BIOGEN INC. — Director's Dealing 2017

Feb 1, 2017

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Bioverativ Inc. (BIVV)
CIK: 0001681689
Period of Report: 2017-02-01

Reporting Person: BIOGEN INC. (10% Owner)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2017-02-01	Common Stock	J	107975968	—	Disposed	0	Direct

Footnotes

F1: Biogen Inc. distributed the shares to its shareholders on a pro rata basis in connection with the separation of the Issuer from Biogen Inc. on February 1, 2017.

F2: On January 31, 2017, the 1,000 shares of common stock of the Issuer, issued and outstanding as of such date, were reclassified and subdivided into 107,975,968 shares resulting in the reporting person's ownership of a total of 107,975,968 shares of common stock.