as of: April 11, 2016

Date: June 8, 2016 Time: 9:00 AM Eastern Daylight Time

Location: Meeting live via the Internet-please visit

www.virtualshareholdermeeting.com/BIIB.

The company will be hosting the meeting live via the Internet this year. To attend the meeting via the Internet please visit www.virtualshareholdermeeting.com/BIIB and be sure to have the information that is printed in the box marked by the arrow LOGO (located on the following page).

You are receiving this communication because you hold shares in the company named above.

This is not a ballot. You cannot use this notice to vote these shares. This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. You may view the proxy materials online at www.proxyvote.com or easily request a paper copy (see reverse side).

We encourage you to access and review all of the important information contained in the proxy materials before voting.

See the reverse side of this notice to obtain proxy materials and voting instructions.

1.	Election of Directors. To elect the eleven director nominees numbered 1a through 1k to serve for a one-year term extending until the 2017 annual meeting of stockholders and their successors are duly elected and qualified.

1a.

Alexander J. Denner

1b.

Caroline D. Dorsa

1c.

Nancy L. Leaming

1d.

Richard C. Mulligan

1e.

Robert W. Pangia

1f.

Stelios Papadopoulos

1g.

Brian S. Posner

1h.

Eric K. Rowinsky

1i.

George A. Scangos

1j.

Lynn Schenk

1k.

Stephen A. Sherwin

To ratify the selection of PricewaterhouseCoopers LLP as Biogen Inc.’s independent registered public accounting firm for the fiscal year ending December 31, 2016.

Say on Pay - To approve an advisory vote on executive compensation.

To transact such other business as may be properly brought before the meeting and any adjournments or postponements thereof.


¨		Preliminary Proxy Statement

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¨		Definitive Proxy Statement

x		Definitive Additional Materials

¨		Soliciting Material under § 240.14a-12



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		Proxy Materials Available to VIEW or RECEIVE:
		2016 NOTICE AND PROXY STATEMENT 2015 ANNUAL REPORT WITH FORM 10-K
		How to View Online:
		Have the information that is printed in the box marked by the arrow (located on the following page) and visit: www.proxyvote.com.
		How to Request and Receive a PAPER or E-MAIL Copy:
		If you want to receive a paper or e-mail copy of these documents, you must request one. There is NO charge for requesting a copy. Please choose one of the following methods to make your request:
		1) BY INTERNET:		www.proxyvote.com
		2) BY TELEPHONE:		1-800-579-1639
		3) BY E-MAIL*:		sendmaterial@proxyvote.com
		* If requesting materials by e-mail, please send a blank e-mail with the information that is printed in the box marked by the arrow (located on the following page) in the subject line. Requests, instructions and other inquiries sent to this e-mail address will NOT be forwarded to your investment advisor. Please make the request as instructed above on or before May 25, 2016 to facilitate timely delivery.
		— How To Vote — Please Choose One of the Following Voting Methods
		Vote By Internet:
		Before The Meeting:
		Go to www.proxyvote.com. Have the information that is printed in the box marked by the arrow (located on the following page) available and follow the instructions.
		During The Meeting: Go to www.virtualshareholdermeeting.com/BIIB. Have the information that is printed in the box marked by the arrow (located on the following page) available and follow the instructions.
		Vote By Mail: You can vote by mail by requesting a paper copy of the materials, which will include a proxy card.


Voting Items