BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

FIRST AMERICAN TRUST, FSB's Holding History (CIK: 0000036066)

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

Q1 2019

Shares 11,567 Value ($000) $2,734 Avg Close $314.89 Range $216.12 - $344.00

Q4 2018

Shares 11,331 Value ($000) $3,410 Avg Close $319.14 Range $278.46 - $358.41

Q3 2018

Shares 11,542 Value ($000) $4,077 Avg Close $344.30 Range $288.13 - $388.67

Q2 2018

Shares 11,479 Value ($000) $3,332 Avg Close $281.15 Range $249.17 - $310.91

Q1 2018

Shares 10,610 Value ($000) $2,905 Avg Close $310.41 Range $259.76 - $370.57

Q4 2017

Shares 10,129 Value ($000) $3,227 Avg Close $320.80 Range $301.81 - $348.84

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2019	11,567	$2,734	$314.89	$216.12 - $344.00
Q4 2018	11,331	$3,410	$319.14	$278.46 - $358.41
Q3 2018	11,542	$4,077	$344.30	$288.13 - $388.67
Q2 2018	11,479	$3,332	$281.15	$249.17 - $310.91
Q1 2018	10,610	$2,905	$310.41	$259.76 - $370.57
Q4 2017	10,129	$3,227	$320.80	$301.81 - $348.84