Ehlers Michael D 4

4 · BIOGEN INC. · Filed Jun 4, 2019

Form 4

Period: 2019-06-01

EVP, Research and Development

Transactions

Exercise/Conversion
Restricted Stock Unit
2019-06-01−1,126→ 1,376 total
Exercise: $0.00Exp: 2019-06-01→ Common Stock (1,126 underlying)
Other
Restricted Stock Unit
2019-06-01−1,376→ 0 total
Exercise: $0.00Exp: 2019-06-01→ Common Stock (1,376 underlying)
Tax Payment
Common Stock
2019-06-01$219.29/sh−500$109,645→ 8,025.222 total
Exercise/Conversion
Common Stock
2019-06-01+1,126→ 8,525.222 total
Tax Payment
Common Stock
2019-06-01$219.29/sh−460$100,873→ 7,399.222 total

Footnotes (3)

[F1]Includes 82.051 shares acquired under the Biogen Inc. employee stock purchase plan on 3/29/2019.
[F2]The 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 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]).
[F3]This represents the difference between the maximum possible number of shares that were eligible for vesting and the actual number that vested.

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