FWP

Filed pursuant to Rule 433

Registration No.: 333-206799

September 10, 2015

Biogen Inc.

$1,500,000,000 2.900% Senior Notes Due 2020

$1,000,000,000 3.625% Senior Notes Due 2022

$1,750,000,000 4.050% Senior Notes Due 2025

$1,750,000,000 5.200% Senior Notes Due 2045

PRICING TERM SHEET

2.900% Senior Notes Due 2020

 

Issuer    Biogen Inc.
Principal Amount    $1,500,000,000
Maturity Date    September 15, 2020
Issue Price (Price to Public)    99.792%
Interest Rate    2.900% per annum beginning on the Issue Date
Interest Payment Dates    Semi-annually, each March 15 and September 15, commencing March 15, 2016
Treasury Benchmark    1.375% due August 31, 2020
Spread to Benchmark Treasury    140 bps
Benchmark Treasury Yield    1.545%
Yield to Maturity    2.945%
Optional Redemption    Make whole call as set forth in the preliminary prospectus supplement (treasury rate plus 20 basis points)
CUSIP/ISIN:    09062X AC7 / US09062XAC74

3.625% Senior Notes Due 2022

 

Issuer    Biogen Inc.
Principal Amount    $1,000,000,000
Maturity Date    September 15, 2022
Issue Price (Price to Public)    99.920%
Interest Rate    3.625% per annum beginning on the Issue Date
Interest Payment Dates    Semi-annually, each March 15 and September 15, commencing March 15, 2016
Treasury Benchmark    1.875% due August 31, 2022
Spread to Benchmark Treasury    170 bps


Benchmark Treasury Yield    1.938%
Yield to Maturity    3.638%
Optional Redemption    Make whole call as set forth in the preliminary prospectus supplement (treasury rate plus 25 basis points)
CUSIP/ISIN:    09062X AE3 / US09062XAE31

4.050% Senior Notes Due 2025

 

Issuer    Biogen Inc.
Principal Amount    $1,750,000,000
Maturity Date    September 15, 2025
Issue Price (Price to Public)    99.764%
Interest Rate    4.050% per annum beginning on the Issue Date
Interest Payment Dates    Semi-annually, each March 15 and September 15, commencing March 15, 2016
Treasury Benchmark    2.000% due August 15, 2025
Spread to Benchmark Treasury    185 bps
Benchmark Treasury Yield    2.229%
Yield to Maturity    4.079%
Optional Redemption   

Make whole call, in whole or in part, as set forth in the preliminary prospectus supplement (treasury rate plus 30 basis points) at any time prior to June 15, 2025 (three months prior to the maturity date of the notes due 2025)

 

Par call, in whole or in part, at any time on or after June 15, 2025 (three months prior to the maturity date of the notes due 2025)

CUSIP/ISIN:    09062X AF0 / US09062XAF06

5.200% Senior Notes Due 2045

 

Issuer    Biogen Inc.
Principal Amount    $1,750,000,000
Maturity Date    September 15, 2045
Issue Price (Price to Public)    99.294%
Interest Rate    5.200% per annum beginning on the Issue Date
Interest Payment Dates    Semi-annually, each March 15 and September 15, commencing March 15, 2016


Treasury Benchmark    3.000% due May 15, 2045
Spread to Benchmark Treasury    225 bps
Benchmark Treasury Yield    2.997%
Yield to Maturity    5.247%
Optional Redemption   

Make whole call, in whole or in part, as set forth in the preliminary prospectus supplement (treasury rate plus 35 basis points) at any time prior to March 15, 2045 (six months prior to the maturity date of the notes due 2045)

 

Par call, in whole or in part, at any time on or after March 15, 2045 (six months prior to the maturity date of the notes due 2045)

CUSIP/ISIN:    09062X AD5 / US09062XAD57

Terms Applicable to All Tranches

 

Ratings    Baa1 / A- (Moody’s/S&P)
Trade Date    September 10, 2015
Original Issue Date (Settlement)    September 15, 2015
Change of Control    Upon the occurrence of a Change of Control Triggering Event (as defined in the preliminary prospectus supplement to which this pricing term sheet relates), Biogen Inc. will be required to make an offer to purchase the notes at a price equal to 101% of their principal amount plus accrued and unpaid interest to but not including the date of repurchase
Minimum Denomination    $2,000 and integral multiples of $1,000 in excess thereof
Joint Book-Running Managers   

Goldman, Sachs & Co.

Merrill Lynch, Pierce, Fenner & Smith

                     Incorporated

Passive Bookrunners   

Credit Suisse Securities (USA) LLC (Notes due 2045)

Deutsche Bank Securities Inc. (Notes due 2025)

J.P. Morgan Securities LLC (Notes due 2020)

Mitsubishi UFJ Securities (USA), Inc. (Notes due 2022)

Morgan Stanley & Co. LLC (Notes due 2020, 2022, 2025, 2045)

Senior Co-Managers   

Credit Suisse Securities (USA) LLC

Deutsche Bank Securities Inc.

J.P. Morgan Securities LLC

Mitsubishi UFJ Securities (USA), Inc.

Co-Managers   

HSBC Securities (USA) Inc.

Mizuho Securities USA Inc.

U.S. Bancorp Investments, Inc.

None of the securities ratings is a recommendation to buy, sell or hold the notes. Each rating may be subject to revision or withdrawal at any time, and should be evaluated independently of any other rating.


The issuer has filed a registration statement (including a prospectus) and a preliminary prospectus supplement with the Securities and Exchange Commission (“SEC”) for the offerings to which this communication relates. Before you invest, you should read the prospectus in that registration statement, the preliminary prospectus supplement and other documents the issuer has filed with the SEC for more complete information about the issuer and these offerings. You may get these documents for free by visiting EDGAR on the SEC Web site at www.sec.gov. Alternatively, the issuer, any underwriter or any dealer participating in the offerings will arrange to send you the prospectus if you request it by calling Goldman, Sachs & Co. toll free at 1 (866) 471-2526 or Merrill Lynch, Pierce, Fenner & Smith Incorporated toll free at 1 (800) 294-1322.

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