ALKERMES PLC

Ticker: ALKS CUSIP: G01767105 Class: Common Stock

TRILLIUM ASSET MANAGEMENT, LLC's Holding History (CIK: 0000884541)

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

Q4 2018

Shares 12,796 Value ($000) $378 Avg Close $36.92 Range $27.54 - $45.16

Q3 2018

Shares 12,904 Value ($000) $548 Avg Close $43.40 Range $38.23 - $46.98

Q2 2018

Shares 12,712 Value ($000) $523 Avg Close $45.54 Range $39.54 - $51.70

Q1 2018

Shares 12,479 Value ($000) $723 Avg Close $58.50 Range $51.68 - $71.22

Q4 2017

Shares 17,938 Value ($000) $982 Avg Close $51.03 Range $46.43 - $56.58

Q3 2017

Shares 48,519 Value ($000) $2,467 Avg Close $53.48 Range $48.90 - $61.31

Q2 2017

Shares 47,808 Value ($000) $2,771 Avg Close $58.09 Range $53.64 - $63.40

Q1 2017

Shares 45,871 Value ($000) $2,683 Avg Close $56.71 Range $51.08 - $62.50

Q4 2016

Shares 44,489 Value ($000) $2,473 Avg Close $53.46 Range $41.93 - $60.74

Q3 2016

Shares 45,729 Value ($000) $2,151 Avg Close $47.55 Range $43.26 - $52.27

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2018	12,796	$378	$36.92	$27.54 - $45.16
Q3 2018	12,904	$548	$43.40	$38.23 - $46.98
Q2 2018	12,712	$523	$45.54	$39.54 - $51.70
Q1 2018	12,479	$723	$58.50	$51.68 - $71.22
Q4 2017	17,938	$982	$51.03	$46.43 - $56.58
Q3 2017	48,519	$2,467	$53.48	$48.90 - $61.31
Q2 2017	47,808	$2,771	$58.09	$53.64 - $63.40
Q1 2017	45,871	$2,683	$56.71	$51.08 - $62.50
Q4 2016	44,489	$2,473	$53.46	$41.93 - $60.74
Q3 2016	45,729	$2,151	$47.55	$43.26 - $52.27