BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

SENTINEL TRUST CO LBA's Holding History (CIK: 0001114739)

Note: Option positions (PUT/CALL) are excluded.

Q4 2018

Shares 6,830 Value ($000) $2,056 Avg Close $319.14 Range $278.46 - $358.41

Q3 2018

Shares 6,270 Value ($000) $2,215 Avg Close $344.30 Range $288.13 - $388.67

Q2 2018

Shares 13,190 Value ($000) $3,829 Avg Close $281.15 Range $249.17 - $310.91

Q1 2018

Shares 16,410 Value ($000) $4,494 Avg Close $310.41 Range $259.76 - $370.57

Q4 2017

Shares 15,880 Value ($000) $5,059 Avg Close $320.80 Range $301.81 - $348.84

Q3 2017

Shares 5,985 Value ($000) $1,874 Avg Close $296.11 Range $269.50 - $330.00

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2018	6,830	$2,056	$319.14	$278.46 - $358.41
Q3 2018	6,270	$2,215	$344.30	$288.13 - $388.67
Q2 2018	13,190	$3,829	$281.15	$249.17 - $310.91
Q1 2018	16,410	$4,494	$310.41	$259.76 - $370.57
Q4 2017	15,880	$5,059	$320.80	$301.81 - $348.84
Q3 2017	5,985	$1,874	$296.11	$269.50 - $330.00