SEC Form 4 · accession 0001127602-16-043343

BIOGEN INC. · BIIB

Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗

Reporting owner

Officer — Chief Executive Officer · Director

Period of report

Feb 23, 2016

Accepted (ET)

Feb 25, 2016 · 4:51 pm EST

Rule 10b5-1 plan

unknown — predates the checkbox

Issuer CIK

0000875045

Table I — non-derivative securities

Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Common Stock	Feb 23, 2016	M	2,964	$0.00	A	62,812	D
Common Stock	Feb 23, 2016	F	1,395	$258.99	D	61,417	D
Common Stock	holding	—	—		—	5,378	I	by Trust
Common Stock	holding	—	—		—	5,378	I	by Trust

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Restricted Stock Unit^F1	$0.00	Feb 23, 2016	M	2,964	D	—	Feb 23, 2018	Common Stock	2,964	23,586	D
Restricted Stock Unit^F1	$0.00	Feb 23, 2016	J	5,884	D	—	Feb 23, 2018	Common Stock	5,884	17,702	D

F1The number of RSUs reported represents the maximum possible number of shares that are eligible for vesting, which is 200% of the number of shares at target payout. One-third of these RSUs are eligible to vest on each of the first three anniversaries of the grant date. The actual number of shares that will vest on each vesting date will be determined by comparing the price of Biogen Idec common stock on such vesting date to the price on the grant date (i.e., number of vested shares = number of shares at target payout times [the 30-day average closing stock price ending on the vesting date divided by the 30-day average closing stock price on the grant date]).
F2This represents the difference between the maximum possible number of shares that were eligible for vesting and the actual number that vested.